/* Walter site: dark, calm, one glowing blob. System fonts only; no external resources. */
:root{
  --bg:#05070d; --bg2:#0a0f1d; --card:#0c1222; --line:#1c2540; --line2:#2a3557;
  --text:#eef1f8; --muted:#9aa6c4; --glow:#58c4ff; --glow2:#8a7dff; --warm:#ffd48a;
  --radius:20px; --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);
  font:18px/1.6 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
body:before{content:"";position:fixed;inset:-20vh -20vw auto;height:110vh;z-index:-1;pointer-events:none;
  background:radial-gradient(50vw 40vh at 72% 18%,rgba(88,196,255,.16),transparent 70%),
             radial-gradient(40vw 35vh at 20% 0%,rgba(138,125,255,.10),transparent 70%);
  animation:breathe 9s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:.75;transform:translateY(0)}50%{opacity:1;transform:translateY(1.5vh)}}
a{color:var(--glow);text-underline-offset:3px} a:hover{color:#a9dcff}
:focus-visible{outline:3px solid var(--warm);outline-offset:3px;border-radius:6px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.skip{position:absolute;left:-999px;top:8px;background:var(--warm);color:#000;padding:8px 14px;border-radius:8px;z-index:10}
.skip:focus{left:8px}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.draft-banner{background:#2a1f00;color:var(--warm);text-align:center;font-size:13px;padding:5px 12px}

/* header / footer */
header.site{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 22px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;font-weight:750;font-size:21px;color:var(--text);text-decoration:none;letter-spacing:-.01em}
.logo-dot{position:relative;width:28px;height:25px;border-radius:50% 50% 46% 46%;
  background:radial-gradient(circle at 35% 30%,#c9ecff,var(--glow) 48%,#2f86c0);box-shadow:0 0 16px rgba(88,196,255,.7)}
.logo-dot:before,.logo-dot:after{content:"";position:absolute;top:8px;width:5px;height:8px;border-radius:3px;background:#101424}
.logo-dot:before{left:8px}.logo-dot:after{right:8px}
header.site nav{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
header.site nav a{color:var(--muted);font-size:15px;text-decoration:none}
header.site nav a:hover,header.site nav a[aria-current=page]{color:var(--text)}
footer.site{border-top:1px solid var(--line);margin-top:40px;padding:28px 22px 46px;color:var(--muted);font-size:13.5px}
footer.site nav{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:10px} footer.site a{color:var(--muted)}
footer.site p{margin:6px 0;max-width:820px}

/* type */
h1{font-size:clamp(42px,7.4vw,86px);line-height:1.02;margin:0 0 20px;letter-spacing:-.035em;font-weight:800}
h2{font-size:clamp(28px,4vw,44px);line-height:1.1;margin:0 0 12px;letter-spacing:-.025em;font-weight:780}
h3{font-size:19px;margin:0 0 6px;letter-spacing:-.01em}
.eyebrow{display:inline-block;color:var(--glow);font-weight:650;letter-spacing:.12em;text-transform:uppercase;font-size:12.5px;
  margin:0 0 18px;padding:6px 12px;border:1px solid rgba(88,196,255,.35);border-radius:999px;background:rgba(88,196,255,.07)}
.glow-text{background:linear-gradient(95deg,#7fd3ff 10%,#b7a9ff 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(19px,2.2vw,23px);line-height:1.5;color:var(--muted);margin:0 0 30px;max-width:560px}
p.sub{color:var(--muted);margin:0 0 36px;font-size:19px}
.note{font-size:15px;color:var(--muted)} .center{text-align:center} .mt{margin-top:18px}

/* buttons */
.btn{display:inline-block;padding:14px 26px;border-radius:999px;font-weight:650;border:1px solid var(--line2);color:var(--text);
  text-decoration:none;font-size:17px;font-family:inherit;cursor:pointer;background:transparent;margin:4px 8px 4px 0;transition:transform .2s,box-shadow .2s,filter .2s}
.btn.primary{background:linear-gradient(135deg,#6fd0ff,#8a7dff);border:0;color:#041020;box-shadow:0 8px 34px rgba(88,196,255,.35)}
.btn:hover{transform:translateY(-1px);filter:brightness(1.08);color:var(--text)} .btn.primary:hover{color:#041020;box-shadow:0 10px 44px rgba(88,196,255,.5)}
.btn.small{padding:8px 16px;font-size:14px;margin:0} header.site nav a.btn.primary{color:#041020}

