:root {
  color-scheme: light;
  --page: #faf9f7;
  --surface: #ffffff;
  --ink: #20201f;
  --muted: #73716d;
  --line: #e7e3dc;
  --soft: #f2f0ec;
  --gold: #7a5b24;
  --gold-bright: #c7a565;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--page);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { background: var(--page); scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--page); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: transparent; }
img { display: block; max-width: 100%; }
[hidden] { display: none !important; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid rgba(150, 119, 70, .55); outline-offset: 4px; }
.page-shell { width: min(100% - 40px, 960px); margin-inline: auto; }
.manual-header { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 18px; border-bottom: 1px solid var(--line); }
.manual-brand { display: inline-flex; align-items: center; gap: 8px; font-size: 20px; letter-spacing: -.45px; }
.manual-brand strong { font-weight: 680; }
.manual-brand span { color: #b2aca3; font-weight: 400; }
.header-link { min-height: 44px; display: inline-flex; align-items: center; color: #5e5b56; font-size: 14px; }
.breadcrumbs { min-height: 66px; display: flex; align-items: center; gap: 10px; overflow-x: auto; border-bottom: 1px solid var(--line); color: #86817a; font-size: 13px; white-space: nowrap; scrollbar-width: none; }
.breadcrumbs::-webkit-scrollbar { display: none; }
.breadcrumbs a { text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 4px; }
.breadcrumbs a:hover { text-decoration-color: currentColor; }
.breadcrumbs span[aria-hidden] { color: #b9b4ad; }
.eyebrow { margin: 0; color: var(--gold); font-size: 12px; font-weight: 760; letter-spacing: .15em; }
.catalog-hero { padding: clamp(54px, 9vw, 92px) 0 40px; }
.catalog-hero h1 { margin: 14px 0 0; font-size: clamp(44px, 8vw, 72px); line-height: 1; letter-spacing: -.055em; }
.catalog-hero > p:last-child { max-width: 620px; margin: 25px 0 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.manual-search { margin: 0 0 34px; }
.manual-search label { display: block; margin-bottom: 10px; color: #5d5953; font-size: 13px; font-weight: 650; }
.search-field { display: grid; grid-template-columns: minmax(0, 1fr) auto; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.manual-search input { width: 100%; min-height: 56px; padding: 0 18px; border: 0; background: transparent; color: var(--ink); font: inherit; font-size: 16px; -webkit-appearance: none; }
.manual-search input::placeholder { color: #aaa59d; }
.manual-search button { min-width: 76px; min-height: 48px; margin: 4px; padding: 0 16px; border: 0; border-radius: 10px; background: #292824; color: #fff; font: inherit; font-size: 14px; font-weight: 650; cursor: pointer; }
.detail-search { margin: 32px 0 0; }
.manual-list { padding-bottom: 72px; }
.list-heading { margin-bottom: 18px; display: flex; justify-content: space-between; align-items: end; gap: 18px; }
.list-heading h2 { margin: 0; font-size: 25px; letter-spacing: -.025em; }
.list-heading span { color: #8f8a83; font-size: 12px; }
.manual-list-card { display: grid; grid-template-columns: minmax(220px, .78fr) minmax(0, 1.22fr); min-height: 330px; overflow: hidden; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); box-shadow: 0 22px 60px rgba(39, 31, 21, .06); }
.manual-list-card > img { width: 100%; height: 100%; object-fit: cover; background: #eee8dd; }
.manual-list-copy { padding: clamp(28px, 6vw, 56px); display: flex; flex-direction: column; align-items: flex-start; justify-content: center; }
.manual-brandline { margin: 0; color: #837d74; font-size: 12px; font-weight: 650; letter-spacing: .05em; }
.manual-list-copy h3 { margin: 13px 0 0; font-size: clamp(27px, 4vw, 38px); letter-spacing: -.04em; }
.manual-list-copy > p:not(.manual-brandline) { margin: 10px 0 0; color: var(--muted); line-height: 1.6; }
