/* ============================================================
   金马城 · 全站共享样式 /assets/site.css
   外壳：悬浮胶囊头部 + 深鞍棕页脚 + 通用面板与索引组件
   ============================================================ */

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

:root {
  --saddle: #5A3A22;
  --saddle-deep: #3A2517;
  --gold: #C8963E;
  --amber: #F0A93B;
  --mist: #7C93A8;
  --mist-deep: #3E5468;
  --cream: #F6F1E8;
  --sand: #E7DCCB;
  --track: #C3C8CC;
  --ink: #241A12;
  --grass: #4F6F5A;

  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", ui-monospace, Menlo, Consolas, "Courier New", monospace;

  --shell: 1200px;
  --rail: 220px;
  --gutter: 24px;
  --pad-panel: 48px;
  --radius-panel: 16px;

  --hair: 1px solid var(--track);
  --soft-shadow: 0 1px 1px rgba(36, 26, 18, .03), 0 14px 34px -26px rgba(36, 26, 18, .5);
  --ease: cubic-bezier(.22, .61, .36, 1);
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 116px;
}

body {
  margin: 0;
  background-color: var(--cream);
  background-image:
    radial-gradient(1100px 420px at 8% -10%, rgba(200, 150, 62, .13), transparent 62%),
    radial-gradient(760px 360px at 100% 4%, rgba(124, 147, 168, .13), transparent 60%);
  background-repeat: no-repeat;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: .01em;
  min-height: 100vh;
}

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 700; letter-spacing: -.01em; line-height: 1.22; }
p { margin: 0 0 1em; }
img, picture, svg { max-width: 100%; }
ul, ol { margin: 0; padding: 0; }
button { font: inherit; }

:where(a, button, summary, input, [tabindex]):focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------------- skip link ---------------- */
.skip-link {
  position: absolute;
  left: 18px;
  top: -80px;
  z-index: 99;
  padding: 10px 18px;
  background: var(--saddle);
  color: var(--cream);
  font-size: 14px;
  text-decoration: none;
  border-radius: 0 0 12px 12px;
  transition: top .18s var(--ease);
}
.skip-link:focus { top: 0; }

/* ---------------- 头部：悬浮胶囊浮岛 ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  padding: 14px 20px 6px;
}
.header-shell {
  max-width: var(--shell);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 9px 12px 9px 20px;
  background: rgba(246, 241, 232, .94);
  border: 1px solid var(--track);
  border-radius: 999px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, .7) inset, 0 16px 34px -28px rgba(36, 26, 18, .8);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: box-shadow .18s var(--ease), border-color .18s var(--ease);
}
.site-header[data-stuck] .header-shell {
  border-color: #B6BCC1;
  box-shadow: 0 1px 0 rgba(255, 255, 255, .7) inset, 0 20px 40px -26px rgba(36, 26, 18, .68);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--saddle);
}
.brand__mark {
  position: relative;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border: 2px solid var(--gold);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 58%, rgba(240, 169, 59, .22), rgba(240, 169, 59, 0) 72%);
}
.brand__mark::before {
  content: "";
  position: absolute;
  inset: 8px 7px 8px 9px;
  background: var(--saddle);
  clip-path: polygon(0 0, 100% 50%, 0 100%, 30% 50%);
}
.brand__text { display: grid; line-height: 1.15; }
.brand__name { font-family: var(--serif); font-size: 19px; font-weight: 800; letter-spacing: .05em; }
.brand__tagline { font-family: var(--mono); font-size: 10.5px; letter-spacing: .2em; color: var(--mist-deep); }

/* 导航胶囊 */
.site-nav { flex: 1 1 auto; display: flex; justify-content: center; }
.site-nav__list { display: flex; align-items: center; gap: 2px; list-style: none; margin: 0; padding: 0; }
.site-nav__link {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--ink);
  font-size: 15px;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}
.site-nav__link:hover { background: var(--sand); border-color: var(--track); }
.site-nav__link[aria-current="page"] {
  background: var(--saddle);
  border-color: var(--saddle);
  color: var(--cream);
  font-weight: 500;
}
.site-nav__link.is-active { background: var(--sand); border-color: var(--gold); color: var(--saddle); }

