:root{--bg:#03060b;--panel:#07111b;--panel2:#091723;--line:rgba(145,215,245,.13);--text:#f4f8fc;--muted:#8c9bad;--cyan:#63e8ff;--blue:#1599ff;--green:#68f2b0;--max:1240px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}.wrap{width:min(var(--max),calc(100% - 52px));margin:auto}.noise{position:fixed;inset:0;pointer-events:none;z-index:30;opacity:.015;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}.fx{position:fixed;z-index:-2;pointer-events:none;filter:blur(110px);opacity:.17;border-radius:50%}.fx1{width:420px;height:420px;right:-170px;top:80px;background:#006eff}.fx2{width:370px;height:370px;left:-210px;top:1000px;background:#00cfff}
header{position:sticky;top:0;z-index:20;background:rgba(3,6,11,.76);backdrop-filter:blur(20px);border-bottom:1px solid var(--line)}.nav{height:78px;display:flex;align-items:center;gap:34px}.brand img{display:block;width:158px;height:auto}.nav nav{display:flex;gap:27px;margin-left:auto}.nav nav a,.foot>div a{font-size:10px;color:#8c9bac;font-weight:900;text-transform:uppercase;letter-spacing:.08em}.nav nav a:hover,.foot>div a:hover{color:#fff}.nav-actions{display:flex;gap:8px}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:10px;font-size:10px;font-weight:950;text-transform:uppercase;letter-spacing:.06em;transition:.22s ease}.primary{background:linear-gradient(135deg,#0b8dff,#18c9ff);color:#02101a;box-shadow:0 12px 34px rgba(21,153,255,.22)}.primary:hover{transform:translateY(-2px);box-shadow:0 18px 46px rgba(21,153,255,.34)}.ghost{border:1px solid rgba(99,232,255,.2);background:rgba(255,255,255,.018);color:#d9f8ff}.ghost:hover{transform:translateY(-2px);border-color:rgba(99,232,255,.42)}.nav-actions .btn{padding:11px 15px}.menu{display:none;background:none;border:1px solid var(--line);color:#dceaf5;border-radius:8px;padding:8px 10px}
.hero{min-height:calc(100vh - 78px);padding:82px 0 90px;display:grid;grid-template-columns:.9fr 1.1fr;gap:45px;align-items:center}.eyebrow{font-size:9px;font-weight:950;letter-spacing:.2em;color:var(--cyan);text-transform:uppercase}.eyebrow span{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 14px rgba(104,242,176,.7);margin-right:8px}h1{font-size:clamp(62px,8vw,112px);line-height:.82;letter-spacing:-.095em;margin:21px 0 27px}h1 em,h2 em{font-style:normal;color:var(--cyan)}.hero-copy>p{max-width:630px;color:#a2afbf;font-size:17px;line-height:1.65}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:27px}.big{min-width:178px;padding:16px 20px}.big b{margin-left:14px}.proof{display:flex;gap:11px;align-items:center;flex-wrap:wrap;margin-top:23px;color:#66778a;font-size:8px;letter-spacing:.1em}.proof i{width:3px;height:3px;border-radius:50%;background:#315066}
.hero-stage{position:relative;min-height:570px;display:grid;place-items:center}.stage-ring{position:absolute;border:1px solid rgba(99,232,255,.1);border-radius:50%}.r1{width:610px;height:610px}.r2{width:450px;height:450px;border-color:rgba(21,153,255,.14)}.app-window{position:relative;width:min(700px,100%);padding:9px;border:1px solid rgba(99,232,255,.2);border-radius:20px;background:linear-gradient(145deg,#0d1825,#04080d);box-shadow:0 40px 120px rgba(0,0,0,.55);transform:perspective(1200px) rotateY(-4deg)}.bar{height:35px;display:flex;align-items:center;gap:12px;padding:0 10px;border-bottom:1px solid var(--line);color:#657589;font:9px ui-monospace,SFMono-Regular,Menlo,monospace}.bar b{margin-left:auto;color:var(--green);font-size:8px}.app{display:grid;grid-template-columns:125px 1fr;min-height:440px}.app aside{border-right:1px solid var(--line);padding:18px 9px}.app aside img{width:106px;margin-bottom:28px}.app aside a{display:block;padding:11px;border-radius:8px;color:#66778b;font-size:11px;margin:3px 0}.app aside a.active{color:#e1fbff;background:rgba(99,232,255,.07);border:1px solid rgba(99,232,255,.11)}.app aside a span{margin-left:7px}.conversation{display:flex;flex-direction:column}.conv-head{padding:17px 18px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between}.conv-head strong{display:block;font-size:13px}.conv-head small,.bubble small,.attachment small,.float small{display:block;color:#6f8195;font-size:9px;margin-top:3px}.conv-head>span{color:var(--cyan)}.messages{flex:1;padding:20px 18px;display:flex;flex-direction:column;gap:11px}.bubble{max-width:77%;padding:10px 12px;border-radius:11px;background:#101b27;font-size:11px}.bubble.out{align-self:flex-end;background:#0b4167;border:1px solid rgba(99,232,255,.14)}.attachment{display:flex;align-items:center;gap:10px;padding:11px;border:1px