/* roulang page: index */
:root {
            --sg-primary: #1B2A4A;
            --sg-primary-light: #243660;
            --sg-accent: #C8963E;
            --sg-accent-light: #D4A855;
            --sg-accent-dark: #A67A2E;
            --sg-warm: #E85D3A;
            --sg-warm-hover: #C94A2C;
            --sg-bg: #F8F7F4;
            --sg-bg-white: #FFFFFF;
            --sg-bg-card: #FFFFFF;
            --sg-bg-dark: #0F1A2E;
            --sg-text: #2C2C2C;
            --sg-text-light: #6B7280;
            --sg-text-on-dark: #E8E6E1;
            --sg-border: #E5E2DC;
            --sg-border-light: #F0EDE8;
            --sg-radius-sm: 8px;
            --sg-radius: 12px;
            --sg-radius-lg: 16px;
            --sg-radius-xl: 20px;
            --sg-shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --sg-shadow: 0 4px 16px rgba(0,0,0,0.08);
            --sg-shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
            --sg-shadow-xl: 0 16px 48px rgba(0,0,0,0.15);
            --sg-sidebar-width: 260px;
            --sg-topbar-height: 56px;
            --sg-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--sg-text);
            background-color: var(--sg-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        button, input, textarea, select {
            font-family: inherit;
        }

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--sg-primary);
        }

        /* ============ 桌面端侧边栏 ============ */
        .sg-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sg-sidebar-width);
            height: 100vh;
            background: var(--sg-primary);
            z-index: 1050;
            display: flex;
            flex-direction: column;
            padding: 32px 0 24px 0;
            box-shadow: 4px 0 24px rgba(0,0,0,0.18);
            transition: transform var(--sg-transition);
        }

        .sg-sidebar-logo {
            padding: 0 24px 28px;
            border-bottom: 1px solid rgba(255,255,255,0.12);
            margin-bottom: 20px;
        }

        .sg-sidebar-logo a {
            font-size: 1.2rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.04em;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .sg-sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--sg-radius-sm);
            background: var(--sg-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            flex-shrink: 0;
        }

        .sg-sidebar-nav {
            flex: 1;
            padding: 0 16px;
            list-style: none;
            margin: 0;
        }

        .sg-sidebar-nav li {
            margin-bottom: 2px;
        }

        .sg-sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: var(--sg-radius);
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--sg-transition);
            position: relative;
        }

        .sg-sidebar-nav a:hover {
            color: #FFFFFF;
            background: rgba(255,255,255,0.08);
        }

        .sg-sidebar-nav a.active {
            color: #FFFFFF;
            background: rgba(200,150,62,0.2);
            font-weight: 600;
        }

        .sg-sidebar-nav a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 20px;
            background: var(--sg-accent);
            border-radius: 3px;
        }

        .sg-sidebar-nav a .nav-icon {
            font-size: 1.15rem;
            width: 20px;
            text-align: center;
        }

        .sg-sidebar-footer {
            padding: 20px 24px 0;
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: auto;
        }

        .sg-sidebar-footer .sidebar-cta {
            display: block;
            text-align: center;
            padding: 10px 18px;
            border-radius: var(--sg-radius);
            background: var(--sg-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--sg-transition);
        }

        .sg-sidebar-footer .sidebar-cta:hover {
            background: var(--sg-accent-light);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(200,150,62,0.35);
        }

        /* ============ 移动端顶部导航 ============ */
        .sg-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--sg-topbar-height);
            background: var(--sg-primary);
            z-index: 1040;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0,0,0,0.15);
        }

        .sg-topbar .topbar-logo {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .sg-topbar .topbar-logo .logo-icon-sm {
            width: 30px;
            height: 30px;
            border-radius: 6px;
            background: var(--sg-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .sg-topbar .navbar-toggler {
            border: none;
            color: #fff;
            padding: 6px 10px;
            font-size: 1.4rem;
            background: transparent;
            margin-left: auto;
        }

        .sg-topbar .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(200,150,62,0.5);
            outline: none;
        }

        /* ============ 主内容区 ============ */
        .sg-main-wrapper {
            margin-left: var(--sg-sidebar-width);
            min-height: 100vh;
            background: var(--sg-bg);
        }

        .sg-section {
            padding: 70px 0;
        }

        .sg-section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--sg-primary);
            margin-bottom: 8px;
            position: relative;
        }

        .sg-section-title .title-accent {
            display: inline-block;
            width: 40px;
            height: 3px;
            background: var(--sg-accent);
            border-radius: 2px;
            margin-right: 10px;
            vertical-align: middle;
        }

        .sg-section-subtitle {
            color: var(--sg-text-light);
            font-size: 1rem;
            margin-bottom: 36px;
        }

        .sg-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ============ Hero ============ */
        .sg-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(15,26,46,0.88) 0%, rgba(27,42,74,0.78) 40%, rgba(27,42,74,0.7) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            color: #fff;
            overflow: hidden;
        }

        .sg-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--sg-bg) 0%, transparent 100%);
            z-index: 2;
        }

        .sg-hero-content {
            position: relative;
            z-index: 3;
            padding: 60px 0;
        }

        .sg-hero-badge {
            display: inline-block;
            background: var(--sg-warm);
            color: #fff;
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
            animation: pulse-badge 2.2s ease-in-out infinite;
        }

        @keyframes pulse-badge {
            0%, 100% { box-shadow: 0 0 0 0 rgba(232,93,58,0.5); }
            50% { box-shadow: 0 0 0 14px rgba(232,93,58,0); }
        }

        .sg-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }

        .sg-hero h1 .highlight {
            color: var(--sg-accent-light);
            position: relative;
        }

        .sg-hero-desc {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.85);
            max-width: 560px;
            margin-bottom: 28px;
            line-height: 1.7;
        }

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

        .sg-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--sg-radius);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--sg-transition);
            white-space: nowrap;
        }

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

        .sg-btn-primary:hover {
            background: var(--sg-accent-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(200,150,62,0.4);
        }

        .sg-btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.45);
        }

        .sg-btn-outline:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .sg-btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: var(--sg-radius-sm);
        }

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

        .sg-btn-warm:hover {
            background: var(--sg-warm-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(232,93,58,0.35);
        }

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

        .sg-btn-dark:hover {
            background: var(--sg-primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--sg-shadow-lg);
        }

        /* ============ 数据统计 ============ */
        .sg-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .sg-stat-card {
            background: var(--sg-bg-card);
            border-radius: var(--sg-radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--sg-shadow-sm);
            border: 1px solid var(--sg-border-light);
            transition: all var(--sg-transition);
            position: relative;
            overflow: hidden;
        }

        .sg-stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--sg-shadow-lg);
            border-color: transparent;
        }

        .sg-stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--sg-primary);
            line-height: 1;
            margin-bottom: 6px;
        }

        .sg-stat-card .stat-number .stat-unit {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--sg-accent);
        }

        .sg-stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--sg-text-light);
            font-weight: 500;
        }

        .sg-stat-card .stat-icon-bg {
            position: absolute;
            right: -20px;
            bottom: -20px;
            font-size: 5rem;
            color: rgba(27,42,74,0.04);
            pointer-events: none;
        }

        /* ============ 分类卡片 ============ */
        .sg-category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .sg-cat-card {
            position: relative;
            border-radius: var(--sg-radius-xl);
            overflow: hidden;
            min-height: 300px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--sg-shadow);
            transition: all var(--sg-transition);
            cursor: pointer;
            text-decoration: none;
            color: #fff;
        }

