:root{
    --bg:#f3f6f4; --bg2:#e7efeb; --card:#ffffff; --ink:#0e1d1a; --ink2:#3a4a46; --muted:#667873; --line:#d9e4df;
    --night:#0b1a17; --night2:#122620; --night3:#1a342c; --mint:#2fd9a0; --mint2:#12a877; --mintD:#0b7c58; --amber:#ffb347; --ember:#ff7a45;
    --sans: system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
    --mono: ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  }
  *{box-sizing:border-box} html{scroll-behavior:smooth}
  body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden;overflow-x:clip}
  a{color:inherit}
  .wrap{max-width:1150px;margin:0 auto;padding:0 20px}
  .sr{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

  .topnav{position:sticky;top:0;z-index:40;background:rgba(11,26,23,.9);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.07);color:#fff}
  .topnav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
  .logo{font:850 21px/1 var(--sans);letter-spacing:-.03em;text-decoration:none;display:flex;align-items:center;gap:10px}
  .logo .mk{width:30px;height:30px;border-radius:10px 10px 10px 3px;background:linear-gradient(135deg,var(--mint),#7cf0c8);display:grid;place-items:center}
  .logo .mk svg{width:17px;height:17px}
  .logo small{font:500 12px var(--sans);color:#8fb3a8;letter-spacing:0}

  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;text-decoration:none;
    font:800 16px/1 var(--sans);padding:16px 24px;border-radius:14px;background:var(--mint);color:var(--night);
    box-shadow:0 10px 26px -10px rgba(47,217,160,.75);transition:transform .12s,background .2s}
  .btn:hover{transform:translateY(-2px);background:#5ce6b6}
  .btn:active{transform:translateY(1px)}
  .btn:focus-visible,input:focus-visible,button:focus-visible,summary:focus-visible,a:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
  .btn.sm{padding:11px 16px;font-size:14px}

  /* hero */
  .hero{background:var(--night);color:#fff;padding:58px 0 84px;position:relative;overflow:hidden;overflow:clip}
  .hero::before{content:"";position:absolute;width:680px;height:680px;border-radius:50%;background:radial-gradient(circle,rgba(47,217,160,.28),transparent 65%);right:-200px;top:-260px;pointer-events:none}
  .hero::after{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(255,179,71,.16),transparent 65%);left:-220px;bottom:-300px;pointer-events:none}
  .hero .grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;position:relative;z-index:1}
  .hero .grid>*{min-width:0}
  .pill{display:inline-flex;gap:8px;align-items:center;font:700 13px var(--mono);color:#bff3e0;background:rgba(47,217,160,.1);border:1px solid rgba(47,217,160,.3);padding:7px 14px;border-radius:999px}
  .pill i{width:8px;height:8px;border-radius:50%;background:var(--amber);animation:pulse 1.6s infinite}
  @keyframes pulse{50%{opacity:.3}}
  h1{font:900 clamp(42px,6.2vw,80px)/.98 var(--sans);letter-spacing:-.045em;margin:22px 0 22px}
  h1 .fade{background:linear-gradient(90deg,#fff 0%,var(--mint) 45%,rgba(47,217,160,.15) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
  .lede{font-size:clamp(18px,2vw,21px);color:#bccdc7;max-width:540px;margin:0 0 28px}
  .lede b{color:#fff}
  .signup{display:flex;gap:10px;max-width:520px;flex-wrap:wrap}
  .signup input{flex:1 1 230px;min-width:0;background:#fff;border:2px solid transparent;color:var(--ink);font:16px var(--sans);padding:14px 16px;border-radius:14px}
  .signup input:focus{border-color:var(--mint)}
  .micro{font-size:14px;color:#9fb8b0;margin-top:14px;display:flex;gap:6px 18px;flex-wrap:wrap}
  .micro span::before{content:"✓ ";color:var(--mint);font-weight:800}

