/* roulang page: index */
:root {
            --primary: #2f4fc2;
            --primary-light: #5c85f2;
            --primary-dark: #1d2b63;
            --accent: #f59e0b;
            --bg-light: #f8fafc;
            --text-main: #1e293b;
            --text-weak: #64748b;
            --border-color: #e2e8f0;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-card: 0 4px 20px rgba(30, 40, 80, 0.06);
            --shadow-hover: 0 12px 32px rgba(30, 40, 80, 0.12);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            color: var(--text-main);
            background: #ffffff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
            outline: none;
        }

        .container-custom {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        ::selection {
            background: var(--primary);
            color: white;
        }

        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 50;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding-top: 0.85rem;
            padding-bottom: 0.85rem;
        }

        .logo-brand {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 0.4rem;
            line-height: 1.2;
            white-space: nowrap;
        }

        .logo-brand .logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1rem;
            box-shadow: 0 4px 12px rgba(47, 79, 194, 0.28);
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .nav-main a {
            padding: 0.45rem 0.9rem;
            border-radius: 999px;
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--text-weak);
        }

        .nav-main a:hover {
            background: rgba(47, 79, 194, 0.06);
            color: var(--primary);
        }

        .nav-main a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(47, 79, 194, 0.25);
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 999px;
            padding: 0.35rem 0.35rem 0.35rem 1rem;
            width: 260px;
            transition: var(--transition);
        }

        .nav-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(92, 133, 242, 0.15);
        }

        .nav-search input {
            border: none;
            background: transparent;
            width: 100%;
            font-size: 0.9rem;
            color: var(--text-main);
        }

        .nav-search button {
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 999px;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-search button:hover {
            background: var(--primary-dark);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            width: 40px;
            height: 40px;
            font-size: 1.1rem;
            color: var(--text-main);
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        .mobile-nav {
            display: none;
            flex-direction: column;
            padding: 1rem 1.5rem 1.5rem;
            background: white;
            border-bottom: 1px solid var(--border-color);
            gap: 0.5rem;
        }

        .mobile-nav.open {
            display: flex;
        }

        .mobile-nav a {
            padding: 0.6rem 1rem;
            border-radius: 10px;
            font-weight: 500;
            color: var(--text-main);
            background: var(--bg-light);
        }

        .mobile-nav a.active {
            background: var(--primary);
            color: white;
        }

        .hero-section {
            position: relative;
            background: linear-gradient(135deg, rgba(29, 43, 99, 0.92) 0%, rgba(47, 79, 194, 0.82) 100%), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 6rem 0 5.5rem;
            color: white;
            overflow: hidden;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            background: rgba(255, 255, 255, 0.14);
            backdrop-filter: blur(4px);
            border-radius: 999px;
            padding: 0.4rem 1.1rem;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .hero-title {
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-top: 1.2rem;
            margin-bottom: 1rem;
        }

        .hero-subtitle {
            font-size: 1.08rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }

        .hero-search-wrap {
            background: white;
            border-radius: 999px;
            padding: 0.4rem;
            display: flex;
            align-items: center;
            max-width: 520px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
        }

        .hero-search-wrap i {
            color: var(--text-weak);
            padding-left: 1rem;
        }

        .hero-search-wrap input {
            border: none;
            background: transparent;
            flex: 1;
            padding: 0.55rem 0.5rem;
            font-size: 0.95rem;
            color: var(--text-main);
            min-width: 0;
        }

        .hero-search-wrap button {
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 999px;
            padding: 0.6rem 1.5rem;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            white-space: nowrap;
            transition: var(--transition);
        }

        .hero-search-wrap button:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 1.6rem;
        }

        .hero-tags a {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: rgba(255, 255, 255, 0.9);
            padding: 0.3rem 0.9rem;
            border-radius: 999px;
            font-size: 0.82rem;
        }

        .hero-tags a:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        .section-padding {
            padding: 5rem 0;
        }

