/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --brand-primary: #0A8F5C;
            --brand-primary-dark: #067046;
            --brand-primary-light: #E8F7F0;
            --brand-accent: #FFB800;
            --brand-accent-light: #FFF6E0;
            --bg-light: #F6F9F8;
            --bg-white: #FFFFFF;
            --bg-dark: #0C1E18;
            --text-main: #132A21;
            --text-body: #3D544A;
            --text-muted: #6B8176;
            --border-color: #E1EBE5;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(12, 30, 24, 0.06);
            --shadow-md: 0 8px 30px rgba(12, 30, 24, 0.08);
            --shadow-lg: 0 20px 50px rgba(12, 30, 24, 0.12);
            --transition-base: all 0.3s ease;
        }
        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 12px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
        }
        p {
            margin: 0 0 16px;
        }
        .container {
            max-width: 1200px;
        }
        /* ========== Toolbar ========== */
        .top-toolbar {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.78);
            font-size: 13px;
            letter-spacing: 0.3px;
            padding: 8px 0;
        }
        .top-toolbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .top-toolbar a {
            color: rgba(255, 255, 255, 0.78);
        }
        .top-toolbar a:hover {
            color: #fff;
        }
        .toolbar-left span {
            margin-right: 20px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .toolbar-right a {
            margin-left: 18px;
        }
        @media (max-width: 767px) {
            .toolbar-left span:nth-child(2) {
                display: none;
            }
            .toolbar-right a:first-child {
                display: none;
            }
        }
        /* ========== Header / Nav ========== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04), 0 4px 20px rgba(0, 0, 0, 0.03);
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 0;
        }
        .navbar-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--brand-primary) 0%, #16b87e 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
        }
        .navbar-brand .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }
        .navbar-brand .brand-text span {
            color: var(--brand-primary);
        }
        .navbar-nav .nav-link {
            padding: 10px 18px;
            color: var(--text-body);
            font-weight: 500;
            border-radius: 8px;
            transition: var(--transition-base);
            position: relative;
        }
        .navbar-nav .nav-link:hover {
            color: var(--brand-primary);
            background: var(--brand-primary-light);
        }
        .navbar-nav .nav-link.active {
            color: var(--brand-primary);
            font-weight: 600;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 2px;
            height: 3px;
            background: var(--brand-primary);
            border-radius: 4px;
        }
        .navbar-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--brand-primary);
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: 10px;
            font-weight: 500;
            box-shadow: 0 4px 14px rgba(10, 143, 92, 0.3);
            transition: all 0.3s ease;
        }
        .navbar-cta:hover {
            background: var(--brand-primary-dark);
            color: #fff !important;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(10, 143, 92, 0.35);
        }
        .navbar-toggler {
            border: none;
            font-size: 22px;
            color: var(--text-main);
            padding: 6px 10px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        @media (max-width: 991px) {
            .navbar-nav {
                padding: 16px 0;
            }
            .navbar-nav .nav-link {
                padding: 12px 16px;
            }
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .navbar-cta {
                margin-top: 12px;
                display: inline-flex;
                width: fit-content;
            }
        }
        /* ========== Hero ========== */
        .hero-section {
            position: relative;
            padding: 100px 0 120px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-color: var(--bg-dark);
            color: #fff;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(100deg, rgba(12, 30, 24, 0.92) 0%, rgba(12, 30, 24, 0.72) 45%, rgba(12, 30, 24, 0.35) 100%);
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 30px;
            padding: 6px 18px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(4px);
            margin-bottom: 20px;
        }
        .hero-section h1 {
            color: #fff;
            font-size: 3.2rem;
            line-height: 1.2;
            margin-bottom: 20px;
            max-width: 740px;
        }
        .hero-section h1 span {
            color: var(--brand-accent);
            position: relative;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 640px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .hero-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--brand-accent);
            color: #132A21 !important;
            font-weight: 600;
            padding: 14px 34px;
            border-radius: 12px;
            border: none;
            transition: all 0.3s ease;
            box-shadow: 0 8px 24px rgba(255, 184, 0, 0.3);
        }
        .hero-btn-primary:hover {
            background: #FFCA3A;
            color: #132A21 !important;
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(255, 184, 0, 0.4);
        }
        .hero-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff !important;
            padding: 14px 34px;
            border-radius: 12px;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .hero-btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.8);
        }
        .hero-metrics {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 10px;
        }
        .hero-metrics .metric-item {
            display: flex;
            flex-direction: column;
        }
        .hero-metrics .metric-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
        }
        .hero-metrics .metric-num span {
            color: var(--brand-accent);
        }
        .hero-metrics .metric-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 70px 0 80px;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
            .hero-metrics {
                gap: 20px;
            }
            .hero-metrics .metric-num {
                font-size: 1.7rem;
            }
        }
        /* ========== Section padding ========== */
        .section {
            padding: 80px 0;
        }
        .section-sm {
            padding: 50px 0;
        }
        .section-heading {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 50px;
        }
        .section-heading .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--brand-primary);
            font-size: 14px;
            font-weight: 600;
            background: var(--brand-primary-light);
            padding: 5px 16px;
            border-radius: 30px;
            margin-bottom: 14px;
        }
        .section-heading h2 {
            font-size: 2.3rem;
            margin-bottom: 14px;
        }
        .section-heading p {
            color: var(--text-muted);
            font-size: 1.05rem;
        }
        /* ========== Features / 核心说明 ========== */
        .features-grid .card {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            transition: var(--transition-base);
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
        }
        .features-grid .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(10, 143, 92, 0.25);
        }
        .features-grid .card-body {
            padding: 32px 28px;
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            background: var(--brand-primary-light);
            color: var(--brand-primary);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
        }
        .features-grid .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .features-grid .card-text {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        /* ========== Categories / 分类入口 ========== */
        .cat-section {
            background: var(--bg-light);
        }
        .cat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            height: 100%;
            border: 1px solid var(--border-color);
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .cat-card .cat-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .cat-card .cat-img::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to top, rgba(12, 30, 24, 0.3) 0%, transparent 60%);
        }
        .cat-card .cat-body {
            padding: 24px;
        }
        .cat-card .cat-body h3 {
            font-size: 1.3rem;
            margin-bottom: 8px;
        }
        .cat-card .cat-body p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
        .cat-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }
        .cat-tag {
            background: var(--brand-primary-light);
            color: var(--brand-primary);
            font-size: 13px;
            padding: 2px 10px;
            border-radius: 6px;
            font-weight: 500;
        }
        .cat-link {
            color: var(--brand-primary);
            font-weight: 600;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .cat-link:hover {
            color: var(--brand-primary-dark);
            gap: 10px;
        }
        /* ========== Content List / 资讯列表 ========== */
        .content-section {
            background: var(--bg-white);
        }
        .content-list-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-base);
            height: 100%;
            box-shadow: var(--shadow-sm);
        }
        .content-list-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .content-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .content-meta .badge-primary {
            background: var(--brand-primary-light);
            color: var(--brand-primary);
            font-weight: 600;
            padding: 4px 10px;
        }
        .content-list-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .content-list-card h3 a:hover {
            color: var(--brand-primary);
        }
        .content-list-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 12px;
        }
        .content-date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .load-more-wrap {
            text-align: center;
            margin-top: 40px;
        }
        .btn-more {
            border: 1.5px solid var(--border-color);
            background: var(--bg-white);
            color: var(--text-body);
            padding: 10px 34px;
            border-radius: 30px;
            font-weight: 500;
            transition: var(--transition-base);
        }
        .btn-more:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background: var(--brand-primary-light);
        }
        /* ========== Data / Stats ========== */
        .data-section {
            background: linear-gradient(135deg, #0C1E18 0%, #104A33 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .data-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(255, 184, 0, 0.08);
        }
        .data-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 10%;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(10, 143, 92, 0.3);
        }
        .data-section .section-heading h2 {
            color: #fff;
        }
        .data-section .section-heading p {
            color: rgba(255, 255, 255, 0.7);
        }
        .data-section .eyebrow {
            background: rgba(255, 184, 0, 0.15);
            color: var(--brand-accent);
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
            position: relative;
            z-index: 2;
        }
        .data-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            backdrop-filter: blur(6px);
        }
        .data-item .data-icon {
            font-size: 28px;
            color: var(--brand-accent);
            margin-bottom: 12px;
        }
        .data-item .data-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
        }
        .data-item .data-label {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            margin-top: 8px;
        }
        @media (max-width: 768px) {
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .data-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ========== Process / 流程 ========== */
        .process-step {
            text-align: center;
            position: relative;
            padding: 0 16px;
        }
        .step-number {
            width: 56px;
            height: 56px;
            background: var(--brand-primary);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 8px 20px rgba(10, 143, 92, 0.25);
        }
        .process-step h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .process-step p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 0;
        }
        .process-line {
            position: absolute;
            top: 28px;
            left: 60%;
            width: 80%;
            height: 2px;
            background: linear-gradient(to right, var(--brand-primary-light), var(--brand-primary));
            opacity: 0.5;
            z-index: -1;
        }
        @media (max-width: 767px) {
            .process-line {
                display: none;
            }
            .process-step {
                margin-bottom: 32px;
            }
        }
        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-light);
        }
        .accordion-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
        }
        .accordion-button {
            background: var(--bg-white) !important;
            color: var(--text-main) !important;
            font-weight: 600;
            padding: 20px 24px;
            font-size: 1.02rem;
            box-shadow: none !important;
        }
        .accordion-button:not(.collapsed) {
            border-bottom: 1px solid var(--border-color);
            color: var(--brand-primary) !important;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(10, 143, 92, 0.15) !important;
        }
        .accordion-body {
            color: var(--text-body);
            padding: 20px 24px;
            line-height: 1.8;
        }
        .accordion-button::after {
            background-size: 16px;
        }
        /* ========== CTA ========== */
        .cta-section {
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
            padding: 100px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(10, 143, 92, 0.92) 0%, rgba(12, 30, 24, 0.92) 100%);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-content {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: #fff;
            font-size: 2.4rem;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            margin-bottom: 30px;
        }
        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark);
            padding: 70px 0 0;
            color: rgba(255, 255, 255, 0.75);
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1.05rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer-brand {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 14px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand span {
            color: var(--brand-accent);
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
        }
        .site-footer ul li a:hover {
            color: var(--brand-accent);
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 50px;
            padding: 20px 0;
        }
        .footer-copyright {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-copyright a {
            color: rgba(255, 255, 255, 0.6);
        }
        @media (max-width: 767px) {
            .site-footer .row>div {
                margin-bottom: 32px;
            }
            .cta-section {
                background-attachment: scroll;
            }
        }
        /* ========== FAQ Button ========== */
        .accordion-button:not(.collapsed)::after {
            filter: hue-rotate(90deg);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a2540;
            --primary-light: #123a61;
            --accent: #f5b731;
            --accent-dark: #d99e14;
            --bg-light: #f5f7fb;
            --bg-dark: #081c30;
            --text-main: #16263b;
            --text-weak: #5d6d80;
            --border-soft: #e4e9f1;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-card: 0 12px 32px rgba(10, 30, 60, .08);
            --shadow-hover: 0 18px 44px rgba(10, 30, 60, .14);
            --transition: all .3s ease;
            --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            background: #fff;
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-dark);
        }
        p {
            margin: 0 0 1rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: var(--primary);
            line-height: 1.35;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== 顶部信息条 ===== */
        .top-info-bar {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .82);
            font-size: 13px;
            padding: 7px 0;
        }
        .top-info-bar a {
            color: var(--accent);
            font-weight: 600;
        }
        .top-info-bar i {
            color: var(--accent);
            margin-right: 4px;
        }
        .top-info-bar .info-left span {
            margin-right: 20px;
        }

