:root {
  --color-surface: #f4f4f3;
  --color-surface-alt: #ecebea;
  --color-surface-deep: #e0dfdd;
  --color-ink: #4a463b;
  --color-ink-soft: #716b5b;
  --color-ink-muted: #8c8573;
  --color-line: #d5d5d2;
  --color-primary: #857347;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e4e2db;
  --color-accent: #6a7d07;
  --color-accent-ink: #ffffff;
  --color-highlight: #dbdfc9;
  --color-focus: #627500;
  --color-contrast-surface: #27241e;
  --color-contrast-ink: #e7e6e4;
  --color-contrast-line: #514f4a;
  --color-contrast-accent: #ccf10e;
  --overlay-scrim: linear-gradient(180deg, rgba(39, 36, 30, 0.35) 0%, rgba(39, 36, 30, 0.72) 55%, rgba(39, 36, 30, 0.92) 100%);
  --font-heading: "Songti SC", "Source Han Serif SC", "Noto Serif SC", SimSun, serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
  --text-xs: 12.2px;
  --text-sm: 14.6px;
  --text-base: 16px;
  --text-lg: 19.2px;
  --text-xl: 23.0px;
  --text-2xl: 27.6px;
  --text-3xl: 33.2px;
  --text-4xl: 39.8px;
  --text-display: clamp(37px, 7.7vw, 98px);
  --text-figure: clamp(31px, 5.5vw, 71px);
  --weight-heading: 639;
  --weight-body: 400;
  --leading-body: 1.82;
  --leading-heading: 1.17;
  --tracking-heading: -0.01em;
  --radius-sm: 4px;
  --radius-md: 4px;
  --radius-lg: 4px;
  --radius-pill: 4px;
  --border-thin: 1px;
  --border-thick: 2px;
  --shadow-1: 0 1px 0 rgba(74, 70, 59, 0.12);
  --shadow-2: 0 2px 0 rgba(74, 70, 59, 0.18);
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1140px;
  --measure: 74ch;
  --gutter: 32px;
  --section-y: 81px;
  --section-y-lg: 113px;
}

/* ------------------------------------------------------------------
   1 · 重置与中文排版基线
------------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 128px;
}

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;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

h1, h2, h3, h4, h5 {
  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: var(--color-ink);
}
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); max-width: var(--measure); }

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

a { color: inherit; text-decoration: none; transition: color 0.18s ease; }
a:hover { color: var(--color-accent); }

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

svg { fill: currentColor; }

hr {
  border: 0;
  height: 1px;
  background: var(--color-line);
  margin: var(--space-6) 0;
}

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

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

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

/* ------------------------------------------------------------------
   2 · 布局容器 / 栅格 / 文字工具
------------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.section { padding-block: var(--section-y); }
.section--lg { padding-block: var(--section-y-lg); }
.section--tight { padding-block: var(--space-6); }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}
.grid--tight { gap: var(--space-3); }
.grid--loose { gap: var(--space-6); }

.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; }

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

.lead {
  font-size: var(--text-lg);
  line-height: 1.66;
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin-bottom: var(--space-2);
}

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

/* ------------------------------------------------------------------
   3 · 纸片层叠（核心材质）
------------------------------------------------------------------ */
.sheet {
  position: relative;
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-2), 8px 8px 0 var(--color-surface-deep);
}
.sheet--tight {
  padding: var(--space-3);
  box-shadow: var(--shadow-1), 6px 6px 0 var(--color-surface-deep);
}
.sheet--deep {
  background: var(--color-surface-deep);
  box-shadow: var(--shadow-2), 8px 8px 0 var(--color-primary-soft);
}
.sheet--plain {
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
}
.sheet--night {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  box-shadow: var(--shadow-2), 8px 8px 0 var(--color-primary-soft);
}
.sheet--tilt { transform: rotate(-0.5deg); }

.sheet__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-3);
  margin-bottom: var(--space-3);
}
.sheet__head h2, .sheet__head h3 { margin-bottom: 0; }

