@font-face{
  font-family:"Noto Sans SC";
  src:url("fonts/noto-sans-sc.woff2") format("woff2");
  font-weight:100 900;font-style:normal;font-display:swap;
}

:root{
  --paper:#ffffff;
  --paper-2:#f5f5f7;
  --ink:#1d1d1f;
  --ink-2:#424245;
  --muted:#6e6e73;
  --muted-2:#86868b;
  --line:rgba(0,0,0,.08);
  --line-2:rgba(0,0,0,.05);
  --accent:#0071e3;
  --mono:ui-monospace,SFMono-Regular,"SF Mono","JetBrains Mono",Menlo,Consolas,monospace;
  --sans:-apple-system,"SF Pro Text","PingFang SC","Noto Sans SC","Segoe UI Variable","Segoe UI","Microsoft YaHei",system-ui,sans-serif;
  --radius:18px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:15px;line-height:1.5;letter-spacing:-.005em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
input{font:inherit;color:inherit;background:none;border:0;outline:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

/* ---------- 顶部导航 ---------- */
.masthead{background:rgba(255,255,255,.86);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--line)}
.masthead-inner{
  max-width:1480px;margin:0 auto;padding:0 clamp(18px,4vw,44px);
  height:54px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.wordmark{display:flex;align-items:baseline;gap:9px;font-size:16px;font-weight:600;letter-spacing:-.01em}
.wordmark-en{font-size:9.5px;font-weight:500;letter-spacing:.12em;color:var(--muted-2)}
.masthead-meta{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.masthead-meta .sep{color:#c7c7cc}

/* ---------- 筛选 ---------- */
.filters{
  position:sticky;top:0;z-index:40;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--line);
}
.filters-inner{max-width:1480px;margin:0 auto;padding:0 clamp(18px,4vw,44px)}
.filters-top{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:12px 0 2px}
.filters-bottom{display:flex;flex-direction:column;align-items:stretch;gap:8px;padding:8px 0 14px}
.filter-group{display:flex;align-items:center;gap:12px;min-width:0;flex:0 1 auto}
.filter-group.grow{flex:1 1 auto;min-width:0}
.filters-bottom .filter-group{width:100%;align-items:flex-start}
.filters-bottom .filter-label{padding-top:4px}
.filter-label{
  flex:none;font-size:13px;font-weight:500;color:var(--muted);
  letter-spacing:0;white-space:nowrap;
}

/* 主题分段控件 */
.tabs{display:flex;gap:2px;padding:2px;border-radius:980px;background:var(--paper-2);min-width:0;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{
  flex:none;padding:6px 14px;border-radius:980px;white-space:nowrap;
  font-size:13.5px;font-weight:500;color:var(--ink-2);
  transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.tab:hover{color:var(--ink)}
.tab[aria-selected="true"]{
  background:#fff;color:var(--ink);
  box-shadow:0 1px 3px rgba(0,0,0,.12),0 0 0 .5px rgba(0,0,0,.04);
}
.tab .n{margin-left:5px;font-size:11px;font-weight:400;color:var(--muted-2);font-variant-numeric:tabular-nums}
.tab[aria-selected="true"] .n{color:var(--muted)}

/* 搜索 */
.search{
  display:flex;align-items:center;gap:8px;flex:none;
  width:clamp(190px,22vw,270px);height:36px;padding:0 13px;
  border-radius:980px;background:var(--paper-2);border:1px solid transparent;
  transition:background .2s,border-color .2s,box-shadow .2s;
}
.search:focus-within{background:#fff;border-color:rgba(0,113,227,.45);box-shadow:0 0 0 3px rgba(0,113,227,.15)}
.search svg{width:15px;height:15px;flex:none;fill:none;stroke:var(--muted);stroke-width:2;stroke-linecap:round}
.search input{flex:1;min-width:0;font-size:13.5px;letter-spacing:0;background:transparent}
.search input::placeholder{color:var(--muted-2)}
.search .clear{flex:none;width:18px;height:18px;border-radius:50%;background:#c7c7cc;color:#fff;font-size:12px;line-height:1;display:grid;place-items:center}

