/* roulang page: index */
:root{
    --primary:#1e3a5f;--primary-dark:#12283f;--accent:#f97316;--accent-light:#fff3ea;
    --bg:#f6f8fb;--white:#ffffff;--text:#1a2233;--text-light:#5c6b7e;--border:#e2e8f0;
    --radius:16px;--radius-lg:24px;--shadow:0 10px 30px rgba(16,42,67,.08);
    --shadow-hover:0 20px 45px rgba(16,42,67,.14);--transition:all .3s ease;
    --section-space:80px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;height:auto;display:block}
button,input{font-family:inherit}
.container{max-width:1200px}
.section-padding{padding:var(--section-space) 0}
.text-accent{color:var(--accent)}
.bg-white{background:var(--white)}

/* 导航 */
.navbar-custom{
    position:fixed;top:16px;left:50%;transform:translateX(-50%);width:calc(100% - 32px);max-width:1200px;
    background:rgba(255,255,255,.9);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    border-radius:60px;padding:10px 16px;box-shadow:0 8px 32px rgba(16,42,67,.12);z-index:1050;border:1px solid rgba(255,255,255,.6);
}
.navbar-custom .navbar-brand{font-size:1.25rem;font-weight:800;color:var(--primary);display:flex;align-items:center;gap:4px}
.navbar-custom .navbar-brand span{color:var(--accent)}
.navbar-custom .nav-link{font-size:.95rem;font-weight:500;color:var(--text);padding:8px 18px;border-radius:40px;position:relative}
.navbar-custom .nav-link:hover{color:var(--accent);background:var(--accent-light)}
.navbar-custom .nav-link.active{color:#fff;background:var(--primary)}
.navbar-custom .btn-accent{background:var(--accent);border:none;color:#fff;font-weight:600;padding:10px 24px;border-radius:40px;transition:var(--transition)}
.navbar-custom .btn-accent:hover{background:#e2600f;transform:translateY(-2px);box-shadow:0 8px 20px rgba(249,115,22,.3)}
.navbar-toggler{border:none;outline:none}
.navbar-toggler:focus{box-shadow:none}
@media(max-width:991px){
    .navbar-custom{top:12px;border-radius:24px;padding:10px 14px}
    .navbar-collapse{padding-top:12px}
    .navbar-custom .nav-link{padding:10px 16px}
    .navbar-custom .btn-accent{display:inline-block;margin-top:8px}
}
@media(max-width:520px){
    .navbar-custom{width:calc(100% - 20px);padding:8px 12px}
    .navbar-custom .navbar-brand{font-size:1.05rem}
}

/* Hero */
.hero{
    min-height:100vh;display:flex;align-items:center;justify-content:center;position:relative;
    background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    color:#fff;padding:140px 0 80px;
}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(18,40,63,.82),rgba(30,58,95,.55),rgba(0,0,0,.35));}
.hero .container{position:relative;z-index:2;text-align:center;max-width:900px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.16);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.25);border-radius:40px;padding:8px 22px;font-size:.85rem;font-weight:500;margin-bottom:24px}
.hero h1{font-size:3.4rem;font-weight:900;letter-spacing:2px;margin-bottom:18px;text-shadow:0 4px 20px rgba(0,0,0,.3)}
.hero .lead{font-size:1.2rem;max-width:640px;margin:0 auto 36px;color:rgba(255,255,255,.9)}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-hero{display:inline-flex;align-items:center;gap:8px;padding:14px 36px;border-radius:50px;font-weight:600;font-size:1rem;transition:var(--transition)}
.btn-hero-primary{background:var(--accent);color:#fff;border:2px solid var(--accent)}
.btn-hero-primary:hover{background:#e2600f;border-color:#e2600f;transform:translateY(-3px);box-shadow:0 12px 30px rgba(249,115,22,.4);color:#fff}
.btn-hero-outline{border:2px solid rgba(255,255,255,.7);color:#fff;background:rgba(255,255,255,.08);backdrop-filter:blur(4px)}
.btn-hero-outline:hover{border-color:#fff;background:rgba(255,255,255,.16);transform:translateY(-3px);color:#fff}
.hero-metrics{display:flex;justify-content:center;gap:30px;margin-top:60px;flex-wrap:wrap}
.metric-item{background:rgba(255,255,255,.12);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.2);border-radius:var(--radius);padding:18px 30px;min-width:130px;text-align:center}
.metric-item strong{font-size:1.8rem;font-weight:800;display:block;color:#ffd9b3}
.metric-item span{font-size:.82rem;color:rgba(255,255,255,.8)}
@media(max-width:768px){
    .hero h1{font-size:2.2rem}
    .hero .lead{font-size:1rem}
    .hero-metrics{gap:12px;margin-top:40px}
    .metric-item{min-width:45%;padding:14px 16px}
}
@media(max-width:520px){
    .hero{padding-top:120px}
    .hero h1{font-size:1.8rem}
    .hero-actions{flex-direction:column;width:100%}
    .btn-hero{justify-content:center;width:100%}
}

/* 板块标题 */
.section-header{text-align:center;max-width:700px;margin:0 auto 48px}
.section-header .eyebrow{display:inline-block;background:var(--accent-light);color:var(--accent);font-size:.8rem;font-weight:700;letter-spacing:2px;padding:6px 18px;border-radius:30px;margin-bottom:14px}
.section-header h2{font-size:2.2rem;font-weight:800;color:var(--primary);margin-bottom:12px}
.section-header p{color:var(--text-light);font-size:1.02rem}
@media(max-width:768px){
    .section-header h2{font-size:1.7rem}
}

/* 特色卡片 */
.feature-card{background:var(--white);border-radius:var(--radius-lg);padding:36px 28px;border:1px solid var(--border);transition:var(--transition);height:100%;box-shadow:var(--shadow)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.feature-icon{width:64px;height:64px;border-radius:18px;background:var(--accent-light);display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:1.5rem;color:var(--accent)}
.feature-card h3{font-size:1.18rem;font-weight:700;color:var(--primary);margin-bottom:10px}
.feature-card p{color:var(--text-light);font-size:.92rem;line-height:1.75}

/* 分类入口 */
.category-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;height:260px;display:block;color:#fff;box-shadow:var(--shadow);transition:var(--transition)}
.category-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.category-card:hover img{transform:scale(1.06)}
.category-card .overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.1) 30%,rgba(18,40,63,.85));display:flex;flex-direction:column;justify-content:flex-end;padding:28px}
.category-card h3{font-size:1.4rem;font-weight:800;margin-bottom:4px}
.category-card p{font-size:.85rem;color:rgba(255,255,255,.9);margin-bottom:10px}
.category-card .tag{display:inline-block;background:var(--accent);font-size:.75rem;font-weight:600;padding:4px 16px;border-radius:20px;width:fit-content}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover)}

/* 新闻列表 */
.news-list .news-item{background:var(--white);border-radius:var(--radius);padding:22px 24px;border:1px solid var(--border);margin-bottom:14px;transition:var(--transition);display:flex;flex-direction:column;gap:6px;box-shadow:0 2px 8px rgba(16,42,67,.04)}
.news-item:hover{transform:translateX(8px);box-shadow:var(--shadow);border-color:var(--accent)}
.news-item .meta{display:flex;align-items:center;gap:12px;font-size:.8rem;color:var(--text-light)}
.news-item .category-pill{background:var(--accent-light);color:var(--accent);font-weight:600;padding:3px 14px;border-radius:20px}
.news-item h3{font-size:1.05rem;font-weight:700;color:var(--text)}
.news-item p{font-size:.9rem;color:var(--text-light);margin:0}
.news-item time{font-size:.78rem;color:var(--text-light)}

/* 统计块 */
.stats-block{background:var(--primary);border-radius:var(--radius-lg);padding:48px 40px;color:#fff;position:relative;overflow:hidden}
.stats-block::before{content:'';position:absolute;top:-80px;right:-80px;width:240px;height:240px;border-radius:50%;background:rgba(255,255,255,.06)}
.stats-block::after{content:'';position:absolute;bottom:-100px;left:-60px;width:200px;height:200px;border-radius:50%;background:rgba(249,115,22,.15)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;z-index:1}
.stat-item{text-align:center;padding:16px}
.stat-item .number{font-size:2.6rem;font-weight:900;color:var(--accent);line-height:1.2}
.stat-item .label{font-size:.9rem;color:rgba(255,255,255,.85);margin-top:6px}
@media(max-width:768px){
    .stats-grid{grid-template-columns:repeat(2,1fr)}
    .stats-block{padding:30px 20px}
}
@media(max-width:520px){
    .stat-item .number{font-size:1.8rem}
}

