:root {
  --color-surface: #fbfbfb;
  --color-surface-alt: #f1f1f1;
  --color-surface-deep: #e4e3e3;
  --color-ink: #393232;
  --color-ink-soft: #695e5f;
  --color-ink-muted: #86797a;
  --color-line: #d8d7d7;
  --color-primary: #ea1021;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #f9dadc;
  --color-accent: #168370;
  --color-accent-ink: #ffffff;
  --color-highlight: #d2e5e2;
  --color-focus: #0c7d69;
  --color-contrast-surface: #1b0c0d;
  --color-contrast-ink: #e7e4e4;
  --color-contrast-line: #483c3c;
  --color-contrast-accent: #24dbba;
  --overlay-scrim: linear-gradient(180deg, rgba(27, 12, 13, 0.35) 0%, rgba(27, 12, 13, 0.72) 55%, rgba(27, 12, 13, 0.92) 100%);
  --font-heading: "Source Han Sans SC", "Noto Sans SC", SimHei, "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
  --text-xs: 11.0px;
  --text-sm: 14.7px;
  --text-base: 17px;
  --text-lg: 22.7px;
  --text-xl: 30.2px;
  --text-2xl: 40.3px;
  --text-3xl: 53.7px;
  --text-4xl: 71.5px;
  --text-display: clamp(51px, 10.5vw, 135px);
  --text-figure: clamp(43px, 7.6vw, 97px);
  --weight-heading: 803;
  --weight-body: 400;
  --leading-body: 1.79;
  --leading-heading: 1.29;
  --tracking-heading: -0.014em;
  --radius-sm: 1px;
  --radius-md: 1px;
  --radius-lg: 1px;
  --radius-pill: 1px;
  --border-thin: 1px;
  --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: 1120px;
  --measure: 70ch;
  --gutter: 24px;
  --section-y: 79px;
  --section-y-lg: 111px;
}

/* ============================================================
   RESET / 中文排版基准
   ============================================================ */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

p { margin: 0 0 var(--space-3); }
p:last-child { margin-bottom: 0; }

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

a { color: inherit; }

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

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

strong, b { font-weight: 700; }

code, kbd, samp { font-family: var(--font-mono); }

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

/* ============================================================
   通用容器 / 分节 / 反转底
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section { padding: var(--section-y) 0; position: relative; }
.section--lg { padding: var(--section-y-lg) 0; }
.section--flush-top { padding-top: 0; }
.section--flush-bottom { padding-bottom: 0; }

.section--primary {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}
.section--accent {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}
.section--dark {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.section--soft {
  background: var(--color-surface-alt);
  color: var(--color-ink);
}
.section--deep {
  background: var(--color-surface-deep);
  color: var(--color-ink);
}

/* ============================================================
   分节签名：粗线 + 反色小块标签 / 双线分隔
   ============================================================ */
.section-signature {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0 0 var(--space-4);
  padding-top: var(--space-2);
  border-top: var(--border-thick) solid currentColor;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.sig-tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.section--dark .section-signature { color: var(--color-contrast-ink); }
.section--dark .sig-tag {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}
.section--primary .section-signature { color: var(--color-primary-ink); }
.section--primary .sig-tag {
  background: var(--color-primary-ink);
  color: var(--color-primary);
}
.section--accent .section-signature { color: var(--color-accent-ink); }
.section--accent .sig-tag {
  background: var(--color-accent-ink);
  color: var(--color-accent);
}

.rule-double {
  height: 8px;
  margin: var(--space-6) 0;
  border-top: var(--border-thick) solid currentColor;
  border-bottom: var(--border-thin) solid currentColor;
}

.rule-thick {
  height: 0;
  margin: var(--space-6) 0;
  border-top: var(--border-thick) solid currentColor;
}

/* ============================================================
   文字与数字工具
   ============================================================ */
.prose {
  max-width: var(--measure);
  font-size: var(--text-base);
  color: var(--color-ink);
}
.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 > :first-child { margin-top: 0; }

.lead {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-ink-soft);
  max-width: var(--measure);
}
.section--dark .lead { color: var(--color-contrast-ink); }
.section--primary .lead,
.section--accent .lead { color: inherit; }

.num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.figure-xl {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-figure);
  line-height: 1;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
}

.display-hero {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 1.02;
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-3);
}

.muted { color: var(--color-ink-muted); }
.section--dark .muted { color: var(--color-contrast-ink); }

