/* roulang page: index */
:root{
  --primary:#e8a33d;--primary-dark:#cf8c28;--primary-light:#fceed8;
  --deep:#0e1a2b;--deep2:#16263d;--bg:#f5f6f8;--white:#ffffff;
  --text:#2b3445;--muted:#6b7a90;--line:#e4e9f0;
  --radius:16px;--radius-sm:10px;--radius-lg:26px;
  --shadow-xs:0 2px 6px rgba(14,26,43,.05);
  --shadow-sm:0 4px 16px rgba(14,26,43,.06);
  --shadow-md:0 10px 30px rgba(14,26,43,.09);
  --shadow-lg:0 18px 50px rgba(14,26,43,.14);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,sans-serif;
  --ease:.28s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color var(--ease)}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit;border:none;outline:none}
.container{max-width:1220px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:50px;font-weight:700;font-size:15px;letter-spacing:.3px;cursor:pointer;transition:all var(--ease);border:2px solid transparent}
.btn-primary{background:var(--primary);color:#1a1305;box-shadow:0 8px 22px rgba(232,163,61,.35)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 28px rgba(232,163,61,.45)}
.btn-outline{border-color:rgba(255,255,255,.7);color:#fff;background:rgba(255,255,255,.08);backdrop-filter:blur(4px)}
.btn-outline:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-dark{background:var(--deep);color:#fff}
.btn-dark:hover{background:var(--deep2);transform:translateY(-2px)}
.btn-block{width:100%}
.tag{display:inline-flex;align-items:center;padding:4px 14px;border-radius:50px;background:var(--primary-light);color:var(--primary-dark);font-size:12px;font-weight:700}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:50px;font-size:12px;font-weight:700;background:rgba(232,163,61,.12);color:var(--primary-dark);border:1px solid rgba(232,163,61,.25)}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:300;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);box-shadow:var(--shadow-xs)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:12px}
.nav-left,.nav-right{display:flex;align-items:center;gap:8px;flex:1}
.nav-right{justify-content:flex-end}
.nav-link{position:relative;padding:8px 16px;border-radius:50px;font-size:15px;font-weight:600;color:var(--text);white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:center;transition:transform var(--ease)}
.nav-link:hover{color:var(--primary-dark)}
.nav-link.active{color:var(--primary-dark);background:var(--primary-light)}
.nav-link.active::after{transform:scaleX(1)}
.brand-logo{font-size:22px;font-weight:900;letter-spacing:.5px;color:var(--deep);line-height:1.2;text-align:center;white-space:nowrap}
.brand-logo span{color:var(--primary)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;background:var(--primary-light);color:var(--primary-dark);font-size:20px;cursor:pointer;align-items:center;justify-content:center;position:relative;z-index:310}

/* ===== Hero ===== */
.hero{position:relative;min-height:78vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(10,18,32,.82),rgba(16,28,46,.65),rgba(10,18,32,.82)),url('/assets/images/backpic/back-1.png') center/cover;color:#fff;padding:110px 0 80px;overflow:hidden}
.hero::before{content:"";position:absolute;width:620px;height:620px;border-radius:50%;background:radial-gradient(circle,rgba(232,163,61,.28),transparent 65%);top:-160px;right:-120px;pointer-events:none}
.hero::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(232,163,61,.16),transparent 60%);bottom:-120px;left:-80px;pointer-events:none}
.hero-inner{position:relative;z-index:2;max-width:860px;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:6px 18px;border-radius:50px;font-size:13px;font-weight:600;letter-spacing:1px;color:#f3d59a;backdrop-filter:blur(8px)}
.hero h1{font-size:52px;font-weight:900;line-height:1.18;margin:24px 0 16px;letter-spacing:1px;background:linear-gradient(100deg,#fff 30%,#ffe3ad 70%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{font-size:17px;line-height:1.8;color:rgba(255,255,255,.9);max-width:620px;margin:0 auto 30px}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:54px}
.hero-stats{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.stat-card{flex:1;min-width:150px;max-width:220px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:20px;padding:22px 16px;backdrop-filter:blur(10px);text-align:center;transition:all var(--ease)}
.stat-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.16)}
.stat-card strong{display:block;font-size:28px;font-weight:900;color:#ffd98a;margin-bottom:2px}
.stat-card span{font-size:13px;color:rgba(255,255,255,.85)}

/* ===== Section ===== */
.section{padding:92px 0}
.section-head{text-align:center;max-width:680px;margin:0 auto 54px}
.section-head .eyebrow{display:inline-block;font-size:13px;font-weight:800;letter-spacing:1px;text-transform:uppercase;color:var(--primary-dark);background:var(--primary-light);padding:6px 16px;border-radius:50px;margin-bottom:14px}
.section-head h2{font-size:36px;font-weight:900;color:var(--deep);line-height:1.2;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15px;line-height:1.8}

/* ===== Feature Cards ===== */
.feature-card{background:var(--white);border-radius:var(--radius);padding:34px 26px;border:1px solid var(--line);box-shadow:var(--shadow-xs);height:100%;transition:all var(--ease)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(232,163,61,.35)}
.feature-icon{width:58px;height:58px;border-radius:16px;background:linear-gradient(135deg,var(--primary-light),#fff);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary-dark);margin-bottom:18px}
.feature-card h3{font-size:19px;font-weight:800;color:var(--deep);margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--muted);line-height:1.75}
.text-center{text-align:center}
.text-left{text-align:left}

/* ===== Category Cards ===== */
.cat-card{border-radius:var(--radius-lg);overflow:hidden;background:var(--white);box-shadow:var(--shadow-sm);height:100%;display:block;transition:all var(--ease);border:1px solid var(--line)}
.cat-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:rgba(232,163,61,.4)}
.cat-card .cover{position:relative;height:200px;overflow:hidden}
.cat-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.cat-card:hover .cover img{transform:scale(1.06)}
.cat-card .cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(10,18,32,.45))}
.cat-card .cover .tag{position:absolute;top:16px;left:16px;z-index:2;background:rgba(255,255,255,.94);color:var(--primary-dark);box-shadow:var(--shadow-sm)}
.cat-card .body{padding:24px}
.cat-card .body h3{font-size:20px;font-weight:800;color:var(--deep);margin-bottom:6px}
.cat-card .body p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:14px}
.cat-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--primary-dark)}
.cat-link i{transition:transform var(--ease)}
.cat-card:hover .cat-link i{transform:translateX(6px)}

/* ===== Ranking ===== */
.rank-wrap{background:var(--deep);border-radius:var(--radius-lg);padding:46px;overflow:hidden;position:relative}
.rank-wrap::before{content:"";position:absolute;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(232,163,61,.22),transparent 65%);top:-100px;right:-60px}
.rank-item{display:flex;align-items:center;gap:22px;padding:20px 16px;border-radius:18px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);margin-bottom:14px;transition:all var(--ease)}
.rank-item:last-child{margin-bottom:0}
.rank-item:hover{background:rgba(255,255,255,.09);transform:translateX(6px)}
.rank-num{font-size:26px;font-weight:900;color:rgba(232,163,61,.7);width:44px;text-align:center}
.rank-thumb{width:66px;height:66px;border-radius:14px;object-fit:cover;flex-shrink:0}
.rank-info{flex:1;min-width:0}
.rank-info h3{font-size:17px;font-weight:800;color:#fff;margin-bottom:2px}
.rank-info p{font-size:13px;color:rgba(255,255,255,.6);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank-meta{text-align:right}
.rank-meta .hot{color:#ffd98a;font-size:13px;font-weight:700}

/* ===== Split Feature ===== */
.split-box{display:flex;gap:54px;align-items:center}
.split-box.rev{flex-direction:row-reverse}
.split-media{flex:1.05}
.split-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);width:100%;height:420px;object-fit:cover}
.split-content{flex:1;text-align:left}
.split-content .eyebrow{display:inline-block;font-size:13px;font-weight:800;color:var(--primary-dark);background:var(--primary-light);padding:6px 16px;border-radius:50px;margin-bottom:14px}
.split-content h2{font-size:34px;font-weight:900;color:var(--deep);line-height:1.25;margin-bottom:18px}
.split-content p{color:var(--muted);line-height:1.85;margin-bottom:20px}
.split-list{list-style:none}
.split-list li{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px;color:var(--text)}
.split-list li i{color:var(--primary-dark);background:var(--primary-light);width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0;margin-top:4px}

