/* roulang page: index */
:root{
  --color-bg:#0b0f14;
  --color-bg-soft:#111720;
  --color-card:#151d28;
  --color-card-alt:#182230;
  --color-border:#223040;
  --color-text:#e6edf3;
  --color-text-muted:#93a4b5;
  --color-primary:#00e083;
  --color-primary-strong:#00c96f;
  --color-secondary:#23b5ff;
  --color-accent:#ffc24b;
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:20px;
  --shadow-sm:0 4px 12px rgba(0,0,0,.25);
  --shadow-md:0 8px 30px rgba(0,0,0,.35);
  --shadow-primary:0 0 24px rgba(0,224,131,.25);
  --font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --header-height:72px;
  --section-space:96px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-family);background:var(--color-bg);color:var(--color-text);line-height:1.7;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input{font-family:inherit;font-size:inherit;}
ul,ol{list-style:none;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
section[id]{scroll-margin-top:calc(var(--header-height) + 16px);}

.site-header{position:sticky;top:0;z-index:100;height:var(--header-height);background:rgba(11,15,20,.85);backdrop-filter:blur(14px);border-bottom:1px solid rgba(34,48,64,.8);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%;gap:24px;}
.brand{font-size:1.45rem;font-weight:800;letter-spacing:.5px;white-space:nowrap;}
.brand .brand-highlight{color:var(--color-primary);}
.main-nav{display:flex;align-items:center;gap:8px;}
.nav-list{display:flex;align-items:center;gap:8px;}
.nav-item{display:inline-flex;align-items:center;padding:8px 18px;border-radius:999px;border:1px solid transparent;color:var(--color-text-muted);font-weight:500;font-size:.95rem;transition:all .2s;}
.nav-item:hover{color:var(--color-text);background:rgba(0,224,131,.08);border-color:rgba(0,224,131,.25);}
.nav-item.active{background:linear-gradient(135deg,rgba(0,224,131,.18),rgba(35,181,255,.14));color:var(--color-text);border-color:rgba(0,224,131,.45);box-shadow:0 0 18px rgba(0,224,131,.15);}
.header-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;background:var(--color-card);border:1px solid var(--color-border);color:var(--color-text);align-items:center;justify-content:center;cursor:pointer;font-size:1.1rem;transition:all .2s;}
.nav-toggle:hover{border-color:var(--color-primary);color:var(--color-primary);}
.header-btn{padding:8px 20px;border-radius:999px;background:linear-gradient(135deg,var(--color-primary),#00b4ff);color:#04100a;font-weight:700;font-size:.95rem;box-shadow:var(--shadow-primary);transition:all .2s;white-space:nowrap;}
.header-btn:hover{transform:translateY(-2px);box-shadow:0 8px 26px rgba(0,224,131,.35);}

.hero{position:relative;min-height:720px;display:flex;align-items:center;background-image:url("/assets/images/backpic/back-1.png");background-size:cover;background-position:center;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,15,20,.75) 0%,rgba(11,15,20,.45) 45%,rgba(11,15,20,.95) 100%);}
.hero-inner{position:relative;z-index:2;max-width:860px;padding:80px 0;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;background:rgba(0,224,131,.12);border:1px solid rgba(0,224,131,.35);color:var(--color-primary);font-size:.85rem;font-weight:600;margin-bottom:24px;}
.hero h1{font-size:3.2rem;line-height:1.2;font-weight:800;letter-spacing:-1px;margin-bottom:20px;background:linear-gradient(90deg,#ffffff,#b7c8d8);-webkit-background-clip:text;-webkit-text-fill-color:transparent;}
.hero p{font-size:1.1rem;color:var(--color-text-muted);max-width:600px;margin-bottom:32px;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:12px;font-weight:600;border:1px solid transparent;transition:all .2s;cursor:pointer;font-size:1rem;}
.btn-primary{background:linear-gradient(135deg,var(--color-primary),#00c4ff);color:#04100b;box-shadow:var(--shadow-primary);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(0,224,131,.35);}
.btn-outline{background:transparent;border:1px solid rgba(255,255,255,.25);color:var(--color-text);}
.btn-outline:hover{border-color:var(--color-primary);color:var(--color-primary);background:rgba(0,224,131,.08);transform:translateY(-2px);}
.hero-stats{display:flex;gap:40px;margin-top:56px;flex-wrap:wrap;}
.stat-item{border-left:2px solid rgba(0,224,131,.5);padding-left:16px;}
.stat-number{font-size:1.9rem;font-weight:800;color:var(--color-text);line-height:1.3;}
.stat-label{font-size:.9rem;color:var(--color-text-muted);}

.section{padding:var(--section-space) 0;}
.section-header{max-width:720px;margin-bottom:48px;}
.section-tag{display:inline-block;font-size:.8rem;color:var(--color-primary);letter-spacing:2px;margin-bottom:12px;font-weight:700;}
.section-title{font-size:2.1rem;line-height:1.3;font-weight:800;margin-bottom:14px;}
.section-desc{color:var(--color-text-muted);font-size:1rem;}

.about-section{background:linear-gradient(180deg,var(--color-bg) 0%,var(--color-bg-soft) 100%);}
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;}
.about-text p{color:var(--color-text-muted);font-size:1rem;}
.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;}
.feature-item{display:flex;gap:14px;align-items:flex-start;padding:16px;background:var(--color-card);border-radius:var(--radius-md);border:1px solid var(--color-border);transition:border-color .2s;}
.feature-item:hover{border-color:rgba(0,224,131,.4);}
.feature-icon{width:46px;height:46px;border-radius:12px;background:rgba(0,224,131,.15);color:var(--color-primary);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1.1rem;}
.feature-title{font-weight:700;margin-bottom:6px;}
.feature-desc{font-size:.9rem;color:var(--color-text-muted);}
.about-images{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.img-frame{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--color-border);box-shadow:var(--shadow-md);}
.img-frame img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.img-frame:hover img{transform:scale(1.03);}

.categories-section{background:linear-gradient(180deg,var(--color-bg),var(--color-bg-soft));}
.categories-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.category-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--color-border);background:var(--color-card);transition:transform .25s,box-shadow .25s,border-color .25s;}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-md);border-color:rgba(0,224,131,.4);}
.category-card img{width:100%;height:220px;object-fit:cover;}
.category-body{padding:24px;}
.badge{display:inline-block;padding:4px 14px;border-radius:999px;background:rgba(0,0,0,.45);backdrop-filter:blur(6px);color:#fff;font-size:.75rem;letter-spacing:.5px;}
.category-card .badge{position:absolute;top:16px;left:16px;z-index:1;background:linear-gradient(135deg,rgba(0,224,131,.8),rgba(35,181,255,.8));color:#04100a;font-weight:700;}
.category-card h3{font-size:1.25rem;font-weight:700;margin-bottom:10px;}
.category-card p{font-size:.95rem;color:var(--color-text-muted);margin-bottom:18px;}
.category-link{font-weight:600;color:var(--color-primary);transition:gap .2s;}
.category-link i{margin-left:6px;transition:transform .2s;}
.category-link:hover i{transform:translateX(4px);}

