/* ============================================================
   押注正规电竞 · /assets/site.css
   共享外壳：reset / tokens / 排版 / 页头 / 页脚 / 基础组件
   ============================================================ */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background-color: #08111F;
  background-image:
    linear-gradient(rgba(30, 58, 92, 0.34) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 92, 0.34) 1px, transparent 1px);
  background-size: 24px 24px, 24px 24px;
  background-attachment: fixed;
}
img, svg, picture { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0; }
h1, h2, h3, h4, h5 { margin: 0; line-height: 1.16; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; }
hr { border: 0; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink-900: #08111F;
  --ink-800: #0F2038;
  --line: #1E3A5C;
  --steel: #2C5378;
  --paper: #E6F1FF;
  --mute: #8FB0CC;
  --cyan: #12E0C4;
  --gold: #FFB020;
  --sky: #4DD2FF;
  --alert: #FF6B4A;
  --ok: #6BE59A;

  --r-card: 20px;
  --r-small: 12px;
  --r-pill: 999px;

  --shell: 1280px;
  --gap: 24px;
  --header-h: 72px;

  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(1100px 560px at 78% -12%, rgba(18, 224, 196, 0.10), transparent 68%),
    radial-gradient(900px 520px at -8% 104%, rgba(255, 176, 32, 0.07), transparent 70%);
  background-repeat: no-repeat;
  background-attachment: fixed;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 800; letter-spacing: -0.02em; font-stretch: 88%; }
h4, h5 { font-family: var(--font-display); font-weight: 700; }

.mono, .num { font-family: var(--mono); font-weight: 700; letter-spacing: 0.01em; }
.num { font-size: 0.94em; }

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mute);
}

.side-note {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--mute);
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------- 4. 容器与网格 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 40px);
}

.grid {
  display: grid;
  gap: var(--gap);
  grid-template-columns: repeat(12, minmax(0, 1fr));
}
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

.stack { display: grid; gap: 16px; }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }

.divider { height: 1px; width: 100%; background: var(--line); }

/* ---------- 5. 可访问性 ---------- */
:focus-visible {
  outline: 2px solid var(--sky);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 200;
  transform: translateY(-160%);
  padding: 10px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--cyan);
  background: var(--ink-800);
  color: var(--paper);
  font-size: 13px;
  font-weight: 600;
  transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 6. 页头命令栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(8, 17, 31, 0.92);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.header-shell {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 72px;
  padding-block: 10px;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  border-radius: 14px;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 11px;
  border: 1px solid rgba(18, 224, 196, 0.45);
  background: linear-gradient(150deg, rgba(18, 224, 196, 0.16), rgba(15, 32, 56, 0.92));
  color: var(--cyan);
  box-shadow: inset 0 0 14px rgba(18, 224, 196, 0.18);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; gap: 2px; }
.brand-name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  font-stretch: 88%;
  color: var(--paper);
}
.brand-sub {
  font-family: var(--mono);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}
.brand:hover .brand-mark { border-color: var(--cyan); }
.brand--footer .brand-name { font-size: 16px; }

/* 移动按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 9px 15px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: rgba(15, 32, 56, 0.9);
  color: var(--paper);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.nav-toggle:hover { border-color: var(--steel); background: rgba(44, 83, 120, 0.45); }
.nav-toggle-bars { display: grid; gap: 3px; width: 16px; }
.nav-toggle-bars span {
  display: block;
  height: 1.5px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }
.nav-toggle-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; }

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  flex: 1 1 auto;
  margin-left: auto;
}

