/* ==========================================================================
   天博赛场 · Shared Site Kit   /assets/site.css
   堆叠面板 · 精密网格 · 近单色 + 荧光青 / 暖橙
   ========================================================================== */

/* --- 1. Reset ------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }

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

body, h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

/* --- 2. Tokens ----------------------------------------------------------- */
:root {
  /* 品牌色 */
  --c-night:  #0B1F17;   /* 深夜球场绿 —— 主背景 */
  --c-locker: #12302A;   /* 更衣室绿 —— 面板底 */
  --c-pitch:  #1E4A3C;   /* 草地中绿 —— 分区 / 联赛标签 */
  --c-grid:   #24413A;   /* 精密网格线 */
  --c-cyan:   #35E8C8;   /* 荧光青 —— 唯一强调色 */
  --c-orange: #FF8A3D;   /* 暖橙 —— 比分与提醒 */
  --c-blue:   #0E1B2A;   /* 深墨蓝 —— 页脚深区 */
  --c-mist:   #9FB3AE;   /* 雾灰 —— 次级文字 */
  --c-paper:  #EAF4F0;   /* 纸白 —— 主文字 */

  /* 派生 */
  --c-cyan-soft:  rgba(53, 232, 200, 0.15);
  --c-cyan-faint: rgba(53, 232, 200, 0.06);
  --c-cyan-line:  rgba(53, 232, 200, 0.45);
  --c-orange-soft: rgba(255, 138, 61, 0.14);
  --c-orange-line: rgba(255, 138, 61, 0.50);
  --c-hairline:   rgba(36, 65, 58, 0.78);
  --c-hairline-soft: rgba(36, 65, 58, 0.52);

  /* 间距刻度 8 / 16 / 24 / 40 / 72 */
  --s-1: 8px;
  --s-2: 16px;
  --s-3: 24px;
  --s-4: 40px;
  --s-5: 72px;

  /* 宽度 */
  --shell: 1200px;
  --prose: 760px;

  /* 字体 */
  --f-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
            "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --f-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
            "Liberation Mono", "Courier New", monospace;

  /* 动效 */
  --dur-fast: 120ms;
  --dur-mid:  180ms;
  --dur-slow: 220ms;
  --ease: cubic-bezier(0.22, 0.68, 0.32, 1);

  /* 形状 */
  --pill: 999px;
  --r-0: 0;
  --r-1: 2px;
}

/* --- 3. Base ------------------------------------------------------------- */
body {
  position: relative;
  z-index: 0;
  min-height: 100vh;
  font-family: var(--f-sans);
  font-size: 17px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  color: var(--c-paper);
  background-color: var(--c-night);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 精密网格：全站底噪 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(36, 65, 58, 0.34) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 65, 58, 0.34) 1px, transparent 1px);
  background-size: 64px 64px;
}

h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-size: clamp(34px, 5.2vw, 58px); font-weight: 800; line-height: 1.12; letter-spacing: -0.02em; }
h2 { font-size: clamp(26px, 3.4vw, 34px); }
h3 { font-size: 21px; }
h4 { font-size: 17px; }

p { max-width: 100%; }

strong, b { font-weight: 700; }

:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
  border-radius: var(--r-1);
}

#main-content { scroll-margin-top: 132px; }

/* --- 4. 工具类 ----------------------------------------------------------- */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.mono, .num {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}
.num { font-weight: 700; font-size: 1.08em; }

.link-inline {
  color: var(--c-cyan);
  border-bottom: 1px solid var(--c-cyan-line);
  transition: color var(--dur-mid) var(--ease), border-color var(--dur-mid) var(--ease);
}
.link-inline:hover { color: #74f4de; border-bottom-color: var(--c-cyan); }

.container, .footer-shell, .nav-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--s-3);
}

