/* roulang page: index */
:root {
            --primary: #0d2b52;
            --primary-light: #164580;
            --accent: #e2a93b;
            --accent-dark: #c98f22;
            --bg: #f3f6fb;
            --white: #ffffff;
            --text: #17233b;
            --text-light: #5d6c84;
            --border: #e2e8f2;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow: 0 10px 36px rgba(13, 43, 82, 0.08);
            --shadow-lg: 0 24px 56px rgba(13, 43, 82, 0.14);
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 88px 0;
        }

        .section-alt {
            background: var(--white);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(226, 169, 59, 0.12);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 6px 16px;
            border-radius: 40px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 36px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-light);
            max-width: 680px;
            line-height: 1.8;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 13px 30px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: var(--white);
            box-shadow: 0 8px 24px rgba(13, 43, 82, 0.22);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(13, 43, 82, 0.28);
            color: var(--white);
        }

        .btn-outline {
            background: transparent;
            color: var(--white);
            border: 1.5px solid rgba(255, 255, 255, 0.85);
        }

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

        .btn-ghost {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--border);
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            background: rgba(13, 43, 82, 0.04);
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(226, 169, 59, 0.5);
            outline-offset: 2px;
        }

        .badge {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(226, 169, 59, 0.14);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 600;
            border-radius: 40px;
            letter-spacing: 0.3px;
        }

        /* ========== Header ========== */
        #site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 0;
            background: rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.35);
            box-shadow: 0 4px 30px rgba(13, 43, 82, 0.04);
            transition: var(--transition);
        }

        #site-header.scrolled {
            padding: 10px 0;
            background: rgba(255, 255, 255, 0.92);
            box-shadow: 0 8px 36px rgba(13, 43, 82, 0.09);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 18px;
            box-shadow: 0 6px 18px rgba(13, 43, 82, 0.2);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        #main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        #main-nav a {
            padding: 9px 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            border-radius: 40px;
            position: relative;
        }

        #main-nav a:hover {
            color: var(--primary);
            background: rgba(13, 43, 82, 0.05);
        }

        #main-nav a.active {
            color: var(--white);
            background: var(--primary);
            box-shadow: 0 6px 20px rgba(13, 43, 82, 0.18);
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-cta .btn {
            padding: 10px 22px;
            font-size: 14px;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 22px;
            background: rgba(255, 255, 255, 0.7);
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 94vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(8, 25, 48, 0.88), rgba(20, 55, 95, 0.78)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 180px 0 100px;
            color: var(--white);
            overflow: hidden;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg), transparent);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }

        .hero .badge {
            background: rgba(255, 255, 255, 0.15);
            color: var(--white);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(8px);
            padding: 7px 18px;
            font-size: 14px;
            border-radius: 40px;
            margin-bottom: 24px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .hero h1 {
            font-size: 52px;
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }

        .hero p.lead {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 36px;
            max-width: 620px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 56px;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            padding-top: 36px;
            max-width: 720px;
        }

        .stat-item .stat-num {
            font-size: 34px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ========== Features ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(226, 169, 59, 0.4);
        }

        .feature-icon {
            width: 58px;
            height: 58px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 22px;
            margin-bottom: 20px;
            box-shadow: 0 10px 24px rgba(13, 43, 82, 0.2);
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ========== Category Entry ========== */
        .category-panel {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            display: grid;
            grid-template-columns: 1fr 1fr;
            transition: var(--transition);
        }

        .category-panel:hover {
            box-shadow: var(--shadow-lg);
        }

        .category-media {
            position: relative;
            min-height: 340px;
            overflow: hidden;
        }

        .category-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
            transition: transform 0.5s ease;
        }

        .category-panel:hover .category-media img {
            transform: scale(1.04);
        }

        .category-content {
            padding: 46px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .category-content h3 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin: 14px 0;
        }

        .category-content p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        /* ========== News ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .news-card {
            display: flex;
            gap: 20px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: var(--transition);
            align-items: flex-start;
        }

        .news-card:hover {
            border-color: rgba(13, 43, 82, 0.25);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }

        .news-tag {
            flex-shrink: 0;
            background: rgba(226, 169, 59, 0.12);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 40px;
            margin-top: 4px;
        }

        .news-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 6px;
            transition: var(--transition);
        }

