/* ==========================================================================
   易倍体育网页版 — /assets/site.css
   共享外壳：品牌轨道 / 报头导航 / 页脚 / 基础组件
   ========================================================================== */

/* ---------- 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, li, figure, blockquote,
dl, dd, dl dt { margin: 0; padding: 0; }

ul, ol { list-style: none; }

a { color: inherit; text-decoration: none; }

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

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

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

/* ---------- 2. 设计令牌 ---------- */
:root {
  --ink-deep: #0A1F18;
  --ink-2: #10291F;
  --ink-3: #17362A;
  --signal-cyan: #38F0BE;
  --cyan-dim: #1C8A6E;
  --referee-yellow: #E9C43C;
  --amber-soft: #F7E49A;
  --red-card: #E13B2F;
  --paper: #EDF3EE;
  --muted: #8CA79A;
  --grid: #1E3A2E;

  --rail-w: 72px;
  --shell-max: 1360px;
  --aside-w: 240px;

  --font-display: "Barlow Condensed", "Oswald", "Arial Narrow", Arial, sans-serif;
  --font-head: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Serif SC", "Songti SC", "Source Han Serif SC", "SimSun", Georgia, serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --dur: 200ms;

  --hair-yellow: rgba(233, 196, 60, .26);
  --hair-cyan: rgba(56, 240, 190, .38);
}

/* ---------- 3. 中文排版基线 ---------- */
body {
  background-color: var(--ink-deep);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  font-weight: 400;
  padding-left: var(--rail-w);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: .01em;
  color: var(--paper);
}

h1 { font-size: clamp(30px, 4.4vw, 52px); font-weight: 500; letter-spacing: .005em; }
h2 { font-size: clamp(22px, 2.8vw, 32px); }
h3 { font-size: clamp(17px, 2vw, 20px); font-weight: 500; }
h4 { font-size: 16px; font-weight: 500; }

p { max-width: 68ch; }

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

::selection { background: var(--signal-cyan); color: var(--ink-deep); }

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

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -100px;
  left: calc(var(--rail-w) + 12px);
  z-index: 200;
  display: inline-block;
  padding: 10px 18px;
  background: var(--signal-cyan);
  color: var(--ink-deep);
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .08em;
  transition: top var(--dur) var(--ease);
}

.skip-link:focus {
  top: 12px;
  outline-color: var(--paper);
}

/* ---------- 5. 左侧品牌轨道 ---------- */
.rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 70;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 22px 0 20px;
  background: var(--ink-deep);
  border-right: 1px solid var(--hair-yellow);
}

.rail__sign {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.rail__sign-zh {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .3em;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.rail__sign-en {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--referee-yellow);
}

.rail__sign:hover .rail__sign-zh { color: var(--signal-cyan); }

.rail__track {
  flex: 1 1 auto;
  width: 1px;
  min-height: 36px;
  margin: 20px 0;
  background: var(--hair-yellow);
}

.rail__chapter {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-head);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--muted);
  max-height: 150px;
  overflow: hidden;
  margin-bottom: 16px;
}

.rail__top {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--hair-yellow);
  color: var(--referee-yellow);
  font-size: 14px;
  line-height: 1;
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--dur) var(--ease),
              visibility var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.rail__top[data-visible] { visibility: visible; opacity: 1; }

.rail__top:hover {
  background: var(--signal-cyan);
  border-color: var(--signal-cyan);
  color: var(--ink-deep);
}

/* ---------- 6. 报头 ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 31, 24, .94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hair-yellow);
}

.masthead__inner {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 16px clamp(16px, 3vw, 40px) 12px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto;
  grid-template-areas: "meta brand actions toggle";
  align-items: center;
  gap: 16px;
  transition: padding var(--dur) var(--ease);
}

.masthead[data-stuck] .masthead__inner { padding-top: 10px; padding-bottom: 8px; }

.masthead__meta {
  grid-area: meta;
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.masthead__meta-line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--muted);
  white-space: nowrap;
}

.brand {
  grid-area: brand;
  display: block;
  text-align: center;
}

.brand__name {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(20px, 2.4vw, 27px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: .14em;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.brand:hover .brand__name { color: var(--signal-cyan); }

.brand__sub {
  display: block;
  margin-top: 5px;
  font-family: var(--font-head);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--referee-yellow);
}

