/* ==========================================================================
   诺亚体育官方中文站 · 共享站点样式 /assets/site.css
   深空蓝基底 + 荧光青 / 琥珀橙双强调 · 锐利直角 · 1px 精密网格
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --bg: #050B1F;
  --bg-alt: #0A1230;
  --panel: #122049;
  --line: #22315E;
  --cyan: #35F2E0;
  --cyan-dim: #14A79E;
  --amber: #FFB020;
  --ink: #EAF1FB;
  --muted: #9AABC9;
  --coral: #FF6B6B;

  --font-display: "Inter", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Courier New", monospace;

  --shell: 1280px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 2px;
  --dur: 180ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4, p, figure, blockquote, dl, dd, hr { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; }
img, svg, video { display: block; max-width: 100%; height: auto; }
table { border-collapse: collapse; width: 100%; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 3. 中文排版基准 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--ink);
}
h1 { font-weight: 800; font-size: clamp(2.25rem, 5vw, 3.5rem); line-height: 1.02; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2rem); line-height: 1.15; }
h3 { font-size: clamp(1.125rem, 1.8vw, 1.375rem); }
p { max-width: 38em; }
.prose { max-width: 34em; color: var(--ink); }
.prose p + p { margin-top: 1em; }
.text-muted { color: var(--muted); }
.mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}
.rule { height: 1px; border: 0; background: var(--line); }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px;
  padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- 4. 容器与章节 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.shell--narrow { max-width: 820px; }

.section {
  padding-block: clamp(48px, 7vw, 96px);
  border-top: 1px solid var(--line);
}
.section--alt { background: var(--bg-alt); }
.section--tight { padding-block: clamp(24px, 3vw, 40px); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 20px;
  margin-bottom: clamp(24px, 4vw, 48px);
}
.section-index {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  border: 1px solid var(--line);
  padding: 2px 8px;
}
.section-title { font-size: clamp(1.6rem, 2.6vw, 2rem); font-weight: 700; }
.section-note {
  flex: 1 1 220px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 46ch;
}

/* ---------- 5. 栅格 ---------- */
.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.btn:hover { border-color: var(--cyan); color: var(--cyan); }
.btn--amber {
  background: var(--amber);
  border-color: var(--amber);
  color: #050B1F;
}
.btn--amber:hover {
  background: #FFC65C;
  border-color: #FFC65C;
  color: #050B1F;
}
.btn--ghost { background: transparent; }
.btn--sm { padding: 8px 14px; font-size: 13.5px; }
.btn--block { width: 100%; }

/* ---------- 7. 标签与数据 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
}
.tag--cyan { color: var(--cyan); border-color: var(--cyan-dim); }
.tag--amber { color: var(--amber); border-color: rgba(255, 176, 32, 0.5); }

.stat {
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  background: var(--panel);
}
.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.2;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.stat__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 8. 卡片三段式 ---------- */
.card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(16px, 2vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: border-color var(--dur) var(--ease);
}
.card:hover { border-color: var(--cyan); }
.card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.card__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.35;
}
.card__params {
  display: flex;
  flex-direction: column;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
}
.param {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 6px 0;
  border-bottom: 1px solid var(--line);
}
.param:last-child { border-bottom: 0; }
.param__key { color: var(--muted); }
.param__val { color: var(--ink); font-variant-numeric: tabular-nums; }
.param__val--cyan { color: var(--cyan); }
.param__val--amber { color: var(--amber); }
.card__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: 4px;
}

/* ---------- 9. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.media-frame__inner {
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  background-color: var(--bg-alt);
  background-image: repeating-linear-gradient(135deg, rgba(53, 242, 224, 0.07) 0 1px, transparent 1px 12px);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame__caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}
.media-frame--wide .media-frame__inner { aspect-ratio: 21 / 9; }
.media-frame--tall .media-frame__inner { aspect-ratio: 3 / 4; }
.media-frame--square .media-frame__inner { aspect-ratio: 1 / 1; }

