/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1A3C34;
            --primary-dark: #0F2A24;
            --primary-light: #EDF3F0;
            --accent: #C8A96A;
            --accent-hover: #B89555;
            --bg-body: #F7F5F1;
            --bg-white: #FFFFFF;
            --bg-dark-section: #152B26;
            --text-main: #1F1F1F;
            --text-body: #4A4A4A;
            --text-muted: #8C8C8C;
            --border-color: #E8E2D8;
            --border-dark: #C9C0B0;
            --gold-gradient: linear-gradient(135deg, #C8A96A, #E0C68D 50%, #C8A96A);
            --shadow-card: 0 2px 16px rgba(26, 60, 52, 0.06);
            --shadow-hover: 0 8px 30px rgba(26, 60, 52, 0.12);
            --shadow-btn: 0 4px 14px rgba(200, 169, 106, 0.3);
            --font-main: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        /* ===== 基础 Reset / Base ===== */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            color: var(--text-main);
            background-color: var(--bg-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: all .3s ease;
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
        }

        /* ===== 通用按钮 ===== */
        .btn-gold {
            background: var(--gold-gradient);
            color: var(--primary-dark) !important;
            border: none;
            border-radius: 4px;
            font-weight: 600;
            padding: .75rem 1.75rem;
            transition: all .3s ease;
            box-shadow: var(--shadow-btn);
            display: inline-flex;
            align-items: center;
            gap: .5rem;
        }
        .btn-gold:hover {
            background: var(--accent-hover);
            color: #fff !important;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(200, 169, 106, 0.4);
        }
        .btn-gold:active {
            transform: translateY(0);
            filter: brightness(.94);
        }
        .btn-outline-primary {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary) !important;
            border-radius: 4px;
            font-weight: 600;
            padding: .75rem 1.75rem;
            transition: all .3s ease;
            display: inline-flex;
            align-items: center;
            gap: .5rem;
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff !important;
            transform: translateY(-2px);
        }
        .btn-outline-light-gold {
            background: transparent;
            border: 1.5px solid var(--accent);
            color: var(--accent) !important;
            border-radius: 4px;
            font-weight: 600;
            padding: .75rem 1.75rem;
            transition: all .3s ease;
        }
        .btn-outline-light-gold:hover {
            background: var(--accent);
            color: var(--primary-dark) !important;
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: .9rem 2rem;
        }

        /* ===== 顶部信息条 ===== */
        .topbar {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .88);
            font-size: .85rem;
            min-height: 38px;
            display: flex;
            align-items: center;
        }
        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .topbar-brand {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            color: rgba(255, 255, 255, .9);
            font-weight: 500;
            letter-spacing: .02em;
        }
        .topbar-brand i {
            color: var(--accent);
        }
        .topbar-links {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }
        .topbar-links a {
            color: rgba(255, 255, 255, .85);
            font-size: .85rem;
            transition: color .3s;
        }
        .topbar-links a:hover {
            color: var(--accent);
        }
        .topbar-contact {
            border: 1px solid rgba(200, 169, 106, .7);
            border-radius: 20px;
            padding: 2px 14px;
            font-weight: 500;
        }
        .topbar-contact:hover {
            background: var(--accent);
            color: var(--primary-dark) !important;
        }

        /* ===== 主导航 ===== */
        .custom-navbar {
            background: rgba(247, 245, 241, 0.96);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            padding: 0;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            min-height: 72px;
        }
        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: .6rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--primary);
            letter-spacing: .01em;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            font-size: .95rem;
            font-weight: 800;
            letter-spacing: 0;
            box-shadow: 0 3px 10px rgba(26, 60, 52, 0.25);
        }
        .brand-text {
            color: var(--primary);
        }
        .custom-navbar .navbar-nav {
            gap: .25rem;
        }
        .custom-navbar .nav-link {
            color: var(--text-body);
            font-weight: 500;
            font-size: .98rem;
            padding: 1.6rem 1rem !important;
            position: relative;
            white-space: nowrap;
            transition: color .3s;
        }
        .custom-navbar .nav-link::after {
            content: "";
            position: absolute;
            left: 1rem;
            right: 1rem;
            bottom: 0;
            height: 3px;
            background: var(--accent);
            width: 0;
            transition: width .3s ease;
            border-radius: 3px 3px 0 0;
        }
        .custom-navbar .nav-link:hover::after,
        .custom-navbar .nav-link.active::after {
            width: calc(100% - 2rem);
        }
        .custom-navbar .nav-link:hover,
        .custom-navbar .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .navbar-toggler {
            border: 1.5px solid var(--primary);
            border-radius: 4px;
            padding: .25rem .5rem;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(200, 169, 106, 0.3);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231A3C34' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .btn-nav-cta {
            margin-left: 1rem;
            padding: .55rem 1.4rem;
            font-size: .9rem;
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            background: linear-gradient(180deg, #FDFCF9 0%, var(--bg-body) 100%);
            padding: clamp(3.5rem, 6vw, 5.5rem) 0 clamp(3rem, 5vw, 4.5rem);
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -200px;
            width: 520px;
            height: 520px;
            background: rgba(200, 169, 106, 0.06);
            border-radius: 50%;
        }
        .hero-section::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gold-gradient);
            opacity: .5;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            animation: heroFade .6s ease both;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            border: 1px solid rgba(200, 169, 106, .6);
            border-radius: 20px;
            padding: .3rem .85rem;
            font-size: .8rem;
            font-weight: 500;
            color: var(--primary);
            background: rgba(255, 255, 255, .7);
            margin-bottom: 1.5rem;
        }
        .hero-tag .dot {
            width: 7px;
            height: 7px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
        }
        .hero-title {
            font-size: clamp(1.85rem, 3.6vw, 3.2rem);
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-main);
            margin-bottom: 1.2rem;
            letter-spacing: -0.02em;
        }
        .hero-title em {
            font-style: normal;
            color: var(--primary);
            position: relative;
        }
        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 2rem;
            max-width: 520px;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.2rem;
        }
        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            align-items: center;
            font-size: .9rem;
            color: var(--text-body);
        }
        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
        }
        .hero-trust i {
            color: var(--accent);
        }

        .hero-visual {
            position: relative;
            z-index: 2;
            animation: heroFade .6s ease .15s both;
        }
        .hero-visual-frame {
            position: relative;
            border-radius: 12px;
            min-height: 420px;
            background-size: cover;
            background-position: center;
            border: 1px solid rgba(26, 60, 52, 0.25);
            box-shadow: 0 18px 50px rgba(26, 60, 52, 0.15);
            overflow: hidden;
        }
        .hero-visual-frame::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 42, 36, 0.1) 0%, rgba(15, 42, 36, 0.28) 100%);
        }
        .hero-float-card {
            position: absolute;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(6px);
            border-radius: 8px;
            padding: .6rem 1rem;
            font-size: .8rem;
            font-weight: 600;
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(26, 60, 52, 0.14);
            border-left: 3px solid var(--accent);
            z-index: 3;
            white-space: nowrap;
        }
        .hero-float-card.card-1 {
            bottom: 1.5rem;
            left: -1rem;
        }
        .hero-float-card.card-2 {
            top: 1.8rem;
            right: -0.5rem;
        }
        .hero-float-card i {
            color: var(--accent);
            margin-right: .35rem;
        }

        @keyframes heroFade {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 数据条 ===== */
        .stats-section {
            background: var(--primary);
            padding: 2.8rem 0;
            position: relative;
        }
        .stats-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--gold-gradient);
        }
        .stats-section .stat-item {
            text-align: center;
            padding: 1rem;
        }
        .stat-number {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 700;
            color: var(--accent);
            font-family: "Barlow", "DIN Alternate", "Roboto", sans-serif;
            line-height: 1.2;
        }
        .stat-label {
            color: rgba(255, 255, 255, .85);
            font-size: .9rem;
            margin-top: .35rem;
            letter-spacing: .05em;
        }

        /* ===== 通用板块样式 ===== */
        .section-block {
            padding: clamp(3.5rem, 7vw, 6.5rem) 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            font-size: .82rem;
            font-weight: 700;
            letter-spacing: .12em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: .8rem;
        }
        .section-label::before {
            content: "";
            width: 22px;
            height: 2px;
            background: var(--accent);
            display: inline-block;
            border-radius: 2px;
        }
        .section-header h2 {
            font-size: clamp(1.4rem, 2.4vw, 2.2rem);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.25;
            margin-bottom: .75rem;
            letter-spacing: -0.01em;
        }
        .section-header p {
            color: var(--text-body);
            font-size: .95rem;
            max-width: 560px;
        }
        .section-header.light h2 {
            color: #fff;
        }
        .section-header.light p {
            color: rgba(255, 255, 255, .75);
        }

        /* ===== 功能分组 ===== */
        .features-section {
            background: var(--bg-body);
        }
        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 1.75rem;
            height: 100%;
            position: relative;
            transition: all .3s ease;
            overflow: hidden;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gold-gradient);
            width: 0;
            transition: width .4s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .feature-card:hover::before {
            width: 100%;
        }
        .feature-card-large {
            background: var(--primary);
            color: #fff;
            border: none;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .feature-card-large:hover {
            box-shadow: 0 12px 36px rgba(26, 60, 52, 0.28);
            border-color: transparent;
        }
        .feature-card-large .feature-icon {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(200, 169, 106, .5);
        }
        .feature-card-large h3 {
            color: #fff !important;
        }
        .feature-card-large p {
            color: rgba(255, 255, 255, .78) !important;
        }
        .feature-card-large .feature-link {
            color: var(--accent);
            font-weight: 600;
        }
        .feature-card-large .feature-link:hover {
            color: #fff;
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 10px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 1.25rem;
            transition: all .3s ease;
        }
        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: .6rem;
        }
        .feature-card p {
            font-size: .9rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .feature-card-large p {
            -webkit-line-clamp: 3;
        }
        .feature-link {
            margin-top: 1.2rem;
            display: inline-block;
            font-size: .88rem;
            font-weight: 600;
            color: var(--primary);
        }
        .feature-link i {
            transition: transform .3s;
            display: inline-block;
        }
        .feature-link:hover i {
            transform: translateX(4px);
        }
        .feature-media {
            margin-top: 1.25rem;
            border-radius: 6px;
            overflow: hidden;
            aspect-ratio: 16/7;
            background: var(--primary-light);
        }
        .feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .feature-card:hover .feature-media img {
            transform: scale(1.03);
        }

        /* ===== 使用场景 ===== */
        .scenarios-section {
            background: var(--primary-light);
        }
        .scenario-visual {
            border-radius: 10px;
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }
        .scenario-visual img {
            width: 100%;
            height: 100%;
            min-height: 300px;
            object-fit: cover;
            display: block;
        }
        .scenario-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(26, 60, 52, 0.45));
        }
        .scenario-item {
            display: flex;
            gap: 1.25rem;
            padding: 1.5rem 0;
            border-bottom: 1px solid var(--border-color);
            transition: all .3s ease;
        }
        .scenario-item:last-child {
            border-bottom: none;
        }
        .scenario-item:hover {
            padding-left: .75rem;
        }
        .scenario-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
            font-family: "Barlow", sans-serif;
            line-height: 1.3;
            min-width: 40px;
        }
        .scenario-item h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: .35rem;
        }
        .scenario-item p {
            font-size: .9rem;
            color: var(--text-body);
            line-height: 1.65;
            margin: 0;
        }

