/* =====================================================================
   Home体育 · 共享外壳样式 /assets/site.css
   深海底墨绿 + 暗夜蓝基底，荧光青指路，珊瑚橙行动，记分牌黄状态
   ===================================================================== */

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

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

body, h1, h2, h3, h4, h5, h6, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video, canvas { display: block; max-width: 100%; }
button { background: none; border: 0; padding: 0; font: inherit; color: inherit; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --bg-abyss: #05130F;
  --bg-night: #0A1A2B;
  --panel: #0E2620;
  --edge: #1C3B36;
  --neon: #3AEDD4;
  --coral: #FF6A45;
  --score: #FFCB5C;
  --ink: #EAF4F1;
  --muted: #93A9A4;
  --data-blue: #2F6B9E;

  --rail-w: 264px;
  --header-h: 60px;
  --page-max: 1180px;
  --gutter: clamp(16px, 4vw, 48px);
  --stack: clamp(28px, 5vw, 56px);

  --radius: 3px;
  --shadow-float: 8px 8px 0 rgba(3, 10, 8, .55);
  --shadow-panel: 0 24px 48px -42px rgba(0, 0, 0, .95);

  --ease: cubic-bezier(.22, 1, .36, 1);
  --dur: 480ms;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

/* ---------- 3. 基底与中文排版 ---------- */
body {
  min-height: 100%;
  background-color: var(--bg-abyss);
  background-image:
    radial-gradient(1100px 560px at 84% -12%, rgba(58, 237, 212, .08), transparent 62%),
    radial-gradient(900px 520px at 6% 104%, rgba(255, 106, 69, .07), transparent 66%),
    linear-gradient(180deg, #05130F 0%, #061713 45%, #05130F 100%);
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.8;
  letter-spacing: .01em;
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.005em;
}

h1 { font-size: clamp(28px, 4vw, 56px); }
h2 { font-size: clamp(22px, 3vw, 36px); }
h3 { font-size: clamp(18px, 2vw, 24px); }
h4 { font-size: 17px; }

p { text-wrap: pretty; }

a { color: var(--neon); text-decoration: none; }
a:hover { color: var(--score); }

.num, time, [data-num] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -.01em;
}

main { display: block; padding-block: clamp(28px, 5vw, 64px); }
#main-content:focus { outline: none; }
[data-section]:focus { outline: none; }

/* ---------- 4. 焦点 ---------- */
:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 12px;
  z-index: 120;
  padding: 11px 18px;
  background: var(--neon);
  color: #04120F;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .06em;
  text-decoration: none;
  border-radius: 2px;
  transition: top 180ms var(--ease);
}
.skip-link:focus { top: 12px; color: #04120F; }

/* ---------- 5. 头部外壳 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  color: var(--ink);
  background: #071A16;
  border-bottom: 1px solid var(--edge);
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: 10px;
  height: var(--header-h);
  padding-inline: clamp(12px, 3.5vw, 20px);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: var(--ink);
  text-decoration: none;
  flex: 1 1 auto;
}
.brand:hover { color: var(--ink); }

.brand__mark {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--neon);
  border-radius: 2px;
  background: rgba(58, 237, 212, .10);
  color: var(--neon);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
}

.brand__text { display: flex; flex-direction: column; min-width: 0; }

.brand__name {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .03em;
  white-space: nowrap;
}

.brand__tag {
  font-size: 11.5px;
  line-height: 1.5;
  letter-spacing: .14em;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 轨道说明文字：移动端隐藏 */
.site-header__utility { display: none; }

/* 头部动作 */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

/* 汉堡按钮 */
.nav-toggle {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--edge);
  border-radius: 2px;
  background: rgba(10, 26, 43, .7);
  color: var(--neon);
}
.nav-toggle:hover { border-color: var(--neon); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: background 200ms var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform 240ms var(--ease), top 240ms var(--ease);
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.site-header[data-open] .nav-toggle__bars { background: transparent; }
.site-header[data-open] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

