/* roulang page: index */
:root{--primary:#6c5ce7;--primary-light:#a29bfe;--accent:#00d2ff;--accent-hot:#ff6b9d;--success:#00e676;--warning:#ffd740;--bg:#080a1a;--bg-deep:#050715;--bg-surface:#0e1028;--bg-card:#141833;--text:#eef0ff;--text-muted:#8a8cb0;--text-dim:#5a5c80;--border:#1e2148;--border-glow:rgba(108,92,231,0.3);--radius-lg:18px;--radius-md:12px;--radius-sm:8px;--shadow:0 10px 40px rgba(0,0,0,0.35);--shadow-neon:0 0 40px rgba(108,92,231,0.15);--transition:all .3s cubic-bezier(.25,.46,.45,.94);--font:'Inter',-apple-system,'PingFang SC','Microsoft YaHei','Segoe UI',sans-serif}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
button{font-family:inherit;border:none;cursor:pointer;background:none}
input{font-family:inherit}
ul,ol{list-style:none}
.grid-container{padding-left:20px;padding-right:20px}
.section{padding:clamp(60px,7vw,100px) 0}
.section-head{text-align:center;max-width:720px;margin:0 auto clamp(40px,5vw,60px)}
.section-tag{display:inline-block;background:rgba(108,92,231,.15);color:var(--primary-light);border:1px solid rgba(108,92,231,.3);padding:4px 14px;border-radius:20px;font-size:13px;font-weight:600;letter-spacing:.5px;margin-bottom:14px}
.section-head h2{font-size:clamp(28px,4vw,40px);font-weight:700;line-height:1.3;margin-bottom:12px;background:linear-gradient(135deg,var(--text),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-head p{color:var(--text-muted);font-size:16px}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(8,10,26,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;box-shadow:0 0 20px rgba(108,92,231,.4)}
.logo-text{font-size:20px;font-weight:700;color:var(--text);display:flex;align-items:baseline;gap:6px}
.logo-text .logo-sub{font-size:13px;color:var(--text-muted);font-weight:500}
.main-nav{display:flex;align-items:center;gap:28px}
.main-nav>a:not(.btn){color:var(--text-muted);font-size:15px;font-weight:500;position:relative;padding:6px 2px}
.main-nav>a:not(.btn)::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:2px;transition:var(--transition)}
.main-nav>a:not(.btn):hover{color:var(--text)}
.main-nav>a:not(.btn):hover::after{width:100%}
.main-nav>a.active{color:var(--text)}
.main-nav>a.active::after{width:100%}
.nav-toggle{display:none;color:var(--text);font-size:22px;padding:8px;border-radius:8px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:50px;font-size:15px;font-weight:600;line-height:1.4;transition:var(--transition);border:1px solid transparent}
.btn-lg{padding:15px 36px;font-size:16px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 4px 20px rgba(108,92,231,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(108,92,231,.5)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(255,255,255,.3)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5)}
.btn-accent{background:linear-gradient(135deg,var(--accent),var(--primary));color:#fff}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,210,255,.4)}
.hero{position:relative;padding:clamp(80px,10vw,140px) 0;background-size:cover;background-position:center;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(5,7,21,.92),rgba(8,10,26,.75),rgba(108,92,231,.45));z-index:1}
.hero::after{content:'';position:absolute;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(108,92,231,.25),transparent 70%);top:-200px;right:-200px;z-index:1;pointer-events:none}
.hero-content{position:relative;z-index:2;max-width:900px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:6px 18px;border-radius:50px;font-size:14px;font-weight:600;color:var(--accent);margin-bottom:24px;backdrop-filter:blur(10px)}
.hero-badge i{color:var(--accent)}
.hero h1{font-size:clamp(36px,5.5vw,58px);font-weight:800;line-height:1.2;color:#fff;margin-bottom:20px;letter-spacing:-.5px}
.hero-sub{font-size:clamp(16px,1.8vw,20px);color:rgba(238,240,255,.85);max-width:640px;margin-bottom:36px;line-height:1.8}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:48px}
.hero-metrics{display:flex;gap:clamp(20px,4vw,48px);flex-wrap:wrap;padding-top:32px;border-top:1px solid rgba(255,255,255,.15)}
.metric-mini{display:flex;flex-direction:column;gap:4px}
.metric-value{font-size:28px;font-weight:700;color:#fff}
.metric-label{font-size:13px;color:rgba(238,240,255,.7)}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
@media(max-width:1024px){.features-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.features-grid{grid-template-columns:1fr}}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 24px;transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--border-glow)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,rgba(108,92,231,.2),rgba(0,210,255,.2));display:flex;align-items:center;justify-content:center;font-size:22px;color:var(--accent);margin-bottom:20px}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:10px;color:var(--text)}
.feature-card p{font-size:14px;color:var(--text-muted);line-height:1.7}
.cat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
@media(max-width:768px){.cat-grid{grid-template-columns:1fr}}
.cat-card{border-radius:var(--radius-lg);overflow:hidden;position:relative;min-height:280px;display:flex;align-items:flex-end;transition:var(--transition);border:1px solid var(--border)}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-neon),0 10px 40px rgba(0,0,0,.3);border-color:var(--border-glow)}
.cat-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.cat-card:hover img{transform:scale(1.05)}
.cat-card-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 20%,rgba(5,7,21,.75) 60%,rgba(5,7,21,.95));z-index:1}
.cat-card-content{position:relative;z-index:2;padding:32px;width:100%}
.cat-card-content .badge{display:inline-block;background:var(--primary);color:#fff;padding:5px 14px;border-radius:20px;font-size:12px;font-weight:600;margin-bottom:12px}
.cat-card-content h3{font-size:22px;font-weight:700;color:#fff;margin-bottom:8px}
.cat-card-content p{font-size:14px;color:rgba(238,240,255,.8);margin-bottom:16px}
.cat-card-link{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:14px;font-weight:600}
.cat-card-link:hover{gap:14px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:1024px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.news-grid{grid-template-columns:1fr}}
.news-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px;display:flex;flex-direction:column;gap:12px;transition:var(--transition);height:100%}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--border-glow)}
.news-card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.badge-cat{background:rgba(108,92,231,.2);color:var(--primary-light);padding:4px 12px;border-radius:16px;font-size:12px;font-weight:600}
.news-date{font-size:13px;color:var(--text-dim)}
.news-card h3{font-size:18px;font-weight:600;line-height:1.4;color:var(--text);margin-bottom:8px}
.news-card p{font-size:14px;color:var(--text-muted);line-height:1.7;flex-grow:1}
.news-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--accent);font-weight:600;margin-top:8px}
.stats-section{position:relative;background-size:cover;background-position:center;padding:clamp(60px,8vw,100px) 0}
.stats-section::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(5,7,21,.95),rgba(8,10,26,.85));z-index:1}
.stats-wrap{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
@media(max-width:768px){.stats-wrap{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.stats-wrap{grid-template-columns:1fr}}
.stat-block{text-align:center;background:rgba(20,24,51,.6);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 20px;backdrop-filter:blur(10px);transition:var(--transition)}
.stat-block:hover{transform:translateY(-4px);border-color:var(--border-glow)}
