/* ==========================================================================
   星空体育站 — 共享样式 /assets/site.css
   夜间球场档案：深空蓝底、信号橙焦点、裁判牌红黄只做判罚语义
   ========================================================================== */

:root {
  --ink: #0B1B3A;
  --ink-deep: #081428;
  --surface: #0F2547;
  --line: #1C3E70;
  --accent: #FF6B2C;
  --accent-soft: #FF824F;
  --card-red: #E63946;
  --card-yellow: #FFD166;
  --paper: #F4F7FB;
  --muted: #A9BBD6;
  --index: #7C8FAE;

  --font-display: "Barlow Condensed", "Oswald", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", 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", "Source Han Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --maxw: 1400px;
  --gutter: clamp(1.05rem, 4.4vw, 4rem);
  --cut: 14px;
  --radius: 2px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

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

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

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

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

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

button { font: inherit; color: inherit; }

/* ---------- 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.01em;
}

h1 { font-size: clamp(2rem, 5.2vw, 4.5rem); }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.5rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.6rem); }

p + p { margin-top: 1.2em; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-soft); }

strong { color: var(--paper); font-weight: 700; }

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

[id] { scroll-margin-top: 104px; }

/* ---------- 工具类 ---------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.stack > * + * { margin-top: 1.1em; }

.rule-slash {
  height: 1px;
  border: 0;
  margin-block: clamp(1.6rem, 4vw, 3rem);
  background-image: repeating-linear-gradient(90deg, var(--line) 0 14px, transparent 14px 26px);
}

.skip-link {
  position: fixed;
  top: -120px;
  left: 1rem;
  z-index: 200;
  padding: .6rem 1rem;
  background-color: var(--accent);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .12em;
  border-radius: 0 0 var(--radius) var(--radius);
  transition: top .2s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { top: 0; color: var(--ink); }

/* ---------- 页头：框架式导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: var(--ink);
  border-bottom: 1px solid var(--line);
  color: var(--paper);
}

.site-header__frame {
  position: relative;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: .6rem var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  grid-template-areas: "brand tools toggle";
  align-items: center;
  gap: .55rem .7rem;
  transition: padding .28s var(--ease);
}

.site-header[data-scrolled="true"] .site-header__frame { padding-block: .38rem; }
.site-header[data-scrolled="true"] .brand__domain { opacity: 0; }

.brand {
  grid-area: brand;
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: var(--paper);
  text-decoration: none;
  min-width: 0;
}

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

.brand__mark {
  flex: none;
  width: 16px;
  height: 16px;
  background-color: var(--accent);
  clip-path: polygon(0 0, 100% 0, 100% 46%, 46% 100%, 0 100%);
}

.brand__text { display: block; min-width: 0; }

.brand__name {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: .04em;
  line-height: 1.2;
  white-space: nowrap;
}

.brand__domain {
  display: none;
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .1em;
  color: var(--index);
  line-height: 1.5;
  transition: opacity .28s var(--ease);
}

@media (min-width: 720px) {
  .brand__domain { display: block; }
}

/* 移动端导航按钮 */
.nav-toggle {
  grid-area: toggle;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .44rem .6rem;
  background-color: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  cursor: pointer;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

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

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 14px;
  height: 10px;
}

.nav-toggle__bars span {
  display: block;
  height: 1px;
  width: 100%;
  background-color: var(--accent);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child { transform: translateY(2.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child { transform: translateY(-2.5px) rotate(-45deg); }

/* 导航本体（移动端：横向可滑标签带） */
.site-nav {
  grid-area: nav;
  position: absolute;
  top: 100%;
  right: 0;
  left: 0;
  padding: .8rem var(--gutter) 1rem;
  background-color: var(--surface);
  border-bottom: 1px solid var(--line);
  visibility: hidden;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s linear;
}

.site-nav[data-open="true"] {
  visibility: visible;
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.site-nav__list {
  display: flex;
  gap: .4rem;
  overflow-x: auto;
  padding-bottom: .35rem;
  -webkit-overflow-scrolling: touch;
}

.site-nav__item { flex: none; }

.site-nav__link {
  display: inline-block;
  white-space: nowrap;
  padding: .42rem .78rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: .85rem;
  letter-spacing: .02em;
  text-decoration: none;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.site-nav__link:hover {
  color: var(--paper);
  border-color: var(--accent);
  background-color: rgba(255, 107, 44, .12);
}

.site-nav__link[aria-current="page"] {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--ink);
  font-weight: 700;
}

