:root {
  --color-surface: #f0f0ef;
  --color-surface-alt: #e8e7e6;
  --color-surface-deep: #dcdbda;
  --color-ink: #49423c;
  --color-ink-soft: #6f665d;
  --color-ink-muted: #897f76;
  --color-line: #d2d1cf;
  --color-primary: #9e6938;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e5ddd5;
  --color-accent: #d22d40;
  --color-accent-ink: #ffffff;
  --color-highlight: #ebcdd0;
  --color-focus: #d11f32;
  --color-contrast-surface: #211b16;
  --color-contrast-ink: #e7e5e4;
  --color-contrast-line: #4d4743;
  --color-contrast-accent: #db5766;
  --overlay-scrim: linear-gradient(180deg, rgba(33, 27, 22, 0.35) 0%, rgba(33, 27, 22, 0.72) 55%, rgba(33, 27, 22, 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(35px, 7.2vw, 92px);
  --text-figure: clamp(29px, 5.2vw, 66px);
  --weight-heading: 646;
  --weight-body: 400;
  --leading-body: 1.83;
  --leading-heading: 1.26;
  --tracking-heading: -0.008em;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 17px;
  --radius-pill: 999px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: 0 6px 18px rgba(73, 66, 60, 0.08);
  --shadow-2: 0 18px 44px rgba(73, 66, 60, 0.14);
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1100px;
  --measure: 73ch;
  --gutter: 24px;
  --section-y: 91px;
  --section-y-lg: 127px;
}

/* ============ 重置与基底 ============ */
*,
*::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);
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(color-mix(in srgb, var(--color-ink) 6%, transparent) 0.5px, transparent 0.5px),
    radial-gradient(color-mix(in srgb, var(--color-ink) 4%, transparent) 0.5px, transparent 0.5px);
  background-size: 3px 3px, 7px 7px;
  background-position: 0 0, 2px 3px;
  opacity: 0.6;
}

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

figure { margin: 0; }

button { font-family: inherit; }

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

p { margin: 0; }

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

/* ============ 容器与纵向节奏 ============ */
.shell {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.slab {
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-3);
}
@media (min-width: 760px) {
  .slab { padding: var(--space-8); }
}
.slab--warm { background-color: var(--color-primary-soft); }
.slab--alt { background-color: var(--color-surface-alt); }
.slab--deep {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.slab--deep h1,
.slab--deep h2,
.slab--deep h3 { color: var(--color-contrast-ink); }
.slab--deep .eyebrow { color: var(--color-contrast-accent); }
.slab--deep .section-sub,
.slab--deep .lede { color: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent); }

/* ============ 题头与文字层级 ============ */
.section-head {
  max-width: 62ch;
  margin-bottom: var(--space-4);
}

.eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.section-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-2);
}

.section-sub {
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
  max-width: 58ch;
}

.display-title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0;
}

.figure-value {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}

.lede {
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.caption,
.prose figcaption {
  font-size: var(--text-xs);
  font-style: italic;
  color: var(--color-ink-muted);
}

/* ============ 正文长读容器 ============ */
.prose {
  max-width: var(--measure);
  color: var(--color-ink);
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-size: var(--text-2xl); margin-top: 1.6em; }
.prose h3 { font-size: var(--text-xl); margin-top: 1.4em; }
.prose ul,
.prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: 0.4em; }
.prose a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.prose strong { font-weight: 600; }
.prose blockquote {
  margin: 0;
  padding-left: var(--space-3);
  border-left: 4px solid var(--color-primary);
  color: var(--color-ink-soft);
}
.prose hr {
  border: 0;
  height: var(--space-4);
}

.rule-block {
  position: relative;
  padding-left: var(--space-3);
}
.rule-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  bottom: 0.3em;
  width: 4px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
}
.rule-block--accent::before { background-color: var(--color-accent); }

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

.rail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
  gap: var(--space-6);
  align-items: start;
}
.rail__aside {
  position: sticky;
  top: 96px;
  display: grid;
  gap: var(--space-3);
}