.stat-number{font-size:clamp(32px,4vw,44px);font-weight:800;background:linear-gradient(135deg,var(--accent),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:block;margin-bottom:8px}
.stat-label{font-size:14px;color:var(--text-muted)}
.process-section{position:relative;background-size:cover;background-position:center}
.process-section::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,10,26,.94),rgba(5,7,21,.97));z-index:1}
.process-wrap{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
@media(max-width:1024px){.process-wrap{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.process-wrap{grid-template-columns:1fr}}
.process-step{text-align:center;padding:32px 20px;position:relative}
.process-step::after{content:'';position:absolute;top:45%;right:-16px;width:32px;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:.5}
.process-step:last-child::after{display:none}
@media(max-width:1024px){.process-step:nth-child(2)::after{display:none}}
@media(max-width:520px){.process-step::after{display:none}}
.step-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;color:#fff;margin:0 auto 20px;box-shadow:0 0 20px rgba(108,92,231,.4)}
.process-step h3{font-size:17px;font-weight:600;color:var(--text);margin-bottom:10px}
.process-step p{font-size:14px;color:var(--text-muted);line-height:1.6}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:14px;overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:var(--border-glow)}
.faq-question{width:100%;padding:20px 24px;display:flex;justify-content:space-between;align-items:center;text-align:left;font-size:16px;font-weight:600;color:var(--text);background:transparent;transition:var(--transition)}
.faq-question:hover{background:rgba(108,92,231,.08)}
.faq-question i{color:var(--accent);transition:var(--transition);flex-shrink:0}
.faq-item.active .faq-question i{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px;color:var(--text-muted);font-size:14px;line-height:1.8}
.faq-item.active .faq-answer{max-height:300px;padding:0 24px 20px}
.cta-section{position:relative;background-size:cover;background-position:center;padding:clamp(70px,9vw,120px) 0;text-align:center}
.cta-section::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(5,7,21,.9),rgba(108,92,231,.55));z-index:1}
.cta-inner{position:relative;z-index:2}
.cta-section h2{font-size:clamp(30px,4vw,44px);font-weight:800;color:#fff;margin-bottom:16px}
.cta-section p{font-size:16px;color:rgba(255,255,255,.85);max-width:600px;margin:0 auto 32px;line-height:1.8}
.site-footer{background:var(--bg-deep);border-top:1px solid var(--border);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:40px;border-bottom:1px solid var(--border)}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr;gap:32px}}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--text-muted);font-size:14px;line-height:1.7;max-width:340px}
.footer-col h4{font-size:16px;font-weight:600;color:var(--text);margin-bottom:20px}
.footer-col a{display:block;color:var(--text-muted);font-size:14px;padding:6px 0;transition:var(--transition)}
.footer-col a:hover{color:var(--accent);padding-left:6px}
.footer-bottom{text-align:center;padding:20px 0;color:var(--text-dim);font-size:13px}
.empty-tip{text-align:center;padding:60px 0;color:var(--text-muted);font-size:16px}
.page-banner{position:relative;padding:clamp(60px,7vw,100px) 0;background-size:cover;background-position:center;text-align:center}
.page-banner::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(5,7,21,.88),rgba(8,10,26,.75));z-index:1}
.page-banner .grid-container{position:relative;z-index:2}
.page-banner .badge{display:inline-block;background:var(--primary);color:#fff;padding:6px 18px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:16px}
.page-banner h1{font-size:clamp(30px,4.5vw,44px);font-weight:800;color:#fff;margin-bottom:12px}
.page-banner p{font-size:16px;color:rgba(238,240,255,.8);max-width:600px;margin:0 auto}
.article-meta{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;margin-top:20px;font-size:14px;color:rgba(238,240,255,.7)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-body{padding:clamp(40px,5vw,70px) 0}
.article-content{max-width:820px;margin:0 auto;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:clamp(28px,4vw,48px)}
.article-content p{font-size:16px;line-height:1.9;color:var(--text-muted);margin-bottom:20px}
.article-content h2,.article-content h3{color:var(--text);margin:36px 0 16px}
.article-content img{border-radius:var(--radius-md);margin:24px 0}
.not-found{text-align:center;padding:60px 20px}
.not-found h2{font-size:28px;color:var(--text);margin-bottom:12px}
.not-found p{color:var(--text-muted);margin-bottom:24px}
.related-section{background:var(--bg-surface);padding:clamp(50px,6vw,80px) 0}
.related-section h2{text-align:center;font-size:clamp(24px,3vw,32px);font-weight:700;margin-bottom:36px}
.related-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px;display:block;transition:var(--transition);height:100%}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--border-glow)}
.related-card h3{font-size:16px;font-weight:600;color:var(--text);margin-bottom:8px;line-height:1.4}
.related-card p{font-size:13px;color:var(--text-muted);line-height:1.6}
.guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
@media(max-width:768px){.guide-grid{grid-template-columns:1fr}}
.guide-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;transition:var(--transition)}
.guide-card:hover{transform:translateY(-4px);border-color:var(--border-glow);box-shadow:var(--shadow)}
.guide-card .step-num{margin:0 0 16px;background:linear-gradient(135deg,var(--accent),var(--primary))}
.guide-card h3{font-size:17px;font-weight:600;margin-bottom:10px;color:var(--text)}
.guide-card p{font-size:14px;color:var(--text-muted);line-height:1.7}
.event-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
@media(max-width:768px){.event-list{grid-template-columns:1fr}}
.event-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;min-height:280px;display:flex;align-items:flex-end;background-size:cover;background-position:center;border:1px solid var(--border)}
.event-card::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(5,7,21,.92))}
.event-card-content{position:relative;z-index:2;padding:28px;width:100%}
.event-card-content .badge{display:inline-block;background:var(--accent-hot);color:#fff;padding:4px 12px;border-radius:16px;font-size:12px;font-weight:600;margin-bottom:12px}
.event-card-content h3{font-size:18px;font-weight:600;color:#fff;margin-bottom:6px}
.event-card-content p{font-size:13px;color:rgba(255,255,255,.8)}
.timeline{position:relative;max-width:760px;margin:0 auto;padding-left:40px}
.timeline::before{content:'';position:absolute;left:15px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--primary),var(--accent))}
.timeline-item{position:relative;margin-bottom:32px;padding:24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md)}
.timeline-item::before{content:'';position:absolute;left:-35px;top:30px;width:12px;height:12px;border-radius:50%;background:var(--accent);border:2px solid var(--bg);box-shadow:0 0 10px rgba(0,210,255,.5)}
.timeline-item h3{font-size:16px;font-weight:600;color:var(--text);margin-bottom:8px}
.timeline-item p{font-size:14px;color:var(--text-muted)}
@media(max-width:768px){.main-nav{position:fixed;top:72px;left:0;right:0;background:var(--bg-surface);flex-direction:column;padding:20px;gap:16px;border-bottom:1px solid var(--border);transform:translateY(-120%);transition:transform .3s ease;align-items:flex-start}.main-nav.open{transform:translateY(0)}.nav-toggle{display:block}.header-inner{height:64px}}