        .section-label {
            display: inline-block;
            background: rgba(47, 79, 194, 0.08);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            padding: 0.3rem 0.9rem;
            border-radius: 999px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.3rem);
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            letter-spacing: -0.02em;
        }

        .section-desc {
            color: var(--text-weak);
            max-width: 640px;
            font-size: 1.02rem;
        }

        .feature-card {
            background: white;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            padding: 1.8rem;
            transition: var(--transition);
            height: 100%;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(47, 79, 194, 0.2);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }

        .category-card {
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            overflow: hidden;
            background: white;
            transition: var(--transition);
            height: 100%;
        }

        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .category-card .card-cover {
            height: 150px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .category-card .card-body {
            padding: 1.4rem 1.5rem 1.6rem;
        }

        .badge {
            display: inline-block;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .stat-item {
            text-align: center;
            padding: 1.8rem 1rem;
        }

        .stat-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-item .label {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-top: 0.3rem;
        }

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

        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .content-card .content-body {
            padding: 1.3rem 1.4rem 1.5rem;
            flex: 1;
        }

        .content-card .content-cover {
            height: 160px;
            background-size: cover;
            background-position: center;
        }

        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 1.3rem 1.5rem;
            background: white;
            transition: var(--transition);
        }

        .faq-item + .faq-item {
            margin-top: 0.8rem;
        }

        .faq-item details {
            width: 100%;
        }

        .faq-item summary {
            cursor: pointer;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 0.6rem;
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::before {
            content: "\f059";
            font-family: "Font Awesome 6 Free";
            font-weight: 400;
            color: var(--primary);
            font-size: 1rem;
        }

        .faq-item p {
            color: var(--text-weak);
            padding-left: 1.6rem;
            margin-top: 0.6rem;
            font-size: 0.95rem;
        }

        .cta-section {
            background: linear-gradient(120deg, #1d2b63 0%, #2f4fc2 100%);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            right: -40px;
            top: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
        }

        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 2rem;
            margin-top: 5rem;
        }

        .footer-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: white;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .footer-links h5 {
            color: white;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
        }

        .footer-links a {
            display: block;
            padding: 0.3rem 0;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
        }

        .footer-links a:hover {
            color: white;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            font-size: 0.82rem;
            text-align: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(47, 79, 194, 0.22);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(47, 79, 194, 0.3);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            padding: 0.7rem 1.6rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-outline:hover {
            background: rgba(47, 79, 194, 0.06);
            transform: translateY(-2px);
        }

        .flow-step {
            text-align: center;
            padding: 1.5rem;
            position: relative;
        }

        .flow-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: white;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            box-shadow: 0 8px 20px rgba(47, 79, 194, 0.25);
        }

        @media (max-width: 1024px) {
            .nav-main {
                display: none;
            }

            .mobile-menu-btn {
                display: inline-flex;
            }

            .nav-search {
                width: 180px;
            }

            .header-inner {
                flex-wrap: wrap;
            }
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 4.5rem 0 4rem;
            }

            .section-padding {
                padding: 3.5rem 0;
            }

            .cta-section {
                padding: 2.5rem 1.5rem;
            }

            .hero-search-wrap {
                flex-wrap: wrap;
                border-radius: 20px;
            }

            .hero-search-wrap input {
                flex: 1 1 100%;
                padding: 0.6rem 0.5rem;
            }

            .hero-search-wrap button {
                width: 100%;
                margin-top: 0.4rem;
            }

            .nav-search {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .logo-brand {
                font-size: 1.05rem;
            }

            .header-inner {
                padding-top: 0.6rem;
                padding-bottom: 0.6rem;
            }

            .container-custom {
                padding-left: 1.2rem;
                padding-right: 1.2rem;
            }

            .hero-title {
                font-size: 1.7rem;
            }

            .stat-item .num {
                font-size: 1.7rem;
            }

            .mobile-menu-btn {
                width: 38px;
                height: 38px;
            }
        }