/* ------------------------------------------------------------------
   4 · 贴纸标签
------------------------------------------------------------------ */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  line-height: 1.4;
  white-space: nowrap;
  background: var(--color-primary);
  color: var(--color-primary-ink);
}
.tag--sticker {
  transform: rotate(-1deg);
  box-shadow: var(--shadow-2);
}
.tag--corner {
  position: absolute;
  top: calc(var(--space-2) * -1);
  left: var(--space-3);
  z-index: 2;
}
.tag--accent { background: var(--color-accent); color: var(--color-accent-ink); }
.tag--soft { background: var(--color-highlight); color: var(--color-ink); }
.tag--deep { background: var(--color-contrast-surface); color: var(--color-contrast-accent); }
.tag--primary { background: var(--color-primary-soft); color: var(--color-ink); }

/* ------------------------------------------------------------------
   5 · 按钮
------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  background: var(--color-primary);
  color: var(--color-primary-ink);
  box-shadow: var(--shadow-2);
  transition: transform 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}
.btn:hover {
  color: var(--color-primary-ink);
  background: color-mix(in srgb, var(--color-primary) 84%, var(--color-ink));
  transform: translate(-1px, -1px);
}
.btn--accent { background: var(--color-accent); color: var(--color-accent-ink); }
.btn--accent:hover {
  color: var(--color-accent-ink);
  background: color-mix(in srgb, var(--color-accent) 84%, var(--color-ink));
}
.btn--ghost {
  background: transparent;
  color: var(--color-ink);
  box-shadow: inset 0 0 0 var(--border-thin) var(--color-line);
}
.btn--ghost:hover {
  color: var(--color-ink);
  background: var(--color-surface-alt);
  box-shadow: inset 0 0 0 var(--border-thin) var(--color-primary);
}
.btn--night {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}
.btn--night:hover {
  color: var(--color-contrast-surface);
  background: color-mix(in srgb, var(--color-contrast-accent) 78%, var(--color-contrast-ink));
}

/* ------------------------------------------------------------------
   6 · 左侧竖线强调 / 深色区块
------------------------------------------------------------------ */
.rule {
  position: relative;
  padding-left: var(--space-3);
}
.rule::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  bottom: 0.3em;
  width: 3px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
}
.rule--primary::before { background: var(--color-primary); }

.deep {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.deep h1, .deep h2, .deep h3, .deep h4 { color: var(--color-contrast-ink); }
.deep p, .deep li { color: color-mix(in srgb, var(--color-contrast-ink) 80%, transparent); }
.deep a { color: var(--color-contrast-ink); }
.deep a:hover { color: var(--color-contrast-accent); }
.deep .lead { color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent); }

/* ------------------------------------------------------------------
   7 · 图片衬纸框与遮罩
------------------------------------------------------------------ */
.frame {
  position: relative;
  padding: var(--space-2);
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-2), 6px 6px 0 var(--color-surface-deep);
}
.frame > img,
.frame > picture > img,
.frame > .frame__media {
  width: 100%;
  border-radius: var(--radius-sm);
  background: var(--color-surface-deep);
  object-fit: cover;
}
.frame--tilt { transform: rotate(-0.6deg); }
.frame--night {
  background: var(--color-contrast-surface);
  box-shadow: var(--shadow-2), 6px 6px 0 var(--color-primary-soft);
}
.frame--plain { box-shadow: var(--shadow-1); }

.frame__caption {
  margin: var(--space-2) 0 0;
  padding-top: var(--space-1);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-soft);
  max-width: none;
}
.frame--night .frame__caption { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); }

.overlay {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-sm);
  isolation: isolate;
}
.overlay::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  z-index: 1;
}
.overlay > * { position: relative; z-index: 2; }
.overlay img { width: 100%; }

/* ------------------------------------------------------------------
   8 · 数值组件
------------------------------------------------------------------ */
.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-2xl);
  line-height: 1.1;
  color: var(--color-ink);
}
.stat__label {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-soft);
}
.stat--accent .stat__value { color: var(--color-accent); }
.deep .stat__value { color: var(--color-contrast-accent); }
.deep .stat__label { color: color-mix(in srgb, var(--color-contrast-ink) 60%, transparent); }

.hero-title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.06;
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-3);
}
.hero-figure {
  display: inline-block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-figure);
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0;
}
.hero-figure--glow { color: var(--color-contrast-accent); }