/* sections */
section{padding:clamp(56px,8vw,96px) 0}
section.first{padding-top:clamp(20px,4vw,56px)}

/* hero */
.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:24px;align-items:center;min-height:min(78vh,720px)}
.walter-box{position:relative;width:100%;max-width:580px;aspect-ratio:1;margin:0 auto}
.hero-walter:before{content:"";position:absolute;inset:6%;border-radius:50%;pointer-events:none;
  background:radial-gradient(closest-side,rgba(88,196,255,.18),rgba(138,125,255,.06) 60%,transparent)}
.walter-box .walter-still,.walter-box canvas{position:absolute;inset:0;width:100%;height:100%}
.walter-live{display:none;cursor:pointer;-webkit-tap-highlight-color:transparent}
.walter-live.on{display:block}
.walter-still.off{display:none}
.poke{position:absolute;bottom:2%;left:0;right:0;margin:0;text-align:center;font-size:13px;color:#5d6987;letter-spacing:.04em}
.walter-box.small{max-width:240px}

/* board shots in a wall-mounted screen */
.board{text-align:center}
.devices{display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:clamp(24px,4vw,56px);align-items:center;margin-top:12px;
  padding:clamp(28px,5vw,64px);border-radius:32px;
  background:radial-gradient(70% 60% at 50% 0%,rgba(255,240,220,.06),transparent 70%),linear-gradient(180deg,#0d111b,#080b12);
  border:1px solid var(--line)}
.device{position:relative;margin:0;padding:11px;border-radius:22px;background:linear-gradient(150deg,#2b303c,#0d1016 55%,#1b1f29);
  box-shadow:0 2px 0 rgba(255,255,255,.06) inset,0 38px 70px -20px rgba(0,0,0,.85),0 0 90px rgba(88,196,255,.10)}
.device:after{content:"";position:absolute;left:12%;right:12%;bottom:-26px;height:22px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(0,0,0,.6),transparent);z-index:-1}
.device img{display:block;width:100%;height:auto;border-radius:12px;background:#05060a}

/* tiles */
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;list-style:none;margin:0;padding:0}
.tiles li{padding:28px 24px;border-radius:var(--radius);background:linear-gradient(180deg,#0d1426,#0a0f1c);border:1px solid var(--line)}
.tiles p{margin:0;color:var(--muted);font-size:16px}
.ic{display:block;width:50px;height:50px;padding:12px;margin-bottom:18px;border-radius:15px;fill:none;stroke:var(--glow);stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;background:rgba(88,196,255,.08);border:1px solid rgba(88,196,255,.22);box-shadow:0 0 24px rgba(88,196,255,.12)}
.tiles h3{font-size:20px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;list-style:none;padding:0;margin:26px 0 22px;counter-reset:s}
.steps li{counter-increment:s;position:relative;text-align:center;padding:34px 18px 26px;border-radius:var(--radius);border:1px solid var(--line);background:var(--card)}
.steps li:before{content:counter(s);position:absolute;top:14px;left:16px;font-weight:800;color:#3c4a73;font-size:15px}
.steps svg{display:block;width:64px;height:64px;margin-left:auto;margin-right:auto;fill:none;stroke:var(--glow);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;margin-bottom:12px}
.steps span{display:block;font-weight:650;font-size:19px}
.steps li+li:after{content:"";position:absolute;left:-14px;top:50%;width:10px;height:10px;border-top:2px solid #33406a;border-right:2px solid #33406a;transform:translateY(-50%) rotate(45deg)}

