/* =========================================================
   溜溜体育 · 共享站点样式 /assets/site.css
   深墨绿球场底 · 荧光青数据高亮 · 炽热橙行动色
   ========================================================= */

*, *::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, details, summary { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

:root {
  --ink: #0B2A25;
  --ink-2: #123B33;
  --ink-deep: #082019;
  --cyan: #35F0D0;
  --orange: #FF6A2B;
  --gold: #F2C14E;
  --ruby: #B2313F;
  --violet: #1B2A4A;
  --white: #F2F7F5;
  --mute: #A9BDB6;
  --body-text: #DCE9E4;
  --line: rgba(53, 240, 208, .2);
  --line-soft: rgba(242, 247, 245, .12);
  --font-display: "Arial Narrow", "Helvetica Neue Condensed", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
  --shell: 1280px;
  --pad: clamp(1.1rem, 4vw, 3rem);
  --nav-break: 1040px;
}

/* ---------- 基座：球场网格 + 泛光灯晕 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    radial-gradient(circle at 78% -8%, rgba(53, 240, 208, .10), transparent 44%),
    radial-gradient(circle at 6% 14%, rgba(255, 106, 43, .07), transparent 38%),
    repeating-linear-gradient(90deg, rgba(242, 247, 245, .026) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(242, 247, 245, .026) 0 1px, transparent 1px 64px);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .012em;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: .01em;
  color: var(--white);
}

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

#main-content { display: block; scroll-margin-top: 120px; }

/* ---------- 跳转链 ---------- */
.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 99;
  padding: .65rem 1.1rem;
  background: var(--cyan);
  color: #06211C;
  font-weight: 700;
  font-size: .86rem;
  border-radius: 0 0 10px 10px;
  transition: top .2s ease;
}
.skip-link:focus { top: 0; }

/* ---------- 阅读进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: 90;
  pointer-events: none;
}

/* ---------- 版心 ---------- */
.shell {
  width: min(var(--shell), 100%);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* =========================================================
   头部：紧凑命令栏
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(11, 42, 37, .94);
  backdrop-filter: blur(10px) saturate(140%);
  border-bottom: 1px solid var(--line-soft);
}
.header-bar { position: relative; }
.header-shell {
  display: flex;
  align-items: center;
  gap: clamp(.5rem, 2vw, 1.4rem);
  min-height: 64px;
  padding-block: .45rem;
}

.brand { display: flex; align-items: center; gap: .6rem; flex: 0 0 auto; }
.brand-mark {
  position: relative;
  width: 30px; height: 30px;
  border-radius: 9px 3px 9px 3px;
  background: linear-gradient(140deg, var(--cyan), #0E7D6B 68%);
  box-shadow: 0 0 0 1px rgba(53, 240, 208, .35), 0 0 18px rgba(53, 240, 208, .22);
  flex: 0 0 auto;
}
.brand-mark::after {
  content: "";
  position: absolute; inset: 9px;
  border-radius: 50%;
  border: 2px solid rgba(11, 42, 37, .7);
}
.brand-mark-lg { width: 38px; height: 38px; border-radius: 12px 4px 12px 4px; }
.brand-mark-lg::after { inset: 11px; }
.brand-text { display: block; }
.brand-name { display: block; font-size: 1.02rem; font-weight: 800; letter-spacing: .06em; }
.brand-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .16em;
  color: var(--mute);
  text-transform: uppercase;
}

