/* ==========================================================================
   球盟会赛事 · 共享站点样式  /assets/site.css
   墨绿夜场 + 炽焰橙 + 铜色刻度 · 赛场夜色与档案秩序
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 112px;
}
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩体系 */
  --ink-900: #0B241C;   /* 墨绿夜场 · 主背景 */
  --ink-800: #123328;   /* 深墨绿阶 · 卡片底 */
  --ink-700: #1E3A3F;   /* 深夜蓝灰 · 图表底 */
  --paper:   #E8EBE6;   /* 球场白线灰 · 正文 */
  --mid:     #9AA79E;   /* 中线灰 · 次级文字 */
  --flame:   #FF5A1F;   /* 炽焰橙 · 强调 */
  --flame-deep: #C43A0B;/* 炽橙暗阶 */
  --copper:  #C08A4E;   /* 金属铜 · 刻度序号 */
  --sand:    #F4EFE6;   /* 暖砂米 · 浅色呼吸口 */
  --gold:    #7A5A31;   /* 暗金描边 */

  --line-soft:   rgba(232, 235, 230, .14);
  --line-mid:    rgba(232, 235, 230, .24);
  --copper-soft: rgba(192, 138, 78, .45);
  --gold-soft:   rgba(122, 90, 49, .5);
  --flame-soft:  rgba(255, 90, 31, .16);

  /* 字体 */
  --font-display: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-num: 'JetBrains Mono', 'IBM Plex Mono', 'SFMono-Regular', ui-monospace, monospace;

  /* 形状 */
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-pill: 999px;

  /* 尺度 */
  --shell: 1240px;
  --gutter: clamp(16px, 4vw, 36px);
  --gap: clamp(16px, 2.2vw, 28px);
  --ease: cubic-bezier(.22, .61, .36, 1);
  --dur: .28s;
}

/* ---------- 3. 基础与中文排版 ---------- */
body {
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: .06em;
  color: var(--paper);
}
h1 { font-size: clamp(38px, 5.2vw, 68px); letter-spacing: .08em; }
h2 { font-size: clamp(26px, 3vw, 40px); }
h3 { font-size: clamp(20px, 2vw, 24px); letter-spacing: .04em; }
p { max-width: 78ch; }
strong, b { font-weight: 700; color: var(--sand); }
::selection { background: var(--flame); color: var(--ink-900); }

:focus-visible {
  outline: 2px solid var(--flame);
  outline-offset: 3px;
  border-radius: 6px;
}
:focus:not(:focus-visible) { outline: none; }

/* ---------- 4. 通用工具 ---------- */
.container {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.container-narrow {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}
.col-main { grid-column: 1 / span 7; min-width: 0; }
.col-side { grid-column: 9 / span 4; min-width: 0; }

.lead {
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.85;
  color: var(--paper);
  max-width: 760px;
}
.muted { color: var(--mid); }

.tick-rule {
  height: 14px;
  border-bottom: 1px solid var(--gold-soft);
  background-image: repeating-linear-gradient(90deg, var(--copper-soft) 0 1px, transparent 1px 18px);
  background-repeat: repeat-x;
  background-size: 18px 6px;
  background-position: 0 0;
}
.divider-slash {
  height: 1px;
  border: 0;
  margin: 0;
  background-image: repeating-linear-gradient(115deg, rgba(192, 138, 78, .5) 0 6px, transparent 6px 14px);
}

/* ---------- 5. 章节结构 ---------- */
.section { padding: clamp(56px, 8vw, 120px) 0; }
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px 20px;
  padding-bottom: 16px;
  margin-bottom: clamp(24px, 3vw, 44px);
  border-bottom: 1px solid var(--gold-soft);
}
.section-index {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--copper);
  line-height: 1;
}
.section-title {
  margin: 0;
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 900;
  letter-spacing: .06em;
  color: var(--paper);
  line-height: 1.15;
}
.section-note {
  margin-left: auto;
  max-width: 340px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mid);
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn-primary { background: var(--flame); color: var(--ink-900); }
.btn-primary:hover { background: var(--flame-deep); color: var(--sand); }
.btn-ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--line-mid);
}
.btn-ghost:hover { border-color: var(--copper); color: var(--sand); background: rgba(192, 138, 78, .12); }
.btn:hover { transform: translateY(-2px); }
.btn-sm { padding: 10px 18px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------- 7. 面包屑 ---------- */
.breadcrumbs { padding: 20px 0 4px; }
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .04em;
}
.breadcrumb-item { display: inline-flex; align-items: center; color: var(--mid); }
.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin: 0 10px;
  color: var(--gold);
}
.breadcrumb-link {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 235, 230, .25);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.breadcrumb-link:hover { color: var(--flame); border-bottom-color: var(--flame); }

