/* =========================================================
   qilin-denglou.com.cn — /assets/site.css
   共享外壳：侧边轨道导航 + 页脚 + 通用组件
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body { margin: 0; }

h1, h2, h3, h4, h5, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, picture, svg, video { display: block; max-width: 100%; }
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%; }

/* ---------- tokens ---------- */
:root {
  --ink-950: #0B0C0E;
  --ink-900: #14161A;
  --ink-700: #23262D;
  --gold-500: #D8A94F;
  --gold-300: #F0D79A;
  --jade-500: #2FA98C;
  --ember-500: #E8722F;
  --paper-50: #F5F1E8;
  --text-100: #EDE8DC;
  --text-400: #A7A29A;
  --line-600: #3A3E46;

  --glass: rgba(20, 22, 26, 0.66);
  --rail-w: 240px;
  --top-h: 64px;
  --shell: 1180px;

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

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur: 0.22s;
}

/* ---------- base ---------- */
body {
  min-height: 100vh;
  padding-left: var(--rail-w);
  background-color: var(--ink-950);
  background-image:
    radial-gradient(920px 520px at 78% -10%, rgba(216, 169, 79, 0.10), transparent 62%),
    radial-gradient(720px 440px at 6% 108%, rgba(47, 169, 140, 0.07), transparent 60%),
    repeating-linear-gradient(90deg, rgba(58, 62, 70, 0.22) 0 1px, transparent 1px 120px);
  background-attachment: fixed;
  color: var(--text-100);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--text-100);
  line-height: 1.12;
  letter-spacing: -0.01em;
}
h1 {
  font-size: clamp(34px, 5.2vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
h2 { font-size: clamp(24px, 3.2vw, 40px); }
h3 { font-size: clamp(19px, 2vw, 24px); font-weight: 700; }

.lede {
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.7;
  color: var(--text-400);
  max-width: 34em;
}

.prose p {
  max-width: 36em;
  margin-bottom: 1.1em;
  color: var(--text-100);
}
.prose p:last-child { margin-bottom: 0; }

.num,
[data-year] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

:focus-visible {
  outline: 2px solid var(--gold-300);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- layout primitives ---------- */
.shell {
  width: min(100% - 48px, var(--shell));
  margin-inline: auto;
}

.section { padding: 56px 0; }
.section__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 34px;
  max-width: 54ch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-500);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--gold-500);
}

.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--asym { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); }

/* ---------- surfaces ---------- */
.panel {
  background: var(--glass);
  border: 1px solid var(--line-600);
  border-radius: 3px;
  padding: 26px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.slab {
  background: var(--ink-700);
  border: 1px solid var(--line-600);
  border-radius: 3px;
  padding: 26px;
}

.slab--light {
  background: var(--paper-50);
  border-color: #DAD3C4;
  color: #1A1C20;
}
.slab--light h2,
.slab--light h3 { color: #12141A; }
.slab--light .lede { color: #5A564E; }

.index-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 20px;
  background: var(--ink-700);
  border: 1px solid var(--line-600);
  border-radius: 3px;
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.index-card:hover {
  transform: translateY(-2px);
  border-color: rgba(216, 169, 79, 0.55);
  box-shadow: 0 12px 32px -20px rgba(216, 169, 79, 0.55);
}

.ornament {
  width: 46px;
  height: 46px;
  border: 1px solid rgba(216, 169, 79, 0.45);
  position: relative;
  transform: rotate(45deg);
  flex: none;
}
.ornament::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(47, 169, 140, 0.4);
}

.dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold-500);
  box-shadow: 0 0 0 3px rgba(216, 169, 79, 0.14);
  vertical-align: middle;
  margin-right: 8px;
}
.dot--jade {
  background: var(--jade-500);
  box-shadow: 0 0 0 3px rgba(47, 169, 140, 0.16);
}