/* roulang page: article */
:root {
  --primary: #00e5ff;
  --primary-dark: #00b8d9;
  --secondary: #7c3aed;
  --accent: #ff2d55;
  --bg-dark: #0b0f19;
  --bg-body: #0d1220;
  --bg-card: #141c2c;
  --bg-card-hover: #1a2438;
  --bg-gradient: linear-gradient(135deg, #00e5ff 0%, #7c3aed 100%);
  --text-main: #e8ecf4;
  --text-muted: #8b93a7;
  --text-dim: #5a6275;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 229, 255, 0.3);
  --radius: 14px;
  --radius-lg: 24px;
  --radius-sm: 8px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.15);
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover, a:focus { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button:focus, input:focus, select:focus, textarea:focus, a:focus { outline: 2px solid var(--primary); outline-offset: 3px; }

.grid-container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.4;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.btn i { font-size: 0.9em; }
.btn-primary {
  background: var(--bg-gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.25);
}
.btn-primary:hover, .btn-primary:focus {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 229, 255, 0.4);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 10px rgba(0, 229, 255, 0.2); }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover, .btn-outline:focus {
  background: rgba(0, 229, 255, 0.1);
  color: var(--primary);
  transform: translateY(-2px);
}
.btn-sm { padding: 8px 20px; font-size: 0.85rem; }
.btn-lg { padding: 14px 36px; font-size: 1rem; }
.btn-block { width: 100%; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  background: rgba(0, 229, 255, 0.12);
  color: var(--primary);
  border: 1px solid rgba(0, 229, 255, 0.2);
  transition: var(--transition);
}
.badge-purple {
  background: rgba(124, 58, 237, 0.15);
  color: #c4b5fd;
  border-color: rgba(124, 58, 237, 0.3);
}
.badge-rose {
  background: rgba(255, 45, 85, 0.12);
  color: #fda4af;
  border-color: rgba(255, 45, 85, 0.25);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13, 18, 32, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.site-header:hover { border-bottom-color: rgba(0, 229, 255, 0.15); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  padding-top: 0;
  padding-bottom: 0;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--bg-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3);
}
.logo-text {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
  line-height: 1.2;
  display: flex;
  flex-direction: column;
}
.logo-sub {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 10px 18px;
  border-radius: 50px;
  text-decoration: none;
  transition: var(--transition);
  position: relative;
}
.main-nav a:hover { color: var(--text-main); background: rgba(255, 255, 255, 0.05); }
.main-nav a.active {
  color: var(--primary);
  background: rgba(0, 229, 255, 0.1);
  font-weight: 600;
}
.main-nav a.btn-primary {
  color: #fff;
  margin-left: 8px;
  padding: 10px 22px;
}
.main-nav a.btn-primary:hover { background: var(--bg-gradient); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 24px rgba(0, 229, 255, 0.35); }
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 1.3rem;
  width: 44px;
  height: 44px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.nav-toggle:hover { border-color: var(--primary); color: var(--primary); }

.article-banner {
  position: relative;
  padding: 100px 0 80px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.article-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13, 18, 32, 0.6) 0%, rgba(13, 18, 32, 0.92) 100%);
}
.article-banner .grid-container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--text-dim); }
.breadcrumb .current { color: var(--primary); font-weight: 500; }
.article-banner h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -1px;
  max-width: 900px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 50px;
  transition: var(--transition);
}
.article-meta .meta-item i { color: var(--primary); font-size: 0.9em; }

.article-main { padding: 0; background: var(--bg-body); }
.article-layout {
  max-width: 920px;
  margin: 0 auto;
  padding: 80px 0 60px;
}
.article-body {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.article-body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--bg-gradient);
}
.article-cover {
  margin: -48px -48px 40px;
  position: relative;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
}
.article-cover img {
  width: 100%;
  height: auto;
  max-height: 460px;
  object-fit: cover;
  border-radius: 0;
}
.article-content {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-main);
}
.article-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 1.6em 0 0.8em;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 1.4em 0 0.7em;
  color: #f0f4fa;
}
.article-content p { margin: 1em 0; color: #c8d0df; }
.article-content ul,
.article-content ol {
  padding-left: 1.6em;
  margin: 1em 0;
  color: #c8d0df;
}
.article-content ul li { list-style: disc; margin: 0.4em 0; }
.article-content ol li { list-style: decimal; margin: 0.4em 0; }
.article-content blockquote {
  border-left: 4px solid var(--secondary);
  background: rgba(124, 58, 237, 0.08);
  padding: 18px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.6em 0;
  color: #c4b5fd;
  font-style: italic;
}
.article-content img { border-radius: var(--radius); margin: 1.4em 0; box-shadow: var(--shadow-sm); }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 4px; }
.article-content a:hover { color: var(--primary-dark); }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.6em 0; font-size: 0.95rem; border-radius: var(--radius); overflow: hidden; }
.article-content th { background: var(--bg-card-hover); padding: 14px 16px; text-align: left; font-weight: 600; color: var(--text-main); border: 1px solid var(--border); }
.article-content td { padding: 12px 16px; border: 1px solid var(--border); color: var(--text-muted); }