solid rgba(99,232,255,.18);background:#091621;border-radius:11px;max-width:90%}.doc{display:grid;place-items:center;width:32px;height:37px;border-radius:7px;background:#162a3c;color:var(--cyan);font-size:8px;font-weight:950}.attachment strong{font-size:10px}.attachment>span{margin-left:auto;color:var(--cyan)}.secure-note{align-self:center;color:#718499;border:1px solid var(--line);border-radius:999px;padding:7px 10px;font-size:8px}.compose{display:flex;align-items:center;gap:8px;padding:10px;border-top:1px solid var(--line);color:#718196}.compose div{flex:1;background:#07111a;border:1px solid var(--line);padding:9px 11px;border-radius:9px;font-size:10px}.compose button{width:34px;height:34px;border:0;border-radius:9px;background:#1599ff;color:#00111b;font-weight:950}.float{position:absolute;display:flex;align-items:center;gap:9px;padding:10px 12px;border:1px solid rgba(99,232,255,.17);border-radius:12px;background:rgba(7,14,23,.9);backdrop-filter:blur(16px);box-shadow:0 20px 55px rgba(0,0,0,.45);z-index:4}.float>span{width:27px;height:27px;display:grid;place-items:center;border-radius:8px;background:rgba(99,232,255,.07);color:var(--cyan)}.float b{display:block;font-size:9px}.float small{font-size:8px}.float strong{color:var(--green);margin-left:6px}.f1{right:-5px;top:16%}.f2{left:-8px;bottom:14%}
.proofbar{border-block:1px solid var(--line);background:rgba(6,12,18,.72)}.proofgrid{display:grid;grid-template-columns:repeat(5,1fr)}.proofgrid>div{padding:19px 12px;text-align:center;border-right:1px solid var(--line)}.proofgrid>div:last-child{border:0}.proofgrid strong{display:block;font-size:9px}.proofgrid small{display:block;color:#65768a;font-size:8px;margin-top:4px}
.section{padding:125px 0}.intro{max-width:850px;margin-bottom:46px}.intro h2,.security h2{font-size:clamp(46px,6vw,76px);line-height:.89;letter-spacing:-.085em;margin:15px 0 20px}.intro p,.security p{color:#8d9bad;max-width:720px;font-size:15px}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.feature{position:relative;min-height:245px;padding:25px;border:1px solid var(--line);border-radius:15px;background:linear-gradient(145deg,#09131e,#05090e);transition:.25s}.feature:hover{transform:translateY(-5px);border-color:rgba(99,232,255,.28);box-shadow:0 22px 60px rgba(0,0,0,.28)}.num{position:absolute;right:19px;top:18px;color:#41566c;font:9px ui-monospace,SFMono-Regular,Menlo,monospace}.ico{width:43px;height:43px;display:grid;place-items:center;border:1px solid rgba(99,232,255,.2);border-radius:12px;background:rgba(99,232,255,.035);color:var(--cyan);font-size:18px}.feature h3{font-size:20px;letter-spacing:-.04em;margin:35px 0 8px}.feature p{color:#8594a6;font-size:12px}.chips{display:flex;gap:7px;flex-wrap:wrap;margin-top:18px}.chips span{padding:6px 8px;border:1px solid var(--line);border-radius:7px;color:#8192a6;font-size:8px}.how{display:grid;grid-template-columns:.7fr 1.3fr;gap:75px}.steps{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);background:var(--line);gap:1px}.step{background:var(--bg);padding:27px;min-height:220px}.step>span{color:#486078;font:9px ui-monospace,SFMono-Regular,Menlo,monospace}.stepico{color:var(--cyan);font-size:26px;margin:38px 0 12px}.step h3{font-size:23px;margin:0 0 7px;letter-spacing:-.04em}.step p{color:#8190a3;font-size:12px;margin:0}
.security{padding:120px 0;background:linear-gradient(180deg,#06101a,#03070c);border-block:1px solid var(--line)}.securitygrid{display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:center}.security-list{margin-top:28px;border-top:1px solid var(--line)}.security-list>div{padding:13px 0;border-bottom:1px solid var(--line)}.security-list b{display:block;font-size:10px;color:#dce8f2}.security-list span{display:block;color:#748599;font-size:11px;margin-top:4px}.architecture{min-height:340px;display:flex;align-items:center;justify-content:center;gap:11px;position:relative}.arch-node{padding:17px 13px;text-align:center;border:1px solid rgba(99,232,255,.18);border-radius:13px;background:#07121c;color:#63768a;font-size:7px;font-weight:950;letter-spacing:.12em}.arch-node strong{display:block;color:#dffaff;font-size:9px;margin-top:9px}.arch-core{width:112px;height:112px;border-radius:50%;display:grid;place-content:center;text-align:center;border:1px solid rgba(99,232,255,.25);background:#07131e;box-shadow:0 0 60px rgba(21,153,255,.13)}.arch-core small{font-size:7px;color:#66798c;font-weight:950}.arch-core b{font-size:27px;color:var(--cyan)}.arch-core span{font-size:6px;color:#5e7286}.arch-line{width:50px;height:1px;background:linear-gradient(90deg,transparent,rgba(99,232,255,.7),transparent);position:relative}.arch-line:after{content:"";position:absolute;width:6px;height:6px;top:-3px;left:48%;border-radius:50%;background:var(--cyan);box-shadow:0 0 13px var(--cyan)}.tags{position:absolute;bottom:18px;display:flex;gap:7px;flex-wrap:wrap;justify-content:center}.tags span{padding:7px 9px;border:1px solid var(--line);border-radius:999px;color:#7f91a4;font-size:8px;font-weight:900}
