/* ==========================================================================
   完美体育赛事 · /assets/site.css
   共享外壳：重置、令牌、中文排版、头部、页脚、通用组件
   ========================================================================== */

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

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

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

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

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

button { font: inherit; }

/* --------------------------------------------------------------------------
   设计令牌
   -------------------------------------------------------------------------- */
:root {
  --void: #060B1A;
  --midnight: #0D1730;
  --cyan: #17E5C8;
  --cyan-soft: #7CF3E2;
  --flare: #FF5A2B;
  --flare-soft: #FFB199;
  --paper: #E9F1FF;
  --muted: #8A9AB8;
  --grid: #1C2A4A;
  --grid-soft: rgba(28, 42, 74, 0.55);
  --white: #FFFFFF;

  --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", "SFMono-Regular", Menlo, Consolas, "Courier New", monospace;

  --edge: 1px solid var(--grid);
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --wrap: 1320px;
  --header-h: 96px;
  --gutter: clamp(16px, 4vw, 48px);
}

/* --------------------------------------------------------------------------
   基础与中文排版
   -------------------------------------------------------------------------- */
body {
  min-height: 100vh;
  background-color: var(--void);
  background-image:
    radial-gradient(760px 520px at 88% -6%, rgba(23, 229, 200, 0.12), transparent 62%),
    radial-gradient(620px 460px at 2% 16%, rgba(255, 90, 43, 0.08), transparent 66%),
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px);
  background-size: auto, auto, 72px 72px, 72px 72px;
  background-position: center top, center top, 0 0, 0 0;
  background-attachment: fixed, fixed, scroll, scroll;
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

p { text-wrap: pretty; }

a { color: var(--cyan-soft); }

strong, b { color: var(--white); }

[id] { scroll-margin-top: calc(var(--header-h) + 24px); }

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

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

.section { padding-block: clamp(48px, 7vw, 104px); }
.section--tight { padding-block: clamp(28px, 4vw, 56px); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 24px;
  padding-bottom: 14px;
  border-bottom: var(--edge);
  margin-bottom: clamp(24px, 3vw, 44px);
}

.section-head__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.section-head__title {
  font-size: clamp(22px, 3.4vw, 40px);
  margin: 0;
}

.section-head__note {
  margin-left: auto;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

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

.grid > * { min-width: 0; }

.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; }

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

.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.8;
}

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

.prose h2 {
  font-size: clamp(22px, 3vw, 32px);
  margin: 1.9em 0 0.55em;
}

.prose h3 {
  font-size: clamp(18px, 2vw, 22px);
  margin: 1.6em 0 0.5em;
  letter-spacing: -0.01em;
}

.prose a { text-underline-offset: 3px; }

.prose strong { color: var(--cyan); font-weight: 600; }

/* --------------------------------------------------------------------------
   通用组件
   -------------------------------------------------------------------------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--void);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus { transform: translateY(0); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--grid);
  border-radius: 0;
  background: transparent;
  color: var(--paper);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s var(--ease), color 0.15s var(--ease), border-color 0.15s var(--ease);
}

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

.btn--accent {
  background: var(--flare);
  border-color: var(--flare);
  color: var(--white);
}

.btn--accent:hover {
  background: var(--flare-soft);
  border-color: var(--flare-soft);
  color: var(--void);
}

.btn--cyan {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--void);
}

.btn--cyan:hover {
  background: var(--cyan-soft);
  border-color: var(--cyan-soft);
  color: var(--void);
}

.btn--ghost { background: rgba(13, 23, 48, 0.6); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--grid);
  border-radius: 4px;
  background: rgba(13, 23, 48, 0.7);
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.6;
}

.tag--cyan { border-color: rgba(23, 229, 200, 0.45); color: var(--cyan); }
.tag--flare { border-color: rgba(255, 90, 43, 0.5); color: var(--flare-soft); }

