/* ==========================================================================
   火狐体育官网 · 共享样式 /assets/site.css
   夜间球场灯光 + 数据仪表盘：深炭黑底盘、奶油纸信息面、橙红能量、青绿数据点
   ========================================================================== */

/* ---------- 01 变量 ---------- */
:root {
  --fox: #FF4A17;
  --fox-deep: #B82F0C;
  --ink: #14100E;
  --ink-brown: #1B1310;
  --slate: #2A2E33;
  --paper: #F3E9D9;
  --mint: #38F2B0;
  --amber: #F2B03D;
  --mist: #6E7A85;
  --fog: #E8E2D8;

  --font-head: "PingFang SC", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: system-ui, -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;

  --shell: 1240px;
  --gutter: clamp(18px, 4vw, 44px);
  --gap: clamp(18px, 2.4vw, 32px);
  --section-gap: clamp(72px, 9vw, 132px);
  --line: rgba(110, 122, 133, .26);
  --line-strong: rgba(110, 122, 133, .46);
  --shadow-paper: 8px 8px 0 -1px rgba(243, 233, 217, .12), 0 22px 46px -28px rgba(0, 0, 0, .9);
}

/* ---------- 02 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--ink);
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    radial-gradient(ellipse 62% 44% at 10% -4%, rgba(255, 74, 23, .17), transparent 62%),
    radial-gradient(ellipse 48% 34% at 98% 2%, rgba(56, 242, 176, .08), transparent 60%),
    radial-gradient(ellipse 84% 52% at 50% 104%, rgba(42, 46, 51, .72), transparent 72%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: var(--fog);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, video { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; }

a { color: var(--fox); text-decoration: none; }
a:hover { color: var(--amber); }

:focus-visible {
  outline: 2px solid var(--fox);
  outline-offset: 3px;
  border-radius: 1px;
}

::selection { background: var(--fox); color: var(--paper); }

/* ---------- 03 排版 ---------- */
h1, h2, h3, h4, h5 {
  margin: 0 0 .55em;
  font-family: var(--font-head);
  font-weight: 800;
  font-stretch: condensed;
  line-height: 1.08;
  letter-spacing: -.022em;
  color: var(--paper);
}

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

.t-display {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.04;
  letter-spacing: -.025em;
  color: var(--paper);
  margin: 0 0 .4em;
}

.t-section {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--paper);
  margin: 0 0 .6em;
}

.t-sub {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--paper);
  margin: 0 0 .5em;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--fox);
}

.lede {
  max-width: 40ch;
  font-size: clamp(16px, 1.5vw, 18.5px);
  line-height: 1.72;
  color: rgba(232, 226, 216, .9);
  margin: 0 0 1em;
}

.copy {
  max-width: 38ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(232, 226, 216, .8);
  margin: 0 0 1em;
}

/* ---------- 04 布局工具 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(56px, 7vw, 104px); }

.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: 1fr; }
.grid--split,
.grid--split-alt { grid-template-columns: 1fr; }

@media (min-width: 768px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1000px) {
  .grid--split { grid-template-columns: 38fr 62fr; }
  .grid--split-alt { grid-template-columns: 62fr 38fr; }
}

/* ---------- 05 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: 2px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease, transform .2s ease;
}

.btn--primary { background: var(--fox); color: var(--paper); }
.btn--primary:hover,
.btn--primary:focus-visible { background: var(--fox-deep); color: var(--paper); transform: translateY(-2px); }

.btn--ghost { background: transparent; border-color: var(--line-strong); color: var(--fog); }
.btn--ghost:hover,
.btn--ghost:focus-visible { border-color: var(--fox); color: var(--fox); transform: translateY(-2px); }

.btn--paper { background: var(--paper); color: var(--ink-brown); }
.btn--paper:hover,
.btn--paper:focus-visible { background: var(--amber); color: var(--ink-brown); transform: translateY(-2px); }

.btn--sm { padding: 8px 15px; font-size: 13px; }

/* ---------- 06 面包屑 ---------- */
.breadcrumb { padding-top: clamp(20px, 3vw, 36px); }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--mist);
}

.breadcrumb__list li { display: inline-flex; align-items: center; }
.breadcrumb__list li + li::before { content: "/"; margin-right: 8px; color: var(--line-strong); }
.breadcrumb__list a { color: var(--mist); }
.breadcrumb__list a:hover { color: var(--fox); }
.breadcrumb__list [aria-current="page"] { color: var(--fog); }

/* ---------- 07 纸张卡片 ---------- */
.paper {
  position: relative;
  isolation: isolate;
  padding: clamp(20px, 2.4vw, 32px);
  background: var(--paper);
  color: var(--ink-brown);
  border: 1px solid rgba(27, 19, 16, .2);
  border-radius: 2px;
  box-shadow: var(--shadow-paper);
}

.paper h1, .paper h2, .paper h3, .paper h4, .paper p, .paper li { color: inherit; }