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 11px 22px;
  border: var(--border-thick) solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease;
}

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

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

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

.section--dark .btn--ghost { color: var(--color-contrast-ink); }
.section--dark .btn--ghost:hover {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
  border-color: var(--color-contrast-accent);
}

/* ============================================================
   面包屑
   ============================================================ */
.breadcrumb {
  padding: var(--space-3) 0;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
}
.breadcrumb li + li::before {
  content: "/";
  margin-right: var(--space-1);
  color: var(--color-line);
}
.breadcrumb a {
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color 180ms ease;
}
.breadcrumb a:hover { color: var(--color-primary); }

/* ============================================================
   网格
   ============================================================ */
.grid {
  display: grid;
  gap: var(--gutter);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.grid--tight { gap: var(--space-2); }
.grid--airy { gap: var(--space-6); }

.split-8-4 { display: grid; gap: var(--gutter); grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); }
.split-7-5 { display: grid; gap: var(--gutter); grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }

/* ============================================================
   图片容器
   ============================================================ */
.media-frame {
  position: relative;
  overflow: hidden;
  background: var(--color-surface-deep);
  border-radius: var(--radius-sm);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.5) contrast(1.06);
}
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--narrow { aspect-ratio: 4 / 5; }
.media-frame--figure { aspect-ratio: 1 / 1; }
.media-frame--banner { aspect-ratio: 21 / 9; }

.media-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  padding: var(--space-3);
  background: var(--overlay-scrim);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.media-caption {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}
.section--dark .media-caption { color: var(--color-contrast-ink); }

.round-watermark {
  position: absolute;
  right: 0;
  bottom: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-4xl);
  line-height: 0.84;
  letter-spacing: -0.04em;
  color: var(--color-primary);
  opacity: 0.09;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.section--dark .round-watermark {
  color: var(--color-contrast-accent);
  opacity: 0.14;
}

/* ============================================================
   进入动画
   ============================================================ */
.js .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 420ms ease, transform 420ms ease;
}
.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   SKIP LINK / 滚动进度
   ============================================================ */
.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -80px;
  z-index: 400;
  padding: 10px 18px;
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: top 160ms ease;
}
.skip-link:focus { top: var(--space-2); }

.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: 400;
  pointer-events: none;
}

body.nav-open { overflow: hidden; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--color-surface);
  border-bottom: var(--border-thick) solid var(--color-primary);
}

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  min-height: calc(var(--space-8) + var(--space-2));
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* —— 品牌 —— */
.brand {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}
.brand-name {
  display: inline-block;
  padding: 7px 14px;
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.15;
  letter-spacing: var(--tracking-heading);
  border-radius: var(--radius-sm);
  transition: background-color 180ms ease, color 180ms ease;
}
.brand:hover .brand-name {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}
.brand-domain {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  white-space: nowrap;
}

/* —— 轮次索引抽屉 —— */
.drawer {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}
.drawer-trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 8px 16px;
  background: var(--color-surface-alt);
  color: var(--color-ink);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: background-color 180ms ease, color 180ms ease;
}
.drawer-trigger:hover {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}
.drawer-label {
  font-family: var(--font-heading);
  font-weight: 700;
}
.drawer-meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  transition: color 180ms ease;
}
.drawer-trigger:hover .drawer-meta { color: var(--color-accent-ink); }

.drawer-panel {
  position: absolute;
  top: 100%;
  left: 50%;
  width: min(620px, 82vw);
  padding: var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thick) solid var(--color-contrast-accent);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -8px);
  transition: opacity 180ms ease, transform 180ms ease, visibility 0s linear 180ms;
  z-index: 220;
}
.drawer:hover .drawer-panel,
.drawer:focus-within .drawer-panel,
.drawer[data-open] .drawer-panel {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
  transition-delay: 0s;
}

.drawer-heading {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-contrast-accent);
}
.drawer-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--border-thin);
  background: var(--color-contrast-line);
}
.drawer-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 12px 14px;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: background-color 180ms ease, color 180ms ease;
}
.drawer-link:hover {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}
.drawer-code {
  min-width: 4.2em;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-contrast-accent);
  transition: color 180ms ease;
}
.drawer-link:hover .drawer-code { color: var(--color-contrast-surface); }