.band {
  display: flex;
  gap: 2px;
  height: 10px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-surface-deep);
}
.band__seg {
  flex: 1 1 0;
  background: var(--color-surface-deep);
  transition: opacity 0.2s ease, background-color 0.2s ease;
}
.band__seg--1 { background: color-mix(in srgb, var(--color-accent) 18%, var(--color-surface-deep)); }
.band__seg--2 { background: color-mix(in srgb, var(--color-accent) 38%, var(--color-surface-deep)); }
.band__seg--3 { background: color-mix(in srgb, var(--color-accent) 58%, var(--color-surface-deep)); }
.band__seg--4 { background: color-mix(in srgb, var(--color-accent) 78%, var(--color-surface-deep)); }
.band__seg--5 { background: var(--color-accent); }
.band.is-filtered .band__seg:not(.is-on) { opacity: 0.28; }
.deep .band { background: color-mix(in srgb, var(--color-contrast-ink) 16%, transparent); }

/* ------------------------------------------------------------------
   9 · 面包屑 / 正文排版
------------------------------------------------------------------ */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  margin-bottom: var(--space-4);
}
.breadcrumb li { display: inline-flex; align-items: center; gap: var(--space-1); }
.breadcrumb li + li::before {
  content: "/";
  color: var(--color-ink-muted);
}
.deep .breadcrumb { color: color-mix(in srgb, var(--color-contrast-ink) 60%, transparent); }

.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, .prose li { max-width: var(--measure); }
.prose ul, .prose ol { margin: 0 0 var(--space-3); padding-left: var(--space-3); list-style: disc; }
.prose li { margin-bottom: var(--space-1); }

/* ------------------------------------------------------------------
   10 · 滚动显现
------------------------------------------------------------------ */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ------------------------------------------------------------------
   11 · 顶部记分牌式头部
------------------------------------------------------------------ */
.skip-link {
  position: absolute;
  left: var(--space-3);
  top: var(--space-2);
  z-index: 200;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-2);
  transform: translateY(-180%);
  transition: transform 0.18s ease;
}
.skip-link:focus {
  transform: translateY(0);
  color: var(--color-contrast-accent);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--color-surface);
  box-shadow: var(--shadow-2);
}

.scoreboard {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.scoreboard__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  max-width: var(--container);
  min-height: 46px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}
.scoreboard__label {
  flex: 0 0 auto;
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  color: color-mix(in srgb, var(--color-contrast-ink) 58%, transparent);
  white-space: nowrap;
}
.league-switch {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1 1 auto;
  overflow-x: auto;
  scrollbar-width: none;
  padding-block: 6px;
}
.league-switch::-webkit-scrollbar { display: none; }
.league-chip {
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  white-space: nowrap;
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
  background: color-mix(in srgb, var(--color-contrast-ink) 9%, transparent);
  transition: background-color 0.18s ease, color 0.18s ease;
}
.league-chip:hover {
  color: var(--color-contrast-accent);
  background: color-mix(in srgb, var(--color-contrast-accent) 20%, transparent);
}
.league-chip[aria-pressed="true"],
.league-chip.is-active {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-contrast-surface);
  background: var(--color-contrast-accent);
}
.scoreboard__meta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-contrast-accent);
  white-space: nowrap;
}
.scoreboard__pulse {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-sm);
  background: var(--color-contrast-accent);
}

.masthead { position: relative; background: var(--color-surface); }
.masthead__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--space-2) var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
}
.brand:hover { color: inherit; }
.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 7px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  box-shadow: var(--shadow-2);
}
.brand__text { display: flex; flex-direction: column; }
.brand__name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  letter-spacing: var(--tracking-heading);
}
.brand__line {
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
  letter-spacing: 0.06em;
}

.primary-nav { margin-left: auto; }
.primary-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.primary-nav__link {
  position: relative;
  display: inline-block;
  padding: 6px 2px;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
}
.primary-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  transition: right 0.22s ease;
}
.primary-nav__link:hover { color: var(--color-ink); }
.primary-nav__link:hover::after { right: 0; }
.primary-nav__link[aria-current="page"] {
  color: var(--color-ink);
  font-weight: 600;
}
.primary-nav__link[aria-current="page"]::after { right: 0; }

.masthead__tools {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
}
.masthead__tag { align-self: center; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  color: var(--color-ink);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-1);
}
.nav-toggle:hover { background: var(--color-surface-deep); }
.nav-toggle__icon {
  width: 16px;
  height: 2px;
  background: currentColor;
  box-shadow: 0 -5px 0 currentColor, 0 5px 0 currentColor;
}
.nav-toggle[aria-expanded="true"] { color: var(--color-accent); }