.paper__label {
  display: inline-block;
  margin: 0 0 14px;
  padding: 3px 9px;
  background: var(--ink-brown);
  color: var(--paper);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .14em;
}

.paper .paper__label { color: var(--paper); }

/* ---------- 08 数据条 ---------- */
.bars { display: grid; gap: 14px; }

.bar {
  display: grid;
  grid-template-columns: minmax(60px, auto) 1fr auto;
  align-items: center;
  gap: 12px;
}

.bar__label {
  font-size: 13px;
  color: var(--mist);
  white-space: nowrap;
}

.bar__track {
  position: relative;
  height: 8px;
  background: var(--slate);
  border-radius: 1px;
  overflow: hidden;
}

.bar__fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--fox);
  transition: width .6s ease;
}

.bar__value {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--mint);
  white-space: nowrap;
}

/* ---------- 09 图片容器 ---------- */
.media {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--slate);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .5;
  background-image: radial-gradient(rgba(232, 226, 216, .12) 1px, transparent 1px);
  background-size: 5px 5px;
  mix-blend-mode: overlay;
}

.media--wide { aspect-ratio: 16 / 9; }
.media--std { aspect-ratio: 4 / 3; }
.media--square { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }

.media__scrim {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(20, 16, 14, 0) 42%, rgba(20, 16, 14, .88) 100%);
}

.media__tag {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 3;
  padding: 4px 9px;
  background: var(--fox);
  color: var(--paper);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
}

.media__caption {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 12px;
  z-index: 3;
  margin: 0;
  font-size: 12.5px;
  line-height: 1.55;
  color: rgba(232, 226, 216, .88);
}

/* ---------- 10 页头 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -70px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--fox);
  color: var(--paper);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: top .18s ease;
}

.skip-link:focus,
.skip-link:focus-visible { top: 12px; color: var(--paper); outline-offset: 2px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(20, 16, 14, .93);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.6vw, 26px);
  width: 100%;
  max-width: var(--shell);
  min-height: 64px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.wordmark {
  order: 1;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 0;
  color: var(--paper);
  text-decoration: none;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -.025em;
  white-space: nowrap;
}

.wordmark:hover { color: var(--paper); }

.wordmark__mark {
  width: 13px;
  height: 13px;
  background: var(--fox);
  box-shadow: 0 0 0 3px rgba(255, 74, 23, .16);
  transform: translateY(-1px);
  transition: background-color .2s ease, box-shadow .2s ease;
}

.wordmark:hover .wordmark__mark,
.wordmark:focus-visible .wordmark__mark {
  background: var(--amber);
  box-shadow: 0 0 0 5px rgba(242, 176, 61, .18);
}

.wordmark__text { display: inline-block; }

.status-line {
  order: 3;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--mist);
  white-space: nowrap;
}

.status-line__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(56, 242, 176, .14);
  animation: pulse 2.8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(56, 242, 176, .14); }
  50% { box-shadow: 0 0 0 7px rgba(56, 242, 176, .05); }
}

.nav-toggle {
  order: 4;
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 13px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  color: var(--fog);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease;
}

.nav-toggle:hover { border-color: var(--fox); color: var(--paper); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: var(--fog);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: inherit;
  transition: transform .22s ease, background-color .22s ease;
}

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

.nav-toggle[aria-expanded="true"] { border-color: var(--fox); color: var(--paper); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  background: var(--fox);
  transform: translateY(5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  background: var(--fox);
  transform: translateY(-5px) rotate(-45deg);
}

.nav-toggle__label { display: inline-block; }

.command-bar {
  order: 2;
  flex: 1 1 auto;
  min-width: 0;
}

.command-bar__list {
  display: flex;
  align-items: stretch;
  gap: clamp(0px, .6vw, 10px);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

.command-bar__list::-webkit-scrollbar { display: none; }

.command-bar__link {
  position: relative;
  bottom: -1px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 100%;
  padding: 0 8px;
  border-bottom: 2px solid transparent;
  color: rgba(232, 226, 216, .66);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
  transition: color .2s ease, border-color .2s ease;
}

.command-bar__index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .05em;
  color: var(--mist);
  transition: color .2s ease;
}

.command-bar__link:hover {
  color: var(--paper);
  border-bottom-color: rgba(255, 74, 23, .55);
}

.command-bar__link:hover .command-bar__index { color: var(--fox); }

.command-bar__link[aria-current="page"] {
  color: var(--paper);
  border-bottom-color: var(--fox);
}

.command-bar__link[aria-current="page"] .command-bar__index { color: var(--fox); }

/* ---------- 11 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: var(--section-gap);
  background:
    linear-gradient(180deg, rgba(42, 46, 51, .55) 0%, rgba(20, 16, 14, 0) 44%),
    var(--ink-brown);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background-image: repeating-linear-gradient(90deg, var(--fox) 0 26px, transparent 26px 44px);
  opacity: .85;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 3.4vw, 48px);
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(48px, 6vw, 86px) var(--gutter) clamp(36px, 4vw, 58px);
}