/* 移动端按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  background: var(--sand);
  border: 1px solid var(--track);
  border-radius: 999px;
  color: var(--saddle);
  cursor: pointer;
}
.nav-toggle__bars {
  position: relative;
  width: 18px;
  height: 12px;
  display: inline-block;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--saddle);
  border-radius: 2px;
  transition: transform .18s var(--ease), top .18s var(--ease), opacity .18s var(--ease);
}
.nav-toggle__bars::before { top: 1px; }
.nav-toggle__bars::after { top: 9px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 5px; transform: rotate(-45deg); }
.nav-toggle__label { font-family: var(--mono); font-size: 12px; letter-spacing: .16em; }

.header-actions { display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }

/* 滚动进度 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 80;
  background: linear-gradient(90deg, var(--gold), var(--amber));
  transition: width .1s linear;
}

/* ---------------- 按钮 ---------------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-bd: var(--track);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 17px;
  border: 1px solid var(--btn-bd);
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--sans);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: .02em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease), transform .16s var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { --btn-bg: var(--saddle); --btn-fg: var(--cream); --btn-bd: var(--saddle); }
.btn--primary:hover { --btn-bg: var(--saddle-deep); --btn-bd: var(--saddle-deep); }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--saddle); --btn-bd: #D6C8B6; }
.btn--ghost:hover { --btn-bg: var(--sand); }
.btn--amber { --btn-bg: var(--amber); --btn-fg: var(--saddle-deep); --btn-bd: #D2922F; }
.btn--amber:hover { --btn-bg: #E7A033; }
.btn--mist { --btn-bg: var(--mist-deep); --btn-fg: var(--cream); --btn-bd: var(--mist-deep); }
.btn--mist:hover { --btn-bg: #33475A; }
.btn--sm { padding: 6px 13px; font-size: 13.5px; }

/* ---------------- 布局骨架 ---------------- */
.shell { width: 100%; max-width: var(--shell); margin: 0 auto; padding: 0 20px; }
.section { padding: 56px 0; }
.grid-rail {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: var(--gutter);
  align-items: start;
}
.stack > * + * { margin-top: 20px; }
.auto-grid {
  display: grid;
  gap: var(--gutter);
  grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
}

/* 左侧编号牌 */
.rail {
  position: sticky;
  top: 108px;
  padding: 18px 0 14px;
  background: linear-gradient(180deg, var(--sand), #EFE7DA);
  border: 1px solid var(--track);
  border-radius: 14px;
  box-shadow: var(--soft-shadow);
}
.rail__title {
  margin: 0 18px 12px;
  padding-bottom: 10px;
  border-bottom: var(--hair);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .22em;
  color: var(--saddle);
}
.rail__list { list-style: none; margin: 0; padding: 0; }
.rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 16px;
  border-left: 3px solid transparent;
  color: var(--ink);
  font-size: 15px;
  text-decoration: none;
  transition: background-color .16s var(--ease), border-color .16s var(--ease);
}
.rail__link:hover { background: rgba(255, 255, 255, .66); }
.rail__link[aria-current="page"] { border-left-color: var(--amber); background: var(--cream); color: var(--saddle); }
.rail__num { font-family: var(--mono); font-size: 12.5px; letter-spacing: .1em; color: var(--gold); }