        .sg-cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--sg-shadow-xl);
            color: #fff;
        }

        .sg-cat-card .cat-card-bg {
            position: absolute;
            inset: 0;
            object-fit: cover;
            width: 100%;
            height: 100%;
            transition: transform 0.5s ease;
        }

        .sg-cat-card:hover .cat-card-bg {
            transform: scale(1.06);
        }

        .sg-cat-card .cat-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15,26,46,0.9) 0%, rgba(15,26,46,0.3) 50%, rgba(15,26,46,0.05) 100%);
            z-index: 1;
        }

        .sg-cat-card .cat-card-body {
            position: relative;
            z-index: 2;
            padding: 28px 24px;
            width: 100%;
        }

        .sg-cat-card .cat-card-tag {
            display: inline-block;
            background: var(--sg-accent);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 14px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .sg-cat-card .cat-card-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .sg-cat-card .cat-card-desc {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.8);
            margin-bottom: 0;
        }

        .sg-cat-card .cat-card-arrow {
            position: absolute;
            right: 24px;
            bottom: 28px;
            z-index: 2;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--sg-transition);
            font-size: 1.1rem;
        }

        .sg-cat-card:hover .cat-card-arrow {
            background: var(--sg-accent);
            transform: translateX(4px);
        }

        /* ============ 最新信息列表 ============ */
        .sg-news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .sg-news-card {
            background: var(--sg-bg-card);
            border-radius: var(--sg-radius-lg);
            overflow: hidden;
            box-shadow: var(--sg-shadow-sm);
            border: 1px solid var(--sg-border-light);
            transition: all var(--sg-transition);
            display: flex;
            flex-direction: column;
        }

        .sg-news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--sg-shadow-lg);
            border-color: transparent;
        }

        .sg-news-card .news-card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #e9e6e0;
        }

        .sg-news-card .news-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .sg-news-card:hover .news-card-img-wrap img {
            transform: scale(1.05);
        }

        .sg-news-card .news-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--sg-warm);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            z-index: 2;
            letter-spacing: 0.03em;
        }

        .sg-news-card .news-card-body {
            padding: 18px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .sg-news-card .news-card-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--sg-primary);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .sg-news-card .news-card-excerpt {
            font-size: 0.85rem;
            color: var(--sg-text-light);
            line-height: 1.5;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .sg-news-card .news-card-meta {
            font-size: 0.78rem;
            color: var(--sg-text-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sg-news-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--sg-text-light);
            font-size: 1rem;
            grid-column: 1 / -1;
        }

        /* ============ 核心优势 ============ */
        .sg-advantage-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .sg-adv-card {
            background: var(--sg-bg-card);
            border-radius: var(--sg-radius-lg);
            padding: 30px 22px;
            text-align: center;
            box-shadow: var(--sg-shadow-sm);
            border: 1px solid var(--sg-border-light);
            transition: all var(--sg-transition);
            position: relative;
        }

        .sg-adv-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--sg-shadow-lg);
            border-color: transparent;
        }

        .sg-adv-card .adv-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(200,150,62,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: var(--sg-accent-dark);
            transition: all var(--sg-transition);
        }

        .sg-adv-card:hover .adv-icon-circle {
            background: var(--sg-accent);
            color: #fff;
            transform: scale(1.08);
        }

        .sg-adv-card .adv-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--sg-primary);
            margin-bottom: 6px;
        }

        .sg-adv-card .adv-desc {
            font-size: 0.85rem;
            color: var(--sg-text-light);
            line-height: 1.5;
        }

        /* ============ 里程碑时间线 ============ */
        .sg-timeline {
            position: relative;
            padding-left: 36px;
        }

        .sg-timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(to bottom, var(--sg-accent) 0%, var(--sg-border) 100%);
            border-radius: 3px;
        }

        .sg-timeline-item {
            position: relative;
            padding-bottom: 32px;
            padding-left: 20px;
        }

        .sg-timeline-item:last-child {
            padding-bottom: 0;
        }

        .sg-timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 6px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--sg-accent);
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px var(--sg-accent-light);
            z-index: 2;
        }

        .sg-timeline-item .tl-stage {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--sg-accent-dark);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 4px;
        }

        .sg-timeline-item .tl-title {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--sg-primary);
            margin-bottom: 4px;
        }

        .sg-timeline-item .tl-desc {
            font-size: 0.9rem;
            color: var(--sg-text-light);
            line-height: 1.6;
        }

        /* ============ FAQ ============ */
        .sg-faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }

        .sg-accordion-item {
            background: var(--sg-bg-card);
            border: 1px solid var(--sg-border-light);
            border-radius: var(--sg-radius);
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--sg-shadow-sm);
            transition: all var(--sg-transition);
        }

        .sg-accordion-item:hover {
            box-shadow: var(--sg-shadow);
        }

        .sg-accordion-btn {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--sg-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: all var(--sg-transition);
        }

        .sg-accordion-btn:hover {
            background: rgba(200,150,62,0.04);
        }

        .sg-accordion-btn .acc-icon {
            font-size: 1.2rem;
            color: var(--sg-accent);
            transition: transform var(--sg-transition);
            flex-shrink: 0;
        }

        .sg-accordion-btn[aria-expanded="true"] .acc-icon {
            transform: rotate(45deg);
        }

        .sg-accordion-body {
            padding: 0 20px 18px;
            font-size: 0.9rem;
            color: var(--sg-text-light);
            line-height: 1.7;
            display: none;
        }

        .sg-accordion-body.show {
            display: block;
        }

        /* ============ CTA ============ */
        .sg-cta-section {
            background: linear-gradient(135deg, var(--sg-primary) 0%, var(--sg-primary-light) 100%);
            border-radius: var(--sg-radius-xl);
            padding: 50px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .sg-cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(200,150,62,0.15);
            pointer-events: none;
        }

        .sg-cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(200,150,62,0.1);
            pointer-events: none;
        }

        .sg-cta-section h2 {
            color: #fff;
            font-size: 1.8rem;
            margin-bottom: 10px;
            position: relative;
            z-index: 2;
        }

        .sg-cta-section p {
            color: rgba(255,255,255,0.8);
            margin-bottom: 24px;
            position: relative;
            z-index: 2;
        }

        .sg-cta-section .sg-btn {
            position: relative;
            z-index: 2;
        }

        /* ============ 页脚 ============ */
        .sg-footer {
            background: var(--sg-bg-dark);
            color: var(--sg-text-on-dark);
            padding: 40px 0 20px;
        }

        .sg-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }

        .sg-footer-brand {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .sg-footer-desc {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            line-height: 1.6;
        }

        .sg-footer-links h5 {
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

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

        .sg-footer-links ul li {
            margin-bottom: 6px;
        }

        .sg-footer-links ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.85rem;
            transition: color var(--sg-transition);
        }

        .sg-footer-links ul li a:hover {
            color: var(--sg-accent-light);
        }

        .sg-footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.45);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1199px) {
            .sg-news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .sg-advantage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .sg-stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 991px) {
            .sg-sidebar {
                display: none;
            }
            .sg-topbar {
                display: flex;
            }
            .sg-main-wrapper {
                margin-left: 0;
                padding-top: var(--sg-topbar-height);
            }
            .sg-hero {
                min-height: 420px;
            }
            .sg-hero h1 {
                font-size: 2.2rem;
            }
            .sg-hero-desc {
                font-size: 1rem;
                max-width: 100%;
            }
            .sg-section {
                padding: 48px 0;
            }
            .sg-section-title {
                font-size: 1.5rem;
            }
            .sg-category-grid {
                grid-template-columns: 1fr;
            }
            .sg-news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .sg-footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .sg-container {
                padding: 0 20px;
            }
        }