        /* ===== 主导航 ===== */
        .site-header {
            background: #fff;
            box-shadow: 0 4px 24px rgba(10, 30, 60, .06);
            position: sticky;
            top: 0;
            z-index: 1050;
        }
        .site-header .navbar {
            padding: 14px 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary) !important;
            padding: 0;
        }
        .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent), #ffd96b);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
            box-shadow: 0 6px 16px rgba(245, 183, 49, .35);
        }
        .navbar-brand .brand-text span {
            color: var(--accent);
            font-weight: 800;
        }
        .navbar .nav-link {
            font-size: .95rem;
            font-weight: 600;
            color: var(--text-main);
            padding: 8px 16px !important;
            border-radius: 8px;
            margin: 0 4px;
            transition: var(--transition);
        }
        .navbar .nav-link:hover,
        .navbar .nav-link:focus {
            color: var(--accent-dark);
            background: rgba(245, 183, 49, .1);
        }
        .navbar .nav-link.active {
            color: var(--accent-dark);
            background: rgba(245, 183, 49, .14);
        }
        .navbar-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff !important;
            font-weight: 600;
            font-size: .92rem;
            border-radius: 10px;
            padding: 10px 20px;
            transition: var(--transition);
            box-shadow: 0 6px 18px rgba(10, 37, 64, .18);
            white-space: nowrap;
        }
        .navbar-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(217, 158, 20, .3);
        }
        .navbar-toggler {
            border: none;
            color: var(--primary);
            font-size: 1.3rem;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }

