:root{--paper:#fbfaf7;--paper2:#f2efe8;--white:#fff;--ink:#0a0a0a;--muted:#625f59;--line:#dedbd3;--control:#8d8880;--cyan:#9fe0e2;--cyan-deep:#2ba2a6;--teal:#177c80;--teal-dark:#0e6265;--wash:#e4f4f3;--warn:#805414;--warn-bg:#f5eddd;--red:#963e35;--red-bg:#f8e9e5;--body:Inter,Arial,sans-serif;--display:Montserrat,Arial,sans-serif;--serif:Newsreader,Georgia,serif;--mono:'JetBrains Mono',monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font:15px/1.55 var(--body);-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit}a,button{text-underline-offset:4px}button:disabled{cursor:default;opacity:.48}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:4px}input,textarea,select{color:var(--ink);background:var(--white);border:1px solid var(--control);border-radius:5px;padding:11px 13px;max-width:100%}textarea{resize:vertical}input[type=checkbox],input[type=radio]{accent-color:var(--teal);width:18px;height:18px;padding:0;flex:none}label{display:block;font-weight:500}label>input:not([type=checkbox]):not([type=radio]),label>textarea,label>select{display:block;width:100%;margin-top:8px}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--display);font-weight:550;letter-spacing:-.045em;line-height:1.15}h1{font-size:40px}h2{font-size:32px}h3{font-size:18px;letter-spacing:-.02em}.muted{color:var(--muted)}.small{font-size:13px;line-height:1.5}.eyebrow{font-size:12px;font-weight:500;letter-spacing:.08em;text-transform:uppercase}.serif{font-family:var(--serif);font-weight:400;font-style:italic;letter-spacing:-.035em}.mono{font-family:var(--mono);font-size:12px}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.spread{justify-content:space-between}.stack{display:grid;gap:20px}.btn{display:inline-flex;justify-content:center;align-items:center;gap:10px;min-height:43px;padding:10px 18px;border:1px solid var(--ink);border-radius:6px;background:var(--ink);color:var(--paper);font-size:14px;line-height:1.3;text-decoration:none;font-weight:500;white-space:normal}.btn:hover{background:#292929}.btn.secondary{background:transparent;color:var(--ink);border-color:var(--control)}.btn.secondary:hover{background:var(--paper2)}.btn.cyan{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}.btn.cyan:hover{background:#8bd6d9}.text-btn{border:0;background:transparent;padding:8px 0;font-size:14px;text-decoration:underline;color:var(--ink)}.text-btn:hover{color:var(--teal-dark)}.link-quiet{text-decoration:none}.link-quiet:hover{text-decoration:underline}.icon{width:18px;height:18px;display:inline-block;flex:none;vertical-align:middle;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.brand{display:inline-flex;align-items:center;gap:10px;font:650 22px/1 var(--display);letter-spacing:-.045em;text-decoration:none;white-space:nowrap}.brand img{width:28px;height:28px;object-fit:contain}.concept-bar{min-height:38px;padding:8px 24px;display:flex;gap:16px;align-items:center;justify-content:space-between;background:var(--ink);color:var(--paper);font-size:12px;line-height:1.4}.concept-bar a{color:var(--paper);text-decoration:none}.concept-bar nav{display:flex;gap:20px;flex-wrap:wrap}.concept-bar a[aria-current=page]{color:var(--cyan)}.wrap{width:min(1180px,calc(100% - 96px));margin-inline:auto}.site-nav{min-height:100px;display:flex;align-items:center;justify-content:space-between;gap:28px}.site-nav nav{display:flex;align-items:center;gap:28px;font-size:14px}.site-nav .nav-cta{margin-left:4px}.hero{padding:70px 0 68px;display:grid;grid-template-columns:1.3fr 1fr;gap:70px;align-items:start}.hero h1{font-size:clamp(48px,5.8vw,78px);line-height:1.01;letter-spacing:-.065em;font-weight:550}.hero h1 .serif{display:block;margin-top:8px;font-size:1.1em;color:var(--teal-dark)}.hero .explain{padding-top:10px;max-width:410px}.hero .explain p{font-size:18px;line-height:1.65}.hero .row{margin-top:25px}.hero .access{margin-top:13px;font-size:12px;color:var(--muted)}.product-stage{background:var(--paper2);padding:36px;border-radius:9px;display:grid;grid-template-columns:.76fr 