:root{
  --bg:#ffffff; --bg-soft:#f7f7f9; --ink:#0a0b0d; --ink-2:#3c414b; --mut:#6e7480;
  --line:#e8e8ee; --line-2:#f1f1f5;
  --accent:#5b3df5; --accent-2:#7c5cff; --accent-soft:#f1edff; --good:#0a7d46; --good-soft:#e9f7ef;
  --code:#0e1018; --radius:16px; --max:1080px;
  --grad:linear-gradient(100deg,#5b3df5,#7c5cff 45%,#3f7bff);
  --shadow:0 1px 2px rgba(10,11,13,.04),0 10px 30px rgba(10,11,13,.05);
  --shadow-card:0 1px 2px rgba(10,11,13,.05),0 18px 48px rgba(10,11,13,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:17px/1.65 "Inter",ui-sans-serif,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;letter-spacing:-.011em;overflow-x:hidden}
.container{max-width:var(--max);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.narrow{max-width:740px}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.06;letter-spacing:-.035em;font-weight:800;color:var(--ink)}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.muted{color:var(--mut)} .small{font-size:13px} .xs{font-size:12.5px;color:var(--mut)}
em{font-style:normal;color:var(--accent)}
.mono,.badge,.tier,.code-body code,.calc-row output,.bar-label span:last-child,.ab-l,.ab-v,.hv-title{
  font-family:"JetBrains Mono",ui-monospace,Menlo,monospace}

.logo{width:26px;height:26px;display:inline-block;vertical-align:-7px;object-fit:contain}

/* buttons */
.btn-primary{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:999px;padding:12px 22px;
  font-weight:600;font-size:14.5px;cursor:pointer;color:#fff;background:var(--ink);transition:transform .15s,box-shadow .2s}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(10,11,13,.2)}
.btn-primary.lg{padding:15px 28px;font-size:16px}
.btn-primary.block,.btn-light.block{display:flex;justify-content:center;width:100%}
.btn-ghost{padding:10px 16px;font-weight:600;font-size:14px;color:var(--ink);border:1px solid var(--line);border-radius:999px;background:#fff;transition:.18s}
.btn-ghost:hover{border-color:#d7d7df;background:#fafafb}
.btn-link{font-weight:600;color:var(--accent)}.btn-link:hover{text-decoration:underline}
.btn-light{background:#fff;color:var(--ink);border:0;border-radius:999px;padding:14px 24px;font-weight:700;cursor:pointer;transition:.15s}
.btn-light:hover{transform:translateY(-1px)}

/* nav — floating frosted island */
.nav{position:sticky;top:0;z-index:60;padding:14px 0;transition:padding .25s}
.nav.scrolled{padding:10px 0}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:9px 9px 9px 18px;border-radius:16px;border:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease}
.nav.scrolled .nav-inner{background:rgba(255,255,255,.72);border-color:var(--line);
  box-shadow:0 1px 2px rgba(10,11,13,.04),0 12px 34px rgba(10,11,13,.07);
  -webkit-backdrop-filter:saturate(180%) blur(18px);backdrop-filter:saturate(180%) blur(18px)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.02em}
.brand-name{background:linear-gradient(180deg,var(--ink),#2b2f3a);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{padding:8px 13px;border-radius:10px;font-weight:500;font-size:14.5px;color:var(--mut);
  transition:color .15s,background .15s}
.nav-links a:hover{color:var(--ink);background:var(--bg-soft)}
.nav-links a.active{color:var(--accent)}
.nav-cta{display:flex;align-items:center;gap:10px}
@media(max-width:920px){.nav-links{display:none}.nav-cta .btn-ghost{display:none}}

/* hero */
.hero{position:relative;overflow:hidden;padding:120px 0 80px;text-align:center;
  background:
    radial-gradient(1100px 560px at 50% -240px, #f3f0ff 0%, rgba(243,240,255,0) 58%),
    linear-gradient(180deg,#fcfbff 0%,#ffffff 74%)}
/* signature flow-field background (hand-built canvas) */
.flowfx{position:absolute;inset:0;z-index:0;width:100%;height:100%;pointer-events:none;
  -webkit-mask-image:radial-gradient(115% 92% at 50% 30%,#000 48%,transparent 100%);
          mask-image:radial-gradient(115% 92% at 50% 30%,#000 48%,transparent 100%)}
.hero-inner{position:relative;z-index:1}
.tagline{font-size:clamp(14px,1.7vw,17px);font-style:italic;font-weight:400;color:var(--mut);
  letter-spacing:0;margin-bottom:22px}
h1{font-size:clamp(44px,7.2vw,80px);font-weight:800;letter-spacing:-.045em}
.hero-h1{font-size:clamp(46px,7.8vw,86px);font-weight:800;letter-spacing:-.052em;line-height:1.02}
.hero-h1 br{line-height:0}
/* rotating use-case word (Sail-style) */
.rot{display:inline-block;transition:opacity .34s cubic-bezier(.2,.7,.2,1),transform .34s cubic-bezier(.2,.7,.2,1);will-change:opacity,transform}
.rot.out{opacity:0;transform:translateY(-14px)}
.lede{max-width:640px;margin:24px auto 0;font-size:clamp(17px,2.1vw,20px);color:var(--ink-2);line-height:1.6}
.lede strong{color:var(--ink);font-weight:600}
.hero-actions{display:flex;align-items:center;justify-content:center;gap:22px;margin:32px 0 0;flex-wrap:wrap}