/* ============ 跳转链接 ============ */
.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -64px;
  z-index: 120;
  display: inline-block;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: top 200ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.skip-link:focus { top: var(--space-2); }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 12px 22px;
  border: 0;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-1);
  transition: background-color 200ms cubic-bezier(0.22, 0.61, 0.36, 1),
    color 200ms cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 200ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.btn:hover {
  background-color: color-mix(in srgb, var(--color-primary) 86%, var(--color-contrast-surface));
  transform: translateY(-1px);
}
.btn:active { transform: translateY(0); }

.btn--quiet {
  background-color: var(--color-primary-soft);
  color: var(--color-ink);
  box-shadow: none;
}
.btn--quiet:hover { background-color: color-mix(in srgb, var(--color-primary-soft) 84%, var(--color-primary)); }

.btn--deep {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.btn--deep:hover { background-color: color-mix(in srgb, var(--color-contrast-surface) 80%, var(--color-contrast-ink)); }

.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  box-shadow: inset 0 0 0 var(--border-thin) var(--color-primary);
}
.btn--outline:hover { background-color: var(--color-primary-soft); }

.btn--sm { padding: 8px 16px; font-size: var(--text-xs); }
.btn--block { width: 100%; }

/* ============ 顶端条 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background-color: var(--color-surface);
  transition: box-shadow 240ms cubic-bezier(0.22, 0.61, 0.36, 1),
    background-color 240ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.site-header[data-condensed] {
  background-color: var(--color-surface-alt);
  box-shadow: var(--shadow-1);
}

.site-header__progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  pointer-events: none;
}
.site-header__progress-bar {
  display: block;
  height: 100%;
  width: 0;
  border-radius: var(--radius-pill);
  background-color: var(--color-accent);
  transition: width 120ms linear;
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 72px;
  transition: min-height 240ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.site-header[data-condensed] .site-header__inner { min-height: 58px; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding-block: 10px;
  text-decoration: none;
  color: inherit;
  flex: 0 0 auto;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.02em;
}
.brand__name {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: 1.2;
}
.brand__meta {
  display: block;
  font-size: var(--text-xs);
  font-style: italic;
  color: var(--color-ink-muted);
}
.site-header[data-condensed] .brand__meta { display: none; }

.site-header__current {
  display: none;
  align-items: center;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-ink-soft);
  font-size: var(--text-xs);
  white-space: nowrap;
}
.site-header__current:empty { display: none; }
.site-header[data-condensed] .site-header__current { display: inline-flex; }

.site-nav { margin-inline-start: auto; }
.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.3vw, 20px);
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 2px;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color 200ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  bottom: 2px;
  height: 2px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 240ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.site-nav__link:hover { color: var(--color-ink); }
.site-nav__link:hover::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] {
  color: var(--color-ink);
  font-weight: 600;
}
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background-color: var(--color-primary);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-inline-start: var(--space-2);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  padding: 9px 15px;
  border: 0;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-ink);
  font-size: var(--text-sm);
  cursor: pointer;
}
.nav-toggle__bars { display: grid; gap: 4px; }
.nav-toggle__bars i {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background-color: currentColor;
  transition: transform 240ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child { transform: translateY(3px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child { transform: translateY(-3px) rotate(-45deg); }

.site-header__scrim {
  position: fixed;
  inset: 0;
  z-index: 85;
  background-color: color-mix(in srgb, var(--color-contrast-surface) 62%, transparent);
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.site-header__scrim[data-open] {
  opacity: 1;
  pointer-events: auto;
}

