/* =========================================================
   爱游戏体育看台 · 共享样式表 /assets/site.css
   看台夜灯 + 记分牌冷光：深墨绿打底，青柠与暖橙只做信号
   ========================================================= */

/* ---------- 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, p, figure, blockquote, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
:where(section, article, div, li)[id] { scroll-margin-top: 108px; }

/* ---------- 2. Tokens ---------- */
:root {
  color-scheme: dark;

  --c-stand: #0E2B24;
  --c-night: #14181A;
  --c-lime: #C8F24E;
  --c-orange: #FF8A3D;
  --c-cream: #F1EBE0;
  --c-mid: #1B4A3B;
  --c-fog: #8A9A93;
  --c-well: #08110F;
  --c-lime-mist: #E6F6C4;
  --c-orange-deep: #B25416;

  --bg: var(--c-stand);
  --fg: var(--c-cream);
  --fg-dim: var(--c-fog);
  --signal: var(--c-lime);
  --signal-2: var(--c-orange);

  --hair: rgba(241, 235, 224, .14);
  --hair-2: rgba(241, 235, 224, .30);
  --veil: rgba(241, 235, 224, .045);
  --veil-hover: rgba(241, 235, 224, .08);

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

  --r-organic-a: 26px 8px 22px 10px;
  --r-organic-b: 10px 24px 8px 26px;
  --r-organic-c: 18px 18px 6px 22px;
  --r-soft: 12px;

  --pad-rail: clamp(16px, 4vw, 56px);
  --gap: clamp(16px, 2.4vw, 28px);
  --wrap: 1240px;
  --shadow-panel: 0 18px 40px -28px rgba(8, 17, 15, .9);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--bg);
  background-image:
    repeating-linear-gradient(0deg, rgba(241, 235, 224, .028) 0 1px, transparent 1px 64px),
    radial-gradient(1200px 600px at 88% -12%, rgba(200, 242, 78, .07), transparent 62%);
  background-attachment: fixed;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.02em;
}
h1 { font-size: clamp(30px, 5.2vw, 54px); }
h2 { font-size: clamp(24px, 3.4vw, 36px); }
h3 { font-size: clamp(19px, 2.4vw, 25px); }
h4 { font-size: 17px; }
p { text-wrap: pretty; }
strong { font-weight: 700; }
::selection { background: var(--c-lime); color: var(--c-well); }

:focus-visible {
  outline: 2px solid var(--c-lime);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ---------- 4. 工具类 ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding-inline: var(--pad-rail); }
.wrap--narrow { max-width: 880px; }

.section { padding-block: clamp(40px, 6vw, 88px); }
.section--tight { padding-block: clamp(26px, 4vw, 52px); }

.mono {
  font-family: var(--font-mono);
  font-size: .82em;
  letter-spacing: .06em;
  font-feature-settings: "tnum" 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--fg-dim);
}
.eyebrow--lime { color: var(--c-lime); }
.eyebrow--orange { color: var(--c-orange); }

.section-title { display: block; }
.section-title__rule { display: block; width: 48px; height: 2px; background: var(--c-orange); margin-top: 12px; }

.hair { height: 1px; border: 0; background: var(--hair); margin-block: clamp(22px, 3.6vw, 44px); }

.link-lime { color: var(--c-lime); border-bottom: 1px solid rgba(200, 242, 78, .42); }
.link-lime:hover { border-bottom-color: var(--c-lime); background: rgba(200, 242, 78, .1); }

.anchor { scroll-margin-top: 108px; }

.surface-cream { background: var(--c-cream); color: var(--c-well); }
.surface-cream .section-title__rule { background: var(--c-orange-deep); }
.surface-cream .eyebrow { color: rgba(8, 17, 15, .58); }
.surface-mid { background: linear-gradient(150deg, var(--c-mid) 0%, rgba(8, 17, 15, .92) 100%); }
.surface-night { background: var(--c-night); }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  letter-spacing: .01em;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn--sm { padding: 9px 14px; font-size: 13px; }
.btn--lime { background: var(--c-lime); color: var(--c-well); }
.btn--lime:hover { background: var(--c-lime-mist); }
.btn--orange { background: var(--c-orange); color: var(--c-well); }
.btn--orange:hover { background: var(--c-orange-deep); color: var(--c-cream); }
.btn--ghost { border-color: var(--hair-2); color: var(--fg); }
.btn--ghost:hover { border-color: var(--c-lime); color: var(--c-lime); }
.btn:active { transform: translateY(1px); }

