/* =========================================================
   风动体育 /assets/site.css — 共享外壳与通用组件
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root {
  --fdb: #0A4C8C;
  --fdb-deep: #062F57;
  --cyan: #00E0D0;
  --cyan-deep: #00857C;
  --orange: #FF6B35;
  --ink: #0B0E14;
  --slate: #1A2230;
  --mist: #F5F8FB;
  --haze: #EAF1F7;
  --grid: #C9D6E2;
  --green: #3DD68C;
  --amber: #FFC24B;

  --text: #0B0E14;
  --text-soft: #4A5A6E;
  --text-dim: #5A6B7F;
  --odd: #B4650F;
  --on-dark: #EAF1F7;
  --on-dark-soft: rgba(234, 241, 247, 0.74);
  --on-dark-dim: rgba(234, 241, 247, 0.48);

  --hair: rgba(201, 214, 226, 0.9);
  --rail-w: 240px;
  --shell-x: clamp(20px, 4vw, 64px);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

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

/* ---------- 2. reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}
body {
  min-height: 100vh;
  background: var(--mist);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video, canvas { display: block; max-width: 100%; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }
:target { scroll-margin-top: 84px; }

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

/* ---------- 3. 中文排版 ---------- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-sans);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--fdb-deep);
}
h1 { font-size: clamp(28px, 3.4vw, 56px); }
h2 { font-size: clamp(22px, 2.4vw, 40px); }
h3 { font-size: clamp(19px, 1.7vw, 28px); }
h4 { font-size: 20px; font-weight: 700; }
h5 { font-size: 17px; font-weight: 700; }
p { max-width: 46em; }
strong, b { font-weight: 700; }
code, kbd, samp, .mono { font-family: var(--font-mono); }

.prose { color: var(--text); }
.prose > * + * { margin-top: 1.2em; }
.prose p { font-size: 16.5px; line-height: 1.75; }
.prose a {
  color: var(--cyan-deep);
  border-bottom: 1px solid rgba(0, 133, 124, 0.35);
  transition: border-color 180ms var(--ease);
}
.prose a:hover { border-bottom-color: var(--cyan-deep); }
.prose strong { color: var(--fdb-deep); }
.prose ul, .prose ol { display: grid; gap: 0.6em; padding-left: 1.2em; }
.prose ul { list-style: square; }
.prose ol { list-style: decimal; }
.prose blockquote {
  border-left: 2px solid var(--cyan-deep);
  padding-left: 16px;
  color: var(--text-soft);
}

/* ---------- 4. 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transform: translateY(-180%);
  transition: transform 180ms var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 5. 头部外壳 ---------- */
.site-header { position: relative; z-index: 90; }

/* 移动端顶部条 */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 58px;
  padding: 0 18px;
  background: var(--ink);
  border-bottom: 1px solid rgba(0, 224, 208, 0.22);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.brand__mark {
  display: grid;
  place-items: center;
  flex: none;
  width: 36px;
  height: 36px;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand__name {
  color: #fff;
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -0.02em;
}
.brand__en {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--on-dark-dim);
}
.brand__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  opacity: 0.9;
}
.brand--topbar .brand__name { font-size: 16px; }

/* 抽屉按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid rgba(0, 224, 208, 0.45);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}
.nav-toggle:hover { background: rgba(0, 224, 208, 0.12); }
.nav-toggle__lines { position: relative; width: 16px; height: 10px; flex: none; }
.nav-toggle__lines::before,
.nav-toggle__lines::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1px;
  background: currentColor;
  transition: transform 200ms var(--ease), top 200ms var(--ease);
}
.nav-toggle__lines::before { top: 1px; }
.nav-toggle__lines::after { top: 8px; }
.nav-toggle[aria-expanded="true"] { background: rgba(0, 224, 208, 0.16); }
.nav-toggle[aria-expanded="true"] .nav-toggle__lines::before { top: 5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__lines::after { top: 5px; transform: rotate(-45deg); }

