:root{
  --p-paper:oklch(0.985 0 0);
  --p-ink:oklch(0.145 0 0);
  --p-line:oklch(0.91 0 0);
  --p-muted:oklch(0.43 0 0);
  --surface:var(--p-paper);
  --surface-dark:var(--p-ink);
  --text:var(--p-ink);
  --text-muted:var(--p-muted);
  --line:var(--p-line);
  --component-button:var(--p-ink);
  --component-button-text:var(--p-paper);
  --font-sans:"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --font-mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{min-height:100dvh;background:var(--surface);color:var(--text);font-family:var(--font-sans);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
button,input{font:inherit}
button,a{touch-action:manipulation}
button{color:inherit;cursor:pointer}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--text);outline-offset:4px}
::selection{background:var(--text);color:var(--surface)}
.page-shell{width:min(100% - 40px,1380px);margin-inline:auto}
.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;z-index:20;top:8px;left:8px;padding:10px 16px;background:var(--text);color:var(--surface);transform:translateY(-150%)}
.skip-link:focus{transform:translateY(0)}
.edge-code{display:none}
.site-header{border-bottom:1px solid var(--text)}
.nav-wrap{width:min(100% - 32px,1440px);min-height:76px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;min-height:44px}
.brand-mark{font-size:22px;font-weight:700;letter-spacing:-.04em}
.brand-sub,.section-label,.kicker,.specimen-meta,.result-line span{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{display:flex;align-items:center;min-height:44px;padding:8px 12px;font-size:14px;transition:background-color 180ms ease-out,color 180ms ease-out}
.main-nav a:hover{background:var(--text);color:var(--surface)}
.hero{display:grid;gap:48px;padding-block:64px}
.hero-copy{display:flex;flex-direction:column;align-items:flex-start}
.kicker{margin-bottom:32px}
h1{font-size:clamp(44px,9vw,104px);font-weight:600;line-height:1.04;letter-spacing:-.065em;max-width:10ch}
.hero-intro{max-width:37rem;margin-top:32px;font-size:17px;line-height:1.8;color:var(--text-muted)}
.hero-action{display:flex;flex-direction:column;align-items:flex-start;gap:16px;margin-top:36px}
.primary-link{display:inline-flex;align-items:center;justify-content:space-between;gap:32px;min-height:52px;padding:12px 20px;background:var(--component-button);color:var(--component-button-text);border:1px solid var(--component-button);font-weight:600;transition:background-color 180ms ease-out,color 180ms ease-out}
.primary-link:hover{background:var(--surface);color:var(--text)}
.action-note{font-size:13px;color:var(--text-muted)}
.hero-specimen{border-top:1px solid var(--text);padding-top:12px;align-self:end}
.specimen-meta{display:flex;justify-content:space-between;gap:16px}
.hero-open{display:block;width:100%;border:0;background-color:transparent;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:24px 24px;margin-block:12px;padding:32px;cursor:zoom-in}
.hero-open img{width:min(100%,300px);margin:auto;transition:transform 180ms ease-out}
.hero-open:hover img{transform:scale(1.025)}
.hero-specimen figcaption{display:flex;justify-content:space-between;align-items:baseline;gap:16px;border-top:1px solid var(--line);padding-top:12px}
.hero-specimen figcaption strong{font-size:20px;letter-spacing:-.03em}
.hero-specimen figcaption span{font-size:13px;color:var(--text-muted)}
.stat-band{border-block:1px solid var(--text)}
.stat-grid{display:grid}
.stat-grid>div{display:flex;align-items:baseline;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.stat-grid strong{font-size:30px;line-height:1;letter-spacing:-.05em}
.stat-grid span{font-size:13px}
.stat-grid>p{padding:20px 0;font-size:14px;color:var(--text-muted)}
.catalog{display:grid;gap:40px;padding-block:80px}
.section-aside h2,.notes h2{font-size:36px;line-height:1.15;letter-spacing:-.045em;font-weight:600;margin-block:10px 16px}
.section-aside>p:last-child{max-width:25rem;color:var(--text-muted);font-size:15px}
.catalog-tools{display:grid;gap:16px;padding-bottom:24px}
.search-label input{width:100%;min-height:52px;border:0;border-bottom:1px solid var(--text);border-radius:0;background:transparent;color:var(--text);padding:10px 0;font-size:18px;outline:none}
.search-label input:focus{border-bottom-width:2px}
