/* ============================================================
   谈球吧体育主站 · 共享样式表 /assets/site.css
   夜间球场数据实验室：炭黑夜底 + 深墨绿分区
   主场/补时 = 荧光黄绿  客场 = 暖橙  历史层 = 冷蓝灰
   ============================================================ */

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { 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; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
summary { list-style: none; }

/* ---------- 变量 ---------- */
:root {
  --ink: #0B0F0D;
  --pitch: #10231A;
  --turf: #163223;
  --paper: #E9EFE4;
  --home: #C8FF3D;
  --away: #FF8A3D;
  --data: #7FA8BF;
  --line: #24332B;
  --muted: #9AA8A0;
  --hover: #1E3A2B;
  --body-text: #CFD9D1;

  --rail-w: 88px;
  --hdr-h: 64px;

  --font-cond: "Oswald", "Barlow Condensed", "Arial Narrow", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --slab-shadow: 6px 6px 0 -1px rgba(36, 51, 43, .6);
}

/* ---------- 基础排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: clamp(15.5px, .5vw + 13.5px, 17.5px);
  font-weight: 400;
  line-height: 1.75;
  color: var(--body-text);
  background-color: var(--ink);
  background-image:
    repeating-linear-gradient(0deg, rgba(127, 168, 191, .045) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(90deg, rgba(127, 168, 191, .045) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(90deg, rgba(200, 255, 61, .022) 0 2px, transparent 2px 128px),
    radial-gradient(120% 80% at 16% -12%, rgba(22, 50, 35, .85) 0%, transparent 62%),
    radial-gradient(90% 70% at 102% 0%, rgba(16, 35, 26, .72) 0%, transparent 58%);
  background-attachment: fixed;
  padding-top: var(--hdr-h);
  min-height: 100vh;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-cond);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.01em;
  color: var(--paper);
}
h1 { font-size: clamp(34px, 5vw, 68px); }
h2 { font-size: clamp(25px, 3vw, 42px); }
h3 { font-size: clamp(18px, 1.5vw, 23px); }
h4 { font-size: clamp(15px, 1.1vw, 17px); letter-spacing: .02em; }

p { text-wrap: pretty; }

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

/* ---------- 布局工具 ---------- */
.wrap {
  width: min(1500px, 100% - clamp(28px, 5vw, 96px));
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: clamp(48px, 6.5vw, 110px);
}
.section--tight { padding-block: clamp(30px, 4vw, 64px); }

.block--pitch {
  background-image: linear-gradient(180deg, rgba(16, 35, 26, .92), rgba(11, 15, 13, .1));
  border-block: 1px solid var(--line);
}
.block--paper {
  background: var(--paper);
  color: #2C4A38;
}
.block--paper h1,
.block--paper h2,
.block--paper h3,
.block--paper h4 { color: #0F2A1C; }
.block--paper p,
.block--paper .lead { color: #2C4A38; }
.block--paper .muted { color: #5B7A66; }
.block--paper .rule { background: linear-gradient(90deg, #C3D2C5, transparent); }
.block--paper .tag {
  color: #3F5F4C;
  border-color: #C2D2C3;
  background: rgba(255, 255, 255, .55);
}
.block--paper .slab {
  background: #F4F8F0;
  border-color: #C9D8CB;
  box-shadow: 6px 6px 0 -1px rgba(127, 168, 191, .35);
}

.grid { display: grid; gap: clamp(16px, 2vw, 30px); }
.grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.grid--split-rev { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.grid--thirds { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--index { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

.stack > * + * { margin-top: var(--stack-gap, 1.1em); }

/* ---------- 文本组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 1px;
  background: var(--home);
}

.lead {
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 1.7;
  color: #DDE6DE;
}

.prose { max-width: 72ch; }
.prose p + p { margin-top: 1.05em; }
.prose h3 { margin-top: 1.7em; margin-bottom: .55em; }
.prose strong { color: var(--home); font-weight: 700; }

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}

.muted {
  color: var(--muted);
  font-size: 13.5px;
  letter-spacing: .02em;
}

.rule {
  height: 1px;
  border: 0;
  margin-block: clamp(20px, 3vw, 40px);
  background: linear-gradient(90deg, var(--line), transparent);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(22, 50, 35, .55);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.4;
}
.tag--home { color: var(--home); border-color: rgba(200, 255, 61, .45); background: rgba(200, 255, 61, .08); }
.tag--away { color: var(--away); border-color: rgba(255, 138, 61, .45); background: rgba(255, 138, 61, .08); }
.tag--data { color: var(--data); border-color: rgba(127, 168, 191, .45); background: rgba(127, 168, 191, .08); }

