/* ==========================================================
   site.css — 摆脱娱乐 共享外壳
   01 变量 / 02 reset / 03 中文排版 / 04 通用组件
   05 头部框架 / 06 页脚 / 07 响应式 / 08 动效降级
   ========================================================== */

/* ---------- 01 变量 ---------- */
:root {
  --ink-deep: #101B3B;
  --ink: #1B2A55;
  --crimson: #D93A2B;
  --turquoise: #17A398;
  --gold: #E3B23C;
  --barley: #F2D06B;
  --clay: #B4593B;
  --paper: #F5EEE2;
  --mist: #AEB6CC;
  --rock: #8C93A6;

  --line: 1px solid rgba(140, 147, 166, .34);
  --line-gold: 1px solid rgba(227, 178, 60, .42);

  --bar-h: 72px;
  --rail-w: 112px;
  --page-max: 1320px;
  --gutter: clamp(18px, 4vw, 56px);
  --gap: clamp(16px, 2.2vw, 28px);

  --t-12: 12px;
  --t-13: 13px;
  --t-16: 16px;
  --t-18: 18px;
  --t-20: 20px;
  --t-28: 28px;
  --t-44: 44px;
  --t-72: 72px;
  --t-120: 120px;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --ease: cubic-bezier(.2, .7, .3, 1);
}

/* ---------- 02 reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5, p,
figure, blockquote, dl, dd,
ul, ol { margin: 0; }

ul[class],
ol[class] { list-style: none; padding: 0; }

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

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

a { color: inherit; }

main { display: block; }

:where(a, button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--barley);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- 03 中文排版与页面底色 ---------- */
body {
  padding-top: var(--bar-h);
  background-color: var(--ink-deep);
  background-image:
    repeating-linear-gradient(90deg, rgba(245, 238, 226, .022) 0 1px, transparent 1px 4px),
    radial-gradient(120% 78% at 84% -12%, rgba(23, 163, 152, .16), transparent 62%),
    radial-gradient(92% 64% at 0% 102%, rgba(217, 58, 43, .13), transparent 66%),
    radial-gradient(70% 50% at 50% 40%, rgba(27, 42, 85, .55), transparent 72%);
  background-attachment: fixed;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--t-16);
  line-height: 1.85;
  letter-spacing: .01em;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.18;
  color: var(--paper);
}

h1 { font-size: clamp(var(--t-44), 7vw, var(--t-120)); }
h2 { font-size: clamp(var(--t-28), 4.2vw, var(--t-72)); }
h3 { font-size: clamp(var(--t-20), 2.4vw, var(--t-28)); }
h4 { font-size: var(--t-20); }

strong { color: var(--barley); font-weight: 700; }

::selection {
  background: var(--crimson);
  color: var(--paper);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--barley);
  color: var(--ink-deep);
  font-family: var(--font-mono);
  font-size: var(--t-13);
  text-decoration: none;
  border: 1px solid var(--ink-deep);
  transform: translateY(-160%);
  transition: transform .18s var(--ease);
}

.skip-link:focus-visible,
.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 04 通用组件 ---------- */
.flag-rule {
  display: block;
  height: 6px;
  width: 100%;
  background: linear-gradient(90deg,
    var(--crimson) 0 20%,
    var(--gold) 20% 40%,
    var(--turquoise) 40% 62%,
    var(--barley) 62% 80%,
    var(--clay) 80% 100%);
}

.container {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow {
  max-width: 860px;
}

.section {
  padding-block: clamp(44px, 6vw, 88px);
}

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 20px;
  margin-bottom: clamp(20px, 3vw, 36px);
  padding-bottom: 14px;
  border-bottom: var(--line);
}

.section__index {
  font-family: var(--font-mono);
  font-size: var(--t-13);
  letter-spacing: .18em;
  color: var(--crimson);
}

.section__title {
  font-size: clamp(var(--t-28), 3.6vw, var(--t-44));
}

.kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .26em;
  color: var(--crimson);
  text-transform: uppercase;
}

.vertical-note {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .32em;
  color: var(--gold);
  line-height: 1.4;
}

.prose {
  font-size: var(--t-18);
  line-height: 2;
  color: var(--paper);
  max-width: 68ch;
}