/* 内容卡片 */
.content-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:var(--transition);height:100%;box-shadow:var(--shadow)}
.content-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover)}
.content-card .img-wrap{height:190px;overflow:hidden}
.content-card .img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.content-card:hover .img-wrap img{transform:scale(1.05)}
.content-card .card-body{padding:24px;display:flex;flex-direction:column;gap:10px}
.content-card .card-body h3{font-size:1.08rem;font-weight:700;color:var(--primary);line-height:1.5}
.content-card .card-body p{font-size:.86rem;color:var(--text-light);margin:0;line-height:1.7}
.card-footer-link{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:.86rem}
.card-footer-link:hover{color:#e2600f;gap:10px}

/* 对比区 */
.compare-section{background:url('/assets/images/backpic/back-2.png') center/cover fixed no-repeat;position:relative;color:#fff}
.compare-section::before{content:'';position:absolute;inset:0;background:rgba(18,40,63,.88)}
.compare-wrap{position:relative;z-index:1}
.compare-table{width:100%;border-collapse:separate;border-spacing:0;background:rgba(255,255,255,.08);backdrop-filter:blur(10px);border-radius:var(--radius-lg);overflow:hidden}
.compare-table th,.compare-table td{padding:16px 20px;text-align:center;border-bottom:1px solid rgba(255,255,255,.12);font-size:.92rem}
.compare-table th{background:rgba(255,255,255,.14);font-weight:700;color:#ffd9b3}
.compare-table tr:last-child td{border-bottom:none}
.compare-table .rating-star{color:#ffc107;letter-spacing:2px}
.rating-label{font-size:.85rem;color:rgba(255,255,255,.85);margin-top:4px}
@media(max-width:520px){
    .compare-table th,.compare-table td{padding:10px 8px;font-size:.78rem}
}

/* FAQ */
.faq-item{background:var(--white);border-radius:var(--radius);border:1px solid var(--border);padding:22px 26px;margin-bottom:12px;cursor:pointer;transition:var(--transition)}
.faq-item:hover{border-color:var(--accent);box-shadow:var(--shadow)}
.faq-item .faq-q{font-weight:700;color:var(--primary);font-size:1.05rem;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-item .faq-q i{color:var(--accent);font-size:1.1rem;transition:transform .3s}
.faq-item.active .faq-q i{transform:rotate(180deg)}
.faq-item .faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;color:var(--text-light);font-size:.92rem;line-height:1.8}
.faq-item.active .faq-a{max-height:300px;padding-top:12px}

/* CTA */
.cta-block{background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:var(--radius-lg);padding:56px 48px;color:#fff;position:relative;overflow:hidden;text-align:center}
.cta-block::before{content:'';position:absolute;top:-70px;left:-40px;width:200px;height:200px;border-radius:50%;background:rgba(249,115,22,.25)}
.cta-block::after{content:'';position:absolute;bottom:-80px;right:-20px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.05)}
.cta-block h2{font-size:2rem;font-weight:800;margin-bottom:12px;position:relative;z-index:1}
.cta-block p{font-size:1rem;color:rgba(255,255,255,.9);max-width:540px;margin:0 auto 28px;position:relative;z-index:1}
.cta-block .btn{position:relative;z-index:1}
@media(max-width:520px){
    .cta-block{padding:36px 20px}
    .cta-block h2{font-size:1.5rem}
}

/* 页脚 */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.8);padding:60px 0 30px;margin-top:80px}
.site-footer .footer-brand{font-size:1.4rem;font-weight:800;color:#fff}
.site-footer .footer-brand span{color:var(--accent)}
.site-footer p{font-size:.88rem}
.footer-links{list-style:none;padding:0}
.footer-links li{margin-bottom:8px}
.footer-links a{font-size:.9rem;color:rgba(255,255,255,.7);transition:var(--transition)}
.footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:22px;margin-top:36px;font-size:.8rem;color:rgba(255,255,255,.5);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.social-icon{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.1);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:.9rem;transition:var(--transition);margin-right:8px}
.social-icon:hover{background:var(--accent);color:#fff;transform:translateY(-3px)}

/* 按钮通用 */
.btn{transition:var(--transition);border-radius:12px;font-weight:600}
.btn-primary{background:var(--primary);border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);box-shadow:0 8px 20px rgba(30,58,95,.3)}
.btn-outline-primary{border-color:var(--primary);color:var(--primary)}
.btn-outline-primary:hover{background:var(--primary);color:#fff}

/* 响应式通用 */
@media(max-width:768px){
    :root{--section-space:56px}
    .section-padding{padding:var(--section-space) 0}
    .site-footer{text-align:left}
}

/* roulang page: category1 */
:root {
            --primary: #0f2a43;
            --primary-light: #1e4068;
            --primary-dark: #081b2b;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --bg: #f4f6fb;
            --bg-alt: #eef1f7;
            --white: #ffffff;
            --text: #1e293b;
            --text-muted: #5c6b82;
            --border: #e2e8f0;
            --radius-sm: 10px;
            --radius: 18px;
            --radius-lg: 28px;
            --shadow-sm: 0 2px 10px rgba(15, 42, 67, .06);
            --shadow: 0 10px 35px rgba(15, 42, 67, .10);
            --shadow-lg: 0 25px 60px rgba(15, 42, 67, .16);
            --space: 72px;
            --space-sm: 40px;
            --transition: all .25s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.65;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: 76px 0;
            position: relative;
        }
        .section-head {
            max-width: 720px;
            margin-bottom: 48px;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-head .tagline {
            display: inline-block;
            background: rgba(245, 158, 11, .12);
            color: var(--accent-hover);
            font-size: .85rem;
            font-weight: 700;
            letter-spacing: .04em;
            padding: 5px 18px;
            border-radius: 40px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .section-title {
            font-size: clamp(1.75rem, 3vw, 2.4rem);
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.02rem;
            line-height: 1.7;
        }

        /* ===== Buttons ===== */
        .btn-accent {
            background: var(--accent);
            border: none;
            color: #fff;
            font-weight: 700;
            padding: 10px 28px;
            border-radius: 50px;
            box-shadow: 0 4px 18px rgba(245, 158, 11, .35);
            transition: var(--transition);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(217, 119, 6, .4);
            outline: none;
        }
        .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, .7);
            color: #fff;
            font-weight: 600;
            padding: 10px 30px;
            border-radius: 50px;
            background: transparent;
            transition: var(--transition);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .14);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-primary-custom {
            background: var(--primary);
            border: none;
            color: #fff;
            font-weight: 600;
            padding: 12px 30px;
            border-radius: 50px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        /* ===== Floating Pill Navigation ===== */
        .nav-wrapper {
            position: sticky;
            top: 16px;
            z-index: 1050;
            padding: 0 18px;
            pointer-events: none;
        }
        .nav-wrapper .navbar-custom {
            pointer-events: auto;
        }
        .navbar-custom {
            max-width: 1280px;
            margin: 0 auto;
            background: rgba(255, 255, 255, .85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, .7);
            border-radius: 60px;
            box-shadow: 0 10px 40px rgba(15, 42, 67, .10);
            padding: 10px 24px;
            transition: var(--transition);
        }
        .navbar-custom .navbar-brand {
            font-size: 1.22rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: .01em;
        }
        .navbar-brand span {
            color: var(--accent);
            font-weight: 600;
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            font-size: .95rem;
            color: var(--text);
            padding: 8px 16px;
            border-radius: 40px;
            transition: var(--transition);
            margin: 0 2px;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: var(--accent-hover);
            background: rgba(245, 158, 11, .08);
        }
        .navbar-nav .nav-link.active {
            color: #fff;
            background: var(--accent);
            box-shadow: 0 4px 12px rgba(245, 158, 11, .3);
        }
        .navbar-custom .btn-accent {
            padding: 8px 24px;
        }
        .navbar-toggler {
            border: none;
            box-shadow: none;
            padding: 6px 8px;
            border-radius: 10px;
            background: rgba(15, 42, 67, .06);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(245, 158, 11, .25);
        }
        .navbar-toggler-icon {
            width: 20px;
            height: 20px;
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15,42,67,.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 64vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #081b2b 0%, #122c4b 45%, #1e4068 100%);
            overflow: hidden;
            padding: 120px 0 80px;
            margin-top: -88px;
            border-radius: 0 0 36px 36px;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: .38;
            z-index: 0;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 80%, rgba(245, 158, 11, .15), transparent 60%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #fde68a;
            font-size: .88rem;
            font-weight: 700;
            letter-spacing: .04em;
            padding: 6px 20px;
            border-radius: 40px;
            margin-bottom: 22px;
            backdrop-filter: blur(6px);
        }
        .category-hero h1 {
            font-size: clamp(2.4rem, 5vw, 3.8rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: .01em;
        }
        .category-hero h1 span {
            color: var(--accent);
        }
        .category-hero .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, .88);
            max-width: 600px;
            margin-bottom: 30px;
            line-height: 1.75;
        }
        .hero-actions .btn {
            margin-right: 10px;
            margin-bottom: 10px;
            min-width: 160px;
        }