/* roulang page: article */
:root {
    --brand: #3d66e8;
    --brand-dark: #2c4fd8;
    --brand-light: #eef4ff;
    --ink: #0f172a;
    --text: #334155;
    --muted: #64748b;
    --bg: #f8fafc;
    --surface: #ffffff;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 1px 2px rgba(15, 23, 42, .04);
    --shadow: 0 4px 20px rgba(15, 23, 42, .07);
    --shadow-lg: 0 16px 40px rgba(15, 23, 42, .12);
    --nav-h: 76px;
}
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
}
button,
input,
textarea {
    font-family: inherit;
    font-size: inherit;
}
.container-custom {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(226, 232, 240, .8);
    box-shadow: 0 1px 8px rgba(15, 23, 42, .04);
}
.header-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    min-height: var(--nav-h);
    padding-top: 8px;
    padding-bottom: 8px;
}
.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, #3d66e8, #7c5cfc);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 17px;
    box-shadow: 0 4px 12px rgba(61, 102, 232, .3);
}
.logo-text {
    font-size: 17px;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: .3px;
    white-space: nowrap;
}
.nav-main {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-main a {
    padding: 8px 16px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--muted);
    transition: all .25s ease;
    white-space: nowrap;
}
.nav-main a:hover {
    background: var(--brand-light);
    color: var(--brand);
}
.nav-main a.active {
    background: var(--brand);
    color: #fff;
    box-shadow: 0 4px 12px rgba(61, 102, 232, .25);
}
.nav-search {
    flex: 1;
    min-width: 180px;
    max-width: 440px;
    margin-left: auto;
}
.search-form {
    display: flex;
    align-items: center;
    background: #f1f5f9;
    border: 1px solid transparent;
    border-radius: 12px;
    padding: 0 6px 0 14px;
    transition: all .3s ease;
}
.search-form:focus-within {
    background: #fff;
    border-color: var(--brand);
    box-shadow: 0 0 0 4px rgba(61, 102, 232, .1);
}
.search-form .search-icon {
    color: var(--muted);
    font-size: 14px;
}
.search-form input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    padding: 10px 10px;
    font-size: 14px;
    color: var(--ink);
}
.search-form input::placeholder {
    color: #94a3b8;
}
.search-submit {
    background: var(--brand);
    color: #fff;
    border: none;
    border-radius: 9px;
    padding: 7px 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all .25s ease;
}
.search-submit:hover {
    background: var(--brand-dark);
    box-shadow: 0 4px 12px rgba(61, 102, 232, .3);
}
.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--brand-light);
    border: none;
    color: var(--brand);
    font-size: 18px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all .25s ease;
}
.nav-toggle:hover {
    background: #e0e7ff;
}
.content-wrapper {
    padding: 40px 0 64px;
}
.article-hero {
    position: relative;
    padding: 72px 0 64px;
    background-size: cover;
    background-position: center;
    color: #fff;
    overflow: hidden;
}
.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, .88) 0%, rgba(30, 41, 82, .78) 50%, rgba(61, 102, 232, .72) 100%);
}
.article-hero .hero-content {
    position: relative;
    z-index: 2;
    max-width: 860px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, .7);
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.breadcrumb a {
    color: rgba(255, 255, 255, .85);
    transition: color .25s;
}
.breadcrumb a:hover {
    color: #93b2fc;
}
.breadcrumb i {
    font-size: 11px;
    color: rgba(255, 255, 255, .5);
}
.article-hero h1 {
    font-size: clamp(26px, 4vw, 38px);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 18px;
    letter-spacing: -.5px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, .25);
}
.hero-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 8px;
}
.hero-meta .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 13px;
    color: rgba(255, 255, 255, .85);
    background: rgba(255, 255, 255, .12);
    backdrop-filter: blur(8px);
    padding: 6px 14px;
    border-radius: 20px;
}
.hero-meta .meta-item i {
    font-size: 12px;
}
.hero-meta .category-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, #3d66e8, #7c5cfc);
    padding: 6px 16px;
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(61, 102, 232, .35);
}
.article-body-section {
    background: var(--surface);
    padding: 48px 0 40px;
    margin-top: -24px;
    border-radius: 24px 24px 0 0;
    position: relative;
    z-index: 3;
}
.article-layout {
    max-width: 860px;
    margin: 0 auto;
}
.article-cover {
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 36px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(226, 232, 240, .5);
}
.article-cover img {
    width: 100%;
    height: auto;
    aspect-ratio: 16/8;
    object-fit: cover;
}
.article-content {
    font-size: 16.5px;
    line-height: 1.9;
    color: #334155;
}
.article-content p {
    margin-bottom: 1.4em;
}
.article-content h2 {
    font-size: 24px;
    font-weight: 700;
    color: #0f172a;
    margin: 2em 0 .8em;
    padding-bottom: .5em;
    border-bottom: 2px solid #eef2f7;
    letter-spacing: -.3px;
}
.article-content h3 {
    font-size: 19px;
    font-weight: 700;
    color: #0f172a;
    margin: 1.8em 0 .6em;
}
.article-content h4 {
    font-size: 16px;
    font-weight: 700;
    color: #1e293b;
    margin: 1.5em 0 .5em;
}
.article-content ul,
.article-content ol {
    margin: 0 0 1.4em 1.5em;
}
.article-content li {
    margin-bottom: .5em;
}
.article-content a {
    color: #3d66e8;
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: rgba(61, 102, 232, .3);
    transition: text-decoration-color .25s;
}
.article-content a:hover {
    text-decoration-color: #3d66e8;
}
.article-content img {
    border-radius: 16px;
    margin: 1.5em 0;
    box-shadow: var(--shadow);
}
.article-content blockquote {
