:root {
  --color-surface: #fbfbfb;
  --color-surface-alt: #f1f1f1;
  --color-surface-deep: #e3e3e2;
  --color-ink: #34322d;
  --color-ink-soft: #615e57;
  --color-ink-muted: #7d7b72;
  --color-line: #d7d7d6;
  --color-primary: #91710d;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #ece8da;
  --color-accent: #8e7010;
  --color-accent-ink: #ffffff;
  --color-highlight: #e7e2d1;
  --color-focus: #8c6c08;
  --color-contrast-surface: #201c0f;
  --color-contrast-ink: #e7e6e4;
  --color-contrast-line: #4c483e;
  --color-contrast-accent: #e5b41a;
  --overlay-scrim: linear-gradient(180deg, rgba(32, 28, 15, 0.35) 0%, rgba(32, 28, 15, 0.72) 55%, rgba(32, 28, 15, 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: 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, 6.2vw, 80px);
  --text-figure: clamp(28px, 4.5vw, 58px);
  --weight-heading: 701;
  --weight-body: 400;
  --leading-body: 1.81;
  --leading-heading: 1.19;
  --tracking-heading: 0.009em;
  --radius-sm: 3px;
  --radius-md: 4px;
  --radius-lg: 4px;
  --radius-pill: 4px;
  --border-thin: 2px;
  --border-thick: 2px;
  --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: 1140px;
  --measure: 63ch;
  --gutter: 24px;
  --section-y: 77px;
  --section-y-lg: 108px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}
body {
  margin: 0;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  font-weight: var(--weight-body);
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
h1, h2, h3, h4 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: inherit;
}
h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }
p { margin: 0 0 var(--space-3); text-wrap: pretty; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0 0 var(--space-3); padding-left: 1.35em; }
li { margin-block: var(--space-1); }
strong, b { font-weight: var(--weight-heading); }
button { font: inherit; color: inherit; }
a { color: var(--color-primary); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
::selection { background: var(--color-highlight); color: var(--color-ink); }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
.section--deep :focus-visible,
.site-footer :focus-visible,
.score-strip :focus-visible { outline-color: var(--color-contrast-accent); }

@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;
  }
}

/* ---------- 基础工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.mono { font-family: var(--font-mono); overflow-wrap: anywhere; }
.stack { display: flex; flex-direction: column; gap: var(--space-2); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}
.rule { border: 0; border-top: 1px solid var(--color-line); margin: 0; }

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  top: 0; left: var(--space-2);
  z-index: 200;
  transform: translateY(-140%);
  padding: 12px 18px;
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border: var(--border-thin) solid var(--color-contrast-surface);
  border-radius: var(--radius-md);
  font-weight: var(--weight-heading);
  text-decoration: none;
}
.skip-link:focus-visible { transform: translateY(6px); }

/* ---------- 滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  height: 4px;
  transform: scaleX(var(--progress, 0));
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 90;
}
.section--deep ~ .scroll-progress { background: var(--color-contrast-accent); }

/* ---------- header ---------- */
.site-header {
  position: relative;
  background: var(--color-surface);
  border-bottom: var(--border-thin) solid var(--color-ink);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
  min-height: 84px;
}
.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 0 0 auto;
}
.brand__link {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-ink);
}
.brand__link:hover { text-decoration: none; }
.brand__link:hover .brand__name { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; }
.brand__name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
}
.brand__tagline {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
  padding-left: var(--space-1);
  border-left: var(--border-thin) solid var(--color-primary);
}
.brand__note {
  margin: 0;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.08em;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  padding: 10px 14px;
  background: var(--color-surface);
  color: var(--color-ink);
  border: var(--border-thin) solid var(--color-ink);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  cursor: pointer;
}
.nav-toggle:hover { background: var(--color-primary-soft); border-color: var(--color-primary); color: var(--color-primary); }
.nav-toggle__bars { display: inline-flex; flex-direction: column; gap: 3px; width: 16px; }
.nav-toggle__bars span { display: block; height: 2px; background: currentColor; }
.nav-toggle[aria-expanded="true"] { background: var(--color-contrast-surface); color: var(--color-contrast-ink); border-color: var(--color-contrast-surface); }