/* ---------- 8. 资料卡与标签 ---------- */
.card {
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: clamp(18px, 2.4vw, 28px);
  transition: border-color var(--dur) var(--ease), border-radius var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.card:hover {
  border-color: var(--copper-soft);
  border-radius: var(--radius-md);
  background: #143A2D;
  transform: translateY(-2px);
}
.card-title {
  margin: 0 0 10px;
  font-size: clamp(18px, 1.6vw, 21px);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: .03em;
  color: var(--paper);
}
.card-summary {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mid);
  max-width: 72ch;
}
.card-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-mid);
  background: rgba(232, 235, 230, .06);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--paper);
  white-space: nowrap;
}
.tag-accent {
  border-color: rgba(255, 90, 31, .5);
  background: var(--flame-soft);
  color: var(--flame);
}
.tag-num {
  font-family: var(--font-num);
  border-color: var(--copper-soft);
  background: rgba(192, 138, 78, .12);
  color: var(--copper);
}

/* ---------- 9. 图片容器（页面阶段放置图片） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-soft);
  background: var(--ink-700);
  background-image:
    repeating-linear-gradient(45deg, rgba(232, 235, 230, .04) 0 1px, transparent 1px 9px);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}
.media-frame:hover img { transform: scale(1.03); }
.media-wide { aspect-ratio: 16 / 9; }
.media-tall { aspect-ratio: 3 / 4; }
.media-square { aspect-ratio: 1 / 1; }
.media-caption {
  margin-top: 10px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mid);
}

/* ---------- 10. 轮次轴 ---------- */
.round-rail {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-num);
}
.round-rail-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-left: 2px solid var(--gold-soft);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mid);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.round-rail-link:hover { color: var(--paper); border-left-color: var(--copper); }
.round-rail-link[aria-current="true"] {
  color: var(--flame);
  border-left-color: var(--flame);
  padding-left: 20px;
}

/* ---------- 11. 显现动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .42s var(--ease), transform .42s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 12. 顶部滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 90;
  background: rgba(232, 235, 230, .07);
  pointer-events: none;
}
.scroll-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--flame) 0%, var(--copper) 100%);
  transition: width .12s linear;
}

/* ---------- 13. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: clamp(14px, 3vw, 28px);
  top: -120px;
  z-index: 120;
  display: inline-block;
  padding: 12px 22px;
  background: var(--flame);
  color: var(--ink-900);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 0; }

/* ---------- 14. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  padding: clamp(10px, 1.6vw, 18px) clamp(14px, 3vw, 28px);
  background: transparent;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.site-header.is-condensed {
  background: rgba(11, 36, 28, .9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--gold-soft), 0 26px 50px -36px rgba(0, 0, 0, .95);
}

.header-shell {
  position: relative;
  max-width: var(--shell);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.4vw, 16px);
}

/* 品牌浮岛 */
.brand {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 20px 8px 8px;
  border-radius: var(--radius-pill);
  background: rgba(18, 51, 40, .92);
  border: 1px solid var(--line-soft);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.brand:hover { border-color: var(--copper-soft); background: rgba(18, 51, 40, 1); }
.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--flame);
  color: var(--ink-900);
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 900;
  letter-spacing: .12em;
  color: var(--paper);
}
.brand-sub {
  margin-top: 3px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--copper);
}

/* 悬浮胶囊导航 */
.nav-pill {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 auto;
  padding: 6px;
  border-radius: var(--radius-pill);
  background: rgba(18, 51, 40, .92);
  border: 1px solid var(--line-soft);
}
.nav-list { display: flex; align-items: center; gap: 2px; }
.nav-item { display: block; }
.nav-link {
  display: block;
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .03em;
  color: rgba(232, 235, 230, .82);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-link:hover { color: var(--paper); background: rgba(232, 235, 230, .09); }
.nav-link[aria-current="page"] {
  background: var(--paper);
  color: var(--ink-900);
  font-weight: 700;
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  background: var(--flame);
  color: var(--ink-900);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-cta:hover { background: var(--flame-deep); color: var(--sand); }