    border-left: 4px solid #3d66e8;
    background: #f8fafc;
    padding: 1em 1.5em;
    border-radius: 0 14px 14px 0;
    margin: 1.5em 0;
    color: #475569;
    font-style: normal;
}
.article-content blockquote p {
    margin-bottom: .3em;
}
.article-content code {
    background: #f1f5f9;
    padding: 2px 7px;
    border-radius: 6px;
    font-size: .88em;
    color: #be185d;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 15px;
}
.article-content th {
    background: #f8fafc;
    font-weight: 600;
    color: #0f172a;
    padding: 12px 14px;
    text-align: left;
    border: 1px solid #e2e8f0;
}
.article-content td {
    padding: 11px 14px;
    border: 1px solid #e2e8f0;
}
.article-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid #eef2f7;
}
.article-tags .tag-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--muted);
    margin-right: 4px;
}
.tag-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    color: #475569;
    cursor: pointer;
    transition: all .25s ease;
}
.tag-item:hover {
    background: var(--brand-light);
    border-color: #c7ddfe;
    color: var(--brand);
    transform: translateY(-1px);
}
.article-share {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 28px;
    padding: 20px 24px;
    background: #f8fafc;
    border-radius: 16px;
    flex-wrap: wrap;
}
.article-share span {
    font-size: 14px;
    font-weight: 600;
    color: var(--muted);
    margin-right: 4px;
}
.share-btn {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: none;
    background: #fff;
    color: #64748b;
    font-size: 15px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all .25s ease;
    box-shadow: var(--shadow-sm);
}
.share-btn:hover {
    background: var(--brand);
    color: #fff;
    box-shadow: 0 4px 12px rgba(61, 102, 232, .3);
    transform: translateY(-2px);
}
.author-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--surface);
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 20px 24px;
    margin-top: 32px;
    box-shadow: var(--shadow-sm);
}
.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, #3d66e8, #7c5cfc);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    flex-shrink: 0;
}
.author-info .author-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 2px;
}
.author-info .author-desc {
    font-size: 13px;
    color: var(--muted);
}
.related-section {
    padding: 72px 0 64px;
    background: var(--bg);
}
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 36px;
}
.section-head h2 {
    font-size: clamp(22px, 3vw, 28px);
    font-weight: 800;
    color: var(--ink);
    letter-spacing: -.4px;
}
.section-head .sub-line {
    font-size: 14px;
    color: var(--muted);
    margin-top: 4px;
}
.section-head .section-more {
    font-size: 14px;
    font-weight: 500;
    color: var(--brand);
    white-space: nowrap;
    transition: color .25s;
}
.section-head .section-more:hover {
    color: var(--brand-dark);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--surface);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid #e2e8f0;
    box-shadow: var(--shadow-sm);
    transition: all .35s cubic-bezier(.4, 0, .2, 1);
    display: flex;
    flex-direction: column;
}
.related-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
    border-color: #c7ddfe;
}
.related-cover {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
}
.related-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.related-card:hover .related-cover img {
    transform: scale(1.05);
}
.related-category-badge {
    position: absolute;
    left: 12px;
    bottom: 12px;
    background: rgba(15, 23, 42, .6);
    backdrop-filter: blur(8px);
    color: #fff;
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 20px;
    z-index: 2;
}
.related-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.related-body h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--ink);
    line-height: 1.45;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color .25s;
}
.related-card:hover .related-body h3 {
    color: var(--brand);
}
.related-body p {
    font-size: 13.5px;
    color: var(--muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
    flex: 1;
}
.related-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 12px;
    color: #94a3b8;
    border-top: 1px solid #f1f5f9;
    padding-top: 12px;
}
.related-meta span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.discussion-section {
    padding: 72px 0;
    background: var(--surface);
}
.discussion-wrap {
    max-width: 860px;
    margin: 0 auto;
}
.comment-list {
    margin-bottom: 32px;
}
.comment-item {
    display: flex;
    gap: 14px;
    padding: 20px 0;
    border-bottom: 1px solid #f1f5f9;
}
.comment-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}
.comment-content {
    flex: 1;
}
.comment-author {
    font-size: 14px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 4px;
}
.comment-text {
    font-size: 14.5px;
    color: var(--text);
    line-height: 1.7;
    margin-bottom: 6px;
}
.comment-meta {
    font-size: 12px;
    color: #94a3b8;
    display: flex;
    gap: 12px;
}
.comment-meta .reply-btn {
    color: var(--brand);
    cursor: pointer;
    font-weight: 500;
    transition: color .25s;
    background: none;
    border: none;
}
.comment-meta .reply-btn:hover {
    color: var(--brand-dark);
}
.comment-form {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 28px;
    margin-top: 24px;
}
.comment-form h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 16px;
}
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 14px;
}
.form-grid input {
    width: 100%;
    padding: 11px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    background: #fff;
    font-size: 14px;
    outline: none;
    transition: border-color .25s, box-shadow .25s;
    color: var(--ink);
}
.form-grid input:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 4px rgba(61, 102, 232, .08);
}