/* 侧边轨道 */
.rail {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 130;
  display: flex;
  flex-direction: column;
  width: var(--rail-w);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: linear-gradient(180deg, #0A4C8C 0%, #08396A 58%, #062F57 100%);
  color: var(--on-dark);
  border-right: 1px solid rgba(0, 224, 208, 0.2);
  background-image:
    repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 4px),
    linear-gradient(180deg, #0A4C8C 0%, #08396A 58%, #062F57 100%);
  background-blend-mode: overlay, normal;
}
.rail__top {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 20px;
  border-bottom: 1px solid rgba(0, 224, 208, 0.18);
}
.rail__nav {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 20px 0 16px;
}
.rail-group { padding: 0 20px; }
.rail-group__name {
  padding-bottom: 8px;
  margin-bottom: 10px;
  border-bottom: 1px solid rgba(201, 214, 226, 0.18);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--on-dark-dim);
}
.rail-list { display: flex; flex-direction: column; }
.rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  border-bottom: 1px solid rgba(201, 214, 226, 0.1);
  font-size: 15px;
  color: var(--on-dark-soft);
  transition: color 180ms var(--ease), background-color 180ms var(--ease), border-color 180ms var(--ease);
}
.rail-link__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: rgba(0, 224, 208, 0.72);
}
.rail-link__label { min-width: 0; }
.rail-link:hover {
  color: #fff;
  background: rgba(0, 224, 208, 0.08);
  border-left-color: var(--cyan);
}
.rail-link[aria-current="page"] {
  color: #fff;
  font-weight: 700;
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(0, 224, 208, 0.2), rgba(0, 224, 208, 0));
}
.rail-link[aria-current="page"] .rail-link__no { color: var(--cyan); }

.rail__foot {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px 20px 22px;
  border-top: 1px solid rgba(0, 224, 208, 0.18);
}
.rail-tools { display: flex; flex-wrap: wrap; gap: 6px; }
.tool {
  flex: 1 1 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 8px;
  border: 1px solid rgba(201, 214, 226, 0.26);
  color: var(--on-dark-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  transition: color 180ms var(--ease), background-color 180ms var(--ease), border-color 180ms var(--ease);
}
.tool:hover { color: var(--ink); background: var(--cyan); border-color: var(--cyan); }

/* 遮罩 */
.rail-scrim {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: rgba(11, 14, 20, 0.68);
  opacity: 0;
  visibility: hidden;
  transition: opacity 320ms var(--ease), visibility 320ms var(--ease);
}
.rail-scrim[data-open] { opacity: 1; visibility: visible; }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-align: center;
  transition: color 180ms var(--ease), background-color 180ms var(--ease), border-color 180ms var(--ease);
}
.btn--rail {
  width: 100%;
  padding: 11px 10px;
  background: transparent;
  border-color: var(--cyan);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.btn--rail:hover { background: var(--cyan); color: var(--ink); }
.btn--primary { background: var(--fdb); color: #fff; }
.btn--primary:hover { background: var(--cyan); color: var(--ink); }
.btn--ghost { border-color: var(--grid); color: var(--fdb-deep); background: transparent; }
.btn--ghost:hover { border-color: var(--cyan-deep); color: var(--cyan-deep); }

/* ---------- 7. 布局骨架 ---------- */
#main-content { display: block; }

.container {
  width: 100%;
  max-width: 1320px;
  padding-left: var(--shell-x);
  padding-right: var(--shell-x);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: 1 / -1; }

/* ---------- 8. 模块头 ---------- */
.section-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 14px;
  padding-bottom: 12px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--grid);
}
.section-head__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan-deep);
}
.section-head__title {
  font-size: clamp(19px, 1.7vw, 26px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--fdb-deep);
}
.section-head__status {
  margin-left: auto;
  padding: 3px 8px;
  border: 1px solid var(--cyan-deep);
  border-radius: 2px;
  color: var(--cyan-deep);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
}
.section-head--dark { border-bottom-color: rgba(201, 214, 226, 0.22); }
.section-head--dark .section-head__title { color: #fff; }
.section-head--dark .section-head__no,
.section-head--dark .section-head__status { color: var(--cyan); border-color: var(--cyan); }

/* ---------- 9. 面板 / 状态 / 指标 ---------- */
.panel {
  position: relative;
  background: #fff;
  border: 1px solid var(--grid);
  border-top: 2px solid var(--fdb);
  padding: 20px;
  transition: border-top-color 180ms var(--ease);
}
.panel:hover { border-top-color: var(--cyan); }
.panel--cyan { border-top-color: var(--cyan); }
.panel--orange { border-top-color: var(--orange); }

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.tag--live { color: var(--orange); background: rgba(255, 107, 53, 0.1); }
.tag--ok { color: var(--cyan-deep); background: rgba(0, 224, 208, 0.1); }
.tag--warn { color: var(--odd); background: rgba(255, 194, 75, 0.18); }

.metric { display: flex; flex-direction: column; gap: 4px; }
.metric__value {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--fdb-deep);
}
.metric__label {
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text-dim);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}
.breadcrumb a { color: var(--cyan-deep); }
.breadcrumb a:hover { border-bottom: 1px solid var(--cyan-deep); }
.breadcrumb__sep { color: var(--grid); }
.breadcrumb [aria-current="page"] { color: var(--text-dim); }

