/* ==========================================================================
   杏运平台 · 共享样式表  /assets/site.css
   蓝图网格底 · 悬浮胶囊导航 · 杏果橙与杏叶青双主色
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol, pre { margin: 0; padding: 0; }

ul, ol { list-style: none; }

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

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

a { color: inherit; text-decoration: none; }

address { font-style: normal; }

table { border-collapse: collapse; border-spacing: 0; }

summary { list-style: none; }
summary::-webkit-details-marker { display: none; }

/* ---------- 2. 设计令牌 ---------- */
:root {
  --c-apricot: #F28C28;
  --c-apricot-deep: #C96A15;
  --c-apricot-soft: #FDEBD7;

  --c-leaf: #5B8C5A;
  --c-leaf-deep: #3F6B3F;
  --c-leaf-soft: #E7F0E5;

  --c-cream: #FBF7F0;
  --c-sand: #F3EADD;
  --c-white: #FFFFFF;

  --c-ink: #2E2A26;
  --c-ink-soft: #6B6360;

  --c-line: #E2D8CB;
  --c-line-strong: #CFC2B0;
  --c-sun: #F7C948;

  --rgb-line: 226, 216, 203;

  --radius: 8px;
  --radius-lg: 14px;

  --shadow-1: 0 1px 2px rgba(46, 42, 38, .07);
  --shadow-2: 0 1px 2px rgba(46, 42, 38, .07), 0 8px 24px rgba(46, 42, 38, .09);

  --font-heading: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --page-max: 1240px;
  --page-wide: 1440px;
  --gutter: clamp(18px, 4vw, 44px);
}

/* ---------- 3. 页面基底 ---------- */
body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--c-ink);
  background-color: var(--c-cream);
  background-image:
    linear-gradient(90deg, rgba(var(--rgb-line), .42) 1px, transparent 1px),
    linear-gradient(180deg, rgba(var(--rgb-line), .42) 1px, transparent 1px);
  background-size: 40px 40px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -.01em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.2rem, 5vw, 4.2rem); line-height: 1.08; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.4rem); }
h3 { font-size: 1.125rem; font-weight: 700; line-height: 1.4; text-wrap: normal; }
h4 { font-size: 1rem; font-weight: 700; line-height: 1.5; text-wrap: normal; }

p { text-wrap: pretty; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

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

:focus-visible {
  outline: 2px solid var(--c-sun);
  outline-offset: 2px;
}

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

.text-soft { color: var(--c-ink-soft); }
.text-leaf { color: var(--c-leaf-deep); }
.text-apricot { color: var(--c-apricot-deep); }

/* ---------- 4. 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container-wide { max-width: var(--page-wide); }

.section { padding-block: clamp(56px, 8vw, 112px); }
.section--tight { padding-block: clamp(32px, 5vw, 64px); }
.section--loose { padding-block: clamp(72px, 10vw, 152px); }

.section--sand {
  background: var(--c-sand);
  border-block: 1px solid var(--c-line);
}

.section--ink {
  background: var(--c-ink);
  color: var(--c-cream);
}
.section--ink .eyebrow { color: var(--c-sun); }
.section--ink .section-head p { color: rgba(251, 247, 240, .78); }

.section-head {
  display: grid;
  gap: 16px;
  max-width: 780px;
  margin-bottom: clamp(28px, 4vw, 52px);
}
.section-head--wide { max-width: none; }
.section-head p { font-size: 1.0625rem; color: var(--c-ink-soft); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--c-leaf-deep);
}
.eyebrow::before {
  content: "";
  flex: none;
  width: 22px; height: 2px;
  border-radius: 2px;
  background: var(--c-apricot);
}

.prose { max-width: 68ch; }
.prose > * + * { margin-top: 1em; }
.prose a {
  color: var(--c-apricot-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.prose a:hover { color: var(--c-apricot); }
.prose strong { font-weight: 700; }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .9375rem;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  transition:
    background-color .18s ease-out,
    color .18s ease-out,
    border-color .18s ease-out,
    box-shadow .18s ease-out,
    transform .12s ease-out;
}
.btn:active { transform: scale(.98); }
.btn--sm { padding: 9px 16px; font-size: .875rem; }
.btn--lg { padding: 15px 30px; font-size: 1rem; }