.latest-section{background:var(--color-bg-soft);border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);}
.latest-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:start;}
.news-list{display:grid;gap:16px;}
.news-item{display:flex;gap:16px;align-items:flex-start;background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:20px;transition:all .25s;}
.news-item:hover{border-color:var(--color-primary);box-shadow:var(--shadow-sm);transform:translateX(4px);}
.news-icon{width:44px;height:44px;flex-shrink:0;border-radius:12px;background:rgba(35,181,255,.12);color:var(--color-secondary);display:flex;align-items:center;justify-content:center;font-size:1.1rem;}
.news-content{flex:1;}
.news-meta{display:flex;align-items:center;gap:12px;font-size:.8rem;color:var(--color-text-muted);margin-bottom:8px;flex-wrap:wrap;}
.news-meta .badge{background:rgba(0,224,131,.18);color:var(--color-primary);}
.news-title{font-size:1.08rem;font-weight:700;margin-bottom:6px;}
.news-title a{transition:color .2s;}
.news-title a:hover{color:var(--color-primary);}
.news-summary{font-size:.92rem;color:var(--color-text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:0;}
.side-card{background:var(--color-card);border-radius:var(--radius-lg);border:1px solid var(--color-border);padding:24px;margin-top:0;}
.side-card-title{font-size:1rem;font-weight:700;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--color-border);display:flex;align-items:center;gap:8px;}
.side-card-title i{color:var(--color-primary);}
.side-card-title:not(:first-child){margin-top:24px;}
.search-form{display:flex;gap:10px;}
.search-form input{flex:1;padding:10px 16px;border-radius:12px;border:1px solid var(--color-border);background:var(--color-bg);color:var(--color-text);outline:none;transition:border-color .2s,box-shadow .2s;}
.search-form input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(0,224,131,.12);}
.search-form .btn{padding:10px 20px;}
.side-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{padding:6px 14px;border-radius:999px;background:var(--color-bg);border:1px solid var(--color-border);color:var(--color-text-muted);font-size:.8rem;transition:all .2s;}
.tag:hover{color:var(--color-primary);border-color:var(--color-primary);background:rgba(0,224,131,.08);}
.trend-list{margin-top:0;}
.trend-item{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px dashed var(--color-border);font-size:.9rem;color:var(--color-text-muted);}
.trend-item:last-child{border-bottom:0;}
.trend-index{font-weight:800;margin-right:12px;color:var(--color-primary);}
.trend-item .badge{background:rgba(255,194,75,.15);color:var(--color-accent);}
.empty-tip{padding:40px;text-align:center;color:var(--color-text-muted);background:var(--color-card);border-radius:var(--radius-md);border:1px dashed var(--color-border);}

.steps-section{background:linear-gradient(180deg,var(--color-bg),rgba(0,224,131,.03));}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.step-card{position:relative;padding:28px;background:var(--color-card);border-radius:var(--radius-lg);border:1px solid var(--color-border);overflow:hidden;transition:border-color .2s,transform .2s;}
.step-card:hover{border-color:rgba(0,224,131,.4);transform:translateY(-4px);}
.step-num{font-size:3rem;font-weight:800;color:rgba(0,224,131,.12);line-height:1;margin-bottom:16px;}
.step-card h3{font-size:1.15rem;margin-bottom:10px;}
.step-card p{color:var(--color-text-muted);font-size:.95rem;}
.step-card::after{content:"";position:absolute;right:-20px;top:-20px;width:80px;height:80px;background:radial-gradient(circle,rgba(0,224,131,.08),transparent 70%);}

.faq-section{}
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:14px;}
.faq-item{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden;transition:border-color .2s;}
.faq-item.open{border-color:rgba(0,224,131,.4);}
.faq-question{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;cursor:pointer;font-weight:600;}
.faq-question i{color:var(--color-primary);transition:transform .3s;}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-answer-inner{padding:0 24px 20px;color:var(--color-text-muted);font-size:.95rem;}
.faq-item.open .faq-answer{max-height:320px;}
.faq-item.open .faq-question i{transform:rotate(45deg);}

.cta-section{background-image:url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center;background-attachment:fixed;position:relative;}
.cta-section::before{content:"";position:absolute;inset:0;background:rgba(11,15,20,.82);}
.cta-box{position:relative;z-index:1;text-align:center;max-width:680px;margin:0 auto;padding:80px 24px;}
.cta-title{font-size:2.2rem;font-weight:800;margin-bottom:14px;}
.cta-desc{color:var(--color-text-muted);margin-bottom:28px;}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;}

.site-footer{padding:64px 0 32px;background:#080c12;border-top:1px solid var(--color-border);}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:48px;}
.footer-desc{margin-top:12px;color:var(--color-text-muted);font-size:.9rem;max-width:360px;}
.footer-col h4{font-size:.95rem;margin-bottom:14px;color:var(--color-text);}
.footer-col a{display:block;padding:6px 0;color:var(--color-text-muted);font-size:.9rem;transition:color .2s;}
.footer-col a:hover{color:var(--color-primary);}
.footer-bottom{border-top:1px solid rgba(34,48,64,.6);padding-top:24px;display:flex;justify-content:space-between;gap:16px;color:var(--color-text-muted);font-size:.85rem;flex-wrap:wrap;}

@media (max-width:1024px){
  .about-grid{grid-template-columns:1fr;gap:32px;}
  .categories-grid{gap:20px;}
  .latest-layout{grid-template-columns:1fr;}
  .steps-grid{gap:20px;}
  .footer-grid{gap:28px;}
}
@media (max-width:768px){
  .section{padding:64px 0;}
  .hero{min-height:600px;}
  .hero h1{font-size:2.3rem;}
  .hero-stats{gap:24px;}
  .categories-grid{grid-template-columns:1fr 1fr;}
  .steps-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .main-nav{position:fixed;top:var(--header-height);left:0;right:0;background:rgba(11,15,20,.98);flex-direction:column;align-items:stretch;padding:16px 24px 24px;border-bottom:1px solid var(--color-border);display:none;box-shadow:var(--shadow-md);}
  .main-nav.open{display:flex;}
  .nav-list{flex-direction:column;align-items:stretch;gap:4px;}
  .nav-item{justify-content:center;padding:12px 16px;}
  .nav-toggle{display:inline-flex;}
  .header-btn{display:none;}
  .cta-section{background-attachment:scroll;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .categories-grid{grid-template-columns:1fr;}
  .hero h1{font-size:1.9rem;}
  .hero p{font-size:1rem;}
  .hero-stats{gap:14px;}
  .stat-number{font-size:1.5rem;}
  .hero-actions .btn{width:100%;}
  .feature-list{grid-template-columns:1fr;}
  .news-item{flex-direction:column;}
  .search-form{flex-direction:column;}
  .cta-title{font-size:1.7rem;}
}