/* hero product visual (light) */
.hero-visual{position:relative;max-width:600px;margin:60px auto 0}
.hv-card{position:relative;z-index:2;text-align:left;border-radius:16px;overflow:hidden;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-card)}
.hv-glow{position:absolute;inset:-24px;z-index:1;border-radius:34px;background:radial-gradient(closest-side,rgba(124,92,255,.16),transparent 75%);filter:blur(28px)}
.hv-head{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line-2);background:#fbfbfd}
.hv-head .d{width:11px;height:11px;border-radius:50%}.d.r{background:#ff5f57}.d.y{background:#febc2e}.d.g{background:#28c840}
.hv-title{margin-left:8px;font-size:12px;color:var(--mut)}
.hv-body{padding:20px 18px 16px;display:flex;flex-direction:column;gap:13px}
.hv-line{font-size:13.5px}.mono.dim{color:var(--mut)}.mono.str{color:#0a7d46}
.hv-route{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:6px 0}
.hv-step{display:flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;color:var(--ink-2);
  background:#f6f6f9;border:1px solid var(--line);border-radius:9px;padding:7px 11px}
.hv-step i{font-style:normal;width:16px;height:16px;border-radius:50%;background:var(--grad);color:#fff;font-size:10px;display:grid;place-items:center;font-weight:800}
.hv-arr{color:#c5c8d0}
.hv-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid var(--line-2);padding-top:14px}
.hv-ok{color:var(--good);font-weight:600;font-size:13.5px}
.hv-cost{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--mut)}.hv-cost b{font-size:15px;color:var(--ink)}
.hv-save{color:var(--good);background:var(--good-soft);border:1px solid #c7ecd6;border-radius:999px;padding:4px 11px;font-size:11.5px;font-weight:700}

/* stats */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0;
  background:linear-gradient(180deg,#fbfbfd,#f7f7fa)}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
@media(max-width:700px){.stats-row{grid-template-columns:1fr 1fr;gap:32px 16px}}
.stat-n{font-size:40px;font-weight:800;letter-spacing:-.04em;line-height:1;color:var(--ink)}
.stat-l{font-size:13.5px;color:var(--mut);margin-top:8px}

/* bands */
.band{position:relative;padding:120px 0;overflow:hidden;
  border-top:1px solid;border-image:linear-gradient(90deg,transparent,var(--line) 18%,var(--line) 82%,transparent) 1}
.band>.container{position:relative;z-index:1}
.band.alt{background:linear-gradient(180deg,#fafafb 0%,#f4f4f8 100%)}
.band.alt::before{content:"";position:absolute;z-index:0;width:720px;height:720px;border-radius:50%;
  top:-340px;right:-260px;filter:blur(110px);opacity:.5;pointer-events:none;
  background:radial-gradient(closest-side,rgba(124,92,255,.07),transparent 70%)}
.band.alt:nth-of-type(even)::before{right:auto;left:-260px;
  background:radial-gradient(closest-side,rgba(63,123,255,.06),transparent 70%)}
.section-head{max-width:680px;margin:0 auto 56px;text-align:center}
.kicker{font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.section-head h2,.split-copy h2,.manifesto h2,.cta h2{font-size:clamp(30px,4.4vw,46px);font-weight:800;letter-spacing:-.04em}
.section-head p{margin:18px auto 0;color:var(--ink-2);font-size:18px}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}

