/* =========================================================
   悟空体育 · 共享样式表 /assets/site.css
   深空蓝底盘 · 鎏金单点高亮 · 12° 斜切视线引导
   ========================================================= */

/* ---------- 1. 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #0A1633;
  --ink-800: #12224A;
  --ink-700: #1E3163;
  --gold: #E9B949;
  --gold-soft: #F7D98B;
  --flame: #FF6B35;
  --jade: #7FD8C0;
  --cloud: #EEF2FA;
  --ash: #8E9BB5;

  --line: rgba(30, 49, 99, 0.92);
  --line-soft: rgba(142, 155, 181, 0.14);
  --line-mid: rgba(142, 155, 181, 0.26);
  --panel-tint: rgba(18, 34, 74, 0.66);

  --font-display: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --font-body: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --container: 1280px;
  --gutter: clamp(16px, 4vw, 48px);
  --radius: 3px;
  --skew: -12deg;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

/* ---------- 3. 基座 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    repeating-linear-gradient(108deg, rgba(142, 155, 181, 0.045) 0 1px, transparent 1px 38px),
    radial-gradient(1100px 620px at 88% -8%, rgba(233, 185, 73, 0.10), transparent 62%),
    radial-gradient(820px 520px at 4% 10%, rgba(127, 216, 192, 0.055), transparent 66%);
  background-repeat: repeat, no-repeat, no-repeat;
  color: var(--cloud);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: rgba(233, 185, 73, 0.28); color: #fff; }

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

/* ---------- 4. 排版 ---------- */
.display {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(40px, 8vw, 118px);
  line-height: 1.02;
  letter-spacing: -0.01em;
}
.h-section {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.25;
  letter-spacing: 0.01em;
}
.kicker {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--ash);
}
.section-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
  text-transform: uppercase;
}
.lede {
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.8;
  color: rgba(238, 242, 250, 0.78);
  max-width: 62ch;
}
.num {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}
.rule-gold {
  width: 64px;
  height: 2px;
  background: var(--gold);
  transform: skewX(var(--skew));
  border: 0;
}
.hairline {
  height: 1px;
  border: 0;
  background: var(--line-soft);
}

/* ---------- 5. 布局 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section {
  position: relative;
  padding-block: clamp(48px, 7vw, 104px);
  border-top: 1px solid var(--line-soft);
}
.section--flush { border-top: 0; }
.section--tight { padding-block: clamp(28px, 4vw, 56px); }
.section--stack {
  background-image: linear-gradient(180deg, rgba(18, 34, 74, 0.55), rgba(10, 22, 51, 0));
}
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
}
.grid--main { grid-template-columns: minmax(0, 7fr) minmax(0, 3fr); }
.grid--thirds { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--halves { grid-template-columns: repeat(2, minmax(0, 1fr)); }

/* ---------- 6. 面板 ---------- */
.panel {
  position: relative;
  padding: clamp(20px, 3vw, 34px);
  background-image: linear-gradient(180deg, rgba(18, 34, 74, 0.78), rgba(18, 34, 74, 0.42));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.16s var(--ease), border-color 0.16s var(--ease), background-color 0.16s var(--ease);
}
.panel:hover { transform: translateY(-2px); border-color: rgba(233, 185, 73, 0.5); }
.panel--tight { padding: clamp(14px, 1.8vw, 22px); }
.panel--accent { border-color: rgba(233, 185, 73, 0.55); }
.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 18px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line-soft);
}
.panel__body > * + * { margin-top: 1.1em; }
.panel__foot {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--ash);
}

/* ---------- 7. 目录列表 ---------- */
.dir-list { border-top: 1px solid var(--line-soft); }
.dir-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  gap: 8px 18px;
  align-items: baseline;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line-soft);
  transition: background-color 0.16s var(--ease), padding-left 0.16s var(--ease);
}
.dir-item:hover { background-color: rgba(233, 185, 73, 0.06); padding-left: 12px; }
.dir-item__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}
.dir-item__title {
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--cloud);
}
.dir-item__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ash);
}

