/* ============================================================
   KI赛事 · 共享样式表 /assets/site.css
   夜间数据作战室：墨绿底 + 荧光青绿信号 + 越位琥珀
   ============================================================ */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
}
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, figcaption, blockquote, dl, dd, dt { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #0B1F1A;
  --panel: #102B24;
  --signal: #35F0B0;
  --mist: #8FF7D2;
  --amber: #FFB43A;
  --amber-soft: #FFD98A;
  --white: #EAF6F1;
  --muted: #7E9A90;
  --grid: #1E3D33;
  --coral: #FF6B5C;

  --signal-06: rgba(53, 240, 176, .06);
  --signal-12: rgba(53, 240, 176, .12);
  --signal-18: rgba(53, 240, 176, .18);
  --signal-35: rgba(53, 240, 176, .35);
  --amber-18: rgba(255, 180, 58, .18);
  --amber-40: rgba(255, 180, 58, .40);
  --ink-veil: rgba(11, 31, 26, .96);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-condensed: "Barlow Condensed", "Arial Narrow", "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, "Courier New", monospace;

  --shell-max: 1240px;
  --gutter: clamp(16px, 4vw, 32px);
  --radius: 2px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --line: 1px solid var(--grid);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    linear-gradient(180deg, rgba(53, 240, 176, .04), rgba(11, 31, 26, 0) 420px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(180deg, var(--grid) 1px, transparent 1px);
  background-size: 100% 100%, 96px 96px, 96px 96px;
  background-position: 0 0, -1px 0, 0 -1px;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-family: var(--font-condensed);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: .005em;
  color: var(--white);
}
h1 { font-size: clamp(38px, 6vw, 72px); line-height: 1.02; letter-spacing: -.01em; }
h2 { font-size: clamp(26px, 3.6vw, 42px); }
h3 { font-size: clamp(19px, 2.2vw, 24px); font-weight: 700; }
h4 { font-size: 17px; font-weight: 700; }
p { color: var(--white); }
small { font-size: 12px; }
strong { color: var(--mist); font-weight: 700; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }

/* ---------- 4. 骨架与工具 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: clamp(48px, 7vw, 88px); }
.section--tight { padding-block: clamp(28px, 4vw, 48px); }
.section__head { max-width: 760px; margin-bottom: clamp(24px, 3vw, 40px); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--signal);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--signal);
  flex: 0 0 auto;
}
.rule { height: 1px; background: var(--grid); border: 0; margin-block: clamp(24px, 3vw, 40px); }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  top: -80px;
  left: 16px;
  z-index: 90;
  padding: 10px 16px;
  background: var(--signal);
  color: #06231B;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  border-radius: var(--radius);
  transition: top .18s var(--ease);
}
.skip-link:focus { top: 10px; }

.read-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--grid);
  z-index: 80;
  pointer-events: none;
}
.read-progress__fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--mist), var(--signal) 55%, var(--amber));
  transition: width .1s linear;
}

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 16px;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .05em;
  line-height: 1;
  white-space: nowrap;
  color: var(--white);
  background: transparent;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.btn--signal {
  background: var(--signal);
  border-color: var(--signal);
  color: #06231B;
  font-weight: 700;
}
.btn--signal:hover { background: var(--mist); border-color: var(--mist); }
.btn--ghost { color: var(--white); background: var(--signal-06); }
.btn--ghost:hover { color: var(--signal); border-color: var(--signal-35); background: var(--signal-12); }
.btn--amber { color: var(--amber); border-color: var(--amber-40); background: var(--amber-18); }
.btn--amber:hover { color: var(--ink); background: var(--amber); border-color: var(--amber); }
.btn--block { width: 100%; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

