/* ============================================================
   9博体育赛事 — /assets/site.css
   共享外壳：reset、变量、中文排版、头部、页脚、通用组件
   ============================================================ */

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

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

body, h1, h2, h3, h4, h5, p, ul, ol, dl, dd, dt, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
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; }
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- 变量 ---------- */
:root {
  --ink: #072B25;
  --panel: #0C3A31;
  --panel-deep: #05201B;
  --cyan: #35F2C0;
  --flame: #FF5A36;
  --paper: #F3E9D2;
  --brown: #1A1410;
  --mist: #9DB5AD;
  --edge: #0E6E5C;
  --gold: #C99A2E;
  --warn: #E03A2F;

  --font-head: "Oswald", "Archivo Narrow", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-edit: "Noto Serif SC", "Source Serif Pro", "Songti SC", Georgia, serif;

  --wrap: 1280px;
  --gutter: clamp(16px, 4vw, 48px);
  --header-h: 104px;
  --hair: rgba(53, 242, 192, 0.22);
  --hair-soft: rgba(53, 242, 192, 0.12);
}

@media (max-width: 1020px) {
  :root { --header-h: 62px; }
}

/* ---------- 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 620px at 82% -12%, rgba(14, 110, 92, 0.42), transparent 62%),
    radial-gradient(760px 420px at -8% 24%, rgba(53, 242, 192, 0.07), transparent 60%);
  background-repeat: no-repeat;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}

h1 { font-size: clamp(38px, 6.4vw, 88px); line-height: 0.98; }
h2 { font-size: clamp(28px, 4vw, 46px); }
h3 { font-size: clamp(20px, 2.4vw, 27px); }
h4 { font-size: 18px; }

p { max-width: 74ch; }
strong { color: var(--cyan); font-weight: 600; }
small { font-size: 13px; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.data-figure {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

#main-content { display: block; }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

/* ---------- 布局容器 ---------- */
.wrap {
  width: min(calc(100% - var(--gutter) * 2), var(--wrap));
  margin-inline: auto;
}

.section { padding: clamp(44px, 7vw, 96px) 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--flame);
}

.section-title { font-size: clamp(28px, 4vw, 46px); }

.lede {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--mist);
  line-height: 1.72;
  max-width: 62ch;
}

.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.75;
  color: rgba(243, 233, 210, 0.86);
}

.prose > * + * { margin-top: 1em; }
.prose h2, .prose h3 { color: var(--paper); margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.2em; list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }
.prose a { color: var(--cyan); border-bottom: 1px solid var(--hair); }
.prose a:hover { border-bottom-color: var(--cyan); }

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

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

@media (max-width: 860px) {
  .span-3, .span-4, .span-6, .span-8, .span-9 { grid-column: span 12; }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  padding: 0.72em 1.2em;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  line-height: 1.2;
  white-space: nowrap;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn-primary {
  background: var(--cyan);
  color: #04211C;
  border-color: var(--cyan);
  box-shadow: 4px 4px 0 rgba(255, 90, 54, 0.42);
}

.btn-primary:hover { background: #63ffd5; border-color: #63ffd5; }

.btn-ghost {
  background: transparent;
  color: var(--cyan);
  border-color: var(--edge);
}

.btn-ghost:hover { background: rgba(53, 242, 192, 0.1); border-color: var(--cyan); }

.btn-flame {
  background: var(--flame);
  color: var(--brown);
  border-color: var(--flame);
}

.btn-flame:hover { background: #ff7757; border-color: #ff7757; }

.btn-block { width: 100%; }

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.4;
  color: var(--cyan);
  background: rgba(53, 242, 192, 0.06);
}

.tag--flame { color: var(--flame); background: rgba(255, 90, 54, 0.1); }
.tag--gold { color: var(--gold); background: rgba(201, 154, 46, 0.12); }

.tag--paper {
  color: var(--brown);
  background: var(--paper);
  border-color: var(--brown);
}

/* ---------- 纸张说明牌 ---------- */
.plate {
  position: relative;
  margin-top: 22px;
  padding: 20px 22px;
  background: var(--paper);
  color: var(--brown);
  border: 1px solid var(--brown);
  border-radius: 2px;
  box-shadow:
    7px 7px 0 rgba(53, 242, 192, 0.16),
    7px 7px 0 1px rgba(53, 242, 192, 0.32);
}

.plate-tag {
  display: inline-block;
  margin-bottom: 14px;
  padding: 3px 8px;
  border: 1px solid rgba(26, 20, 16, 0.35);
  background: rgba(26, 20, 16, 0.07);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brown);
}

