/* ==========================================================================
   365安卓游 — 全站共享样式 /assets/site.css
   编辑部衬线刊物 × 编号核验终端
   ========================================================================== */

:root {
  --color-surface: #ecebeb;
  --color-surface-alt: #e4e2e2;
  --color-surface-deep: #d8d6d6;
  --color-ink: #463f39;
  --color-ink-soft: #6d625a;
  --color-ink-muted: #8a7e75;
  --color-line: #cecccb;
  --color-primary: #a56736;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e2d9d2;
  --color-accent: #2b7bbb;
  --color-accent-ink: #ffffff;
  --color-highlight: #c9d7e2;
  --color-focus: #1b6cac;
  --color-contrast-surface: #191410;
  --color-contrast-ink: #e7e5e4;
  --color-contrast-line: #46423f;
  --color-contrast-accent: #3088cf;
  --overlay-scrim: linear-gradient(180deg, rgba(25, 20, 16, 0.35) 0%, rgba(25, 20, 16, 0.72) 55%, rgba(25, 20, 16, 0.92) 100%);
  --font-heading: "Songti SC", "Source Han Serif SC", "Noto Serif SC", SimSun, serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, Menlo, Consolas, monospace;
  --text-xs: 12.9px;
  --text-sm: 16.1px;
  --text-base: 18px;
  --text-lg: 22.5px;
  --text-xl: 28.1px;
  --text-2xl: 35.2px;
  --text-3xl: 43.9px;
  --text-4xl: 54.9px;
  --text-display: clamp(37px, 7.7vw, 98px);
  --text-figure: clamp(31px, 5.5vw, 71px);
  --weight-heading: 672;
  --weight-body: 400;
  --leading-body: 1.89;
  --leading-heading: 1.22;
  --tracking-heading: 0.006em;
  --radius-sm: 1px;
  --radius-md: 1px;
  --radius-lg: 1px;
  --radius-pill: 1px;
  --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: 1080px;
  --measure: 63ch;
  --gutter: 32px;
  --section-y: 90px;
  --section-y-lg: 126px;
}

/* --------------------------------------------------------------------------
   1. Reset 与纸面基底
   -------------------------------------------------------------------------- */

*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background-color: var(--color-surface);
  background-image:
    repeating-linear-gradient(90deg, color-mix(in srgb, var(--color-ink) 3%, transparent) 0 1px, transparent 1px 108px),
    repeating-linear-gradient(0deg, color-mix(in srgb, var(--color-ink) 2%, transparent) 0 1px, transparent 1px 108px);
  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);
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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);
  text-wrap: balance;
}

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

ul, ol { margin: 0 0 var(--space-3); padding-left: 1.35em; }
li { margin-bottom: 0.35em; }

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

a { color: inherit; }

button, input, select, textarea { font: inherit; color: inherit; }

hr { border: 0; margin: 0; }

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

:where(a, button, [tabindex], summary):focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.colophon :where(a, button):focus-visible {
  outline-color: var(--color-contrast-accent);
}

/* --------------------------------------------------------------------------
   2. 容器与栅格
   -------------------------------------------------------------------------- */

.wrap {
  width: min(100% - calc(var(--gutter) * 2), var(--container));
  margin-inline: auto;
}

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

.asym {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: calc(var(--gutter) * 1.5);
  align-items: start;
}

.section {
  padding-block: var(--section-y);
}

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

.section--deep {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.section--deep h1,
.section--deep h2,
.section--deep h3,
.section--deep h4 { color: var(--color-contrast-ink); }

.section--deep a { color: var(--color-contrast-accent); }

/* --------------------------------------------------------------------------
   3. 文字零件
   -------------------------------------------------------------------------- */

.measure { max-width: var(--measure); }

.lede {
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.section--deep .lede { color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent); }

.display {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-4);
  text-wrap: balance;
}

.figure-num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
}

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

/* --------------------------------------------------------------------------
   4. 印刷标签 · 分隔 · 面包屑
   -------------------------------------------------------------------------- */

.label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px 3px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.16em;
  line-height: 1.3;
  color: var(--color-primary-ink);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.label::before {
  content: "";
  width: 6px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}

.label--ink {
  color: var(--color-ink-soft);
  background: var(--color-surface-deep);
}

.label--accent {
  color: var(--color-accent-ink);
  background: var(--color-accent);
}

.section--deep .label {
  color: var(--color-contrast-ink);
  background: var(--color-contrast-accent);
}

.rule {
  height: 3px;
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
  background: none;
  margin-block: var(--space-4);
}

.section--deep .rule {
  border-top-color: var(--color-contrast-line);
  border-bottom-color: var(--color-contrast-line);
}

.scale {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.scale::before,
.scale::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-line);
}

.scale::after { box-shadow: 0 3px 0 var(--color-line); }

.section--deep .scale { color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent); }
.section--deep .scale::before,
.section--deep .scale::after { background: var(--color-contrast-line); }
.section--deep .scale::after { box-shadow: 0 3px 0 var(--color-contrast-line); }