        /* ===== News Cards ===== */
        .latest-section {
            background: var(--bg);
        }
        .news-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-6px);
            border-color: rgba(245, 158, 11, .35);
        }
        .news-card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #dfe6ef;
        }
        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .news-card:hover .news-card-img img {
            transform: scale(1.05);
        }
        .news-card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 42, 67, .78);
            color: #fde68a;
            font-size: .78rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 30px;
            backdrop-filter: blur(4px);
            letter-spacing: .03em;
        }
        .news-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card-cat {
            font-size: .8rem;
            font-weight: 700;
            color: var(--accent-hover);
            text-transform: uppercase;
            letter-spacing: .06em;
            margin-bottom: 8px;
        }
        .news-card-title {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.5;
            margin-bottom: 12px;
            transition: var(--transition);
        }
        .news-card-title a:hover {
            color: var(--accent-hover);
        }
        .news-card-meta {
            margin-top: auto;
            font-size: .85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .news-card-meta i {
            color: var(--accent);
            margin-right: 4px;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--primary);
            background-image: linear-gradient(135deg, rgba(8, 27, 43, .95), rgba(15, 42, 67, .9)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: 70px 0;
        }
        .stat-item {
            text-align: center;
            padding: 30px 18px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, .07);
            border: 1px solid rgba(255, 255, 255, .1);
            backdrop-filter: blur(6px);
            transition: var(--transition);
            height: 100%;
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, .12);
            transform: translateY(-4px);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-label {
            color: rgba(255, 255, 255, .85);
            font-size: .95rem;
            font-weight: 500;
        }

        /* ===== Ranking ===== */
        .rank-section {
            background: var(--bg);
        }
        .rank-list {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .rank-item {
            margin-bottom: 26px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }
        .rank-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }
        .rank-info {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 10px;
            flex-wrap: wrap;
            gap: 8px;
        }
        .rank-num {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--accent);
            margin-right: 14px;
            min-width: 32px;
        }
        .rank-name {
            font-weight: 700;
            color: var(--primary);
            font-size: 1.02rem;
            flex: 1;
        }
        .rank-percent {
            font-weight: 700;
            color: var(--text-muted);
            font-size: .92rem;
        }
        .rank-bar {
            height: 8px;
            border-radius: 20px;
            background: rgba(15, 42, 67, .06);
            overflow: visible;
            position: relative;
        }
        .rank-bar-fill {
            background: linear-gradient(90deg, var(--accent), #fbbf24);
            border-radius: 20px;
            height: 100%;
            box-shadow: 0 2px 8px rgba(245, 158, 11, .4);
            position: relative;
        }
        .rank-bar-fill::after {
            content: '';
            position: absolute;
            right: 0;
            top: -2px;
            width: 12px;
            height: 12px;
            background: #fff;
            border: 3px solid var(--accent);
            border-radius: 50%;
        }

        /* ===== Event Categories ===== */
        .event-cats-section {
            background: var(--white);
        }
        .event-cat-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .event-cat-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-6px);
            border-color: rgba(245, 158, 11, .35);
        }
        .event-cat-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
        }
        .event-cat-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .event-cat-card:hover .event-cat-img img {
            transform: scale(1.04);
        }
        .event-cat-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .event-cat-title {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .event-cat-desc {
            color: var(--text-muted);
            font-size: .95rem;
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }
        .event-cat-link {
            font-weight: 700;
            color: var(--accent-hover);
            font-size: .95rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .event-cat-link:hover {
            gap: 10px;
            color: var(--primary);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
        }
        .accordion {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 16px !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            padding: 0;
        }
        .accordion-item:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, .12);
        }
        .accordion-button {
            background: var(--white);
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            padding: 20px 26px;
            border: none;
            box-shadow: none;
            transition: var(--transition);
            border-radius: 16px !important;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(245, 158, 11, .07);
            color: var(--accent-hover);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
        }
        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23f59e0b'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            transition: transform .3s ease;
        }
        .accordion-body {
            color: var(--text-muted);
            padding: 6px 26px 22px;
            line-height: 1.75;
            border-top: 1px dashed var(--border);
            margin-top: 4px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #081b2b, #122c4b);
            padding: 70px 0;
            border-radius: 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: .28;
        }
        .cta-card {
            position: relative;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: var(--radius-lg);
            padding: 52px 40px;
            text-align: center;
            backdrop-filter: blur(10px);
            max-width: 760px;
            margin: 0 auto;
            z-index: 1;
        }
        .cta-card h2 {
            color: #fff;
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-card p {
            color: rgba(255, 255, 255, .85);
            font-size: 1.05rem;
            margin-bottom: 28px;
        }
        .cta-buttons .btn {
            margin: 0 8px 10px;
            min-width: 170px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #081b2b;
            color: #94a3b8;
            padding: 56px 0 0;
            font-size: .95rem;
        }
        .site-footer .footer-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
        }
        .site-footer .footer-brand span {
            color: var(--accent);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: #94a3b8;
            transition: var(--transition);
            position: relative;
            padding-left: 0;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .social-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, .08);
            border-radius: 50%;
            color: #cbd5e1;
            margin-right: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .social-icon:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 22px 0;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: .88rem;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .nav-wrapper {
                top: 10px;
                padding: 0 12px;
            }
            .navbar-custom {
                border-radius: 40px;
                padding: 8px 18px;
            }
            .navbar-collapse {
                padding: 12px 8px 4px;
            }
            .navbar-nav .nav-link {
                padding: 10px 20px;
                margin: 3px 0;
                text-align: center;
            }
            .category-hero {
                min-height: 56vh;
                padding: 130px 0 60px;
                margin-top: -80px;
            }
            .hero-actions .btn {
                min-width: 140px;
            }
        }
        @media (max-width: 767.98px) {
            .section {
                padding: 52px 0;
            }
            .stat-number {
                font-size: 2rem;
            }
            .rank-list {
                padding: 24px;
            }
            .cta-card {
                padding: 34px 24px;
            }
        }
        @media (max-width: 575.98px) {
            .navbar-brand {
                font-size: 1.05rem;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero .hero-desc {
                font-size: .98rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .news-card-body {
                padding: 18px;
            }
            .event-cat-body {
                padding: 22px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .hero-actions .btn {
                width: 100%;
                min-width: auto;
                margin-right: 0;
            }
        }

/* roulang page: article */
:root {
  --clr-primary: #0f172a;
  --clr-primary-light: #1e293b;
  --clr-secondary: #f97316;
  --clr-secondary-light: #fb923c;
  --clr-accent: #10b981;
  --clr-bg: #f7f8fc;
  --clr-bg-dark: #0b1426;
  --clr-card: #ffffff;
  --clr-text: #132238;
  --clr-text-light: #5a6b85;
  --clr-border: #e2e8f0;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
  --transition: all .25s ease;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--clr-text);
  background: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--clr-primary); margin-bottom: 0.75rem; }
p { margin-bottom: 1rem; }
input, button, textarea { font-family: inherit; }
.container { max-width: 1240px; }

