/* =========================================================
   亚投代理中心 · 站内快照年鉴
   共享样式 /assets/site.css
   1 重置  2 变量  3 基础排版  4 焦点与可访问
   5 按钮  6 头部框架  7 页脚  8 通用组件  9 动效与响应式
   ========================================================= */

/* ---------- 1 重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5, p, ul, ol, li, dl, dt, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, picture, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2 变量 ---------- */
:root {
  --mist: #E7EAEC;
  --paper: #F7F8F8;
  --paper-dim: #EFF2F3;
  --ink: #22282C;
  --deep: #0E2A33;
  --peacock: #0F6E8C;
  --cyan: #17B0C4;
  --ochre: #C25E2A;
  --gold: #D8A63C;
  --line: #B9C0C5;
  --ink-soft: #556069;

  --rail-w: 238px;
  --strip-h: 40px;
  --frame: 3px;

  --shadow-hard: 6px 6px 0 var(--ink);
  --shadow-hard-sm: 3px 3px 0 var(--ink);
  --ease: cubic-bezier(.2, .6, .3, 1);

  --font-display: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', 'Roboto Mono', ui-monospace, monospace;
}

/* ---------- 3 基础排版 ---------- */
body {
  min-height: 100vh;
  margin: 0;
  background-color: var(--mist);
  background-image:
    repeating-linear-gradient(0deg, rgba(15, 110, 140, .05) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(90deg, rgba(15, 110, 140, .05) 0 1px, transparent 1px 96px);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.16;
  color: var(--ink);
  text-wrap: balance;
}
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.08rem, 1.6vw, 1.35rem); }
h4 { font-size: 1rem; }

p { text-wrap: pretty; }

.mono { font-family: var(--font-mono); letter-spacing: .06em; }

/* ---------- 4 焦点与可访问 ---------- */
:focus-visible {
  outline: 3px solid var(--ochre);
  outline-offset: 3px;
  border-radius: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0; left: 0;
  z-index: 200;
  transform: translateY(-130%);
  padding: .7rem 1.1rem;
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--cyan);
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .1em;
  transition: transform 160ms var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 5 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .62rem 1.05rem;
  border: 2px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .02em;
  text-align: center;
  box-shadow: 4px 4px 0 var(--ink);
  transition: transform 140ms var(--ease), box-shadow 140ms var(--ease),
              background-color 140ms linear, color 140ms linear, border-color 140ms linear;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--ink); }
.btn:active { transform: translate(1px, 1px); box-shadow: 2px 2px 0 var(--ink); }

.btn--primary { background: var(--peacock); color: var(--paper); }
.btn--primary:hover { background: var(--cyan); color: var(--deep); }

.btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--paper);
  box-shadow: 4px 4px 0 var(--gold);
}
.btn--ghost:hover { background: var(--paper); color: var(--deep); }

.btn--warm { background: var(--gold); color: var(--deep); }
.btn--warm:hover { background: var(--ochre); color: var(--paper); }

.btn--small { padding: .42rem .78rem; font-size: .82rem; box-shadow: var(--shadow-hard-sm); }
.btn--block { width: 100%; }

/* ---------- 6 头部框架 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--paper);
  border-bottom: var(--frame) solid var(--ink);
  font-family: var(--font-body);
}

.frame-rail { display: none; }

/* 快照状态条 */
.header-strip {
  position: relative;
  display: flex;
  align-items: center;
  gap: .55rem;
  padding: .34rem .8rem;
  background: var(--deep);
  color: #DCE6EA;
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .1em;
  overflow: hidden;
}
.header-strip__tag {
  padding: .12rem .42rem;
  background: var(--cyan);
  color: var(--deep);
  font-weight: 700;
  letter-spacing: .16em;
  white-space: nowrap;
}
.header-strip__item { color: #9FB4BB; white-space: nowrap; }
.header-strip__item b { color: var(--gold); font-weight: 700; }
.header-strip__item--wide { display: none; }
.header-strip__item--muted { color: #7E9AA3; }
.header-strip__spacer { flex: 1 1 auto; }
.header-strip__progress {
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  transform: scaleX(0);
  transform-origin: 0 50%;
}

