/* =============================================================
   AK体育 · 友谊赛数据登记与赛事日历
   共享样式表 /assets/site.css
   顺序：变量 → reset → 中文排版 → 通用组件 → 头部 → 页脚 → 响应式
   ============================================================= */

/* ---------- 1. 变量 ---------- */
:root {
  --ink: #05110D;
  --ink-2: #0A1A15;
  --panel: #10241D;
  --line: #17332A;
  --turf: #1E4034;
  --cyan: #35F2D0;
  --cyan-soft: #7BFAE3;
  --paper: #EAF3EF;
  --mute: #A9BDB6;
  --magenta: #FF3D8B;
  --amber: #FFC24B;
  --slate: #5E7A86;

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

  --wrap: 1280px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius-organic: 18px 4px 18px 4px;
  --shadow-panel: 0 26px 52px -34px rgba(0, 0, 0, .95);
  --ease: cubic-bezier(.22, .7, .3, 1);
  --t-fast: 160ms;
}

/* ---------- 2. reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 132px;
}

body {
  margin: 0;
  background-color: var(--ink);
  background-image:
    radial-gradient(120% 76% at 92% -12%, rgba(53, 242, 208, .10), transparent 58%),
    radial-gradient(90% 58% at -8% 24%, rgba(255, 61, 139, .055), transparent 55%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body, h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.2;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
img, svg, video, canvas { display: block; max-width: 100%; }
table { border-collapse: collapse; border-spacing: 0; width: 100%; }
[hidden] { display: none !important; }

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

/* ---------- 3. 中文排版与容器 ---------- */
.wrap {
  width: min(calc(100% - var(--gutter) * 2), var(--wrap));
  margin-inline: auto;
}

.prose {
  max-width: 680px;
  font-size: 16px;
  line-height: 1.65;
  color: var(--paper);
}
.prose p + p { margin-top: 1em; }
.prose a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }

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

.section { padding-block: clamp(36px, 5.6vw, 84px); }
.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 22px;
  margin-bottom: clamp(18px, 2.8vw, 34px);
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}
.section-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 900;
  letter-spacing: -.02em;
}
.section-lede {
  max-width: 62ch;
  font-size: 15px;
  color: var(--mute);
}

/* ---------- 4. 通用网格 ---------- */
.grid { display: grid; gap: clamp(14px, 2vw, 24px); }
.grid--split {
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 44px);
}

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 10px 3px 10px 3px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  white-space: nowrap;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.btn--solid { background: var(--cyan); color: var(--ink); }
.btn--solid:hover { background: var(--cyan-soft); }
.btn--ghost { border-color: var(--line); color: var(--cyan); background: rgba(16, 36, 29, .45); }
.btn--ghost:hover { border-color: rgba(53, 242, 208, .6); background: rgba(53, 242, 208, .1); color: var(--cyan-soft); }
.btn:active { transform: translateY(1px); }

/* ---------- 6. 标签与胶囊 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 13px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mute);
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease);
}
.chip:hover { color: var(--paper); }
.chip.is-active,
.chip[aria-pressed="true"] {
  background: var(--turf);
  border-color: rgba(53, 242, 208, .4);
  color: var(--cyan);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(16, 36, 29, .6);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--mute);
}
.tag--level { color: var(--cyan); border-color: rgba(53, 242, 208, .35); }
.tag--season { color: var(--amber); border-color: rgba(255, 194, 75, .32); }
.tag--alert { color: var(--magenta); border-color: rgba(255, 61, 139, .35); }

/* ---------- 7. 面板 ---------- */
.panel {
  position: relative;
  display: block;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  transition: transform var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease);
}
.panel:hover {
  transform: translateY(-4px);
  border-color: rgba(53, 242, 208, .45);
  box-shadow: var(--shadow-panel);
}
.panel--accent {
  background:
    linear-gradient(158deg, rgba(53, 242, 208, .09), transparent 62%),
    var(--panel);
  border-color: rgba(53, 242, 208, .5);
}
.panel--ink { background: var(--ink-2); }
.panel__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--mute);
}
.panel__title {
  margin-top: 6px;
  font-size: clamp(17px, 2vw, 19px);
  font-weight: 800;
}
.panel__body {
  margin-top: 12px;
  font-size: 14px;
  color: var(--mute);
}

