/* roulang page: index */
:root {
            --color-primary: #0f1f35;
            --color-primary-light: #1a3050;
            --color-accent: #c9a050;
            --color-accent-light: #dbb860;
            --color-accent-dark: #a88338;
            --color-bg: #ffffff;
            --color-bg-light: #f7f8fa;
            --color-bg-alt: #eef1f5;
            --color-text: #1a1a1a;
            --color-text-soft: #4a4a4a;
            --color-text-muted: #7a7a7a;
            --color-border: #e2e5ea;
            --color-border-light: #eef0f4;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --glass-bg: rgba(255, 255, 255, 0.82);
            --glass-blur: blur(18px);
            --glass-border: rgba(255, 255, 255, 0.5);
            --glass-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            --nav-height: 70px;
        }

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

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

        body {
            font-family: var(--font-body);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.7;
            overflow-x: hidden;
            min-width: 320px;
            padding-top: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
        }

        /* ---------- 容器微调 ---------- */
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ---------- 导航 ---------- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth), backdrop-filter var(--transition-smooth);
            background: var(--glass-bg);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border-bottom: 1px solid var(--glass-border);
            box-shadow: var(--glass-shadow);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.10);
            border-bottom: 1px solid rgba(0, 0, 0, 0.07);
        }
        .site-header .navbar {
            height: var(--nav-height);
            padding: 0;
        }
        .site-header .navbar-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: 0.02em;
            color: var(--color-primary) !important;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }
        .site-header .navbar-brand:hover {
            color: var(--color-accent-dark) !important;
        }
        .site-header .navbar-brand .brand-icon {
            display: inline-block;
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
            border-radius: 8px;
            text-align: center;
            line-height: 34px;
            color: #fff;
            font-size: 0.9rem;
            margin-right: 8px;
            vertical-align: middle;
        }
        .site-header .nav-link {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-soft) !important;
            padding: 0.5rem 1.05rem !important;
            border-radius: 6px;
            transition: color var(--transition-fast), background var(--transition-fast);
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .site-header .nav-link:hover {
            color: var(--color-accent-dark) !important;
            background: rgba(201, 160, 80, 0.07);
        }
        .site-header .nav-link.active {
            color: var(--color-accent-dark) !important;
            font-weight: 600;
            background: rgba(201, 160, 80, 0.10);
        }
        .site-header .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .navbar-toggler {
            border: none;
            padding: 6px 8px;
            color: var(--color-primary);
            background: transparent;
            box-shadow: none;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(201, 160, 80, 0.25);
        }
        .navbar-toggler .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15,31,53,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        @media (max-width: 991px) {
            .site-header .navbar-collapse {
                background: rgba(255, 255, 255, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                padding: 12px 20px 16px;
                margin-top: 6px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--color-border-light);
            }
            .site-header .nav-link {
                padding: 0.65rem 1rem !important;
                font-size: 0.95rem;
            }
            .site-header .nav-link.active::after {
                bottom: 0;
                left: 20px;
                transform: none;
                width: 24px;
                height: 2px;
            }
        }

        /* ---------- 板块间距 ---------- */
        .section {
            padding: 72px 0;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-lg {
            padding: 96px 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-lg {
                padding: 64px 0;
            }
            .section-sm {
                padding: 32px 0;
            }
        }

        /* ---------- Hero ---------- */
        .hero-section {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-position: center 40%;
            margin-top: 0;
            padding-top: var(--nav-height);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 31, 53, 0.82) 0%, rgba(15, 31, 53, 0.70) 50%, rgba(10, 22, 38, 0.85) 100%);
            z-index: 1;
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #ffffff;
            max-width: 800px;
            padding: 40px 24px;
        }
        .hero-section .hero-badge {
            display: inline-block;
            background: rgba(201, 160, 80, 0.22);
            border: 1px solid rgba(201, 160, 80, 0.45);
            color: #f0d78c;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }
        .hero-section h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
            color: #ffffff;
        }
        .hero-section .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-section .btn-hero {
            display: inline-block;
            background: var(--color-accent);
            color: #0f1f35 !important;
            font-weight: 600;
            padding: 13px 34px;
            border-radius: 30px;
            font-size: 1rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            border: none;
            box-shadow: 0 4px 18px rgba(201, 160, 80, 0.35);
        }
        .hero-section .btn-hero:hover {
            background: var(--color-accent-light);
            box-shadow: 0 8px 28px rgba(201, 160, 80, 0.50);
            transform: translateY(-2px);
            color: #0f1f35 !important;
        }
        .hero-section .btn-hero-outline {
            display: inline-block;
            background: transparent;
            color: #ffffff !important;
            font-weight: 500;
            padding: 12px 30px;
            border-radius: 30px;
            font-size: 1rem;
            letter-spacing: 0.03em;
            border: 1.5px solid rgba(255, 255, 255, 0.55);
            transition: all var(--transition-smooth);
            margin-left: 14px;
        }
        .hero-section .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.85);
            color: #ffffff !important;
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: 500px;
            }
            .hero-section h1 {
                font-size: 1.9rem;
            }
            .hero-section .hero-subtitle {
                font-size: 1rem;
            }
            .hero-section .btn-hero-outline {
                margin-left: 8px;
            }
        }
        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 1.55rem;
            }
            .hero-section .btn-hero {
                display: block;
                margin-bottom: 12px;
            }
            .hero-section .btn-hero-outline {
                display: block;
                margin-left: 0;
            }
        }

        /* ---------- 通用标题 ---------- */
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent-dark);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 10px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
            letter-spacing: 0.015em;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            max-width: 640px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.55rem;
            }
        }

        /* ---------- 品牌介绍板块 ---------- */
        .brand-intro-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 44px 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            line-height: 1.9;
            font-size: 1.02rem;
            color: var(--color-text-soft);
            position: relative;
        }
        .brand-intro-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 40px;
            right: 40px;
            height: 3px;
            background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
            border-radius: 0 0 4px 4px;
        }
        .brand-intro-card .intro-highlight {
            color: var(--color-accent-dark);
            font-weight: 600;
        }

        /* ---------- 数据统计卡片 ---------- */
        .stat-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-accent);
        }
        .stat-card .stat-icon {
            font-size: 2.2rem;
            color: var(--color-accent);
            margin-bottom: 14px;
            display: block;
        }
        .stat-card .stat-number {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* ---------- 核心优势卡片 ---------- */
        .advantage-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            height: 100%;
            text-align: center;
        }
        .advantage-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
            border-color: var(--color-accent);
        }
        .advantage-card .adv-icon-wrap {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(201, 160, 80, 0.12) 0%, rgba(201, 160, 80, 0.22) 100%);
            margin-bottom: 18px;
            font-size: 1.6rem;
            color: var(--color-accent-dark);
        }
        .advantage-card h4 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .advantage-card p {
            font-size: 0.93rem;
            color: var(--color-text-muted);
            line-height: 1.65;
            margin: 0;
        }