.site-nav {
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}
.site-nav__list {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-1);
  min-width: max-content;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
}
.site-nav__list li { margin: 0; }
.site-nav__link {
  display: block;
  padding: 10px 12px;
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  text-decoration: none;
  white-space: nowrap;
}
.site-nav__link:hover,
.site-nav__link:focus-visible {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.site-nav__link[aria-current="page"] {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-underline-offset: 6px;
}

/* ---------- 吸附比分条 ---------- */
.score-strip {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}
.score-strip__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-block: var(--space-1);
}
.score-strip__label {
  flex: 0 0 auto;
  padding: 4px 10px;
  border: var(--border-thin) solid var(--color-contrast-accent);
  border-radius: var(--radius-sm);
  color: var(--color-contrast-accent);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.14em;
  white-space: nowrap;
}
.score-strip__track {
  flex: 1 1 auto;
  display: flex;
  gap: var(--space-1);
  margin: 0;
  padding: 0 0 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}
.score-strip__track li { margin: 0; }
.score-card {
  display: flex;
  align-items: stretch;
  min-width: max-content;
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-contrast-surface) 88%, var(--color-contrast-ink));
}
.score-card:hover { border-color: var(--color-contrast-accent); }
.score-card__match {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: 8px 12px;
  color: var(--color-contrast-ink);
  text-decoration: none;
}
.score-card__match:hover { text-decoration: none; }
.score-card__teams { font-size: var(--text-sm); }
.score-card__vs { color: color-mix(in srgb, var(--color-contrast-ink) 70%, var(--color-contrast-surface)); font-size: var(--text-xs); }
.score-card__score {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-accent);
}
.score-card__dash { padding-inline: 2px; }
.score-card__minute {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: color-mix(in srgb, var(--color-contrast-ink) 76%, var(--color-contrast-surface));
}
.score-card__clip {
  align-self: stretch;
  display: flex;
  align-items: center;
  padding: 8px 10px;
  border-left: var(--border-thin) solid var(--color-contrast-line);
  color: var(--color-contrast-accent);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  text-decoration: none;
}
.score-card__clip:hover { background: var(--color-contrast-accent); color: var(--color-contrast-surface); text-decoration: none; }
.score-strip__sync {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, var(--color-contrast-surface));
  white-space: nowrap;
}

/* ---------- 区块骨架 ---------- */
.section { padding-block: var(--section-y); }
.section--lg { padding-block: var(--section-y-lg); }
.section--tight { padding-block: var(--space-6); }
.section--alt { background: var(--color-surface-alt); }
.section--deep { background: var(--color-contrast-surface); color: var(--color-contrast-ink); }
.section--deep h1, .section--deep h2, .section--deep h3, .section--deep h4 { color: var(--color-contrast-ink); }
.section--deep a { color: var(--color-contrast-accent); }
.section--deep .rule { border-top-color: var(--color-contrast-line); }

/* ---------- 刻度与编号 ---------- */
.tick-rule {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-block: var(--space-2);
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
}
.tick-rule::after {
  content: "";
  flex: 1 1 auto;
  height: 10px;
  background-image: repeating-linear-gradient(to right, var(--color-line) 0 1px, transparent 1px 12px);
}
.section--deep .tick-rule { color: color-mix(in srgb, var(--color-contrast-ink) 76%, var(--color-contrast-surface)); }
.section--deep .tick-rule::after {
  background-image: repeating-linear-gradient(to right, var(--color-contrast-line) 0 1px, transparent 1px 12px);
}
.chapter {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: end;
  gap: var(--space-1) var(--space-3);
  margin-bottom: var(--space-4);
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-ink);
}
.chapter__num {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}
.chapter__label {
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-ink-soft);
}
.section--deep .chapter { border-top-color: var(--color-contrast-line); }
.section--deep .chapter__num { color: var(--color-contrast-accent); }
.section--deep .chapter__label { color: color-mix(in srgb, var(--color-contrast-ink) 82%, var(--color-contrast-surface)); }