/* ---------- 8. 数据读数 ---------- */
.stat { display: flex; flex-direction: column; gap: 5px; }
.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3.4vw, 42px);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1;
  color: var(--paper);
  transition: color var(--t-fast) var(--ease);
}
.stat__value--cyan { color: var(--cyan); }
.stat__value--magenta { color: var(--magenta); }
.stat__value--amber { color: var(--amber); }
.panel:hover .stat__value { color: var(--cyan); }
.panel:hover .stat__value--magenta { color: var(--magenta); }
.panel:hover .stat__value--amber { color: var(--amber); }
.stat__label {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mute);
}

/* ---------- 9. 表格 ---------- */
.data-table { width: 100%; font-size: 13.5px; }
.data-table caption {
  padding-bottom: 10px;
  text-align: left;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mute);
}
.data-table th,
.data-table td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}
.data-table thead th {
  background: rgba(10, 26, 21, .6);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--slate);
}
.data-table tbody tr { transition: background var(--t-fast) var(--ease); }
.data-table tbody tr:hover { background: rgba(30, 64, 52, .45); }
.data-table .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}
.data-table tr[data-expandable] { cursor: pointer; }
.data-table tr[data-expandable]:focus-visible { outline-offset: -2px; }
.data-table .row-detail td {
  background: var(--ink-2);
  font-size: 13px;
  color: var(--mute);
}

/* ---------- 10. 筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 26px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.filter-group { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.filter-group__label {
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--slate);
}

/* ---------- 11. 时间轴 ---------- */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-left: 22px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 242, 208, .08));
}
.timeline__item { position: relative; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -21px;
  top: 7px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  background: var(--ink);
}

/* ---------- 12. 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: 20px 4px 20px 4px;
  background: linear-gradient(150deg, #0D2019 0%, #05110D 58%);
}
.media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image: repeating-linear-gradient(115deg, rgba(53, 242, 208, .10) 0 1px, transparent 1px 9px);
  opacity: .55;
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image: radial-gradient(rgba(234, 243, 239, .07) 1px, transparent 1px);
  background-size: 3px 3px;
  opacity: .5;
  mix-blend-mode: screen;
}
.media > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.88) contrast(1.06) brightness(.94);
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  padding: 14px 16px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mute);
  background: linear-gradient(180deg, transparent, rgba(5, 17, 13, .92));
}

/* ---------- 13. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-block: 16px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate);
}
.breadcrumbs li { display: inline-flex; align-items: center; gap: 10px; }
.breadcrumbs li + li::before { content: "/"; color: var(--line); }
.breadcrumbs a:hover { color: var(--cyan-soft); }

/* ---------- 14. 显现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 15. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 8px 2px 8px 2px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-180%);
  transition: transform var(--t-fast) var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 16. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(5, 17, 13, .94);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  z-index: 3;
}

.header-top__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 32px);
  min-height: 74px;
  padding-block: 12px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand__mark {
  width: 44px;
  height: 44px;
  flex: none;
  display: grid;
  place-items: center;
  border: 1px solid rgba(53, 242, 208, .55);
  border-radius: 12px 3px 12px 3px;
  background: linear-gradient(140deg, rgba(53, 242, 208, .16), transparent 70%);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
              width var(--t-fast) var(--ease), height var(--t-fast) var(--ease);
}
.brand:hover .brand__mark { background: var(--cyan); color: var(--ink); }
.brand__text { display: flex; flex-direction: column; gap: 1px; }
.brand__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.2;
  color: var(--paper);
}
.brand__line {
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--mute);
}

.header-statement {
  flex: 1 1 auto;
  max-width: 34ch;
  padding-left: 18px;
  border-left: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.5;
  color: var(--mute);
}