        /* ---------- 品牌故事区块 ---------- */
        .story-block {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .story-block .story-image {
            flex: 1 1 380px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .story-block .story-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
            transition: transform var(--transition-smooth);
        }
        .story-block .story-image:hover img {
            transform: scale(1.03);
        }
        .story-block .story-text {
            flex: 1 1 380px;
        }
        .story-block .story-text h3 {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 16px;
        }
        .story-block .story-text p {
            font-size: 1rem;
            color: var(--color-text-soft);
            line-height: 1.85;
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .story-block {
                gap: 28px;
            }
            .story-block .story-text h3 {
                font-size: 1.35rem;
            }
        }

        /* ---------- 焦点赛事卡片 ---------- */
        .match-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            height: 100%;
        }
        .match-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .match-card .match-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
        }
        .match-card .match-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .match-card:hover .match-img-wrap img {
            transform: scale(1.06);
        }
        .match-card .match-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--color-accent);
            color: #0f1f35;
            font-weight: 600;
            font-size: 0.78rem;
            padding: 4px 12px;
            border-radius: 14px;
            letter-spacing: 0.03em;
        }
        .match-card .match-body {
            padding: 20px 18px;
        }
        .match-card .match-body h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .match-card .match-body p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.55;
        }

        /* ---------- 合作伙伴 ---------- */
        .partner-strip {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 32px 40px;
            padding: 20px 0;
        }
        .partner-strip .partner-item {
            flex: 0 0 auto;
            opacity: 0.72;
            transition: opacity var(--transition-fast), transform var(--transition-fast);
            text-align: center;
        }
        .partner-strip .partner-item:hover {
            opacity: 1;
            transform: translateY(-2px);
        }
        .partner-strip .partner-item img {
            width: 90px;
            height: 50px;
            object-fit: contain;
            border-radius: 6px;
        }
        .partner-strip .partner-item span {
            display: block;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* ---------- 用户口碑 ---------- */
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            height: 100%;
            position: relative;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
        }
        .testimonial-card .quote-icon {
            font-size: 2rem;
            color: var(--color-accent);
            opacity: 0.5;
            margin-bottom: 10px;
            display: block;
        }
        .testimonial-card p {
            font-size: 0.95rem;
            color: var(--color-text-soft);
            line-height: 1.7;
            margin-bottom: 14px;
            font-style: italic;
        }
        .testimonial-card .author {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
        }
        .testimonial-card .author-role {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        /* ---------- CTA 板块 ---------- */
        .cta-section {
            background: var(--color-primary);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-xl);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(201, 160, 80, 0.10);
            z-index: 0;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(201, 160, 80, 0.08);
            z-index: 0;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-section h3 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-cta {
            display: inline-block;
            background: var(--color-accent);
            color: #0f1f35 !important;
            font-weight: 600;
            padding: 14px 38px;
            border-radius: 30px;
            font-size: 1rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            border: none;
            box-shadow: 0 6px 22px rgba(201, 160, 80, 0.40);
        }
        .cta-section .btn-cta:hover {
            background: var(--color-accent-light);
            box-shadow: 0 10px 30px rgba(201, 160, 80, 0.55);
            transform: translateY(-3px);
            color: #0f1f35 !important;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 40px 24px;
                border-radius: var(--radius-lg);
            }
            .cta-section h3 {
                font-size: 1.4rem;
            }
        }

        /* ---------- FAQ ---------- */
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: box-shadow var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-item .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            line-height: 1.4;
            transition: color var(--transition-fast);
        }
        .faq-item .faq-question:hover {
            color: var(--color-accent-dark);
        }
        .faq-item .faq-question .faq-arrow {
            flex-shrink: 0;
            transition: transform var(--transition-smooth);
            color: var(--color-accent);
            font-size: 0.9rem;
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 22px;
            line-height: 1.75;
            color: var(--color-text-soft);
            font-size: 0.93rem;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 22px 18px;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        /* ---------- 新闻资讯 ---------- */
        .news-card {
            display: flex;
            gap: 18px;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 18px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            align-items: flex-start;
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .news-card .news-thumb {
            width: 120px;
            height: 80px;
            flex-shrink: 0;
            border-radius: 8px;
            overflow: hidden;
        }
        .news-card .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-card .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-card .news-date {
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-bottom: 4px;
        }
        .news-card h5 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .news-card p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .btn-read-more {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-accent-dark);
            margin-top: 6px;
            transition: color var(--transition-fast);
        }
        .news-card .btn-read-more:hover {
            color: var(--color-accent);
        }
        @media (max-width: 520px) {
            .news-card {
                flex-direction: column;
            }
            .news-card .news-thumb {
                width: 100%;
                height: 160px;
            }
        }

        /* ---------- 页脚 ---------- */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 28px;
        }
        .site-footer .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.2rem;
            color: #ffffff;
            margin-bottom: 8px;
            display: block;
        }
        .site-footer .footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            max-width: 320px;
            color: rgba(255, 255, 255, 0.6);
        }
        .site-footer h6 {
            font-weight: 600;
            font-size: 0.9rem;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 6px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-links a:hover {
            color: var(--color-accent-light);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 32px;
            padding-top: 20px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
            text-align: center;
        }

        /* ---------- 按钮通用 ---------- */
        .btn-outline-gold {
            border: 1.5px solid var(--color-accent);
            color: var(--color-accent-dark);
            font-weight: 500;
            padding: 8px 20px;
            border-radius: 24px;
            transition: all var(--transition-fast);
            background: transparent;
            font-size: 0.9rem;
        }
        .btn-outline-gold:hover {
            background: var(--color-accent);
            color: #0f1f35;
            border-color: var(--color-accent);
        }

        /* ---------- 标签 ---------- */
        .tag-badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 16px;
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.03em;
        }
        .tag-badge.tag-gold {
            background: rgba(201, 160, 80, 0.12);
            color: var(--color-accent-dark);
        }
        .tag-badge.tag-blue {
            background: rgba(15, 31, 53, 0.07);
            color: var(--color-primary);
        }

        /* ---------- 分隔 ---------- */
        .divider-gold {
            width: 50px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 16px 0;
        }

/* roulang page: category3 */
:root {
            --color-primary: #1a3c5e;
            --color-primary-dark: #0f2a44;
            --color-primary-light: #2a5580;
            --color-accent: #c8a45c;
            --color-accent-light: #d9bc7a;
            --color-accent-dark: #a8843e;
            --color-bg: #f7f8fa;
            --color-surface: #ffffff;
            --color-text: #1e1e1e;
            --color-text-soft: #5a6070;
            --color-text-muted: #8b919e;
            --color-border: #e2e5ea;
            --color-border-light: #eef0f4;
            --color-success: #2e7d5b;
            --color-warning: #d4851e;
            --color-danger: #c0392b;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --nav-height: 72px;
            --section-gap: 80px;
            --section-gap-sm: 48px;
        }

