/* ==========================================================================
   皇冠足球 · 共享样式表  /assets/site.css
   夜战金冠：深墨绿夜色底 + 聚光灯晕 + 草皮斜纹 + 金属皇冠线描
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body { margin: 0; }

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { 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; cursor: pointer; }

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

hr { border: 0; border-top: 1px solid var(--hairline); margin: 0; }

/* ---------- 2. Tokens ---------- */
:root {
  /* 自然矿物色 + 夜战氛围 */
  --c-night: #07110F;
  --c-panel: #0E2A22;
  --c-moss: #24422F;
  --c-rock: #6E7370;
  --c-cream: #F2EDE2;
  --c-gold: #C9A227;
  --c-gold-hi: #E8C766;
  --c-turf: #7CE04A;
  --c-red: #D9694F;
  --c-red-deep: #B4432E;
  --c-white: #FFFFFF;

  --glass: rgba(242, 237, 226, 0.08);
  --glass-line: rgba(201, 162, 39, 0.35);
  --hairline: rgba(242, 237, 226, 0.12);
  --hairline-soft: rgba(242, 237, 226, 0.07);

  --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", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --rail-w: 72px;
  --maxw: 1180px;
  --gutter: clamp(16px, 4vw, 40px);
  --section-gap: clamp(64px, 9vw, 112px);
  --radius: 2px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. Base ---------- */
body {
  min-height: 100vh;
  color: var(--c-cream);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  background-color: var(--c-night);
  background-image:
    radial-gradient(1100px 620px at 50% -12%, rgba(201, 162, 39, 0.10), transparent 62%),
    radial-gradient(760px 480px at 88% 6%, rgba(124, 224, 74, 0.055), transparent 60%),
    repeating-linear-gradient(112deg, rgba(242, 237, 226, 0.028) 0 2px, transparent 2px 18px);
  background-attachment: scroll;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
}

/* ---------- 4. 排版 ---------- */
.h1,
.h2,
.h3,
.display {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.12;
  color: var(--c-cream);
}

.h1, .display { font-size: clamp(30px, 4.6vw, 64px); }
.h2 { font-size: clamp(24px, 2.8vw, 38px); }
.h3 { font-size: clamp(19px, 1.6vw, 22px); line-height: 1.3; }

.prose {
  max-width: 38em;
  font-size: clamp(16px, 0.35vw + 15px, 18px);
  line-height: 1.75;
  color: rgba(242, 237, 226, 0.86);
}

.prose p + p { margin-top: 1.2em; }
.prose strong { color: var(--c-cream); font-weight: 700; }

.mono {
  font-family: var(--font-mono);
  font-size: 0.94em;
  letter-spacing: 0.04em;
}

.index-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-gold);
  line-height: 1.6;
}

.muted { color: rgba(242, 237, 226, 0.58); }

.accent-gold { color: var(--c-gold-hi); }
.accent-turf { color: var(--c-turf); }
.accent-red { color: var(--c-red); }

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

/* ---------- 5. 布局容器 ---------- */
.container,
.section {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: 0; }
.section + .section { margin-top: var(--section-gap); }

.section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 28px);
  align-items: start;
  margin-bottom: clamp(24px, 3vw, 40px);
}

.section-head__body { min-width: 0; }

.section-head__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 2.8vw, 38px);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.section-head__desc {
  margin-top: 10px;
  max-width: 38em;
  color: rgba(242, 237, 226, 0.66);
  font-size: 15px;
  line-height: 1.7;
}

.slant {
  clip-path: polygon(0 0, 100% 3.5%, 100% 100%, 0 96.5%);
}

/* ---------- 6. Skip link ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -72px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--c-gold-hi);
  color: #0B1714;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  transition: top 0.2s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { top: 12px; }

/* ---------- 7. 左侧品牌轨道 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
}

.rail {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 90;
  width: var(--rail-w);
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 20px 0 24px;
  background: linear-gradient(180deg, rgba(14, 42, 34, 0.92), rgba(7, 17, 15, 0.98));
  border-right: 1px solid var(--hairline);
}

@media (min-width: 1024px) {
  .rail { display: flex; }
}

.rail__crown {
  color: var(--c-gold);
  width: 26px;
  filter: drop-shadow(0 2px 6px rgba(201, 162, 39, 0.35));
}