/* 统计 */
.topstats{flex:none;display:flex;align-items:baseline;gap:6px;font-size:12.5px;color:var(--muted);white-space:nowrap}
.topstats b{font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums}
.topstats i{font-style:normal;color:#c7c7cc}

/* 筛选胶囊 */
.chips{
  display:flex;gap:6px;flex:1 1 0%;min-width:0;
  overflow-x:auto;overflow-y:hidden;padding:1px 0 3px;
  scrollbar-width:thin;scrollbar-color:#d2d2d7 transparent;
}
.chips::-webkit-scrollbar{height:4px}
.chips::-webkit-scrollbar-thumb{background:#d2d2d7;border-radius:2px}
.chips-wrap{flex-wrap:wrap;overflow:visible;row-gap:6px;padding-bottom:0}
.chip{
  flex:none;display:inline-flex;align-items:center;gap:5px;
  padding:6px 13px;border-radius:980px;white-space:nowrap;
  background:var(--paper-2);color:var(--ink-2);font-size:13px;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.chip:hover{background:#e8e8ed;color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--ink);color:#fff}
.chip .n{font-size:10.5px;color:var(--muted-2);font-variant-numeric:tabular-nums}
.chip[aria-pressed="true"] .n{color:rgba(255,255,255,.6)}
.chips.angles .chip{font-size:12.5px;padding:5px 12px}

/* ---------- 列表 ---------- */
main{max-width:1480px;margin:0 auto;padding:0 clamp(18px,4vw,44px)}
.result-bar{padding:18px 0 12px;font-size:12.5px;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:clamp(14px,1.6vw,22px);padding-bottom:48px}
.card{
  position:relative;display:flex;flex-direction:column;cursor:pointer;
  background:#fff;border-radius:var(--radius);overflow:hidden;
  box-shadow:0 1px 2px rgba(0,0,0,.04),0 0 0 1px rgba(0,0,0,.05);
  transition:transform .32s var(--ease),box-shadow .32s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(0,0,0,.10),0 0 0 1px rgba(0,0,0,.04)}
.card:focus-visible{outline-offset:3px}
.thumb-wrap{position:relative;aspect-ratio:3/4;background:var(--paper-2);overflow:hidden}
.thumb-wrap img{width:100%;height:100%;object-fit:cover}
.card-body{padding:11px 13px 14px}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:3px;font-size:10.5px;color:var(--muted-2);letter-spacing:.02em}
.card-code{font-family:var(--mono);font-size:10px}
.card-cat{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.card-title{margin:0;font-size:13.5px;font-weight:500;line-height:1.45;letter-spacing:-.01em;color:var(--ink)}

/* 卡片内角度切换 */
.angle-strip{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  display:flex;justify-content:center;align-items:center;gap:3px;
  padding:16px 4px 5px;
  background:linear-gradient(to top,rgba(255,255,255,.97) 45%,rgba(255,255,255,0));
  opacity:0;transform:translateY(4px);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.card:hover .angle-strip,.card:focus-within .angle-strip{opacity:1;transform:none}
.angle-dot{
  font-size:10px;line-height:1;padding:4px 5px;letter-spacing:0;white-space:nowrap;
  border-radius:980px;color:var(--ink-2);background:rgba(0,0,0,.055);
  transition:background .15s,color .15s;
}
.angle-dot:hover{background:rgba(0,0,0,.11);color:var(--ink)}
.angle-dot.on{background:var(--ink);color:#fff}

/* 空状态 */
.empty{padding:90px 20px 110px;text-align:center;color:var(--muted)}
.empty p{margin:0 0 16px;font-size:15px}
.empty button{padding:8px 18px;border-radius:980px;background:var(--ink);color:#fff;font-size:13.5px;font-weight:500}
.empty button:hover{background:#000}

/* ---------- 页脚 ---------- */
.foot{margin-top:8px;background:var(--paper-2)}
.foot-inner{
  max-width:1480px;margin:0 auto;padding:24px clamp(18px,4vw,44px);
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:12px;color:var(--muted);
}
.foot-line{width:22px;height:1px;background:#d2d2d7}