/* ---------- tags ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  border: 1px solid var(--line-600);
  border-radius: 2px;
  color: var(--text-400);
}
.tag--gold { color: var(--gold-300); border-color: rgba(216, 169, 79, 0.5); }
.tag--jade { color: var(--jade-500); border-color: rgba(47, 169, 140, 0.5); }
.tag--ember { color: var(--ember-500); border-color: rgba(232, 114, 47, 0.5); }

/* ---------- buttons ---------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--text-100);
  --btn-bd: var(--line-600);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: 2px;
  text-align: center;
  cursor: pointer;
  transition:
    background var(--dur) var(--ease),
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--gold { --btn-bg: var(--gold-500); --btn-fg: #0B0C0E; --btn-bd: var(--gold-500); }
.btn--gold:hover { --btn-bg: var(--gold-300); --btn-bd: var(--gold-300); }

.btn--jade { --btn-fg: var(--jade-500); --btn-bd: rgba(47, 169, 140, 0.6); }
.btn--jade:hover { --btn-bg: rgba(47, 169, 140, 0.12); --btn-bd: var(--jade-500); }

.btn--ghost { --btn-bg: rgba(245, 241, 232, 0.03); }
.btn--ghost:hover { --btn-bd: var(--gold-500); --btn-fg: var(--gold-300); }

.btn--sm { min-height: 36px; padding: 8px 14px; font-size: 13px; }
.btn--block { width: 100%; }

/* ---------- breadcrumbs ---------- */
.crumbs {
  padding: 18px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-400);
}
.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.crumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.crumbs__item + .crumbs__item::before {
  content: "/";
  color: var(--line-600);
}
.crumbs a:hover { color: var(--gold-300); }
.crumbs [aria-current="page"] { color: var(--gold-500); }

/* ---------- media ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-600);
  border-radius: 3px;
  aspect-ratio: 16 / 9;
  background-color: var(--ink-900);
  background-image:
    linear-gradient(140deg, rgba(216, 169, 79, 0.10), rgba(11, 12, 14, 0) 55%),
    repeating-linear-gradient(45deg, rgba(58, 62, 70, 0.32) 0 1px, transparent 1px 12px);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--portrait { aspect-ratio: 3 / 4; }
.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-400);
  background: linear-gradient(180deg, transparent, rgba(11, 12, 14, 0.88));
}

/* ---------- segmented control ---------- */
.segmented {
  display: flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line-600);
  border-radius: 3px;
  background: var(--ink-900);
  overflow-x: auto;
  scrollbar-width: none;
}
.segmented::-webkit-scrollbar { display: none; }
.segmented__btn {
  flex: 1 0 auto;
  padding: 9px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--text-400);
  border-radius: 2px;
  transition:
    color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}
.segmented__btn:hover { color: var(--text-100); }
.segmented__btn[aria-pressed="true"] {
  background: rgba(216, 169, 79, 0.14);
  color: var(--gold-300);
}

[data-seg-panel] { display: none; }
[data-seg-panel][data-active] { display: block; }

/* ---------- reveal ---------- */
html[data-motion="ready"] [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
}
html[data-motion="ready"] [data-reveal][data-seen] {
  opacity: 1;
  transform: none;
  transition:
    opacity 0.55s var(--ease),
    transform 0.55s var(--ease);
}

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -70px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--gold-500);
  color: #0B0C0E;
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
  border-radius: 2px;
  transition: top 0.18s var(--ease);
}
.skip-link:focus { top: 12px; }

/* =========================================================
   侧边轨道导航
   ========================================================= */
.rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 70;
  display: flex;
  background: linear-gradient(180deg, #15171C 0%, #101216 58%, #0E1013 100%);
  border-right: 1px solid var(--line-600);
}
.rail::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 40%;
  background: linear-gradient(180deg, var(--gold-500), rgba(216, 169, 79, 0));
}