/* 核心行 */
.header-core {
  position: relative;
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .58rem .8rem;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .45rem .55rem;
  border: 2px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  box-shadow: var(--shadow-hard-sm);
  transition: background-color 140ms linear, color 140ms linear;
}
.nav-toggle__glyph { display: grid; gap: 3px; width: 16px; }
.nav-toggle__glyph span { display: block; height: 2px; background: currentColor; }
.nav-toggle__glyph span:nth-child(2) { width: 70%; }
.nav-toggle__text { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .14em; }
.site-header[data-open] .nav-toggle,
.nav-toggle[aria-expanded="true"] {
  background: var(--peacock);
  color: var(--paper);
}

.brand { display: inline-flex; align-items: center; gap: .55rem; min-width: 0; }
.brand__seal {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  background: var(--deep);
  color: var(--gold);
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--cyan);
  font-family: var(--font-display);
  font-size: .78rem;
  font-weight: 900;
}
.brand__stack { display: flex; flex-direction: column; min-width: 0; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.02rem;
  line-height: 1.18;
  letter-spacing: .01em;
  color: var(--ink);
}
.brand__descriptor {
  font-family: var(--font-mono);
  font-size: .6rem;
  line-height: 1.5;
  letter-spacing: .3em;
  color: var(--peacock);
}

.header-cta { display: none; }

/* 抽屉导航 */
.site-nav {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 95;
  width: min(86vw, 330px);
  display: flex;
  flex-direction: column;
  gap: .7rem;
  padding: 1.15rem 1rem 1.4rem;
  background: var(--deep);
  color: var(--paper);
  border-right: 4px solid var(--cyan);
  box-shadow: 12px 0 0 rgba(14, 42, 51, .16);
  overflow-y: auto;
  transform: translateX(-104%);
  transition: transform 200ms var(--ease);
}
.site-nav__caption {
  padding-bottom: .55rem;
  border-bottom: 1px solid rgba(255, 255, 255, .16);
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .32em;
  color: var(--cyan);
}
.site-nav__list { display: flex; flex-direction: column; }
.site-nav__item { border-bottom: 1px solid rgba(255, 255, 255, .1); }
.site-nav__item:first-child { border-top: 1px solid rgba(255, 255, 255, .1); }
.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  padding: .68rem .3rem .68rem .1rem;
  color: #BFD0D6;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .98rem;
  transition: color 140ms linear, background-color 140ms linear,
              box-shadow 140ms linear, padding-left 140ms var(--ease);
}
.site-nav__link:hover {
  color: var(--paper);
  background: rgba(23, 176, 196, .12);
  padding-left: .55rem;
}
.site-nav__link[aria-current="page"] {
  color: #FFFFFF;
  background: rgba(23, 176, 196, .2);
  box-shadow: inset 4px 0 0 var(--cyan);
  padding-left: .55rem;
}
.site-nav__no {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--gold);
}
.site-nav__link[aria-current="page"] .site-nav__no { color: var(--cyan); }
.site-nav__label { flex: 1 1 auto; }
.site-nav__foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  padding-top: .9rem;
  border-top: 1px solid rgba(255, 255, 255, .16);
}
.site-nav__cta { width: 100%; }
.site-nav__meta {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .14em;
  color: #7E9AA3;
}

.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(14, 42, 51, .55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms linear;
}
.site-header[data-open] .site-nav { transform: translateX(0); }
.site-header[data-open] .nav-scrim { opacity: 1; pointer-events: auto; }

@media (max-width: 559.98px) {
  .header-strip__item--muted { display: none; }
}

@media (min-width: 720px) and (max-width: 1079.98px) {
  .header-cta { display: inline-flex; margin-left: auto; }
}

/* 桌面：书脊式固定导航 */
@media (min-width: 1080px) {
  html { scroll-padding-top: calc(var(--strip-h) + 16px); }

  body {
    padding-left: var(--rail-w);
    padding-top: var(--strip-h);
  }

  .site-header {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--rail-w);
    display: flex;
    flex-direction: column;
    background: var(--deep);
    border-bottom: 0;
    border-right: var(--frame) solid var(--ink);
  }

