/* Photo Retrieval Discovery Engine — design system */
:root{
  --bg:#f4f5fa; --card:#fff; --ink:#101828; --ink2:#3f4a5f; --muted:#667085; --faint:#9aa4b8;
  --line:#e7eaf2; --line2:#d9deea;
  --indigo:#4f46e5; --indigo2:#7c3aed; --indigo-soft:#eef0ff; --indigo-ring:rgba(79,70,229,.16);
  --ok:#067647; --ok-soft:#e7f5ee; --warn:#b54708; --warn-soft:#fdf0e3; --bad:#b42318; --bad-soft:#fdecea;
  --r:16px; --r-s:12px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 3px 12px rgba(16,24,40,.05);
  --shadow-lg:0 10px 32px rgba(16,24,40,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  color:var(--ink); font-size:15px; line-height:1.55; -webkit-font-smoothing:antialiased;
  background:
    radial-gradient(1100px 420px at 18% -140px, rgba(99,102,241,.14), transparent 60%),
    radial-gradient(900px 380px at 85% -160px, rgba(124,58,237,.10), transparent 60%),
    var(--bg);
}
a{color:var(--indigo)}

/* ---------- top bar ---------- */
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 28px;background:rgba(255,255,255,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.logo{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:19px;flex:none;
  background:linear-gradient(135deg,var(--indigo),var(--indigo2));box-shadow:0 4px 14px rgba(79,70,229,.35)}
.brand-name{font-weight:800;font-size:15.5px;letter-spacing:-.01em;white-space:nowrap}
.brand-sub{font-size:12px;color:var(--muted);white-space:nowrap}
.topbar-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.badge-static{font-size:11.5px;font-weight:600;color:var(--indigo);background:var(--indigo-soft);
  border:1px solid #dcdffe;border-radius:999px;padding:5px 11px;white-space:nowrap}
.nline{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}

/* ---------- hero ---------- */
.hero{max-width:1160px;margin:0 auto;padding:46px 28px 6px}
.hero h1{margin:0 0 12px;font-size:clamp(28px,4vw,40px);line-height:1.12;letter-spacing:-.025em;font-weight:800;max-width:840px}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--indigo),var(--indigo2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.lede{margin:0;max-width:740px;font-size:16.5px;color:var(--ink2)}
.lede b{font-weight:700;color:var(--ink)}

/* ---------- pipeline stepper ---------- */
.pipeline{list-style:none;display:flex;align-items:stretch;gap:8px;max-width:1160px;margin:28px auto 0;padding:0 28px}
.pipeline li{flex:1;min-width:150px;background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:14px 16px;box-shadow:var(--shadow)}
.pipeline li.p-arrow{display:grid;place-items:center;border:0;background:none;box-shadow:none;min-width:24px;flex:none;
  font-size:17px;color:var(--faint)}
.p-n{font-size:22px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.p-l{font-size:12.5px;font-weight:700;color:var(--ink2);margin-top:2px}
.p-s{font-size:11.5px;color:var(--muted);margin-top:3px;line-height:1.4}
.pipeline li.final{background:linear-gradient(135deg,var(--indigo),var(--indigo2));border-color:transparent}
.pipeline li.final .p-n,.pipeline li.final .p-l{color:#fff}
.pipeline li.final .p-s{color:rgba(255,255,255,.85)}

/* ---------- tabs ---------- */
.tabs{display:flex;gap:8px;max-width:1160px;margin:26px auto 0;padding:0 28px;flex-wrap:wrap}
.tab{appearance:none;border:1px solid var(--line2);background:var(--card);color:var(--ink2);
  font:600 14px "Inter",sans-serif;padding:10px 18px;border-radius:999px;cursor:pointer;box-shadow:var(--shadow);transition:all .15s}
.tab:hover{border-color:var(--indigo);color:var(--indigo)}
.tab.active{background:linear-gradient(135deg,var(--indigo),var(--indigo2));border-color:transparent;color:#fff;
  box-shadow:0 6px 18px rgba(79,70,229,.35)}

