:root {
  --color-surface: #fcfcfc;
  --color-surface-alt: #f3f3f4;
  --color-surface-deep: #e6e7e8;
  --color-ink: #474a52;
  --color-ink-soft: #6b6f7a;
  --color-ink-muted: #787c87;
  --color-line: #dbdcdd;
  --color-primary: #365cc9;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e0e6f5;
  --color-accent: #d2440f;
  --color-accent-ink: #ffffff;
  --color-highlight: #f4dbd1;
  --color-focus: #d33c03;
  --color-contrast-surface: #191d2a;
  --color-contrast-ink: #e4e5e7;
  --color-contrast-line: #464954;
  --color-contrast-accent: #ee4d11;
  --overlay-scrim: linear-gradient(180deg, rgba(25, 29, 42, 0.35) 0%, rgba(25, 29, 42, 0.72) 55%, rgba(25, 29, 42, 0.92) 100%);
  --font-heading: ui-monospace, SFMono-Regular, Menlo, Consolas, "PingFang SC", monospace;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --text-xs: 12.2px;
  --text-sm: 15.2px;
  --text-base: 17px;
  --text-lg: 21.2px;
  --text-xl: 26.6px;
  --text-2xl: 33.2px;
  --text-3xl: 41.5px;
  --text-4xl: 51.9px;
  --text-display: clamp(34px, 4.8vw, 62px);
  --text-figure: clamp(28px, 3.5vw, 45px);
  --weight-heading: 666;
  --weight-body: 400;
  --leading-body: 1.73;
  --leading-heading: 1.17;
  --tracking-heading: 0.005em;
  --radius-sm: 1px;
  --radius-md: 2px;
  --radius-lg: 4px;
  --radius-pill: 4px;
  --border-thin: 1px;
  --border-thick: 1px;
  --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: 1280px;
  --measure: 72ch;
  --gutter: 16px;
  --section-y: 81px;
  --section-y-lg: 113px;
}

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

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

body {
  margin: 0;
  background: 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;
}

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

p { margin: 0; }

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

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

table { border-collapse: collapse; }

[hidden] { display: none !important; }

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

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

/* ============ 布局骨架 ============ */
.shell {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-2);
}

#main-content { scroll-margin-top: 120px; }

.skip-link {
  position: absolute;
  top: -80px;
  left: var(--space-2);
  z-index: 90;
  padding: 10px 18px;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: var(--space-1);
  text-decoration: none;
}

/* ============ 共享头部 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--color-surface);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.masthead {
  overflow: hidden;
  max-height: 120px;
  opacity: 1;
  background: var(--color-surface);
  transition: max-height 0.22s ease, opacity 0.18s ease;
}

.site-header[data-condensed="true"] .masthead {
  max-height: 0;
  opacity: 0;
}

.masthead__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-2);
  min-height: 66px;
}

.masthead__sign {
  justify-self: start;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.brand {
  justify-self: center;
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--color-ink);
}

.brand:hover { text-decoration: none; }

.brand__mark {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-accent);
}

.brand__word {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: 0.02em;
  color: var(--color-ink);
}

.brand__sub {
  padding-left: 10px;
  border-left: var(--border-thin) solid var(--color-line);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--color-ink-muted);
}

.masthead__utils {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.masthead__utils a {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
  padding-bottom: 2px;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.masthead__utils a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  text-decoration: none;
}

/* 栏目条 */
.columnbar {
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.columnbar__inner {
  position: relative;
  display: flex;
  align-items: stretch;
  gap: var(--space-2);
  min-height: 46px;
}

.primary-nav {
  flex: 1 1 auto;
  display: flex;
  align-items: stretch;
}

.primary-nav__list {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  height: 100%;
}

.primary-nav__list li { display: flex; }

.primary-nav__list a {
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
  color: var(--color-ink-soft);
  white-space: nowrap;
}

.primary-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  background: transparent;
}

.primary-nav__list a:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
  text-decoration: none;
}

.primary-nav__list a[aria-current="page"] {
  color: var(--color-primary);
  font-weight: var(--weight-heading);
  background: var(--color-surface);
}

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

.columnbar__meta {
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  white-space: nowrap;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-block: 6px;
  padding: 6px 12px;
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  color: var(--color-ink);
}

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

.nav-toggle__bars {
  display: inline-block;
  width: 16px;
  height: 10px;
  background-image:
    linear-gradient(var(--color-ink) 0 0),
    linear-gradient(var(--color-ink) 0 0),
    linear-gradient(var(--color-ink) 0 0);
  background-size: 100% 1px;
  background-position: 0 0, 0 50%, 0 100%;
  background-repeat: no-repeat;
}

/* 实时比分带 */
.live-strip {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.live-strip__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 44px;
}

.live-strip__tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
  white-space: nowrap;
}

.live-dot {
  width: 7px;
  height: 7px;
  background: var(--color-contrast-accent);
  border-radius: var(--radius-sm);
  transition: background-color 0.45s ease;
}