/* ============ 抽屉导航 ============ */
.drawer {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  width: min(86vw, 350px);
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-3);
  overflow-y: auto;
  background-color: var(--color-surface);
  box-shadow: var(--shadow-2);
  border-start-start-radius: var(--radius-lg);
  border-end-start-radius: var(--radius-lg);
  visibility: hidden;
  transform: translateX(104%);
  transition: transform 320ms cubic-bezier(0.22, 0.61, 0.36, 1),
    visibility 320ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.drawer[data-open] {
  visibility: visible;
  transform: translateX(0);
}
.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.drawer__label {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
}
.drawer__close {
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: var(--radius-pill);
  background-color: var(--color-surface-deep);
  color: var(--color-ink);
  font-size: var(--text-lg);
  line-height: 1;
  cursor: pointer;
}
.drawer__group { display: grid; gap: var(--space-1); }
.drawer__title {
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 600;
}
.drawer__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}
.drawer__link {
  display: block;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-alt);
  color: var(--color-ink);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: background-color 200ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.drawer__link:hover { background-color: var(--color-primary-soft); }
.drawer__link[aria-current="page"] {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.drawer__note {
  font-size: var(--text-xs);
  font-style: italic;
  color: var(--color-ink-muted);
}
.drawer__foot {
  margin-top: auto;
  display: grid;
  gap: var(--space-1);
}

/* ============ 面包屑 ============ */
.breadcrumbs {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  padding-block: var(--space-3);
}
.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}
.breadcrumbs li { display: inline-flex; align-items: center; }
.breadcrumbs li + li::before {
  content: "/";
  padding-inline: 8px;
  color: color-mix(in srgb, var(--color-ink-muted) 55%, transparent);
}
.breadcrumbs a {
  color: var(--color-ink-soft);
  text-decoration: none;
}
.breadcrumbs a:hover { color: var(--color-primary); }
.breadcrumbs [aria-current="page"] { color: var(--color-ink); }

/* ============ 栏目页首屏骨架 ============ */
.page-head {
  padding-block: var(--section-y) var(--space-6);
}
.page-head__title {
  font-size: var(--text-4xl);
  max-width: 24ch;
  margin-bottom: var(--space-3);
}
.page-head--warm {
  background-color: var(--color-primary-soft);
  border-radius: var(--radius-lg);
}

/* ============ 卡片 ============ */
.card {
  display: grid;
  gap: var(--space-2);
  align-content: start;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-alt);
  box-shadow: var(--shadow-1);
}
.card--warm { background-color: var(--color-primary-soft); }
.card--flat { background-color: var(--color-surface-deep); box-shadow: none; }
.card--deep {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  box-shadow: var(--shadow-2);
}
.card--deep h3 { color: var(--color-contrast-ink); }
.card__label {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 600;
}
.card--deep .card__label { color: var(--color-contrast-accent); }
.card__title { font-size: var(--text-xl); }
.card__meta {
  font-size: var(--text-xs);
  font-style: italic;
  color: var(--color-ink-muted);
}
.card--deep .card__meta { color: color-mix(in srgb, var(--color-contrast-ink) 64%, transparent); }

/* ============ 数字锚点与标签 ============ */
.stat { display: grid; gap: 4px; }
.stat__value {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}
.stat__unit {
  font-size: var(--text-xs);
  font-style: italic;
  color: var(--color-ink-muted);
}
.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-ink-soft);
  font-size: var(--text-xs);
}
.chip--accent {
  background-color: var(--color-highlight);
  color: var(--color-ink);
}

/* ============ 旁注 ============ */
.note {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-deep);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
}
.note--warm { background-color: var(--color-primary-soft); }
.note__title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  color: var(--color-ink);
}

/* ============ 数据表 ============ */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.data-table caption {
  text-align: left;
  padding: var(--space-2) var(--space-2) 0;
  font-size: var(--text-xs);
  font-style: italic;
  color: var(--color-ink-muted);
}
.data-table th {
  padding: 10px 12px;
  text-align: left;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) solid var(--color-line);
}
.data-table td {
  padding: 12px;
  border-bottom: var(--border-thin) solid var(--color-line);
  font-variant-numeric: tabular-nums;
}
.data-table tbody tr:hover td { background-color: var(--color-highlight); }
.data-table .is-hot { background-color: var(--color-highlight); }
.data-table--deep {
  color: var(--color-contrast-ink);
  background-color: var(--color-contrast-surface);
}
.data-table--deep th {
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
  border-bottom-color: var(--color-contrast-line);
}
.data-table--deep td { border-bottom-color: var(--color-contrast-line); }
.data-table--deep tbody tr:hover td { background-color: color-mix(in srgb, var(--color-contrast-accent) 22%, transparent); }