/* ---------- 6. 主导航（移动抽屉 / 桌面轨道） ---------- */
.site-nav {
  position: fixed;
  top: var(--header-h);
  bottom: 0;
  left: 0;
  z-index: 62;
  width: min(86vw, 332px);
  padding: 22px clamp(16px, 4vw, 24px) 28px;
  background: linear-gradient(180deg, #0A1A2B 0%, #061713 100%);
  border-right: 1px solid var(--edge);
  overflow-y: auto;
  transform: translateX(-105%);
  transition: transform 320ms var(--ease);
}
.site-nav[data-open],
.site-header[data-open] .site-nav { transform: translateX(0); }

.site-nav__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--muted);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--edge);
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 14px;
}

.site-nav__item { display: block; }

.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 12px;
  border-left: 2px solid transparent;
  color: var(--ink);
  text-decoration: none;
  transition: background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}
.site-nav__link:hover {
  background: rgba(58, 237, 212, .08);
  color: var(--neon);
}

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--muted);
}

.site-nav__name {
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: .05em;
}

.site-nav__link[aria-current="page"] {
  border-left-color: var(--coral);
  background: rgba(255, 106, 69, .12);
  color: var(--score);
}
.site-nav__link[aria-current="page"] .site-nav__index { color: var(--coral); }
.site-nav__link[aria-current="page"] .site-nav__name { font-weight: 700; }

.site-nav__foot {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--edge);
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--score);
  box-shadow: 0 0 0 4px rgba(255, 203, 92, .16);
}

.site-nav__status {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

/* 抽屉遮罩 */
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 55;
  background: rgba(3, 10, 8, .72);
  opacity: 0;
  visibility: hidden;
  transition: opacity 240ms var(--ease), visibility 240ms var(--ease);
}
.nav-scrim[data-open] { opacity: 1; visibility: visible; }

/* 阅读进度 */
.read-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(28, 59, 54, .7);
  pointer-events: none;
}
.read-progress__bar {
  display: block;
  width: calc(var(--p, 0) * 100%);
  height: 100%;
  background: linear-gradient(90deg, var(--neon), var(--coral));
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border: 1px solid var(--edge);
  border-radius: 2px;
  background: transparent;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  line-height: 1;
  text-decoration: none;
  transition: background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease), transform 200ms var(--ease);
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }

.btn--ghost { border-color: var(--edge); color: var(--ink); }
.btn--ghost:hover { border-color: var(--neon); color: var(--neon); background: rgba(58, 237, 212, .07); }

.btn--coral { background: var(--coral); border-color: var(--coral); color: #170704; font-weight: 700; }
.btn--coral:hover { background: #FF7E5D; border-color: #FF7E5D; color: #170704; }

.btn--neon { background: var(--neon); border-color: var(--neon); color: #04120F; font-weight: 700; }
.btn--neon:hover { background: #63F1DC; border-color: #63F1DC; color: #04120F; }

.btn--sm { padding: 7px 11px; font-size: 12.5px; letter-spacing: .05em; white-space: nowrap; }
.btn--block { width: 100%; }

/* ---------- 8. 容器 / 网格 ---------- */
.container {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.prose { max-width: 68ch; }
.prose p { margin-bottom: 1.2em; }
.prose h2, .prose h3 { margin: 1.6em 0 .6em; }
.prose ul, .prose ol { margin: 0 0 1.2em; padding-left: 1.15em; list-style: disc; }
.prose li { margin-bottom: .4em; }
.prose a { border-bottom: 1px solid rgba(58, 237, 212, .5); }
.prose a:hover { border-bottom-color: var(--score); }

.grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.span-3, .span-4, .span-6, .span-8, .span-9, .span-12 { grid-column: span 4; }