/* router */
.router{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:20px}

/* premium tier slider (Sail-style) */
.slider-wrap{padding:26px 30px 22px}
.slider-caps{display:flex;justify-content:space-between;font-size:11.5px;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--mut);margin-bottom:18px}
.slider-track{position:relative;padding:0 2px}
.tier-slider{--pct:33.33%;width:100%;height:10px;border-radius:999px;-webkit-appearance:none;appearance:none;cursor:pointer;
  background:linear-gradient(90deg,var(--accent) 0 var(--pct),#e9eaf0 var(--pct) 100%);outline:none;transition:background .2s}
.tier-slider::-webkit-slider-thumb{-webkit-appearance:none;width:26px;height:26px;border-radius:50%;background:var(--ink);
  cursor:pointer;box-shadow:0 0 0 5px #fff,0 3px 12px rgba(10,11,13,.28);transition:transform .12s}
.tier-slider::-webkit-slider-thumb:active{transform:scale(1.08)}
.tier-slider::-moz-range-thumb{width:26px;height:26px;border:none;border-radius:50%;background:var(--ink);
  cursor:pointer;box-shadow:0 0 0 5px #fff,0 3px 12px rgba(10,11,13,.28)}
.slider-ticks{display:flex;justify-content:space-between;margin-top:16px;padding:0 2px}
.tk{border:0;background:transparent;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:13px;font-weight:600;
  color:var(--mut);cursor:pointer;padding:4px 4px;transition:color .15s}
.tk:hover{color:var(--ink)}
.tk.active{color:var(--accent)}
@media(max-width:560px){.tk{font-size:11px}.slider-wrap{padding:22px 18px 18px}}

.router-card{padding:24px}
.router-top{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:20px}
.prompt{font-size:17px;font-weight:600;margin-top:4px}
.badge{font-size:12px;font-weight:600;color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:6px 13px;white-space:nowrap;text-transform:capitalize}
.flow{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.step{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:550;color:var(--ink-2);background:#f6f6f9;border:1px solid var(--line);border-radius:10px;padding:8px 12px;animation:pop .35s ease both}
.step .n{width:18px;height:18px;border-radius:50%;background:var(--grad);color:#fff;font-size:11px;display:grid;place-items:center;font-weight:800}
.flow .arr{color:#c5c8d0;align-self:center}
@keyframes pop{from{opacity:0;transform:translateY(5px)}}
.router-bottom{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.bar-wrap{flex:1;min-width:250px}
.bar-label{display:flex;justify-content:space-between;font-size:12.5px;color:var(--mut);margin:10px 0 5px;font-weight:550}
.bar-label span:last-child{color:var(--ink)}
.bar{height:10px;border-radius:999px;background:#edeef2;overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;transition:width .55s cubic-bezier(.2,.7,.2,1)}
.bar.base i{background:#cfd2db}.bar.ours i{background:var(--grad)}
.savings-chip{font-weight:800;font-size:15px;color:var(--good);background:var(--good-soft);border:1px solid #c7ecd6;border-radius:14px;padding:13px 18px;white-space:nowrap}
.savings-chip span{font-size:24px}

/* split */
.split{display:grid;grid-template-columns:1fr 1.05fr;gap:64px;align-items:center}
@media(max-width:920px){.split{grid-template-columns:1fr;gap:40px}}
.split-copy h2{margin-bottom:16px}.split-copy p{color:var(--ink-2);font-size:18px}
.ticks{list-style:none;padding:0;margin:22px 0 28px;display:flex;flex-direction:column;gap:12px}
.ticks li{padding-left:30px;position:relative;color:var(--ink-2)}
.ticks li::before{content:"✓";position:absolute;left:0;top:0;width:20px;height:20px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:800;display:grid;place-items:center}
.ticks.light li{color:#cfd2db}.ticks.light li::before{background:rgba(255,255,255,.14);color:#fff}

/* 30x amortization chart */
.amort{padding:28px}
.amort-head{font-weight:600;font-size:15px;color:var(--mut);margin-bottom:22px}
.amort-bars{display:flex;flex-direction:column;gap:15px}
.ab{display:grid;grid-template-columns:112px 1fr 64px;align-items:center;gap:14px}
.ab-l{font-size:12.5px;color:var(--mut)}
.ab-bar{height:12px;background:#edeef2;border-radius:999px;overflow:hidden}
.ab-bar i{display:block;height:100%;background:var(--grad);border-radius:999px}
.ab-v{font-size:12.5px;text-align:right;color:var(--ink)}
.ab.best .ab-v{color:var(--good);font-weight:700}
.amort-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:24px;padding-top:18px;border-top:1px solid var(--line-2);font-size:13px;color:var(--mut)}
.amort-foot b{color:var(--good);font-size:17px}