/* ========== 导航 ========== */
.navbar-custom {
  position: sticky;
  top: 14px;
  z-index: 1050;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: 56px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.10);
  margin: 14px auto 0;
  width: calc(100% - 40px);
  max-width: 1360px;
  padding: 8px 28px;
}
.navbar-brand {
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--clr-primary);
  display: flex;
  align-items: center;
  gap: 2px;
  letter-spacing: -0.5px;
}
.navbar-brand span { color: var(--clr-secondary); font-weight: 800; }
.navbar-brand:hover { color: var(--clr-primary); }
.navbar-custom .nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--clr-text);
  padding: 8px 18px;
  border-radius: 40px;
  transition: var(--transition);
  position: relative;
}
.navbar-custom .nav-link:hover { color: var(--clr-secondary); background: rgba(249, 115, 22, 0.08); }
.navbar-custom .nav-link.active { background: var(--clr-primary); color: #fff; box-shadow: 0 6px 16px rgba(15,23,42,0.25); }
.btn-accent {
  background: var(--clr-secondary);
  border: none;
  color: #fff;
  font-weight: 700;
  padding: 10px 24px;
  border-radius: 40px;
  transition: var(--transition);
  box-shadow: 0 6px 18px rgba(249, 115, 22, 0.3);
}
.btn-accent:hover { background: #e25f0a; color: #fff; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(249,115,22,0.35); }
.btn-outline-light-custom {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,0.65);
  color: #fff;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 40px;
  transition: var(--transition);
}
.btn-outline-light-custom:hover { background: rgba(255,255,255,0.14); color: #fff; }
.navbar-toggler { border: none; padding: 4px 8px; }
.navbar-toggler:focus { box-shadow: none; }
.navbar-toggler-icon {
  display: inline-block;
  width: 1.4em;
  height: 1.4em;
  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, 23, 42, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
@media (max-width: 991.98px) {
  .navbar-custom { border-radius: 24px; padding: 10px 18px; }
  .navbar-custom .navbar-collapse { padding-top: 14px; padding-bottom: 10px; }
  .navbar-custom .nav-link { padding: 12px 18px; border-radius: 14px; }
  .navbar-custom .btn-accent { margin-top: 8px; display: inline-block; }
}

/* ========== 页面 Hero ========== */
.page-hero {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: center;
  padding: 96px 0 76px;
  background-size: cover;
  background-position: center;
  color: #fff;
  margin-top: 8px;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,20,38,0.86) 0%, rgba(15,23,42,0.62) 55%, rgba(249,115,22,0.22) 100%);
}
.page-hero .container { position: relative; z-index: 2; }
.hero-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 40px;
  padding: 6px 18px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 20px;
  backdrop-filter: blur(6px);
}
.hero-breadcrumb a:hover { color: var(--clr-secondary-light); }
.hero-breadcrumb i { font-size: 0.7rem; opacity: 0.7; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(249,115,22,0.92);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  border-radius: 40px;
  padding: 5px 16px;
  margin-bottom: 14px;
  box-shadow: 0 6px 18px rgba(249,115,22,0.35);
}
.hero-title {
  color: #fff;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.25;
  font-weight: 800;
  max-width: 780px;
  letter-spacing: -0.5px;
  text-shadow: 0 4px 16px rgba(0,0,0,0.18);
}
.hero-lead {
  color: rgba(255,255,255,0.88);
  font-size: 1.05rem;
  max-width: 680px;
  margin-top: 12px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.82);
}
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta i { color: var(--clr-secondary-light); }

/* ========== 文章主体 ========== */
.article-section { padding: 56px 0 24px; }
.article-card {
  background: var(--clr-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border: 1px solid rgba(224, 230, 240, 0.5);
}
.article-hero-img { width: 100%; height: 420px; object-fit: cover; }
.article-body { padding: 2.25rem 2.5rem 2.5rem; }
.article-body h2 {
  font-size: 1.45rem;
  margin-top: 2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--clr-border);
}
.article-body h3 { font-size: 1.2rem; margin-top: 1.6rem; }
.article-body p { color: #30425a; }
.article-body ul, .article-body ol { padding-left: 1.4rem; margin-bottom: 1.25rem; }
.article-body li { margin-bottom: 0.5rem; color: #30425a; }
.article-body blockquote {
  background: #f8fafc;
  border-left: 4px solid var(--clr-secondary);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  color: #3f5470;
}
.article-not-found { padding: 3rem 2rem; text-align: center; }
.not-found-icon {
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: rgba(249,115,22,0.1);
  color: var(--clr-secondary);
  font-size: 2.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.article-tags { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--clr-border); display: flex; flex-wrap: wrap; gap: 8px; }
.article-tags .tag {
  background: #f1f5f9;
  border-radius: 40px;
  padding: 5px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text-light);
  transition: var(--transition);
}
.article-tags .tag:hover { background: rgba(249,115,22,0.12); color: var(--clr-secondary); }
.article-share {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 1.2rem;
  flex-wrap: wrap;
}
.article-share .share-label { font-weight: 600; font-size: 0.9rem; color: var(--clr-text-light); }
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #f1f5f9;
  color: var(--clr-text-light);
  font-size: 0.9rem;
  transition: var(--transition);
}
.share-btn:hover { background: var(--clr-primary); color: #fff; transform: translateY(-2px); }

/* ========== 侧边栏 ========== */
.sidebar-card {
  background: var(--clr-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(224,230,240,0.55);
  padding: 1.5rem 1.25rem;
  margin-bottom: 1.5rem;
}
.sidebar-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--clr-primary);
  margin-bottom: 1rem;
  padding-left: 14px;
  position: relative;
}
.sidebar-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 18px;
  background: var(--clr-secondary);
  border-radius: 4px;
}
.sidebar-text { font-size: 0.92rem; color: var(--clr-text-light); }
.sidebar-links { list-style: none; padding: 0; margin: 0; }
.sidebar-links li { border-bottom: 1px solid #eef2f7; }
.sidebar-links li:last-child { border-bottom: none; }
.sidebar-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 4px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--clr-text);
  border-radius: 8px;
  transition: var(--transition);
}
.sidebar-links a i { color: var(--clr-secondary); font-size: 0.8rem; transition: var(--transition); }
.sidebar-links a:hover { color: var(--clr-secondary); padding-left: 8px; }
.sidebar-links a:hover i { transform: translateX(3px); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a {
  background: #f1f5f9;
  border-radius: 40px;
  padding: 5px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text-light);
  transition: var(--transition);
}
.tag-cloud a:hover { background: var(--clr-primary); color: #fff; }
.sidebar-promo {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.25rem;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.sidebar-promo::after {
  content: '\f091';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: -10px;
  bottom: -16px;
  font-size: 5rem;
  opacity: 0.08;
  color: var(--clr-secondary);
}
.sidebar-promo h6 { color: #fff; font-weight: 800; }
.sidebar-promo p { color: rgba(255,255,255,0.72); font-size: 0.9rem; }
.sidebar-promo .promo-link {
  display: inline-block;
  background: var(--clr-secondary);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 40px;
  padding: 6px 18px;
  margin-top: 4px;
  transition: var(--transition);
}
.sidebar-promo .promo-link:hover { background: #e25f0a; transform: translateY(-2px); box-shadow: 0 6px 14px rgba(249,115,22,0.3); }

/* ========== 相关阅读 ========== */
.related-section { padding: 40px 0 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 28px; flex-wrap: wrap; }
.section-title { font-size: 1.6rem; font-weight: 800; margin-bottom: 0; letter-spacing: -0.4px; }
.section-subtitle { color: var(--clr-text-light); font-size: 0.95rem; margin-bottom: 0; }
.section-title-line {
  display: inline-block;
  width: 48px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--clr-secondary), var(--clr-secondary-light));
  margin-bottom: 8px;
}
.related-card {
  background: var(--clr-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(224,230,240,0.55);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.related-img { position: relative; overflow: hidden; height: 180px; }
.related-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.related-card:hover .related-img img { transform: scale(1.06); }
.related-img .cat-badge {
  position: absolute;
  left: 12px;
  top: 12px;
  background: rgba(249,115,22,0.95);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 30px;
  padding: 3px 12px;
  backdrop-filter: blur(4px);
}
.related-body { padding: 1.25rem 1.25rem 1.4rem; flex: 1; display: flex; flex-direction: column; }
.related-body h5 { font-size: 1.05rem; font-weight: 700; line-height: 1.45; margin-bottom: 8px; }
.related-body h5 a { color: var(--clr-primary); }
.related-body h5 a:hover { color: var(--clr-secondary); }
.related-body .related-meta { font-size: 0.8rem; color: var(--clr-text-light); display: flex; gap: 12px; margin-top: auto; }

/* ========== 分类导航卡片 ========== */
.category-section { padding: 56px 0 24px; }
.category-card {
  background: var(--clr-card);
  border-radius: var(--radius-md);
  border: 1px solid rgba(224,230,240,0.55);
  box-shadow: var(--shadow-sm);
  padding: 1.6rem 1.4rem;
  height: 100%;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(249,115,22,0.3); }
.category-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1rem;
  background: rgba(249,115,22,0.1);
  color: var(--clr-secondary);
}
.category-card:nth-child(2) .category-icon { background: rgba(16,185,129,0.12); color: var(--clr-accent); }
.category-card:nth-child(3) .category-icon { background: rgba(59,130,246,0.12); color: #3b82f6; }
.category-card h5 { font-weight: 800; margin-bottom: 0.5rem; }
.category-card p { font-size: 0.92rem; color: var(--clr-text-light); flex: 1; }
.category-card .card-link { font-weight: 700; font-size: 0.9rem; color: var(--clr-secondary); }
.category-card .card-link i { transition: var(--transition); }
.category-card .card-link:hover i { transform: translateX(4px); }

