/* ============================================================
   诺亚体育赛事 · 共享样式 /assets/site.css
   高原赛场夜航：深墨绿底 + 计时器冷光 + 切角赛程牌
   ============================================================ */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body, h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, picture, svg, video { display: block; max-width: 100%; }
button { background: none; border: 0; padding: 0; font: inherit; color: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #0B2A24;
  --ink-2: #10322B;
  --dusk: #15243D;
  --paper: #F5F1E6;
  --mist: #C9D4CF;
  --cold: #35E0C1;
  --amber: #E7A93B;
  --red: #C6433C;
  --violet: #7E6BEA;
  --graphite: #55605D;
  --line: #263B36;
  --line-soft: rgba(201, 212, 207, 0.16);
  --ink-on-paper: #2A322F;

  --font-display: "Archivo Narrow", "Oswald", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, "Times New Roman", serif;
  --font-body: "Noto Sans SC", system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --rail: 1320px;
  --pad-x: clamp(18px, 4vw, 56px);
  --header-h: 76px;
  --cut: 18px;
  --ease: cubic-bezier(0.22, 0.68, 0, 1);
}

/* ---------- 3. 基础排版 ---------- */
html { scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
::selection { background: var(--cold); color: #04211B; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  line-height: 1.12;
  letter-spacing: -0.03em;
  text-wrap: balance;
}
h1 { font-size: clamp(36px, 6vw, 84px); line-height: 1.03; letter-spacing: -0.04em; }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(19px, 2vw, 24px); letter-spacing: -0.02em; }
p { text-wrap: pretty; }

.editorial {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.005em;
}
.data,
code, kbd, samp {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

:where(a, button, [tabindex], summary, input):focus-visible {
  outline: 2px solid var(--cold);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(53, 224, 193, 0.18);
}

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

/* ---------- 4. 容器与网格 ---------- */
.container {
  width: 100%;
  max-width: var(--rail);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}
.container-narrow { max-width: 860px; }

.grid { display: grid; gap: clamp(16px, 2.4vw, 32px); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ---------- 5. 通用组件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease),
              border-color 0.22s var(--ease), transform 0.22s var(--ease);
}
.btn-cta {
  background: var(--amber);
  color: #1F1708;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}
.btn-cta:hover { background: #F2BC5A; }
.btn-ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}
.btn-ghost:hover { border-color: var(--cold); color: var(--cold); }
.btn-line {
  background: transparent;
  color: var(--cold);
  border-color: rgba(53, 224, 193, 0.42);
}
.btn-line:hover { background: rgba(53, 224, 193, 0.12); border-color: var(--cold); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  color: var(--mist);
  white-space: nowrap;
}
.tag-cold { color: var(--cold); border-color: rgba(53, 224, 193, 0.4); background: rgba(53, 224, 193, 0.08); }
.tag-amber { color: var(--amber); border-color: rgba(231, 169, 59, 0.42); background: rgba(231, 169, 59, 0.1); }
.tag-violet { color: #B7ACF6; border-color: rgba(126, 107, 234, 0.45); background: rgba(126, 107, 234, 0.12); }

.panel {
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--line);
  padding: clamp(20px, 2.6vw, 34px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}
.panel-dusk { background: var(--dusk); }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}
.breadcrumb a { color: var(--mist); border-bottom: 1px solid transparent; transition: color 0.2s, border-color 0.2s; }
.breadcrumb a:hover { color: var(--cold); border-bottom-color: var(--cold); }
.breadcrumb-sep { color: rgba(201, 212, 207, 0.4); }
.breadcrumb [aria-current="page"] { color: var(--paper); }

.prose {
  max-width: 72ch;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--paper);
}
.prose p { margin-bottom: 1.35em; }
.prose h2, .prose h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.35;
  margin: 2em 0 0.7em;
}
.prose h2 { font-size: clamp(22px, 2.4vw, 30px); }
.prose h3 { font-size: clamp(18px, 1.8vw, 22px); }
.prose ul, .prose ol { margin: 0 0 1.35em; padding-left: 1.25em; }
.prose ul { list-style: square; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: 0.5em; }
.prose a { color: var(--cold); border-bottom: 1px solid rgba(53, 224, 193, 0.4); }
.prose a:hover { border-bottom-color: var(--cold); }
.prose strong { color: #FFFFFF; font-weight: 700; }

.surface-paper {
  background: var(--paper);
  color: var(--ink-on-paper);
}
.surface-paper h1, .surface-paper h2, .surface-paper h3 { color: #16221F; }
.surface-paper .prose, .surface-paper .prose strong { color: var(--ink-on-paper); }
.surface-paper .prose strong { font-weight: 700; color: #101B18; }
.surface-paper .prose a { color: #8A5A12; border-bottom-color: rgba(231, 169, 59, 0.6); }
.surface-paper .breadcrumb { color: var(--graphite); }
.surface-paper .breadcrumb a { color: var(--graphite); }