        /* ===== 最新资讯 ===== */
        .news-section {
            background: var(--bg-body);
        }
        .view-all {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-size: .9rem;
            font-weight: 600;
            color: var(--primary);
            padding-bottom: 4px;
            border-bottom: 2px solid var(--accent);
            transition: all .3s;
        }
        .view-all:hover {
            color: var(--accent-hover);
            gap: .7rem;
        }
        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            overflow: hidden;
            transition: all .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .news-card-media {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--primary-light);
            position: relative;
        }
        .news-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .news-card:hover .news-card-media img {
            transform: scale(1.04);
        }
        .news-card-body {
            padding: 1.35rem 1.5rem 1.5rem;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }
        .badge-category {
            display: inline-block;
            padding: .22rem .75rem;
            border: 1px solid var(--accent);
            border-radius: 20px;
            font-size: .75rem;
            font-weight: 500;
            color: var(--accent-hover);
            background: rgba(200, 169, 106, 0.08);
            margin-bottom: .8rem;
            align-self: flex-start;
        }
        .news-card-title {
            font-size: 1.05rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: .5rem;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-title a {
            color: var(--text-main);
        }
        .news-card-title a:hover {
            color: var(--primary);
        }
        .news-card-summary {
            font-size: .88rem;
            color: var(--text-body);
            line-height: 1.65;
            margin-bottom: 1rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex-grow: 1;
        }
        .news-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: .8rem;
            border-top: 1px solid var(--border-color);
            font-size: .82rem;
            color: var(--text-muted);
        }
        .news-card-meta a {
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: .25rem;
        }
        .news-card-meta a:hover {
            color: var(--accent-hover);
        }
        .empty-state {
            border: 1px dashed var(--border-dark);
            border-radius: 10px;
            padding: 3rem 2rem;
            text-align: center;
            background: var(--bg-white);
        }
        .empty-state i {
            font-size: 2.4rem;
            color: var(--text-muted);
            margin-bottom: .6rem;
            display: block;
        }
        .empty-state p {
            color: var(--text-muted);
            font-size: .95rem;
            margin: 0;
        }

        /* ===== 成功案例 ===== */
        .cases-section {
            background: var(--bg-dark-section);
            position: relative;
        }
        .cases-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gold-gradient);
        }
        .case-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            padding: 2rem;
            height: 100%;
            transition: all .3s ease;
            position: relative;
        }
        .case-card:hover {
            transform: translateY(-4px);
            border-color: rgba(200, 169, 106, .5);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
        }
        .quote-mark {
            font-size: 3rem;
            font-family: Georgia, serif;
            color: var(--accent);
            line-height: 1;
            height: 1.6rem;
            margin-bottom: .75rem;
        }
        .case-card p {
            color: rgba(255, 255, 255, .88);
            font-size: .95rem;
            line-height: 1.75;
            margin-bottom: 1.5rem;
        }
        .case-user {
            display: flex;
            align-items: center;
            gap: .8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1rem;
        }
        .case-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            border: 1.5px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: .85rem;
            font-weight: 700;
        }
        .case-name {
            color: #fff;
            font-weight: 600;
            font-size: .9rem;
            display: block;
        }
        .case-tag {
            color: var(--accent);
            font-size: .78rem;
            display: block;
        }
        .cases-section .btn-wrap {
            margin-top: 3rem;
            text-align: center;
        }

        /* ===== 价格 / 套餐 ===== */
        .pricing-section {
            background: var(--bg-body);
        }
        .pricing-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 2.5rem 2rem;
            height: 100%;
            text-align: center;
            position: relative;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
        }
        .pricing-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .pricing-card.recommended {
            border: 2px solid var(--accent);
            box-shadow: 0 8px 30px rgba(200, 169, 106, 0.18);
            background: var(--primary-light);
        }
        .pricing-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: var(--primary-dark);
            font-size: .75rem;
            font-weight: 700;
            padding: .25rem 1rem;
            border-radius: 20px;
            white-space: nowrap;
            letter-spacing: .05em;
        }
        .pricing-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: .6rem;
        }
        .pricing-price {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--accent);
            font-family: "Barlow", "DIN Alternate", sans-serif;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .pricing-price small {
            font-size: .9rem;
            color: var(--text-muted);
            font-weight: 400;
            margin-left: .2rem;
        }
        .pricing-features {
            list-style: none;
            padding: 0;
            margin: 0 0 1.5rem;
            text-align: left;
            flex-grow: 1;
        }
        .pricing-features li {
            padding: .45rem 0;
            font-size: .9rem;
            color: var(--text-body);
            display: flex;
            align-items: flex-start;
            gap: .55rem;
            border-bottom: 1px dashed var(--border-color);
        }
        .pricing-features li:last-child {
            border-bottom: none;
        }
        .pricing-features li i {
            color: var(--accent);
            margin-top: .25rem;
            font-size: .8rem;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }
        .faq-intro {
            position: sticky;
            top: 100px;
        }
        .faq-intro h2 {
            font-size: clamp(1.4rem, 2.4vw, 2.1rem);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1rem;
        }
        .faq-intro p {
            color: var(--text-body);
            font-size: .95rem;
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }
        .faq-accordion .accordion-item {
            border: none;
            background: transparent;
            border-bottom: 1px solid var(--border-color);
            border-radius: 0 !important;
        }
        .faq-accordion .accordion-button {
            background: transparent;
            box-shadow: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            padding: 1.25rem 0;
            padding-right: 2.5rem;
            position: relative;
            border: none;
        }
        .faq-accordion .accordion-button::after {
            content: "\F4FE";
            font-family: "bootstrap-icons";
            background: none;
            width: auto;
            height: auto;
            font-size: 1.2rem;
            color: var(--accent);
            position: absolute;
            right: 0;
            transition: transform .3s;
            display: flex;
            align-items: center;
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            font-weight: 700;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border: none;
        }
        .faq-accordion .accordion-body {
            padding: 0 0 1.5rem;
            color: var(--text-body);
            font-size: .92rem;
            line-height: 1.7;
        }

        /* ===== CTA 横幅 ===== */
        .cta-section {
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: clamp(4rem, 7vw, 6rem) 0;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 42, 36, 0.82), rgba(21, 43, 38, 0.9));
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: clamp(1.6rem, 3vw, 2.6rem);
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, .78);
            font-size: 1rem;
            margin-bottom: 2rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .75);
            padding-top: 4rem;
        }
        .footer::before {
            content: "";
            display: block;
            height: 3px;
            background: var(--gold-gradient);
        }
        .footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
            position: relative;
            padding-bottom: .6rem;
            display: inline-block;
        }
        .footer h5::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: .6rem;
            margin-bottom: 1rem;
        }
        .footer-desc {
            font-size: .88rem;
            color: rgba(255, 255, 255, .6);
            margin-bottom: 1.5rem;
            max-width: 300px;
            line-height: 1.7;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: .55rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .65);
            font-size: .88rem;
            transition: all .3s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            display: flex;
            gap: .6rem;
            font-size: .88rem;
            color: rgba(255, 255, 255, .6);
            margin-bottom: .6rem;
        }
        .footer-contact i {
            color: var(--accent);
            margin-top: .3rem;
        }
        .footer-social {
            display: flex;
            gap: .6rem;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, .7);
            font-size: .9rem;
            transition: all .3s ease;
        }
        .footer-social a:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.5rem 0;
            margin-top: 3rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: .5rem;
            font-size: .82rem;
            color: rgba(255, 255, 255, .5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .6);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 回到顶部 ===== */
        .back-to-top {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 1.5px solid var(--accent);
            color: var(--primary);
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-card);
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease;
            z-index: 999;
            cursor: pointer;
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        /* ===== 可访问性 ===== */
        a:focus-visible,
        button:focus-visible,
        .btn:focus-visible {
            outline: 3px solid rgba(200, 169, 106, .5);
            outline-offset: 2px;
            box-shadow: 0 0 0 6px rgba(200, 169, 106, 0.15);
            border-radius: 4px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .custom-navbar .navbar-nav {
                padding: 1rem 0;
            }
            .custom-navbar .nav-link {
                padding: .75rem 0 !important;
                border-bottom: 1px solid var(--border-color);
            }
            .custom-navbar .nav-link::after {
                display: none;
            }
            .btn-nav-cta {
                margin: 1rem 0 1.2rem;
                width: 100%;
                justify-content: center;
            }
            .hero-visual-frame {
                min-height: 340px;
                margin-top: 2.5rem;
            }
            .hero-float-card.card-1 {
                left: 1rem;
            }
            .hero-float-card.card-2 {
                right: 1rem;
            }
            .faq-intro {
                position: static;
                margin-bottom: 2rem;
            }
        }

        @media (max-width: 767.98px) {
            .topbar-links {
                gap: .75rem;
            }
            .topbar-links a:not(.topbar-contact) {
                display: none;
            }
            .hero-section {
                padding-top: 2.5rem;
            }
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-subtitle {
                font-size: .95rem;
            }
            .hero-visual-frame {
                min-height: 260px;
            }
            .hero-float-card {
                font-size: .72rem;
                padding: .45rem .75rem;
            }
            .stats-section {
                padding: 1.8rem 0;
            }
            .stat-item {
                padding: .75rem .5rem;
            }
            .feature-card {
                padding: 1.4rem;
            }
            .pricing-card {
                padding: 2rem 1.5rem;
                margin-bottom: 1.5rem;
            }
            .case-card {
                padding: 1.5rem;
                margin-bottom: 1rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .back-to-top {
                width: 40px;
                height: 40px;
                bottom: 16px;
                right: 16px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1A3C34;
            --primary-dark: #0F2A24;
            --primary-light: #EDF3F0;
            --accent: #C8A96A;
            --accent-hover: #B89555;
            --bg-body: #F7F5F1;
            --bg-white: #FFFFFF;
            --bg-dark-section: #152B26;
            --text-main: #1F1F1F;
            --text-body: #4A4A4A;
            --text-muted: #8C8C8C;
            --border-color: #E8E2D8;
            --border-dark: #C9C0B0;
            --gold-gradient: linear-gradient(135deg, #C8A96A, #E0C68D 50%, #C8A96A);
            --shadow-card: 0 2px 16px rgba(26, 60, 52, 0.06);
            --shadow-hover: 0 8px 30px rgba(26, 60, 52, 0.12);
            --shadow-btn: 0 4px 14px rgba(200, 169, 106, 0.3);
            --radius-card: 10px;
            --radius-btn: 4px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-body);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 1rem;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: var(--primary);
            transition: color .3s ease;
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
        }

        /* ===== TopBar ===== */
        .top-bar {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .85);
            font-size: .82rem;
            padding: 6px 0;
        }
        .top-bar .top-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .top-bar .top-left i {
            color: var(--accent);
            margin-right: 4px;
        }
        .top-bar .top-right {
            display: flex;
            align-items: center;
            gap: 16px;
            justify-content: flex-end;
        }
        .top-bar .top-right a {
            color: rgba(255, 255, 255, .85);
            font-size: .82rem;
            transition: color .3s;
        }
        .top-bar .top-right a:hover {
            color: var(--accent);
        }
        .top-bar .btn-top-entry {
            border: 1px solid var(--accent);
            color: var(--accent);
            border-radius: 20px;
            padding: 2px 14px;
            font-size: .78rem;
            background: transparent;
            transition: all .3s;
        }
        .top-bar .btn-top-entry:hover {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }

        /* ===== Navbar ===== */
        .custom-navbar {
            background: rgba(247, 245, 241, .96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 12px rgba(0, 0, 0, .04);
            padding: 12px 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--primary);
            color: var(--accent);
            font-weight: 700;
            font-size: .95rem;
            border-radius: 6px;
            letter-spacing: .02em;
            transition: transform .3s;
        }
        .navbar-brand:hover .brand-icon {
            transform: rotate(-8deg) scale(1.04);
        }
        .brand-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -.01em;
        }
        .custom-navbar .navbar-nav {
            gap: 6px;
        }
        .custom-navbar .nav-link {
            font-size: .95rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 16px !important;
            position: relative;
            border-radius: 4px;
            transition: color .3s;
        }
        .custom-navbar .nav-link::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s ease;
        }
        .custom-navbar .nav-link:hover,
        .custom-navbar .nav-link.active {
            color: var(--primary);
        }
        .custom-navbar .nav-link:hover::after,
        .custom-navbar .nav-link.active::after {
            transform: scaleX(1);
        }
        .btn-gold {
            background: var(--gold-gradient);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: .92rem;
            padding: 10px 24px;
            box-shadow: var(--shadow-btn);
            transition: all .3s ease;
        }
        .btn-gold:hover {
            background: var(--accent-hover);
            color: #fff;
            box-shadow: 0 6px 20px rgba(184, 149, 85, .4);
            transform: translateY(-1px);
        }
        .btn-outline-primary-custom {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: .92rem;
            padding: 10px 24px;
            transition: all .3s ease;
        }
        .btn-outline-primary-custom:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .navbar-toggler {
            border-color: var(--border-dark);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(200, 169, 106, .2);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231A3C34' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== Page Hero ===== */
        .category-hero {
            background: linear-gradient(180deg, #F7F5F1 0%, #EDF3F0 100%);
            border-bottom: 2px solid var(--accent);
            padding: clamp(3rem, 6vw, 5rem) 0;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -10%;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(200, 169, 106, .08) 0%, transparent 70%);
        }
        .category-hero .breadcrumb-wrap {
            font-size: .85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .category-hero .breadcrumb-wrap a {
            color: var(--primary);
            font-weight: 500;
        }
        .category-hero .breadcrumb-wrap a:hover {
            color: var(--accent-hover);
        }
        .category-hero .breadcrumb-wrap .sep {
            color: var(--border-dark);
        }
        .category-hero h1 {
            font-size: clamp(1.85rem, 3.6vw, 3rem);
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-main);
            letter-spacing: -.02em;
            margin-bottom: 14px;
        }
        .category-hero h1 span {
            color: var(--accent-hover);
        }
        .category-hero .hero-sub {
            font-size: 1.05rem;
            color: var(--text-body);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--accent);
            color: var(--primary);
            border-radius: 20px;
            font-size: .8rem;
            padding: 4px 16px;
            margin-bottom: 18px;
            background: rgba(255, 255, 255, .7);
        }
        .category-hero .hero-badge i {
            color: var(--accent);
            font-size: .7rem;
        }

        /* ===== Section base ===== */
        .section {
            padding: clamp(3.5rem, 7vw, 6rem) 0;
        }
        .section-sm {
            padding: clamp(2.5rem, 4vw, 3.5rem) 0;
        }
        .section-alt {
            background: var(--primary-light);
        }
        .section-dark {
            background: var(--bg-dark-section);
            color: rgba(255, 255, 255, .85);
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 2.5rem;
            flex-wrap: wrap;
        }
        .section-head .tag-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .82rem;
            font-weight: 600;
            color: var(--accent-hover);
            letter-spacing: .08em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-head .tag-label::before {
            content: "";
            width: 24px;
            height: 2px;
            background: var(--accent);
            display: inline-block;
        }
        .section-head h2 {
            font-size: clamp(1.4rem, 2.4vw, 2.1rem);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.25;
            letter-spacing: -.01em;
            margin-bottom: 0;
        }
        .section-head .sub-text {
            color: var(--text-muted);
            font-size: .95rem;
            margin-top: 6px;
        }
        .section-head .link-more {
            font-size: .9rem;
            font-weight: 600;
            color: var(--primary);
            border-bottom: 2px solid var(--accent);
            padding-bottom: 2px;
            transition: all .3s;
            white-space: nowrap;
        }
        .section-head .link-more:hover {
            color: var(--accent-hover);
            border-color: var(--accent-hover);
        }
        .section-head-center {
            text-align: center;
            justify-content: center;
            flex-direction: column;
            align-items: center;
            margin-bottom: 3rem;
        }
        .section-head-center .tag-label::before {
            display: none;
        }
        .section-head-center h2 {
            max-width: 700px;
        }

        /* ===== Cards ===== */
        .game-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 1.75rem;
            height: 100%;
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .game-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--gold-gradient);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .4s ease;
        }
        .game-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .game-card:hover::before {
            transform: scaleX(1);
        }
        .game-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 8px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.4rem;
            margin-bottom: 1rem;
            transition: background .3s, color .3s;
        }
        .game-card:hover .card-icon {
            background: var(--primary);
            color: var(--accent);
        }
        .game-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .game-card p {
            font-size: .92rem;
            color: var(--text-body);
            margin-bottom: 0;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .game-card .card-tag {
            display: inline-block;
            font-size: .75rem;
            color: var(--accent-hover);
            border: 1px solid rgba(200, 169, 106, .5);
            border-radius: 20px;
            padding: 2px 12px;
            margin-bottom: 14px;
            background: rgba(200, 169, 106, .06);
        }
        .game-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .85rem;
            font-weight: 600;
            color: var(--primary);
            margin-top: 14px;
            transition: color .3s;
        }
        .game-card .card-link i {
            font-size: .75rem;
            transition: transform .3s;
        }
        .game-card:hover .card-link {
            color: var(--accent-hover);
        }
        .game-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== Image card ===== */
        .img-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-color);
            background: var(--bg-white);
            transition: all .3s ease;
            box-shadow: var(--shadow-card);
            height: 100%;
        }
        .img-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .img-card .img-wrap {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
            background: var(--primary-light);
        }
        .img-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .img-card:hover .img-wrap img {
            transform: scale(1.04);
        }
        .img-card .card-body {
            padding: 1.5rem;
        }
        .img-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .img-card .card-body p {
            font-size: .88rem;
            color: var(--text-muted);
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== Feature split ===== */
        .feature-split {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow .3s;
        }
        .feature-split:hover {
            box-shadow: var(--shadow-hover);
        }
        .feature-split .feature-media {
            position: relative;
            height: 100%;
            min-height: 280px;
            overflow: hidden;
        }
        .feature-split .feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            transition: transform .6s ease;
        }
        .feature-split:hover .feature-media img {
            transform: scale(1.03);
        }
        .feature-split .feature-content {
            padding: clamp(1.75rem, 4vw, 3rem);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .feature-split .feature-content h2 {
            font-size: clamp(1.3rem, 2vw, 1.8rem);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: -.01em;
        }
        .feature-split .feature-content p {
            font-size: .95rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-split .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }
        .feature-split .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: .9rem;
            color: var(--text-body);
            padding: 5px 0;
        }
        .feature-split .feature-list li i {
            color: var(--accent);
            font-size: .85rem;
        }

        /* ===== Number list ===== */
        .num-list {
            display: grid;
            gap: 24px;
        }
        .num-item {
            display: flex;
            gap: 18px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            transition: all .3s ease;
        }
        .num-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .num-item .num {
            font-family: "Barlow", "DIN Alternate", "Roboto", sans-serif;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
            min-width: 40px;
        }
        .num-item h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .num-item p {
            font-size: .88rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== Dark stats ===== */
        .stats-bar {
            background: var(--primary);
            padding: 2rem 0;
            border-top: 2px solid var(--accent);
            border-bottom: 2px solid var(--accent);
        }
        .stats-bar .stat-item {
            text-align: center;
            padding: 1rem 0;
        }
        .stats-bar .stat-num {
            font-family: "Barlow", "DIN Alternate", "Roboto", sans-serif;
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .stats-bar .stat-label {
            color: rgba(255, 255, 255, .8);
            font-size: .85rem;
            margin-top: 4px;
        }

        /* ===== CTA band ===== */
        .cta-band {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
            padding: clamp(2.5rem, 5vw, 4rem) 0;
            border-top: 2px solid var(--accent);
            border-bottom: 2px solid var(--accent);
        }
        .cta-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: .15;
        }
        .cta-band .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #fff;
        }
        .cta-band h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-band p {
            color: rgba(255, 255, 255, .75);
            font-size: .95rem;
            max-width: 680px;
            margin: 0 auto 26px;
        }
        .btn-light-gold {
            background: var(--gold-gradient);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1rem;
            padding: 12px 32px;
            box-shadow: var(--shadow-btn);
            transition: all .3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-light-gold:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 1.75rem;
            box-shadow: var(--shadow-card);
        }
        .faq-wrap .faq-item {
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border-color);
        }
        .faq-wrap .faq-item:last-child {
            border-bottom: none;
        }
        .faq-wrap .faq-q {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            margin-bottom: 0;
        }
        .faq-wrap .faq-q i {
            color: var(--accent);
            font-size: 1rem;
            transition: transform .3s;
            flex-shrink: 0;
        }
        .faq-wrap .faq-item.open .faq-q i {
            transform: rotate(45deg);
        }
        .faq-wrap .faq-a {
            font-size: .9rem;
            color: var(--text-muted);
            line-height: 1.7;
            padding-top: 8px;
            display: none;
        }
        .faq-wrap .faq-item.open .faq-a {
            display: block;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .8);
            padding: 3.5rem 0 0;
            border-top: 2px solid var(--accent);
        }
        .footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
        }
        .footer .footer-desc {
            font-size: .88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, .6);
            margin-bottom: 16px;
            max-width: 360px;
        }
        .footer .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer .footer-social a {
            width: 36px;
            height: 36px;
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, .7);
            font-size: .85rem;
            transition: all .3s;
        }
        .footer .footer-social a:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--primary-dark);
        }
        .footer h5 {
            color: #fff;
            font-size: .95rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links li {
            margin-bottom: 8px;
        }
        .footer .footer-links a {
            color: rgba(255, 255, 255, .6);
            font-size: .88rem;
            transition: color .3s;
        }
        .footer .footer-links a:hover {
            color: var(--accent);
        }
        .footer .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-contact li {
            color: rgba(255, 255, 255, .6);
            font-size: .86rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer .footer-contact i {
            color: var(--accent);
            width: 16px;
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 1.5rem 0;
            margin-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .8rem;
            color: rgba(255, 255, 255, .45);
        }
        .footer .footer-bottom a {
            color: rgba(255, 255, 255, .45);
        }
        .footer .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Back to top ===== */
        .back-to-top {
            position: fixed;
            right: 24px;
            bottom: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: 1px solid var(--accent);
            background: var(--bg-white);
            color: var(--accent-hover);
            font-size: .9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all .4s ease;
            box-shadow: 0 4px 16px rgba(26, 60, 52, .1);
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--accent);
            color: var(--primary);
        }

        /* ===== Utility ===== */
        .text-accent {
            color: var(--accent-hover) !important;
        }
        .text-main {
            color: var(--text-main) !important;
        }
        .mt-2r {
            margin-top: 2rem;
        }
        .mb-2r {
            margin-bottom: 2rem;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .custom-navbar .navbar-nav {
                padding: 12px 0;
            }
            .custom-navbar .nav-link {
                padding: 10px 16px !important;
            }
            .custom-navbar .btn-nav-cta {
                margin: 10px 16px;
                width: fit-content;
            }
            .feature-split .feature-media {
                min-height: 220px;
                position: relative;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }
        @media (max-width: 767.98px) {
            .top-bar .top-left .hide-sm {
                display: none;
            }
            .top-bar .top-right .hide-sm {
                display: none;
            }
            .category-hero {
                padding: 2.5rem 0;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero .hero-sub {
                font-size: .92rem;
            }
            .game-card {
                padding: 1.25rem;
            }
            .feature-split .feature-media {
                min-height: 200px;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .btn-gold,
            .btn-outline-primary-custom,
            .btn-light-gold {
                padding: 10px 20px;
                min-height: 44px;
                font-size: .88rem;
            }
            .back-to-top {
                right: 16px;
                bottom: 16px;
                width: 40px;
                height: 40px;
            }
        }