/* 头部右侧工具区 */
.header-tools {
  grid-area: tools;
  display: flex;
  align-items: center;
  gap: .75rem;
  justify-self: end;
}

.header-tools__note {
  display: none;
  max-width: 15ch;
  font-family: var(--font-mono);
  font-size: .64rem;
  line-height: 1.6;
  letter-spacing: .1em;
  color: var(--index);
}

@media (min-width: 1080px) {
  .header-tools__note { display: block; }
}

/* 滚动进度 */
.scroll-progress {
  height: 2px;
  background-color: rgba(28, 62, 112, .5);
  overflow: hidden;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .12s linear;
}

/* 桌面：框架式横向导航 */
@media (min-width: 900px) {
  .site-header { overflow: hidden; }

  .site-header__frame {
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "brand nav tools";
    gap: clamp(1rem, 3vw, 2.6rem);
    padding-block: .75rem;
  }

  .nav-toggle { display: none; }

  .site-nav {
    position: relative;
    inset: auto;
    justify-self: center;
    padding: .42rem clamp(.9rem, 2vw, 1.6rem);
    background-color: transparent;
    border: 1px solid var(--line);
    visibility: visible;
    opacity: 1;
    transform: none;
    pointer-events: auto;
    transition: none;
  }

  .site-nav::before,
  .site-nav::after {
    content: "";
    position: absolute;
    height: 1px;
    width: 100vw;
    background-color: var(--line);
  }

  .site-nav::before { top: 0; right: calc(100% - 1px); }
  .site-nav::after { bottom: 0; left: calc(100% - 1px); }

  .site-nav__list {
    gap: clamp(.4rem, 1.4vw, 1.5rem);
    overflow: visible;
    padding-bottom: 0;
  }

  .site-nav__link {
    position: relative;
    padding: .3rem .05rem;
    border: 0;
    border-radius: 0;
    background-color: transparent;
    color: var(--muted);
    font-size: .92rem;
  }

  .site-nav__link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -3px;
    height: 2px;
    background-color: var(--accent);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform .18s var(--ease);
  }

  .site-nav__link:hover {
    background-color: transparent;
    color: var(--paper);
  }

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

  .site-nav__link[aria-current="page"] {
    background-color: transparent;
    color: var(--paper);
    font-weight: 700;
  }

  .site-nav__link[aria-current="page"]::after { transform: scaleX(1); }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .62rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: transparent;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

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

.btn--accent {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--ink);
  font-weight: 700;
}

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

.btn--ghost { color: var(--muted); }
.btn--ghost:hover { color: var(--accent); }

.btn--sm {
  padding: .42rem .68rem;
  font-size: .68rem;
  letter-spacing: .08em;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background-color: var(--ink-deep);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer__inner {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(2.4rem, 6vw, 4.5rem) var(--gutter) clamp(1.6rem, 3vw, 2.6rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 3.5vw, 2.6rem);
}

.site-footer__brand { min-width: 0; }

.site-footer__tagline {
  margin-top: .9rem;
  max-width: 30ch;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--muted);
}

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

.footer-col__title {
  margin-bottom: .85rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 400;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--index);
}

.footer-col__list { display: grid; gap: .5rem; }

.footer-col__link {
  display: inline-block;
  color: var(--muted);
  font-size: .92rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.footer-col__link:hover {
  color: var(--paper);
  border-bottom-color: var(--accent);
}

.contact-list { display: grid; gap: .7rem; }

.contact-list__row { display: grid; gap: .1rem; }

.contact-list__term {
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .14em;
  color: var(--index);
}

.contact-list__desc {
  margin: 0;
  font-size: .88rem;
  line-height: 1.7;
  color: var(--muted);
  word-break: break-word;
}

.site-footer__base {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 1rem var(--gutter) 1.6rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .6rem 1.6rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--index);
}

.site-footer__note { margin: 0; }
.site-footer__legal { margin: 0; }

@media (min-width: 640px) {
  .site-footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer__brand { grid-column: 1 / -1; }
}

@media (min-width: 1000px) {
  .site-footer__inner {
    grid-template-columns: 1.5fr repeat(4, minmax(0, 1fr));
    gap: clamp(1.5rem, 2.4vw, 2.4rem);
  }
  .site-footer__brand { grid-column: auto; }
}

/* ---------- 版心与章节 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow { max-width: 820px; }

.section { padding-block: clamp(2.4rem, 6vw, 5rem); }

.section__head {
  display: grid;
  gap: .45rem;
  margin-bottom: clamp(1.5rem, 3.2vw, 2.6rem);
}