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1280px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.78);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(200, 200, 210, 0.25);
            box-shadow: 0 1px 12px rgba(0, 0, 0, 0.05);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            box-shadow: var(--shadow-md);
            border-bottom-color: rgba(180, 185, 195, 0.35);
        }
        .site-header .navbar {
            padding-top: 10px;
            padding-bottom: 10px;
            min-height: var(--nav-height);
        }
        .navbar-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-primary) !important;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 9px;
            transition: color var(--transition-fast);
        }
        .navbar-brand:hover {
            color: var(--color-primary-dark) !important;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 2px 10px rgba(26, 60, 94, 0.25);
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-soft) !important;
            padding: 8px 16px !important;
            border-radius: 24px;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.01em;
        }
        .navbar-nav .nav-link:hover {
            color: var(--color-primary) !important;
            background: rgba(26, 60, 94, 0.05);
        }
        .navbar-nav .nav-link.active {
            color: var(--color-accent-dark) !important;
            background: rgba(200, 164, 92, 0.10);
            font-weight: 600;
        }
        .navbar-toggler {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 6px 10px;
            box-shadow: none;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(26, 60, 94, 0.12);
            outline: none;
        }
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(255, 255, 255, 0.97);
                border-radius: var(--radius-md);
                padding: 12px 8px;
                margin-top: 8px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--color-border-light);
            }
            .navbar-nav .nav-link {
                padding: 10px 16px !important;
                border-radius: var(--radius-sm);
            }
            .navbar-nav {
                gap: 2px;
            }
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            margin-top: var(--nav-height);
            min-height: 340px;
            display: flex;
            align-items: center;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 40%;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(15, 42, 68, 0.82) 0%, rgba(26, 60, 94, 0.70) 45%, rgba(42, 85, 128, 0.45) 100%);
            z-index: 1;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(to top, rgba(247, 248, 250, 0.25) 0%, transparent 100%);
            z-index: 2;
            pointer-events: none;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 3;
            padding: 60px 0 50px;
            color: #ffffff;
        }
        .banner-breadcrumb {
            display: flex;
            gap: 6px;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .banner-breadcrumb a:hover {
            color: var(--color-accent-light);
        }
        .banner-breadcrumb .separator {
            font-size: 0.7rem;
            opacity: 0.55;
        }
        .page-banner .banner-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2.4rem;
            letter-spacing: 0.02em;
            margin-bottom: 10px;
            line-height: 1.25;
        }
        .page-banner .banner-subtitle {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .page-banner {
                min-height: 260px;
            }
            .page-banner .banner-title {
                font-size: 1.7rem;
            }
            .page-banner .banner-subtitle {
                font-size: 0.9rem;
            }
            .page-banner .banner-content {
                padding: 40px 0 36px;
            }
        }

        /* ========== SECTION COMMONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-gap-sm) 0;
            }
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-accent-dark);
            background: rgba(200, 164, 92, 0.10);
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .section-header .section-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--color-primary-dark);
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }
        .section-header .section-desc {
            color: var(--color-text-soft);
            max-width: 620px;
            margin: 0 auto;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* ========== CARDS ========== */
        .card-custom {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .card-custom .card-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .card-custom .card-icon.icon-blue {
            background: rgba(26, 60, 94, 0.08);
            color: var(--color-primary);
        }
        .card-custom .card-icon.icon-gold {
            background: rgba(200, 164, 92, 0.12);
            color: var(--color-accent-dark);
        }
        .card-custom .card-icon.icon-green {
            background: rgba(46, 125, 91, 0.08);
            color: var(--color-success);
        }
        .card-custom .card-title {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 1.08rem;
            margin-bottom: 8px;
            color: var(--color-primary-dark);
            letter-spacing: 0.01em;
        }
        .card-custom .card-text {
            color: var(--color-text-soft);
            font-size: 0.9rem;
            line-height: 1.65;
            flex-grow: 1;
        }

        /* ========== INFO ROW ========== */
        .info-row-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base);
            height: 100%;
        }
        .info-row-card:hover {
            box-shadow: var(--shadow-md);
        }
        .info-row-card .info-number {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2.6rem;
            color: var(--color-accent);
            line-height: 1;
            margin-bottom: 8px;
        }
        .info-row-card .info-label {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-primary-dark);
            margin-bottom: 6px;
        }
        .info-row-card .info-desc {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.5;
        }

        /* ========== CONTENT BLOCK ========== */
        .content-block {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            padding: 32px 28px;
            box-shadow: var(--shadow-xs);
            margin-bottom: 24px;
        }
        .content-block h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-primary-dark);
            margin-bottom: 12px;
        }
        .content-block p {
            color: var(--color-text-soft);
            line-height: 1.75;
            margin-bottom: 12px;
            font-size: 0.95rem;
        }
        .content-block p:last-child {
            margin-bottom: 0;
        }
        .content-block .highlight-tag {
            display: inline-block;
            background: rgba(200, 164, 92, 0.10);
            color: var(--color-accent-dark);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 3px 10px;
            border-radius: 14px;
            margin-right: 6px;
            margin-bottom: 4px;
        }

        /* ========== TABLE STYLE ========== */
        .table-custom-wrap {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            background: var(--color-surface);
        }
        .table-custom {
            margin-bottom: 0;
            font-size: 0.9rem;
            width: 100%;
            border-collapse: collapse;
        }
        .table-custom thead th {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.85rem;
            padding: 12px 14px;
            white-space: nowrap;
            border: none;
            letter-spacing: 0.02em;
        }
        .table-custom tbody td {
            padding: 11px 14px;
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-text-soft);
            vertical-align: middle;
        }
        .table-custom tbody tr:last-child td {
            border-bottom: none;
        }
        .table-custom tbody tr:hover {
            background: rgba(26, 60, 94, 0.02);
        }