/* ---------- 正文容器 ---------- */
.prose { max-width: var(--measure); }
.prose h2 { font-size: var(--text-2xl); margin-top: var(--space-6); }
.prose h3 { font-size: var(--text-xl); margin-top: var(--space-4); }
.prose p { font-size: var(--text-base); line-height: var(--leading-body); }
.prose li { font-size: var(--text-base); }
.prose blockquote {
  margin: var(--space-4) 0;
  padding: var(--space-2) 0 var(--space-2) var(--space-3);
  border-left: var(--border-thick) solid var(--color-primary);
  color: var(--color-ink-soft);
  font-size: var(--text-lg);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 48px;
  padding: 12px 22px;
  border: var(--border-thin) solid var(--color-ink);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  text-decoration: none;
  cursor: pointer;
}
.btn:hover,
.btn:focus-visible {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}
.btn--primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--color-highlight);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn--ghost { background: transparent; }
.btn--onDark {
  background: transparent;
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
}
.btn--onDark:hover,
.btn--onDark:focus-visible {
  background: var(--color-contrast-accent);
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}
.link-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: var(--weight-heading);
  text-decoration: underline;
  text-decoration-thickness: 1px;
}
.link-cta::after { content: "→"; font-family: var(--font-mono); text-decoration: none; }
.link-cta:hover { text-decoration-thickness: 2px; }

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-3);
  padding: 0;
  list-style: none;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}
.breadcrumb li { margin: 0; display: flex; align-items: center; gap: var(--space-1); }
.breadcrumb li + li::before { content: "›"; color: var(--color-ink-muted); }
.breadcrumb a { color: var(--color-ink-soft); }
.breadcrumb a:hover { color: var(--color-primary); }

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

/* ---------- 面板与状态 ---------- */
.panel {
  display: flex;
  flex-direction: column;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}
.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-deep);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
}
.panel__body { flex: 1 1 auto; padding: var(--space-3); }
.panel--deep {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-line);
}
.panel--deep .panel__head {
  background: color-mix(in srgb, var(--color-contrast-surface) 84%, var(--color-contrast-ink));
  border-bottom-color: var(--color-contrast-line);
  color: color-mix(in srgb, var(--color-contrast-ink) 86%, var(--color-contrast-surface));
}
.state-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.06em;
}
.state-pill__dot { width: 8px; height: 8px; background: var(--color-primary); }
.state-pill:hover { background: var(--color-highlight); }
.section--deep .state-pill {
  border-color: var(--color-contrast-accent);
  background: transparent;
  color: var(--color-contrast-accent);
}
.section--deep .state-pill__dot { background: var(--color-contrast-accent); }