/* ---------- 8. 数据 ---------- */
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 2.6vw, 34px);
  line-height: 1.1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.stat__label {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ash);
}
.meter {
  position: relative;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(142, 155, 181, 0.16);
}
.meter__fill {
  display: block;
  height: 100%;
  width: var(--meter-value, 0%);
  background-image: linear-gradient(90deg, var(--jade), var(--gold) 65%, var(--gold-soft));
  transition: width 0.6s var(--ease);
}
.meter--alert .meter__fill { background-image: linear-gradient(90deg, var(--flame), var(--gold)); }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line-mid);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ash);
}
.tag--jade { border-color: rgba(127, 216, 192, 0.5); color: var(--jade); }
.tag--flame { border-color: rgba(255, 107, 53, 0.5); color: var(--flame); }

/* ---------- 9. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 13px;
  letter-spacing: 0.12em;
  line-height: 1.4;
  white-space: nowrap;
  transition: background-color 0.16s var(--ease), color 0.16s var(--ease),
              border-color 0.16s var(--ease), transform 0.16s var(--ease);
}
.btn--gold { background-color: var(--gold); color: var(--ink-900); font-weight: 600; }
.btn--gold:hover { background-color: var(--gold-soft); transform: translateY(-1px); }
.btn--ghost { border-color: rgba(233, 185, 73, 0.55); color: var(--gold); }
.btn--ghost:hover { background-color: rgba(233, 185, 73, 0.12); color: var(--gold-soft); }
.btn--block { width: 100%; }

/* ---------- 10. 面包屑 ---------- */
.breadcrumb {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ash);
}
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 2px; }
.breadcrumb li { display: inline-flex; align-items: center; }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-inline: 8px; opacity: 0.45; }
.breadcrumb a:hover { color: var(--gold-soft); }
.breadcrumb [aria-current="page"] { color: var(--cloud); }

/* ---------- 11. 正文 ---------- */
.prose { max-width: 72ch; }
.prose > * + * { margin-top: 1.2em; }
.prose h2 {
  margin-top: 1.9em;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.3;
}
.prose h3 {
  margin-top: 1.7em;
  font-size: 19px;
  letter-spacing: 0.02em;
}
.prose ul li { position: relative; padding-left: 22px; }
.prose ul li + li { margin-top: 0.5em; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background: var(--gold);
}
.prose a { color: var(--gold-soft); border-bottom: 1px solid rgba(233, 185, 73, 0.45); }
.prose a:hover { color: var(--gold); }
.prose strong { color: var(--gold-soft); font-weight: 600; }

/* ---------- 12. 图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--ink-800);
}
.media-frame > img,
.media-frame > video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--banner { aspect-ratio: 21 / 9; }
.media-frame--cut { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 54px), 0 100%); }
.media-frame__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(127, 216, 192, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127, 216, 192, 0.16) 1px, transparent 1px);
  background-size: 52px 52px;
  mix-blend-mode: screen;
  opacity: 0.55;
}
.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 16px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cloud);
  background-image: linear-gradient(180deg, transparent, rgba(10, 22, 51, 0.85));
}
.media-frame__placeholder {
  display: grid;
  place-items: center;
  height: 100%;
  min-height: 160px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ash);
  background-image: repeating-linear-gradient(108deg, rgba(142, 155, 181, 0.08) 0 1px, transparent 1px 22px);
}

/* ---------- 13. 装饰 ---------- */
.slant-block {
  position: absolute;
  right: -6%;
  bottom: 0;
  width: min(560px, 62%);
  height: 120%;
  pointer-events: none;
  transform: skewX(var(--skew));
  background-image: linear-gradient(135deg, rgba(233, 185, 73, 0.15), rgba(233, 185, 73, 0) 62%);
}