.usegrid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.usecard{padding:25px;border:1px solid var(--line);border-radius:14px;background:#07101a;min-height:210px}.usecard small{color:#5f7488;font-size:8px;font-weight:950;letter-spacing:.14em}.usecard h3{font-size:20px;margin:45px 0 9px;letter-spacing:-.04em}.usecard p{color:#8392a4;font-size:12px}.principles{padding-top:10px}.principlesgrid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:12px}.principlesgrid>div{padding:25px;border:1px solid var(--line);border-radius:14px;background:#07101a}.principlesgrid>div:first-child{grid-row:span 2;background:linear-gradient(145deg,#091521,#04080d)}.principle b{color:#4c6177;font:9px ui-monospace,SFMono-Regular,Menlo,monospace}.principle h3{font-size:18px;margin:35px 0 8px}.principle p{color:#8291a3;font-size:11px}.cta{margin:20px auto 0;padding:75px 60px;border:1px solid rgba(99,232,255,.18);border-radius:22px;background:radial-gradient(circle at 80% 0,rgba(21,153,255,.16),transparent 42%),linear-gradient(145deg,#091521,#04080d);box-shadow:0 35px 100px rgba(0,0,0,.4);display:flex;align-items:center;justify-content:space-between;gap:35px}.cta h2{font-size:clamp(48px,6vw,76px);line-height:.87;letter-spacing:-.085em;margin:15px 0}.cta p{color:#8c9bad}.faq{padding-bottom:100px}.faq details{border-top:1px solid var(--line);padding:21px 0}.faq details:last-child{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;font-size:15px;font-weight:900}.faq details p{color:#8392a4;font-size:13px;max-width:820px}
footer{border-top:1px solid var(--line);padding:34px 0 45px}.foot{display:flex;align-items:center;gap:30px}.foot .brand img{width:150px}.foot p{flex:1;color:#68788b;font-size:10px;margin:0}.foot>div{display:flex;gap:18px}.copyright{margin-top:22px;color:#3e4e60;font-size:9px}.reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}.reveal.on{opacity:1;transform:none}
@media(max-width:1050px){.nav nav{gap:16px}.hero{grid-template-columns:1fr}.hero-copy{max-width:760px}.proofgrid{grid-template-columns:repeat(3,1fr)}.proofgrid>div:nth-child(3){border-right:0}.features{grid-template-columns:1fr 1fr}.usegrid{grid-template-columns:1fr 1fr}.how,.securitygrid{grid-template-columns:1fr;gap:45px}.principlesgrid{grid-template-columns:1fr 1fr}.principlesgrid>div:first-child{grid-row:span 1}}
@media(max-width:720px){.wrap{width:calc(100% - 30px)}.nav{height:68px}.nav nav,.nav-actions .ghost{display:none}.menu{display:block;margin-left:auto}.hero{padding:64px 0 58px;min-height:auto}.hero-stage{min-height:420px}.app-window{transform:none}.app{grid-template-columns:1fr}.app aside{display:none}.r1{width:410px;height:410px}.r2{width:315px;height:315px}.f1{right:-4px;top:7%}.f2{left:-4px;bottom:6%}.proofgrid{grid-template-columns:1fr 1fr}.proofgrid>div:nth-child(2){border-right:0}.proofgrid>div:nth-child(3){border-right:1px solid var(--line)}.section{padding:85px 0}.intro h2,.security h2{font-size:clamp(43px,12vw,62px)}.features,.usegrid,.steps,.principlesgrid{grid-template-columns:1fr}.feature{min-height:215px}.security{padding:85px 0}.architecture{min-height:270px}.arch-line{width:25px}.arch-core{width:88px;height:88px}.cta{display:block;margin-top:0;padding:55px 20px}.cta .actions{margin-top:28px}.actions .big{width:100%}.foot{flex-direction:column;align-items:flex-start}.foot>div{flex-wrap:wrap}h1{font-size:clamp(54px,15vw,76px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}.primary,.ghost,.feature{transition:none}}

/* QR / interactive launch layer */
.hero-scan{margin-top:18px}.scan-link{display:flex;align-items:center;gap:10px;padding:9px 0;border:0;background:none;color:#cfe0eb;text-align:left;cursor:pointer}.scan-link:hover .scan-mini{border-color:rgba(99,232,255,.55);background:rgba(99,232,255,.1);transform:translateY(-1px)}.scan-link>strong{margin-left:8px;color:var(--cyan);font-size:16px}.scan-mini{width:36px;height:36px;display:grid;place-items:center;border:1px solid rgba(99,232,255,.2);border-radius:10px;background:rgba(99,232,255,.04);color:var(--cyan);font-size:18px;transition:.2s}.scan-link b{display:block;font-size:9px;letter-spacing:.11em}.scan-link small{display:block;color:#62758a;font-size:9px;margin-top:3px}