/* roulang page: category1 */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #e0e7ff;
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --bg: #f8fafc;
  --bg-alt: #0f172a;
  --surface: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --text-white: #f1f5f9;
  --border: #e2e8f0;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 2px 8px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.07), 0 8px 24px rgba(0,0,0,.05);
  --shadow-lg: 0 12px 40px rgba(79,70,229,.12), 0 6px 16px rgba(0,0,0,.06);
  --spacing-section: 76px;
  --spacing-section-sm: 52px;
  --max-w: 1200px;
  --font: 'Noto Sans SC', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --ease: cubic-bezier(.4,0,.2,1);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; height: auto; }
a { color: var(--primary); text-decoration: none; transition: color .25s var(--ease); }
a:hover { color: var(--primary-dark); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; line-height: 1.3; font-weight: 700; color: var(--text); }
p { margin: 0; }
button { font-family: var(--font); cursor: pointer; }
input { font-family: var(--font); }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 28px; }
.section { padding: var(--spacing-section) 0; }
.section-sm { padding: var(--spacing-section-sm) 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 40px; flex-wrap: wrap; }
.section-title { font-size: clamp(1.65rem, 3vw, 2.35rem); font-weight: 900; letter-spacing: -.5px; position: relative; padding-left: 18px; }
.section-title::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 5px; border-radius: 4px; background: linear-gradient(180deg, var(--primary), var(--accent)); }
.section-sub { color: var(--text-light); margin-top: 8px; font-size: 15px; max-width: 720px; }

.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92); backdrop-filter: blur(18px); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.brand { font-size: 24px; font-weight: 900; color: var(--text); letter-spacing: .5px; white-space: nowrap; }
.brand-highlight { color: var(--primary); }
.brand:hover { color: var(--text); }
.main-nav { flex: 1; display: flex; justify-content: center; }
.nav-list { display: flex; gap: 6px; background: var(--bg); padding: 5px; border-radius: 999px; border: 1px solid var(--border); }
.nav-item { display: block; padding: 8px 22px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--text-light); transition: all .3s var(--ease); }
.nav-item:hover { color: var(--primary); background: var(--primary-light); }
.nav-item.active { color: #fff; background: var(--primary); box-shadow: 0 2px 8px rgba(99,102,241,.35); }
.header-cta { display: flex; align-items: center; gap: 16px; }
.header-btn { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; padding: 9px 22px; border-radius: 999px; font-size: 14px; font-weight: 600; box-shadow: 0 4px 12px rgba(79,70,229,.28); transition: all .3s var(--ease); }
.header-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(79,70,229,.38); color: #fff; }
.nav-toggle { display: none; background: none; border: none; font-size: 22px; color: var(--text); padding: 8px; border-radius: var(--radius-sm); transition: background .2s; }
.nav-toggle:hover { background: var(--bg); }

.news-banner { position: relative; padding: 72px 0 64px; background: var(--bg-alt); color: var(--text-white); overflow: hidden; }
.news-banner::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: .28; }
.news-banner::after { content: ''; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(15,23,42,.92) 0%, rgba(15,23,42,.62) 55%, rgba(99,102,241,.35) 100%); }
.banner-inner { position: relative; z-index: 2; max-width: 760px; }
.banner-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(99,102,241,.25); color: #c7d2fe; border: 1px solid rgba(99,102,241,.4); font-size: 13px; font-weight: 500; padding: 6px 16px; border-radius: 999px; margin-bottom: 20px; }
.banner-tag i { font-size: 12px; }
.news-banner h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 900; color: #fff; letter-spacing: -1px; margin-bottom: 16px; }
.news-banner p { color: rgba(241,245,249,.88); font-size: 17px; line-height: 1.8; margin-bottom: 28px; }
.banner-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; border-radius: 999px; font-size: 15px; font-weight: 600; border: none; transition: all .3s var(--ease); text-decoration: none; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff !important; box-shadow: 0 4px 16px rgba(99,102,241,.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 26px rgba(99,102,241,.45); }
.btn-outline { background: transparent; color: #fff !important; border: 1.5px solid rgba(255,255,255,.5); backdrop-filter: blur(4px); }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,.08); transform: translateY(-2px); }

.filter-bar { margin-top: -28px; position: relative; z-index: 10; }
.filter-card { background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: 18px 24px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; border: 1px solid rgba(226,232,240,.7); }
.filter-label { font-size: 13px; font-weight: 600; color: var(--text-light); display: flex; align-items: center; gap: 6px; margin-right: 8px; }
.filter-chip { display: inline-flex; align-items: center; gap: 6px; padding: 7px 18px; border-radius: 999px; background: var(--bg); border: 1px solid var(--border); font-size: 13px; font-weight: 500; color: var(--text-light); transition: all .3s var(--ease); cursor: pointer; }
.filter-chip:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.filter-chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.filter-search { margin-left: auto; display: flex; align-items: center; background: var(--bg); border: 1px solid var(--border); border-radius: 999px; padding: 5px 8px 5px 18px; gap: 6px; transition: border-color .25s; }
.filter-search:focus-within { border-color: var(--primary); }
.filter-search input { border: none; background: transparent; padding: 7px 0; font-size: 14px; width: 180px; outline: none; color: var(--text); }
.filter-search button { background: var(--primary); color: #fff; border: none; width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 13px; transition: background .25s; }
.filter-search button:hover { background: var(--primary-dark); }

.featured-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; margin-bottom: 56px; }
.featured-main { grid-column: span 7; border-radius: var(--radius-lg); overflow: hidden; background: var(--surface); box-shadow: var(--shadow-md); position: relative; min-height: 360px; transition: transform .4s var(--ease), box-shadow .4s var(--ease); }
.featured-main:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.featured-main img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.featured-main .gradient-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, rgba(15,23,42,.92) 100%); }
.featured-content { position: relative; z-index: 2; padding: 36px 32px; display: flex; flex-direction: column; justify-content: flex-end; min-height: 360px; }
.featured-tag { align-self: flex-start; background: var(--accent); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 14px; border-radius: 999px; margin-bottom: 14px; letter-spacing: .5px; }
.featured-content h3 { color: #fff; font-size: 22px; font-weight: 700; margin-bottom: 10px; line-height: 1.4; }
.featured-content p { color: rgba(241,245,249,.82); font-size: 14px; max-width: 520px; margin-bottom: 14px; }
.featured-meta { display: flex; align-items: center; gap: 16px; color: rgba(241,245,249,.65); font-size: 13px; }
.featured-meta i { margin-right: 4px; }
.featured-side { grid-column: span 5; display: flex; flex-direction: column; gap: 18px; }
.side-card { flex: 1; background: var(--surface); border-radius: var(--radius-md); padding: 20px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); display: flex; flex-direction: column; transition: all .3s var(--ease); }
.side-card:hover { box-shadow: var(--shadow-md); border-color: var(--primary-light); transform: translateX(4px); }
.side-card .side-label { font-size: 12px; color: var(--primary); font-weight: 700; margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.side-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.side-card p { font-size: 13px; color: var(--text-light); margin-bottom: 10px; line-height: 1.6; flex: 1; }
.side-card .side-foot { font-size: 12px; color: var(--text-light); display: flex; justify-content: space-between; align-items: center; }

.section-mix { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: var(--surface); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border); display: flex; flex-direction: column; transition: all .35s var(--ease); }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.news-card .thumb { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.news-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.news-card:hover .thumb img { transform: scale(1.06); }
.thumb-badge { position: absolute; top: 12px; left: 12px; background: rgba(15,23,42,.8); backdrop-filter: blur(6px); color: #fff; font-size: 12px; padding: 4px 14px; border-radius: 999px; font-weight: 600; }
.thumb-badge.hot { background: linear-gradient(135deg, #ef4444, #f97316); }
.thumb-badge.new { background: linear-gradient(135deg, var(--primary), var(--accent)); }
.news-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.news-body .news-meta { font-size: 12px; color: var(--text-light); margin-bottom: 8px; display: flex; align-items: center; gap: 12px; }
.news-body h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 8px; }
.news-body h3 a { color: var(--text); }
.news-body h3 a:hover { color: var(--primary); }
.news-body .desc { font-size: 14px; color: var(--text-light); line-height: 1.65; margin-bottom: 12px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-body .read-more { font-size: 13px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 4px; }
.news-body .read-more i { font-size: 12px; transition: transform .25s; }
.news-body .read-more:hover i { transform: translateX(4px); }