        .news-card:hover .news-body h3 {
            color: var(--primary-light);
        }

        .news-body p {
            font-size: 14px;
            color: var(--text-light);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
        }

        .news-meta {
            font-size: 13px;
            color: #9aa7bd;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .news-meta i {
            font-size: 13px;
        }

        .empty-tip {
            padding: 40px;
            text-align: center;
            background: var(--white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
            color: var(--text-light);
            font-size: 15px;
        }

        .news-aside {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .news-aside img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .news-aside .aside-body {
            padding: 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-aside h3 {
            font-size: 20px;
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 10px;
        }

        .news-aside p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ========== Steps ========== */
        .steps-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: var(--white);
        }

        .steps-section .section-title {
            color: var(--white);
        }

        .steps-section .section-subtitle {
            color: rgba(255, 255, 255, 0.75);
        }

        .steps-section .section-label {
            background: rgba(255, 255, 255, 0.15);
            color: var(--white);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 48px;
        }

        .step-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-lg);
            padding: 34px 26px;
            text-align: center;
            transition: var(--transition);
        }

        .step-card:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateY(-4px);
        }

        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary);
            font-size: 20px;
            font-weight: 800;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.active {
            border-color: rgba(226, 169, 59, 0.4);
            box-shadow: var(--shadow);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 22px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            transition: var(--transition);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(13, 43, 82, 0.06);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .faq-answer {
            max-height: 0;
            padding: 0 26px;
            overflow: hidden;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 240px;
            padding: 0 26px 22px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(120deg, #0d2b52, #164580);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            right: -100px;
            top: -100px;
            width: 300px;
            height: 300px;
            background: rgba(226, 169, 59, 0.1);
            border-radius: 50%;
        }

        .cta-inner {
            position: relative;
            text-align: center;
            padding: 40px 20px;
        }

        .cta-inner h2 {
            font-size: 36px;
            color: var(--white);
            font-weight: 700;
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0a1d38;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--white);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            color: var(--white);
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

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

        .footer-bottom {
            padding: 22px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .section {
                padding: 72px 0;
            }

            .hero h1 {
                font-size: 42px;
            }

            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }

            .features-grid {
                gap: 20px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }

            .section-title {
                font-size: 28px;
            }

            .header-cta {
                display: none;
            }

            .menu-toggle {
                display: inline-flex;
            }

            #main-nav {
                position: fixed;
                top: 70px;
                left: 16px;
                right: 16px;
                background: var(--white);
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
                opacity: 0;
                visibility: hidden;
                transform: translateY(-10px);
                transition: var(--transition);
            }

            #main-nav.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }

            #main-nav a {
                text-align: center;
                padding: 12px 20px;
            }

            .hero {
                min-height: auto;
                padding: 140px 0 80px;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero p.lead {
                font-size: 16px;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }

            .category-panel {
                grid-template-columns: 1fr;
            }

            .category-media {
                min-height: 220px;
            }

            .category-media img {
                position: relative;
                height: 220px;
            }

            .category-content {
                padding: 30px 24px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-inner h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }

            .hero {
                padding: 120px 0 60px;
            }

            .hero h1 {
                font-size: 28px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .hero-stats {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .stat-item .stat-num {
                font-size: 26px;
            }

            .logo-text {
                font-size: 17px;
                white-space: normal;
            }

            .news-card {
                flex-direction: column;
                gap: 10px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }

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

/* roulang page: article */
:root {
            --primary: #0D5A45;
            --primary-dark: #083C2F;
            --primary-light: #14715A;
            --accent: #EBA83A;
            --accent-dark: #D18F2C;
            --text: #1B2A25;
            --text-muted: #64736E;
            --bg-white: #FFFFFF;
            --bg-light: #F4F8F6;
            --bg-dark: #0B2E26;
            --border: #DCE7E3;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 12px rgba(6, 50, 40, .06);
            --shadow: 0 8px 30px rgba(6, 50, 40, .09);
            --shadow-lg: 0 24px 60px rgba(6, 50, 40, .14);
            --transition: .3s cubic-bezier(.4, 0, .2, 1);
        }

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

        html { scroll-behavior: smooth; }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-white);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        ul, ol { list-style: none; }
        button { font-family: inherit; cursor: pointer; border: none; background: none; }