.live-strip__scores {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  overflow-x: auto;
  scrollbar-width: thin;
  padding-block: 4px;
}

.live-strip__scores li {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.live-strip__scores .team {
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
  opacity: 0.7;
}

.live-strip__scores .num {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-accent);
}

.live-strip__scores .vs {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
  opacity: 0.45;
}

.live-strip__scores .clock {
  padding-left: 7px;
  border-left: var(--border-thin) solid var(--color-contrast-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
  opacity: 0.6;
}

.live-strip__refresh {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-contrast-line);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
  white-space: nowrap;
}

.live-strip__refresh b {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-accent);
  transition: color 0.45s ease;
}

.live-strip.is-pulsing .live-dot { background: var(--color-contrast-ink); }
.live-strip.is-pulsing .live-strip__refresh b { color: var(--color-contrast-ink); }

/* ============ 共享页脚 ============ */
.site-footer {
  margin-top: var(--section-y-lg);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.footer__inner {
  padding-block: var(--space-6) var(--space-4);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.footer__brand {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: 0.02em;
  color: var(--color-contrast-ink);
  padding-left: var(--space-1);
  border-left: 3px solid var(--color-contrast-accent);
}

.footer__desc {
  margin-top: var(--space-1);
  max-width: 34ch;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.footer__title {
  margin-bottom: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.footer__list li + li { margin-top: 7px; }

.footer__list a {
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) solid transparent;
}

.footer__list a:hover {
  color: var(--color-contrast-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-contrast-accent);
  text-underline-offset: 3px;
}

.footer__list--meta li {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-contrast-ink);
  opacity: 0.72;
  word-break: break-all;
}

.footer__scale {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding-block: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.footer__tick-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-contrast-accent);
  letter-spacing: 0.06em;
}

.footer__ticks {
  flex: 1 1 auto;
  height: 12px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--color-contrast-line) 0 1px,
    transparent 1px 24px
  );
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  padding-top: var(--space-2);
}

.footer__legal p {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-contrast-ink);
  opacity: 0.6;
}

/* ============ 通用组件 ============ */
.breadcrumbs {
  padding-block: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumbs a { color: var(--color-ink-soft); }

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

.breadcrumbs [aria-current="page"] {
  color: var(--color-primary);
  font-weight: var(--weight-heading);
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--color-line);
}

.page-head {
  padding-block: var(--section-y) var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-head__kicker {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-head h1 {
  margin-top: var(--space-1);
  font-size: var(--text-display);
}

.page-head__lede {
  max-width: var(--measure);
  margin-top: var(--space-2);
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--color-ink-soft);
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.section-head__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}

.section-head h2 { font-size: var(--text-2xl); }

.section-head__note {
  margin-left: auto;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

/* 框体 */
.panel {
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
}

.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 7px var(--space-2);
  background: var(--color-surface-deep);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

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

/* 竖线强调 */
.marked {
  padding-left: var(--space-2);
  border-left: 3px solid var(--color-primary);
}

.marked--accent { border-left-color: var(--color-accent); }
.marked--deep { border-left-color: var(--color-contrast-surface); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  background: var(--color-primary-soft);
  text-decoration: none;
}

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

.btn--solid:hover {
  background: color-mix(in srgb, var(--color-primary) 85%, var(--color-contrast-surface));
  color: var(--color-primary-ink);
}

.btn--ghost {
  border-color: var(--color-line);
  color: var(--color-ink-soft);
}

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

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  white-space: nowrap;
}

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

.tag--primary {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-soft);
  color: var(--color-primary);
}

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

/* 筛选 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding-block: var(--space-1);
}

.filter-btn {
  padding: 5px 13px;
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

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

.filter-btn[aria-pressed="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.filter-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink-muted);
}

/* 数据板 */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.data-table caption {
  padding-bottom: var(--space-1);
  text-align: left;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.data-table th,
.data-table td {
  padding: 9px var(--space-2);
  text-align: left;
  vertical-align: top;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.data-table thead th {
  background: var(--color-surface-deep);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.data-table tbody tr:hover { background: var(--color-primary-soft); }

.data-table .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: var(--weight-heading);
  color: var(--color-accent);
}

/* 数值块 */
.stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}

.stat--hero .stat__value { font-size: var(--text-figure); }

.stat__label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

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

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

.figure--16x9 { aspect-ratio: 16 / 9; }
.figure--4x3 { aspect-ratio: 4 / 3; }
.figure--1x1 { aspect-ratio: 1 / 1; }
.figure--21x9 { aspect-ratio: 21 / 9; }

.figure__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  gap: var(--space-1);
  padding: var(--space-2);
  background: var(--overlay-scrim);
  color: var(--color-contrast-ink);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}

.figure__caption {
  padding: 7px var(--space-2);
  background: var(--color-surface);
  border-top: var(--border-thin) solid var(--color-line);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* 正文容器 */
.prose {
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.prose > * + * { margin-top: var(--space-2); }