/* ===== News List ===== */
.news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow-xs);transition:all var(--ease);position:relative}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(232,163,61,.35)}
.news-card .meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted)}
.news-card h3{font-size:16px;font-weight:800;color:var(--deep);line-height:1.5}
.news-card h3:hover{color:var(--primary-dark)}
.news-card .excerpt{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted)}

/* ===== Steps ===== */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:30px 22px;text-align:center;position:relative;transition:all var(--ease)}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.step-num{position:absolute;top:18px;left:20px;font-size:15px;font-weight:900;color:var(--primary);background:var(--primary-light);width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center}
.step-icon{width:64px;height:64px;border-radius:20px;background:linear-gradient(135deg,var(--primary-light),#fff);display:flex;align-items:center;justify-content:center;font-size:26px;color:var(--primary-dark);margin:0 auto 16px}
.step-card h3{font-size:17px;font-weight:800;color:var(--deep);margin-bottom:6px}
.step-card p{font-size:13px;color:var(--muted);line-height:1.7}

/* ===== FAQ ===== */
.faq-wrap{max-width:850px;margin:0 auto}
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:16px;margin-bottom:14px;overflow:hidden;transition:box-shadow var(--ease)}
.faq-item.open{box-shadow:var(--shadow-sm)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;background:none;font-size:16px;font-weight:700;color:var(--deep);cursor:pointer;text-align:left;gap:14px}
.faq-q i{color:var(--primary-dark);font-size:18px;flex-shrink:0;transition:transform var(--ease)}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease}
.faq-item.open .faq-a{padding:0 24px 22px;max-height:220px}
.faq-a p{font-size:14px;color:var(--muted);line-height:1.8}

/* ===== CTA ===== */
.cta-section{position:relative;padding:0;border-radius:0;background:linear-gradient(120deg,rgba(10,18,32,.85),rgba(16,28,46,.72),rgba(10,18,32,.88)),url('/assets/images/backpic/back-2.png') center/cover}
.cta-wrap{text-align:center;padding:100px 24px;color:#fff}
.cta-wrap h2{font-size:38px;font-weight:900;margin-bottom:14px}
.cta-wrap p{color:rgba(255,255,255,.85);max-width:560px;margin:0 auto 26px;font-size:16px}
.cta-btns{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ===== Footer ===== */
.site-footer{background:var(--deep);color:rgba(255,255,255,.7);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-brand{font-size:22px;font-weight:900;color:#fff;line-height:1.3;display:inline-block;margin-bottom:12px}
.footer-brand span{color:var(--primary)}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);margin-top:12px}
.footer-col h4{font-size:16px;font-weight:800;color:#fff;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:3px;border-radius:3px;background:var(--primary)}
.footer-col a{display:block;padding:5px 0;font-size:14px;color:rgba(255,255,255,.6);transition:all var(--ease)}
.footer-col a:hover{color:var(--primary);padding-left:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:24px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.45)}
.footer-bottom a{color:rgba(255,255,255,.6)}

/* ===== Inner Page ===== */
.page-banner{position:relative;padding:110px 0 76px;background:linear-gradient(100deg,rgba(10,18,32,.85),rgba(16,28,46,.7),rgba(10,18,32,.85)),url('/assets/images/backpic/back-3.png') center/cover;color:#fff;text-align:center}
.page-banner h1{font-size:40px;font-weight:900;margin-bottom:10px}
.page-banner p{color:rgba(255,255,255,.8);max-width:620px;margin:0 auto;font-size:15px}
.breadcrumb{display:inline-flex;gap:8px;align-items:center;margin-top:16px;font-size:13px;color:rgba(255,255,255,.65);background:rgba(255,255,255,.1);padding:6px 18px;border-radius:50px}
.breadcrumb a{color:rgba(255,255,255,.85)}
.breadcrumb i{font-size:10px}

.game-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.game-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--line);transition:all var(--ease)}
.game-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(232,163,61,.3)}
.game-card .g-cover{height:200px;overflow:hidden;position:relative}
.game-card .g-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.game-card:hover .g-cover img{transform:scale(1.05)}
.game-card .g-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(10,18,32,.5))}
.game-card .g-body{padding:22px}
.game-card .g-body h3{font-size:18px;font-weight:800;color:var(--deep);margin-bottom:6px}
.game-card .g-body p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:12px}

/* ===== Article ===== */
.article-wrap{display:grid;grid-template-columns:1fr 320px;gap:44px;align-items:start}
.article-main{background:var(--white);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.article-main h1{font-size:30px;font-weight:900;color:var(--deep);line-height:1.35;margin-bottom:14px}
.article-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted);padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:26px}
.article-meta .tag{font-size:12px}
.article-content{font-size:15px;line-height:2;color:var(--text)}
.article-content p{margin-bottom:18px}
.article-content h2,.article-content h3{margin:26px 0 12px;color:var(--deep)}
.article-content img{border-radius:14px;margin:18px 0}
.article-content ul,.article-content ol{padding-left:22px;margin-bottom:18px}
.not-found{text-align:center;padding:70px 20px}
.not-found i{font-size:52px;color:var(--primary);margin-bottom:16px}
.not-found h2{font-size:26px;color:var(--deep);margin-bottom:8px}
.not-found p{color:var(--muted);margin-bottom:24px}
.article-side{position:sticky;top:92px;display:flex;flex-direction:column;gap:24px}
.side-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-xs)}
.side-card h3{font-size:16px;font-weight:800;color:var(--deep);margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--primary-light)}
.side-list{list-style:none}
.side-list li{margin-bottom:10px}
.side-list a{font-size:14px;color:var(--muted);display:flex;gap:8px;align-items:center}
.side-list a::before{content:"\f105";font-family:"Font Awesome 6 Free";font-weight:900;color:var(--primary-dark);font-size:12px}
.side-list a:hover{color:var(--primary-dark)}

/* ===== Pagination ===== */
.pagination-box{display:flex;justify-content:center;gap:8px;margin-top:36px}
.pagination-box a,.pagination-box span{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 14px;border-radius:10px;background:var(--white);border:1px solid var(--line);color:var(--text);font-size:14px;font-weight:700;transition:all var(--ease)}
.pagination-box a:hover{border-color:var(--primary);color:var(--primary-dark)}
.pagination-box .current{background:var(--primary);border-color:var(--primary);color:#1a1305}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .hero h1{font-size:44px}
  .section{padding:72px 0}
  .step-grid{grid-template-columns:repeat(2,1fr)}
  .rank-wrap{padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .nav-left,.nav-right{position:fixed;top:72px;width:250px;flex-direction:column;background:rgba(255,255,255,.97);box-shadow:var(--shadow-lg);padding:20px;gap:6px;border-radius:0 0 18px 18px;display:none;backdrop-filter:blur(14px);z-index:305;align-items:stretch}
  .nav-left{left:0}.nav-right{right:0}
  .nav-inner.nav-open .nav-left,.nav-inner.nav-open .nav-right{display:flex}
  .nav-link{padding:12px 16px;text-align:center}
  .nav-link::after{display:none}
  .split-box,.split-box.rev{flex-direction:column;gap:28px}
  .split-media img{height:280px}
  .news-list{grid-template-columns:1fr}
  .hero{min-height:70vh}
  .hero h1{font-size:38px}
  .hero-sub{font-size:15px}
  .cta-wrap h2{font-size:30px}
  .article-wrap{grid-template-columns:1fr}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1;min-width:240px}
}
@media (max-width:768px){
  .game-grid{grid-template-columns:repeat(2,1fr)}
  .section-head h2{font-size:28px}
  .page-banner h1{font-size:30px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .hero{padding:90px 0 60px}
  .hero h1{font-size:30px;line-height:1.3}
  .stat-card{min-width:100%}
  .hero-btns{gap:10px}
  .btn{padding:11px 22px;font-size:14px}
  .step-grid,.game-grid,.news-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .rank-meta{display:none}
  .rank-item{gap:12px}
  .rank-thumb{width:56px;height:56px}
  .article-main{padding:24px}
  .split-media img{height:210px}
  .cta-wrap{padding:70px 20px}
  .cta-wrap h2{font-size:26px}
}