  /* chat demo */
  .chat{background:#f7faf8;color:var(--ink);border-radius:26px;box-shadow:0 40px 80px -30px rgba(0,0,0,.7),0 0 0 1px rgba(255,255,255,.08);overflow:hidden;position:relative}
  .ch-top{display:flex;align-items:center;gap:12px;padding:14px 16px;background:#fff;border-bottom:1px solid var(--line)}
  .ch-av{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--amber),var(--ember));display:grid;place-items:center;font:800 15px var(--sans);color:#fff;flex:none}
  .ch-who{flex:1;min-width:0;line-height:1.25}
  .ch-who b{display:block;font-size:16px}
  .ch-who span{font-size:12.5px;color:var(--muted)}
  .lab{font:700 10.5px var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--mintD);background:#dcf7ec;padding:5px 9px;border-radius:999px;white-space:nowrap;flex:none}
  .msgs{height:318px;overflow-y:auto;padding:16px 14px 10px;display:flex;flex-direction:column;gap:10px;scroll-behavior:smooth}
  .day{align-self:center;font:700 11px var(--sans);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);background:var(--bg2);padding:4px 10px;border-radius:999px}
  .m{max-width:82%;display:flex;flex-direction:column;gap:4px;transition:opacity .6s,transform .6s,filter .6s}
  .m.them{align-self:flex-start}
  .m.me{align-self:flex-end;align-items:flex-end}
  .bub{padding:10px 14px;border-radius:18px;font-size:15px;line-height:1.4;overflow-wrap:anywhere}
  .bub .mimg{display:block;width:170px;max-width:100%;height:96px;border-radius:12px;margin:0 0 7px;background:linear-gradient(180deg,#bfe3f5 0 55%,#8a6a4a 55% 62%,#f0d9b0 62%);box-shadow:inset 0 0 0 3px rgba(255,255,255,.5)}
  .bub .mlink{display:block;border-left:3px solid var(--mint2);background:rgba(0,0,0,.04);border-radius:8px;padding:6px 9px;margin:0 0 7px}
  .bub .mlink b{display:block;font-size:13.5px}.bub .mlink small{font-size:11.5px;opacity:.75}
  .them .bub{background:#fff;border:1px solid var(--line);border-bottom-left-radius:6px}
  .me .bub{background:linear-gradient(135deg,var(--mint2),#18c28c);color:#fff;border-bottom-right-radius:6px}
  .tm{display:flex;align-items:center;gap:6px;font:600 11px var(--mono);color:var(--muted);font-variant-numeric:tabular-nums}
  .tm .bar{width:44px;height:4px;border-radius:2px;background:#dfe8e4;overflow:hidden}
  .tm .bar i{display:block;height:100%;background:var(--mint2);border-radius:2px}
  .tm.low{color:#c2571f}.tm.low .bar i{background:var(--ember)}
  .m.new{animation:pop .4s ease-out}
  @keyframes pop{from{opacity:0;transform:translateY(8px) scale(.97)}to{opacity:1;transform:none}}
  .m.gone{opacity:0;transform:translateY(-6px) scale(.96);filter:blur(4px)}
  .typing{align-self:flex-start;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px 14px;display:none;gap:4px}
  .typing.on{display:flex}
  .typing i{width:6px;height:6px;border-radius:50%;background:#9fb3ad;animation:bob 1s infinite}
  .typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
  @keyframes bob{50%{transform:translateY(-4px)}}
  .empty{display:none;margin:auto;text-align:center;color:var(--muted);font-size:15px;padding:20px}
  .empty b{display:block;font-size:34px;margin-bottom:4px}
  .empty strong{color:var(--ink)}
  .msgs.clear .empty{display:block;animation:pop .5s}
  .composer{display:flex;gap:8px;padding:10px 12px;background:#fff;border-top:1px solid var(--line)}
  .composer input{flex:1;min-width:0;border:2px solid var(--line);border-radius:999px;padding:11px 16px;font:15px var(--sans);color:var(--ink);background:var(--bg)}
  .composer input:focus{border-color:var(--mint2);outline:none}
  .send{flex:none;width:46px;height:46px;border-radius:50%;border:0;background:var(--mint2);color:#fff;cursor:pointer;display:grid;place-items:center;transition:background .2s}
  .send:hover{background:var(--mintD)}
  .send svg{width:20px;height:20px}
  .ff{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:12px 14px;background:var(--night2);color:#cfe1db;font-size:13px}
  .ffbtn{border:1px solid rgba(255,179,71,.5);background:rgba(255,179,71,.12);color:#ffd49a;font:800 14px var(--sans);padding:10px 14px;border-radius:12px;cursor:pointer;display:inline-flex;gap:8px;align-items:center}
  .ffbtn:hover{background:rgba(255,179,71,.22)}
  .ffbtn[disabled]{opacity:.5;cursor:default}
  .dnote{font-size:12.5px;color:#8fb3a8;text-align:center;margin:12px 0 0}

  section{padding:94px 0}
  .kicker{font:800 12px var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--mintD);margin-bottom:12px}
  h2{font:900 clamp(32px,4.5vw,54px)/1.03 var(--sans);letter-spacing:-.04em;margin:0 0 16px}
  h2 em{font-style:normal;color:var(--mint2)}
  .sub{color:var(--ink2);font-size:19px;max-width:650px;margin:0}
  .center{text-align:center}.center .sub{margin:0 auto}

  .strip{padding:22px 0;background:var(--card);border-bottom:1px solid var(--line)}
  .strip .wrap{display:flex;align-items:center;gap:10px 12px;flex-wrap:wrap;justify-content:center}
  .strip b{font:800 12px var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-right:6px}
  .chip{font:700 14px var(--sans);padding:7px 14px;border-radius:999px;background:var(--bg2);color:var(--ink2)}

  .probs{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px}
  .pb{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:28px;position:relative;overflow:hidden}
  .pb .ic{font-size:28px;display:block;margin-bottom:12px}
  .pb h3{margin:0 0 8px;font:850 21px/1.2 var(--sans);letter-spacing:-.02em}
  .pb p{margin:0;color:var(--ink2);font-size:16px}
  .pb .stamp{position:absolute;top:18px;right:18px;font:700 11px var(--mono);color:#b04a1b;background:#ffede3;padding:3px 8px;border-radius:6px}