.section__eyebrow {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--index);
}

.chapter-mark {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.6rem, 7vw, 4.5rem);
  line-height: .9;
  letter-spacing: -.04em;
  color: var(--accent);
}

.section__title { color: var(--paper); }

.section__note {
  max-width: 38ch;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--muted);
}

.lede {
  max-width: 34ch;
  font-size: clamp(1.02rem, 1.6vw, 1.18rem);
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 2rem);
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.grid > * { grid-column: 1 / -1; }

@media (min-width: 900px) {
  .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; }
}

/* ---------- 面包屑 ---------- */
.breadcrumbs {
  padding-block: .85rem;
  border-bottom: 1px solid var(--line);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--index);
}

.breadcrumbs__item { display: flex; align-items: center; gap: .45rem; }

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

.breadcrumbs__link { color: var(--muted); text-decoration: none; }
.breadcrumbs__link:hover { color: var(--accent); }

/* ---------- 标签系统 ---------- */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .34rem .62rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  line-height: 1.4;
  cursor: pointer;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.tag:hover { color: var(--paper); border-color: var(--accent); }

.tag.is-active,
.tag[aria-pressed="true"] {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--ink);
  font-weight: 700;
}

.tag[disabled],
.tag[aria-disabled="true"] {
  color: var(--index);
  border-color: rgba(124, 143, 174, .4);
  background-color: transparent;
  cursor: not-allowed;
}

.tag--red {
  border-color: var(--card-red);
  background-color: rgba(230, 57, 70, .14);
  color: #FFD9DC;
}

.tag--yellow {
  border-color: var(--card-yellow);
  background-color: rgba(255, 209, 102, .14);
  color: #FFEDBE;
}

/* ---------- 档案卡 ---------- */
.archive-card {
  position: relative;
  padding: 1.15rem 1.3rem 1.1rem;
  background-color: var(--surface);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.archive-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 2px;
  background-color: var(--accent);
}

.archive-card__label {
  display: block;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--index);
}

.archive-card__title {
  margin-top: .4rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}

.archive-card__data {
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: .9rem;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.archive-card__code {
  display: block;
  margin-top: .9rem;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .14em;
  color: var(--index);
}

/* ---------- 数据表 ---------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .93rem;
}

.data-table caption {
  padding-bottom: .8rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-align: left;
  color: var(--index);
}

.data-table th {
  padding: .7rem .6rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 400;
  letter-spacing: .12em;
  text-align: left;
  color: var(--index);
}

.data-table td {
  padding: .72rem .6rem;
  border-bottom: 1px solid rgba(28, 62, 112, .55);
  color: var(--paper);
}

.data-table tbody tr:nth-child(even) { background-color: rgba(15, 37, 71, .6); }

.data-table__num {
  font-family: var(--font-mono);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ---------- 可展开组 ---------- */
.expander { border-bottom: 1px solid var(--line); }

.expander__item { border-top: 1px solid var(--line); }

.expander__item + .expander__item { border-top: 0; }

.expander__trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.05rem .1rem;
  background-color: transparent;
  border: 0;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 1.02rem;
  text-align: left;
  cursor: pointer;
  transition: color .18s var(--ease);
}

.expander__trigger:hover { color: var(--accent); }

.expander__label { flex: 1 1 auto; }

.expander__icon {
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: .55rem;
  border-right: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  transform: rotate(45deg);
  transition: transform .18s var(--ease);
}

.expander__trigger[aria-expanded="true"] .expander__icon { transform: rotate(135deg); }

.expander__panel {
  padding: 0 .1rem 1.25rem;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--muted);
}

.expander__panel[hidden] { display: none; }

/* ---------- 图片容器（页面阶段放置占位） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: var(--surface);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-color: rgba(11, 27, 58, .12);
  pointer-events: none;
}

.media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__badge {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: .3rem .6rem;
  background-color: rgba(11, 27, 58, .82);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .14em;
}

.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

/* ---------- 右侧竖向索引刻度 ---------- */
.index-rail {
  display: none;
  position: fixed;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 40;
  flex-direction: column;
  gap: .55rem;
}

.index-rail__item {
  display: block;
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .12em;
  color: var(--index);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.index-rail__item:hover,
.index-rail__item[aria-current="true"] { color: var(--accent); }

@media (min-width: 1200px) {
  .index-rail { display: flex; }
}

/* ---------- 进入动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .42s var(--ease), transform .42s var(--ease);
}

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

/* ---------- 降低动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

  [data-reveal] { opacity: 1; transform: none; }
  .site-nav { transform: none; }
}