        /* ========== FAQ ========== */
        .faq-section .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-xs);
            background: var(--color-surface);
        }
        .faq-section .accordion-button {
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-primary-dark);
            background: transparent;
            padding: 16px 20px;
            box-shadow: none !important;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
        }
        .faq-section .accordion-button:not(.collapsed) {
            background: rgba(26, 60, 94, 0.03);
            color: var(--color-primary);
        }
        .faq-section .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(26, 60, 94, 0.08) !important;
        }
        .faq-section .accordion-body {
            padding: 6px 20px 20px;
            color: var(--color-text-soft);
            line-height: 1.7;
            font-size: 0.92rem;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(145deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.6rem;
            position: relative;
            z-index: 2;
            margin-bottom: 10px;
        }
        .cta-section p {
            position: relative;
            z-index: 2;
            opacity: 0.88;
            max-width: 500px;
            margin: 0 auto 22px;
            font-size: 0.95rem;
        }
        .cta-section .btn-cta {
            position: relative;
            z-index: 2;
            background: var(--color-accent);
            color: #fff;
            border: none;
            font-weight: 600;
            padding: 12px 30px;
            border-radius: 28px;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(200, 164, 92, 0.35);
        }
        .cta-section .btn-cta:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 164, 92, 0.45);
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1a1f28;
            color: #bcc3cd;
            padding: 48px 0 0;
            margin-top: var(--section-gap);
            font-size: 0.9rem;
        }
        .site-footer .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.2rem;
            color: #ffffff;
            display: block;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-desc {
            color: #9ca3b0;
            line-height: 1.65;
            font-size: 0.88rem;
            max-width: 320px;
        }
        .site-footer h6 {
            font-weight: 600;
            font-size: 0.95rem;
            color: #e0e4ea;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 8px;
        }
        .site-footer .footer-links a {
            color: #9ca3b0;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-links a:hover {
            color: var(--color-accent-light);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 18px 0;
            margin-top: 36px;
            text-align: center;
            font-size: 0.82rem;
            color: #6b7280;
            letter-spacing: 0.01em;
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 32px 0 0;
            }
            .site-footer .footer-bottom {
                margin-top: 24px;
            }
        }

        /* ========== UTILITY ========== */
        .text-accent {
            color: var(--color-accent-dark) !important;
        }
        .bg-soft-primary {
            background: rgba(26, 60, 94, 0.04) !important;
        }
        .rounded-xl {
            border-radius: var(--radius-xl) !important;
        }
        .gap-section {
            margin-top: var(--section-gap);
        }
        @media (max-width: 768px) {
            .gap-section {
                margin-top: var(--section-gap-sm);
            }
        }

/* roulang page: category2 */
:root {
            --brand-primary: #0f2b46;
            --brand-secondary: #1a3f5c;
            --brand-accent: #c9a050;
            --brand-accent-light: #e0c880;
            --brand-accent-dark: #a07828;
            --text-primary: #1a1a1a;
            --text-secondary: #4a4a4a;
            --text-muted: #6b7280;
            --text-on-dark: #e8e8e8;
            --bg-page: #f7f6f3;
            --bg-white: #ffffff;
            --bg-light: #f0ede7;
            --bg-card: #ffffff;
            --bg-dark-section: #0f2b46;
            --bg-accent-soft: #faf7f0;
            --border-color: #e0dcd4;
            --border-light: #ece8df;
            --shadow-sm: 0 1px 3px rgba(15, 43, 70, 0.06);
            --shadow-md: 0 4px 16px rgba(15, 43, 70, 0.08);
            --shadow-lg: 0 8px 32px rgba(15, 43, 70, 0.11);
            --shadow-xl: 0 16px 48px rgba(15, 43, 70, 0.14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50px;
            --font-display: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-body: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --nav-glass-bg: rgba(255, 255, 255, 0.78);
            --nav-glass-border: rgba(255, 255, 255, 0.45);
            --nav-glass-shadow: 0 2px 20px rgba(15, 43, 70, 0.07);
            --nav-blur: 16px;
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-page);
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        main {
            flex: 1 0 auto;
        }

        a {
            color: var(--brand-secondary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-accent-dark);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 3px solid var(--brand-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--brand-accent);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1280px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--nav-glass-bg);
            backdrop-filter: blur(var(--nav-blur));
            -webkit-backdrop-filter: blur(var(--nav-blur));
            border-bottom: 1px solid var(--nav-glass-border);
            box-shadow: var(--nav-glass-shadow);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.94);
            box-shadow: var(--shadow-md);
        }
        .site-header .navbar {
            padding: 0.65rem 0;
            min-height: 60px;
        }
        .site-header .navbar-brand {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            gap: 9px;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .site-header .navbar-brand:hover {
            color: var(--brand-accent-dark);
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
            color: var(--brand-accent);
            font-size: 1.05rem;
            flex-shrink: 0;
        }
        .site-header .nav-link {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            padding: 0.5rem 1rem;
            border-radius: var(--radius-full);
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .site-header .nav-link:hover {
            color: var(--brand-primary);
            background: rgba(15, 43, 70, 0.04);
        }
        .site-header .nav-link.active {
            color: #ffffff;
            background: var(--brand-primary);
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(15, 43, 70, 0.22);
        }
        .site-header .nav-link.active:hover {
            color: #ffffff;
            background: var(--brand-secondary);
        }
        .navbar-toggler {
            border: 1.5px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 6px 10px;
            transition: all var(--transition-fast);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(201, 160, 80, 0.25);
            border-color: var(--brand-accent);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15,43,70,0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                border-radius: var(--radius-md);
                margin-top: 10px;
                padding: 0.8rem 1rem;
                border: 1px solid var(--border-light);
                box-shadow: var(--shadow-lg);
            }
            .site-header .nav-link {
                padding: 0.65rem 1rem;
                border-radius: var(--radius-sm);
                margin-bottom: 2px;
            }
            .site-header .nav-link.active {
                border-radius: var(--radius-sm);
            }
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            margin-top: 76px;
            padding: 70px 0 60px;
            background: linear-gradient(170deg, #0f2b46 0%, #1a3f5c 40%, #1e4d6e 100%);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 40%;
            background-repeat: no-repeat;
            color: #ffffff;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 43, 70, 0.78) 0%, rgba(15, 43, 70, 0.88) 100%);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner .banner-tag {
            display: inline-block;
            background: rgba(201, 160, 80, 0.25);
            border: 1px solid rgba(201, 160, 80, 0.5);
            color: var(--brand-accent-light);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 6px 18px;
            border-radius: var(--radius-full);
            letter-spacing: 0.04em;
            margin-bottom: 18px;
            backdrop-filter: blur(4px);
        }
        .page-banner h1 {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 2.6rem;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
        }
        .page-banner .banner-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .breadcrumb-nav {
            display: flex;
            justify-content: center;
            gap: 6px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.8);
        }
        .breadcrumb-nav a:hover {
            color: var(--brand-accent-light);
        }
        .breadcrumb-nav .separator {
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 50px 0 40px;
                margin-top: 64px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner .banner-subtitle {
                font-size: 1rem;
            }
        }

        /* ========== SECTION SPACING ========== */
        .section {
            padding: 64px 0;
        }
        .section-sm {
            padding: 44px 0;
        }
        .section-lg {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 44px 0;
            }
            .section-lg {
                padding: 54px 0;
            }
        }