.masthead__actions {
  grid-area: actions;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 10px;
}

/* 阅读进度 */
.readbar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(233, 196, 60, .14);
  overflow: hidden;
  pointer-events: none;
}

.readbar__fill {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--signal-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 90ms linear;
}

/* ---------- 7. 栏目导航 ---------- */
.navbar {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 44px;
  border-top: 1px solid rgba(233, 196, 60, .16);
}

.navbar__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(8px, 1.5vw, 30px);
  padding: 0 clamp(16px, 3vw, 40px);
}

.navbar__list a {
  position: relative;
  display: inline-block;
  padding: 12px 2px;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}

.navbar__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 6px;
  height: 1px;
  background: var(--signal-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.navbar__list a:hover { color: var(--paper); }
.navbar__list a:hover::after { transform: scaleX(1); }

.navbar__list a[aria-current="page"] { color: var(--signal-cyan); }
.navbar__list a[aria-current="page"]::after { transform: scaleX(1); }

.navbar__filter {
  position: absolute;
  right: clamp(16px, 3vw, 40px);
  top: 50%;
  transform: translateY(-50%);
  display: none;
  align-items: center;
  padding: 4px 12px;
  border: 1px solid var(--hair-cyan);
  font-family: var(--font-head);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--signal-cyan);
  white-space: nowrap;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.masthead[data-stuck] .navbar__filter { display: inline-flex; }
.navbar__filter:hover { background: var(--signal-cyan); color: var(--ink-deep); }

/* ---------- 8. 移动端菜单按钮 ---------- */
.nav-toggle {
  grid-area: toggle;
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 11px;
  border: 1px solid rgba(233, 196, 60, .42);
  color: var(--amber-soft);
  font-family: var(--font-head);
  font-size: 12px;
  letter-spacing: .12em;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.nav-toggle:hover { border-color: var(--signal-cyan); color: var(--signal-cyan); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.nav-toggle.is-open .nav-toggle__bars { background: transparent; }
.nav-toggle.is-open .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle.is-open .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 9. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid transparent;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .08em;
  line-height: 1.2;
  white-space: nowrap;
  transition: background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.btn--signal {
  background: var(--signal-cyan);
  border-color: var(--signal-cyan);
  color: #06150F;
}

.btn--signal:hover { background: #5CF6CD; border-color: #5CF6CD; }

.btn--ghost {
  border-color: rgba(233, 196, 60, .45);
  color: var(--amber-soft);
}

.btn--ghost:hover { border-color: var(--signal-cyan); color: var(--signal-cyan); }

.btn--quiet {
  border-color: var(--grid);
  color: var(--muted);
}

.btn--quiet:hover { border-color: var(--cyan-dim); color: var(--paper); }

/* ---------- 10. 页脚 ---------- */
.site-footer {
  margin-top: 72px;
  background: var(--ink-2);
  border-top: 1px solid var(--hair-yellow);
  padding-top: 56px;
}

.site-footer__inner {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 clamp(16px, 3vw, 40px);
  display: grid;
  grid-template-columns: minmax(220px, 1.5fr) repeat(3, minmax(120px, .8fr));
  gap: clamp(24px, 3vw, 52px);
}

.site-footer__name {
  display: block;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--paper);
}

.site-footer__tagline {
  margin-top: 8px;
  font-family: var(--font-head);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--referee-yellow);
  max-width: none;
}

.site-footer__note {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 34ch;
}

.foot-col__title {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--referee-yellow);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hair-yellow);
}

.foot-col__list { margin-top: 14px; display: grid; gap: 9px; }

.foot-col__list a {
  font-family: var(--font-head);
  font-size: 14px;
  color: var(--muted);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.foot-col__list a:hover { color: var(--signal-cyan); padding-left: 4px; }

.site-footer__base {
  max-width: var(--shell-max);
  margin: 48px auto 0;
  padding: 20px clamp(16px, 3vw, 40px) 30px;
  border-top: 1px solid var(--hair-yellow);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 32px;
}

.site-footer__contact {
  font-size: 13px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 76ch;
}

.site-footer__legal {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted);
  max-width: none;
  white-space: nowrap;
}

/* ---------- 11. 布局工具 ---------- */
.container {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 clamp(16px, 3vw, 40px);
}

