/* ============================================================
   主题 N1 · 新年风格 (New Year Sparkle)
   红金配色映深红夜空，烟花绽放粒粒生辉，喜庆华丽如新年灯影集
   ============================================================ */
:root{
  --c-bg:#1a0a0a;
  --c-bg-grad:radial-gradient(circle at 18% 16%,rgba(255,23,68,.22),transparent 45%),
              radial-gradient(circle at 82% 22%,rgba(255,215,0,.16),transparent 45%),
              radial-gradient(circle at 50% 95%,rgba(255,23,68,.12),transparent 50%),
              linear-gradient(165deg,#1a0a0a,#2a0e0e);
  --c-surface:rgba(48,20,20,.72);
  --c-surface-2:rgba(64,26,26,.60);
  --c-text:#fff5f0;
  --c-muted:#c9a09a;
  --c-accent:#ff1744;
  --c-accent-2:#ffd700;
  --c-on-accent:#1a0a0a;
  --c-border:rgba(255,215,0,.18);
  --font-display:'Trebuchet MS','PingFang SC',sans-serif;
  --hero-grad:linear-gradient(115deg,#ff1744,#ffd700 50%,#ff5252);
  --nav-bg:rgba(26,10,10,.60);
  --nav-blur:blur(18px);
  --shadow:0 22px 55px rgba(255,23,68,.30);
  --radius:18px;
}
/* 烟花绽放层 —— 红金粒子爆裂，缓缓明灭 */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 18% 22%,rgba(255,215,0,.45) 1.5px,transparent 2.5px),
    radial-gradient(circle at 22% 18%,rgba(255,23,68,.50) 2px,transparent 3px),
    radial-gradient(circle at 50% 12%,rgba(255,215,0,.40) 1.5px,transparent 2.5px),
    radial-gradient(circle at 78% 26%,rgba(255,23,68,.45) 2px,transparent 3px),
    radial-gradient(circle at 72% 20%,rgba(255,215,0,.42) 1.5px,transparent 2.5px),
    radial-gradient(circle at 35% 78%,rgba(255,215,0,.38) 1.5px,transparent 2.5px),
    radial-gradient(circle at 65% 82%,rgba(255,23,68,.40) 2px,transparent 3px);
  background-size:140px 140px,160px 160px,120px 120px,150px 150px,130px 130px,180px 180px,170px 170px;
  opacity:.6;
  animation:fireworkBurst 6s ease-in-out infinite alternate;
}
@keyframes fireworkBurst{
  0%{opacity:.35;transform:scale(1)}
  50%{opacity:.7;transform:scale(1.04)}
  100%{opacity:.5;transform:scale(1.08)}
}
/* 标题：金红渐变流光闪烁 */
.hero h1{font-weight:300;letter-spacing:-1.5px}
.hero h1 .grad{
  background:linear-gradient(115deg,#ff1744,#ffd700 40%,#ff5252 70%,#ffd700);
  background-size:220% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
  font-weight:800;animation:newYearShimmer 6s linear infinite;
}
@keyframes newYearShimmer{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(255,215,0,.20)}
.album-card:hover{box-shadow:0 0 0 1px rgba(255,215,0,.45),0 34px 70px rgba(255,23,68,.40);border-color:rgba(255,215,0,.50);transform:translateY(-6px)}
.album-info{background:rgba(40,16,16,.50)}
.album-info h3{font-weight:600}
.album-badge{background:linear-gradient(115deg,#ff1744,#ffd700);color:#1a0a0a;border:none}
.album-meta{border-top-color:rgba(255,215,0,.14)}
.album-meta .view{color:#ffd700}
.section-head .kicker{background:linear-gradient(115deg,#ff1744,#ffd700);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:5px}
.about-visual{background:linear-gradient(135deg,#8c1414,#ff1744 50%,#ffd700);background-size:200% auto;animation:newYearShimmer 8s linear infinite;box-shadow:0 0 60px rgba(255,23,68,.40)}
.eyebrow{background:linear-gradient(115deg,#ff1744,#ffd700) !important;color:#1a0a0a !important;letter-spacing:3px}
.btn.primary{background:linear-gradient(115deg,#ff1744,#ffd700);color:#1a0a0a;box-shadow:0 12px 30px rgba(255,23,68,.45)}
.btn.ghost{background:rgba(255,255,255,.05);color:#fff5f0;border-color:rgba(255,215,0,.22)}
.divider{background:linear-gradient(115deg,#ff1744,#ffd700)}
.footer{background:#0e0404;border-top:1px solid rgba(255,215,0,.10)}
.logo-mark{box-shadow:0 6px 24px rgba(255,215,0,.55)}
.nav-menu a:hover{color:#ffd700;background:rgba(255,215,0,.10)}
.ts-swatch.ts-newyear{background:linear-gradient(135deg,#ff1744,#ffd700)}
.shape.s1{background:#ff1744 !important;opacity:.22 !important}
.shape.s2{background:#ffd700 !important;opacity:.20 !important}