.gradient-band { background: var(--bg-alt); position: relative; overflow: hidden; }
.gradient-band::before { content: ''; position: absolute; width: 600px; height: 600px; border-radius: 50%; background: radial-gradient(circle, rgba(99,102,241,.32), transparent 70%); top: -200px; right: -100px; }
.gradient-band::after { content: ''; position: absolute; width: 400px; height: 400px; border-radius: 50%; background: radial-gradient(circle, rgba(245,158,11,.22), transparent 70%); bottom: -160px; left: -100px; }
.gradient-band .container { position: relative; z-index: 2; }
.timeline { display: flex; flex-direction: column; gap: 0; max-width: 860px; margin: 0 auto; padding: 20px 0; }
.timeline-item { display: flex; gap: 24px; position: relative; padding-bottom: 44px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before { content: ''; position: absolute; left: 22px; top: 52px; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--primary), rgba(99,102,241,.15)); }
.timeline-item:last-child::before { display: none; }
.timeline-dot { position: relative; z-index: 2; flex-shrink: 0; width: 46px; height: 46px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 17px; box-shadow: 0 0 0 6px rgba(99,102,241,.18), 0 4px 14px rgba(79,70,229,.3); }
.timeline-content { flex: 1; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius-md); padding: 18px 22px; backdrop-filter: blur(8px); transition: all .35s var(--ease); }
.timeline-content:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.22); transform: translateY(-2px); }
.timeline-date { font-size: 12px; color: var(--accent); font-weight: 600; margin-bottom: 4px; display: flex; align-items: center; gap: 6px; }
.timeline-content h4 { color: #fff; font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.timeline-content p { color: rgba(241,245,249,.78); font-size: 14px; line-height: 1.65; }

.stats-band { background: linear-gradient(135deg, var(--primary-dark), #312e81); color: #fff; padding: 42px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; text-align: center; }
.stat-item .stat-icon { font-size: 26px; margin-bottom: 8px; opacity: .9; }
.stat-item .stat-number { font-size: 38px; font-weight: 900; line-height: 1.2; letter-spacing: -1px; }
.stat-item .stat-label { font-size: 14px; opacity: .82; margin-top: 4px; }

.quick-links { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.quick-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.quick-card { background: var(--bg); border-radius: var(--radius-md); padding: 24px 20px; text-align: center; transition: all .35s var(--ease); border: 1px solid transparent; }
.quick-card:hover { background: var(--primary-light); border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.quick-card i { font-size: 28px; color: var(--primary); margin-bottom: 12px; }
.quick-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.quick-card p { font-size: 13px; color: var(--text-light); line-height: 1.5; }

.faq-section { background: var(--bg); }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 960px; margin: 0 auto; }
.faq-item { background: var(--surface); border-radius: var(--radius-md); padding: 24px; border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: all .3s var(--ease); }
.faq-item:hover { box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.faq-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.faq-item h4 i { color: var(--primary); font-size: 15px; flex-shrink: 0; }
.faq-item p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

.cta-section { background: var(--bg-alt); position: relative; overflow: hidden; padding: 70px 0; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: .15; }
.cta-section::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,42,.88), rgba(49,46,129,.78)); }
.cta-wrap { position: relative; z-index: 2; text-align: center; max-width: 780px; margin: 0 auto; color: #fff; }
.cta-wrap h2 { color: #fff; font-size: clamp(1.7rem, 3.5vw, 2.5rem); font-weight: 900; margin-bottom: 14px; }
.cta-wrap p { color: rgba(241,245,249,.82); font-size: 16px; margin-bottom: 30px; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

.site-footer { background: #0f172a; color: #94a3b8; padding: 60px 0 24px; border-top: 3px solid var(--primary); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 44px; margin-bottom: 44px; }
.footer-brand .brand { color: #fff; font-size: 22px; }
.footer-brand .brand-highlight { color: var(--primary); }
.footer-desc { font-size: 14px; line-height: 1.7; margin-top: 14px; color: #94a3b8; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 16px; letter-spacing: .5px; }
.footer-col a { display: block; color: #94a3b8; font-size: 14px; padding: 5px 0; transition: all .25s var(--ease); }
.footer-col a:hover { color: #fff; padding-left: 6px; }
.footer-bottom { border-top: 1px solid rgba(148,163,184,.15); padding-top: 22px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: #64748b; }

@media (max-width: 1024px) {
  .featured-grid { grid-template-columns: 1fr; }
  .featured-main { min-height: 320px; }
  .featured-content { min-height: 320px; }
  .featured-side { flex-direction: row; }
  .side-card { flex: 1; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stats-band { padding: 36px 0; }
}

@media (max-width: 768px) {
  :root { --spacing-section: 48px; --spacing-section-sm: 34px; }
  .header-inner { height: 64px; }
  .main-nav { position: fixed; top: 64px; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); padding: 12px 20px 20px; transform: translateY(-120%); opacity: 0; pointer-events: none; transition: all .4s var(--ease); z-index: 99; }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-list { flex-direction: column; background: transparent; border: none; padding: 0; gap: 4px; }
  .nav-item { border-radius: var(--radius-sm); padding: 10px 16px; font-size: 15px; }
  .header-btn { display: none; }
  .nav-toggle { display: block; }
  .banner-inner { text-align: center; margin: 0 auto; }
  .news-banner p { margin-left: auto; margin-right: auto; }
  .banner-actions { justify-content: center; }
  .filter-card { flex-direction: column; align-items: flex-start; }
  .filter-search { margin-left: 0; width: 100%; }
  .filter-search input { flex: 1; }
  .news-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .featured-side { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .quick-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .timeline-item { gap: 16px; }
  .timeline-item::before { left: 18px; }
  .timeline-dot { width: 38px; height: 38px; font-size: 14px; }
  .timeline-content { padding: 16px; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .section-title { padding-left: 14px; font-size: 1.4rem; }
  .news-banner { padding: 52px 0 48px; }
  .news-banner h1 { font-size: 1.8rem; }
  .btn { padding: 11px 22px; font-size: 14px; }
  .quick-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 18px; }
  .stat-item .stat-number { font-size: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: article */
:root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --primary-light: #818cf8;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --success: #10b981;
            --bg-dark: #0b0f1a;
            --bg-dark2: #111827;
            --bg-card: #1e293b;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-light: #f1f5f9;
            --text-body: #1e293b;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-dark: #2d3a4f;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.16);
            --transition: all 0.25s ease;
        }

        *,
        *::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;
            font-size: 16px;
            line-height: 1.7;
            background: var(--bg-light);
            color: var(--text-body);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .container-narrow {
            max-width: 880px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--bg-dark);
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 40px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: rgba(11, 15, 26, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 20px;
        }

        .brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .brand-highlight {
            color: var(--accent);
        }

        .main-nav .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-item {
            display: block;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            border-radius: 999px;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }

        .nav-item:hover {
            color: #fff;
            background: rgba(124, 108, 255, 0.15);
        }

        .nav-item.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(99, 102, 241, 0.45);
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--accent);
            color: #0b0f1a;
            font-size: 14px;
            font-weight: 700;
            border-radius: 999px;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
        }

        .header-btn:hover {
            background: var(--accent-light);
            color: #0b0f1a;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.45);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            color: #fff;
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background:
                linear-gradient(135deg, rgba(11, 15, 26, 0.97) 0%, rgba(25, 24, 58, 0.93) 55%, rgba(79, 70, 229, 0.82) 100%),
                url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            padding: 80px 0 64px;
            color: var(--text-light);
            position: relative;
            border-bottom: 2px solid rgba(99, 102, 241, 0.25);
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 28px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--accent-light);
        }

        .breadcrumb i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.4);
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, 0.18);
            color: var(--accent-light);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            border: 1px solid rgba(245, 158, 11, 0.35);
            margin-bottom: 18px;
        }

        .article-category-badge i {
            font-size: 12px;
        }

        .article-hero h1 {
            font-size: 40px;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            max-width: 780px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
            margin-bottom: 22px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .meta-item i {
            color: var(--accent-light);
            font-size: 13px;
        }

        .article-excerpt {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.78);
            max-width: 760px;
            border-left: 3px solid var(--accent);
            padding-left: 18px;
        }

        /* ===== Article Body ===== */
        .article-body-area {
            padding: 60px 0 72px;
        }

        .article-content-wrap {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 48px;
            margin-bottom: 32px;
            border: 1px solid rgba(226, 232, 240, 0.6);
        }

        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
        }

        .article-content p {
            margin-bottom: 22px;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--bg-dark);
            margin: 34px 0 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid #eef2f7;
            letter-spacing: -0.3px;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--bg-dark);
            margin: 28px 0 12px;
        }

        .article-content h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--bg-dark);
            margin: 22px 0 8px;
        }

        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 20px 0;
            box-shadow: var(--shadow);
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 22px 24px;
        }

        .article-content ul {
            list-style: disc;
        }

        .article-content ol {
            list-style: decimal;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: #f5f7ff;
            padding: 18px 24px;
            border-radius: 0 14px 14px 0;
            margin: 24px 0;
            font-style: italic;
            color: #475569;
        }

        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: var(--primary-dark);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 15px;
        }

        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 12px 16px;
            text-align: left;
        }

        .article-content th {
            background: var(--bg-light);
            font-weight: 700;
            color: var(--bg-dark);
        }

        .article-content code {
            background: #f1f5f9;
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
            color: var(--primary-dark);
        }

        .article-not-found {
            text-align: center;
            padding: 48px 24px;
        }

        .article-not-found i {
            font-size: 48px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .article-not-found h2 {
            font-size: 28px;
            margin-bottom: 12px;
            color: var(--bg-dark);
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            margin-top: 32px;
        }

        .tag-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            margin-right: 4px;
        }

        .tag-chip {
            display: inline-block;
            padding: 6px 14px;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 13px;
            color: var(--text-body);
            transition: var(--transition);
        }

        .tag-chip:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
        }

        .article-share {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            background: var(--bg-dark);
            border-radius: var(--radius);
            padding: 18px 24px;
            margin-top: 24px;
        }

        .share-title {
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .share-title i {
            color: var(--accent);
        }

        .share-btns {
            display: flex;
            gap: 10px;
        }

        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 15px;
            transition: var(--transition);
        }

        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        .share-btn.weibo:hover {
            background: #e6162d;
        }

        .share-btn.wechat:hover {
            background: #07c160;
        }

        .share-btn.qq:hover {
            background: #12b7f5;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 64px 0;
            background: var(--bg-light);
        }

        .related-section .section-title {
            text-align: center;
        }

        .related-section .section-subtitle {
            text-align: center;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid rgba(226, 232, 240, 0.5);
            transition: var(--transition);
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .related-card .card-img {
            position: relative;
            height: 170px;
            overflow: hidden;
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .related-card:hover .card-img img {
            transform: scale(1.06);
        }

        .related-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(11, 15, 26, 0.5) 100%);
        }

        .card-category {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(11, 15, 26, 0.78);
            backdrop-filter: blur(6px);
            color: var(--accent-light);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            border: 1px solid rgba(245, 158, 11, 0.35);
        }

        .card-body {
            padding: 20px;
        }

        .card-body h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--bg-dark);
        }

        .card-body h3 a {
            color: var(--bg-dark);
        }

        .card-body h3 a:hover {
            color: var(--primary);
        }

        .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
        }

        .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .card-meta i {
            font-size: 11px;
            color: var(--primary);
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            background: var(--bg-dark);
            padding: 72px 0;
            color: var(--text-light);
            position: relative;
            overflow: hidden;
        }

        .faq-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .faq-section .section-title {
            color: #fff;
            text-align: center;
        }

        .faq-section .section-subtitle {
            color: rgba(255, 255, 255, 0.55);
            text-align: center;
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 0;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(99, 102, 241, 0.4);
            background: rgba(255, 255, 255, 0.06);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            position: relative;
        }

        .faq-question .faq-icon {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: rgba(99, 102, 241, 0.25);
            color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .faq-answer {
            padding: 0 24px 20px 68px;
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            display: none;
        }

        .faq-question::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
        }

        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary,
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 700;
            transition: var(--transition);
        }

        .btn-primary {
            background: #0b0f1a;
            color: #fff;
            box-shadow: 0 6px 20px rgba(11, 15, 26, 0.3);
        }

        .btn-primary:hover {
            background: #1e293b;
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(11, 15, 26, 0.4);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
            border-top: 2px solid rgba(99, 102, 241, 0.25);
            position: relative;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .brand {
            font-size: 24px;
            margin-bottom: 14px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
            margin-top: 14px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            padding: 6px 0;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent-light);
            transform: translateX(4px);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Focus states ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }

            .article-hero h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }

            .main-nav {
                position: fixed;
                top: 0;
                right: -300px;
                width: 280px;
                height: 100vh;
                background: var(--bg-dark);
                padding: 86px 24px 40px;
                transition: right 0.3s ease;
                z-index: 1001;
                border-left: 1px solid rgba(255, 255, 255, 0.08);
            }

            .main-nav.open {
                right: 0;
            }

            .main-nav .nav-list {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .nav-item {
                display: block;
                width: 100%;
                padding: 12px 16px;
                border-radius: 12px;
            }

            .nav-toggle {
                display: flex;
            }

            .header-btn {
                padding: 8px 16px;
                font-size: 13px;
            }

            .article-hero {
                padding: 60px 0 48px;
            }

            .article-hero h1 {
                font-size: 28px;
            }

            .article-content-wrap {
                padding: 28px 22px;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-section h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .container-narrow {
                padding: 0 16px;
            }

            .article-hero h1 {
                font-size: 24px;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

            .article-excerpt {
                font-size: 15px;
            }

            .article-content-wrap {
                padding: 22px 18px;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .section-title {
                font-size: 26px;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-question .faq-icon {
                width: 26px;
                height: 26px;
                font-size: 12px;
            }

            .faq-answer {
                padding: 0 18px 16px 52px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }

            .article-share {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --accent: #22d3ee;
  --accent-warm: #f59e0b;
  --bg-deep: #070b14;
  --bg-body: #0b1120;
  --bg-card: #101a2c;
  --bg-panel: rgba(15, 23, 42, 0.72);
  --text-main: #e6edf6;
  --text-secondary: #a8b3c7;
  --text-muted: #6c7a92;
  --border-card: rgba(148, 163, 184, 0.14);
  --border-glow: rgba(99, 102, 241, 0.45);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.28);
  --shadow-glow: 0 0 36px rgba(99, 102, 241, 0.24);
  --space-section: 110px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
.container {
  width: min(1240px, 92%);
  margin: 0 auto;
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  max-width: 100%;
  display: block;
}
button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}
ul {
  list-style: none;
}
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(7, 11, 20, 0.82);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.brand {
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.5px;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 2px;
  white-space: nowrap;
}
.brand-highlight {
  color: var(--primary-light);
}
.main-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-list .nav-item {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 999px;
  transition: all 0.24s ease;
  border: 1px solid transparent;
}
.nav-list .nav-item:hover {
  color: var(--text-main);
  background: rgba(99, 102, 241, 0.08);
  border-color: rgba(99, 102, 241, 0.18);
}
.nav-list .nav-item.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.24), rgba(34, 211, 238, 0.16));
  border-color: rgba(99, 102, 241, 0.36);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.18);
}
.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-btn {
  padding: 9px 20px;
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.32);
  transition: all 0.24s ease;
  white-space: nowrap;
}
.header-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.44);
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--text-main);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
}
.page-hero {
  position: relative;
  padding: 90px 0 130px;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.66), rgba(11, 17, 32, 0.94)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.35), transparent 65%);
  filter: blur(20px);
  pointer-events: none;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.breadcrumb a:hover {
  color: var(--primary-light);
}
.breadcrumb i {
  font-size: 12px;
  color: var(--text-muted);
}
.hero-content {
  max-width: 760px;
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(99, 102, 241, 0.14);
  border: 1px solid rgba(99, 102, 241, 0.26);
  color: var(--primary-light);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
  letter-spacing: 0.6px;
}
.hero-badge i {
  font-size: 12px;
}
.page-hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
  background: linear-gradient(120deg, #ffffff 24%, var(--primary-light) 64%, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-muted);
  font-size: 14px;
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.hero-meta i {
  color: var(--primary-light);
  font-size: 13px;
}
.section {
  padding: var(--space-section) 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.section-head .kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary-light);
  margin-bottom: 10px;
}
.section-head .kicker::before {
  content: '';
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 99px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
}
.section-head .head-desc {
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 520px;
  margin-top: 10px;
}
.section-head .link-more {
  color: var(--primary-light);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
  white-space: nowrap;
}
.section-head .link-more:hover {
  border-color: var(--primary-light);
}
.sub-cats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.sub-cat-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px 30px 30px;
  transition: all 0.3s ease;
  overflow: hidden;
}
.sub-cat-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 24px;
  right: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.3s;
}
.sub-cat-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.sub-cat-card:hover::after {
  opacity: 1;
}
.sub-cat-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  font-size: 24px;
  margin-bottom: 22px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(34, 211, 238, 0.12));
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--primary-light);
}
.sub-cat-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.sub-cat-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 20px;
}
.sub-cat-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 999px;
}
.guide-section {
  background: linear-gradient(180deg, rgba(11, 17, 32, 0) 0%, rgba(10, 15, 28, 0.5) 50%, rgba(11, 17, 32, 0) 100%);
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.32s ease;
  display: flex;
  flex-direction: column;
}
.guide-card:hover {
  transform: translateY(-8px);
  border-color: rgba(99, 102, 241, 0.38);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.guide-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.guide-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.guide-card:hover .guide-media img {
  transform: scale(1.05);
}
.guide-media .tag-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(7, 11, 20, 0.72);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
}
.guide-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.guide-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.55;
  margin-bottom: 10px;
  transition: color 0.2s;
}
.guide-card:hover .guide-body h3 {
  color: var(--primary-light);
}
.guide-body .guide-excerpt {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.72;
  margin-bottom: 18px;
  flex: 1;
}
.guide-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding-top: 16px;
  font-size: 12px;
  color: var(--text-muted);
}
.guide-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.guide-meta i {
  font-size: 11px;
}
.hud-panel {
  position: relative;
  background:
    linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(34, 211, 238, 0.04)),
    var(--bg-deep);
  border: 1px solid rgba(99, 102, 241, 0.22);
  border-radius: 24px;
  padding: 56px;
  overflow: hidden;
}
.hud-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.6), transparent);
}
.hud-panel::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.22), transparent 65%);
  pointer-events: none;
}
.hud-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  z-index: 2;
}
.hud-item {
  text-align: center;
  padding: 20px 12px;
  border-radius: var(--radius-lg);
  background: rgba(148, 163, 184, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.08);
  transition: background 0.3s;
}
.hud-item:hover {
  background: rgba(99, 102, 241, 0.08);
}
.hud-number {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.2;
  background: linear-gradient(135deg, #ffffff, var(--primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}
.hud-label {
  font-size: 14px;
  color: var(--text-secondary);
  letter-spacing: 1px;
}
.hud-plus {
  color: var(--accent);
  font-size: 28px;
  vertical-align: super;
  margin-left: 2px;
}
.flow-section {
  position: relative;
}
.flow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  counter-reset: flow;
}
.flow-step {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 40px 30px 34px;
  text-align: left;
  transition: all 0.3s;
}
.flow-step:hover {
  border-color: rgba(34, 211, 238, 0.34);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
  transform: translateY(-4px);
}
.flow-step .flow-num {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.flow-step .flow-num::before {
  counter-increment: flow;
  content: '0' counter(flow);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  font-size: 15px;
  letter-spacing: 0;
  background: rgba(34, 211, 238, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.26);
  color: var(--accent);
}
.flow-step h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.flow-step p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.78;
}
.faq-section {
  background: linear-gradient(180deg, rgba(11, 17, 32, 0) 0%, rgba(8, 12, 22, 0.44) 50%, rgba(11, 17, 32, 0) 100%);
}
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.25s;
}
.faq-item:hover {
  border-color: rgba(99, 102, 241, 0.26);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 26px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  list-style: none;
  user-select: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary i {
  color: var(--primary-light);
  font-size: 15px;
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item[open] summary i {
  transform: rotate(180deg);
}
.faq-answer {
  padding: 0 26px 24px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.85;
}
.faq-answer p {
  margin-top: 4px;
}
.cta-section {
  padding: 88px 0;
}
.cta-box {
  position: relative;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.24), rgba(124, 58, 237, 0.12), rgba(7, 11, 20, 0.3)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 28px;
  padding: 64px;
  text-align: center;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(7, 11, 20, 0.62);
  z-index: 0;
}
.cta-box h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}
.cta-box p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 1;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.26s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.34);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(99, 102, 241, 0.46);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.16);
  transform: translateY(-3px);
}
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding-top: 70px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .brand {
  font-size: 24px;
  margin-bottom: 18px;
}
.footer-desc {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.85;
  max-width: 340px;
  margin-top: 16px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.footer-col a {
  display: block;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 10px;
  transition: color 0.2s;
}
.footer-col a:hover {
  color: var(--primary-light);
}
.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding: 28px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 13px;
}
@media (max-width: 1024px) {
  .hero-content {
    max-width: 640px;
  }
  .page-hero h1 {
    font-size: 38px;
  }
  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .guide-body h3 {
    font-size: 17px;
  }
  .hud-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .flow-grid {
    grid-template-columns: 1fr;
    max-width: 640px;
    margin: 0 auto;
  }
  .cta-box {
    padding: 48px 32px;
  }
}
@media (max-width: 768px) {
  :root {
    --space-section: 72px;
  }
  .header-inner {
    height: 64px;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(7, 11, 20, 0.96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-card);
    padding: 14px 5%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    z-index: 99;
  }
  .main-nav.open {
    max-height: 320px;
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }
  .nav-list .nav-item {
    justify-content: center;
    border-radius: 10px;
    padding: 12px 16px;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .header-btn {
    display: none;
  }
  .page-hero {
    padding: 60px 0 90px;
  }
  .page-hero h1 {
    font-size: 30px;
  }
  .hero-desc {
    font-size: 16px;
  }
  .section-head {
    margin-bottom: 32px;
  }
  .section-head h2 {
    font-size: 27px;
  }
  .sub-cats {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .guide-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .hud-panel {
    padding: 36px 24px;
  }
  .hud-grid {
    grid-template-columns: 1fr;
  }
  .hud-number {
    font-size: 36px;
  }
  .cta-box h2 {
    font-size: 28px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 520px) {
  .container {
    width: 90%;
  }
  .page-hero h1 {
    font-size: 26px;
    line-height: 1.3;
  }
  .hero-meta {
    gap: 10px;
    font-size: 13px;
  }
  .breadcrumb {
    font-size: 13px;
    flex-wrap: wrap;
  }
  .guide-grid {
    max-width: 100%;
  }
  .hud-panel {
    padding: 28px 18px;
    border-radius: 18px;
  }
  .cta-box {
    padding: 40px 20px;
  }
  .btn-primary,
  .btn-ghost {
    width: 100%;
    padding: 13px 20px;
  }
  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .footer-bottom {
    font-size: 12px;
    line-height: 1.7;
  }
}