/* ---------- 灯箱 ---------- */
.lightbox{
  position:fixed;inset:0;z-index:100;display:flex;flex-direction:column;
  height:100dvh;background:#000;color:#fff;
  opacity:0;transition:opacity .22s var(--ease);
  padding-top:env(safe-area-inset-top);
}
.lightbox[hidden]{display:none}
.lightbox.open{opacity:1}
.lb-top{
  flex:none;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:14px clamp(14px,2.4vw,24px) 8px;
}
.lb-title{min-width:0}
.lb-code{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:#86868b}
.lb-title h2{margin:3px 0 0;font-size:16px;font-weight:600;letter-spacing:-.01em;line-height:1.3}
.lb-cat{display:block;margin-top:3px;font-size:11.5px;color:#86868b}
.lb-actions{display:flex;align-items:center;gap:14px;flex:none}
.lb-count{font-size:11.5px;color:#86868b;font-variant-numeric:tabular-nums}
.lb-icon{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.12);color:#fff;transition:background .18s;
}
.lb-icon:hover{background:rgba(255,255,255,.22)}
.lb-icon svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}

.lb-stage{position:relative;flex:1;min-height:0;display:flex;align-items:center;justify-content:center;gap:10px;padding:4px clamp(10px,2vw,20px);overflow:hidden}
.lb-frame{
  margin:0;height:100%;max-width:100%;min-height:0;position:relative;
  display:flex;align-items:center;justify-content:center;
}
.lb-frame img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain}
.lb-loading{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none;opacity:0;transition:opacity .2s}
.lb-loading.on{opacity:1}
.lb-loading span{width:26px;height:26px;border-radius:50%;border:2px solid rgba(255,255,255,.2);border-top-color:#fff;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.lb-nav{
  flex:none;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.1);color:#fff;transition:background .18s,opacity .18s;
}
.lb-nav:hover{background:rgba(255,255,255,.2)}
.lb-nav svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

.lb-bottom{
  flex:none;display:flex;flex-direction:column;align-items:center;gap:8px;
  padding:10px 16px calc(14px + env(safe-area-inset-bottom));
}
.lb-bottom .chips{flex:none;overflow:visible}
.lb-bottom .chip{background:rgba(255,255,255,.12);color:#d2d2d7}
.lb-bottom .chip:hover{background:rgba(255,255,255,.2);color:#fff}
.lb-bottom .chip[aria-pressed="true"]{background:#fff;color:var(--ink)}
.lb-bottom .chip[data-empty="true"]{opacity:.28;cursor:not-allowed}
.lb-tip{margin:0;font-size:10.5px;color:#6e6e73;letter-spacing:.04em}
body.lb-open{overflow:hidden}

/* ---------- 响应式 ---------- */
@media(max-width:820px){
  .masthead-inner{height:50px}
  .filters{position:static}
  .filters-top{flex-direction:column;align-items:stretch;gap:10px;padding-top:10px}
  .filter-group{width:100%}
  .search{width:100%;order:3}
  .filters-bottom{gap:8px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
  .lb-nav{display:none}
}
@media(max-width:640px){
  .wordmark-en{display:none}
  .masthead-meta{display:none}
  .grid{grid-template-columns:repeat(2,1fr);gap:10px;padding-bottom:36px}
  .card-body{padding:9px 10px 11px}
  .card-title{font-size:12.5px}
  .card-meta{font-size:9.5px}
  .card-code{font-size:9px}
  .chips-wrap{row-gap:6px}
  .lb-top{padding:12px 14px 6px}
  .lb-title h2{font-size:15px}
  .lb-cat{display:none}
  .lb-bottom{padding:8px 10px calc(12px + env(safe-area-inset-bottom))}
  .lb-tip{display:none}
  .result-bar{padding:14px 0 10px}
}
@media(hover:none){
  .angle-strip{opacity:1;transform:none;padding-top:12px}
  .card:hover{transform:none}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}