/* roulang page: index */
:root {
  --primary: #0f1b2d;
  --primary-light: #1a2d4a;
  --primary-lighter: #243b5e;
  --accent: #d4a84b;
  --accent-hover: #c49a3d;
  --accent-light: #f0e0b8;
  --bg-main: #f5f3ef;
  --bg-white: #ffffff;
  --bg-dark: #0a1628;
  --text-dark: #111827;
  --text-body: #374151;
  --text-light: #6b7280;
  --text-white: #f9fafb;
  --border: #e5e7eb;
  --border-light: #f0f0f0;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --max-width: 1200px;
  --header-top-height: 40px;
  --nav-height: 72px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);font-size:16px;line-height:1.7;color:var(--text-body);background:var(--bg-main);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:var(--transition)}
img{max-width:100%;height:auto;display:block}
button,input,textarea{font-family:inherit;font-size:inherit;border:none;outline:none;transition:var(--transition)}
ul,ol{list-style:none}
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px;width:100%}
@media(max-width:768px){.container{padding:0 16px}}

/* ===== header top bar ===== */
.header-top{background:var(--primary);color:var(--text-white);font-size:13px;height:var(--header-top-height);display:flex;align-items:center;border-bottom:1px solid rgba(255,255,255,0.06)}
.header-top .container{display:flex;justify-content:space-between;align-items:center}
.header-top a{color:var(--accent);font-weight:500}
.header-top a:hover{color:var(--accent-hover)}
.header-top .ht-left{display:flex;align-items:center;gap:8px}
.header-top .ht-left i{color:var(--accent);font-size:12px}
.header-top .ht-right{display:flex;align-items:center;gap:16px}
.header-top .ht-right span{opacity:0.8}
@media(max-width:640px){.header-top .ht-right span{display:none}}

/* ===== main nav ===== */
.main-header{background:var(--bg-white);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}
.main-header .container{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height)}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--primary);letter-spacing:-0.5px}
.logo i{color:var(--accent);font-size:28px}
.logo span{background:linear-gradient(135deg,var(--primary),var(--primary-lighter));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{display:flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius-xs);font-weight:500;font-size:15px;color:var(--text-body);position:relative}
.nav-links a:hover{background:var(--bg-main);color:var(--primary)}
.nav-links a.active{background:var(--primary);color:var(--text-white)}
.nav-links a i{font-size:14px}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .search-btn{width:40px;height:40px;border-radius:50%;background:var(--bg-main);display:flex;align-items:center;justify-content:center;color:var(--text-body);font-size:16px;cursor:pointer}
.nav-cta .search-btn:hover{background:var(--primary);color:var(--text-white)}
.nav-cta .btn-download{background:var(--accent);color:var(--primary);padding:10px 24px;border-radius:var(--radius-xs);font-weight:700;font-size:14px;display:flex;align-items:center;gap:8px}
.nav-cta .btn-download:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px rgba(212,168,75,0.35)}
.mobile-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;font-size:22px;color:var(--primary);cursor:pointer;background:none;border-radius:var(--radius-xs)}
.mobile-toggle:hover{background:var(--bg-main)}
@media(max-width:768px){
  .nav-links,.nav-cta .search-btn,.nav-cta .btn-download{display:none}
  .mobile-toggle{display:flex}
  .main-header .container{justify-content:space-between}
  .nav-links.mobile-open{display:flex;flex-direction:column;position:absolute;top:var(--nav-height);left:0;right:0;background:var(--bg-white);padding:16px;border-bottom:1px solid var(--border);box-shadow:var(--shadow);gap:2px;z-index:99}
  .nav-links.mobile-open a{padding:14px 16px;border-radius:var(--radius-xs)}
  .nav-cta.mobile-open{display:flex;flex-direction:column;position:absolute;top:calc(var(--nav-height) + 280px);left:0;right:0;background:var(--bg-white);padding:0 16px 16px;border-bottom:1px solid var(--border);gap:10px}
  .nav-cta.mobile-open .btn-download{display:flex;width:100%;justify-content:center}
  .nav-cta.mobile-open .search-btn{display:flex;width:100%;border-radius:var(--radius-xs);height:44px}
}

