/*
 * dnt-index — 唯一主题 / dntof.com
 * 根页：Anthropic 暖米色编辑首页（body.home）。子页：:root 浅色文档 token。
 * 无主题切换，无左轨编号 / 假时钟 HUD。
 * platform / dnt-118 / redeem 共用 :root light token。
 */

:root {
  --bg: #EDEEE9;
  --ink: #14161C;
  --muted: #5C6570;
  --line: rgba(20, 22, 28, .14);
  --line-soft: rgba(20, 22, 28, .08);
  --panel: #F7F7F4;
  --signal: #0F766E;
  --signal-soft: rgba(15, 118, 110, .08);
  --danger: #B42318;
  --ok: var(--signal);
  --accent: var(--signal);
  --accent-soft: var(--signal-soft);
  --band: color-mix(in srgb, var(--ink) 7%, var(--bg));

  --font-sans: 'IBM Plex Sans', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Consolas, 'Courier New', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== 首页：Anthropic 暖米色编辑系统（不污染子页 :root） ===== */
body.home {
  --color-bg-base: #ECE9E0;
  --color-bg-raised: #F5F3EC;
  --color-bg-overlay: #FDFCF8;
  --color-bg-inverted: #141413;
  --color-text-primary: #141413;
  --color-text-secondary: #6B6860;
  --color-text-muted: #B0AEA5;
  --color-text-inverted: #FAF9F5;
  --color-text-link: #C96442;
  --color-border-default: #D8D5CC;
  --color-border-subtle: #E8E6DC;
  --color-accent-orange: #D97757;
  --color-accent-warm: #C96442;
  --color-success: #6B8F47;
  --color-error: #C0453A;
  --font-display: 'Poppins', 'DM Sans', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-heading: 'Poppins', 'DM Sans', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Lora', 'Noto Serif SC', 'Songti SC', 'Georgia', serif;
  --font-heading-cn: var(--font-heading);
  --font-body-cn: var(--font-body);
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --font-sans: var(--font-heading);
  --radius-control: 8px;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-md: 1.125rem;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-32: 128px;
  --max-width-layout: 1200px;
  --radius-sm: 4px;
  --radius-full: 9999px;
  --ease-default: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-slow: 400ms;
  --shadow-btn: none;
  --leading-cn-tight: 1.4;
  --leading-cn-normal: 1.75;
  --signal: var(--color-accent-orange);

  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: var(--leading-cn-normal);
  background-image:
    radial-gradient(ellipse 80% 60% at 18% 0%, rgba(217, 119, 87, 0.07) 0%, transparent 55%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
}
body.home ::selection {
  background: var(--color-accent-orange);
  color: var(--color-text-inverted);
}
body.home .dnt-skip {
  background: var(--color-accent-orange);
  color: var(--color-text-inverted);
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; }

:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }
body.home :focus-visible {
  outline: 2px solid var(--color-accent-orange);
  outline-offset: 3px;
}
::selection { background: var(--signal); color: var(--panel); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.dnt-skip {
  position: absolute; left: 12px; top: -48px; z-index: 100;
  background: var(--ink); color: var(--bg);
  font-size: 0.85rem;
  padding: 8px 14px;
  transition: top 0.15s ease;
}
.dnt-skip:focus { top: 12px; }

.dnt-wrap {
  max-width: 1080px; margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

body.home .page-container {
  width: 100%;
  max-width: var(--max-width-layout);
  margin: 0 auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

body.home .reveal {
  opacity: 0;
  animation: fadeUp var(--duration-slow) var(--ease-default) forwards;
}
body.home .reveal:nth-child(1) { animation-delay: 0ms; }
body.home .reveal:nth-child(2) { animation-delay: 80ms; }
body.home .reveal:nth-child(3) { animation-delay: 160ms; }
body.home .reveal:nth-child(4) { animation-delay: 240ms; }

body.home .masthead {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: var(--space-5) clamp(var(--space-6), 5vw, var(--space-16));
}
body.home .masthead__nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 400;
}
body.home .masthead__nav > a:not(.btn) {
  font-size: 15px;
  font-weight: 400;
  color: #141413;
}
body.home .masthead__nav > a:not(.btn):hover { opacity: 0.7; }
body.home .masthead__cta.btn {
  margin-left: var(--space-2);
  height: 36px;
  padding: 8px 16px;
  font-size: 16px;
  font-weight: 400;
  border-radius: 8px;
  background: #141413;
  color: #FAF9F5;
}