/* ---------------- 堆叠面板 ---------------- */
.panel-stack { display: grid; gap: 56px; }
.panel {
  padding: var(--pad-panel);
  background: #FFFDF9;
  border: var(--hair);
  border-radius: var(--radius-panel);
  box-shadow: var(--soft-shadow);
}
.panel--sand { background: var(--sand); }
.panel--cool { background: #EFF3F6; border-color: #D3DCE3; }
.panel--deep { background: var(--saddle-deep); border-color: var(--saddle-deep); color: #EDE3D6; }
.panel--deep .panel__title,
.panel--deep .section-title { color: var(--cream); }
.panel__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 26px;
  padding-bottom: 16px;
  border-bottom: var(--hair);
}
.panel--deep .panel__head { border-bottom-color: rgba(200, 150, 62, .35); }
.panel__num {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--gold);
}
.panel__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(23px, 3vw, 32px);
  color: var(--saddle);
}
.panel__body > * + * { margin-top: 20px; }

/* ---------------- 文本与装饰 ---------------- */
.display-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(44px, 7.6vw, 96px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--saddle);
}
.display-title em { font-style: normal; color: var(--gold); }
.section-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(27px, 4.2vw, 44px);
  line-height: 1.16;
  color: var(--saddle);
}
.eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--mist-deep);
}
.lede { max-width: 64ch; font-size: 18px; line-height: 1.85; color: #3B2C20; }
.rule-gold { width: 58px; height: 2px; margin: 0; border: 0; background: var(--gold); }
.side-note {
  writing-mode: vertical-rl;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--mist);
}
.side-note--gold { color: var(--gold); }

.prose { max-width: 68ch; font-size: 17px; line-height: 1.85; color: #2E2318; }
.prose h2 { margin: 1.6em 0 .6em; font-size: clamp(22px, 2.6vw, 27px); color: var(--saddle); }
.prose h3 { margin: 1.4em 0 .5em; font-size: 20px; color: var(--saddle); }
.prose p { margin: 0 0 1.05em; }
.prose ul, .prose ol { margin: 0 0 1.1em; padding-left: 1.35em; }
.prose li { margin: .35em 0; }
.prose a {
  color: var(--mist-deep);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 3px;
}
.prose code {
  font-family: var(--mono);
  font-size: .92em;
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--sand);
}
.prose blockquote {
  margin: 1.2em 0;
  padding: 12px 20px;
  border-left: 3px solid var(--gold);
  border-radius: 0 12px 12px 0;
  background: var(--sand);
}

.callout {
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  border: var(--hair);
  border-left: 3px solid var(--amber);
  border-radius: 0 12px 12px 0;
  background: var(--cream);
}
.callout__title {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--saddle);
}

/* ---------------- 索引 / 标签 / 数据 ---------------- */
.index-list { list-style: none; margin: 0; padding: 0; border-top: var(--hair); }
.index-item {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 14px 10px;
  border-bottom: var(--hair);
  transition: background-color .16s var(--ease);
}
.index-item:hover { background: var(--sand); }
.index-num { font-family: var(--mono); font-size: 14px; letter-spacing: .1em; color: var(--gold); }
.index-name { font-size: 16.5px; font-weight: 500; color: var(--ink); }
.index-note { font-family: var(--mono); font-size: 12.5px; letter-spacing: .04em; color: var(--mist-deep); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 11px;
  border: var(--hair);
  border-radius: 999px;
  background: var(--cream);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist-deep);
}
.tag--gold { border-color: #DFC28A; background: #FBF2DE; color: #8A6320; }
.tag--mist { border-color: #BFD0DC; background: #EDF3F8; color: var(--mist-deep); }
.tag--grass { border-color: #BFD2C4; background: #EEF4EF; color: var(--grass); }

.data-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 1px;
  background: var(--track);
  border: var(--hair);
  border-radius: 14px;
  overflow: hidden;
}
.data-strip__cell { padding: 20px 18px; background: var(--cream); }
.data-strip__value { font-family: var(--serif); font-size: 27px; font-weight: 700; color: var(--saddle); line-height: 1.2; }
.data-strip__label { margin-top: 6px; font-family: var(--mono); font-size: 12px; letter-spacing: .14em; color: var(--mist-deep); }