.comment-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    background: #fff;
    font-size: 14px;
    resize: vertical;
    min-height: 110px;
    outline: none;
    transition: border-color .25s, box-shadow .25s;
    color: var(--ink);
    margin-bottom: 14px;
}
.comment-form textarea:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 4px rgba(61, 102, 232, .08);
}
.faq-section {
    padding: 72px 0;
    background: var(--bg);
}
.faq-grid {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.faq-item {
    background: var(--surface);
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    overflow: hidden;
    transition: box-shadow .3s ease, border-color .3s ease;
}
.faq-item:hover {
    border-color: #c7ddfe;
    box-shadow: var(--shadow);
}
.faq-item summary {
    padding: 20px 24px;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
    padding-right: 52px;
    transition: color .25s;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary::after {
    content: '\f067';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: 22px;
    font-size: 14px;
    color: var(--brand);
    transition: transform .3s ease;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--brand-light);
    border-radius: 50%;
}
.faq-item[open] summary::after {
    transform: rotate(45deg);
    background: var(--brand);
    color: #fff;
}
.faq-item[open] {
    border-color: #c7ddfe;
    box-shadow: var(--shadow);
}
.faq-item .faq-body {
    padding: 0 24px 22px;
    font-size: 14.5px;
    color: var(--muted);
    line-height: 1.75;
    border-top: 1px solid #f1f5f9;
    margin-top: 0;
    padding-top: 14px;
}
.faq-item .faq-body p {
    margin-bottom: 8px;
}
.cta-section {
    padding: 72px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #22317a 100%);
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(61, 102, 232, .2), transparent 60%);
    border-radius: 50%;
}
.cta-content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 640px;
    margin: 0 auto;
}
.cta-content h2 {
    font-size: clamp(24px, 3.5vw, 32px);
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: -.4px;
}
.cta-content p {
    font-size: 15px;
    color: rgba(255, 255, 255, .7);
    line-height: 1.7;
    margin-bottom: 28px;
}
.cta-buttons {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all .3s ease;
}
.btn-primary {
    background: var(--brand);
    color: #fff;
    box-shadow: 0 4px 16px rgba(61, 102, 232, .4);
}
.btn-primary:hover {
    background: var(--brand-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(61, 102, 232, .45);
}
.btn-ghost {
    background: rgba(255, 255, 255, .1);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .2);
    backdrop-filter: blur(8px);
}
.btn-ghost:hover {
    background: rgba(255, 255, 255, .18);
    transform: translateY(-2px);
}
.not-found-wrap {
    padding: 80px 24px;
    text-align: center;
    max-width: 560px;
    margin: 0 auto;
}
.not-found-wrap .nf-icon {
    width: 80px;
    height: 80px;
    border-radius: 24px;
    background: var(--brand-light);
    color: var(--brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 24px;
}
.not-found-wrap h2 {
    font-size: 24px;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: 12px;
}
.not-found-wrap p {
    font-size: 15px;
    color: var(--muted);
    margin-bottom: 24px;
}
.site-footer {
    background: #0f172a;
    color: rgba(255, 255, 255, .6);
    padding: 56px 0 32px;
    font-size: 14px;
}
.site-footer a {
    color: rgba(255, 255, 255, .6);
    transition: color .25s;
}
.site-footer a:hover {
    color: #93b2fc;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-links h5 {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
    letter-spacing: .3px;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding-top: 24px;
    margin-top: 40px;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, .4);
}
@media (max-width: 1024px) {
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .nav-main {
        display: none;
        position: absolute;
        top: calc(var(--nav-h) + 8px);
        left: 16px;
        right: 16px;
        background: #fff;
        border-radius: 16px;
        box-shadow: var(--shadow-lg);
        padding: 12px;
        flex-direction: column;
        gap: 4px;
        border: 1px solid var(--border);
    }
    .nav-main.open {
        display: flex;
    }
    .nav-main a {
        width: 100%;
        text-align: center;
        padding: 12px 16px;
    }
    .nav-toggle {
        display: flex;
        margin-left: auto;
    }
    .nav-search {
        order: 3;
        flex-basis: 100%;
        max-width: none;
    }
    .header-inner {
        gap: 10px;
    }
    .logo-text {
        font-size: 15px;
    }
    .article-hero {
        padding: 52px 0 56px;
    }
    .article-hero h1 {
        font-size: 24px;
        line-height: 1.35;
    }
    .hero-meta {
        gap: 8px;
    }
    .hero-meta .meta-item {
        padding: 5px 10px;
        font-size: 12px;
    }
    .article-body-section {
        padding: 32px 0 28px;
    }
    .article-content {
        font-size: 15.5px;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
    .faq-item summary {
        padding: 16px 16px 16px 20px;
        padding-right: 48px;
        font-size: 14px;
    }
    .faq-item .faq-body {
        padding: 0 20px 18px;
        font-size: 14px;
    }
}
@media (max-width: 520px) {
    .container-custom {
        padding: 0 16px;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .site-logo .logo-text {
        font-size: 14px;
        max-width: 200px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .search-submit {
        padding: 7px 12px;
        font-size: 12px;
    }
    .article-hero h1 {
        font-size: 21px;
    }
    .article-share {
        padding: 14px 16px;
    }
    .comment-form {
        padding: 20px;
    }
    .cta-buttons .btn {
        width: 100%;
        justify-content: center;
    }
}

