/* ==========================================================================
   冠竞赛事 /assets/site.css
   共享外壳：reset、变量、中文排版、页头、页脚、通用组件
   ========================================================================== */

*,
*::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, h6,
p, ul, ol, figure, blockquote, dl, dd { margin: 0; }

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

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

button, input, select, textarea { font: inherit; color: inherit; }

a { color: inherit; }

:root {
  /* 色彩 */
  --ink: #071A16;
  --panel: #0D2A24;
  --line: #1C3F36;
  --cyan: #4FF0D0;
  --orange: #FF7A3D;
  --paper: #E9DFC8;
  --white: #F7F4EA;
  --graphite: #1B2320;
  --mist: #8FA79F;
  --red: #E4574C;

  /* 字体 */
  --font-display: "Archivo Narrow", "Arial Narrow", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-editorial: "Source Han Serif SC", "Noto Serif SC", "Songti SC", STSong, SimSun, serif;
  --font-numeric: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;

  /* 节奏 */
  --ease: cubic-bezier(.22, 1, .36, 1);
  --maxw: 1440px;
  --shadow-ticket: 0 18px 42px -30px rgba(0, 0, 0, .95);
}

body {
  background-color: var(--ink);
  background-image:
    radial-gradient(circle at 78% -12%, rgba(79, 240, 208, .07), transparent 56%),
    radial-gradient(circle at 6% 6%, rgba(255, 122, 61, .05), transparent 46%);
  background-repeat: no-repeat;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

/* ---------- 布局容器 ---------- */

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 48px);
}

.container {
  width: 100%;
  max-width: 1080px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 48px);
}

.section {
  padding-block: clamp(40px, 6vw, 88px);
}

.section--panel {
  background: var(--panel);
  border-block: 1px solid var(--line);
}

.section--paper {
  background-color: var(--paper);
  background-image: repeating-linear-gradient(0deg, rgba(27, 35, 32, .035) 0 1px, transparent 1px 5px);
  color: var(--graphite);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 32fr) minmax(0, 68fr);
  gap: clamp(20px, 3vw, 44px);
  align-items: start;
}

.rail {
  position: sticky;
  top: clamp(16px, 3vw, 32px);
  align-self: start;
}

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ---------- 排版 ---------- */

.display-xl {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(56px, 12vw, 140px);
  line-height: .86;
  letter-spacing: -.03em;
  margin: 0;
  text-wrap: balance;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.12;
  letter-spacing: -.01em;
  margin: 0;
  text-wrap: balance;
}

.section-index {
  font-family: var(--font-numeric);
  font-weight: 700;
  font-size: clamp(30px, 4.5vw, 52px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--mist);
  margin: 0;
}

.eyebrow {
  font-family: var(--font-numeric);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
  margin: 0;
}

.section--paper .section-index { color: rgba(27, 35, 32, .45); }
.section--paper .eyebrow { color: rgba(27, 35, 32, .62); }

.score {
  font-family: var(--font-numeric);
  font-weight: 700;
  font-size: clamp(40px, 8vw, 96px);
  line-height: .9;
  letter-spacing: -.02em;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}

.score--xl {
  font-size: clamp(64px, 14vw, 140px);
}

.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.75;
}

.prose p + p { margin-top: 1.1em; }
.prose a { color: var(--cyan); text-underline-offset: 3px; }
.prose h2, .prose h3 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.15;
  margin: 1.7em 0 .6em;
}
.prose ul { list-style: disc; padding-left: 1.25em; }
.prose li + li { margin-top: .4em; }
.section--paper .prose a { color: #0C6B58; }

/* ---------- 页头 ---------- */

.skip-link {
  position: absolute;
  left: 12px;
  top: -72px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-numeric);
  font-size: 13px;
  text-decoration: none;
  transition: top .2s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { top: 12px; }

.site-header {
  position: relative;
  z-index: 40;
  background: var(--ink);
}

/* 顶部比分带 */

.header-rail {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.header-rail__inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 24px);
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 48px);
  min-height: 46px;
}

.rail-score {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  margin-right: auto;
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
  white-space: nowrap;
}

.rail-score__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 61, .16);
  animation: rail-pulse 2.6s ease-in-out infinite;
}

