/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1B2A4A;
            --primary-light: #2C4A6E;
            --accent: #D4A843;
            --accent-light: #E0B95A;
            --bg-light: #F5F6FA;
            --bg-white: #FFFFFF;
            --text-dark: #1A1A2E;
            --text-body: #2D2D44;
            --text-muted: #6B7280;
            --border-color: #E5E7EB;
            --success: #2A9D8F;
            --danger: #E76F51;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.15);
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --container-max: 1320px;
            --header-height: 72px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            letter-spacing: 0.02em;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: var(--container-max); padding-left: 24px; padding-right: 24px; margin: 0 auto; }
        .container-fluid { padding-left: 24px; padding-right: 24px; }
        h1, h2, h3, h4, h5, h6 { font-weight: 600; color: var(--text-dark); letter-spacing: 0.02em; }
        h1 { font-size: 2.5rem; font-weight: 700; }
        h2 { font-size: 2rem; font-weight: 600; }
        h3 { font-size: 1.5rem; font-weight: 500; }
        p { margin-bottom: 1rem; }
        .section-padding { padding: 80px 0; }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { margin-bottom: 12px; }
        .section-title p { color: var(--text-muted); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }

        /* ===== Buttons ===== */
        .btn { border-radius: var(--radius-md); font-weight: 500; padding: 12px 32px; transition: var(--transition); letter-spacing: 0.02em; border: 2px solid transparent; }
        .btn-primary-custom {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .btn-primary-custom:hover {
            background: var(--accent-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 67, 0.35);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-ghost {
            background: transparent;
            color: var(--primary);
            border: none;
        }
        .btn-ghost:hover { color: var(--accent); text-decoration: underline; }
        .btn-lg-custom { padding: 16px 48px; border-radius: var(--radius-xl); font-size: 1.1rem; }

        /* ===== Badge / Tag ===== */
        .badge-custom {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--primary);
            color: #fff;
            letter-spacing: 0.02em;
        }
        .badge-accent {
            background: var(--accent);
            color: #fff;
        }
        .badge-success {
            background: var(--success);
            color: #fff;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            display: flex;
            align-items: center;
            box-shadow: 0 2px 10px rgba(0,0,0,0.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo-text {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.04em;
        }
        .logo-text span { color: var(--accent); }
        .main-nav { display: flex; align-items: center; gap: 2rem; }
        .main-nav a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            padding-bottom: 4px;
            transition: var(--transition);
        }
        .main-nav a:hover { color: var(--accent); }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 2px;
        }
        .nav-icon { color: var(--text-muted); font-size: 1.1rem; transition: var(--transition); }
        .nav-icon:hover { color: var(--accent); }
        /* Hamburger (mobile) */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            padding: 20px 24px;
            z-index: 1040;
            flex-direction: column;
            gap: 16px;
        }
        .mobile-nav-overlay.open { display: flex; }
        .mobile-nav-overlay a {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .mobile-nav-overlay a.active { color: var(--accent); font-weight: 600; }
        .mobile-nav-overlay a:last-child { border-bottom: none; }

        /* ===== Hero Section ===== */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #1B2A4A 0%, #2C4A6E 100%);
            background-image: url('/assets/images/backpic/back-1.png'), linear-gradient(135deg, #1B2A4A 0%, #2C4A6E 100%);
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: rgba(27, 42, 74, 0.75);
            z-index: 1;
        }
        .hero-content { position: relative; z-index: 2; color: #fff; max-width: 780px; }
        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 20px;
        }
        .hero-content p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.85);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-actions .btn-primary-custom { background: var(--accent); border-color: var(--accent); color: #fff; }
        .hero-actions .btn-primary-custom:hover { background: var(--accent-light); }
        .hero-actions .btn-outline-light {
            background: transparent;
            border: 2px solid rgba(255,255,255,0.7);
            color: #fff;
        }
        .hero-actions .btn-outline-light:hover {
            background: rgba(255,255,255,0.15);
            border-color: #fff;
        }

        /* ===== Steps / 三步上手 ===== */
        .steps-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 36px 28px 28px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
        }
        .steps-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent);
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 auto 20px;
        }
        .steps-card h3 { font-size: 1.25rem; margin-bottom: 12px; }
        .steps-card p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 0; }

        /* ===== Case Cards ===== */
        .case-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .case-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .case-img {
            height: 200px;
            background: var(--primary-light);
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .case-body { padding: 24px 24px 20px; flex: 1; display: flex; flex-direction: column; }
        .case-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .case-body p { color: var(--text-muted); font-size: 0.9rem; flex: 1; margin-bottom: 16px; }
        .case-metric {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 4px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.8rem;
            font-weight: 600;
            align-self: flex-end;
        }

        /* ===== FAQ Accordion ===== */
        .faq-section { background: var(--bg-white); }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-dark);
            cursor: pointer;
            padding: 8px 0;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--accent); }
        .faq-question .faq-icon { transition: transform 0.3s; font-size: 0.9rem; color: var(--text-muted); }
        .faq-question.open .faq-icon { transform: rotate(90deg); color: var(--accent); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 8px;
        }
        .faq-answer.open { max-height: 300px; padding: 12px 8px 8px; }
        .faq-answer p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 0; line-height: 1.7; }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, #1B2A4A 0%, #2C4A6E 60%, #D4A843 100%);
            padding: 80px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 { color: #fff; font-size: 2.2rem; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 600px; margin: 0 auto 32px; }
        .cta-section .btn-cta {
            background: var(--bg-white);
            color: var(--primary);
            padding: 16px 56px;
            border-radius: var(--radius-xl);
            font-size: 1.1rem;
            font-weight: 600;
            border: none;
            transition: var(--transition);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(212, 168, 67, 0.4);
        }