/* ---------- 6. 头部 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  transform: translateY(-180%);
  background: var(--c-lime);
  color: var(--c-well);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  padding: 10px 14px;
  border-radius: 8px;
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  color: var(--fg);
  background: linear-gradient(180deg, rgba(8, 17, 15, .96) 0%, rgba(14, 43, 36, .92) 100%);
  border-bottom: 1px solid var(--hair);
}

.header-meter {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--hair);
}
.header-meter__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--c-lime), var(--c-orange));
  transition: width .12s linear;
}

.header-rail {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(12px, 2vw, 34px);
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px var(--pad-rail);
  transition: padding .2s ease;
}

.brand { min-width: 0; }
.brand__link { display: flex; align-items: center; gap: 10px; }
.brand__mark {
  flex: none;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  padding: 6px 8px;
  color: var(--c-lime);
  border: 1px solid rgba(200, 242, 78, .42);
  border-radius: 2px 10px 2px 10px;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: .01em;
  white-space: nowrap;
}
.brand__meta {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .08em;
  color: var(--fg-dim);
  white-space: nowrap;
}

.site-nav { justify-self: end; min-width: 0; }
.site-nav__list { display: flex; align-items: center; gap: clamp(8px, 1.5vw, 22px); }
.site-nav__item { flex: none; }
.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 6px 2px;
  font-size: 14px;
  color: rgba(241, 235, 224, .74);
  white-space: nowrap;
  transition: color .18s ease;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  bottom: 0;
  height: 2px;
  background: transparent;
  transition: background-color .18s ease;
}
.site-nav__link:hover { color: var(--c-cream); }
.site-nav__link[aria-current="page"] { color: var(--c-lime); }
.site-nav__link[aria-current="page"]::after { background: var(--c-lime); }

.header-tools { display: flex; align-items: center; gap: 10px; }
.tool-btn {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  padding: 7px 11px;
  color: var(--fg);
  border: 1px solid var(--hair-2);
  border-radius: 999px;
  transition: color .18s ease, border-color .18s ease;
}
.tool-btn:hover { color: var(--c-lime); border-color: var(--c-lime); }
.tool-link { font-size: 12px; color: var(--fg-dim); white-space: nowrap; }
.tool-link:hover { color: var(--c-orange); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 11px;
  color: var(--fg);
  border: 1px solid var(--hair-2);
  border-radius: 999px;
}
.nav-toggle:hover { border-color: var(--c-lime); color: var(--c-lime); }
.nav-toggle__bars { display: grid; gap: 4px; width: 16px; }
.nav-toggle__bars span { display: block; height: 1.5px; background: currentColor; transition: transform .2s ease, opacity .2s ease; }
.nav-toggle__text { font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

.site-header[data-compact] .header-rail { padding-block: 8px; }
.site-header[data-compact] .brand__meta { display: none; }

/* ---------- 7. 检索托盘 ---------- */
.search-tray { background: var(--c-night); border-top: 1px solid var(--hair); }
.search-tray[hidden] { display: none; }
.search-tray__inner {
  display: grid;
  gap: 10px;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px var(--pad-rail) 22px;
}
.search-tray__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--c-orange);
}
.search-tray__input {
  width: 100%;
  padding: 12px 14px;
  color: var(--fg);
  background: rgba(241, 235, 224, .06);
  border: 1px solid var(--hair-2);
  border-radius: 10px;
}
.search-tray__input::placeholder { color: rgba(138, 154, 147, .9); }
.search-tray__note { font-size: 12.5px; color: var(--fg-dim); }
.search-tray__list { display: grid; gap: 6px; max-height: 44vh; overflow-y: auto; }
.search-tray__list li { margin: 0; }
.search-tray__list li[hidden] { display: none; }
.search-tray__list a,
.search-tray__hit {
  display: block;
  padding: 9px 12px;
  font-size: 14px;
  border-left: 2px solid var(--c-lime);
  background: var(--veil);
}
.search-tray__list a:hover { background: rgba(230, 246, 196, .14); }
.search-tray__hit { border-left-color: var(--c-fog); color: var(--fg-dim); }

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(40px, 6vw, 80px);
  color: var(--fg);
  background: var(--c-night);
  border-top: 1px solid var(--hair);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-lime) 0 10%, var(--c-orange) 10% 15%, transparent 15%);
}