.cmd-nav { display: flex; align-items: center; gap: .1rem; margin-inline: auto; }
.cmd-link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: .32rem;
  padding: .5rem .62rem;
  color: var(--mute);
  font-size: .84rem;
  letter-spacing: .02em;
  transition: color .2s ease, background-color .2s ease;
}
.cmd-index {
  font-family: var(--font-mono);
  font-size: .58rem;
  letter-spacing: .1em;
  color: var(--gold);
  opacity: .85;
}
.cmd-label { white-space: nowrap; }
.cmd-link::after {
  content: "";
  position: absolute;
  left: .62rem; right: .62rem; bottom: .16rem;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .22s ease;
}
.cmd-link:hover { color: var(--white); background: rgba(53, 240, 208, .07); }
.cmd-link:hover::after { transform: scaleX(.55); }
.cmd-link[aria-current="page"] { color: var(--cyan); background: rgba(53, 240, 208, .1); }
.cmd-link[aria-current="page"]::after { transform: scaleX(1); }
.cmd-link[aria-current="page"] .cmd-index { color: var(--cyan); }

.header-tail { display: flex; align-items: center; gap: .55rem; margin-left: auto; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: .5rem;
  padding: .48rem .78rem;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  color: var(--white);
  font-size: .8rem;
}
.nav-toggle:hover { border-color: rgba(53, 240, 208, .5); }
.nav-toggle-bars { display: grid; gap: 4px; width: 16px; }
.nav-toggle-bars i {
  display: block; height: 2px; border-radius: 2px;
  background: var(--cyan);
  transition: transform .22s ease, opacity .22s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:first-child { transform: translateY(3px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:last-child { transform: translateY(-3px) rotate(-45deg); }
.nav-toggle-label { font-family: var(--font-mono); letter-spacing: .12em; font-size: .68rem; }

.header-strip {
  background: var(--ink-2);
  border-top: 1px solid rgba(53, 240, 208, .1);
}
.strip-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 34px;
  padding-block: .25rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
}
.status-pill { display: inline-flex; align-items: center; gap: .5rem; color: var(--cyan); }
.pulse {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(53, 240, 208, .55);
  animation: pulse 2.4s ease-out infinite;
  flex: 0 0 auto;
}
@keyframes pulse {
  70% { box-shadow: 0 0 0 9px rgba(53, 240, 208, 0); }
  100% { box-shadow: 0 0 0 0 rgba(53, 240, 208, 0); }
}
.strip-hint { color: var(--mute); opacity: .78; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .62rem 1.15rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .86rem;
  font-weight: 600;
  letter-spacing: .02em;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.btn-primary {
  background: var(--orange);
  color: #1B0A03;
  box-shadow: 0 6px 22px rgba(255, 106, 43, .26);
}
.btn-primary:hover { background: #FF7C46; }
.btn-ghost { border-color: rgba(53, 240, 208, .45); color: var(--cyan); }
.btn-ghost:hover { background: rgba(53, 240, 208, .12); }
.btn-quiet { border-color: var(--line-soft); color: var(--mute); }
.btn-quiet:hover { color: var(--white); border-color: rgba(242, 247, 245, .32); }
.btn-sm { padding: .4rem .85rem; font-size: .78rem; }

/* =========================================================
   页面结构：章节、色带、栅格与悬浮数据条
   ========================================================= */
.section { position: relative; padding-block: clamp(3rem, 7vw, 6rem); }
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .5rem 1.1rem;
  margin-bottom: clamp(1.4rem, 3vw, 2.6rem);
}
.section-num {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  color: var(--gold);
}
.section-num::after {
  content: "";
  display: inline-block;
  width: 34px; height: 2px;
  margin-left: .7rem;
  vertical-align: middle;
  background: var(--cyan);
}
.section-label {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .2em;
  color: var(--mute);
  text-transform: uppercase;
}
.section-title { font-size: clamp(1.7rem, 4.4vw, 2.9rem); }
.section-desc { max-width: 62ch; color: var(--mute); font-size: .95rem; margin-top: .6rem; }

.color-band { display: block; width: 100%; height: 10px; border: 0; }
.band-cyan { background: linear-gradient(90deg, var(--cyan), rgba(53, 240, 208, 0)); }
.band-orange { background: linear-gradient(90deg, var(--orange), rgba(255, 106, 43, 0)); }
.band-violet { background: linear-gradient(90deg, var(--violet), var(--cyan)); }
.band-gold { background: linear-gradient(90deg, var(--gold), var(--ruby)); }

