/* ============================================================
   亚体育赛场 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ============================================================ */

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

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

body,
h1, h2, h3, h4, h5,
p, figure, blockquote, dl, dd, ul, ol { margin: 0; }

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

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
}

a { color: inherit; }

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

/* ---------- 2. 变量 ---------- */
:root {
  --ink-950: #050D0B;
  --ink-900: #08150F;
  --ink-800: #0E2019;
  --ink-700: #163026;
  --grid-line: #1F4034;
  --cyan-400: #4FF0D0;
  --cyan-200: #A9FFF0;
  --orange-500: #FF9A3C;
  --magenta-500: #E0457B;
  --paper-050: #F2F7F4;
  --gray-400: #82A096;

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

  --header-h: 72px;
  --rail-w: 72px;
  --edge: clamp(20px, 4.5vw, 72px);
  --maxw: 1440px;

  --ease: cubic-bezier(.2, .7, .2, 1);
  --dur: 420ms;

  --line: 1px solid var(--grid-line);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--ink-900);
  color: var(--paper-050);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper-050);
}

h1 { font-size: clamp(34px, 5.4vw, 64px); line-height: 1; }
h2 { font-size: clamp(26px, 3.6vw, 44px); }
h3 { font-size: clamp(19px, 2.2vw, 26px); }
h4 { font-size: 17px; letter-spacing: 0; }

p { text-wrap: pretty; }

strong { font-weight: 700; }

a { text-decoration-thickness: 1px; text-underline-offset: 3px; }

::selection {
  background: var(--cyan-400);
  color: var(--ink-950);
}

:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
  border-radius: 2px;
}

.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;
}

.num,
[data-mono] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -.01em;
}

/* ---------- 4. 布局容器 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--edge);
}

.page-shell {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--edge);
}

main { display: block; padding-top: var(--header-h); }

/* 首屏需要被透明导航覆盖时使用 */
.hero-bleed { margin-top: calc(var(--header-h) * -1); }

.section {
  padding-block: clamp(56px, 8vw, 128px);
  position: relative;
}

.divider-band {
  height: 44px;
  border-top: var(--line);
  border-bottom: var(--line);
  background-image: repeating-linear-gradient(
    90deg,
    var(--grid-line) 0 1px,
    transparent 1px 96px
  );
  background-position: left bottom;
  background-repeat: repeat-x;
}

.blueprint-grid {
  background-image:
    repeating-linear-gradient(90deg, var(--grid-line) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(180deg, var(--grid-line) 0 1px, transparent 1px 96px);
}

/* ---------- 5. 数据脉搏轴 ---------- */
.pulse-rail {
  position: fixed;
  top: var(--header-h);
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 60;
  display: none;
  pointer-events: none;
  border-right: var(--line);
  background:
    linear-gradient(180deg, rgba(5, 13, 11, .92), rgba(8, 21, 15, .55));
  background-image:
    repeating-linear-gradient(180deg, var(--grid-line) 0 1px, transparent 1px 64px);
  background-position: right top;
  background-repeat: repeat-y;
  background-size: 14px 100%;
}

.pulse-rail__progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan-400), var(--cyan-200));
  transform: scaleY(0);
  transform-origin: top center;
}

.pulse-rail__marker {
  position: absolute;
  left: 14px;
  width: 8px;
  height: 8px;
  border: 1px solid var(--grid-line);
  background: var(--ink-950);
  transition: background-color 200ms var(--ease), border-color 200ms var(--ease);
}

.pulse-rail__marker.is-current {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
}

@media (min-width: 1200px) {
  .pulse-rail { display: block; }
  .page-shell { padding-left: calc(var(--rail-w) + var(--edge)); }
  .container { padding-left: calc(var(--rail-w) + var(--edge)); }
}

/* ---------- 6. 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 200;
  padding: 12px 20px;
  background: var(--cyan-400);
  color: var(--ink-950);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 2px;
  transition: top 160ms var(--ease);
}

.skip-link:focus { top: 14px; }

/* ---------- 7. 头部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 240ms var(--ease),
              border-color 240ms var(--ease);
}

.site-header.is-scrolled {
  background: rgba(8, 21, 15, .94);
  border-bottom-color: var(--grid-line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.6vw, 44px);
  width: 100%;
  max-width: var(--maxw);
  min-height: var(--header-h);
  margin-inline: auto;
  padding-inline: var(--edge);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand__link {
  display: flex;
  flex-direction: column;
  gap: 1px;
  text-decoration: none;
  color: var(--paper-050);
}

.brand__mark {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1.1;
}

.brand__line {
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: .06em;
  color: var(--gray-400);
  white-space: nowrap;
}

.brand__version {
  padding: 3px 8px;
  font-size: 11px;
  color: var(--cyan-400);
  border: 1px solid var(--grid-line);
  border-radius: 2px;
  white-space: nowrap;
}

.site-nav { margin-left: auto; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 30px);
}

.site-nav__item { display: block; }

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 2px;
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--paper-050);
  text-decoration: none;
  transition: color 200ms var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 0;
  height: 2px;
  background: var(--cyan-400);
  transition: width 220ms var(--ease);
}

.site-nav__link:hover { color: var(--cyan-200); }

.site-nav__link:hover::after,
.site-nav__link:focus-visible::after,
.site-nav__link[aria-current="page"]::after { width: 24px; }

.site-nav__link[aria-current="page"] { color: var(--cyan-400); }

.site-nav__meta { display: none; }

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid var(--grid-line);
  border-radius: 2px;
  color: var(--paper-050);
  cursor: pointer;
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}

.nav-toggle:hover { border-color: var(--cyan-400); color: var(--cyan-400); }

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 13px;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform 220ms var(--ease), opacity 200ms var(--ease);
}