.rail-score__label { color: var(--mist); }

.rail-score__value {
  color: var(--cyan);
  font-weight: 700;
}

@keyframes rail-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}

.header-utility {
  display: flex;
  align-items: center;
  gap: 18px;
}

.utility-link {
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.utility-link:hover,
.utility-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: rgba(79, 240, 208, .55);
}

/* 版本切换 */

.version-switch {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.version-switch__label {
  font-family: var(--font-numeric);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
  white-space: nowrap;
}

.version-switch__group {
  display: flex;
  border: 1px solid var(--line);
  background: var(--ink);
  overflow: hidden;
}

.version-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--mist);
  font-family: var(--font-numeric);
  font-size: 11.5px;
  letter-spacing: .06em;
  line-height: 1.2;
  padding: 6px 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}

.version-btn:hover { color: var(--white); }

.version-btn[aria-pressed="true"] {
  background: var(--paper);
  color: var(--graphite);
}

.version-btn[aria-pressed="true"]:hover { color: var(--graphite); }

.version-note {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  z-index: 80;
  width: min(300px, 78vw);
  margin: 0;
  padding: 12px 14px;
  background: var(--paper);
  color: var(--graphite);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-ticket);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0;
}

.version-note::before {
  content: "";
  position: absolute;
  top: -6px;
  right: 22px;
  width: 10px;
  height: 10px;
  background: var(--paper);
  border-left: 1px solid var(--line);
  border-top: 1px solid var(--line);
  transform: rotate(45deg);
}

/* 居中刊头 */

.masthead {
  text-align: center;
  padding-block: clamp(20px, 3.4vw, 38px) clamp(14px, 2.2vw, 24px);
}

.masthead__brand {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(42px, 7.4vw, 96px);
  line-height: .92;
  letter-spacing: -.035em;
  color: var(--white);
  text-decoration: none;
  text-shadow: 0 0 46px rgba(79, 240, 208, .16);
}

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

.masthead__tagline {
  margin-top: 12px;
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--mist);
}

/* 移动端开关 */

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 48px;
  border: 0;
  border-top: 1px solid var(--line);
  background: var(--panel);
  color: var(--white);
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .18em;
  cursor: pointer;
}

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

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: background-color .2s var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform .22s var(--ease), top .22s var(--ease);
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

/* 导航 */

.site-nav {
  position: relative;
  z-index: 30;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--ink);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(10px, 2.4vw, 34px);
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 15px 2px;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: .02em;
  text-decoration: none;
  transition: color .18s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 9px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .26s var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible { color: var(--cyan); }

.nav-link:hover::after,
.nav-link:focus-visible::after { transform: scaleX(1); }

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

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

/* ---------- 页脚 ---------- */

.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  background-image: linear-gradient(180deg, var(--panel) 0%, var(--ink) 42%);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: clamp(24px, 4vw, 56px);
  padding-block: clamp(40px, 6vw, 76px);
}

.footer-brand__mark {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--white);
  text-decoration: none;
}

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

.footer-brand__note {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-brand__meta {
  margin-top: 10px;
  max-width: 34ch;
  font-family: var(--font-numeric);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: rgba(143, 167, 159, .72);
}

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-numeric);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--mist);
  text-transform: uppercase;
}

.footer-links {
  display: grid;
  gap: 9px;
}

.footer-links a {
  display: inline-block;
  font-size: 14.5px;
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--cyan);
  border-bottom-color: rgba(79, 240, 208, .5);
}

.footer-contact {
  display: grid;
  gap: 12px;
}

.footer-contact li {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

.footer-contact__key {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-numeric);
  font-size: 11px;
  letter-spacing: .12em;
  color: rgba(143, 167, 159, .8);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  padding-block: 20px;
  border-top: 1px solid var(--line);
}

.footer-copy {
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
}

.legal-links a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.legal-links a:hover,
.legal-links a:focus-visible {
  color: var(--cyan);
  border-bottom-color: rgba(79, 240, 208, .5);
}

/* ---------- 通用组件 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: .02em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.btn--primary {
  background: var(--orange);
  color: var(--ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.btn--primary:hover { background: #FF9564; }

.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--white);
}

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

.btn--paper {
  background: var(--graphite);
  color: var(--paper);
}

.btn--paper:hover { background: #0C6B58; color: var(--paper); }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: clamp(18px, 2.4vw, 28px);
}

