/* 黑金主题样式 - main.css */
:root{
  --bg:#0b0b0b;
  --card:#0f0f0f;
  --gold:#d4af37;
  --muted:#bdbdbd;
  --accent:#222;
  --maxw:1200px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: "Microsoft YaHei", Arial, sans-serif;
  background:linear-gradient(180deg,#050505 0%, #0b0b0b 100%);
  color:#eee;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* layout */
.wrap{width:90%;max-width:var(--maxw);margin:0 auto}

/* header */
.site-header{background:linear-gradient(90deg,#070707, rgba(10,10,10,0.6));border-bottom:1px solid rgba(212,175,55,0.06);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:18px 0}
.logo{font-weight:800;font-size:1.6rem;color:var(--gold)}
.logo span{color:#fff;margin-left:6px;font-weight:400;font-size:1rem}

/* nav */
.nav a, .nav button{color:#ddd;margin-left:18px;font-weight:600;background:transparent;border:0;cursor:pointer}
.nav{display:flex;align-items:center}
.btn{padding:8px 14px;border-radius:6px;font-weight:700;border:1px solid transparent;cursor:pointer}
.btn-gold{background:linear-gradient(180deg,var(--gold), #b3892a);color:#0b0b0b;border:1px solid rgba(255,255,255,0.06)}
.btn-ghost{background:transparent;color:#ddd;border:1px solid rgba(255,255,255,0.02)}

/* hero */
.hero{padding:60px 0;display:flex;align-items:center}
.hero-inner{display:flex;gap:36px;align-items:center}
.hero-text{flex:1}
.hero-text h1{font-size:2.2rem;margin-bottom:12px;color:#fff;letter-spacing:0.5px}
.hero-text p{color:var(--muted);margin-bottom:18px}
.hero-media{flex:1;text-align:right}
.hero-media img{max-width:95%;border-radius:8px;box-shadow:0 8px 30px rgba(0,0,0,0.6)}

/* sections */
.section{padding:48px 0}
.section.dark{background:linear-gradient(180deg, rgba(0,0,0,0.2), rgba(0,0,0,0.3));border-top:1px solid rgba(255,255,255,0.02)}

/* titles */
.section-title{font-size:1.4rem;color:var(--gold);margin-bottom:18px}

/* cards grid */
.cards{display:flex;gap:18px;flex-wrap:wrap}
.card{background:var(--card);border-radius:8px;overflow:hidden;flex:1;min-width:260px;max-width:360px;box-shadow:0 6px 20px rgba(0,0,0,0.6);transition:transform .18s}
.card img{width:100%;height:160px;object-fit:cover;display:block}
.card-body{padding:16px}
.card h3{margin:0 0 8px 0;color:#fff;font-size:1.05rem}
.card p{color:var(--muted);margin:0;font-size:0.95rem}
.card:hover{transform:translateY(-6px)}

/* features grid */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-top:12px}
.feature{background:var(--card);padding:12px;border-radius:8px;text-align:center;box-shadow:0 6px 18px rgba(0,0,0,0.55)}
.feature img{width:100%;height:140px;object-fit:cover;border-radius:6px;margin-bottom:10px}
.feature h4{color:var(--gold);margin:6px 0}

/* promos */
.promo-list{display:flex;gap:18px;flex-wrap:wrap}
.promo-item{background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.2));padding:18px;border-radius:8px;min-width:220px;flex:1}
.promo-item h3{margin:0 0 6px 0;color:#fff}

/* about */
.about-inner{display:flex;gap:24px;align-items:center;flex-wrap:wrap}
.about-text{flex:1}
.about-media{flex:1;text-align:right}
.about-media img{width:100%;border-radius:8px;box-shadow:0 8px 20px rgba(0,0,0,0.6)}
.about-list{display:flex;gap:12px;margin-top:12px;flex-wrap:wrap}
.about-list li{background:rgba(255,255,255,0.03);padding:10px 12px;border-radius:6px;color:var(--muted)}

/* cta */
.cta{padding:36px 0;text-align:center}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.cta-inner h2{color:#fff;margin:0}

/* footer */
.site-footer{border-top:1px solid rgba(255,255,255,0.03);padding:24px 0;margin-top:28px;color:var(--muted)}

/* modal */
.modal{position:fixed;inset:0;background:rgba(0,0,0,0.7);display:none;align-items:center;justify-content:center;z-index:200}
.modal[aria-hidden="false"]{display:flex}
.modal-card{width:360px;background:linear-gradient(180deg,#0f0f0f,#151515);padding:18px;border-radius:8px;box-shadow:0 16px 40px rgba(0,0,0,0.7);position:relative}
.modal-close{position:absolute;right:10px;top:8px;background:transparent;border:0;color:#999;font-size:20px;cursor:pointer}
.modal-card h3{margin:0 0 12px 0;color:var(--gold)}
.modal-card form input{width:100%;padding:10px;margin:8px 0;border-radius:6px;border:1px solid rgba(255,255,255,0.06);background:#0b0b0b;color:#fff}
.modal-card .muted{color:var(--muted);font-size:0.9rem;margin-top:10px;text-align:center}

/* responsive */
@media (max-width:900px){
  .hero-inner{flex-direction:column-reverse;text-align:center}
  .hero-media img{max-width:80%}
  .nav a{display:none}
  .nav button{margin-left:8px}
  .header-inner{padding:12px 0}
  .cta-inner{flex-direction:column}
}