:root {
  --color-surface: #0c0d0d;
  --color-surface-alt: #1d1e1e;
  --color-surface-deep: #313433;
  --color-ink: #c5cec9;
  --color-ink-soft: #83968c;
  --color-ink-muted: #76897f;
  --color-line: #2d302f;
  --color-primary: #16e97a;
  --color-primary-ink: #111814;
  --color-primary-soft: #0d2c1c;
  --color-accent: #2fd07b;
  --color-accent-ink: #111814;
  --color-highlight: #123021;
  --color-focus: #22dd7b;
  --color-contrast-surface: #f1f3f2;
  --color-contrast-ink: #303633;
  --color-contrast-line: #c7c9c8;
  --color-contrast-accent: #1c7d4a;
  --overlay-scrim: linear-gradient(180deg, rgba(241, 243, 242, 0.35) 0%, rgba(241, 243, 242, 0.72) 55%, rgba(241, 243, 242, 0.92) 100%);
  --font-heading: ui-monospace, SFMono-Regular, Menlo, Consolas, "PingFang SC", monospace;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, 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(36px, 7.5vw, 96px);
  --text-figure: clamp(30px, 5.4vw, 69px);
  --weight-heading: 696;
  --weight-body: 400;
  --leading-body: 1.7;
  --leading-heading: 1.19;
  --tracking-heading: 0.007em;
  --radius-sm: 2px;
  --radius-md: 2px;
  --radius-lg: 2px;
  --radius-pill: 2px;
  --border-thin: 1px;
  --border-thick: 1px;
  --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: 1280px;
  --measure: 66ch;
  --gutter: 16px;
  --section-y: 68px;
  --section-y-lg: 95px;
}

/* ===== reset ===== */
*, *::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);
  -webkit-font-smoothing: antialiased;
}
img, picture, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6, p, figure, blockquote { margin: 0; }
table { border-collapse: collapse; width: 100%; }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; border-radius: var(--radius-sm); }
::selection { background-color: var(--color-primary); color: var(--color-primary-ink); }

/* ===== 中文排版与标题层 ===== */
h1, h2, h3, h4, .section-head__title {
  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 { max-width: var(--measure); }

.display {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.02;
  letter-spacing: -0.005em;
  color: var(--color-ink);
}
.figure {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}
.lede {
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--color-ink-soft);
}
.label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}
.label::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
}

/* ===== 布局 ===== */
.shell {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-2);
}
@media (min-width: 720px) { .shell { padding-inline: var(--space-4); } }

.section { padding-block: var(--section-y); }
@media (min-width: 900px) { .section { padding-block: var(--section-y-lg); } }
.section--tight { padding-block: var(--space-6); }
.section--contrast { background-color: var(--color-contrast-surface); color: var(--color-contrast-ink); }
.section--contrast h1, .section--contrast h2, .section--contrast h3 { color: var(--color-contrast-ink); }
.section--contrast a { color: var(--color-contrast-accent); }
.section--contrast .label { color: var(--color-contrast-ink); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) dotted var(--color-line);
  margin-bottom: var(--space-4);
}
.section-head__title { font-size: var(--text-2xl); }
.section-head__note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.layout { display: grid; gap: var(--space-4); }
@media (min-width: 1000px) {
  .layout { grid-template-columns: minmax(220px, 268px) minmax(0, 1fr); gap: var(--space-6); }
}

.grid { display: grid; gap: var(--space-3); grid-template-columns: repeat(12, minmax(0, 1fr)); }
.grid > * { grid-column: span 12; }
@media (min-width: 900px) {
  .grid > .span-3 { grid-column: span 3; }
  .grid > .span-4 { grid-column: span 4; }
  .grid > .span-6 { grid-column: span 6; }
  .grid > .span-8 { grid-column: span 8; }
  .grid > .span-9 { grid-column: span 9; }
  .grid > .span-12 { grid-column: span 12; }
}

.divider { border: 0; border-top: var(--border-thin) dotted var(--color-line); margin: 0; }
.divider--offset { margin-inline-start: var(--space-8); }

/* ===== 跳转链接 ===== */
.skip-link {
  position: fixed;
  top: var(--space-1);
  left: var(--space-1);
  z-index: 120;
  padding: 10px var(--space-2);
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
}
.skip-link:focus, .skip-link:focus-visible { transform: translateY(0); }

/* ===== 头部 ===== */
.masthead {
  position: relative;
  background-color: var(--color-surface);
  border-bottom: var(--border-thin) dotted var(--color-line);
}
.masthead__progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 110;
  background-color: color-mix(in srgb, var(--color-line) 80%, transparent);
}
.masthead__progress-fill {
  display: block;
  width: 0;
  height: 100%;
  background-color: var(--color-primary);
}

.masthead__bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 66px;
  padding-block: var(--space-1);
}

.brand { display: inline-flex; align-items: center; gap: var(--space-2); }
.brand__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-primary-ink);
  background-color: var(--color-primary);
  border-radius: var(--radius-sm);
}
.brand__meta { display: block; }
.brand__name {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  color: var(--color-ink);
}
.brand__tag {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}
.brand:hover .brand__name { color: var(--color-primary); }