.plate-rows { display: grid; gap: 8px; }

.plate-row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 14.5px;
}

.plate-row dt {
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: rgba(26, 20, 16, 0.6);
}

.plate-row dd {
  color: var(--brown);
  overflow-wrap: anywhere;
}

.plate-note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed rgba(26, 20, 16, 0.3);
  font-size: 12.5px;
  line-height: 1.62;
  color: rgba(26, 20, 16, 0.74);
  max-width: 46ch;
}

@media (max-width: 420px) {
  .plate-row { grid-template-columns: 1fr; gap: 2px; }
}

/* ---------- 图片容器基础规则（页面阶段放置素材） ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: linear-gradient(142deg, var(--panel) 0%, var(--panel-deep) 100%);
  border: 1px solid var(--hair);
  border-radius: 2px;
}

.media > img,
.media > video,
.media > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.media-16x9 { aspect-ratio: 16 / 9; }
.media-4x3 { aspect-ratio: 4 / 3; }
.media-1x1 { aspect-ratio: 1 / 1; }
.media-ultrawide { aspect-ratio: 21 / 9; }

.media--placeholder::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(135deg, rgba(53, 242, 192, 0.09) 0 2px, transparent 2px 11px);
  pointer-events: none;
}

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

@media (max-width: 640px) {
  .media-ultrawide { aspect-ratio: 16 / 9; }
}

/* ---------- 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.breadcrumbs li { display: inline-flex; align-items: center; }
.breadcrumbs li::after { content: "/"; margin-left: 8px; color: var(--edge); }
.breadcrumbs li:last-child::after { content: ""; margin: 0; }
.breadcrumbs a:hover { color: var(--cyan); }
.breadcrumbs [aria-current="page"] { color: var(--cyan); }

/* ---------- 横向数据卡片流 ---------- */
.scroll-rail {
  display: flex;
  gap: clamp(14px, 1.6vw, 22px);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-left: 2px;
  padding-bottom: 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--edge) transparent;
}

.scroll-rail > * {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.scroll-rail::-webkit-scrollbar { height: 6px; }
.scroll-rail::-webkit-scrollbar-track { background: rgba(53, 242, 192, 0.08); }
.scroll-rail::-webkit-scrollbar-thumb { background: var(--edge); border-radius: 99px; }

/* ---------- 滚动显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.62s cubic-bezier(0.2, 0.7, 0.3, 1),
    transform 0.62s cubic-bezier(0.2, 0.7, 0.3, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

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

/* ============================================================
   头部
   ============================================================ */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 15px;
  background: var(--cyan);
  color: #04211C;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  transform: translateY(-180%);
  transition: transform 0.18s ease;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background-image: linear-gradient(
    180deg,
    rgba(7, 43, 37, 0.96) 0%,
    rgba(7, 43, 37, 0.84) 58%,
    rgba(7, 43, 37, 0) 100%
  );
  transition: background-color 0.28s ease, box-shadow 0.28s ease;
}

.site-header.is-solid {
  background-color: var(--ink);
  background-image: none;
  box-shadow: 0 1px 0 var(--hair), 0 20px 40px -30px rgba(0, 0, 0, 0.95);
}

/* 桌面刻度横杆 */
.header-rail {
  display: none;
  border-bottom: 1px solid var(--hair-soft);
}

.rail-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 30px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.rail-tag { color: var(--cyan); }

.rail-meta { display: inline-flex; align-items: center; gap: 9px; }

.rail-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--flame);
  box-shadow: 0 0 0 3px rgba(255, 90, 54, 0.22);
}

.rail-mono { color: rgba(157, 181, 173, 0.92); }

@media (min-width: 1021px) {
  .header-rail { display: block; }
}

/* 主行 */
.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  min-height: 74px;
}

@media (max-width: 1020px) {
  .header-inner { min-height: 62px; gap: 10px; }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding: 6px 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: var(--cyan);
  color: #04211C;
  border-radius: 2px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 24px;
  line-height: 1;
  box-shadow: 3px 3px 0 rgba(255, 90, 54, 0.55);
}

.brand-lockup { display: block; }

.brand-name {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.brand-descriptor {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

/* 导航 */
.primary-nav { margin-left: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(6px, 1.4vw, 20px);
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 11px 2px;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--paper);
  transition: color 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 5px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s ease;
}

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

.nav-panel-cta { display: none; }

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

@media (min-width: 1021px) and (max-width: 1180px) {
  .header-actions .btn-ghost { display: none; }
  .nav-link { font-size: 14px; padding-inline: 1px; }
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 9px 12px;
  border: 1px solid var(--edge);
  border-radius: 2px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