/* ---------- 14. 页头 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: 8px;
  z-index: 90;
  padding: 10px 16px;
  background-color: var(--gold);
  color: var(--ink-900);
  font-size: 13px;
  letter-spacing: 0.1em;
  border-radius: 2px;
  transform: translateY(-220%);
  transition: transform 0.16s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: rgba(10, 22, 51, 0.96);
  border-bottom: 1px solid var(--line);
  transition: transform 0.32s var(--ease);
}
.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(142, 155, 181, 0.12);
}
.site-header[data-tucked="true"] { transform: translateY(-100%); }

.header-top {
  overflow: hidden;
  max-height: 96px;
  border-bottom: 1px solid var(--line-soft);
  transition: max-height 0.3s var(--ease), opacity 0.24s var(--ease);
}
.site-header[data-condensed="true"] .header-top {
  max-height: 0;
  opacity: 0;
  border-color: transparent;
}
.header-top__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  min-height: 64px;
  padding-block: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.brand-mark {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  background-image: linear-gradient(135deg, var(--gold-soft), var(--gold));
  clip-path: polygon(50% 0, 100% 26%, 100% 74%, 50% 100%, 0 74%, 0 26%);
  transition: transform 0.2s var(--ease);
}
.brand:hover .brand-mark { transform: skewX(var(--skew)); }
.brand-text {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--cloud);
}
.brand-line {
  padding-left: 12px;
  border-left: 1px solid rgba(233, 185, 73, 0.45);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ash);
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line-mid);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.08em;
}
.meta-chip__key { color: var(--ash); }
.meta-chip__val { color: var(--cloud); }
.meta-link {
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(233, 185, 73, 0.5);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cloud);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.meta-link:hover { color: var(--gold-soft); border-color: var(--gold-soft); }

.header-nav {
  position: relative;
  background-color: rgba(18, 34, 74, 0.5);
}
.header-nav__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 58px;
  padding-block: 6px;
  transition: min-height 0.3s var(--ease);
}
.site-header[data-condensed="true"] .header-nav__inner { min-height: 46px; }
.site-nav { flex: 1 1 auto; }
.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 26px;
}
.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--ash);
  transition: color 0.16s var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 2px;
  height: 2px;
  background: var(--gold);
  transform: skewX(var(--skew));
  transition: right 0.24s var(--ease);
}
.nav-link:hover { color: var(--cloud); }
.nav-link:hover::after { right: 0; }
.nav-link[aria-current="page"] { color: var(--gold); }
.nav-link[aria-current="page"]::after { right: 0; background: var(--gold-soft); }
.header-nav__cta { flex: 0 0 auto; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid var(--line-mid);
  border-radius: 2px;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--cloud);
}
.nav-toggle:hover { border-color: rgba(233, 185, 73, 0.55); color: var(--gold-soft); }
.nav-toggle__bars { position: relative; width: 16px; height: 10px; }
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gold);
  transition: transform 0.2s var(--ease), top 0.2s var(--ease), bottom 0.2s var(--ease);
}
.nav-toggle__bars::before { top: 1px; }
.nav-toggle__bars::after { bottom: 1px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 50%; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { bottom: calc(50% - 1px); transform: rotate(-45deg); }

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background-image: linear-gradient(90deg, var(--jade), var(--gold) 55%, var(--gold-soft));
  transition: transform 0.1s linear;
}

