/* ============================================================
   利升体育 · /assets/site.css
   共享外壳：命令栏 / 档案索引侧栏 / 页脚 / 通用组件
   ============================================================ */

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

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

body,
h1, h2, h3, h4, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
}

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

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

/* ---------- 2. 变量 ---------- */
:root {
  --bg: #0A1220;
  --panel: #111D33;
  --panel-lift: #14213A;
  --paper: #F3F6FB;
  --silver: #C6D2E2;
  --grey: #8795AC;
  --signal: #FF7A33;
  --cyan: #38E1C6;
  --violet: #7B6BFF;
  --line: #22304A;
  --line-hi: #38496B;
  --veil: #050B16;
  --ink: #101A2C;
  --ink-soft: #445471;

  --bar-h: 56px;
  --rail-w: 240px;
  --radius: 2px;
  --ease: cubic-bezier(.2, .7, .3, 1);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "JetBrains Mono", "Roboto Mono", Menlo, Consolas, "Courier New", monospace;
}

/* ---------- 3. 中文排版基座 ---------- */
body {
  padding-top: var(--bar-h);
  background: var(--bg);
  color: var(--silver);
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  color: var(--paper);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.02em;
}

h1 { font-size: clamp(26px, 5.2vw, 64px); letter-spacing: -.03em; }
h2 { font-size: clamp(20px, 2.8vw, 32px); }
h3 { font-size: clamp(17px, 1.7vw, 22px); }
h4 { font-size: 16px; font-weight: 700; letter-spacing: 0; }

p { text-wrap: pretty; }

a {
  color: inherit;
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

a:hover { color: var(--paper); }

strong { color: var(--paper); font-weight: 700; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--grey);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--signal);
}

#main-content { scroll-margin-top: calc(var(--bar-h) + 14px); }

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

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 14px;
  background: var(--signal);
  color: #1B0C02;
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius);
  transform: translateY(-180%);
  transition: transform .18s var(--ease);
}

.skip-link:focus {
  transform: none;
  color: #1B0C02;
}

/* ---------- 4. 命令栏 ---------- */
.cmdbar {
  --scroll-progress: 0;
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  height: var(--bar-h);
  background: rgba(10, 18, 32, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.cmdbar[data-stuck] {
  border-bottom-color: var(--line-hi);
  background: rgba(8, 15, 28, .97);
}

.cmdbar::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: calc(var(--scroll-progress) * 100%);
  background: var(--signal);
  transition: width .12s linear;
}

.cmdbar__grid {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 100%;
  padding: 0 16px;
}

.cmdbar__brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: none;
}

.cmdbar__brand-mark {
  width: 10px;
  height: 10px;
  background: var(--signal);
  box-shadow: 0 0 0 3px rgba(255, 122, 51, .16);
}

.cmdbar__brand-text {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--paper);
}

.cmdbar__brand:hover .cmdbar__brand-text { color: var(--signal); }

.cmdbar__now {
  display: none;
  align-items: center;
  gap: 8px;
  min-width: 0;
  padding-left: 14px;
  border-left: 1px solid var(--line);
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .08em;
  color: var(--grey);
}

.cmdbar__now-dot {
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--cyan);
}

.cmdbar__now-label { color: #5F6E88; }

.cmdbar__now-value {
  color: var(--paper);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.status-chip {
  position: relative;
  display: none;
  align-items: center;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(17, 29, 51, .65);
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .04em;
  color: var(--grey);
  cursor: default;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.status-chip:hover,
.status-chip:focus-visible { border-color: var(--line-hi); color: var(--silver); }

.status-chip__pop {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 95;
  width: 258px;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--line-hi);
  border-radius: var(--radius);
  color: var(--silver);
  font: 400 12px/1.7 var(--font-sans);
  letter-spacing: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity .18s var(--ease), transform .18s var(--ease), visibility .18s;
}

.status-chip:hover .status-chip__pop,
.status-chip:focus-within .status-chip__pop,
.status-chip:focus .status-chip__pop {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.cmdbar__cta { display: none; }

.rail-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 11px;
  border: 1px solid var(--line-hi);
  border-radius: var(--radius);
  color: var(--silver);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  transition: border-color .18s var(--ease), color .18s var(--ease), background-color .18s var(--ease);
}

.rail-toggle:hover {
  border-color: var(--signal);
  color: var(--paper);
  background: rgba(255, 122, 51, .08);
}

.rail-toggle__bars {
  position: relative;
  display: block;
  width: 14px;
  height: 8px;
}

.rail-toggle__bars::before,
.rail-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: currentColor;
}