.prose { max-width: var(--prose); }

.stack > * + * { margin-top: var(--s-2); }

/* --- 5. 跳过链接 --------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 12px 20px;
  background: var(--c-cyan);
  color: var(--c-night);
  font-weight: 700;
  font-size: 15px;
  border-radius: 0 0 var(--r-1) 0;
}
.skip-link:focus { left: 0; }

/* --- 6. 头部命令栏 ------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(11, 31, 23, 0.86);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--c-hairline);
  transition: background var(--dur-slow) var(--ease), border-color var(--dur-slow) var(--ease);
}
.site-header[data-scrolled] {
  background: rgba(11, 31, 23, 0.97);
  border-bottom-color: rgba(53, 232, 200, 0.28);
}

.nav-top {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  min-height: 64px;
  padding-block: 10px;
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
  min-width: 0;
}
.brand-mark {
  flex: none;
  width: 10px;
  height: 10px;
  background: var(--c-cyan);
  box-shadow: 0 0 0 4px rgba(53, 232, 200, 0.12);
  transition: box-shadow var(--dur-mid) var(--ease);
}
.brand:hover .brand-mark { box-shadow: 0 0 0 6px rgba(53, 232, 200, 0.18); }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-name {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.25;
}
.brand-tagline {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--c-mist);
  line-height: 1.35;
}

/* 更新状态条 */
.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--c-mist);
  white-space: nowrap;
}
.nav-status-dot {
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--c-cyan);
}

/* 菜单按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--c-grid);
  border-radius: var(--pill);
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-paper);
  transition: border-color var(--dur-mid) var(--ease), color var(--dur-mid) var(--ease),
              background var(--dur-mid) var(--ease);
}
.nav-toggle:hover { border-color: var(--c-cyan); color: var(--c-cyan); }
.nav-toggle:active { transform: translateY(1px); }
.nav-toggle-icon {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: background var(--dur-mid) var(--ease);
}
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur-mid) var(--ease);
}
.nav-toggle-icon::before { top: -5px; }
.nav-toggle-icon::after { top: 5px; }
.nav-toggle[aria-expanded="true"] { border-color: var(--c-cyan); color: var(--c-cyan); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after { transform: translateY(-5px) rotate(-45deg); }

/* 栏目带 */
.site-nav { border-top: 1px solid var(--c-hairline-soft); }
.nav-list { display: flex; flex-wrap: wrap; align-items: stretch; }
.nav-item { display: flex; }
.nav-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 13px 16px 11px;
  border-bottom: 2px solid transparent;
  color: var(--c-mist);
  transition: color var(--dur-mid) var(--ease), background var(--dur-mid) var(--ease),
              border-color var(--dur-mid) var(--ease);
}
.nav-link:hover {
  color: var(--c-paper);
  background: var(--c-cyan-faint);
  border-bottom-color: var(--c-cyan-line);
}
.nav-index {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  opacity: 0.4;
  transition: opacity var(--dur-mid) var(--ease), color var(--dur-mid) var(--ease);
}
.nav-link:hover .nav-index,
.nav-link[aria-current="page"] .nav-index { opacity: 1; color: var(--c-cyan); }
.nav-label { font-size: 14.5px; font-weight: 600; letter-spacing: 0.02em; }
.nav-link[aria-current="page"] {
  color: var(--c-paper);
  border-bottom-color: var(--c-cyan);
  background: var(--c-cyan-soft);
}

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  display: block;
  height: 2px;
  background: rgba(53, 232, 200, 0.08);
  pointer-events: none;
}
.scroll-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--c-cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform var(--dur-fast) linear;
}

/* --- 7. 页脚 ------------------------------------------------------------- */
.site-footer {
  margin-top: var(--s-5);
  background: var(--c-blue);
  border-top: 1px solid var(--c-hairline);
  color: var(--c-paper);
}
.footer-shell { padding-block: var(--s-5) var(--s-4); }