.panel {
  position: relative;
  background: var(--midnight);
  border: var(--edge);
  padding: clamp(18px, 2.2vw, 28px);
}

.panel--flush { padding: 0; }

.panel__label {
  margin-bottom: 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.stat__value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.stat__value--flare { color: var(--flare); }

.stat__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.highlight {
  display: block;
  padding: 10px 14px;
  border-left: 3px solid var(--cyan);
  background: rgba(23, 229, 200, 0.1);
  color: var(--paper);
}

.meter {
  position: relative;
  height: 6px;
  background: var(--grid);
  overflow: hidden;
}

.meter__fill {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--flare));
  transition: width 0.6s var(--ease);
}

.figure {
  position: relative;
  overflow: hidden;
  border: var(--edge);
  background: var(--midnight);
}

.figure__frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(140deg, #0A1226 0%, #101E3C 55%, #0A1226 100%);
}

.figure__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(23, 229, 200, 0.05) 0 1px, transparent 1px 4px),
    linear-gradient(90deg, rgba(23, 229, 200, 0.18), transparent 45%);
}

.figure__img,
.figure__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.figure__caption {
  padding: 10px 12px;
  border-top: var(--edge);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.breadcrumbs {
  padding-block: 20px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumbs li + li::before {
  content: "／";
  margin-right: 8px;
  color: var(--grid);
}

.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--cyan); }
.breadcrumbs [aria-current="page"] { color: var(--paper); }

.toc {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  font-size: 13px;
}

.toc__title {
  margin-bottom: 14px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.toc__list { border-left: var(--edge); }

.toc__link {
  display: block;
  padding: 8px 0 8px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

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

.to-top {
  position: fixed;
  right: clamp(16px, 2.4vw, 32px);
  bottom: clamp(16px, 2.4vw, 32px);
  z-index: 50;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--grid);
  background: var(--midnight);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.12em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease), visibility 0.24s var(--ease);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

html.has-js [data-reveal] {
  opacity: 0;
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease);
}

html.has-js [data-reveal="left"] { transform: translateX(-12px); }
html.has-js [data-reveal="right"] { transform: translateX(12px); }
html.has-js [data-reveal="up"] { transform: translateY(12px); }

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

/* --------------------------------------------------------------------------
   头部：左右分置导航
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(6, 11, 26, 0.88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: var(--edge);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-h);
  padding-block: 16px;
  transition: min-height 0.32s var(--ease), padding 0.32s var(--ease);
}

.site-header.is-condensed .site-header__inner {
  min-height: 56px;
  padding-block: 6px;
}

.brand-zone {
  display: flex;
  align-items: center;
  min-width: 0;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  text-decoration: none;
  color: var(--cyan);
}

.brand__mark {
  font-size: clamp(16px, 1.6vw, 20px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.1;
  transition: font-size 0.32s var(--ease);
}

.site-header.is-condensed .brand__mark { font-size: 16px; }

.brand__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  white-space: nowrap;
}

.site-header.is-condensed .brand__meta { display: none; }

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

.brand__season { color: var(--muted); }

.brand__version {
  padding-left: 8px;
  border-left: var(--edge);
  font-family: var(--font-mono);
  color: var(--grid);
  letter-spacing: 0.06em;
}

.nav-zone {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  min-height: 40px;
  border: var(--edge);
  background: transparent;
  color: var(--paper);
  cursor: pointer;
  transition: border-color 0.15s var(--ease), color 0.15s var(--ease);
}

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

.nav-toggle__label {
  font-size: 12px;
  letter-spacing: 0.14em;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 10px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--cyan);
  transition: transform 0.25s var(--ease);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  transform: translateY(4.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  transform: translateY(-4.5px) rotate(-45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 34px);
}

.nav-heading {
  display: none;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(14px, 1.8vw, 26px);
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color 0.15s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s var(--ease);
}

.nav-link:hover { color: var(--cyan); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link[aria-current="page"] { color: var(--paper); }
.nav-link[aria-current="page"]::after { transform: scaleX(1); }