        /* ========== SECTION HEADING ========== */
        .section-heading {
            text-align: center;
            margin-bottom: 42px;
        }
        .section-heading .heading-tag {
            display: inline-block;
            font-weight: 600;
            font-size: 0.82rem;
            color: var(--brand-accent-dark);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 8px;
            background: rgba(201, 160, 80, 0.12);
            padding: 4px 14px;
            border-radius: var(--radius-full);
        }
        .section-heading h2 {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 2rem;
            color: var(--brand-primary);
            letter-spacing: 0.02em;
            margin-bottom: 10px;
        }
        .section-heading p {
            color: var(--text-muted);
            max-width: 620px;
            margin: 0 auto;
            font-size: 0.98rem;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-heading h2 {
                font-size: 1.6rem;
            }
        }

        /* ========== CARDS ========== */
        .card-skill {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-skill:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--brand-accent-light);
        }
        .card-skill .skill-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            background: var(--bg-accent-soft);
            color: var(--brand-accent-dark);
            flex-shrink: 0;
        }
        .card-skill h3 {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--brand-primary);
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }
        .card-skill p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.65;
            margin-bottom: 0;
            flex-grow: 1;
        }
        .card-skill .skill-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--brand-accent-dark);
            margin-top: 14px;
            transition: gap var(--transition-fast);
        }
        .card-skill .skill-link:hover {
            gap: 10px;
            color: var(--brand-accent-dark);
        }
        .card-skill .skill-link i {
            font-size: 0.7rem;
        }

        /* ========== FEATURE BLOCK ========== */
        .feature-block {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .feature-block.reverse {
            flex-direction: row-reverse;
        }
        .feature-block .feature-img-wrap {
            flex: 1 1 420px;
            min-width: 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .feature-block .feature-img-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .feature-block .feature-text {
            flex: 1 1 380px;
            min-width: 260px;
        }
        .feature-block .feature-text h3 {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.55rem;
            color: var(--brand-primary);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .feature-block .feature-text p {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 10px;
            font-size: 0.95rem;
        }
        .feature-block .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .feature-block .feature-list li {
            padding: 8px 0 8px 28px;
            position: relative;
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.6;
        }
        .feature-block .feature-list li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 8px;
            color: var(--brand-accent);
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .feature-block {
                gap: 24px;
            }
            .feature-block .feature-text h3 {
                font-size: 1.35rem;
            }
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            flex: 1 1 180px;
            min-width: 150px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-card .stat-number {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 2.4rem;
            color: var(--brand-primary);
            line-height: 1.1;
            margin-bottom: 4px;
        }
        .stat-card .stat-number span {
            color: var(--brand-accent);
        }
        .stat-card .stat-label {
            font-size: 0.88rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stat-card .stat-number {
                font-size: 1.9rem;
            }
        }

        /* ========== TIPS LIST ========== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
        }
        .tip-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 24px 22px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .tip-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--brand-accent-light);
        }
        .tip-card .tip-num {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--bg-accent-soft);
            color: var(--brand-accent-dark);
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .tip-card h4 {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1rem;
            color: var(--brand-primary);
            margin-bottom: 4px;
        }
        .tip-card p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 520px) {
            .tips-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .accordion.custom-accordion .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            background: var(--bg-card);
        }
        .accordion.custom-accordion .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--brand-primary);
            background: transparent;
            padding: 18px 22px;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
            box-shadow: none !important;
            letter-spacing: 0.01em;
        }
        .accordion.custom-accordion .accordion-button:not(.collapsed) {
            background: var(--bg-accent-soft);
            color: var(--brand-accent-dark);
            border-bottom: 1px solid var(--border-light);
            border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
        }
        .accordion.custom-accordion .accordion-button::after {
            filter: brightness(0.4);
            transition: transform var(--transition-fast);
        }
        .accordion.custom-accordion .accordion-body {
            padding: 18px 22px;
            color: var(--text-secondary);
            line-height: 1.8;
            font-size: 0.93rem;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(160deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
            color: #ffffff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -15%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(201, 160, 80, 0.08);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 2rem;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 550px;
            margin: 0 auto 24px;
            font-size: 0.98rem;
        }
        .btn-cta {
            display: inline-block;
            background: var(--brand-accent);
            color: #ffffff;
            font-weight: 700;
            font-size: 1rem;
            padding: 13px 34px;
            border-radius: var(--radius-full);
            border: none;
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
            box-shadow: 0 4px 18px rgba(201, 160, 80, 0.35);
        }
        .btn-cta:hover {
            background: var(--brand-accent-dark);
            color: #ffffff;
            box-shadow: 0 6px 24px rgba(201, 160, 80, 0.5);
            transform: translateY(-2px);
        }
        .btn-outline-cta {
            display: inline-block;
            background: transparent;
            color: #ffffff;
            font-weight: 600;
            font-size: 1rem;
            padding: 12px 32px;
            border-radius: var(--radius-full);
            border: 2px solid rgba(255, 255, 255, 0.5);
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
            margin-left: 10px;
        }
        .btn-outline-cta:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
        }
        @media (max-width: 520px) {
            .btn-outline-cta {
                margin-left: 0;
                margin-top: 10px;
            }
            .cta-section h2 {
                font-size: 1.55rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--brand-primary);
            color: var(--text-on-dark);
            padding: 48px 0 22px;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .site-footer .footer-brand {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.2rem;
            color: #ffffff;
            display: block;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
            font-size: 0.88rem;
            max-width: 360px;
        }
        .site-footer h6 {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--brand-accent-light);
            letter-spacing: 0.04em;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 7px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-links a:hover {
            color: var(--brand-accent-light);
        }
        .site-footer .footer-bottom {
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 34px;
            padding-top: 18px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.82rem;
            letter-spacing: 0.02em;
        }

        /* ========== UTILITY ========== */
        .bg-soft-light {
            background: var(--bg-light);
        }
        .text-accent {
            color: var(--brand-accent) !important;
        }
        .text-primary-brand {
            color: var(--brand-primary) !important;
        }
        .divider-accent {
            width: 50px;
            height: 3px;
            background: var(--brand-accent);
            border-radius: 2px;
            margin: 0 auto 16px;
        }
        .img-rounded {
            border-radius: var(--radius-lg);
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1a3550;
            --color-primary-light: #1f4060;
            --color-primary-dark: #0f2438;
            --color-accent: #d4a853;
            --color-accent-light: #e8c97a;
            --color-accent-dark: #b8923a;
            --color-hot: #d9413b;
            --color-hot-light: #f05a53;
            --color-bg: #f5f6f8;
            --color-bg-white: #ffffff;
            --color-bg-light: #fafbfc;
            --color-bg-dark: #eef0f3;
            --color-text: #1e293b;
            --color-text-strong: #0f172a;
            --color-text-weak: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-shadow: rgba(15, 23, 42, 0.08);
            --color-shadow-md: rgba(15, 23, 42, 0.12);
            --color-shadow-lg: rgba(15, 23, 42, 0.16);
            --color-glass-bg: rgba(255, 255, 255, 0.78);
            --color-glass-border: rgba(255, 255, 255, 0.55);
            --color-glass-shadow: rgba(15, 23, 42, 0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --shadow-card: 0 2px 12px var(--color-shadow), 0 1px 3px rgba(15, 23, 42, 0.04);
            --shadow-card-hover: 0 8px 28px var(--color-shadow-md), 0 2px 6px rgba(15, 23, 42, 0.06);
            --shadow-nav: 0 1px 0 rgba(255, 255, 255, 0.4), 0 4px 20px var(--color-glass-shadow);
            --shadow-btn: 0 2px 8px rgba(212, 168, 83, 0.3);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --section-gap: 80px;
            --section-gap-sm: 48px;
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: -0.01em;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: var(--font-body);
        }
        input,
        select,
        textarea {
            font-family: var(--font-body);
        }