        @media (max-width: 767px) {
            .sg-hero {
                min-height: 360px;
            }
            .sg-hero h1 {
                font-size: 1.7rem;
            }
            .sg-hero-desc {
                font-size: 0.9rem;
            }
            .sg-hero-buttons {
                flex-direction: column;
                gap: 10px;
            }
            .sg-hero-buttons .sg-btn {
                width: 100%;
                justify-content: center;
            }
            .sg-section {
                padding: 36px 0;
            }
            .sg-section-title {
                font-size: 1.3rem;
            }
            .sg-news-grid {
                grid-template-columns: 1fr;
            }
            .sg-advantage-grid {
                grid-template-columns: 1fr;
            }
            .sg-stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .sg-stat-card .stat-number {
                font-size: 2rem;
            }
            .sg-category-grid {
                grid-template-columns: 1fr;
            }
            .sg-cat-card {
                min-height: 240px;
            }
            .sg-cta-section {
                padding: 32px 20px;
                border-radius: var(--sg-radius-lg);
            }
            .sg-cta-section h2 {
                font-size: 1.4rem;
            }
            .sg-footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .sg-timeline {
                padding-left: 28px;
            }
            .sg-timeline::before {
                left: 10px;
            }
            .sg-timeline-item::before {
                left: -22px;
                width: 12px;
                height: 12px;
            }
            .sg-container {
                padding: 0 14px;
            }
        }

        @media (max-width: 520px) {
            .sg-hero h1 {
                font-size: 1.4rem;
            }
            .sg-hero {
                min-height: 300px;
            }
            .sg-stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .sg-stat-card {
                padding: 18px 12px;
            }
            .sg-stat-card .stat-number {
                font-size: 1.6rem;
            }
            .sg-stat-card .stat-label {
                font-size: 0.78rem;
            }
            .sg-btn {
                padding: 10px 18px;
                font-size: 0.85rem;
            }
        }

        /* Offcanvas 自定义 */
        .sg-offcanvas {
            background: var(--sg-primary);
            color: #fff;
        }
        .sg-offcanvas .offcanvas-header {
            border-bottom: 1px solid rgba(255,255,255,0.12);
        }
        .sg-offcanvas .offcanvas-title {
            color: #fff;
            font-weight: 700;
        }
        .sg-offcanvas .btn-close {
            filter: invert(1) brightness(2);
        }
        .sg-offcanvas .offcanvas-body {
            padding: 16px;
        }
        .sg-offcanvas-nav {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sg-offcanvas-nav li {
            margin-bottom: 2px;
        }
        .sg-offcanvas-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 16px;
            border-radius: var(--sg-radius);
            color: rgba(255,255,255,0.8);
            font-size: 1rem;
            font-weight: 500;
            transition: all var(--sg-transition);
        }
        .sg-offcanvas-nav a:hover,
        .sg-offcanvas-nav a.active {
            background: rgba(200,150,62,0.2);
            color: #fff;
        }

/* roulang page: article */
:root {
            --primary: #1E3A8A;
            --primary-dark: #1E40AF;
            --primary-light: #3B82F6;
            --secondary: #F59E0B;
            --secondary-light: #FCD34D;
            --bg-main: #F8FAFC;
            --bg-white: #FFFFFF;
            --text-dark: #1E293B;
            --text-body: #334155;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --sidebar-bg: #0F172A;
            --sidebar-text: #CBD5E1;
            --sidebar-hover: #1E293B;
            --sidebar-active: #1E3A8A;
            --border-color: #E2E8F0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
            --transition: 0.2s ease;
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            line-height: 1.6;
            color: var(--text-body);
            background: var(--bg-main);
            margin: 0;
            overflow-x: hidden;
        }

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

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

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

        .sg-layout {
            display: flex;
            min-height: 100vh;
        }

        /* 左侧竖向导航 - 桌面端 */
        .sg-sidebar {
            width: 240px;
            flex-shrink: 0;
            background: var(--sidebar-bg);
            display: flex;
            flex-direction: column;
            padding: 1.5rem 1rem;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1040;
            transition: transform var(--transition);
        }

        .sg-main-content {
            margin-left: 240px;
            flex: 1;
            background: var(--bg-main);
            min-height: 100vh;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            text-decoration: none;
            margin-bottom: 2rem;
            padding: 0 0.5rem;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: white;
            font-weight: 700;
            font-size: 1.25rem;
            border-radius: 10px;
        }

        .brand-text {
            font-size: 1.125rem;
            font-weight: 600;
            color: white;
        }

        .sidebar-nav {
            flex: 1;
        }

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

        .sidebar-nav .nav-item {
            margin-bottom: 0.25rem;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            padding: 0.75rem 1rem;
            color: var(--sidebar-text);
            border-radius: var(--radius-sm);
            font-weight: 500;
            transition: background var(--transition), color var(--transition);
            text-decoration: none;
        }

        .sidebar-nav .nav-link:hover {
            background: var(--sidebar-hover);
            color: white;
        }

        .sidebar-nav .nav-link.active {
            background: var(--sidebar-active);
            color: white;
        }

        .sidebar-footer {
            margin-top: auto;
            padding-top: 1rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.75rem;
            color: var(--text-light);
            text-align: center;
        }

        /* 移动端顶部导航条 */
        .sg-topbar {
            display: none;
        }

        @media (max-width: 991.98px) {
            .sg-sidebar {
                display: none;
            }
            .sg-main-content {
                margin-left: 0;
            }
            .sg-topbar {
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 0.75rem 1rem;
                background: var(--sidebar-bg);
                color: white;
                position: sticky;
                top: 0;
                z-index: 1030;
            }
            .topbar-logo {
                display: flex;
                align-items: center;
                gap: 0.5rem;
                color: white;
                text-decoration: none;
                font-weight: 600;
            }
            .logo-icon-sm {
                width: 32px;
                height: 32px;
                display: flex;
                align-items: center;
                justify-content: center;
                background: var(--primary);
                border-radius: 8px;
                font-weight: 700;
            }
            .navbar-toggler {
                background: transparent;
                border: none;
                color: white;
                font-size: 1.5rem;
                padding: 0.25rem;
            }
        }

        /* 文章内容容器 */
        .article-container {
            max-width: 800px;
            margin: 0 auto;
            padding: 2rem 1.5rem;
        }

        .article-breadcrumb {
            margin-bottom: 1.5rem;
            font-size: 0.875rem;
            color: var(--text-muted);
        }

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

        .article-breadcrumb span {
            margin: 0 0.25rem;
        }

        .article-header {
            margin-bottom: 2rem;
        }

        .article-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 2rem;
            box-shadow: var(--shadow-md);
        }

        .article-cover img {
            width: 100%;
            object-fit: cover;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
            margin-top: 1rem;
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        .article-cat {
            display: inline-block;
            padding: 0.2rem 0.75rem;
            background: rgba(30, 58, 138, 0.08);
            color: var(--primary);
            border-radius: 20px;
            font-weight: 500;
            font-size: 0.75rem;
            text-decoration: none;
        }

        .article-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
        }

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

        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
        }

        .not-found {
            text-align: center;
            padding: 4rem 1.5rem;
        }

        .not-found h2 {
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 1rem;
        }