.grid-12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(1rem, 2.2vw, 2rem); }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

.lede { font-size: clamp(1.02rem, 1.6vw, 1.2rem); color: var(--body-text); max-width: 60ch; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  padding-top: clamp(1rem, 3vw, 1.8rem);
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  color: var(--mute);
}
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb .sep { color: rgba(169, 189, 182, .5); }
.breadcrumb [aria-current="page"] { color: var(--white); }

/* 非对称栅格 + 左侧常驻数据条 */
.layout-rail {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: clamp(1.4rem, 3vw, 3rem);
  align-items: start;
}
.side-rail { position: sticky; top: 122px; display: grid; gap: .55rem; }
.rail-card {
  padding: .85rem .95rem;
  background: linear-gradient(160deg, var(--ink-2), rgba(18, 59, 51, .45));
  border-left: 2px solid var(--cyan);
  border-radius: 0 10px 10px 0;
}
.rail-label {
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .18em;
  color: var(--mute);
}
.rail-value {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.6rem;
  line-height: 1.15;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}
.rail-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .6rem;
  padding-block: .32rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--mute);
  border-bottom: 1px dashed rgba(242, 247, 245, .1);
}
.rail-row:last-child { border-bottom: 0; }
.rail-note { font-size: .72rem; color: var(--mute); line-height: 1.6; }

/* ---------- 数据组件 ---------- */
.data-num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: .02em; }
.stat {
  display: grid;
  gap: .25rem;
  padding: .95rem 1.05rem;
  background: linear-gradient(150deg, rgba(18, 59, 51, .92), rgba(11, 42, 37, .5));
  border: 1px solid var(--line-soft);
  border-radius: 2px 12px 2px 12px;
}
.stat-value {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .16em;
  color: var(--mute);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .2rem .5rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
}
.tag-cyan { background: rgba(53, 240, 208, .14); color: var(--cyan); border: 1px solid rgba(53, 240, 208, .4); }
.tag-gold { background: rgba(242, 193, 78, .16); color: var(--gold); border: 1px solid rgba(242, 193, 78, .42); }
.tag-ruby { background: rgba(178, 49, 63, .22); color: #F2A2AB; border: 1px solid rgba(178, 49, 63, .62); }

/* ---------- 筛选 chip ---------- */
.chip-row { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .4rem .88rem;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  color: var(--mute);
  font-size: .8rem;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}
.chip:hover { color: var(--white); border-color: rgba(53, 240, 208, .42); }
.chip[aria-pressed="true"],
.chip.is-active {
  background: rgba(53, 240, 208, .14);
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 折叠 ---------- */
.fold { border-top: 1px solid var(--line-soft); }
.fold:last-of-type { border-bottom: 1px solid var(--line-soft); }
.fold summary {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: 1rem 0;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  color: var(--white);
}
.fold summary::-webkit-details-marker { display: none; }
.fold summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  color: var(--cyan);
}
.fold[open] summary::after { content: "–"; }
.fold-body { padding-bottom: 1.2rem; color: var(--body-text); font-size: .95rem; }

/* ---------- 锚点索引 ---------- */
.anchor-index {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  padding: .7rem 0;
  border-block: 1px solid var(--line-soft);
}
.anchor-index a {
  padding: .3rem .62rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--mute);
  transition: color .2s ease, background-color .2s ease;
}
.anchor-index a:hover { color: var(--cyan); background: rgba(53, 240, 208, .08); }
.anchor-index a[aria-current="true"] { color: #06211C; background: var(--cyan); }

/* ---------- 正文排版 ---------- */
.prose { max-width: 70ch; color: var(--body-text); font-size: 1rem; line-height: 1.85; }
.prose p + p { margin-top: 1rem; }
.prose h3 { font-size: 1.25rem; margin: 1.8rem 0 .6rem; }
.prose strong { color: var(--white); }
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(53, 240, 208, .42); }
.prose ul, .prose ol { display: grid; gap: .5rem; margin-top: .85rem; }
.prose li { position: relative; padding-left: 1.15rem; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0; top: .78em;
  width: 8px; height: 2px;
  background: var(--cyan);
}