        .container {
            max-width: 1260px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .section { padding: 92px 0; }
        .section-alt { background: var(--bg-light); }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(13, 90, 69, .08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 40px;
            letter-spacing: 1px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .section-header h2 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 14px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.7;
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .07);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, .12);
            transition: var(--transition);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, .94);
            box-shadow: 0 6px 30px rgba(6, 50, 40, .08);
            border-bottom-color: rgba(13, 90, 69, .06);
        }

        .site-header.scrolled .logo,
        .site-header.scrolled #main-nav a,
        .site-header.scrolled .header-cta {
            color: var(--text);
        }

        .site-header.scrolled .header-cta {
            border-color: rgba(13, 90, 69, .25);
            background: rgba(13, 90, 69, .06);
        }

        .site-header.scrolled .logo-mark {
            background: var(--primary);
            color: #fff;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: .5px;
            white-space: nowrap;
        }

        .logo:hover { color: rgba(255, 255, 255, .85); }
        .site-header.scrolled .logo:hover { color: var(--primary); }

        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, .18);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #fff;
            transition: var(--transition);
        }

        #main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
        }

        #main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 40px;
            color: rgba(255, 255, 255, .85);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        #main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, .12);
        }

        #main-nav a.active {
            color: #fff;
            background: rgba(255, 255, 255, .18);
            border-color: rgba(255, 255, 255, .15);
        }

        .site-header.scrolled #main-nav a:hover {
            color: var(--primary);
            background: rgba(13, 90, 69, .06);
        }

        .site-header.scrolled #main-nav a.active {
            color: var(--primary);
            background: rgba(13, 90, 69, .08);
            border-color: rgba(13, 90, 69, .1);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 22px;
            border-radius: 40px;
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            background: rgba(255, 255, 255, .08);
            transition: var(--transition);
        }

        .header-cta:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(235, 168, 58, .3);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, .25);
            color: #fff;
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .site-header.scrolled .nav-toggle {
            color: var(--text);
            border-color: rgba(13, 90, 69, .2);
        }

        /* 文章 Hero */
        .article-hero {
            position: relative;
            padding: 180px 0 90px;
            background: linear-gradient(rgba(8, 50, 40, .86), rgba(6, 40, 32, .92)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            color: #fff;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, rgba(255, 255, 255, 1), transparent);
            pointer-events: none;
        }

        .article-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 22px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, .85);
        }

        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb .sep { color: rgba(255, 255, 255, .4); }

        .article-hero .badge {
            display: inline-block;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 700;
            padding: 5px 18px;
            border-radius: 40px;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }

        .article-hero h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.3;
            max-width: 900px;
            margin-bottom: 20px;
            letter-spacing: .5px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            color: rgba(255, 255, 255, .8);
            font-size: 14px;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        /* 文章主体 */
        .article-main {
            padding: 60px 0 90px;
            background: #fff;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: #2a3a35;
        }

        .article-content p {
            margin-bottom: 20px;
        }

        .article-content h2 {
            font-size: 28px;
            margin: 44px 0 18px;
            color: var(--text);
            font-weight: 700;
        }

        .article-content h3 {
            font-size: 22px;
            margin: 36px 0 14px;
            color: var(--text);
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 24px 22px;
            list-style: disc;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-light);
            padding: 20px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 28px 0;
            font-style: italic;
            color: var(--primary-dark);
        }

        .article-content img {
            border-radius: var(--radius);
            margin: 28px 0;
            box-shadow: var(--shadow);
        }

        .article-footer-nav {
            display: flex;
            gap: 14px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: 2px solid transparent;
            transition: var(--transition);
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(13, 90, 69, .25);
        }

        .btn-outline {
            border-color: var(--primary);
            color: var(--primary);
            background: transparent;
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(13, 90, 69, .18);
        }

        .btn-light {
            background: #fff;
            color: var(--primary-dark);
        }

        .btn-light:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(235, 168, 58, .35);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, .6);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .15);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-block { width: 100%; justify-content: center; }

        /* 侧边栏 */
        .sidebar {
            padding-left: 10px;
        }

        .sidebar-widget {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            margin-bottom: 24px;
            transition: var(--transition);
        }

        .sidebar-widget:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .widget-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
        }