.footer-rail {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 1.7fr);
  gap: clamp(24px, 4vw, 64px);
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(32px, 5vw, 60px) var(--pad-rail) 30px;
  border-bottom: 1px solid var(--hair);
}
.footer-brand__link { display: inline-flex; align-items: baseline; gap: 10px; }
.footer-brand__mark {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  padding: 5px 7px;
  color: var(--c-lime);
  border: 1px solid rgba(200, 242, 78, .42);
  border-radius: 2px 10px 2px 10px;
}
.footer-brand__name { font-family: var(--font-display); font-weight: 800; font-size: 19px; letter-spacing: -.01em; }
.footer-brand__note { margin-top: 12px; max-width: 34ch; font-size: 13.5px; color: var(--fg-dim); }
.footer-brand__mono { margin-top: 10px; font-size: 11.5px; letter-spacing: .06em; color: var(--c-orange); }

.footer-cols { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(14px, 2.4vw, 28px); }
.footer-col__title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--c-fog);
  margin-bottom: 12px;
}
.footer-col__list { display: grid; gap: 9px; }
.footer-col__list a {
  font-size: 14px;
  color: rgba(241, 235, 224, .8);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color .18s ease, border-color .18s ease;
}
.footer-col__list a:hover { color: var(--c-lime); border-bottom-color: var(--c-lime); }

.footer-contact {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 20px var(--pad-rail);
  border-bottom: 1px solid var(--hair);
}
.footer-contact__line { font-size: 12.5px; line-height: 2; color: var(--fg-dim); }
.footer-contact__key {
  display: inline-block;
  margin-right: 6px;
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--c-fog);
  border-bottom: 1px solid var(--hair-2);
}

.footer-strip {
  display: grid;
  gap: 10px;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px var(--pad-rail) 28px;
}
.footer-log { font-size: 13px; color: rgba(241, 235, 224, .72); }
.footer-log .signal-dot { margin-right: 8px; }
.footer-legal { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .04em; color: var(--c-fog); }
.footer-top {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  padding: 8px 13px;
  color: var(--fg-dim);
  border: 1px solid var(--hair);
  border-radius: 999px;
  transition: color .18s ease, border-color .18s ease;
}
.footer-top:hover { color: var(--c-lime); border-color: var(--c-lime); }

/* ---------- 9. 面包屑 ---------- */
.breadcrumb { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 16px var(--pad-rail) 0; }
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--fg-dim);
}
.breadcrumb__list li { display: flex; align-items: center; gap: 8px; }
.breadcrumb__list li + li::before { content: "/"; color: var(--hair-2); }
.breadcrumb__list a:hover { color: var(--c-lime); }
.breadcrumb__list [aria-current="page"] { color: var(--c-cream); }

/* ---------- 10. 栅格 ---------- */
.grid { display: grid; gap: var(--gap); grid-template-columns: repeat(12, minmax(0, 1fr)); }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-12 { grid-column: span 12; }
.col-start-2 { grid-column-start: 2; }
.col-start-6 { grid-column-start: 6; }

.split { display: grid; gap: var(--gap); }
.split--5-7 { grid-template-columns: 5fr 7fr; }
.split--7-5 { grid-template-columns: 7fr 5fr; }
.split--4-8 { grid-template-columns: 4fr 8fr; }
.split--8-4 { grid-template-columns: 8fr 4fr; }
.split--3-6-3 { grid-template-columns: 3fr 6fr 3fr; }

/* ---------- 11. 面板与基础组件 ---------- */
.panel {
  position: relative;
  padding: clamp(20px, 3vw, 36px);
  background: var(--veil);
  border: 1px solid var(--hair);
  border-radius: var(--r-organic-a);
  box-shadow: var(--shadow-panel);
}
.panel--ink { background: var(--c-night); border-color: rgba(241, 235, 224, .1); }
.panel--mid { background: linear-gradient(158deg, var(--c-mid) 0%, rgba(8, 17, 15, .92) 100%); border-color: transparent; }
.panel--cream { background: var(--c-cream); color: var(--c-well); border-color: transparent; }
.panel--cream .section-title__rule { background: var(--c-orange-deep); }
.panel--stack-a { margin-left: clamp(0px, 3vw, 42px); }
.panel--stack-b { margin-right: clamp(0px, 5vw, 72px); border-radius: var(--r-organic-b); }

.prose { max-width: 44em; font-size: 16.5px; line-height: 1.9; }
.prose > * + * { margin-top: 1.1em; }
.prose h2, .prose h3, .prose h4 { margin-top: 1.7em; }
.prose ul, .prose ol { display: grid; gap: 8px; }
.prose ul li { position: relative; padding-left: 20px; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: 9px;
  height: 2px;
  background: var(--c-lime);
}
.prose--cream {
  padding: clamp(20px, 3vw, 36px);
  background: var(--c-cream);
  color: var(--c-well);
  border-radius: var(--r-organic-b);
  font-family: var(--font-serif);
}
.prose--cream a { color: var(--c-orange-deep); border-bottom: 1px solid rgba(178, 84, 22, .45); }
.prose--cream ul li::before { background: var(--c-orange-deep); }