.rail__crown svg { width: 26px; height: auto; }

.rail__name {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.42em;
  color: rgba(242, 237, 226, 0.66);
}

.rail__track {
  position: relative;
  flex: 1 1 auto;
  width: 2px;
  min-height: 80px;
  margin-top: 4px;
  background: rgba(242, 237, 226, 0.10);
  border-radius: 2px;
  overflow: hidden;
}

.rail__fill {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 0;
  background: linear-gradient(180deg, var(--c-gold-hi), var(--c-gold));
  border-radius: 2px;
  transition: height 0.12s linear;
}

.rail__label {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.34em;
  color: rgba(242, 237, 226, 0.34);
}

/* ---------- 8. 刊头 / 报头导航 ---------- */
.masthead {
  position: relative;
  background: linear-gradient(180deg, rgba(7, 17, 15, 0.97) 0%, rgba(7, 17, 15, 0.82) 70%, rgba(7, 17, 15, 0) 100%);
  transition: background 0.32s var(--ease), border-color 0.32s var(--ease), box-shadow 0.32s var(--ease);
  border-bottom: 1px solid transparent;
}

.masthead[data-collapsed="true"] {
  background:
    linear-gradient(180deg, rgba(242, 237, 226, 0.08), rgba(242, 237, 226, 0.03)),
    rgba(7, 17, 15, 0.74);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  backdrop-filter: blur(16px) saturate(130%);
  border-bottom-color: var(--glass-line);
  box-shadow: 0 10px 34px -22px rgba(0, 0, 0, 0.95);
}

.masthead__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-areas:
    "lead brand cta"
    "nav nav nav";
  align-items: center;
  row-gap: clamp(6px, 1vw, 14px);
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(16px, 2.2vw, 28px) var(--gutter) clamp(8px, 1.2vw, 12px);
  transition: padding 0.32s var(--ease);
}

.masthead[data-collapsed="true"] .masthead__inner {
  padding-top: 9px;
  padding-bottom: 7px;
  row-gap: 4px;
}

.masthead__brand {
  grid-area: brand;
  justify-self: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  line-height: 1.08;
}

.masthead__mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.2vw, 38px);
  letter-spacing: -0.02em;
  color: var(--c-cream);
  transition: font-size 0.32s var(--ease), color 0.2s var(--ease);
}

.masthead__brand:hover .masthead__mark { color: var(--c-gold-hi); }

.masthead[data-collapsed="true"] .masthead__mark { font-size: 20px; }

.masthead__kicker {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.30em;
  text-transform: uppercase;
  color: rgba(201, 162, 39, 0.82);
  max-height: 20px;
  overflow: hidden;
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), max-height 0.28s var(--ease);
}

.masthead[data-collapsed="true"] .masthead__kicker {
  opacity: 0;
  transform: translateY(-4px);
  max-height: 0;
}

.masthead__cta {
  grid-area: cta;
  justify-self: end;
}

/* ---------- 9. 导航 ---------- */
.site-nav {
  grid-area: nav;
  justify-self: center;
  width: 100%;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: clamp(2px, 1.4vw, 16px);
}

.site-nav__list a {
  position: relative;
  display: inline-block;
  padding: 6px 10px;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: rgba(242, 237, 226, 0.74);
  transition: color 0.2s var(--ease);
}

.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 1px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-gold), var(--c-gold-hi));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s var(--ease);
}

.site-nav__list a:hover { color: var(--c-cream); }
.site-nav__list a:hover::after { transform: scaleX(1); }

.site-nav__list a[aria-current="page"] { color: var(--c-gold-hi); }
.site-nav__list a[aria-current="page"]::after { transform: scaleX(1); }

/* 移动导航按钮 */
.nav-toggle {
  grid-area: cta;
  justify-self: end;
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  background: rgba(14, 42, 34, 0.6);
  color: var(--c-gold-hi);
  font-size: 13px;
  letter-spacing: 0.1em;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.24s var(--ease), opacity 0.24s var(--ease);
}

.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 10. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.4;
  cursor: pointer;
  transition: color 0.22s var(--ease), background 0.22s var(--ease),
              border-color 0.22s var(--ease), transform 0.22s var(--ease),
              box-shadow 0.22s var(--ease);
}