/* roulang page: article */
:root {
    --primary: #1d4ed8;
    --primary-dark: #1e40af;
    --primary-light: #dbeafe;
    --accent: #f59e0b;
    --accent-light: #fbbf24;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --bg: #f8fafc;
    --text: #1e293b;
    --text-weak: #64748b;
    --border: #e2e8f0;
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 22px;
    --shadow-sm: 0 2px 8px rgba(15,23,42,.06);
    --shadow: 0 8px 28px rgba(15,23,42,.08);
    --shadow-lg: 0 18px 50px rgba(15,23,42,.12);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; color: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    display: flex; align-items: center;
    justify-content: space-between;
    min-height: 72px;
    position: relative;
}
.brand-logo {
    position: absolute; left: 50%; transform: translateX(-50%);
    font-size: 22px; font-weight: 800; letter-spacing: .5px;
    color: var(--primary); white-space: nowrap;
    display: flex; align-items: center; gap: 2px;
}
.brand-logo span { color: var(--accent); font-size: 28px; line-height: 1; }
.nav-left, .nav-right { display: flex; align-items: center; gap: 6px; }
.nav-link {
    padding: 8px 16px; border-radius: 999px;
    font-size: 15px; font-weight: 500; color: var(--dark-2);
    transition: all .25s ease; position: relative;
}
.nav-link:hover { background: var(--primary-light); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(29,78,216,.3); }
.nav-toggle {
    display: none; align-items: center; justify-content: center;
    width: 42px; height: 42px; border: 1px solid var(--border);
    border-radius: 10px; background: #fff; cursor: pointer;
    font-size: 18px; color: var(--dark-2); transition: all .25s;
}
.nav-toggle:hover { border-color: var(--primary); color: var(--primary); }

/* Page Banner */
.article-banner {
    position: relative; padding: 76px 0 84px;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, #1d4ed8 100%);
    background-size: cover; background-position: center;
    overflow: hidden;
}
.article-banner::before {
    content: ""; position: absolute; inset: 0;
    background: rgba(15,23,42,.62);
}
.article-banner .container { position: relative; z-index: 2; }
.breadcrumb {
    display: flex; align-items: center; gap: 10px;
    color: rgba(255,255,255,.72); font-size: 14px; margin-bottom: 22px;
    flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,.85); transition: color .25s; }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb i { font-size: 12px; color: rgba(255,255,255,.45); }
.breadcrumb span { color: var(--accent-light); }
.article-banner h1 {
    font-size: 38px; line-height: 1.35; font-weight: 800;
    color: #fff; max-width: 860px; letter-spacing: .5px;
    margin-bottom: 18px; text-shadow: 0 2px 16px rgba(0,0,0,.25);
}
.article-meta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 5px 14px; border-radius: 999px;
    font-size: 13px; font-weight: 600; background: var(--accent); color: #fff;
}
.article-meta .meta-item {
    display: inline-flex; align-items: center; gap: 7px;
    color: rgba(255,255,255,.82); font-size: 14px;
}
.article-meta .meta-item i { color: var(--accent-light); }

/* Article Main */
.section { padding: 72px 0; }
.article-main { background: var(--bg); }
.article-layout {
    display: grid; grid-template-columns: minmax(0,1fr) 340px;
    gap: 44px; align-items: start;
}
.article-content-wrap {
    background: #fff; border-radius: var(--radius-lg);
    box-shadow: var(--shadow); padding: 44px;
    border: 1px solid var(--border);
}
.article-content { font-size: 16px; color: #334155; }
.article-content h2 {
    font-size: 26px; font-weight: 700; color: var(--dark);
    margin: 36px 0 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border);
}
.article-content h3 { font-size: 21px; font-weight: 700; color: var(--dark); margin: 28px 0 12px; }
.article-content p { margin-bottom: 18px; line-height: 1.85; }
.article-content img { border-radius: var(--radius); margin: 24px 0; box-shadow: var(--shadow-sm); }
.article-content ul, .article-content ol { margin: 0 0 20px 24px; }
.article-content li { margin-bottom: 6px; }
.article-content blockquote {
    border-left: 4px solid var(--accent); background: #fffbeb;
    padding: 16px 20px; border-radius: 0 12px 12px 0; margin: 22px 0;
    color: #78350f; font-style: italic;
}
.article-content strong { color: var(--dark); font-weight: 700; }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--accent); }
.article-content table { width: 100%; border-collapse: collapse; margin: 22px 0; font-size: 14px; }
.article-content th { background: var(--dark); color: #fff; text-align: left; padding: 12px 14px; }
.article-content td { padding: 10px 14px; border-bottom: 1px solid var(--border); }

.article-tags {
    margin-top: 36px; padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.tag-label { font-size: 14px; font-weight: 600; color: var(--text-weak); margin-right: 4px; }
.tag {
    display: inline-block; padding: 6px 14px; border-radius: 999px;
    background: var(--primary-light); color: var(--primary);
    font-size: 13px; font-weight: 500; transition: all .25s;
}
.tag:hover { background: var(--primary); color: #fff; }

.not-found-box {
    text-align: center; padding: 60px 30px;
}
.not-found-box i { font-size: 52px; color: #cbd5e1; margin-bottom: 18px; }
.not-found-box h2 { font-size: 26px; color: var(--dark); margin-bottom: 10px; }
.not-found-box p { color: var(--text-weak); margin-bottom: 24px; }

/* Sidebar */
.article-sidebar { display: flex; flex-direction: column; gap: 24px; position: sticky; top: 90px; }
.side-card {
    background: #fff; border-radius: var(--radius);
    padding: 24px; border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}
.side-card h3 {
    font-size: 17px; font-weight: 700; color: var(--dark);
    margin-bottom: 16px; padding-bottom: 12px;
    border-bottom: 2px solid var(--primary);
    display: flex; align-items: center; gap: 8px;
}
.side-card h3::before { content: ""; width: 4px; height: 18px; background: var(--accent); border-radius: 4px; }
.info-card ul { list-style: none; }
.info-card li {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 0; border-bottom: 1px dashed var(--border);
    font-size: 14px; color: var(--dark-2);
}
.info-card li:last-child { border-bottom: none; }
.info-card li i { color: var(--primary); width: 18px; text-align: center; }
.category-list { display: flex; flex-direction: column; gap: 12px; }
.category-item {
    display: flex; align-items: center; gap: 14px;
    padding: 12px; border-radius: var(--radius);
    border: 1px solid var(--border); transition: all .25s ease;
    background: #f8fafc;
}
.category-item img { width: 58px; height: 58px; border-radius: 10px; object-fit: cover; }
.category-item strong { display: block; font-size: 15px; color: var(--dark); margin-bottom: 4px; }
.category-item span { font-size: 12px; color: var(--text-weak); }
.category-item:hover { transform: translateX(4px); border-color: var(--primary); box-shadow: var(--shadow-sm); background: #fff; }

/* Related */
.related-section { background: #fff; border-top: 1px solid var(--border); }
.section-head { text-align: center; margin-bottom: 44px; }
.section-head h2 { font-size: 30px; font-weight: 800; color: var(--dark); letter-spacing: .5px; }
.section-head h2::after { content: ""; display: block; width: 48px; height: 4px; background: var(--accent); border-radius: 4px; margin: 12px auto 0; }
.section-head p { color: var(--text-weak); font-size: 16px; margin-top: 10px; }
.related-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.related-card {
    background: var(--bg); border-radius: var(--radius-lg);
    border: 1px solid var(--border); overflow: hidden;
    transition: all .35s ease; display: block;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: #cbd5e1; }
.cover-img { height: 190px; overflow: hidden; position: relative; background: var(--dark-2); }
.cover-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.related-card:hover .cover-img img { transform: scale(1.06); }
.cover-img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, rgba(15,23,42,.35)); }
.related-body { padding: 22px; position: relative; }
.related-body .badge { margin-bottom: 10px; font-size: 12px; padding: 4px 12px; }
.related-body h3 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 8px; line-height: 1.4; }
.related-body p { font-size: 14px; color: var(--text-weak); line-height: 1.65; }

