/* ================================================
   天博体育 全站共享样式 /assets/site.css
   创意方向：纵向叙事长卷 + 斜切速度几何 + 电光蓝橙金
   ================================================ */

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

/* ---------- 2. 变量 ---------- */
:root {
  --tb-bg: #0A0E1A;
  --tb-bg-card: #111726;
  --tb-bg-panel: #1A2233;
  --tb-blue: #00D4FF;
  --tb-blue-deep: #0066FF;
  --tb-orange: #FF6B00;
  --tb-amber: #FFB800;
  --tb-gold: #FFC857;
  --tb-text: #F0F4FF;
  --tb-text-dim: #8A94A8;
  --tb-border-strong: #2A3A5A;
  --tb-border-fine: #1C2A45;
  --tb-grad-main: linear-gradient(135deg, #00D4FF, #0066FF);
  --tb-grad-accent: linear-gradient(135deg, #FF6B00, #FFB800);
  --tb-shadow: 8px 8px 0 rgba(0, 0, 0, 0.38);
  --tb-shadow-sm: 4px 4px 0 rgba(0, 0, 0, 0.3);
  --tb-font-head: "Oswald", "Barlow Condensed", "Arial Narrow", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --tb-font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --tb-font-data: "DIN Alternate", "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  --tb-container: 1200px;
  --tb-header-h: 64px;
}

/* ---------- 3. 全局基础 ---------- */
html:focus-within { scroll-behavior: smooth; }

body {
  background: var(--tb-bg);
  color: var(--tb-text);
  font-family: var(--tb-font-body);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { display: block; flex: 1 0 auto; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--tb-font-head);
  font-weight: 900;
  line-height: 1.15;
  color: var(--tb-text);
  letter-spacing: 0.01em;
}

::selection { background: var(--tb-blue); color: #02121F; }

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

.tb-container {
  width: min(var(--tb-container), calc(100% - 32px));
  margin-inline: auto;
}

@media (min-width: 768px) {
  .tb-container { width: min(var(--tb-container), calc(100% - 48px)); }
}

/* ---------- 4. 跳转链接 ---------- */
.tb-skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 9999;
  padding: 10px 20px;
  background: var(--tb-blue);
  color: #02121F;
  font-weight: 800;
  font-size: 14px;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  transition: top 0.25s ease-out;
}
.tb-skip-link:focus-visible { top: 16px; }

/* ---------- 5. 顶栏 ---------- */
.tb-topbar {
  background: #0C111E;
  border-bottom: 1px solid var(--tb-border-fine);
}
.tb-topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 36px;
}
.tb-topbar__label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--tb-text-dim);
  white-space: nowrap;
}
.tb-topbar__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}
.tb-topbar__link {
  display: inline-block;
  padding: 3px 14px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #1A0B00;
  background: var(--tb-grad-accent);
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
  transition: filter 0.2s ease-out, transform 0.2s ease-out;
}
.tb-topbar__link:hover {
  filter: brightness(1.12);
  transform: translateX(2px);
}

/* ---------- 6. 主导航 ---------- */
.tb-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 14, 26, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 3px solid var(--tb-border-strong);
}
.tb-header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--tb-header-h);
  position: relative;
}
.tb-progress {
  position: absolute;
  bottom: -3px;
  left: 0;
  height: 3px;
  width: 100%;
  background: var(--tb-grad-main);
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: 2;
}

/* 品牌 */
.tb-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.tb-brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--tb-grad-main);
  color: #fff;
  font-family: var(--tb-font-head);
  font-weight: 900;
  font-size: 22px;
  line-height: 1;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  box-shadow: 4px 4px 0 rgba(0, 212, 255, 0.25);
  transition: transform 0.2s ease-out;
}
.tb-brand:hover .tb-brand__mark { transform: translateX(2px); }
.tb-brand__mark--sm { width: 38px; height: 38px; font-size: 18px; clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%); }
.tb-brand__text { display: flex; flex-direction: column; }
.tb-brand__title {
  font-family: var(--tb-font-head);
  font-size: 22px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.02em;
}
.tb-brand__sub {
  margin-top: 3px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--tb-text-dim);
  white-space: nowrap;
}