.prose p { margin-bottom: 1.5em; }
.prose ul,
.prose ol { margin: 0 0 1.5em 1.2em; }
.prose li { margin-bottom: .5em; }
.prose a {
  color: var(--barley);
  text-decoration: none;
  border-bottom: 1px solid var(--turquoise);
}
.prose a:hover { border-bottom-color: var(--barley); }

.paper-note {
  background: var(--paper);
  color: var(--ink-deep);
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--clay);
  box-shadow: 8px 8px 0 rgba(180, 89, 59, .3);
  font-size: var(--t-18);
  line-height: 1.95;
}

.paper-note strong { color: var(--clay); }

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

.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-12 { grid-column: span 12; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .08em;
  color: var(--mist);
  padding-block: 18px;
}

.breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px dotted rgba(23, 163, 152, .7);
}

.breadcrumb a:hover { color: var(--barley); }

.breadcrumb__sep { color: var(--gold); }

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  font-family: var(--font-body);
  font-size: var(--t-16);
  font-weight: 500;
  letter-spacing: .06em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .16s var(--ease), background-color .16s var(--ease),
              border-color .16s var(--ease), color .16s var(--ease),
              box-shadow .16s var(--ease);
}

.btn--primary {
  background: var(--crimson);
  color: var(--paper);
  border-color: rgba(227, 178, 60, .55);
  box-shadow: 4px 4px 0 rgba(227, 178, 60, .28);
}

.btn--primary:hover {
  transform: translateY(-2px);
  border-color: var(--gold);
  box-shadow: 4px 6px 0 rgba(227, 178, 60, .38);
}

.btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: rgba(140, 147, 166, .55);
}

.btn--ghost:hover {
  transform: translateY(-2px);
  color: var(--barley);
  border-color: var(--gold);
}

.btn--sm {
  padding: 8px 16px;
  font-size: var(--t-13);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .14em;
  border: 1px solid currentColor;
  color: var(--barley);
}

.tag--crimson { color: #F08070; border-color: rgba(217, 58, 43, .8); }
.tag--turquoise { color: #5FD6C9; border-color: rgba(23, 163, 152, .8); }
.tag--gold { color: var(--gold); border-color: rgba(227, 178, 60, .8); }
.tag--clay { color: #E29B7E; border-color: rgba(180, 89, 59, .9); }

.archive-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink);
  border: var(--line);
  box-shadow:
    7px 7px 0 rgba(16, 27, 59, .9),
    8px 8px 0 rgba(140, 147, 166, .28);
  transition: transform .16s var(--ease), border-color .16s var(--ease),
              box-shadow .16s var(--ease);
}

.archive-card:hover {
  transform: translate(-2px, -4px);
  border-color: rgba(227, 178, 60, .8);
  box-shadow:
    9px 11px 0 rgba(16, 27, 59, .9),
    10px 12px 0 rgba(227, 178, 60, .28);
}

.archive-card__tag {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .16em;
  color: var(--gold);
  padding: 2px 9px;
  border: 1px solid rgba(227, 178, 60, .6);
}

.archive-card__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--t-20);
  line-height: 1.4;
  color: var(--paper);
}

.archive-card__meta {
  margin-top: auto;
  padding-top: 12px;
  border-top: var(--line);
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .1em;
  color: var(--mist);
}

.media-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid rgba(227, 178, 60, .38);
  background-color: var(--ink);
  background-image:
    linear-gradient(180deg, rgba(227, 178, 60, .2), transparent 58%),
    repeating-linear-gradient(118deg,
      rgba(217, 58, 43, .34) 0 12px,
      rgba(242, 208, 107, .26) 12px 24px,
      rgba(23, 163, 152, .3) 24px 36px,
      rgba(16, 27, 59, .3) 36px 48px);
}

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

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }

.reveal { will-change: opacity, transform; }

html.js .reveal {
  opacity: 0;
  transform: translateY(12px);
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: none;
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}

/* ---------- 05 头部框架 ---------- */
.site-header {
  position: relative;
  z-index: 90;
}

.frame-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  height: var(--bar-h);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  padding: 0 clamp(14px, 2.4vw, 32px);
  background: rgba(27, 42, 85, .97);
  border-bottom: 1px solid rgba(227, 178, 60, .34);
  box-shadow: 0 1px 0 rgba(16, 27, 59, .95), 0 8px 24px rgba(16, 27, 59, .35);
}