/* roulang page: category3 */
:root {
  --bg: #080d1a;
  --bg-deep: #060a14;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: #101a2e;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --primary: #ffab2e;
  --primary-deep: #ff7b00;
  --secondary: #7c5cff;
  --cyan: #38e1ff;
  --green: #34d399;
  --red: #ff5d6c;
  --text: #e8edf7;
  --muted: #94a3bd;
  --dim: #5b6b88;
  --radius-lg: 20px;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.42);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.28);
  --glow: 0 8px 26px rgba(255, 140, 0, 0.22);
  --font: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.25s ease; }
button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; }
ul, ol { list-style: none; }
::selection { background: rgba(255, 171, 46, 0.3); color: #fff; }

.container {
  width: min(1200px, 92%);
  margin-inline: auto;
}

/* ===== 按钮系统 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: all 0.28s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, #ffb347, #ff7b00);
  color: #0a0f1e;
  box-shadow: var(--glow);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(255, 140, 0, 0.32);
  color: #0a0f1e;
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 14px rgba(255, 140, 0, 0.2); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border-color: var(--border-strong);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 171, 46, 0.5);
  transform: translateY(-3px);
}
.btn-block { width: 100%; }
.btn-sm { padding: 7px 16px; font-size: 0.85rem; }
.btn-outline {
  background: transparent;
  border-color: rgba(255, 171, 46, 0.45);
  color: var(--primary);
}
.btn-outline:hover {
  background: rgba(255, 171, 46, 0.12);
  border-color: var(--primary);
  transform: translateY(-2px);
}
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(8, 13, 26, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 72px;
  padding-block: 10px;
}
.brand {
  display: inline-flex;
  align-items: center;
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text);
  line-height: 1.2;
}
.brand-highlight {
  background: linear-gradient(135deg, #ffb347, #ff7b00);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-right: 2px;
}
.main-nav { flex: 0 1 auto; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px;
  margin: 0;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.nav-item {
  display: inline-block;
  padding: 8px 19px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.nav-item:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
}
.nav-item.active {
  background: linear-gradient(135deg, #ffb347, #ff7b00);
  color: #0a0f1e;
  font-weight: 700;
  box-shadow: 0 4px 18px rgba(255, 140, 0, 0.3);
}
.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 22px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #0a0f1e;
  background: linear-gradient(135deg, #54e1a6, #1fb573);
  box-shadow: 0 6px 20px rgba(31, 181, 115, 0.22);
  transition: all 0.28s ease;
}
.header-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(31, 181, 115, 0.3);
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--border-strong);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-size: 1.1rem;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
}
.nav-toggle:hover { background: rgba(255, 255, 255, 0.1); }

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 110px 0 90px;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 78% 18%, rgba(255, 140, 0, 0.16), transparent 55%),
    radial-gradient(ellipse at 18% 80%, rgba(124, 92, 255, 0.12), transparent 50%),
    linear-gradient(180deg, rgba(8, 13, 26, 0.78) 0%, rgba(8, 13, 26, 0.92) 100%);
  z-index: 1;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  z-index: 1;
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.85rem;
  color: var(--dim);
  margin-bottom: 26px;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { font-size: 0.7rem; color: var(--dim); }
.breadcrumb span { color: var(--primary); }
.hero-inner h1 {
  font-size: clamp(2rem, 4.6vw, 3.1rem);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.grad-text {
  background: linear-gradient(90deg, #ffb347, #ff7b00);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-inner > p {
  max-width: 660px;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.85;
  margin-bottom: 30px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 42px; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 180px));
  gap: 22px;
  max-width: 620px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.stat-item strong {
  display: block;
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.stat-item span { font-size: 0.88rem; color: var(--dim); }

/* ===== Section 通用 ===== */
.section { padding: 96px 0; position: relative; }
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(255, 171, 46, 0.12);
  border: 1px solid rgba(255, 171, 46, 0.25);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-head p { color: var(--muted); line-height: 1.8; }

/* ===== 福利类型 ===== */
.types-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.type-card {
  position: relative;
  background: linear-gradient(160deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all 0.3s ease;
  overflow: hidden;
}
.type-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255, 171, 46, 0.7), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.type-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 171, 46, 0.3);
  box-shadow: var(--shadow-lg);
}
.type-card:hover::before { opacity: 1; }
.type-card i {
  width: 54px;
  height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  font-size: 1.35rem;
  background: linear-gradient(135deg, rgba(255, 171, 46, 0.18), rgba(255, 123, 0, 0.1));
  color: var(--primary);
  margin-bottom: 20px;
  border: 1px solid rgba(255, 171, 46, 0.22);
}
.type-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.type-card p { color: var(--muted); font-size: 0.93rem; line-height: 1.75; }