        /* ===== 分类页 Hero ===== */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(8, 28, 48, .92), rgba(10, 37, 64, .82)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 90px 0 100px;
            color: #fff;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -40px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(245, 183, 49, .18);
            filter: blur(50px);
        }
        .category-hero .breadcrumb-custom {
            font-size: .9rem;
            color: rgba(255, 255, 255, .7);
        }
        .category-hero .breadcrumb-custom a {
            color: var(--accent);
        }
        .category-hero h1 {
            color: #fff;
            font-size: 2.6rem;
            margin: 18px 0 12px;
            font-weight: 800;
        }
        .category-hero h1 span {
            color: var(--accent);
        }
        .category-hero p.lead-hero {
            font-size: 1.08rem;
            color: rgba(255, 255, 255, .85);
            max-width: 600px;
            margin-bottom: 28px;
        }
        .category-hero .btn-hero {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            border-radius: 12px;
            padding: 13px 28px;
            box-shadow: 0 10px 26px rgba(245, 183, 49, .4);
            transition: var(--transition);
        }
        .category-hero .btn-hero:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 34px rgba(245, 183, 49, .5);
            background: #ffd44d;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 30px;
        }
        .hero-meta .meta-chip {
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            backdrop-filter: blur(6px);
            border-radius: 40px;
            padding: 6px 16px;
            font-size: .85rem;
            color: #fff;
        }
        .hero-meta .meta-chip i {
            color: var(--accent);
            margin-right: 5px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 70px 0;
        }
        .section-bg {
            background: var(--bg-light);
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 45px;
        }
        .section-head .badge-main {
            display: inline-block;
            background: rgba(245, 183, 49, .15);
            color: var(--accent-dark);
            font-weight: 700;
            font-size: .82rem;
            padding: 6px 18px;
            border-radius: 40px;
            margin-bottom: 12px;
            border: 1px solid rgba(245, 183, 49, .3);
        }
        .section-head h2 {
            font-size: 2rem;
            font-weight: 800;
        }
        .section-head p {
            color: var(--text-weak);
        }

        /* ===== 分类简介 ===== */
        .intro-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 30px;
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: var(--transition);
            border: 1px solid var(--border-soft);
        }
        .intro-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .intro-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.3rem;
            margin-bottom: 18px;
        }
        .intro-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .intro-card p {
            color: var(--text-weak);
            font-size: .93rem;
            margin: 0;
        }
        .intro-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
            height: 100%;
            min-height: 320px;
        }
        .intro-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .intro-image-wrap:hover img {
            transform: scale(1.03);
        }

        /* ===== 数据统计（深色沉浸） ===== */
        .stats-section {
            background: linear-gradient(120deg, #081c30, #0a2540);
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 20%;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(245, 183, 49, .1);
            filter: blur(60px);
        }
        .stats-section .section-head h2 {
            color: #fff;
        }
        .stats-section .section-head p {
            color: rgba(255, 255, 255, .7);
        }
        .stat-card {
            text-align: center;
            padding: 30px 20px;
            background: rgba(255, 255, 255, .06);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, .12);
            backdrop-filter: blur(6px);
            transition: var(--transition);
            height: 100%;
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-4px);
        }
        .stat-card .number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-card .label {
            color: rgba(255, 255, 255, .75);
            font-size: .95rem;
            margin-top: 6px;
        }

        /* ===== 入门流程步骤 ===== */
        .step-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            position: relative;
            height: 100%;
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: rgba(245, 183, 49, .4);
            line-height: 1;
        }
        .step-card h4 {
            font-size: 1.05rem;
            margin: 12px 0 8px;
        }
        .step-card p {
            color: var(--text-weak);
            font-size: .9rem;
            margin: 0;
        }
        .step-line {
            display: flex;
            justify-content: center;
            align-items: center;
            color: var(--accent);
            font-size: 1.2rem;
            margin-top: 30px;
        }

