/* ============================================================
   完美体育CN · 共享样式 /assets/site.css
   深墨绿指挥室 + 荧光青路径 + 熔岩橙更新标记 + 冷银灰档案
   ============================================================ */

/* ---------- 1. 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, dt, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; background: none; border: 0; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink-950: #071612;
  --ink-900: #0B1F1A;
  --ink-800: #0F2A22;
  --ink-700: #153A2E;
  --line: #1F5140;
  --cyan: #00E6C3;
  --orange: #FF6A2B;
  --silver: #C7D2D8;
  --muted: #8A9AA3;
  --text: #F2F7F5;
  --paper: #E4EDE8;
  --mid: #2E6B57;
  --on-accent: #04231C;

  --font-display: "Archivo Narrow", "Arial Narrow", "Helvetica Neue Condensed", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-data: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --rail-w: 88px;
  --rail-w-open: 288px;
  --bar-h: 64px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 3. Base typography ---------- */
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text);
  background-color: var(--ink-900);
  background-image: linear-gradient(180deg, rgba(0, 230, 195, .06), rgba(0, 230, 195, 0) 360px);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
}
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.01em;
  font-stretch: condensed;
}
h3, h4 { font-weight: 700; }
p { text-wrap: pretty; }

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

/* ---------- 4. Utilities ---------- */
.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;
}
.shell {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 44px);
}
.rule { height: 1px; border: 0; background: var(--line); }
.grid { display: grid; gap: 20px; }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.kicker {
  font-family: var(--font-data);
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}
[data-section] { scroll-margin-top: 24px; }

/* ---------- 5. Section head ---------- */
.section-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px 14px;
  padding-bottom: 12px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.section-head__mark {
  font-family: var(--font-data);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  padding: 5px 8px;
  border: 1px solid var(--line);
  color: var(--muted);
  transition: background-color .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}
[data-section].is-current .section-head__mark {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--on-accent);
}
.section-head__title { font-size: clamp(1.375rem, 3vw, 2rem); }
.section-head__note {
  margin-left: auto;
  font-family: var(--font-data);
  font-size: .8125rem;
  color: var(--muted);
}

/* ---------- 6. Buttons / badges / tags ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  min-height: 44px;
  border: 1px solid transparent;
  font-family: var(--font-data);
  font-size: .875rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-align: center;
  transition: background-color .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}
.btn--primary { background: var(--cyan); border-color: var(--cyan); color: var(--on-accent); }
.btn--primary:hover { background: var(--paper); border-color: var(--paper); }
.btn--ghost { background: transparent; border-color: var(--line); color: var(--cyan); }
.btn--ghost:hover { background: rgba(0, 230, 195, .08); border-color: var(--cyan); }
.btn--block { width: 100%; }

.badge {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: 6px;
  padding: 6px 9px;
  border: 1px solid var(--line);
  background: var(--ink-700);
  font-family: var(--font-data);
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--silver);
}
.badge--update {
  border-color: var(--orange);
  background: rgba(255, 106, 43, .1);
  color: var(--orange);
}

.tag {
  display: inline-block;
  padding: 5px 8px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  font-family: var(--font-data);
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--silver);
}
.tag--accent { background: var(--paper); border-color: var(--paper); color: var(--ink-900); }
.tag--path { border-color: var(--mid); color: var(--cyan); }

/* ---------- 7. Skip link & read progress ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 400;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--on-accent);
  font-family: var(--font-data);
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .08em;
  transform: translateY(-220%);
  transition: transform .16s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

.read-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 300;
  background: rgba(31, 81, 64, .5);
  pointer-events: none;
}
.read-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--cyan) 55%, var(--orange) 100%);
  transition: width .1s linear;
}
@media (min-width: 1024px) {
  .read-progress { left: var(--rail-w); }
}

/* ---------- 8. Header shell ---------- */
.site-header { position: relative; }

.site-header__scrim {
  position: fixed;
  inset: 0;
  z-index: 210;
  background: rgba(4, 15, 12, .74);
  opacity: 0;
  visibility: hidden;
  transition: opacity .26s var(--ease), visibility .26s var(--ease);
}
.site-header[data-open] .site-header__scrim { opacity: 1; visibility: visible; }