        :focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .container {
            max-width: var(--container-max);
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 1400px) {
            .container {
                max-width: 1240px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            padding: 6px 0;
            transition: all var(--transition-smooth);
            background: var(--color-glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-glass-border);
            box-shadow: var(--shadow-nav);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 2px 16px var(--color-shadow-md);
            padding: 4px 0;
        }

        .site-header .navbar {
            padding: 0;
            min-height: 56px;
        }
        .site-header .navbar-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-primary) !important;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 9px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .site-header .navbar-brand:hover {
            color: var(--color-accent-dark) !important;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
            border-radius: 50%;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(212, 168, 83, 0.35);
        }
        .site-header .nav-link {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text) !important;
            padding: 8px 16px !important;
            border-radius: var(--radius-full);
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .site-header .nav-link:hover {
            color: var(--color-accent-dark) !important;
            background: rgba(212, 168, 83, 0.08);
        }
        .site-header .nav-link.active {
            color: #fff !important;
            background: var(--color-primary) !important;
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(26, 53, 80, 0.3);
        }
        .site-header .nav-link.active:hover {
            background: var(--color-primary-light) !important;
        }

        .navbar-toggler {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 6px 10px;
            background: rgba(255, 255, 255, 0.7);
            transition: all var(--transition-fast);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(212, 168, 83, 0.25);
            outline: none;
        }
        .navbar-toggler:hover {
            background: rgba(255, 255, 255, 0.9);
            border-color: var(--color-accent);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(26,53,80,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        @media (max-width: 991px) {
            .site-header .navbar-collapse {
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: var(--radius-md);
                padding: 12px 16px;
                margin-top: 8px;
                box-shadow: 0 8px 28px var(--color-shadow-md);
                border: 1px solid var(--color-border-light);
            }
            .site-header .nav-link {
                padding: 10px 16px !important;
                border-radius: var(--radius-sm);
                margin-bottom: 2px;
            }
            .site-header .nav-link.active {
                border-radius: var(--radius-sm);
            }
        }

        @media (max-width: 520px) {
            .site-header .navbar-brand {
                font-size: 1.15rem;
                gap: 6px;
            }
            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            overflow: hidden;
            margin-top: 65px;
        }
        .page-banner .banner-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .page-banner .banner-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.45) saturate(0.9);
        }
        .page-banner .banner-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(180deg, rgba(15, 36, 56, 0.65) 0%, rgba(26, 53, 80, 0.8) 60%, rgba(15, 36, 56, 0.9) 100%);
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 60px 0 50px;
        }
        .page-banner .banner-badge {
            display: inline-block;
            background: var(--color-hot);
            color: #fff;
            font-weight: 600;
            font-size: 0.8rem;
            letter-spacing: 0.06em;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 16px;
            animation: pulse-badge 2.4s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(217, 65, 59, 0.5);
            }
            50% {
                box-shadow: 0 0 0 14px rgba(217, 65, 59, 0);
            }
        }
        .page-banner .banner-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2.8rem;
            color: #fff;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .page-banner .banner-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            line-height: 1.7;
            font-weight: 400;
        }
        .page-banner .banner-stats-row {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 24px;
        }
        .page-banner .banner-stat-item {
            display: flex;
            align-items: baseline;
            gap: 6px;
            color: #fff;
        }
        .page-banner .banner-stat-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-accent-light);
            letter-spacing: -0.02em;
        }
        .page-banner .banner-stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.75);
        }

        @media (max-width: 768px) {
            .page-banner {
                min-height: 300px;
                margin-top: 58px;
            }
            .page-banner .banner-title {
                font-size: 2rem;
            }
            .page-banner .banner-subtitle {
                font-size: 1rem;
            }
            .page-banner .banner-stats-row {
                gap: 20px;
            }
            .page-banner .banner-stat-num {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner {
                min-height: 260px;
                margin-top: 52px;
            }
            .page-banner .banner-title {
                font-size: 1.6rem;
            }
            .page-banner .banner-content {
                padding: 40px 0 35px;
            }
            .page-banner .banner-stats-row {
                gap: 14px;
            }
        }

        /* ========== SECTION TITLES ========== */
        .section-label {
            display: inline-block;
            font-weight: 600;
            font-size: 0.8rem;
            letter-spacing: 0.08em;
            color: var(--color-accent-dark);
            text-transform: uppercase;
            margin-bottom: 8px;
            position: relative;
            padding-left: 14px;
        }
        .section-label::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 16px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2rem;
            color: var(--color-text-strong);
            letter-spacing: 0.02em;
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-text-weak);
            max-width: 620px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* ========== CARDS ========== */
        .card-custom {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .card-custom .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--color-bg-dark);
        }
        .card-custom .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .card-custom:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .card-custom .card-img-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-hot);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            letter-spacing: 0.04em;
            z-index: 2;
        }
        .card-custom .card-img-badge.accent-badge {
            background: var(--color-accent);
            color: #fff;
        }
        .card-custom .card-body-custom {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-custom .card-meta {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 6px;
            flex-wrap: wrap;
        }
        .card-custom .card-title-link {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 1.08rem;
            color: var(--color-text-strong);
            line-height: 1.4;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }
        .card-custom:hover .card-title-link {
            color: var(--color-accent-dark);
        }
        .card-custom .card-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-custom .card-footer-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
            font-size: 0.85rem;
            color: var(--color-text-weak);
        }
        .card-custom .card-stat {
            display: flex;
            align-items: center;
            gap: 4px;
            font-weight: 500;
            color: var(--color-hot);
        }
        .card-custom .card-stat i {
            font-size: 0.85rem;
        }

        /* ========== LIST CARD (expert picks) ========== */
        .expert-list-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            background: var(--color-bg-white);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            margin-bottom: 14px;
        }
        .expert-list-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: var(--color-border);
        }
        .expert-list-item .expert-thumb {
            width: 72px;
            height: 72px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-dark);
        }
        .expert-list-item .expert-info {
            flex: 1;
            min-width: 0;
        }
        .expert-list-item .expert-title {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text-strong);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .expert-list-item .expert-desc {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .expert-list-item .expert-meta {
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-top: 6px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        @media (max-width: 520px) {
            .expert-list-item {
                flex-direction: column;
                gap: 10px;
                padding: 14px;
            }
            .expert-list-item .expert-thumb {
                width: 100%;
                height: 160px;
                border-radius: var(--radius-sm);
            }
        }