/* roulang page: article */
:root {
  --primary: #1A3C34;
  --primary-dark: #0F2A24;
  --primary-light: #EDF3F0;
  --accent: #C8A96A;
  --accent-hover: #B89555;
  --bg-body: #F7F5F1;
  --bg-white: #FFFFFF;
  --bg-dark-section: #152B26;
  --text-main: #1F1F1F;
  --text-body: #4A4A4A;
  --text-muted: #8C8C8C;
  --border-color: #E8E2D8;
  --border-dark: #C9C0B0;
  --shadow-card: 0 2px 16px rgba(26,60,52,0.06);
  --shadow-hover: 0 8px 30px rgba(26,60,52,0.12);
  --shadow-btn: 0 4px 14px rgba(200,169,106,0.3);
  --radius: 10px;
  --radius-sm: 6px;
  --transition: all .3s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-body);
  color: var(--text-body);
  line-height: 1.7;
  font-size: .98rem;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
}

.container {
  max-width: 1200px;
}

.reveal {
  transition: opacity .6s ease, transform .6s ease;
}

.js-reveal {
  opacity: 0;
  transform: translateY(24px);
}

.js-reveal.revealed {
  opacity: 1;
  transform: none;
}

/* ===== TopBar ===== */
.topbar {
  background: var(--primary-dark);
  color: rgba(255,255,255,.85);
  font-size: .8rem;
  height: 36px;
  display: flex;
  align-items: center;
}

.topbar a {
  color: rgba(255,255,255,.85);
  margin-left: 1.1rem;
  transition: var(--transition);
}

.topbar a:hover {
  color: var(--accent);
}

.topbar-cta {
  border: 1px solid var(--accent);
  border-radius: 20px;
  padding: .12rem .8rem;
  font-weight: 500;
}

/* ===== Navbar ===== */
.custom-navbar {
  background: rgba(247,245,241,.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 12px rgba(0,0,0,.04);
  padding: .7rem 0;
}

.custom-navbar .navbar-brand {
  display: flex;
  align-items: center;
  gap: .55rem;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-weight: 800;
  font-size: .9rem;
  letter-spacing: .5px;
  flex-shrink: 0;
}

.brand-text {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -.01em;
  white-space: nowrap;
}

.custom-navbar .navbar-nav .nav-link {
  color: var(--text-main);
  font-weight: 500;
  position: relative;
  padding: .5rem .75rem;
  margin: 0 .15rem;
}

.custom-navbar .navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  left: .75rem;
  right: 100%;
  bottom: .15rem;
  height: 2px;
  background: var(--accent);
  transition: right .3s ease;
}

.custom-navbar .navbar-nav .nav-link:hover::after,
.custom-navbar .navbar-nav .nav-link.active::after {
  right: .75rem;
}

.custom-navbar .navbar-nav .nav-link:hover,
.custom-navbar .navbar-nav .nav-link.active {
  color: var(--primary);
}

.btn-nav-cta {
  margin-left: .8rem;
  white-space: nowrap;
}

.navbar-toggler {
  border: 1px solid var(--border-dark);
  border-radius: 6px;
  padding: .35rem .55rem;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(200,169,106,.3);
}

/* ===== Buttons ===== */
.btn-gold {
  background: linear-gradient(135deg, #C8A96A, #E0C68D 50%, #C8A96A);
  color: var(--primary-dark);
  font-weight: 600;
  border: none;
  border-radius: 4px;
  padding: .7rem 1.75rem;
  box-shadow: var(--shadow-btn);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}

.btn-gold:hover,
.btn-gold:focus {
  background: var(--accent-hover);
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200,169,106,.4);
}

.btn-gold:active {
  transform: translateY(0);
  filter: brightness(.96);
}

.btn-outline {
  border: 1.5px solid var(--primary);
  color: var(--primary);
  background: transparent;
  padding: .7rem 1.75rem;
  border-radius: 4px;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ===== Breadcrumb ===== */
.breadcrumb-band {
  background: var(--bg-body);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.breadcrumb-wrap {
  font-size: .85rem;
  color: var(--text-muted);
}

.breadcrumb-wrap a {
  color: var(--text-muted);
}

.breadcrumb-wrap a:hover {
  color: var(--primary);
}

.breadcrumb-wrap .sep {
  color: var(--border-dark);
  margin: 0 .5rem;
}

.breadcrumb-wrap .current {
  color: var(--text-main);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 340px;
  display: inline-block;
  vertical-align: bottom;
}

/* ===== Article Hero ===== */
.article-hero {
  background: var(--bg-body);
  padding: 3.2rem 0 2.8rem;
  position: relative;
  border-bottom: 1px solid var(--border-color);
}

.article-hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent 45%);
}

.article-header-inner {
  max-width: 840px;
  margin: 0 auto;
  text-align: center;
}

.article-category-badge {
  display: inline-block;
  border: 1px solid var(--accent);
  color: var(--accent-hover);
  background: rgba(200,169,106,.08);
  border-radius: 20px;
  padding: .22rem .9rem;
  font-size: .8rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}

.article-title {
  font-size: clamp(1.75rem, 3.4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.02em;
  color: var(--text-main);
  margin-bottom: 1.2rem;
  word-break: break-word;
}

.article-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .7rem;
  color: var(--text-muted);
  font-size: .88rem;
  flex-wrap: wrap;
}

.article-meta .meta-divider {
  color: var(--border-dark);
}

/* ===== Article Body ===== */
.article-main {
  background: var(--bg-white);
  padding: 3rem 0 0;
}

.article-body-wrap {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-body);
}

.article-content p {
  margin-bottom: 1.5rem;
}

.article-content h2,
.article-content h3 {
  color: var(--text-main);
  border-left: 2px solid var(--accent);
  padding-left: 1rem;
  margin: 2.4rem 0 1.1rem;
  line-height: 1.4;
}

.article-content h2 {
  font-size: 1.55rem;
  font-weight: 700;
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

.article-content img {
  max-width: 100%;
  border-radius: var(--radius-sm);
  margin: 2rem 0;
  box-shadow: var(--shadow-card);
}

.article-content blockquote {
  background: var(--primary-light);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.2rem 1.5rem;
  margin: 2rem 0;
  color: var(--primary);
  font-weight: 500;
}

.article-content ul,
.article-content ol {
  padding-left: 1.4rem;
  margin-bottom: 1.5rem;
}

.article-content li {
  margin-bottom: .55rem;
}

.article-content a {
  color: var(--accent-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content a:hover {
  color: var(--primary);
}

.article-empty {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}

.article-empty i {
  font-size: 3rem;
  color: var(--accent);
  margin-bottom: 1rem;
  display: block;
}

.article-empty h3 {
  color: var(--text-main);
  font-weight: 700;
  margin-bottom: .6rem;
}

.article-empty p {
  margin-bottom: 1.5rem;
}

/* ===== Article Footer Bar ===== */
.article-footer-bar {
  max-width: 780px;
  margin: 0 auto;
  padding: 2.2rem 1.5rem 0;
}

.article-tags {
  display: flex;
  gap: .6rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.tag-item {
  border: 1px solid var(--accent);
  color: var(--primary);
  background: var(--bg-body);
  border-radius: 20px;
  padding: .25rem .9rem;
  font-size: .8rem;
  font-weight: 500;
}

.article-nav-links {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid var(--border-color);
  padding: 1.5rem 0 3rem;
}

.article-nav-links a {
  color: var(--text-body);
  font-size: .9rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: .45rem;
}

.article-nav-links a:hover {
  color: var(--accent-hover);
}

/* ===== Related Section ===== */
.related-section {
  background: var(--bg-body);
  padding: clamp(3rem, 6vw, 4.5rem) 0;
  border-top: 1px solid var(--border-color);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent-hover);
  letter-spacing: .08em;
  margin-bottom: .6rem;
}

.section-label::before {
  content: '';
  width: 22px;
  height: 2px;
  background: var(--accent);
  display: inline-block;
}

.related-title {
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -.01em;
  margin-bottom: .4rem;
}

.section-sub {
  color: var(--text-muted);
  font-size: .95rem;
  margin-bottom: 2.2rem;
}

.related-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.related-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
  background: var(--primary-light);
}

.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.related-card:hover .related-img img {
  transform: scale(1.03);
}

.related-img .img-badge {
  position: absolute;
  top: .9rem;
  left: .9rem;
  background: rgba(255,255,255,.92);
  color: var(--primary);
  border: 1px solid var(--accent);
  border-radius: 20px;
  font-size: .72rem;
  font-weight: 600;
  padding: .2rem .8rem;
  backdrop-filter: blur(4px);
}

.related-body {
  padding: 1.4rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.related-card h3 {
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: .55rem;
  line-height: 1.4;
}

.related-desc {
  color: var(--text-muted);
  font-size: .88rem;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 1.1rem;
  flex: 1;
}

.related-more {
  color: var(--accent-hover);
  font-size: .85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}

.related-more i {
  transition: transform .3s ease;
}

.related-more:hover i {
  transform: translateX(4px);
}

/* ===== CTA Band ===== */
.cta-band {
  background: linear-gradient(rgba(15,42,36,.88), rgba(15,42,36,.88)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  color: #fff;
  padding: clamp(3rem, 6vw, 4.5rem) 0;
  text-align: center;
}

.cta-band h2 {
  color: #fff;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  font-weight: 700;
  margin-bottom: .6rem;
}

.cta-band p {
  color: rgba(255,255,255,.75);
  font-size: .95rem;
  margin-bottom: 1.8rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Footer ===== */
.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,.8);
  padding: clamp(3rem, 5vw, 4.5rem) 0 0;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent 60%);
}

.footer .footer-brand {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
}

.footer-desc {
  color: rgba(255,255,255,.6);
  font-size: .9rem;
  line-height: 1.75;
  margin-bottom: 1.2rem;
}

.footer-social {
  display: flex;
  gap: .6rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255,255,255,.18);
  color: rgba(255,255,255,.7);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--primary-dark);
}

.footer h5 {
  color: #fff;
  font-size: .95rem;
  font-weight: 600;
  margin-bottom: 1.1rem;
}

.footer-links,
.footer-contact {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li,
.footer-contact li {
  margin-bottom: .6rem;
}

.footer-links a {
  color: rgba(255,255,255,.6);
  font-size: .88rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-contact li {
  color: rgba(255,255,255,.6);
  font-size: .88rem;
}

.footer-contact i {
  color: var(--accent);
  margin-right: .5rem;
  width: 16px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  margin-top: 1.5rem;
  padding: 1.2rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem;
  color: rgba(255,255,255,.45);
  font-size: .82rem;
}

.footer-bottom a {
  color: rgba(255,255,255,.45);
}

.footer-bottom a:hover {
  color: var(--accent);
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  width: 44px;
  height: 44px;
  border: 1px solid var(--accent);
  background: var(--bg-white);
  color: var(--accent-hover);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: var(--transition);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.back-to-top:hover {
  background: var(--accent);
  color: var(--primary-dark);
  box-shadow: var(--shadow-btn);
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .custom-navbar .navbar-collapse {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem 1.2rem 1.2rem;
    margin-top: .8rem;
    box-shadow: var(--shadow-card);
  }

  .custom-navbar .navbar-nav .nav-link {
    padding: .65rem .5rem;
    border-bottom: 1px solid var(--border-color);
  }

  .custom-navbar .navbar-nav .nav-link::after {
    display: none;
  }

  .btn-nav-cta {
    margin-left: 0;
    margin-top: .8rem;
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 767.98px) {
  .topbar {
    font-size: .75rem;
  }

  .topbar-right a:not(.topbar-cta) {
    display: none;
  }

  .article-hero {
    padding: 2.5rem 0 2.2rem;
  }

  .article-title {
    font-size: clamp(1.5rem, 5vw, 1.85rem);
    line-height: 1.35;
  }