        .btn-primary-custom {
            background: var(--primary);
            border: none;
            padding: 0.65rem 1.5rem;
            border-radius: 30px;
            font-weight: 500;
            transition: background var(--transition), transform var(--transition);
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        .recommend-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
        }

        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 1.5rem;
        }

        .rec-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            text-decoration: none;
            color: inherit;
            display: block;
        }

        .rec-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            color: inherit;
        }

        .rec-card-img {
            height: 160px;
            overflow: hidden;
        }

        .rec-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .rec-card-body {
            padding: 1rem;
        }

        .rec-card-title {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-dark);
            margin-bottom: 0.25rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .rec-card-time {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        @media (max-width: 767.98px) {
            .article-title {
                font-size: 1.5rem;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Footer */
        .sg-footer {
            background: #0B1121;
            color: rgba(255,255,255,0.7);
            padding: 3rem 1.5rem 1.5rem;
            margin-left: 240px;
        }

        @media (max-width: 991.98px) {
            .sg-footer {
                margin-left: 0;
            }
        }

        .sg-footer .sg-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .sg-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .sg-footer-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: white;
            margin-bottom: 0.75rem;
        }

        .sg-footer-desc {
            font-size: 0.85rem;
            line-height: 1.6;
        }

        .sg-footer-links h5 {
            color: white;
            font-weight: 600;
            margin-bottom: 0.75rem;
            font-size: 0.95rem;
        }

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

        .sg-footer-links li {
            margin-bottom: 0.4rem;
            font-size: 0.85rem;
        }

        .sg-footer-links a {
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            transition: color var(--transition);
        }

        .sg-footer-links a:hover {
            color: var(--secondary-light);
        }

        .sg-footer-bottom {
            text-align: center;
            padding-top: 1.5rem;
            font-size: 0.75rem;
            color: rgba(255,255,255,0.4);
        }

        @media (max-width: 767.98px) {
            .sg-footer-grid {
                grid-template-columns: 1fr;
            }
        }

        .offcanvas-nav {
            list-style: none;
            padding: 0;
        }
        .offcanvas-nav .nav-link {
            display: block;
            padding: 0.75rem 1rem;
            color: var(--text-dark);
            border-radius: var(--radius-sm);
            font-weight: 500;
        }
        .offcanvas-nav .nav-link:hover {
            background: #f1f5f9;
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --sg-primary: #0f1a2e;
            --sg-primary-light: #1a2744;
            --sg-accent: #c9a051;
            --sg-accent-light: #dbb860;
            --sg-accent-dark: #b0893f;
            --sg-bg: #f5f3ef;
            --sg-bg-white: #ffffff;
            --sg-bg-card: #fdfdfc;
            --sg-bg-muted: #f0eeea;
            --sg-text: #1a1a1a;
            --sg-text-secondary: #5a5650;
            --sg-text-muted: #8c8780;
            --sg-text-light: #a8a39c;
            --sg-border: #e5e0d8;
            --sg-border-light: #f0ece6;
            --sg-radius-sm: 8px;
            --sg-radius: 12px;
            --sg-radius-lg: 16px;
            --sg-radius-xl: 20px;
            --sg-shadow-xs: 0 1px 3px rgba(15, 26, 46, 0.04);
            --sg-shadow-sm: 0 2px 8px rgba(15, 26, 46, 0.06);
            --sg-shadow: 0 4px 16px rgba(15, 26, 46, 0.08);
            --sg-shadow-lg: 0 8px 32px rgba(15, 26, 46, 0.10);
            --sg-shadow-xl: 0 16px 48px rgba(15, 26, 46, 0.12);
            --sg-sidebar-width: 260px;
            --sg-topbar-height: 60px;
            --sg-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ========== 基础 Reset ========== */
        *,
        *::before,
        *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
        body {
            margin: 0;
            padding: 0;
            font-family: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            font-size: 15px;
            line-height: 1.7;
            color: var(--sg-text);
            background: var(--sg-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--sg-transition), opacity var(--sg-transition);
        }
        a:hover { color: var(--sg-accent); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { margin: 0; line-height: 1.35; font-weight: 700; color: var(--sg-primary); }
        p { margin: 0; }

        /* ========== 整体布局 ========== */
        .sg-layout {
            display: flex;
            min-height: 100vh;
            flex: 1;
        }

        /* ========== 移动端顶部导航 ========== */
        .sg-topbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--sg-topbar-height);
            padding: 0 20px;
            background: var(--sg-primary);
            color: #fff;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .sg-topbar .topbar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: #fff;
            white-space: nowrap;
        }
        .sg-topbar .topbar-logo:hover { color: var(--sg-accent-light); }
        .sg-topbar .logo-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--sg-accent);
            color: var(--sg-primary);
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
        }
        .sg-topbar .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            padding: 6px 12px;
            color: #fff;
            background: transparent;
            font-size: 22px;
            cursor: pointer;
            transition: all var(--sg-transition);
        }
        .sg-topbar .navbar-toggler:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.35);
        }

        /* ========== 左侧竖向导航 (桌面端) ========== */
        .sg-sidebar {
            width: var(--sg-sidebar-width);
            min-width: var(--sg-sidebar-width);
            background: var(--sg-primary);
            color: #fff;
            display: flex;
            flex-direction: column;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1040;
            overflow-y: auto;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 2px 0 24px rgba(0, 0, 0, 0.15);
            padding: 0;
        }
        .sg-sidebar-header {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
        }
        .sg-sidebar-logo {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }
        .sg-sidebar-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--sg-accent);
            color: var(--sg-primary);
            font-weight: 800;
            font-size: 26px;
            box-shadow: 0 4px 16px rgba(201, 160, 81, 0.35);
            transition: transform var(--sg-transition);
        }
        .sg-sidebar-logo:hover .logo-icon { transform: scale(1.05); }
        .sg-sidebar-logo .logo-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: #fff;
        }
        .sg-sidebar-logo .logo-sub {
            font-size: 11px;
            color: var(--sg-text-light);
            letter-spacing: 0.3px;
        }
        .sg-sidebar-nav {
            flex: 1;
            padding: 20px 16px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sg-sidebar-nav .nav-label {
            font-size: 10px;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--sg-text-light);
            padding: 12px 12px 6px;
            font-weight: 600;
        }
        .sg-sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--sg-radius-sm);
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--sg-transition);
            position: relative;
        }
        .sg-sidebar-nav a i {
            font-size: 18px;
            width: 22px;
            text-align: center;
            opacity: 0.7;
            transition: opacity var(--sg-transition);
        }
        .sg-sidebar-nav a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }
        .sg-sidebar-nav a:hover i { opacity: 1; }
        .sg-sidebar-nav a.active {
            background: rgba(201, 160, 81, 0.15);
            color: var(--sg-accent-light);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--sg-accent);
            border-radius: var(--sg-radius-sm);
            border-top-left-radius: 3px;
            border-bottom-left-radius: 3px;
        }
        .sg-sidebar-nav a.active i { opacity: 1; color: var(--sg-accent-light); }
        .sg-sidebar-footer {
            padding: 16px 24px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: var(--sg-text-light);
            text-align: center;
            line-height: 1.6;
        }
        .sg-sidebar-footer .sidebar-cta {
            display: inline-block;
            margin-top: 10px;
            padding: 8px 20px;
            border-radius: 20px;
            background: var(--sg-accent);
            color: var(--sg-primary);
            font-weight: 600;
            font-size: 13px;
            transition: all var(--sg-transition);
            cursor: pointer;
            border: none;
        }
        .sg-sidebar-footer .sidebar-cta:hover {
            background: var(--sg-accent-light);
            box-shadow: 0 4px 16px rgba(201, 160, 81, 0.4);
            transform: translateY(-1px);
        }

