:root{
  --bg:#ffffff;
  --bg-soft:#fafafa;
  --bg-cmd:#0c0d12;
  --text:#0c1014;
  --muted:#6b7280;
  --faint:#9aa0ac;
  --border:#eceef1;
  --border2:#e2e5ea;
  --accent:#0c1014;
  --blue:#2563eb;
  --good:#16a34a;
  --bad:#dc2626;
  --radius:12px;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
a{color:inherit;text-decoration:none}
code{font-family:var(--mono);background:var(--bg-soft);border:1px solid var(--border);padding:.08em .4em;border-radius:6px;font-size:.9em}
.muted{color:var(--muted)}
.mute{color:var(--muted)}
.sm{font-size:12.5px}

/* nav */
.nav{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 28px;background:rgba(255,255,255,.85);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--border);
}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:19px;letter-spacing:-.02em}
.mark{font-size:22px;color:var(--accent)}
.mark.sm{font-size:18px}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{color:var(--muted);font-size:14.5px;font-weight:500}
.nav-links a:hover{color:var(--text)}
.nav-links .btn{margin-left:4px}

/* buttons */
.btn{
  border:1px solid var(--border2);background:var(--bg);color:var(--text);
  padding:8px 16px;border-radius:9px;font-size:14px;font-weight:600;cursor:pointer;
  transition:.12s;font-family:var(--sans);
}
.btn:hover{border-color:#c8ccd3}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:#222}
.btn.ghost{background:transparent}
.btn.sm{padding:7px 13px;font-size:13.5px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.link-btn{background:none;border:none;color:var(--muted);font-size:13px;cursor:pointer;padding:6px 4px}
.link-btn:hover{color:var(--text)}
.x{background:none;border:none;font-size:18px;color:var(--muted);cursor:pointer;padding:4px 8px;border-radius:8px}
.x:hover{background:var(--bg-soft);color:var(--text)}

main{max-width:1040px;margin:0 auto;padding:0 24px 96px}

/* hero */
.hero{padding:96px 0 64px;text-align:center}
.hero h1{font-size:46px;line-height:1.06;letter-spacing:-.03em;margin:0 0 20px;font-weight:700}
.hero .lede{max-width:560px;margin:0 auto 30px;font-size:17px;line-height:1.55;color:var(--muted)}
.cmd{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--bg-cmd);color:#e6e8f2;border-radius:11px;
  padding:13px 18px;font-family:var(--mono);font-size:14.5px;
  box-shadow:0 8px 30px rgba(12,16,20,.12);
}
.cmd .prompt{color:#6b7280}
.cmd .cmd-text{font-weight:600}
.cmd .cmd-hint{color:#8b90ad;font-size:13px;border-left:1px solid #2a2f3a;padding-left:12px;margin-left:4px}
@media(max-width:560px){.cmd-hint{display:none}.hero h1{font-size:34px}}

/* library */
.lib{padding-top:10px}
.lib-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:18px}
.lib-head h2{font-size:22px;letter-spacing:-.02em;margin:0;font-weight:600}
.count{font-size:13.5px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:860px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.grid{grid-template-columns:1fr}}

.card{
  border:1px solid var(--border);border-radius:var(--radius);
  background:var(--bg);padding:18px;cursor:pointer;transition:.12s;
  display:flex;flex-direction:column;gap:10px;min-height:148px;
}
.card:hover{border-color:#c8ccd3;box-shadow:0 4px 18px rgba(12,16,20,.06);transform:translateY(-1px)}
.card .c-name{font-size:16px;font-weight:600;font-family:var(--mono);word-break:break-all;line-height:1.2}
.card .c-desc{font-size:13px;color:var(--muted);line-height:1.45;flex:1}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{
  font-size:11px;font-family:var(--mono);color:var(--muted);
  background:var(--bg-soft);border:1px solid var(--border);
  padding:2px 8px;border-radius:99px;
}
.tag.solid{background:var(--accent);color:#fff;border-color:var(--accent)}
.card .c-foot{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--faint);border-top:1px dashed var(--border);padding-top:9px;margin-top:2px}
.c-run{color:var(--text);font-weight:600;display:flex;align-items:center;gap:4px}

/* upload card */
.card.upload{
  border-style:dashed;align-items:center;justify-content:center;text-align:center;color:var(--muted);
  background:var(--bg-soft);
}
.card.upload:hover{color:var(--text)}
.card.upload .up-icon{font-size:24px}
.card.upload .up-text{font-size:14px;font-weight:500}