        /* ===== 指南内容卡片 ===== */
        .guide-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: var(--transition);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .guide-card .cover-wrap {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
        }
        .guide-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .guide-card:hover .cover-wrap img {
            transform: scale(1.05);
        }
        .guide-card .cover-wrap .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: var(--primary);
            font-size: .8rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 30px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, .16);
        }
        .guide-card .body {
            padding: 20px;
        }
        .guide-card .body h3 {
            font-size: 1.08rem;
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .guide-card .body p {
            color: var(--text-weak);
            font-size: .9rem;
            margin-bottom: 14px;
        }
        .guide-card .card-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-soft);
        }
        .guide-card .card-foot .time {
            font-size: .82rem;
            color: var(--text-weak);
        }
        .guide-card .card-foot .time i {
            color: var(--accent);
            margin-right: 4px;
        }
        .guide-card .card-link {
            font-weight: 700;
            color: var(--primary);
            font-size: .88rem;
        }
        .guide-card .card-link i {
            transition: transform .3s;
        }
        .guide-card:hover .card-link i {
            transform: translateX(5px);
            color: var(--accent-dark);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            padding: 22px 24px;
            margin-bottom: 16px;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(245, 183, 49, .5);
            box-shadow: var(--shadow-hover);
        }
        .faq-item h4 {
            font-size: 1.02rem;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 8px;
        }
        .faq-item h4 i {
            color: var(--accent);
            margin-top: 4px;
        }
        .faq-item p {
            color: var(--text-weak);
            font-size: .92rem;
            margin: 0;
            padding-left: 28px;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 24px;
            padding: 48px 30px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -30px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(245, 183, 49, .15);
            filter: blur(30px);
        }
        .cta-block h2 {
            color: #fff;
            font-size: 1.7rem;
            margin-bottom: 12px;
        }
        .cta-block p {
            color: rgba(255, 255, 255, .8);
            max-width: 520px;
            margin: 0 auto 24px;
        }
        .cta-block .btn-cta {
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            border-radius: 12px;
            padding: 12px 36px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 8px 22px rgba(245, 183, 49, .35);
            transition: var(--transition);
        }
        .cta-block .btn-cta:hover {
            transform: translateY(-3px);
            background: #ffd44d;
            box-shadow: 0 14px 32px rgba(245, 183, 49, .45);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .75);
            padding: 60px 0 0;
            margin-top: 30px;
        }
        .site-footer .footer-brand {
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-footer .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--accent);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .95rem;
        }
        .site-footer .footer-brand span {
            color: var(--accent);
        }
        .site-footer p {
            font-size: .9rem;
            color: rgba(255, 255, 255, .6);
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 9px;
            font-size: .9rem;
        }
        .site-footer ul a {
            color: rgba(255, 255, 255, .65);
        }
        .site-footer ul a:hover {
            color: var(--accent);
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, .1);
            margin-top: 36px;
            padding: 18px 0;
        }
        .footer-copyright {
            font-size: .85rem;
            color: rgba(255, 255, 255, .5);
        }
        .footer-copyright a {
            color: rgba(255, 255, 255, .65);
        }
        .footer-copyright i {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .category-hero {
                padding: 60px 0 70px;
            }
            .category-hero h1 {
                font-size: 2.1rem;
            }
            .navbar .nav-link {
                padding: 10px 16px !important;
                margin: 2px 0;
            }
            .navbar-cta {
                margin-top: 8px;
            }
            .section {
                padding: 50px 0;
            }
            .step-line {
                margin-top: 8px;
                margin-bottom: 8px;
            }
        }
        @media (max-width: 767.98px) {
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero p.lead-hero {
                font-size: 1rem;
            }
            .section-head h2 {
                font-size: 1.6rem;
            }
            .stat-card .number {
                font-size: 1.9rem;
            }
            .top-info-bar .info-left span {
                margin-right: 10px;
            }
            .section {
                padding: 44px 0;
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-hero {
                padding: 46px 0 54px;
            }
            .category-hero h1 {
                font-size: 1.55rem;
            }
            .hero-meta .meta-chip {
                font-size: .78rem;
                padding: 4px 12px;
            }
            .section-head h2 {
                font-size: 1.4rem;
            }
            .cta-block {
                padding: 36px 18px;
            }
            .cta-block h2 {
                font-size: 1.35rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #0b1e4e;
            --primary-light: #15306b;
            --primary-dark: #08153a;
            --accent: #ffb800;
            --accent-hover: #e6a700;
            --accent-soft: #fff8e1;
            --teal: #00c9a7;
            --body-bg: #f4f6fb;
            --surface: #ffffff;
            --text: #16204a;
            --text-muted: #6b7280;
            --border: #e3e8f0;
            --radius-sm: 8px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(11, 30, 78, 0.06);
            --shadow: 0 8px 28px rgba(11, 30, 78, 0.09);
            --shadow-lg: 0 16px 48px rgba(11, 30, 78, 0.14);
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --section-space: 84px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--body-bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
        }
        .section-space {
            padding: var(--section-space) 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-head .section-tag {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent-hover);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .section-head h2 {
            font-size: clamp(1.75rem, 3vw, 2.4rem);
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-head p {
            color: var(--text-muted);
            max-width: 620px;
            margin: 0 auto;
            font-size: 1.02rem;
        }

        .btn {
            border-radius: 999px;
            padding: 12px 30px;
            font-weight: 600;
            border: none;
            transition: all 0.3s ease;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(255, 184, 0, 0.35);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(230, 167, 0, 0.4);
        }
        .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
        }