/* FAQ */
.faq-section { background: var(--bg); }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 960px; margin: 0 auto; }
.faq-item {
    background: #fff; border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px;
    transition: all .3s ease; display: flex; gap: 16px;
}
.faq-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.faq-icon {
    width: 42px; height: 42px; border-radius: 12px;
    background: var(--primary-light); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; flex-shrink: 0;
}
.faq-item h3 { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.faq-item p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* CTA */
.cta-section { padding: 40px 0 72px; }
.cta-box {
    background: linear-gradient(120deg, var(--dark) 0%, #1e3a8a 100%);
    border-radius: var(--radius-lg); padding: 56px 44px;
    text-align: center; color: #fff; position: relative; overflow: hidden;
}
.cta-box::before {
    content: ""; position: absolute; width: 320px; height: 320px;
    background: radial-gradient(circle, rgba(245,158,11,.25), transparent 60%);
    top: -80px; right: -60px; border-radius: 50%;
}
.cta-box h2 { font-size: 30px; font-weight: 800; margin-bottom: 12px; }
.cta-box p { font-size: 16px; color: rgba(255,255,255,.82); margin-bottom: 28px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 2; }
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 13px 30px; border-radius: 999px;
    font-size: 15px; font-weight: 600; cursor: pointer;
    border: 2px solid transparent; transition: all .28s ease;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 6px 22px rgba(245,158,11,.4); }
.btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(245,158,11,.45); }
.btn-outline { background: transparent; border-color: rgba(255,255,255,.6); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,.12); border-color: #fff; transform: translateY(-2px); }
.btn-primary-off { background: var(--primary); color: #fff; box-shadow: 0 6px 22px rgba(29,78,216,.35); }
.btn-primary-off:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-outline-off { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline-off:hover { background: var(--primary-light); transform: translateY(-2px); }

/* Footer */
.site-footer { background: var(--dark); color: rgba(255,255,255,.75); padding: 60px 0 0; }
.footer-grid {
    display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px; padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand { font-size: 22px; font-weight: 800; color: #fff; }
.footer-brand span { color: var(--accent); font-size: 28px; }
.footer-about { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.6); margin-top: 14px; max-width: 300px; }
.footer-col h4 {
    font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px;
    text-transform: none; position: relative; padding-bottom: 8px;
}
.footer-col h4::after { content: ""; position: absolute; bottom: 0; left: 0; width: 24px; height: 3px; background: var(--accent); border-radius: 3px; }
.footer-col a {
    display: block; color: rgba(255,255,255,.6); font-size: 14px;
    padding: 6px 0; transition: all .25s ease;
}
.footer-col a:hover { color: var(--accent-light); padding-left: 6px; }
.footer-col a i { width: 18px; margin-right: 4px; }
.footer-bottom {
    padding: 20px 0; text-align: center;
    font-size: 13px; color: rgba(255,255,255,.4);
    border-top: 1px solid rgba(255,255,255,.06);
}

/* Responsive */
@media (max-width: 1024px) {
    .nav-toggle { display: flex; }
    .brand-logo { position: static; transform: none; font-size: 18px; }
    .brand-logo span { font-size: 23px; }
    .header-inner { min-height: 64px; gap: 10px; }
    .nav-left, .nav-right {
        display: none; position: absolute; top: 64px; left: 0; right: 0;
        background: #fff; flex-direction: column; align-items: flex-start;
        padding: 14px 20px; gap: 4px; z-index: 99;
        border-bottom: 1px solid var(--border); box-shadow: var(--shadow);
    }
    .nav-left.open, .nav-right.open { display: flex; }
    .nav-link { width: 100%; padding: 12px 16px; border-radius: 10px; font-size: 15px; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
    .article-banner h1 { font-size: 28px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .faq-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
    .section { padding: 52px 0; }
    .article-banner { padding: 48px 0 56px; }
    .article-banner h1 { font-size: 24px; }
    .article-content-wrap { padding: 24px 18px; }
    .related-grid { grid-template-columns: 1fr; }
    .cta-box { padding: 40px 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; padding-bottom: 30px; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .article-meta { gap: 10px; }
    .article-tags { flex-direction: column; align-items: flex-start; }
    .btn { width: 100%; justify-content: center; }
    .not-found-box i { font-size: 42px; }
}

/* roulang page: category1 */
:root {
  --primary: #101c34;
  --primary-light: #1b2f4a;
  --accent: #f0b84b;
  --accent-dark: #d99e2b;
  --accent-soft: rgba(240, 184, 75, 0.14);
  --bg: #f6f8fb;
  --bg-alt: #eef2f7;
  --card-bg: #ffffff;
  --text: #17233b;
  --text-weak: #6b7a8f;
  --border: #e3e8ef;
  --radius-lg: 22px;
  --radius-md: 15px;
  --radius-sm: 9px;
  --shadow-xs: 0 3px 12px rgba(15, 28, 46, 0.05);
  --shadow-sm: 0 6px 18px rgba(15, 28, 46, 0.07);
  --shadow-md: 0 12px 32px rgba(15, 28, 46, 0.1);
  --shadow-lg: 0 22px 48px rgba(15, 28, 46, 0.15);
  --section-space: 88px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: all 0.25s ease; }
img { max-width: 100%; display: block; }
button, input, textarea { font-family: inherit; }
h1, h2, h3, h4, h5, h6 { margin: 0 0 0.5em; line-height: 1.35; color: var(--primary); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: var(--section-space) 0; }
.alt-bg { background: var(--bg-alt); }

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 52px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--accent-dark);
  background: var(--accent-soft);
  padding: 5px 16px;
  border-radius: 999px;
  font-weight: 600;
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 14px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-weak);
}

/* ===== Header ===== */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(15, 28, 46, 0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  position: relative;
}
.nav-left, .nav-right { display: flex; align-items: center; gap: 6px; }
.nav-link {
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
}
.nav-link:hover { background: var(--accent-soft); color: var(--accent-dark); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 6px 16px rgba(15, 28, 46, 0.22); }
.brand-logo {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--primary);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  line-height: 1.2;
}
.brand-logo span { color: var(--accent); margin: 0 2px; }
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  font-size: 22px;
  color: var(--primary);
  cursor: pointer;
  padding: 8px;
  border-radius: 10px;
}
.nav-toggle:hover { background: var(--accent-soft); }

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding: 100px 0 82px;
  background: linear-gradient(135deg, rgba(13, 24, 48, 0.94), rgba(26, 46, 78, 0.88)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  color: #fff;
  text-align: center;
}
.banner-inner { position: relative; z-index: 1; }
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 24px;
}
.breadcrumb a { color: rgba(255, 255, 255, 0.6); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 10px; }
.page-banner h1 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
  color: #fff;
}
.page-banner p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.78);
  max-width: 640px;
  margin: 0 auto;
}
.banner-tags {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.banner-tags span {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 14px;
  backdrop-filter: blur(8px);
  transition: background 0.3s;
}
.banner-tags span:hover { background: rgba(255, 255, 255, 0.22); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  transition: all 0.3s ease;
  cursor: pointer;
  border: 0;
}
.btn-solid { background: var(--primary); color: #fff; box-shadow: 0 10px 24px rgba(15, 28, 46, 0.24); }
.btn-solid:hover { background: #16263f; color: #fff; transform: translateY(-3px); box-shadow: 0 14px 34px rgba(15, 28, 46, 0.3); }
.btn-ghost { background: transparent; color: var(--primary); border: 1.5px solid var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-dark); background: var(--accent-soft); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { background: var(--accent); color: #fff; transform: translateY(-3px); box-shadow: 0 14px 30px rgba(240, 184, 75, 0.4); }
.btn-outline-light { background: transparent; color: #fff; border: 1.5px solid rgba(255, 255, 255, 0.5); }
.btn-outline-light:hover { border-color: #fff; background: rgba(255, 255, 255, 0.12); color: #fff; transform: translateY(-2px); }

/* ===== Guide Cards ===== */
.guide-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.guide-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }
.guide-cover { position: relative; }
.guide-cover img { width: 100%; height: 190px; object-fit: cover; }
.guide-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(15, 28, 46, 0.84);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}
.guide-body { padding: 24px; }
.guide-body h3 { font-size: 18px; margin-bottom: 10px; }
.guide-body p { font-size: 14px; color: var(--text-weak); margin-bottom: 18px; }
.guide-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-weak);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
.guide-meta i { margin-right: 4px; }
.guide-meta a { color: var(--primary); font-weight: 600; }
.guide-meta a:hover { color: var(--accent-dark); }
.guide-meta a i { transition: transform 0.25s; }
.guide-meta a:hover i { transform: translateX(4px); }