/* ========== FAQ ========== */
.faq-section { padding: 56px 0 24px; }
.faq-card { background: var(--clr-card); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: 3rem; }
.accordion-item {
  border: 1px solid var(--clr-border) !important;
  border-radius: var(--radius-md) !important;
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.accordion-item:last-child { margin-bottom: 0; }
.accordion-button {
  font-weight: 700;
  color: var(--clr-primary);
  background: #fff;
  padding: 1rem 1.25rem;
  font-size: 0.98rem;
  box-shadow: none !important;
}
.accordion-button:not(.collapsed) { background: rgba(249,115,22,0.06); color: var(--clr-secondary); }
.accordion-button:focus { box-shadow: none; }
.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23f97316'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.accordion-body { color: var(--clr-text-light); font-size: 0.95rem; padding: 0.5rem 1.25rem 1.25rem; }

/* ========== CTA ========== */
.cta-section { padding: 56px 0 0; }
.cta-box {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 55%, #35261f 100%);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(249,115,22,0.15);
  top: -120px;
  right: -80px;
}
.cta-box::after {
  content: '\f1e3';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 10rem;
  position: absolute;
  right: 30px;
  bottom: -30px;
  color: rgba(255,255,255,0.04);
}
.cta-box .container { position: relative; z-index: 2; }
.cta-box h2 { color: #fff; font-weight: 800; }
.cta-box p { color: rgba(255,255,255,0.78); max-width: 640px; }

/* ========== 页脚 ========== */
.site-footer {
  background: var(--clr-bg-dark);
  color: #a3aec0;
  padding: 60px 0 0;
  margin-top: 56px;
}
.footer-brand { color: #fff; font-weight: 800; font-size: 1.4rem; letter-spacing: -0.3px; }
.footer-brand span { color: var(--clr-secondary); }
.site-footer p { font-size: 0.92rem; color: #7d8ba1; }
.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  color: #a3aec0;
  font-size: 0.9rem;
  margin-right: 8px;
  transition: var(--transition);
}
.social-icon:hover { background: var(--clr-secondary); color: #fff; transform: translateY(-3px); }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: #7d8ba1; font-size: 0.9rem; transition: var(--transition); }
.footer-links a:hover { color: #fff; padding-left: 5px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  margin-top: 40px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: #67748b;
}

/* ========== 响应式 ========== */
@media (max-width: 1199.98px) {
  .navbar-custom { margin: 12px 16px 0; width: auto; }
}
@media (max-width: 991.98px) {
  .page-hero { min-height: 300px; padding: 80px 0 60px; }
  .article-body { padding: 1.75rem; }
  .article-hero-img { height: 320px; }
  .cta-box { padding: 40px 28px; }
}
@media (max-width: 767.98px) {
  .page-hero { min-height: 260px; padding: 70px 0 50px; }
  .hero-title { font-size: 1.7rem; }
  .article-body { padding: 1.25rem; }
  .article-hero-img { height: 220px; }
  .related-img { height: 200px; }
  .faq-card { padding: 1.5rem; }
  .cta-box { padding: 32px 20px; border-radius: 20px; }
  .navbar-custom { border-radius: 18px; width: calc(100% - 20px); margin: 10px auto 0; padding: 10px 14px; }
  .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
}
@media (max-width: 520px) {
  .navbar-custom { width: calc(100% - 16px); margin: 8px auto 0; }
  .navbar-brand { font-size: 1.2rem; }
  .hero-title { font-size: 1.5rem; }
  .hero-meta { gap: 8px 14px; font-size: 0.82rem; }
  .article-tags { gap: 6px; }
  .article-body { padding: 1rem; }
  .section-title { font-size: 1.3rem; }
}

/* roulang page: category2 */
:root {
    --primary: #0e1a2b;
    --primary-light: #16283f;
    --accent: #0ea5a4;
    --accent-hover: #0d9488;
    --accent-soft: #e0f4f3;
    --warm: #f59e0b;
    --bg: #f6f9fb;
    --bg-soft: #edf3f6;
    --card-bg: #ffffff;
    --text: #102a2e;
    --text-muted: #5d7178;
    --border: #dfe8ec;
    --radius: 18px;
    --radius-sm: 12px;
    --shadow: 0 10px 40px rgba(6, 44, 52, .08);
    --shadow-hover: 0 18px 50px rgba(6, 44, 52, .14);
    --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color .25s ease; }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
.container { max-width: 1200px; padding: 0 24px; }

/* ===== 导航 ===== */
.navbar-custom {
    position: sticky;
    top: 16px;
    margin: 12px auto 0;
    max-width: 1200px;
    width: calc(100% - 32px);
    border-radius: 60px;
    background: rgba(14, 26, 43, .86);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(255, 255, 255, .08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, .18);
    padding: 10px 12px;
    z-index: 1000;
}
.navbar-custom .navbar-brand {
    font-weight: 800;
    font-size: 1.35rem;
    color: #fff;
    letter-spacing: .5px;
}
.navbar-custom .navbar-brand span { color: #2dd4bf; font-weight: 600; }
.navbar-custom .nav-link {
    color: rgba(255, 255, 255, .72);
    font-weight: 500;
    font-size: .95rem;
    padding: 8px 16px;
    border-radius: 50px;
    transition: all .25s ease;
    margin: 0 2px;
}
.navbar-custom .nav-link:hover { color: #fff; background: rgba(255, 255, 255, .08); }
.navbar-custom .nav-link.active { color: #fff; background: rgba(45, 212, 191, .2); }
.navbar-custom .btn-accent {
    background: linear-gradient(135deg, #14b8a6, #0d9488);
    border: none;
    color: #fff;
    font-weight: 600;
    font-size: .9rem;
    padding: 10px 24px;
    border-radius: 60px;
    box-shadow: 0 4px 14px rgba(14, 165, 164, .35);
    transition: all .3s ease;
}
.navbar-custom .btn-accent:hover { background: linear-gradient(135deg, #0d9488, #0f766e); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(14, 165, 164, .45); }
.navbar-toggler { border: none; outline: none; }
.navbar-toggler:focus { box-shadow: none; }
.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(255,255,255,.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e"); }
@media (max-width: 991.98px) {
    .navbar-custom { top: 8px; width: calc(100% - 20px); border-radius: 28px; }
    .navbar-custom .navbar-collapse { padding: 12px 8px; }
    .navbar-custom .nav-link { padding: 10px 14px; }
}

/* ===== Hero 横幅 ===== */
.cat-hero {
    position: relative;
    background: linear-gradient(rgba(7, 18, 30, .78), rgba(7, 18, 30, .82)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    padding: 110px 0 90px;
    margin-top: -80px;
    text-align: center;
    border-radius: 0 0 36px 36px;
    overflow: hidden;
}
.cat-hero .container { position: relative; z-index: 2; }
.cat-hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: 1px;
    margin-bottom: 16px;
}
.cat-hero h1 span { color: #2dd4bf; }
.cat-hero p.lead {
    color: rgba(255, 255, 255, .82);
    font-size: 1.1rem;
    max-width: 680px;
    margin: 0 auto 28px;
    line-height: 1.8;
}
.hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.hero-tags .tag {
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .18);
    color: #fff;
    font-size: .85rem;
    padding: 6px 18px;
    border-radius: 40px;
    backdrop-filter: blur(4px);
}
@media (max-width: 768px) {
    .cat-hero { padding: 90px 0 60px; }
    .cat-hero h1 { font-size: 2rem; }
    .cat-hero p.lead { font-size: 1rem; }
}

/* ===== 板块通用 ===== */
.section { padding: 72px 0; }
.section-sm { padding: 48px 0; }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title .eyebrow {
    display: inline-block;
    background: var(--accent-soft);
    color: var(--accent-hover);
    font-size: .8rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 30px;
    margin-bottom: 12px;
    letter-spacing: .5px;
}
.section-title h2 { font-size: 2rem; font-weight: 800; color: var(--primary); margin-bottom: 10px; }
.section-title p { color: var(--text-muted); font-size: 1rem; max-width: 560px; margin: 0 auto; }
@media (max-width: 768px) {
    .section { padding: 50px 0; }
    .section-title h2 { font-size: 1.6rem; }
}