/* ---------- 纸张叠层卡片 ---------- */
.slab {
  position: relative;
  padding: clamp(18px, 2vw, 28px);
  border: 1px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(22, 50, 35, .74), rgba(16, 35, 26, .52));
  box-shadow: var(--slab-shadow);
}
.slab--paper {
  background: var(--paper);
  color: #24402F;
  box-shadow: 6px 6px 0 -1px rgba(127, 168, 191, .4);
}
.slab--paper h3,
.slab--paper h4 { color: #0F2A1C; }

/* ---------- 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: 2px;
  background-image:
    repeating-linear-gradient(90deg, rgba(127, 168, 191, .10) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(0deg, rgba(127, 168, 191, .10) 0 1px, transparent 1px 40px),
    linear-gradient(160deg, #163223, #0B0F0D);
}
.media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.5) contrast(1.06) brightness(.86);
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(11, 15, 13, 0) 52%, rgba(11, 15, 13, .58) 100%);
}
.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 6 / 7; }
.media--square { aspect-ratio: 1 / 1; }
.media--band { aspect-ratio: 16 / 5; }
.media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  max-width: 100%;
  margin: 0;
  padding: 8px 12px;
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  background: rgba(11, 15, 13, .78);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .06em;
}

/* ---------- 数据条 ---------- */
.databar {
  --fill: 0%;
  position: relative;
  height: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(127, 168, 191, .14);
}
.databar__fill {
  display: block;
  height: 100%;
  width: var(--fill);
  background: linear-gradient(90deg, rgba(200, 255, 61, .35), var(--home));
  transition: width .18s var(--ease);
}
.databar--away .databar__fill { background: linear-gradient(90deg, rgba(255, 138, 61, .35), var(--away)); }
.databar--data .databar__fill { background: linear-gradient(90deg, rgba(127, 168, 191, .35), var(--data)); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: 11px 18px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  color: var(--paper);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  line-height: 1.2;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}
.btn:hover { background: var(--hover); border-color: #35513F; color: var(--paper); }
.btn--solid {
  background: var(--home);
  border-color: var(--home);
  color: #0B0F0D;
  font-weight: 700;
}
.btn--solid:hover { background: #DCFF7A; border-color: #DCFF7A; color: #0B0F0D; }
.btn--line { border-color: rgba(200, 255, 61, .6); color: var(--home); }
.btn--line:hover { background: rgba(200, 255, 61, .1); border-color: var(--home); color: var(--home); }
.btn--away { border-color: rgba(255, 138, 61, .6); color: var(--away); }
.btn--away:hover { background: rgba(255, 138, 61, .12); border-color: var(--away); color: var(--away); }

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}
.breadcrumb li { display: inline-flex; align-items: center; gap: .6em; }
.breadcrumb li::after { content: "/"; color: #3A4A41; }
.breadcrumb li:last-child::after { content: ""; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--home); }

/* ---------- 折叠卡 ---------- */
.disclosure {
  border: 1px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(22, 50, 35, .55), rgba(16, 35, 26, .38));
}
.disclosure + .disclosure { margin-top: 10px; }
.disclosure > summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  font-family: var(--font-cond);
  font-size: clamp(16px, 1.3vw, 19px);
  font-weight: 700;
  color: var(--paper);
}
.disclosure > summary::-webkit-details-marker { display: none; }
.disclosure > summary::before {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--home);
}
.disclosure[open] > summary::before { content: "－"; }
.disclosure[open] > summary { border-bottom: 1px solid var(--line); }
.disclosure__body {
  padding: 16px 18px 18px;
  color: #C6D2CA;
  font-size: 15.5px;
}
.disclosure__body p + p { margin-top: .9em; }

/* ============================================================
   页头
   ============================================================ */
.site-header { position: relative; z-index: 80; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: 2px;
  background: var(--home);
  color: #0B0F0D;
  font-weight: 700;
  transform: translateY(-180%);
  transition: transform .16s var(--ease);
}
.skip-link:focus { transform: none; }

