/* ============================================================
   主题 20 · 水晶透明 (Crystal Clear)
   透明水晶质感，棱镜光谱效果如折射光影静物摄影集
   ============================================================ */
:root{
  --c-bg:#0a0f1a;
  --c-bg-grad:radial-gradient(circle at 18% 14%,rgba(6,182,212,.20),transparent 45%),
              radial-gradient(circle at 82% 22%,rgba(167,139,250,.16),transparent 45%),
              radial-gradient(circle at 50% 95%,rgba(34,211,238,.13),transparent 50%),
              linear-gradient(165deg,#0a0f1a,#141c2e);
  --c-surface:rgba(20,28,46,.70);
  --c-surface-2:rgba(30,40,62,.58);
  --c-text:#eaf6ff;
  --c-muted:#8ea8c4;
  --c-accent:#06b6d4;
  --c-accent-2:#a78bfa;
  --c-on-accent:#0a0f1a;
  --c-border:rgba(6,182,212,.16);
  --font-display:'Trebuchet MS','PingFang SC',sans-serif;
  --hero-grad:linear-gradient(115deg,#06b6d4,#a78bfa 45%,#22d3ee);
  --nav-bg:rgba(10,15,26,.60);
  --nav-blur:blur(18px);
  --shadow:0 22px 55px rgba(6,182,212,.30);
  --radius:18px;
}
/* 棱镜光谱层 —— 七彩光谱条带旋转折射 */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    linear-gradient(60deg,transparent 38%,rgba(6,182,212,.16) 42%,transparent 46%),
    linear-gradient(60deg,transparent 48%,rgba(167,139,250,.14) 52%,transparent 56%),
    linear-gradient(60deg,transparent 58%,rgba(34,211,238,.12) 62%,transparent 66%),
    radial-gradient(55% 45% at 50% 12%,rgba(94,234,212,.14),transparent 70%);
  background-size:260% 100%,260% 100%,260% 100%,100% 100%;
  filter:blur(8px);
  animation:crystalRefract 16s linear infinite;
}
@keyframes crystalRefract{
  0%{background-position:0% 0,0% 0,0% 0,0 0}
  100%{background-position:260% 0,260% 0,260% 0,0 0}
}
/* 标题：纤细字重 + 渐变流光闪烁 */
.hero h1{font-weight:300;letter-spacing:-1.5px}
.hero h1 .grad{
  background:linear-gradient(115deg,#06b6d4,#a78bfa 40%,#22d3ee 70%,#06b6d4);
  background-size:220% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
  font-weight:800;animation:crystalShimmer 7s linear infinite;
}
@keyframes crystalShimmer{to{background-position:220% center}}
/* 玻璃质感卡片 */
.album-card{backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(6,182,212,.18)}
.album-card:hover{box-shadow:0 0 0 1px rgba(167,139,250,.45),0 34px 70px rgba(6,182,212,.40);border-color:rgba(167,139,250,.50)}
.album-info{background:rgba(18,26,44,.50)}
.album-info h3{font-weight:600}
.album-badge{background:linear-gradient(115deg,#06b6d4,#a78bfa);color:#0a0f1a;border:none}
.album-meta{border-top-color:rgba(6,182,212,.14)}
.album-meta .view{color:#22d3ee}
.section-head .kicker{background:linear-gradient(115deg,#06b6d4,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:5px}
.about-visual{background:linear-gradient(135deg,#155e75,#06b6d4 50%,#a78bfa);background-size:200% auto;animation:crystalShimmer 9s linear infinite;box-shadow:0 0 60px rgba(6,182,212,.40)}
.eyebrow{background:linear-gradient(115deg,#06b6d4,#a78bfa,#22d3ee) !important;color:#0a0f1a !important;letter-spacing:3px}
.btn.primary{background:linear-gradient(115deg,#06b6d4,#a78bfa);color:#0a0f1a;box-shadow:0 12px 30px rgba(6,182,212,.45)}
.btn.ghost{background:rgba(255,255,255,.05);color:#eaf6ff;border-color:rgba(6,182,212,.22)}
.divider{background:linear-gradient(115deg,#06b6d4,#a78bfa)}
.footer{background:#040810;border-top:1px solid rgba(6,182,212,.10)}
.logo-mark{box-shadow:0 6px 24px rgba(6,182,212,.55)}
.nav-menu a:hover{color:#06b6d4;background:rgba(6,182,212,.10)}
.ts-swatch.ts-crystal{background:linear-gradient(135deg,#06b6d4,#22d3ee,#a78bfa)}
.shape.s1{background:#06b6d4 !important;opacity:.22 !important}
.shape.s2{background:#a78bfa !important;opacity:.20 !important}