.rail__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
  height: 100%;
  padding: 26px 20px 26px;
  overflow-y: auto;
  overflow-x: hidden;
}
.rail__inner::-webkit-scrollbar { width: 6px; }
.rail__inner::-webkit-scrollbar-thumb {
  background: var(--line-600);
  border-radius: 3px;
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 2px 4px 18px;
  border-bottom: 1px solid var(--line-600);
}
.brand__mark {
  flex: none;
  width: 40px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 4px 0;
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 900;
  line-height: 1;
  color: var(--gold-500);
  border: 1px solid rgba(216, 169, 79, 0.5);
  background: linear-gradient(160deg, rgba(216, 169, 79, 0.14), rgba(216, 169, 79, 0));
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.brand:hover .brand__mark {
  border-color: var(--gold-300);
  color: var(--gold-300);
}
.brand__text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}
.brand__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--text-100);
}
.brand__tag {
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--text-400);
}

/* 移动端开关（桌面端隐藏） */
.nav-toggle { display: none; }

/* 导航 */
.rail__nav { margin-top: 2px; }
.nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.nav-link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 10px 10px 14px;
  border-radius: 3px;
  transition:
    background var(--dur) var(--ease),
    color var(--dur) var(--ease);
}
.nav-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 2px;
  height: 22px;
  background: var(--gold-500);
  opacity: 0;
  transform: translateY(-50%) scaleY(0.2);
  transition:
    opacity var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.nav-link__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-400);
  transition: color var(--dur) var(--ease);
}
.nav-link__label {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-100);
  transition: color var(--dur) var(--ease);
}
.nav-link:hover { background: rgba(216, 169, 79, 0.07); }
.nav-link:hover .nav-link__label { color: var(--gold-300); }
.nav-link[aria-current="page"] { background: rgba(216, 169, 79, 0.10); }
.nav-link[aria-current="page"]::before {
  opacity: 1;
  transform: translateY(-50%) scaleY(1);
}
.nav-link[aria-current="page"] .nav-link__label { color: var(--gold-500); }
.nav-link[aria-current="page"] .nav-link__index { color: var(--gold-300); }

/* 轨道底部 */
.rail__foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px dashed var(--line-600);
}
.rail__note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-400);
}

/* 滚动进度 */
.rail__progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: rgba(58, 62, 70, 0.6);
  overflow: hidden;
}
.rail__progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--gold-500), var(--ember-500));
}

/* 移动端遮罩（桌面端不出现） */
.rail__scrim { display: none; }

/* =========================================================
   页脚
   ========================================================= */
.site-foot {
  position: relative;
  margin-top: 96px;
  padding: 60px 0 40px;
  background: linear-gradient(180deg, rgba(20, 22, 26, 0) 0%, rgba(20, 22, 26, 0.92) 20%, #101216 100%);
}
.site-foot::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, rgba(216, 169, 79, 0) 0%, var(--gold-500) 16%, rgba(216, 169, 79, 0.18) 62%, rgba(216, 169, 79, 0) 100%);
}

.foot-inner {
  width: min(100% - 48px, var(--shell));
  margin-inline: auto;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px 32px;
}

.foot-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.foot-brand__mark {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--text-100);
}
.foot-brand__desc {
  max-width: 22em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-400);
}
.foot-brand__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-400);
}
.foot-brand__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--jade-500);
  letter-spacing: 0.06em;
}

.foot-col { display: flex; flex-direction: column; }
.foot-col__title {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-600);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--text-400);
}
.foot-col__num { color: var(--gold-500); }

.foot-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.foot-list a {
  position: relative;
  display: inline-block;
  font-size: 14.5px;
  color: var(--text-100);
  transition: color var(--dur) var(--ease);
}
.foot-list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--gold-500);
  transition: width var(--dur) var(--ease);
}
.foot-list a:hover { color: var(--gold-300); }
.foot-list a:hover::after { width: 100%; }

.foot-list--plain li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: var(--text-400);
}
.foot-list--plain li::before {
  content: "";
  flex: none;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--jade-500);
  opacity: 0.7;
}