/* ============ 赛季时间轴 ============ */
.track {
  position: relative;
  padding-left: var(--space-4);
  display: grid;
  gap: var(--space-2);
}
.track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: var(--radius-pill);
  background-color: color-mix(in srgb, var(--color-primary) 55%, var(--color-line));
}
.track__item {
  position: relative;
  padding-block: var(--space-1);
}
.track__item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 1.1em;
  width: 12px;
  height: 12px;
  border-radius: var(--radius-pill);
  background-color: var(--color-surface);
  box-shadow: inset 0 0 0 2px var(--color-primary);
  transition: transform 240ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.track__item--current::before {
  background-color: var(--color-accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-accent) 22%, transparent);
  transform: scale(1.04);
}

/* ============ 图片容器 ============ */
.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-deep);
  box-shadow: var(--shadow-1);
}
.media-frame img,
.media-frame picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.68) contrast(1.04) sepia(0.2);
}
.media-frame--warm img { filter: saturate(0.6) sepia(0.38) hue-rotate(-6deg); }
.media-frame--deep { background-color: var(--color-contrast-surface); }
.media-frame--deep img { filter: grayscale(0.3) brightness(0.76) sepia(0.24) saturate(0.82); }

.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--3x4 { aspect-ratio: 3 / 4; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--21x9 { aspect-ratio: 21 / 9; }

.media-frame__placeholder {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(135deg,
      color-mix(in srgb, var(--color-primary) 34%, var(--color-surface-deep)) 0%,
      color-mix(in srgb, var(--color-contrast-surface) 78%, var(--color-primary)) 100%);
}

.media-frame__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  padding: var(--space-3);
  background-image: var(--overlay-scrim);
  color: var(--color-contrast-ink);
}
.media-frame__caption {
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: var(--space-2);
  font-size: var(--text-xs);
  font-style: italic;
  color: var(--color-contrast-ink);
}

/* ============ 可展开内容组 ============ */
.disclosure {
  border-radius: var(--radius-md);
  background-color: var(--color-surface-alt);
  overflow: hidden;
}
.disclosure + .disclosure { margin-top: var(--space-2); }
.disclosure__heading { margin: 0; font-size: var(--text-lg); }
.disclosure__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3);
  border: 0;
  background: none;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  text-align: left;
  cursor: pointer;
  transition: color 200ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.disclosure__trigger[aria-expanded="true"] { color: var(--color-primary); }
.disclosure__icon {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
}
.disclosure__icon::before,
.disclosure__icon::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  top: 50%;
  height: 2px;
  border-radius: 2px;
  background-color: var(--color-primary);
  transform: translateY(-50%);
  transition: transform 240ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.disclosure__icon::after { transform: translateY(-50%) rotate(90deg); }
.disclosure__trigger[aria-expanded="true"] .disclosure__icon::after { transform: translateY(-50%) rotate(0deg); }
.disclosure__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 320ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.disclosure__panel-inner {
  padding: 0 var(--space-3) var(--space-3);
  max-width: var(--measure);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
}
.disclosure__panel-inner > * + * { margin-top: 0.9em; }

/* ============ 分段控件 ============ */
.segments { display: grid; }
.segments__bar {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 5px;
  border-radius: var(--radius-pill);
  background-color: var(--color-surface-deep);
  justify-self: start;
}
.segments__btn {
  padding: 8px 18px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background-color 200ms cubic-bezier(0.22, 0.61, 0.36, 1),
    color 200ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.segments__btn:hover { color: var(--color-ink); }
.segments__btn[aria-selected="true"] {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-weight: 600;
}
.segments__panels { margin-top: var(--space-4); }
.segments__panel[hidden] { display: none; }

/* ============ 页脚阶梯 ============ */
.site-footer {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-6) var(--gutter) var(--space-6);
}
.footer-slab {
  border-radius: var(--radius-lg);
  padding-block: var(--space-6);
}
.footer-slab--index { background-color: var(--color-primary-soft); }
.footer-slab--service { background-color: var(--color-surface-alt); }
.footer-slab--legal {
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-block: var(--space-4);
}