/* roulang page: category1 */
:root {
  --brand: #f59e0b;
  --brand-dark: #d97706;
  --brand-light: #fbd38d;
  --brand-bg: #fffbeb;
  --dark: #0f172a;
  --dark-soft: #1e293b;
  --text: #1e293b;
  --text-muted: #64748b;
  --bg: #f8fafc;
  --card: #ffffff;
  --border: #e2e8f0;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
  --shadow: 0 10px 30px rgba(15, 23, 42, .08);
  --shadow-lg: 0 20px 45px rgba(15, 23, 42, .14);
  --transition: all .3s ease;
  --header-h: 76px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; height: auto; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button { cursor: pointer; background: none; border: none; font-family: inherit; }
input { font-family: inherit; }
.container-custom { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, .95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, .25);
}
.header-wrapper {
  display: flex;
  align-items: center;
  gap: 20px;
  height: var(--header-h);
  position: relative;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  white-space: nowrap;
  letter-spacing: .5px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  flex-shrink: 0;
}
.header-search {
  flex: 1;
  max-width: 460px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 999px;
  padding: 8px 18px;
  gap: 10px;
  color: #94a3b8;
  transition: var(--transition);
}
.header-search:focus-within {
  background: rgba(255, 255, 255, .16);
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, .2);
}
.header-search input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: #f1f5f9;
  font-size: 14px;
}
.header-search input::placeholder { color: #94a3b8; }
.nav-main {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.nav-main a {
  display: block;
  padding: 8px 16px;
  border-radius: 999px;
  color: #cbd5e1;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}
.nav-main a:hover { color: #fff; background: rgba(255, 255, 255, .08); }
.nav-main a.active {
  color: var(--dark);
  background: var(--brand);
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(245, 158, 11, .35);
}
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .1);
  color: #fff;
  font-size: 18px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ===== Hero Banner ===== */
.category-banner {
  position: relative;
  padding: 80px 0;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}
.category-banner .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(15, 23, 42, .92) 0%, rgba(15, 23, 42, .72) 70%, rgba(245, 158, 11, .15) 100%);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #94a3b8;
}
.breadcrumb a { color: #cbd5e1; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb span:last-child { color: var(--brand-light); }