/* ---------- 6. 头部（框架式导航） ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  background: var(--ink-veil);
  border-bottom: var(--line);
}
.site-header::after {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--signal), rgba(30, 61, 51, 0) 60%);
}
.site-header__bar {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.4vw, 20px);
  padding-block: 11px;
  flex-wrap: nowrap;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-width: 0;
  flex: 0 1 auto;
}
.brand__mark {
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
  font-family: var(--font-condensed);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1;
  white-space: nowrap;
}
.brand__ki { color: var(--signal); }
.brand__cn { color: var(--white); }
.brand__mark:hover .brand__cn { color: var(--mist); }
.brand__line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.site-nav { margin-left: auto; min-width: 0; }
.site-nav__list { display: flex; align-items: stretch; flex-wrap: nowrap; }
.site-nav__item { display: flex; }
.site-nav__link {
  display: inline-flex;
  align-items: center;
  height: 100%;
  padding: 10px 13px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--muted);
  border-left: var(--line);
  transition: color .18s var(--ease), background-color .18s var(--ease), box-shadow .18s var(--ease);
}
.site-nav__item:last-child .site-nav__link { border-right: var(--line); }
.site-nav__link:hover { color: var(--mist); background-color: var(--signal-06); }
.site-nav__link[aria-current="page"] {
  color: var(--signal);
  background-color: var(--signal-12);
  box-shadow: inset 0 -2px 0 var(--signal);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding-left: clamp(10px, 1.4vw, 18px);
  border-left: var(--line);
}
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: var(--line);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.nav-toggle__bars { display: grid; gap: 3px; width: 16px; }
.nav-toggle__bars i {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform .18s var(--ease), opacity .18s var(--ease);
}
.nav-toggle:hover { color: var(--signal); border-color: var(--signal-35); }
.site-header[data-open="true"] .nav-toggle { color: var(--signal); border-color: var(--signal); }
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }

.header-ticker {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 11px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--muted);
}
.header-ticker__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  background: var(--signal);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--signal-18);
  animation: ki-pulse 2.6s ease-in-out infinite;
}
@keyframes ki-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 120px);
  background: var(--panel);
  border-top: var(--line);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--signal), var(--amber) 45%, rgba(255, 180, 58, 0) 85%);
}
.site-footer__frame { padding-block: 0; }
.site-footer__top {
  display: grid;
  grid-template-columns: 1.5fr .85fr .85fr .75fr 1.35fr;
  gap: 40px clamp(20px, 2.4vw, 32px);
  padding-block: clamp(40px, 5vw, 72px) clamp(28px, 3vw, 44px);
}
.site-footer__brand { display: grid; gap: 12px; align-content: start; }
.site-footer__wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
  font-family: var(--font-condensed);
  font-size: 26px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: .02em;
}
.site-footer__desc { font-size: 13.5px; color: var(--muted); max-width: 40ch; }
.site-footer__range {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--muted);
  padding-top: 10px;
  border-top: var(--line);
}
.footer-nav { display: grid; gap: 14px; align-content: start; }
.footer-nav__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--muted);
  text-transform: uppercase;
}
.footer-nav__title::before { content: ""; width: 2px; height: 12px; background: var(--signal); }
.footer-nav__list { display: grid; gap: 9px; }
.footer-nav__link {
  display: inline-block;
  font-size: 14px;
  color: var(--white);
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease), transform .18s var(--ease);
}
.footer-nav__link:hover { color: var(--signal); border-color: var(--signal-35); transform: translateX(2px); }
.footer-contact { display: grid; gap: 14px; align-content: start; }
.footer-contact__list { display: grid; gap: 10px; }
.footer-contact__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 13.5px;
}
.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
}
.footer-contact__val { color: var(--white); word-break: break-word; }
.footer-contact__note {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
  padding-top: 10px;
  border-top: var(--line);
}
.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 20px 28px;
  border-top: var(--line);
}
.site-footer__fine {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--muted);
}
.site-footer__fine--muted { color: var(--muted); opacity: .8; }

/* ---------- 8. 面包屑 ---------- */
.breadcrumb { margin-top: clamp(20px, 3vw, 32px); }
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--muted);
}
.breadcrumb__item { display: inline-flex; align-items: center; }
.breadcrumb__item + .breadcrumb__item::before { content: "/"; margin: 0 9px; color: var(--grid); }
.breadcrumb__link { color: var(--muted); transition: color .18s var(--ease); }
.breadcrumb__link:hover { color: var(--signal); }
.breadcrumb__item[aria-current="page"] { color: var(--white); }