/* 移动端按钮 */
.tb-nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 10px 10px;
  background: var(--tb-bg-card);
  border: 1px solid var(--tb-border-strong);
  transition: border-color 0.2s ease-out;
}
.tb-nav-toggle:hover { border-color: var(--tb-blue); }
.tb-nav-toggle__bar {
  width: 22px;
  height: 2px;
  background: var(--tb-blue);
  transition: transform 0.25s ease-out, opacity 0.25s ease-out;
}
.tb-nav-toggle__text {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--tb-text-dim);
}
.tb-nav-toggle[aria-expanded="true"] .tb-nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.tb-nav-toggle[aria-expanded="true"] .tb-nav-toggle__bar:nth-child(2) { opacity: 0; }
.tb-nav-toggle[aria-expanded="true"] .tb-nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 导航 */
.tb-nav__list { display: flex; align-items: center; gap: 2px; }
.tb-nav__item { margin: 0; }
.tb-nav__link {
  display: block;
  padding: 10px 14px;
  font-family: var(--tb-font-head);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--tb-text-dim);
  background: transparent;
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
  transition: color 0.2s ease-out, background 0.2s ease-out, box-shadow 0.2s ease-out;
}
.tb-nav__link:hover {
  color: var(--tb-text);
  background: var(--tb-bg-panel);
}
.tb-nav__link[aria-current="page"] {
  color: var(--tb-blue);
  background: rgba(0, 212, 255, 0.1);
  box-shadow: inset 0 -3px 0 var(--tb-blue);
}

/* ---------- 7. 比分速览 ---------- */
.tb-ticker {
  position: relative;
  background: var(--tb-bg-card);
  border-bottom: 1px solid var(--tb-border-fine);
  overflow: hidden;
}
.tb-ticker::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 56px;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--tb-bg-card));
  pointer-events: none;
  z-index: 1;
}
.tb-ticker__track {
  display: flex;
  width: max-content;
  min-height: 40px;
  animation: tbTicker 42s linear infinite;
}
.tb-ticker__group {
  display: flex;
  align-items: center;
  gap: 44px;
  padding-right: 44px;
}
.tb-ticker__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--tb-text-dim);
  white-space: nowrap;
}
.tb-ticker__league {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--tb-orange);
  background: rgba(255, 107, 0, 0.12);
  border: 1px solid rgba(255, 107, 0, 0.4);
  padding: 1px 6px;
}
.tb-ticker__score {
  font-family: var(--tb-font-data);
  font-weight: 700;
  font-size: 14px;
  color: var(--tb-text);
}
.tb-ticker__status {
  font-size: 11px;
  font-weight: 700;
  color: var(--tb-blue);
  letter-spacing: 0.06em;
}
.tb-ticker__close {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(10, 14, 26, 0.72);
  color: var(--tb-text-dim);
  font-size: 22px;
  line-height: 1;
  border-left: 1px solid var(--tb-border-fine);
  transition: color 0.2s ease-out;
}
.tb-ticker__close:hover { color: var(--tb-blue); }
.tb-ticker[data-ticker-hidden] { display: none; }