.quick-entry {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px 6px 11px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(18, 224, 196, 0.38);
  background: rgba(18, 224, 196, 0.09);
  color: var(--paper);
  font-size: 12.5px;
  font-weight: 600;
  white-space: nowrap;
  transition: border-color 0.2s, background 0.2s, transform 0.2s var(--ease);
}
.quick-entry:hover { border-color: var(--cyan); background: rgba(18, 224, 196, 0.16); transform: translateY(-2px); }
.quick-entry-note {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--cyan);
  text-transform: uppercase;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mute);
  flex: 0 0 auto;
}
.status-dot--live { background: var(--cyan); box-shadow: 0 0 0 3px rgba(18, 224, 196, 0.18); }
.status-dot--ok { background: var(--ok); box-shadow: 0 0 0 3px rgba(107, 229, 154, 0.16); }
.status-dot--alert { background: var(--alert); box-shadow: 0 0 0 3px rgba(255, 107, 74, 0.16); }
.status-dot--gold { background: var(--gold); box-shadow: 0 0 0 3px rgba(255, 176, 32, 0.16); }

.nav-list { display: flex; align-items: center; gap: 2px; }
.nav-item { display: flex; }
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 11px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  color: var(--mute);
  font-size: 13.5px;
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.2s var(--ease);
}
.nav-link:hover {
  color: var(--paper);
  border-color: var(--line);
  background: rgba(44, 83, 120, 0.3);
  transform: translateY(-2px);
}
.nav-link[aria-current="page"] {
  color: var(--paper);
  border-color: rgba(18, 224, 196, 0.5);
  background: rgba(18, 224, 196, 0.1);
}
.nav-index {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: rgba(143, 176, 204, 0.55);
  transition: color 0.2s;
}
.nav-link:hover .nav-index { color: var(--sky); }
.nav-link[aria-current="page"] .nav-index { color: var(--cyan); }
.nav-label { line-height: 1; }

.nav-status {
  padding-left: 14px;
  border-left: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--mute);
  white-space: nowrap;
}
.nav-status-key { color: var(--gold); }

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 88px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(15, 32, 56, 0.72), rgba(8, 17, 31, 1));
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(18, 224, 196, 0.55), rgba(255, 176, 32, 0.4), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 1.5fr 0.9fr;
  gap: 32px;
  padding-block: 56px 36px;
}
.footer-col { min-width: 0; }
.footer-col--brand { display: flex; flex-direction: column; gap: 14px; }
.footer-tagline {
  max-width: 30ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mute);
}
.footer-heading {
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.footer-heading::before { content: "// "; color: var(--line); }
.footer-list { display: grid; gap: 9px; }
.footer-link {
  display: inline-block;
  color: var(--mute);
  font-size: 13.5px;
  transition: color 0.2s, transform 0.2s var(--ease);
}
.footer-link:hover { color: var(--paper); transform: translateX(2px); }
.footer-link--inline {
  margin-top: 6px;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(255, 176, 32, 0.45);
  color: var(--gold);
  font-size: 12.5px;
}
.footer-link--inline:hover { border-color: var(--gold); background: rgba(255, 176, 32, 0.12); color: var(--gold); }
.footer-list--contact { gap: 12px; }
.footer-label {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(143, 176, 204, 0.8);
}
.footer-value { display: block; font-size: 13px; line-height: 1.6; color: var(--paper); overflow-wrap: anywhere; }
.footer-value.mono { font-size: 12.5px; letter-spacing: 0.02em; }
.footer-meta { font-size: 12px; line-height: 1.7; color: var(--mute); }
.footer-meta.mono { font-size: 11.5px; letter-spacing: 0.06em; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-block: 18px 26px;
  border-top: 1px solid rgba(30, 58, 92, 0.8);
}
.footer-note { font-size: 12px; color: var(--mute); }
.footer-bottom-meta { font-size: 11px; letter-spacing: 0.06em; color: rgba(143, 176, 204, 0.85); }