1.24fr;gap:34px;align-items:center;position:relative}.stage-art{width:100%;height:380px;object-fit:cover;border-radius:4px}.stage-label{font-size:12px;color:var(--muted);margin:14px 0 0}.email-preview{background:var(--white);border:1px solid var(--line);border-radius:7px;box-shadow:0 16px 32px #201c1410;overflow:hidden}.email-preview header{padding:16px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px}.avatar{width:35px;height:35px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;flex:none;font-size:12px;font-weight:500;background:var(--paper2);color:var(--ink)}.avatar.cyan{background:var(--cyan)}.preview-content{padding:22px 26px}.email-subject{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:17px}.email-text{font:15px/1.75 var(--body);white-space:pre-wrap}.source-strip{padding:15px 26px;background:var(--wash);font-size:13px;border-top:1px solid #c4dcda}.source-strip strong{font-weight:600}.preview-actions{padding:16px 26px;display:flex;justify-content:space-between;align-items:center;gap:12px}.note{font-size:12px;color:var(--muted)}.section{padding:100px 0;border-bottom:1px solid var(--line)}.section-heading{display:grid;grid-template-columns:1.1fr 1fr;gap:100px;align-items:start;margin-bottom:48px}.section-heading h2{font-size:44px;max-width:530px}.section-heading p{color:var(--muted);font-size:16px;max-width:410px}.process{display:grid;grid-template-columns:repeat(3,1fr);gap:42px}.process article{padding-top:24px;border-top:1px solid var(--ink)}.process h3{font-size:22px;margin:25px 0 13px}.process p{color:var(--muted);max-width:320px}.process .step{font-family:var(--serif);font-size:24px}.plain-proof{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.principles{list-style:none;padding:0;margin:0}.principles li{padding:20px 0;border-bottom:1px solid var(--line)}.principles li:first-child{padding-top:0}.principles strong{font-weight:550;display:block;margin-bottom:6px}.principles p{color:var(--muted);font-size:14px}.quote-panel{padding:42px;background:var(--wash);border-radius:5px}.quote-panel blockquote{font:400 35px/1.17 var(--serif);letter-spacing:-.03em;margin:24px 0}.quote-panel .subnote{font-size:13px;line-height:1.65;color:var(--teal-dark)}.faq-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:100px}.faq-grid h2{font-size:42px}.faq details{border-bottom:1px solid var(--line);padding:18px 0}.faq details:first-child{padding-top:0}.faq summary{font-size:16px;font-weight:500;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px}.faq summary::after{content:'+';font-size:20px}.faq details[open] summary::after{content:'−'}.faq details p{margin-top:12px;color:var(--muted);font-size:14px;max-width:580px}.site-close{padding:76px 0 88px}.site-close h2{font-size:54px;margin:13px 0 27px}.site-close p{color:var(--muted);max-width:420px}.site-footer{padding:30px 0;display:flex;justify-content:space-between;align-items:center;gap:24px;border-top:1px solid var(--line)}.site-footer nav{display:flex;gap:24px;font-size:13px;flex-wrap:wrap}.site-footer .brand{font-size:18px}.site-footer img{width:24px;height:24px}.site-notice{padding:0 0 22px;font-size:12px;color:var(--muted)}
dialog{border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);padding:30px;max-width:min(520px,calc(100% - 32px));width:100%;box-shadow:0 25px 70px #0003}dialog::backdrop{background:#0a0a0a77}dialog h2{font-size:27px;margin-bottom:16px}dialog p{margin-bottom:18px}dialog form{display:grid;gap:18px}.close-dialog{border:0;background:transparent;color:var(--ink);font-size:23px;min-width:36px;min-height:36px}.status-message{padding:12px 15px;background:var(--wash);border-left:3px solid var(--teal);font-size:13px}.status-message:empty{display:none}.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;color:var(--teal-dark)}.badge::before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor}.badge.warn{color:var(--warn)}.badge.neutral{color:var(--muted)}.badge.error{color:var(--red)}