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  padding-block: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.crumbs a {
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: color 140ms linear, border-color 140ms linear;
}

.crumbs a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.crumbs__sep { color: var(--color-line); }

/* --------------------------------------------------------------------------
   5. 区段编码 · 旁注 · 标签徽标
   -------------------------------------------------------------------------- */

.seg-code {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.seg-code .seg {
  position: relative;
  padding: 5px 10px 4px;
  background: var(--color-surface-deep);
  color: var(--color-ink);
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  transition: background 150ms linear, border-color 150ms linear, color 150ms linear;
}

.seg-code .seg + .seg { margin-left: 14px; }

.seg-code .seg + .seg::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 50%;
  width: 1px;
  height: 12px;
  transform: translateY(-50%);
  background: var(--color-line);
}

.seg-code .seg:hover,
.seg-code .seg:focus-visible {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-ink);
}

.seg-code .seg[data-active] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.section--deep .seg-code .seg {
  background: color-mix(in srgb, var(--color-contrast-ink) 12%, transparent);
  color: var(--color-contrast-ink);
}

.section--deep .seg-code .seg + .seg::before { background: var(--color-contrast-line); }

.note {
  margin: 0 0 var(--space-3);
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-muted);
}

.note p { margin: 0 0 var(--space-1); }

.note__key {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.section--deep .note {
  border-left-color: var(--color-contrast-line);
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

.section--deep .note__key { color: var(--color-contrast-accent); }

.tag__row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 9px 3px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: background 140ms linear, border-color 140ms linear, color 140ms linear;
}

.tag:hover {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-ink);
}

.tag[aria-pressed="true"],
.tag--on {
  background: var(--color-highlight);
  border-color: var(--color-accent);
  color: var(--color-ink);
}

/* --------------------------------------------------------------------------
   6. 按钮
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px 10px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.03em;
  text-decoration: none;
  color: var(--color-ink);
  background: transparent;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 150ms linear, color 150ms linear, border-color 150ms linear;
}

.btn:hover {
  background: var(--color-surface-alt);
  border-color: var(--color-ink-soft);
}

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

.btn--primary:hover {
  background: color-mix(in srgb, var(--color-primary) 78%, var(--color-contrast-surface));
  border-color: color-mix(in srgb, var(--color-primary) 78%, var(--color-contrast-surface));
  color: var(--color-primary-ink);
}

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

.btn--ghost:hover {
  background: var(--color-highlight);
  color: var(--color-ink);
  border-color: var(--color-accent);
}

.section--deep .btn {
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-line);
}

.section--deep .btn:hover {
  background: color-mix(in srgb, var(--color-contrast-ink) 14%, transparent);
  border-color: var(--color-contrast-accent);
}

.section--deep .btn--primary {
  color: var(--color-primary-ink);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   7. 图片容器基础规则（页面阶段放置占位）
   -------------------------------------------------------------------------- */

.figure {
  margin: 0 0 var(--space-3);
}

.figure__frame {
  position: relative;
  overflow: hidden;
  background: var(--color-surface-deep);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
}

.figure__frame--wide { aspect-ratio: 16 / 9; }
.figure__frame--tall { aspect-ratio: 3 / 4; }
.figure__frame--square { aspect-ratio: 1 / 1; }
.figure__frame--band { aspect-ratio: 21 / 9; }

.figure__frame > img,
.figure__frame > svg,
.figure__frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}

.figure__label {
  position: absolute;
  left: var(--space-2);
  bottom: var(--space-2);
  z-index: 2;
  max-width: calc(100% - var(--space-4));
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-contrast-ink);
}

.figure__cap {
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--color-ink-muted);
}

/* --------------------------------------------------------------------------
   8. 技能树式服务路径
   -------------------------------------------------------------------------- */

.path {
  list-style: none;
  margin: 0 0 var(--space-3);
  padding: 0;
}

.path__item {
  position: relative;
  padding: var(--space-2) 0 var(--space-2) var(--space-4);
  border-left: var(--border-thin) solid var(--color-line);
}

.path__item::before {
  content: attr(data-step);
  position: absolute;
  left: -12px;
  top: var(--space-2);
  display: grid;
  place-items: center;
  width: 23px;
  height: 23px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: -0.02em;
  color: var(--color-primary-ink);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.path__item h3,
.path__item h4 {
  margin: 0 0 4px;
  font-size: var(--text-lg);
}

.path__item p {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.section--deep .path__item { border-left-color: var(--color-contrast-line); }
.section--deep .path__item p { color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent); }

/* --------------------------------------------------------------------------
   9. Header：命令栏 + 双线 + 口径条
   -------------------------------------------------------------------------- */

.progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--color-accent);
  z-index: 90;
  pointer-events: none;
}

.masthead {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--color-surface);
}

.masthead__bar {
  position: relative;
  background: var(--color-surface);
}

.masthead__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-height: 62px;
  padding-block: var(--space-2);
}

.masthead__rule {
  height: 3px;
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -80px;
  z-index: 100;
  padding: 10px 16px 9px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-contrast-ink);
  background: var(--color-contrast-surface);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top 140ms linear;
}