        /* ===== News / Latest Posts ===== */
        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 20px 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            border-left: 4px solid var(--accent);
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .news-card .news-meta { display: flex; gap: 12px; align-items: center; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 8px; }
        .news-card .news-meta .badge-custom { font-size: 0.7rem; padding: 2px 10px; }
        .news-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .news-card h3 a { color: var(--text-dark); }
        .news-card h3 a:hover { color: var(--accent); }
        .news-card p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0; }
        .news-empty {
            text-align: center;
            padding: 40px 20px;
            border: 2px dashed var(--border-color);
            border-radius: var(--radius-lg);
            color: var(--text-muted);
        }
        .news-empty i { font-size: 2.5rem; margin-bottom: 12px; color: var(--border-color); }

        /* ===== Footer ===== */
        .site-footer {
            background: #0F1A2E;
            color: rgba(255,255,255,0.7);
            padding: 56px 0 24px;
        }
        .site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
        .site-footer a { color: rgba(255,255,255,0.6); font-size: 0.9rem; }
        .site-footer a:hover { color: var(--accent); }
        .footer-links { list-style: none; padding: 0; margin: 0; }
        .footer-links li { margin-bottom: 8px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-brand { font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
        .footer-brand span { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .main-nav { display: none; }
            .hamburger { display: flex; }
            .hero-content h1 { font-size: 2.2rem; }
            .section-padding { padding: 60px 0; }
            .cta-section h2 { font-size: 1.8rem; }
        }
        @media (max-width: 768px) {
            .hero-section { min-height: 50vh; padding: 60px 0; }
            .hero-content h1 { font-size: 1.8rem; }
            .hero-content p { font-size: 1rem; }
            .hero-actions { flex-direction: column; align-items: flex-start; }
            .section-padding { padding: 48px 0; }
            .section-title { margin-bottom: 32px; }
            .steps-card { padding: 28px 20px 20px; }
            .case-img { height: 160px; }
            .cta-section { padding: 60px 0; }
            .cta-section h2 { font-size: 1.5rem; }
            .site-footer { padding: 40px 0 16px; }
            .footer-bottom { margin-top: 24px; }
        }
        @media (max-width: 576px) {
            .hero-content h1 { font-size: 1.5rem; }
            .hero-content p { font-size: 0.95rem; }
            .btn-lg-custom { padding: 14px 36px; font-size: 1rem; }
            .container { padding-left: 16px; padding-right: 16px; }
            .news-card { padding: 16px 18px; }
        }

        /* ===== Utility ===== */
        .text-accent { color: var(--accent); }
        .bg-primary-dark { background: var(--primary); }
        .bg-light-custom { background: var(--bg-light); }
        .shadow-hover-card { transition: var(--transition); }
        .shadow-hover-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .gap-2rem { gap: 2rem; }
        .mb-section { margin-bottom: 80px; }
        @media (max-width: 768px) { .mb-section { margin-bottom: 48px; } }

        /* ===== Active nav highlight override ===== */
        .main-nav a.active { border-bottom: 2px solid var(--accent); padding-bottom: 2px; }