/* ===== hero ===== */
.hero{position:relative;min-height:580px;display:flex;align-items:center;background:var(--bg-dark);overflow:hidden}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center center/cover no-repeat;opacity:0.35;transform:scale(1.05)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,27,45,0.92) 0%,rgba(15,27,45,0.7) 50%,rgba(15,27,45,0.4) 100%)}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding-top:40px;padding-bottom:40px}
.hero-text h1{font-size:44px;font-weight:900;color:var(--text-white);line-height:1.15;margin-bottom:20px;letter-spacing:-1px}
.hero-text h1 span{color:var(--accent)}
.hero-text p{font-size:18px;color:rgba(255,255,255,0.8);line-height:1.8;margin-bottom:32px;max-width:520px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-actions .btn-primary{background:var(--accent);color:var(--primary);padding:16px 36px;border-radius:var(--radius-sm);font-weight:700;font-size:16px;display:flex;align-items:center;gap:10px;box-shadow:0 4px 20px rgba(212,168,75,0.3)}
.hero-actions .btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 30px rgba(212,168,75,0.4)}
.hero-actions .btn-outline{background:transparent;border:2px solid rgba(255,255,255,0.3);color:var(--text-white);padding:14px 32px;border-radius:var(--radius-sm);font-weight:600;font-size:16px;display:flex;align-items:center;gap:10px}
.hero-actions .btn-outline:hover{background:rgba(255,255,255,0.1);border-color:var(--accent);color:var(--accent)}
.hero-visual{display:flex;justify-content:center;align-items:center}
.hero-card-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;width:100%;max-width:480px}
.hero-card{background:rgba(255,255,255,0.08);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,0.12);border-radius:var(--radius);padding:24px 20px;text-align:center;transition:var(--transition)}
.hero-card:hover{background:rgba(255,255,255,0.14);transform:translateY(-4px)}
.hero-card i{font-size:36px;color:var(--accent);margin-bottom:12px}
.hero-card h4{color:var(--text-white);font-size:16px;font-weight:700;margin-bottom:4px}
.hero-card p{color:rgba(255,255,255,0.6);font-size:13px}
@media(max-width:1024px){
  .hero .container{grid-template-columns:1fr;gap:32px;text-align:center}
  .hero-text p{max-width:100%}
  .hero-actions{justify-content:center}
  .hero-card-grid{max-width:400px;margin:0 auto}
}
@media(max-width:640px){
  .hero{min-height:480px}
  .hero-text h1{font-size:30px}
  .hero-text p{font-size:16px}
  .hero-card-grid{grid-template-columns:1fr 1fr;gap:12px}
  .hero-card{padding:18px 14px}
  .hero-card i{font-size:28px}
}

/* ===== section common ===== */
section{padding:80px 0}
.section-title{text-align:center;margin-bottom:56px}
.section-title h2{font-size:34px;font-weight:800;color:var(--text-dark);margin-bottom:12px;letter-spacing:-0.5px}
.section-title h2 i{color:var(--accent);margin-right:8px}
.section-title p{font-size:17px;color:var(--text-light);max-width:640px;margin:0 auto}
@media(max-width:640px){
  section{padding:48px 0}
  .section-title h2{font-size:26px}
  .section-title{margin-bottom:36px}
}

/* ===== features ===== */
.features{background:var(--bg-white)}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:var(--bg-main);border-radius:var(--radius);padding:36px 28px;text-align:center;transition:var(--transition);border:1px solid var(--border-light)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--accent-light)}
.feature-card .icon-wrap{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-lighter));display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:28px;color:var(--accent)}
.feature-card h3{font-size:20px;font-weight:700;color:var(--text-dark);margin-bottom:10px}
.feature-card p{font-size:15px;color:var(--text-light);line-height:1.7}
@media(max-width:992px){.features-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.features-grid{grid-template-columns:1fr};.feature-card{padding:28px 20px}}