.card--ticket {
  box-shadow: var(--shadow-ticket);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.card--paper {
  background: var(--paper);
  color: var(--graphite);
  border-color: #C9BDA0;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  font-family: var(--font-numeric);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mist);
  white-space: nowrap;
}

.tag--live {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
  font-weight: 700;
}

.tag--cyan {
  color: var(--cyan);
  border-color: rgba(79, 240, 208, .42);
}

/* 图片容器（页面阶段放置 <img>） */

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--panel);
  border: 1px solid var(--line);
}

.media-frame > img,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(7, 26, 22, .22) 0 1px, transparent 1px 4px);
  opacity: .34;
}

.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 4 / 5; }

.media-frame--ticket {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.media-frame--paper {
  background: var(--paper);
  border-color: #C9BDA0;
}

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 10px 14px;
  background: linear-gradient(180deg, transparent, rgba(7, 26, 22, .9));
  font-family: var(--font-numeric);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--cyan);
}

/* 面包屑 */

.breadcrumb {
  padding-block: 18px;
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

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

.breadcrumb a {
  color: var(--mist);
  text-decoration: none;
}

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

.breadcrumb [aria-current="page"] { color: var(--white); }

/* ---------- 动效 ---------- */

.scroll-progress {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 120;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

html.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .4s var(--ease), transform .4s var(--ease);
  transition-delay: calc(var(--reveal-delay, 0) * 60ms);
}

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

/* ---------- 响应式 ---------- */

@media (max-width: 1180px) {
  .footer-inner { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-col--contact { grid-column: 1 / -1; }
  .footer-contact { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 32px; }
}

@media (max-width: 1024px) {
  .split { grid-template-columns: minmax(0, 28fr) minmax(0, 72fr); }
  .header-utility { display: none; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  body { font-size: 16px; }

  .header-rail__inner {
    min-height: 42px;
    gap: 10px;
  }

  .rail-score__label { display: none; }

  .rail-score__value { font-size: 11.5px; }

  .version-switch { gap: 0; }

  .version-switch__label { display: none; }

  .version-note {
    right: auto;
    left: 0;
    width: min(280px, 84vw);
  }

  .version-note::before { right: auto; left: 18px; }

  .masthead { padding-block: 18px 14px; }

  .masthead__tagline { font-size: 11px; letter-spacing: .18em; }

  .nav-toggle { display: flex; }

  .site-nav {
    display: none;
    border-top: 0;
  }

  .site-nav[data-open="true"] { display: block; }

  .nav-list {
    flex-direction: column;
    gap: 0;
    justify-content: stretch;
    padding-block: 6px 14px;
  }

  .nav-list li { border-bottom: 1px solid var(--line); }
  .nav-list li:last-child { border-bottom: 0; }

  .nav-link {
    display: flex;
    align-items: center;
    min-height: 50px;
    padding: 14px 6px;
    font-size: 17px;
  }

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

  .nav-link[aria-current="page"] {
    padding-left: 14px;
    box-shadow: inset 3px 0 0 var(--orange);
    background: rgba(79, 240, 208, .06);
  }

  .split { grid-template-columns: minmax(0, 1fr); }

  .rail { position: static; top: auto; }

  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .footer-col--contact { grid-column: auto; }

  .footer-contact { grid-template-columns: minmax(0, 1fr); gap: 12px; }

  .footer-brand__note,
  .footer-brand__meta { max-width: 46ch; }

  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (max-width: 420px) {
  .rail-score__value { display: none; }
  .version-btn { padding: 6px 8px; font-size: 11px; }
}

/* ---------- 偏好与打印 ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    transition-delay: 0ms !important;
  }

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

@media print {
  body {
    background: #fff;
    color: #000;
    font-size: 12pt;
  }

  .header-rail,
  .site-nav,
  .nav-toggle,
  .scroll-progress { display: none !important; }

  .site-header,
  .site-footer {
    background: #fff;
    border-color: #bbb;
  }

  .masthead__brand,
  .masthead__tagline,
  .footer-brand__mark,
  .footer-brand__note,
  .footer-brand__meta,
  .footer-links a,
  .footer-col__title,
  .footer-contact li,
  .footer-contact__key,
  .footer-copy,
  .legal-links a { color: #000; }

  a { color: #000; text-decoration: underline; }
}