  .article-meta {
    font-size: .82rem;
    gap: .45rem;
  }

  .article-body-wrap {
    padding: 0 1.2rem;
  }

  .article-content {
    font-size: .98rem;
    line-height: 1.75;
  }

  .article-nav-links {
    flex-direction: column;
    align-items: flex-start;
  }

  .breadcrumb-wrap .current {
    max-width: 180px;
  }

  .footer-bottom {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }
}

/* roulang page: category3 */
:root {
            --primary: #1A3C34;
            --primary-dark: #0F2A24;
            --primary-light: #EDF3F0;
            --accent: #C8A96A;
            --accent-hover: #B89555;
            --bg-body: #F7F5F1;
            --bg-white: #FFFFFF;
            --bg-dark-section: #152B26;
            --text-main: #1F1F1F;
            --text-body: #4A4A4A;
            --text-muted: #8C8C8C;
            --border-color: #E8E2D8;
            --border-dark: #C9C0B0;
            --gold-gradient: linear-gradient(135deg, #C8A96A, #E0C68D 50%, #C8A96A);
            --shadow-card: 0 2px 16px rgba(26, 60, 52, 0.06);
            --shadow-hover: 0 8px 30px rgba(26, 60, 52, 0.12);
            --shadow-btn: 0 4px 14px rgba(200, 169, 106, 0.3);
            --radius-card: 10px;
            --radius-btn: 4px;
            --radius-img: 6px;
            --radius-tag: 20px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            background-color: var(--bg-body);
            color: var(--text-body);
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--primary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .container {
            max-width: 1200px;
        }

        /* ===== Top Bar ===== */
        .top-bar {
            background-color: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.85rem;
            padding: 0.4rem 0;
            line-height: 1.4;
        }

        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .top-bar a {
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.85rem;
            transition: color 0.3s;
        }

        .top-bar a:hover {
            color: var(--accent);
        }

        .top-bar .top-actions {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }

        .top-bar .btn-top-entry {
            border: 1px solid var(--accent);
            color: var(--accent);
            padding: 0.15rem 0.9rem;
            border-radius: var(--radius-tag);
            font-size: 0.8rem;
            line-height: 1.6;
            transition: all 0.3s;
        }

        .top-bar .btn-top-entry:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }

        @media (max-width: 767px) {
            .top-bar .top-actions a:not(.btn-top-entry) {
                display: none;
            }

            .top-bar .top-actions {
                gap: 0.5rem;
            }
        }

        /* ===== Navbar ===== */
        .custom-navbar {
            background-color: var(--bg-body);
            border-bottom: 1px solid var(--border-color);
            padding: 0.75rem 0;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }

        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            font-weight: 700;
            color: var(--text-main);
            font-size: 1.25rem;
        }

        .custom-navbar .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: var(--accent);
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.05em;
        }

        .custom-navbar .brand-text {
            color: var(--text-main);
        }

        .custom-navbar .navbar-nav {
            gap: 0.4rem;
        }

        .custom-navbar .nav-link {
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 0.9rem !important;
            position: relative;
            transition: color 0.3s;
        }

        .custom-navbar .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.3s ease;
        }

        .custom-navbar .nav-link:hover {
            color: var(--primary);
        }

        .custom-navbar .nav-link:hover::after,
        .custom-navbar .nav-link.active::after {
            width: 100%;
        }

        .custom-navbar .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .btn-gold {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
            border: 1px solid var(--accent);
            padding: 0.6rem 1.6rem;
            border-radius: var(--radius-btn);
            font-size: 0.95rem;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-btn);
        }

        .btn-gold:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(200, 169, 106, 0.4);
        }

        .btn-outline-primary {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            font-weight: 600;
            padding: 0.6rem 1.6rem;
            border-radius: var(--radius-btn);
            font-size: 0.95rem;
            transition: all 0.3s ease;
        }

        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(26, 60, 52, 0.2);
        }

        .btn-nav-cta {
            padding: 0.5rem 1.3rem;
            font-size: 0.9rem;
            margin-left: 0.5rem;
        }

        .custom-navbar .navbar-toggler {
            border: 1px solid var(--border-dark);
            border-radius: 4px;
            padding: 0.4rem 0.6rem;
        }

        .custom-navbar .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(200, 169, 106, 0.25);
            border-color: var(--accent);
        }

        @media (max-width: 991px) {
            .custom-navbar .navbar-collapse {
                padding-top: 1rem;
            }

            .custom-navbar .nav-link {
                padding: 0.6rem 0.5rem !important;
            }

            .btn-nav-cta {
                margin-left: 0;
                margin-top: 0.8rem;
                display: inline-block;
                text-align: center;
            }
        }

        @media (max-width: 767px) {
            .custom-navbar .navbar-brand {
                font-size: 1.05rem;
            }

            .custom-navbar .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }
        }

        /* ===== Page Header ===== */
        .category-header {
            padding: clamp(3.5rem, 7vw, 5.5rem) 0 2.8rem;
            background: var(--bg-body);
            border-bottom: 1px solid var(--border-color);
            position: relative;
        }

        .category-header::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent) 0%, transparent 60%);
        }

        .breadcrumb-line {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
        }

        .breadcrumb-line a {
            color: var(--primary);
        }

        .breadcrumb-line a:hover {
            color: var(--accent-hover);
        }

        .breadcrumb-line .divider {
            color: var(--border-dark);
            margin: 0 0.2rem;
        }

        .breadcrumb-line .current {
            color: var(--text-muted);
        }

        .category-header h1 {
            font-size: clamp(1.85rem, 3.6vw, 3rem);
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-main);
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }

        .category-header h1 .gold {
            color: var(--accent-hover);
        }

        .category-header .lead-text {
            font-size: 1.05rem;
            color: var(--text-body);
            max-width: 720px;
            line-height: 1.7;
        }

        /* ===== Section base ===== */
        .section {
            padding: clamp(3.5rem, 7vw, 6rem) 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-hover);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 0.8rem;
        }

        .section-label::before {
            content: "";
            display: inline-block;
            width: 28px;
            height: 2px;
            background: var(--accent);
        }

        .section-title {
            font-size: clamp(1.4rem, 2.4vw, 2.2rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-main);
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 0.95rem;
            max-width: 600px;
            margin-bottom: 2.5rem;
        }

        /* ===== Feature card ===== */
        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 1.8rem 1.75rem;
            height: 100%;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gold-gradient);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 10px;
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
            transition: all 0.3s;
        }

        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: var(--accent);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 0.6rem;
            line-height: 1.4;
        }

        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== Showcase card ===== */
        .showcase-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 100%;
            transition: all 0.3s ease;
        }

        .showcase-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }

        .showcase-card .card-img-wrap {
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--primary-light);
        }

        .showcase-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .showcase-card:hover .card-img-wrap img {
            transform: scale(1.03);
        }

        .showcase-card .card-body {
            padding: 1.5rem 1.5rem 1.6rem;
        }

        .showcase-card .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 500;
            color: var(--accent-hover);
            border: 1px solid var(--accent);
            border-radius: var(--radius-tag);
            padding: 0.2rem 0.8rem;
            margin-bottom: 0.8rem;
        }

        .showcase-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 0.5rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .showcase-card p {
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 1rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .showcase-card .card-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .showcase-card .card-meta .read-more {
            color: var(--primary);
            font-weight: 500;
        }

        .showcase-card .card-meta .read-more i {
            font-size: 0.75rem;
            transition: transform 0.3s;
        }

        .showcase-card .card-meta .read-more:hover {
            color: var(--accent-hover);
        }

        .showcase-card .card-meta .read-more:hover i {
            transform: translateX(4px);
        }

        /* ===== Large feature split ===== */
        .split-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .split-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }

        .split-card .split-img {
            height: 100%;
            min-height: 300px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .split-card .split-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, transparent 60%, rgba(21, 43, 38, 0.15));
        }

        .split-card .split-body {
            padding: 2.2rem 2rem;
        }

        .split-card .split-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-hover);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 0.6rem;
        }

        .split-card h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: 1rem;
        }

        .split-card .split-desc {
            font-size: 0.98rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

        .split-card .split-list {
            margin-bottom: 1.8rem;
        }

        .split-card .split-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.7rem;
            font-size: 0.92rem;
            color: var(--text-body);
            margin-bottom: 0.6rem;
        }

        .split-card .split-list li i {
            color: var(--accent);
            font-size: 0.9rem;
            margin-top: 0.2rem;
        }

        /* ===== Number steps ===== */
        .steps-wrap {
            background: var(--primary-light);
            border-radius: var(--radius-card);
            padding: 2rem;
        }

        .step-item {
            display: flex;
            gap: 1.2rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid rgba(26, 60, 52, 0.1);
        }

        .step-item:last-child {
            border-bottom: none;
        }

        .step-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            font-family: "Barlow", "DIN Alternate", "Roboto", sans-serif;
            line-height: 1;
            min-width: 56px;
        }

        .step-item h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 0.3rem;
        }

        .step-item p {
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== Compare cards ===== */
        .compare-wrap {
            background: var(--bg-dark-section);
            border-radius: var(--radius-card);
            padding: clamp(2rem, 4vw, 3.5rem);
            position: relative;
            overflow: hidden;
        }

        .compare-wrap::before {
            content: "PG";
            position: absolute;
            right: -10px;
            top: -20px;
            font-size: clamp(6rem, 12vw, 10rem);
            font-weight: 800;
            color: rgba(255, 255, 255, 0.04);
            line-height: 1;
            pointer-events: none;
        }

        .compare-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            padding: 2rem 1.8rem;
            height: 100%;
            transition: all 0.3s ease;
        }

        .compare-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--accent);
            transform: translateY(-4px);
        }

        .compare-card h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .compare-card .compare-tag {
            display: inline-block;
            color: var(--accent);
            border: 1px solid var(--accent);
            border-radius: var(--radius-tag);
            font-size: 0.75rem;
            padding: 0.2rem 0.8rem;
            margin-bottom: 1rem;
        }

        .compare-card p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.92rem;
            line-height: 1.75;
            margin-bottom: 1rem;
        }

        .compare-card ul li {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            padding: 0.3rem 0;
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
        }

        .compare-card ul li i {
            color: var(--accent);
            font-size: 0.85rem;
            margin-top: 0.25rem;
        }

        .compare-divider {
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 700;
            font-size: 1.2rem;
        }

        @media (max-width: 767px) {
            .compare-divider {
                padding: 0.8rem 0;
            }

            .compare-divider i {
                transform: rotate(90deg);
            }
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background:
                linear-gradient(rgba(15, 42, 36, 0.82), rgba(15, 42, 36, 0.88)),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: clamp(3rem, 6vw, 5rem) 0;
            text-align: center;
            color: #fff;
            position: relative;
        }

        .cta-banner h2 {
            font-size: clamp(1.6rem, 2.8vw, 2.4rem);
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: #fff;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto 2rem;
        }

        .cta-banner .btn-gold {
            padding: 0.8rem 2.4rem;
            font-size: 1.05rem;
        }

        .cta-banner .btn-gold:hover {
            transform: translateY(-2px);
        }

        /* ===== Inline CTA bar ===== */
        .cta-inline {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 2.2rem 2.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-inline::after {
            content: "";
            position: absolute;
            right: -30px;
            bottom: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            border: 2px solid rgba(200, 169, 106, 0.2);
        }

        .cta-inline h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
            color: #fff;
        }

        .cta-inline p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.92rem;
            margin-bottom: 0;
        }

        .cta-inline .btn-gold {
            flex-shrink: 0;
        }

        @media (max-width: 767px) {
            .cta-inline {
                padding: 2rem 1.5rem;
                text-align: center;
                justify-content: center;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 1.2rem 0;
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            padding: 0.3rem 0;
            transition: color 0.3s;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .icon {
            width: 28px;
            height: 28px;
            border: 1px solid var(--border-dark);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: var(--accent);
            transition: all 0.3s;
            flex-shrink: 0;
            margin-left: 1rem;
        }