.scan-section{padding-top:20px}.scan-panel{position:relative;display:grid;grid-template-columns:1fr 340px;gap:55px;align-items:center;padding:52px;border:1px solid rgba(99,232,255,.16);border-radius:22px;background:radial-gradient(circle at 75% 40%,rgba(21,153,255,.11),transparent 35%),linear-gradient(145deg,#091520,#04080d);overflow:hidden;box-shadow:0 30px 90px rgba(0,0,0,.32)}.scan-panel:before{content:"";position:absolute;inset:-1px;background:linear-gradient(115deg,transparent 35%,rgba(99,232,255,.06),transparent 65%);pointer-events:none}.scan-copy{position:relative;z-index:1}.scan-copy h2{font-size:clamp(48px,6vw,74px);line-height:.88;letter-spacing:-.085em;margin:15px 0 20px}.scan-copy p{max-width:580px;color:#8797a9;font-size:14px}.scan-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.scan-url{margin-top:15px;color:#52677b;font:10px ui-monospace,SFMono-Regular,Menlo,monospace;word-break:break-all}.qr-card{position:relative;z-index:1;width:280px;justify-self:center;padding:17px 17px 14px;border:1px solid rgba(99,232,255,.22);border-radius:20px;background:#f4f8fa;box-shadow:0 25px 70px rgba(0,0,0,.42),0 0 70px rgba(21,153,255,.08);cursor:pointer;transition:transform .25s ease,box-shadow .25s ease}.qr-card:hover{transform:translateY(-7px) rotate(.4deg);box-shadow:0 34px 90px rgba(0,0,0,.5),0 0 80px rgba(21,153,255,.16)}.qr-card img{display:block;width:100%;height:auto;aspect-ratio:1;image-rendering:pixelated;background:#fff}.qr-caption{display:flex;justify-content:space-between;align-items:end;padding:10px 3px 0;color:#08111a;text-align:left}.qr-caption b{font-size:10px;letter-spacing:.11em}.qr-caption small{font:9px ui-monospace,SFMono-Regular,Menlo,monospace;color:#5e6c77}.qr-glow{position:absolute;left:20px;right:20px;top:17px;height:2px;background:#25bfff;box-shadow:0 0 18px rgba(37,191,255,.7);opacity:.9;animation:qr-scan 2.7s ease-in-out infinite;pointer-events:none;z-index:2}.qr-corner{position:absolute;width:22px;height:22px;border-color:#16a8ff;border-style:solid;z-index:3}.qr-corner.c1{left:11px;top:11px;border-width:2px 0 0 2px;border-radius:9px 0 0 0}.qr-corner.c2{right:11px;top:11px;border-width:2px 2px 0 0;border-radius:0 9px 0 0}.qr-corner.c3{left:11px;bottom:49px;border-width:0 0 2px 2px;border-radius:0 0 0 9px}.qr-corner.c4{right:11px;bottom:49px;border-width:0 2px 2px 0;border-radius:0 0 9px 0}@keyframes qr-scan{0%,100%{transform:translateY(0);opacity:.35}50%{transform:translateY(248px);opacity:1}}
.qr-modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;padding:20px;z-index:100}.qr-modal.open{display:flex}.qr-backdrop{position:absolute;inset:0;background:rgba(0,4,8,.78);backdrop-filter:blur(12px)}.qr-dialog{position:relative;z-index:1;width:min(440px,100%);padding:34px;border:1px solid rgba(99,232,255,.2);border-radius:24px;background:linear-gradient(145deg,#0b1621,#04090e);box-shadow:0 40px 120px rgba(0,0,0,.6)}.qr-dialog h2{font-size:clamp(42px,9vw,58px);line-height:.9;letter-spacing:-.08em;margin:13px 0 20px}.qr-dialog p{color:#8495a8;font-size:12px}.qr-close{position:absolute;right:15px;top:12px;width:38px;height:38px;border:1px solid var(--line);border-radius:10px;background:#07111a;color:#b7c8d6;font-size:24px;cursor:pointer}.qr-close:hover{border-color:rgba(99,232,255,.35);color:#fff}.qr-modal-code{width:min(300px,100%);margin:0 auto 18px;padding:14px;border-radius:18px;background:#f4f8fa;box-shadow:0 20px 60px rgba(0,0,0,.35)}.qr-modal-code img{display:block;width:100%;height:auto;image-rendering:pixelated}.qr-modal-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:20px}.qr-modal-actions .btn{flex:1;min-width:140px}
@media(max-width:720px){.scan-panel{grid-template-columns:1fr;padding:30px 20px;gap:30px}.qr-card{width:min(280px,100%)}.scan-actions .btn{flex:1}.qr-dialog{padding:27px 20px}.hero-scan{margin-top:10px}.scan-link{width:100%}}
@media(prefers-reduced-motion:reduce){.qr-card,.scan-mini{transition:none}.qr-glow{animation:none}}

body.modal-open{overflow:hidden}
.nav nav.open{display:flex}
@media(max-width:720px){.nav nav.open{position:absolute;left:15px;right:15px;top:67px;display:flex;flex-direction:column;gap:4px;padding:12px;border:1px solid var(--line);border-radius:14px;background:rgba(4,9,14,.96);box-shadow:0 24px 70px rgba(0,0,0,.45);z-index:20}.nav nav.open a{padding:12px 10px;border-radius:9px}.nav nav.open a:hover{background:rgba(99,232,255,.06)}}