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

.nav-toggle-bars i {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: currentColor;
  transition: transform 0.22s ease;
}

.nav-toggle-bars i:first-child { top: 0; }
.nav-toggle-bars i:last-child { bottom: 0; }

.site-header[data-open] .nav-toggle {
  border-color: var(--cyan);
  background: rgba(53, 242, 192, 0.12);
}

.site-header[data-open] .nav-toggle-bars i:first-child { transform: translateY(4px) rotate(45deg); }
.site-header[data-open] .nav-toggle-bars i:last-child { transform: translateY(-4px) rotate(-45deg); }

/* 阅读进度尺 */
.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(53, 242, 192, 0.08);
  overflow: hidden;
}

.header-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--edge) 0%, var(--cyan) 62%, var(--flame) 100%);
}

/* 移动端导航面板 */
@media (max-width: 1020px) {
  .header-actions { display: none; }
  .nav-toggle { display: inline-flex; }

  .primary-nav {
    position: fixed;
    left: 0;
    right: 0;
    top: var(--header-h);
    z-index: 85;
    margin: 0;
    padding: 14px var(--gutter) 26px;
    background-image: linear-gradient(180deg, var(--panel) 0%, var(--ink) 100%);
    border-top: 1px solid var(--hair);
    border-bottom: 1px solid var(--hair);
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    overscroll-behavior: contain;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  }

  .site-header[data-open] .primary-nav,
  .primary-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

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

  .nav-item { border-bottom: 1px dashed rgba(157, 181, 173, 0.22); }
  .nav-item:last-child { border-bottom: 0; }

  .nav-link {
    display: block;
    padding: 14px 2px;
    font-family: var(--font-head);
    font-size: 17px;
    letter-spacing: 0.01em;
  }

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

  .nav-link[aria-current="page"] {
    color: var(--cyan);
    padding-left: 16px;
  }

  .nav-link[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 6px;
    margin-top: -3px;
    background: var(--cyan);
  }

  .nav-panel-cta {
    display: grid;
    gap: 10px;
    margin-top: 20px;
  }
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 110px);
  background-color: var(--ink);
  background-image: linear-gradient(180deg, rgba(12, 58, 49, 0.55) 0%, rgba(7, 43, 37, 0) 42%);
  border-top: 1px solid var(--hair);
  color: var(--mist);
}

.footer-ticks {
  height: 14px;
  border-bottom: 1px solid var(--hair-soft);
  background-image:
    repeating-linear-gradient(90deg, rgba(255, 90, 54, 0.6) 0 1px, transparent 1px 140px),
    repeating-linear-gradient(90deg, rgba(53, 242, 192, 0.42) 0 1px, transparent 1px 28px);
  background-size: 140px 14px, 28px 7px;
  background-position: left bottom, left bottom;
  background-repeat: repeat-x, repeat-x;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 56px);
  padding: clamp(38px, 5vw, 66px) 0 clamp(30px, 4vw, 50px);
}

@media (min-width: 900px) {
  .footer-grid { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.35fr); }
}

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

.footer-brand {
  font-family: var(--font-head);
  font-size: clamp(24px, 2.6vw, 30px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.footer-summary {
  margin-top: 10px;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: clamp(20px, 3vw, 36px);
  align-content: start;
}

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

.footer-col-title {
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-links { display: grid; gap: 11px; }

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 15px;
  color: rgba(243, 233, 210, 0.86);
  transition: color 0.2s ease, gap 0.2s ease;
}

.footer-link::before {
  content: "";
  width: 9px;
  height: 1px;
  background: var(--edge);
  transition: width 0.2s ease, background-color 0.2s ease;
}

.footer-link:hover { color: var(--cyan); gap: 12px; }
.footer-link:hover::before { width: 16px; background: var(--flame); }

.footer-base {
  background: rgba(0, 0, 0, 0.22);
  border-top: 1px solid var(--hair-soft);
}

.footer-base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 18px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.footer-legal { color: rgba(157, 181, 173, 0.95); }
.footer-hint { color: rgba(157, 181, 173, 0.72); }
.footer-icp { color: rgba(157, 181, 173, 0.9); }

/* ============================================================
   无障碍 / 动效降级
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .site-header,
  .primary-nav,
  .nav-link,
  .nav-link::after,
  .nav-toggle,
  .nav-toggle-bars i,
  .btn,
  .footer-link,
  .footer-link::before,
  .skip-link {
    transition: none;
  }

  .header-progress-bar { background: var(--cyan); }
}