/* ---------- 9. 画板 / 卡片 ---------- */
.panel {
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 36px);
  box-shadow: var(--shadow-panel);
}
.panel--night { background: linear-gradient(180deg, rgba(10, 26, 43, .96), rgba(5, 19, 15, .96)); }
.panel--flat { box-shadow: none; background: rgba(14, 38, 32, .55); }

.float-card {
  position: relative;
  background: rgba(14, 38, 32, .94);
  border: 1px solid var(--neon);
  border-radius: var(--radius);
  box-shadow: var(--shadow-float);
  padding: clamp(16px, 2.4vw, 24px);
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}
.float-card:hover { transform: translateY(-4px); border-color: var(--score); }

.divider { height: 1px; background: var(--edge); border: 0; margin-block: var(--stack); }

/* ---------- 10. 标签 / 索引 / 数字 ---------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--neon);
}

.section-num {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: clamp(64px, 12vw, 180px);
  line-height: .86;
  letter-spacing: -.03em;
  color: rgba(58, 237, 212, .10);
  -webkit-text-stroke: 1px rgba(28, 59, 54, .9);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--edge);
  border-radius: 2px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
  background: rgba(10, 26, 43, .6);
}
.tag--live { border-color: rgba(255, 203, 92, .6); color: var(--score); }
.tag--score { border-color: rgba(255, 106, 69, .55); color: var(--coral); }

.stat { display: flex; flex-direction: column; gap: 4px; }
.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--neon);
}
.stat__label { font-size: 12.5px; letter-spacing: .12em; color: var(--muted); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--neon);
  border-bottom: 1px solid rgba(58, 237, 212, .35);
  padding-bottom: 2px;
}
.link-arrow::after { content: "→"; transition: transform 200ms var(--ease); }
.link-arrow:hover { color: var(--score); border-bottom-color: var(--score); }
.link-arrow:hover::after { transform: translateX(4px); }

/* ---------- 11. 面包屑 / 章节目录 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--muted);
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--neon); }
.breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb__sep { color: var(--edge); }

.toc { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.toc__link {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--muted);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  cursor: pointer;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}
.toc__link:hover { color: var(--ink); }
.toc__link[data-active] { color: var(--neon); border-bottom-color: var(--neon); }
[data-scroll-link] { cursor: pointer; }

/* ---------- 12. 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(120% 120% at 18% 0%, rgba(58, 237, 212, .12), transparent 62%),
    linear-gradient(160deg, #0E2620 0%, #05130F 100%);
}
.media img, .media video { width: 100%; height: 100%; object-fit: cover; }
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--placeholder::after {
  content: attr(data-label);
  position: absolute;
  inset: auto 14px 14px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--muted);
}
.media__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink);
  background: linear-gradient(180deg, transparent, rgba(5, 19, 15, .9));
}

/* ---------- 13. 页脚 ---------- */
.site-footer {
  margin-top: clamp(48px, 8vw, 96px);
  padding: clamp(40px, 6vw, 72px) 0 30px;
  background: linear-gradient(180deg, rgba(10, 26, 43, .72) 0%, #05130F 100%);
  border-top: 1px solid var(--edge);
  color: var(--muted);
  font-size: 15px;
}

.site-footer__inner {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.site-footer__top {
  display: grid;
  gap: 30px;
  grid-template-columns: 1fr;
}

.site-footer__brand { display: flex; flex-direction: column; gap: 14px; }
.brand--footer { flex: 0 0 auto; }
.brand--footer .brand__name { color: var(--ink); }

.site-footer__blurb {
  max-width: 40ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.site-footer__col { display: flex; flex-direction: column; gap: 12px; }

.site-footer__title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .2em;
  color: var(--neon);
  text-transform: uppercase;
}

.site-footer__list { display: flex; flex-direction: column; gap: 8px; }

.site-footer__link {
  color: var(--ink);
  font-size: 14.5px;
  letter-spacing: .04em;
  border-bottom: 1px solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}
.site-footer__link:hover { color: var(--neon); border-bottom-color: var(--neon); }