/* code (dark on light) */
.code{border-radius:var(--radius);overflow:hidden;background:var(--code);box-shadow:var(--shadow-card)}
.code-head{display:flex;align-items:center;justify-content:space-between;padding:9px 11px;background:#161a26;border-bottom:1px solid #232a3b}
.code-tabs{display:flex;gap:3px}
.ct{border:0;background:transparent;color:#97a1b8;font-weight:600;font-size:12.5px;padding:7px 13px;border-radius:8px;cursor:pointer}
.ct:hover{color:#e7eaf2}.ct.active{background:var(--code);color:#fff}
.copy{border:1px solid #2a3346;background:transparent;color:#c4cbdc;font-size:12px;font-weight:600;padding:6px 13px;border-radius:8px;cursor:pointer}
.copy:hover{background:#1b2233}
.code-body{margin:0;padding:20px 22px;overflow-x:auto}
.code-body code{font-size:13px;line-height:1.75;color:#e7eaf2;white-space:pre}
.code-body .k{color:#c792ff}.code-body .s{color:#7ee787}.code-body .c{color:#6b7385;font-style:italic}

/* grids */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:920px){.grid-4{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:1fr}}
.feat{padding:26px;transition:transform .2s,box-shadow .2s}
.feat:hover{transform:translateY(-3px);box-shadow:var(--shadow-card)}
.fic{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--accent);font-size:18px;margin-bottom:16px}
.feat h3{font-size:18px;margin-bottom:9px}.feat p{color:var(--mut);font-size:14.5px;margin:0;line-height:1.55}
.feat b{color:var(--ink)}
.mini{padding:24px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:.2s}
.mini:hover{box-shadow:var(--shadow)}
.mini h4{font-size:16px;margin-bottom:8px}.mini p{color:var(--mut);font-size:14.5px;margin:0}

/* calculator */
.calc{padding:28px}
.calc-head{font-weight:700;font-size:16px;margin-bottom:20px}
.calc-row{display:flex;justify-content:space-between;font-weight:600;font-size:13px;color:var(--mut);margin:18px 0 8px}
.calc-row output{color:var(--ink)}
input[type=range]{width:100%;height:5px;border-radius:999px;-webkit-appearance:none;appearance:none;background:#e9eaf0;outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent);cursor:pointer;box-shadow:0 0 0 4px var(--accent-soft)}
.calc-out{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:26px}
.calc-stat{background:#f7f7fb;border:1px solid var(--line);border-radius:12px;padding:15px}
.calc-stat.hero{grid-column:1/-1;background:linear-gradient(120deg,var(--good-soft),var(--accent-soft));border-color:#cdeedd}
.cs-l{font-size:12px;color:var(--mut);font-weight:600}
.cs-v{font-size:25px;font-weight:800;margin-top:4px}
.cs-v.accent{color:var(--accent)}.cs-v.save{color:var(--good);font-size:32px}

/* manifesto */
.manifesto{background:radial-gradient(760px 460px at 50% -40px,#f4f1ff 0%,#ffffff 66%)}
.manifesto .narrow{margin:0 auto}.manifesto h2{margin-bottom:20px}
.manifesto p{font-size:20px;color:var(--ink-2);margin:0 0 20px;line-height:1.7}
.manifesto strong{color:var(--ink);font-weight:600}

/* pricing */
.plans{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:880px;margin:0 auto}
@media(max-width:920px){.plans{grid-template-columns:1fr}}
.plan{padding:32px}
.plan.dark{background:var(--ink);border-color:var(--ink);color:#fff}
.plan.dark .muted{color:#9aa0ad}
.plan-name{font-weight:700;color:var(--accent);font-size:14px}
.plan.dark .plan-name{color:#b9a6ff}
.plan-price{font-size:36px;font-weight:800;margin:8px 0 2px}
.plan-price span{font-size:14px;font-weight:500;color:var(--mut)}

/* cta */
.cta{position:relative;padding:120px 0;text-align:center;background:radial-gradient(700px 320px at 50% 120%,#f1edff,#fff)}
.cta p{color:var(--ink-2);font-size:19px;margin:16px 0 30px}

/* footer */
.footer{border-top:1px solid var(--line);padding:36px 0}
.foot-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.foot-links{display:flex;gap:24px;color:var(--mut);font-weight:500}.foot-links a:hover{color:var(--ink)}

/* reveal: visible by default; animates only when JS opts in */
html.js-anim .reveal,html.js-anim .band .card,html.js-anim .band .mini,html.js-anim .band .section-head{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
html.js-anim .in{opacity:1!important;transform:none!important}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}
  html.js-anim .reveal,html.js-anim .band .card,html.js-anim .band .mini,html.js-anim .band .section-head{opacity:1;transform:none}}