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

@keyframes nav-panel-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ------------------------------------------------------------------
   12 · 页脚
------------------------------------------------------------------ */
.site-footer {
  position: relative;
  margin-top: var(--section-y-lg);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.site-footer a { color: color-mix(in srgb, var(--color-contrast-ink) 80%, transparent); }
.site-footer a:hover { color: var(--color-contrast-accent); }

.footer__inner {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
  padding-block: var(--section-y) var(--space-6);
}
.footer__col { position: relative; }
.footer__title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-contrast-ink) 54%, transparent);
}
.footer__links {
  display: grid;
  gap: var(--space-2);
  font-size: var(--text-sm);
}
.footer__links a { display: inline-block; padding-block: 2px; }
.footer__contact {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.95;
  max-width: 34ch;
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
}
.footer__contact span { display: block; }

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-4);
  padding-block: var(--space-4) var(--space-6);
}
.footer__legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--text-sm);
}
.footer__fine {
  margin: 0;
  max-width: none;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-contrast-ink) 52%, transparent);
}

.footer__bigword { padding-bottom: var(--space-8); }
.bigword {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: clamp(calc(var(--text-4xl) * 1.4), 13vw, calc(var(--text-4xl) * 3.4));
  line-height: 0.92;
  letter-spacing: -0.03em;
  white-space: nowrap;
}
.bigword__num {
  font-family: var(--font-mono);
  color: var(--color-contrast-accent);
}
.bigword__cn { color: color-mix(in srgb, var(--color-contrast-ink) 40%, transparent); }
.bigword__line {
  margin: var(--space-3) 0 0;
  max-width: none;
  font-size: var(--text-sm);
  letter-spacing: 0.24em;
  color: color-mix(in srgb, var(--color-contrast-ink) 58%, transparent);
}

/* ------------------------------------------------------------------
   13 · 响应式
------------------------------------------------------------------ */
@media (max-width: 1080px) {
  .brand__line { display: none; }
  .primary-nav__list { gap: var(--space-2); }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 104px; }

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

  .sheet { box-shadow: var(--shadow-2), 5px 5px 0 var(--color-surface-deep); }
  .sheet--deep { box-shadow: var(--shadow-2), 5px 5px 0 var(--color-primary-soft); }
  .sheet--night { box-shadow: var(--shadow-2), 5px 5px 0 var(--color-primary-soft); }

  .nav-toggle { display: inline-flex; }

  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    margin: 0;
    padding: var(--space-2) var(--space-4) var(--space-4);
    background: var(--color-surface);
    box-shadow: var(--shadow-2), 0 6px 0 var(--color-surface-deep);
  }
  .primary-nav[data-open] {
    display: block;
    animation: nav-panel-in 0.2s ease both;
  }
  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .primary-nav__link {
    display: block;
    padding: var(--space-2) 0;
    font-size: var(--text-base);
    color: var(--color-ink);
  }
  .primary-nav__link::after { display: none; }
  .primary-nav__link[aria-current="page"] { color: var(--color-accent); }

  .footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__inner > .footer__col:last-child { grid-column: span 2; }
}

@media (max-width: 640px) {
  .container,
  .scoreboard__inner,
  .masthead__inner { padding-inline: var(--space-2); }

  .scoreboard__inner { min-height: 42px; gap: var(--space-2); }
  .scoreboard__label,
  .scoreboard__meta { display: none; }

  .masthead__inner { gap: var(--space-2); }
  .masthead__tag,
  .masthead__tools .btn--ghost { display: none; }
  .brand__name { font-size: var(--text-lg); }

  .section { padding-block: var(--space-6); }
  .section--lg { padding-block: var(--space-8); }
  .sheet { padding: var(--space-3); }

  .footer__inner { grid-template-columns: minmax(0, 1fr); gap: var(--space-4); }
  .footer__inner > .footer__col:last-child { grid-column: auto; }
  .footer__bigword { padding-bottom: var(--space-6); }
  .bigword__line { letter-spacing: 0.12em; }
}

/* ------------------------------------------------------------------
   14 · 动效降级
------------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .primary-nav[data-open] { animation: none; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}