/* Product Lab kit v2: shared look for every test app. Accent colours come from each app (set inline by K.app). */
:root{
  --accent:#3B5BDB;--accent-ink:var(--accent-ink-l,#2C46B0);--accent-bg-l:#EDF1FD;
  --accent-bg:var(--accent-bg-l);--accent-soft:color-mix(in srgb,var(--accent) 9%,var(--card));
  --bg:#F5F6F9;--bg2:#EEF0F5;--card:#FFFFFF;--sunk:#EEF0F4;--line:#E3E6ED;--line2:#CAD0DC;
  --text:#141826;--muted:#4D5468;--good:#16774F;--good-bg:#E3F4EC;--good-ink:#0D4A33;--bad:#A63A26;--bad-bg:#FCEDE9;--bad-ink:#7A2E1F;
  --warn-bg:#FFF4DB;--warn-ink:#5C3D00;--warn-text:#8F6300;--ai:#5B21B6;--ai-bg:#F3EBFF;
  --shadow:0 1px 2px rgba(16,24,40,.05),0 4px 14px rgba(16,24,40,.06);--shadow-lg:0 10px 40px rgba(16,24,40,.14);
  --r:18px;--font:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color-scheme:light
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --accent-bg:color-mix(in srgb,var(--accent) 24%,#151821);--accent-ink:color-mix(in srgb,var(--accent) 45%,#fff);
  --bg:#0E1016;--bg2:#141720;--card:#171A23;--sunk:#10131A;--line:#2A2F3C;--line2:#3C4252;--text:#ECEEF4;--muted:#A6ADBF;
  --good:#3DBE8A;--good-bg:#12301F;--good-ink:#9BE6C4;--bad:#F08A73;--bad-bg:#3A1C16;--bad-ink:#FFC2B3;--warn-bg:#33270B;--warn-ink:#F7D58A;--warn-text:#F2C25C;
  --ai:#C9B0FF;--ai-bg:#2A1F45;--shadow:0 1px 2px rgba(0,0,0,.4);--shadow-lg:0 10px 40px rgba(0,0,0,.5);color-scheme:dark}}
:root[data-theme="dark"]{
  --accent-bg:color-mix(in srgb,var(--accent) 24%,#151821);--accent-ink:color-mix(in srgb,var(--accent) 45%,#fff);
  --bg:#0E1016;--bg2:#141720;--card:#171A23;--sunk:#10131A;--line:#2A2F3C;--line2:#3C4252;--text:#ECEEF4;--muted:#A6ADBF;
  --good:#3DBE8A;--good-bg:#12301F;--good-ink:#9BE6C4;--bad:#F08A73;--bad-bg:#3A1C16;--bad-ink:#FFC2B3;--warn-bg:#33270B;--warn-ink:#F7D58A;--warn-text:#F2C25C;
  --ai:#C9B0FF;--ai-bg:#2A1F45;--shadow:0 1px 2px rgba(0,0,0,.4);--shadow-lg:0 10px 40px rgba(0,0,0,.5);color-scheme:dark}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);background-image:radial-gradient(1200px 500px at 50% -200px,var(--accent-soft),transparent 70%);background-repeat:no-repeat;color:var(--text);font:400 16px/1.6 var(--font);-webkit-font-smoothing:antialiased}
a{color:var(--accent-ink)}
.k-wrap{max-width:880px;margin:0 auto;padding:0 16px 48px;display:flex;flex-direction:column;gap:18px;min-height:100vh}
/* Header */
.k-top{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;margin:0 -16px;padding-inline:16px;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid transparent}
.k-top.scrolled{border-bottom-color:var(--line)}
.k-logo{font-weight:800;font-size:18px;letter-spacing:-.3px;color:var(--text);text-decoration:none;display:flex;align-items:center;gap:10px;min-width:0}
.k-logo span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.k-logo i{width:34px;height:34px;border-radius:11px;background:linear-gradient(140deg,var(--accent),color-mix(in srgb,var(--accent) 55%,#000));display:grid;place-items:center;flex:none;color:#fff;font:800 16px var(--font);font-style:normal;box-shadow:0 4px 12px color-mix(in srgb,var(--accent) 35%,transparent)}
.k-actions{display:flex;gap:6px;align-items:center;flex:none}
.k-ic{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--text);display:grid;place-items:center;cursor:pointer;font:700 15px var(--font);padding:0}
.k-ic:hover{border-color:var(--accent)}.k-ic svg{width:19px;height:19px}