/* roulang page: article */
:root {
            --primary: #1B2A4A;
            --primary-light: #2C4A6E;
            --accent: #D4A843;
            --accent-hover: #C49A3A;
            --bg-light: #F5F6FA;
            --white: #FFFFFF;
            --text-dark: #1B2A4A;
            --text-muted: #6B7A8F;
            --border-light: #E0E0E0;
            --success: #2A9D8F;
            --danger: #E76F51;
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-badge: 8px;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
            --shadow-nav: 0 2px 10px rgba(0,0,0,0.05);
            --font-family: "PingFang SC","Microsoft YaHei",sans-serif;
            --max-width: 1320px;
            --gap-section: 80px;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{font-family:var(--font-family);font-size:1rem;line-height:1.6;color:var(--text-dark);background:var(--bg-light);letter-spacing:0.02em;-webkit-font-smoothing:antialiased}
        a{color:var(--primary);text-decoration:none;transition:color 0.2s}
        a:hover{color:var(--accent)}
        img{max-width:100%;height:auto;display:block}
        .container{max-width:var(--max-width);padding-left:24px;padding-right:24px;margin:0 auto}
        .container-narrow{max-width:850px;padding-left:24px;padding-right:24px;margin:0 auto}
        h1{font-size:2.5rem;font-weight:700;line-height:1.3}
        h2{font-size:2rem;font-weight:600;line-height:1.35}
        h3{font-size:1.5rem;font-weight:500;line-height:1.4}
        h4{font-size:1.25rem;font-weight:500;line-height:1.4}
        .text-accent{color:var(--accent)}
        .text-muted{color:var(--text-muted)}
        .bg-primary{background:var(--primary)!important}
        .bg-accent{background:var(--accent)!important}
        .bg-light{background:var(--bg-light)!important}
        .btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 32px;border-radius:var(--radius-btn);font-weight:500;font-size:1rem;border:2px solid transparent;transition:all 0.3s ease;cursor:pointer;letter-spacing:0.02em}
        .btn-primary{background:var(--accent);color:var(--white);border-color:var(--accent)}
        .btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:var(--white);transform:translateY(-2px);box-shadow:0 6px 20px rgba(212,168,67,0.35)}
        .btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
        .btn-outline:hover{background:var(--primary);color:var(--white);transform:translateY(-2px)}
        .btn-ghost{background:transparent;color:var(--primary);border:none;padding:8px 16px}
        .btn-ghost:hover{background:rgba(27,42,74,0.06);color:var(--accent)}
        .btn-lg{padding:16px 48px;font-size:1.125rem;border-radius:18px}
        .section{padding:var(--gap-section) 0}
        .section-title{font-size:2rem;font-weight:600;margin-bottom:0.5rem;color:var(--primary)}
        .section-subtitle{font-size:1.05rem;color:var(--text-muted);max-width:640px;margin-bottom:2.5rem}
        .card{background:var(--white);border-radius:var(--radius-card);box-shadow:var(--shadow-card);border:none;transition:all 0.3s ease;overflow:hidden}
        .card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
        .card-body{padding:28px}
        .badge-custom{display:inline-block;padding:6px 14px;border-radius:var(--radius-badge);font-size:0.8rem;font-weight:500;background:var(--primary);color:var(--white)}
        .badge-accent{background:var(--accent);color:var(--white)}
        .badge-success{background:var(--success);color:var(--white)}
        .gap-section{gap:var(--gap-section)}
        .mt-section{margin-top:var(--gap-section)}
        .mb-section{margin-bottom:var(--gap-section)}
        /* ===== 导航 ===== */
        .site-header{position:sticky;top:0;z-index:1050;background:var(--white);box-shadow:var(--shadow-nav);border-bottom:1px solid var(--border-light);height:64px}
        .site-header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
        .logo-wrap{display:flex;align-items:center;gap:6px;font-size:1.4rem;font-weight:700;color:var(--primary);letter-spacing:0.04em}
        .logo-wrap span{color:var(--accent);font-weight:300}
        .main-nav{display:flex;align-items:center;gap:2rem}
        .main-nav a{font-size:0.9rem;font-weight:500;color:var(--text-dark);padding:6px 0;position:relative;transition:color 0.2s;white-space:nowrap}
        .main-nav a:hover,.main-nav a.active{color:var(--accent)}
        .main-nav a.active::after{content:'';position:absolute;bottom:-2px;left:0;width:100%;height:2px;background:var(--accent);border-radius:4px}
        .main-nav .nav-icon{font-size:1.1rem;color:var(--text-muted);padding:6px 8px}
        .main-nav .nav-icon:hover{color:var(--accent)}
        .nav-toggle{display:none;background:none;border:none;font-size:1.5rem;color:var(--primary);cursor:pointer;padding:4px 8px}
        /* ===== 文章 Hero ===== */
        .article-hero{position:relative;background:linear-gradient(135deg,rgba(27,42,74,0.92) 0%,rgba(44,74,110,0.88) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;padding:80px 0 60px;min-height:320px;display:flex;align-items:center}
        .article-hero .breadcrumb{background:transparent;padding:0;margin-bottom:16px;font-size:0.9rem}
        .article-hero .breadcrumb-item{color:rgba(255,255,255,0.7)}
        .article-hero .breadcrumb-item a{color:rgba(255,255,255,0.85);text-decoration:none}
        .article-hero .breadcrumb-item a:hover{color:var(--accent)}
        .article-hero .breadcrumb-item.active{color:var(--accent);font-weight:600}
        .article-hero .breadcrumb-item+.breadcrumb-item::before{color:rgba(255,255,255,0.5)}
        .article-hero h1{color:var(--white);font-size:2.2rem;font-weight:700;max-width:800px;line-height:1.35}