/* 顶条 */
.hdr-top {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  height: var(--hdr-h);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  padding-inline: clamp(14px, 2.2vw, 26px);
  background: rgba(11, 15, 13, .9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.hdr-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--paper);
}
.hdr-brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--home);
  color: #0B0F0D;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 800;
  line-height: 1;
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
}
.hdr-brand__text { display: block; }
.hdr-brand__name {
  display: block;
  font-family: var(--font-cond);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1.1;
}
.hdr-brand__line {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .08em;
}

.hdr-wire {
  display: none;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
}
.hdr-wire strong { color: var(--home); font-weight: 500; }

.hdr-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.hdr-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  overflow: hidden;
  background: rgba(127, 168, 191, .16);
}
.hdr-progress > span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--data), var(--home));
  transition: width .1s linear;
}

/* 导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  color: var(--paper);
  font-size: 13px;
  letter-spacing: .08em;
  cursor: pointer;
}
.nav-toggle:hover { background: var(--hover); }
.nav-toggle__bars { position: relative; width: 18px; height: 12px; }
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--home);
  transition: transform .2s var(--ease);
}
.nav-toggle__bars::before { top: 2px; }
.nav-toggle__bars::after { bottom: 2px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(3.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-3.5px) rotate(-45deg); }

/* 侧边索引轨道（桌面） */
.site-rail {
  position: fixed;
  left: 0;
  top: var(--hdr-h);
  z-index: 50;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  width: var(--rail-w);
  height: calc(100vh - var(--hdr-h));
  padding: 22px 0 18px;
  overflow-y: auto;
  background: linear-gradient(180deg, var(--pitch), #0C1B13 88%);
  border-right: 1px solid var(--line);
}

.rail-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
}
.rail-nav__link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: 100%;
  padding: 10px 0;
  color: #B9C6BE;
  font-size: 13px;
  transition: color .18s var(--ease), background-color .18s var(--ease);
}
.rail-nav__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  background: var(--home);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .2s var(--ease);
}
.rail-nav__link:hover { background: rgba(200, 255, 61, .06); color: var(--paper); }
.rail-nav__link[aria-current="page"] { color: var(--home); background: rgba(200, 255, 61, .05); }
.rail-nav__link[aria-current="page"]::before { transform: scaleY(1); }
.rail-nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .06em;
  color: var(--muted);
}
.rail-nav__link[aria-current="page"] .rail-nav__idx { color: var(--home); }
.rail-nav__label {
  writing-mode: vertical-rl;
  letter-spacing: .2em;
  line-height: 1;
}

.rail-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid rgba(36, 51, 43, .8);
}
.rail-side__cap {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--muted);
}

.side-pill {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  color: #B9C6BE;
  font-family: var(--font-cond);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease);
}
.side-pill:hover { border-color: #3C5545; color: var(--paper); }
.side-pill--home[aria-pressed="true"] { background: var(--home); border-color: var(--home); color: #0B0F0D; }
.side-pill--away[aria-pressed="true"] { background: var(--away); border-color: var(--away); color: #1A0D04; }

/* 移动底部切换条（桌面隐藏） */
.side-bar { display: none; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(40px, 6vw, 90px);
  padding-top: clamp(40px, 5vw, 76px);
  background: linear-gradient(180deg, var(--pitch), #0A1710);
  border-top: 1px solid var(--line);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(200, 255, 61, .035) 0 2px, transparent 2px 140px),
    repeating-linear-gradient(0deg, rgba(127, 168, 191, .04) 0 1px, transparent 1px 72px);
}
.site-footer > * { position: relative; z-index: 1; }

.ftr-top {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(24px, 4vw, 64px);
}

.ftr-brand__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
}
.ftr-brand__mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  background: var(--home);
  color: #0B0F0D;
  font-weight: 800;
  font-size: 15px;
  line-height: 1;
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
}
.ftr-brand__name {
  font-family: var(--font-cond);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .02em;
}
.ftr-brand__desc {
  margin: 16px 0 20px;
  max-width: 34em;
  color: #A9B8AF;
  font-size: 14.5px;
  line-height: 1.8;
}