/* ---------- 11. 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: var(--haze);
  border: 1px solid var(--grid);
}
.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  padding: 6px 10px;
  background: rgba(11, 14, 20, 0.74);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--21x9 { aspect-ratio: 21 / 9; }

/* ---------- 12. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  background: var(--ink);
  color: var(--on-dark-soft);
  border-top: 1px solid rgba(0, 224, 208, 0.24);
}
.skyline {
  position: relative;
  height: clamp(60px, 8vw, 92px);
  overflow: hidden;
  color: #131C28;
}
.skyline__svg { width: 100%; height: 100%; }
.skyline::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(10, 76, 140, 0), rgba(0, 224, 208, 0.4) 46%, rgba(10, 76, 140, 0));
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: 32px 24px;
  padding: 42px var(--shell-x) 34px;
}
.footer__col { min-width: 0; }
.footer__brand-name {
  color: #fff;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.02em;
}
.footer__brand-en {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}
.footer__tagline {
  margin-top: 14px;
  max-width: 26em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--on-dark-soft);
}
.footer__col-title {
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid rgba(201, 214, 226, 0.18);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--on-dark-dim);
}
.footer__list { display: flex; flex-direction: column; gap: 9px; font-size: 14px; }
.footer__list a {
  color: var(--on-dark-soft);
  transition: color 180ms var(--ease);
}
.footer__list a:hover { color: var(--cyan); }
.footer__list--contact li {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}
.footer__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--on-dark-dim);
}
.footer__value {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--on-dark);
  word-break: break-word;
}
.footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
  padding: 18px var(--shell-x) 30px;
  border-top: 1px solid rgba(201, 214, 226, 0.14);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--on-dark-dim);
}
.footer__copy { max-width: none; }
.footer__icp { color: var(--on-dark-soft); }
.footer__legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-left: auto;
}
.footer__legal-links a {
  color: var(--on-dark-soft);
  border-bottom: 1px solid rgba(0, 224, 208, 0.4);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}
.footer__legal-links a:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

/* ---------- 13. 进度条 / 返回顶部 / 显现 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 200;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--fdb), var(--cyan));
  pointer-events: none;
}
.to-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 150;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  background: var(--ink);
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 180ms var(--ease), transform 180ms var(--ease), visibility 180ms var(--ease), background-color 180ms var(--ease), color 180ms var(--ease);
}
.to-top[data-visible] { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--cyan); color: var(--ink); }

.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 320ms var(--ease), transform 320ms var(--ease);
}
.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1023px) {
  body { padding-top: 58px; }
  .rail {
    width: min(300px, 86vw);
    transform: translateX(-101%);
    transition: transform 320ms var(--ease);
  }
  .rail[data-open] { transform: translateX(0); }
  .to-top { bottom: 74px; right: 16px; }
}

@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
  .topbar { display: none; }
  .rail-scrim { display: none; }
  .scroll-progress { left: var(--rail-w); }
  .nav-toggle { display: none; }
}

@media (min-width: 1024px) and (max-width: 1279px) {
  :root { --rail-w: 88px; }
  .rail__top { align-items: center; gap: 0; padding: 20px 0; }
  .brand { justify-content: center; gap: 0; }
  .brand__text, .brand__meta { display: none; }
  .rail__nav { gap: 14px; padding: 14px 0; }
  .rail-group { padding: 0 10px; }
  .rail-group__name {
    font-size: 9px;
    letter-spacing: 0.04em;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
  }
  .rail-link {
    justify-content: center;
    padding: 10px 4px;
    border-left: 0;
    border-bottom: 1px solid rgba(201, 214, 226, 0.1);
  }
  .rail-link__label { display: none; }
  .rail-link__no { font-size: 12px; }
  .rail__foot { padding: 12px 10px 18px; gap: 10px; }
  .rail-tools { flex-direction: column; }
  .tool { flex: none; width: 100%; padding: 6px 0; font-size: 10px; }
  .btn--rail { padding: 9px 4px; font-size: 10.5px; line-height: 1.35; letter-spacing: 0; }
}

@media (max-width: 900px) {
  .col-4, .col-5, .col-6, .col-7, .col-8 { grid-column: 1 / -1; }
  .grid-12 { gap: 18px; }
  .footer__inner { grid-template-columns: 1fr 1fr; gap: 26px 20px; }
}

@media (max-width: 620px) {
  .footer__inner { grid-template-columns: 1fr; padding-top: 34px; }
  .footer__legal-links { margin-left: 0; width: 100%; }
  .footer__list--contact li { grid-template-columns: 1fr; gap: 2px; }
  .section-head__status { margin-left: 0; }
  .panel { padding: 16px; }
}

/* ---------- 15. 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;
    scroll-behavior: auto !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
  .rail, .rail-scrim { transition: none; }
}