        .article-hero .meta-info{color:rgba(255,255,255,0.75);font-size:0.95rem;margin-top:16px;display:flex;flex-wrap:wrap;gap:20px}
        .article-hero .meta-info i{margin-right:6px;color:var(--accent)}
        /* ===== 正文区 ===== */
        .content-area{padding:48px 0 60px}
        .content-area .article-body{font-size:1.125rem;line-height:1.8;color:var(--text-dark)}
        .content-area .article-body p{margin-bottom:1.2em}
        .content-area .article-body h2,.content-area .article-body h3,.content-area .article-body h4{margin-top:1.8em;margin-bottom:0.6em;color:var(--primary);font-weight:600}
        .content-area .article-body h2{font-size:1.75rem}
        .content-area .article-body h3{font-size:1.35rem}
        .content-area .article-body h4{font-size:1.1rem}
        .content-area .article-body ul,.content-area .article-body ol{margin-bottom:1.2em;padding-left:1.5em}
        .content-area .article-body li{margin-bottom:0.3em}
        .content-area .article-body blockquote{border-left:4px solid var(--accent);padding:12px 20px;margin:1.5em 0;background:var(--bg-light);border-radius:0 var(--radius-badge) var(--radius-badge) 0;color:var(--text-muted);font-style:italic}
        .content-area .article-body img{max-width:100%;height:auto;border-radius:var(--radius-card);margin:1.5em auto;display:block;box-shadow:var(--shadow-card)}
        .content-area .article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
        .content-area .article-body a:hover{color:var(--accent-hover)}
        .content-area .article-body pre{background:var(--primary);color:#f0f0f0;padding:20px;border-radius:var(--radius-card);overflow-x:auto;font-size:0.9rem;margin:1.5em 0}
        .content-area .article-body code{font-family:'SF Mono','Fira Code',monospace;background:var(--bg-light);padding:2px 8px;border-radius:4px;font-size:0.9em}
        .content-area .article-body pre code{background:transparent;padding:0;color:inherit}
        .content-area .article-body table{width:100%;border-collapse:collapse;margin:1.5em 0}
        .content-area .article-body th,.content-area .article-body td{padding:12px 16px;border:1px solid var(--border-light);text-align:left}
        .content-area .article-body th{background:var(--primary);color:var(--white);font-weight:500}
        .content-area .article-body tr:nth-child(even){background:var(--bg-light)}
        .content-not-found{text-align:center;padding:80px 24px}
        .content-not-found .icon{font-size:4rem;color:var(--text-muted);margin-bottom:24px;opacity:0.5}
        .content-not-found h3{color:var(--primary);margin-bottom:12px}
        .content-not-found p{color:var(--text-muted);max-width:480px;margin:0 auto 24px}
        /* ===== 相关推荐 ===== */
        .related-articles{padding:60px 0 80px;background:var(--white)}
        .related-articles .section-title{font-size:1.6rem;margin-bottom:32px}
        .related-card{background:var(--bg-light);border-radius:var(--radius-card);padding:24px;transition:all 0.3s ease;border:1px solid transparent;height:100%}
        .related-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:var(--accent)}
        .related-card .card-title{font-size:1.05rem;font-weight:600;color:var(--primary);margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .related-card .card-title a{color:var(--primary)}
        .related-card .card-title a:hover{color:var(--accent)}
        .related-card .card-text{font-size:0.9rem;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px}
        .related-card .card-meta{font-size:0.8rem;color:var(--text-muted)}
        .related-card .card-meta i{margin-right:4px;color:var(--accent)}
        .back-link-wrap{text-align:center;margin-top:40px}
        .back-link-wrap a{color:var(--primary);font-weight:500;font-size:1rem;transition:color 0.2s}
        .back-link-wrap a:hover{color:var(--accent)}
        .back-link-wrap i{margin-right:6px}
        /* ===== 页脚 ===== */
        .site-footer{background:var(--primary);color:rgba(255,255,255,0.85);padding:60px 0 0}
        .site-footer .footer-brand{font-size:1.6rem;font-weight:700;color:var(--white);margin-bottom:12px;letter-spacing:0.04em}
        .site-footer .footer-brand span{color:var(--accent);font-weight:300}
        .site-footer p{font-size:0.9rem;max-width:360px;color:rgba(255,255,255,0.65);line-height:1.7}
        .site-footer h4{font-size:1.05rem;font-weight:600;color:var(--white);margin-bottom:18px}
        .site-footer .footer-links{list-style:none;padding:0;margin:0}
        .site-footer .footer-links li{margin-bottom:10px}
        .site-footer .footer-links a{color:rgba(255,255,255,0.65);font-size:0.9rem;transition:color 0.2s}
        .site-footer .footer-links a:hover{color:var(--accent);text-decoration:none}
        .site-footer .footer-links i{color:var(--accent);width:18px}
        .footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding:20px 0;margin-top:40px;text-align:center;font-size:0.8rem;color:rgba(255,255,255,0.5)}
        /* ===== 响应式 ===== */
        @media(max-width:992px){
            .main-nav{gap:1.2rem}
            .main-nav a{font-size:0.85rem}
            .article-hero h1{font-size:1.8rem}
            h1{font-size:2rem}
            h2{font-size:1.6rem}
            h3{font-size:1.25rem}
            .section{padding:56px 0}
            :root{--gap-section:56px}
        }
        @media(max-width:768px){
            .site-header .container{flex-wrap:wrap}
            .main-nav{display:none;flex-direction:column;width:100%;background:var(--white);position:absolute;top:64px;left:0;padding:16px 24px 24px;box-shadow:var(--shadow-nav);border-bottom:1px solid var(--border-light);gap:0.8rem}