.rail-toggle__bars::before { top: 0; }
.rail-toggle__bars::after { bottom: 0; }

.rail-toggle__text { line-height: 1; }

/* ---------- 5. 档案索引侧栏 ---------- */
.rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 70;
  width: min(88vw, 320px);
  padding: calc(var(--bar-h) + 18px) 0 40px;
  background: var(--panel);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateX(-100%);
  transition: transform .2s var(--ease);
}

.rail[data-open] { transform: none; }

.rail-scrim {
  position: fixed;
  inset: 0;
  z-index: 65;
  background: rgba(5, 11, 22, .74);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s var(--ease);
}

.rail-scrim[data-open] {
  opacity: 1;
  pointer-events: auto;
}

.rail__head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 20px 14px;
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--grey);
}

.rail__head-mark {
  width: 6px;
  height: 6px;
  background: var(--signal);
}

.rail__list { padding: 0 10px; }

.rail__item { border-bottom: 1px solid rgba(34, 48, 74, .7); }

.rail__row {
  display: flex;
  align-items: stretch;
}

.rail__link {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 10px;
  border-left: 2px solid transparent;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--silver);
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.rail__link:hover {
  color: var(--paper);
  background: rgba(198, 210, 226, .05);
}

.rail__link[aria-current="page"] {
  color: var(--paper);
  border-left-color: var(--signal);
  background: rgba(255, 122, 51, .07);
}

.rail__idx {
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .04em;
  color: var(--grey);
}

.rail__link[aria-current="page"] .rail__idx { color: var(--signal); }

.rail__label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rail__fold {
  flex: none;
  width: 38px;
  display: grid;
  place-items: center;
  color: var(--grey);
  cursor: pointer;
  transition: color .18s var(--ease);
}

.rail__fold:hover { color: var(--signal); }

.rail__fold-line {
  width: 8px;
  height: 8px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform .18s var(--ease);
}

.rail__fold[aria-expanded="true"] .rail__fold-line {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.rail__panel { padding: 0 16px 14px 24px; }

.rail__note {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  font: 500 11px/1.8 var(--font-mono);
  color: var(--grey);
}

.rail__foot {
  margin: 18px 20px 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font: 500 10px/1.6 var(--font-mono);
  letter-spacing: .1em;
  color: #5C6A82;
}

/* ---------- 6. 页脚 ---------- */
.sitefoot {
  margin-top: clamp(48px, 8vw, 96px);
  padding: 34px 16px 26px;
  background: var(--bg);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--grey);
}

.sitefoot__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.sitefoot__mark {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--paper);
}

.sitefoot__tag {
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--signal);
}

.sitefoot__meta {
  margin-top: 8px;
  font-size: 11px;
  line-height: 1.8;
  letter-spacing: .02em;
  color: #6D7C95;
}

.sitefoot__title {
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  color: #5F6E88;
}

.sitefoot__links { display: flex; flex-direction: column; gap: 7px; }

.sitefoot__links a {
  display: inline-block;
  color: var(--silver);
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}

.sitefoot__links a:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.sitefoot__links--legal { flex-direction: row; flex-wrap: wrap; gap: 16px; }

.sitefoot__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: .06em;
}

.sitefoot__legal { color: #5F6E88; }

.sitefoot__copy {
  margin-left: auto;
  color: #5F6E88;
}

/* ---------- 7. 通用内容组件 ---------- */
.prose {
  max-width: 44rem;
  color: var(--silver);
}

.prose p { margin-bottom: 1.15em; }
.prose p:last-child { margin-bottom: 0; }

.prose--paper {
  padding: clamp(20px, 4vw, 46px);
  background: var(--paper);
  color: var(--ink-soft);
  border-radius: var(--radius);
}

.prose--paper h2,
.prose--paper h3,
.prose--paper h4 { color: var(--ink); }

.prose--paper strong { color: var(--ink); }

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font: 500 11px/1.7 var(--font-mono);
  letter-spacing: .1em;
  color: var(--grey);
}

.crumbs a {
  color: var(--grey);
  border-bottom: 1px solid transparent;
}

.crumbs a:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.crumbs__sep { color: var(--line-hi); }

.crumbs__item { color: var(--silver); }

.grid12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

.grid12 > * { grid-column: span 12; }

.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-12 { grid-column: span 12; }

.sect-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: clamp(18px, 3vw, 30px);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.sect-head__idx {
  font: 500 12px/1 var(--font-mono);
  letter-spacing: .1em;
  color: var(--signal);
}

.sect-head__title { font-size: clamp(20px, 2.6vw, 30px); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 16px;
  border: 1px solid var(--line-hi);
  border-radius: var(--radius);
  background: transparent;
  color: var(--silver);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  line-height: 1;
  cursor: pointer;
  transition: background-color .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
}