/* V11 visual polish: stronger brand, cleaner iconography, softer interaction */
.brand img{width:172px}.nav{height:82px}.nav nav a{position:relative;padding:8px 0}.nav nav a:after{content:"";position:absolute;left:0;right:100%;bottom:2px;height:1px;background:var(--cyan);box-shadow:0 0 10px rgba(99,232,255,.45);transition:right .22s ease}.nav nav a:hover:after{right:0}.nav-actions .btn{min-height:38px}
.hero{padding-top:92px}.hero-copy>p{max-width:600px}.hero-stage{filter:saturate(1.04)}.app-window{box-shadow:0 45px 130px rgba(0,0,0,.62),0 0 70px rgba(21,153,255,.06)}
.proofbar{background:linear-gradient(180deg,rgba(7,16,25,.88),rgba(4,9,14,.82))}.proofgrid>div{transition:background .2s ease}.proofgrid>div:hover{background:rgba(99,232,255,.025)}
.section{padding-top:138px}.intro h2{max-width:980px}.feature{overflow:hidden;background:linear-gradient(145deg,rgba(10,20,31,.98),rgba(4,9,14,.98));box-shadow:inset 0 1px 0 rgba(255,255,255,.018)}.feature:before{content:"";position:absolute;inset:auto -20% -70% -20%;height:130px;background:radial-gradient(ellipse,rgba(21,153,255,.11),transparent 68%);pointer-events:none}.feature .ico{position:relative;display:grid;place-items:center}.feature .ico img{width:22px;height:22px}.lockdot{font:800 9px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--cyan);letter-spacing:-.05em}.steps{border-radius:16px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.18)}.step{position:relative;transition:background .2s ease}.step:hover{background:#050c13}.stepico{width:44px;height:44px;border:1px solid rgba(99,232,255,.18);border-radius:13px;display:grid;place-items:center;background:rgba(99,232,255,.035)}.stepico img{width:21px;height:21px;color:var(--cyan);filter:drop-shadow(0 0 7px rgba(99,232,255,.22))}
.scan-panel{padding:58px 62px;border-radius:24px;box-shadow:0 35px 100px rgba(0,0,0,.34),inset 0 1px 0 rgba(255,255,255,.025)}.qr-card{width:300px}.qr-card:after{content:"OPEN →";position:absolute;right:18px;bottom:11px;font:800 8px ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.1em;color:#5d6c76}.scan-copy h2{font-size:clamp(54px,6.4vw,82px)}
.security{background:radial-gradient(circle at 70% 20%,rgba(21,153,255,.06),transparent 28%),linear-gradient(180deg,#06101a,#03070c)}.securitygrid{gap:90px}.architecture{filter:drop-shadow(0 25px 70px rgba(0,0,0,.25))}.usecard,.principlesgrid>div{transition:transform .22s ease,border-color .22s ease,background .22s ease}.usecard:hover,.principlesgrid>div:hover{transform:translateY(-4px);border-color:rgba(99,232,255,.22);background:#08131e}.cta{border-radius:24px;box-shadow:0 40px 120px rgba(0,0,0,.42),inset 0 1px 0 rgba(255,255,255,.02)}
footer{background:linear-gradient(180deg,rgba(4,9,14,.4),rgba(2,5,9,.9))}.foot .brand img{width:172px}.menu{width:42px;height:40px;display:none;place-items:center;gap:4px;padding:8px}.menu span{display:block;width:17px;height:1.5px;background:#cfe6f1;border-radius:2px;transition:transform .2s ease,opacity .2s ease}.menu[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}.menu[aria-expanded="true"] span:nth-child(2){opacity:0}.menu[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}
@media(max-width:1050px){.brand img{width:160px}.nav{gap:22px}.scan-panel{padding:48px}.qr-card{width:280px}}
@media(max-width:720px){.nav{height:70px}.brand img{width:146px}.menu{display:grid}.hero{padding-top:70px}.hero-stage{min-height:450px}.section{padding-top:100px}.scan-panel{padding:32px 20px}.qr-card{width:min(292px,100%)}.foot .brand img{width:146px}}

/* CHAT256 DOCUMENTATION LAYER */
.content-main{padding:70px 0 110px}
.content-hero{padding:65px 0 45px;max-width:980px}
.content-hero h1{font-size:clamp(48px,7vw,88px);max-width:1050px}
.content-hero .lede{font-size:18px;line-height:1.75;color:#a8b5c4;max-width:850px}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:7px;align-items:center;color:#627489;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.08em;margin-bottom:22px}
.breadcrumbs a:hover{color:#fff}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:50px;align-items:start}
.article{min-width:0}.article h2{font-size:clamp(30px,4vw,48px);line-height:1.02;letter-spacing:-.055em;margin:58px 0 16px}
.article h3{font-size:22px;line-height:1.1;letter-spacing:-.035em;margin:36px 0 10px}
.article p,.article li{font-size:16px;line-height:1.8;color:#a3afbd}
.article ul,.article ol{padding-left:24px}.article li{margin:8px 0}.article strong{color:#eaf7ff}