        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(11, 30, 78, 0.05);
        }
        .site-header .navbar {
            min-height: 72px;
        }
        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary) !important;
        }
        .navbar-brand .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(11, 30, 78, 0.25);
        }
        .navbar-brand .brand-text {
            font-weight: 800;
        }
        .navbar-brand .brand-text span {
            color: var(--accent-hover);
        }
        .navbar .nav-link {
            font-weight: 600;
            color: var(--text) !important;
            padding: 10px 18px !important;
            border-radius: 999px;
            font-size: 0.96rem;
            transition: all 0.25s ease;
        }
        .navbar .nav-link:hover {
            color: var(--primary) !important;
            background: var(--accent-soft);
        }
        .navbar .nav-link.active {
            color: var(--primary) !important;
            background: var(--accent-soft);
            position: relative;
        }
        .navbar .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }
        .navbar-cta {
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            padding: 10px 24px;
            font-weight: 600;
            font-size: 0.92rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(11, 30, 78, 0.25);
        }
        .navbar-cta:hover {
            background: var(--primary-light);
            color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(11, 30, 78, 0.35);
        }
        .navbar-toggler {
            border: none;
            color: var(--primary);
            font-size: 1.4rem;
            padding: 4px 10px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }

        .page-banner {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 72px 0 64px;
            color: #fff;
            overflow: hidden;
        }
        .page-banner .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(11, 30, 78, 0.95), rgba(11, 30, 78, 0.72) 55%, rgba(21, 48, 107, 0.55));
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            margin-bottom: 20px;
            color: rgba(255, 255, 255, 0.75);
        }
        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.75);
            transition: color 0.2s;
        }
        .breadcrumb-nav a:hover {
            color: var(--accent);
        }
        .breadcrumb-nav .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .breadcrumb-nav .current {
            color: rgba(255, 255, 255, 0.9);
            max-width: 280px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .banner-title {
            font-size: clamp(1.6rem, 3.5vw, 2.5rem);
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
            max-width: 800px;
            letter-spacing: -0.5px;
        }
        .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.85);
        }
        .banner-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            padding: 6px 16px;
            backdrop-filter: blur(6px);
        }
        .banner-meta .meta-item i {
            color: var(--accent);
        }

        .article-section {
            padding: 56px 0 72px;
        }
        .article-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 48px;
            border: 1px solid rgba(227, 232, 240, 0.7);
        }
        .article-content {
            font-size: 1.02rem;
            line-height: 1.92;
            color: #2d3555;
            word-wrap: break-word;
        }
        .article-content h2 {
            font-size: 1.55rem;
            font-weight: 800;
            color: var(--primary);
            margin: 40px 0 20px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border);
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            margin: 32px 0 14px;
        }
        .article-content p {
            margin-bottom: 18px;
        }
        .article-content a {
            color: var(--accent-hover);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--primary);
        }
        .article-content img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            margin: 20px 0;
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-soft);
            padding: 18px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            color: #5b4a00;
            font-style: normal;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 18px;
            padding-left: 24px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content ul li::marker {
            color: var(--accent-hover);
        }
        .article-content ol li::marker {
            color: var(--accent-hover);
            font-weight: 700;
        }
        .article-content code {
            background: #eff2f8;
            padding: 3px 8px;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--primary);
        }
        .article-content pre {
            background: var(--primary-dark);
            color: #d1d9e6;
            padding: 20px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 24px 0;
        }
        .article-content pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 12px 16px;
            text-align: left;
        }
        .article-content table th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .article-content table tr:nth-child(even) {
            background: #f8f9fc;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #f0f2f8;
            color: var(--primary);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 0.82rem;
            font-weight: 600;
            transition: all 0.25s;
        }
        .tag-badge:hover {
            background: var(--primary);
            color: #fff;
        }
        .tag-badge i {
            font-size: 0.75rem;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .article-share span {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .share-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #f0f2f8;
            color: var(--primary);
            font-size: 0.85rem;
            transition: all 0.25s;
        }
        .share-btn:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-icon {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--accent-soft);
            color: var(--accent-hover);
            font-size: 2rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 1.6rem;
            color: var(--primary);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
            max-width: 400px;
            margin-left: auto;
            margin-right: auto;
        }

        .sidebar-widget {
            background: var(--surface);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 26px;
            margin-bottom: 24px;
            border: 1px solid rgba(227, 232, 240, 0.6);
            transition: box-shadow 0.3s;
        }
        .sidebar-widget:hover {
            box-shadow: var(--shadow);
        }
        .sidebar-widget h5 {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-widget h5 i {
            color: var(--accent-hover);
        }
        .side-post-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px dashed var(--border);
            transition: all 0.3s;
        }
        .side-post-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .side-post-item .post-icon {
            flex-shrink: 0;
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: var(--accent-soft);
            color: var(--accent-hover);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            margin-top: 2px;
        }
        .side-post-item .post-body {
            min-width: 0;
        }
        .side-post-item .post-title {
            display: block;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text);
            line-height: 1.45;
            transition: color 0.2s;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .side-post-item:hover .post-title {
            color: var(--accent-hover);
        }
        .side-post-item .post-date {
            display: block;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .side-cat-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .side-cat-list li {
            margin-bottom: 8px;
        }
        .side-cat-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 16px;
            background: #f8f9fc;
            border-radius: 12px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text);
            transition: all 0.3s;
        }
        .side-cat-list a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateX(4px);
        }
        .side-cat-list a span {
            background: var(--accent-soft);
            color: var(--accent-hover);
            border-radius: 999px;
            font-size: 0.75rem;
            padding: 2px 10px;
            font-weight: 700;
        }
        .side-cat-list a:hover span {
            background: rgba(255, 255, 255, 0.2);
            color: var(--accent);
        }
        .side-alert {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius);
            padding: 30px 26px;
            color: #fff;
            text-align: center;
        }
        .side-alert .alert-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .side-alert h5 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .side-alert p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 16px;
        }

