:root {
  --color-surface: #fbfbfb;
  --color-surface-alt: #f1f1f1;
  --color-surface-deep: #e3e3e2;
  --color-ink: #32332d;
  --color-ink-soft: #5e6057;
  --color-ink-muted: #7b7d73;
  --color-line: #d7d7d6;
  --color-primary: #647b13;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e6e9db;
  --color-accent: #637e07;
  --color-accent-ink: #ffffff;
  --color-highlight: #e0e4cf;
  --color-focus: #5e7a00;
  --color-contrast-surface: #202412;
  --color-contrast-ink: #e6e7e4;
  --color-contrast-line: #4c4f40;
  --color-contrast-accent: #bef20d;
  --overlay-scrim: linear-gradient(180deg, rgba(32, 36, 18, 0.35) 0%, rgba(32, 36, 18, 0.72) 55%, rgba(32, 36, 18, 0.92) 100%);
  --font-heading: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --text-xs: 11.7px;
  --text-sm: 15.6px;
  --text-base: 18px;
  --text-lg: 24.0px;
  --text-xl: 32.0px;
  --text-2xl: 42.6px;
  --text-3xl: 56.8px;
  --text-4xl: 75.8px;
  --text-display: clamp(34px, 6.6vw, 85px);
  --text-figure: clamp(28px, 4.8vw, 61px);
  --weight-heading: 711;
  --weight-body: 400;
  --leading-body: 1.9;
  --leading-heading: 1.26;
  --tracking-heading: -0.009em;
  --radius-sm: 0px;
  --radius-md: 2px;
  --radius-lg: 5px;
  --radius-pill: 5px;
  --border-thin: 2px;
  --border-thick: 3px;
  --shadow-1: none;
  --shadow-2: none;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1120px;
  --measure: 66ch;
  --gutter: 32px;
  --section-y: 100px;
  --section-y-lg: 140px;
}

/* ===== 01 Reset 与基础排版 ===== */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

h1 { font-size: var(--text-2xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-base); }

p { margin: 0 0 var(--space-3); }

ul, ol { margin: 0 0 var(--space-3); padding-left: var(--space-4); }

li { margin-bottom: var(--space-1); }

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

figure { margin: 0; }

table { border-collapse: collapse; width: 100%; }

button, input, select, textarea { font-family: inherit; font-size: inherit; }

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

a:hover { color: var(--color-primary); }

strong, b { font-weight: 700; }

:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

::selection {
  background-color: var(--color-primary-soft);
  color: var(--color-ink);
}

@keyframes bapp-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ===== 02 布局骨架 ===== */
.container {
  width: 100%;
  max-width: calc(var(--container) + var(--space-6));
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.section { padding-block: var(--section-y); }
.section--lg { padding-block: var(--section-y-lg); }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}

.grid--tight { gap: var(--space-3); }

.span-3 { grid-column: span 3; }
.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; }
.span-12 { grid-column: span 12; }

.rule {
  border: 0;
  border-top: var(--border-thin) solid var(--color-line);
  margin: 0;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ===== 03 跳转链接 ===== */
.skip-link {
  position: fixed;
  top: -140px;
  left: var(--space-3);
  z-index: 300;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border: var(--border-thick) solid var(--color-contrast-accent);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  font-weight: 700;
  text-decoration: none;
  transition: top 140ms ease-out;
}

.skip-link:focus { top: var(--space-2); color: var(--color-contrast-ink); }

/* ===== 04 站点头部 ===== */
.site-header {
  position: relative;
  z-index: 100;
  background-color: var(--color-surface);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  z-index: 200;
  pointer-events: none;
  background-color: color-mix(in srgb, var(--color-line) 55%, transparent);
}

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

.masthead {
  padding-block: var(--space-6) var(--space-3);
  background-color: var(--color-surface);
}

.masthead__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  text-align: center;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--color-ink);
  text-decoration: none;
}

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

.brand__name {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.brand__name::before {
  content: "";
  flex: none;
  width: 0.3em;
  height: 0.3em;
  background-color: var(--color-primary);
}

.brand__latin {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.32em;
  color: var(--color-ink-muted);
}

.ticker {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.ticker__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-2) var(--space-4);
  padding-block: var(--space-2);
  min-height: 44px;
}

.ticker__item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  font-size: var(--text-base);
  line-height: 1.2;
  color: var(--color-contrast-ink);
}

.ticker__item + .ticker__item::before {
  content: "";
  width: 2px;
  height: 20px;
  margin-right: var(--space-3);
  background-color: var(--color-contrast-line);
}

.ticker__label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-contrast-ink);
}

.ticker__value {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1;
  color: var(--color-contrast-accent);
  font-variant-numeric: tabular-nums;
}