/* ===== 分类标签 ===== */
.topic-bar { margin-top: -32px; position: relative; z-index: 5; }
.topic-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    background: #fff;
    padding: 18px 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}
.topic-pills .pill {
    font-size: .88rem;
    font-weight: 500;
    padding: 8px 20px;
    border-radius: 40px;
    background: var(--bg-soft);
    color: var(--text);
    transition: all .25s ease;
    cursor: pointer;
    border: 1px solid transparent;
}
.topic-pills .pill:hover { background: var(--accent-soft); color: var(--accent-hover); border-color: rgba(14, 165, 164, .2); }
.topic-pills .pill.active { background: var(--accent); color: #fff; box-shadow: 0 4px 12px rgba(14, 165, 164, .3); }
@media (max-width: 768px) {
    .topic-pills { padding: 14px; gap: 8px; }
    .topic-pills .pill { padding: 6px 14px; font-size: .82rem; }
}

/* ===== 卡片 ===== */
.knowledge-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all .3s ease;
    height: 100%;
    box-shadow: 0 2px 8px rgba(6, 44, 52, .03);
}
.knowledge-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(14, 165, 164, .25); }
.knowledge-card .card-img { position: relative; height: 200px; overflow: hidden; }
.knowledge-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.knowledge-card:hover .card-img img { transform: scale(1.05); }
.knowledge-card .card-img .badge-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(255, 255, 255, .92);
    color: var(--primary);
    font-size: .78rem;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .1);
}
.knowledge-card .card-body { padding: 22px; }
.knowledge-card h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
.knowledge-card h3 a { color: var(--text); }
.knowledge-card h3 a:hover { color: var(--accent-hover); }
.knowledge-card p { color: var(--text-muted); font-size: .9rem; line-height: 1.7; margin-bottom: 16px; }
.knowledge-card .meta { display: flex; align-items: center; gap: 14px; font-size: .8rem; color: #8a9a9e; }
.knowledge-card .meta i { color: var(--accent); }

/* ===== 热门列表 ===== */
.hot-list { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 28px 16px; box-shadow: 0 2px 8px rgba(6, 44, 52, .03); height: 100%; }
.hot-list h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 18px; padding-bottom: 14px; border-bottom: 2px solid var(--bg-soft); display: flex; align-items: center; gap: 8px; }
.hot-list h3 i { color: var(--warm); }
.hot-item { display: flex; gap: 14px; padding: 12px 0; border-bottom: 1px dashed var(--border); align-items: flex-start; }
.hot-item:last-child { border-bottom: none; }
.hot-item .num { width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; background: var(--bg-soft); color: var(--text-muted); font-weight: 700; font-size: .82rem; border-radius: 8px; flex-shrink: 0; }
.hot-item:nth-child(1) .num, .hot-item:nth-child(2) .num, .hot-item:nth-child(3) .num { background: var(--accent-soft); color: var(--accent-hover); }
.hot-item .info a { font-weight: 600; font-size: .92rem; color: var(--text); display: block; line-height: 1.5; transition: color .2s; }
.hot-item .info a:hover { color: var(--accent-hover); }
.hot-item .info .tagline { font-size: .8rem; color: var(--text-muted); margin-top: 2px; }

@media (max-width: 768px) {
    .hot-list { padding: 20px 18px; }
}

/* ===== 统计区块 ===== */
.stats-block {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius);
    padding: 56px 40px;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.stats-block::after {
    content: '';
    position: absolute;
    right: -40px;
    bottom: -40px;
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, rgba(45, 212, 191, .18) 0%, transparent 70%);
    pointer-events: none;
}
.stat-item { text-align: center; padding: 10px; }
.stat-item .icon { font-size: 1.6rem; color: #2dd4bf; margin-bottom: 8px; }
.stat-item .num { font-size: 2.2rem; font-weight: 800; line-height: 1.2; }
.stat-item .label { font-size: .88rem; color: rgba(255, 255, 255, .65); margin-top: 4px; }
@media (max-width: 768px) {
    .stats-block { padding: 40px 20px; }
    .stat-item .num { font-size: 1.6rem; }
}

/* ===== 深度专题 ===== */
.feature-wrap {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(6, 44, 52, .06);
    transition: box-shadow .3s ease;
}
.feature-wrap:hover { box-shadow: var(--shadow-hover); }
.feature-wrap .feature-img { height: 260px; overflow: hidden; }
.feature-wrap .feature-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.feature-wrap:hover .feature-img img { transform: scale(1.04); }
.feature-body { padding: 32px; }
.feature-body .eyebrow { color: var(--accent); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.feature-body h3 { font-size: 1.5rem; font-weight: 800; margin-bottom: 12px; line-height: 1.4; }
.feature-body p { color: var(--text-muted); margin-bottom: 20px; font-size: .97rem; line-height: 1.8; }
.feature-meta { display: flex; gap: 18px; color: #8a9a9e; font-size: .82rem; padding-top: 14px; border-top: 1px solid var(--bg-soft); }
@media (max-width: 768px) {
    .feature-body { padding: 22px; }
    .feature-body h3 { font-size: 1.2rem; }
    .feature-wrap .feature-img { height: 200px; }
}

/* ===== FAQ ===== */
.faq-block { max-width: 820px; margin: 0 auto; }
.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
    overflow: hidden;
    transition: border-color .25s ease, box-shadow .25s ease;
}
.faq-item:hover { border-color: rgba(14, 165, 164, .3); box-shadow: 0 4px 16px rgba(6, 44, 52, .05); }
.faq-item .faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    font-weight: 600;
    font-size: .98rem;
    cursor: pointer;
    gap: 14px;
}
.faq-item .faq-q i { color: var(--accent); transition: transform .3s ease; flex-shrink: 0; }
.faq-item .faq-q.open i { transform: rotate(45deg); }
.faq-item .faq-a { padding: 0 24px 20px; color: var(--text-muted); font-size: .92rem; line-height: 1.8; display: none; }
.faq-item .faq-a.show { display: block; }
@media (max-width: 576px) {
    .faq-item .faq-q { padding: 16px 18px; font-size: .9rem; }
}

/* ===== CTA ===== */
.cta-section {
    position: relative;
    background: linear-gradient(135deg, #0d1b2a, #1b3a4b), url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    border-radius: var(--radius);
    padding: 64px 40px;
    text-align: center;
    color: #fff;
    margin-bottom: 72px;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(13, 27, 42, .72);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 2rem; font-weight: 800; margin-bottom: 14px; color: #fff; }
.cta-section p { color: rgba(255, 255, 255, .78); max-width: 520px; margin: 0 auto 28px; font-size: 1rem; }
.cta-section .btn-cta {
    display: inline-block;
    background: linear-gradient(135deg, #2dd4bf, #0ea5a4);
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    padding: 14px 38px;
    border-radius: 60px;
    box-shadow: 0 6px 24px rgba(45, 212, 191, .35);
    transition: all .3s ease;
}
.cta-section .btn-cta:hover { transform: translateY(-2px); color: #fff; box-shadow: 0 10px 32px rgba(45, 212, 191, .5); }
@media (max-width: 576px) {
    .cta-section { padding: 44px 20px; }
    .cta-section h2 { font-size: 1.5rem; }
}

/* ===== 页脚 ===== */
.site-footer {
    background: var(--primary);
    color: rgba(255, 255, 255, .65);
    padding: 56px 0 28px;
    margin-top: 40px;
    border-top: 3px solid rgba(45, 212, 191, .4);
}
.site-footer .footer-brand { font-size: 1.3rem; font-weight: 800; color: #fff; }
.site-footer .footer-brand span { color: #2dd4bf; }
.site-footer p { font-size: .88rem; line-height: 1.8; margin-bottom: 0; max-width: 380px; }
.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, .08);
    border-radius: 50%;
    color: #fff;
    margin-right: 8px;
    transition: all .25s ease;
}
.social-icon:hover { background: rgba(45, 212, 191, .3); color: #fff; transform: translateY(-2px); }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255, 255, 255, .6); font-size: .88rem; transition: color .2s; }
.footer-links a:hover { color: #2dd4bf; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .08);
    margin-top: 36px;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    font-size: .82rem;
    color: rgba(255, 255, 255, .4);
}
@media (max-width: 768px) {
    .site-footer .col-lg-5 p { max-width: 100%; }
    .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
}

.btn-outline-custom {
    border: 1.5px solid var(--accent);
    color: var(--accent-hover);
    background: transparent;
    font-weight: 600;
    font-size: .9rem;
    padding: 9px 22px;
    border-radius: 50px;
    transition: all .25s ease;
}
.btn-outline-custom:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

.row-gap { row-gap: 24px; }

@media (max-width: 520px) {
    .knowledge-card .card-img { height: 170px; }
    .stats-block .stat-item { padding: 8px; }
    .stat-item .num { font-size: 1.3rem; }
    .stat-item .icon { font-size: 1.2rem; }
}