.masthead__stat {
  display: none;
  align-items: baseline;
  gap: var(--space-1);
  margin-left: auto;
  padding-right: var(--space-3);
  border-right: var(--border-thin) dotted var(--color-line);
}
@media (min-width: 900px) { .masthead__stat { display: flex; } }
.masthead__stat-num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}
.masthead__stat-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  margin-left: auto;
  padding: 10px var(--space-2);
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink);
}
.nav-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); }
.nav-toggle__glyph { position: relative; width: 14px; height: 10px; }
.nav-toggle__glyph::before,
.nav-toggle__glyph::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background-color: currentColor;
}
.nav-toggle__glyph::before { top: 0; }
.nav-toggle__glyph::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background-color: var(--color-primary-soft);
}

.commandbar {
  background-color: var(--color-surface-alt);
  border-top: var(--border-thin) dotted var(--color-line);
  border-bottom: var(--border-thin) dotted var(--color-line);
}
.commandbar__inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  min-height: 52px;
}
.commandbar__list { display: flex; align-items: center; flex-wrap: wrap; }
.commandbar__item { border-left: var(--border-thin) dotted var(--color-line); }
.commandbar__item:last-child { border-right: var(--border-thin) dotted var(--color-line); }
.commandbar__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 14px var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
  transition: background-color 0.16s ease, color 0.16s ease;
}
.commandbar__link:hover {
  background-color: var(--color-highlight);
  color: var(--color-primary);
}
.commandbar__idx {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  font-variant-numeric: tabular-nums;
}
.commandbar__link[aria-current="page"] {
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
  background-image: linear-gradient(var(--color-primary), var(--color-primary));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 100% 2px;
}
.commandbar__link[aria-current="page"] .commandbar__idx { color: var(--color-primary); }
.commandbar__cta { margin-left: auto; white-space: nowrap; }

.seasonbar {
  background-color: var(--color-surface);
  border-bottom: var(--border-thin) dotted var(--color-line);
}
.seasonbar__inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding-block: 10px;
}
.seasonbar__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  white-space: nowrap;
}
.seasonbar__track {
  display: flex;
  align-items: center;
  max-width: 100%;
  overflow-x: auto;
  border-left: var(--border-thin) dotted var(--color-line);
}
.seasonbar__item {
  flex: 0 0 auto;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  color: var(--color-ink-soft);
  border-right: var(--border-thin) dotted var(--color-line);
  transition: background-color 0.16s ease, color 0.16s ease;
}
.seasonbar__item:hover {
  background-color: var(--color-highlight);
  color: var(--color-primary);
}
.seasonbar__item[aria-pressed="true"],
.seasonbar__item.is-active {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.seasonbar__utility {
  margin-left: auto;
  max-width: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}
@media (max-width: 899px) {
  .nav-toggle { display: inline-flex; }
  .commandbar { display: none; }
  .commandbar[data-open] { display: block; }
  .commandbar__inner {
    flex-direction: column;
    align-items: stretch;
    padding-block: var(--space-2);
    gap: var(--space-2);
  }
  .commandbar__list { flex-direction: column; align-items: stretch; width: 100%; }
  .commandbar__item { border-left: 0; border-bottom: var(--border-thin) dotted var(--color-line); }
  .commandbar__item:last-child { border-right: 0; border-bottom: 0; }
  .commandbar__link { width: 100%; padding: 14px var(--space-1); }
  .commandbar__cta { margin-left: 0; justify-content: center; width: 100%; }
  .seasonbar__utility { margin-left: 0; width: 100%; }
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 10px var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink);
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  transition: background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}
.btn:hover {
  background-color: var(--color-highlight);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn--primary {
  color: var(--color-primary-ink);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  font-weight: 700;
}
.btn--primary:hover {
  background-color: color-mix(in srgb, var(--color-primary) 84%, var(--color-surface));
  color: var(--color-primary-ink);
  border-color: transparent;
}
.btn--ghost { background-color: transparent; color: var(--color-ink-soft); }
.btn--ghost:hover { background-color: var(--color-highlight); }
.btn--sm { padding: 6px var(--space-2); font-size: var(--text-xs); }
.btn--block { width: 100%; }

/* ===== 面包屑 ===== */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.breadcrumb li + li::before { content: "/"; margin-right: 6px; color: var(--color-line); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb [aria-current="page"] { color: var(--color-ink-soft); }

/* ===== 面板 / 标签 / 数据 ===== */
.panel {
  padding: var(--space-3);
  background-color: var(--color-surface-alt);
  border: var(--border-thin) dotted var(--color-line);
  border-radius: var(--radius-md);
}
.panel--deep { background-color: var(--color-surface-deep); }
.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) dotted var(--color-line);
  margin-bottom: var(--space-2);
}
.panel__title { font-size: var(--text-lg); }
.panel__body { color: var(--color-ink-soft); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent-ink);
  background-color: var(--color-accent);
  border-radius: var(--radius-sm);
}
.tag--primary { background-color: var(--color-primary); color: var(--color-primary-ink); }
.tag--line {
  background-color: transparent;
  border: var(--border-thin) dotted var(--color-line);
  color: var(--color-ink-soft);
}