/* ---------- 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: 14px 4px 14px 4px;
  background: var(--ink-2);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}
.media-frame--wide img { aspect-ratio: 21 / 9; }
.media-frame--tall img { aspect-ratio: 3 / 4; }
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 42, 37, 0) 48%, rgba(11, 42, 37, .72));
  pointer-events: none;
}
.media-caption {
  margin-top: .55rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--mute);
}

/* ---------- 复制按钮 ---------- */
.copy-btn {
  padding: .25rem .5rem;
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .12em;
  color: var(--mute);
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}
.copy-btn:hover { color: var(--cyan); border-color: rgba(53, 240, 208, .45); }
.copy-btn.is-done { background: var(--cyan); border-color: var(--cyan); color: #06211C; }

/* ---------- 滚动显现 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .55s ease-out, transform .55s ease-out;
}
.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* =========================================================
   页脚
   ========================================================= */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
  border-top: 1px solid var(--line-soft);
  padding-bottom: 1.6rem;
}
.footer-shell { padding-top: clamp(2rem, 5vw, 3.4rem); }
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr) minmax(0, 1.25fr);
  gap: clamp(1.6rem, 4vw, 3rem);
}
.footer-brand { display: grid; gap: .1rem; align-content: start; }
.footer-brand-name {
  margin-top: .7rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: .06em;
  color: var(--white);
}
.footer-brand-line { max-width: 32ch; font-size: .86rem; line-height: 1.7; color: var(--mute); }
.footer-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.2rem; }
.footer-col { display: grid; gap: .5rem; align-content: start; }
.footer-col-title {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .2em;
  color: var(--gold);
}
.footer-link {
  width: fit-content;
  font-size: .9rem;
  color: #CBDCD6;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.footer-link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }
.footer-contact { display: grid; gap: .6rem; align-content: start; }
.footer-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  font-size: .86rem;
  color: #CBDCD6;
}
.footer-key {
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .16em;
  color: var(--mute);
}
.footer-value { word-break: break-all; }
.footer-note { font-size: .78rem; line-height: 1.7; color: var(--mute); }
.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: .6rem 1.4rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--mute);
}
.footer-legal, .footer-copy { color: var(--mute); }

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1040px) {
  .nav-toggle { display: inline-flex; }
  .cmd-nav {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    z-index: 10;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: .35rem var(--pad) 1rem;
    background: var(--ink-2);
    border-top: 1px solid rgba(53, 240, 208, .28);
    box-shadow: 0 26px 44px rgba(3, 15, 12, .6);
    max-height: calc(100vh - 104px);
    overflow-y: auto;
  }
  .cmd-nav[data-open] { display: flex; }
  .cmd-link {
    padding: .85rem .2rem;
    font-size: .98rem;
    border-bottom: 1px solid rgba(242, 247, 245, .08);
  }
  .cmd-link::after { left: .2rem; right: auto; bottom: .5rem; width: 26px; }
  .cmd-link:hover::after { transform: scaleX(1); }
  .cmd-link[aria-current="page"] { background: rgba(53, 240, 208, .08); }

  .layout-rail { grid-template-columns: 1fr; }
  .side-rail { position: static; top: auto; }

  .footer-top { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .grid-12 > * { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .header-shell { min-height: 58px; }
  .strip-hint { display: none; }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-base { justify-content: flex-start; }
}

@media (max-width: 560px) {
  body { font-size: 15px; }
  .brand-sub { display: none; }
  .header-cta { display: none; }
  .footer-cols { grid-template-columns: 1fr; }
  .stat-value { font-size: 1.7rem; }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
  .scroll-progress { transition: none; }
}