.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.82rem;
  transition: var(--transition);
  cursor: default;
}
.tag:hover {
  border-color: var(--border-hover);
  color: var(--primary);
  background: rgba(0, 229, 255, 0.05);
}
.tag i { color: var(--primary); font-size: 0.85em; }

.article-share {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding: 20px 24px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.article-share span { font-size: 0.9rem; color: var(--text-muted); font-weight: 600; }
.article-share a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1rem;
  transition: var(--transition);
}
.article-share a:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(0, 229, 255, 0.08);
  transform: translateY(-3px);
  box-shadow: 0 4px 14px rgba(0, 229, 255, 0.2);
}

.not-found {
  text-align: center;
  padding: 60px 30px;
}
.not-found-icon {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: rgba(255, 45, 85, 0.08);
  border: 1px solid rgba(255, 45, 85, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.6rem;
  color: var(--accent);
  margin: 0 auto 24px;
  box-shadow: 0 0 30px rgba(255, 45, 85, 0.1);
}
.not-found h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}
.not-found p { color: var(--text-muted); margin-bottom: 32px; }

.related-section {
  background: var(--bg-dark);
  padding: 80px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head .section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(0, 229, 255, 0.1);
  padding: 8px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
  border: 1px solid rgba(0, 229, 255, 0.2);
}
.section-head h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
  letter-spacing: -0.5px;
}
.section-head p { color: var(--text-muted); max-width: 560px; margin: 0 auto; font-size: 1.05rem; }

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}
.related-card:hover .related-image img { transform: scale(1.06); }
.related-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.related-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
  border-radius: 0;
}
.related-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(13, 18, 32, 0.8) 100%);
}
.related-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: rgba(13, 18, 32, 0.8);
  backdrop-filter: blur(10px);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 50px;
  border: 1px solid rgba(0, 229, 255, 0.2);
}
.related-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.related-body h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.related-body h3 a { color: var(--text-main); text-decoration: none; }
.related-body h3 a:hover { color: var(--primary); }
.related-body p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 16px; line-height: 1.7; flex: 1; }
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: var(--transition);
}
.link-more:hover { color: var(--primary-dark); gap: 12px; }

.cta-section {
  position: relative;
  padding: 90px 0;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 15, 25, 0.9) 0%, rgba(124, 58, 237, 0.4) 60%, rgba(0, 229, 255, 0.3) 100%);
}
.cta-section .grid-container { position: relative; z-index: 2; }
.cta-section h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.cta-section p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.faq-section { padding: 80px 0; background: var(--bg-body); }
.faq-grid {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.faq-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--bg-gradient);
  opacity: 0;
  transition: var(--transition);
  border-radius: 4px 0 0 4px;
}
.faq-item:hover {
  border-color: var(--border-hover);
  transform: translateX(6px);
}
.faq-item:hover::before { opacity: 1; }
.faq-item h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
}
.faq-item h3 i { color: var(--primary); font-size: 1rem; }
.faq-item p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.8; padding-left: 26px; }

.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 20px; }
.footer-brand p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
  max-width: 360px;
}
.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
  position: relative;
  padding-bottom: 12px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 36px;
  height: 3px;
  background: var(--bg-gradient);
  border-radius: 4px;
}
.footer-col a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.92rem;
  padding: 6px 0;
  text-decoration: none;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--primary); padding-left: 6px; }
.footer-col a i { color: var(--primary); font-size: 0.85rem; width: 20px; text-align: center; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
}
.footer-bottom p {
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .header-inner { height: 68px; padding-left: 16px; padding-right: 16px; }
  .logo-text { font-size: 1.2rem; }
  .main-nav a { padding: 8px 14px; font-size: 0.9rem; }
  .article-banner { padding: 80px 0 60px; }
  .article-body { padding: 40px; }
  .article-cover { margin: -40px -40px 32px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(13, 18, 32, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: 20px;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
    z-index: 999;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; }
  .main-nav a { padding: 14px 20px; border-radius: var(--radius-sm); font-size: 1rem; }
  .main-nav a.btn-primary { margin-left: 0; text-align: center; }
  .article-banner { padding: 60px 0 48px; }
  .article-banner h1 { font-size: 1.8rem; }
  .article-layout { padding: 40px 0 32px; }
  .article-body { padding: 32px; }
  .article-cover { margin: -32px -32px 24px; }
  .article-content { font-size: 1rem; }
  .article-content h2 { font-size: 1.35rem; }
  .related-grid { grid-template-columns: 1fr; gap: 20px; }
  .cta-section { padding: 64px 0; background-attachment: scroll; }
  .faq-section { padding: 60px 0; }
  .faq-item { padding: 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .section-head { margin-bottom: 36px; }
  .section-head h2 { font-size: 1.8rem; }
}

@media (max-width: 520px) {
  .grid-container { padding-left: 16px; padding-right: 16px; }
  .header-inner { height: 60px; }
  .main-nav { top: 60px; }
  .logo-icon { width: 38px; height: 38px; font-size: 18px; border-radius: 12px; }
  .logo-text { font-size: 1.05rem; }
  .logo-sub { font-size: 0.65rem; letter-spacing: 1px; }
  .article-banner { padding: 44px 0 36px; }
  .article-banner h1 { font-size: 1.5rem; }
  .article-meta { gap: 8px; }
  .article-meta .meta-item { padding: 5px 10px; font-size: 0.78rem; }
  .article-layout { padding: 24px 0; }
  .article-body { padding: 24px; border-radius: 16px; }
  .article-cover { margin: -24px -24px 20px; }
  .article-content { font-size: 0.95rem; }
  .article-content h2 { font-size: 1.2rem; padding-left: 12px; }
  .article-content h3 { font-size: 1.1rem; }
  .article-share { padding: 16px; flex-wrap: wrap; }
  .related-image { height: 170px; }
  .cta-buttons .btn { width: 100%; max-width: 280px; }
  .footer-bottom p { font-size: 0.78rem; }
}