        .sidebar-widget h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }

        .sidebar-widget p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .sidebar-widget ul li {
            padding: 8px 0;
            color: var(--text-muted);
            font-size: 14px;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            border-bottom: 1px solid rgba(13, 90, 69, .06);
        }

        .sidebar-widget ul li:last-child { border-bottom: none; }

        .sidebar-widget ul li i {
            color: var(--primary);
            margin-top: 4px;
            flex-shrink: 0;
        }

        .widget-nav ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            color: var(--text);
            font-size: 15px;
            border-bottom: 1px solid rgba(13, 90, 69, .06);
            transition: var(--transition);
        }

        .widget-nav ul li a:hover {
            color: var(--primary);
            padding-left: 6px;
        }

        .widget-nav ul li:last-child a { border-bottom: none; }

        .widget-nav ul li a i {
            color: var(--accent);
            font-size: 12px;
        }

        /* 未找到卡片 */
        .not-found-card {
            text-align: center;
            padding: 80px 40px;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
        }

        .not-found-icon {
            font-size: 56px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .not-found-card h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }

        .not-found-card p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        /* 服务卡片 */
        .service-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: transparent;
        }

        .service-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

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

        .service-card:hover .service-img img {
            transform: scale(1.06);
        }

        .service-img::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(to top, rgba(8, 50, 40, .35), transparent);
        }

        .service-body {
            padding: 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .service-body .badge {
            align-self: flex-start;
            margin-bottom: 12px;
        }

        .service-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .service-body p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .service-body .btn {
            align-self: flex-start;
            padding: 10px 22px;
            font-size: 14px;
        }

        .badge {
            display: inline-block;
            background: rgba(13, 90, 69, .08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 40px;
            letter-spacing: .5px;
        }

        .badge-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }

        /* FAQ */
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 28px;
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow);
            border-color: rgba(13, 90, 69, .15);
        }

        .faq-q {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
        }

        .faq-q i {
            color: var(--accent);
            font-size: 18px;
        }

        .faq-a {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.75;
            padding-left: 30px;
        }

        /* CTA */
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 60px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 36px;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, .06);
            border-radius: 50%;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 20%;
            width: 140px;
            height: 140px;
            background: rgba(235, 168, 58, .12);
            border-radius: 50%;
        }

        .cta-content h2 {
            font-size: 30px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, .8);
            font-size: 16px;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            flex-shrink: 0;
            position: relative;
            z-index: 2;
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .75);
            padding: 72px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .footer-logo .logo-mark {
            background: rgba(255, 255, 255, .12);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .55);
            max-width: 360px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .section { padding: 72px 0; }
            .article-hero { padding: 150px 0 70px; }
            .article-hero h1 { font-size: 34px; }
            .cta-box { flex-direction: column; text-align: center; padding: 44px 32px; }
            .cta-actions { justify-content: center; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .container { padding: 0 20px; }
            .section { padding: 60px 0; }
            .section-header h2 { font-size: 28px; }

            .nav-toggle { display: inline-flex; }

            #main-nav {
                position: fixed;
                top: var(--header-height);
                right: 0;
                left: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 4px;
                display: none;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(6, 50, 40, .12);
                border-radius: 0 0 18px 18px;
            }

            #main-nav.open { display: flex; }

            #main-nav a {
                color: var(--text);
                padding: 12px 20px;
                width: 100%;
                justify-content: flex-start;
                border-radius: 10px;
                border: none;
            }

            #main-nav a:hover {
                background: rgba(13, 90, 69, .06);
                color: var(--primary);
            }

            #main-nav a.active {
                background: rgba(13, 90, 69, .08);
                color: var(--primary);
                border: none;
            }

            .header-inner { flex-wrap: wrap; }
            .header-actions { gap: 8px; }
            .header-cta span { display: none; }
            .header-cta { padding: 9px 16px; }

            .article-hero { padding: 130px 0 60px; }
            .article-hero h1 { font-size: 28px; }

            .article-footer-nav { flex-direction: column; }

            .cta-box { padding: 36px 24px; }
            .cta-content h2 { font-size: 24px; }
            .cta-actions { flex-direction: column; width: 100%; }
            .cta-actions .btn { width: 100%; justify-content: center; }