/* ===== categories ===== */
.categories{background:var(--bg-main)}
.categories-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cat-card{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--bg-white);box-shadow:var(--shadow-sm);transition:var(--transition);cursor:pointer}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.cat-card img{width:100%;height:200px;object-fit:cover;transition:var(--transition)}
.cat-card:hover img{transform:scale(1.05)}
.cat-card .cat-info{padding:20px;display:flex;justify-content:space-between;align-items:center}
.cat-card .cat-info h3{font-size:18px;font-weight:700;color:var(--text-dark)}
.cat-card .cat-info span{color:var(--text-light);font-size:14px;display:flex;align-items:center;gap:6px}
.cat-card .cat-info span i{color:var(--accent)}
@media(max-width:992px){.categories-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.categories-grid{grid-template-columns:1fr}}

/* ===== latest posts ===== */
.latest-posts{background:var(--bg-white)}
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.post-card{background:var(--bg-white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:var(--transition);display:flex;flex-direction:column}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.post-card .post-img{width:100%;height:200px;object-fit:cover}
.post-card .post-body{padding:24px;flex:1;display:flex;flex-direction:column}
.post-card .post-meta{display:flex;gap:12px;font-size:13px;color:var(--text-light);margin-bottom:10px;flex-wrap:wrap}
.post-card .post-meta .cat-tag{background:var(--accent-light);color:var(--primary);padding:2px 12px;border-radius:20px;font-weight:600;font-size:12px}
.post-card .post-meta .date{display:flex;align-items:center;gap:4px}
.post-card h3{font-size:18px;font-weight:700;color:var(--text-dark);margin-bottom:10px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card p{font-size:15px;color:var(--text-light);line-height:1.7;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.post-card .read-more{color:var(--accent);font-weight:600;font-size:14px;display:flex;align-items:center;gap:6px;margin-top:auto}
.post-card .read-more:hover{color:var(--accent-hover);gap:10px}
.empty-msg{grid-column:1/-1;text-align:center;padding:60px 20px;color:var(--text-light);font-size:17px;background:var(--bg-main);border-radius:var(--radius)}
.empty-msg i{font-size:40px;display:block;margin-bottom:16px;color:var(--accent)}
@media(max-width:992px){.posts-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.posts-grid{grid-template-columns:1fr}}

/* ===== stats ===== */
.stats{background:var(--bg-dark);position:relative;overflow:hidden}
.stats::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center center/cover no-repeat;opacity:0.08}
.stats .container{position:relative;z-index:1}
.stats .section-title h2{color:var(--text-white)}
.stats .section-title p{color:rgba(255,255,255,0.7)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:center;padding:32px 16px;background:rgba(255,255,255,0.04);border-radius:var(--radius);border:1px solid rgba(255,255,255,0.06);transition:var(--transition)}
.stat-item:hover{background:rgba(255,255,255,0.08);transform:translateY(-4px)}
.stat-item .num{font-size:42px;font-weight:900;color:var(--accent);line-height:1;margin-bottom:8px}
.stat-item .label{font-size:15px;color:rgba(255,255,255,0.7)}
@media(max-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.stat-item .num{font-size:32px}}

/* ===== process ===== */
.process{background:var(--bg-main)}
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.process-steps::before{content:'';position:absolute;top:40px;left:12%;right:12%;height:2px;background:var(--border);z-index:0}
.process-step{text-align:center;position:relative;z-index:1;background:var(--bg-main);padding:0 8px}
.process-step .step-num{width:80px;height:80px;border-radius:50%;background:var(--primary);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:30px;font-weight:900;margin:0 auto 20px;border:4px solid var(--bg-white);box-shadow:var(--shadow)}
.process-step h3{font-size:18px;font-weight:700;color:var(--text-dark);margin-bottom:8px}
.process-step p{font-size:14px;color:var(--text-light);line-height:1.7}
@media(max-width:992px){.process-steps{grid-template-columns:repeat(2,1fr);gap:32px}.process-steps::before{display:none}}
@media(max-width:560px){.process-steps{grid-template-columns:1fr}}