/* roulang page: category1 */
/* ===================== 设计变量 ===================== */
:root {
  --bg-body: #0b1120;
  --bg-deep: #070b14;
  --bg-card: #121a2c;
  --bg-panel: #0e1524;
  --primary: #4f8cff;
  --primary-dark: #2f6bd8;
  --accent: #00e5ff;
  --violet: #a855f7;
  --success: #22c55e;
  --warning: #f59e0b;
  --text: #e2e8f0;
  --text-strong: #ffffff;
  --text-weak: #8ea0b8;
  --border: rgba(148, 163, 184, 0.14);
  --border-primary: rgba(79, 140, 255, 0.35);
  --radius-lg: 18px;
  --radius-md: 13px;
  --radius-sm: 9px;
  --shadow-lg: 0 24px 50px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.28);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 78px;
}

/* ===================== 基础重置 ===================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-body);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button,
input,
select,
textarea {
  font-family: inherit;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.grid-container {
  max-width: 1200px;
}

/* ===================== 通用按钮 ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  padding: 12px 24px;
  font-size: 15px;
  line-height: 1.4;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--violet));
  color: #fff;
  box-shadow: 0 6px 20px rgba(79, 140, 255, 0.35);
}

.btn-primary:hover,
.btn-primary:focus {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(79, 140, 255, 0.5);
  color: #fff;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-strong);
  border: 1px solid var(--border);
  backdrop-filter: blur(6px);
}

.btn-ghost:hover,
.btn-ghost:focus {
  background: rgba(255, 255, 255, 0.14);
  border-color: var(--border-primary);
  transform: translateY(-2px);
  color: var(--text-strong);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 17px;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}

.btn:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ===================== 顶部导航 ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(14px);
  background: rgba(11, 17, 32, 0.85);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  box-shadow: var(--shadow-glow);
}

.logo-text {
  font-weight: 800;
  font-size: 20px;
  color: var(--text-strong);
  letter-spacing: 0.5px;
  line-height: 1;
}

.logo-sub {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 2px;
  margin-top: 3px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a:not(.btn) {
  color: var(--text);
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 15px;
  transition: var(--transition);
  white-space: nowrap;
}

.main-nav a:not(.btn):hover {
  color: var(--text-strong);
  background: rgba(79, 140, 255, 0.12);
}

.main-nav a.active {
  color: var(--text-strong);
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.25), rgba(168, 85, 247, 0.2));
  box-shadow: inset 0 0 0 1px var(--border-primary);
}

.nav-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-strong);
  width: 42px;
  height: 42px;
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* ===================== 分类页 Hero ===================== */
.category-hero {
  position: relative;
  min-height: 480px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7, 11, 20, 0.92) 0%, rgba(11, 17, 32, 0.78) 50%, rgba(79, 140, 255, 0.28) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 0;
  max-width: 760px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.25);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.hero-content h1 {
  font-size: 44px;
  font-weight: 900;
  color: var(--text-strong);
  margin: 0 0 16px;
  letter-spacing: 1px;
  line-height: 1.18;
}

.hero-content p {
  font-size: 17px;
  color: #cbd5e1;
  margin: 0 0 30px;
  max-width: 620px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===================== 通用板块 ===================== */
.section-badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.22);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 34px;
  flex-wrap: wrap;
  gap: 14px;
}

.section-header h2 {
  font-size: 30px;
  font-weight: 900;
  color: var(--text-strong);
  margin: 0;
  line-height: 1.3;
}

.section-header p {
  color: var(--text-weak);
  margin: 0;
  font-size: 15px;
}

/* ===================== 今日热点 ===================== */
.hot-section {
  padding: 64px 0 24px;
}

.hot-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  gap: 30px;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  box-shadow: var(--shadow-md);
}

.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.title-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  box-shadow: var(--shadow-glow);
}

.section-title h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-strong);
  margin: 0;
}

.hot-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 560px;
}

.tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(79, 140, 255, 0.1);
  border: 1px solid rgba(79, 140, 255, 0.2);
  color: #93c5fd;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
}

.tag:hover {
  background: rgba(79, 140, 255, 0.25);
  color: #fff;
  transform: translateY(-2px);
  border-color: rgba(79, 140, 255, 0.5);
}

.hot-stats {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  padding: 14px 20px;
  background: var(--bg-panel);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  min-width: 108px;
  transition: var(--transition);
}

.stat-item:hover {
  border-color: var(--border-primary);
  box-shadow: var(--shadow-glow);
}

.stat-num {
  display: block;
  font-size: 24px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1.2;
}

.stat-label {
  display: block;
  font-size: 12px;
  color: var(--text-weak);
  margin-top: 4px;
}

/* ===================== 最新资讯 ===================== */
.news-section {
  padding: 64px 0;
}

.news-grid {
  margin-bottom: 0;
}

.grid-margin-x > .cell {
  margin-bottom: 22px;
}

.news-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-primary);
}

.news-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--bg-deep);
}

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

.news-card:hover .news-cover img {
  transform: scale(1.05);
}

.news-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(6px);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid rgba(0, 229, 255, 0.25);
}

.news-body {
  padding: 20px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-body h3 {
  font-size: 17px;
  font-weight: 800;
  color: var(--text-strong);
  margin: 0 0 10px;
  line-height: 1.5;
  transition: color 0.3s;
}

.news-card:hover .news-body h3 {
  color: #93c5fd;
}

.news-body p {
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.75;
  margin: 0 0 16px;
  flex: 1;
}

.news-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-weak);
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

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

/* ===================== 赛事数据面板 ===================== */
.data-section {
  padding: 70px 0;
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.panel-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  height: 100%;
  transition: var(--transition);
}

.panel-card:hover {
  border-color: var(--border-primary);
}

.panel-card h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-strong);
  margin: 0 0 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-card h3 i {
  color: var(--accent);
}

.tournament-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tournament-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--bg-panel);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.tournament-item:hover {
  border-color: var(--border-primary);
  transform: translateX(4px);
}

.tournament-status {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.12);
  color: var(--success);
  border: 1px solid rgba(34, 197, 94, 0.25);
}

.tournament-status.upcoming {
  background: rgba(245, 158, 11, 0.12);
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.25);
}