/* ===== Split Layout ===== */
.split-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}
.split-text h2 { font-size: 32px; font-weight: 800; margin-bottom: 16px; }
.split-text > p { font-size: 15px; color: var(--text-weak); margin-bottom: 24px; }
.split-media { position: relative; }
.split-media::before {
  content: '';
  position: absolute;
  top: -18px;
  right: -18px;
  width: 62%;
  height: 62%;
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(240, 184, 75, 0.28), transparent);
  z-index: 0;
}
.split-media img {
  border-radius: 26px;
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 1;
  width: 100%;
  object-fit: cover;
}
.split-actions { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }

.check-list { list-style: none; padding: 0; margin: 0 0 8px; }
.check-list li {
  position: relative;
  padding-left: 36px;
  margin-bottom: 14px;
  font-size: 15px;
}
.check-list li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 1px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== Tech Cards ===== */
.tech-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 30px 24px;
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}
.tech-card::after {
  content: '';
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--accent-soft);
  opacity: 0;
  transition: opacity 0.3s;
}
.tech-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: rgba(240, 184, 75, 0.4);
}
.tech-card:hover::after { opacity: 1; }
.tech-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), #243957);
  color: var(--accent);
  font-size: 22px;
  margin-bottom: 18px;
  box-shadow: 0 10px 22px rgba(15, 28, 46, 0.2);
}
.tech-card h3 { font-size: 18px; margin-bottom: 10px; }
.tech-card p { font-size: 14px; color: var(--text-weak); margin-bottom: 16px; }
.tech-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--accent-dark);
  background: var(--accent-soft);
  padding: 4px 12px;
  border-radius: 999px;
}

/* ===== Roadmap ===== */
.roadmap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.road-step {
  background: var(--card-bg);
  border-radius: 18px;
  padding: 34px 24px 30px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.road-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.road-step::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -24px;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.road-step:last-child::after { display: none; }
.step-num {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: var(--primary);
  color: var(--accent);
  font-weight: 800;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 10px 22px rgba(15, 28, 46, 0.22);
}
.road-step h3 { font-size: 18px; margin-bottom: 10px; }
.road-step p { font-size: 14px; color: var(--text-weak); margin-bottom: 0; }

/* ===== Rank List ===== */
.rank-list {
  max-width: 860px;
  margin: 0 auto;
  background: var(--card-bg);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  padding: 10px 24px;
  border: 1px solid var(--border);
}
.rank-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 8px;
  border-bottom: 1px solid var(--border);
  transition: background 0.25s ease;
}
.rank-item:last-child { border-bottom: 0; }
.rank-item:hover { background: #faf9f4; }
.rank-num {
  font-size: 28px;
  font-weight: 900;
  color: var(--accent);
  font-style: italic;
  width: 50px;
  text-align: center;
  flex-shrink: 0;
}
.rank-info { flex: 1; }
.rank-info h3 { font-size: 17px; margin-bottom: 8px; line-height: 1.4; }
.rank-meta { display: flex; gap: 12px; font-size: 13px; color: var(--text-weak); flex-wrap: wrap; }
.rank-tag {
  background: var(--accent-soft);
  color: var(--accent-dark);
  padding: 2px 12px;
  border-radius: 999px;
  font-weight: 600;
}
.rank-meta i { margin-right: 4px; }
.rank-link {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--primary);
  font-size: 15px;
  flex-shrink: 0;
}
.rank-link:hover {
  background: var(--primary);
  color: #fff;
  transform: translateX(4px);
}

/* ===== FAQ ===== */
.faq-container { max-width: 880px; }
.faq-accordion.accordion { border: 0; background: transparent; margin: 0; list-style: none; }
.faq-accordion .accordion-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.faq-accordion .accordion-item.is-active {
  border-color: rgba(240, 184, 75, 0.45);
  box-shadow: var(--shadow-md);
}
.faq-accordion .accordion-title {
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  padding: 22px 26px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.faq-accordion .accordion-title::before,
.faq-accordion .accordion-title::after { content: none !important; }
.faq-accordion .accordion-title:hover { color: var(--primary); background: transparent; }
.faq-accordion .q-num {
  background: var(--primary);
  color: var(--accent);
  padding: 4px 11px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1.6;
}
.faq-accordion .q-text { flex: 1; }
.faq-accordion .accordion-icon {
  margin-left: auto;
  color: var(--accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-accordion .accordion-item.is-active .accordion-icon { transform: rotate(180deg); }
.faq-accordion .accordion-content {
  border: 0;
  background: transparent;
  padding: 0 26px 24px;
  color: var(--text-weak);
  font-size: 15px;
}
.faq-accordion .accordion-content p { margin: 0; }

/* ===== CTA ===== */
.cta-section { padding: 70px 0 90px; }
.cta-box {
  background: linear-gradient(135deg, rgba(13, 24, 48, 0.95), rgba(26, 46, 78, 0.9)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  border-radius: 26px;
  padding: 58px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  color: #fff;
  flex-wrap: wrap;
}
.cta-content { flex: 1; min-width: 260px; }
.cta-content .section-eyebrow { color: var(--accent); background: rgba(255, 255, 255, 0.1); }
.cta-content h2 {
  font-size: 30px;
  color: #fff;
  margin-bottom: 12px;
  font-weight: 800;
}
.cta-content p { font-size: 15px; color: rgba(255, 255, 255, 0.75); margin-bottom: 0; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer {
  background: #0d1830;
  color: #aab7cd;
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 42px;
}
.footer-brand {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
}
.footer-brand span { color: var(--accent); }
.footer-about {
  color: #8ea0bb;
  font-size: 14px;
  margin-top: 14px;
  max-width: 360px;
  line-height: 1.8;
}
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 8px; }
.footer-col a {
  color: #aab7cd;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
}
.footer-col a:hover { color: var(--accent); transform: translateX(4px); }
.footer-bottom { text-align: center; padding-top: 26px; font-size: 13px; color: #7b8ba3; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .roadmap { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .road-step::after { display: none; }
  .split-layout { gap: 40px; }
  .page-banner h1 { font-size: 36px; }
  .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; }
}

@media (max-width: 768px) {
  .container { padding: 0 18px; }
  .section { padding: 60px 0; }
  .section-head { margin-bottom: 38px; }
  .section-head h2 { font-size: 26px; }
  .section-head p { font-size: 15px; }
  .page-banner { padding: 70px 0 56px; }
  .page-banner h1 { font-size: 28px; }
  .page-banner p { font-size: 15px; }
  .split-layout { grid-template-columns: 1fr; gap: 32px; }
  .split-text h2 { font-size: 26px; }
  .guide-cover img { height: 160px; }
  .cta-box { flex-direction: column; text-align: center; padding: 44px 28px; }
  .cta-actions { justify-content: center; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
  .rank-list { padding: 8px 16px; }
  .rank-item { gap: 14px; padding: 16px 6px; }
  .rank-num { font-size: 22px; width: 38px; }
  .faq-accordion .accordion-title { padding: 18px 20px; font-size: 15px; }
  .faq-accordion .accordion-title .q-num { padding: 3px 8px; font-size: 12px; }
  .faq-accordion .accordion-content { padding: 0 20px 20px; }

  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 16px;
  }
  .nav-left, .nav-right {
    order: 3;
    flex-basis: 50%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    margin-top: 12px;
  }
  .nav-right { border-left: 1px solid var(--border); padding-left: 12px; }
  .site-header.nav-open .nav-left,
  .site-header.nav-open .nav-right { display: flex; }
  .nav-link { padding: 12px 16px; border-radius: 12px; }
  .nav-toggle { display: block; margin-left: auto; }
  .brand-logo { font-size: 18px; }
}

@media (max-width: 520px) {
  .nav-left, .nav-right { flex-basis: 100%; border-left: 0; padding-left: 0; }
  .nav-right { border-top: 0; padding-top: 4px; margin-top: 4px; }
  .page-banner h1 { font-size: 24px; }
  .banner-tags span { font-size: 13px; padding: 7px 14px; }
  .roadmap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-actions { flex-direction: column; width: 100%; }
  .cta-actions .btn { width: 100%; justify-content: center; }
  .split-actions { flex-direction: column; }
  .split-actions .btn { width: 100%; justify-content: center; }
  .rank-item { flex-wrap: wrap; }
  .rank-link { display: none; }
  .rank-info h3 { font-size: 15px; }
  .btn { padding: 13px 24px; font-size: 14px; }
  .section-head h2 { font-size: 23px; }
  .cta-content h2 { font-size: 24px; }
}