/* —— 导航 —— */
.site-nav {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.nav-panel-title { display: none; }
.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.nav-link {
  display: inline-block;
  padding: 7px 11px;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  color: var(--color-ink);
  white-space: nowrap;
  transition: background-color 180ms ease, color 180ms ease;
}
.nav-link:hover {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}
.nav-link[aria-current="page"] {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.header-cta {
  padding: 9px 18px;
  font-size: var(--text-sm);
}

/* —— 移动导航按钮 —— */
.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  margin-left: auto;
  padding: 9px 14px;
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  position: relative;
  z-index: 300;
  transition: background-color 180ms ease, color 180ms ease;
}
.nav-toggle[aria-expanded="true"] {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}
.nav-toggle-bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
}
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }
.nav-toggle-text {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* ============================================================
   FOOTER —— 阶梯式
   ============================================================ */
.site-footer { margin-top: var(--section-y-lg); }

.footer-step--index {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thick) solid var(--color-contrast-accent);
}
.footer-step--legal {
  background: var(--color-accent);
  color: var(--color-accent-ink);
  border-top: var(--border-thick) solid var(--color-contrast-surface);
}

.footer-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--section-y) var(--gutter) calc(var(--section-y) - var(--space-3));
  display: grid;
  gap: var(--space-6);
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.6fr) minmax(0, 0.8fr);
}

.footer-brand-name {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: 1.05;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-accent);
}
.footer-brand-line {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
}
.footer-brand-meta {
  margin: 0;
  max-width: 36ch;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-contrast-ink);
}

.footer-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

.footer-list {
  display: grid;
  gap: var(--space-1);
}
.footer-list--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.footer-link {
  display: inline-block;
  padding: 2px 0;
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}
.footer-link:hover {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

.footer-inner--legal {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: minmax(0, 1fr);
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.footer-contact {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-accent-ink);
}
.footer-note {
  margin: 0;
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-accent-ink);
}
.footer-copy {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-accent-ink);
}

/* ============================================================
   深底 / 满块内部的通用反转
   ============================================================ */
.section--dark :focus-visible,
.footer-step--index :focus-visible,
.drawer-panel :focus-visible,
.site-nav[data-open] :focus-visible {
  outline-color: var(--color-contrast-accent);
}
.section--primary :focus-visible,
.section--accent :focus-visible,
.footer-step--legal :focus-visible {
  outline-color: var(--color-primary-ink);
}

/* ============================================================
   平板
   ============================================================ */
@media (max-width: 1100px) {
  .drawer { display: none; }

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

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(420px, 88vw);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: var(--space-2);
    padding: calc(var(--space-8) + var(--space-4)) var(--space-4) var(--space-4);
    background: var(--color-contrast-surface);
    color: var(--color-contrast-ink);
    border-left: var(--border-thick) solid var(--color-contrast-accent);
    overflow-y: auto;
    transform: translateX(102%);
    transition: transform 220ms ease;
    z-index: 250;
  }
  .site-nav[data-open] { transform: none; }

  .nav-panel-title {
    display: block;
    margin: 0 0 var(--space-2);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.14em;
    color: var(--color-contrast-accent);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--border-thin);
    background: var(--color-contrast-line);
  }
  .nav-link {
    padding: 14px 16px;
    background: var(--color-contrast-surface);
    color: var(--color-contrast-ink);
    font-size: var(--text-base);
  }
  .nav-link:hover {
    background: var(--color-contrast-accent);
    color: var(--color-contrast-surface);
  }
  .nav-link[aria-current="page"] {
    background: var(--color-primary);
    color: var(--color-primary-ink);
  }

  .header-cta {
    margin-top: var(--space-3);
    justify-content: center;
  }

  .split-8-4,
  .split-7-5 { grid-template-columns: minmax(0, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }
  .footer-brand { grid-column: 1 / -1; }
}

/* ============================================================
   手机
   ============================================================ */
@media (max-width: 720px) {
  .header-inner { gap: var(--space-2); }
  .brand-domain { display: none; }
  .brand-name { font-size: var(--text-base); padding: 6px 11px; }

  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
    padding-top: var(--space-6);
    padding-bottom: var(--space-6);
  }
  .footer-list--two { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }

  .drawer-list { grid-template-columns: minmax(0, 1fr); }

  .rule-double { margin: var(--space-4) 0; }
}

@media (max-width: 460px) {
  .footer-list--two { grid-template-columns: minmax(0, 1fr); }
}

/* ============================================================
   动效偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }

  .site-nav,
  .drawer-panel,
  .skip-link {
    transition: none;
  }

  .drawer-panel { transform: translate(-50%, 0); }
}