.nav-toggle__label { font-size: 13px; letter-spacing: .08em; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(5.75px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-5.75px) rotate(-45deg);
}

@media (max-width: 1100px) {
  .brand__line { display: none; }
}

@media (max-width: 960px) {
  :root { --header-h: 64px; }

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

  .site-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    width: min(360px, 88vw);
    height: calc(100vh - var(--header-h));
    height: calc(100dvh - var(--header-h));
    margin-left: 0;
    padding: 24px var(--edge) 40px;
    background: var(--ink-900);
    border-left: var(--line);
    border-top: var(--line);
    overflow-y: auto;
    visibility: hidden;
    transform: translateX(102%);
    transition: transform 260ms var(--ease), visibility 260ms linear;
  }

  .site-nav[data-open] {
    visibility: visible;
    transform: translateX(0);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    display: block;
    padding: 16px 0;
    font-size: 17px;
    border-bottom: var(--line);
  }

  .site-nav__link::after { bottom: 10px; }

  .site-nav__meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: var(--line);
    font-size: 12px;
    color: var(--gray-400);
    word-break: break-all;
  }

  .site-nav__meta-version { color: var(--cyan-400); }
}

@media (max-width: 560px) {
  .brand__version { display: none; }
  .site-header__actions .btn--compact { padding: 8px 12px; font-size: 12px; }
  .nav-toggle__label { display: none; }
}

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 132px);
  background: var(--ink-950);
  border-top: var(--line);
  color: var(--paper-050);
}

.footer-band {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 46px;
  padding-inline: var(--edge);
  border-bottom: var(--line);
}

.footer-band__ticks {
  flex: 1 1 auto;
  height: 10px;
  align-self: flex-end;
  background-image: repeating-linear-gradient(
    90deg,
    var(--grid-line) 0 1px,
    transparent 1px 40px
  );
  background-position: left bottom;
  background-repeat: repeat-x;
}

.footer-band__version {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--cyan-400);
  white-space: nowrap;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 2fr) minmax(0, 1.15fr);
  gap: clamp(28px, 4vw, 64px);
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 76px) var(--edge);
}

.footer-brand__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .02em;
}

.footer-brand__desc {
  margin-top: 10px;
  max-width: 26em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-400);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.footer-links__title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray-400);
}

.footer-links__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.footer-links__link {
  font-size: 15px;
  color: var(--paper-050);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.footer-links__link:hover,
.footer-links__link:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray-400);
}

.footer-contact__item {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper-050);
  word-break: break-all;
}

.footer-contact__item--text {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--gray-400);
  word-break: normal;
}

.footer-service-note {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 18px var(--edge);
  border-top: var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-400);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 16px var(--edge) 28px;
  border-top: var(--line);
  font-size: 12px;
  color: var(--gray-400);
}

.footer-legal__line,
.footer-legal__year { letter-spacing: .04em; }

@media (max-width: 900px) {
  .site-footer__inner { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .footer-links { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 18px; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
}

/* ---------- 9. 通用按钮 ---------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--paper-050);
  --btn-bd: var(--grid-line);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  line-height: 1.2;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-bd);
  border-radius: 2px;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 180ms var(--ease), color 180ms var(--ease),
              border-color 180ms var(--ease), transform 180ms var(--ease);
}

.btn:hover { transform: translateY(-1px); }

.btn--primary {
  --btn-bg: var(--cyan-400);
  --btn-fg: var(--ink-950);
  --btn-bd: var(--cyan-400);
}

.btn--primary:hover {
  --btn-bg: var(--cyan-200);
  --btn-bd: var(--cyan-200);
}

.btn--ghost:hover {
  --btn-fg: var(--cyan-400);
  --btn-bd: var(--cyan-400);
}

.btn--compact { padding: 9px 16px; font-size: 13px; }

/* ---------- 10. 文本组件 ---------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.annotation {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray-400);
}

.annotation--vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: .3em;
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 62ch;
}

.section-head__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--cyan-400);
}

.section-head__title { max-width: 22ch; }

.section-head__note {
  font-size: 15px;
  color: var(--gray-400);
  max-width: 60ch;
}

.data-figure {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.data-figure__value {
  font-family: var(--font-mono);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  line-height: .95;
  letter-spacing: -.02em;
  color: var(--cyan-400);
}

.data-figure__label {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--gray-400);
}

.data-figure--goal .data-figure__value { color: var(--orange-500); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  border: 1px solid var(--grid-line);
  border-radius: 2px;
  color: var(--gray-400);
}

.tag--live { color: var(--cyan-400); border-color: var(--cyan-400); }
.tag--goal { color: var(--orange-500); border-color: var(--orange-500); }
.tag--change { color: var(--magenta-500); border-color: var(--magenta-500); }

/* ---------- 11. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gray-400);
}

.breadcrumbs__item { display: inline-flex; align-items: center; gap: 10px; }

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: var(--grid-line);
}

.breadcrumbs__link {
  color: var(--gray-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.breadcrumbs__link:hover,
.breadcrumbs__link:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

.breadcrumbs__current { color: var(--paper-050); }

/* ---------- 12. 图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  background: var(--ink-800);
  border: var(--line);
}

.media-frame > img,
.media-frame > picture,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: contrast(1.06) saturate(1.04);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 100% at 50% 0%, transparent 38%, rgba(5, 13, 11, .86) 100%);
}

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

.media-frame--scan::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(79, 240, 208, .07) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(180deg, rgba(79, 240, 208, .07) 0 1px, transparent 1px 48px);
}

/* ---------- 13. 滚动显现 ---------- */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  will-change: opacity, transform;
}

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

/* ---------- 14. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

  .js-ready [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .btn:hover { transform: none; }
}