.flag-rule--top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.frame-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--paper);
  flex: 0 0 auto;
}

.frame-brand__mark {
  position: relative;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: conic-gradient(from 90deg,
    var(--crimson), var(--gold), var(--turquoise), var(--barley), var(--crimson));
  flex: 0 0 auto;
}

.frame-brand__mark::after {
  content: "";
  position: absolute;
  inset: 7px;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 1px rgba(227, 178, 60, .85);
}

.frame-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.frame-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--t-20);
  letter-spacing: .04em;
  color: var(--paper);
}

.frame-brand__domain {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .06em;
  color: var(--rock);
}

.frame-tagline {
  font-size: var(--t-13);
  letter-spacing: .34em;
  color: var(--barley);
  padding-left: clamp(12px, 1.8vw, 24px);
  border-left: 1px solid rgba(227, 178, 60, .38);
  white-space: nowrap;
}

.frame-meter {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .12em;
  color: var(--gold);
}

.frame-meter__index { color: var(--gold); }

.frame-meter__track {
  display: block;
  width: clamp(56px, 9vw, 140px);
  height: 4px;
  background: rgba(140, 147, 166, .32);
  overflow: hidden;
}

.frame-meter__fill {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--turquoise), var(--gold) 55%, var(--crimson));
  transition: width .12s linear;
}

.frame-meter__word {
  color: var(--rock);
  letter-spacing: .2em;
}

.frame-quick {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 20px);
}

.frame-quick__link {
  font-size: var(--t-13);
  color: var(--mist);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(23, 163, 152, .55);
  transition: color .16s var(--ease), border-color .16s var(--ease);
  white-space: nowrap;
}

.frame-quick__link:hover {
  color: var(--barley);
  border-bottom-color: var(--barley);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid rgba(227, 178, 60, .5);
  color: var(--barley);
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .18em;
  cursor: pointer;
}

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--barley);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child {
  transform: translateY(3px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* 竖排导航栏：桌面下作为版式左边框 */
.rail-nav {
  position: fixed;
  top: var(--bar-h);
  left: 0;
  bottom: 0;
  z-index: 70;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 20px 0 24px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--ink-deep);
  background-image:
    repeating-linear-gradient(0deg, rgba(245, 238, 226, .018) 0 1px, transparent 1px 5px),
    linear-gradient(180deg, rgba(227, 178, 60, .07), transparent 45%);
  border-right: 1px solid rgba(140, 147, 166, .3);
}

.rail-nav__label {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .44em;
  color: var(--gold);
}

.rail-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  width: 100%;
}

.rail-item { width: 100%; }

.rail-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 11px 4px;
  text-decoration: none;
  color: var(--mist);
  border-left: 3px solid transparent;
  transition: color .16s var(--ease), background-color .16s var(--ease),
              border-color .16s var(--ease);
}

.rail-link:hover {
  color: var(--paper);
  background: rgba(27, 42, 85, .9);
}

.rail-link:hover .rail-link__num { color: var(--gold); }

.rail-link__num {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .06em;
  color: var(--rock);
  transition: color .16s var(--ease);
}

.rail-link__text {
  writing-mode: vertical-rl;
  font-size: var(--t-13);
  letter-spacing: .22em;
  line-height: 1.2;
}

.rail-link[aria-current="page"] {
  color: var(--barley);
  background: var(--ink);
  border-left-color: var(--crimson);
}

.rail-link[aria-current="page"] .rail-link__num { color: var(--gold); }

.rail-quick {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  width: 64%;
  padding-top: 16px;
  border-top: var(--line);
}

.rail-quick__link {
  writing-mode: vertical-rl;
  font-size: var(--t-12);
  letter-spacing: .18em;
  color: var(--turquoise);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.rail-quick__link:hover { color: var(--barley); }

/* ---------- 06 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 120px);
  background: var(--ink);
  background-image:
    linear-gradient(180deg, rgba(16, 27, 59, .5), rgba(16, 27, 59, .92)),
    repeating-linear-gradient(90deg, rgba(245, 238, 226, .016) 0 1px, transparent 1px 6px);
  border-top: 1px solid rgba(227, 178, 60, .38);
  color: var(--mist);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.45fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  max-width: var(--page-max);
  margin-inline: auto;
  padding: clamp(36px, 5vw, 64px) var(--gutter) clamp(24px, 3vw, 40px);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--t-28);
  letter-spacing: .04em;
  color: var(--paper);
}

