/* ============================================================
   博澳体育 · 联赛专题 /assets/site.css
   共享外壳：reset · 变量 · 中文排版 · 命令栏头部 · 蓝图页脚 · 通用组件
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
}

body { margin: 0; }

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

img, svg, video { display: block; max-width: 100%; }

button, input, select, textarea { font: inherit; color: inherit; }

a { color: inherit; }

table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #081A2E;
  --ink-800: #10283F;
  --ink-700: #16324C;
  --cream: #F5EFE2;
  --cream-dim: #DED6C5;
  --brown: #1A1714;
  --cyan: #1FE0C0;
  --orange: #FF6B2C;
  --gold: #F5C451;
  --gold-deep: #C9922A;
  --violet: #7A5CFF;
  --warm-red: #FF4D5E;
  --graphite: #5A6472;
  --teal: #1E7F8C;

  --line: rgba(90, 100, 114, 0.42);
  --line-soft: rgba(90, 100, 114, 0.22);
  --line-cyan: rgba(31, 224, 192, 0.30);
  --line-gold: rgba(201, 146, 42, 0.48);

  --font-head: "Oswald", "Barlow Condensed", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Inter", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", Consolas, "Courier New", monospace;

  --wrap: 1400px;
  --pad-x: clamp(16px, 3vw, 40px);
  --gap: 8px;

  --radius: 14px;
  --radius-sm: 6px;

  --dur-fast: 150ms;
  --dur: 260ms;
  --dur-slow: 420ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础与中文排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  color: var(--cream);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(1100px 620px at 82% -12%, rgba(255, 107, 44, 0.12), transparent 62%),
    radial-gradient(760px 520px at 4% 8%, rgba(31, 224, 192, 0.09), transparent 66%),
    linear-gradient(rgba(90, 100, 114, 0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 100, 114, 0.13) 1px, transparent 1px);
  background-size: auto, auto, 48px 48px, 48px 48px;
  background-attachment: fixed, fixed, scroll, scroll;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0.02em;
}

h1 { font-size: clamp(34px, 5.2vw, 60px); text-transform: uppercase; }
h2 { font-size: clamp(24px, 3.2vw, 36px); }
h3 { font-size: clamp(18px, 2.1vw, 24px); }
h4 { font-size: 17px; }

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

strong { color: var(--gold); font-weight: 700; }
em { font-style: normal; color: var(--cyan); }

#main-content { display: block; min-height: 42vh; }
#main-content:focus { outline: none; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* 焦点环 */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 4. 头部命令栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: linear-gradient(180deg, rgba(8, 26, 46, 0.99), rgba(8, 26, 46, 0.94));
  border-bottom: 1px solid var(--line-cyan);
  box-shadow: 0 18px 42px rgba(2, 9, 18, 0.55);
}

.skip-link {
  position: absolute;
  left: 14px;
  top: -120px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 0 0 8px 8px;
  background: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 0; }

.cmdbar {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  min-height: 62px;
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
}

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

.brand__mark {
  width: 30px;
  height: 30px;
  flex: none;
  border: 1px solid var(--line-cyan);
  border-radius: 5px;
  background:
    linear-gradient(135deg, var(--orange) 0 45%, var(--cyan) 45% 55%, rgba(31, 224, 192, 0.14) 55%);
  box-shadow: inset 0 0 0 3px rgba(8, 26, 46, 0.85);
  transition: transform var(--dur) var(--ease);
}
.brand:hover .brand__mark { transform: rotate(-12deg); }

.brand__text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }

.brand__name {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  text-transform: uppercase;
  white-space: nowrap;
}

/* 主导航 */
.site-nav {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  justify-content: center;
}

.site-nav__tag { display: none; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__item { display: block; }

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 11px 11px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: rgba(245, 239, 226, 0.72);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.site-nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--graphite);
  transition: color var(--dur) var(--ease);
}

.site-nav__link:hover {
  color: var(--cream);
  background: rgba(31, 224, 192, 0.07);
  border-color: var(--line-cyan);
}
.site-nav__link:hover .site-nav__idx { color: var(--cyan); }

.site-nav__link[aria-current="page"] {
  color: var(--cyan);
  background: rgba(31, 224, 192, 0.10);
  border-color: var(--line-cyan);
}
.site-nav__link[aria-current="page"] .site-nav__idx { color: var(--cyan); }
.site-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
}

/* 工具位 */
.cmdbar__tools {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cmd-tool {
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: rgba(245, 239, 226, 0.66);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.cmd-tool:hover {
  color: var(--cream);
  border-color: var(--line-gold);
  background: rgba(245, 196, 81, 0.08);
}