.btn-primary {
  background: var(--c-apricot);
  color: #fff;
  box-shadow: var(--shadow-1);
}
.btn-primary:hover {
  background: var(--c-apricot-deep);
  color: #fff;
  box-shadow: var(--shadow-2);
}

.btn-leaf { background: var(--c-leaf); color: #fff; }
.btn-leaf:hover { background: var(--c-leaf-deep); color: #fff; }

.btn-ghost {
  background: var(--c-white);
  color: var(--c-ink);
  border-color: var(--c-line-strong);
}
.btn-ghost:hover {
  border-color: var(--c-apricot);
  color: var(--c-apricot-deep);
  background: var(--c-apricot-soft);
}

/* ---------- 6. 站点头部 ---------- */
.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 300;
  padding: 10px 18px;
  border-radius: var(--radius);
  background: var(--c-ink);
  color: var(--c-cream);
  font-size: .9375rem;
  font-weight: 700;
  transform: translateY(-220%);
  transition: transform .18s ease-out;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 14px var(--gutter) 0;
  transition: padding .22s ease-out;
}

.header-inner {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.8vw, 26px);
  padding: 10px 12px 10px 16px;
  background: rgba(251, 247, 240, .93);
  -webkit-backdrop-filter: blur(12px) saturate(1.1);
  backdrop-filter: blur(12px) saturate(1.1);
  border: 1px solid var(--c-line);
  border-radius: 999px;
  box-shadow: var(--shadow-1);
  transition:
    padding .22s ease-out,
    box-shadow .22s ease-out,
    border-color .22s ease-out;
}

.site-header[data-scrolled] { padding-top: 8px; }
.site-header[data-scrolled] .header-inner {
  padding-block: 6px;
  box-shadow: var(--shadow-2);
  border-color: var(--c-line-strong);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  padding: 3px 10px 3px 3px;
  border-radius: 999px;
}
.brand-mark {
  width: 40px; height: 40px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(150deg, var(--c-apricot), var(--c-apricot-deep));
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .3);
  transition: transform .18s ease-out;
}
.brand:hover .brand-mark { transform: rotate(-8deg); }
.brand-mark svg { width: 24px; height: 24px; }

.brand-copy { display: flex; flex-direction: column; line-height: 1.22; }
.brand-name {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 900;
  letter-spacing: .01em;
  color: var(--c-ink);
}
.brand-tagline {
  font-size: .6875rem;
  letter-spacing: .06em;
  color: var(--c-ink-soft);
  white-space: nowrap;
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
  min-width: 0;
}
.nav-list { display: flex; align-items: center; gap: 2px; }
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 9px 13px;
  border-radius: 999px;
  font-size: .9375rem;
  font-weight: 500;
  color: var(--c-ink-soft);
  white-space: nowrap;
  transition: color .18s ease-out, background-color .18s ease-out;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 13px; right: 13px; bottom: 5px;
  height: 2px;
  border-radius: 2px;
  background: var(--c-apricot);
  transform: scaleX(0);
  transition: transform .18s ease-out;
}
.nav-link:hover { color: var(--c-ink); background: rgba(242, 140, 40, .09); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link[aria-current="page"] {
  color: var(--c-apricot-deep);
  font-weight: 700;
  background: var(--c-apricot-soft);
}
.nav-link[aria-current="page"]::after { transform: scaleX(1); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}
.quick-link {
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--c-leaf-deep);
  white-space: nowrap;
  transition: background-color .18s ease-out, border-color .18s ease-out, color .18s ease-out;
}
.quick-link:hover {
  background: var(--c-leaf-soft);
  border-color: var(--c-leaf);
  color: var(--c-leaf-deep);
}
.header-cta { padding: 10px 20px; font-size: .875rem; }