body.home .hero {
  padding-block: clamp(72px, 11vw, 140px) clamp(48px, 8vw, 96px);
  overflow: hidden;
}
body.home .hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(240px, 0.75fr);
  gap: var(--space-16);
  align-items: start;
}
body.home .hero__inner { min-width: 0; }
body.home .hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4.6vw, 58px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: normal;
  color: var(--color-text-primary);
  max-width: 11em;
  text-wrap: balance;
}
body.home .hero__title .mark {
  font-style: normal;
  text-decoration: underline;
  text-decoration-thickness: 0.11em;
  text-underline-offset: 0.12em;
  text-decoration-color: var(--color-text-primary);
}
body.home .hero__copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding-top: var(--space-3);
}
body.home .hero__body {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1.7vw, 1.25rem);
  line-height: var(--leading-cn-normal);
  color: var(--color-text-primary);
  max-width: 28em;
  text-spacing-trim: trim-start allow-end;
}
body.home .hero__mark {
  width: min(100%, 340px);
  color: var(--color-text-primary);
  opacity: 0.72;
}
body.home .ink { width: 100%; height: auto; }
body.home .ink text { font-family: var(--font-heading); }

body.home .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  height: 36px;
  min-height: 36px;
  padding: 8px 16px;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: normal;
  border-radius: 8px;
  box-shadow: none;
  transition: opacity var(--duration-fast) var(--ease-default);
}
body.home .btn:hover { opacity: 0.88; }
body.home .btn-primary {
  background: #141413;
  color: #FAF9F5;
}
body.home .btn-secondary {
  background: transparent;
  color: var(--color-text-primary);
  box-shadow: inset 0 0 0 1px var(--color-border-default);
}
body.home .cta-dark .btn-primary {
  background: var(--color-text-inverted);
  color: var(--color-bg-inverted);
}
body.home .cta-dark .btn-ghost {
  background: transparent;
  color: var(--color-text-inverted);
  box-shadow: inset 0 0 0 1px rgba(250, 249, 245, 0.32);
}

body.home .cta-dark {
  padding-block: var(--space-24);
  background:
    radial-gradient(ellipse 80% 60% at 50% 100%, rgba(217, 119, 87, 0.12) 0%, transparent 60%),
    var(--color-bg-inverted);
  color: var(--color-text-inverted);
}
body.home .cta-dark__split {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: var(--space-16);
  align-items: end;
}
body.home .cta-dark__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: var(--leading-cn-tight);
  margin-bottom: var(--space-3);
}
body.home .cta-dark__meta {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  color: var(--color-accent-orange);
  margin-bottom: var(--space-6);
}
body.home .cta-dark__body {
  font-family: var(--font-body);
  max-width: 38em;
  font-size: var(--text-md);
  line-height: var(--leading-cn-normal);
  color: rgba(250, 249, 245, 0.68);
  margin-bottom: var(--space-8);
}
body.home .cta-dark__actions { display: flex; gap: var(--space-3); flex-wrap: wrap; }
body.home .cta-dark__aside {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: var(--leading-cn-normal);
  color: rgba(250, 249, 245, 0.58);
  max-width: 28em;
  padding-bottom: var(--space-2);
}
body.home .cta-dark__aside a {
  color: var(--color-text-inverted);
  border-bottom: 1px solid rgba(217, 119, 87, 0.55);
}
body.home .cta-dark__aside a:hover { color: var(--color-accent-orange); }

body.home .works,
body.home .org {
  padding-block: var(--space-24);
}
body.home .section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  max-width: 12ch;
  margin-bottom: var(--space-12);
}
body.home .works__list a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas: "name st" "desc desc";
  gap: var(--space-2) var(--space-6);
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-border-subtle);
}
body.home .works__list li:last-child a { border-bottom: 1px solid var(--color-border-subtle); }
body.home .works__list a:hover .works__name { color: var(--color-accent-warm); }
body.home .works__name {
  grid-area: name;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 400;
}
body.home .works__status {
  grid-area: st;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}
body.home .works__status.is-on { color: var(--color-accent-warm); }
body.home .works__status.is-off { color: var(--color-error); }
body.home .works__desc {
  grid-area: desc;
  font-family: var(--font-body);
  color: var(--color-text-secondary);
  max-width: 48em;
}