/* price */
.price-card{max-width:560px;margin:0 auto;text-align:center;padding:40px 28px;border-radius:28px;border:1px solid #2c3e74;
  background:radial-gradient(80% 90% at 50% 0%,rgba(88,196,255,.13),transparent 70%),var(--card);box-shadow:0 0 60px rgba(88,196,255,.10)}
.price-card p{color:var(--muted);margin:0 0 22px}
.price{font-size:54px;font-weight:800;letter-spacing:-.03em;margin:0 0 6px!important;color:var(--text)!important}
.price small{font-size:18px;color:var(--muted);font-weight:500;letter-spacing:0}

/* faq */
.faq{max-width:760px;margin:0 auto 18px}
details{border-bottom:1px solid var(--line);padding:18px 4px}
summary{cursor:pointer;font-weight:650;font-size:19px;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";color:var(--glow);font-weight:400;font-size:24px;line-height:1;transition:transform .2s}
details[open] summary:after{transform:rotate(45deg)}
details p{color:var(--muted);margin:10px 0 0}
#faq-h,#how-h,#what-h{text-align:center} #what-h{margin-bottom:34px}
.faq-h{font-size:14px;letter-spacing:.12em;text-transform:uppercase;margin:40px 0 4px;color:var(--glow)}

/* inner pages */
.prose{max-width:760px;margin-left:auto;margin-right:auto} .prose h2{margin-top:44px;font-size:28px} .prose h3{margin-top:24px}
.prose p,.prose li{color:#cfd6e8} .prose li{margin:6px 0}
.narrow{max-width:640px;margin-left:auto;margin-right:auto} .center .lead{margin-left:auto;margin-right:auto}
.grid{display:grid;gap:18px;padding:0;margin:0 0 20px;list-style:none}
.g3{grid-template-columns:repeat(3,1fr)} .g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card p{margin:0;color:var(--muted)}
.card.feature{border-color:#2c3e74;box-shadow:0 0 40px rgba(88,196,255,.1)}
ul.ticks{list-style:none;padding:0;margin:14px 0 0} ul.ticks li{padding:4px 0 4px 24px;position:relative;color:var(--muted)}
ul.ticks li:before{content:"";position:absolute;left:4px;top:13px;width:8px;height:8px;border-radius:50%;background:var(--glow);box-shadow:0 0 8px var(--glow)}
figure{margin:0}
.diagram svg{width:100%;height:auto;display:block}
.diagram{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-top:20px}
table{border-collapse:collapse;width:100%;margin:16px 0;font-size:15px} td,th{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.06em}
code{background:#141b33;padding:1px 6px;border-radius:6px;font-size:.92em}
.legal-draft{border:1px solid #6b4f00;background:#1d1600;color:var(--warm);border-radius:12px;padding:12px 16px;margin:20px 0;font-weight:600}

/* form */
form.signup .field{margin-bottom:18px}
form.signup label{display:block;font-weight:600;margin-bottom:6px} .opt{color:var(--muted);font-weight:400}
form.signup input,form.signup select,form.signup textarea{width:100%;padding:14px 16px;border-radius:14px;border:1px solid #33406a;background:#0a0f1e;color:var(--text);font:inherit}
form.signup input:focus,form.signup select:focus,form.signup textarea:focus{border-color:var(--glow);outline:none;box-shadow:0 0 0 3px rgba(88,196,255,.25)}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.form-msg{margin-top:12px;color:var(--warm);min-height:1.4em}

@media (max-width:900px){
  .hero{grid-template-columns:1fr;min-height:0;text-align:center} .hero .lead{margin-left:auto;margin-right:auto}
  .hero-walter{order:-1;max-width:min(78vw,420px);margin-bottom:-10px}
  .devices{grid-template-columns:1fr;justify-items:center} .device.portrait{width:100%;max-width:380px} .device.landscape{width:100%}
  .tiles{grid-template-columns:repeat(2,1fr)} .g3,.g2{grid-template-columns:1fr}
}
@media (max-width:600px){
  body{font-size:17px} header.site nav{gap:14px} header.site nav a:not(.btn){font-size:14px}
  .tiles,.steps{grid-template-columns:1fr} .steps li+li:after{display:none}
  .devices{padding:20px 14px;border-radius:24px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}