        /* ========== STAT GRID ========== */
        .stat-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 24px 22px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: all var(--transition-smooth);
            height: 100%;
        }
        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .stat-card .stat-icon-circle {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 10px;
            background: rgba(212, 168, 83, 0.12);
            color: var(--color-accent-dark);
        }
        .stat-card .stat-value {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2.2rem;
            color: var(--color-text-strong);
            letter-spacing: -0.02em;
            line-height: 1.1;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            margin-top: 4px;
        }
        .stat-card .stat-trend {
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 6px;
        }
        .stat-trend.up {
            color: #16a34a;
        }
        .stat-trend.hot {
            color: var(--color-hot);
        }

        @media (max-width: 768px) {
            .stat-card .stat-value {
                font-size: 1.7rem;
            }
        }

        /* ========== HOT TOPIC LIST ========== */
        .hot-topic-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 18px;
            background: var(--color-bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-fast);
            margin-bottom: 10px;
        }
        .hot-topic-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border);
        }
        .hot-topic-rank {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
            flex-shrink: 0;
            color: #fff;
            background: var(--color-text-muted);
        }
        .hot-topic-rank.top1 {
            background: linear-gradient(135deg, #f59e0b, #d97706);
        }
        .hot-topic-rank.top2 {
            background: linear-gradient(135deg, #94a3b8, #64748b);
        }
        .hot-topic-rank.top3 {
            background: linear-gradient(135deg, #b87351, #9a5d3e);
        }
        .hot-topic-item .hot-topic-info {
            flex: 1;
            min-width: 0;
        }
        .hot-topic-item .hot-topic-title {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text-strong);
            line-height: 1.4;
        }
        .hot-topic-item .hot-topic-count {
            font-size: 0.78rem;
            color: var(--color-hot);
            font-weight: 500;
            white-space: nowrap;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .cta-section .cta-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.8rem;
            position: relative;
            z-index: 1;
            letter-spacing: 0.02em;
        }
        .cta-section .cta-desc {
            font-size: 1rem;
            position: relative;
            z-index: 1;
            color: rgba(255, 255, 255, 0.8);
            max-width: 480px;
            margin: 10px auto 24px;
            line-height: 1.6;
        }
        .btn-accent {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            border: none;
            transition: all var(--transition-bounce);
            letter-spacing: 0.02em;
            box-shadow: var(--shadow-btn);
            position: relative;
            z-index: 1;
            cursor: pointer;
        }
        .btn-accent:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 168, 83, 0.4);
            color: #fff;
        }
        .btn-accent:active {
            transform: translateY(0);
            box-shadow: var(--shadow-btn);
        }
        .btn-outline-accent {
            display: inline-block;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-bounce);
            letter-spacing: 0.02em;
            position: relative;
            z-index: 1;
            cursor: pointer;
            margin-left: 10px;
        }
        .btn-outline-accent:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 520px) {
            .cta-section {
                padding: 32px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section .cta-title {
                font-size: 1.4rem;
            }
            .btn-outline-accent {
                margin-left: 0;
                margin-top: 10px;
            }
        }

        /* ========== FAQ ========== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: var(--color-bg-white);
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text-strong);
            background: var(--color-bg-white);
            padding: 16px 20px;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: var(--color-bg-light);
            box-shadow: none;
            border-bottom: 1px solid var(--color-border-light);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(212, 168, 83, 0.2);
            outline: none;
        }
        .faq-accordion .accordion-body {
            font-size: 0.95rem;
            color: var(--color-text-weak);
            line-height: 1.75;
            padding: 16px 20px 20px;
            background: var(--color-bg-white);
        }
        .faq-accordion .accordion-button::after {
            background-size: 16px;
            transition: transform var(--transition-fast);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 50px 0 24px;
            margin-top: var(--section-gap);
            font-size: 0.93rem;
            line-height: 1.8;
        }
        .site-footer .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            display: block;
            margin-bottom: 8px;
            letter-spacing: 0.03em;
        }
        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.65);
            max-width: 360px;
            line-height: 1.7;
            font-size: 0.9rem;
        }
        .site-footer h6 {
            font-weight: 600;
            font-size: 0.9rem;
            color: #fff;
            letter-spacing: 0.04em;
            margin-bottom: 14px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 7px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-links a:hover {
            color: var(--color-accent-light);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 32px;
            padding-top: 18px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
            letter-spacing: 0.02em;
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 36px 0 20px;
                margin-top: var(--section-gap-sm);
            }
        }

        /* ========== ANIMATIONS ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(28px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .anim-fade-up {
            animation: fadeInUp 0.65s ease forwards;
        }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --color-primary: #1a365d;
            --color-primary-light: #2c5282;
            --color-primary-dark: #0f2340;
            --color-accent: #c9a96e;
            --color-accent-light: #dcc090;
            --color-accent-dark: #b08d4a;
            --color-bg: #f8f9fb;
            --color-bg-white: #ffffff;
            --color-bg-dark: #111827;
            --color-text: #1a1a2e;
            --color-text-secondary: #5a6070;
            --color-text-muted: #88909b;
            --color-border: #e2e5ea;
            --color-border-light: #eef0f4;
            --color-success: #2e7d32;
            --color-warning: #e6a817;
            --color-danger: #c0392b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.12);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --header-height: 72px;
            --container-max: 1200px;
        }

        /* ============ 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(--font-sans);
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }

        /* ============ 容器 ============ */
        .container {
            max-width: var(--container-max);
        }

        /* ============ 导航 - 玻璃沉浸效果 ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
            transition: all var(--transition-base);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
            border-bottom-color: rgba(0, 0, 0, 0.1);
        }
        .site-header .navbar {
            width: 100%;
            padding: 0;
            min-height: auto;
        }
        .site-header .navbar-brand {
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 9px;
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .site-header .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(26, 54, 93, 0.25);
        }
        .site-header .navbar-brand:hover {
            color: var(--color-primary-light);
        }
        .site-header .nav-link {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            padding: 0.55rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .site-header .nav-link:hover {
            color: var(--color-primary);
            background: rgba(26, 54, 93, 0.05);
        }
        .site-header .nav-link.active {
            color: var(--color-accent-dark);
            background: rgba(201, 169, 110, 0.10);
            font-weight: 600;
        }
        .site-header .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 2px;
            background: var(--color-accent);
        }
        .site-header .navbar-toggler {
            border: none;
            padding: 6px 10px;
            color: var(--color-primary);
            box-shadow: none;
            outline: none;
        }
        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.12);
            outline: none;
        }
        .site-header .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%231a365d' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }

        /* 移动端导航展开 */
        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                padding: 1rem 1.25rem;
                margin-top: 8px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--color-border-light);
            }
            .site-header .nav-link {
                padding: 0.7rem 1rem !important;
                border-radius: var(--radius-sm);
                margin-bottom: 2px;
            }
            .site-header .nav-link.active::after {
                display: none;
            }
        }

        /* ============ 页面主体偏移 ============ */
        .page-main {
            padding-top: var(--header-height);
        }

        /* ============ Banner/Hero ============ */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, #0f2340 0%, #1a365d 30%, #1e4d7b 60%, #1a365d 100%);
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            mix-blend-mode: overlay;
            z-index: 1;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--color-bg) 0%, transparent 100%);
            z-index: 2;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 3;
            padding: 70px 0 50px;
        }
        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(201, 169, 110, 0.2);
            color: var(--color-accent-light);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            border: 1px solid rgba(201, 169, 110, 0.3);
            margin-bottom: 18px;
        }
        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.5px;
            margin-bottom: 14px;
            line-height: 1.25;
        }
        .category-hero .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            line-height: 1.75;
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .category-hero {
                min-height: 320px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero .hero-desc {
                font-size: 0.95rem;
            }
            .category-hero .hero-content {
                padding: 50px 0 35px;
            }
        }

        /* ============ 板块通用 ============ */
        .section-block {
            padding: 60px 0;
        }
        .section-block.bg-white {
            background-color: var(--color-bg-white);
        }
        .section-block.bg-light {
            background-color: var(--color-bg);
        }
        .section-title {
            font-weight: 700;
            font-size: 1.75rem;
            color: var(--color-primary);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            color: var(--color-text-muted);
            font-size: 0.95rem;
            margin-bottom: 32px;
        }
        .section-divider {
            width: 48px;
            height: 4px;
            border-radius: 2px;
            background: var(--color-accent);
            margin-bottom: 20px;
        }

        /* ============ 卡片通用 ============ */
        .card-custom {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .card-custom .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }
        .card-custom .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card-custom:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .card-custom .card-body-custom {
            padding: 20px 22px;
        }
        .card-custom .card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 14px;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .card-tag.accent {
            background: rgba(201, 169, 110, 0.13);
            color: var(--color-accent-dark);
        }
        .card-tag.primary {
            background: rgba(26, 54, 93, 0.08);
            color: var(--color-primary);
        }
        .card-tag.success {
            background: rgba(46, 125, 50, 0.10);
            color: var(--color-success);
        }
        .card-custom h4 {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-custom p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ============ 分析维度图标卡片 ============ */
        .dimension-card {
            text-align: center;
            padding: 30px 22px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
            height: 100%;
        }
        .dimension-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-accent);
        }
        .dimension-card .dim-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            font-size: 1.4rem;
            margin-bottom: 16px;
            box-shadow: 0 4px 14px rgba(26, 54, 93, 0.2);
        }
        .dimension-card h5 {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .dimension-card p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ============ 报告列表 ============ */
        .report-list-item {
            display: flex;
            gap: 16px;
            padding: 18px 20px;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            margin-bottom: 10px;
            transition: all var(--transition-fast);
            align-items: flex-start;
        }
        .report-list-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--color-border);
            background: #fafbfd;
        }
        .report-list-item .report-date {
            flex-shrink: 0;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-accent-dark);
            background: rgba(201, 169, 110, 0.10);
            padding: 4px 10px;
            border-radius: 14px;
            white-space: nowrap;
            margin-top: 2px;
        }
        .report-list-item .report-info h6 {
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .report-list-item .report-info p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.5;
        }
        @media (max-width: 520px) {
            .report-list-item {
                flex-direction: column;
                gap: 8px;
            }
        }

        /* ============ FAQ ============ */
        .faq-section .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-xs);
        }
        .faq-section .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            background: #fff;
            padding: 18px 20px;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-fast);
        }
        .faq-section .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: #f8f9fb;
            box-shadow: none;
        }
        .faq-section .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.08);
            border-color: var(--color-border);
        }
        .faq-section .accordion-button::after {
            background-size: 14px;
            transition: transform var(--transition-fast);
        }
        .faq-section .accordion-body {
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
            padding: 6px 20px 20px;
            background: #fff;
        }

        /* ============ CTA 板块 ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            mix-blend-mode: soft-light;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #fff;
        }
        .cta-section h3 {
            font-weight: 800;
            font-size: 1.8rem;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .cta-section p {
            font-size: 1rem;
            opacity: 0.9;
            max-width: 550px;
            margin: 0 auto 24px;
        }
        .btn-cta {
            display: inline-block;
            padding: 13px 32px;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 30px;
            background: var(--color-accent);
            color: #1a1a2e;
            border: none;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(201, 169, 110, 0.35);
            letter-spacing: 0.3px;
        }
        .btn-cta:hover {
            background: var(--color-accent-light);
            color: #1a1a2e;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 169, 110, 0.5);
        }

        /* ============ 按钮通用 ============ */
        .btn-outline-custom {
            display: inline-block;
            padding: 9px 20px;
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: 24px;
            border: 2px solid var(--color-primary);
            color: var(--color-primary);
            background: transparent;
            transition: all var(--transition-fast);
            letter-spacing: 0.2px;
        }
        .btn-outline-custom:hover {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 54, 93, 0.25);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--color-bg-dark);
            color: #c5c9d2;
            padding: 50px 0 0;
            font-size: 0.9rem;
        }
        .site-footer .footer-brand {
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            display: block;
            margin-bottom: 10px;
        }
        .site-footer .footer-desc {
            color: #9aa0ab;
            line-height: 1.7;
            max-width: 340px;
        }
        .site-footer h6 {
            color: #e0e3e8;
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 8px;
        }
        .site-footer .footer-links a {
            color: #9aa0ab;
            transition: color var(--transition-fast);
            font-size: 0.88rem;
        }
        .site-footer .footer-links a:hover {
            color: var(--color-accent-light);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            margin-top: 36px;
            padding: 18px 0;
            text-align: center;
            color: #7a8190;
            font-size: 0.82rem;
            letter-spacing: 0.2px;
        }

        /* ============ 响应式补充 ============ */
        @media (max-width: 1024px) {
            .section-block {
                padding: 44px 0;
            }
            .category-hero h1 {
                font-size: 2.3rem;
            }
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 36px 0;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .dimension-card {
                padding: 22px 16px;
            }
            .card-custom .card-body-custom {
                padding: 16px;
            }
            .cta-section h3 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.65rem;
            }
            .category-hero .hero-desc {
                font-size: 0.88rem;
            }
            .btn-cta {
                padding: 11px 24px;
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .card-custom h4 {
                font-size: 1rem;
            }
        }