:root {
  --color-surface: #232226;
  --color-surface-alt: #313035;
  --color-surface-deep: #434147;
  --color-ink: #c1becb;
  --color-ink-soft: #918ca1;
  --color-ink-muted: #79748b;
  --color-line: #3f3e44;
  --color-primary: #7c5be1;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #2f2a40;
  --color-accent: #c8e718;
  --color-accent-ink: #131118;
  --color-highlight: #414523;
  --color-focus: #d1f40b;
  --color-contrast-surface: #eeedf0;
  --color-contrast-ink: #323036;
  --color-contrast-line: #c5c3c7;
  --color-contrast-accent: #606f0b;
  --overlay-scrim: linear-gradient(180deg, rgba(238, 237, 240, 0.35) 0%, rgba(238, 237, 240, 0.72) 55%, rgba(238, 237, 240, 0.92) 100%);
  --font-heading: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, 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(44px, 9.1vw, 116px);
  --text-figure: clamp(37px, 6.6vw, 84px);
  --weight-heading: 655;
  --weight-body: 400;
  --leading-body: 1.75;
  --leading-heading: 1.22;
  --tracking-heading: -0.011em;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 17px;
  --radius-pill: 999px;
  --border-thin: 1px;
  --border-thick: 1px;
  --shadow-1: 0 0 0 1px rgba(200, 231, 24, 0.35);
  --shadow-2: 0 0 28px rgba(200, 231, 24, 0.35);
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1160px;
  --measure: 70ch;
  --gutter: 32px;
  --section-y: 74px;
  --section-y-lg: 104px;
}

/* =========================================================
   01 · 基础重置与画布
   ========================================================= */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  min-height: 100vh;
  padding-bottom: 92px;
  background-color: var(--color-surface);
  background-image:
    radial-gradient(1180px 600px at 8% -14%, color-mix(in srgb, var(--color-primary) 28%, transparent) 0%, transparent 62%),
    radial-gradient(860px 520px at 100% 0%, color-mix(in srgb, var(--color-accent) 8%, transparent) 0%, transparent 60%),
    linear-gradient(180deg, color-mix(in srgb, var(--color-surface) 94%, #000) 0%, var(--color-surface) 45%, color-mix(in srgb, var(--color-surface) 90%, #000) 100%);
  background-attachment: fixed;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
  overflow-x: hidden;
}

@media (max-width: 780px) {
  body { background-attachment: scroll; padding-bottom: 84px; }
}

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

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);
  color: color-mix(in srgb, var(--color-ink) 42%, #ffffff);
  text-shadow: 0 0 20px color-mix(in srgb, var(--color-primary) 40%, transparent);
}

h1 { font-size: var(--text-2xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-base); }

p {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
}

a {
  color: color-mix(in srgb, var(--color-primary) 46%, #ffffff);
  text-decoration-color: color-mix(in srgb, var(--color-primary) 55%, transparent);
  text-underline-offset: 3px;
}

a:hover { color: var(--color-accent); }

ul, ol {
  margin: 0 0 var(--space-3);
  padding-left: 1.15em;
}

li { margin-bottom: 6px; }

strong, b {
  font-weight: 700;
  color: color-mix(in srgb, var(--color-ink) 62%, #ffffff);
}

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

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (max-width: 700px) {
  h1 { font-size: var(--text-xl); }
  h2 { font-size: var(--text-lg); }
}

/* =========================================================
   02 · 布局骨架
   ========================================================= */
.shell {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  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); }

.stack > * + * { margin-top: var(--space-3); }

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

.grid-12 > * { grid-column: span 12; min-width: 0; }

@media (min-width: 761px) {
  .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; }
}

/* =========================================================
   03 · 排版工具
   ========================================================= */
.measure { max-width: var(--measure); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-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);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--color-accent);
  box-shadow: 0 0 10px color-mix(in srgb, var(--color-accent) 80%, transparent);
}

.lead-line {
  position: relative;
  padding-left: calc(var(--space-3) + 6px);
}

.lead-line::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.34em;
  bottom: 0.34em;
  width: 3px;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-primary) 100%);
  box-shadow: 0 0 14px color-mix(in srgb, var(--color-accent) 45%, transparent);
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
  color: var(--color-accent);
}

.num--figure {
  display: block;
  font-size: var(--text-figure);
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent);
  text-shadow: 0 0 30px color-mix(in srgb, var(--color-accent) 42%, transparent);
}