/* roulang page: category2 */
/* ===== Design Tokens ===== */
:root {
  --primary: #e9b64b;
  --primary-dark: #d49d2f;
  --accent: #6c6cf0;
  --bg-dark: #0d1025;
  --bg-deep: #080b1a;
  --bg-light: #f5f6fa;
  --text-dark: #1d2233;
  --text-body: #3d4356;
  --text-weak: #8a92a6;
  --border: #e3e6ef;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 10px 30px rgba(13, 16, 37, 0.08);
  --shadow-hover: 0 18px 44px rgba(13, 16, 37, 0.14);
  --container: 1200px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-body);
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 14px;
  line-height: 1.25;
  color: var(--text-dark);
  font-weight: 800;
}
p {
  margin: 0 0 14px;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
ul, ol {
  padding: 0;
  margin: 0;
  list-style: none;
}
input, button, textarea, select {
  font-family: inherit;
}
button {
  cursor: pointer;
}
::selection {
  background: rgba(233, 182, 75, 0.3);
  color: var(--bg-dark);
}
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(233, 182, 75, 0.5);
  outline-offset: 3px;
}

/* ===== Container ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ===== Typography Helpers ===== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-label::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.2;
}
.section-desc {
  font-size: 16px;
  color: var(--text-weak);
  max-width: 640px;
  margin: 0 auto;
}

/* ===== Section ===== */
.section {
  padding: 96px 0;
}
.section-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 2px solid transparent;
  transition: all 0.3s ease;
  text-decoration: none;
  line-height: 1.4;
}
.btn-primary {
  background: var(--primary);
  color: #0d1025;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #0d1025;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(233, 182, 75, 0.35);
}
.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
}
.btn-ghost:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}
.btn-light {
  background: #fff;
  color: #0d1025;
}
.btn-light:hover {
  background: #eef0f5;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
}

/* ===== Header & Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(13, 16, 37, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  height: 72px;
  position: relative;
}
.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
}
.nav-left {
  justify-content: flex-end;
}
.nav-right {
  justify-content: flex-start;
}
.brand-logo {
  font-size: 21px;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
  letter-spacing: 0.5px;
  white-space: nowrap;
  position: relative;
  z-index: 2;
  transition: color 0.3s ease;
}
.brand-logo span {
  color: var(--primary);
}
.brand-logo:hover {
  color: var(--primary);
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}
.nav-link.active {
  color: var(--primary);
  background: rgba(233, 182, 75, 0.14);
  font-weight: 700;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  transition: background 0.3s ease;
}
.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(13, 16, 37, 0.97);
  padding: 16px 20px 24px;
  flex-direction: column;
  gap: 6px;
  z-index: 99;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.25s ease;
}
.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--primary);
  background: rgba(233, 182, 75, 0.12);
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 150px 0 96px;
  background: linear-gradient(to bottom, rgba(10, 12, 28, 0.88), rgba(13, 16, 37, 0.82)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: #fff;
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(233, 182, 75, 0.14);
  border: 1px solid rgba(233, 182, 75, 0.3);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 7px 18px;
  border-radius: 999px;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.page-hero h1 {
  color: #fff;
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}
.page-hero h1 span {
  color: var(--primary);
}
.page-hero .hero-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 620px;
  margin: 0 auto 32px;
  line-height: 1.75;
}
.hero-search {
  max-width: 560px;
  margin: 0 auto 48px;
  display: flex;
  gap: 0;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 5px;
  backdrop-filter: blur(8px);
}
.hero-search input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 12px 20px;
  color: #fff;
  font-size: 14px;
  border-radius: 999px 0 0 999px;
}
.hero-search input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}
.hero-search input:focus {
  outline: none;
}
.hero-search button {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #0d1025;
  border: none;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  flex-shrink: 0;
}
.hero-search button:hover {
  background: var(--primary-dark);
  transform: scale(1.05);
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.hero-stats div {
  text-align: center;
}
.hero-stats strong {
  display: block;
  font-size: 30px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.hero-stats span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 1px;
}

/* ===== Topic Tabs ===== */
.topic-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: -40px auto 0;
  position: relative;
  z-index: 5;
  max-width: 720px;
  background: #fff;
  border-radius: 999px;
  padding: 8px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
}
.tab-link {
  padding: 10px 22px;
  border-radius: 999px;
  background: transparent;
  color: var(--text-body);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.tab-link:hover {
  color: var(--primary);
  background: rgba(233, 182, 75, 0.1);
}
.tab-link.active {
  background: var(--primary);
  color: #0d1025;
}

/* ===== Guide Cards ===== */
.guide-topics {
  padding-top: 80px;
}
.guide-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  transition: all 0.35s ease;
  height: 100%;
  position: relative;
  overflow: hidden;
}
.guide-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.guide-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(233, 182, 75, 0.35);
}
.guide-card:hover::after {
  transform: scaleX(1);
}
.guide-card .card-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: linear-gradient(135deg, rgba(233, 182, 75, 0.16), rgba(108, 108, 240, 0.12));
  color: var(--primary);
  margin-bottom: 22px;
  transition: all 0.3s ease;
}
.guide-card:hover .card-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #0d1025;
  transform: scale(1.05);
}
.card-tag {
  display: inline-block;
  background: rgba(233, 182, 75, 0.12);
  color: #b4841f;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.guide-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}
.guide-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 18px;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: gap 0.3s ease, color 0.3s ease;
}
.card-link:hover {
  color: var(--primary-dark);
  gap: 10px;
}

/* ===== Rank Section ===== */
.rank-section {
  background: var(--bg-dark);
  color: #fff;
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}
.rank-section::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(233, 182, 75, 0.12), transparent 60%);
  top: -120px;
  right: -120px;
  border-radius: 50%;
}
.rank-section .section-title {
  color: #fff;
}
.rank-section .section-desc {
  color: rgba(255, 255, 255, 0.55);
}
.rank-list {
  max-width: 820px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.rank-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 18px 24px;
  margin-bottom: 12px;
  transition: all 0.3s ease;
}
.rank-item:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(233, 182, 75, 0.25);
  transform: translateX(6px);
}
.rank-num {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(233, 182, 75, 0.12);
  color: var(--primary);
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.rank-item:nth-child(1) .rank-num {
  background: var(--primary);
  color: #0d1025;
}
.rank-item:nth-child(2) .rank-num {
  background: rgba(233, 182, 75, 0.35);
  color: #0d1025;
}
.rank-info {
  flex: 1;
  min-width: 0;
}
.rank-info h3 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 4px;
  font-weight: 700;
}
.rank-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 999px;
}
.rank-heat {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 220px;
  flex-shrink: 0;
}
.heat-bar {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  overflow: hidden;
}
.heat-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 999px;
}
.rank-heat em {
  font-style: normal;
  font-size: 13px;
  color: var(--primary);
  font-weight: 700;
  white-space: nowrap;
}

/* ===== Article Section ===== */
.article-section {
  background: var(--bg-light);
}
.article-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.article-card {
  display: flex;
  gap: 20px;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}
.article-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(233, 182, 75, 0.3);
}
.article-card img {
  width: 200px;
  height: 132px;
  object-fit: cover;
  border-radius: 12px;
  flex-shrink: 0;
}
.article-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-weak);
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.article-meta .tag {
  background: rgba(233, 182, 75, 0.14);
  color: #b4841f;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
}
.article-meta i {
  margin-right: 4px;
}
.article-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-body p {
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Process Section ===== */
.process-section {
  position: relative;
  padding: 96px 0;
  background: linear-gradient(to bottom, rgba(13, 16, 37, 0.92), rgba(13, 16, 37, 0.88)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  color: #fff;
}
.process-section .section-title {
  color: #fff;
}
.process-section .section-desc {
  color: rgba(255, 255, 255, 0.6);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 10px;
}
.step-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 30px 22px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
}
.step-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(233, 182, 75, 0.3);
  transform: translateY(-4px);
}
.step-num {
  display: block;
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 14px;
  line-height: 1;
}
.step-card h3 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-card p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin: 0;
  line-height: 1.7;
}