.article a{color:#63e8ff;text-decoration:underline;text-decoration-color:rgba(99,232,255,.25);text-underline-offset:3px}
.article blockquote{margin:30px 0;padding:22px 24px;border-left:2px solid var(--cyan);background:#07121c;color:#cbd9e5}
.article blockquote p{margin:0}
.callout{margin:30px 0;padding:24px;border:1px solid rgba(99,232,255,.15);border-radius:16px;background:linear-gradient(145deg,#091722,#04090e)}
.callout b{display:block;color:var(--cyan);font-size:10px;letter-spacing:.16em;text-transform:uppercase;margin-bottom:8px}.callout p{margin:0}
.cards,.page-links{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:28px 0}
.card,.page-link{padding:24px;border:1px solid var(--line);border-radius:15px;background:#07101a}
.card h3{margin:0 0 8px;font-size:20px}.card p{font-size:13px;line-height:1.65;margin:0}
.page-link{display:block}.page-link:hover{border-color:rgba(99,232,255,.28);transform:translateY(-2px)}
.page-link small{color:#557088;font-size:9px;text-transform:uppercase;letter-spacing:.12em}
.page-link strong{display:block;font-size:18px;margin-top:12px}.page-link span{display:block;color:#7f90a3;font-size:12px;line-height:1.55;margin-top:6px}
.toc{position:sticky;top:105px;padding:22px;border:1px solid var(--line);border-radius:15px;background:#07101a}
.toc strong{display:block;font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);margin-bottom:12px}
.toc a{display:block;color:#8293a6;font-size:11px;padding:7px 0}.toc a:hover{color:#fff}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px;margin:26px 0}
.spec{width:100%;border-collapse:collapse;min-width:560px}.spec th,.spec td{padding:13px 15px;border-bottom:1px solid var(--line);text-align:left;font-size:12px;vertical-align:top}
.spec th{color:#dcecf5;background:#07121c;font-size:10px;text-transform:uppercase;letter-spacing:.08em}.spec td{color:#91a1b2}.spec tr:last-child td{border-bottom:0}
@media(max-width:900px){.content-grid{grid-template-columns:1fr}.toc{position:relative;top:auto}}
@media(max-width:650px){.content-main{padding-top:30px}.content-hero{padding-top:40px}.content-hero h1{font-size:clamp(44px,13vw,70px)}.content-hero .lede{font-size:16px}.article p,.article li{font-size:15px}.cards,.page-links{grid-template-columns:1fr}}

/* v2 usability/performance/content layer */
.skip-link{position:fixed;left:12px;top:-80px;z-index:9999;padding:10px 14px;background:#fff;color:#03060b;border-radius:8px;font-weight:800}.skip-link:focus{top:12px}
.search-bar{display:flex;gap:10px;margin:28px 0;max-width:760px}.search-bar input{flex:1;min-width:0;background:#07101a;border:1px solid var(--line);border-radius:12px;padding:15px 17px;color:#fff;font:inherit}.search-bar button{border:0;cursor:pointer}
.search-results{display:grid;gap:10px}.search-result{display:block;padding:20px;border:1px solid var(--line);border-radius:14px;background:#07101a}.search-result:hover{border-color:rgba(99,232,255,.3)}.search-result strong{display:block;color:#fff;font-size:18px}.search-result span{display:block;color:#8293a6;font-size:13px;line-height:1.55;margin-top:5px}.search-result small{display:block;color:var(--cyan);font-size:9px;text-transform:uppercase;letter-spacing:.12em;margin-bottom:7px}
.reading{color:#627489;font-size:10px;text-transform:uppercase;letter-spacing:.12em;margin-top:15px}.checklist{display:grid;gap:10px;margin:20px 0}.checkitem{display:flex;gap:12px;align-items:flex-start;padding:15px;border:1px solid var(--line);border-radius:12px;background:#07101a}.checkitem input{margin-top:4px;accent-color:#63e8ff}.checkitem label{font-size:13px;line-height:1.55;color:#9eacbb}.progress{height:5px;border-radius:99px;background:#101c28;overflow:hidden;margin:12px 0 22px}.progress i{display:block;height:100%;width:0;background:var(--cyan);transition:width .2s ease}
.kicker-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:25px 0}.kicker{padding:18px;border:1px solid var(--line);border-radius:13px;background:#07101a}.kicker b{display:block;color:#fff;font-size:19px}.kicker span{display:block;color:#73859a;font-size:11px;margin-top:5px;line-height:1.5}
@media(max-width:700px){.kicker-grid{grid-template-columns:1fr}.search-bar{flex-direction:column}.search-bar .btn{width:100%}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}.reveal{opacity:1!important;transform:none!important}}
\n/* Render long documentation sections lazily where supported. */\n.article section{content-visibility:auto;contain-intrinsic-size:1px 420px}\n
/* FINAL PRODUCTION POLISH — 19 SEP 2026 */
