/* ═══════════════════════════════════════════
   Minimalist Layout — 页面布局 + 动画
   ═══════════════════════════════════════════ */

/* 页面容器 — 顶栏为固定双层，需留出 --nav-h */
.page { display: none; padding-top: var(--nav-h); padding-bottom: 80px; }
.page.active { display: block; animation: pageIn 0.5s var(--ease-out); }
/* 首页主图全屏出血，不留顶栏 padding */
#page-home { padding-top: 0; padding-bottom: 0; }
/* 个人中心/用户主页等容器：原内联 padding 迁移为类（移动端由 mobile.css 覆盖为 16px） */
.page-shell { max-width: 1500px; margin: 0; padding: 24px 32px 80px 16px; }
.page-shell--tighter { padding-top: 40px; }
@keyframes pageIn { from { opacity: 0; } to { opacity: 1; } }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 32px; }
@media (max-width: 768px) { .container { padding: 0 20px; } }
@media (max-width: 500px) { .container { padding: 0 16px; } }
.container--sm { max-width: 420px; }
.container--md { max-width: 560px; }
.container--lg { max-width: 820px; }
.card--padded { padding: 32px; }
.btn--block { width: 100%; }
.auth-foot { text-align: center; margin-top: 16px; font-size: 0.85rem; color: var(--fg-muted); }
.auth-foot a { color: var(--pop); font-weight: 500; }
.section-head {
  display: flex; align-items: baseline; gap: 16px;
  margin-bottom: 40px;
}
.section-head h2 { font-size: clamp(1.75rem, 3vw, 2.75rem); font-weight: 300; }

/* ═══════ 站点页脚 ═══════ */
.footer { border-top: 1px solid var(--border); background: var(--bg-elev); }
.footer__inner {
  max-width: var(--max-w); margin: 0 auto;
  padding: 64px 32px 44px;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px;
}
.footer__logo { height: 30px; width: auto; margin-bottom: 18px; filter: brightness(0); }
[data-theme="dark"] .footer__logo { filter: none; }
.footer__slogan { font-size: 1.05rem; font-weight: 500; letter-spacing: 0.01em; }
.footer__tag { font-size: 0.78rem; color: var(--fg-muted); margin-top: 8px; }
.footer__col { display: flex; flex-direction: column; gap: 10px; font-size: 0.82rem; }
.footer__col-title {
  font-size: 0.72rem; color: var(--fg-dim);
  letter-spacing: 0.12em; margin-bottom: 6px;
}
.footer__col a { color: var(--fg-muted); width: fit-content; transition: color var(--dur-2); }
.footer__col a:hover { color: var(--pop); }
.footer__base {
  max-width: var(--max-w); margin: 0 auto;
  border-top: 1px solid var(--border);
  padding: 18px 32px;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 0.72rem; color: var(--fg-dim);
}
@media (max-width: 768px) {
  .footer__inner { grid-template-columns: 1fr 1fr; padding: 48px 20px 32px; }
  .footer__brand { grid-column: 1 / -1; }
  .footer__base { padding: 14px 20px; }
}
@media (max-width: 500px) {
  .footer__inner { padding: 40px 16px 28px; gap: 24px; }
  .footer__base { padding: 12px 16px; }
}

/* ── 滚动渐入动画 ── */
.fade-up { opacity: 0; transform: translateY(40px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.fade-up.in { opacity: 1; transform: translateY(0); }
.fade-left { opacity: 0; transform: translateX(-40px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.fade-left.in { opacity: 1; transform: translateX(0); }
.fade-right { opacity: 0; transform: translateX(40px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.fade-right.in { opacity: 1; transform: translateX(0); }
.fade-in { opacity: 0; transition: opacity 0.8s ease; }
.fade-in.in { opacity: 1; }
.d1 { transition-delay: 0.08s; } .d2 { transition-delay: 0.16s; }
.d3 { transition-delay: 0.24s; } .d4 { transition-delay: 0.32s; }
.d5 { transition-delay: 0.40s; }