/* panel (slide-over) */
.scrim{position:fixed;inset:0;background:rgba(12,16,20,.32);opacity:0;pointer-events:none;transition:.18s;z-index:40}
.scrim.open{opacity:1;pointer-events:auto}
.panel{
  position:fixed;top:0;right:0;height:100%;width:440px;max-width:100%;
  background:var(--bg);border-left:1px solid var(--border);
  display:flex;flex-direction:column;z-index:50;
  transform:translateX(100%);transition:transform .22s cubic-bezier(.2,.8,.2,1);
  box-shadow:-10px 0 40px rgba(12,16,20,.1);
}
.panel.open{transform:translateX(0)}
@media(max-width:480px){.panel{width:100%}}
.panel-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid var(--border)}
.panel-title{display:flex;align-items:center;gap:11px}
.panel-title h3{margin:0;font-size:15px;font-family:var(--mono);word-break:break-all;line-height:1.2}
.panel-body{flex:1;display:flex;flex-direction:column;overflow:hidden}
.chat{flex:1;overflow-y:auto;padding:18px;font-family:var(--mono);font-size:14px;line-height:1.6;white-space:pre-wrap;word-break:break-word}
.chat-empty{text-align:center;font-family:var(--sans);margin-top:48px}
.msg{margin-bottom:16px}
.msg .who{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--faint);margin-bottom:5px;font-family:var(--sans)}
.msg.user .body{background:var(--bg-soft);border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-family:var(--sans);font-size:14px}
.msg.ai .body{color:var(--text)}
.cursor{display:inline-block;width:7px;height:15px;background:var(--accent);vertical-align:text-bottom;animation:blink 1s steps(1) infinite;margin-left:1px}
@keyframes blink{50%{opacity:0}}
.composer{border-top:1px solid var(--border);padding:14px;background:var(--bg-soft)}
.composer textarea{width:100%;resize:none;border:1px solid var(--border2);border-radius:10px;padding:11px 12px;font-family:var(--sans);font-size:14px;background:#fff}
.composer textarea:focus{outline:none;border-color:#b9bdc5}
.composer-row{display:flex;align-items:center;gap:10px;margin-top:9px}
.params{margin-top:12px;border-top:1px dashed var(--border);padding-top:12px}
.p-row{display:grid;grid-template-columns:90px 1fr 34px;align-items:center;gap:10px;margin-bottom:8px;font-size:13px}
.p-row label{color:var(--muted)}
.p-row .pv{font-family:var(--mono);text-align:right;font-size:12.5px}
input[type=range]{width:100%;accent-color:var(--accent)}
.params.hidden{display:none}

/* modal (model info) */
.modal{position:fixed;inset:0;z-index:60;display:flex;align-items:center;justify-content:center;background:rgba(12,16,20,.4);opacity:0;pointer-events:none;transition:.16s;padding:20px}
.modal.open{opacity:1;pointer-events:auto}
.modal-card{background:var(--bg);border:1px solid var(--border);border-radius:14px;max-width:620px;width:100%;max-height:80vh;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:16px 18px;border-bottom:1px solid var(--border)}
.modal-head h3{margin:0;font-family:var(--mono);font-size:15px;word-break:break-all}
.modal-body{overflow-y:auto;padding:18px}
.m-section{margin-bottom:20px}
.m-section h4{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--faint);margin:0 0 8px;font-weight:600}
.m-table{width:100%;border-collapse:collapse;font-size:13px}
.m-table td{padding:6px 8px;border-bottom:1px solid var(--border);vertical-align:top}
.m-table td:first-child{color:var(--muted);font-family:var(--mono);width:42%}
.m-table td:last-child{font-family:var(--mono);word-break:break-all}
.m-table tr:last-child td{border-bottom:none}
.t-list{font-family:var(--mono);font-size:11.5px;max-height:200px;overflow:auto;border:1px solid var(--border);border-radius:8px}
.t-row{display:grid;grid-template-columns:1fr auto auto;gap:10px;padding:5px 9px;border-bottom:1px solid var(--border)}
.t-row:last-child{border-bottom:none}
.t-row .tn{word-break:break-all}.t-row .ts{color:var(--muted)}.t-row .tb{color:var(--blue)}

/* drop overlay */
.drop-overlay{position:fixed;inset:0;z-index:70;background:rgba(12,16,20,.5);display:none;align-items:center;justify-content:center;pointer-events:none}
.drop-overlay.show{display:flex}
.drop-inner{border:2px dashed #fff;border-radius:16px;padding:46px 60px;color:#fff;text-align:center;background:rgba(0,0,0,.25)}
.drop-inner .big{font-size:46px;display:block;margin-bottom:10px}