.k-chip{font-size:12px;font-weight:700;padding:6px 10px;border-radius:20px;background:var(--warn-bg);color:var(--warn-ink);white-space:nowrap}
.k-pill{font-size:12px;font-weight:600;padding:5px 10px;border-radius:20px;background:var(--accent-bg);color:var(--accent-ink)}
h1,h2,h3{margin:0;line-height:1.22;letter-spacing:-.3px}h1{font-size:clamp(26px,5.2vw,38px);letter-spacing:-.9px;font-weight:800}h2{font-size:19px;font-weight:750}h3{font-size:16px;font-weight:700}p{margin:0}
.muted{color:var(--muted);font-size:14px}.small{font-size:13px}
/* Hero */
.k-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--accent-bg),color-mix(in srgb,var(--accent-bg) 55%,var(--card)));border:1px solid color-mix(in srgb,var(--accent) 16%,var(--line));border-radius:24px;padding:28px 22px;display:flex;flex-direction:column;gap:12px}
.k-hero:after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--accent) 22%,transparent),transparent 70%);pointer-events:none}
.k-eyebrow{font-size:12px;font-weight:800;letter-spacing:1.3px;text-transform:uppercase;color:var(--accent-ink)}
.k-hero ul{list-style:none;margin:2px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.k-hero li{font-size:13px;font-weight:600;padding:6px 11px 6px 9px;border-radius:20px;background:var(--card);border:1px solid var(--line);color:var(--text);display:flex;gap:6px;align-items:center}
.k-hero li:before{content:"✓";color:var(--good);font-weight:800}
.k-hero.compact{padding:16px 18px;gap:6px}.k-hero.compact h1{font-size:22px;letter-spacing:-.4px}.k-hero.compact:after{display:none}
.k-hero .k-cta{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}
/* Guide */
.k-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;counter-reset:st}
.k-step{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px;display:flex;flex-direction:column;gap:4px;counter-increment:st}
.k-step:before{content:counter(st);width:28px;height:28px;border-radius:9px;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:800;font-size:14px;margin-bottom:4px}
.k-step b{font-size:15px}.k-step span{font-size:13px;color:var(--muted);line-height:1.5}
@media (max-width:620px){.k-steps{grid-template-columns:1fr}.k-step{flex-direction:row;flex-wrap:wrap;align-items:baseline;gap:4px 10px}.k-step:before{margin:0}.k-step span{flex-basis:100%}}
.k-tips{margin:0;padding-left:20px;font-size:14px;color:var(--muted);line-height:1.6}
/* Cards & controls */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;display:flex;flex-direction:column;gap:12px;min-width:0;box-shadow:var(--shadow)}
.btn{min-height:46px;border-radius:13px;border:0;background:var(--accent);color:#fff;font:700 15px var(--font);padding:0 18px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;text-align:center;box-shadow:0 2px 8px color-mix(in srgb,var(--accent) 30%,transparent),inset 0 1px 0 rgba(255,255,255,.15);transition:transform .12s,background .15s,box-shadow .15s}
.btn:hover{background:var(--accent-ink);background:color-mix(in srgb,var(--accent) 85%,#000)}.btn:active{transform:scale(.98)}
.btn.sec{background:var(--card);color:var(--text);border:1px solid var(--line2);font-weight:650;box-shadow:none}.btn.sec:hover{background:var(--sunk);border-color:var(--accent)}
.btn.danger{background:var(--card);color:var(--bad);border:1px solid color-mix(in srgb,var(--bad) 40%,var(--line));font-weight:650;box-shadow:none}.btn.sm{min-height:38px;font-size:13px;padding:0 12px;border-radius:11px}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 55%,#fff);outline-offset:2px}[tabindex="-1"]:focus{outline:none}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.row.between{justify-content:space-between}.grow{flex:1}