        /* ========== Offcanvas 移动菜单 ========== */
        .sg-offcanvas {
            background: var(--sg-primary) !important;
            color: #fff !important;
            width: 280px !important;
        }
        .sg-offcanvas .offcanvas-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 20px;
        }
        .sg-offcanvas .offcanvas-title {
            color: #fff;
            font-weight: 700;
            font-size: 17px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sg-offcanvas .offcanvas-title .offcanvas-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: var(--sg-accent);
            color: var(--sg-primary);
            font-weight: 800;
            font-size: 16px;
        }
        .sg-offcanvas .btn-close {
            filter: invert(1) brightness(2);
            opacity: 0.8;
        }
        .sg-offcanvas .btn-close:hover { opacity: 1; }
        .sg-offcanvas .offcanvas-body {
            padding: 16px 12px;
        }
        .sg-offcanvas .offcanvas-body a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 16px;
            border-radius: var(--sg-radius-sm);
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--sg-transition);
        }
        .sg-offcanvas .offcanvas-body a i {
            font-size: 18px;
            width: 22px;
            text-align: center;
        }
        .sg-offcanvas .offcanvas-body a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }
        .sg-offcanvas .offcanvas-body a.active {
            background: rgba(201, 160, 81, 0.15);
            color: var(--sg-accent-light);
            font-weight: 600;
        }
        .sg-offcanvas .offcanvas-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 12px;
            color: var(--sg-text-light);
            text-align: center;
        }

        /* ========== 右侧主内容区 ========== */
        .sg-main {
            flex: 1;
            margin-left: var(--sg-sidebar-width);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        .sg-main-content {
            flex: 1;
            padding: 0;
        }

        /* ========== 分类页 Banner ========== */
        .sg-cat-banner {
            position: relative;
            background: var(--sg-primary);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 340px;
            display: flex;
            align-items: center;
            padding: 60px 0;
            overflow: hidden;
        }
        .sg-cat-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.88) 0%, rgba(15, 26, 46, 0.65) 40%, rgba(15, 26, 46, 0.5) 100%);
            z-index: 1;
        }
        .sg-cat-banner::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--sg-bg) 0%, transparent 100%);
            z-index: 2;
        }
        .sg-cat-banner-content {
            position: relative;
            z-index: 3;
            width: 100%;
            padding: 0 40px;
        }
        .sg-cat-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .sg-cat-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--sg-transition);
        }
        .sg-cat-breadcrumb a:hover { color: var(--sg-accent-light); }
        .sg-cat-breadcrumb .sep { color: rgba(255, 255, 255, 0.3); }
        .sg-cat-breadcrumb .current { color: var(--sg-accent-light); font-weight: 500; }
        .sg-cat-banner h1 {
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            line-height: 1.2;
        }
        .sg-cat-banner .banner-subtitle {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 600px;
            line-height: 1.6;
        }
        .sg-cat-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(201, 160, 81, 0.2);
            border: 1px solid rgba(201, 160, 81, 0.35);
            color: var(--sg-accent-light);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 16px;
        }

        /* ========== 容器 ========== */
        .sg-container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .sg-container-wide {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 板块通用 ========== */
        .sg-section {
            padding: 64px 0;
        }
        .sg-section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .sg-section-header .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--sg-accent-dark);
            background: rgba(201, 160, 81, 0.1);
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }
        .sg-section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--sg-primary);
            margin-bottom: 10px;
        }
        .sg-section-header p {
            font-size: 15px;
            color: var(--sg-text-secondary);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ========== 业务卡片网格 ========== */
        .sg-biz-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .sg-biz-card {
            background: var(--sg-bg-white);
            border-radius: var(--sg-radius-lg);
            overflow: hidden;
            border: 1px solid var(--sg-border);
            transition: all var(--sg-transition);
            box-shadow: var(--sg-shadow-sm);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .sg-biz-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--sg-shadow-lg);
            border-color: var(--sg-border-light);
        }
        .sg-biz-card .biz-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .sg-biz-card .biz-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .sg-biz-card:hover .biz-card-img img { transform: scale(1.05); }
        .sg-biz-card .biz-card-img .biz-card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--sg-accent);
            color: var(--sg-primary);
            font-size: 11px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
            letter-spacing: 0.3px;
            z-index: 2;
        }
        .sg-biz-card .biz-card-body {
            padding: 22px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .sg-biz-card .biz-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--sg-primary);
            margin-bottom: 8px;
        }
        .sg-biz-card .biz-card-body p {
            font-size: 14px;
            color: var(--sg-text-secondary);
            line-height: 1.6;
            flex: 1;
        }
        .sg-biz-card .biz-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--sg-accent-dark);
            transition: gap var(--sg-transition);
        }
        .sg-biz-card .biz-card-link:hover { gap: 10px; color: var(--sg-accent-dark); }
        .sg-biz-card .biz-card-link i { font-size: 12px; }

        /* ========== 数据亮点区 ========== */
        .sg-stats-section {
            background: var(--sg-primary);
            padding: 56px 0;
            position: relative;
            overflow: hidden;
        }
        .sg-stats-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(201, 160, 81, 0.04);
            pointer-events: none;
        }
        .sg-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .sg-stat-item .stat-number {
            font-size: 44px;
            font-weight: 800;
            color: var(--sg-accent-light);
            line-height: 1;
            margin-bottom: 6px;
        }
        .sg-stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 500;
        }
        .sg-stat-item .stat-suffix {
            font-size: 22px;
            font-weight: 700;
            color: var(--sg-accent-light);
        }

        /* ========== 业务优势列表 ========== */
        .sg-advantage-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .sg-advantage-item {
            display: flex;
            gap: 16px;
            padding: 24px;
            background: var(--sg-bg-white);
            border-radius: var(--sg-radius);
            border: 1px solid var(--sg-border);
            transition: all var(--sg-transition);
            box-shadow: var(--sg-shadow-xs);
        }
        .sg-advantage-item:hover {
            box-shadow: var(--sg-shadow);
            border-color: transparent;
            transform: translateY(-2px);
        }
        .sg-advantage-item .adv-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(201, 160, 81, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--sg-accent-dark);
        }
        .sg-advantage-item .adv-content h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--sg-primary);
            margin-bottom: 4px;
        }
        .sg-advantage-item .adv-content p {
            font-size: 13px;
            color: var(--sg-text-secondary);
            line-height: 1.6;
        }

        /* ========== 资讯列表 ========== */
        .sg-news-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .sg-news-item {
            display: flex;
            gap: 18px;
            padding: 20px 22px;
            background: var(--sg-bg-white);
            border-radius: var(--sg-radius);
            border: 1px solid var(--sg-border);
            transition: all var(--sg-transition);
            align-items: center;
            box-shadow: var(--sg-shadow-xs);
        }
        .sg-news-item:hover {
            box-shadow: var(--sg-shadow);
            border-color: transparent;
            transform: translateX(3px);
        }
        .sg-news-item .news-thumb {
            flex-shrink: 0;
            width: 90px;
            height: 64px;
            border-radius: var(--sg-radius-sm);
            overflow: hidden;
        }
        .sg-news-item .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .sg-news-item .news-info {
            flex: 1;
            min-width: 0;
        }
        .sg-news-item .news-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--sg-primary);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .sg-news-item .news-info .news-meta {
            font-size: 12px;
            color: var(--sg-text-muted);
        }
        .sg-news-item .news-arrow {
            flex-shrink: 0;
            color: var(--sg-text-light);
            transition: color var(--sg-transition);
        }
        .sg-news-item:hover .news-arrow { color: var(--sg-accent); }