        .widget-note {
            background: var(--accent-soft);
            border-radius: 12px;
            padding: 16px;
            font-size: 0.85rem;
            color: #6b5600;
            line-height: 1.6;
            display: flex;
            gap: 10px;
            align-items: flex-start;
        }
        .widget-note i {
            color: var(--accent-hover);
            font-size: 1rem;
            margin-top: 3px;
        }

        .related-section {
            background: var(--surface);
            padding: 72px 0;
            border-top: 1px solid var(--border);
        }
        .related-card {
            background: var(--body-bg);
            border-radius: var(--radius);
            padding: 24px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: transform 0.3s, box-shadow 0.3s;
            border: 1px solid var(--border);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(255, 184, 0, 0.4);
        }
        .related-card .related-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        .related-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 0;
            flex-grow: 1;
        }
        .related-card .related-link {
            margin-top: 16px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent-hover);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.3s;
        }
        .related-card .related-link:hover {
            gap: 8px;
            color: var(--primary);
        }

        .faq-section {
            background: var(--body-bg);
            padding: 72px 0;
        }
        .faq-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 16px;
            overflow: hidden;
            background: var(--surface);
            box-shadow: var(--shadow-sm);
        }
        .faq-accordion .accordion-button {
            background: var(--surface);
            color: var(--text);
            font-weight: 700;
            font-size: 1rem;
            padding: 18px 24px;
            transition: all 0.3s;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--primary);
            color: #fff;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            filter: brightness(10) contrast(1);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(255, 184, 0, 0.3);
            border-color: var(--accent);
        }
        .faq-accordion .accordion-body {
            padding: 20px 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 184, 0, 0.08);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(0, 201, 167, 0.06);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-box {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            color: #fff;
        }
        .cta-box h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-box p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            font-size: 1.02rem;
        }
        .cta-box .cta-btns {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 28px;
            font-size: 0.92rem;
        }
        .site-footer .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
        }
        .site-footer .footer-brand span {
            color: var(--accent);
        }
        .site-footer .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 16px;
        }
        .site-footer p {
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            font-size: 0.9rem;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.25s, padding-left 0.25s;
        }
        .site-footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer ul li i {
            color: var(--accent);
            font-size: 0.85rem;
            width: 20px;
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding-top: 24px;
        }
        .footer-copyright {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-copyright a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-copyright a:hover {
            color: var(--accent);
        }

        .back-top {
            position: fixed;
            right: 20px;
            bottom: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            box-shadow: var(--shadow);
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s;
            z-index: 999;
            border: none;
        }
        .back-top.show {
            opacity: 1;
            visibility: visible;
        }
        .back-top:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-4px);
        }

        @media (min-width: 992px) {
            .navbar .nav-item {
                margin: 0 2px;
            }
        }
        @media (max-width: 991.98px) {
            .site-header .navbar {
                min-height: 64px;
            }
            .navbar-collapse {
                background: var(--surface);
                border-radius: var(--radius);
                padding: 18px;
                box-shadow: var(--shadow);
                margin-top: 12px;
                border: 1px solid var(--border);
            }
            .navbar .nav-link {
                padding: 12px 16px !important;
            }
            .navbar-cta {
                margin-top: 12px;
                justify-content: center;
                width: 100%;
            }
            .article-card {
                padding: 30px;
            }
        }
        @media (max-width: 767.98px) {
            :root {
                --section-space: 56px;
            }
            .page-banner {
                padding: 48px 0 44px;
            }
            .banner-meta {
                gap: 10px;
            }
            .article-section {
                padding: 36px 0 48px;
            }
            .article-card {
                padding: 22px;
                border-radius: var(--radius);
            }
            .article-content {
                font-size: 0.97rem;
                line-height: 1.85;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
            .section-head {
                margin-bottom: 32px;
            }
        }
        @media (max-width: 575.98px) {
            .navbar-brand {
                font-size: 1.12rem;
            }
            .navbar-brand .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .banner-title {
                font-size: 1.35rem;
            }
            .banner-meta .meta-item {
                padding: 5px 12px;
                font-size: 0.82rem;
            }
            .page-banner {
                padding: 40px 0 36px;
            }
            .sidebar-widget {
                padding: 20px;
            }
            .related-section {
                padding: 48px 0;
            }
            .faq-section {
                padding: 48px 0;
            }
            .cta-section {
                padding: 48px 0;
            }
            .site-footer {
                padding: 44px 0 24px;
            }
            .article-tags {
                gap: 8px;
            }
            .tag-badge {
                font-size: 0.78rem;
                padding: 5px 12px;
            }
        }
        @media (max-width: 375px) {
            .navbar-brand .brand-text {
                font-size: 1rem;
            }
            .banner-title {
                font-size: 1.2rem;
            }
        }