.menu-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 10px 16px;
  border: 1px solid var(--c-line-strong);
  border-radius: 999px;
  background: var(--c-white);
  font-size: .875rem;
  font-weight: 700;
  color: var(--c-ink);
  cursor: pointer;
  transition: border-color .18s ease-out, color .18s ease-out, background-color .18s ease-out;
}
.menu-toggle:hover {
  border-color: var(--c-apricot);
  color: var(--c-apricot-deep);
  background: var(--c-apricot-soft);
}
.menu-toggle-icon { display: grid; gap: 4px; width: 18px; flex: none; }
.menu-toggle-icon span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .2s ease-out, opacity .2s ease-out;
}
.site-header[data-open] .menu-toggle-icon span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-header[data-open] .menu-toggle-icon span:nth-child(2) { opacity: 0; }
.site-header[data-open] .menu-toggle-icon span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.scroll-progress {
  width: 100%;
  max-width: var(--page-max);
  margin: 7px auto 0;
  height: 2px;
  border-radius: 2px;
  overflow: hidden;
  background: rgba(var(--rgb-line), .7);
  pointer-events: none;
}
.scroll-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--c-leaf) 0%, var(--c-apricot) 100%);
  transition: transform .1s linear;
}

/* ---------- 7. 站点页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 128px);
  background: var(--c-sand);
  border-top: 1px solid var(--c-line);
  color: var(--c-ink);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--c-apricot) 0%, var(--c-apricot) 42%,
    var(--c-leaf) 42%, var(--c-leaf) 100%
  );
}

.footer-inner {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 76px) var(--gutter) clamp(28px, 4vw, 48px);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.7fr) minmax(0, 1.05fr);
  gap: clamp(28px, 4vw, 56px);
}

.footer-brand { min-width: 0; }
.brand-footer { padding-left: 0; }

.footer-pitch {
  margin-top: 16px;
  max-width: 32ch;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--c-ink-soft);
}
.footer-meta {
  margin-top: 14px;
  font-size: .8125rem;
  color: var(--c-ink-soft);
}
.footer-meta .mono { color: var(--c-ink); font-weight: 700; }

.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.footer-column { min-width: 0; }

.footer-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-family: var(--font-heading);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .16em;
  color: var(--c-leaf-deep);
}
.footer-title::before {
  content: "";
  flex: none;
  width: 14px; height: 2px;
  border-radius: 2px;
  background: var(--c-apricot);
}

.footer-links { display: grid; gap: 11px; }
.footer-links a {
  display: inline-block;
  font-size: .9375rem;
  color: var(--c-ink-soft);
  transition: color .18s ease-out, transform .18s ease-out;
}
.footer-links a:hover { color: var(--c-apricot-deep); transform: translateX(3px); }

.footer-contact {
  display: grid;
  gap: 12px;
  align-content: start;
  min-width: 0;
}
.contact-line { display: grid; gap: 3px; }
.contact-key {
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--c-leaf-deep);
}
.contact-value {
  font-size: .9375rem;
  line-height: 1.65;
  color: var(--c-ink);
  word-break: break-word;
}
.contact-note {
  margin-top: 2px;
  padding: 12px 14px;
  border-left: 2px solid var(--c-sun);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(247, 201, 72, .16);
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--c-ink-soft);
}

.footer-bottom {
  border-top: 1px solid var(--c-line-strong);
  background: rgba(46, 42, 38, .04);
}
.footer-bottom-inner {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: 18px var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
}
.footer-legal,
.footer-note {
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--c-ink-soft);
}
.footer-legal .mono { color: var(--c-ink); }
.footer-note { max-width: 62ch; }

/* ---------- 8. 通用组件 ---------- */
.card {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 28px);
  box-shadow: var(--shadow-1);
  transition: transform .18s ease-out, box-shadow .18s ease-out, border-color .18s ease-out;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
  border-color: var(--c-apricot);
}
.card-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.card-text { font-size: .9375rem; color: var(--c-ink-soft); }