.search-label input::placeholder{color:var(--text-muted)}
.filters{display:flex;flex-wrap:wrap;gap:8px}
.filters button{min-height:44px;padding:8px 16px;border:1px solid var(--text);border-radius:0;background:transparent;font-size:14px;transition:background-color 180ms ease-out,color 180ms ease-out}
.filters button:hover,.filters button[aria-pressed="true"]{background:var(--text);color:var(--surface)}
.result-line{display:flex;justify-content:space-between;gap:16px;padding-block:12px;border-top:1px solid var(--text)}
.result-line p{font-size:13px;color:var(--text-muted)}
.specimen-grid{display:grid;grid-template-columns:1fr;column-gap:24px}
.specimen-card{min-width:0;border-top:1px solid var(--text);padding-block:16px 28px;display:flex;flex-direction:column}
.specimen-card[hidden]{display:none}
.specimen-open{position:relative;display:flex;align-items:center;justify-content:center;width:100%;aspect-ratio:4/3;border:0;background-color:transparent;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:24px 24px;cursor:zoom-in;overflow:hidden}
.specimen-open img{width:88%;height:76%;object-fit:contain;transition:transform 180ms ease-out}
.specimen-open:hover img{transform:scale(1.035)}
.zoom-label{position:absolute;right:8px;bottom:8px;background:var(--text);color:var(--surface);padding:3px 8px;font-size:11px;line-height:1.5;opacity:0;transition:opacity 180ms ease-out}
.specimen-open:hover .zoom-label,.specimen-open:focus-visible .zoom-label{opacity:1}
.specimen-heading{display:flex;justify-content:space-between;align-items:start;gap:12px;margin-top:20px}
.specimen-heading h3{font-size:25px;line-height:1.15;letter-spacing:-.035em;font-weight:600;overflow-wrap:anywhere}
.specimen-heading>span{font-family:var(--font-mono);font-size:11px;color:var(--text-muted);padding-top:4px}
.specimen-zh{font-size:14px;margin-top:5px;font-weight:600}
.specimen-description{font-size:14px;color:var(--text-muted);margin-top:12px;max-width:38ch;flex:1}
.specimen-footer{display:flex;justify-content:space-between;gap:12px;margin-top:20px;padding-top:12px;border-top:1px solid var(--line);font-size:12px}
.specimen-footer a{min-height:32px;display:inline-flex;align-items:center;text-decoration:underline;text-underline-offset:4px}
.specimen-footer a:hover{text-decoration-thickness:2px}
.specimen-footer span{color:var(--text-muted)}
.empty-state{border-top:1px solid var(--text);padding-block:56px}
.empty-state strong{font-size:28px}
.empty-state p{color:var(--text-muted);margin-block:8px 24px}
.empty-state button{min-height:44px;border:1px solid var(--text);background:transparent;padding:8px 16px}
.empty-state button:hover{background:var(--text);color:var(--surface)}
.selection-guide{background:var(--surface-dark);color:var(--surface);padding-block:80px}
.guide-layout{display:grid;gap:40px}
.selection-guide .section-aside>p:last-child{color:var(--p-line)}
.guide-list{border-top:1px solid var(--surface)}
.guide-row{display:grid;gap:6px;padding-block:24px;border-bottom:1px solid var(--p-muted)}
.guide-row>span{font-size:13px;color:var(--p-line)}
.guide-row strong{font-size:26px;line-height:1.2;letter-spacing:-.03em}
.guide-row p{font-size:14px;color:var(--p-line)}
.notes{padding-block:80px}
.notes-grid{display:grid;gap:24px;border-top:1px solid var(--text);padding-top:24px}
.notes-grid p{max-width:65ch;color:var(--text-muted)}
.site-footer{border-top:1px solid var(--text)}
.footer-inner{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px}
.footer-inner a{display:flex;align-items:center;min-height:44px;text-decoration:underline;text-underline-offset:4px}
.detail-dialog{width:min(100% - 32px,1080px);max-height:calc(100dvh - 32px);border:1px solid var(--text);border-radius:0;background:var(--surface);color:var(--text);padding:0;overflow:auto}
.detail-dialog::backdrop{background:oklch(0.145 0 0 / .72)}
.dialog-close{position:sticky;z-index:2;top:0;float:right;min-height:44px;padding:8px 16px;border:0;border-bottom:1px solid var(--text);border-left:1px solid var(--text);background:var(--surface);font-size:13px}
.dialog-close:hover{background:var(--text);color:var(--surface)}
.dialog-layout{display:grid;clear:both}
.dialog-image-wrap{display:flex;align-items:center;justify-content:center;min-height:300px;padding:32px;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:24px 24px;border-bottom:1px solid var(--text)}