/* ===== Section ===== */
.section-block { padding: 72px 0; }
.section-header { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--brand-bg);
  border: 1px solid rgba(245, 158, 11, .25);
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.section-title { font-size: 32px; font-weight: 800; color: var(--dark); line-height: 1.3; margin-top: 12px; }
.section-subtitle { margin-top: 12px; color: var(--text-muted); font-size: 16px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-brand { background: var(--brand); color: var(--dark); box-shadow: 0 4px 14px rgba(245, 158, 11, .35); }
.btn-brand:hover { background: var(--brand-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 22px rgba(245, 158, 11, .45); }
.btn-outline { border-color: rgba(255, 255, 255, .35); color: #fff; }
.btn-outline:hover { border-color: var(--brand); color: var(--brand); background: rgba(245, 158, 11, .1); }
.btn-white { background: #fff; color: var(--dark); }
.btn-white:hover { background: var(--brand-light); transform: translateY(-2px); box-shadow: var(--shadow); }

/* ===== Cards ===== */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(245, 158, 11, .4); }
.card-img { position: relative; overflow: hidden; aspect-ratio: 16 / 10; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.card:hover .card-img img { transform: scale(1.05); }
.card-img .badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 23, 42, .8);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}
.card-body { padding: 22px; }
.card-title { font-size: 18px; font-weight: 700; color: var(--dark); }
.card-title:hover { color: var(--brand-dark); }
.card-text { margin-top: 8px; font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.card-link {
  margin-top: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-dark);
}
.card-link:hover { gap: 10px; }