.cmd-cta {
  padding: 9px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--orange), #FF9257);
  color: #2A0F04;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 8px 22px rgba(255, 107, 44, 0.26);
  transition: transform var(--dur) var(--ease), filter var(--dur) var(--ease);
}
.cmd-cta:hover { transform: translateY(-1px); filter: brightness(1.06); }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-sm);
  background: rgba(16, 40, 63, 0.92);
  color: var(--cream);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--cyan); background: rgba(31, 224, 192, 0.10); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}
.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform var(--dur) var(--ease), opacity var(--dur-fast) var(--ease);
}

.nav-toggle__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.site-header[data-open] .nav-toggle {
  border-color: var(--orange);
  background: rgba(255, 107, 44, 0.12);
}
.site-header[data-open] .nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 状态轨 */
.cmdrail {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 5px var(--pad-x) 6px;
  display: flex;
  align-items: center;
  gap: 18px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--graphite);
}

.cmd-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cyan);
  white-space: nowrap;
}

.cmd-status__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(31, 224, 192, 0.16);
  animation: boao-pulse 2.4s var(--ease) infinite;
}

@keyframes boao-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.28; }
}

.cmdrail__coords { white-space: nowrap; }
.cmdrail__coords:first-of-type { margin-left: auto; }

/* 阅读进度 */
.scroll-progress {
  position: relative;
  height: 2px;
  background: rgba(90, 100, 114, 0.28);
  overflow: hidden;
}

.scroll-progress__bar {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--gold), var(--orange));
  transition: width 90ms linear;
}

/* ---------- 5. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 110px);
  background: linear-gradient(180deg, var(--ink-900), #061320 58%, #04101B);
  border-top: 1px solid var(--line-cyan);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 7px;
  background-image: repeating-linear-gradient(90deg, var(--gold-deep) 0 2px, transparent 2px 48px);
  opacity: 0.55;
  pointer-events: none;
}

.footer-grid {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(38px, 6vw, 74px) var(--pad-x) 30px;
  display: grid;
  grid-template-columns: minmax(250px, 1.5fr) repeat(3, minmax(150px, 1fr));
  gap: clamp(22px, 3vw, 44px);
}

.footer-brand__mark {
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  border: 1px solid var(--line-cyan);
  border-radius: 6px;
  background: linear-gradient(135deg, var(--orange) 0 45%, var(--cyan) 45% 55%, rgba(31, 224, 192, 0.14) 55%);
  box-shadow: inset 0 0 0 3px rgba(8, 26, 46, 0.85);
}

.footer-brand__name {
  margin: 0;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--cream);
  text-transform: uppercase;
}

.footer-brand__line {
  margin: 6px 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  text-transform: uppercase;
}

.footer-brand__note {
  max-width: 38ch;
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(245, 239, 226, 0.62);
}

.footer-brand__contact {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: rgba(245, 239, 226, 0.82);
}

.footer-brand__addr {
  margin: 0;
  max-width: 34ch;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--graphite);
}

.footer-col__title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 15px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}
.footer-col__title::before {
  content: "";
  width: 16px;
  height: 1px;
  background: var(--cyan);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: rgba(245, 239, 226, 0.72);
  text-decoration: none;
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.footer-col__link:hover { color: var(--gold); transform: translateX(3px); }

.footer-col__metric {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--graphite);
}
.footer-col__metric::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--orange);
  flex: none;
}

.footer-legal {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px var(--pad-x) 36px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 22px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--graphite);
}

.footer-legal__item { white-space: nowrap; }

.footer-legal__meta {
  margin-left: auto;
  color: rgba(245, 239, 226, 0.54);
  white-space: normal;
}

/* ---------- 6. 通用布局 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.section {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(40px, 7vw, 88px) var(--pad-x);
}

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px clamp(18px, 3vw, 40px);
  margin-bottom: clamp(20px, 3vw, 36px);
}

.section__title {
  font-family: var(--font-head);
  font-size: clamp(24px, 3.2vw, 36px);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.section__desc {
  max-width: 62ch;
  margin-left: auto;
  font-size: 14px;
  color: rgba(245, 239, 226, 0.68);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  flex: none;
}

.rule {
  position: relative;
  height: 1px;
  margin: clamp(24px, 4vw, 48px) 0;
  background: var(--line);
}
.rule::after {
  content: "";
  position: absolute;
  left: 0;
  top: -3px;
  width: 6px;
  height: 7px;
  background: var(--cyan);
}

