/* 开云体育 - 全局样式 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#c8a045;
  --primary-dark:#a8862e;
  --bg-dark:#0d1117;
  --bg-card:#161b22;
  --bg-section:#1c2333;
  --text:#e6edf3;
  --text-muted:#8b949e;
  --border:#30363d;
  --accent:#238636;
  --radius:8px;
  --shadow:0 4px 24px rgba(0,0,0,.4);
  --max-w:1200px;
  --header-h:72px;
}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg-dark);
  color:var(--text);
  line-height:1.7;
  min-height:100vh;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:#e8c96a}
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(13,17,23,.95);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  height:var(--header-h);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--header-h);
}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;color:var(--text)}
.logo img{width:44px;height:44px;border-radius:8px;object-fit:cover}
.nav-desktop{display:flex;align-items:center;gap:6px}
.nav-desktop a{
  color:var(--text-muted);padding:8px 14px;border-radius:var(--radius);
  font-size:.9rem;white-space:nowrap;
}
.nav-desktop a:hover,.nav-desktop a.active{color:var(--primary);background:rgba(200,160,69,.08)}
.header-actions{display:flex;align-items:center;gap:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 22px;border-radius:var(--radius);font-size:.9rem;font-weight:600;
  border:none;cursor:pointer;transition:all .2s;
}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#0d1117}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(200,160,69,.35);color:#0d1117}
.btn-outline{background:transparent;border:1px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:rgba(200,160,69,.1)}
.btn-sm{padding:7px 16px;font-size:.85rem}

/* Hamburger */
.hamburger{
  display:none;flex-direction:column;gap:5px;
  background:none;border:none;cursor:pointer;padding:8px;
}
.hamburger span{
  display:block;width:24px;height:2px;background:var(--text);
  transition:all .3s;border-radius:2px;
}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.nav-mobile{
  display:none;position:fixed;top:var(--header-h);left:0;right:0;
  background:var(--bg-card);border-bottom:1px solid var(--border);
  padding:16px 20px;z-index:999;flex-direction:column;gap:4px;
  box-shadow:var(--shadow);
}
.nav-mobile.open{display:flex}
.nav-mobile a{
  color:var(--text);padding:12px 16px;border-radius:var(--radius);
  font-size:1rem;border-bottom:1px solid var(--border);
}
.nav-mobile a:hover{background:rgba(200,160,69,.08);color:var(--primary)}
.nav-mobile .mobile-actions{display:flex;gap:10px;padding-top:12px}
.nav-mobile .mobile-actions .btn{flex:1}

@media(max-width:900px){
  .nav-desktop,.header-actions{display:none}
  .hamburger{display:flex}
}

/* Hero */
.hero{
  padding:60px 0 50px;
  background:linear-gradient(180deg,#1a2030 0%,var(--bg-dark) 100%);
  border-bottom:1px solid var(--border);
}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.hero h1{font-size:2.2rem;line-height:1.3;margin-bottom:16px;color:#fff}
.hero h1 span{color:var(--primary)}
.hero-desc{font-size:1.05rem;color:var(--text-muted);margin-bottom:28px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-img{border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
@media(max-width:768px){
  .hero{padding:40px 0}
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero h1{font-size:1.6rem}
  .hero-btns{justify-content:center}
  .hero-img{order:-1}
}

/* Sections */
section{padding:56px 0}
.section-title{
  font-size:1.75rem;text-align:center;margin-bottom:12px;color:#fff;
}
.section-subtitle{
  text-align:center;color:var(--text-muted);margin-bottom:40px;max-width:640px;margin-left:auto;margin-right:auto;
}
.bg-alt{background:var(--bg-section)}

/* Feature cards */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.feature-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:12px;
  padding:28px 24px;transition:transform .2s,border-color .2s;
}
.feature-card:hover{transform:translateY(-4px);border-color:var(--primary)}
.feature-card img{width:64px;height:64px;border-radius:10px;margin-bottom:16px;object-fit:cover}
.feature-card h3{font-size:1.1rem;margin-bottom:10px;color:#fff}
.feature-card p{color:var(--text-muted);font-size:.92rem}

/* Game categories */
.games-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:16px}
.game-item{
  background:var(--bg-card);border:1px solid var(--border);border-radius:12px;
  overflow:hidden;text-align:center;transition:all .2s;
}
.game-item:hover{border-color:var(--primary);transform:translateY(-3px)}
.game-item img{width:100%;height:120px;object-fit:cover}
.game-item span{display:block;padding:12px;font-size:.9rem;color:var(--text)}