.container--narrow { max-width: 860px; }

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

.with-aside {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--aside-w);
  gap: clamp(24px, 3vw, 48px);
  align-items: start;
}

.rule { height: 1px; border: 0; background: var(--hair-yellow); }
.rule--grid { background: var(--grid); }

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

/* ---------- 12. 基础组件 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted);
  margin-bottom: 20px;
}

.breadcrumb a { transition: color var(--dur) var(--ease); }
.breadcrumb a:hover { color: var(--signal-cyan); }
.breadcrumb__sep { color: var(--referee-yellow); opacity: .55; }

.index-label {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
  text-transform: uppercase;
}

.section-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hair-yellow);
  margin-bottom: 24px;
}

.section-head__num {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--referee-yellow);
  font-variant-numeric: tabular-nums;
}

.section-head__title {
  font-family: var(--font-head);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 700;
  color: var(--paper);
}

.section-head__note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--muted);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 0 14px;
  border-top: 1px solid var(--hair-yellow);
}

.stat__value {
  font-family: var(--font-display);
  font-size: clamp(56px, 7vw, 96px);
  font-weight: 700;
  line-height: .9;
  letter-spacing: -.01em;
  color: var(--signal-cyan);
  font-variant-numeric: tabular-nums;
}

.stat__unit {
  font-family: var(--font-head);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--muted);
}

.stat__label {
  font-family: var(--font-head);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
  margin-top: 8px;
}

.panel {
  background: var(--ink-2);
  border: 1px solid var(--hair-yellow);
  padding: 20px 22px;
}

.panel--float {
  background: var(--ink-3);
  border-color: var(--grid);
}

.panel__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--grid);
  font-family: var(--font-head);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--paper);
}

.panel__body { font-size: 14px; line-height: 1.9; color: var(--muted); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 13px;
  border: 1px solid var(--grid);
  background: transparent;
  font-family: var(--font-head);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
  transition: border-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.chip:hover { border-color: var(--cyan-dim); color: var(--paper); }

.chip[aria-pressed="true"],
.chip.is-active {
  border-color: var(--signal-cyan);
  color: var(--ink-deep);
  background: var(--signal-cyan);
}

/* ---------- 13. 图片容器 ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--ink-3);
  border: 1px solid rgba(233, 196, 60, .14);
}

.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--portrait { aspect-ratio: 3 / 4; }

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.88) contrast(1.06) brightness(.86);
}

.media__layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(56, 240, 190, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 240, 190, .12) 1px, transparent 1px);
  background-size: 32px 32px;
  mix-blend-mode: screen;
}

.media__overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 16px 18px;
  background: linear-gradient(180deg, rgba(10, 31, 24, 0) 0%, rgba(10, 31, 24, .9) 76%);
}

.media__tag {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid var(--hair-yellow);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--referee-yellow);
}

/* ---------- 14. 动效 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}

.has-js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1180px) {
  .with-aside { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 900px) {
  body { padding-left: 0; }

  .rail { display: none; }

  .skip-link { left: 12px; }

  .masthead__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand toggle"
      "actions actions";
    row-gap: 10px;
    padding: 12px 16px 10px;
  }

  .masthead__meta { display: none; }

  .brand { text-align: left; }

  .masthead__actions { justify-content: flex-start; }

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

  .navbar {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    justify-content: stretch;
    background: var(--ink-2);
    border-top: 1px solid var(--hair-yellow);
    border-bottom: 1px solid var(--hair-yellow);
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }

  .navbar[data-open] { display: block; }

  .navbar__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0;
  }

  .navbar__list a {
    display: block;
    padding: 14px 20px;
    font-size: 15px;
    border-bottom: 1px solid var(--grid);
  }

  .navbar__list a::after { display: none; }

  .navbar__filter { display: none !important; }

  .masthead[data-stuck] .navbar__filter { display: none; }

  .site-footer__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px 20px;
  }

  .site-footer__brand { grid-column: 1 / -1; }

  .site-footer__base { flex-direction: column; align-items: flex-start; }

  .site-footer__legal { white-space: normal; }
}

@media (max-width: 520px) {
  .site-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .section-head__note { margin-left: 0; }
  .btn { padding: 8px 12px; font-size: 12px; }
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

/* ---------- 16. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

  .readbar__fill { transition: none; }

  .has-js [data-reveal],
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}