@media (min-width: 720px) {
  .site-footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1040px) {
  .site-footer__inner { grid-template-columns: 1.5fr 1fr 1fr 1.4fr; }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 36ch;
}

.footer-brand__lockup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -.025em;
  color: var(--paper);
}

.footer-brand__mark {
  width: 12px;
  height: 12px;
  background: var(--fox);
}

.footer-brand__name { display: inline-block; }

.footer-brand__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.footer-brand__stat {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--mint);
}

.footer-col { min-width: 0; }

.footer-col__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

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

.footer-list a {
  color: rgba(232, 226, 216, .82);
  font-size: 14.5px;
  line-height: 1.5;
  transition: color .2s ease;
}

.footer-list a:hover { color: var(--fox); }

.footer-list--contact { gap: 14px; }

.footer-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.footer-line__key {
  min-width: 30px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
}

.footer-line__value {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--fog);
  word-break: break-word;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  margin-left: 2px;
  padding: 2px 9px;
  background: rgba(255, 74, 23, .1);
  border: 1px solid rgba(255, 74, 23, .34);
  border-radius: 2px;
  color: var(--fox);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease;
}

.copy-btn:hover,
.copy-btn:focus-visible {
  background: var(--fox);
  border-color: var(--fox);
  color: var(--paper);
}

.copy-btn[data-copied="true"] {
  background: var(--mint);
  border-color: var(--mint);
  color: var(--ink-brown);
}

.footer-note {
  margin: 18px 0 0;
  max-width: 34ch;
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--mist);
}

.footer-base {
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, .28);
}

.footer-base__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 18px var(--gutter);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--mist);
}

.footer-base__copy { margin: 0; }
.footer-base__icp { margin: 0; color: rgba(232, 226, 216, .62); }

/* ---------- 12 长文定位 ---------- */
.toc {
  display: none;
  position: sticky;
  top: 92px;
  align-self: start;
}

@media (min-width: 1100px) { .toc { display: block; } }

.toc__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.toc__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-left: 1px solid var(--line);
}

.toc__link {
  display: block;
  margin-left: -1px;
  padding: 7px 0 7px 16px;
  border-left: 2px solid transparent;
  color: var(--mist);
  font-size: 13px;
  line-height: 1.45;
  transition: color .2s ease, border-color .2s ease;
}

.toc__link:hover { color: var(--fog); }

.toc__link[aria-current="true"] {
  color: var(--paper);
  border-left-color: var(--fox);
}

.toc__link[aria-current="true"] .toc__num { color: var(--fox); }

.toc__num {
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

.totop {
  position: fixed;
  right: clamp(14px, 3vw, 30px);
  bottom: clamp(14px, 3vw, 30px);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  padding: 10px 15px;
  background: var(--ink-brown);
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  color: var(--fog);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity .22s ease, transform .22s ease, background-color .18s ease, border-color .18s ease, color .18s ease;
}

.totop[data-visible="true"] {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.totop:hover,
.totop:focus-visible {
  background: var(--fox);
  border-color: var(--fox);
  color: var(--paper);
}

.scroll-rail {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  height: 2px;
  pointer-events: none;
  background: rgba(243, 233, 217, .07);
}

.scroll-rail__fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--fox), var(--amber));
}

/* ---------- 13 滚动入场 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .5s ease, transform .5s ease;
}

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

/* ---------- 14 移动端页头 ---------- */
@media (max-width: 999px) {
  .site-header__inner {
    flex-wrap: wrap;
    align-items: center;
    min-height: 0;
    padding-top: 10px;
    padding-bottom: 10px;
    column-gap: 12px;
    row-gap: 8px;
  }

  .wordmark { order: 1; }
  .nav-toggle { order: 2; display: inline-flex; margin-left: auto; }
  .status-line { order: 3; width: 100%; font-size: 11px; letter-spacing: .01em; }

  .command-bar {
    order: 4;
    flex: 0 0 100%;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height .26s ease;
  }

  .site-header[data-open] .command-bar {
    max-height: min(72vh, 540px);
    overflow-y: auto;
  }

  .command-bar__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    height: auto;
    overflow: visible;
  }

  .command-bar__link {
    bottom: 0;
    height: auto;
    padding: 14px 6px 14px 6px;
    font-size: 16px;
    border-bottom: 1px solid var(--line);
    border-left: 2px solid transparent;
  }

  .command-bar__link[aria-current="page"] {
    padding-left: 14px;
    border-bottom-color: var(--line);
    border-left-color: var(--fox);
    color: var(--paper);
  }

  .command-bar__list li:last-child .command-bar__link { border-bottom: 0; }
}

/* ---------- 15 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

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