  .frame-rail {
    display: block;
    position: absolute;
    top: 0; right: 0; bottom: 0;
    width: 16px;
    background: repeating-linear-gradient(to bottom, rgba(216, 166, 60, .75) 0 2px, transparent 2px 18px);
    pointer-events: none;
  }
  .frame-rail__label {
    position: absolute;
    bottom: 1.2rem;
    left: 50%;
    transform: translateX(-50%);
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: .58rem;
    letter-spacing: .34em;
    color: rgba(216, 166, 60, .85);
    white-space: nowrap;
  }

  .header-strip {
    position: fixed;
    top: 0; left: var(--rail-w); right: 0;
    height: var(--strip-h);
    padding: 0 1rem;
    border-bottom: 2px solid var(--ink);
  }

  .header-core {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: .9rem;
    padding: 1.15rem 1.35rem 1.15rem 1rem;
    position: relative;
    z-index: 2;
  }

  .nav-toggle { display: none; }
  .nav-scrim { display: none; }

  .brand { align-items: flex-start; }
  .brand__seal { background: var(--paper); color: var(--deep); box-shadow: 3px 3px 0 var(--gold); }
  .brand__name { color: var(--paper); font-size: 1.12rem; }
  .brand__descriptor { color: var(--cyan); letter-spacing: .26em; }

  .site-nav {
    position: static;
    transform: none;
    width: auto;
    flex: 1 1 auto;
    padding: 0;
    border-right: 0;
    box-shadow: none;
    background: transparent;
    overflow: visible;
    color: var(--paper);
  }
  .site-nav__caption { color: var(--gold); }
  .site-nav__list { margin-top: .2rem; }
  .site-nav__link { font-size: .95rem; padding-block: .62rem; }

  .header-cta { display: none; }
}

/* ---------- 7 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--deep);
  color: #C8D5DA;
  border-top: var(--frame) solid var(--ink);
}
.footer-rule {
  height: 10px;
  background: repeating-linear-gradient(to right, var(--gold) 0 12px, transparent 12px 26px);
  opacity: .55;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem 2.4rem;
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding: 2.6rem 1.1rem 1.6rem;
}
@media (min-width: 720px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); padding-inline: 1.6rem; }
}
@media (min-width: 1080px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1.5fr;
    gap: 2.4rem;
    padding: 3.1rem 2.2rem 2rem;
  }
}

.footer-brand { display: flex; flex-direction: column; gap: .3rem; }
.footer-brand__seal {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  margin-bottom: .55rem;
  background: var(--paper);
  color: var(--deep);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--gold);
  font-family: var(--font-display);
  font-size: .82rem;
  font-weight: 900;
}
.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.18rem;
  letter-spacing: -.01em;
  color: var(--paper);
}
.footer-brand__descriptor {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .3em;
  color: var(--cyan);
}
.footer-brand__domain {
  margin-top: .5rem;
  font-size: .68rem;
  letter-spacing: .1em;
  color: #7E9AA3;
}

.footer-col { display: flex; flex-direction: column; gap: .65rem; }
.footer-col__title {
  padding-left: .55rem;
  border-left: 4px solid var(--gold);
  font-family: var(--font-display);
  font-size: .96rem;
  font-weight: 900;
  letter-spacing: .04em;
  color: var(--paper);
}
.footer-col__list { display: flex; flex-direction: column; gap: .4rem; }
.footer-col__link {
  display: inline-block;
  font-size: .92rem;
  color: #B7C8CE;
  border-bottom: 1px solid transparent;
  transition: color 140ms linear, border-color 140ms linear;
}
.footer-col__link:hover { color: var(--paper); border-bottom-color: var(--cyan); }

.footer-contact { display: flex; flex-direction: column; gap: .7rem; }
.footer-contact__list { display: flex; flex-direction: column; gap: .45rem; }
.footer-contact__row {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: .6rem;
  align-items: baseline;
}
.footer-contact__key {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .16em;
  color: var(--cyan);
}
.footer-contact__val { font-size: .88rem; line-height: 1.65; color: #DCE6EA; }
.footer-contact__note {
  padding-top: .6rem;
  border-top: 1px dashed rgba(216, 166, 60, .5);
  font-size: .76rem;
  line-height: 1.7;
  color: #93A6AD;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.4rem;
  justify-content: space-between;
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding: 1rem 1.1rem 1.8rem;
  border-top: 1px solid rgba(255, 255, 255, .14);
}
@media (min-width: 720px) { .footer-base { padding-inline: 1.6rem; } }
@media (min-width: 1080px) { .footer-base { padding-inline: 2.2rem; } }
.footer-base__item {
  font-size: .78rem;
  letter-spacing: .04em;
  color: #93A6AD;
}
.footer-base__item--mono { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .1em; }