/* ---------- 10. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
}
.breadcrumb__link { color: var(--muted); transition: color var(--dur) var(--ease); }
.breadcrumb__link:hover { color: var(--cyan); }
.breadcrumb__sep { color: var(--line); }
.breadcrumb__current { color: var(--ink); }

/* ---------- 11. 标签页 ---------- */
.tabs {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-alt);
}
.tabs__list {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
}
.tabs__tab {
  flex: 1 1 auto;
  min-width: 128px;
  padding: 12px 18px;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.tabs__tab:hover { color: var(--ink); background: rgba(53, 242, 224, 0.05); }
.tabs__tab[aria-selected="true"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  background: rgba(53, 242, 224, 0.07);
}
.tabs__panel { padding: clamp(16px, 2.4vw, 28px); }
.tabs__panel[hidden] { display: none; }

/* ---------- 12. 折叠面板 ---------- */
.accordion {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.accordion__item + .accordion__item { border-top: 1px solid var(--line); }
.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 18px;
  text-align: left;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.accordion__trigger:hover { color: var(--cyan); background: rgba(53, 242, 224, 0.05); }
.accordion__trigger::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}
.accordion__trigger[aria-expanded="true"]::after { content: "–"; }
.accordion__panel {
  padding: 0 18px 18px;
  font-size: 15px;
  color: var(--muted);
}
.accordion__panel[hidden] { display: none; }

/* ---------- 13. 时间轴 / 更新日志 ---------- */
.log {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-left: 20px;
  border-left: 1px solid var(--line);
}
.log__item { position: relative; }
.log__item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 9px;
  width: 9px;
  height: 9px;
  border: 1px solid var(--cyan);
  background: var(--bg);
  transform: rotate(45deg);
}
.log__time {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--cyan);
}
.log__title { font-weight: 700; color: var(--ink); }
.log__text { font-size: 15px; color: var(--muted); }

/* ---------- 14. 显现动效 ---------- */
html[data-motion="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
}
html[data-motion="on"] [data-reveal].is-visible {
  opacity: 1;
  transform: none;
  transition: opacity 320ms var(--ease), transform 320ms var(--ease);
}

/* ---------- 15. 头部 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -72px;
  z-index: 120;
  padding: 10px 16px;
  background: var(--cyan);
  color: #050B1F;
  font-family: var(--font-display);
  font-weight: 700;
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(5, 11, 31, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.header-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: clamp(12px, 2vw, 32px);
  padding-block: 14px;
  transition: padding var(--dur) var(--ease);
}

.brand-mark { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark__glyph {
  display: grid;
  place-items: center;
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  border: 1px solid var(--cyan-dim);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  line-height: 1;
}
.brand-mark__text { display: flex; flex-direction: column; min-width: 0; }
.brand-mark__name {
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand-mark__tag { font-size: 12.5px; line-height: 1.5; color: var(--muted); white-space: nowrap; }

.header-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  white-space: nowrap;
  max-width: none;
}
.status-dot {
  width: 7px;
  height: 7px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  animation: pulse 2.4s infinite;
}
.header-status__label { color: var(--muted); }
.header-status__value { color: var(--ink); font-variant-numeric: tabular-nums; }

.header-actions { display: flex; align-items: center; gap: 10px; }
.header-mail {
  padding-bottom: 2px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.header-mail:hover { color: var(--cyan); border-bottom-color: var(--cyan-dim); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--ink);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle__bars { display: flex; flex-direction: column; gap: 3px; width: 16px; }
.nav-toggle__bars i { display: block; height: 1.5px; background: currentColor; }

.site-nav { border-top: 1px solid var(--line); }
.site-nav__list { display: flex; flex-wrap: wrap; align-items: stretch; gap: clamp(4px, 1.6vw, 22px); }
.site-nav__item { display: flex; }
.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 12px 4px;
  border-bottom: 2px solid transparent;
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.site-nav__link:hover { color: var(--cyan); border-bottom-color: var(--cyan-dim); }
.site-nav__link[aria-current="page"] { color: var(--cyan); border-bottom-color: var(--cyan); }
.site-nav__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}
.site-nav__link:hover .site-nav__index,
.site-nav__link[aria-current="page"] .site-nav__index { color: var(--cyan); }