.btn--gold {
  color: var(--c-gold-hi);
  border-color: var(--glass-line);
  background: linear-gradient(180deg, rgba(201, 162, 39, 0.16), rgba(201, 162, 39, 0.05));
}

.btn--gold:hover {
  color: #0B1714;
  border-color: var(--c-gold-hi);
  background: linear-gradient(180deg, var(--c-gold-hi), var(--c-gold));
  box-shadow: 0 12px 26px -18px rgba(232, 199, 102, 0.9);
}

.btn--solid {
  color: #0B1714;
  background: linear-gradient(180deg, var(--c-gold-hi), var(--c-gold));
  border-color: var(--c-gold-hi);
}

.btn--solid:hover { transform: translateY(-2px); }

.btn--ghost {
  color: var(--c-cream);
  border-color: var(--hairline);
  background: rgba(14, 42, 34, 0.55);
}

.btn--ghost:hover {
  color: var(--c-gold-hi);
  border-color: var(--glass-line);
  background: rgba(14, 42, 34, 0.9);
}

/* ---------- 11. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid rgba(124, 224, 74, 0.34);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-turf);
  line-height: 1.6;
}

.tag--gold { border-color: var(--glass-line); color: var(--c-gold-hi); }
.tag--red { border-color: rgba(217, 105, 79, 0.42); color: var(--c-red); }
.tag--rock { border-color: rgba(110, 115, 112, 0.5); color: rgba(242, 237, 226, 0.62); }

/* ---------- 12. 档案卡 ---------- */
.card {
  position: relative;
  display: block;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--c-panel);
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.card:hover,
.card:focus-within {
  transform: translateY(-4px);
  border-color: var(--glass-line);
  box-shadow: 0 20px 44px -30px rgba(0, 0, 0, 0.95);
}

.card__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.card__index {
  position: absolute;
  top: clamp(14px, 2vw, 22px);
  right: clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(242, 237, 226, 0.42);
}

.card__title {
  margin-top: 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(18px, 1.6vw, 21px);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.card__text {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(242, 237, 226, 0.68);
}

.card__meta {
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px solid var(--hairline-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(242, 237, 226, 0.5);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
}

/* ---------- 13. 图片容器基础规则 ---------- */
.media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--hairline-soft);
  background-color: var(--c-panel);
  background-image:
    radial-gradient(120% 90% at 20% 0%, rgba(201, 162, 39, 0.16), transparent 60%),
    repeating-linear-gradient(112deg, rgba(242, 237, 226, 0.05) 0 2px, transparent 2px 14px),
    linear-gradient(150deg, var(--c-moss), var(--c-panel) 62%, #08150F);
  isolation: isolate;
}

.media > img,
.media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media--wide { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--square { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }

.media__veil {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(7, 17, 15, 0.12) 0%, rgba(7, 17, 15, 0.30) 52%, rgba(7, 17, 15, 0.86) 100%);
}

.media__tag {
  position: absolute;
  left: 12px;
  bottom: 12px;
  right: 12px;
  padding: 8px 12px;
  background: rgba(14, 42, 34, 0.94);
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-cream);
}

/* ---------- 14. 栅格 ---------- */
.grid {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 15. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(242, 237, 226, 0.55);
}

.breadcrumb a { color: rgba(242, 237, 226, 0.74); transition: color 0.2s var(--ease); }
.breadcrumb a:hover { color: var(--c-gold-hi); }

.breadcrumb__sep {
  color: var(--c-gold);
  opacity: 0.66;
}

/* ---------- 16. 显现动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.48s var(--ease), transform 0.48s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 17. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: var(--section-gap);
  background:
    radial-gradient(900px 340px at 12% 0%, rgba(36, 66, 47, 0.55), transparent 66%),
    linear-gradient(180deg, rgba(14, 42, 34, 0.42), rgba(7, 17, 15, 0.99));
  border-top: 1px solid var(--hairline);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold) 30%, var(--c-gold-hi) 50%, var(--c-gold) 70%, transparent);
  opacity: 0.55;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.15fr;
  gap: clamp(24px, 4vw, 48px);
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 76px) var(--gutter) clamp(28px, 3.4vw, 44px);
}