@keyframes tbTicker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 8. 页脚 ---------- */
.tb-footer {
  background: #070B14;
  border-top: 4px solid var(--tb-border-strong);
  flex-shrink: 0;
}
.tb-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 0.8fr;
  gap: 48px;
  padding: 56px 0;
}
.tb-footer__col { display: flex; flex-direction: column; }
.tb-footer__col--brand { gap: 18px; }
.tb-footer__brand { display: inline-flex; align-items: center; gap: 12px; }
.tb-footer__lead {
  font-size: 15px;
  color: var(--tb-text-dim);
  line-height: 1.7;
}
.tb-footer__trust {
  font-size: 12px;
  color: var(--tb-text-dim);
  line-height: 1.7;
  border-left: 3px solid var(--tb-border-strong);
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.02);
  opacity: 0.85;
}
.tb-footer__title {
  font-family: var(--tb-font-head);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tb-text);
  margin: 4px 0 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.tb-footer__title::before {
  content: "";
  width: 20px;
  height: 3px;
  background: var(--tb-grad-accent);
}
.tb-footer__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.tb-footer__item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--tb-text-dim);
  line-height: 1.6;
}
.tb-footer__tag {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 12px;
  font-weight: 800;
  color: var(--tb-blue);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.35);
  margin-top: 1px;
}
.tb-footer__links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.tb-footer__link {
  display: inline-block;
  padding: 7px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--tb-text-dim);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease-out, border-color 0.2s ease-out, padding-left 0.2s ease-out;
}
.tb-footer__link:hover {
  color: var(--tb-blue);
  border-color: var(--tb-blue);
  padding-left: 6px;
}
.tb-footer__bottom {
  border-top: 1px solid var(--tb-border-fine);
  padding: 18px 0;
  background: #05080F;
}
.tb-footer__meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 12px;
  font-size: 13px;
  color: var(--tb-text-dim);
}
.tb-footer__meta a { color: var(--tb-text-dim); transition: color 0.2s ease-out; }
.tb-footer__meta a:hover { color: var(--tb-blue); }
.tb-footer__sep { color: var(--tb-border-strong); }

/* ---------- 9. 通用按钮与徽标 ---------- */
.tb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--tb-font-head);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.06em;
  border: 2px solid var(--tb-border-strong);
  box-shadow: var(--tb-shadow-sm);
  text-align: center;
  line-height: 1.2;
  transition: transform 0.2s ease-out, box-shadow 0.2s ease-out, filter 0.2s ease-out;
}
.tb-btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.3); }
.tb-btn:active { transform: translate(0, 0); box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.3); }
.tb-btn--primary { background: var(--tb-grad-main); color: #02121F; border-color: var(--tb-blue); }
.tb-btn--accent { background: var(--tb-grad-accent); color: #1A0B00; border-color: var(--tb-orange); }
.tb-btn--ghost { background: transparent; color: var(--tb-blue); border-color: var(--tb-blue); box-shadow: none; }
.tb-btn--ghost:hover { background: rgba(0, 212, 255, 0.08); box-shadow: none; }

.tb-badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1;
  color: var(--tb-text);
  background: var(--tb-bg-panel);
  border: 1px solid var(--tb-border-strong);
}
.tb-badge--blue { color: var(--tb-blue); border-color: rgba(0, 212, 255, 0.4); background: rgba(0, 212, 255, 0.08); }
.tb-badge--orange { color: var(--tb-orange); border-color: rgba(255, 107, 0, 0.4); background: rgba(255, 107, 0, 0.08); }
.tb-badge--gold { color: var(--tb-gold); border-color: rgba(255, 200, 87, 0.4); background: rgba(255, 200, 87, 0.08); }

.tb-tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tb-tag {
  display: inline-block;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 700;
  color: var(--tb-text-dim);
  background: var(--tb-bg-card);
  border: 1px solid var(--tb-border-strong);
  transition: color 0.2s ease-out, border-color 0.2s ease-out;
}
.tb-tag:hover { color: var(--tb-blue); border-color: var(--tb-blue); }

/* ---------- 10. 章节与卡片 ---------- */
.tb-section { padding: 72px 0; }
.tb-section__head { margin-bottom: 36px; max-width: 720px; }
.tb-section__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--tb-font-head);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tb-blue);
  margin-bottom: 12px;
}
.tb-section__kicker::before {
  content: "";
  display: block;
  width: 32px;
  height: 2px;
  background: var(--tb-grad-main);
}
.tb-section__kicker--orange { color: var(--tb-orange); }
.tb-section__kicker--orange::before { background: var(--tb-grad-accent); }
.tb-section__title { font-size: clamp(28px, 4vw, 44px); letter-spacing: 0.02em; }
.tb-section__lead { margin-top: 14px; font-size: 16px; color: var(--tb-text-dim); line-height: 1.7; }