  .feats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px}
  .fc{background:var(--bg2);border-radius:22px;padding:28px}
  .fc .ic{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-size:22px;background:#fff;margin-bottom:14px;box-shadow:0 4px 14px -6px rgba(18,168,119,.5)}
  .fc h3{margin:0 0 6px;font:850 21px/1.2 var(--sans);letter-spacing:-.02em}
  .fc p{margin:0;color:var(--ink2);font-size:16px}
  .fc.dark{background:var(--night);color:#fff}.fc.dark p{color:#bccdc7}.fc.dark .ic{background:var(--night3);box-shadow:none}
  .fc.wide{grid-column:span 2;display:flex;gap:22px;align-items:center}
  .fc.wide .clock{flex:none;width:104px;height:104px;border-radius:50%;background:conic-gradient(var(--mint) 0 72%,var(--night3) 72% 100%);display:grid;place-items:center}
  .fc.wide .clock span{width:80px;height:80px;border-radius:50%;background:var(--night);display:grid;place-items:center;font:800 15px var(--mono);color:#fff}

  .how{background:var(--night);color:#fff}
  .how .sub{color:#bccdc7}.how .kicker{color:var(--mint)}.how h2 em{color:var(--mint)}
  .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
  .st{border:1px solid rgba(255,255,255,.1);border-radius:22px;padding:28px;background:var(--night2)}
  .st .n{font:800 13px var(--mono);color:var(--night);background:var(--mint);display:inline-block;padding:5px 10px;border-radius:8px;margin-bottom:16px}
  .st h3{margin:0 0 6px;font:850 21px var(--sans)}
  .st p{margin:0;color:#bccdc7;font-size:16px}

  .promise{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px}
  .pc{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px}
  .pc b{display:block;font:850 18px var(--sans);letter-spacing:-.01em;margin-bottom:4px}
  .pc b::before{content:"";display:block;width:26px;height:26px;border-radius:8px 8px 8px 2px;background:linear-gradient(135deg,var(--mint),#9ff2d4);margin-bottom:12px}
  .pc span{color:var(--ink2);font-size:15px}

  .faq{max-width:780px;margin:44px auto 0}
  details{border-bottom:1px solid var(--line);padding:20px 0}
  summary{cursor:pointer;list-style:none;font:800 19px/1.35 var(--sans);letter-spacing:-.01em;display:flex;justify-content:space-between;gap:16px}
  summary::-webkit-details-marker{display:none}
  summary::after{content:"+";font:800 24px/1 var(--sans);color:var(--mint2);transition:transform .2s;flex:none}
  details[open] summary::after{transform:rotate(45deg)}
  details p{color:var(--ink2);margin:12px 0 0}

  .final{text-align:center;background:var(--night);color:#fff;border-radius:32px;margin:0 20px 40px;padding:96px 20px;position:relative;overflow:hidden;overflow:clip}
  .final::before{content:"";position:absolute;left:50%;top:-320px;width:640px;height:640px;margin-left:-320px;border-radius:50%;background:radial-gradient(circle,rgba(47,217,160,.3),transparent 65%);pointer-events:none}
  .final>*{position:relative}
  .final h2{color:#fff;font-size:clamp(38px,6vw,74px)}
  .final h2 em{color:var(--mint)}
  .final .sub{color:#bccdc7;margin:0 auto}
  .final .signup{margin:32px auto 0;justify-content:center}
  .final .micro{justify-content:center}
  .final .kicker{color:var(--amber)}

  footer{padding:24px 0 100px;color:var(--muted);font-size:14px}
  footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
  footer .fl{display:flex;gap:18px;flex-wrap:wrap}
  footer .fl a{text-decoration:none} footer a:hover{color:var(--ink)}

  .mcta{position:fixed;left:12px;right:12px;bottom:12px;z-index:45;display:none;transform:translateY(140%);transition:transform .3s}
  .mcta.show{transform:none} .mcta .btn{width:100%;padding:17px;box-shadow:0 10px 30px rgba(11,26,23,.4)}

  .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s,transform .6s}
  .reveal.on{opacity:1;transform:none}

  @media (max-width:960px){
    .hero .grid{grid-template-columns:1fr;gap:44px}
    .chat{max-width:520px;width:100%;margin:0 auto}
    .probs{grid-template-columns:1fr}
    .feats{grid-template-columns:1fr 1fr}
    .steps{grid-template-columns:1fr}
    .promise{grid-template-columns:1fr 1fr}
    section{padding:66px 0}
    .mcta{display:block}
    .topnav .btn{display:none}
    .final{margin:0 12px 30px;padding:70px 18px;border-radius:24px}
  }
  @media (max-width:640px){
    .feats,.promise{grid-template-columns:1fr} .fc.wide{grid-column:auto;flex-direction:column;align-items:flex-start}
    .signup .btn{width:100%}
    .chat{border-radius:20px}
    .msgs{height:300px;padding:14px 10px 8px}
    .m{max-width:88%}
    .ch-who span{display:none}
    .ch-top{padding:12px}
    .ff{justify-content:center;text-align:center}
  }
  @media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.msgs{scroll-behavior:auto}*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}