            .main-nav.open{display:flex}
            .main-nav a{padding:10px 0;font-size:1rem;width:100%}
            .main-nav a.active::after{width:40px}
            .main-nav .nav-icon{display:none}
            .nav-toggle{display:block}
            .article-hero{padding:60px 0 40px;min-height:240px}
            .article-hero h1{font-size:1.5rem}
            .article-hero .meta-info{gap:12px;font-size:0.85rem;flex-direction:column}
            .content-area .article-body{font-size:1rem}
            .container-narrow{padding-left:20px;padding-right:20px}
            .related-card{padding:20px}
            .section{padding:40px 0}
            :root{--gap-section:40px}
            .site-footer .footer-brand{font-size:1.3rem}
        }
        @media(max-width:576px){
            h1{font-size:1.6rem}
            h2{font-size:1.35rem}
            h3{font-size:1.1rem}
            .article-hero h1{font-size:1.3rem}
            .article-hero .breadcrumb{font-size:0.8rem}
            .content-area .article-body{font-size:0.95rem}
            .btn{padding:10px 24px;font-size:0.9rem}
            .btn-lg{padding:14px 36px;font-size:1rem}
            .container{padding-left:16px;padding-right:16px}
            .container-narrow{padding-left:16px;padding-right:16px}
            .card-body{padding:20px}
        }
        /* ===== 辅助 ===== */
        .fade-in{animation:fadeIn 0.5s ease forwards}
        @keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
        .empty-state{text-align:center;padding:40px 20px;background:var(--bg-light);border-radius:var(--radius-card);border:2px dashed var(--border-light)}
        .empty-state i{font-size:2.5rem;color:var(--text-muted);margin-bottom:16px;opacity:0.4}
        .empty-state p{color:var(--text-muted);font-size:0.95rem;margin-bottom:0}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1B2A4A;
            --primary-light: #2C4A6E;
            --secondary: #D4A843;
            --secondary-light: #E0C06A;
            --bg-light: #F5F6FA;
            --white: #FFFFFF;
            --success: #2A9D8F;
            --danger: #E76F51;
            --text-dark: #1B2A4A;
            --text-muted: #6C7A8D;
            --border-color: #E0E0E0;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-xs: 4px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 2px 10px rgba(0, 0, 0, 0.05);
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --transition: 0.25s ease;
            --container-max: 1320px;
            --spacer: 80px;
            --spacer-mobile: 48px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.6;
            color: var(--text-dark);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            letter-spacing: 0.02em;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            letter-spacing: 0.01em;
            color: var(--text-dark);
        }
        h1 {
            font-size: 2.5rem;
            font-weight: 700;
        }
        h2 {
            font-size: 2rem;
            font-weight: 600;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 500;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-muted);
        }
        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
            margin: 0 auto;
        }
        .section-padding {
            padding-top: var(--spacer);
            padding-bottom: var(--spacer);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--white);
            box-shadow: var(--shadow-nav);
            border-bottom: 1px solid var(--border-color);
            height: 64px;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo a {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.04em;
            text-decoration: none;
        }
        .logo a span {
            color: var(--secondary);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .main-nav a {
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-dark);
            text-decoration: none;
            padding-bottom: 4px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            color: var(--secondary);
        }
        .main-nav a.active {
            color: var(--secondary);
            border-bottom: 2px solid var(--secondary);
        }
        .main-nav a.nav-icon {
            font-size: 1.1rem;
            color: var(--text-muted);
            border-bottom: none;
            padding-bottom: 0;
        }
        .main-nav a.nav-icon:hover {
            color: var(--secondary);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 50vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            background-attachment: fixed;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27, 42, 74, 0.88) 0%, rgba(44, 74, 110, 0.78) 100%);
            z-index: 1;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: var(--white);
            padding: 60px 24px;
            max-width: 800px;
        }
        .category-hero .hero-content h1 {
            color: var(--white);
            font-size: 2.8rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .category-hero .hero-content p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.15rem;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .category-hero .hero-content .btn-hero {
            padding: 14px 48px;
            font-size: 1.05rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: var(--secondary);
            color: var(--white);
            border: none;
            transition: all var(--transition);
            text-decoration: none;
            display: inline-block;
        }
        .category-hero .hero-content .btn-hero:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 67, 0.35);
            color: var(--white);
        }