/* ---------- 9. 正文容器 ---------- */
.prose { max-width: 68ch; font-size: 15.5px; line-height: 1.8; }
.prose > * + * { margin-top: 1.05em; }
.prose h2 { margin-top: 1.9em; font-size: clamp(22px, 2.6vw, 30px); }
.prose h3 { margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose ul { list-style: none; }
.prose ul li { position: relative; padding-left: 14px; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 1px;
  background: var(--signal);
}
.prose ol { list-style: decimal; }
.prose ol li::marker { color: var(--signal); font-family: var(--font-mono); }
.prose a { color: var(--signal); border-bottom: 1px solid var(--signal-35); }
.prose a:hover { border-bottom-color: var(--signal); }
.prose blockquote {
  border-left: 2px solid var(--amber);
  padding: 4px 0 4px 18px;
  color: var(--mist);
}
.prose code {
  font-family: var(--font-mono);
  font-size: .88em;
  padding: 2px 6px;
  background: var(--panel);
  border: var(--line);
  border-radius: var(--radius);
  color: var(--mist);
}
.prose hr { border: 0; height: 1px; background: var(--grid); margin-block: 2em; }

/* ---------- 10. 网格 ---------- */
.grid { display: grid; gap: clamp(16px, 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)); }

/* ---------- 11. 编号章节 ---------- */
.chapter { position: relative; padding-left: clamp(0px, 5vw, 76px); }
.chapter__index {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--grid);
  transition: color .3s var(--ease);
}
.chapter__title { margin-top: 10px; }
.chapter__body { margin-top: 16px; }
.chapter.is-active .chapter__index { color: var(--signal); }
.chapter.is-active .chapter__title { color: var(--white); }

/* ---------- 12. 面板 / 标签 / 读数 ---------- */
.panel {
  position: relative;
  background: var(--panel);
  border: var(--line);
  border-radius: var(--radius);
  padding: clamp(18px, 2.2vw, 26px);
}
.panel::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -1px;
  width: 14px;
  height: 14px;
  border-top: 1px solid var(--grid);
  border-right: 1px solid var(--grid);
  pointer-events: none;
}
.panel--signal { border-color: var(--signal-35); }
.panel--signal::after { border-color: var(--signal); }
.panel--amber { border-color: var(--amber-40); }
.panel--amber::after { border-color: var(--amber); }
.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: var(--line);
}
.panel__title { font-family: var(--font-condensed); font-size: 19px; font-weight: 800; letter-spacing: .01em; }
.panel__meta { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .06em; color: var(--muted); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: var(--line);
  border-radius: var(--radius);
  background: rgba(16, 43, 36, .65);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--muted);
  white-space: nowrap;
}
.tag--signal { color: var(--signal); border-color: var(--signal-35); background: var(--signal-06); }
.tag--amber { color: var(--amber); border-color: var(--amber-40); background: var(--amber-18); }
.tag--coral { color: var(--coral); border-color: rgba(255, 107, 92, .45); }

.stat { display: grid; gap: 5px; }
.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
}
.stat__value--amber { color: var(--amber); }
.stat__label { font-size: 13px; color: var(--muted); }

/* ---------- 13. 时间轴 ---------- */
.timeline { position: relative; padding-left: 26px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--signal), var(--grid) 85%);
}
.timeline__item { position: relative; padding-bottom: 22px; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 11px;
  height: 11px;
  border: 2px solid var(--signal);
  background: var(--ink);
  border-radius: 50%;
}
.timeline__item--offside::before { border-color: var(--amber); }
.timeline__time { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .06em; color: var(--muted); }
.timeline__title { font-size: 15px; color: var(--white); }
.timeline__title span { color: var(--muted); }