.footer-top {
  display: grid;
  gap: var(--s-4);
}

.footer-brand { min-width: 0; }
.footer-logo {
  display: inline-block;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.08em;
  transition: color var(--dur-mid) var(--ease);
}
.footer-logo:hover { color: var(--c-cyan); }
.footer-tagline {
  margin-top: 6px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}
.footer-meta {
  margin-top: var(--s-2);
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-mist);
}

.footer-columns {
  display: grid;
  gap: var(--s-3);
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}
.footer-col { min-width: 0; }
.footer-col-title {
  font-family: var(--f-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
  padding-bottom: 10px;
  margin-bottom: var(--s-2);
  border-bottom: 1px solid var(--c-hairline);
}
.footer-links li + li { margin-top: 10px; }
.footer-links a {
  font-size: 15px;
  color: var(--c-paper);
  border-bottom: 1px solid transparent;
  transition: color var(--dur-mid) var(--ease), border-color var(--dur-mid) var(--ease);
}
.footer-links a:hover { color: var(--c-cyan); border-bottom-color: var(--c-cyan-line); }
.footer-contact li {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-mist);
}

.footer-legal {
  margin-top: var(--s-4);
  padding-top: var(--s-3);
  border-top: 1px solid var(--c-hairline);
  display: grid;
  gap: 10px;
}
.footer-legal-line {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}
.footer-update {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-mist);
  max-width: var(--prose);
}
.footer-year {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(159, 179, 174, 0.72);
}

/* --- 8. 通用组件 --------------------------------------------------------- */
/* 面包屑 */
.breadcrumb {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding-top: var(--s-3);
}
.breadcrumb-list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumb-item { display: inline-flex; align-items: center; gap: 8px; color: var(--c-mist); }
.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: rgba(159, 179, 174, 0.45);
}
.breadcrumb a {
  border-bottom: 1px solid transparent;
  transition: color var(--dur-mid) var(--ease), border-color var(--dur-mid) var(--ease);
}
.breadcrumb a:hover { color: var(--c-cyan); border-bottom-color: var(--c-cyan-line); }
.breadcrumb [aria-current="page"] { color: var(--c-paper); }

/* 章节 */
.section {
  padding-block: var(--s-5);
  border-top: 1px solid var(--c-hairline);
}
.section--flush { border-top: 0; }
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--s-2);
  padding-bottom: var(--s-2);
  margin-bottom: var(--s-4);
  border-bottom: 1px solid var(--c-hairline);
}
.eyebrow {
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
}
.lede {
  font-size: clamp(17px, 1.9vw, 20px);
  line-height: 1.75;
  color: var(--c-mist);
  max-width: var(--prose);
}

/* 面板 */
.panel {
  position: relative;
  display: block;
  padding: var(--s-4) var(--s-3);
  background: var(--c-locker);
  border: 1px solid var(--c-grid);
  border-radius: var(--r-0);
  transition: border-color var(--dur-mid) var(--ease), background var(--dur-mid) var(--ease),
              transform var(--dur-mid) var(--ease);
}
.panel:hover { border-color: var(--c-cyan-line); background: #14352D; }
a.panel:hover, button.panel:hover { transform: translateY(-2px); }
.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-2);
  margin-bottom: var(--s-2);
}
.panel-index {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-mist);
}
.panel-title {
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 700;
  line-height: 1.3;
}
.panel-note {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-mist);
}
.panel-foot {
  margin-top: var(--s-3);
  padding-top: var(--s-2);
  border-top: 1px solid var(--c-hairline);
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid transparent;
  border-radius: var(--r-1);
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.7;
  white-space: nowrap;
}
.tag-live { background: var(--c-cyan); border-color: var(--c-cyan); color: var(--c-night); }
.tag-league { background: var(--c-pitch); border-color: var(--c-pitch); color: var(--c-paper); }
.tag-alert {
  background: var(--c-orange-soft);
  border-color: var(--c-orange-line);
  color: var(--c-orange);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: var(--pill);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.4;
  cursor: pointer;
  transition: background var(--dur-mid) var(--ease), color var(--dur-mid) var(--ease),
              border-color var(--dur-mid) var(--ease), box-shadow var(--dur-mid) var(--ease),
              transform var(--dur-fast) var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  color: var(--c-night);
}
.btn-primary:hover {
  background: #58f0d6;
  border-color: #58f0d6;
  box-shadow: 0 0 0 3px rgba(53, 232, 200, 0.16);
}
.btn-ghost {
  background: transparent;
  border-color: var(--c-grid);
  color: var(--c-paper);
}
.btn-ghost:hover { border-color: var(--c-cyan); color: var(--c-cyan); }
.btn-sm { padding: 9px 18px; font-size: 13.5px; }