.grid{display:grid;gap:12px}.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:620px){.g2,.g3{grid-template-columns:1fr}.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
label.f{font-size:13px;font-weight:650;display:flex;flex-direction:column;gap:6px;min-width:0}
input,select,textarea{min-height:46px;width:100%;border-radius:12px;border:1px solid var(--line2);padding:0 12px;font:500 15px var(--font);background:var(--card);color:var(--text);transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}
textarea{padding:12px;min-height:120px;line-height:1.55;resize:vertical}
input[type=checkbox],input[type=radio]{width:22px;height:22px;min-height:0;accent-color:var(--accent);flex:none;margin:0;box-shadow:none}
input[type=color]{padding:2px;min-height:40px}
.seg{display:flex;flex-wrap:wrap;gap:8px}.seg button{min-height:42px;padding:0 14px;border-radius:12px;border:1px solid var(--line2);background:var(--card);color:var(--text);font:600 14px var(--font);cursor:pointer;transition:all .15s}.seg button:hover{border-color:var(--accent)}.seg button[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#fff}
.tabs{display:flex;gap:4px;padding:4px;border-radius:15px;background:var(--sunk);border:1px solid var(--line);overflow-x:auto}
.tabs button{flex:1;min-height:42px;border:0;border-radius:11px;background:transparent;color:var(--muted);font:650 14px var(--font);cursor:pointer;white-space:nowrap;padding:0 12px}.tabs button[aria-selected=true]{background:var(--card);color:var(--text);font-weight:750;box-shadow:var(--shadow)}
.stat{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px;display:flex;flex-direction:column;gap:2px;min-width:0;box-shadow:var(--shadow);position:relative;overflow:hidden}.stat:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--accent);opacity:.8}
.stat b{font-size:24px;font-weight:800;letter-spacing:-.5px;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.stat span{font-size:12px;color:var(--muted);font-weight:600}
.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.li{display:flex;align-items:center;gap:10px;padding:11px 0;border-bottom:1px solid var(--line)}.li:last-child{border-bottom:0}.li .t{flex:1;min-width:0;overflow-wrap:anywhere}.li .t span{display:block;font-size:12px;color:var(--muted)}
.tag{font-size:11px;font-weight:800;padding:4px 9px;border-radius:20px;background:var(--accent-bg);color:var(--accent-ink);text-transform:uppercase;letter-spacing:.5px;white-space:nowrap}
.banner{padding:12px 14px;border-radius:13px;font-size:14px;line-height:1.5}.banner.ok{background:var(--good-bg);color:var(--good-ink)}.banner.bad{background:var(--bad-bg);color:var(--bad-ink)}.banner.warn{background:var(--warn-bg);color:var(--warn-ink)}.banner.info{background:var(--accent-bg);color:var(--accent-ink)}
.bar{height:9px;border-radius:9px;background:var(--sunk);overflow:hidden;border:1px solid var(--line)}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),color-mix(in srgb,var(--accent) 70%,#fff));border-radius:9px;transition:width .35s}
.big{font-size:42px;font-weight:800;letter-spacing:-1.2px;line-height:1.1;font-variant-numeric:tabular-nums}
.opt{min-height:54px;width:100%;padding:12px 15px;border-radius:14px;display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line2);color:var(--text);font:550 15px/1.45 var(--font);text-align:left;cursor:pointer;transition:border-color .15s,transform .12s,background .15s}