        /* ===== 板块通用 ===== */
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            max-width: 640px;
            margin: 0 auto;
            font-size: 1.05rem;
        }

        /* ===== 核心优势卡片 ===== */
        .advantage-card {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 32px 24px 28px;
            text-align: center;
            transition: all var(--transition);
            height: 100%;
        }
        .advantage-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .advantage-card .icon-wrap {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .advantage-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .advantage-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 服务流程 ===== */
        .step-card {
            text-align: center;
            padding: 24px 16px;
            position: relative;
        }
        .step-card .step-number {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            background: var(--primary);
            color: var(--secondary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 700;
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .step-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .step-connector {
                display: flex;
                align-items: center;
                justify-content: center;
                font-size: 1.4rem;
                color: var(--secondary);
            }
        }

        /* ===== 场景卡片 ===== */
        .scene-card {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scene-card .scene-img {
            height: 180px;
            background: var(--primary-light) center center / cover no-repeat;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 2rem;
        }
        .scene-card .scene-body {
            padding: 24px 20px 28px;
        }
        .scene-card .scene-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .scene-card .scene-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .scene-card .scene-body .tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: var(--radius-xs);
            margin-right: 6px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--white);
        }
        .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-color);
        }
        .accordion-button {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-dark);
            background: var(--white);
            padding: 18px 20px;
            box-shadow: none;
        }
        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--white);
            box-shadow: none;
        }
        .accordion-button::after {
            background-size: 1rem;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--secondary);
        }
        .accordion-body {
            padding: 0 20px 20px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1B2A4A 0%, #D4A843 100%);
            padding: 72px 0;
            text-align: center;
        }
        .cta-section h2 {
            color: var(--white);
            font-size: 2rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-section .btn-cta {
            padding: 16px 56px;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 18px;
            background: var(--white);
            color: var(--primary);
            border: none;
            transition: all var(--transition);
            text-decoration: none;
            display: inline-block;
        }
        .cta-section .btn-cta:hover {
            background: var(--secondary);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 67, 0.4);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0F1A2E;
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 32px;
            font-size: 0.875rem;
        }
        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }
        .site-footer .footer-brand span {
            color: var(--secondary);
        }
        .site-footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 16px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--secondary);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            margin-top: 32px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .main-nav {
                gap: 1.2rem;
            }
            .main-nav a {
                font-size: 0.8rem;
            }
            .category-hero .hero-content h1 {
                font-size: 2.2rem;
            }
            .category-hero .hero-content p {
                font-size: 1rem;
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                flex-wrap: nowrap;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                gap: 0;
                padding: 16px 24px 24px;
                box-shadow: var(--shadow-nav);
                border-bottom: 1px solid var(--border-color);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 0;
                border-bottom: 1px solid var(--border-color);
                width: 100%;
                font-size: 0.95rem;
            }
            .main-nav a.active {
                border-bottom: 2px solid var(--secondary);
            }
            .main-nav a.nav-icon {
                display: none;
            }
            .category-hero {
                min-height: 40vh;
                background-attachment: scroll;
            }
            .category-hero .hero-content h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-content p {
                font-size: 0.95rem;
            }
            .category-hero .hero-content .btn-hero {
                padding: 12px 36px;
                font-size: 0.95rem;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .section-padding {
                padding-top: var(--spacer-mobile);
                padding-bottom: var(--spacer-mobile);
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section .btn-cta {
                padding: 14px 40px;
                font-size: 1rem;
            }
            .step-card {
                padding: 16px 8px;
            }
            .site-footer {
                padding: 40px 0 24px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.25rem;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-hero .hero-content {
                padding: 40px 16px;
            }
            .category-hero .hero-content h1 {
                font-size: 1.5rem;
            }
            .advantage-card {
                padding: 24px 16px 20px;
            }
            .scene-card .scene-body {
                padding: 16px 16px 20px;
            }
        }

        /* ===== 辅助 ===== */
        .bg-white {
            background: var(--white);
        }
        .bg-light {
            background: var(--bg-light);
        }
        .text-gold {
            color: var(--secondary);
        }
        .mb-2 {
            margin-bottom: 0.5rem;
        }
        .mb-4 {
            margin-bottom: 1.5rem;
        }
        .mt-4 {
            margin-top: 1.5rem;
        }
        .gap-4 {
            gap: 1.5rem;
        }
        .gap-3 {
            gap: 1rem;
        }
        .fw-600 {
            font-weight: 600;
        }

/* roulang page: category3 */
:root {
            --primary: #1B2A4A;
            --primary-dark: #0F1A2E;
            --primary-light: #2C4A6E;
            --accent: #D4A843;
            --accent-hover: #c49a3a;
            --bg-light: #F5F6FA;
            --bg-white: #FFFFFF;
            --text-dark: #1B2A4A;
            --text-body: #3D4A5C;
            --text-muted: #7A8699;
            --border-color: #E0E0E0;
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-badge: 8px;
            --radius-nav: 4px;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
            --shadow-nav: 0 2px 10px rgba(0,0,0,0.05);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition: 0.3s ease;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body { font-family: var(--font-cn); color: var(--text-body); background: var(--bg-light); line-height: 1.7; letter-spacing: 0.02em; -webkit-font-smoothing: antialiased; }
        a { text-decoration: none; color: inherit; transition: color var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1320px; padding-left: 24px; padding-right: 24px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bg-white);
            box-shadow: var(--shadow-nav);
            border-bottom: 1px solid var(--border-color);
            height: 64px;
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.04em;
        }
        .logo span { color: var(--accent); }
        .main-nav { display: flex; align-items: center; gap: 2rem; }
        .main-nav a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .main-nav a:hover { color: var(--accent); }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: var(--radius-nav);
        }
        .main-nav .nav-icon { color: var(--text-muted); font-size: 1.1rem; padding: 6px 8px; cursor: pointer; }
        .main-nav .nav-icon:hover { color: var(--accent); }
        .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; }
        .hamburger span { display: block; width: 24px; height: 2px; background: var(--primary); border-radius: 2px; transition: var(--transition); }

        /* ===== Hero ===== */
        .tech-hero {
            background: var(--primary);
            background-image: linear-gradient(135deg, #1B2A4A 0%, #2C4A6E 100%), url('/assets/images/backpic/back-1.png');
            background-blend-mode: overlay;
            background-size: cover;
            background-position: center;
            padding: 100px 0 90px;
            position: relative;
            min-height: 60vh;
            display: flex;
            align-items: center;
        }
        .tech-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27,42,74,0.88) 0%, rgba(44,74,110,0.78) 100%);
            z-index: 1;
        }
        .tech-hero .container { position: relative; z-index: 2; }
        .tech-hero h1 {
            font-size: 2.8rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 20px;
            max-width: 780px;
        }
        .tech-hero h1 span { color: var(--accent); }
        .tech-hero .hero-sub {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.85);
            max-width: 620px;
            margin-bottom: 36px;
            line-height: 1.6;
        }
        .tech-hero .btn-primary-custom {
            background: var(--accent);
            color: #fff;
            padding: 14px 42px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1.05rem;
            border: none;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .tech-hero .btn-primary-custom:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212,168,67,0.35);
            color: #fff;
        }
        .tech-hero .btn-primary-custom i { font-size: 0.9rem; }

        /* ===== Section通用 ===== */
        .section-padding { padding: 80px 0; }
        .section-title {
            font-size: 2rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 16px;
            text-align: center;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px auto;
            line-height: 1.7;
        }
        .bg-white-section { background: var(--bg-white); }