        /* ========== FAQ ========== */
        .sg-faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sg-faq-item {
            background: var(--sg-bg-white);
            border-radius: var(--sg-radius);
            border: 1px solid var(--sg-border);
            overflow: hidden;
            transition: all var(--sg-transition);
            box-shadow: var(--sg-shadow-xs);
        }
        .sg-faq-item:hover { box-shadow: var(--sg-shadow-sm); }
        .sg-faq-item .faq-q {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 15px;
            color: var(--sg-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: color var(--sg-transition);
        }
        .sg-faq-item .faq-q:hover { color: var(--sg-accent-dark); }
        .sg-faq-item .faq-q i {
            font-size: 18px;
            transition: transform var(--sg-transition);
            color: var(--sg-text-light);
        }
        .sg-faq-item .faq-a {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--sg-text-secondary);
            line-height: 1.7;
            display: none;
        }
        .sg-faq-item.open .faq-a { display: block; }
        .sg-faq-item.open .faq-q i { transform: rotate(180deg); color: var(--sg-accent); }
        .sg-faq-item.open { border-color: rgba(201, 160, 81, 0.3); }

        /* ========== CTA 区域 ========== */
        .sg-cta-section {
            background: linear-gradient(135deg, var(--sg-primary-light) 0%, var(--sg-primary) 100%);
            padding: 56px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .sg-cta-section::before {
            content: '';
            position: absolute;
            bottom: -30%;
            left: 10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(201, 160, 81, 0.05);
            pointer-events: none;
        }
        .sg-cta-section h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .sg-cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .sg-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 14px;
            transition: all var(--sg-transition);
            cursor: pointer;
            border: none;
            text-decoration: none;
            position: relative;
            z-index: 1;
        }
        .sg-btn-accent {
            background: var(--sg-accent);
            color: var(--sg-primary);
            box-shadow: 0 4px 18px rgba(201, 160, 81, 0.35);
        }
        .sg-btn-accent:hover {
            background: var(--sg-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(201, 160, 81, 0.45);
            color: var(--sg-primary);
        }
        .sg-btn-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            margin-left: 10px;
        }
        .sg-btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        /* ========== 页脚 ========== */
        .sg-footer {
            background: var(--sg-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 0;
        }
        .sg-footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .sg-footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .sg-footer-desc {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
        }
        .sg-footer-links h5 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .sg-footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .sg-footer-links ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--sg-transition);
        }
        .sg-footer-links ul li a:hover { color: var(--sg-accent-light); }
        .sg-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.35);
            text-align: center;
        }

        /* ========== 响应式断点 ========== */
        @media (max-width: 1199.98px) {
            .sg-biz-grid { grid-template-columns: repeat(2, 1fr); }
            .sg-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
        }
        @media (max-width: 991.98px) {
            .sg-sidebar { display: none !important; }
            .sg-main { margin-left: 0; }
            .sg-topbar { display: flex !important; }
            .sg-cat-banner { min-height: 260px; padding: 80px 0 50px; }
            .sg-cat-banner h1 { font-size: 30px; }
            .sg-cat-banner-content { padding: 0 20px; }
            .sg-section { padding: 48px 0; }
            .sg-section-header h2 { font-size: 26px; }
            .sg-advantage-list { grid-template-columns: 1fr; }
            .sg-footer-grid { grid-template-columns: 1fr 1fr; }
            .sg-biz-grid { gap: 16px; }
            .sg-stats-grid { gap: 20px; }
            .sg-stat-item .stat-number { font-size: 34px; }
        }
        @media (max-width: 767.98px) {
            .sg-biz-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; gap: 16px; }
            .sg-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .sg-advantage-list { grid-template-columns: 1fr; }
            .sg-footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .sg-cat-banner { min-height: 220px; padding: 90px 0 40px; }
            .sg-cat-banner h1 { font-size: 26px; }
            .sg-cat-banner .banner-subtitle { font-size: 14px; }
            .sg-section { padding: 40px 0; }
            .sg-section-header h2 { font-size: 22px; }
            .sg-section-header { margin-bottom: 30px; }
            .sg-cta-section h2 { font-size: 22px; }
            .sg-btn-outline { margin-left: 0; margin-top: 10px; }
            .sg-news-item { flex-direction: column; align-items: flex-start; gap: 10px; }
            .sg-news-item .news-thumb { width: 100%; height: 140px; }
            .sg-stat-item .stat-number { font-size: 30px; }
        }
        @media (max-width: 520px) {
            .sg-cat-banner h1 { font-size: 22px; }
            .sg-cat-banner { min-height: 200px; padding: 90px 0 36px; }
            .sg-cat-banner-content { padding: 0 14px; }
            .sg-section-header h2 { font-size: 20px; }
            .sg-stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .sg-stat-item .stat-number { font-size: 26px; }
            .sg-btn { padding: 10px 20px; font-size: 13px; }
            .sg-container, .sg-container-wide { padding: 0 14px; }
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --sg-primary: #0d2b45;
            --sg-primary-light: #1a3f60;
            --sg-primary-dark: #091e33;
            --sg-accent: #c8963e;
            --sg-accent-light: #d9a94e;
            --sg-accent-dark: #a87a2e;
            --sg-bg: #f4f5f7;
            --sg-bg-alt: #eef0f3;
            --sg-surface: #ffffff;
            --sg-text: #1a1a2e;
            --sg-text-secondary: #5a6070;
            --sg-text-muted: #8b919e;
            --sg-border: #e2e5ea;
            --sg-border-light: #eef0f3;
            --sg-radius-sm: 8px;
            --sg-radius: 12px;
            --sg-radius-lg: 16px;
            --sg-radius-xl: 20px;
            --sg-shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --sg-shadow: 0 4px 16px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.04);
            --sg-shadow-lg: 0 12px 32px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.05);
            --sg-shadow-xl: 0 20px 48px rgba(0,0,0,0.12), 0 8px 20px rgba(0,0,0,0.06);
            --sg-sidebar-width: 250px;
            --sg-topbar-height: 60px;
            --sg-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --sg-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
        }

        /* ========== 基础 Reset ========== */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--sg-font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--sg-text);
            background-color: var(--sg-bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
            display: flex;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--sg-transition);
        }
        a:hover {
            color: var(--sg-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul, ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1, h2, h3, h4, h5, h6 {
            margin: 0;
            line-height: 1.3;
            font-weight: 700;
            color: var(--sg-text);
        }
        p {
            margin: 0 0 1rem;
        }
        p:last-child {
            margin-bottom: 0;
        }

        /* ========== 布局结构 ========== */
        .sg-app-layout {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }

        /* ========== 左侧竖向导航（桌面端） ========== */
        .sg-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sg-sidebar-width);
            height: 100vh;
            background: linear-gradient(180deg, var(--sg-primary-dark) 0%, var(--sg-primary) 40%, var(--sg-primary-light) 100%);
            display: flex;
            flex-direction: column;
            z-index: 1040;
            box-shadow: 4px 0 24px rgba(0,0,0,0.15);
            overflow-y: auto;
            overflow-x: hidden;
        }
        .sg-sidebar-brand {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.10);
            flex-shrink: 0;
        }
        .sg-sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #ffffff;
            font-size: 1.25rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            transition: opacity var(--sg-transition);
        }
        .sg-sidebar-logo:hover {
            color: #ffffff;
            opacity: 0.85;
        }
        .sg-logo-icon {
            width: 44px;
            height: 44px;
            background: var(--sg-accent);
            border-radius: var(--sg-radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(200,150,62,0.35);
        }
        .sg-logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .sg-logo-text .sg-logo-main {
            font-size: 1.15rem;
            font-weight: 700;
            letter-spacing: 0.04em;
        }
        .sg-logo-text .sg-logo-sub {
            font-size: 0.7rem;
            font-weight: 400;
            opacity: 0.65;
            letter-spacing: 0.06em;
        }
        .sg-sidebar-nav {
            flex: 1;
            padding: 16px 16px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sg-sidebar-nav .nav-label {
            font-size: 0.68rem;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: rgba(255,255,255,0.35);
            padding: 10px 12px 6px;
            font-weight: 600;
        }
        .sg-sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--sg-radius-sm);
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--sg-transition);
            position: relative;
        }
        .sg-sidebar-nav a i {
            font-size: 1.1rem;
            width: 22px;
            text-align: center;
            flex-shrink: 0;
        }
        .sg-sidebar-nav a:hover {
            background: rgba(255,255,255,0.08);
            color: #ffffff;
        }
        .sg-sidebar-nav a.active {
            background: rgba(255,255,255,0.13);
            color: #ffffff;
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--sg-accent);
        }
        .sg-sidebar-nav a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--sg-accent);
            border-radius: 0 3px 3px 0;
        }
        .sg-sidebar-nav a .badge-count {
            margin-left: auto;
            background: var(--sg-accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            min-width: 24px;
            text-align: center;
        }
        .sg-sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255,255,255,0.10);
            flex-shrink: 0;
        }
        .sg-sidebar-footer .sg-sb-info {
            font-size: 0.72rem;
            color: rgba(255,255,255,0.4);
            line-height: 1.5;
        }

        /* ========== 右侧主内容区 ========== */
        .sg-main-area {
            flex: 1;
            margin-left: var(--sg-sidebar-width);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            background: var(--sg-bg);
        }
        .sg-main-content {
            flex: 1;
        }

        /* ========== 移动端顶部导航 ========== */
        .sg-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--sg-topbar-height);
            background: var(--sg-primary);
            z-index: 1035;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            box-shadow: 0 2px 12px rgba(0,0,0,0.18);
        }
        .sg-topbar .topbar-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #ffffff;
            font-weight: 700;
            font-size: 1.05rem;
        }
        .sg-topbar .logo-icon-sm {
            width: 34px;
            height: 34px;
            background: var(--sg-accent);
            border-radius: 7px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 800;
            color: #fff;
        }
        .sg-topbar .navbar-toggler {
            border: none;
            background: rgba(255,255,255,0.1);
            color: #fff;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            cursor: pointer;
            transition: background var(--sg-transition);
        }
        .sg-topbar .navbar-toggler:hover {
            background: rgba(255,255,255,0.2);
        }

        /* Offcanvas 移动端抽屉导航 */
        .sg-offcanvas {
            background: linear-gradient(180deg, var(--sg-primary-dark) 0%, var(--sg-primary) 100%);
            color: #fff;
        }
        .sg-offcanvas .offcanvas-header {
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .sg-offcanvas .offcanvas-title {
            color: #fff;
            font-weight: 700;
        }
        .sg-offcanvas .btn-close {
            filter: invert(1);
        }
        .sg-offcanvas .offcanvas-body {
            padding: 12px 16px;
        }
        .sg-offcanvas-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 13px 16px;
            border-radius: var(--sg-radius-sm);
            color: rgba(255,255,255,0.8);
            font-size: 1rem;
            font-weight: 500;
            transition: all var(--sg-transition);
        }
        .sg-offcanvas-nav a:hover {
            background: rgba(255,255,255,0.08);
            color: #fff;
        }
        .sg-offcanvas-nav a.active {
            background: rgba(255,255,255,0.13);
            color: #fff;
            font-weight: 600;
            border-left: 3px solid var(--sg-accent);
        }
        .sg-offcanvas-nav a i {
            font-size: 1.2rem;
            width: 24px;
            text-align: center;
        }

        /* ========== 分类Banner ========== */
        .sg-cat-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 60px 40px;
            display: flex;
            align-items: center;
            min-height: 280px;
        }
        .sg-cat-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,43,69,0.88) 0%, rgba(13,43,69,0.65) 50%, rgba(26,63,96,0.55) 100%);
            z-index: 0;
        }
        .sg-cat-banner-content {
            position: relative;
            z-index: 1;
            max-width: 700px;
        }
        .sg-cat-banner .sg-cat-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--sg-accent);
            color: #fff;
            font-size: 0.82rem;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }
        .sg-cat-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .sg-cat-banner p {
            font-size: 1.08rem;
            color: rgba(255,255,255,0.8);
            margin: 0;
            max-width: 520px;
            line-height: 1.7;
        }
        .sg-cat-banner .sg-banner-stats {
            display: flex;
            gap: 28px;
            margin-top: 20px;
        }
        .sg-cat-banner .sg-banner-stat {
            display: flex;
            flex-direction: column;
        }
        .sg-cat-banner .sg-banner-stat .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--sg-accent-light);
        }
        .sg-cat-banner .sg-banner-stat .stat-label {
            font-size: 0.78rem;
            color: rgba(255,255,255,0.6);
        }

        /* ========== 通用容器 ========== */
        .sg-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 28px;
        }
        .sg-section {
            padding: 48px 0;
        }
        .sg-section-header {
            margin-bottom: 32px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .sg-section-header h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--sg-text);
            position: relative;
            padding-left: 16px;
        }
        .sg-section-header h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            background: var(--sg-accent);
            border-radius: 2px;
        }
        .sg-section-header .sg-section-more {
            font-size: 0.88rem;
            color: var(--sg-accent);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: color var(--sg-transition);
        }
        .sg-section-header .sg-section-more:hover {
            color: var(--sg-accent-dark);
        }

        /* ========== 筛选标签栏 ========== */
        .sg-filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            padding: 8px 0;
        }
        .sg-filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--sg-transition);
            border: 1.5px solid var(--sg-border);
            background: var(--sg-surface);
            color: var(--sg-text-secondary);
            white-space: nowrap;
        }
        .sg-filter-tag:hover {
            border-color: var(--sg-accent);
            color: var(--sg-accent);
            background: rgba(200,150,62,0.05);
        }
        .sg-filter-tag.active {
            background: var(--sg-accent);
            color: #fff;
            border-color: var(--sg-accent);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(200,150,62,0.3);
        }