/* ---------- 8. 按钮与胶囊 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: rgba(15, 32, 56, 0.85);
  color: var(--paper);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s, transform 0.2s var(--ease);
}
.btn:hover { transform: translateY(-2px); border-color: var(--sky); color: var(--paper); }
.btn--gold {
  border-color: rgba(255, 176, 32, 0.55);
  background: rgba(255, 176, 32, 0.12);
  color: #FFD98A;
}
.btn--gold:hover { border-color: var(--gold); background: rgba(255, 176, 32, 0.2); }
.btn--cyan {
  border-color: rgba(18, 224, 196, 0.5);
  background: rgba(18, 224, 196, 0.12);
  color: #8FF8EA;
}
.btn--cyan:hover { border-color: var(--cyan); background: rgba(18, 224, 196, 0.2); }
.btn--ghost { background: transparent; color: var(--mute); }
.btn--ghost:hover { color: var(--paper); background: rgba(44, 83, 120, 0.28); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: rgba(44, 83, 120, 0.24);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--mute);
  white-space: nowrap;
}
.pill--cyan { border-color: rgba(18, 224, 196, 0.42); background: rgba(18, 224, 196, 0.1); color: #8FF8EA; }
.pill--gold { border-color: rgba(255, 176, 32, 0.42); background: rgba(255, 176, 32, 0.1); color: #FFD98A; }
.pill--alert { border-color: rgba(255, 107, 74, 0.42); background: rgba(255, 107, 74, 0.1); color: #FFB4A2; }
.pill--ok { border-color: rgba(107, 229, 154, 0.42); background: rgba(107, 229, 154, 0.1); color: #A8F3C6; }

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 3px 9px;
  border-radius: 6px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--mute);
}

/* ---------- 9. 章节与正文容器 ---------- */
.section { padding-block: clamp(36px, 5vw, 64px); }
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 16px;
  margin-bottom: 26px;
}
.section-num {
  font-family: var(--mono);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--cyan);
  opacity: 0.7;
}
.section-title {
  font-size: clamp(22px, 3vw, 34px);
  color: var(--paper);
}
.section-lede {
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mute);
}

.page-header {
  padding-block: clamp(32px, 5vw, 56px) 22px;
  border-bottom: 1px solid var(--line);
}
.page-title {
  font-size: clamp(28px, 4.4vw, 48px);
  color: var(--paper);
}
.page-lede {
  max-width: 52ch;
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mute);
}

.prose { max-width: 44em; font-size: 15.5px; line-height: 1.78; color: #CBDDF2; }
.prose p + p { margin-top: 14px; }
.prose h2 { margin: 28px 0 10px; font-size: 20px; color: var(--paper); }
.prose h3 { margin: 22px 0 8px; font-size: 17px; color: var(--paper); }
.prose ul, .prose ol { margin: 12px 0; padding-left: 20px; list-style: disc; }
.prose li + li { margin-top: 6px; }
.prose strong { color: var(--paper); }
.prose a { color: var(--sky); text-decoration: underline; text-underline-offset: 3px; }

/* 面包屑 */
.breadcrumb { margin-bottom: 20px; }
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mute);
}
.breadcrumb-item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb-item + .breadcrumb-item::before { content: "/"; color: var(--line); }
.breadcrumb-item a:hover { color: var(--cyan); }
.breadcrumb-item[aria-current="page"] { color: var(--paper); }

/* ---------- 10. 卡片与列表 ---------- */
.card {
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: linear-gradient(180deg, rgba(15, 32, 56, 0.92), rgba(9, 20, 36, 0.94));
  padding: 24px;
  transition: border-color 0.2s, transform 0.2s var(--ease);
}
.card:hover { border-color: rgba(77, 210, 255, 0.45); }
.card--panel {
  background: linear-gradient(180deg, rgba(15, 32, 56, 0.96), rgba(8, 17, 31, 0.96));
  padding: 0;
  overflow: hidden;
}
.card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.card-title { font-size: 17px; color: var(--paper); }
.card-body { font-size: 14px; line-height: 1.72; color: #C6D8EE; }
.card-foot {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(30, 58, 92, 0.85);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.card-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.index-list { display: grid; }
.index-list-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 2px;
  border-bottom: 1px dashed rgba(30, 58, 92, 0.85);
  font-size: 14px;
  color: #C6D8EE;
}
.index-list-item:last-child { border-bottom: 0; }
.index-list-item a { transition: color 0.2s; }
.index-list-item a:hover { color: var(--cyan); }
.index-list-item .mono { color: var(--mute); font-size: 11.5px; }