        /* ===== 核心服务卡片 ===== */
        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 36px 28px 32px;
            text-align: center;
            height: 100%;
            transition: all var(--transition);
            border: 1px solid rgba(0,0,0,0.02);
        }
        .service-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .service-card .icon-wrap {
            width: 64px;
            height: 64px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: var(--accent);
            font-size: 1.6rem;
        }
        .service-card h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .service-card p {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 流程步骤 ===== */
        .step-card {
            text-align: center;
            padding: 24px 16px;
            position: relative;
        }
        .step-card .step-num {
            width: 56px;
            height: 56px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            color: var(--accent);
            font-weight: 700;
            font-size: 1.3rem;
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .step-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.5rem;
        }

        /* ===== 场景卡片 ===== */
        .scene-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            height: 100%;
            transition: all var(--transition);
            border: 1px solid rgba(0,0,0,0.02);
        }
        .scene-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scene-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
        }
        .scene-card .card-body {
            padding: 24px 24px 28px;
        }
        .scene-card .card-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .scene-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .scene-card .tag {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
            margin-top: 12px;
        }

        /* ===== FAQ ===== */
        .faq-section { background: var(--bg-white); }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 18px 0;
        }
        .faq-item:first-child { border-top: 1px solid var(--border-color); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            color: var(--primary);
            padding: 4px 0;
            user-select: none;
        }
        .faq-question i {
            color: var(--accent);
            transition: transform var(--transition);
            font-size: 0.9rem;
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-question.open i { transform: rotate(90deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px 0 0;
            color: var(--text-body);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding-top: 14px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1B2A4A 0%, #2C4A6E 100%);
            padding: 80px 0;
            text-align: center;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.8);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 36px;
        }
        .cta-section .btn-cta {
            background: #fff;
            color: var(--primary);
            padding: 16px 52px;
            border-radius: 18px;
            font-weight: 700;
            font-size: 1.1rem;
            border: none;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-cta:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(212,168,67,0.4);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.75);
            padding: 56px 0 28px;
            font-size: 0.88rem;
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer .footer-brand span { color: var(--accent); }
        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }
        .site-footer .footer-links { list-style: none; padding: 0; margin: 0; }
        .site-footer .footer-links li { margin-bottom: 10px; }
        .site-footer .footer-links a {
            color: rgba(255,255,255,0.7);
            transition: color var(--transition);
        }
        .site-footer .footer-links a:hover { color: var(--accent); }
        .site-footer .footer-links i { color: var(--accent); width: 20px; }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            margin-top: 36px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.5);
        }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .main-nav { gap: 1.2rem; }
            .main-nav a { font-size: 0.82rem; }
            .tech-hero h1 { font-size: 2.2rem; }
            .section-padding { padding: 60px 0; }
            .section-title { font-size: 1.7rem; }
            .step-arrow { display: none; }
            .cta-section h2 { font-size: 1.8rem; }
        }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 20px 24px;
                gap: 0.8rem;
                box-shadow: 0 8px 24px rgba(0,0,0,0.1);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                border-bottom: 2px solid var(--accent);
                z-index: 1040;
            }
            .main-nav.open { transform: translateY(0); opacity: 1; }
            .main-nav a { padding: 10px 0; font-size: 1rem; border-bottom: 1px solid var(--border-color); width: 100%; }
            .main-nav a.active::after { display: none; }
            .main-nav a.active { color: var(--accent); font-weight: 600; }
            .main-nav .nav-icon { display: none; }
            .tech-hero { min-height: 50vh; padding: 70px 0 60px; }
            .tech-hero h1 { font-size: 1.8rem; }
            .tech-hero .hero-sub { font-size: 1rem; }
            .section-padding { padding: 48px 0; }
            .section-title { font-size: 1.5rem; }
            .section-subtitle { font-size: 0.95rem; margin-bottom: 32px; }
            .service-card { padding: 28px 20px 24px; }
            .cta-section { padding: 56px 0; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section .btn-cta { padding: 14px 36px; font-size: 1rem; }
            .site-footer .footer-brand { font-size: 1.2rem; }
        }
        @media (max-width: 576px) {
            .container { padding-left: 16px; padding-right: 16px; }
            .tech-hero h1 { font-size: 1.5rem; }
            .tech-hero .hero-sub { font-size: 0.92rem; }
            .tech-hero .btn-primary-custom { padding: 12px 28px; font-size: 0.95rem; }
            .section-title { font-size: 1.3rem; }
            .service-card .icon-wrap { width: 52px; height: 52px; font-size: 1.3rem; }
            .step-card .step-num { width: 44px; height: 44px; font-size: 1.1rem; }
            .faq-question { font-size: 0.92rem; }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1B2A4A;
            --primary-light: #2C4A6E;
            --accent: #D4A843;
            --accent-hover: #c49a3a;
            --bg-light: #F5F6FA;
            --bg-white: #FFFFFF;
            --text-dark: #1B2A4A;
            --text-body: #4A4A5A;
            --text-muted: #8E8E9E;
            --border-color: #E0E0E8;
            --success: #2A9D8F;
            --danger: #E76F51;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 18px;
            --shadow-sm: 0 2px 10px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --transition: all 0.3s ease;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 1rem;
            font-weight: 400;
            line-height: 1.6;
            color: var(--text-body);
            background: var(--bg-light);
            letter-spacing: 0.02em;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            letter-spacing: 0.03em;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1320px;
            padding-left: 24px;
            padding-right: 24px;
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            height: 64px;
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.04em;
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .logo span {
            color: var(--accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .main-nav a {
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-dark);
            padding-bottom: 4px;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--accent);
        }
        .main-nav a.active {
            color: var(--accent);
            border-bottom: 2px solid var(--accent);
        }
        .main-nav a.nav-icon {
            font-size: 1.1rem;
            color: var(--text-muted);
            border-bottom: none;
            padding-bottom: 0;
        }
        .main-nav a.nav-icon:hover {
            color: var(--accent);
        }
        /* 汉堡菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 0;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 20px 24px;
                gap: 1rem;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                display: none;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                font-size: 1rem;
                padding: 8px 0;
                border-bottom: none;
            }
            .main-nav a.active {
                border-bottom: none;
                color: var(--accent);
            }
            .main-nav a.nav-icon {
                display: none;
            }
        }
        @media (min-width: 769px) {
            .main-nav {
                display: flex !important;
            }
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 40vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, #1B2A4A 0%, #2C4A6E 100%);
            background-size: cover;
            background-position: center;
            padding: 80px 24px;
            overflow: hidden;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27,42,74,0.88) 0%, rgba(44,74,110,0.78) 100%);
            z-index: 1;
        }
        .category-hero .hero-bg-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .category-hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.85);
            margin-bottom: 28px;
            max-width: 650px;
            margin-left: auto;
            margin-right: auto;
        }
        .category-hero .btn-hero {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            padding: 14px 40px;
            border-radius: var(--radius-md);
            font-size: 1.05rem;
            transition: var(--transition);
            border: none;
            box-shadow: 0 4px 14px rgba(212,168,67,0.35);
        }
        .category-hero .btn-hero:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212,168,67,0.45);
            color: #fff;
        }
        @media (max-width: 768px) {
            .category-hero {
                min-height: 50vh;
                padding: 60px 16px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 576px) {
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero .btn-hero {
                padding: 12px 30px;
                font-size: 0.95rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
        }
        .section-title {
            font-size: 2rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 40px;
        }
        .section-title-center {
            text-align: center;
        }
        .section-subtitle-center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ===== 卡片 ===== */
        .custom-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            border: none;
        }
        .custom-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .custom-card .card-img-top {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .custom-card .card-body {
            padding: 24px 28px;
        }
        .custom-card .card-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .custom-card .card-body p {
            font-size: 0.95rem;
            color: var(--text-body);
            margin-bottom: 0;
        }
        .custom-card .card-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
        }
        @media (max-width: 576px) {
            .custom-card .card-body {
                padding: 18px 20px;
            }
            .custom-card .card-img-top {
                height: 160px;
            }
        }