.header-tools { display: flex; align-items: center; gap: 12px; flex: none; }

.season-switch {
  display: flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(16, 36, 29, .7);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 9px 2px 9px 2px;
  color: var(--paper);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.nav-toggle:hover { border-color: rgba(53, 242, 208, .55); color: var(--cyan); }
.nav-toggle__bar {
  position: relative;
  width: 16px;
  height: 2px;
  background: var(--cyan);
  transition: background var(--t-fast) var(--ease);
}
.nav-toggle__bar::before,
.nav-toggle__bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--cyan);
  transition: transform var(--t-fast) var(--ease);
}
.nav-toggle__bar::before { top: -5px; }
.nav-toggle__bar::after { top: 5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::after { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__label { font-size: 12px; letter-spacing: .14em; }

.header-nav {
  background: linear-gradient(180deg, rgba(10, 26, 21, .9), rgba(5, 17, 13, .92));
}
.header-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-list { display: flex; flex-wrap: wrap; gap: clamp(6px, 1.8vw, 26px); }
.nav-link {
  position: relative;
  display: inline-block;
  padding: 14px 2px 16px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--mute);
  transition: color var(--t-fast) var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform var(--t-fast) var(--ease);
}
.nav-link:hover { color: var(--paper); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link[aria-current="page"] { color: var(--cyan); }
.nav-link[aria-current="page"]::after { transform: scaleX(1); }
.header-nav__note {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--slate);
}

.site-header.is-condensed .header-top__inner { min-height: 58px; padding-block: 7px; }
.site-header.is-condensed .header-statement { display: none; }
.site-header.is-condensed .season-switch { display: none; }
.site-header.is-condensed .brand__mark { width: 34px; height: 34px; font-size: 12px; }
.site-header.is-condensed .brand__name { font-size: 16px; }

/* ---------- 17. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(52px, 8vw, 118px);
  padding-block: clamp(34px, 4.6vw, 62px) 26px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-2), var(--ink) 72%);
  color: var(--paper);
}
.footer-ruler {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--cyan) 0 26px, transparent 26px 58px);
  opacity: .32;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(250px, 1fr) minmax(0, 2.2fr);
  gap: clamp(24px, 4vw, 64px);
}
.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}
.footer-brand__note {
  max-width: 34ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mute);
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 40px);
}
.footer-col__title {
  margin-bottom: 13px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--cyan);
}
.footer-col__list { display: flex; flex-direction: column; gap: 9px; }
.footer-link {
  font-size: 14px;
  color: var(--mute);
  transition: color var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}
.footer-link:hover { color: var(--cyan-soft); padding-left: 6px; }

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  margin-top: clamp(26px, 4vw, 46px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--slate);
}
.footer-contact { letter-spacing: .01em; }
.footer-legal {
  margin-left: auto;
  font-family: var(--font-mono);
  letter-spacing: .04em;
}
.to-top {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 8px 2px 8px 2px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mute);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.to-top:hover { color: var(--cyan); border-color: rgba(53, 242, 208, .5); }

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1080px) {
  .header-statement { display: none; }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 96px; }

  .nav-toggle { display: inline-flex; }
  .header-tools__cta { display: none; }
  .season-switch { display: none; }
  .header-top__inner { min-height: 64px; padding-block: 10px; }

  .header-nav {
    max-height: 0;
    overflow: hidden;
    transition: max-height 220ms var(--ease);
  }
  .site-header[data-open] .header-nav {
    max-height: min(72vh, 540px);
    overflow-y: auto;
    border-top: 1px solid var(--line);
  }
  .header-nav__inner {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: 6px 18px;
  }
  .nav-list { flex-direction: column; gap: 0; }
  .nav-link {
    display: block;
    padding: 15px 0;
    border-bottom: 1px solid rgba(23, 51, 42, .8);
    font-size: 16px;
  }
  .nav-link::after { display: none; }
  .nav-link[aria-current="page"] { color: var(--cyan); }
  .header-nav__note { display: none; }

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

@media (max-width: 640px) {
  body { font-size: 15.5px; }

  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-meta { flex-direction: column; align-items: flex-start; gap: 10px; }
  .footer-legal,
  .to-top { margin-left: 0; }
  .brand__line { letter-spacing: .08em; }
  .footer-ruler { opacity: .2; }
}

/* ---------- 19. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .panel:hover { transform: none; }
}