/* roulang page: category3 */
:root {
      --primary: #0d1b2a;
      --primary-light: #1b3a5c;
      --primary-lighter: #e8eef5;
      --accent: #ff6b35;
      --accent-hover: #e85a22;
      --accent-soft: #fff1eb;
      --teal: #00c9a7;
      --teal-soft: #e0f9f4;
      --bg: #f5f7fb;
      --white: #ffffff;
      --text: #1a2233;
      --text-muted: #6b7686;
      --border: #e3e8ef;
      --radius: 16px;
      --radius-sm: 10px;
      --radius-lg: 24px;
      --shadow: 0 8px 30px rgba(13, 27, 42, 0.08);
      --shadow-lg: 0 16px 44px rgba(13, 27, 42, 0.12);
      --transition: all 0.35s cubic-bezier(0.25, 0.7, 0.3, 1);
      --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    }

    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: var(--font);
      color: var(--text);
      background: var(--bg);
      line-height: 1.7;
      font-size: 16px;
    }
    img { max-width: 100%; height: auto; }
    a { text-decoration: none; color: inherit; transition: var(--transition); }
    a:hover { color: var(--accent); }
    ul, ol { list-style: none; padding: 0; margin: 0; }
    button, input, select, textarea { font-family: inherit; }
    :focus-visible {
      outline: 3px solid var(--accent);
      outline-offset: 2px;
      border-radius: 4px;
    }
    ::selection { background: var(--accent); color: #fff; }

    .container { max-width: 1200px; }

    /* ===== Header 悬浮胶囊导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1050;
      padding: 14px 0 0;
      background: transparent;
    }
    .navbar-custom {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid rgba(255, 255, 255, 0.75);
      box-shadow: 0 6px 28px rgba(13, 27, 42, 0.09);
      border-radius: 80px;
      padding: 10px 18px 10px 26px;
      transition: var(--transition);
    }
    .navbar-custom:hover,
    .navbar-custom.scrolled {
      box-shadow: 0 8px 32px rgba(13, 27, 42, 0.12);
    }
    .navbar-brand {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: 0.02em;
      line-height: 1.2;
    }
    .navbar-brand span {
      color: var(--accent);
      font-weight: 600;
    }
    .navbar-custom .nav-link {
      color: var(--text);
      font-weight: 500;
      font-size: 0.95rem;
      padding: 8px 18px !important;
      border-radius: 40px;
      position: relative;
      transition: var(--transition);
    }
    .navbar-custom .nav-link:hover {
      color: var(--accent);
      background: var(--accent-soft);
    }
    .navbar-custom .nav-link.active {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 4px 14px rgba(13, 27, 42, 0.22);
    }
    .btn-accent {
      background: linear-gradient(135deg, var(--accent), #ff8f5a);
      color: #fff;
      border: none;
      font-weight: 600;
      padding: 10px 24px;
      transition: var(--transition);
      box-shadow: 0 6px 18px rgba(255, 107, 53, 0.35);
    }
    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 26px rgba(255, 107, 53, 0.45);
      color: #fff;
    }
    .btn-outline-light {
      border: 2px solid rgba(255, 255, 255, 0.7);
      color: #fff;
      border-radius: 60px;
      padding: 10px 26px;
      font-weight: 600;
      transition: var(--transition);
      background: transparent;
    }
    .btn-outline-light:hover {
      background: #fff;
      color: var(--primary);
      border-color: #fff;
    }
    .navbar-toggler {
      border: 2px solid var(--border);
      border-radius: 10px;
      padding: 6px 10px;
      background: transparent;
    }
    .navbar-toggler:focus {
      box-shadow: none;
      border-color: var(--accent);
    }

    /* ===== 分类页 Hero ===== */
    .category-hero {
      position: relative;
      min-height: 430px;
      display: flex;
      align-items: center;
      margin-top: -76px;
      padding: 160px 0 80px;
      background-image: url('/assets/images/backpic/back-2.png');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      overflow: hidden;
    }
    .category-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(100deg, rgba(13, 27, 42, 0.92) 0%, rgba(13, 27, 42, 0.72) 48%, rgba(13, 27, 42, 0.35) 100%);
    }
    .category-hero .container {
      position: relative;
      z-index: 2;
    }
    .category-hero .breadcrumb {
      background: rgba(255, 255, 255, 0.12);
      border-radius: 60px;
      padding: 6px 18px;
      display: inline-flex;
      backdrop-filter: blur(6px);
      margin-bottom: 22px;
    }
    .category-hero .breadcrumb a,
    .category-hero .breadcrumb-item {
      color: rgba(255, 255, 255, 0.8);
      font-size: 0.9rem;
      font-weight: 500;
    }
    .category-hero .breadcrumb-item.active {
      color: var(--accent);
    }
    .category-hero .breadcrumb-item + .breadcrumb-item::before {
      color: rgba(255, 255, 255, 0.5);
    }
    .category-hero h1 {
      font-size: 2.9rem;
      font-weight: 800;
      color: #fff;
      line-height: 1.25;
      margin-bottom: 18px;
      letter-spacing: 0.01em;
    }
    .category-hero h1 span {
      color: var(--accent);
    }
    .category-hero .hero-desc {
      color: rgba(255, 255, 255, 0.85);
      font-size: 1.1rem;
      max-width: 680px;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .hero-badges .badge-custom {
      background: rgba(255, 255, 255, 0.14);
      border: 1px solid rgba(255, 255, 255, 0.22);
      color: #fff;
      border-radius: 40px;
      padding: 6px 16px;
      font-size: 0.85rem;
      font-weight: 500;
      backdrop-filter: blur(4px);
    }

    /* ===== 通用板块 ===== */
    .section-block {
      padding: 80px 0;
    }
    .section-block .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--accent);
      font-weight: 700;
      font-size: 0.85rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      margin-bottom: 10px;
      background: var(--accent-soft);
      border-radius: 40px;
      padding: 5px 16px;
    }
    .section-block .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.3;
      margin-bottom: 14px;
    }
    .section-block .section-sub {
      color: var(--text-muted);
      font-size: 1rem;
      max-width: 640px;
      margin-bottom: 0;
    }
    .section-header-wrap {
      margin-bottom: 42px;
    }

    /* ===== 观察视角 卡片 ===== */
    .perspective-card {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 34px 28px;
      height: 100%;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .perspective-card::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--accent), var(--teal));
      opacity: 0;
      transition: var(--transition);
    }
    .perspective-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(255, 107, 53, 0.3);
    }
    .perspective-card:hover::after {
      opacity: 1;
    }
    .perspective-icon {
      width: 58px;
      height: 58px;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
      background: var(--accent-soft);
      color: var(--accent);
    }
    .perspective-card:nth-child(2) .perspective-icon {
      background: var(--teal-soft);
      color: var(--teal);
    }
    .perspective-card:nth-child(3) .perspective-icon {
      background: var(--primary-lighter);
      color: var(--primary-light);
    }
    .perspective-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .perspective-card p {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
      margin-bottom: 0;
    }

    /* ===== 文章卡片 ===== */
    .article-card {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      height: 100%;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .article-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .article-thumb {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16 / 10;
    }
    .article-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s ease;
    }
    .article-card:hover .article-thumb img {
      transform: scale(1.06);
    }
    .article-thumb .tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(13, 27, 42, 0.75);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 30px;
      backdrop-filter: blur(4px);
    }
    .article-body {
      padding: 24px 22px 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .article-body h3 {
      font-size: 1.1rem;
      font-weight: 700;
      line-height: 1.5;
      color: var(--primary);
      margin-bottom: 10px;
      transition: var(--transition);
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .article-body h3 a:hover {
      color: var(--accent);
    }
    .article-body p {
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.7;
      margin-bottom: 14px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .article-meta {
      margin-top: auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-top: 14px;
      border-top: 1px solid var(--border);
      color: var(--text-muted);
      font-size: 0.82rem;
    }
    .article-meta .more-link {
      color: var(--accent);
      font-weight: 600;
      font-size: 0.85rem;
    }
    .article-meta .more-link i {
      transition: transform 0.3s ease;
      font-size: 0.8rem;
    }
    .article-meta .more-link:hover i {
      transform: translateX(4px);
    }