/* 图片容器基础规则（共享头尾不直接放图，供页面阶段使用） */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: linear-gradient(145deg, var(--dusk), #0B2A24 72%);
  border: 1px solid var(--line);
}
.media-frame img,
.media-frame picture,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(53, 224, 193, 0.14);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  pointer-events: none;
}
.media-frame[data-ratio="21x9"] { aspect-ratio: 21 / 9; }
.media-frame[data-ratio="16x9"] { aspect-ratio: 16 / 9; }
.media-frame[data-ratio="4x3"] { aspect-ratio: 4 / 3; }
.media-frame[data-ratio="1x1"] { aspect-ratio: 1 / 1; }
.media-frame[data-ratio="3x4"] { aspect-ratio: 3 / 4; }

/* ---------- 6. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: linear-gradient(180deg, #0C2C26 0%, #0B2A24 100%);
  border-bottom: 1px solid var(--line);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 200;
  padding: 10px 20px;
  background: var(--amber);
  color: #1F1708;
  font-size: 14px;
  font-weight: 700;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 10px; }

.header-rail {
  max-width: var(--rail);
  margin-inline: auto;
  padding-inline: var(--pad-x);
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(12px, 2vw, 32px);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.2vw, 16px);
  min-width: 0;
}

.brand-lockup { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark {
  width: 30px;
  height: 30px;
  flex: none;
  background: linear-gradient(150deg, var(--cold) 8%, var(--amber) 92%);
  clip-path: polygon(0 0, 100% 18%, 78% 100%, 0 82%);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.06; min-width: 0; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  font-size: clamp(16px, 1.5vw, 20px);
  letter-spacing: -0.02em;
  color: var(--paper);
  white-space: nowrap;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: rgba(201, 212, 207, 0.72);
  text-transform: uppercase;
  white-space: nowrap;
}

.version-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px 5px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cold);
  background: rgba(53, 224, 193, 0.07);
  border: 1px solid rgba(53, 224, 193, 0.32);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
  white-space: nowrap;
}
.version-chip:hover { background: rgba(53, 224, 193, 0.16); border-color: var(--cold); }
.version-dot {
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background: var(--cold);
  box-shadow: 0 0 0 3px rgba(53, 224, 193, 0.18);
}
.version-label { color: rgba(201, 212, 207, 0.86); }
.version-code { color: var(--cold); font-weight: 700; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  color: var(--paper);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.nav-toggle:hover { border-color: var(--cold); color: var(--cold); }
.nav-toggle-icon {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
  flex: none;
}
.nav-toggle-icon span {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--cold);
  transition: transform 0.28s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle-icon span:nth-child(1) { top: 0; }
.nav-toggle-icon span:nth-child(2) { bottom: 0; }
.nav-toggle[data-open] .nav-toggle-icon span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[data-open] .nav-toggle-icon span:nth-child(2) { transform: translateY(-5px) rotate(-45deg); }

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 26px);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 0.9vw, 14px);
}
.nav-item { display: block; }
.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 10px;
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--mist);
  transition: color 0.2s var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 3px;
  height: 2px;
  background: var(--cold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.26s var(--ease);
}
.nav-link:hover { color: var(--paper); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link[aria-current="page"] { color: var(--paper); font-weight: 700; }
.nav-link[aria-current="page"]::after { transform: scaleX(1); background: var(--amber); }

.nav-cta { font-size: 13.5px; padding: 10px 18px; }

.nav-scrim { display: none; }

.header-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--cold) 0%, var(--violet) 58%, var(--amber) 100%);
  transition: width 0.12s linear;
  pointer-events: none;
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  background: linear-gradient(180deg, #0B2A24 0%, #08211C 100%);
  border-top: 1px solid var(--line);
  color: var(--mist);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(115deg, rgba(201, 212, 207, 0.055) 0 1px, transparent 1px 28px);
  pointer-events: none;
}
.footer-rail {
  position: relative;
  z-index: 1;
  max-width: var(--rail);
  margin-inline: auto;
  padding: clamp(44px, 6vw, 78px) var(--pad-x) clamp(26px, 3vw, 40px);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(250px, 1.05fr) minmax(0, 2fr);
  gap: clamp(26px, 4vw, 64px);
  padding-bottom: clamp(26px, 3.6vw, 46px);
  border-bottom: 1px solid var(--line-soft);
}
.footer-brand { display: flex; flex-direction: column; gap: 14px; }
.footer-lockup { display: inline-flex; align-items: center; gap: 10px; }
.footer-mark {
  width: 26px;
  height: 26px;
  flex: none;
  background: linear-gradient(150deg, var(--cold) 8%, var(--amber) 92%);
  clip-path: polygon(0 0, 100% 18%, 78% 100%, 0 82%);
}
.footer-wordmark {
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  font-size: clamp(17px, 1.8vw, 21px);
  letter-spacing: -0.02em;
  color: var(--paper);
}
.footer-tagline {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(201, 212, 207, 0.9);
}
.footer-signal {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(53, 224, 193, 0.06);
  border-left: 2px solid var(--cold);
}
.signal-dot {
  width: 8px;
  height: 8px;
  flex: none;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--cold);
  box-shadow: 0 0 0 0 rgba(53, 224, 193, 0.45);
  animation: signal-pulse 3s var(--ease) infinite;
}
.signal-text {
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.75;
  letter-spacing: 0.02em;
  color: rgba(201, 212, 207, 0.88);
}
@keyframes signal-pulse {
  0% { box-shadow: 0 0 0 0 rgba(53, 224, 193, 0.45); }
  70% { box-shadow: 0 0 0 9px rgba(53, 224, 193, 0); }
  100% { box-shadow: 0 0 0 0 rgba(53, 224, 193, 0); }
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 36px);
}
.footer-col-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}
.footer-list { display: flex; flex-direction: column; gap: 9px; }
.footer-link {
  display: inline-block;
  font-size: 14.5px;
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.footer-link:hover { color: var(--cold); border-bottom-color: rgba(53, 224, 193, 0.6); }