/* ---------- layout ---------- */
main{max-width:1160px;margin:0 auto;padding:22px 28px 30px}
section.tabpanel{display:none}
section.tabpanel.show{display:block;animation:fadein .25s ease}
@keyframes fadein{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);
  padding:22px 24px;margin-bottom:18px}
.card:last-child{margin-bottom:0}
.card h2{margin:0 0 4px;font-size:17px;font-weight:800;letter-spacing:-.01em}
.card .sub{margin:0 0 16px;font-size:13px;color:var(--muted)}
.card h3{margin:20px 0 8px;font-size:13.5px;font-weight:700;color:var(--ink2)}
.small{font-size:12px;color:var(--muted)}
.mut{color:var(--muted)}

/* ---------- presets / ask ---------- */
.preset-list{display:flex;flex-direction:column;gap:9px;margin-bottom:18px}
.preset-btn{display:flex;align-items:center;gap:12px;width:100%;text-align:left;font:500 13.5px/1.45 "Inter",sans-serif;
  color:var(--ink);background:#fbfcff;border:1px solid var(--line);border-radius:var(--r-s);padding:12px 14px;
  cursor:pointer;transition:all .14s}
.preset-btn:hover{border-color:var(--indigo);background:var(--indigo-soft);box-shadow:0 4px 14px var(--indigo-ring);transform:translateY(-1px)}
.pnum{flex:none;width:24px;height:24px;border-radius:8px;background:var(--indigo-soft);color:var(--indigo);
  font-weight:800;font-size:12px;display:grid;place-items:center}
.preset-btn:hover .pnum{background:var(--indigo);color:#fff}
.ptxt{flex:1}
.parrow{color:var(--faint);font-size:15px}
.preset-btn:hover .parrow{color:var(--indigo)}
.input{width:100%;font:400 14px "Inter",sans-serif;color:var(--ink);background:#fff;border:1px solid var(--line2);
  border-radius:var(--r-s);padding:11px 14px;outline:none;transition:border .14s,box-shadow .14s}
.input:focus{border-color:var(--indigo);box-shadow:0 0 0 3px var(--indigo-ring)}
.ask-row{display:flex;gap:10px;margin-top:14px}
.ask-row .input{flex:1}
.btn{appearance:none;font:700 14px "Inter",sans-serif;border:0;border-radius:var(--r-s);cursor:pointer;transition:all .15s}
.btn-primary{background:linear-gradient(135deg,var(--indigo),var(--indigo2));color:#fff;padding:12px 22px;
  box-shadow:0 6px 16px rgba(79,70,229,.3)}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-1px)}
.btn-ghost{background:#fff;border:1px solid var(--line2);color:var(--ink2);padding:9px 16px}
.btn-ghost:hover{border-color:var(--indigo);color:var(--indigo)}
.btn-ghost[disabled]{opacity:.45;cursor:default;transform:none}

/* ---------- answer ---------- */
.ans-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.ans-title{font-size:16px;font-weight:800;letter-spacing:-.01em;margin:0}
.meta-pill{font-size:11.5px;font-weight:600;color:var(--muted);background:#f2f4f9;border:1px solid var(--line);
  padding:4px 10px;border-radius:999px;white-space:nowrap}
.md p{margin:0 0 10px;font-size:14.5px}
.md ul{margin:0 0 10px;padding-left:20px;font-size:14px}
.md li{margin-bottom:6px}
.epref{color:var(--indigo);font-weight:700;font-size:12px;text-decoration:none;border:1px solid #dcdffe;
  background:var(--indigo-soft);border-radius:6px;padding:1px 5px;white-space:nowrap}
.epref:hover{background:var(--indigo);color:#fff;border-color:var(--indigo)}
details.tables{margin-top:8px}
details.tables summary{cursor:pointer;font-size:12.5px;font-weight:600;color:var(--muted)}
details.tables table{margin-top:8px}