:root{--focus:#b9f5ff;--button-h:48px}
.btn{min-height:var(--button-h);padding:0 18px;gap:8px;white-space:nowrap;line-height:1;cursor:pointer;user-select:none;border:1px solid transparent;text-decoration:none!important}
.btn b{font-size:14px;line-height:1;margin-left:2px}
.actions{align-items:center;gap:12px}
.actions .btn{min-height:50px;padding:0 22px}
.primary{border-color:rgba(99,232,255,.22);text-shadow:0 1px 0 rgba(255,255,255,.15)}
.ghost{border-color:rgba(99,232,255,.34);box-shadow:inset 0 1px 0 rgba(255,255,255,.025)}
.btn:focus-visible,.nav nav a:focus-visible,.menu:focus-visible,.article a:focus-visible,.page-link:focus-visible,.card a:focus-visible{outline:2px solid var(--focus);outline-offset:3px}
.btn:active{transform:translateY(0) scale(.985)}
.content-hero .actions{margin-top:30px}
.content-hero .actions .btn{letter-spacing:.055em}
.content-hero h1{max-width:1040px;text-wrap:balance}
.content-hero .lede{text-wrap:pretty}
.article h2,.article h3{scroll-margin-top:110px}
.article code{padding:.15em .38em;border:1px solid var(--line);border-radius:5px;background:#07121c;color:#c9f8ff;font:0.88em ui-monospace,SFMono-Regular,Menlo,monospace}
.page-link,.card,.feature{will-change:transform}
.page-link{transition:transform .2s ease,border-color .2s ease,background .2s ease}
.page-link:hover{background:#08131e}
.search-bar button{min-height:48px}
.search-bar input:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-color:rgba(99,232,255,.45)}
.menu{cursor:pointer}
@media(max-width:720px){
  .nav{gap:10px}
  .nav-actions{display:none}
  .content-main{padding-bottom:80px}
  .content-hero{padding-bottom:30px}
  .content-hero .actions{align-items:stretch}
  .content-hero .actions .btn{width:100%;min-height:52px}
  .breadcrumbs{font-size:9px}
}
@media(max-width:430px){
  .wrap{width:calc(100% - 24px)}
  .content-hero h1{font-size:clamp(40px,12.5vw,58px)}
  .content-hero .lede{font-size:15px}
  .article h2{font-size:31px}
}

.feature-hero-visual{margin-top:34px;border:1px solid rgba(99,232,255,.16);border-radius:22px;overflow:hidden;background:#06101a;box-shadow:0 30px 90px rgba(0,0,0,.35)}
.feature-hero-visual img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;object-position:center;border:0}
@media(max-width:650px){.feature-hero-visual{border-radius:16px;margin-top:24px}.feature-hero-visual img{aspect-ratio:4/3;object-position:52% center}}


/* CHAT256 FINAL CONVERSION UI — 19 SEP 2026 */
:root{--focus:#b9f5ff;--button-h:54px}
.btn{min-width:150px;min-height:54px;padding:0 23px;gap:9px;display:inline-flex;align-items:center;justify-content:center;border-radius:13px;border:1px solid transparent;font-size:11px;font-weight:950;letter-spacing:.065em;line-height:1;text-transform:uppercase;white-space:nowrap;text-decoration:none!important;cursor:pointer;user-select:none;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease,filter .2s ease}
.btn b{font-size:16px;line-height:1;margin-left:2px}
.btn.primary{background:linear-gradient(135deg,#0a8cff 0%,#18c9ff 100%);color:#00131e;border-color:rgba(137,239,255,.48);box-shadow:0 14px 40px rgba(21,153,255,.25),inset 0 1px 0 rgba(255,255,255,.32)}
.btn.primary:hover{transform:translateY(-2px);filter:saturate(1.08);box-shadow:0 20px 52px rgba(21,153,255,.38),inset 0 1px 0 rgba(255,255,255,.36)}
.btn.ghost{background:rgba(7,17,27,.78);color:#e8fbff;border-color:rgba(99,232,255,.38);box-shadow:inset 0 1px 0 rgba(255,255,255,.04)}
.btn.ghost:hover{transform:translateY(-2px);background:rgba(9,23,35,.98);border-color:rgba(99,232,255,.75);box-shadow:0 14px 34px rgba(0,0,0,.22)}
.btn:focus-visible,.menu:focus-visible{outline:3px solid var(--focus);outline-offset:4px}
.btn:active{transform:translateY(0) scale(.985)}
.actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:30px}
.actions .btn{min-height:58px;padding-inline:27px;font-size:11px}
.actions .btn b{font-size:17px}
.nav-actions{display:flex;align-items:center;gap:9px}
.nav-actions .btn{min-width:auto;min-height:44px;padding:0 17px;font-size:10px;border-radius:11px}
.content-hero .actions{margin-top:30px}
.content-hero .actions .btn{letter-spacing:.055em}
.content-hero h1{max-width:1040px;text-wrap:balance}
.content-hero .lede{text-wrap:pretty}
.article h2,.article h3{scroll-margin-top:110px}
.article code{padding:.15em .38em;border:1px solid var(--line);border-radius:5px;background:#07121c;color:#c9f8ff;font:.88em ui-monospace,SFMono-Regular,Menlo,monospace}
.search-bar button{min-height:54px;padding:0 22px;border-radius:12px}