/* ===== 热门活动 ===== */
.hot-events { background: var(--bg-deep); }
.events-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.event-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.32s ease;
  display: flex;
  flex-direction: column;
}
.event-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 171, 46, 0.32);
  box-shadow: var(--shadow-lg);
}
.event-media {
  position: relative;
  height: 180px;
  background-size: cover;
  background-position: center;
}
.event-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(8, 13, 26, 0.86) 100%);
}
.event-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: linear-gradient(135deg, #ffb347, #ff7b00);
  color: #0a0f1e;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 5px 13px;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(255, 140, 0, 0.3);
}
.event-rate {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(8, 13, 26, 0.72);
  border: 1px solid var(--border-strong);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
.event-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.event-tags { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.event-tags span {
  font-size: 0.76rem;
  color: var(--cyan);
  background: rgba(56, 225, 255, 0.08);
  border: 1px solid rgba(56, 225, 255, 0.22);
  padding: 3px 11px;
  border-radius: 999px;
}
.event-body h3 { font-size: 1.18rem; font-weight: 700; margin-bottom: 10px; }
.event-body > p {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.78;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.event-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--dim);
  margin-bottom: 16px;
  margin-top: auto;
}
.event-meta i { color: var(--primary); }
.event-body .btn { margin-top: 6px; }

/* ===== 领取流程 ===== */
.howto {
  background: linear-gradient(rgba(10, 15, 30, 0.92), rgba(10, 15, 30, 0.96)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}
.step-item {
  position: relative;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 24px 26px;
  text-align: center;
  transition: all 0.3s ease;
  overflow: hidden;
}
.step-item:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 171, 46, 0.3);
  background: rgba(255, 255, 255, 0.06);
}
.step-num {
  position: absolute;
  top: 16px;
  right: 18px;
  font-size: 0.85rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.14);
  letter-spacing: 1px;
}
.step-item i {
  width: 58px;
  height: 58px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 1.3rem;
  color: var(--primary);
  background: rgba(255, 171, 46, 0.1);
  border: 1px dashed rgba(255, 171, 46, 0.4);
}
.step-item h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 9px; }
.step-item p { font-size: 0.88rem; color: var(--muted); line-height: 1.7; }

/* ===== 礼包兑换热榜 ===== */
.rank-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.rank-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 2fr) minmax(130px, 1fr) 76px 104px;
  align-items: center;
  gap: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  transition: all 0.28s ease;
}
.rank-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 171, 46, 0.28);
  transform: translateX(5px);
}
.rank-no {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-weight: 800;
  font-size: 1.1rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  color: var(--muted);
}
.rank-no.gold {
  background: linear-gradient(135deg, #ffb347, #ff7b00);
  color: #0a0f1e;
  border: none;
  box-shadow: 0 4px 16px rgba(255, 140, 0, 0.3);
}
.rank-no.silver { background: rgba(200, 210, 225, 0.14); color: #cdd6e4; }
.rank-no.bronze { background: rgba(255, 171, 46, 0.14); color: #d9a06a; }
.rank-info h3 { font-size: 1.02rem; font-weight: 700; margin-bottom: 4px; }
.rank-info p { font-size: 0.86rem; color: var(--muted); }
.rank-count {
  font-size: 0.88rem;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.rank-count i { color: var(--primary); }
.rank-stock {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  text-align: center;
  display: inline-block;
  width: fit-content;
}
.rank-stock.ok { color: var(--green); background: rgba(52, 211, 153, 0.1); border: 1px solid rgba(52, 211, 153, 0.25); }
.rank-stock.hurry { color: var(--red); background: rgba(255, 93, 108, 0.1); border: 1px solid rgba(255, 93, 108, 0.25); }

/* ===== FAQ ===== */
.faq { background: var(--bg-deep); }
.faq-list { max-width: 860px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.faq-item:hover { border-color: var(--border-strong); }
.faq-item[open] { border-color: rgba(255, 171, 46, 0.3); background: rgba(255, 255, 255, 0.05); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 19px 22px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i {
  flex-shrink: 0;
  color: var(--primary);
  transition: transform 0.32s ease;
  font-size: 0.9rem;
}
.faq-item[open] summary i { transform: rotate(180deg); }
.faq-answer { padding: 0 22px 20px; color: var(--muted); font-size: 0.93rem; line-height: 1.8; }
.faq-answer p { margin-bottom: 0; }

/* ===== CTA ===== */
.cta {
  background-size: cover;
  background-position: center;
  text-align: center;
}
.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 30%, rgba(255, 140, 0, 0.14), transparent 60%),
    linear-gradient(180deg, rgba(8, 13, 26, 0.9), rgba(8, 13, 26, 0.96));
}
.cta-inner { position: relative; z-index: 2; max-width: 640px; }
.cta h2 { font-size: clamp(1.7rem, 3.6vw, 2.4rem); font-weight: 800; margin-bottom: 14px; }
.cta p { color: var(--muted); line-height: 1.8; margin-bottom: 30px; }
.cta-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto 16px;
}
.cta-form input {
  flex: 1;
  min-width: 0;
  padding: 13px 20px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  font-size: 0.94rem;
  transition: all 0.3s ease;
}
.cta-form input::placeholder { color: var(--dim); }
.cta-form input:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 0 4px rgba(255, 171, 46, 0.12);
}
.cta-note { font-size: 0.82rem; color: var(--dim); }

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 64px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 42px;
  border-bottom: 1px solid var(--border);
}
.footer-brand .brand { font-size: 1.25rem; margin-bottom: 16px; display: inline-block; }
.footer-desc {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.75;
  max-width: 340px;
}
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text);
  letter-spacing: 1px;
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.footer-col a {
  color: var(--muted);
  font-size: 0.9rem;
  width: fit-content;
  transition: color 0.25s ease, transform 0.25s ease;
}
.footer-col a:hover { color: var(--primary); transform: translateX(4px); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  padding-top: 26px;
  color: var(--dim);
  font-size: 0.84rem;
}
.footer-bottom span + span { color: var(--dim); opacity: 0.8; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .types-grid { grid-template-columns: repeat(2, 1fr); }
  .events-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .rank-item {
    grid-template-columns: 52px minmax(0, 1.8fr) minmax(110px, 1fr) 70px;
  }
  .rank-stock { display: none; }
}
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .header-btn { display: none; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 15, 28, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 16px 4%;
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-lg);
  }
  .main-nav.open { display: block; }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    background: transparent;
    border: none;
    padding: 0;
    gap: 6px;
  }
  .nav-item { border-radius: 12px; text-align: center; padding: 12px 16px; font-size: 0.98rem; }
  .nav-item.active { border-radius: 12px; }
}
@media (max-width: 768px) {
  .section { padding: 70px 0; }
  .page-hero { padding: 80px 0 64px; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .stat-item strong { font-size: 1.35rem; }
  .types-grid { grid-template-columns: 1fr; }
  .events-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom { flex-direction: column; }
  .rank-item {
    grid-template-columns: 46px minmax(0, 1fr) auto;
    gap: 12px;
    padding: 16px;
  }
  .rank-count { display: none; }
  .rank-stock { display: none; }
  .rank-info p { font-size: 0.82rem; }
  .cta-form { flex-direction: column; }
}
@media (max-width: 520px) {
  .steps-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { grid-template-columns: 1fr; max-width: 100%; }
  .stat-item { display: flex; align-items: baseline; gap: 10px; }
  .stat-item strong { font-size: 1.2rem; }
  .stat-item span { font-size: 0.85rem; }
  .event-media { height: 150px; }
  .rank-item { grid-template-columns: 40px minmax(0, 1fr); }
  .rank-item .btn { grid-column: 1 / -1; width: 100%; margin-top: 4px; }
  .brand { font-size: 1.12rem; }
}