/* ---------- evidence cards ---------- */
.evidence{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;margin-top:12px}
.evc{border:1px solid var(--line);border-left:3px solid var(--evc,var(--line2));border-radius:12px;padding:12px 14px;
  background:#fdfdff;transition:all .15s;scroll-margin-top:120px}
.evc:hover{box-shadow:var(--shadow)}
.evc.flash{box-shadow:0 0 0 3px var(--indigo-ring);border-color:var(--indigo)}
.ev-top{display:flex;align-items:center;gap:6px;flex-wrap:wrap;font-size:11.5px;color:var(--muted);margin-bottom:6px}
.ev-top b{color:var(--ink2);font-weight:700}
.ev-snip{font-size:13px;color:var(--ink2);display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.ev-quote{margin-top:7px;font-size:12.5px;font-style:italic;color:var(--indigo);border-top:1px dashed var(--line);padding-top:7px}
.sim{margin-left:auto;font-variant-numeric:tabular-nums;font-weight:700;color:var(--muted)}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;
  letter-spacing:.01em;white-space:nowrap;border:1px solid transparent}
.badge.gate{color:var(--gc);background:var(--gc-soft);border-color:var(--gc-line)}
.badge.dim{color:var(--faint);background:#f2f4f9;border-color:var(--line)}
.badge.src-play{color:#1d4ed8;background:#eff4ff;border-color:#d7e3ff}
.badge.src-appstore{color:#6d28d9;background:#f3efff;border-color:#e2d9ff}
.badge.src-reddit{color:#c2410c;background:#fff4ec;border-color:#ffe0cc}
.badge.out-found{color:var(--ok);background:var(--ok-soft);border-color:#bfe5d2}
.badge.out-partly_found{color:var(--warn);background:var(--warn-soft);border-color:#f5d5b8}
.badge.out-not_found{color:var(--bad);background:var(--bad-soft);border-color:#f5c6c0}
.badge.out-unknown{color:var(--muted);background:#f2f4f9;border-color:var(--line)}

/* ---------- bar charts ---------- */
.bars{display:flex;flex-direction:column;gap:9px}
.bar-row{display:grid;grid-template-columns:150px 1fr 158px;gap:12px;align-items:center}
.b-lbl{font-size:13px;font-weight:600;color:var(--ink2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.b-track{position:relative;height:14px;background:#eef1f7;border-radius:999px}
.b-fill{position:absolute;top:0;bottom:0;left:0;border-radius:999px;transition:width .45s ease}
.b-ci{position:absolute;top:4px;height:6px;background:var(--gc-line,rgba(79,70,229,.28));border-radius:3px}
.b-val{font-size:12.5px;color:var(--muted);text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.b-val b{color:var(--ink);font-weight:700}
.era-row{margin-bottom:16px}
.era-lbl{display:flex;justify-content:space-between;gap:10px;font-size:12.5px;font-weight:700;color:var(--ink2);margin-bottom:6px}
.era-lbl span{color:var(--muted);font-weight:600}
.stackbar{display:flex;height:16px;border-radius:999px;overflow:hidden;background:#eef1f7}
.stackbar i{height:100%;display:block}
.stackbar i:hover{filter:brightness(1.12)}
.legend{display:flex;gap:14px;flex-wrap:wrap;margin:2px 0 16px}
.legend span{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--ink2)}
.legend i{width:10px;height:10px;border-radius:3px;display:inline-block}

/* ---------- cue matrix ---------- */
.cue-head,.cue-row{display:grid;grid-template-columns:170px 1fr 1fr;gap:10px;align-items:center}
.cue-head{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--faint);
  padding-bottom:8px;border-bottom:1px solid var(--line)}
.cue-row{padding:7px 0;border-bottom:1px solid #f0f2f8}
.cue-row:last-child{border-bottom:0}
.cue-lbl{font-size:12.5px;font-weight:600;color:var(--ink2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cue-track{display:flex;align-items:center;gap:8px}
.ct{flex:1;height:9px;background:#eef1f7;border-radius:999px;overflow:hidden;position:relative}
.ct i{position:absolute;top:0;bottom:0;left:0;border-radius:999px}
.cv{font-size:11.5px;color:var(--muted);width:46px;text-align:right;font-variant-numeric:tabular-nums}

/* ---------- figures ---------- */
.figgrid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.fig{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;transition:all .15s;display:block;text-decoration:none}
.fig:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.fig img{width:100%;display:block;border-bottom:1px solid var(--line)}
.fig-cap{padding:10px 14px;font-size:12px;color:var(--muted)}
.fig-cap b{color:var(--ink2);font-weight:700;display:block;font-size:13px;margin-bottom:2px}