        .faq-question.active .icon {
            background: var(--accent);
            color: var(--primary-dark);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            color: var(--text-body);
            font-size: 0.93rem;
            line-height: 1.8;
        }

        .faq-answer.open {
            max-height: 300px;
        }

        .faq-side {
            position: sticky;
            top: 100px;
        }

        .faq-side .btn-outline-primary {
            margin-top: 1rem;
        }

        /* ===== Footer ===== */
        .footer {
            background-color: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: clamp(3rem, 6vw, 5rem) 0 1.8rem;
            border-top: 2px solid var(--accent);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }

        .footer .footer-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--accent);
            color: var(--primary-dark);
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 700;
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-bottom: 1.2rem;
            line-height: 1.75;
        }

        .footer-social {
            display: flex;
            gap: 0.7rem;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            transition: all 0.3s;
        }

        .footer-social a:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--primary-dark);
        }

        .footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
        }

        .footer-links li {
            margin-bottom: 0.55rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color 0.3s;
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 0.7rem;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            margin-bottom: 0.6rem;
        }

        .footer-contact li i {
            color: var(--accent);
            margin-top: 0.2rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            margin-top: 2rem;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.82rem;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Back to top ===== */
        .back-top {
            position: fixed;
            right: 24px;
            bottom: 24px;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 1px solid var(--accent);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            z-index: 99;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }

        .back-top.show {
            opacity: 1;
            visibility: visible;
        }

        .back-top:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        /* ===== Animations ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: all 0.5s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            .fade-up {
                opacity: 1;
                transform: none;
                transition: none;
            }
        }

        /* ===== Utility ===== */
        .text-gold {
            color: var(--accent) !important;
        }

        .bg-dark-section {
            background: var(--bg-dark-section);
        }

/* roulang page: category2 */
:root {
            --primary: #1A3C34;
            --primary-dark: #0F2A24;
            --primary-light: #EDF3F0;
            --accent: #C8A96A;
            --accent-hover: #B89555;
            --bg-body: #F7F5F1;
            --bg-white: #FFFFFF;
            --bg-dark-section: #152B26;
            --text-main: #1F1F1F;
            --text-body: #4A4A4A;
            --text-muted: #8C8C8C;
            --border-color: #E8E2D8;
            --border-dark: #C9C0B0;
            --gold-gradient: linear-gradient(135deg, #C8A96A, #E0C68D 50%, #C8A96A);
            --shadow-card: 0 2px 16px rgba(26,60,52,0.06);
            --shadow-hover: 0 8px 30px rgba(26,60,52,0.12);
            --shadow-btn: 0 4px 14px rgba(200,169,106,0.3);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.75;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: all .3s ease;
        }

        a:hover {
            color: var(--accent-hover);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        .container {
            max-width: 1200px;
        }

        .section {
            padding: clamp(3.5rem, 7vw, 6.5rem) 0;
        }

        .text-gold {
            color: var(--accent) !important;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            font-size: .85rem;
            font-weight: 600;
            color: var(--accent-hover);
            letter-spacing: .08em;
            text-transform: uppercase;
            margin-bottom: .75rem;
        }

        .section-label .label-line {
            display: inline-block;
            width: 28px;
            height: 2px;
            background: var(--gold-gradient);
        }

        .section-title {
            font-size: clamp(1.4rem, 2.4vw, 2.2rem);
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.01em;
            margin-bottom: .5rem;
        }

        .section-lead {
            color: var(--text-muted);
            font-size: .95rem;
            max-width: 480px;
        }

        .section-title.text-white {
            color: #fff;
        }

        .section-lead.text-white-70 {
            color: rgba(255,255,255,.7);
        }

        .btn {
            border-radius: 4px;
            font-weight: 600;
            transition: all .3s ease;
            padding: .6rem 1.6rem;
        }

        .btn-gold {
            background: var(--accent);
            border: 1px solid var(--accent);
            color: var(--primary-dark);
            border-radius: 4px;
            font-weight: 600;
        }

        .btn-gold:hover,
        .btn-gold:focus {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: #fff;
            box-shadow: var(--shadow-btn);
            transform: translateY(-2px);
        }

        .btn-gold.btn-lg {
            padding: .8rem 2rem;
            font-size: 1rem;
        }

        .btn-outline-primary {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            border-radius: 4px;
            font-weight: 600;
            padding: .6rem 1.6rem;
        }

        .btn-outline-primary:hover,
        .btn-outline-primary:focus {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-outline-light-custom {
            background: transparent;
            border: 1.5px solid rgba(255,255,255,.6);
            color: #fff;
            border-radius: 4px;
            font-weight: 600;
        }

        .btn-outline-light-custom:hover {
            background: rgba(255,255,255,.1);
            border-color: #fff;
            color: #fff;
        }

        .btn-lg {
            min-height: 48px;
        }

        /* TopBar */
        .topbar {
            background: var(--primary-dark);
            color: rgba(255,255,255,.85);
            font-size: .82rem;
            padding: .4rem 0;
            border-bottom: 1px solid rgba(255,255,255,.05);
        }

        .topbar a {
            color: rgba(255,255,255,.8);
            font-size: .82rem;
            margin-left: 1rem;
        }

        .topbar a:hover {
            color: var(--accent);
        }

        .topbar .divider {
            color: rgba(255,255,255,.25);
            margin-left: 1rem;
        }

        .topbar-left i {
            color: var(--accent);
            margin-right: .3rem;
        }

        /* Navbar */
        .custom-navbar {
            background: var(--bg-body);
            box-shadow: 0 2px 12px rgba(0,0,0,.04);
            padding: .7rem 0;
            border-bottom: 1px solid var(--border-color);
        }

        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: .5rem;
        }

        .custom-navbar .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--primary);
            color: var(--accent);
            font-weight: 800;
            border-radius: 8px;
            font-size: .9rem;
            letter-spacing: .02em;
            border: 1px solid rgba(255,255,255,.1);
        }

        .custom-navbar .brand-text {
            color: var(--primary);
            font-weight: 700;
            font-size: 1.3rem;
            letter-spacing: -0.01em;
        }

        .custom-navbar .navbar-nav .nav-link {
            color: var(--text-main);
            font-weight: 500;
            padding: .5rem 1rem !important;
            position: relative;
            font-size: .95rem;
        }

        .custom-navbar .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transition: transform .3s ease;
            transform-origin: left;
        }

        .custom-navbar .navbar-nav .nav-link:hover::after,
        .custom-navbar .navbar-nav .nav-link.active::after {
            transform: scaleX(1);
        }

        .custom-navbar .navbar-nav .nav-link:hover,
        .custom-navbar .navbar-nav .nav-link.active {
            color: var(--accent-hover);
        }

        .custom-navbar .btn-nav-cta {
            padding: .55rem 1.4rem;
            font-size: .9rem;
            white-space: nowrap;
        }

        .custom-navbar .navbar-toggler {
            border-color: var(--border-dark);
            border-radius: 6px;
        }

        .custom-navbar .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(200,169,106,.3);
        }

        .custom-navbar .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231A3C34' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Page Header */
        .page-header {
            padding: 2.5rem 0 3.5rem;
            background: var(--bg-body);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .page-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--gold-gradient);
            opacity: .6;
        }

        .page-header .breadcrumb {
            margin-bottom: 1.25rem;
            font-size: .85rem;
        }

        .page-header .breadcrumb-item a {
            color: var(--primary);
        }

        .page-header .breadcrumb-item.active {
            color: var(--text-muted);
        }

        .page-header .breadcrumb-item+.breadcrumb-item::before {
            color: var(--border-dark);
            content: "/";
        }

        .header-badge {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            border: 1.5px solid var(--accent);
            border-radius: 20px;
            padding: .3rem 1rem;
            font-size: .82rem;
            font-weight: 500;
            color: var(--accent-hover);
            background: rgba(255,255,255,.7);
            margin-bottom: 1.25rem;
        }

        .page-header h1 {
            font-size: clamp(1.85rem, 3.6vw, 3.2rem);
            line-height: 1.2;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }

        .header-desc {
            font-size: 1rem;
            color: var(--text-body);
            max-width: 560px;
            line-height: 1.8;
        }

        .header-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            margin-top: 1.5rem;
            font-size: .85rem;
            color: var(--text-muted);
        }

        .header-trust span {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
        }

        .header-trust i {
            color: var(--accent);
        }

        .header-visual {
            position: relative;
            border-radius: 14px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            aspect-ratio: 4/3;
        }

        .header-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 14px;
        }

        .float-card {
            position: absolute;
            background: rgba(255,255,255,.95);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: .7rem 1.1rem;
            font-size: .85rem;
            font-weight: 600;
            color: var(--primary);
            box-shadow: var(--shadow-hover);
            display: flex;
            align-items: center;
            gap: .5rem;
        }

        .float-card i {
            color: var(--accent);
            font-size: 1.1rem;
        }

        .float-card-1 {
            bottom: 20px;
            left: -10px;
        }

        .float-card-2 {
            top: 20px;
            right: -10px;
        }

        /* Feature Section */
        .features-section {
            background: var(--bg-white);
        }

        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            overflow: hidden;
            transition: all .3s ease;
            position: relative;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--gold-gradient);
            opacity: 0;
            transition: opacity .3s ease;
        }

        .feature-card:hover {
            border-color: var(--accent);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card-large .feature-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .feature-card-large .feature-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .feature-card-large:hover .feature-card-img img {
            transform: scale(1.03);
        }

        .feature-card-body {
            padding: 1.75rem;
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 1rem;
            border: 1px solid rgba(26,60,52,.1);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: .5rem;
        }

        .feature-card p {
            font-size: .92rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 1rem 0 0;
        }

        .feature-list li {
            font-size: .88rem;
            color: var(--text-body);
            padding: .25rem 0;
            display: flex;
            align-items: center;
            gap: .5rem;
        }

        .feature-list li i {
            color: var(--accent);
            font-size: .8rem;
        }

        .feature-strip {
            background: var(--primary-light);
            border-radius: 10px;
            border: 1px solid rgba(26,60,52,.08);
            margin-top: 1.5rem;
            font-size: .95rem;
            color: var(--primary);
            font-weight: 500;
        }

        /* Modes Section */
        .modes-section {
            background: var(--bg-body);
        }

        .mode-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 2rem 1.5rem;
            position: relative;
            transition: all .3s ease;
            height: 100%;
            overflow: hidden;
        }

        .mode-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--gold-gradient);
            opacity: 0;
            transition: opacity .3s ease;
        }

        .mode-card:hover {
            border-color: var(--accent);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .mode-card:hover::before {
            opacity: 1;
        }

        .mode-num {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--border-dark);
            margin-bottom: 1rem;
            display: block;
        }

        .mode-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--primary);
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 1.25rem;
        }

        .mode-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: .5rem;
        }

        .mode-card p {
            font-size: .88rem;
            color: var(--text-body);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* Process Section */
        .process-section {
            background: linear-gradient(145deg, var(--primary-dark) 0%, var(--bg-dark-section) 100%);
            position: relative;
            overflow: hidden;
        }

        .process-section::before {
            content: '04';
            position: absolute;
            right: 4%;
            top: 8%;
            font-size: clamp(5rem, 10vw, 9rem);
            font-weight: 800;
            color: rgba(255,255,255,.04);
            line-height: 1;
            z-index: 0;
        }

        .process-section .container {
            position: relative;
            z-index: 1;
        }

        .process-step {
            background: rgba(255,255,255,.04);
            border: 1px solid rgba(255,255,255,.08);
            border-radius: 10px;
            padding: 2rem 1.5rem;
            transition: all .3s ease;
            height: 100%;
        }