        /* ========== 新闻卡片网格 ========== */
        .sg-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }
        .sg-news-card {
            background: var(--sg-surface);
            border-radius: var(--sg-radius-lg);
            overflow: hidden;
            box-shadow: var(--sg-shadow-sm);
            transition: all var(--sg-transition);
            display: flex;
            flex-direction: column;
            height: 100%;
            border: 1px solid var(--sg-border-light);
        }
        .sg-news-card:hover {
            box-shadow: var(--sg-shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .sg-news-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--sg-bg-alt);
        }
        .sg-news-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .sg-news-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .sg-news-card .card-img-wrap .card-hot-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: linear-gradient(135deg, #e53e3e, #c53030);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            gap: 3px;
            letter-spacing: 0.03em;
            box-shadow: 0 2px 8px rgba(229,62,62,0.35);
            animation: sg-pulse-dot 2s infinite;
        }
        @keyframes sg-pulse-dot {
            0%, 100% { box-shadow: 0 2px 8px rgba(229,62,62,0.35); }
            50% { box-shadow: 0 4px 16px rgba(229,62,62,0.55); }
        }
        .sg-news-card .card-img-wrap .card-rank-num {
            position: absolute;
            top: 12px;
            left: 12px;
            width: 32px;
            height: 32px;
            background: rgba(0,0,0,0.7);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 800;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            backdrop-filter: blur(4px);
        }
        .sg-news-card .card-body-wrap {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .sg-news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.75rem;
            color: var(--sg-text-muted);
            margin-bottom: 8px;
        }
        .sg-news-card .card-meta .meta-tag {
            background: rgba(200,150,62,0.1);
            color: var(--sg-accent-dark);
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 0.7rem;
        }
        .sg-news-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--sg-text);
            margin-bottom: 8px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sg-news-card .card-desc {
            font-size: 0.85rem;
            color: var(--sg-text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .sg-news-card .card-footer-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            padding-top: 12px;
            border-top: 1px solid var(--sg-border-light);
            font-size: 0.75rem;
            color: var(--sg-text-muted);
        }
        .sg-news-card .card-footer-row .read-more {
            color: var(--sg-accent);
            font-weight: 600;
            font-size: 0.8rem;
            display: flex;
            align-items: center;
            gap: 3px;
            transition: gap var(--sg-transition);
        }
        .sg-news-card:hover .card-footer-row .read-more {
            gap: 7px;
        }

        /* ========== 热门排行侧栏区块 ========== */
        .sg-hot-rank-list {
            background: var(--sg-surface);
            border-radius: var(--sg-radius-lg);
            padding: 24px;
            box-shadow: var(--sg-shadow-sm);
            border: 1px solid var(--sg-border-light);
        }
        .sg-hot-rank-list h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sg-hot-rank-list h3 i {
            color: #e53e3e;
            font-size: 1.2rem;
        }
        .sg-rank-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--sg-border-light);
            transition: all var(--sg-transition);
        }
        .sg-rank-item:last-child {
            border-bottom: none;
        }
        .sg-rank-item:hover {
            background: rgba(200,150,62,0.03);
            margin: 0 -8px;
            padding-left: 8px;
            padding-right: 8px;
            border-radius: 8px;
        }
        .sg-rank-item .rank-num {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.85rem;
            flex-shrink: 0;
            color: #fff;
        }
        .sg-rank-item .rank-num.top1 {
            background: linear-gradient(135deg, #e53e3e, #c53030);
        }
        .sg-rank-item .rank-num.top2 {
            background: linear-gradient(135deg, #ed8936, #dd6b20);
        }
        .sg-rank-item .rank-num.top3 {
            background: linear-gradient(135deg, #ecc94b, #d69e2e);
        }
        .sg-rank-item .rank-num.normal {
            background: #a0aec0;
        }
        .sg-rank-item .rank-info {
            flex: 1;
            min-width: 0;
        }
        .sg-rank-item .rank-title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--sg-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .sg-rank-item .rank-meta {
            font-size: 0.7rem;
            color: var(--sg-text-muted);
            margin-top: 2px;
        }

        /* ========== CTA 订阅区块 ========== */
        .sg-cta-block {
            background: linear-gradient(135deg, var(--sg-primary) 0%, var(--sg-primary-light) 100%);
            border-radius: var(--sg-radius-xl);
            padding: 44px 40px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: var(--sg-shadow-lg);
        }
        .sg-cta-block .cta-text h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .sg-cta-block .cta-text p {
            color: rgba(255,255,255,0.7);
            margin: 0;
            font-size: 0.9rem;
        }
        .sg-cta-block .cta-action {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
        }
        .sg-btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 11px 24px;
            border-radius: 25px;
            font-weight: 600;
            font-size: 0.92rem;
            transition: all var(--sg-transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }
        .sg-btn-accent {
            background: var(--sg-accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(200,150,62,0.35);
        }
        .sg-btn-accent:hover {
            background: var(--sg-accent-light);
            box-shadow: 0 6px 20px rgba(200,150,62,0.45);
            transform: translateY(-1px);
            color: #fff;
        }
        .sg-btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.4);
        }
        .sg-btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            color: #fff;
        }

        /* ========== 页脚 ========== */
        .sg-footer {
            background: var(--sg-primary-dark);
            color: rgba(255,255,255,0.75);
            padding: 48px 0 0;
            margin-top: auto;
        }
        .sg-footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .sg-footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .sg-footer-desc {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.5);
        }
        .sg-footer-links h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .sg-footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .sg-footer-links ul li {
            font-size: 0.85rem;
        }
        .sg-footer-links ul li a {
            color: rgba(255,255,255,0.55);
            transition: color var(--sg-transition);
        }
        .sg-footer-links ul li a:hover {
            color: var(--sg-accent-light);
        }
        .sg-footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.75rem;
            color: rgba(255,255,255,0.35);
        }

        /* ========== 响应式断点 ========== */
        @media (max-width: 1199.98px) {
            .sg-news-grid {
                grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
                gap: 20px;
            }
            .sg-cat-banner {
                padding: 48px 28px;
                min-height: 240px;
            }
            .sg-cat-banner h1 {
                font-size: 2rem;
            }
            .sg-section {
                padding: 36px 0;
            }
        }
        @media (max-width: 991.98px) {
            .sg-sidebar {
                display: none;
            }
            .sg-main-area {
                margin-left: 0;
                padding-top: var(--sg-topbar-height);
            }
            .sg-topbar {
                display: flex;
            }
            .sg-cat-banner {
                padding: 36px 20px;
                min-height: 200px;
            }
            .sg-cat-banner h1 {
                font-size: 1.7rem;
            }
            .sg-cat-banner p {
                font-size: 0.95rem;
            }
            .sg-news-grid {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
                gap: 16px;
            }
            .sg-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .sg-cta-block {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
            .sg-cta-block .cta-action {
                justify-content: center;
            }
            .sg-section-header h2 {
                font-size: 1.3rem;
            }
            .sg-container {
                padding: 0 18px;
            }
        }
        @media (max-width: 575.98px) {
            .sg-cat-banner {
                padding: 28px 16px;
                min-height: 180px;
            }
            .sg-cat-banner h1 {
                font-size: 1.35rem;
            }
            .sg-cat-banner .sg-banner-stats {
                gap: 16px;
                flex-wrap: wrap;
            }
            .sg-cat-banner .sg-banner-stats .stat-num {
                font-size: 1.3rem;
            }
            .sg-news-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .sg-footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .sg-cta-block {
                padding: 24px 18px;
                border-radius: var(--sg-radius-lg);
            }
            .sg-cta-block .cta-text h3 {
                font-size: 1.15rem;
            }
            .sg-cta-block .cta-action {
                flex-direction: column;
                width: 100%;
            }
            .sg-btn {
                justify-content: center;
                width: 100%;
            }
            .sg-filter-bar {
                gap: 6px;
            }
            .sg-filter-tag {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .sg-section-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .sg-section-header h2 {
                font-size: 1.2rem;
            }
            .sg-container {
                padding: 0 14px;
            }
            .sg-section {
                padding: 28px 0;
            }
        }