.footer-contact {
  display: grid;
  grid-template-columns: minmax(150px, 220px) minmax(0, 1fr);
  gap: clamp(14px, 3vw, 48px);
  padding: clamp(22px, 3vw, 34px) 0;
  border-bottom: 1px solid var(--line-soft);
}
.footer-contact-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cold);
}
.contact-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px clamp(16px, 3vw, 40px);
}
.contact-item { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.contact-key {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(201, 212, 207, 0.6);
}
.contact-val {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--paper);
  word-break: break-word;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px clamp(14px, 3vw, 32px);
  padding-top: clamp(16px, 2.4vw, 26px);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: rgba(201, 212, 207, 0.66);
}
.footer-copy { color: rgba(201, 212, 207, 0.66); }
.footer-legal { color: rgba(201, 212, 207, 0.86); }
.footer-note { color: rgba(201, 212, 207, 0.55); }

/* ---------- 8. 返回顶部（脚本注入） ---------- */
.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 70;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: rgba(21, 36, 61, 0.94);
  color: var(--cold);
  border: 1px solid rgba(53, 224, 193, 0.42);
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.26s var(--ease), transform 0.26s var(--ease), background-color 0.2s var(--ease);
}
.to-top[data-visible] { opacity: 1; transform: none; pointer-events: auto; }
.to-top:hover { background: rgba(53, 224, 193, 0.18); }

/* ---------- 9. 显现（页面阶段挂 data-reveal） ---------- */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.42s var(--ease), transform 0.42s var(--ease);
}
.js-ready [data-reveal].is-visible { opacity: 1; transform: none; }

/* 目录跟随高亮（页面阶段挂 data-toc-link） */
[data-toc-link].is-active { color: var(--cold); }

/* ---------- 10. 响应式 ---------- */
@media (max-width: 1120px) {
  .nav-link { font-size: 14px; padding: 8px 7px; }
  .nav-link::after { left: 7px; right: 7px; }
}

@media (max-width: 1023px) {
  :root { --header-h: 64px; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    z-index: 95;
    width: min(360px, 88vw);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 20px clamp(18px, 5vw, 28px) 40px;
    background: var(--dusk);
    border-left: 1px solid var(--line);
    box-shadow: -30px 0 70px rgba(0, 0, 0, 0.5);
    overflow-y: auto;
    transform: translateX(103%);
    transition: transform 0.34s var(--ease);
  }
  .site-nav[data-open] { transform: translateX(0); }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }
  .nav-link {
    display: block;
    padding: 14px 6px;
    font-size: 16.5px;
    border-bottom: 1px solid var(--line-soft);
  }
  .nav-link::after { display: none; }
  .nav-link[aria-current="page"] {
    color: var(--amber);
    background: rgba(231, 169, 59, 0.08);
    padding-left: 12px;
    border-left: 2px solid var(--amber);
  }
  .nav-cta {
    margin-top: 22px;
    width: 100%;
    padding: 14px 20px;
    font-size: 15px;
  }

  .nav-scrim {
    display: block;
    position: fixed;
    inset: var(--header-h) 0 0 0;
    z-index: 85;
    background: rgba(4, 16, 13, 0.62);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--ease);
  }
  body[data-nav-open] .nav-scrim { opacity: 1; pointer-events: auto; }
  body[data-nav-open] { overflow: hidden; }

  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-contact { grid-template-columns: minmax(0, 1fr); gap: 16px; }
}

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 780px) {
  .version-label { display: none; }
}

@media (max-width: 640px) {
  .brand-sub { display: none; }
  .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-list { grid-template-columns: minmax(0, 1fr); }
  .footer-base { flex-direction: column; align-items: flex-start; }
  .prose { font-size: 16px; }
}

@media (max-width: 420px) {
  .footer-cols { grid-template-columns: minmax(0, 1fr); }
  .nav-toggle-label { display: none; }
}

/* ---------- 11. 减少动态 ---------- */
@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;
  }
  .signal-dot { animation: none; }
  .js-ready [data-reveal] { opacity: 1; transform: none; }
}