.prose { max-width: var(--measure); }
.prose > * + * { margin-top: var(--space-3); }
.prose h2 { margin-top: var(--space-6); }
.prose h3 { margin-top: var(--space-4); }
.prose li { margin-bottom: 6px; }

/* =========================================================
   04 · 面板 / 反相块 / 标签 / 折叠
   ========================================================= */
.panel {
  position: relative;
  padding: var(--space-4);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 42%, transparent);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-alt);
  background-image: linear-gradient(158deg,
    color-mix(in srgb, var(--color-surface-alt) 82%, #ffffff) 0%,
    var(--color-surface-alt) 46%,
    color-mix(in srgb, var(--color-surface-alt) 78%, #000000) 100%);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.34);
  transition: border-color 240ms ease, box-shadow 240ms ease;
}

.panel:hover {
  border-color: color-mix(in srgb, var(--color-primary) 72%, transparent);
  box-shadow: var(--shadow-1);
}

.panel--deep {
  background-color: var(--color-surface-deep);
  background-image: linear-gradient(160deg,
    color-mix(in srgb, var(--color-surface-deep) 84%, #ffffff) 0%,
    var(--color-surface-deep) 100%);
}

.inverse {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.inverse h2,
.inverse h3,
.inverse h4 {
  color: var(--color-contrast-ink);
  text-shadow: none;
}

.inverse p,
.inverse li { color: var(--color-contrast-ink); }

.inverse a { color: var(--color-contrast-accent); text-decoration-color: var(--color-contrast-line); }
.inverse a:hover { color: color-mix(in srgb, var(--color-contrast-accent) 70%, #000000); }
.inverse hr { background: var(--color-contrast-line); }
.inverse .ticks {
  background-image: repeating-linear-gradient(90deg, var(--color-contrast-line) 0 1px, transparent 1px 12px);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 48%, transparent);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-primary-soft) 82%, transparent);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-ink) 70%, #ffffff);
}

.row-current {
  background: var(--color-highlight);
  border-radius: var(--radius-sm);
}

.ticks {
  height: 10px;
  width: 100%;
  background-image: repeating-linear-gradient(90deg, var(--color-line) 0 1px, transparent 1px 12px);
}

.ticks--accent {
  background-image: repeating-linear-gradient(90deg,
    color-mix(in srgb, var(--color-accent) 75%, transparent) 0 2px,
    transparent 2px 14px);
}

details {
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

details:last-of-type { border-bottom: var(--border-thin) solid var(--color-line); }

summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-base);
  color: color-mix(in srgb, var(--color-ink) 68%, #ffffff);
}

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

summary::before {
  content: "＋";
  margin-right: 10px;
  font-family: var(--font-mono);
  color: var(--color-accent);
}

details[open] > summary::before { content: "－"; }

/* =========================================================
   05 · 按钮 / 面包屑
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 58%, transparent);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-primary) 18%, transparent);
  color: color-mix(in srgb, var(--color-ink) 55%, #ffffff);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: border-color 220ms ease, box-shadow 220ms ease, background-color 220ms ease, color 220ms ease;
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--color-accent);
  color: color-mix(in srgb, var(--color-ink) 30%, #ffffff);
  box-shadow: var(--shadow-2);
}

.btn--accent {
  border-color: transparent;
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.btn--accent:hover,
.btn--accent:focus-visible {
  background: color-mix(in srgb, var(--color-accent) 84%, #ffffff);
  color: var(--color-accent-ink);
  box-shadow: var(--shadow-2);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-line);
  color: var(--color-ink-soft);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: color-mix(in srgb, var(--color-primary) 70%, transparent);
  color: color-mix(in srgb, var(--color-ink) 45%, #ffffff);
  box-shadow: none;
}

.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-block: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.crumb a {
  color: var(--color-ink-soft);
  text-decoration: none;
}

.crumb a:hover { color: var(--color-accent); }

.crumb__sep {
  color: var(--color-line);
  font-family: var(--font-mono);
}

.crumb [aria-current="page"] { color: var(--color-ink); }

/* =========================================================
   06 · 图片容器基础规则（页面阶段放置图片用）
   ========================================================= */
.media-frame {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 40%, transparent);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-deep);
  background-image:
    linear-gradient(132deg, color-mix(in srgb, var(--color-primary) 26%, transparent) 0%, transparent 58%),
    repeating-linear-gradient(118deg,
      color-mix(in srgb, var(--color-surface-deep) 78%, transparent) 0 16px,
      transparent 16px 30px);
}

.media-frame > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.media-frame__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--overlay-scrim);
}

.media-frame__body {
  position: relative;
  z-index: 2;
  padding: var(--space-4);
  color: var(--color-contrast-ink);
}