/* ---------- tables ---------- */
.tablewrap{overflow:auto;max-height:540px;border:1px solid var(--line);border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:13px}
thead th{position:sticky;top:0;background:#f7f8fc;color:var(--muted);font-size:11px;font-weight:700;
  text-transform:uppercase;letter-spacing:.06em;text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);z-index:2}
tbody td{padding:10px 12px;border-bottom:1px solid #f0f2f8;vertical-align:top}
tbody tr:hover{background:#f8f9fd}
tbody tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
.snipcell{max-width:430px}
.snipcell .q2{color:var(--indigo);font-style:italic;font-size:12px;margin-top:4px;display:block}
a.ext{color:var(--indigo);text-decoration:none;font-weight:600}
a.ext:hover{text-decoration:underline}
.rank{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:8px;font-weight:800;font-size:12px;
  background:#f2f4f9;color:var(--ink2)}
.rank.r1{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff}
.rank.r2{background:#e2e8f0;color:#334155}
.rank.r3{background:#fde3cf;color:#9a3412}
.pager{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;flex-wrap:wrap}
.plabel{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.pbtns{display:flex;gap:8px}
.filterrow{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 14px}
.filterrow .input{flex:1;min-width:180px}
.filterrow select.input{flex:0 0 160px;min-width:140px}

/* ---------- scorecard ---------- */
.slider-row{display:grid;grid-template-columns:180px 1fr 52px;align-items:center;gap:14px;margin-bottom:12px}
.slider-row label{font-size:13.5px;font-weight:600;color:var(--ink2)}
input[type=range]{width:100%;accent-color:var(--indigo);height:22px;cursor:pointer}
.sval{font-size:13px;font-weight:700;color:var(--indigo);text-align:right;font-variant-numeric:tabular-nums}
.toggle-row{display:flex;align-items:center;gap:9px;margin:14px 0;font-size:13.5px;color:var(--ink2)}
.toggle-row input{width:17px;height:17px;accent-color:var(--indigo)}
.lev-off td.levcol{opacity:.4}

/* ---------- try it ---------- */
#tryit{min-height:110px;resize:vertical}
.charcount{font-size:11.5px;color:var(--faint);text-align:right;margin-top:4px}
.pill-line{font-size:14.5px;margin:6px 0 10px}
.note{font-size:12px;color:var(--muted);margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}

/* ---------- footer ---------- */
.how{max-width:1160px;margin:6px auto 0;padding:0 28px}
.how-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:18px}
.how .card{margin-bottom:0}
.how h4{margin:0 0 10px;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.how ul{margin:0;padding-left:18px;font-size:13px;color:var(--ink2)}
.how li{margin-bottom:7px}
.val-row{display:flex;justify-content:space-between;gap:10px;font-size:13px;padding:6px 0;border-bottom:1px solid #f0f2f8}
.val-row:last-child{border-bottom:0}
.val-row b{font-variant-numeric:tabular-nums}
.foot{max-width:1160px;margin:18px auto 44px;padding:0 28px;font-size:12px;color:var(--faint)}

/* ---------- responsive ---------- */
@media (max-width:920px){
  .grid2{grid-template-columns:1fr}
  .figgrid{grid-template-columns:1fr}
  .how-grid{grid-template-columns:1fr}
  .pipeline{overflow-x:auto;padding-bottom:10px}
  .pipeline li{min-width:142px}
  .bar-row{grid-template-columns:112px 1fr 128px}
  .cue-head,.cue-row{grid-template-columns:110px 1fr 1fr}
  .topbar{flex-wrap:wrap}
  .brand-sub{display:none}
  .hero{padding-top:30px}
  .slider-row{grid-template-columns:1fr;gap:6px}
  .sval{text-align:left}
  .snipcell{max-width:260px}
}

/* ---------- discover more (live) ---------- */
.disc-srcs{display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;margin-top:10px}
.disc-srcs .toggle-row{margin:0}
.disc-nwrap{font-size:13px;color:var(--ink2);display:inline-flex;gap:7px;align-items:center}
.disc-nwrap .input{width:auto;padding:4px 10px;font-size:13px}
.disc-stats{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 4px}
.disc-stat{border:1px solid var(--line);border-radius:10px;padding:6px 12px;font-size:13px;display:flex;gap:8px;align-items:baseline;background:#fff;color:var(--ink2)}
.disc-stat b{font-size:15px;color:var(--ink)}
.disc-theme{padding:9px 0;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:8px;align-items:baseline}
.disc-theme .ev-quote{border-top:0;padding-top:0;width:100%;margin-top:2px}
.disc-doc{padding:10px 0;border-top:1px solid var(--line)}
.disc-doc:first-of-type{border-top:0}
.stars{color:#E69F00;letter-spacing:1px}