/* ---------- 14. 联赛切换轴 / 标签页 / 筛选 ---------- */
.axis {
  display: grid;
  gap: 6px;
  padding: 8px;
  border: var(--line);
  border-radius: var(--radius);
  background: rgba(16, 43, 36, .55);
}
.axis__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .07em;
  color: var(--muted);
  text-align: left;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}
.axis__btn:hover { color: var(--mist); border-color: var(--grid); }
.axis__btn[aria-selected="true"] {
  color: #06231B;
  background: var(--signal);
  border-color: var(--signal);
  font-weight: 700;
}
.axis__btn small { font-size: 11px; opacity: .8; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 7px 12px;
  border: var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}
.chip:hover { color: var(--mist); border-color: var(--signal-35); }
.chip[aria-pressed="true"] {
  color: #06231B;
  background: var(--signal);
  border-color: var(--signal);
  font-weight: 700;
}

/* ---------- 15. 导出抽屉 ---------- */
.drawer { position: fixed; inset: 0; z-index: 85; pointer-events: none; visibility: hidden; }
.drawer__scrim {
  position: absolute;
  inset: 0;
  background: rgba(4, 12, 10, .62);
  opacity: 0;
  transition: opacity .22s var(--ease);
}
.drawer__panel {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: min(430px, 92vw);
  padding: clamp(20px, 3vw, 30px);
  overflow-y: auto;
  background: var(--panel);
  border-left: 1px solid var(--amber-40);
  transform: translateX(100%);
  transition: transform .22s var(--ease);
}
.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: var(--line);
}
.drawer__body { display: grid; gap: 18px; }
.drawer__close {
  padding: 6px 10px;
  border: var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
}
.drawer__close:hover { color: var(--signal); border-color: var(--signal-35); }
.drawer[data-open="true"] { pointer-events: auto; visibility: visible; }
.drawer[data-open="true"] .drawer__scrim { opacity: 1; }
.drawer[data-open="true"] .drawer__panel { transform: translateX(0); }

/* ---------- 16. 图片容器（页面阶段放置图片） ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(160deg, var(--signal-06), rgba(11, 31, 26, 0) 62%),
    var(--panel);
}
.media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(180deg, var(--grid) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: .5;
  pointer-events: none;
}
.media img {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media--tactical::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(135deg, rgba(255, 180, 58, .10) 0 1px, transparent 1px 16px);
  pointer-events: none;
}
.media__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--muted);
  text-align: center;
  padding: 16px;
}
.media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--muted);
}

/* ---------- 17. 显现动效 ---------- */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.js-ready [data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1200px) {
  .brand__line { display: none; }
}
@media (max-width: 1080px) {
  .site-footer__top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; }
  .site-header__bar { flex-wrap: wrap; row-gap: 10px; padding-block: 12px; }
  .brand { order: 1; }
  .header-actions { order: 2; margin-left: auto; padding-left: 0; border-left: 0; }
  .nav-toggle { order: 3; }
  .site-nav {
    order: 4;
    flex: 1 0 100%;
    display: none;
    margin-left: 0;
    border-left: 0;
  }
  .site-header[data-open="true"] .site-nav { display: block; }
  .site-nav__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-nav__item { display: block; }
  .site-nav__link {
    width: 100%;
    padding: 14px 6px;
    border-left: 0;
    border-top: var(--line);
    font-size: 13px;
  }
  .site-nav__item:nth-child(odd) .site-nav__link { border-right: var(--line); }
  .site-nav__item:last-child .site-nav__link { border-right: 0; }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 700px) {
  .header-actions { display: none; flex: 1 0 100%; margin-left: 0; padding-top: 12px; gap: 10px; }
  .header-actions .btn { flex: 1 1 140px; }
  .site-header[data-open="true"] .header-actions { display: flex; }
  .site-nav__list { grid-template-columns: minmax(0, 1fr); }
  .site-nav__item:nth-child(odd) .site-nav__link { border-right: 0; }
}
@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
  .site-footer__top { grid-template-columns: minmax(0, 1fr); }
  .footer-contact__item { grid-template-columns: 38px minmax(0, 1fr); }
  .chapter { padding-left: 0; }
  .header-ticker { font-size: 11px; line-height: 1.6; }
}

/* ---------- 19. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .js-ready [data-reveal] { opacity: 1 !important; transform: none !important; }
  .read-progress__fill { transition: none; }
  .drawer__panel, .drawer__scrim { transition: none; }
}