.nav-cta { flex: none; }

.nav-scrim { display: none; }

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--cyan), var(--flare));
  transition: transform 0.12s linear;
}

/* --------------------------------------------------------------------------
   页脚：四段式 + 法务条 + 数据带
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: clamp(64px, 10vw, 140px);
  border-top: var(--edge);
  background: linear-gradient(180deg, rgba(13, 23, 48, 0.68), rgba(6, 11, 26, 1));
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr 1.5fr 1.1fr;
  gap: clamp(24px, 3vw, 48px);
  padding-block: clamp(40px, 6vw, 76px);
}

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

.footer-block__title {
  padding-top: 14px;
  margin-bottom: 16px;
  border-top: var(--edge);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.footer-block--brand .brand { margin-bottom: 16px; }

.brand--footer { color: var(--cyan); }

.footer-note {
  max-width: 42ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.footer-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-top: 20px;
}

.footer-stat { min-width: 84px; }

.footer-stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.footer-stat__label {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.footer-list li + li { margin-top: 10px; }

.footer-list a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.15s var(--ease);
}

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

.footer-list--inline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 16px;
}

.footer-list--inline li + li { margin-top: 0; }

.footer-address {
  display: grid;
  gap: 10px;
  font-style: normal;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.footer-address__line {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 10px;
}

.footer-address__key {
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: 0.14em;
  padding-top: 3px;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  padding-block: 18px;
  border-top: var(--edge);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-legal a {
  color: var(--muted);
  text-decoration: none;
}

.footer-legal a:hover { color: var(--cyan); }

.footer-legal__icp { font-family: var(--font-mono); letter-spacing: 0.06em; }

.footer-ticker {
  overflow: hidden;
  border-top: var(--edge);
  padding-block: 11px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}

.ticker-track {
  display: flex;
  width: max-content;
  animation: ticker-slide 46s linear infinite;
}

.ticker-group {
  display: flex;
  align-items: center;
  gap: clamp(24px, 4vw, 56px);
  padding-right: clamp(24px, 4vw, 56px);
}

.ticker-item {
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.ticker-item::before {
  content: "◆";
  margin-right: 8px;
  font-size: 8px;
  vertical-align: middle;
  color: var(--cyan);
}

.footer-ticker:hover .ticker-track { animation-play-state: paused; }

@keyframes ticker-slide {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .span-3, .span-4, .span-5 { grid-column: span 6; }
  .span-7, .span-8 { grid-column: span 12; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 980px) {
  :root { --header-h: 72px; }

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

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    width: min(86vw, 340px);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: calc(var(--header-h) + 24px) var(--gutter) 40px;
    background: var(--midnight);
    border-left: var(--edge);
    overflow-y: auto;
    transform: translateX(102%);
    visibility: hidden;
    transition: transform 0.32s var(--ease), visibility 0.32s var(--ease);
  }

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

  .nav-heading {
    display: block;
    margin-bottom: 10px;
    padding-bottom: 12px;
    border-bottom: var(--edge);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-list__item { border-bottom: var(--edge); }

  .nav-link {
    display: block;
    padding: 16px 0;
    font-size: 15px;
    letter-spacing: 0.06em;
    color: var(--paper);
  }

  .nav-link::after { display: none; }

  .nav-link[aria-current="page"] { color: var(--cyan); }

  .nav-cta {
    margin-top: 26px;
    width: 100%;
    padding-block: 14px;
  }

  .site-header[data-nav-open] .nav-scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 85;
    background: rgba(6, 11, 26, 0.72);
  }
}

@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
  .grid > [class*="span-"] { grid-column: auto; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
  .toc { position: static; }
  .section-head__note { margin-left: 0; }
}

/* --------------------------------------------------------------------------
   可访问性
   -------------------------------------------------------------------------- */
@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;
  }

  .ticker-track { animation: none; }

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

  .scroll-progress__bar { transition: none; }
}