/* ---------- 11. 表格 ---------- */
.data-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(9, 20, 36, 0.7);
}
.data-table { width: 100%; min-width: 520px; font-size: 14px; }
.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
  background: rgba(15, 32, 56, 0.9);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(30, 58, 92, 0.6);
  color: var(--paper);
}
.data-table tbody tr:nth-child(even) { background: rgba(44, 83, 120, 0.14); }
.data-table tbody tr:hover { background: rgba(18, 224, 196, 0.07); }
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table .mono { color: var(--cyan); }

/* ---------- 12. 图片容器（页面阶段复用） ---------- */
.media {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  aspect-ratio: 16 / 9;
  background-color: var(--ink-800);
  background-image:
    linear-gradient(140deg, rgba(44, 83, 120, 0.5), rgba(8, 17, 31, 0.92)),
    linear-gradient(rgba(30, 58, 92, 0.55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 92, 0.55) 1px, transparent 1px);
  background-size: auto, 24px 24px, 24px 24px;
}
.media img, .media picture img { width: 100%; height: 100%; object-fit: cover; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--21x9 { aspect-ratio: 21 / 9; }
.media--slice { clip-path: polygon(0 0, 100% 0, 100% 84%, 0 100%); }
.media--cyan { border-color: rgba(18, 224, 196, 0.45); background-image: linear-gradient(140deg, rgba(18, 224, 196, 0.18), rgba(8, 17, 31, 0.94)); }
.media--gold { border-color: rgba(255, 176, 32, 0.4); background-image: linear-gradient(140deg, rgba(255, 176, 32, 0.16), rgba(8, 17, 31, 0.94)); }
.media-art {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(143, 176, 204, 0.7);
  padding: 16px;
  text-align: center;
}
.media-cap {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--mute);
}

/* ---------- 13. 滚动进度与显现 ---------- */
.scroll-rail {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 90;
  background: rgba(30, 58, 92, 0.5);
  pointer-events: none;
}
.scroll-bar {
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--sky) 60%, var(--gold));
}

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.42s var(--ease), transform 0.48s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1180px) {
  .nav-status { display: none; }
}
@media (max-width: 1040px) {
  .quick-entry-note { display: none; }
  .nav-link { padding: 7px 9px; font-size: 13px; }
  .header-shell { gap: 12px; }
}
@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: fixed;
    left: 12px;
    right: 12px;
    top: calc(var(--header-h) + 8px);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 10px;
    margin-left: 0;
    padding: 16px;
    max-height: calc(100dvh - var(--header-h) - 24px);
    overflow-y: auto;
    border: 1px solid var(--line);
    border-radius: var(--r-card);
    background: linear-gradient(180deg, rgba(15, 32, 56, 0.99), rgba(8, 17, 31, 0.99));
    box-shadow: 0 28px 64px rgba(0, 0, 0, 0.62);
    z-index: 70;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.24s var(--ease), transform 0.24s var(--ease), visibility 0.24s;
  }
  .site-nav[data-open="true"] { opacity: 1; visibility: visible; transform: none; }
  .quick-entry { width: 100%; justify-content: flex-start; padding: 10px 14px; font-size: 13px; }
  .quick-entry-note { display: inline; margin-left: auto; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 11px 12px;
    border-radius: var(--r-small);
    border-color: rgba(30, 58, 92, 0.7);
    font-size: 14px;
  }
  .nav-link[aria-current="page"] { border-radius: var(--r-small); }
  .nav-status {
    display: block;
    padding: 12px 0 0;
    border-left: 0;
    border-top: 1px solid var(--line);
    white-space: normal;
    line-height: 1.6;
  }
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .span-4 { grid-column: span 3; }
  .span-8 { grid-column: span 6; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; padding-block: 44px 30px; }
}
@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .span-4, .span-6, .span-8, .span-12 { grid-column: span 1; }
  .brand-sub { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .section-num { font-size: 20px; }
  .card { padding: 20px; }
  .site-footer { margin-top: 64px; }
}

/* ---------- 15. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .nav-link:hover, .btn:hover, .quick-entry:hover, .footer-link:hover { transform: none; }
}