.stat { display: grid; gap: 6px; }
.stat-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--c-leaf-deep);
}
.stat-label::before {
  content: "";
  flex: none;
  width: 10px; height: 2px;
  border-radius: 2px;
  background: var(--c-apricot);
}
.stat-value {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 4vw, 3.1rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--c-ink);
}
.stat-unit {
  font-family: var(--font-body);
  font-size: .875rem;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--c-ink-soft);
}
.stat-desc { font-size: .875rem; line-height: 1.7; color: var(--c-ink-soft); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .04em;
  white-space: nowrap;
}
.badge--leaf { background: var(--c-leaf-soft); color: var(--c-leaf-deep); }
.badge--apricot { background: var(--c-apricot-soft); color: var(--c-apricot-deep); }
.badge--outline { border-color: var(--c-line-strong); color: var(--c-ink-soft); }

.table-wrap {
  width: 100%;
  overflow-x: auto;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
}
.data-table { width: 100%; min-width: 560px; font-size: .9375rem; }
.data-table caption {
  caption-side: top;
  padding: 14px 16px;
  text-align: left;
  font-family: var(--font-heading);
  font-size: .9375rem;
  font-weight: 700;
  color: var(--c-ink);
  border-bottom: 1px solid var(--c-line);
}
.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--c-line);
}
.data-table thead th {
  background: var(--c-sand);
  font-family: var(--font-heading);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--c-leaf-deep);
  white-space: nowrap;
}
.data-table tbody tr:nth-child(even) { background: #FAF6F1; }
.data-table tbody tr:hover { background: var(--c-apricot-soft); }
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--c-ink);
  white-space: nowrap;
}

.fold {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  transition: border-color .18s ease-out, box-shadow .18s ease-out;
}
.fold + .fold { margin-top: 10px; }
.fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-ink);
  cursor: pointer;
  transition: color .18s ease-out, background-color .18s ease-out;
}
.fold summary::after {
  content: "";
  flex: none;
  width: 9px; height: 9px;
  margin-top: -4px;
  border-right: 2px solid var(--c-leaf-deep);
  border-bottom: 2px solid var(--c-leaf-deep);
  transform: rotate(45deg);
  transition: transform .22s ease-out, border-color .18s ease-out;
}
.fold summary:hover { color: var(--c-apricot-deep); background: var(--c-sand); }
.fold[open] { border-color: var(--c-apricot); }
.fold[open] summary { color: var(--c-apricot-deep); background: var(--c-apricot-soft); }
.fold[open] summary::after {
  margin-top: 3px;
  border-color: var(--c-apricot-deep);
  transform: rotate(-135deg);
}
.fold-body {
  padding: 16px 20px 20px;
  border-top: 1px solid var(--c-line);
  font-size: .9375rem;
  color: var(--c-ink-soft);
}
.fold-body > * + * { margin-top: .75em; }

.tabs { display: grid; gap: 0; }
.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border-bottom: 1px solid var(--c-line);
}
.tab {
  margin-bottom: -1px;
  padding: 10px 16px;
  border: 1px solid transparent;
  border-bottom: 2px solid transparent;
  border-radius: var(--radius) var(--radius) 0 0;
  font-family: var(--font-body);
  font-size: .9375rem;
  font-weight: 600;
  color: var(--c-ink-soft);
  cursor: pointer;
  transition: color .18s ease-out, background-color .18s ease-out, border-color .18s ease-out;
}
.tab:hover { color: var(--c-ink); background: var(--c-sand); }
.tab[aria-selected="true"] {
  color: var(--c-apricot-deep);
  background: var(--c-apricot-soft);
  border-color: var(--c-line);
  border-bottom-color: var(--c-apricot);
}
.tabpanel { padding-top: 24px; }
.tabpanel[hidden] { display: none; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .8125rem;
  color: var(--c-ink-soft);
}
.breadcrumb li { display: flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; color: var(--c-line-strong); }
.breadcrumb a { color: var(--c-ink-soft); transition: color .18s ease-out; }
.breadcrumb a:hover { color: var(--c-apricot-deep); }
.breadcrumb [aria-current="page"] { color: var(--c-ink); font-weight: 600; }

.media {
  position: relative;
  overflow: hidden;
  background: var(--c-sand);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
}
.media img { width: 100%; height: 100%; object-fit: cover; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--3x2 { aspect-ratio: 3 / 2; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 4 / 5; }