.foot-contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px 32px;
  margin-top: 46px;
  padding-top: 26px;
  border-top: 1px dashed var(--line-600);
}
.foot-contact__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.foot-contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-400);
}
.foot-contact__value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-100);
  word-break: break-word;
}

.foot-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line-600);
}
.foot-legal__line {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-400);
}

/* =========================================================
   响应式
   ========================================================= */
@media (min-width: 1600px) {
  :root { --rail-w: 272px; }
}

@media (max-width: 1080px) {
  .foot-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 980px) {
  body {
    padding-left: 0;
    padding-top: var(--top-h);
  }

  .rail {
    top: 0;
    right: 0;
    bottom: auto;
    left: 0;
    width: auto;
    height: var(--top-h);
    border-right: 0;
    border-bottom: 1px solid var(--line-600);
    background: #101216;
  }
  .rail::before {
    top: auto;
    bottom: -1px;
    right: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, var(--gold-500), rgba(216, 169, 79, 0));
  }

  .rail__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    height: 100%;
    padding: 0 16px;
    overflow: visible;
  }

  .brand {
    padding: 0;
    border-bottom: 0;
    gap: 10px;
  }
  .brand__mark {
    width: 34px;
    height: 38px;
    font-size: 13px;
  }
  .brand__name { font-size: 16px; }
  .brand__tag { display: none; }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 9px 12px;
    border: 1px solid var(--line-600);
    border-radius: 2px;
    color: var(--text-100);
    font-size: 13px;
    letter-spacing: 0.08em;
  }
  .nav-toggle__bars {
    position: relative;
    display: block;
    width: 18px;
    height: 2px;
    background: currentColor;
    transition: background var(--dur) var(--ease);
  }
  .nav-toggle__bars::before,
  .nav-toggle__bars::after {
    content: "";
    position: absolute;
    left: 0;
    width: 18px;
    height: 2px;
    background: currentColor;
    transition: transform var(--dur) var(--ease);
  }
  .nav-toggle__bars::before { top: -6px; }
  .nav-toggle__bars::after { top: 6px; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

  .rail__nav {
    position: fixed;
    top: var(--top-h);
    left: 0;
    right: 0;
    z-index: 82;
    margin: 0;
    padding: 18px 16px 24px;
    background: #0B0C0E;
    border-bottom: 1px solid var(--line-600);
    max-height: calc(100vh - var(--top-h));
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    transition:
      opacity var(--dur) var(--ease),
      transform var(--dur) var(--ease),
      visibility var(--dur);
  }
  .rail__nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .nav-list { gap: 4px; }
  .nav-link {
    padding: 13px 14px;
    background: rgba(35, 38, 45, 0.5);
  }
  .nav-link__label { font-size: 18px; }

  .rail__foot { display: none; }

  .rail__scrim {
    display: block;
    position: fixed;
    top: var(--top-h);
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 80;
    background: rgba(11, 12, 14, 0.72);
    opacity: 0;
    visibility: hidden;
    transition:
      opacity var(--dur) var(--ease),
      visibility var(--dur);
  }
  .rail__scrim[data-open] {
    opacity: 1;
    visibility: visible;
  }

  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-foot { margin-top: 72px; padding: 48px 0 32px; }
}

@media (max-width: 760px) {
  body { font-size: 16px; }

  .shell,
  .foot-inner { width: min(100% - 32px, var(--shell)); }

  .section { padding: 40px 0; }
  .section__head { margin-bottom: 24px; }

  .grid { gap: 16px; }
  .grid--2,
  .grid--3,
  .grid--4,
  .grid--asym { grid-template-columns: minmax(0, 1fr); }

  .panel,
  .slab { padding: 20px; }

  .foot-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .foot-legal { flex-direction: column; align-items: flex-start; }
  .lede { max-width: none; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  html[data-motion="ready"] [data-reveal] {
    opacity: 1;
    transform: none;
  }
}