.site-header__rail {
  position: fixed;
  top: 0; bottom: 0; left: 0;
  z-index: 220;
  width: min(86vw, 340px);
  display: flex;
  flex-direction: column;
  padding: 18px 0 calc(var(--bar-h) + 28px);
  background: var(--ink-800);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  transform: translateX(-102%);
  transition: transform .26s var(--ease);
}
.site-header[data-open] .site-header__rail { transform: translateX(0); }

@media (min-width: 1024px) {
  .site-header__scrim { display: none; }
  .site-header__rail {
    width: var(--rail-w);
    padding: 20px 0 18px;
    overflow: visible;
    transform: none;
    transition: width .24s var(--ease), box-shadow .24s var(--ease);
  }
  .site-header__rail:hover,
  .site-header__rail:focus-within {
    width: var(--rail-w-open);
    box-shadow: 26px 0 44px -26px rgba(0, 0, 0, .78);
  }
}

/* ---------- 9. Rail brand ---------- */
.rail-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 20px 18px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.rail-brand__stamp {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  writing-mode: vertical-rl;
  text-orientation: upright;
  background: var(--paper);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: .8125rem;
  letter-spacing: .06em;
  line-height: 1;
}
.rail-brand__text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.rail-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.0625rem;
  white-space: nowrap;
}
.rail-brand__tagline {
  font-family: var(--font-data);
  font-size: .6875rem;
  letter-spacing: .04em;
  color: var(--muted);
  white-space: nowrap;
}

/* ---------- 10. Rail search ---------- */
.rail-search {
  position: relative;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}
.rail-search__glyph {
  position: absolute;
  left: 32px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-data);
  font-size: 1rem;
  color: var(--cyan);
  pointer-events: none;
  transition: opacity .16s var(--ease);
}
.rail-search__input {
  width: 100%;
  min-height: 40px;
  padding: 8px 10px 8px 30px;
  background: var(--ink-900);
  border: 1px solid var(--line);
  color: var(--text);
  font-family: var(--font-data);
  font-size: .8125rem;
  letter-spacing: .04em;
  transition: border-color .16s var(--ease), background-color .16s var(--ease);
}
.rail-search__input::placeholder { color: var(--muted); font-size: .75rem; }
.rail-search__input:focus { border-color: var(--cyan); background: var(--ink-950); }
@media (min-width: 1024px) {
  .rail-search { overflow: hidden; }
  .site-header__rail:hover .rail-search,
  .site-header__rail:focus-within .rail-search { overflow: visible; }
  .site-header__rail:hover .rail-search__glyph,
  .site-header__rail:focus-within .rail-search__glyph { opacity: 0; }
}
.rail-search__results {
  position: absolute;
  left: 20px;
  right: 20px;
  top: calc(100% - 6px);
  z-index: 12;
  max-height: min(58vh, 420px);
  overflow-y: auto;
  background: var(--ink-700);
  border: 1px solid var(--mid);
  box-shadow: 8px 8px 0 -2px rgba(0, 0, 0, .38);
}
.rail-search__result a { display: block; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.rail-search__result:last-child a { border-bottom: 0; }
.rail-search__result a:hover { background: var(--ink-800); }
.rail-search__result-label {
  display: block;
  font-family: var(--font-data);
  font-size: .8125rem;
  color: var(--text);
}
.rail-search__result a:hover .rail-search__result-label { color: var(--cyan); }
.rail-search__result-meta {
  display: block;
  font-family: var(--font-data);
  font-size: .6875rem;
  letter-spacing: .08em;
  color: var(--muted);
}
.rail-search__empty {
  padding: 12px;
  font-family: var(--font-data);
  font-size: .75rem;
  color: var(--muted);
}

