:root { color-scheme: light; --ink: #405060; --muted: #536575; --paper: #f0f3f5; --base: #e6ebef; --card: #fafbfc; --line: rgb(64 80 96 / 16%); }
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--paper); font: 15px/1.8 "PingFang SC", "Microsoft YaHei", Arial, sans-serif; }
a { color: inherit; text-underline-offset: 4px; }
button, input, select { font: inherit; color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }
[hidden] { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link { position: fixed; z-index: 20; top: -100px; left: 20px; padding: 8px 16px; background: white; }
.skip-link:focus { top: 8px; }
.site-header { border-bottom: 1px solid var(--line); }
.navigation { display: flex; align-items: center; gap: 28px; min-height: 64px; padding: 12px 32px; font-size: 13px; }
.navigation a { text-decoration: none; }
.navigation a:hover { text-decoration: underline; }
.brand { display: flex; align-items: center; margin-right: 4px; }
.brand img { display: block; }
.nav-current { font-weight: 600; }
.nav-home { margin-left: auto; color: var(--muted); }
.container { width: min(100%, 1200px); margin: 0 auto; padding: 0 32px; }
main.container { padding-top: 64px; padding-bottom: 56px; }
main:focus { outline: none; }
.intro { margin-bottom: 40px; }
.eyebrow { margin: 0 0 16px; font-size: 12px; letter-spacing: .12em; color: var(--muted); }
h1 { margin: 0; font-size: clamp(28px, 3.8vw, 44px); line-height: 1.45; font-weight: 600; letter-spacing: .025em; }
.lead { margin: 22px 0 0; color: var(--muted); font-size: 16px; line-height: 1.95; }
.filters { display: grid; grid-template-columns: minmax(220px, 2fr) repeat(3, minmax(130px, 1fr)); gap: 16px; padding: 24px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.filters label { display: block; margin-bottom: 7px; font-size: 12px; color: var(--muted); }
.filters input, .filters select { width: 100%; height: 42px; padding: 8px 12px; background: var(--card); border: 1px solid var(--line); border-radius: 3px; font-size: 14px; }
.collection-count { margin: 22px 0; font-size: 13px; color: var(--muted); }
.site-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.site-card { position: relative; display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--line); border-radius: 4px; background: var(--card); transition: border-color 180ms ease; }
.site-card:hover, .site-card:focus-within { border-color: var(--ink); }
.thumbnail { display: flex; align-items: center; justify-content: center; width: 100%; aspect-ratio: 16 / 10; background: var(--base); overflow: hidden; }
.thumbnail img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumbnail-placeholder { color: var(--muted); font-size: 12px; letter-spacing: .04em; }
.card-content { display: flex; flex-direction: column; flex: 1; padding: 20px; }
.site-card h3 { margin: 0 0 3px; font-size: 18px; line-height: 1.6; font-weight: 600; overflow-wrap: anywhere; }
.detail-link { text-decoration: none; }
.detail-link::after { position: absolute; inset: 0; content: ""; }
.domain { color: var(--muted); font-size: 12px; overflow-wrap: anywhere; }
.card-description { margin: 14px 0 18px; color: var(--muted); font-size: 14px; line-height: 1.85; }
.card-bottom { margin-top: auto; }
.snapshot-status { display: block; margin: 18px 0 12px; color: var(--muted); font-size: 12px; }
.snapshot-status.available { color: var(--ink); }
.card-actions { display: flex; gap: 20px; border-top: 1px solid var(--line); padding-top: 12px; font-size: 13px; }
.card-actions a { position: relative; z-index: 1; }
.empty-state { padding: 52px 24px 60px; text-align: center; border: 1px solid var(--line); background: var(--card); }
.empty-symbol { display: block; margin-bottom: 14px; font: 20px/1.6 monospace; color: var(--muted); }
.empty-state h2 { margin: 0 0 10px; font-size: 19px; font-weight: 500; }
.empty-state p { margin: 0; color: var(--muted); font-size: 14px; }
.text-button { margin-top: 18px; padding: 5px 8px; border: 0; background: transparent; text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }
.collection-note { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.collection-note p { margin: 0 0 4px; }
.site-footer { background: var(--base); border-top: 1px solid var(--line); font-size: 13px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-top: 26px; padding-bottom: 26px; }
.footer-inner a { text-decoration: none; }
.footer-inner span, .footer-inner p { color: var(--muted); }
.footer-inner p { margin: 0; }
.notice { padding: 18px 20px; border-left: 2px solid var(--ink); background: var(--base); font-size: 14px; }
.detail-container { max-width: 1000px; }
.back-link { display: inline-block; margin-bottom: 30px; color: var(--muted); font-size: 13px; }
.detail-header { margin-bottom: 26px; }
.detail-url { display: inline-block; margin-top: 12px; color: var(--muted); overflow-wrap: anywhere; }
.detail-image { max-width: 800px; border: 1px solid var(--line); margin: 26px 0 32px; }
.detail-copy { max-width: 760px; font-size: 16px; line-height: 1.95; }
.detail-meta { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 12px 24px; padding: 24px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 14px; }
.detail-meta dt { color: var(--muted); }
.detail-meta dd { margin: 0; overflow-wrap: anywhere; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 40px; }
.button-link { display: inline-block; padding: 8px 18px; border: 1px solid var(--ink); border-radius: 3px; text-decoration: none; font-size: 14px; }
.button-link.primary { background: var(--ink); color: white; }
.versions { margin-top: 32px; }
.versions h2 { font-size: 20px; font-weight: 500; }
.versions ul { padding-left: 20px; }
.versions li { padding: 8px 0; }
.directory-list { padding-left: 20px; }
.directory-list li { padding: 8px 0; }
@media (max-width: 960px) { .site-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .filters { grid-template-columns: repeat(3, minmax(0, 1fr)); } .search-control { grid-column: 1 / -1; } }
@media (max-width: 600px) { .navigation { gap: 20px; padding: 12px 20px; } .nav-home { font-size: 12px; } .container { padding-left: 24px; padding-right: 24px; } main.container { padding-top: 40px; padding-bottom: 40px; } .desktop-break { display: none; } .lead { font-size: 15px; } .intro { margin-bottom: 28px; } .site-grid { grid-template-columns: minmax(0, 1fr); gap: 20px; } .filters { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; } .search-control { grid-column: 1 / -1; } .filter-control:last-child { grid-column: 1 / -1; } .footer-inner { flex-direction: column; align-items: flex-start; gap: 10px; } .detail-meta { grid-template-columns: 88px minmax(0, 1fr); gap: 12px; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }