/* ============================================================
   下班片场 · 全局设计系统「夜晚片场」
   深青夜色 + 橄榄绿(手册识别系统) + 钨丝灯暖黄 + REC红
   ============================================================ */

:root {
  color-scheme: dark;
  /* —— 色板 —— */
  --ink-0: #081517;          /* 页面最深底色 */
  --ink-1: #0D2023;          /* 面板 */
  --ink-2: #122B30;          /* 抬升面板 */
  --ink-3: #1A3A41;          /* 高亮面板/悬停 */
  --line: rgba(230, 236, 226, 0.10);
  --line-strong: rgba(230, 236, 226, 0.18);
  --text: #E6ECE2;
  --muted: #8FA5A0;
  --olive: #96A83F;          /* 橄榄绿 · 主强调 */
  --olive-bright: #C0D45A;
  --olive-dim: rgba(150, 168, 63, 0.14);
  --tungsten: #F0C052;       /* 钨丝灯暖黄 · 次强调 */
  --tungsten-dim: rgba(240, 192, 82, 0.12);
  --rec: #E5484D;            /* REC 红 */
  --ok: #4FB477;
  /* —— 字体 —— */
  --font-display: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", "Songti SC", serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", "Cascadia Code", Consolas, "Courier New", monospace;
  /* —— 布局 —— */
  --container: 1120px;
  --radius: 10px;
  --radius-lg: 16px;
  --nav-h: 64px;
  /* —— 动效 —— */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-snap: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ============ 基础 ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }

body {
  background: var(--ink-0);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 片场夜色氛围：顶部钨丝灯微光 + 底部深青渐变 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 420px at 78% -8%, rgba(240, 192, 82, 0.07), transparent 60%),
    radial-gradient(760px 500px at 12% 108%, rgba(150, 168, 63, 0.06), transparent 60%),
    linear-gradient(180deg, #0A191C 0%, var(--ink-0) 34%, #071214 100%);
}

/* 胶片颗粒（极淡） */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0.9 0 0 0 0 0.93 0 0 0 0 0.89 0 0 0 0.02 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection { background: var(--olive); color: #0B1A10; }

a { color: var(--olive-bright); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--tungsten); }

img { max-width: 100%; display: block; }

:focus-visible {
  outline: 2px solid var(--tungsten);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
}

/* ============ 场记条纹（签名元素之一） ============ */
.stripe {
  height: 10px;
  background: repeating-linear-gradient(
    -45deg,
    var(--olive) 0 18px,
    #0B1A1D 18px 36px
  );
  opacity: 0.85;
}
.stripe--thin { height: 6px; opacity: 0.55; }

/* ============ 场记标签（SCENE · TAKE） ============ */
.slate {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--olive-bright);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--olive);
  padding: 6px 14px;
  background: rgba(13, 32, 35, 0.7);
  text-transform: uppercase;
  white-space: nowrap;
}
.slate::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--rec);
  animation: blink 1.6s infinite;
}

@keyframes blink {
  0%, 55% { opacity: 1; box-shadow: 0 0 8px rgba(229, 72, 77, 0.8); }
  70%, 100% { opacity: 0.25; box-shadow: none; }
}

/* ============ 排版 ============ */
.display {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: 0.02em;
}

h1.display { font-size: clamp(38px, 6.2vw, 72px); }
h2.display { font-size: clamp(26px, 3.6vw, 40px); }
h3.display { font-size: clamp(19px, 2.2vw, 24px); }

.text-olive { color: var(--olive-bright); }
.text-tungsten { color: var(--tungsten); }
.text-rec { color: var(--rec); }
.text-muted { color: var(--muted); }
.mono { font-family: var(--font-mono); }

.section {
  padding: clamp(72px, 10vw, 120px) 0;
  position: relative;
}
.section--tight { padding: clamp(48px, 7vw, 80px) 0; }

.section-head { margin-bottom: clamp(36px, 5vw, 56px); }
.section-head .slate { margin-bottom: 20px; }
.section-head p.lede {
  margin-top: 14px;
  max-width: 640px;
  color: var(--muted);
  font-size: 17px;
}

/* ============ 导航 ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(8, 21, 23, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s;
}

.nav-inner {
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--text);
  margin-right: auto;
}
.nav-logo:hover { color: var(--tungsten); }

/* 迷你场记板 logo */
.logo-clap {
  width: 26px; height: 22px;
  position: relative;
  flex-shrink: 0;
}
.logo-clap::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 7px;
  background: repeating-linear-gradient(-45deg, var(--olive) 0 5px, var(--ink-0) 5px 10px);
  border-radius: 2px 2px 0 0;
  transform-origin: left bottom;
  transition: transform 0.35s var(--ease-snap);
}
.nav-logo:hover .logo-clap::before { transform: rotate(-16deg); }
.logo-clap::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 13px;
  background: var(--ink-3);
  border: 1px solid var(--line-strong);
  border-radius: 0 0 2px 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}
.nav-links a {
  color: var(--muted);
  font-size: 15px;
  position: relative;
  padding: 4px 0;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--olive);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s var(--ease-out);
}
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

.nav-cta { display: flex; align-items: center; gap: 12px; }

/* 移动端汉堡 */
.nav-burger {
  display: none;
  width: 40px; height: 40px;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-burger span {
  display: block;
  width: 18px; height: 2px;
  background: var(--text);
  transition: transform 0.3s var(--ease-snap), opacity 0.2s;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: transform 0.22s var(--ease-out), box-shadow 0.22s, background 0.22s, color 0.22s, border-color 0.22s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--olive);
  color: #101B08;
}
.btn--primary:hover {
  background: var(--olive-bright);
  color: #101B08;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(150, 168, 63, 0.35);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn--ghost:hover {
  border-color: var(--tungsten);
  color: var(--tungsten);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(240, 192, 82, 0.15);
}

.btn--rec {
  background: transparent;
  color: var(--rec);
  border-color: rgba(229, 72, 77, 0.5);
}
.btn--rec:hover { background: rgba(229, 72, 77, 0.12); transform: translateY(-2px); }

.btn--sm { padding: 7px 16px; font-size: 13px; border-radius: 8px; }
.btn--lg { padding: 16px 38px; font-size: 17px; }
.btn--block { width: 100%; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

/* ============ 卡片 ============ */
.card {
  background: linear-gradient(160deg, var(--ink-2), var(--ink-1) 70%);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  transition: transform 0.3s var(--ease-out), border-color 0.3s, box-shadow 0.3s;
}
.card:hover {
  transform: translateY(-5px);
  border-color: rgba(240, 192, 82, 0.35);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(240, 192, 82, 0.12);
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }

.card .card-tag {
  position: absolute;
  top: 20px; right: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--tungsten);
  border: 1px solid rgba(240, 192, 82, 0.4);
  padding: 3px 9px;
  border-radius: 999px;
}

.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* ============ 表格 ============ */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--ink-1);
}
table.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 640px;
}
.tbl th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--olive-bright);
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-strong);
  background: rgba(150, 168, 63, 0.06);
  white-space: nowrap;
}
.tbl td {
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  vertical-align: top;
}
.tbl tr:last-child td { border-bottom: none; }
.tbl tbody tr { transition: background 0.2s; }
.tbl tbody tr:hover { background: rgba(240, 192, 82, 0.04); }
.tbl td.dim { color: var(--muted); }

/* ============ 徽章 ============ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 3px 11px;
  border-radius: 999px;
  border: 1px solid;
  white-space: nowrap;
}
.badge--olive { color: var(--olive-bright); border-color: rgba(150,168,63,0.5); background: var(--olive-dim); }
.badge--tungsten { color: var(--tungsten); border-color: rgba(240,192,82,0.45); background: var(--tungsten-dim); }
.badge--rec { color: #FF8A8E; border-color: rgba(229,72,77,0.5); background: rgba(229,72,77,0.12); }
.badge--ok { color: #7ED6A2; border-color: rgba(79,180,119,0.5); background: rgba(79,180,119,0.1); }
.badge--dim { color: var(--muted); border-color: var(--line-strong); background: rgba(230,236,226,0.04); }

/* ============ 表单 ============ */
.field { margin-bottom: 20px; }
.field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.field label .req { color: var(--rec); margin-left: 3px; }
.field .hint { font-size: 12.5px; color: var(--muted); margin-top: 6px; }

.input, .select, .textarea {
  width: 100%;
  background: rgba(8, 21, 23, 0.75);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 16px;
  transition: border-color 0.22s, box-shadow 0.22s, background 0.22s;
}
.textarea { min-height: 110px; resize: vertical; line-height: 1.6; }
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--olive);
  box-shadow: 0 0 0 3px rgba(150, 168, 63, 0.18);
  background: rgba(8, 21, 23, 0.95);
}
.input::placeholder, .textarea::placeholder { color: rgba(143, 165, 160, 0.55); }
.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238FA5A0' stroke-width='2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

/* 复选/单选片场风格 */
.check-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  font-size: 14.5px;
}
.check-row:hover { border-color: var(--olive); background: var(--olive-dim); }
.check-row input { accent-color: var(--olive); margin-top: 4px; flex-shrink: 0; }
.check-row.checked { border-color: var(--olive); background: var(--olive-dim); }

/* ============ 提示条 ============ */
.note {
  border: 1px solid rgba(240, 192, 82, 0.35);
  border-left: 3px solid var(--tungsten);
  background: var(--tungsten-dim);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 14.5px;
  color: var(--text);
}
.note--olive { border-color: rgba(150,168,63,0.4); border-left-color: var(--olive); background: var(--olive-dim); }
.note--rec { border-color: rgba(229,72,77,0.4); border-left-color: var(--rec); background: rgba(229,72,77,0.08); }
.note strong { color: var(--tungsten); }
.note--olive strong { color: var(--olive-bright); }
.note--rec strong { color: #FF8A8E; }

/* ============ Toast ============ */
.toast-box {
  position: fixed;
  top: calc(var(--nav-h) + 16px);
  right: 20px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  min-width: 260px;
  max-width: 360px;
  background: var(--ink-2);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--olive);
  border-radius: var(--radius);
  padding: 13px 18px;
  font-size: 14.5px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
  animation: toastIn 0.35s var(--ease-out);
  display: flex;
  align-items: center;
  gap: 10px;
}
.toast--err { border-left-color: var(--rec); }
.toast--err::before { content: "✕"; color: var(--rec); font-weight: 700; }
.toast--ok::before { content: "✓"; color: var(--olive-bright); font-weight: 700; }
.toast.out { animation: toastOut 0.3s var(--ease-snap) forwards; }

@keyframes toastIn { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: none; } }
@keyframes toastOut { to { opacity: 0; transform: translateX(40px); } }

/* ============ 滚动入场动画 ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  transition-delay: var(--d, 0s);
}
.reveal.in { opacity: 1; transform: none; }

.reveal-left { opacity: 0; transform: translateX(-36px); transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out); transition-delay: var(--d, 0s); }
.reveal-left.in { opacity: 1; transform: none; }

.reveal-scale { opacity: 0; transform: scale(0.92); transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out); transition-delay: var(--d, 0s); }
.reveal-scale.in { opacity: 1; transform: none; }

/* ============ 跑马灯 ============ */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(13, 32, 35, 0.5);
  padding: 14px 0;
  position: relative;
}
.marquee-track {
  display: flex;
  gap: 48px;
  width: max-content;
  animation: marquee 30s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--muted);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 48px;
}
.marquee-track span i {
  font-style: normal;
  color: var(--olive);
  font-family: var(--font-mono);
  font-size: 13px;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ============ 页脚 ============ */
.footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
  margin-top: 40px;
  background: linear-gradient(180deg, transparent, rgba(8, 21, 23, 0.9));
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--olive-bright);
  margin-bottom: 16px;
}
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 10px; }
.footer ul a { color: var(--muted); font-size: 14.5px; }
.footer ul a:hover { color: var(--tungsten); }
.footer-slogan {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--text);
  margin: 14px 0 8px;
}
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

/* ============ 认证页布局 ============ */
.auth-wrap {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.auth-side {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 64px;
  background:
    radial-gradient(600px 400px at 70% 20%, rgba(240, 192, 82, 0.08), transparent 65%),
    linear-gradient(200deg, var(--ink-2), var(--ink-0) 75%);
  border-right: 1px solid var(--line);
  overflow: hidden;
}
.auth-side .stripe { position: absolute; top: 0; left: 0; right: 0; }
.auth-form-col {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 100px 32px 60px;
}
.auth-card { width: min(420px, 100%); }
.auth-card .display { margin-bottom: 8px; }
.auth-card > p { color: var(--muted); margin-bottom: 30px; font-size: 15px; }

/* ============ 模态 ============ */
.modal-mask {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(4, 12, 13, 0.75);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal-mask.show { display: flex; animation: fadeIn 0.25s ease; }
.modal {
  width: min(560px, 100%);
  max-height: 86vh;
  overflow-y: auto;
  background: var(--ink-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 30px;
  animation: modalIn 0.35s var(--ease-out);
}
@keyframes fadeIn { from { opacity: 0; } }
@keyframes modalIn { from { opacity: 0; transform: translateY(24px) scale(0.97); } }

/* ============ 空状态 ============ */
.empty {
  text-align: center;
  padding: 48px 20px;
  color: var(--muted);
  font-size: 14.5px;
}
.empty .mono { display: block; font-size: 26px; margin-bottom: 12px; color: var(--line-strong); letter-spacing: 0.2em; }

/* ============ 加载态 ============ */
.spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(230, 236, 226, 0.2);
  border-top-color: var(--olive-bright);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .auth-wrap { grid-template-columns: 1fr; }
  .auth-side { display: none; }
}

@media (max-width: 720px) {
  .nav-links, .nav-cta {
    display: none;
  }
  .nav-burger { display: flex; }
  .nav.menu-open .nav-links {
    display: flex;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(8, 21, 23, 0.98);
    border-bottom: 1px solid var(--line-strong);
    padding: 12px 24px 20px;
  }
  .nav.menu-open .nav-links a { padding: 13px 4px; font-size: 16px; border-bottom: 1px solid var(--line); }
  .nav.menu-open .nav-links a::after { display: none; }
  .nav.menu-open .nav-cta {
    display: flex;
    position: fixed;
    top: calc(var(--nav-h) + var(--menu-links-h, 300px));
    left: 0; right: 0;
    padding: 16px 24px;
    background: rgba(8, 21, 23, 0.98);
    flex-direction: column;
    align-items: stretch;
  }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .container { width: calc(100% - 40px); }
}

/* ============ 无障碍：减少动态 ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal, .reveal-left, .reveal-scale { opacity: 1; transform: none; }
}