/* 过滤 */
.filter-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.filter-input {
  min-width: 220px;
  padding: 10px 16px;
  border: var(--hair);
  border-radius: 999px;
  background: #FFFDF9;
  color: var(--ink);
  font-size: 15px;
}
.filter-count { font-family: var(--mono); font-size: 13px; letter-spacing: .08em; color: var(--mist-deep); }

/* 分段切换 */
.seg {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border: var(--hair);
  border-radius: 999px;
  background: var(--sand);
}
.seg__btn {
  appearance: none;
  padding: 8px 17px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--saddle);
  font-size: 14px;
  letter-spacing: .02em;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}
.seg__btn[aria-selected="true"] { background: var(--saddle); color: var(--cream); }
.seg-panel { margin-top: 22px; }
.seg-panel[hidden] { display: none; }

/* 折叠问答 */
.qa {
  padding: 0 20px;
  border: var(--hair);
  border-radius: 12px;
  background: #FFFDF9;
}
.qa + .qa { margin-top: 12px; }
.qa[open] { background: var(--cream); }
.qa__q {
  padding: 16px 0;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 16.5px;
  font-weight: 500;
  color: var(--saddle);
  list-style: none;
}
.qa__q::-webkit-details-marker { display: none; }
.qa__q::after { content: " +"; font-family: var(--mono); color: var(--gold); }
.qa[open] .qa__q::after { content: " –"; }
.qa__a { padding: 0 0 18px; color: #3B2C20; }

/* ---------------- 图片容器基础规则 ---------------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: var(--hair);
  border-radius: 14px;
  background-color: var(--sand);
  background-image: repeating-linear-gradient(135deg, #EFE7DA 0 14px, #E4D8C6 14px 28px);
}
.media-frame img,
.media-frame picture { display: block; width: 100%; height: 100%; object-fit: cover; }
.media-frame--hero { aspect-ratio: 21 / 9; }
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--rail { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-caption {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist-deep);
}

/* ---------------- 面包屑 ---------------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  padding: 20px 0 0;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--mist-deep);
}
.breadcrumbs a { color: var(--saddle); text-decoration: none; border-bottom: 1px solid transparent; }
.breadcrumbs a:hover { border-bottom-color: var(--gold); }
.breadcrumbs__sep { color: var(--track); }

/* ---------------- 复制按钮 ---------------- */
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 13px;
  border: 1px dashed #C9B79A;
  border-radius: 9px;
  background: transparent;
  color: var(--saddle);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .02em;
  cursor: pointer;
  transition: background-color .16s var(--ease), border-color .16s var(--ease), color .16s var(--ease);
}
.copy-btn:hover { background: var(--sand); }
.copy-btn__hint { font-size: 11px; letter-spacing: .16em; color: var(--mist-deep); }
.copy-btn[data-copied="true"] { border-style: solid; border-color: var(--grass); color: var(--grass); }
.copy-btn[data-copied="true"] .copy-btn__hint { color: var(--grass); }
.copy-btn--dark { border-color: rgba(200, 150, 62, .5); color: #F1E2CA; }
.copy-btn--dark .copy-btn__hint { color: #A08F7B; }
.copy-btn--dark:hover { background: rgba(200, 150, 62, .14); }
.copy-btn--dark[data-copied="true"] { border-color: #7FB08C; color: #A8D3B4; }

/* ---------------- 回到顶部 ---------------- */
.to-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 17px;
  border: 1px solid #D6C8B6;
  border-radius: 999px;
  background: rgba(246, 241, 232, .95);
  color: var(--saddle);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .16em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s var(--ease), visibility .2s var(--ease), transform .2s var(--ease);
}
.to-top[data-visible="true"] { opacity: 1; visibility: visible; }