/* ---------- 11. Rail nav ---------- */
.rail-nav { flex: 1 1 auto; padding-top: 6px; }
.rail-nav__list { display: flex; flex-direction: column; }
.rail-nav__item + .rail-nav__item { border-top: 1px solid var(--line); }
.rail-nav__link {
  position: relative;
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  min-height: 52px;
  overflow: hidden;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: .02em;
  transition: background-color .16s var(--ease), color .16s var(--ease);
}
.rail-nav__link::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 0;
  background: var(--cyan);
  transition: width .16s var(--ease);
}
.rail-nav__link:hover { background: var(--ink-700); color: var(--cyan); }
.rail-nav__link:hover::before { width: 3px; }
.rail-nav__link[aria-current="page"] { background: var(--ink-700); color: var(--cyan); }
.rail-nav__link[aria-current="page"]::before { width: 3px; background: var(--orange); }
.rail-nav__idx {
  font-family: var(--font-data);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--muted);
  transition: color .16s var(--ease);
}
.rail-nav__link:hover .rail-nav__idx,
.rail-nav__link[aria-current="page"] .rail-nav__idx { color: var(--cyan); }
.rail-nav__label { white-space: nowrap; transition: opacity .16s var(--ease); }
@media (min-width: 1024px) {
  .rail-nav { min-height: 0; overflow-y: auto; overflow-x: hidden; }
  .site-header__rail:not(:hover):not(:focus-within) .rail-nav__label,
  .site-header__rail:not(:hover):not(:focus-within) .rail-brand__text,
  .site-header__rail:not(:hover):not(:focus-within) .rail-foot { opacity: 0; }
}

/* ---------- 12. Rail foot ---------- */
.rail-foot {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px 20px 6px;
  border-top: 1px solid var(--line);
  transition: opacity .16s var(--ease);
}
.rail-foot__cta { width: 100%; font-size: .75rem; letter-spacing: .04em; }
.rail-legal { display: flex; flex-wrap: wrap; gap: 4px 14px; padding-top: 4px; }
.rail-legal__link {
  font-family: var(--font-data);
  font-size: .6875rem;
  letter-spacing: .06em;
  color: var(--muted);
  transition: color .16s var(--ease);
}
.rail-legal__link:hover { color: var(--cyan); }

/* ---------- 13. Mobile bar ---------- */
.site-header__bar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 230;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom, 0px));
  background: var(--ink-800);
  border-top: 1px solid var(--line);
}
.bar-brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.0625rem;
  letter-spacing: .02em;
  white-space: nowrap;
}
.bar-brand::after {
  content: "";
  display: block;
  width: 30px;
  height: 2px;
  margin-top: 3px;
  background: var(--orange);
}
.bar-actions { display: flex; align-items: center; gap: 10px; }
.totop {
  min-height: 42px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  color: var(--silver);
  font-family: var(--font-data);
  font-size: .75rem;
  letter-spacing: .08em;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}
.totop:hover { color: var(--cyan); border-color: var(--cyan); }
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 42px;
  padding: 9px 14px;
  background: var(--cyan);
  border: 1px solid var(--cyan);
  color: var(--on-accent);
  font-family: var(--font-data);
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .08em;
  transition: background-color .16s var(--ease), border-color .16s var(--ease);
}
.nav-toggle:hover { background: var(--paper); border-color: var(--paper); }
.nav-toggle__glyph {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 16px;
  height: 12px;
}
.nav-toggle__glyph span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform .16s var(--ease), opacity .16s var(--ease);
}
.site-header[data-open] .nav-toggle__glyph span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__glyph span:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__glyph span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__text { letter-spacing: .1em; }
@media (min-width: 1024px) {
  .site-header__bar { display: none; }
}