.stat {
  padding: var(--space-3);
  background-color: var(--color-surface-deep);
  border-left: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
}
.stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}
.stat__label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}
.stat--accent { border-left-color: var(--color-accent); }
.stat--accent .stat__value { color: var(--color-accent); }

.data { width: 100%; font-size: var(--text-sm); }
.data caption {
  padding-bottom: var(--space-2);
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}
.data th, .data td {
  padding: 10px var(--space-2);
  text-align: left;
  border-bottom: var(--border-thin) dotted var(--color-line);
}
.data thead th {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  background-color: var(--color-surface-deep);
}
.data tbody tr:hover { background-color: var(--color-highlight); }
.data .is-num {
  text-align: right;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.data .is-key { color: var(--color-primary); font-weight: 700; }

/* ===== 索引轨 ===== */
.rail {
  padding-left: var(--space-2);
  border-left: var(--border-thin) dotted var(--color-line);
}
@media (min-width: 1000px) {
  .rail { position: sticky; top: var(--space-6); align-self: start; }
}
.rail__title {
  padding-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}
.rail__list { display: block; }
.rail__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 9px var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) dotted var(--color-line);
  transition: background-color 0.16s ease, color 0.16s ease;
}
.rail__link:hover { color: var(--color-primary); background-color: var(--color-highlight); }
.rail__link[aria-current="true"] {
  color: var(--color-primary);
  background-color: var(--color-primary-soft);
}

/* ===== 图片容器 ===== */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: var(--color-surface-alt);
  border: var(--border-thin) dotted var(--color-line);
  border-radius: var(--radius-md);
}
.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.5) contrast(1.06);
}
.media__tint {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-color: color-mix(in srgb, var(--color-primary) 18%, transparent);
  mix-blend-mode: soft-light;
}
.media__scrim { position: absolute; inset: 0; pointer-events: none; background: var(--overlay-scrim); }
.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
}
.media--tall { aspect-ratio: 3 / 4; }
.media--wide { aspect-ratio: 21 / 9; }

/* ===== 正文块 ===== */
.prose { max-width: var(--measure); color: var(--color-ink); }
.prose p + p { margin-top: var(--space-2); }
.prose h2, .prose h3 { margin-top: var(--space-4); margin-bottom: var(--space-2); }
.prose a { color: var(--color-primary); text-decoration: underline dotted; text-underline-offset: 3px; }
.prose ul, .prose ol { margin-top: var(--space-2); }
.prose li { position: relative; padding-left: var(--space-3); }
.prose li + li { margin-top: 6px; }
.prose li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-primary);
}
.prose strong { color: var(--color-primary); font-weight: 700; }

/* ===== 工具类 ===== */
.u-caps {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.u-mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.u-num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-weight: var(--weight-heading); }
.u-soft { color: var(--color-ink-soft); }
.u-muted { color: var(--color-ink-muted); }
.u-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ===== 显现 ===== */
.js-reveal [data-reveal] { opacity: 0; transform: translateY(6px); }
.js-reveal [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

/* ===== 页脚 ===== */
.sitefoot {
  margin-top: var(--section-y);
  background-color: var(--color-surface-alt);
  border-top: var(--border-thin) dotted var(--color-line);
}
.sitefoot__inner {
  display: grid;
  gap: var(--space-6);
  padding-block: var(--space-8) var(--space-6);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 900px) {
  .sitefoot__inner { grid-template-columns: minmax(280px, 1.05fr) minmax(0, 2fr); gap: var(--space-8); }
}
.sitefoot__brand { display: grid; gap: var(--space-2); align-content: start; }
.sitefoot__mark {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  letter-spacing: 0.06em;
  color: var(--color-ink);
}
.sitefoot__tag {
  max-width: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.sitefoot__contact, .sitefoot__note {
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}
.sitefoot__note { color: var(--color-ink-muted); }
.sitefoot__cols {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (min-width: 900px) {
  .sitefoot__cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding-left: var(--space-4);
    border-left: var(--border-thin) dotted var(--color-line);
  }
}
.sitefoot__title {
  padding-bottom: var(--space-1);
  margin-bottom: var(--space-2);
  border-bottom: var(--border-thin) dotted var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.sitefoot__list li + li { margin-top: 8px; }
.sitefoot__link {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  transition: color 0.16s ease;
}
.sitefoot__link:hover { color: var(--color-primary); text-decoration: underline dotted; text-underline-offset: 3px; }
.sitefoot__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
  padding-block: var(--space-3);
  border-top: var(--border-thin) dotted var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}
.sitefoot__base p { max-width: none; }
.sitefoot__copy { color: var(--color-ink-soft); }

/* ===== 动效与焦点降级 ===== */
@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 [data-reveal] { opacity: 1; transform: none; }
}