:root{ --bg:#0b1220; --card:#0f172a; --text:#e5e7eb; --muted:#9ca3af; --accent:#60a5fa; --border:#1f2937; }
:root[data-theme='light']{ --bg:#f8fafc; --card:#fff; --text:#0f172a; --muted:#475569; --accent:#2563eb; --border:#e5e7eb; }
*{box-sizing:border-box} html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",Arial}
a{color:var(--accent);text-decoration:none} .container{width:min(1200px,92%);margin:0 auto}

.site-header{position:sticky;top:0;backdrop-filter:blur(8px);background:color-mix(in oklab,var(--bg),transparent 35%);border-bottom:1px solid var(--border);z-index:20}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:700;letter-spacing:.4px}
.nav a{margin-right:16px}.btn-theme{background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:10px;padding:8px 10px;cursor:pointer}
.btn{display:inline-block;padding:10px 16px;border-radius:12px;background:var(--accent);color:#fff}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.btn.small{padding:6px 10px;border-radius:10px;font-size:12px}

.hero{display:grid;grid-template-columns:1.15fr 1fr;gap:32px;align-items:center;padding:42px 0}
.hero-text .hello{color:var(--muted);font-size:14px;letter-spacing:.2em}
.hero-text h1{font-size:clamp(28px,3.5vw,46px);margin:.2em 0 .3em}
.grad{background:linear-gradient(135deg,#60a5fa,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-text .sub{color:var(--muted)} .actions{margin-top:18px;display:flex;gap:12px}
.chips{margin-top:16px;display:flex;gap:10px;flex-wrap:wrap}
.chip{font-size:12px;color:var(--text);background:color-mix(in oklab,var(--card),#000 6%);border:1px solid var(--border);padding:6px 12px;border-radius:9999px}
.chip.active{border-color:var(--accent);box-shadow:0 0 0 2px color-mix(in oklab,var(--accent),transparent 70%) inset}
.hero-card{height:220px;border-radius:18px;background:linear-gradient(135deg,#0ea5e9,#7c3aed);box-shadow:0 20px 40px rgba(0,0,0,.35)}

.works{padding:22px 0 60px} .section-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.section-title h2{margin:0;font-size:22px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{display:block;background:var(--card);border:1px solid var(--border);border-radius:16px;overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.25)}
.thumb{aspect-ratio:16/9;background-size:cover;background-position:center}
.card-body{padding:12px 14px}
.kicker{color:var(--muted);font-size:12px;margin-bottom:4px}
.card .title{margin:0 0 6px;font-size:16px}
.card .excerpt{margin:0;color:var(--muted);font-size:13px;min-height:2.6em}
.meta{display:flex;gap:10px;padding:10px 14px 14px;color:var(--muted);font-size:12px}
.empty{grid-column:1/-1;text-align:center;color:var(--muted);padding:24px;border:1px dashed var(--border);border-radius:16px}

.about,.contact,.clients{padding:32px 0 60px}
.about .cols{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;align-items:center}
.avatar.square{--avatar-size:260px;width:var(--avatar-size);height:var(--avatar-size);border-radius:18px;background:linear-gradient(120deg,#60a5fa33,#a78bfa33);border:1px solid var(--border)}
.stack span{display:inline-block;font-size:12px;margin-right:8px;border:1px solid var(--border);border-radius:10px;padding:4px 8px;color:var(--muted)}

/* clients: horizontal row with variable width logos; image height fixed 180, width auto */
.clients .logo-grid{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
  align-items:center;
}
.logo{
  display:block;
  height:60px;        /* container adapts to image height */
  line-height:0;       /* remove gaps */
}
.logo img{
  height:60px;        /* fixed height */
  width:auto;          /* adaptive width by aspect */
  max-width:100%;
  opacity:.85;
  filter:grayscale(1);
  transition:filter .2s,opacity .2s;
}
.logo:hover img{ filter:none; opacity:1; }
.work-detail{padding:28px 0 60px}
.work-detail h1{margin:10px 0 8px}
.work-meta{color:var(--muted)}
.gallery{display:grid;gap:12px}
.gallery figure{margin:0}
@media (min-width:901px){
 .work-detail .gallery img,.work-detail .gallery video{max-height:86vh;object-fit:contain}
}
.work-detail .gallery img,.work-detail .gallery video{width:100%;height:auto;border:1px solid var(--border);border-radius:14px;background:#000}
.content-body{margin-top:16px;line-height:1.75;color:var(--text)}

.site-footer{border-top:1px solid var(--border);padding:16px 0;color:var(--muted)}

@media (max-width:900px){
 .hero{grid-template-columns:1fr}
 .grid{grid-template-columns:1fr 1fr}
 .about .cols{grid-template-columns:1fr}
 .clients .logo-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:600px){
 .grid{grid-template-columns:1fr}
 .clients .logo-grid{grid-template-columns:repeat(2,1fr)}
}
/* v2.4.4 — 强制修复：作品详情 PNG 透明 + 统一大小上限 */
.work-detail .gallery img{
  background:transparent !important;
  max-height:75vh !important;
  object-fit:contain !important;
}
.work-detail .gallery video{
  background:#000 !important;
  max-height:75vh !important;
  object-fit:contain !important;
}


/* v2.4.5 — 首页右侧主图支持上传图片 */
.hero-card-img{ width:100%; height:auto; display:block; border-radius:18px; box-shadow:0 20px 40px rgba(0,0,0,.35); }

.contact .links p{ margin:.5em 0; }