/* ===== FAQ Section ===== */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 14px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(13, 16, 37, 0.03);
}
.faq-item summary {
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 12px;
  list-style: none;
  transition: color 0.3s ease;
  user-select: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary i {
  color: var(--primary);
  font-size: 18px;
  flex-shrink: 0;
}
.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 13px;
  color: var(--text-weak);
  margin-left: auto;
  transition: transform 0.3s ease;
}
.faq-item[open] summary::after {
  transform: rotate(180deg);
}
.faq-item[open] {
  border-color: rgba(233, 182, 75, 0.5);
  box-shadow: 0 6px 20px rgba(233, 182, 75, 0.08);
}
.faq-answer {
  padding-top: 16px;
  margin-top: 14px;
  border-top: 1px solid var(--border);
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.8;
}
.faq-answer p {
  margin: 0;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 96px 0;
  background: var(--bg-light);
}
.cta-box {
  background: linear-gradient(135deg, #1b2038, #0d1025);
  border-radius: 32px;
  padding: 72px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(13, 16, 37, 0.3);
}
.cta-decor {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.cta-decor-1 {
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(233, 182, 75, 0.18), transparent 65%);
  top: -120px;
  right: -100px;
}
.cta-decor-2 {
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(108, 108, 240, 0.2), transparent 65%);
  bottom: -90px;
  left: -80px;
}
.cta-box .hero-tag {
  position: relative;
  z-index: 1;
}
.cta-box h2 {
  color: #fff;
  font-size: clamp(26px, 3.5vw, 36px);
  margin: 12px 0 12px;
  position: relative;
  z-index: 1;
}
.cta-box p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 16px;
  margin-bottom: 30px;
  position: relative;
  z-index: 1;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255, 255, 255, 0.65);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand {
  display: inline-block;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
  margin-bottom: 14px;
  transition: color 0.3s ease;
}
.footer-brand span {
  color: var(--primary);
}
.footer-brand:hover {
  color: var(--primary);
}
.footer-about {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.5);
  max-width: 300px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 16px;
  font-weight: 700;
}
.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  padding: 5px 0;
  font-size: 14px;
  transition: all 0.25s ease;
}
.footer-col a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-col a i {
  width: 18px;
  margin-right: 4px;
  color: rgba(233, 182, 75, 0.6);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
}
.footer-bottom p {
  margin: 0;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .article-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }
  .header-inner {
    height: 64px;
    justify-content: space-between;
    padding: 0 16px;
  }
  .nav-left,
  .nav-right {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .brand-logo {
    font-size: 16px;
    margin: 0 auto;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    max-width: 180px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
  }
  .mobile-menu {
    top: 64px;
  }
  .page-hero {
    padding: 120px 0 72px;
  }
  .page-hero h1 {
    font-size: 30px;
  }
  .hero-stats {
    gap: 24px;
  }
  .hero-stats strong {
    font-size: 24px;
  }
  .topic-tabs {
    margin: -28px auto 0;
    border-radius: 20px;
    padding: 8px;
  }
  .tab-link {
    padding: 8px 14px;
    font-size: 13px;
  }
  .guide-topics {
    padding-top: 56px;
  }
  .rank-item {
    flex-wrap: wrap;
    gap: 12px;
    padding: 16px;
  }
  .rank-heat {
    width: 100%;
    margin-left: 56px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .step-card {
    padding: 24px 20px;
  }
  .article-card {
    flex-direction: column;
    padding: 12px;
  }
  .article-card img {
    width: 100%;
    height: 180px;
  }
  .faq-item {
    padding: 18px 20px;
  }
  .faq-item summary {
    font-size: 15px;
  }
  .cta-box {
    padding: 48px 24px;
  }
  .cta-buttons .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-brand,
  .footer-about {
    max-width: 100%;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .header-inner {
    padding: 0 12px;
  }
  .brand-logo {
    font-size: 14px;
    max-width: 150px;
  }
  .page-hero h1 {
    font-size: 26px;
  }
  .page-hero .hero-desc {
    font-size: 15px;
  }
  .hero-search {
    flex-direction: column;
    border-radius: 20px;
    padding: 10px;
    gap: 8px;
  }
  .hero-search input {
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.08);
    text-align: center;
    padding: 12px;
  }
  .hero-search button {
    width: 100%;
    height: 44px;
    border-radius: 12px;
  }
  .rank-num {
    width: 38px;
    height: 38px;
    font-size: 17px;
  }
  .rank-info h3 {
    font-size: 15px;
  }
  .rank-heat {
    margin-left: 0;
  }
  .article-card img {
    height: 160px;
  }
  .guide-card {
    padding: 24px;
  }
  .section-head {
    margin-bottom: 40px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* roulang page: category3 */
/* ========== 设计变量 ========== */
:root {
  --primary: #e8542d;
  --primary-dark: #c93e1a;
  --primary-light: #fef0ec;
  --secondary: #223044;
  --accent: #f6b222;
  --bg: #f6f7fb;
  --bg-dark: #141b26;
  --card-bg: #ffffff;
  --text: #1f2633;
  --text-light: #5f6b7d;
  --border: #e5e9f2;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(20, 30, 50, 0.06);
  --shadow-md: 0 8px 30px rgba(20, 30, 50, 0.1);
  --shadow-lg: 0 20px 50px rgba(20, 30, 50, 0.14);
  --nav-h: 78px;
  --section-space: 90px;
}

/* ========== Reset / Base ========== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.25s; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { margin: 0 0 0.5em; font-weight: 700; line-height: 1.3; color: var(--text); }
p { margin: 0 0 1em; }
button { font-family: inherit; }

/* ========== 容器 ========== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Foundation 网格补充 */
.row { max-width: 75rem; }
.row .column, .row .columns { padding: 0 14px; }
.container .row {
  max-width: calc(100% + 28px);
  margin-left: -14px;
  margin-right: -14px;
}

/* ========== 顶部导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.93);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  height: var(--nav-h);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 16px;
}
.nav-left, .nav-right {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-right { justify-content: flex-end; }
.brand-logo {
  flex-shrink: 0;
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  white-space: nowrap;
  letter-spacing: -0.5px;
  transition: opacity 0.25s;
}
.brand-logo:hover { opacity: 0.85; }
.brand-logo span { color: var(--secondary); }
.nav-link {
  display: inline-block;
  padding: 8px 16px;
  color: var(--text);
  font-weight: 500;
  font-size: 15px;
  border-radius: 999px;
  transition: all 0.25s;
}
.nav-link:hover { background: var(--primary-light); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(232,84,45,0.3); }
.nav-toggle {
  display: none;
  background: var(--primary-light);
  border: 1px solid var(--border);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  color: var(--primary);
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background 0.25s, color 0.25s;
}
.nav-toggle:hover { background: var(--primary); color: #fff; }

/* 移动端抽屉 */
.mobile-drawer {
  display: none;
  position: absolute;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  flex-direction: column;
  padding: 10px 24px 18px;
  z-index: 99;
}
.mobile-drawer.open { display: flex; }
.mobile-drawer a {
  padding: 13px 0;
  font-size: 15px;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  transition: color 0.2s, padding-left 0.2s;
}
.mobile-drawer a:last-child { border-bottom: none; }
.mobile-drawer a:hover { color: var(--primary); padding-left: 6px; }
.mobile-drawer a.active { color: var(--primary); font-weight: 700; }

/* ========== 页面横幅 ========== */
.page-banner {
  position: relative;
  background: linear-gradient(135deg, rgba(20,27,38,0.88), rgba(30,40,60,0.72)), url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  padding: 120px 0 90px;
  color: #fff;
  text-align: center;
}
.page-banner h1 {
  color: #fff;
  font-size: 42px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.page-banner .banner-desc {
  color: rgba(255,255,255,0.85);
  font-size: 17px;
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.9;
}
.banner-badge {
  display: inline-block;
  background: var(--accent);
  color: #141b26;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 22px;
  letter-spacing: 1px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.18);
}
.banner-badge i { margin-right: 6px; }
.banner-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.btn-solid {
  display: inline-block;
  padding: 13px 34px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}
.btn-solid:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(232,84,45,0.35); }
.btn-outline-light {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  background: transparent;
  border: 2px solid rgba(255,255,255,0.7);
  color: #fff;
  cursor: pointer;
  transition: all 0.3s;
}
.btn-outline-light:hover { background: rgba(255,255,255,0.15); border-color: #fff; transform: translateY(-2px); }