.scroll-meter {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
}
.scroll-meter__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.site-header[data-compact] .header-top { padding-block: 8px; }
.site-header[data-compact] .brand-mark__tag,
.site-header[data-compact] .header-status { display: none; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
@keyframes panel-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---------- 16. 页脚 ---------- */
.site-footer {
  margin-top: clamp(48px, 7vw, 96px);
  border-top: 1px solid var(--line);
  background: var(--bg-alt);
  color: var(--muted);
  font-size: 14px;
}

.footer-return {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-block: 16px;
  border-bottom: 1px solid var(--line);
}
.footer-return__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--cyan);
  border: 1px solid var(--line);
  padding: 2px 8px;
}
.footer-return__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}
.footer-return__link::after {
  content: "↗";
  font-family: var(--font-mono);
  color: var(--cyan);
}
.footer-return__link:hover { color: var(--cyan); }

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
  padding-block: clamp(28px, 4vw, 48px);
}
.footer-brand__name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.footer-brand__desc {
  margin-top: 10px;
  max-width: 34em;
  line-height: 1.85;
  color: var(--muted);
}
.footer-brand__meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan-dim);
  max-width: none;
}

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}
.footer-col__list { display: flex; flex-direction: column; gap: 10px; }
.footer-link {
  border-bottom: 1px solid transparent;
  color: var(--muted);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.footer-link:hover { color: var(--cyan); border-bottom-color: var(--cyan-dim); }

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  padding-block: 18px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink);
}
.footer-contact__item { display: inline-flex; align-items: baseline; gap: 10px; max-width: none; }
.footer-contact__key { color: var(--muted); }

.footer-address {
  padding-bottom: 6px;
  font-size: 13px;
  color: var(--muted);
  max-width: none;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-block: 18px;
  border-top: 1px solid var(--line);
}
.footer-note { max-width: 60ch; font-size: 13px; line-height: 1.8; color: var(--muted); }
.footer-legal {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  max-width: none;
}

.to-top {
  position: fixed;
  right: clamp(12px, 3vw, 28px);
  bottom: clamp(12px, 3vw, 28px);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.to-top[data-visible] { opacity: 1; visibility: visible; }
.to-top:hover { border-color: var(--cyan); color: var(--cyan); }

/* ---------- 17. 响应式 ---------- */
@media (max-width: 1000px) {
  .span-3, .span-4, .span-5, .span-6 { grid-column: span 6; }
  .span-7, .span-8, .span-9 { grid-column: span 12; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .header-top { grid-template-columns: minmax(0, 1fr) auto; row-gap: 10px; }
  .header-status { display: none; }
  .header-mail { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
    padding: 6px var(--gutter) 20px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: var(--bg-alt);
  }
  .site-header[data-open] .site-nav { display: block; animation: panel-in 160ms var(--ease); }
  .site-nav__list { flex-direction: column; gap: 0; }
  .site-nav__link {
    width: 100%;
    padding: 14px 12px;
    border-bottom: 1px solid var(--line);
    border-left: 2px solid transparent;
    font-size: 15px;
  }
  .site-nav__link:hover,
  .site-nav__link[aria-current="page"] {
    border-bottom-color: var(--line);
    border-left-color: var(--cyan);
    background: rgba(53, 242, 224, 0.06);
  }
  .site-nav__item:last-child .site-nav__link { border-bottom: 0; }
}

@media (max-width: 640px) {
  .span-3, .span-4, .span-5, .span-6 { grid-column: span 12; }
  .brand-mark__tag { display: none; }
  .brand-mark__name { font-size: 15px; }
  .header-actions .btn--sm { padding: 8px 12px; font-size: 12.5px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .tabs__tab { flex: 0 0 auto; }
}

/* ---------- 18. 无障碍与减少动效 ---------- */
@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;
  }
  html[data-motion="on"] [data-reveal] { opacity: 1; transform: none; }
  .scroll-meter__bar { transition: none; }
}