            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .section { padding: 48px 0; }
            .logo { font-size: 15px; }
            .logo-mark { width: 32px; height: 32px; font-size: 13px; }
            .article-hero h1 { font-size: 24px; }
            .article-meta { flex-wrap: wrap; gap: 10px; }
            .sidebar { padding-left: 0; }
            .faq-item { padding: 18px 20px; }
            .faq-a { padding-left: 0; }
        }

/* roulang page: category1 */
:root {
            --primary: #1e4fd8;
            --primary-dark: #163da8;
            --primary-light: #eaf0ff;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --success: #10b981;
            --bg: #f8fafc;
            --bg-deep: #0f172a;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --white: #ffffff;
            --radius: 16px;
            --radius-sm: 12px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
            --shadow: 0 12px 32px rgba(15, 23, 42, .10);
            --shadow-lg: 0 24px 60px rgba(15, 23, 42, .14);
            --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --space-section: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .3s ease;
        }

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

        ul,
        ol {
            list-style: none;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        .container,
        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(255, 255, 255, .72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, .35);
            transition: background .4s, box-shadow .4s;
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, .95);
            box-shadow: 0 8px 30px rgba(15, 23, 42, .08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            position: relative;
            gap: 16px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 19px;
            font-weight: 800;
            color: var(--bg-deep);
            letter-spacing: .2px;
            white-space: nowrap;
        }

        .logo-mark {
            width: 42px;
            height: 42px;
            flex: 0 0 auto;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 8px 16px rgba(37, 99, 235, .3);
        }

        #main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        #main-nav a {
            padding: 9px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            color: #334155;
            transition: background .3s, color .3s, box-shadow .3s;
        }

        #main-nav a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        #main-nav a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(37, 99, 235, .3);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 700;
            background: var(--primary);
            color: #fff;
            border: none;
            line-height: 1.4;
            transition: transform .3s, box-shadow .3s, background .3s;
        }

        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(37, 99, 235, .3);
            background: var(--primary-dark);
            color: #fff;
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
        }

        .btn-light:hover {
            background: #f1f5f9;
            color: var(--primary-dark);
            box-shadow: 0 12px 28px rgba(0, 0, 0, .15);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, .55);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, .1);
            color: #fff;
            box-shadow: 0 12px 28px rgba(0, 0, 0, .12);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            align-items: center;
            justify-content: center;
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 190px 0 110px;
            background-image: linear-gradient(135deg, rgba(8, 15, 35, .93), rgba(25, 55, 110, .78)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 26px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, .75);
            transition: color .3s;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb i {
            font-size: 11px;
            opacity: .7;
        }

        .hero-content {
            max-width: 720px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .25);
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            backdrop-filter: blur(10px);
        }

        .hero-content h1 {
            font-size: 46px;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 20px;
            letter-spacing: .5px;
        }

        .hero-content p {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 34px;
            max-width: 620px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ===== Section Base ===== */
        .section {
            padding: 100px 0;
        }

        .section-alt {
            background: var(--white);
        }

        .section-head {
            max-width: 760px;
            margin: 0 auto 56px;
            text-align: center;
        }

        .section-head h2 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--bg-deep);
            letter-spacing: -0.5px;
            margin-bottom: 14px;
        }

        .section-head p {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 7px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: .6px;
        }

        /* ===== Steps ===== */
        .step-card {
            position: relative;
            height: 100%;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: transform .35s, box-shadow .35s;
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }

        .step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            box-shadow: 0 8px 18px rgba(37, 99, 235, .28);
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--bg-deep);
        }

        .step-card p {
            font-size: 15px;
            color: var(--text-muted);
        }

        /* ===== Feature Card ===== */
        .feature-card {
            height: 100%;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 24px;
            box-shadow: var(--shadow-sm);
            transition: transform .35s, box-shadow .35s;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }

        .card-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--bg-deep);
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-muted);
        }

        /* ===== Split / Guide ===== */
        .section-split {
            padding: 100px 0;
            background: var(--bg);
        }

        .split-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .split-media img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .media-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(255, 255, 255, .92);
            color: var(--primary);
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 700;
            box-shadow: var(--shadow);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .split-content {
            padding: 20px 0;
        }