/* ---------- 8 通用组件 ---------- */
.wrap {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: 1.05rem;
}
@media (min-width: 720px) { .wrap { padding-inline: 1.6rem; } }
@media (min-width: 1080px) { .wrap { max-width: 1240px; padding-inline: 2.2rem; } }

.page-space { padding-block: 2.2rem 3rem; }
@media (min-width: 1080px) { .page-space { padding-block: 3rem 4.4rem; } }

.stack { display: flex; flex-direction: column; gap: .9rem; }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; }
.grid { display: grid; gap: 1.1rem; grid-template-columns: 1fr; }
@media (min-width: 720px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 960px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.split { display: grid; gap: 1.6rem; grid-template-columns: 1fr; }
@media (min-width: 1024px) {
  .split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
  .split--reverse { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
}

/* 章节头 */
.section { margin-block: 2.4rem; }
.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: .6rem 1rem;
  padding-bottom: .6rem;
  margin-bottom: 1.4rem;
  border-bottom: var(--frame) solid var(--ink);
}
.section__title { font-size: clamp(1.35rem, 3vw, 1.9rem); }
.section__note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--ink-soft);
}

/* 展签与印章 */
.plate {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .24rem .52rem;
  border: 2px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .16em;
  box-shadow: var(--shadow-hard-sm);
}
.plate--cool { border-color: var(--peacock); background: #E1F0F4; color: #0B4C61; box-shadow: 3px 3px 0 var(--peacock); }
.plate--warm { border-color: var(--ochre); background: #F7EADF; color: #8A3F17; box-shadow: 3px 3px 0 var(--ochre); }
.plate--gold { border-color: #A87A18; background: #FBF1D8; color: #6E4F0E; box-shadow: 3px 3px 0 var(--gold); }

.stamp {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .2rem .48rem;
  border: 2px dashed var(--ochre);
  color: var(--ochre);
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .18em;
  transform: rotate(-2deg);
}

.note-rail {
  writing-mode: vertical-rl;
  padding-left: .4rem;
  border-left: 2px solid var(--line);
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .28em;
  color: var(--peacock);
}

/* 卡片 */
.card {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  padding: 1.1rem 1.15rem 1.25rem;
  background: var(--paper);
  border: var(--frame) solid var(--ink);
  box-shadow: var(--shadow-hard);
}
.card--cool { border-top: 8px solid var(--cyan); }
.card--warm { border-top: 8px solid var(--gold); }
.card--ink { background: var(--deep); color: #DCE6EA; }
.card__no {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--peacock);
}
.card--ink .card__no { color: var(--cyan); }
.card__title { font-size: 1.12rem; }
.card--ink .card__title { color: var(--paper); }
.card__body { font-size: .95rem; line-height: 1.75; color: var(--ink-soft); }
.card--ink .card__body { color: #B7C8CE; }
.card__foot {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  padding-top: .7rem;
  border-top: 1px solid var(--line);
}
.card--ink .card__foot { border-color: rgba(255, 255, 255, .18); }

/* 数据台账 */
.ledger { border: 2px solid var(--ink); background: var(--paper); }
.ledger__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: .2rem;
  padding: .7rem .9rem;
  border-bottom: 1px solid var(--line);
}
.ledger__row:last-child { border-bottom: 0; }
.ledger__row:nth-child(odd) { background: var(--paper-dim); }
@media (min-width: 640px) {
  .ledger__row { grid-template-columns: 9rem 1fr; gap: 1rem; align-items: baseline; }
}
.ledger__key {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--peacock);
}
.ledger__val { font-size: .95rem; }