.ticker__dot {
  flex: none;
  width: 10px;
  height: 10px;
  background-color: var(--color-contrast-accent);
  animation: bapp-pulse 2s ease-in-out infinite;
}

.nav-bar {
  background-color: var(--color-surface);
  border-bottom: var(--border-thick) solid var(--color-ink);
}

.nav-bar__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding-block: var(--space-1);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: 0 var(--space-3);
  background-color: var(--color-surface-alt);
  color: var(--color-ink);
  border: var(--border-thin) solid var(--color-ink);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  font-weight: 500;
  cursor: pointer;
}

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

.nav-toggle__icon {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 20px;
  height: 14px;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: currentColor;
}

.nav-toggle__text { font-size: var(--text-sm); letter-spacing: 0.08em; }

.nav { display: block; }

.nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav__item { display: flex; margin: 0; }

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 var(--space-3);
  color: var(--color-ink);
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  font-weight: 500;
  text-decoration: none;
  transition: border-color 140ms ease-out, color 140ms ease-out, background-color 140ms ease-out;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background-color: transparent;
}

.nav__link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.nav__link:hover::after { background-color: var(--color-primary-soft); }

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

.nav__link[aria-current="page"]::after { background-color: var(--color-primary); }

/* ===== 05 站点页脚 ===== */
.site-footer {
  margin-top: var(--section-y);
  background-color: var(--color-surface-alt);
  border-top: var(--border-thick) solid var(--color-ink);
  color: var(--color-ink);
}

.footer-tier {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
  padding-block: var(--space-6);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.footer-tier:last-child { border-bottom: 0; }

.footer-tier__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-tier--index .footer-tier__inner { grid-column: 1 / 9; }
.footer-tier--contact .footer-tier__inner { grid-column: 4 / 12; }
.footer-tier--legal .footer-tier__inner { grid-column: 7 / -1; }

.footer-tier__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 1.4;
  color: var(--color-ink-muted);
}

.footer-tier__brand {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: normal;
  color: var(--color-ink);
}

.footer-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-index__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding-left: var(--space-3);
  border-left: var(--border-thick) solid var(--color-primary);
}

.footer-index__link {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.3;
  color: var(--color-ink);
  text-decoration: none;
}

.footer-index__link:hover {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.footer-index__desc {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.footer-contact {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-contact__item {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-base);
}

.footer-contact__key {
  min-width: 6em;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-ink-muted);
}

.footer-contact__val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink);
}

.footer-contact__note {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-legal li { margin: 0; }

.footer-legal__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-bottom: 2px;
  color: var(--color-ink);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-base);
  font-weight: 500;
  text-decoration: none;
}

.footer-legal__link:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.footer-copy {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* ===== 06 通用文本与章节 ===== */
.prose { max-width: var(--measure); }
.prose p { margin: 0 0 var(--space-3); }

.lede {
  margin: 0 0 var(--space-4);
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.chapter {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-1) var(--space-4);
  align-items: baseline;
  margin-bottom: var(--space-4);
  padding-top: var(--space-2);
  border-top: var(--border-thick) solid var(--color-ink);
}

.chapter__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 700;
  line-height: 0.9;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.chapter__title {
  margin: 0;
  font-size: var(--text-xl);
}

.chapter__meta {
  grid-column: 2;
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

.callout {
  margin: 0 0 var(--space-4);
  padding: var(--space-3);
  max-width: var(--measure);
  background-color: var(--color-highlight);
  border-left: 4px solid var(--color-primary);
  font-size: var(--text-base);
}

.callout p:last-child { margin-bottom: 0; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-4);
  padding: 0;
  list-style: none;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.breadcrumb li { margin: 0; }

.breadcrumb__link {
  color: var(--color-accent);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.breadcrumb__sep { color: var(--color-ink-muted); }

/* ===== 07 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-surface);
  color: var(--color-ink);
  border: var(--border-thin) solid var(--color-ink);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 140ms ease-out, color 140ms ease-out, border-color 140ms ease-out;
}

.btn:hover {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-surface);
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-surface);
}

.btn--ghost {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--ghost:hover {
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--block { width: 100%; }

/* ===== 08 框体与标签 ===== */
.frame {
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
}

.frame--deep {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-line);
}

.frame__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-surface-alt);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.06em;
}

.frame--deep .frame__head {
  background-color: transparent;
  border-bottom-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}

.frame__body { padding: var(--space-3); }

.frame--deep .frame__body { color: var(--color-contrast-ink); }

.frame--deep a { color: var(--color-contrast-accent); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px var(--space-2);
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.6;
}

.tag--live {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
  border-color: var(--color-contrast-accent);
}

/* ===== 09 数据组件 ===== */
.stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  background-color: var(--color-surface-alt);
  border-left: 4px solid var(--color-primary);
}

.stat__value {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.stat__unit {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-ink-muted);
}