body.home .org p {
  max-width: 42em;
  font-family: var(--font-body);
  color: var(--color-text-secondary);
}
body.home .org__links {
  margin-top: var(--space-6);
  display: flex;
  gap: var(--space-6);
}
body.home .org__links a {
  color: var(--color-text-link);
  border-bottom: 1px solid color-mix(in srgb, var(--color-accent-orange) 45%, transparent);
}

body.home .colophon {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding: var(--space-8) clamp(var(--space-6), 5vw, var(--space-16));
  background: var(--color-bg-inverted);
  color: rgba(250, 249, 245, 0.5);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
}
body.home .colophon nav { display: flex; gap: var(--space-5); flex-wrap: wrap; }
body.home .colophon a:hover { color: var(--color-text-inverted); }

@media (min-width: 1100px) {
  body.home .hero__title { font-size: 58px; }
}
@media (max-width: 900px) {
  body.home .hero__grid,
  body.home .cta-dark__split { grid-template-columns: 1fr; }
  body.home .hero__mark { width: min(100%, 300px); }
}
@media (max-width: 560px) {
  body.home .masthead { justify-content: flex-start; }
  body.home .colophon { flex-direction: column; }
}

/* ======================================================
   子页共享（platform / dnt-118 / redeem）
   ====================================================== */
.dnt-topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  padding: 0 clamp(20px, 3vw, 40px);
  min-height: 3.25rem;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
}
.dnt-topbar__id { display: flex; align-items: baseline; gap: 16px; min-width: 0; }
.dnt-topbar__brand {
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
.dnt-topbar__meta,
.dnt-topbar__clock {
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
}
.dnt-topbar__meta { overflow: hidden; text-overflow: ellipsis; }
.dnt-topbar__clock { font-variant-numeric: tabular-nums; }
.dnt-topbar__right { display: flex; align-items: center; gap: clamp(14px, 2.5vw, 28px); min-width: 0; }
.dnt-topbar__links { display: flex; gap: clamp(14px, 2.5vw, 28px); flex-wrap: wrap; }
.dnt-topbar__links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}
.dnt-topbar__links a:hover { color: var(--ink); border-bottom-color: var(--signal); }

kbd {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 1px 6px;
}

.hero__kicker {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 20px;
}

.sec { padding-top: clamp(56px, 9vh, 96px); scroll-margin-top: 4.5rem; }
.sec__idx {
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 10px;
}
.sec__idx b { color: var(--signal); font-weight: 500; }
.sec__head {
  display: flex; align-items: baseline; gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}
.sec__head h2 {
  font-weight: 600;
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.sec__head .zh { font-size: 0.85rem; font-weight: 400; color: var(--muted); }
.sec__lead {
  flex: 1;
  min-width: 24px;
  border-bottom: 1px dotted var(--line);
  transform: translateY(-6px);
}
.sec__tag {
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
}
.sec__tag b { color: var(--signal); font-weight: 500; }
.sec__lede { margin-top: 20px; color: var(--muted); line-height: 1.9; max-width: 62ch; }
.sec__lede strong { color: var(--ink); font-weight: 500; }
.sec__lede a { color: var(--signal); border-bottom: 1px solid var(--signal); }
.sec__lede a:hover { color: var(--ink); border-bottom-color: var(--ink); }

.chip {
  font-size: 0.66rem;
  font-weight: 500;
  padding: 3px 8px;
  border: 1px solid var(--line);
  color: var(--muted);
  white-space: nowrap;
}
.chip--ok { color: var(--signal); border-color: color-mix(in srgb, var(--signal) 35%, transparent); background: var(--signal-soft); }
.chip--off { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 35%, transparent); background: rgba(180, 35, 24, .06); }
.chip--wait { color: var(--ink); border-color: var(--line); background: var(--panel); }

.dnt-figure {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 12px;
}
.dnt-figure img { width: 100%; height: auto; }
.dnt-figure figcaption {
  margin-top: 10px;
  font-size: 0.66rem;
  color: var(--muted);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}

.dnt-count__grid {
  display: flex; align-items: flex-start; gap: 10px; flex-wrap: wrap;
}
.dnt-count__cell {
  min-width: 84px;
  padding: 14px 12px 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 6px; align-items: center;
}
.dnt-count__num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  line-height: 1.1;
}
.dnt-count__unit {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}
.dnt-count__sep {
  font-family: var(--font-mono);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  color: var(--muted);
  padding-top: 14px;
}