.lead { font-size: clamp(17px, 1.9vw, 21px); line-height: 1.75; font-weight: 500; }
.quote {
  padding-left: 18px;
  border-left: 2px solid var(--c-lime);
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 500;
  line-height: 1.6;
}

/* 图片容器（供页面阶段放俯拍/斜切图） */
.media-frame {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid var(--hair);
  border-radius: var(--r-organic-a);
  background: linear-gradient(145deg, var(--c-mid) 0%, var(--c-well) 100%);
}
.media-frame__img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16 / 10; }
.media-frame--wide .media-frame__img { aspect-ratio: 21 / 9; }
.media-frame--tall .media-frame__img { aspect-ratio: 4 / 5; }
.media-frame--square .media-frame__img { aspect-ratio: 1 / 1; }
.media-frame--tilt { transform: rotate(-1.4deg); border-radius: var(--r-organic-b); }
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, transparent 0 39px, rgba(241, 235, 224, .07) 39px 40px);
}
.media-frame__caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--fg-dim);
}

/* 数据块 */
.stat {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--c-night);
  border: 1px solid var(--hair);
  border-radius: 8px 18px 8px 18px;
}
.stat__value { font-family: var(--font-mono); font-size: clamp(20px, 3vw, 30px); color: var(--c-lime); letter-spacing: .02em; }
.stat__label { font-size: 12.5px; color: var(--fg-dim); }
.panel--cream .stat { background: rgba(8, 17, 15, .05); border-color: rgba(8, 17, 15, .12); }
.panel--cream .stat__value { color: var(--c-orange-deep); }

/* 索引条目 */
.index-row {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 10px;
  border-bottom: 1px solid var(--hair);
  transition: background-color .18s ease, letter-spacing .18s ease;
}
.index-row:hover { background: var(--veil-hover); letter-spacing: .05em; }
.index-row__key { flex: none; min-width: 64px; font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .08em; color: var(--c-lime); }
.index-row__name { font-family: var(--font-display); font-weight: 700; font-size: 15.5px; }
.index-row__desc { margin-left: auto; text-align: right; font-size: 13.5px; color: var(--fg-dim); }

/* 时间轴 */
.timeline { position: relative; display: grid; gap: 20px; padding-left: 26px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px; width: 1px; background: var(--hair-2); }
.timeline__item { position: relative; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-well);
  border: 1px solid var(--hair-2);
  transition: background-color .2s ease, border-color .2s ease;
}
.timeline__item[data-active]::before { background: var(--c-lime); border-color: var(--c-lime); }
.timeline__time { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .06em; color: var(--c-orange); }
.timeline__title { margin-top: 4px; font-family: var(--font-display); font-size: 16px; font-weight: 700; }
.timeline__text { font-size: 14px; color: var(--fg-dim); }
.timeline--offset .timeline__item:nth-child(even) { margin-left: clamp(10px, 4vw, 56px); }

/* 表格 */
.data-table { width: 100%; font-size: 14px; }
.data-table th {
  padding: 10px 12px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--c-fog);
  border-bottom: 1px solid var(--hair-2);
}
.data-table td { padding: 12px; border-bottom: 1px solid var(--hair); vertical-align: top; }
.data-table tbody tr:hover { background: var(--veil); }
.data-table__num { font-family: var(--font-mono); color: var(--c-lime); letter-spacing: .04em; }

/* 标签与状态点 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--fg-dim);
  border: 1px solid var(--hair-2);
  border-radius: 999px;
}
.tag--lime { color: var(--c-lime); border-color: rgba(200, 242, 78, .45); }
.tag--orange { color: var(--c-orange); border-color: rgba(255, 138, 61, .45); }

.signal-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--c-orange); vertical-align: middle; }
@media (prefers-reduced-motion: no-preference) {
  .signal-dot--pulse { animation: signal-pulse 1.1s ease-out 1; }
}
@keyframes signal-pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 138, 61, .6); }
  100% { box-shadow: 0 0 0 10px rgba(255, 138, 61, 0); }
}

/* 主题筛选 */
.filter-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.filter-btn {
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(241, 235, 224, .78);
  border: 1px solid var(--hair-2);
  border-radius: 999px;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}
.filter-btn:hover { color: var(--c-lime); border-color: var(--c-lime); }
.filter-btn[aria-pressed="true"] { background: var(--c-lime-mist); color: var(--c-well); border-color: var(--c-lime-mist); }
.filter-status { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .05em; color: var(--fg-dim); }
[data-filter-item][hidden] { display: none !important; }
.surface-cream .filter-btn { color: rgba(8, 17, 15, .7); border-color: rgba(8, 17, 15, .22); }
.surface-cream .filter-btn:hover { color: var(--c-orange-deep); border-color: var(--c-orange-deep); }
.surface-cream .filter-btn[aria-pressed="true"] { background: var(--c-well); color: var(--c-lime-mist); border-color: var(--c-well); }

/* 摘要卡与折叠 */
.summary-card {
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--veil);
  border: 1px solid var(--hair);
  border-radius: var(--r-organic-b);
  transition: border-color .2s ease, background-color .2s ease;
}
.summary-card[data-open] { border-color: rgba(200, 242, 78, .4); background: rgba(241, 235, 224, .06); }
.summary-card__head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 10px; }
.summary-card__title { font-family: var(--font-display); font-size: 18px; font-weight: 700; }
.summary-card__meta { font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; color: var(--c-orange); }
.summary-card__text { margin-top: 10px; font-size: 14.5px; color: rgba(241, 235, 224, .82); }
.summary-card__body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .28s ease; }
.summary-card__inner { overflow: hidden; }
.summary-card__inner > * + * { margin-top: 12px; }
.summary-card[data-open] .summary-card__body { grid-template-rows: 1fr; }
.summary-card[data-open] .summary-card__inner { padding-top: 14px; }

.fold-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  padding: 2px 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--c-lime);
  border-bottom: 1px solid rgba(200, 242, 78, .42);
}
.fold-btn::after { content: "+"; font-size: 13px; }
.fold-btn[aria-expanded="true"]::after { content: "–"; }
.fold-btn:hover { border-bottom-color: var(--c-lime); }

/* ---------- 12. 动效 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .24s ease, transform .24s ease;
}
html.js [data-reveal][data-shown] { opacity: 1; transform: none; }

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1080px) {
  .site-nav__link { font-size: 13px; }
  .split--3-6-3 { grid-template-columns: 1fr; }
}

@media (max-width: 1000px) {
  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 70;
    width: min(320px, 86vw);
    padding: 92px 24px 28px;
    overflow-y: auto;
    justify-self: auto;
    background: var(--c-night);
    border-left: 1px solid var(--hair);
    transform: translateX(102%);
    transition: transform .26s ease;
  }
  .site-nav[data-open] { transform: translateX(0); }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__item { flex: 1 1 auto; }
  .site-nav__link { display: block; padding: 14px 14px 14px 18px; font-size: 17px; border-bottom: 1px solid var(--hair); }
  .site-nav__link::after {
    left: 0;
    right: auto;
    top: 50%;
    bottom: auto;
    width: 3px;
    height: 0;
    transform: translateY(-50%);
    transition: height .18s ease, background-color .18s ease;
  }
  .site-nav__link[aria-current="page"]::after { height: 22px; background: var(--c-lime); }
  .nav-toggle { display: inline-flex; }
  .tool-link { display: none; }
  .header-rail { grid-template-columns: auto 1fr auto; }
  .site-nav { grid-column: 3; }
}

@media (max-width: 900px) {
  .split--5-7, .split--7-5, .split--4-8, .split--8-4 { grid-template-columns: 1fr; }
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9 { grid-column: span 12; }
  .col-start-2, .col-start-6 { grid-column-start: auto; }
  .footer-rail { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .panel--stack-a { margin-left: 0; }
  .panel--stack-b { margin-right: 0; }
  .media-frame--tilt { transform: none; }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .tool-btn { display: none; }
  .search-tray__inner { padding-inline: var(--pad-rail); }
  .index-row { flex-wrap: wrap; }
  .index-row__desc { margin-left: 78px; text-align: left; }
  .timeline--offset .timeline__item:nth-child(even) { margin-left: 0; }
}

@media (max-width: 560px) {
  .brand__mark { display: none; }
  .brand__name { font-size: 14px; }
  .btn--sm { padding: 8px 11px; font-size: 12.5px; }
  .footer-cols { grid-template-columns: 1fr; }
  .footer-contact__line { font-size: 12px; }
}

/* ---------- 14. 可达性与降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  html.js [data-reveal] { opacity: 1 !important; transform: none !important; }
  .signal-dot--pulse { animation: none !important; }
}