.footer-index {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-3);
}
.footer-col { display: grid; gap: var(--space-2); align-content: start; }
.footer-col__title {
  font-size: var(--text-base);
  color: var(--color-ink);
}
.footer-col__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-col__link {
  display: inline-block;
  padding-block: 4px;
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: color 200ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.footer-col__link:hover { color: var(--color-primary); }

.city-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}
.city-list__item {
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background-color: color-mix(in srgb, var(--color-surface) 72%, transparent);
  color: var(--color-ink-soft);
  font-size: var(--text-xs);
}

.footer-note {
  font-size: var(--text-xs);
  font-style: italic;
  color: var(--color-ink-muted);
  max-width: 44ch;
}

.footer-service { display: grid; gap: var(--space-2); }
.footer-service__title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
}
.footer-service__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-2) var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-service__item { display: grid; gap: 2px; }
.footer-service__label {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 600;
}
.footer-service__value {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  justify-content: space-between;
}
.footer-brand { display: inline-flex; align-items: center; gap: var(--space-2); }
.footer-brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
}
.footer-brand__text { display: grid; }
.footer-brand__name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}
.footer-brand__meta {
  font-size: var(--text-xs);
  font-style: italic;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}
.footer-legal__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-legal__link {
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  text-decoration: none;
  transition: color 200ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.footer-legal__link:hover { color: var(--color-contrast-accent); }
.footer-legal__meta {
  font-size: var(--text-xs);
  color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent);
  width: 100%;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

/* ============ 悬浮入口 ============ */
.float-dock {
  position: fixed;
  right: var(--space-3);
  bottom: var(--space-3);
  z-index: 70;
  display: grid;
  gap: var(--space-1);
  justify-items: end;
}
.float-dock__link {
  display: none;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-ink);
  font-size: var(--text-sm);
  text-decoration: none;
  box-shadow: var(--shadow-1);
}
.float-dock__link:hover { background-color: var(--color-primary); color: var(--color-primary-ink); }
.float-dock__top {
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: var(--radius-pill);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-lg);
  line-height: 1;
  cursor: pointer;
  box-shadow: var(--shadow-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 240ms cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 240ms cubic-bezier(0.22, 0.61, 0.36, 1),
    visibility 240ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
.float-dock__top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.float-dock__top:hover { background-color: color-mix(in srgb, var(--color-contrast-surface) 78%, var(--color-primary)); }

/* ============ 入场动效 ============ */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 240ms cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 240ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ============ 响应式 ============ */
@media (max-width: 1020px) {
  .site-nav__list { gap: 10px; }
  .site-header__cta { display: none; }
}

@media (max-width: 900px) {
  .site-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .drawer { display: flex; }
  .brand__meta { display: none; }
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-2,
  .col-3 { grid-column: span 3; }
  .col-4,
  .col-5 { grid-column: span 3; }
  .col-6,
  .col-7,
  .col-8,
  .col-9,
  .col-12 { grid-column: span 6; }
  .rail { grid-template-columns: minmax(0, 1fr); gap: var(--space-4); }
  .rail__aside { position: static; }
  .footer-index { grid-template-columns: minmax(0, 1fr); gap: var(--space-4); }
  .footer-col__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 600px) {
  .float-dock__link { display: inline-block; }
}

@media (max-width: 600px) {
  :root { --section-y: 64px; --section-y-lg: 88px; --gutter: 18px; }
  .grid { grid-template-columns: minmax(0, 1fr); }
  .col-2,
  .col-3,
  .col-4,
  .col-5,
  .col-6,
  .col-7,
  .col-8,
  .col-9,
  .col-12 { grid-column: span 1; }
  .footer-col__list { grid-template-columns: minmax(0, 1fr); }
  .footer-legal { gap: var(--space-2); }
  .page-head__title { font-size: var(--text-3xl); }
  .site-header__current { display: none !important; }
  .float-dock { right: var(--space-2); bottom: var(--space-2); }
}

/* ============ 减弱动效 ============ */
@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;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
  .site-header__progress-bar { transition: none; }
}