        /* ===== 优势卡片（三列） ===== */
        .advantage-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 32px 28px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
        }
        .advantage-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .advantage-card .icon-circle {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: var(--accent);
        }
        .advantage-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .advantage-card p {
            font-size: 0.95rem;
            color: var(--text-body);
            margin-bottom: 0;
        }

        /* ===== 流程步骤 ===== */
        .step-card {
            text-align: center;
            padding: 24px 16px;
            position: relative;
        }
        .step-card .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent);
            font-size: 1.4rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            border: 3px solid var(--accent);
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-body);
            margin-bottom: 0;
        }
        .step-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .step-connector {
                display: block;
                position: absolute;
                top: 40px;
                right: -30px;
                width: 60px;
                height: 2px;
                background: var(--accent);
                opacity: 0.4;
            }
        }

        /* ===== FAQ 手风琴 ===== */
        .faq-section {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 28px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-dark);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: var(--bg-light);
        }
        .faq-question .faq-toggle {
            font-size: 1.2rem;
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.active .faq-toggle {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 28px 20px;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }
        @media (max-width: 576px) {
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.9rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1B2A4A 0%, #D4A843 100%);
            padding: 80px 24px;
            text-align: center;
            position: relative;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.85);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-cta {
            display: inline-block;
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            padding: 16px 48px;
            border-radius: var(--radius-xl);
            font-size: 1.1rem;
            transition: var(--transition);
            border: none;
            box-shadow: 0 4px 16px rgba(0,0,0,0.15);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(0,0,0,0.2);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 16px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .btn-cta {
                padding: 14px 36px;
                font-size: 1rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0F1A2E;
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px;
            font-size: 0.875rem;
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand span {
            color: var(--accent);
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .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: rgba(255,255,255,0.7);
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            margin-top: 32px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.5);
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 20px;
            }
            .site-footer .footer-brand {
                font-size: 1.3rem;
            }
        }

        /* ===== 分隔线间距 ===== */
        .divider-light {
            height: 1px;
            background: var(--border-color);
            margin: 0;
        }

        /* ===== 响应式调整 ===== */
        @media (max-width: 576px) {
            .section-padding {
                padding: 40px 0;
            }
            .advantage-card {
                padding: 24px 18px;
            }
            .advantage-card .icon-circle {
                width: 56px;
                height: 56px;
                font-size: 1.4rem;
            }
        }

        /* ===== Bootstrap 覆盖 ===== */
        .btn {
            border-radius: var(--radius-md);
            font-weight: 500;
            transition: var(--transition);
        }
        .btn-primary {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(212,168,67,0.35);
            color: #fff;
        }
        .btn-outline-primary {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }
        .bg-primary-dark {
            background: var(--primary);
        }