        .split-content .section-tag {
            margin-bottom: 20px;
        }

        .split-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--bg-deep);
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .split-content p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 16px;
            color: var(--text);
        }

        .check-list li i {
            color: var(--success);
            font-size: 18px;
            margin-top: 2px;
        }

        .split-content .btn {
            margin-top: 24px;
        }

        /* ===== News ===== */
        .section-news {
            padding: 100px 0;
            background: var(--white);
        }

        .news-card {
            display: flex;
            flex-direction: column;
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: transform .35s, box-shadow .35s;
            height: 100%;
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }

        .news-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .news-body {
            display: flex;
            flex-direction: column;
            flex: 1;
            padding: 28px;
        }

        .news-meta {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-bottom: 14px;
            color: var(--text-muted);
            font-size: 13px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
        }

        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }

        .badge-success {
            background: #ecfdf5;
            color: var(--success);
        }

        .news-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--bg-deep);
            line-height: 1.4;
            margin-bottom: 12px;
        }

        .news-body p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 18px;
        }

        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 700;
            font-size: 15px;
            margin-top: auto;
            transition: gap .3s, color .3s;
        }

        .news-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* ===== FAQ ===== */
        .section-faq {
            padding: 100px 0;
            background: var(--white);
        }

        .accordion {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .accordion-item {
            border-bottom: 1px solid var(--border);
        }

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

        .accordion-title {
            display: block;
            background: var(--white);
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            border: none;
            position: relative;
            line-height: 1.5;
            transition: background .3s, color .3s;
        }

        .accordion-title:hover,
        .accordion-item.is-active .accordion-title {
            background: var(--primary-light);
            color: var(--primary);
        }

        .accordion-title::after {
            content: "∨";
            position: absolute;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 18px;
            color: var(--primary);
            transition: transform .3s;
        }

        .accordion-item.is-active .accordion-title::after {
            content: "∧";
        }

        .accordion-content {
            padding: 0 28px 22px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            background: var(--white);
        }

        /* ===== CTA ===== */
        .section-cta {
            padding: 100px 0;
            background: var(--bg);
        }

        .cta-box {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            padding: 80px 48px;
            text-align: center;
            color: #fff;
            background-image: linear-gradient(135deg, rgba(8, 15, 35, .9), rgba(30, 59, 112, .8)), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            box-shadow: var(--shadow-lg);
        }

        .cta-box h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-box p {
            font-size: 17px;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 28px;
        }

        .cta-box .btn {
            margin-top: 6px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 72px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-logo .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            font-size: 16px;
        }

        .footer-brand p {
            font-size: 15px;
            line-height: 1.8;
            color: #8ea0b4;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col a {
            font-size: 15px;
            color: #8ea0b4;
            transition: color .3s;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
            color: #7b8da1;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .section {
                padding: 80px 0;
            }

            .page-hero {
                padding: 170px 0 80px;
            }

            .hero-content h1 {
                font-size: 38px;
            }

            .cta-box {
                padding: 64px 32px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .hero-content h1 {
                font-size: 32px;
            }

            .hero-content p {
                font-size: 16px;
            }

            .header-inner {
                gap: 10px;
            }

            .header-actions .btn {
                display: none;
            }

            .menu-toggle {
                display: inline-flex;
            }

            #main-nav {
                position: absolute;
                top: calc(100% + 12px);
                left: 14px;
                right: 14px;
                background: rgba(255, 255, 255, .98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: 20px;
                box-shadow: var(--shadow-lg);
                padding: 18px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
            }

            #main-nav a {
                padding: 12px 16px;
                text-align: center;
                border-radius: 12px;
            }

            #main-nav.open {
                display: flex;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .split-media img {
                height: 300px;
            }

            .section-head {
                margin-bottom: 40px;
            }
        }

        @media (max-width: 520px) {
            .container,
            .grid-container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .page-hero {
                padding: 150px 0 64px;
            }

            .hero-content h1 {
                font-size: 26px;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .cta-box {
                padding: 48px 22px;
            }

            .cta-box h2 {
                font-size: 26px;
            }

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

            .brand-logo {
                font-size: 16px;
            }

            .logo-mark {
                width: 36px;
                height: 36px;
                border-radius: 12px;
                font-size: 15px;
            }

            .section-head h2 {
                font-size: 24px;
            }
        }