.opt:hover:not(:disabled){border-color:var(--accent);background:var(--accent-soft)}.opt:active:not(:disabled){transform:scale(.99)}.opt.right{background:var(--good-bg);border:2px solid var(--good)}.opt.wrong{background:var(--bad-bg);border:2px solid var(--bad)}.opt.sel{background:var(--accent-bg);border:2px solid var(--accent)}.opt:disabled{cursor:default}
details{border:1px solid var(--line);border-radius:14px;padding:12px 14px;background:var(--card)}details summary{cursor:pointer;font-weight:700}details[open] summary{margin-bottom:8px}
.k-interest{border:1.5px dashed var(--line2);box-shadow:none;background:transparent}
.k-foot{margin-top:auto;font-size:12px;line-height:1.6;color:var(--muted);border-top:1px solid var(--line);padding-top:16px}
.k-extra{display:flex;flex-direction:column;gap:16px}.k-extra:empty{display:none}
.k-sec-h{font-size:12px;font-weight:800;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted);margin:6px 2px -6px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
[hidden]{display:none!important}
/* Dialog sheet */
dialog.k-sheet{border:0;padding:0;border-radius:22px;max-width:560px;width:calc(100% - 24px);background:var(--card);color:var(--text);box-shadow:var(--shadow-lg)}
dialog.k-sheet::backdrop{background:rgba(10,12,20,.45);backdrop-filter:blur(2px)}
.k-sheet-in{padding:20px;display:flex;flex-direction:column;gap:14px;max-height:80vh;overflow:auto}
.k-sheet-in .k-steps{grid-template-columns:1fr}
/* Toast */
.k-toasts{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);display:flex;flex-direction:column;gap:8px;z-index:50;pointer-events:none;width:min(92vw,420px)}
.k-toast{background:#1B1F2B;color:#fff;padding:12px 16px;border-radius:14px;font-size:14px;font-weight:600;box-shadow:var(--shadow-lg);animation:kt .25s ease-out;text-align:center}
@keyframes kt{from{opacity:0;transform:translateY(10px)}}
.k-confetti{position:fixed;inset:0;pointer-events:none;z-index:60;overflow:hidden}
.k-confetti i{position:absolute;top:-12px;width:9px;height:14px;border-radius:2px;animation:kc 1.6s cubic-bezier(.2,.6,.4,1) forwards}
@keyframes kc{to{transform:translate(var(--dx),105vh) rotate(var(--r));opacity:.9}}
/* Empty state */
.k-empty{display:flex;flex-direction:column;align-items:center;text-align:center;gap:8px;padding:22px 12px;border:1.5px dashed var(--line2);border-radius:16px;color:var(--muted)}
.k-empty b{color:var(--text);font-size:16px}
/* AI */
.ai-card{border:1.5px solid color-mix(in srgb,var(--ai) 45%,var(--line));background:linear-gradient(180deg,color-mix(in srgb,var(--ai-bg) 55%,var(--card)),var(--card) 120px)}
.ai-tag{background:var(--ai-bg);color:var(--ai)}
.ai-md h3{margin:12px 0 4px;font-size:16px}.ai-md p{margin:6px 0;line-height:1.65}.ai-md ul,.ai-md ol{margin:4px 0;padding-left:22px;line-height:1.65}
.ai-think{animation:aip 1.4s ease-in-out infinite}@keyframes aip{50%{opacity:.45}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
@media print{.k-top,.k-interest,.k-foot,.k-extra,.btn{display:none!important}body{background:#fff}}
@media (max-width:520px){.k-top{gap:6px}.k-actions{gap:4px}.k-ic{width:36px;height:36px;border-radius:11px}.k-ic svg{width:17px;height:17px}.k-logo{font-size:16px;gap:8px}.k-logo i{width:30px;height:30px;font-size:14px}.k-sync-t{display:none}#k-sync{padding:6px 8px}#k-streak{font-size:11px;padding:5px 7px}}