    /* ===== 数据看板 ===== */
    .stats-band {
      background: linear-gradient(135deg, #0d1b2a 0%, #1b3a5c 100%);
      border-radius: var(--radius-lg);
      padding: 60px 40px;
      position: relative;
      overflow: hidden;
    }
    .stats-band::before {
      content: '';
      position: absolute;
      top: -60px;
      right: -40px;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: rgba(255, 107, 53, 0.12);
    }
    .stats-band::after {
      content: '';
      position: absolute;
      bottom: -80px;
      left: 10%;
      width: 180px;
      height: 180px;
      border-radius: 50%;
      background: rgba(0, 201, 167, 0.1);
    }
    .stats-band .stat-item {
      text-align: center;
      position: relative;
      z-index: 1;
    }
    .stat-num {
      font-size: 2.8rem;
      font-weight: 800;
      color: #fff;
      line-height: 1.2;
      font-family: 'Arial', sans-serif;
      letter-spacing: -0.02em;
    }
    .stat-num span {
      color: var(--accent);
    }
    .stat-label {
      color: rgba(255, 255, 255, 0.65);
      font-size: 0.95rem;
      margin-top: 6px;
      font-weight: 500;
    }

    /* ===== 深度专题 ===== */
    .feature-panel {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow);
    }
    .feature-panel img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .feature-panel .feature-content {
      padding: 44px 40px;
    }
    .feature-panel .feature-tag {
      display: inline-block;
      background: var(--teal-soft);
      color: #008f77;
      font-size: 0.78rem;
      font-weight: 700;
      padding: 5px 14px;
      border-radius: 30px;
      margin-bottom: 16px;
    }
    .feature-panel h2 {
      font-size: 1.65rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.4;
      margin-bottom: 16px;
    }
    .feature-panel .feature-text {
      color: var(--text-muted);
      font-size: 0.98rem;
      line-height: 1.8;
      margin-bottom: 22px;
    }
    .feature-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px 18px;
      margin-bottom: 24px;
    }
    .feature-list li {
      color: var(--text);
      font-size: 0.9rem;
      font-weight: 500;
      position: relative;
      padding-left: 22px;
    }
    .feature-list li::before {
      content: '\f00c';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      color: var(--teal);
      position: absolute;
      left: 0;
      top: 1px;
      font-size: 0.8rem;
    }

    /* ===== 读者反馈 ===== */
    .feedback-card {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 30px 28px;
      height: 100%;
      transition: var(--transition);
      position: relative;
    }
    .feedback-card::before {
      content: '\201C';
      font-family: Georgia, serif;
      font-size: 4rem;
      color: var(--accent);
      opacity: 0.15;
      position: absolute;
      top: 10px;
      right: 22px;
      line-height: 1;
    }
    .feedback-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .feedback-card .stars {
      color: #ffb800;
      font-size: 0.85rem;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }
    .feedback-card blockquote {
      margin-bottom: 18px;
      color: var(--text);
      font-size: 0.95rem;
      line-height: 1.8;
    }
    .feedback-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .feedback-user .avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
    }
    .feedback-user .name {
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--primary);
    }
    .feedback-user .role {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* ===== FAQ ===== */
    .faq-accordion .accordion-item {
      border: 1px solid var(--border);
      border-radius: var(--radius) !important;
      overflow: hidden;
      margin-bottom: 14px;
      background: var(--white);
      box-shadow: 0 3px 14px rgba(13, 27, 42, 0.04);
      transition: var(--transition);
    }
    .faq-accordion .accordion-item:hover {
      box-shadow: var(--shadow);
    }
    .faq-accordion .accordion-button {
      font-weight: 700;
      color: var(--primary);
      font-size: 1rem;
      padding: 20px 24px;
      background: transparent;
      border: none;
    }
    .faq-accordion .accordion-button:not(.collapsed) {
      background: var(--accent-soft);
      color: var(--accent-hover);
      box-shadow: none;
    }
    .faq-accordion .accordion-button:focus {
      box-shadow: none;
      border-color: transparent;
    }
    .faq-accordion .accordion-button::after {
      background-size: 1rem;
    }
    .faq-accordion .accordion-body {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.8;
      padding: 0 24px 22px;
    }

    /* ===== CTA ===== */
    .cta-panel {
      background: linear-gradient(120deg, var(--primary) 0%, #1b3a5c 65%, #2a4a72 100%);
      border-radius: var(--radius-lg);
      padding: 56px 50px;
      position: relative;
      overflow: hidden;
    }
    .cta-panel::before {
      content: '';
      position: absolute;
      top: -40px;
      right: -40px;
      width: 160px;
      height: 160px;
      border-radius: 50%;
      background: rgba(255, 107, 53, 0.25);
    }
    .cta-panel h2 {
      color: #fff;
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .cta-panel p {
      color: rgba(255, 255, 255, 0.75);
      font-size: 1rem;
      max-width: 520px;
      margin-bottom: 0;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: #0a1520;
      color: rgba(255, 255, 255, 0.75);
      padding: 64px 0 30px;
      margin-top: 80px;
      font-size: 0.92rem;
    }
    .site-footer .footer-brand {
      font-size: 1.6rem;
      font-weight: 800;
      color: #fff;
    }
    .site-footer .footer-brand span {
      color: var(--accent);
    }
    .site-footer p {
      color: rgba(255, 255, 255, 0.55);
      line-height: 1.8;
      max-width: 400px;
    }
    .social-icon {
      width: 38px;
      height: 38px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.08);
      color: rgba(255, 255, 255, 0.75);
      margin-right: 8px;
      transition: var(--transition);
    }
    .social-icon:hover {
      background: var(--accent);
      color: #fff;
      transform: translateY(-3px);
    }
    .site-footer h6 {
      color: #fff;
      font-size: 1rem;
      letter-spacing: 0.03em;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .footer-links a {
      color: rgba(255, 255, 255, 0.6);
      font-size: 0.9rem;
      transition: var(--transition);
      position: relative;
      padding-left: 0;
    }
    .footer-links a:hover {
      color: var(--accent);
      padding-left: 6px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      margin-top: 44px;
      padding-top: 22px;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 8px;
      color: rgba(255, 255, 255, 0.4);
      font-size: 0.85rem;
    }

    /* ===== 响应式断点 ===== */
    @media (max-width: 991.98px) {
      .navbar-custom {
        border-radius: 20px;
        padding: 12px 16px;
      }
      .navbar-custom .navbar-collapse {
        padding: 16px 6px 10px;
        border-top: 1px solid var(--border);
        margin-top: 8px;
      }
      .navbar-custom .nav-link {
        padding: 10px 16px !important;
      }
      .navbar-custom .btn-accent {
        display: inline-block;
        margin-top: 10px;
      }
      .category-hero {
        margin-top: -70px;
        min-height: 380px;
        padding: 140px 0 60px;
      }
      .category-hero h1 {
        font-size: 2.4rem;
      }
      .section-block {
        padding: 60px 0;
      }
      .section-block .section-title {
        font-size: 1.8rem;
      }
      .feature-panel .feature-content {
        padding: 32px 28px;
      }
      .stats-band {
        padding: 44px 24px;
      }
      .stat-num {
        font-size: 2.2rem;
      }
    }

    @media (max-width: 767.98px) {
      .category-hero h1 {
        font-size: 2rem;
      }
      .category-hero .hero-desc {
        font-size: 1rem;
      }
      .section-block {
        padding: 48px 0;
      }
      .section-block .section-title {
        font-size: 1.6rem;
      }
      .feature-list {
        grid-template-columns: 1fr;
      }
      .cta-panel {
        padding: 36px 26px;
      }
      .cta-panel h2 {
        font-size: 1.5rem;
      }
      .site-footer {
        padding: 48px 0 24px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

    @media (max-width: 575.98px) {
      body { font-size: 15px; }
      .navbar-brand {
        font-size: 1.15rem;
      }
      .category-hero {
        min-height: 340px;
        padding: 120px 0 50px;
        margin-top: -64px;
      }
      .category-hero h1 {
        font-size: 1.7rem;
      }
      .category-hero .hero-desc {
        font-size: 0.93rem;
      }
      .section-block {
        padding: 42px 0;
      }
      .section-block .section-title {
        font-size: 1.35rem;
      }
      .perspective-card {
        padding: 26px 20px;
      }
      .stats-band {
        padding: 36px 18px;
        border-radius: 18px;
      }
      .stat-num {
        font-size: 1.8rem;
      }
      .article-body {
        padding: 20px 16px 16px;
      }
      .feature-panel .feature-content {
        padding: 26px 20px;
      }
      .faq-accordion .accordion-button {
        font-size: 0.9rem;
        padding: 16px 18px;
      }
      .faq-accordion .accordion-body {
        padding: 0 18px 18px;
        font-size: 0.88rem;
      }
      .cta-panel {
        border-radius: 18px;
      }
      .cta-panel h2 {
        font-size: 1.3rem;
      }
    }