.tournament-status.finished {
  background: rgba(148, 163, 184, 0.1);
  color: var(--text-weak);
  border-color: rgba(148, 163, 184, 0.2);
}

.tournament-info {
  flex: 1;
  min-width: 0;
}

.tournament-info h4 {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-strong);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tournament-info p {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--text-weak);
}

.tournament-num {
  font-size: 24px;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.rank-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rank-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: var(--bg-panel);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: var(--transition);
}

.rank-item:hover {
  border-color: var(--border-primary);
}

.rank-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-weak);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}

.rank-item:first-child .rank-num {
  background: linear-gradient(135deg, var(--warning), #fbbf24);
  color: #1a1a1a;
}

.rank-name {
  width: 52px;
  font-weight: 700;
  color: var(--text-strong);
  font-size: 14px;
  flex-shrink: 0;
}

.progress-bar {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}

.progress-bar span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.rank-rate {
  font-weight: 800;
  color: var(--accent);
  font-size: 14px;
  min-width: 40px;
  text-align: right;
  flex-shrink: 0;
}

/* ===================== 深度专题 ===================== */
.feature-section {
  padding: 70px 0;
}

.feature-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  height: 100%;
  min-height: 400px;
  display: flex;
  align-items: flex-end;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-primary);
}

.feature-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.feature-card:hover img {
  transform: scale(1.04);
}

.feature-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.1) 0%, rgba(7, 11, 20, 0.88) 85%);
}

.feature-body {
  position: relative;
  z-index: 2;
  padding: 32px;
}

.feature-label {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
  box-shadow: 0 4px 14px rgba(79, 140, 255, 0.3);
}

.feature-body h3 {
  color: var(--text-strong);
  font-size: 24px;
  font-weight: 900;
  margin: 0 0 10px;
  line-height: 1.4;
}

.feature-body p {
  color: #cbd5e1;
  font-size: 14px;
  line-height: 1.8;
  margin: 0 0 16px;
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
  transition: gap 0.3s;
}

.link-more:hover {
  gap: 10px;
  color: var(--accent);
}

/* ===================== FAQ ===================== */
.faq-section {
  padding: 70px 0;
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
}

.grid-container.narrow {
  max-width: 860px;
}

.custom-accordion {
  background: transparent;
  border: none;
}

.custom-accordion .accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.custom-accordion .accordion-item:hover {
  border-color: var(--border-primary);
}

.custom-accordion .accordion-title {
  background: transparent;
  color: var(--text-strong);
  font-weight: 600;
  font-size: 15px;
  padding: 18px 60px 18px 22px;
  border-bottom: 1px solid transparent;
  line-height: 1.5;
}

.custom-accordion .accordion-title:hover,
.custom-accordion .accordion-title:focus {
  background: rgba(79, 140, 255, 0.06);
  color: var(--text-strong);
}

.custom-accordion .accordion-item.is-active .accordion-title {
  color: var(--accent);
  border-bottom-color: var(--border);
}

.custom-accordion .accordion-content {
  background: transparent;
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.9;
  padding: 20px 22px;
}

/* ===================== CTA 登录引导 ===================== */
.cta-banner {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 90px 0;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(79, 140, 255, 0.88), rgba(168, 85, 247, 0.62));
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.cta-content h2 {
  font-size: 36px;
  font-weight: 900;
  color: #fff;
  margin: 0 0 12px;
  line-height: 1.3;
}

.cta-content p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 17px;
  margin: 0 0 30px;
}

.cta-banner .btn {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.cta-banner .btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.3);
}

/* ===================== 页脚 ===================== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 60px 0 24px;
  color: var(--text-weak);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.footer-brand .logo-text {
  color: var(--text-strong);
}

.footer-brand p {
  margin: 16px 0 0;
  max-width: 360px;
  font-size: 14px;
  line-height: 1.8;
}

.footer-col h4 {
  color: var(--text-strong);
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 16px;
}

.footer-col a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-weak);
  font-size: 14px;
  padding: 6px 0;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
}

/* ===================== 响应式断点 ===================== */
@media (max-width: 1024px) {
  .hero-content h1 {
    font-size: 38px;
  }

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

@media (max-width: 820px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(11, 17, 32, 0.98);
    padding: 18px 20px 22px;
    border-bottom: 1px solid var(--border);
    display: none;
    box-shadow: var(--shadow-lg);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a:not(.btn) {
    padding: 14px 16px;
    border-radius: 12px;
    white-space: normal;
  }

  .main-nav .btn {
    margin-top: 10px;
    justify-content: center;
  }

  .category-hero {
    min-height: 420px;
  }

  .hero-content {
    padding: 56px 0;
  }

  .hero-content h1 {
    font-size: 32px;
  }

  .hero-content p {
    font-size: 15px;
  }

  .hot-panel {
    flex-direction: column;
    align-items: flex-start;
  }

  .hot-stats {
    width: 100%;
  }

  .stat-item {
    flex: 1;
    min-width: 90px;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .feature-card {
    min-height: 340px;
  }

  .feature-body h3 {
    font-size: 20px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    gap: 8px;
  }

  .logo-text {
    font-size: 17px;
  }

  .logo-icon {
    width: 38px;
    height: 38px;
    font-size: 17px;
  }

  .category-hero {
    min-height: 380px;
  }

  .hero-content h1 {
    font-size: 26px;
  }

  .hero-content p {
    font-size: 14px;
  }

  .hero-tags {
    gap: 6px;
  }

  .hero-tag {
    font-size: 12px;
    padding: 5px 10px;
  }

  .btn-lg {
    padding: 14px 26px;
    font-size: 15px;
  }

  .section-header h2 {
    font-size: 24px;
  }

  .hot-panel {
    padding: 22px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .cta-content p {
    font-size: 15px;
  }