/* Partners */
.partners-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:20px;align-items:center}
.partners-grid img{
  max-height:60px;width:auto;margin:0 auto;opacity:.75;
  filter:grayscale(30%);transition:all .2s;
}
.partners-grid img:hover{opacity:1;filter:none}

/* Content article */
.content-section{max-width:860px;margin:0 auto}
.content-section h2{font-size:1.5rem;color:#fff;margin:36px 0 16px;padding-bottom:8px;border-bottom:2px solid var(--primary)}
.content-section h3{font-size:1.2rem;color:var(--primary);margin:28px 0 12px}
.content-section p{margin-bottom:16px;color:var(--text-muted);text-align:justify}
.content-section ul,.content-section ol{margin:0 0 16px 24px;color:var(--text-muted)}
.content-section li{margin-bottom:8px}
.content-section strong{color:var(--text)}

/* FAQ */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  margin-bottom:12px;overflow:hidden;
}
.faq-q{
  width:100%;text-align:left;background:none;border:none;color:#fff;
  padding:18px 20px;font-size:1rem;cursor:pointer;display:flex;
  justify-content:space-between;align-items:center;font-family:inherit;
}
.faq-q::after{content:"+";font-size:1.3rem;color:var(--primary);transition:transform .2s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{display:none;padding:0 20px 18px;color:var(--text-muted);font-size:.95rem}
.faq-item.open .faq-a{display:block}

/* Steps */
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
.step-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:12px;
  padding:24px;text-align:center;position:relative;
}
.step-num{
  width:40px;height:40px;background:var(--primary);color:#0d1117;
  border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:700;margin:0 auto 14px;font-size:1.1rem;
}

/* Page header (subpages) */
.page-header{
  padding:48px 0 32px;
  background:linear-gradient(180deg,#1a2030,var(--bg-dark));
  border-bottom:1px solid var(--border);text-align:center;
}
.page-header h1{font-size:2rem;color:#fff;margin-bottom:10px}
.page-header p{color:var(--text-muted);max-width:600px;margin:0 auto}

/* Breadcrumb */
.breadcrumb{padding:16px 0;font-size:.85rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 8px}

/* Auth pages */
.auth-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;padding:40px 0 60px}
.auth-form{
  background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:32px;
}
.auth-form h2{font-size:1.4rem;color:#fff;margin-bottom:20px}
.form-group{margin-bottom:18px}
.form-group label{display:block;margin-bottom:6px;font-size:.9rem;color:var(--text-muted)}
.form-group input{
  width:100%;padding:12px 14px;background:var(--bg-dark);border:1px solid var(--border);
  border-radius:var(--radius);color:var(--text);font-size:.95rem;
}
.form-group input:focus{outline:none;border-color:var(--primary)}
.auth-side img{border-radius:12px;box-shadow:var(--shadow)}
.auth-side .content-section h2,.auth-side .content-section h3{text-align:left}
@media(max-width:768px){
  .auth-grid{grid-template-columns:1fr}
}

/* Error pages */
.error-page{
  min-height:70vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:40px 20px;
}
.error-page h1{font-size:5rem;color:var(--primary);line-height:1}
.error-page h2{font-size:1.5rem;color:#fff;margin:16px 0}
.error-page p{color:var(--text-muted);margin-bottom:28px}

/* Footer */
.site-footer{
  background:var(--bg-card);border-top:1px solid var(--border);padding:48px 0 24px;margin-top:40px;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand img{width:48px;border-radius:8px;margin-bottom:12px}
.footer-brand p{color:var(--text-muted);font-size:.88rem;line-height:1.6}
.footer-col h4{color:#fff;font-size:.95rem;margin-bottom:14px}
.footer-col a{display:block;color:var(--text-muted);font-size:.88rem;padding:4px 0}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--border);padding-top:20px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
}
.footer-bottom p{color:var(--text-muted);font-size:.82rem}
@media(max-width:768px){
  .footer-grid{grid-template-columns:1fr 1fr}
}

/* CTA banner */
.cta-banner{
  background:linear-gradient(135deg,#1a2744,#0d1117);
  border:1px solid var(--border);border-radius:16px;
  padding:40px;text-align:center;margin:40px 0;
}
.cta-banner h2{color:#fff;margin-bottom:12px}
.cta-banner p{color:var(--text-muted);margin-bottom:24px}

/* Promo cards */
.promo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.promo-card{border-radius:12px;overflow:hidden;border:1px solid var(--border);background:var(--bg-card)}
.promo-card img{width:100%;height:180px;object-fit:cover}
.promo-card .promo-body{padding:20px}
.promo-card h3{font-size:1.05rem;color:#fff;margin-bottom:8px}
.promo-card p{font-size:.88rem;color:var(--text-muted)}