.btn:hover {
  background: rgba(198, 210, 226, .07);
  border-color: #4A5F85;
  color: var(--paper);
  transform: translateY(-1px);
}

.btn--signal {
  background: var(--signal);
  border-color: var(--signal);
  color: #1B0C02;
}

.btn--signal:hover {
  background: #FF9059;
  border-color: #FF9059;
  color: #1B0C02;
}

.btn--ghost {
  border-color: var(--line);
  color: var(--grey);
}

.btn--ghost:hover {
  border-color: var(--line-hi);
  color: var(--paper);
  background: transparent;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat__num {
  font-family: var(--font-mono);
  font-size: clamp(32px, 7vw, 96px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
}

.stat__num--signal { color: var(--signal); }

.stat__label {
  font: 500 12px/1.5 var(--font-mono);
  letter-spacing: .08em;
  color: var(--grey);
}

.dossier {
  padding: 18px 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--line-hi);
  border-radius: var(--radius);
  transition: border-color .18s var(--ease), border-left-color .18s var(--ease), background-color .18s var(--ease), transform .18s var(--ease);
}

.dossier:hover {
  background: var(--panel-lift);
  border-color: var(--line-hi);
  border-left-color: var(--signal);
  transform: translateY(-2px);
}

.dossier__title {
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: -.01em;
}

.dossier__meta {
  font: 500 11px/1.7 var(--font-mono);
  letter-spacing: .04em;
  color: var(--grey);
}

.tag {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .06em;
  white-space: nowrap;
  color: var(--grey);
}

.tag--signal {
  color: var(--signal);
  border-color: rgba(255, 122, 51, .45);
}

.tag--cyan {
  color: var(--cyan);
  border-color: rgba(56, 225, 198, .4);
}

.tag--violet {
  color: #ADA5FF;
  border-color: rgba(123, 107, 255, .45);
}

.frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, #162442 0%, #0E1930 55%, #0A1220 100%);
}

.frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(56, 225, 198, .1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 225, 198, .1) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: .5;
}

.frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.72) contrast(1.05) brightness(.92);
}

.frame--16x9 { aspect-ratio: 16 / 9; }
.frame--4x3 { aspect-ratio: 4 / 3; }
.frame--3x2 { aspect-ratio: 3 / 2; }
.frame--1x1 { aspect-ratio: 1 / 1; }

/* ---------- 8. 断点：平板 ---------- */
@media (min-width: 620px) {
  .cmdbar__grid { padding: 0 20px; }
  .cmdbar__cta { display: inline-flex; }
  .status-chip { display: inline-flex; }
  .sitefoot { padding: 40px 20px 28px; }
  .sitefoot__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 24px; }
  .sitefoot__brand { grid-column: span 2; }
}

@media (min-width: 720px) {
  .cmdbar__now { display: flex; }
}

/* ---------- 9. 断点：桌面侧栏常驻 ---------- */
@media (min-width: 1080px) {
  body {
    font-size: 18px;
    padding-left: var(--rail-w);
    transition: padding-left .2s var(--ease);
  }

  html[data-rail="collapsed"] body { padding-left: 0; }

  .cmdbar__grid {
    padding-left: calc(var(--rail-w) + 28px);
    padding-right: 28px;
  }

  html[data-rail="collapsed"] .cmdbar__grid { padding-left: 28px; }

  .rail {
    width: var(--rail-w);
    transform: none;
  }

  html[data-rail="collapsed"] .rail { transform: translateX(-100%); }

  .rail-scrim { display: none; }

  .sitefoot {
    padding: 44px 28px 30px;
  }

  .sitefoot__grid {
    grid-template-columns: 1.2fr 1fr 1fr 1.7fr;
    gap: 32px;
  }

  .sitefoot__brand { grid-column: auto; }

  .sitefoot__base { gap: 24px; }
}

@media (min-width: 1320px) {
  .cmdbar__grid { padding-left: calc(var(--rail-w) + 40px); padding-right: 40px; }
  html[data-rail="collapsed"] .cmdbar__grid { padding-left: 40px; }
  .sitefoot { padding-left: 40px; padding-right: 40px; }
}

/* ---------- 10. 窄屏修正 ---------- */
@media (max-width: 900px) {
  .span-3, .span-4, .span-5, .span-6, .span-7, .span-8 { grid-column: span 12; }
}

@media (max-width: 380px) {
  .cmdbar__brand-text { font-size: 14px; letter-spacing: .04em; }
  .rail-toggle__text { display: none; }
}

/* ---------- 11. 动效可及性 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  .cmdbar::after { transition: none; }
}