/* ===== faq ===== */
.faq{background:var(--bg-white)}
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:8px}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:var(--accent-light)}
.faq-question{width:100%;background:var(--bg-white);padding:20px 24px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-size:17px;font-weight:600;color:var(--text-dark);text-align:left}
.faq-question i{transition:var(--transition);color:var(--accent);font-size:18px}
.faq-item.active .faq-question i{transform:rotate(180deg)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:var(--transition);color:var(--text-light);line-height:1.8;font-size:15px}
.faq-item.active .faq-answer{max-height:300px;padding:0 24px 20px}
@media(max-width:640px){.faq-question{padding:16px 18px;font-size:15px}}

/* ===== cta ===== */
.cta{background:var(--bg-dark);position:relative;overflow:hidden}
.cta::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center center/cover no-repeat;opacity:0.1}
.cta .container{position:relative;z-index:1;text-align:center;padding:60px 20px}
.cta h2{font-size:36px;font-weight:800;color:var(--text-white);margin-bottom:16px}
.cta p{font-size:18px;color:rgba(255,255,255,0.75);max-width:600px;margin:0 auto 32px}
.cta .btn-group{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta .btn-primary{background:var(--accent);color:var(--primary);padding:16px 40px;border-radius:var(--radius-sm);font-weight:700;font-size:17px;display:flex;align-items:center;gap:10px;box-shadow:0 4px 20px rgba(212,168,75,0.3)}
.cta .btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px)}
.cta .btn-outline{background:transparent;border:2px solid rgba(255,255,255,0.25);color:var(--text-white);padding:14px 36px;border-radius:var(--radius-sm);font-weight:600;font-size:16px}
.cta .btn-outline:hover{background:rgba(255,255,255,0.08);border-color:var(--accent);color:var(--accent)}
@media(max-width:640px){.cta h2{font-size:28px}}

/* ===== footer ===== */
.footer{background:var(--primary);color:rgba(255,255,255,0.7);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,0.08)}
.footer-brand .logo{color:var(--text-white);margin-bottom:16px}
.footer-brand .logo span{-webkit-text-fill-color:var(--text-white);background:none}
.footer-brand p{font-size:15px;line-height:1.8;max-width:320px}
.footer-brand .social{display:flex;gap:12px;margin-top:20px}
.footer-brand .social a{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.06);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.6);font-size:16px}
.footer-brand .social a:hover{background:var(--accent);color:var(--primary)}
.footer-col h4{font-size:16px;font-weight:700;color:var(--text-white);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,0.6);display:flex;align-items:center;gap:6px}
.footer-col ul a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{padding:24px 0;text-align:center;font-size:14px;color:rgba(255,255,255,0.4)}
.footer-bottom a{color:var(--accent)}
@media(max-width:992px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.footer-grid{grid-template-columns:1fr;gap:32px}.footer-brand p{max-width:100%}}

/* ===== back to top ===== */
.back-top{position:fixed;bottom:30px;right:30px;width:48px;height:48px;border-radius:50%;background:var(--primary);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:var(--shadow);z-index:99;cursor:pointer;opacity:0;visibility:hidden;transition:var(--transition)}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--accent);color:var(--primary);transform:translateY(-3px)}

/* roulang page: article */
/* ===== CSS Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7f;
            --accent: #f4a261;
            --accent-dark: #e76f51;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-section: #f0f2f5;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #6c757d;
            --text-light: #f8f9fa;
            --border-color: #e2e5ea;
            --border-light: #f0f1f3;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; letter-spacing: -0.02em; }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 2.0rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; }
        p:last-child { margin-bottom: 0; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            box-shadow: 0 2px 20px rgba(0,0,0,0.06);
            border-bottom: 1px solid var(--border-light);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
        }
        .logo i { font-size: 1.8rem; color: var(--primary); }
        .logo span { color: var(--secondary); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a i { font-size: 0.9rem; }
        .nav-links a:hover,
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 15px rgba(230, 57, 70, 0.35);
            transform: translateY(-1px);
        }
        .nav-links a.active { background: var(--primary); color: #fff; }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px 12px;
            background: transparent;
            border: 2px solid var(--border-color);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover { border-color: var(--primary); }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Article Detail ===== */
        .article-banner {
            position: relative;
            background: var(--bg-dark);
            padding: 80px 0 60px;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,46,0.85) 0%, rgba(15,26,46,0.60) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-banner .breadcrumb a:hover { color: var(--accent); }
        .article-banner .breadcrumb .sep { color: rgba(255,255,255,0.4); }
        .article-banner .breadcrumb .current { color: #fff; font-weight: 500; }
        .article-banner h1 {
            font-size: 2.6rem;
            color: #fff;
            max-width: 900px;
            line-height: 1.25;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .article-meta-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            margin-top: 24px;
            color: rgba(255,255,255,0.8);
            font-size: 0.95rem;
        }
        .article-meta-bar .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
        }
        .article-meta-bar .date i,
        .article-meta-bar .views i { margin-right: 6px; }