/* ---------- 14. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: 64px;
  background: var(--ink-800);
  border-top: 1px solid var(--line);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  width: 128px;
  height: 3px;
  background: var(--cyan);
}
.site-footer__inner {
  display: grid;
  gap: 32px;
  padding-top: 44px;
  padding-bottom: 32px;
}
@media (min-width: 720px) {
  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (min-width: 1024px) {
  .site-footer__inner { grid-template-columns: 1.05fr 1.5fr 1fr; gap: 44px; padding-top: 56px; }
  .footer-brand { grid-column: auto; }
}
.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.375rem;
  letter-spacing: .01em;
}
.footer-brand__line { margin-top: 8px; font-size: .9375rem; line-height: 1.8; color: var(--silver); }
.footer-brand__note {
  margin-top: 10px;
  font-family: var(--font-data);
  font-size: .75rem;
  line-height: 1.85;
  color: var(--muted);
}
.footer-brand .badge { margin-top: 14px; }
.footer-cols { display: grid; gap: 26px; grid-template-columns: repeat(auto-fit, minmax(132px, 1fr)); }
.footer-col__title {
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-data);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.footer-col__list { display: flex; flex-direction: column; gap: 2px; }
.footer-link {
  display: block;
  padding: 6px 0;
  font-size: .9375rem;
  color: var(--silver);
  transition: color .16s var(--ease);
}
.footer-link:hover { color: var(--cyan); }
.footer-link[aria-current="page"] { color: var(--cyan); }
.contact-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 14px;
  font-size: .9375rem;
}
.contact-list dt {
  padding-top: 4px;
  font-family: var(--font-data);
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--muted);
}
.contact-list dd { color: var(--text); word-break: break-word; }
.footer-contact__note { margin-top: 12px; font-size: .8125rem; line-height: 1.85; color: var(--muted); }
.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  padding-top: 16px;
  padding-bottom: 24px;
  border-top: 1px solid var(--line);
  font-family: var(--font-data);
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--muted);
}
.footer-icp { color: var(--silver); }
.footer-meta { color: var(--muted); }
@media (max-width: 1023.98px) {
  .site-footer__base { padding-bottom: calc(var(--bar-h) + 26px); }
}

/* ---------- 15. Content components ---------- */
.prose { max-width: 68ch; font-size: 1.0625rem; line-height: 1.9; }
.prose > * + * { margin-top: 1.35em; }
.prose h2 { font-size: clamp(1.25rem, 2.4vw, 1.75rem); margin-top: 2em; }
.prose h3 { font-size: 1.125rem; margin-top: 1.6em; }

.card {
  position: relative;
  padding: 20px;
  background: var(--ink-700);
  border: 1px solid var(--line);
}
.card__index {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-data);
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--orange);
}
.stack { position: relative; z-index: 0; }
.stack::before {
  content: "";
  position: absolute;
  inset: 10px -10px -10px 10px;
  z-index: -1;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.data-table { font-family: var(--font-data); font-size: .9375rem; }
.data-table th,
.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.data-table thead th {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}
.data-table tbody tr { transition: background-color .16s var(--ease); }
.data-table tbody tr:hover { background: var(--ink-800); }

.timeline { position: relative; padding-left: 22px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 3px; top: 6px; bottom: 6px;
  width: 1px;
  background: var(--line);
}
.timeline__item { position: relative; padding: 10px 0; }
.timeline__item + .timeline__item { border-top: 1px solid var(--line); }
.timeline__marker {
  position: absolute;
  left: -22px; top: 18px;
  width: 7px; height: 7px;
  background: var(--cyan);
}

.log { display: flex; flex-direction: column; }
.log__item {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-data);
  font-size: .8125rem;
  color: var(--silver);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-data);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--muted);
}
.breadcrumb a { transition: color .16s var(--ease); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb__sep { color: var(--mid); }
.breadcrumb [aria-current="page"] { color: var(--cyan); }

/* ---------- 16. Media containers ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid var(--line);
}
.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--square { aspect-ratio: 1 / 1; }
.media--geo {
  background-color: var(--ink-800);
  background-image:
    repeating-linear-gradient(135deg, rgba(0, 230, 195, .1) 0 1px, transparent 1px 14px),
    repeating-linear-gradient(45deg, rgba(255, 106, 43, .08) 0 1px, transparent 1px 26px);
}
.media__caption {
  position: absolute;
  left: 0; bottom: 0;
  max-width: 100%;
  padding: 7px 10px;
  background: rgba(7, 22, 18, .82);
  font-family: var(--font-data);
  font-size: .6875rem;
  letter-spacing: .06em;
  color: var(--silver);
}

/* ---------- 17. Reveal & reduced motion ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .32s var(--ease), transform .32s var(--ease);
}
html.js [data-reveal].is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  html.js [data-reveal] { opacity: 1 !important; transform: none !important; }
  .site-header__rail { transition: none; }
  .read-progress__bar { transition: none; }
}