.dnt-foot {
  margin-top: clamp(56px, 9vh, 96px);
  border-top: 1px solid var(--line);
  padding: 24px 0 40px;
  font-size: 0.85rem;
  color: var(--muted);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.dnt-foot a { color: var(--muted); border-bottom: 1px solid transparent; }
.dnt-foot a:hover { color: var(--ink); border-bottom-color: var(--signal); }
.dnt-foot__links { display: flex; gap: 18px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  min-height: 40px;
  padding: 8px 18px;
  border: 1px solid var(--ink);
  background: transparent;
  font-size: 0.85rem;
  font-weight: 500;
}
.btn:hover { border-color: var(--signal); background: var(--signal-soft); }

@media (max-width: 560px) {
  .dnt-topbar__meta, .dnt-topbar__clock { display: none; }
  .dnt-foot { flex-direction: column; }
  .sec__head { flex-wrap: wrap; }
  .sec__lead { display: none; }
}

.doc { padding: clamp(24px, 4vh, 40px) clamp(20px, 4vw, 64px) 0; max-width: 1180px; margin: 0 auto; width: 100%; }
.doc-back {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: clamp(28px, 5vh, 56px);
}
.doc-back:hover { color: var(--ink); }
.doc-grid {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}
.doc-side { position: sticky; top: 32px; }
.doc-side .no {
  font-weight: 700;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1;
  letter-spacing: -0.03em;
}
.doc-side .db {
  margin-top: 6px;
  font-size: 0.72rem;
  color: var(--muted);
}
.doc-side .status {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.doc-side .side-links { margin-top: 24px; display: flex; flex-direction: column; gap: 10px; }
.side-link {
  display: inline-flex; align-items: baseline; gap: 8px;
  font-size: 0.85rem;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  align-self: flex-start;
  padding-bottom: 2px;
}
.side-link:hover { color: var(--signal); border-bottom-color: var(--signal); }
.side-link::after { content: '↗'; font-size: 0.72rem; color: var(--signal); }

.doc-fileline {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 14px;
}
.doc-title {
  font-weight: 700;
  font-size: clamp(1.8rem, 4.2vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  overflow-wrap: anywhere;
}
.doc-zh {
  margin-top: 10px;
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
  font-size: 1.05rem;
}
.doc-zh .tag { font-size: 0.78rem; color: var(--muted); }
.doc-rule { height: 1px; background: var(--ink); margin: 26px 0; }

.doc-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 32px;
  margin-bottom: 34px;
}
.doc-meta .k {
  font-size: 0.72rem;
  color: var(--muted);
}
.doc-meta .v { margin-top: 4px; font-size: 0.95rem; }
.doc-meta .v .dot { margin-right: 8px; }

.dir-status {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.82rem;
  color: var(--ink);
}
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--muted);
  flex-shrink: 0;
}
.dot--ok { background: var(--signal); }
.dot--off { background: var(--danger); }
.dot--wait { background: var(--ink); }

.doc-actions {
  margin-top: 36px;
  display: flex; gap: 14px; flex-wrap: wrap; align-items: stretch;
}

.kbar {
  flex: 1; min-width: 240px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  min-height: 52px;
  padding: 0 22px;
  background: var(--ink);
  color: var(--panel);
  font-size: 0.85rem;
  font-weight: 500;
}
.kbar .zh { font-size: 0.78rem; opacity: 0.7; }
.kbar:hover { background: var(--signal); }
.kbar--ghost {
  flex: 0 0 auto;
  background: transparent; color: var(--ink);
  border: 1px solid var(--line);
}
.kbar--ghost .zh { opacity: 1; color: var(--muted); }
.kbar--ghost:hover { background: var(--panel); border-color: var(--ink); color: var(--ink); }

@media (max-width: 1000px) {
  .doc-grid { grid-template-columns: 1fr; gap: 28px; }
  .doc-side { position: static; display: flex; align-items: baseline; gap: 24px; flex-wrap: wrap; }
  .doc-side .status { margin-top: 0; padding-top: 0; border-top: none; }
  .doc-side .side-links { display: none; }
  .doc-side .db { display: none; }
}
@media (max-width: 640px) {
  .doc-meta { grid-template-columns: 1fr; }
}