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 120px);
  overflow: hidden;
  border-top: 1px solid var(--line);
  background-image: linear-gradient(180deg, rgba(18, 34, 74, 0.85), var(--ink-900) 72%);
}
.footer-backdrop {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(115deg, rgba(233, 185, 73, 0.06) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(0deg, rgba(233, 185, 73, 0.06) 0 1px, transparent 1px 74px),
    radial-gradient(70% 120% at 18% 100%, rgba(233, 185, 73, 0.09), transparent 62%);
}
.footer-inner {
  position: relative;
  padding-block: clamp(40px, 6vw, 76px) 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.2fr);
  gap: clamp(24px, 3vw, 44px);
}
.footer-brand .brand-mark { width: 18px; height: 18px; }
.brand--footer .brand-text { font-size: 22px; }
.footer-brand__line {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ash);
}
.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(238, 242, 250, 0.8);
}
.footer-contact__label {
  flex: 0 0 auto;
  min-width: 4.5em;
  color: var(--ash);
  letter-spacing: 0.1em;
}
.footer-contact--addr { color: rgba(238, 242, 250, 0.66); }
.footer-col__title {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.24em;
  color: var(--gold);
}
.footer-list li + li { margin-top: 10px; }
.footer-list a {
  display: inline-block;
  font-size: 14px;
  color: rgba(238, 242, 250, 0.74);
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), transform 0.16s var(--ease);
}
.footer-list a:hover {
  color: var(--gold-soft);
  border-color: rgba(233, 185, 73, 0.5);
  transform: translateX(3px);
}
.footer-col--cta .footer-col__note {
  margin-bottom: 18px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--ash);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 26px;
  margin-top: clamp(32px, 4vw, 56px);
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}
.footer-legal {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ash);
}
.footer-legal--links { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.footer-legal__link {
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.footer-legal__link:hover { color: var(--gold-soft); border-color: rgba(233, 185, 73, 0.5); }
.footer-legal--icp { color: rgba(142, 155, 181, 0.85); }

.to-top {
  position: fixed;
  right: clamp(16px, 3vw, 34px);
  bottom: clamp(16px, 3vw, 34px);
  z-index: 70;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: 1px solid rgba(233, 185, 73, 0.55);
  background-color: var(--ink-800);
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.08em;
  box-shadow: 0 14px 30px rgba(3, 8, 22, 0.55);
  transition: background-color 0.16s var(--ease), color 0.16s var(--ease), transform 0.16s var(--ease);
}
.to-top:hover { background-color: var(--gold); color: var(--ink-900); transform: translateY(-2px); }

/* ---------- 16. 进场 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
html.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 17. 响应式 ---------- */
@media (max-width: 1100px) {
  .nav-list { gap: 4px 16px; }
  .nav-link { font-size: 13px; }
  .footer-grid { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr); }
  .footer-col--cta { grid-column: 1 / -1; }
}

@media (max-width: 960px) {
  .grid--main,
  .grid--thirds,
  .grid--halves { grid-template-columns: minmax(0, 1fr); }

  .nav-toggle { display: inline-flex; }
  .header-top { max-height: 130px; }
  .header-nav__inner { gap: 12px; justify-content: space-between; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
    padding: 6px var(--gutter) 18px;
    background-color: var(--ink-800);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 26px 44px rgba(3, 8, 22, 0.62);
  }
  .site-nav[data-open="true"] { display: block; }

  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-link {
    display: block;
    padding: 14px 4px;
    font-size: 15px;
    border-bottom: 1px solid var(--line-soft);
  }
  .nav-link::after { display: none; }
  .nav-link[aria-current="page"] {
    padding-left: 12px;
    border-left: 2px solid var(--gold);
    color: var(--gold);
  }
  .header-nav__cta { padding-inline: 14px; }
}

@media (max-width: 720px) {
  .brand-line { display: none; }
  .meta-chip { display: none; }
  .header-top__inner { min-height: 56px; padding-block: 10px; }
  .header-nav__cta { font-size: 12px; letter-spacing: 0.08em; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .dir-item { grid-template-columns: 48px minmax(0, 1fr); }
  .dir-item__meta { grid-column: 2 / -1; }
  .display { font-size: clamp(34px, 12vw, 60px); }
}

/* ---------- 18. 无障碍与减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  html.js [data-reveal] { opacity: 1; transform: none; }
  .site-header[data-tucked="true"] { transform: none; }
}