/* 图片容器（页面阶段放图） */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--c-locker);
  border: 1px solid var(--c-grid);
  border-radius: var(--r-0);
}
.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(53, 232, 200, 0.10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(53, 232, 200, 0.10) 1px, transparent 1px),
    radial-gradient(120% 90% at 20% 0%, rgba(53, 232, 200, 0.14), transparent 62%);
  background-size: 32px 32px, 32px 32px, 100% 100%;
}
.media-frame img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame-caption {
  display: block;
  margin-top: 10px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}

/* 12 列基准栅格 */
.grid-12 {
  display: grid;
  gap: var(--s-3);
  grid-template-columns: repeat(12, minmax(0, 1fr));
}
.col-4  { grid-column: span 4; }
.col-6  { grid-column: span 6; }
.col-8  { grid-column: span 8; }
.col-12 { grid-column: span 12; }

/* 数据格 */
.stat-row {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  background: var(--c-hairline);
  border: 1px solid var(--c-hairline);
}
.stat-cell {
  padding: var(--s-2) var(--s-3);
  background: var(--c-locker);
}
.stat-value {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--c-cyan);
  line-height: 1.3;
}
.stat-label {
  margin-top: 2px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-mist);
}

/* --- 9. 显现 ------------------------------------------------------------- */
[data-reveal] {
  --reveal-delay: 0ms;
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 420ms var(--ease) var(--reveal-delay),
    transform 420ms var(--ease) var(--reveal-delay);
}
[data-reveal][data-revealed] { opacity: 1; transform: none; }

/* --- 10. 响应式 ---------------------------------------------------------- */
@media (max-width: 899px) {
  .nav-status { display: none; }
  .nav-cta { display: none; }

  .site-nav {
    display: none;
    margin-inline: calc(var(--s-3) * -1);
    padding-inline: var(--s-3);
    background: var(--c-locker);
    border-top: 1px solid var(--c-grid);
  }
  .site-nav[data-open] { display: block; }

  .nav-list { flex-direction: column; padding-block: 6px; }
  .nav-item { width: 100%; }
  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 14px 10px;
    border-bottom: 1px solid var(--c-hairline-soft);
    border-left: 2px solid transparent;
  }
  .nav-link:hover { border-bottom-color: var(--c-hairline-soft); }
  .nav-link[aria-current="page"] {
    border-bottom-color: var(--c-hairline-soft);
    border-left-color: var(--c-cyan);
    background: var(--c-cyan-soft);
  }
  .nav-index { opacity: 0.7; }

  .footer-shell { padding-block: var(--s-4) var(--s-3); }
  .section { padding-block: var(--s-4); }
}

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .footer-top { grid-template-columns: minmax(240px, 1fr) 2.2fr; align-items: start; }
}

@media (max-width: 760px) {
  .col-4, .col-6, .col-8 { grid-column: span 12; }
  .grid-12 { gap: var(--s-2); }
}

@media (max-width: 520px) {
  :root { --s-5: 56px; }
  .brand-tagline { display: none; }
  .brand-name { font-size: 17.5px; }
  .panel { padding: var(--s-3) var(--s-2); }
  .stat-value { font-size: 22px; }
}

/* --- 11. 动效降级 -------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .scroll-progress-bar { transition: none; }
}