.stat__label {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-ink-soft);
}

.scorebar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
}

.scorebar__team {
  font-size: var(--text-base);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.scorebar__team--away { text-align: right; }

.scorebar__score {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1;
  color: var(--color-contrast-accent);
  font-variant-numeric: tabular-nums;
}

.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.timeline__item {
  position: relative;
  margin: 0;
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-6);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: var(--space-3);
  top: calc(var(--space-3) + 7px);
  width: 10px;
  height: 10px;
  background-color: var(--color-surface-deep);
  border: var(--border-thin) solid var(--color-primary);
}

.timeline__item[data-state="live"]::before {
  background-color: var(--color-contrast-accent);
  border-color: var(--color-contrast-accent);
  animation: bapp-pulse 2s ease-in-out infinite;
}

/* ===== 10 图片容器 ===== */
.figure {
  position: relative;
  display: block;
  overflow: hidden;
  background-color: var(--color-surface-deep);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
}

.figure > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure--3x2 { aspect-ratio: 3 / 2; }
.figure--1x1 { aspect-ratio: 1 / 1; }
.figure--16x9 { aspect-ratio: 16 / 9; }

.figure__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image: var(--overlay-scrim);
  pointer-events: none;
}

.figure__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  margin: 0;
  padding: var(--space-3);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.6;
}

/* ===== 11 可展开组 ===== */
.expandable {
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
}

.expandable + .expandable { margin-top: calc(-1 * var(--border-thin)); }

.expandable__trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 44px;
  margin: 0;
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-primary-soft);
  color: var(--color-ink);
  border: 0;
  border-radius: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.3;
  text-align: left;
  cursor: pointer;
  transition: background-color 140ms ease-out, color 140ms ease-out;
}

.expandable__trigger:hover {
  background-color: var(--color-highlight);
  color: var(--color-primary);
}

.expandable__icon {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
}

.expandable__icon::before {
  content: "";
  position: absolute;
  top: 4px;
  left: 1px;
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 9px solid var(--color-primary);
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
  transition: transform 150ms ease-out;
}

.expandable[data-open] .expandable__icon::before { transform: rotate(0deg); }

.expandable__panel {
  display: grid;
  grid-template-rows: 0fr;
  visibility: hidden;
  transition: grid-template-rows 160ms ease-out, visibility 160ms ease-out;
}

.expandable[data-open] .expandable__panel {
  grid-template-rows: 1fr;
  visibility: visible;
}

.expandable__inner {
  overflow: hidden;
  padding: 0 var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.expandable[data-open] .expandable__inner { padding-block: var(--space-3); }

.expandable__inner > *:last-child { margin-bottom: 0; }

/* ===== 12 响应式 ===== */
@media (max-width: 1000px) {
  .span-3, .span-4, .span-5 { grid-column: span 6; }
  .span-7, .span-8 { grid-column: span 12; }
}

@media (max-width: 900px) {
  .grid { gap: var(--space-3); }
  .span-3, .span-4, .span-5, .span-6, .span-7, .span-8 { grid-column: span 12; }

  .chapter {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-1);
  }

  .chapter__meta { grid-column: 1; }

  .footer-tier { gap: var(--space-3); }
  .footer-tier--index .footer-tier__inner,
  .footer-tier--contact .footer-tier__inner,
  .footer-tier--legal .footer-tier__inner { grid-column: 1 / -1; }

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

  .section { padding-block: var(--space-8); }
  .section--lg { padding-block: var(--section-y); }
}

@media (max-width: 860px) {
  .masthead { padding-block: var(--space-4) var(--space-2); }
  .brand__name { font-size: var(--text-xl); }

  .ticker__inner {
    justify-content: flex-start;
    gap: var(--space-1) var(--space-3);
  }

  .ticker__item + .ticker__item::before { display: none; }

  .nav-bar__inner {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: var(--space-2);
    padding-block: var(--space-2);
  }

  .nav-toggle { display: inline-flex; align-self: flex-start; }

  .nav { display: none; }

  .nav[data-open] { display: block; }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav__item {
    border-top: var(--border-thin) solid var(--color-line);
  }

  .nav__link {
    width: 100%;
    justify-content: flex-start;
    padding-inline: var(--space-2);
    border-color: transparent;
    border-radius: 0;
  }

  .nav__link[aria-current="page"] { border-left-color: var(--color-primary); }
}

@media (max-width: 560px) {
  .container { padding-inline: var(--space-2); }
  .ticker__value { font-size: var(--text-base); }
  .scorebar { grid-template-columns: minmax(0, 1fr); }
  .scorebar__team--away { text-align: left; }
}

/* ===== 13 动效降级 ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .ticker__dot,
  .timeline__item[data-state="live"]::before { animation: none; }

  .expanded-skip { display: none; }
}