/* ========== 通用板块 ========== */
.section { padding: var(--section-space) 0; }
.section-dark { background: var(--bg-dark); color: #e8edf4; }
.section-light { background: #fff; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 54px; }
.section-head h2 { font-size: 34px; margin-bottom: 14px; letter-spacing: -0.5px; }
.section-head p { color: var(--text-light); font-size: 16px; margin: 0; line-height: 1.8; }
.section-head .eyebrow {
  display: inline-block;
  letter-spacing: 2px;
  font-size: 12px;
  font-weight: 800;
  color: var(--primary);
  background: var(--primary-light);
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.section-dark .section-head .eyebrow {
  background: rgba(232,84,45,0.22);
  color: #ff977a;
}
.section-dark .section-head h2 { color: #fff; }
.section-dark .section-head p { color: rgba(255,255,255,0.7); }

/* ========== 特性卡片 ========== */
.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  height: 100%;
  transition: transform 0.3s, box-shadow 0.3s;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.feature-card .icon-wrap {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
  transition: background 0.3s, color 0.3s;
}
.feature-card:hover .icon-wrap { background: var(--primary); color: #fff; }
.feature-card h3 { font-size: 18px; margin-bottom: 8px; }
.feature-card p { color: var(--text-light); font-size: 14px; margin: 0; line-height: 1.75; }

/* ========== 权益图片卡 ========== */
.benefit-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  height: 100%;
  transition: transform 0.3s, box-shadow 0.3s;
}
.benefit-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.benefit-img {
  height: 190px;
  overflow: hidden;
  background: var(--primary-light);
}
.benefit-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.benefit-card:hover .benefit-img img { transform: scale(1.06); }
.benefit-body { padding: 26px 24px 28px; }
.benefit-body .tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.benefit-body h3 { font-size: 19px; margin-bottom: 8px; }
.benefit-body p { color: var(--text-light); font-size: 14px; margin: 0; line-height: 1.7; }

/* ========== 会员等级 ========== */
.tier-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 38px 26px 32px;
  text-align: center;
  border: 1px solid var(--border);
  position: relative;
  height: 100%;
  transition: transform 0.3s, box-shadow 0.3s;
}
.tier-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.tier-card.tier-highlight {
  background: linear-gradient(150deg, #223044, #2d3e58);
  color: #fff;
  border: none;
  box-shadow: var(--shadow-lg);
}
.tier-card.tier-highlight h3,
.tier-card.tier-highlight .tier-point { color: #fff; }
.tier-card.tier-highlight .tier-icon { background: rgba(255,255,255,0.15); color: var(--accent); }
.tier-card.tier-highlight .tier-list li { color: rgba(255,255,255,0.8); }
.tier-card.tier-highlight .tier-list li i { color: var(--accent); }
.tier-card.tier-highlight .tier-tag {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #141b26;
  font-size: 11px;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 1px;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(0,0,0,0.18);
}
.tier-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  transition: background 0.3s, color 0.3s;
}
.tier-card:not(.tier-highlight):hover .tier-icon { background: var(--primary); color: #fff; }
.tier-card h3 { font-size: 20px; margin-bottom: 4px; }
.tier-point { color: var(--text-light); font-size: 13px; margin-bottom: 18px; }
.tier-list { text-align: left; margin-bottom: 22px; }
.tier-list li {
  padding: 6px 0;
  font-size: 14px;
  color: var(--text-light);
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.tier-list li i { color: var(--primary); margin-top: 4px; font-size: 12px; }
.tier-card .btn-mini {
  display: inline-block;
  padding: 9px 26px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--primary);
  color: var(--primary);
  transition: all 0.3s;
}
.tier-card .btn-mini:hover { background: var(--primary); color: #fff; }
.tier-card.tier-highlight .btn-mini { border-color: var(--accent); color: var(--accent); }
.tier-card.tier-highlight .btn-mini:hover { background: var(--accent); color: #141b26; }

/* ========== 服务流程 ========== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.step-item {
  text-align: center;
  padding: 30px 22px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s, box-shadow 0.3s;
}
.step-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.step-num {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 8px 20px rgba(232,84,45,0.3);
}
.step-item h3 { font-size: 17px; margin-bottom: 8px; }
.step-item p { color: var(--text-light); font-size: 14px; margin: 0; line-height: 1.7; }

/* ========== FAQ ========== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  padding: 22px 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s, border-color 0.3s;
}
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-item[open] { border-color: rgba(232,84,45,0.3); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  color: var(--text);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--primary);
  transition: transform 0.3s;
  margin-left: 14px;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-answer {
  margin-top: 14px;
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.85;
  border-top: 1px dashed var(--border);
  padding-top: 14px;
}

/* ========== CTA ========== */
.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 70px 50px;
  text-align: center;
  border-radius: 30px;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255,255,255,0.09);
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -50px;
  left: -50px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
}
.cta-section h2 { color: #fff; font-size: 32px; margin-bottom: 12px; position: relative; z-index: 1; }
.cta-section p { color: rgba(255,255,255,0.85); font-size: 16px; margin-bottom: 30px; position: relative; z-index: 1; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; position: relative; z-index: 1; }
.btn-primary {
  display: inline-block;
  padding: 13px 34px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  background: #fff;
  color: var(--primary);
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}
.btn-primary:hover { background: var(--accent); color: #141b26; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,0.22); }
.btn-outline {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  background: transparent;
  border: 2px solid rgba(255,255,255,0.75);
  color: #fff;
  cursor: pointer;
  transition: all 0.3s;
}
.btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; transform: translateY(-2px); }

/* ========== 页脚 ========== */
.site-footer {
  background: #141b26;
  color: #8896ab;
  padding: 64px 0 0;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.footer-brand {
  font-size: 23px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
}
.footer-brand:hover { opacity: 0.85; }
.footer-brand span { color: var(--primary); }
.footer-about { font-size: 14px; line-height: 1.85; margin-top: 14px; color: #8896ab; max-width: 300px; }
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 18px;
  letter-spacing: 1px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.footer-col a {
  display: block;
  color: #8896ab;
  font-size: 14px;
  padding: 6px 0;
  transition: color 0.25s, transform 0.25s;
}
.footer-col a:hover { color: #fff; transform: translateX(4px); }
.footer-col a i { width: 20px; color: var(--primary); margin-right: 4px; }
.footer-bottom {
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: #59677d;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-bottom p { margin: 0; }

/* ========== Focus 可访问性 ========== */
a:focus, button:focus, summary:focus {
  outline: 3px solid rgba(232,84,45,0.35);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ========== 响应式断点 ========== */
@media screen and (max-width: 1024px) {
  .steps { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .footer-grid { gap: 32px; }
  .tier-card.tier-highlight { transform: none; }
}

@media screen and (max-width: 768px) {
  :root {
    --nav-h: 64px;
    --section-space: 60px;
  }
  .container { padding: 0 20px; }
  .container .row { max-width: calc(100% + 28px); }
  .site-header { height: var(--nav-h); }
  .header-inner { height: var(--nav-h); justify-content: center; }
  .nav-left, .nav-right { display: none; }
  .nav-toggle {
    display: flex;
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
  }
  .brand-logo { font-size: 18px; }
  .page-banner { padding: 84px 0 66px; }
  .page-banner h1 { font-size: 30px; }
  .page-banner .banner-desc { font-size: 15px; }
  .section-head h2 { font-size: 27px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cta-section { padding: 54px 28px; border-radius: 24px; }
  .cta-section h2 { font-size: 26px; }
  .faq-item { padding: 18px 20px; }
}

@media screen and (max-width: 520px) {
  .container { padding: 0 16px; }
  .container .row { max-width: calc(100% + 28px); }
  .page-banner { padding: 68px 0 54px; }
  .page-banner h1 { font-size: 24px; }
  .banner-actions { gap: 12px; }
  .btn-solid, .btn-outline-light { width: 100%; max-width: 260px; text-align: center; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .tier-card.tier-highlight { transform: none; }
  .section-head h2 { font-size: 24px; }
  .cta-actions .btn-primary, .cta-actions .btn-outline { width: 100%; max-width: 260px; text-align: center; }
}