:root{
  --bg:#ffffff;--fg:#14151a;--muted:#62656f;--faint:#8b8e98;--line:#e6e7eb;--soft:#f5f5f8;
  --accent:#4f46e5;--accent-fg:#ffffff;--accent-soft:#eef0ff;--ring:rgba(79,70,229,.35);
  --font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0d0e12;--fg:#ececf1;--muted:#a1a4ae;--faint:#7c7f89;--line:#24262e;--soft:#16171d;
  --accent:#a5a6ff;--accent-fg:#0d0e12;--accent-soft:#1c1d33;--ring:rgba(165,166,255,.4);
}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;background:var(--bg);color:var(--fg);font:16px/1.5 var(--font);-webkit-font-smoothing:antialiased}
button,input{font:inherit;color:inherit}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:3px solid var(--ring);outline-offset:2px}

.app{flex:1;width:100%;max-width:620px;margin:0 auto;padding:0 20px;display:flex;flex-direction:column;justify-content:center;gap:22px;padding-bottom:8vh}
.brand{text-align:center}
.h1{margin:0;font-weight:inherit;font-size:inherit;display:flex;flex-direction:column;align-items:center}
.home{text-decoration:none}
.tag{display:block}
.home{display:inline-flex;align-items:center;gap:3px;background:none;border:0;padding:4px 6px;border-radius:12px;cursor:pointer;color:var(--fg)}
.mark{width:34px;height:34px;color:var(--accent);transform:translateY(3px)}
.word{font-weight:700;font-size:34px;letter-spacing:.06em;line-height:1}
.tag{margin:6px 0 0;color:var(--muted);font-size:15px;letter-spacing:.02em}

.ask{display:flex;align-items:center;gap:6px;background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:6px 6px 6px 20px;box-shadow:0 1px 2px rgba(0,0,0,.04),0 4px 16px rgba(0,0,0,.04);transition:border-color .15s,box-shadow .15s}
.ask:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--ring)}
.ask input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:17px;padding:10px 0}
.ask input::placeholder{color:var(--faint)}
#send{flex:none;width:44px;height:44px;border-radius:999px;border:0;background:var(--accent);color:var(--accent-fg);display:grid;place-items:center;cursor:pointer}
#send svg{width:20px;height:20px}
#send:disabled{opacity:.5;cursor:default}

.starters{display:flex;justify-content:center;flex-wrap:wrap;gap:8px}
.chip,.opt{border:1px solid var(--line);background:var(--bg);color:var(--fg);border-radius:999px;padding:9px 16px;font-size:15px;cursor:pointer;transition:background .15s,border-color .15s}
.chip:hover,.opt:hover{border-color:var(--accent);background:var(--accent-soft)}
.opt:disabled{opacity:.4;cursor:default;background:var(--bg);border-color:var(--line)}
.opt.on{opacity:1;border-color:var(--accent);background:var(--accent-soft)}

/* Active (after first question): brand to top, input to bottom */
body.active .app{justify-content:flex-start;padding-top:20px;padding-bottom:20px;gap:18px}
body.active .h1{flex-direction:row;align-items:center;justify-content:space-between;width:100%}
body.active .word{font-size:20px}
body.active .mark{width:22px;height:22px}
body.active .tag{font-size:13px;margin:0}
body.active .starters{display:none}
body.active .ask{order:3;position:sticky;bottom:12px}

.thread{display:flex;flex-direction:column;gap:18px}
.thread:empty{display:none}
.you{color:var(--muted);font-size:15px;margin:0}
.q{font-size:21px;font-weight:600;letter-spacing:-.01em;margin:0 0 12px}
.opts{display:flex;flex-wrap:wrap;gap:8px}
.wait{display:flex;gap:6px;padding:8px 0}
.wait i{width:7px;height:7px;border-radius:50%;background:var(--faint);animation:b 1s infinite ease-in-out}
.wait i:nth-child(2){animation-delay:.15s}.wait i:nth-child(3){animation-delay:.3s}
@keyframes b{0%,80%,100%{opacity:.25}40%{opacity:1}}
@media (prefers-reduced-motion:reduce){.wait i{animation:none;opacity:.6}}

.card{border:1px solid var(--line);border-radius:20px;padding:22px;background:var(--bg);box-shadow:0 1px 2px rgba(0,0,0,.04),0 8px 28px rgba(0,0,0,.05)}
.card .cat{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin:0 0 8px}
.card h2{font-size:23px;line-height:1.25;letter-spacing:-.01em;margin:0 0 10px}
.card .why{margin:0 0 8px}
.card .cav{margin:0 0 4px;color:var(--muted);font-size:14px}
.card .row{display:flex;align-items:center;gap:14px;margin-top:16px;flex-wrap:wrap}
.buy{display:inline-block;background:var(--accent);color:var(--accent-fg);text-decoration:none;font-weight:600;padding:12px 22px;border-radius:999px}
.buy:hover{filter:brightness(1.08)}
.again{background:none;border:0;color:var(--muted);text-decoration:underline;text-underline-offset:3px;cursor:pointer;padding:6px 2px;font-size:14px}

.foot{max-width:620px;width:100%;margin:0 auto;padding:16px 20px calc(18px + env(safe-area-inset-bottom));color:var(--faint);font-size:12px;line-height:1.5;text-align:center}
.foot p{margin:2px 0}
.foot .credit{margin-top:8px}
.foot .credit a{color:inherit;text-decoration:underline;text-underline-offset:2px}
.foot .credit a:hover{color:var(--muted)}
@media (min-width:700px){.q{font-size:23px}.word{font-size:40px}.mark{width:40px;height:40px}}