/* ============================================================
   主题 N7 · 冰晶透明 (Ice Crystal)
   深蓝夜底缀冰蓝·霜白，冰晶纹理清冷高贵，如冰雪极地影像集
   ============================================================ */
:root{
  --c-bg:#0a1a2a;
  --c-bg-grad:radial-gradient(circle at 18% 14%,rgba(0,180,216,.22),transparent 45%),
              radial-gradient(circle at 82% 22%,rgba(144,224,239,.16),transparent 45%),
              radial-gradient(circle at 50% 95%,rgba(0,180,216,.13),transparent 50%),
              linear-gradient(165deg,#0a1a2a,#0e2236);
  --c-surface:rgba(22,42,64,.72);
  --c-surface-2:rgba(30,54,80,.60);
  --c-text:#eef9ff;
  --c-muted:#8fb4c8;
  --c-accent:#00b4d8;
  --c-accent-2:#90e0ef;
  --c-on-accent:#0a1a2a;
  --c-border:rgba(0,180,216,.18);
  --font-display:'Trebuchet MS','PingFang SC',sans-serif;
  --hero-grad:linear-gradient(115deg,#00b4d8,#90e0ef 50%,#caf0f8);
  --nav-bg:rgba(10,26,42,.60);
  --nav-blur:blur(18px);
  --shadow:0 22px 55px rgba(0,180,216,.30);
  --radius:18px;
}
/* 冰晶闪烁层 —— 霜蓝晶点错落明灭 */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 14% 18%,rgba(202,240,248,.60) 2px,transparent 3px),
    radial-gradient(circle at 32% 12%,rgba(144,224,239,.50) 1.5px,transparent 2.5px),
    radial-gradient(circle at 26% 26%,rgba(202,240,248,.45) 2px,transparent 3px),
    radial-gradient(circle at 44% 18%,rgba(144,224,239,.40) 1.5px,transparent 2.5px),
    radial-gradient(circle at 68% 14%,rgba(202,240,248,.50) 2px,transparent 3px),
    radial-gradient(circle at 84% 24%,rgba(144,224,239,.42) 1.5px,transparent 2.5px),
    radial-gradient(circle at 76% 30%,rgba(202,240,248,.38) 1.5px,transparent 2.5px);
  background-size:260px 260px,240px 240px,280px 280px,220px 220px,300px 300px,250px 250px,270px 270px;
  opacity:.6;
  animation:iceTwinkle 4s ease-in-out infinite alternate;
}
@keyframes iceTwinkle{
  0%{opacity:.35;transform:scale(1)}
  100%{opacity:.7;transform:scale(1.04)}
}
/* 标题：冰蓝渐变流光 */
.hero h1{font-weight:300;letter-spacing:-1.5px}
.hero h1 .grad{
  background:linear-gradient(115deg,#00b4d8,#90e0ef 40%,#caf0f8 70%,#90e0ef);
  background-size:220% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
  font-weight:800;animation:iceShimmer 6s linear infinite;
}
@keyframes iceShimmer{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(144,224,239,.20)}
.album-card:hover{box-shadow:0 0 0 1px rgba(202,240,248,.45),0 34px 70px rgba(0,180,216,.40);border-color:rgba(202,240,248,.50);transform:translateY(-6px)}
.album-info{background:rgba(18,34,52,.50)}
.album-info h3{font-weight:600}
.album-badge{background:linear-gradient(115deg,#00b4d8,#90e0ef);color:#0a1a2a;border:none}
.album-meta{border-top-color:rgba(0,180,216,.14)}
.album-meta .view{color:#90e0ef}
.section-head .kicker{background:linear-gradient(115deg,#00b4d8,#90e0ef);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:5px}
.about-visual{background:linear-gradient(135deg,#005c72,#00b4d8 50%,#90e0ef);background-size:200% auto;animation:iceShimmer 9s linear infinite;box-shadow:0 0 60px rgba(0,180,216,.40)}
.eyebrow{background:linear-gradient(115deg,#00b4d8,#90e0ef) !important;color:#0a1a2a !important;letter-spacing:3px}
.btn.primary{background:linear-gradient(115deg,#00b4d8,#90e0ef);color:#0a1a2a;box-shadow:0 12px 30px rgba(0,180,216,.45)}
.btn.ghost{background:rgba(255,255,255,.05);color:#eef9ff;border-color:rgba(144,224,239,.22)}
.divider{background:linear-gradient(115deg,#00b4d8,#90e0ef)}
.footer{background:#04101a;border-top:1px solid rgba(0,180,216,.10)}
.logo-mark{box-shadow:0 6px 24px rgba(144,224,239,.55)}
.nav-menu a:hover{color:#90e0ef;background:rgba(0,180,216,.10)}
.ts-swatch.ts-ice{background:linear-gradient(135deg,#00b4d8,#90e0ef)}
.shape.s1{background:#00b4d8 !important;opacity:.22 !important}
.shape.s2{background:#90e0ef !important;opacity:.20 !important}