.footer__brand { min-width: 0; }

.footer__crown {
  display: block;
  width: 26px;
  color: var(--c-gold);
  margin-bottom: 12px;
}

.footer__crown svg { width: 26px; height: auto; }

.footer__mark {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 2.4vw, 28px);
  letter-spacing: -0.01em;
  color: var(--c-cream);
}

.footer__tag {
  margin-top: 12px;
  max-width: 22em;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(242, 237, 226, 0.62);
}

.footer__col { min-width: 0; }

.footer__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.footer__list li + li { margin-top: 10px; }

.footer__list a {
  font-size: 15px;
  color: rgba(242, 237, 226, 0.76);
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
  border-bottom: 1px solid transparent;
}

.footer__list a:hover {
  color: var(--c-gold-hi);
  padding-left: 4px;
}

.footer__meta {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  line-height: 1.9;
  color: rgba(242, 237, 226, 0.72);
  word-break: break-word;
}

.footer__meta + .footer__meta { margin-top: 6px; }

.footer__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 18px var(--gutter) clamp(26px, 3vw, 36px);
  border-top: 1px solid var(--hairline-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(242, 237, 226, 0.55);
}

.footer__legal { color: rgba(242, 237, 226, 0.62); }
.footer__note { color: rgba(242, 237, 226, 0.44); max-width: 62ch; }

/* ---------- 18. 焦点 ---------- */
:focus-visible {
  outline: 2px solid var(--c-gold-hi);
  outline-offset: 3px;
  border-radius: var(--radius);
}

.site-nav__list a:focus-visible,
.footer__list a:focus-visible,
.masthead__brand:focus-visible {
  outline: 2px solid var(--c-gold-hi);
  outline-offset: 3px;
}

/* ---------- 19. 响应式 ---------- */
@media (max-width: 1023px) {
  .footer__inner { grid-template-columns: 1.2fr 1fr 1fr; }
  .footer__col--meta { grid-column: 1 / -1; }
}

@media (max-width: 899px) {
  .masthead__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    padding: 11px var(--gutter) 11px;
    row-gap: 10px;
  }

  .masthead__brand {
    order: 1;
    flex: 1 1 auto;
    align-items: flex-start;
    text-align: left;
    justify-self: start;
  }

  .masthead__mark { font-size: clamp(20px, 5vw, 26px); }
  .masthead[data-collapsed="true"] .masthead__mark { font-size: clamp(18px, 4.4vw, 22px); }

  .masthead__kicker { font-size: 9px; letter-spacing: 0.24em; }

  .masthead__cta {
    order: 2;
    flex: 0 0 auto;
    padding: 8px 12px;
    font-size: 13px;
    letter-spacing: 0.04em;
  }

  .nav-toggle {
    order: 3;
    display: inline-flex;
    flex: 0 0 auto;
  }

  .site-nav {
    order: 4;
    flex: 0 0 100%;
    width: 100%;
    justify-self: stretch;
  }

  .site-nav[data-open="false"] { display: none; }

  .site-nav[data-open="true"] {
    display: block;
    padding: 6px 0 12px;
    border-top: 1px solid var(--hairline);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-nav__list li { width: 100%; }

  .site-nav__list a {
    display: block;
    padding: 11px 8px;
    font-size: 16px;
    border-bottom: 1px solid var(--hairline-soft);
  }

  .site-nav__list a::after { display: none; }

  .site-nav__list a[aria-current="page"] {
    color: var(--c-gold-hi);
    background: linear-gradient(90deg, rgba(201, 162, 39, 0.12), transparent 70%);
  }

  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 30px 24px;
  }

  .footer__brand { grid-column: 1 / -1; }
  .footer__col--meta { grid-column: 1 / -1; }
}

@media (max-width: 599px) {
  .section-head { grid-template-columns: 1fr; gap: 6px; }
  .section-head .index-num { padding-top: 0; }

  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }

  .footer__inner { grid-template-columns: 1fr; }
  .footer__bar { flex-direction: column; align-items: flex-start; }
  .media__tag { font-size: 11px; }
}

/* ---------- 20. 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;
  }

  [data-reveal],
  [data-reveal].is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .rail__fill { transition: none; }
  .card:hover,
  .card:focus-within { transform: none; }
  .btn--solid:hover { transform: none; }
  .footer__list a:hover { padding-left: 0; }
}