.prose h2 {
  margin-top: var(--space-4);
  font-size: var(--text-xl);
}

.prose h3 {
  margin-top: var(--space-3);
  font-size: var(--text-lg);
}

.prose a {
  text-decoration: underline;
  text-decoration-color: var(--color-primary-soft);
  text-underline-offset: 3px;
}

.prose a:hover { text-decoration-color: var(--color-primary); }

.prose ul,
.prose ol {
  padding-left: 1.3em;
  list-style: disc;
}

.prose ol { list-style: decimal; }

.prose li + li { margin-top: 5px; }

.prose blockquote {
  margin: 0;
  padding-left: var(--space-2);
  border-left: 3px solid var(--color-primary);
  color: var(--color-ink-soft);
}

.prose code {
  padding: 1px 5px;
  background: var(--color-surface-deep);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.92em;
}

.prose hr {
  height: 1px;
  border: 0;
  background: var(--color-line);
  margin-block: var(--space-3);
}

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

.grid--loose { gap: var(--space-4); }

.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

/* 目录轨道 */
.rail {
  position: sticky;
  top: 104px;
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
}

.rail__head {
  padding: 7px var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.rail__list { padding-block: var(--space-1); }

.rail__list a {
  display: block;
  padding: 7px var(--space-2);
  border-left: 3px solid transparent;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  transition: background-color 0.15s ease, color 0.15s ease;
}

.rail__list a:hover {
  background: var(--color-surface);
  color: var(--color-primary);
  text-decoration: none;
}

.rail__list a[aria-current="true"],
.rail__list a[aria-current="page"] {
  background: var(--color-primary-soft);
  border-left-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: var(--weight-heading);
}

.rail__foot {
  padding: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
}

.rail__foot a { color: var(--color-ink-soft); }
.rail__foot a:hover { color: var(--color-primary); }

/* 显现 */
html.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
}

html.js-reveal [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

/* ============ 响应式 ============ */
@media (max-width: 1100px) {
  .footer__grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer__col:nth-child(4) { grid-column: span 3; }
}

@media (max-width: 900px) {
  .site-header[data-condensed="true"] .masthead {
    max-height: 120px;
    opacity: 1;
  }

  .masthead__inner {
    grid-template-columns: auto 1fr;
    gap: var(--space-1);
    min-height: 58px;
  }

  .masthead__sign { display: none; }

  .brand { justify-self: start; }

  .brand__mark { font-size: var(--text-lg); }
  .brand__word { font-size: var(--text-base); }
  .brand__sub { display: none; }

  .masthead__utils {
    justify-self: end;
    gap: var(--space-1);
  }

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

  .primary-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 70;
    background: var(--color-surface);
    border: var(--border-thin) solid var(--color-line);
    border-top: 0;
  }

  .primary-nav[data-open="true"] { display: block; }

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

  .primary-nav__list a {
    padding: 13px var(--space-2);
    border-top: var(--border-thin) solid var(--color-line);
  }

  .primary-nav__list a::after { display: none; }

  .primary-nav__list a[aria-current="page"] {
    background: var(--color-primary-soft);
    box-shadow: inset 3px 0 0 var(--color-primary);
  }

  .columnbar__meta { display: none; }

  .live-strip__inner { gap: var(--space-2); }
  .live-strip__scores { gap: var(--space-3); }

  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-1, .col-2, .col-3, .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-11, .col-12 { grid-column: span 6; }
  .col-4 { grid-column: span 3; }

  .rail {
    position: static;
    margin-bottom: var(--space-3);
  }

  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__col:nth-child(4) { grid-column: span 2; }

  .page-head { padding-block: var(--section-y) var(--space-3); }
}

@media (max-width: 600px) {
  .columnbar__inner { min-height: 44px; }

  .live-strip__inner {
    flex-wrap: wrap;
    padding-block: 8px;
    row-gap: 6px;
  }

  .live-strip__scores { flex-basis: 100%; order: 3; }
  .live-strip__refresh { margin-left: auto; border-left: 0; padding-left: 0; }

  .grid { grid-template-columns: minmax(0, 1fr); }
  .col-1, .col-2, .col-3, .col-4, .col-5, .col-6,
  .col-7, .col-8, .col-9, .col-10, .col-11, .col-12 { grid-column: span 1; }

  .footer__grid { grid-template-columns: minmax(0, 1fr); }
  .footer__col:nth-child(4) { grid-column: span 1; }

  .section-head { flex-wrap: wrap; }
  .section-head__note { margin-left: 0; flex-basis: 100%; }

  .page-head__lede { font-size: var(--text-base); }
}

/* ============ 动效偏好 ============ */
@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;
  }

  html.js-reveal [data-reveal],
  html.js-reveal [data-reveal].is-in {
    opacity: 1;
    transform: none;
  }
}