.footer-brand__line {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .12em;
  color: var(--gold);
}

.footer-brand__summary {
  margin-top: 16px;
  max-width: 34ch;
  font-size: var(--t-13);
  line-height: 1.95;
  color: var(--mist);
}

.footer-brand .btn { margin-top: 20px; }

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

.footer-col__title,
.footer-contact__title {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .28em;
  color: var(--gold);
  padding-bottom: 8px;
  margin-bottom: 14px;
  border-bottom: var(--line);
}

.footer-link-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  display: inline-block;
  width: fit-content;
  font-size: var(--t-13);
  color: var(--mist);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.footer-link:hover {
  color: var(--barley);
  border-bottom-color: var(--turquoise);
}

.footer-contact__item {
  display: flex;
  gap: 10px;
  font-size: var(--t-13);
  line-height: 1.8;
  margin-bottom: 6px;
}

.footer-contact__key {
  flex: 0 0 40px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  color: var(--rock);
  padding-top: 3px;
}

.footer-contact__value {
  color: var(--paper);
  word-break: break-word;
}

.footer-contact__value a {
  color: var(--barley);
  text-decoration: none;
  border-bottom: 1px solid rgba(23, 163, 152, .6);
}

.footer-contact__note {
  margin-top: 14px;
  font-size: var(--t-12);
  line-height: 1.85;
  color: var(--rock);
}

.footer-base {
  border-top: 1px solid rgba(140, 147, 166, .24);
  background: rgba(16, 27, 59, .6);
}

.footer-base__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 28px;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: 16px var(--gutter);
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .06em;
  color: var(--rock);
}

.footer-base__icp { color: var(--mist); }

.footer-base__note { margin-left: auto; }

body.nav-open { overflow: hidden; }

/* ---------- 07 响应式 ---------- */
@media (max-width: 1180px) {
  .frame-tagline { display: none; }
}

@media (max-width: 1080px) {
  .footer-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 980px) {
  .frame-meter__word { display: none; }
}

@media (min-width: 900px) {
  body { padding-left: var(--rail-w); }
}

@media (max-width: 899px) {
  :root { --bar-h: 64px; }

  body { padding-left: 0; }

  .frame-quick { display: none; }

  .nav-toggle { display: inline-flex; margin-left: auto; }

  .frame-meter { margin-left: auto; }

  .rail-nav {
    width: min(320px, 84vw);
    align-items: stretch;
    gap: 12px;
    padding: 20px 18px 32px;
    background: var(--ink);
    border-right: 1px solid rgba(227, 178, 60, .4);
    box-shadow: 18px 0 40px rgba(16, 27, 59, .55);
    transform: translateX(-104%);
    visibility: hidden;
    transition: transform .26s var(--ease), visibility .26s step-end;
  }

  .rail-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
    transition: transform .26s var(--ease), visibility 0s;
  }

  .rail-nav__label {
    writing-mode: horizontal-tb;
    letter-spacing: .3em;
    padding-bottom: 12px;
    border-bottom: var(--line);
  }

  .rail-link {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 14px;
    padding: 13px 12px;
    border-left: 3px solid transparent;
    border-bottom: 1px solid rgba(140, 147, 166, .22);
  }

  .rail-link__text {
    writing-mode: horizontal-tb;
    font-size: var(--t-16);
    letter-spacing: .12em;
  }

  .rail-quick {
    margin-top: 8px;
    width: 100%;
    flex-direction: row;
    justify-content: flex-start;
    gap: 18px;
  }

  .rail-quick__link {
    writing-mode: horizontal-tb;
    font-size: var(--t-13);
  }

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

@media (max-width: 760px) {
  .grid-12 > [class^="col-"] { grid-column: 1 / -1; }
  .footer-inner { grid-template-columns: minmax(0, 1fr); }
  .footer-base__note { margin-left: 0; width: 100%; }
}

@media (max-width: 520px) {
  .frame-brand__domain { display: none; }
  .frame-meter__track { width: 46px; }
  .footer-nav { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 08 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

  html.js .reveal,
  html.js .reveal.is-visible {
    opacity: 1;
    transform: none;
  }

  .archive-card:hover,
  .btn:hover { transform: none; }
}