.tb-grid { display: grid; gap: 24px; }
.tb-grid--2 { grid-template-columns: repeat(2, 1fr); }
.tb-grid--3 { grid-template-columns: repeat(3, 1fr); }
.tb-grid--4 { grid-template-columns: repeat(4, 1fr); }

.tb-card {
  position: relative;
  background: var(--tb-bg-card);
  border: 2px solid var(--tb-border-strong);
  box-shadow: var(--tb-shadow-sm);
  padding: 24px;
  transition: transform 0.25s ease-out, box-shadow 0.25s ease-out, border-color 0.25s ease-out;
}
.tb-card::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  border-style: solid;
  border-width: 0 0 20px 20px;
  border-color: transparent transparent var(--tb-bg) transparent;
  opacity: 0.5;
  pointer-events: none;
}
.tb-card--hover:hover {
  transform: translate(-4px, -4px);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.35);
  border-color: var(--tb-blue);
}
.tb-card__title { font-size: 20px; margin-bottom: 8px; }
.tb-card__text { font-size: 14px; color: var(--tb-text-dim); line-height: 1.6; }
.tb-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--tb-border-fine);
}

/* ---------- 11. 图片容器 ---------- */
.tb-img {
  position: relative;
  background: linear-gradient(135deg, var(--tb-bg-panel), var(--tb-bg-card));
  border: 1px solid var(--tb-border-fine);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tb-text-dim);
  font-size: 13px;
  letter-spacing: 0.1em;
}
.tb-img::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, transparent 0 12px, rgba(0, 212, 255, 0.03) 12px 13px);
}
.tb-img--wide { aspect-ratio: 21 / 9; }
.tb-img--portrait { aspect-ratio: 3 / 4; }
.tb-img--square { aspect-ratio: 1; }
.tb-img__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px 12px 8px;
  background: linear-gradient(180deg, transparent, rgba(10, 14, 26, 0.88));
  font-size: 12px;
  color: var(--tb-text);
  letter-spacing: 0.04em;
}

/* ---------- 12. 数据与地图隐喻 ---------- */
.tb-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--tb-bg-card);
  border: 1px solid var(--tb-border-fine);
}
.tb-data-table th {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--tb-font-head);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tb-text-dim);
  background: var(--tb-bg-panel);
  border-bottom: 2px solid var(--tb-border-strong);
}
.tb-data-table td {
  padding: 12px 14px;
  color: var(--tb-text);
  border-bottom: 1px solid var(--tb-border-fine);
}
.tb-data-table tr:hover td { background: var(--tb-bg-panel); }
.tb-data-table td[data-num] {
  font-family: var(--tb-font-data);
  font-weight: 700;
  color: var(--tb-blue);
}

.tb-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding: 14px 18px;
  background: var(--tb-bg-card);
  border: 1px solid var(--tb-border-fine);
  border-left: 4px solid var(--tb-blue);
}
.tb-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--tb-text-dim);
}
.tb-legend__swatch { width: 12px; height: 12px; display: inline-block; border: 1px solid var(--tb-border-strong); }
.tb-legend__swatch--blue { background: var(--tb-blue); }
.tb-legend__swatch--orange { background: var(--tb-orange); }
.tb-legend__swatch--gold { background: var(--tb-gold); }

.tb-route {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: var(--tb-font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tb-text-dim);
}
.tb-route__node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 6px;
  background: var(--tb-bg-panel);
  border: 1px solid var(--tb-border-strong);
  color: var(--tb-blue);
}
.tb-route__arrow { color: var(--tb-border-strong); }
.tb-route__current { color: var(--tb-text); }

.tb-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 2px solid var(--tb-border-fine);
  margin-bottom: 24px;
}
.tb-tabs__btn {
  padding: 10px 20px;
  font-family: var(--tb-font-head);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--tb-text-dim);
  background: transparent;
  border: 1px solid transparent;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: color 0.2s ease-out, background 0.2s ease-out, border-color 0.2s ease-out;
}
.tb-tabs__btn:hover { color: var(--tb-text); background: var(--tb-bg-panel); }
.tb-tabs__btn[aria-selected="true"] {
  color: var(--tb-blue);
  border-color: var(--tb-border-fine);
  border-bottom-color: var(--tb-blue);
  background: var(--tb-bg-card);
}