/* ---------- 图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: var(--border-thin) solid var(--color-ink);
  border-radius: 0;
  background: var(--color-surface-deep);
}
.media-frame--flush { border: 0; }
.media-frame__ratio { display: block; width: 100%; aspect-ratio: 16 / 9; }
.media-frame__ratio--tall { aspect-ratio: 3 / 4; }
.media-frame__ratio--square { aspect-ratio: 1 / 1; }
.media-frame__img,
.media-frame__ratio > img,
.media-frame__ratio > svg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}
.media-frame__overlay {
  position: absolute;
  inset: auto var(--space-3) var(--space-3) var(--space-3);
  color: var(--color-contrast-ink);
}
.media-frame__overlay h3, .media-frame__overlay p { color: var(--color-contrast-ink); }
.media-frame__caption {
  padding: var(--space-2) var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
  color: var(--color-ink-soft);
  font-size: var(--text-xs);
}
.data-visual {
  position: relative;
  min-height: 180px;
  overflow: hidden;
  background: var(--color-contrast-surface);
  border: var(--border-thin) solid var(--color-ink);
}
.data-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, var(--color-contrast-line) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, var(--color-contrast-line) 0 1px, transparent 1px 44px);
  opacity: 0.7;
}
.data-visual::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 22%;
  width: 72%;
  height: 6px;
  background: linear-gradient(90deg, var(--color-contrast-accent), transparent);
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thick) solid var(--color-primary);
}
.site-footer a { color: var(--color-contrast-ink); }
.site-footer a:hover { color: var(--color-contrast-accent); }
.footer-inner { padding-block: var(--space-8) var(--space-6); }
.footer-rows { display: flex; flex-direction: column; }
.footer-row {
  display: grid;
  grid-template-columns: auto minmax(120px, 190px) minmax(0, 1fr);
  gap: var(--space-2) var(--space-4);
  align-items: start;
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}
.footer-row:last-child { border-bottom: var(--border-thin) solid var(--color-contrast-line); }
.footer-row__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-accent);
}
.footer-row__title {
  margin: 0;
  font-size: var(--text-lg);
  letter-spacing: 0.06em;
}
.footer-row__body p { margin: 0 0 var(--space-2); max-width: var(--measure); }
.footer-row__body p:last-child { margin-bottom: 0; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-links li { margin: 0; }
.footer-mark {
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}
.footer-mark__word {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 0.98;
  letter-spacing: -0.01em;
  color: var(--color-contrast-accent);
}
.footer-mark__sub {
  margin: var(--space-2) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, var(--color-contrast-surface));
}

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed;
  right: var(--space-3);
  bottom: var(--space-3);
  z-index: 85;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border: var(--border-thin) solid var(--color-ink);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
}
.to-top.is-visible { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--color-primary-soft); border-color: var(--color-primary); color: var(--color-primary); }

/* ---------- 显现 ---------- */
html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
html.has-js [data-reveal].is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html.has-js [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* ---------- 平板 ---------- */
@media (max-width: 1024px) {
  .site-header__inner { min-height: 76px; gap: var(--space-2); }
  .site-nav__link { padding: 10px 9px; }
  .col-3, .col-4, .col-5 { grid-column: span 6; }
  .col-7, .col-8, .col-9 { grid-column: span 12; }
}

/* ---------- 移动 ---------- */
@media (max-width: 960px) {
  .site-header__inner {
    flex-wrap: wrap;
    align-items: flex-start;
    padding-block: var(--space-2);
  }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  html:not(.has-js) .nav-toggle { display: none; }
  .site-nav {
    flex: 1 1 100%;
    width: 100%;
    overflow: visible;
  }
  html.has-js .site-nav { display: none; }
  html.has-js .site-nav[data-open] {
    display: block;
    padding-top: var(--space-2);
    border-top: var(--border-thin) solid var(--color-line);
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    min-width: 0;
    padding-bottom: 0;
    gap: 0;
  }
  .site-nav__link {
    padding: 14px 12px;
    font-size: var(--text-lg);
    border-bottom: 1px solid var(--color-line);
    border-radius: 0;
  }
  .site-nav__link[aria-current="page"] { text-underline-offset: 4px; }
  .score-strip__inner { gap: var(--space-2); }
  .score-strip__sync { display: none; }
  .score-card__minute { display: none; }
  .footer-row { grid-template-columns: auto minmax(0, 1fr); }
  .footer-row__title { align-self: center; }
  .footer-row__body { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; gap: var(--space-3); }
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-12 { grid-column: 1 / -1; }
  .brand__name { font-size: var(--text-lg); }
  .brand__tagline { font-size: var(--text-xs); }
  .chapter { grid-template-columns: auto minmax(0, 1fr); }
  .chapter__num { font-size: var(--text-2xl); }
  .footer-inner { padding-block: var(--space-6) var(--space-4); }
  .to-top { right: var(--space-2); bottom: var(--space-2); padding: 8px 12px; }
}