.media-frame__body h2,
.media-frame__body h3,
.media-frame__body p {
  color: var(--color-contrast-ink);
  text-shadow: none;
}

.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--3x2 { aspect-ratio: 3 / 2; }
.media-frame--tall { min-height: 360px; }
.media-frame--band {
  min-height: 220px;
  display: flex;
  align-items: flex-end;
}

/* =========================================================
   07 · 滚动显现
   ========================================================= */
[data-reveal] {
  transition: opacity 320ms ease, transform 320ms ease;
  transition-delay: var(--reveal-delay, 0ms);
}

html.js [data-reveal]:not(.is-visible) {
  opacity: 0;
  transform: translateY(12px);
}

/* =========================================================
   08 · 跳过链接与刊头
   ========================================================= */
.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -80px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
  transition: top 200ms ease;
}

.skip-link:focus {
  top: var(--space-2);
  color: var(--color-accent-ink);
}

.site-header {
  position: relative;
  z-index: 40;
  padding-block: var(--space-4) var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  background-image: linear-gradient(180deg,
    color-mix(in srgb, var(--color-primary-soft) 62%, transparent) 0%,
    transparent 100%);
}

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-3);
  padding-bottom: var(--space-3);
}

.masthead__ticks {
  justify-self: start;
  width: 96px;
  height: 10px;
  background-image: repeating-linear-gradient(90deg, var(--color-line) 0 1px, transparent 1px 10px);
}

.brand {
  justify-self: center;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-decoration: none;
  text-align: center;
}

.brand:hover .brand-name { color: var(--color-accent); }

.brand-mark {
  width: 11px;
  height: 11px;
  margin-bottom: 4px;
  border-radius: 3px;
  background: var(--color-accent);
  transform: rotate(45deg);
  box-shadow: 0 0 16px color-mix(in srgb, var(--color-accent) 70%, transparent);
}

.brand-name {
  font-family: var(--font-heading);
  font-size: clamp(24px, 3.2vw, var(--text-xl));
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1.1;
  color: color-mix(in srgb, var(--color-ink) 34%, #ffffff);
  text-shadow: 0 0 24px color-mix(in srgb, var(--color-primary) 65%, transparent);
  transition: color 220ms ease;
}

.brand-domain {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  color: var(--color-ink-muted);
}

.refresh-dial {
  justify-self: end;
  display: grid;
  gap: 6px;
  padding: 10px 16px;
  border: var(--border-thin) solid color-mix(in srgb, var(--color-accent) 30%, transparent);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-surface-alt) 72%, transparent);
  text-align: right;
}

.refresh-dial__value {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

.refresh-dial__ticks {
  display: block;
  width: 100%;
  height: 8px;
  background-image: repeating-linear-gradient(90deg,
    color-mix(in srgb, var(--color-accent) 60%, transparent) 0 2px,
    transparent 2px 9px);
}

.refresh-dial__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.06em;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  margin-top: var(--space-3);
  padding: 13px 16px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-surface-alt) 88%, transparent);
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
}

.nav-toggle__bars {
  width: 22px;
  height: 12px;
  background-image:
    linear-gradient(var(--color-accent) 0 0),
    linear-gradient(var(--color-ink-soft) 0 0),
    linear-gradient(var(--color-ink-soft) 0 0);
  background-repeat: no-repeat;
  background-size: 100% 2px, 100% 2px, 100% 2px;
  background-position: 0 0, 0 5px, 0 10px;
}

.site-nav {
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list__item { margin: 0; }

.nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 16px;
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-pill);
  color: var(--color-ink-soft);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color 200ms ease, border-color 200ms ease, background-color 200ms ease;
}

.nav-link__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0;
  color: var(--color-ink-muted);
  transition: color 200ms ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: color-mix(in srgb, var(--color-ink) 68%, #ffffff);
  border-color: color-mix(in srgb, var(--color-primary) 48%, transparent);
}

.nav-link[aria-current="page"],
.nav-link.is-current {
  color: var(--color-accent);
  border-color: color-mix(in srgb, var(--color-accent) 52%, transparent);
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
}

.nav-link[aria-current="page"] .nav-link__no,
.nav-link.is-current .nav-link__no {
  color: color-mix(in srgb, var(--color-accent) 70%, transparent);
}