/* ---------------- 显现 ---------------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .22s var(--ease), transform .22s var(--ease);
}
html.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------------- 页脚 ---------------- */
.site-footer {
  margin-top: 84px;
  padding: 58px 0 26px;
  border-top: 1px solid var(--gold);
  background-color: var(--saddle-deep);
  background-image: linear-gradient(180deg, rgba(240, 169, 59, .09), rgba(240, 169, 59, 0) 260px);
  color: #E9DFD2;
}
.footer-shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr);
  gap: 48px;
}
.footer-brand__name {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 700;
  color: #F4E8D6;
  letter-spacing: .01em;
}
.footer-brand__desc { margin: 0 0 22px; max-width: 36ch; font-size: 15px; line-height: 1.8; color: #C6B8A6; }
.footer-contact { display: grid; gap: 10px; justify-items: start; }
.footer-contact__label { font-family: var(--mono); font-size: 11.5px; letter-spacing: .22em; color: var(--gold); }
.footer-cols { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
.footer-col__title {
  margin: 0 0 14px;
  padding-bottom: 9px;
  border-bottom: 1px solid rgba(200, 150, 62, .3);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .2em;
  color: var(--gold);
}
.footer-list { list-style: none; display: grid; gap: 9px; }
.footer-list a {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  color: #E3D7C6;
  font-size: 14.5px;
  text-decoration: none;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}
.footer-list a:hover { color: var(--amber); border-bottom-color: rgba(240, 169, 59, .55); }
.footer-legal {
  max-width: var(--shell);
  margin: 46px auto 0;
  padding: 20px 20px 0;
  border-top: 1px solid rgba(200, 150, 62, .26);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  font-size: 13px;
  line-height: 1.7;
  color: #B6A794;
}
.footer-legal p { margin: 0; }
.footer-legal a { color: #DCCDBA; text-decoration: none; border-bottom: 1px solid transparent; }
.footer-legal a:hover { color: var(--amber); border-bottom-color: rgba(240, 169, 59, .5); }
.footer-legal__icp { font-family: var(--mono); letter-spacing: .06em; }
.footer-service {
  max-width: var(--shell);
  margin: 14px auto 0;
  padding: 0 20px;
  font-size: 12.5px;
  line-height: 1.75;
  color: #9C8D7B;
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
  .site-nav__link { padding: 8px 11px; font-size: 14.5px; }
  .brand__tagline { letter-spacing: .14em; }
}

@media (max-width: 980px) {
  .grid-rail { grid-template-columns: minmax(0, 1fr); }
  .rail { position: static; }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 132px; }
  .site-header { padding: 10px 12px 4px; }
  .header-shell { border-radius: 22px; padding: 10px 14px; gap: 10px; }
  .nav-toggle { display: inline-flex; margin-left: auto; order: 2; }
  .site-nav {
    order: 4;
    flex: 1 0 100%;
    display: none;
    padding: 8px;
    border: var(--hair);
    border-radius: 16px;
    background: var(--sand);
  }
  .site-nav[data-open] { display: block; }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 4px; }
  .site-nav__link {
    display: block;
    padding: 12px 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, .58);
  }
  .header-actions {
    order: 3;
    flex: 1 0 100%;
    justify-content: flex-start;
    padding-top: 10px;
    border-top: 1px dashed var(--track);
  }
  .brand__text { line-height: 1.1; }
  .footer-shell { grid-template-columns: minmax(0, 1fr); gap: 38px; }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; }
  :root { --pad-panel: 26px; }
  .panel-stack { gap: 34px; }
  .panel__head { flex-wrap: wrap; gap: 8px; }
  .index-item { grid-template-columns: 62px minmax(0, 1fr); row-gap: 4px; }
  .index-note { grid-column: 2; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .site-header { padding: 8px 10px 2px; }
  .header-shell { padding: 9px 12px; }
  .header-actions { flex-wrap: wrap; }
  .btn { padding: 8px 14px; font-size: 14px; }
  .footer-cols { grid-template-columns: minmax(0, 1fr); }
  .data-strip { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
  .breadcrumbs { padding-top: 14px; }
  .to-top { right: 12px; bottom: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  html.js [data-reveal] { opacity: 1; transform: none; }
  .btn:hover { transform: none; }
}