        /* ===== Article Content ===== */
        .article-main {
            padding: 60px 0 80px;
            background: var(--bg-body);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 48px 52px;
            border: 1px solid var(--border-light);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
        }
        .article-body .content p { margin-bottom: 1.4rem; }
        .article-body .content h2,
        .article-body .content h3,
        .article-body .content h4 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--secondary);
        }
        .article-body .content h2 { font-size: 1.7rem; }
        .article-body .content h3 { font-size: 1.35rem; }
        .article-body .content img {
            margin: 24px 0;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            width: 100%;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin: 1rem 0 1.4rem 1.8rem;
        }
        .article-body .content ul li { list-style: disc; margin-bottom: 0.4rem; }
        .article-body .content ol li { list-style: decimal; margin-bottom: 0.4rem; }
        .article-body .content blockquote {
            margin: 1.6rem 0;
            padding: 16px 24px;
            border-left: 4px solid var(--primary);
            background: var(--bg-body);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body .content a { color: var(--primary); border-bottom: 1px solid transparent; }
        .article-body .content a:hover { border-bottom-color: var(--primary); }
        .article-body .content .align-center { text-align: center; }
        .article-body .content .highlight {
            background: #fff3cd;
            padding: 2px 8px;
            border-radius: 4px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-tags .label {
            font-weight: 600;
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding-right: 8px;
        }
        .article-tags .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: 40px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .article-tags .tag-item:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            background: var(--bg-body);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition);
            flex: 1;
            max-width: 48%;
        }
        .article-nav a:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .article-nav .next { justify-content: flex-end; text-align: right; }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            color: var(--secondary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i { color: var(--primary); }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-secondary);
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .sidebar-list a:hover { color: var(--primary); }
        .sidebar-list a .num {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-body);
            border-radius: 8px;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-muted);
        }
        .sidebar-list a:hover .num { background: var(--primary); color: #fff; }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
            color: #fff;
            border: none;
            text-align: center;
        }
        .sidebar-cta h3 { color: #fff; border-bottom-color: rgba(255,255,255,0.15); }
        .sidebar-cta h3 i { color: var(--accent); }
        .sidebar-cta p { color: rgba(255,255,255,0.8); font-size: 0.95rem; margin-bottom: 20px; }
        .sidebar-cta .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--accent);
            color: #fff;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .sidebar-cta .btn:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(244,162,97,0.35); }
        .sidebar-img {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-top: 12px;
        }
        .sidebar-img img { width: 100%; border-radius: var(--radius-sm); transition: var(--transition); }
        .sidebar-img:hover img { transform: scale(1.03); }