        .process-step:hover {
            background: rgba(255,255,255,.08);
            transform: translateY(-4px);
            border-color: rgba(200,169,106,.4);
        }

        .process-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 1rem;
            line-height: 1;
            font-family: "Barlow", "DIN Alternate", sans-serif;
        }

        .process-step h4 {
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: .5rem;
        }

        .process-step p {
            color: rgba(255,255,255,.65);
            font-size: .88rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Security Section */
        .security-section {
            background: var(--bg-white);
        }

        .security-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .security-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }

        .security-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.05rem;
            flex-shrink: 0;
            border: 1px solid rgba(26,60,52,.08);
        }

        .security-item h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: .25rem;
        }

        .security-item p {
            font-size: .88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .stats-panel {
            background: var(--primary);
            border-radius: 12px;
            padding: 2.5rem 1.5rem;
            position: relative;
            overflow: hidden;
        }

        .stats-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--gold-gradient);
        }

        .stat-num {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 800;
            color: var(--accent);
            font-family: "Barlow", "DIN Alternate", sans-serif;
            line-height: 1.2;
        }

        .stat-label {
            color: rgba(255,255,255,.75);
            font-size: .85rem;
            margin-top: .25rem;
        }

        .security-img {
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            aspect-ratio: 16/7;
        }

        .security-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .security-img:hover img {
            transform: scale(1.03);
        }

        /* FAQ Section */
        .faq-section {
            background: var(--bg-body);
        }

        .accordion-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 10px !important;
            margin-bottom: 1rem;
            overflow: hidden;
        }

        .accordion-button {
            background: var(--bg-white);
            color: var(--text-main);
            font-weight: 600;
            padding: 1.25rem 1.5rem;
            font-size: .95rem;
            box-shadow: none !important;
            border: none;
        }

        .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(200,169,106,.2) !important;
            z-index: 1;
        }

        .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 1.4rem;
            font-weight: 300;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            transition: transform .3s ease;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--accent-hover);
        }

        .accordion-body {
            padding: 0 1.5rem 1.25rem;
            color: var(--text-body);
            font-size: .92rem;
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            padding-top: 0;
        }

        .cta-banner {
            background: linear-gradient(rgba(15,42,36,.88), rgba(21,43,38,.94)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-radius: 14px;
            padding: clamp(3rem, 6vw, 5rem) 2rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-banner .gold-line {
            width: 60px;
            height: 2px;
            background: var(--gold-gradient);
            margin: 0 auto 1rem;
        }

        .cta-banner h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            margin-bottom: .75rem;
        }

        .cta-banner p {
            font-size: 1rem;
            color: rgba(255,255,255,.8);
            max-width: 600px;
            margin: 0 auto 1.5rem;
        }

        /* Footer */
        .footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,.75);
            border-top: 2px solid var(--accent);
            padding: 3.5rem 0 1.5rem;
        }

        .footer .footer-brand {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }

        .footer .footer-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,.12);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: .85rem;
        }

        .footer-desc {
            font-size: .88rem;
            color: rgba(255,255,255,.6);
            line-height: 1.7;
            margin-bottom: 1.25rem;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: .6rem;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid rgba(255,255,255,.2);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,.7);
            font-size: .9rem;
            transition: all .3s ease;
        }

        .footer-social a:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--primary-dark);
        }

        .footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            padding: .3rem 0;
        }

        .footer-links a {
            color: rgba(255,255,255,.6);
            font-size: .88rem;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: .6rem;
            padding: .35rem 0;
            font-size: .88rem;
            color: rgba(255,255,255,.6);
        }

        .footer-contact i {
            color: var(--accent);
            width: 20px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.1);
            padding-top: 1.5rem;
            margin-top: 2rem;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: .5rem;
            font-size: .82rem;
            color: rgba(255,255,255,.45);
        }

        .footer-bottom a {
            color: rgba(255,255,255,.45);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* Back to top */
        .back-to-top {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 1.5px solid var(--accent);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            cursor: pointer;
            box-shadow: var(--shadow-card);
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease;
            z-index: 999;
        }

        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            transform: translateY(-3px);
        }

        /* Reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity .5s ease, transform .5s ease;
        }

        .reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .custom-navbar .navbar-collapse {
                padding: 1rem 0;
            }

            .custom-navbar .navbar-nav {
                margin: 1rem 0 !important;
            }

            .custom-navbar .navbar-nav .nav-link {
                padding: .6rem 0 !important;
            }

            .custom-navbar .navbar-nav .nav-link::after {
                display: none;
            }

            .custom-navbar .btn-nav-cta {
                display: inline-block;
                margin-top: .5rem;
            }

            .float-card-1 {
                left: 10px;
            }

            .float-card-2 {
                right: 10px;
            }
        }

        @media (max-width: 767.98px) {
            .topbar .topbar-left span {
                display: none;
            }

            .topbar .topbar-left i {
                margin-right: 0;
            }

            .page-header {
                padding: 1.5rem 0 2.5rem;
            }

            .header-visual {
                margin-top: 1.5rem;
            }

            .float-card {
                padding: .5rem .8rem;
                font-size: .78rem;
            }

            .float-card-1 {
                bottom: 12px;
                left: 8px;
            }

            .float-card-2 {
                top: 12px;
                right: 8px;
            }

            .feature-strip {
                font-size: .85rem;
                padding: .75rem;
            }

            .stats-panel {
                padding: 1.5rem .75rem;
            }

            .process-step {
                padding: 1.5rem 1.25rem;
            }

            .cta-banner {
                padding: 2.5rem 1.25rem;
            }

            .cta-banner h2 {
                font-size: 1.4rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }

            .section {
                padding: 3rem 0;
            }
        }

        @media (max-width: 575.98px) {
            .page-header h1 {
                font-size: 1.65rem;
            }

            .header-desc {
                font-size: .9rem;
            }

            .btn-gold.btn-lg,
            .btn-outline-primary.btn-lg {
                width: 100%;
                text-align: center;
            }

            .d-flex.gap-3.mt-4 {
                flex-direction: column;
            }

            .header-trust {
                gap: .75rem;
                font-size: .8rem;
                flex-direction: column;
            }

            .mode-card,
            .feature-card-body {
                padding: 1.25rem;
            }

            .stat-num {
                font-size: 1.5rem;
            }

            .stat-label {
                font-size: .75rem;
            }

            .accordion-button {
                font-size: .88rem;
                padding: 1rem 1.25rem;
            }

            .accordion-body {
                padding: 0 1.25rem 1rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1A3C34;
            --primary-dark: #0F2A24;
            --primary-light: #EDF3F0;
            --accent: #C8A96A;
            --accent-hover: #B89555;
            --bg-body: #F7F5F1;
            --bg-white: #FFFFFF;
            --bg-dark-section: #152B26;
            --text-main: #1F1F1F;
            --text-body: #4A4A4A;
            --text-muted: #8C8C8C;
            --border-color: #E8E2D8;
            --border-dark: #C9C0B0;
            --gold-gradient: linear-gradient(135deg, #C8A96A, #E0C68D 50%, #C8A96A);
            --shadow-card: 0 2px 16px rgba(26, 60, 52, 0.06);
            --shadow-hover: 0 8px 30px rgba(26, 60, 52, 0.12);
            --shadow-btn: 0 4px 14px rgba(200, 169, 106, 0.3);
            --radius-card: 10px;
            --radius-btn: 4px;
            --radius-badge: 20px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.75;
            margin: 0;
            font-size: 0.95rem;
            -webkit-font-smoothing: antialiased;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.25;
            margin-bottom: 0.5rem;
        }

        h1 {
            font-size: clamp(1.85rem, 3.6vw, 3.2rem);
            letter-spacing: -0.02em;
        }

        h2 {
            font-size: clamp(1.4rem, 2.4vw, 2.2rem);
            letter-spacing: -0.01em;
        }

        h3 {
            font-size: 1.15rem;
            font-weight: 600;
        }

        p {
            margin-bottom: 1rem;
            color: var(--text-body);
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--accent-hover);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        .container {
            max-width: 1200px;
        }

        .section-padding {
            padding: clamp(3.5rem, 7vw, 6rem) 0;
        }

        .bg-lighter {
            background: var(--bg-white);
        }

        /* ===== Buttons ===== */
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            padding: 0.7rem 1.6rem;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            justify-content: center;
        }

        .btn-gold {
            background: var(--gold-gradient);
            color: var(--primary-dark);
            border: none;
            box-shadow: var(--shadow-btn);
            min-height: 46px;
        }

        .btn-gold:hover {
            background: var(--accent-hover);
            color: #fff;
            box-shadow: 0 6px 20px rgba(200, 169, 106, 0.4);
            transform: translateY(-2px);
        }

        .btn-outline-primary {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            min-height: 46px;
        }

        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(26, 60, 52, 0.15);
        }

        .btn-outline-light-gold {
            background: transparent;
            border: 1.5px solid var(--accent);
            color: var(--accent);
            min-height: 46px;
        }

        .btn-outline-light-gold:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
        }

        .btn-link-arrow:hover {
            color: var(--accent-hover);
            gap: 0.6rem;
        }

        .btn-link-arrow i {
            transition: transform 0.3s ease;
        }

        .btn-link-arrow:hover i {
            transform: translateX(4px);
        }

        /* ===== Badge / Tag ===== */
        .badge-tag {
            display: inline-block;
            padding: 0.28rem 0.85rem;
            border-radius: var(--radius-badge);
            border: 1px solid var(--accent);
            color: var(--primary);
            background: rgba(200, 169, 106, 0.08);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        .badge-gold-solid {
            background: var(--gold-gradient);
            color: var(--primary-dark);
            border: none;
            padding: 0.3rem 1rem;
            border-radius: var(--radius-badge);
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
        }

        /* ===== Section title block ===== */
        .section-head {
            margin-bottom: 2.5rem;
        }

        .section-eyebrow {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--accent-hover);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 0.75rem;
        }

        .section-eyebrow::before {
            content: "";
            width: 24px;
            height: 2px;
            background: var(--accent);
            display: inline-block;
        }

        .section-head p.lead {
            max-width: 560px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .section-head .text-end .btn-link-arrow {
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            .section-head .text-end {
                text-align: left !important;
                margin-top: 0.75rem;
            }
        }

        /* ===== TopBar ===== */
        .topbar {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.8rem;
            padding: 0.4rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .topbar a {
            color: rgba(255, 255, 255, 0.75);
            margin-left: 1rem;
            transition: color 0.3s;
        }

        .topbar a:hover {
            color: var(--accent);
        }

        .topbar-btn {
            border: 1px solid var(--accent);
            border-radius: 20px;
            padding: 0.15rem 0.9rem;
            color: var(--accent) !important;
            font-weight: 500;
            margin-left: 0.8rem;
            transition: all 0.3s;
        }

        .topbar-btn:hover {
            background: var(--accent);
            color: var(--primary-dark) !important;
        }

        .topbar .topbar-left i {
            color: var(--accent);
            margin-right: 0.3rem;
        }

        @media (max-width: 768px) {
            .topbar .topbar-right a:not(.topbar-btn) {
                display: none;
            }
        }

        /* ===== Navbar ===== */
        .custom-navbar {
            background: rgba(247, 245, 241, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            padding: 0.6rem 0;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }

        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-weight: 700;
            color: var(--primary);
            font-size: 1.25rem;
            letter-spacing: -0.01em;
        }

        .custom-navbar .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-weight: 800;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            box-shadow: 0 4px 12px rgba(26, 60, 52, 0.2);
        }

        .custom-navbar .navbar-nav {
            gap: 0.2rem;
        }

        .custom-navbar .nav-link {
            font-weight: 500;
            color: var(--text-main);
            padding: 0.5rem 0.9rem;
            position: relative;
            border-radius: 4px;
        }