/* ===== Steps ===== */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  transition: var(--transition);
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.step-num {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 6px 18px rgba(245, 158, 11, .35);
}
.step-card h3 { font-size: 17px; font-weight: 700; color: var(--dark); }
.step-card p { margin-top: 8px; font-size: 14px; color: var(--text-muted); }

/* ===== Data ===== */
.data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.data-item {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  transition: var(--transition);
}
.data-item:hover { background: rgba(255, 255, 255, .1); border-color: rgba(245, 158, 11, .4); transform: translateY(-4px); }
.data-num { font-size: 40px; font-weight: 800; color: var(--brand); line-height: 1.2; }
.data-label { margin-top: 8px; font-size: 14px; color: #cbd5e1; }

/* ===== Tips ===== */
.tips-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.tip-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: var(--transition);
}
.tip-item:hover { box-shadow: var(--shadow); border-color: rgba(245, 158, 11, .3); }
.tip-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--brand-bg);
  color: var(--brand-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}
.tip-item h4 { font-size: 15px; font-weight: 700; color: var(--dark); }
.tip-item p { margin-top: 4px; font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== FAQ ===== */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  padding: 22px 26px;
  transition: var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow); border-color: rgba(245, 158, 11, .3); }
.faq-q {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
}
.faq-toggle {
  margin-left: auto;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--brand-bg);
  color: var(--brand-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.active .faq-toggle { transform: rotate(45deg); }
.faq-a { margin-top: 12px; font-size: 14px; color: var(--text-muted); line-height: 1.8; }

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: var(--dark);
  overflow: hidden;
}
.cta-inner { max-width: 760px; margin: 0 auto; text-align: center; color: #fff; }
.cta-inner h2 { font-size: 32px; font-weight: 800; }
.cta-inner p { margin-top: 14px; color: #cbd5e1; }
.cta-actions { display: flex; justify-content: center; gap: 16px; margin-top: 32px; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: var(--dark); color: #94a3b8; padding: 64px 0 24px; }
.footer-brand { display: flex; align-items: center; gap: 12px; font-size: 18px; font-weight: 700; color: #fff; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links h5 { font-size: 15px; font-weight: 600; color: #e2e8f0; margin-bottom: 8px; }
.footer-links a { font-size: 14px; color: #94a3b8; transition: var(--transition); }
.footer-links a:hover { color: var(--brand); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: #64748b;
}
.text-brand-300 { color: #fcd34d; }
.brand-300 { color: #fcd34d; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .tips-list { grid-template-columns: 1fr; }
  .header-search { max-width: 260px; }
}
@media (max-width: 768px) {
  :root { --header-h: 64px; }
  .nav-main {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--dark);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    flex-direction: column;
    padding: 16px 24px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
  }
  .nav-main.open { display: flex; }
  .nav-main a { width: 100%; text-align: left; padding: 12px 16px; }
  .menu-toggle { display: inline-flex; }
  .header-search { display: none; }
  .section-block { padding: 52px 0; }
  .section-title { font-size: 26px; }
  .category-banner { padding: 56px 0; }
  .data-num { font-size: 32px; }
  .cta-inner h2 { font-size: 26px; }
}
@media (max-width: 520px) {
  .container-custom { padding: 0 18px; }
  .steps-grid { grid-template-columns: 1fr; }
  .data-grid { grid-template-columns: 1fr; }
  .tips-list { grid-template-columns: 1fr; }
  .section-title { font-size: 22px; }
  .header-wrapper { gap: 12px; }
  .logo { font-size: 14px; }
  .logo-icon { width: 34px; height: 34px; }
  .cta-actions .btn { width: 100%; justify-content: center; }
}