        /* ===== Not Found ===== */
        .not-found {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .not-found i { font-size: 4rem; color: var(--primary); margin-bottom: 20px; display: block; }
        .not-found h2 { font-size: 2rem; color: var(--secondary); margin-bottom: 12px; }
        .not-found p { color: var(--text-muted); max-width: 480px; margin: 0 auto 24px; }
        .not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 40px;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(230,57,70,0.35); }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.85);
            padding: 60px 0 0;
        }
        .footer .logo { color: #fff; }
        .footer .logo span { color: var(--accent); }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand p { font-size: 0.95rem; color: rgba(255,255,255,0.6); margin: 16px 0 20px; line-height: 1.7; max-width: 360px; }
        .social { display: flex; gap: 12px; }
        .social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.08);
            border-radius: 50%;
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .footer-col h4 {
            font-size: 1.05rem;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
        .footer-col ul a i { font-size: 0.8rem; width: 18px; color: var(--accent); }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            letter-spacing: 0.3px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Structured Data ===== */
        .hidden { display: none; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-body { padding: 36px 32px; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            h3 { font-size: 1.25rem; }
            .nav-links { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: var(--bg-white); flex-direction: column; padding: 16px 24px 24px; box-shadow: 0 20px 40px rgba(0,0,0,0.12); border-radius: 0 0 var(--radius-md) var(--radius-md); gap: 6px; }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 12px 20px; border-radius: var(--radius-sm); width: 100%; }
            .nav-toggle { display: flex; }
            .article-banner { padding: 60px 0 40px; min-height: 240px; }
            .article-banner h1 { font-size: 1.8rem; }
            .article-meta-bar { font-size: 0.85rem; gap: 12px; }
            .article-main { padding: 40px 0 60px; }
            .article-body { padding: 24px 20px; }
            .article-body .content { font-size: 1rem; }
            .article-nav { flex-direction: column; }
            .article-nav a { max-width: 100%; }
            .article-sidebar { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-brand p { max-width: 100%; }
            .sidebar-card { padding: 20px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-banner h1 { font-size: 1.5rem; }
            .article-body { padding: 16px; }
            .article-body .content h2 { font-size: 1.4rem; }
            .article-body .content h3 { font-size: 1.15rem; }
            .article-meta-bar { flex-direction: column; align-items: flex-start; gap: 8px; }
            .footer { padding: 40px 0 0; }
            .footer-bottom { font-size: 0.75rem; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2b4d7a;
            --accent: #f4a261;
            --accent-light: #f9c784;
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #0d1b2a;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #dee2e6;
            --border-light: #e9ecef;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 16px 48px rgba(230, 57, 70, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2.2vw, 1.6rem);
        }
        p {
            color: var(--text-light);
            margin-bottom: 0.8rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 顶部信息条 ===== */
        .topbar {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.82rem;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 16px;
        }
        .topbar a {
            color: rgba(255, 255, 255, 0.85);
        }
        .topbar a:hover {
            color: #fff;
        }
        .topbar-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .topbar-left i {
            margin-right: 4px;
        }
        .topbar-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .topbar-right .btn-top {
            background: var(--primary);
            color: #fff;
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
        }
        .topbar-right .btn-top:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        @media (max-width: 600px) {
            .topbar .container {
                justify-content: center;
                font-size: 0.75rem;
            }
            .topbar-right .btn-top {
                padding: 1px 10px;
                font-size: 0.72rem;
            }
        }

        /* ===== Header / Nav ===== */
        .header {
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
            height: var(--header-h);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
        }
        .logo i {
            font-size: 1.5rem;
            color: var(--primary);
        }
        .logo span {
            color: var(--secondary);
        }
        .logo:hover {
            opacity: 0.88;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a i {
            font-size: 0.9rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .nav-links a:hover {
            background: rgba(230, 57, 70, 0.06);
            color: var(--primary);
        }
        .nav-links a:hover i {
            color: var(--primary);
        }
        .nav-links a.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
        }
        .nav-links a.active i {
            color: var(--primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--secondary);
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            background: none;
        }
        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        @media (max-width: 820px) {
            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--bg-alt);
                flex-direction: column;
                padding: 16px 24px;
                gap: 6px;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: rgba(230, 57, 70, 0.10);
                border-left: 4px solid var(--primary);
            }
            .nav-toggle {
                display: block;
            }
        }

        /* ===== Banner / Hero 内页 ===== */
        .page-banner {
            position: relative;
            background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 80px 0 72px;
            text-align: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.82) 0%, rgba(230, 57, 70, 0.38) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            color: var(--text-white);
            font-weight: 800;
            margin-bottom: 12px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
        }
        .page-banner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 18px;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.18);
        }
        .page-banner .banner-tags {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 8px;
        }
        .page-banner .banner-tags span {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            color: #fff;
            padding: 4px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.10);
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 48px 0 40px;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            max-width: 620px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-title .title-accent {
            display: inline-block;
            width: 48px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin-top: 8px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                margin-bottom: 32px;
            }
        }