/* =========================================================
   09 · 底部快捷坞
   ========================================================= */
.dock {
  position: fixed;
  left: 50%;
  bottom: var(--space-3);
  z-index: 90;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  max-width: calc(100% - var(--space-3) * 2);
  padding: 8px 14px;
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 46%, transparent);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-surface-alt) 90%, transparent);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.46);
  transform: translate(-50%, 10px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 280ms ease, transform 280ms ease, visibility 280ms ease;
}

.dock[data-visible="true"] {
  transform: translate(-50%, 0);
  opacity: 1;
  visibility: visible;
}

.dock__caption {
  padding-left: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  color: var(--color-ink-muted);
}

.dock__list {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.dock__list li { margin: 0; }

.dock__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color 200ms ease, color 200ms ease;
}

.dock__link:hover,
.dock__link:focus-visible {
  background: color-mix(in srgb, var(--color-accent) 15%, transparent);
  color: var(--color-accent);
}

.dock__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.dock__link:hover .dock__no,
.dock__link:focus-visible .dock__no { color: var(--color-accent); }

/* =========================================================
   10 · 页脚
   ========================================================= */
.site-footer {
  margin-top: var(--section-y-lg);
  padding-block: var(--space-8) var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
  background-image: linear-gradient(180deg,
    color-mix(in srgb, var(--color-surface-alt) 62%, transparent) 0%,
    transparent 72%);
}

.footer-masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  padding-bottom: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: color-mix(in srgb, var(--color-ink) 40%, #ffffff);
  text-shadow: 0 0 22px color-mix(in srgb, var(--color-primary) 55%, transparent);
}

.footer-scale {
  flex: 1 1 140px;
  min-width: 120px;
  height: 10px;
  background-image: repeating-linear-gradient(90deg, var(--color-line) 0 1px, transparent 1px 11px);
}

.footer-masthead__note {
  flex: 1 1 260px;
  margin: 0;
  max-width: 52ch;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr 0.95fr 1.25fr;
  gap: var(--space-6) var(--space-4);
  margin-top: var(--space-6);
}

.footer-zone { min-width: 0; }

.footer-zone__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 var(--space-2);
  padding-bottom: 10px;
  border-bottom: var(--border-thin) solid var(--color-line);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: color-mix(in srgb, var(--color-ink) 66%, #ffffff);
  text-shadow: none;
}

.footer-zone__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0;
  color: var(--color-accent);
}

.footer-list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-list li { margin: 0; }

.footer-list a,
.footer-list--plain li {
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  line-height: 1.55;
  text-decoration: none;
  transition: color 200ms ease;
}

.footer-list a:hover { color: var(--color-accent); }

.footer-list__no {
  display: inline-block;
  min-width: 2.6em;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

/* =========================================================
   11 · 响应式
   ========================================================= */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .masthead {
    grid-template-columns: 1fr auto;
    row-gap: var(--space-3);
  }

  .masthead__ticks { display: none; }

  .brand {
    grid-column: 1;
    justify-self: start;
    align-items: flex-start;
    text-align: left;
  }

  .refresh-dial { grid-column: 2; }

  .nav-toggle { display: flex; }

  .site-nav {
    display: none;
    margin-top: var(--space-2);
    padding-top: 0;
    border-top: 0;
  }

  .site-nav[data-open] { display: block; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 13px 16px;
    border-color: color-mix(in srgb, var(--color-line) 100%, transparent);
    border-radius: var(--radius-sm);
    background: color-mix(in srgb, var(--color-surface-alt) 62%, transparent);
  }
}

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .footer-masthead { align-items: flex-start; }
}

@media (max-width: 620px) {
  .dock {
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: none;
    gap: 6px;
    padding: 8px 10px;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    transform: translateY(10px);
  }

  .dock[data-visible="true"] { transform: translateY(0); }

  .dock__caption { display: none; }

  .dock__list {
    width: 100%;
    justify-content: space-between;
  }

  .dock__link {
    flex-direction: column;
    gap: 2px;
    padding: 7px 10px;
    font-size: var(--text-xs);
    font-weight: 600;
  }

  .footer-base { justify-content: flex-start; }
}

/* =========================================================
   12 · 降低动效偏好
   ========================================================= */
@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;
  }

  html.js [data-reveal]:not(.is-visible) {
    opacity: 1;
    transform: none;
  }

  .dock {
    transform: translate(-50%, 0);
    transition: none;
  }

  .dock[data-visible="true"] { transform: translate(-50%, 0); }

  @media (max-width: 620px) {
    .dock { transform: translateY(0); }
    .dock[data-visible="true"] { transform: translateY(0); }
  }

  .panel:hover { box-shadow: none; }
  .btn:hover,
  .btn:focus-visible { box-shadow: none; }
}