.header-meta { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.header-badge {
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: 1px dashed var(--copper-soft);
  background: rgba(11, 36, 28, .72);
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--copper);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 46px;
  height: 46px;
  padding: 0;
  border-radius: 50%;
  background: rgba(18, 51, 40, .95);
  border: 1px solid var(--line-mid);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--copper-soft); }
.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--paper);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), background var(--dur) var(--ease);
}
.site-header[data-open] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--flame); }
.site-header[data-open] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--flame); }

/* 平板 / 手机：导航收成向下弹出的胶囊面板 */
@media (max-width: 1000px) {
  .header-shell { justify-content: space-between; }
  .nav-toggle { display: flex; }
  .header-badge { display: none; }
  .brand { padding: 6px 16px 6px 6px; }
  .brand-mark { width: 32px; height: 32px; border-radius: 10px; font-size: 13px; }
  .brand-sub { font-size: 10px; }

  .nav-pill {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    margin: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 14px;
    border-radius: var(--radius-xl);
    background: rgba(11, 36, 28, .98);
    border: 1px solid var(--copper-soft);
    box-shadow: 0 34px 60px -30px rgba(0, 0, 0, .95);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s var(--ease);
  }
  .site-header[data-open] .nav-pill {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .nav-list { flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-link { padding: 13px 16px; font-size: 16px; border-radius: var(--radius-md); }
  .nav-cta { margin-top: 4px; padding: 14px 20px; font-size: 15px; }
}

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 120px);
  padding-top: clamp(48px, 7vw, 92px);
  background: var(--ink-900);
  border-top: 1px solid var(--gold-soft);
  color: var(--mid);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(45deg, rgba(232, 235, 230, .022) 0 1px, transparent 1px 12px);
}
.footer-stripe {
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--flame) 0%, var(--flame-deep) 30%, var(--copper) 62%, rgba(192, 138, 78, 0) 100%);
}
.footer-shell {
  position: relative;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(250px, 1fr) minmax(0, 2.1fr);
  gap: clamp(32px, 5vw, 72px);
  padding: clamp(36px, 5vw, 64px) 0;
}
.footer-brand { display: flex; flex-direction: column; align-items: flex-start; }
.footer-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 14px;
  border-radius: 14px;
  border: 1px solid var(--copper-soft);
  color: var(--copper);
  font-family: var(--font-num);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0;
}
.footer-brand-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: .14em;
  color: var(--paper);
}
.footer-brand-sub {
  margin-top: 6px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--copper);
}
.footer-brand-note {
  margin-top: 14px;
  max-width: 32ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mid);
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
}
.footer-col { min-width: 0; }
.footer-col-title {
  padding-bottom: 12px;
  margin: 0 0 16px;
  border-bottom: 1px solid var(--gold-soft);
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  line-height: 1.4;
  color: var(--paper);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-link {
  font-size: 15px;
  line-height: 1.6;
  color: var(--mid);
  text-decoration: none;
  word-break: break-word;
  transition: color var(--dur) var(--ease);
}
.footer-link:hover { color: var(--flame); }
.footer-lines { display: flex; flex-direction: column; gap: 10px; }
.footer-line { font-size: 14px; line-height: 1.7; color: var(--mid); }

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 20px 0 28px;
  border-top: 1px solid rgba(255, 90, 31, .45);
}
.footer-legal-text {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .06em;
  line-height: 1.7;
  color: var(--mid);
}

/* ---------- 16. 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 70;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  width: 56px;
  height: 56px;
  padding: 0;
  border-radius: 50%;
  background: rgba(18, 51, 40, .95);
  border: 1px solid var(--copper-soft);
  color: var(--paper);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.to-top[data-visible] { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { border-color: var(--flame); color: var(--flame); }
.to-top-icon { font-size: 15px; line-height: 1; }
.to-top-text {
  font-family: var(--font-num);
  font-size: 9px;
  letter-spacing: .14em;
  color: var(--copper);
}

/* ---------- 17. 响应式 ---------- */
@media (max-width: 940px) {
  .footer-top { grid-template-columns: 1fr; }
  .footer-brand-note { max-width: 46ch; }
}
@media (max-width: 900px) {
  .col-main, .col-side { grid-column: 1 / -1; }
}
@media (max-width: 700px) {
  .section-note { margin-left: 0; max-width: none; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .footer-cols { grid-template-columns: 1fr; gap: 30px; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
  .to-top { width: 50px; height: 50px; }
}

/* ---------- 18. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .btn:hover, .card:hover { transform: none; }
  .media-frame:hover img { transform: none; }
}