.media--placeholder {
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  background-color: var(--c-sand);
  background-image: repeating-linear-gradient(
    45deg,
    rgba(var(--rgb-line), .55) 0 10px,
    rgba(251, 247, 240, 0) 10px 20px
  );
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .12em;
  color: var(--c-ink-soft);
  text-align: center;
  padding: 12px;
}

.media-caption {
  margin-top: 10px;
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--c-ink-soft);
}

.figure { display: grid; gap: 0; }

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--c-line-strong);
  border-radius: 999px;
  background: var(--c-white);
  font-family: var(--font-mono);
  font-size: .8125rem;
  color: var(--c-ink);
  cursor: pointer;
  transition: border-color .18s ease-out, background-color .18s ease-out, color .18s ease-out;
}
.copy-btn:hover {
  border-color: var(--c-apricot);
  color: var(--c-apricot-deep);
  background: var(--c-apricot-soft);
}
.copy-btn[data-copied] {
  border-color: var(--c-leaf);
  background: var(--c-leaf-soft);
  color: var(--c-leaf-deep);
}
.copy-btn[data-copied]::after {
  content: "已复制";
  font-family: var(--font-body);
  font-size: .75rem;
}

.to-top {
  position: fixed;
  right: clamp(16px, 3vw, 28px);
  bottom: clamp(16px, 3vw, 28px);
  z-index: 90;
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--c-ink);
  color: var(--c-cream);
  box-shadow: var(--shadow-2);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition:
    opacity .2s ease-out,
    transform .2s ease-out,
    visibility .2s ease-out,
    background-color .18s ease-out;
}
.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.to-top:hover { background: var(--c-apricot-deep); }

/* ---------- 9. 滚动显现 ---------- */
[data-reveal][data-reveal-init] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s ease-out, transform .5s ease-out;
}
[data-reveal][data-revealed] {
  opacity: 1;
  transform: none;
}

/* ---------- 10. 平板与手机 ---------- */
@media (max-width: 1200px) {
  .header-actions .quick-link { display: none; }
}

@media (max-width: 1024px) {
  .site-header { padding: 10px var(--gutter) 0; }
  .site-header[data-scrolled] { padding-top: 8px; }

  .header-inner {
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 20px;
  }

  .brand-tagline { display: none; }
  .menu-toggle { display: inline-flex; }

  .site-nav {
    display: none;
    order: 3;
    flex: 1 0 100%;
    width: 100%;
    justify-content: stretch;
    padding-top: 10px;
    border-top: 1px solid var(--c-line);
  }
  .header-actions {
    display: none;
    order: 4;
    flex: 1 0 100%;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 4px;
  }
  .site-header[data-open] .site-nav { display: flex; }
  .site-header[data-open] .header-actions { display: flex; }

  .nav-list { width: 100%; flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 12px 14px;
    border-radius: var(--radius);
    font-size: 1rem;
  }
  .nav-link::after { display: none; }
  .nav-link[aria-current="page"] {
    background: var(--c-apricot-soft);
    color: var(--c-apricot-deep);
  }

  .header-actions .quick-link {
    display: inline-flex;
    border-color: var(--c-line);
    background: var(--c-white);
  }
  .header-cta { flex: 1 1 auto; }

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

@media (max-width: 960px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .span-3, .span-4 { grid-column: span 3; }
  .span-5, .span-6, .span-7, .span-8, .span-9 { grid-column: span 6; }
}

@media (max-width: 780px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .footer-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-pitch { max-width: none; }
}

@media (max-width: 640px) {
  body { font-size: 1rem; }

  .grid { grid-template-columns: minmax(0, 1fr); }
  [class*="span-"] { grid-column: auto; }

  .footer-columns { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .footer-bottom-inner { flex-direction: column; align-items: flex-start; }

  .data-table { min-width: 480px; }
}

/* ---------- 11. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  [data-reveal][data-reveal-init] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .card:hover { transform: none; }
  .btn:active { transform: none; }
  .brand:hover .brand-mark { transform: none; }
  .footer-links a:hover { transform: none; }
  .to-top { transform: none; }
}