/* roulang page: category2 */
:root {
    --primary: #0b1220;
    --primary-light: #17223b;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --gold: #f59e0b;
    --green: #10b981;
    --purple: #8b5cf6;
    --bg-body: #f4f7fb;
    --bg-white: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --border-color: #e8edf4;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-sm: 0 4px 16px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 12px 36px rgba(15, 23, 42, 0.1);
    --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.16);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*,
*::before,
*::after {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background: var(--bg-body);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
button,
input,
textarea {
    font-family: inherit;
}
.container {
    max-width: 1200px;
}
section {
    position: relative;
}
.section {
    padding: 96px 0;
}
.section-alt {
    background: var(--bg-white);
}
.section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 56px;
}
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--accent);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    padding: 8px 18px;
    border-radius: 100px;
    margin-bottom: 18px;
}
.section-tag::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}
.section-head h2 {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.3;
    color: var(--primary);
    margin-bottom: 16px;
}
.section-head p {
    font-size: 17px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 0;
}
.btn {
    border-radius: 12px;
    font-weight: 600;
    padding: 12px 28px;
    transition: var(--transition);
}
.btn-accent {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
}
.btn-accent:hover,
.btn-accent:focus {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.32);
}
.btn-gold {
    background: var(--gold);
    border-color: var(--gold);
    color: #fff;
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.28);
}
.btn-gold:hover,
.btn-gold:focus {
    background: #d97706;
    border-color: #d97706;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(245, 158, 11, 0.36);
}
.btn-outline-light-custom {
    border: 2px solid rgba(255, 255, 255, 0.7);
    color: #fff;
    background: transparent;
    border-radius: 12px;
    padding: 12px 28px;
    font-weight: 600;
}
.btn-outline-light-custom:hover {
    background: #fff;
    color: var(--primary);
}

/* ===== Header / Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1050;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(232, 237, 244, 0.9);
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}
.site-header .navbar {
    min-height: 76px;
}
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: var(--primary) !important;
    letter-spacing: -0.5px;
}
.brand-icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), #1d4ed8);
    color: #fff;
    border-radius: 12px;
    font-size: 18px;
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.32);
}
.brand-text span {
    color: var(--accent);
}
.navbar .nav-link {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-muted) !important;
    padding: 10px 18px !important;
    border-radius: 100px;
    margin: 0 4px;
    position: relative;
}
.navbar .nav-link:hover {
    color: var(--accent) !important;
    background: rgba(37, 99, 235, 0.06);
}
.navbar .nav-link.active {
    color: var(--accent) !important;
    background: rgba(37, 99, 235, 0.1);
}
.navbar-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff !important;
    padding: 12px 24px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 15px;
    box-shadow: 0 8px 20px rgba(11, 18, 32, 0.2);
    transition: var(--transition);
}
.navbar-cta:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.3);
}
.navbar-toggler {
    border: none;
    color: var(--primary);
    font-size: 22px;
    padding: 6px 10px;
}
.navbar-toggler:focus {
    box-shadow: none;
}

/* ===== Page Banner ===== */
.page-banner {
    min-height: 440px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}
.banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(11, 18, 32, 0.92) 0%, rgba(11, 18, 32, 0.78) 55%, rgba(37, 99, 235, 0.35) 100%);
}
.banner-content {
    position: relative;
    z-index: 2;
    color: #fff;
    padding: 80px 0;
}
.banner-content .breadcrumb {
    margin-bottom: 20px;
    --bs-breadcrumb-divider-color: rgba(255, 255, 255, 0.5);
}
.banner-content .breadcrumb a {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
}
.banner-content .breadcrumb a:hover {
    color: #fff;
}
.banner-content .breadcrumb-item.active {
    color: rgba(255, 255, 255, 0.6);
}
.banner-chip {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(8px);
    padding: 8px 18px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 22px;
    color: #fbbf24;
}
.banner-content h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 18px;
    letter-spacing: -1px;
}
.banner-content p {
    font-size: 18px;
    line-height: 1.8;
    max-width: 620px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
}
.banner-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 36px;
    margin-top: 8px;
}
.banner-stats .stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.banner-stats .stat strong {
    font-size: 30px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
}
.banner-stats .stat strong span {
    color: var(--gold);
}
.banner-stats .stat span {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

/* ===== Feature Card ===== */
.feature-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    height: 100%;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), #60a5fa);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}
.feature-card:hover::before {
    transform: scaleX(1);
}
.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}
.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(37, 99, 235, 0.04));
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 22px;
}
.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}
.feature-card p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.75;
    margin-bottom: 0;
}

/* ===== Platform Card ===== */
.platform-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.platform-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.platform-img {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}
.platform-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.platform-card:hover .platform-img img {
    transform: scale(1.06);
}
.platform-img::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(11, 18, 32, 0.45) 100%);
}
.platform-badge {
    position: absolute;
    top: 18px;
    left: 18px;
    z-index: 2;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    color: #fff;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
}
.badge-gold {
    background: linear-gradient(135deg, var(--gold), #f97316);
}
.badge-blue {
    background: linear-gradient(135deg, var(--accent), #60a5fa);
}
.badge-green {
    background: linear-gradient(135deg, var(--green), #34d399);
}
.badge-purple {
    background: linear-gradient(135deg, var(--purple), #a78bfa);
}
.platform-rate {
    position: absolute;
    right: 18px;
    bottom: 14px;
    z-index: 2;
    color: #fff;
    background: rgba(11, 18, 32, 0.6);
    backdrop-filter: blur(6px);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 700;
}
.platform-rate i {
    color: var(--gold);
    margin-right: 6px;
}
.platform-info {
    padding: 28px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.platform-info h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
}
.platform-info p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.75;
    flex: 1;
    margin-bottom: 18px;
}
.platform-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 22px;
}
.platform-tags span {
    background: #f1f5f9;
    color: var(--text-main);
    font-size: 13px;
    padding: 5px 14px;
    border-radius: 100px;
    font-weight: 500;
}
.platform-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
}
.platform-link:hover {
    color: var(--accent-hover);
    gap: 12px;
}

/* ===== Stats Section ===== */
.stats-section {
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}
.stats-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(11, 18, 32, 0.94), rgba(11, 18, 32, 0.82));
}
.stats-section .container {
    position: relative;
    z-index: 2;
}
.stats-head {
    text-align: center;
    margin-bottom: 56px;
    color: #fff;
}
.stats-head span {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: #60a5fa;
    margin-bottom: 12px;
}
.stats-head h2 {
    font-size: 34px;
    font-weight: 800;
    color: #fff;
}
.stat-item {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 36px 24px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(8px);
}
.stat-item:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-6px);
    border-color: rgba(96, 165, 250, 0.4);
}
.stat-item strong {
    display: block;
    font-size: 44px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 10px;
}
.stat-item strong span {
    color: var(--gold);
}
.stat-item span {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.75);
}