/* toast */
.toast{
  position:fixed;bottom:22px;left:50%;transform:translateX(-50%) translateY(20px);
  background:#0c1014;color:#fff;padding:12px 18px;border-radius:10px;font-size:14px;
  box-shadow:0 12px 40px rgba(0,0,0,.25);z-index:80;opacity:0;pointer-events:none;transition:.18s;max-width:90vw;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.err{background:#b91c1c}.toast.warn{background:#b45309}

/* footer */
.foot{max-width:1040px;margin:0 auto;padding:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--muted);border-top:1px solid var(--border)}
.foot a:hover{text-decoration:underline}

/* nav search + user */
.nav-search{flex:1;max-width:340px;margin:0 24px}
.nav-search input{width:100%;border:1px solid var(--border2);border-radius:99px;padding:8px 16px;font-size:14px;background:var(--bg-soft)}
.nav-search input:focus{outline:none;border-color:#c8ccd3;background:#fff}
.nav-user{font-size:14px;display:flex;align-items:center;gap:8px}
.userchip{font-family:var(--mono);font-size:13px;color:var(--muted)}
.nav-user .logout{color:var(--muted);font-size:13px}
.nav-user .logout:hover{color:var(--text)}
#signin{color:var(--muted);font-size:14.5px;font-weight:500}

/* card variants */
.card.upload{border-style:dashed;align-items:center;justify-content:center;text-align:center;color:var(--muted);background:var(--bg-soft)}
.card.upload:hover{color:var(--text)}
.card.upload .up-icon{font-size:24px}
.card.upload .up-text{font-size:14px;font-weight:500}
.card.upload .up-sub{display:block;margin-top:2px}
.card.plain{cursor:default}
.card.plain:hover{border-color:var(--border);box-shadow:none;transform:none}
.card a{color:inherit}

/* hero (library) */
.hero{padding:64px 0 40px;text-align:center}
.hero h1{font-size:40px;line-height:1.08;letter-spacing:-.03em;margin:0 0 16px;font-weight:700}
.hero .lede{max-width:540px;margin:0 auto;font-size:16px;line-height:1.55;color:var(--muted)}

/* auth + upload forms */
.modal-card.sm{max-width:360px}
form label{display:block;font-size:13px;color:var(--text);font-weight:600;margin-bottom:12px}
form input,form textarea{display:block;width:100%;margin-top:6px;border:1px solid var(--border2);border-radius:9px;padding:10px 12px;font-family:var(--sans);font-size:14px;background:#fff}
form textarea{resize:vertical}
form input:focus,form textarea:focus{outline:none;border-color:#b9bdc5}
form .btn{width:100%;margin-top:6px}
.err{color:var(--bad);font-size:13px;min-height:18px;margin:6px 0}
.switch{margin:14px 0 0;text-align:center}
.switch a{color:var(--blue)}
.up-drop{border:1.5px dashed var(--border2);border-radius:9px;padding:18px;text-align:center;color:var(--muted);background:var(--bg-soft);cursor:pointer;margin-top:6px;font-size:13.5px}
.up-drop:hover{color:var(--text);border-color:#c8ccd3}

/* model page */
.mp{max-width:760px;margin:0 auto;padding:24px 0}
.mp-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap}
.mp-head h1{margin:0;font-size:30px;letter-spacing:-.02em;font-weight:700}
.mp-sub{margin:6px 0 0;font-size:13.5px}
.mp-sub code{font-size:12.5px}
.mp-actions{display:flex;gap:10px}
.mp-desc{font-size:15.5px;line-height:1.55;margin:18px 0;color:#333}
.mp-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}
@media(max-width:700px){.mp-grid{grid-template-columns:1fr}}
.mp .card h4{margin:0 0 10px;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--faint);font-weight:600}
.mp .m-table{width:100%;border-collapse:collapse;font-size:13px}
.mp .m-table td{padding:6px 8px;border-bottom:1px solid var(--border);vertical-align:top;font-family:var(--mono)}
.mp .m-table td:first-child{color:var(--muted);width:42%}
.mp .m-table tr:last-child td{border-bottom:none}
.t-list{font-family:var(--mono);font-size:11.5px;max-height:260px;overflow:auto;border:1px solid var(--border);border-radius:8px}
.t-row{display:grid;grid-template-columns:1fr auto auto;gap:10px;padding:5px 9px;border-bottom:1px solid var(--border)}
.t-row:last-child{border-bottom:none}
.t-row .tn{word-break:break-all}.t-row .ts{color:var(--muted)}.t-row .tb{color:var(--blue)}

/* run panel pull stat */
.pullstat{padding:8px 18px;border-bottom:1px solid var(--border)}