.site-footer__list--plain { gap: 10px; }

.site-footer__text {
  display: flex;
  gap: 10px;
  font-size: 14px;
  color: var(--ink);
  overflow-wrap: anywhere;
}
.site-footer__k {
  flex: 0 0 34px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
  line-height: 1.9;
}

.site-footer__note {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--edge);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--muted);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 18px;
}

.site-footer__copy {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.site-footer__legal { display: flex; flex-wrap: wrap; gap: 18px; }

/* 返回顶部 */
.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 50;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--edge);
  border-radius: 2px;
  background: rgba(10, 26, 43, .92);
  color: var(--neon);
  font-size: 17px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 240ms var(--ease), transform 240ms var(--ease), visibility 240ms var(--ease), border-color 200ms var(--ease);
}
.to-top[data-visible] { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { border-color: var(--neon); }

/* ---------- 14. 显现动画 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
html.js [data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 15. 平板 ---------- */
@media (min-width: 640px) {
  .grid { grid-template-columns: repeat(8, minmax(0, 1fr)); }
  .span-3, .span-4 { grid-column: span 4; }
  .span-6, .span-8, .span-9, .span-12 { grid-column: span 8; }

  .site-footer__top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer__brand { grid-column: 1 / -1; }
}

/* ---------- 16. 桌面：左侧轨道 ---------- */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }

  .skip-link { left: calc(var(--rail-w) + 16px); }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--rail-w);
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, #081D18 0%, #061410 58%, #05130F 100%);
    border-bottom: 0;
    border-right: 1px solid var(--edge);
  }

  .site-header__bar {
    display: block;
    height: auto;
    padding: 30px 26px 0;
  }

  .brand { flex: 0 0 auto; }

  .site-header__utility {
    display: block;
    margin-top: 16px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--edge);
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: .14em;
    line-height: 1.7;
    color: var(--muted);
  }

  .site-header__actions { margin-top: 18px; }

  .nav-toggle { display: none; }

  .site-nav {
    position: static;
    transform: none;
    width: auto;
    padding: 20px 26px 26px;
    background: none;
    border-right: 0;
    overflow: visible;
  }

  .site-nav__label { border-bottom: 0; padding-bottom: 4px; }

  .site-nav__list { margin-top: 8px; }

  .site-nav__link { padding: 10px 12px; }

  .site-nav__foot { margin-top: auto; }

  .read-progress {
    left: auto;
    right: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    height: auto;
    background: rgba(28, 59, 54, .5);
  }
  .read-progress__bar {
    width: 100%;
    height: calc(var(--p, 0) * 100%);
    background: linear-gradient(180deg, var(--neon), var(--coral));
  }

  .grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .span-3 { grid-column: span 3; }
  .span-4 { grid-column: span 4; }
  .span-6 { grid-column: span 6; }
  .span-8 { grid-column: span 8; }
  .span-9 { grid-column: span 9; }
  .span-12 { grid-column: span 12; }

  .site-footer__top { grid-template-columns: 1.5fr .9fr .9fr 1.4fr; gap: 40px; }
  .site-footer__brand { grid-column: auto; }

  .to-top { right: 32px; bottom: 32px; }
}

@media (min-width: 1440px) {
  :root { --rail-w: 288px; --page-max: 1240px; }
}

/* ---------- 17. 小屏微调 ---------- */
@media (max-width: 559px) {
  .brand__tag { display: none; }
  .brand__mark { width: 30px; height: 30px; font-size: 13px; }
  .brand__name { font-size: 16px; }
  .btn--sm { padding: 7px 9px; font-size: 12px; }
}

@media (max-width: 379px) {
  .site-header__actions .btn--ghost { display: none; }
}

/* ---------- 18. 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;
  }

  html.js [data-reveal] { opacity: 1; transform: none; }
  .float-card:hover { transform: none; }
  .to-top { transform: none; }
}