/* ===== Rank Section ===== */
.rank-list {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}
.rank-item {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
}
.rank-item:last-child {
    border-bottom: none;
    padding-bottom: 8px;
}
.rank-item:first-child {
    padding-top: 8px;
}
.rank-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.rank-meta .rank-label {
    font-weight: 600;
    color: var(--primary);
    font-size: 16px;
}
.rank-meta .rank-num {
    font-size: 18px;
    font-weight: 800;
    color: var(--accent);
}
.rank-bar {
    height: 8px;
    background: #eef2f7;
    border-radius: 100px;
    overflow: hidden;
}
.rank-bar-fill {
    height: 100%;
    border-radius: 100px;
    background: linear-gradient(90deg, var(--accent), #60a5fa);
    width: 0;
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}
.rank-item:nth-child(2) .rank-bar-fill {
    background: linear-gradient(90deg, var(--green), #34d399);
}
.rank-item:nth-child(3) .rank-bar-fill {
    background: linear-gradient(90deg, var(--gold), #fbbf24);
}
.rank-item:nth-child(4) .rank-bar-fill {
    background: linear-gradient(90deg, var(--purple), #a78bfa);
}
.rank-item:nth-child(5) .rank-bar-fill {
    background: linear-gradient(90deg, #14b8a6, #2dd4bf);
}

/* ===== FAQ ===== */
.accordion {
    --bs-accordion-border-radius: 16px;
    --bs-accordion-border-width: 1px;
    --bs-accordion-border-color: var(--border-color);
    --bs-accordion-inner-border-radius: 15px;
    --bs-accordion-btn-focus-box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}
.accordion-item {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 16px !important;
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
}
.accordion-item:has(.accordion-button:not(.collapsed)) {
    border-color: rgba(37, 99, 235, 0.35);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.08);
}
.accordion-button {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    padding: 22px 26px;
    background: #fff;
    gap: 12px;
}
.accordion-button::after {
    background-size: 16px;
    opacity: 0.5;
}
.accordion-button:not(.collapsed) {
    color: var(--accent);
    background: #f8faff;
    box-shadow: none;
}
.accordion-body {
    padding: 0 26px 24px;
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.8;
    border-top: 1px dashed var(--border-color);
    padding-top: 18px;
    margin-top: -4px;
}

/* ===== CTA ===== */
.cta-section {
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding: 110px 0;
    position: relative;
    text-align: center;
    overflow: hidden;
}
.cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(11, 18, 32, 0.92), rgba(37, 99, 235, 0.55));
}
.cta-content {
    position: relative;
    z-index: 2;
    color: #fff;
    max-width: 720px;
}
.cta-content h2 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 18px;
    line-height: 1.3;
}
.cta-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 36px;
    line-height: 1.8;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--primary);
    color: rgba(255, 255, 255, 0.75);
    padding: 72px 0 0;
}
.site-footer .footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}
.site-footer .footer-brand span {
    color: #60a5fa;
}
.site-footer p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.6);
}
.site-footer h5 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
    letter-spacing: 1px;
}
.site-footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.site-footer ul li {
    margin-bottom: 10px;
}
.site-footer ul li a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: var(--transition);
}
.site-footer ul li a:hover {
    color: #fff;
    padding-left: 4px;
}
.site-footer ul li i {
    color: #60a5fa;
    width: 20px;
}
.footer-divider {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 56px;
    padding: 22px 0;
}
.footer-copyright {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}
.footer-copyright a {
    color: rgba(255, 255, 255, 0.6);
}
.footer-copyright a:hover {
    color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .section {
        padding: 80px 0;
    }
    .banner-content h1 {
        font-size: 40px;
    }
    .stats-section,
    .cta-section {
        background-attachment: scroll;
    }
}
@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }
    .section-head {
        margin-bottom: 40px;
    }
    .section-head h2 {
        font-size: 28px;
    }
    .page-banner {
        min-height: 380px;
    }
    .banner-content h1 {
        font-size: 32px;
    }
    .banner-content p {
        font-size: 16px;
    }
    .banner-stats {
        gap: 24px;
    }
    .banner-stats .stat strong {
        font-size: 24px;
    }
    .navbar .nav-link {
        margin: 4px 0;
    }
    .navbar-cta {
        margin-top: 12px;
        justify-content: center;
        width: 100%;
    }
    .navbar-collapse {
        padding-bottom: 20px;
        border-top: 1px solid var(--border-color);
        margin-top: 12px;
    }
    .stats-section {
        padding: 72px 0;
    }
    .stat-item strong {
        font-size: 34px;
    }
    .cta-content h2 {
        font-size: 30px;
    }
    .rank-list {
        padding: 20px;
    }
}
@media (max-width: 520px) {
    .page-banner {
        min-height: 340px;
    }
    .banner-content h1 {
        font-size: 27px;
    }
    .banner-content p {
        font-size: 15px;
    }
    .banner-stats {
        gap: 18px;
    }
    .banner-stats .stat strong {
        font-size: 22px;
    }
    .banner-stats .stat span {
        font-size: 13px;
    }
    .platform-info {
        padding: 22px;
    }
    .section-head h2 {
        font-size: 24px;
    }
    .feature-card {
        padding: 30px 24px;
    }
    .cta-section {
        padding: 72px 0;
    }
    .cta-content h2 {
        font-size: 26px;
    }
}