  .cta-banner {
    padding: 60px 0;
  }

  .news-body {
    padding: 16px 16px 18px;
  }

  .news-body h3 {
    font-size: 16px;
  }

  .panel-card {
    padding: 20px;
  }
}

@media (max-width: 520px) {
  .logo-sub {
    font-size: 10px;
  }

  .stat-item {
    padding: 12px 12px;
    min-width: 74px;
  }

  .stat-num {
    font-size: 20px;
  }

  .tournament-item {
    flex-wrap: wrap;
  }

  .tournament-info h4 {
    white-space: normal;
  }
}

/* roulang page: category2 */
:root {
  --primary: #7c3aed;
  --primary-dark: #5b21b6;
  --accent: #22d3ee;
  --accent-soft: rgba(34, 211, 238, 0.16);
  --gold: #f59e0b;
  --bg-body: #0b1020;
  --bg-deep: #070b16;
  --bg-card: #111b2e;
  --bg-card-hover: #16223b;
  --bg-panel: #0d1526;
  --text-main: #e2e8f0;
  --text-weak: #94a3b8;
  --text-muted: #64748b;
  --border: rgba(148, 163, 184, 0.14);
  --border-glow: rgba(124, 58, 237, 0.45);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.25);
  --header-height: 74px;
  --section-space: 96px;
  --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  background: var(--bg-body);
  background-image: radial-gradient(ellipse 60% 40% at 70% -10%, rgba(124, 58, 237, 0.15), transparent 70%);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius-md);
}
a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(34, 211, 238, 0.6);
  outline-offset: 2px;
}
ul, ol {
  list-style: none;
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}
strong {
  color: #fff;
}
.grid-container {
  max-width: 1280px;
  padding-left: 24px;
  padding-right: 24px;
}
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(11, 16, 32, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(7, 11, 22, 0.95);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.5);
}
.logo-text {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, #fff, #e0e7ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}
.logo-sub {
  font-weight: 500;
  font-size: 0.78em;
  margin-left: 4px;
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
  background: none;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}
.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-weak);
  padding: 8px 2px;
  position: relative;
  white-space: nowrap;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 0;
  height: 2px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: var(--transition);
}
.main-nav a:hover {
  color: #fff;
}
.main-nav a:hover::after, .main-nav a.active::after {
  width: 100%;
}
.main-nav a.active {
  color: #fff;
  font-weight: 700;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  border-radius: 12px;
  transition: var(--transition);
  letter-spacing: 0.3px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #fff;
  box-shadow: 0 6px 24px rgba(124, 58, 237, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(124, 58, 237, 0.55);
  color: #fff;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.4);
}
.btn-sm {
  padding: 9px 20px;
  font-size: 14px;
}
.btn-lg {
  padding: 15px 36px;
  font-size: 17px;
}
.btn-outline {
  background: transparent;
  border: 1px solid rgba(34, 211, 238, 0.6);
  color: var(--accent);
}
.btn-outline:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: #fff;
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding: calc(var(--header-height) + 80px) 0 80px;
  background: linear-gradient(135deg, rgba(7, 11, 22, 0.92), rgba(17, 27, 46, 0.82)), url("/assets/images/backpic/back-2.png") center / cover no-repeat;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.page-banner::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.28), transparent 70%);
  pointer-events: none;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-weak);
  margin-bottom: 26px;
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb i {
  font-size: 12px;
  opacity: 0.6;
}
.banner-title {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.banner-title span {
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.banner-sub {
  font-size: 17px;
  color: var(--text-weak);
  max-width: 640px;
  line-height: 1.8;
}
.banner-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}
.banner-stat {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: 40px;
  font-size: 14px;
  color: var(--text-weak);
}
.banner-stat i {
  color: var(--accent);
}
.banner-stat strong {
  color: #fff;
  font-size: 16px;
  margin-right: 2px;
}

/* ===== Section Base ===== */
.section {
  padding: var(--section-space) 0;
}
.section-tight {
  padding: 56px 0;
}
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 44px;
}
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 6px 14px;
  border-radius: 40px;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.5px;
}
.section-title em {
  font-style: normal;
  color: var(--accent);
}
.section-desc {
  margin-top: 14px;
  color: var(--text-weak);
  font-size: 15px;
  max-width: 560px;
  line-height: 1.8;
}
.section-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 20px;
  border: 1px solid rgba(34, 211, 238, 0.35);
  border-radius: 40px;
  background: transparent;
  transition: var(--transition);
}
.section-link:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: #fff;
}

/* ===== Filter Tabs ===== */
.filter-wrap {
  margin-bottom: 44px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.filter-btn {
  padding: 9px 22px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-weak);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 40px;
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover {
  color: #fff;
  border-color: rgba(124, 58, 237, 0.5);
}
.filter-btn.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  border-color: transparent;
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
}

/* ===== News Cards ===== */
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}
.news-card:hover {
  transform: translateY(-6px);
  border-color: rgba(124, 58, 237, 0.4);
  box-shadow: var(--shadow-lg);
  background: var(--bg-card-hover);
}
.news-card-media {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.news-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.6s ease;
}
.news-card:hover .news-card-media img {
  transform: scale(1.06);
}
.news-card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(17, 27, 46, 0.6), transparent 50%);
}
.news-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  padding: 6px 14px;
  border-radius: 40px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
  color: #fff;
  background: rgba(124, 58, 237, 0.85);
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}
.news-tag.hot {
  background: rgba(245, 158, 11, 0.9);
}
.news-tag.match {
  background: rgba(34, 211, 238, 0.85);
}
.news-card-body {
  padding: 22px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-date {
  font-size: 13px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
}
.news-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 12px;
  color: #f1f5f9;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: var(--transition);
}
.news-card:hover .news-title {
  color: #fff;
}
.news-excerpt {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 18px;
}
.news-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}
.news-views {
  font-size: 13px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.read-more {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.read-more i {
  transition: transform var(--transition);
}
.read-more:hover i {
  transform: translateX(4px);
}