/* ---------- 13. 正文与面包屑 ---------- */
.tb-content { font-size: 16px; line-height: 1.75; }
.tb-content p { margin: 0 0 1em; }
.tb-content h2 { font-size: 28px; margin: 2em 0 0.6em; }
.tb-content h3 { font-size: 22px; margin: 1.6em 0 0.5em; }
.tb-content a {
  color: var(--tb-blue);
  border-bottom: 1px solid rgba(0, 212, 255, 0.3);
  transition: border-color 0.2s ease-out;
}
.tb-content a:hover { border-color: var(--tb-blue); }
.tb-content ul, .tb-content ol { margin: 0 0 1em 1.4em; }
.tb-content li { margin-bottom: 0.4em; }

.tb-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  margin: 24px 0;
  font-size: 13px;
  color: var(--tb-text-dim);
}
.tb-breadcrumb a { color: var(--tb-blue); }
.tb-breadcrumb a:hover { border-bottom: 1px solid var(--tb-blue); }
.tb-breadcrumb__sep { color: var(--tb-border-strong); }
.tb-breadcrumb__current { color: var(--tb-text); font-weight: 700; }

/* ---------- 14. 工具类 ---------- */
.tb-lead { font-size: 18px; line-height: 1.7; color: var(--tb-text-dim); }
.tb-center { text-align: center; }
.tb-muted { color: var(--tb-text-dim); }
.tb-gold-stripe { color: var(--tb-gold); }
.tb-divider {
  height: 1px;
  border: none;
  margin: 32px 0;
  background: linear-gradient(90deg, transparent, var(--tb-border-strong), transparent);
}

/* ---------- 15. 响应式 ---------- */
@media (max-width: 920px) {
  .tb-nav-toggle { display: inline-flex; }
  .tb-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--tb-bg-card);
    border-top: 1px solid var(--tb-border-fine);
    border-bottom: 3px solid var(--tb-border-strong);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease-out;
    z-index: 999;
    width: 100%;
  }
  .tb-nav[data-open] {
    max-height: 480px;
    box-shadow: var(--tb-shadow);
  }
  .tb-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 16px;
  }
  .tb-nav__item + .tb-nav__item { border-top: 1px solid var(--tb-border-fine); }
  .tb-nav__link {
    padding: 14px 8px;
    font-size: 18px;
    clip-path: none;
  }
  .tb-nav__link[aria-current="page"] {
    box-shadow: inset 4px 0 0 var(--tb-blue);
  }

  .tb-grid--3, .tb-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .tb-footer__grid { grid-template-columns: 1fr; gap: 36px; padding: 40px 0; }
  .tb-footer__bottom { padding: 14px 0; }
}

@media (max-width: 640px) {
  .tb-header__row { min-height: 60px; }
  .tb-brand__title { font-size: 18px; }
  .tb-brand__mark { width: 36px; height: 36px; font-size: 18px; clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%); }
  .tb-brand__sub { font-size: 9px; letter-spacing: 0.18em; }
  .tb-topbar__label { display: none; }
  .tb-topbar__inner { justify-content: center; min-height: 32px; }
  .tb-topbar__link { padding: 2px 10px; font-size: 11px; }
  .tb-ticker__status { display: none; }
  .tb-ticker__item { gap: 6px; }
  .tb-ticker__league { font-size: 10px; padding: 1px 4px; }
  .tb-ticker__score { font-size: 13px; }
  .tb-grid--2, .tb-grid--3, .tb-grid--4 { grid-template-columns: 1fr; }
  .tb-section { padding: 48px 0; }
}

@media (max-width: 420px) {
  .tb-topbar__list { gap: 4px; }
  .tb-topbar__link { padding: 2px 8px; letter-spacing: 0.03em; }
}

/* ---------- 16. 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;
  }
  .tb-ticker__track { animation: none; }
  .tb-nav { transition: none; }
  .tb-progress { display: none; }
}