        /* ===== 赛事分类卡片网格 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 28px;
        }
        .cat-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .cat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .cat-card:hover::before {
            opacity: 1;
        }
        .cat-card .icon {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: inline-block;
            background: rgba(230, 57, 70, 0.08);
            width: 72px;
            height: 72px;
            line-height: 72px;
            border-radius: 50%;
            transition: var(--transition);
        }
        .cat-card:hover .icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.04);
        }
        .cat-card h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .cat-card p {
            font-size: 0.92rem;
            margin-bottom: 0;
        }
        .cat-card .badge {
            display: inline-block;
            margin-top: 12px;
            background: rgba(230, 57, 70, 0.06);
            color: var(--primary);
            padding: 2px 16px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
        }

        @media (max-width: 520px) {
            .category-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .cat-card {
                padding: 20px 16px;
            }
            .cat-card .icon {
                width: 56px;
                height: 56px;
                line-height: 56px;
                font-size: 2rem;
            }
        }
        @media (max-width: 400px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 热门赛事列表 ===== */
        .event-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .event-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 18px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .event-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }
        .event-item .event-icon {
            font-size: 1.6rem;
            color: var(--primary);
            width: 44px;
            text-align: center;
            flex-shrink: 0;
        }
        .event-item .event-info {
            flex: 1;
        }
        .event-item .event-info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 2px;
        }
        .event-item .event-info p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin: 0;
        }
        .event-item .event-status {
            flex-shrink: 0;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(230, 57, 70, 0.06);
            color: var(--primary);
        }
        .event-item .event-status.live {
            background: rgba(230, 57, 70, 0.12);
            color: var(--primary-dark);
            animation: pulse-dot 1.8s infinite;
        }
        .event-item .event-status.soon {
            background: rgba(244, 162, 97, 0.12);
            color: #c77d2a;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.6;
            }
        }
        @media (max-width: 640px) {
            .event-item {
                flex-wrap: wrap;
                gap: 12px;
                padding: 14px 16px;
            }
            .event-item .event-icon {
                width: 32px;
                font-size: 1.3rem;
            }
            .event-item .event-info h4 {
                font-size: 0.95rem;
            }
            .event-item .event-status {
                font-size: 0.72rem;
                padding: 2px 12px;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 28px;
            text-align: center;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            padding: 32px 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.15);
        }
        .stat-card .num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-card .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }
        @media (max-width: 600px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-card .num {
                font-size: 2rem;
            }
        }

        /* ===== 特色卡片 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .feature-card .f-icon {
            font-size: 2rem;
            color: var(--primary);
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            background: rgba(230, 57, 70, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
        }
        .feature-card .f-body h4 {
            font-size: 1.1rem;
            margin-bottom: 4px;
        }
        .feature-card .f-body p {
            font-size: 0.92rem;
            margin: 0;
        }
        @media (max-width: 640px) {
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .feature-card {
                padding: 20px 18px;
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .feature-card .f-icon {
                width: 48px;
                height: 48px;
                font-size: 1.6rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
            transition: var(--transition);
        }
        .faq-item .faq-q:hover {
            background: rgba(0, 0, 0, 0.02);
        }
        .faq-item .faq-q i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 0.85rem;
        }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }
        @media (max-width: 640px) {
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-item .faq-a {
                padding: 0 16px 14px;
                font-size: 0.88rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-dark) 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.10;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.78);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.30);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.40);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 48px 0;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.92rem;
                width: 100%;
                justify-content: center;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 32px;
            border-top: 4px solid var(--primary);
        }
        .footer .logo {
            margin-bottom: 12px;
        }
        .footer .logo span {
            color: #fff;
        }
        .footer .logo i {
            color: var(--primary-light);
        }
        .footer p {
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.92rem;
            max-width: 360px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-brand .social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.70);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-brand .social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 700;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer-col ul li a i {
            width: 16px;
            font-size: 0.8rem;
            color: var(--primary-light);
        }
        .footer-col ul li a:hover {
            color: #fff;
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.50);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer {
                padding: 36px 0 24px;
            }
        }

        /* ===== 回到顶部 ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            z-index: 999;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: var(--transition);
        }
        .back-top.show {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .back-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(230, 57, 70, 0.30);
        }
        @media (max-width: 600px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
        }