.cta-final{margin:80px 0 0;padding:52px 46px;border:1px solid rgba(99,232,255,.18);border-radius:24px;background:radial-gradient(circle at 85% 20%,rgba(21,153,255,.16),transparent 36%),linear-gradient(145deg,#071521,#04090e);box-shadow:0 30px 90px rgba(0,0,0,.28)}
.cta-final h2{margin:0;font-size:clamp(38px,5vw,64px);line-height:.98;letter-spacing:-.06em}
.cta-final p{max-width:720px;margin:15px 0 0;color:#93a5b7;font-size:16px;line-height:1.7}
.cta-final .actions{margin-top:25px}
@media(max-width:900px){.nav nav{display:none}.menu{display:grid;margin-left:auto}.nav-actions{display:none}}
@media(max-width:720px){.nav{height:70px;gap:10px}.brand img{width:146px}.nav nav.open{position:absolute;left:12px;right:12px;top:70px;display:flex;flex-direction:column;gap:3px;padding:10px;border:1px solid rgba(99,232,255,.22);border-radius:15px;background:rgba(3,8,14,.99);box-shadow:0 24px 70px rgba(0,0,0,.55)}.nav nav.open a{padding:14px 12px;border-radius:9px}.nav nav.open a:hover{background:rgba(99,232,255,.07)}.actions{display:grid;grid-template-columns:1fr;width:100%}.actions .btn{width:100%;min-height:56px}.content-hero .actions{width:100%}.cta-final{padding:38px 22px;margin-top:55px}.cta-final .actions{margin-top:22px}}
@media(max-width:430px){.wrap{width:calc(100% - 24px)}.btn{min-height:52px;padding-inline:18px}.actions .btn{min-height:56px}.content-hero h1{font-size:clamp(40px,12.5vw,58px)}}

/* CHAT256 UNIVERSAL PRODUCTION CTA SYSTEM — 19 SEP 2026 */
.btn,.c256-call-btn,.search-bar button{font-family:inherit;box-sizing:border-box;min-height:54px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:0 24px;border-radius:13px;border:1px solid transparent;font-size:11px;font-weight:950;letter-spacing:.065em;line-height:1;text-transform:uppercase;text-decoration:none!important;cursor:pointer;user-select:none;white-space:nowrap;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,background .18s ease,filter .18s ease;}
.btn.primary,.c256-call-btn{background:linear-gradient(135deg,#0a8cff 0%,#18c9ff 100%);color:#00131e;border-color:rgba(137,239,255,.52);box-shadow:0 14px 40px rgba(21,153,255,.24),inset 0 1px 0 rgba(255,255,255,.3);}
.btn.ghost{background:rgba(7,17,27,.84);color:#e8fbff;border-color:rgba(99,232,255,.4);box-shadow:inset 0 1px 0 rgba(255,255,255,.04);}
.btn.big{min-height:58px;padding-inline:28px;font-size:11px;}
.btn.primary:hover,.c256-call-btn:hover{transform:translateY(-2px);filter:saturate(1.08);box-shadow:0 20px 52px rgba(21,153,255,.38),inset 0 1px 0 rgba(255,255,255,.36);}
.btn.ghost:hover{transform:translateY(-2px);background:rgba(9,23,35,.98);border-color:rgba(99,232,255,.78);box-shadow:0 14px 34px rgba(0,0,0,.22);}
.btn:focus-visible,.c256-call-btn:focus-visible,.menu:focus-visible{outline:3px solid #b9f5ff;outline-offset:4px;}
.btn:active,.c256-call-btn:active{transform:translateY(0) scale(.985);}
.nav-actions .btn{min-height:46px;min-width:120px;padding-inline:18px;font-size:10px;}
.actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
@media(max-width:720px){.actions{display:grid;grid-template-columns:1fr;width:100%;}.actions .btn,.actions .c256-call-btn{width:100%;min-height:56px;}.nav-actions{display:none;}.nav nav.open{display:flex!important;}}


/* CHAT256_FINAL_CTA_SYSTEM */
:root{
  --c256-blue:#1687ff;
  --c256-blue-2:#35a7ff;
  --c256-ink:#07111d;
}
.btn,.button,.nav-cta,.primary,.secondary,.actions a{
  min-height:52px;
  padding:14px 22px;
  border-radius:14px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  font-weight:750;
  line-height:1;
  text-decoration:none;
  box-sizing:border-box;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
}
.btn.primary,.button-primary,.primary,.nav-cta{
  background:linear-gradient(135deg,var(--c256-blue),var(--c256-blue-2));
  color:#fff;
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 12px 30px rgba(22,135,255,.24);
}
.btn.secondary,.button:not(.button-primary),.secondary{
  background:rgba(255,255,255,.06);
  color:inherit;
  border:1px solid rgba(255,255,255,.16);
}
.btn:hover,.button:hover,.nav-cta:hover,.primary:hover,.secondary:hover{
  transform:translateY(-2px);
}
.btn:focus-visible,.button:focus-visible,.nav-cta:focus-visible,.primary:focus-visible,.secondary:focus-visible{
  outline:3px solid rgba(53,167,255,.55);
  outline-offset:3px;
}
@media(max-width:700px){
  .btn,.button,.nav-cta,.primary,.secondary,.actions a{
    min-height:54px;
    width:100%;
  }
}
@media(prefers-reduced-motion:reduce){
  .btn,.button,.nav-cta,.primary,.secondary{transition:none}
}