/* 刻度带 */
.ticks { display: flex; flex-wrap: wrap; gap: .35rem; align-items: flex-end; }
.ticks__item {
  min-width: 46px;
  padding-top: .4rem;
  border-top: 2px solid var(--line);
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .1em;
  color: var(--ink-soft);
}
.ticks__item.is-on { border-top-color: var(--ochre); color: var(--deep); }

/* 主题筛选 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  padding: .5rem .6rem;
  border: 2px solid var(--ink);
  background: var(--paper);
}
.filter-bar__label {
  margin-right: .2rem;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .18em;
  color: var(--ink-soft);
}
.filter-btn {
  padding: .28rem .62rem;
  border: 2px solid var(--line);
  background: var(--paper-dim);
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  transition: background-color 140ms linear, color 140ms linear,
              border-color 140ms linear, box-shadow 140ms linear;
}
.filter-btn:hover { border-color: var(--peacock); color: var(--peacock); }
.filter-btn.is-active,
.filter-btn[aria-pressed="true"] {
  background: var(--peacock);
  border-color: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow-hard-sm);
}
[data-filter-item].is-hidden { display: none; }

/* 图文容器 */
.figure {
  position: relative;
  background: var(--paper);
  border: var(--frame) solid var(--ink);
  box-shadow: var(--shadow-hard);
}
.figure__media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(135deg, #DCE7EA 0%, #E7EAEC 45%, #CBD8DC 100%);
}
.figure__media > img,
.figure__media > svg,
.figure__media > picture > img { width: 100%; height: 100%; object-fit: cover; }
.figure__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(14, 42, 51, .08) 0 1px, transparent 1px 28px);
  mix-blend-mode: multiply;
}
.figure--cool .figure__media { background: linear-gradient(140deg, #E4F3F6 0%, #A9DCE5 55%, #17B0C4 130%); }
.figure--warm .figure__media { background: linear-gradient(140deg, #FBF0DC 0%, #EBC98A 55%, #D8A63C 130%); }
.figure--ochre .figure__media { background: linear-gradient(140deg, #F8E9DE 0%, #E4B191 55%, #C25E2A 130%); }
.figure--tall .figure__media { aspect-ratio: 4 / 5; }
.figure--wide .figure__media { aspect-ratio: 21 / 9; }
.figure__plate { position: absolute; top: .65rem; left: .65rem; z-index: 2; }
.figure__caption {
  padding: .55rem .7rem;
  border-top: 2px solid var(--ink);
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .12em;
  color: var(--ink-soft);
}

/* 框景容器 */
.frame-box {
  position: relative;
  padding: 1.6rem 1.15rem 1.4rem;
  border: var(--frame) solid var(--ink);
  background: var(--paper);
  box-shadow: 8px 8px 0 var(--ink);
}
.frame-box__ticks {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 12px;
  background: repeating-linear-gradient(to right, var(--ink) 0 2px, transparent 2px 22px);
  opacity: .45;
  pointer-events: none;
}

/* 面包屑 */
.breadcrumb { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .14em; color: var(--ink-soft); }
.breadcrumb__list { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; }
.breadcrumb__item { display: inline-flex; align-items: center; gap: .4rem; }
.breadcrumb__item + .breadcrumb__item::before { content: "›"; color: var(--line); }
.breadcrumb__link { color: var(--peacock); }
.breadcrumb__link:hover { text-decoration: underline; }
.breadcrumb__current { color: var(--ink); }

/* 正文窄栏 */
.prose { max-width: 68ch; font-size: 1rem; line-height: 1.85; color: #33404A; }
.prose p + p { margin-top: .95rem; }
.prose h2 { margin-top: 1.8rem; margin-bottom: .7rem; }
.prose h3 { margin-top: 1.3rem; margin-bottom: .5rem; }
.prose ul { list-style: disc; padding-left: 1.2rem; margin-block: .8rem; }
.prose ol { list-style: decimal; padding-left: 1.3rem; margin-block: .8rem; }
.prose li + li { margin-top: .35rem; }
.prose a {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  text-decoration-color: var(--cyan);
}
.prose strong { font-weight: 700; color: var(--ink); }

/* ---------- 9 动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}
[data-reveal].is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .btn:hover { transform: none; }
}