.dialog-image-wrap img{width:100%;max-height:420px;object-fit:contain}
.dialog-copy{padding:32px}
.dialog-copy h2{font-size:38px;line-height:1.1;letter-spacing:-.045em;margin-top:8px;overflow-wrap:anywhere}
.dialog-zh{font-weight:600;margin-top:6px}
.dialog-description{color:var(--text-muted);margin-top:20px;max-width:65ch}
.detail-list{margin-top:28px;border-top:1px solid var(--text)}
.detail-list>div{display:grid;grid-template-columns:88px 1fr;gap:16px;padding-block:14px;border-bottom:1px solid var(--line);font-size:14px}
.detail-list dt{font-weight:600}
.detail-list dd{color:var(--text-muted)}
.download-link{display:inline-flex;align-items:center;min-height:48px;margin-top:28px;padding:10px 16px;background:var(--text);color:var(--surface);border:1px solid var(--text);font-weight:600}
.download-link:hover{background:var(--surface);color:var(--text)}
@media (min-width:600px){
  .page-shell{width:min(100% - 64px,1380px)}
  .hero-action{flex-direction:row;align-items:center;gap:24px}
  .stat-grid{grid-template-columns:repeat(3,1fr)}
  .stat-grid>div{padding:24px 16px;border-bottom:0;border-right:1px solid var(--line)}
  .stat-grid>div:first-child{padding-left:0}
  .stat-grid>p{grid-column:1/-1;border-top:1px solid var(--line);padding-block:14px}
  .specimen-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .guide-row{grid-template-columns:1fr 1fr;align-items:baseline;column-gap:24px}
  .guide-row p{grid-column:2}
  .notes-grid{grid-template-columns:1fr 1fr;gap:48px}
}
@media (min-width:900px){
  .edge-code{display:block;position:fixed;z-index:1;right:8px;top:30%;width:12px;height:180px;color:var(--text);pointer-events:none}
  .hero{grid-template-columns:repeat(12,minmax(0,1fr));min-height:690px;align-items:center;padding-block:88px}
  .hero-copy{grid-column:1/9}
  .hero-specimen{grid-column:10/13}
  .catalog-tools{grid-template-columns:minmax(180px,1fr) auto;align-items:end}
  .catalog,.guide-layout{grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;padding-block:112px}
  .section-aside{grid-column:1/4}
  .catalog-main,.guide-list{grid-column:4/13}
  .selection-guide{padding-block:0}
  .guide-row{grid-template-columns:1.1fr 1fr 1.2fr;padding-block:26px}
  .guide-row p{grid-column:auto}
  .dialog-layout{grid-template-columns:1.15fr 1fr;min-height:580px}
  .dialog-image-wrap{border-bottom:0;border-right:1px solid var(--text);padding:48px}
  .dialog-copy{padding:48px 40px}
}
@media (min-width:1120px){.specimen-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.stat-grid{grid-template-columns:repeat(3,1fr) 1.6fr;align-items:center}.stat-grid>p{grid-column:auto;border-top:0;border-left:1px solid var(--line);padding:24px}.notes{padding-block:112px}}
@media (max-width:599px){
  .brand-sub{display:none}
  .nav-wrap{gap:8px}
  .main-nav{gap:0}
  .main-nav a{font-size:12px;padding-inline:8px}
  .hero{padding-block:48px}
  .hero-intro{font-size:16px}
  .catalog,.selection-guide,.notes{padding-block:64px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

.source-note{margin-top:24px;font-size:13px;color:var(--text-muted)}
.source-note a{text-decoration:underline;text-underline-offset:3px}
@media(max-width:599px){.main-nav a{padding-inline:6px}}

.catalog--compact{display:block;padding-block:28px 20px}
.catalog-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}
.catalog-heading h1{font-size:28px;line-height:1.3;letter-spacing:-.03em;max-width:none}
.catalog-heading p{margin-top:6px;font-size:14px;color:var(--text-muted)}
.catalog-heading>a{flex:none;font-size:14px;text-decoration:underline;text-underline-offset:4px}
.catalog--compact .specimen-open{aspect-ratio:2/1}
.sample-notes{margin-bottom:28px;font-size:13px;color:var(--text-muted)}
.sample-notes summary{cursor:pointer;min-height:32px}
.sample-notes p{margin-top:8px}
.sample-notes a{text-decoration:underline}
.sample-payload{margin-top:8px;font:12px var(--font-mono);color:var(--text-muted)}
.detail-dialog{margin:auto}
@media(max-width:599px){.catalog-heading{align-items:flex-start;gap:12px}.catalog-heading h1{font-size:24px}.catalog-heading>a{font-size:12px}.catalog-heading p{font-size:12px}.catalog--compact{padding-top:20px}}