        .custom-navbar .nav-link::after {
            content: "";
            position: absolute;
            left: 0.9rem;
            right: 0.9rem;
            bottom: 0.05rem;
            height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
            border-radius: 2px;
        }

        .custom-navbar .nav-link:hover {
            color: var(--primary);
        }

        .custom-navbar .nav-link:hover::after {
            transform: scaleX(1);
        }

        .custom-navbar .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .custom-navbar .nav-link.active::after {
            transform: scaleX(1);
        }

        .btn-nav-cta {
            padding: 0.5rem 1.4rem;
            min-height: 42px;
            font-size: 0.9rem;
            border-radius: 4px;
        }

        .custom-navbar .navbar-toggler {
            border: 1px solid var(--border-dark);
            border-radius: 6px;
            padding: 0.4rem 0.65rem;
        }

        .custom-navbar .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(200, 169, 106, 0.25);
        }

        @media (max-width: 991px) {
            .custom-navbar .navbar-collapse {
                background: var(--bg-white);
                border: 1px solid var(--border-color);
                border-radius: 10px;
                padding: 1rem;
                margin-top: 0.75rem;
                box-shadow: var(--shadow-card);
            }
            .custom-navbar .navbar-nav {
                gap: 0;
                margin: 0 0 0.6rem 0;
            }
            .custom-navbar .nav-link {
                padding: 0.65rem 0.75rem;
                border-radius: 6px;
            }
            .custom-navbar .nav-link::after {
                display: none;
            }
            .custom-navbar .nav-link.active {
                background: var(--primary-light);
            }
            .btn-nav-cta {
                width: 100%;
                margin-top: 0.4rem;
            }
        }

        /* ===== Page Hero (Category Header) ===== */
        .page-hero {
            position: relative;
            background: var(--bg-body);
            padding: clamp(3.2rem, 6vw, 5.5rem) 0 3.5rem;
            border-bottom: 2px solid var(--accent);
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }

        .page-hero .breadcrumb {
            font-size: 0.85rem;
            margin-bottom: 1.25rem;
            --bs-breadcrumb-divider: "/";
            color: var(--text-muted);
        }

        .page-hero .breadcrumb a {
            color: var(--text-muted);
        }

        .page-hero .breadcrumb a:hover {
            color: var(--primary);
        }

        .page-hero .breadcrumb .active {
            color: var(--text-main);
            font-weight: 600;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: 1px solid var(--accent);
            border-radius: 20px;
            padding: 0.3rem 0.9rem;
            font-size: 0.8rem;
            color: var(--primary);
            background: rgba(255, 255, 255, 0.7);
            margin-bottom: 1.2rem;
        }

        .hero-tag i {
            color: var(--accent);
            font-size: 0.7rem;
        }

        .page-hero h1 {
            margin-bottom: 1rem;
        }

        .page-hero .hero-desc {
            max-width: 540px;
            color: var(--text-body);
            font-size: 1rem;
            margin-bottom: 1.8rem;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-bottom: 1.2rem;
        }

        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 1.4rem;
            margin-top: 1.5rem;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .hero-trust i {
            color: var(--accent);
            font-size: 0.9rem;
        }

        .hero-visual {
            position: relative;
            border-radius: 14px;
            overflow: hidden;
            border: 1px solid var(--border-dark);
            box-shadow: var(--shadow-hover);
            background: var(--bg-white);
            aspect-ratio: 4 / 3;
        }

        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .hero-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 60, 52, 0.05) 0%, rgba(26, 60, 52, 0.25) 100%);
            pointer-events: none;
        }

        .hero-visual-badge {
            position: absolute;
            left: 1.2rem;
            bottom: 1.2rem;
            background: rgba(15, 42, 36, 0.85);
            color: var(--accent);
            border: 1px solid rgba(200, 169, 106, 0.4);
            padding: 0.4rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .hero-visual-badge i {
            font-size: 0.75rem;
        }

        @media (max-width: 991px) {
            .page-hero {
                padding-top: 2.5rem;
            }
            .hero-visual {
                margin-top: 1.5rem;
            }
        }

        /* ===== Steps Section ===== */
        .section-steps {
            background: var(--bg-body);
            padding: clamp(3.5rem, 7vw, 5.5rem) 0;
        }

        .step-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 1.8rem 1.6rem;
            height: 100%;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }

        .step-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--gold-gradient);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 169, 106, 0.45);
        }

        .step-card:hover::before {
            transform: scaleX(1);
        }

        .step-num {
            font-size: 2rem;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1px var(--accent);
            display: block;
            margin-bottom: 0.9rem;
            line-height: 1;
            font-family: "Barlow", "DIN Alternate", "Roboto", sans-serif;
        }

        .step-card h3 {
            margin-bottom: 0.5rem;
            font-size: 1.1rem;
        }

        .step-card p {
            margin-bottom: 0;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .step-icon {
            position: absolute;
            right: 1.2rem;
            top: 1.4rem;
            width: 44px;
            height: 44px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.05rem;
            transition: background 0.3s, color 0.3s;
        }

        .step-card:hover .step-icon {
            background: var(--primary);
            color: var(--accent);
        }

        /* ===== Feature Section ===== */
        .section-features {
            background: var(--bg-white);
            padding: clamp(3.5rem, 7vw, 5.5rem) 0;
        }

        .feature-card {
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 169, 106, 0.5);
        }

        .feature-card-large .feature-img {
            width: 100%;
            height: 100%;
            min-height: 260px;
            object-fit: cover;
            display: block;
        }

        .feature-content {
            padding: 2rem 1.75rem;
        }

        .feature-content .card-tag {
            display: inline-block;
            background: rgba(200, 169, 106, 0.15);
            color: var(--primary);
            border: 1px solid var(--accent);
            border-radius: 20px;
            padding: 0.25rem 0.85rem;
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 0.9rem;
        }

        .feature-content h3 {
            font-size: 1.25rem;
            margin-bottom: 0.6rem;
        }

        .feature-content p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
            line-height: 1.7;
        }

        .feature-card-sm {
            padding: 1.75rem;
            display: flex;
            flex-direction: column;
            height: 100%;
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            transition: all 0.3s ease;
        }

        .feature-card-sm:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 169, 106, 0.45);
        }

        .feature-card-sm .feature-icon {
            width: 58px;
            height: 58px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 1.1rem;
            border: 1px solid rgba(26, 60, 52, 0.08);
        }

        .feature-card-sm h3 {
            font-size: 1.05rem;
            margin-bottom: 0.45rem;
        }

        .feature-card-sm p {
            font-size: 0.87rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.65;
        }

        @media (max-width: 991px) {
            .feature-card-sm {
                margin-top: 1rem;
            }
        }

        /* ===== Guard (Dark Section) ===== */
        .section-guard {
            background: var(--bg-dark-section);
            padding: clamp(3.5rem, 7vw, 5.5rem) 0;
            position: relative;
            overflow: hidden;
        }

        .section-guard::before {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 300px;
            height: 300px;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.12;
            border-radius: 0 0 0 40px;
            pointer-events: none;
        }

        .section-guard .section-eyebrow {
            color: var(--accent);
        }

        .section-guard .section-eyebrow::before {
            background: var(--accent);
        }

        .section-guard h2 {
            color: #fff;
        }

        .section-guard p.lead {
            color: rgba(255, 255, 255, 0.6);
        }

        .guard-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            padding: 1.8rem 1.5rem;
            height: 100%;
            transition: all 0.3s ease;
        }

        .guard-item:hover {
            border-color: rgba(200, 169, 106, 0.35);
            background: rgba(255, 255, 255, 0.07);
            transform: translateY(-4px);
        }

        .guard-item i {
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 1rem;
            display: inline-block;
        }

        .guard-item h3 {
            color: #fff;
            font-size: 1.05rem;
            margin-bottom: 0.4rem;
        }

        .guard-item p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== FAQ Section ===== */
        .section-faq {
            background: var(--bg-body);
            padding: clamp(3.5rem, 7vw, 5.5rem) 0;
        }

        .faq-side {
            position: sticky;
            top: 110px;
        }

        .faq-side .faq-help {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 1.6rem;
            margin-top: 1.5rem;
            box-shadow: var(--shadow-card);
        }

        .faq-side .faq-help h4 {
            font-size: 1rem;
            margin-bottom: 0.5rem;
        }

        .faq-side .faq-help p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0.9rem;
        }

        .custom-accordion .accordion-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card) !important;
            margin-bottom: 1rem;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .custom-accordion .accordion-button {
            font-weight: 600;
            color: var(--text-main);
            background: var(--bg-white);
            padding: 1.3rem 1.5rem;
            font-size: 1rem;
            box-shadow: none;
            border: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .custom-accordion .accordion-button::after {
            background-image: none;
            content: "+";
            font-size: 1.4rem;
            font-weight: 400;
            color: var(--accent);
            width: auto;
            height: auto;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
        }

        .custom-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .custom-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--border-color);
        }

        .custom-accordion .accordion-button:not(.collapsed) {
            background: var(--bg-white);
            color: var(--primary);
        }

        .custom-accordion .accordion-body {
            padding: 0 1.5rem 1.4rem;
            color: var(--text-body);
            font-size: 0.92rem;
            line-height: 1.8;
            border-top: 1px solid var(--border-color);
            padding-top: 1rem;
        }

        /* ===== CTA Banner ===== */
        .section-cta {
            background: linear-gradient(135deg, var(--primary-dark), #0B201C), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            background-blend-mode: overlay;
            padding: clamp(3.5rem, 7vw, 5rem) 0;
            text-align: center;
            position: relative;
        }

        .section-cta::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(15, 42, 36, 0.6);
            pointer-events: none;
        }

        .section-cta h2 {
            color: #fff;
            font-size: clamp(1.4rem, 3vw, 2.2rem);
            margin-bottom: 0.8rem;
            position: relative;
            z-index: 1;
        }

        .section-cta p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 480px;
            margin: 0 auto 1.8rem;
            font-size: 0.95rem;
            position: relative;
            z-index: 1;
        }

        .section-cta .btn {
            position: relative;
            z-index: 1;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding-top: 3.5rem;
            border-top: 2px solid var(--accent);
        }

        .footer h5 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 1.2rem;
            font-weight: 600;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-weight: 700;
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 0.8rem;
        }

        .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(200, 169, 106, 0.4);
            color: var(--accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.8rem;
        }

        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 1.2rem;
            max-width: 300px;
        }

        .footer-social {
            display: flex;
            gap: 0.6rem;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: all 0.3s;
        }

        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            transform: translateY(-3px);
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 0.55rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: color 0.3s, padding-left 0.3s;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-contact li {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            margin-bottom: 0.65rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-contact i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 2.5rem;
            padding: 1.4rem 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.5rem;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Back to top ===== */
        .back-to-top {
            position: fixed;
            right: 1.5rem;
            bottom: 1.5rem;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            border: 1px solid var(--accent);
            background: var(--bg-white);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            z-index: 1030;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all 0.4s ease;
            box-shadow: var(--shadow-card);
        }

        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-to-top:hover {
            background: var(--primary);
            color: var(--accent);
            border-color: var(--primary);
        }

        /* ===== Scroll reveal ===== */
        .scroll-reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.5s ease, transform 0.5s ease;
        }

        .scroll-reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            .scroll-reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            * {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

        /* ===== Mobile refinements ===== */
        @media (max-width: 768px) {
            body {
                font-size: 0.9rem;
            }
            .section-padding {
                padding: 2.8rem 0;
            }
            .page-hero h1 {
                font-size: 1.65rem;
            }
            .step-num {
                font-size: 1.7rem;
            }
            .feature-card-large .feature-img {
                min-height: 200px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .hero-actions .btn {
                min-height: 44px;
            }
            .section-cta .btn {
                width: 100%;
                max-width: 280px;
            }
        }