.manual-list-copy dl { margin: 24px 0 0; display: flex; flex-wrap: wrap; gap: 8px 22px; color: #77726b; font-size: 13px; }
.manual-list-copy dl div { display: flex; gap: 7px; }
.manual-list-copy dt { font-weight: 650; color: #514d47; }
.manual-list-copy dd { margin: 0; }
.manual-list-action { min-height: 44px; margin-top: 30px; padding: 0 17px; display: inline-flex; align-items: center; gap: 12px; border: 1px solid #d7c6a5; border-radius: 999px; background: #fbf7ef; font-size: 14px; font-weight: 680; }
.manual-list-card:hover .manual-list-action { border-color: var(--gold-bright); }
.empty-state { margin: 0; padding: 54px 20px; border: 1px dashed #d9d4cc; border-radius: 18px; color: var(--muted); text-align: center; }
.manual-actions { padding: 36px 0 32px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.action-link { min-height: 50px; padding: 10px 18px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 12px; font-size: 15px; font-weight: 650; text-align: center; }
.action-secondary { background: var(--surface); }
.action-primary { border-color: #262521; background: #262521; color: #fff; }
.manual-document { overflow: hidden; border: 1px solid var(--line); border-radius: 24px; background: var(--surface); box-shadow: 0 24px 70px rgba(37, 30, 20, .06); }
.manual-summary { padding: clamp(32px, 7vw, 68px); }
.manual-summary h1 { margin: 16px 0 0; max-width: 760px; font-size: clamp(30px, 5.6vw, 49px); line-height: 1.2; letter-spacing: -.045em; }
.manual-meta { margin: 34px 0 0; display: grid; gap: 12px; }
.manual-meta div { display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 16px; font-size: 15px; line-height: 1.65; }
.manual-meta dt { font-weight: 690; color: #393733; }
.manual-meta dd { margin: 0; color: #706d67; overflow-wrap: anywhere; }
.download-note { margin: 30px 0 0; padding: 14px 16px; border-left: 3px solid var(--gold-bright); border-radius: 0 10px 10px 0; background: #faf6ee; color: #69635a; font-size: 13px; line-height: 1.7; }
.online-reader { border-top: 1px solid var(--line); background: #efeeeb; padding: clamp(22px, 4.5vw, 42px); }
.reader-heading { padding: 4px 4px 22px; }
.reader-heading h2 { margin: 9px 0 0; font-size: clamp(25px, 4.8vw, 38px); letter-spacing: -.035em; }
.manual-pages { display: grid; gap: 10px; }
.manual-pages picture, .manual-pages img { width: 100%; }
.manual-pages img { height: auto; background: #fff; }
.reader-placeholder { margin: 0; padding: 90px 24px; border: 1px dashed #cbc6bd; border-radius: 14px; background: #f8f7f5; color: #79756e; text-align: center; line-height: 1.7; }
.manual-footer { margin-top: 54px; padding: 28px 0 max(34px, env(safe-area-inset-bottom)); display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); color: #77736c; font-size: 12px; }
.manual-footer p { margin: 0; }
.manual-footer a { text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 640px) {
  .page-shell { width: min(100% - 32px, 960px); }
  .manual-header { min-height: 64px; }
  .manual-brand { font-size: 18px; gap: 6px; }
  .breadcrumbs { min-height: 58px; gap: 8px; }
  .catalog-hero { padding-top: 46px; }
  .manual-list-card { grid-template-columns: 1fr; }
  .manual-list-card > img { aspect-ratio: 1.35 / 1; }
  .manual-list-copy { padding: 28px 24px 30px; }
  .manual-actions { padding: 28px 0 24px; }
  .action-link { min-height: 48px; padding-inline: 12px; font-size: 14px; }
  .manual-document { border-radius: 18px; }
  .manual-summary { padding: 30px 24px 34px; }
  .manual-summary h1 { font-size: 28px; }
  .manual-meta { margin-top: 28px; }
  .manual-meta div { grid-template-columns: 78px minmax(0, 1fr); gap: 12px; font-size: 14px; }
  .online-reader { padding: 20px 8px 8px; }
  .reader-heading { padding: 3px 8px 18px; }
  .manual-pages { gap: 8px; }
  .manual-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}