/* ===== Data Panel / Bracket ===== */
.data-panel {
  background: linear-gradient(135deg, rgba(7, 11, 22, 0.94), rgba(13, 21, 38, 0.88)), url("/assets/images/backpic/back-3.png") center / cover no-repeat;
  border: 1px solid rgba(124, 58, 237, 0.35);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
}
.data-panel::before {
  content: "";
  position: absolute;
  top: -80px;
  left: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.2), transparent 70%);
  pointer-events: none;
}
.panel-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 6px;
}
.panel-sub {
  font-size: 14px;
  color: var(--text-weak);
  margin-bottom: 34px;
}
.panel-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stat-card {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 18px;
  text-align: center;
  backdrop-filter: blur(4px);
  transition: var(--transition);
}
.stat-card:hover {
  border-color: rgba(34, 211, 238, 0.5);
  background: rgba(34, 211, 238, 0.05);
  transform: translateY(-3px);
}
.stat-num {
  font-size: 32px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-label {
  font-size: 13px;
  color: var(--text-weak);
  margin-top: 6px;
}
.bracket-wrap {
  margin-top: 40px;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding-top: 40px;
}
.bracket-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}
.bracket-head i {
  color: var(--gold);
}
.bracket-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 14px;
  align-items: center;
}
.bracket-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.bracket-team {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.bracket-team:hover {
  background: rgba(124, 58, 237, 0.12);
  border-color: rgba(124, 58, 237, 0.5);
}
.bracket-team img {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg-panel);
}
.bracket-team.win {
  border-color: rgba(245, 158, 11, 0.5);
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.12);
}
.bracket-vs {
  color: var(--text-muted);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 1px;
  text-align: center;
}
.bracket-arrow {
  display: flex;
  justify-content: center;
  color: rgba(148, 163, 184, 0.5);
  font-size: 20px;
}

/* ===== Timeline ===== */
.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--accent), transparent);
  border-radius: 4px;
}
.timeline-item {
  position: relative;
  padding-bottom: 34px;
}
.timeline-item:last-child {
  padding-bottom: 0;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 10px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-body);
  border: 3px solid var(--primary);
  box-shadow: 0 0 0 5px rgba(124, 58, 237, 0.15);
}
.timeline-item.next::before {
  border-color: var(--accent);
  box-shadow: 0 0 0 5px rgba(34, 211, 238, 0.15);
}
.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  transition: var(--transition);
}
.timeline-content:hover {
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}
.timeline-date {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
}
.timeline-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}
.timeline-status {
  font-size: 13px;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.timeline-status i {
  color: var(--gold);
}

/* ===== Community ===== */
.community-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: var(--transition);
  height: 100%;
}
.community-card:hover {
  border-color: rgba(34, 211, 238, 0.4);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.community-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.community-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 40px;
  background: rgba(124, 58, 237, 0.15);
  color: #c4b5fd;
  border: 1px solid rgba(124, 58, 237, 0.3);
}
.community-badge.trend {
  background: rgba(245, 158, 11, 0.12);
  color: var(--gold);
  border-color: rgba(245, 158, 11, 0.3);
}
.community-heat {
  font-size: 13px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.community-heat i {
  color: #f43f5e;
}
.community-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  color: #f1f5f9;
}
.community-desc {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.community-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
  padding-top: 14px;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}
.community-footer span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(124, 58, 237, 0.4);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary i {
  color: var(--accent);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item[open] summary i {
  transform: rotate(45deg);
}
.faq-item[open] {
  border-color: rgba(34, 211, 238, 0.35);
  box-shadow: var(--shadow-sm);
}
.faq-answer {
  padding: 0 24px 22px;
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.85;
  border-top: 1px solid rgba(148, 163, 184, 0.08);
  padding-top: 16px;
  margin-top: 0;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 90px 0;
  background: linear-gradient(135deg, rgba(91, 33, 182, 0.82), rgba(13, 21, 38, 0.95)), url("/assets/images/backpic/back-1.png") center / cover no-repeat;
  border-top: 1px solid rgba(124, 58, 237, 0.35);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: "";
  position: absolute;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(34, 211, 238, 0.18), transparent 70%);
  pointer-events: none;
}
.cta-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
}
.cta-desc {
  font-size: 16px;
  color: rgba(226, 232, 240, 0.85);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.cta-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.cta-note {
  margin-top: 20px;
  font-size: 13px;
  color: rgba(148, 163, 184, 0.8);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 40px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
  margin-top: 18px;
  max-width: 340px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.footer-col a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-weak);
  font-size: 14px;
  padding: 6px 0;
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-col a i {
  width: 18px;
  text-align: center;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-col a:hover i {
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding: 22px 0;
  text-align: center;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
  :root {
    --section-space: 72px;
  }
  .grid-container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .panel-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .bracket-grid {
    grid-template-columns: 1fr auto 1fr;
  }
  .bracket-col.hide-md {
    display: none;
  }
}
@media screen and (max-width: 768px) {
  :root {
    --header-height: 64px;
    --section-space: 56px;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .main-nav {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: min(320px, 82vw);
    height: calc(100vh - var(--header-height));
    flex-direction: column;
    align-items: stretch;
    background: rgba(7, 11, 22, 0.98);
    backdrop-filter: blur(24px);
    padding: 28px 22px;
    gap: 6px;
    border-left: 1px solid var(--border);
    box-shadow: -16px 0 40px rgba(0, 0, 0, 0.5);
    transition: right 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    z-index: 999;
  }
  .main-nav.open {
    right: 0;
  }
  .main-nav a {
    font-size: 17px;
    padding: 14px 10px;
    border-radius: 10px;
    text-align: center;
  }
  .main-nav a::after {
    display: none;
  }
  .main-nav a.active {
    background: rgba(124, 58, 237, 0.15);
  }
  .main-nav .btn {
    margin-top: 16px;
    width: 100%;
    justify-content: center;
  }
  .page-banner {
    padding: calc(var(--header-height) + 48px) 0 56px;
    text-align: center;
  }
  .breadcrumb {
    justify-content: center;
  }
  .banner-sub {
    margin-left: auto;
    margin-right: auto;
  }
  .banner-meta {
    justify-content: center;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .data-panel {
    padding: 32px 20px;
  }
  .bracket-wrap {
    overflow-x: auto;
  }
  .bracket-grid {
    min-width: 560px;
  }
}
@media screen and (max-width: 520px) {
  .grid-container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .logo-text {
    font-size: 18px;
  }
  .logo-icon {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }
  .page-banner {
    padding-top: calc(var(--header-height) + 40px);
  }
  .banner-title {
    font-size: 30px;
  }
  .banner-stat {
    padding: 8px 14px;
    font-size: 13px;
  }
  .panel-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .stat-card {
    padding: 16px 10px;
  }
  .stat-num {
    font-size: 24px;
  }
  .news-title {
    font-size: 16px;
  }
  .community-card {
    padding: 20px;
  }
  .faq-item summary {
    padding: 16px 18px;
    font-size: 15px;
  }
  .faq-answer {
    padding: 0 18px 18px;
  }
  .cta-btns {
    flex-direction: column;
    align-items: center;
  }
}