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

.brand {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  flex: 0 0 auto;
  text-decoration: none;
}

.brand__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: 0.02em;
}

.brand__tag {
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  align-items: center;
  gap: var(--space-1);
  padding: 9px 12px 8px;
  background: transparent;
  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: 0.1em;
  color: var(--color-ink-soft);
  cursor: pointer;
  transition: background 140ms linear, color 140ms linear, border-color 140ms linear;
}

.nav-toggle:hover {
  background: var(--color-surface-alt);
  color: var(--color-ink);
  border-color: var(--color-ink-soft);
}

.nav-toggle__bars {
  display: inline-block;
  width: 14px;
  height: 9px;
  border-top: var(--border-thin) solid currentColor;
  border-bottom: var(--border-thin) solid currentColor;
}

.cmd-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-left: auto;
}

.cmd-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.cmd-nav__list li { margin: 0; }

.cmd-nav__link {
  display: inline-block;
  padding: 6px 1px 5px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: color 140ms linear, border-color 140ms linear;
}

.cmd-nav__link:hover {
  color: var(--color-ink);
  border-bottom-color: var(--color-line);
}

.cmd-nav__link[aria-current="page"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.cmd-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  padding: 10px 14px 9px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-primary-ink);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background 140ms linear;
}

.cmd-cta::after {
  content: "\2192";
  font-size: 0.95em;
  line-height: 1;
}

.cmd-cta:hover {
  background: color-mix(in srgb, var(--color-primary) 78%, var(--color-contrast-surface));
}

.ticker {
  background: var(--color-surface-deep);
}

.ticker__text {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  padding-block: 8px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  line-height: 1.5;
  color: var(--color-ink-soft);
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
}

.ticker__text::-webkit-scrollbar { display: none; }

.ticker__key {
  flex: 0 0 auto;
  padding: 2px 6px 1px;
  color: var(--color-primary-ink);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  letter-spacing: 0.14em;
}

/* --------------------------------------------------------------------------
   10. Footer：反色刊记
   -------------------------------------------------------------------------- */

.colophon {
  margin-top: var(--space-8);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.colophon__grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 4fr) minmax(0, 3fr);
  gap: var(--gutter);
  padding-block: var(--space-8) var(--space-6);
}

.colophon__name {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--color-contrast-ink);
}

.colophon__desc {
  max-width: 36ch;
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.75;
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

.colophon__head {
  margin: 0 0 var(--space-3);
  padding-bottom: 7px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.2em;
  line-height: 1.4;
  color: var(--color-contrast-accent);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.colophon__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--text-sm);
  line-height: 1.7;
}

.colophon__list li { margin: 0; }

.colophon__list a {
  color: var(--color-contrast-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  transition: color 140ms linear, border-color 140ms linear;
}

.colophon__list a:hover {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

.colophon__key {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: color-mix(in srgb, var(--color-contrast-ink) 52%, transparent);
}

.colophon__base {
  position: relative;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.colophon__base::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 3px;
  height: var(--border-thin);
  background: var(--color-contrast-line);
}

.colophon__base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
  padding-block: var(--space-3);
}

.colophon__note {
  max-width: 76ch;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.75;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.colophon__legal {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  line-height: 1.75;
  color: color-mix(in srgb, var(--color-contrast-ink) 52%, transparent);
}

/* --------------------------------------------------------------------------
   11. 响应式
   -------------------------------------------------------------------------- */

@media (max-width: 1080px) {
  .asym { gap: var(--gutter); }
}

@media (max-width: 900px) {
  :root { --section-y: 72px; --section-y-lg: 96px; }

  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: var(--space-3); }

  .asym {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
  }

  .brand__tag { display: none; }

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

  .cmd-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
    margin-left: 0;
    padding: var(--space-3) var(--space-4) var(--space-4);
    background: var(--color-surface-alt);
    border-top: var(--border-thin) solid var(--color-line);
    border-bottom: var(--border-thin) solid var(--color-line);
  }

  .cmd-nav[data-open] { display: flex; }

  .cmd-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .cmd-nav__link {
    display: block;
    padding: 13px 0 12px;
    font-size: var(--text-base);
    border-bottom: var(--border-thin) solid var(--color-line);
  }

  .cmd-nav__link[aria-current="page"] {
    border-bottom-color: var(--color-accent);
  }

  .cmd-cta {
    justify-content: center;
    padding: 13px 16px 12px;
    font-size: var(--text-sm);
  }

  .colophon__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    padding-block: var(--space-6) var(--space-4);
  }

  .colophon__brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .wrap { width: min(100% - calc(var(--space-3) * 2), var(--container)); }

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

  .masthead__inner { min-height: 56px; }

  .ticker__text { font-size: var(--text-xs); }

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

  .colophon__base-inner { flex-direction: column; }

  .seg-code { flex-wrap: wrap; row-gap: 6px; }
}

/* --------------------------------------------------------------------------
   12. 动效降级
   -------------------------------------------------------------------------- */

@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;
    scroll-behavior: auto !important;
  }

  .skip-link { transition: none; }
}