.ftr-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 40px);
}
.ftr-group__title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(36, 51, 43, .9);
  color: var(--home);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
}
.ftr-list li + li { margin-top: 2px; }
.ftr-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  color: #C6D2CA;
  font-size: 14.5px;
  transition: color .18s var(--ease);
}
.ftr-list a::before {
  content: "";
  width: 6px;
  height: 1px;
  background: var(--muted);
  transition: width .18s var(--ease), background-color .18s var(--ease);
}
.ftr-list a:hover { color: var(--paper); }
.ftr-list a:hover::before { width: 14px; background: var(--home); }

.ftr-bottom {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(18px, 2.5vw, 40px);
  margin-top: clamp(28px, 4vw, 54px);
  padding-block: 22px 32px;
  border-top: 1px solid var(--line);
}
.ftr-contact { display: grid; gap: 8px; }
.ftr-contact li { display: flex; flex-wrap: wrap; gap: 10px; align-items: baseline; }
.ftr-k {
  min-width: 74px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .08em;
}
.ftr-v {
  color: #D6DFD7;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .01em;
  word-break: break-word;
}
.ftr-v--sans {
  font-family: var(--font-body);
  font-size: 14px;
}
.ftr-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  align-content: start;
  color: var(--muted);
  font-size: 12.5px;
  letter-spacing: .04em;
}

/* ============================================================
   显现动画
   ============================================================ */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .36s var(--ease), transform .36s var(--ease);
  transition-delay: var(--reveal-delay, 0s);
}
.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
}

@media (min-width: 1180px) {
  .hdr-wire { display: block; }
}

@media (max-width: 1023px) {
  :root { --hdr-h: 58px; }

  body {
    padding-left: 0;
    padding-bottom: 76px;
    background-attachment: scroll;
  }

  .nav-toggle { display: inline-flex; }

  .site-rail {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    width: min(88vw, 340px);
    height: 100dvh;
    padding: calc(var(--hdr-h) + 18px) 20px 30px;
    justify-content: flex-start;
    gap: 20px;
    background: linear-gradient(180deg, #10231A, #0B0F0D 88%);
    border-right: 0;
    border-left: 1px solid var(--line);
    transform: translateX(102%);
    transition: transform .3s var(--ease);
    z-index: 75;
  }
  .site-rail[data-open] {
    transform: translateX(0);
    box-shadow: -26px 0 60px -30px #000;
  }

  .rail-nav { align-items: stretch; gap: 0; }
  .rail-nav__link {
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 14px 12px;
    border-bottom: 1px solid rgba(36, 51, 43, .7);
    font-size: 16px;
  }
  .rail-nav__link::before { display: none; }
  .rail-nav__link[aria-current="page"] {
    border-left: 3px solid var(--home);
    background: rgba(200, 255, 61, .07);
  }
  .rail-nav__label {
    writing-mode: horizontal-tb;
    font-size: 16px;
    letter-spacing: .06em;
  }
  .rail-nav__idx { font-size: 11px; }

  .rail-side {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 10px;
    margin-top: 6px;
    padding-top: 18px;
  }
  .rail-side .side-pill { width: auto; min-width: 74px; }

  .side-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 70;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px calc(9px + env(safe-area-inset-bottom, 0px));
    background: linear-gradient(180deg, rgba(16, 35, 26, .94), rgba(11, 15, 13, .99));
    border-top: 1px solid var(--line);
    backdrop-filter: blur(8px);
  }
  .side-bar__cap {
    margin-right: auto;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .14em;
  }
  .side-bar .side-pill { width: auto; min-width: 88px; padding: 0 14px; }

  .ftr-top { grid-template-columns: minmax(0, 1fr); }
  .ftr-bottom { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 900px) {
  .grid--split,
  .grid--split-rev { grid-template-columns: minmax(0, 1fr); }
  .grid--thirds { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
  .ftr-groups { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
}

@media (max-width: 860px) {
  .hdr-brand__line { display: none; }
  .hdr-actions .btn--ghost { display: none; }
  .hdr-brand__name { font-size: 15.5px; }
}

@media (max-width: 560px) {
  .hdr-actions .btn { display: none; }
  .hdr-brand__mark { width: 30px; height: 30px; font-size: 14px; }
}

/* ============================================================
   可访问性 / 减少动效
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    transition-delay: 0ms !important;
  }
  .js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .site-rail { transition: none; }
}

@media print {
  .site-header,
  .side-bar { display: none; }
  body { padding: 0; background: #fff; color: #000; }
}