/* 蓝图网格 */
.bp-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}

.bp-grid--gap { gap: clamp(12px, 2vw, 24px); }

.span-1 { grid-column: span 1; }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.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-9 { grid-column: span 9; }
.span-10 { grid-column: span 10; }
.span-11 { grid-column: span 11; }
.span-12 { grid-column: span 12; }

/* ---------- 7. 奶油纸阅读区 ---------- */
.paper-zone {
  background: var(--cream);
  color: var(--brown);
  border-radius: var(--radius);
  padding: clamp(24px, 5vw, 60px);
}

.prose {
  max-width: 76ch;
  background: var(--cream);
  color: var(--brown);
  border-radius: var(--radius);
  padding: clamp(22px, 4vw, 48px);
  font-size: 15px;
  line-height: 1.85;
}
.prose h2,
.prose h3,
.prose h4 { color: var(--brown); margin: 0 0 12px; }
.prose h2 { font-size: clamp(22px, 2.6vw, 30px); }
.prose h3 { font-size: 19px; }
.prose p { margin: 0 0 1em; }
.prose ul,
.prose ol { margin: 0 0 1em; padding-left: 1.2em; list-style: disc; }
.prose li { margin-bottom: 6px; }
.prose a {
  color: #0D6B5C;
  text-decoration: underline;
  text-decoration-color: rgba(31, 224, 192, 0.7);
  text-underline-offset: 3px;
}
.prose strong { color: var(--brown); }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(26, 23, 20, 0.07);
  border-radius: 4px;
  padding: 2px 6px;
}

/* ---------- 8. 按钮与标签 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease),
              border-color var(--dur) var(--ease), filter var(--dur) var(--ease);
}

.btn--primary {
  background: linear-gradient(135deg, var(--orange), #FF9257);
  color: #2A0F04;
  box-shadow: 0 10px 26px rgba(255, 107, 44, 0.24);
}
.btn--primary:hover { transform: translateY(-2px); filter: brightness(1.06); }

.btn--ghost {
  color: var(--cyan);
  border-color: var(--line-cyan);
  background: rgba(31, 224, 192, 0.06);
}
.btn--ghost:hover {
  border-color: var(--cyan);
  background: rgba(31, 224, 192, 0.13);
  transform: translateY(-2px);
}

.btn--gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-deep));
  color: var(--brown);
}
.btn--gold:hover { transform: translateY(-2px); filter: brightness(1.05); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(245, 239, 226, 0.78);
}
.chip--cyan { color: var(--cyan); border-color: var(--line-cyan); background: rgba(31, 224, 192, 0.08); }
.chip--gold { color: var(--gold); border-color: var(--line-gold); background: rgba(245, 196, 81, 0.08); }
.chip--orange { color: var(--orange); border-color: rgba(255, 107, 44, 0.42); background: rgba(255, 107, 44, 0.08); }

/* ---------- 9. 面板 ---------- */
.panel {
  position: relative;
  padding: clamp(16px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(16, 40, 63, 0.92), rgba(8, 26, 46, 0.94));
}

.panel--cyan { border-color: var(--line-cyan); }

.panel--paper {
  background: var(--cream);
  color: var(--brown);
  border-color: rgba(26, 23, 20, 0.16);
}
.panel--paper h2,
.panel--paper h3 { color: var(--brown); }

.panel__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--graphite);
}

/* ---------- 10. 指标 ---------- */
.metric {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.metric__value {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--cyan);
}
.metric__value--orange { color: var(--orange); }
.metric__value--gold {
  background: linear-gradient(180deg, var(--gold), var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.metric__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
}

.metric__note {
  font-size: 13px;
  color: rgba(245, 239, 226, 0.66);
}

/* 胜率色阶条 */
.streak-bar {
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--violet), var(--teal), var(--warm-red));
}

/* ---------- 11. 轨道模块 ---------- */
.rail {
  position: relative;
  padding: 16px 0 6px;
  border-top: 1px solid var(--line-cyan);
  border-bottom: 1px solid var(--line-soft);
}

.rail__track {
  display: flex;
  gap: clamp(12px, 1.6vw, 18px);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  padding: 4px var(--pad-x) 14px;
  scrollbar-color: var(--cyan) rgba(90, 100, 114, 0.25);
}
.rail__track::-webkit-scrollbar { height: 6px; }
.rail__track::-webkit-scrollbar-track { background: rgba(90, 100, 114, 0.22); }
.rail__track::-webkit-scrollbar-thumb { background: var(--cyan); border-radius: 999px; }
.rail__track:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }

.rail__item {
  flex: 0 0 clamp(232px, 26vw, 330px);
  scroll-snap-align: start;
}

/* ---------- 12. 媒体容器 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(140deg, var(--ink-800), var(--ink-900));
  aspect-ratio: 16 / 9;
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }

.media__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.88;
  filter: saturate(0.96) contrast(1.06);
}

.media__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(31, 224, 192, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 224, 192, 0.10) 1px, transparent 1px);
  background-size: 38px 38px;
}

.media__tag {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 5px 10px;
  border-radius: 4px;
  background: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.media__caption {
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--graphite);
}

/* ---------- 13. 折叠条文 ---------- */
.accordion { border-top: 1px solid var(--line-cyan); }

.accordion__item { border-bottom: 1px solid var(--line-soft); }

.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 2px;
  border: 0;
  background: none;
  color: var(--cream);
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-align: left;
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}
.accordion__trigger:hover { color: var(--cyan); }

.accordion__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.accordion__sign {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-left: auto;
}
.accordion__sign::before,
.accordion__sign::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
}
.accordion__sign::after { transform: rotate(90deg); transition: transform var(--dur) var(--ease); }
.accordion__trigger[aria-expanded="true"] .accordion__sign::after { transform: rotate(0deg); }

.accordion__panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--dur-slow) var(--ease);
}

.accordion__inner {
  padding: 0 2px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 239, 226, 0.72);
}

/* ---------- 14. 数据表 ---------- */
.data-table {
  width: 100%;
  font-size: 13.5px;
}

.data-table th {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line-cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--graphite);
  text-align: left;
}

.data-table td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--line-soft);
  color: rgba(245, 239, 226, 0.86);
}

.data-table tbody tr:hover { background: rgba(31, 224, 192, 0.05); }

.data-table__num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--cream);
}

/* ---------- 15. 面包屑 ---------- */
.breadcrumbs {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px var(--pad-x) 0;
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--graphite);
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.breadcrumbs__item:not(:last-child)::after {
  content: "/";
  color: var(--graphite);
  opacity: 0.6;
}

.breadcrumbs__link {
  color: rgba(245, 239, 226, 0.6);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
.breadcrumbs__link:hover { color: var(--cyan); }

.breadcrumbs__current { color: var(--gold); }

/* ---------- 16. 动效协议 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 17. 响应式 ---------- */
@media (max-width: 1199px) {
  .cmd-tool { display: none; }
}

@media (max-width: 1079px) {
  html { scroll-padding-top: 86px; }

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

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    z-index: 95;
    display: block;
    max-height: 80vh;
    overflow-y: auto;
    padding: 22px var(--pad-x) 30px;
    border-top: 2px solid var(--cyan);
    border-radius: 18px 18px 0 0;
    background: linear-gradient(180deg, rgba(16, 40, 63, 0.99), rgba(8, 26, 46, 1));
    box-shadow: 0 -24px 60px rgba(2, 9, 18, 0.7);
    transform: translateY(104%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--dur-slow) var(--ease), opacity var(--dur) var(--ease), visibility var(--dur);
  }

  .site-header[data-open] .site-nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav__tag {
    display: block;
    margin: 0 0 14px;
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--cyan);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-nav__link {
    display: flex;
    justify-content: flex-start;
    padding: 15px 12px;
    border-radius: 10px;
    border-color: transparent;
    border-bottom: 1px solid var(--line-soft);
    font-size: 15px;
  }

  .site-nav__link[aria-current="page"] { border-bottom-color: var(--line-cyan); }
  .site-nav__link[aria-current="page"]::after { display: none; }
  .site-nav__idx { font-size: 11px; }

  .cmdrail__coords:last-of-type { display: none; }
}

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }

  .span-3, .span-4 { grid-column: span 6; }
  .span-5, .span-7 { grid-column: span 12; }
}

@media (max-width: 767px) {
  body { font-size: 14.5px; }

  .brand__name { font-size: 15px; letter-spacing: 0.06em; }
  .brand__sub { font-size: 9.5px; letter-spacing: 0.1em; }

  .cmdrail { gap: 12px; font-size: 10px; }
  .cmdrail__coords { display: none; }

  .section__desc { margin-left: 0; }

  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
  .footer-legal__meta { margin-left: 0; }

  .span-1, .span-2, .span-3, .span-4,
  .span-5, .span-6, .span-7, .span-8,
  .span-9, .span-10, .span-11 { grid-column: span 12; }

  .rail__item { flex-basis: 78vw; }
}

@media (max-width: 560px) {
  .cmd-cta { display: none; }
}

/* ---------- 18. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    transition-delay: 0ms !important;
  }

  [data-reveal] { opacity: 1; transform: none; }

  .site-nav {
    transition: opacity 0.001ms linear, visibility 0.001ms linear;
    transform: none;
  }
}