/* QT-Bot v2 — professional, lightweight. One font family (Manrope), light pages + dark hero. */
:root{
  --ink:#060B16;--ink-2:#0C1426;--ink-line:#1A2742;--ink-text:#B8C4DA;--ink-muted:#7C8BA8;
  --paper:#0A1120;--white:#0F1829;--line:#1D2A44;--line-2:#152037;
  --text:#E8EDF6;--muted:#97A5BF;--soft:#6E7D99;
  --blue:#3D8BFF;--blue-d:#2F74E6;--blue-50:rgba(61,139,255,.12);
  --up:#22C55E;--up-50:rgba(34,197,94,.10);--down:#F4475B;--down-50:rgba(244,71,91,.10);--amber:#F5A524;--amber-50:rgba(245,165,36,.09);
  --wa:#25D366;
  --r:8px;--r-lg:12px;--max:1180px;--g:16px;
  --font:"Manrope",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html{color-scheme:dark}
body{margin:0;background:var(--paper);color:var(--text);font:500 15px/1.65 var(--font);overflow-x:hidden;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-d);text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.18;letter-spacing:-.02em;font-weight:800;color:var(--text)}
h1{font-size:clamp(1.85rem,4.4vw,2.9rem)}
h2{font-size:clamp(1.3rem,2.6vw,1.75rem)}
h3{font-size:1.02rem;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.2em}
li{margin:.3em 0}
code{font-size:.88em;background:var(--line-2);border:1px solid var(--line);padding:.1em .4em;border-radius:5px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--g)}
.skip{position:absolute;left:-999px;top:0;background:var(--blue);color:#fff;padding:8px 12px;z-index:99}
.skip:focus{left:8px;top:8px}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px}

/* ---------- Header ---------- */
.topbar{background:#04080F;color:var(--ink-muted);font-size:12.5px;border-bottom:1px solid var(--ink-line)}
.topbar .container{display:flex;justify-content:space-between;gap:12px;min-height:34px;align-items:center}
.topbar a{color:var(--ink-text)}
.topbar .hide-sm{display:none}
@media(min-width:760px){.topbar .hide-sm{display:inline}}
.site-header{position:sticky;top:0;z-index:50;background:rgba(10,17,32,.88);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:20px;min-height:58px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:16px;color:var(--text);letter-spacing:-.02em}
.brand:hover{text-decoration:none;color:var(--text)}
.brand svg{width:28px;height:28px}
.nav-links{display:none;list-style:none;margin:0;padding:0;gap:2px;margin-left:8px}
.nav-links a{display:block;padding:7px 11px;border-radius:6px;color:var(--muted);font-weight:600;font-size:14px}
.nav-links a:hover{color:var(--text);background:var(--line-2);text-decoration:none}
.nav-links a[aria-current="page"]{color:var(--blue);background:var(--blue-50)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.menu-btn{width:38px;height:38px;border:1px solid var(--line);border-radius:var(--r);background:var(--white);display:grid;place-items:center;cursor:pointer;color:var(--text)}
.menu-btn svg{width:18px;height:18px}
@media(min-width:1040px){.nav-links{display:flex}.menu-btn{display:none}.mobile-menu,.sheet-backdrop{display:none!important}}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:40px;padding:0 16px;border-radius:var(--r);font:700 14px/1 var(--font);border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s}
.btn svg{width:16px;height:16px;flex:none}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 18px -6px rgba(61,139,255,.6)}
.btn-primary:hover{background:var(--blue-d);color:#fff}
.btn-line{background:var(--white);border-color:var(--line);color:var(--text)}
.btn-line:hover{border-color:#2E4268;color:var(--text)}
.btn-dark-line{background:transparent;border-color:var(--ink-line);color:#fff}
.btn-dark-line:hover{border-color:#3A5482;color:#fff}
.btn-sm{height:34px;padding:0 12px;font-size:13px}
.btn-lg{height:46px;padding:0 20px;font-size:15px}
.btn-row{display:flex;flex-wrap:wrap;gap:8px}
@media(max-width:520px){.hero .btn-row .btn{flex:1 1 100%}}

/* ---------- Hero (the one bold element) ---------- */
.hero{background:var(--ink);color:var(--ink-text);position:relative;overflow:hidden;padding:44px 0 52px}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--ink-line) 1px,transparent 1px),linear-gradient(90deg,var(--ink-line) 1px,transparent 1px);background-size:44px 44px;opacity:.35;mask-image:radial-gradient(ellipse 80% 70% at 70% 40%,#000 20%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 80% 70% at 70% 40%,#000 20%,transparent 75%)}
.hero .container{position:relative;display:grid;gap:34px;align-items:center}
@media(min-width:960px){.hero{padding:72px 0 80px}.hero .container{grid-template-columns:1fr 1.02fr;gap:48px}}
.hero h1{color:#fff;font-size:clamp(2rem,4.6vw,3.15rem);max-width:15ch}
.hero .sub{font-size:16px;color:var(--ink-text);max-width:52ch;margin-bottom:22px}
.hero-status{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-text);margin-bottom:16px;padding:5px 10px 5px 8px;border:1px solid var(--ink-line);border-radius:999px;background:rgba(255,255,255,.03)}
.pulse{width:7px;height:7px;border-radius:50%;background:#22C55E;box-shadow:0 0 0 0 rgba(34,197,94,.6);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 7px rgba(34,197,94,0)}100%{box-shadow:0 0 0 0 rgba(34,197,94,0)}}
.trust{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:20px;font-size:13px;color:var(--ink-muted)}
.trust span{display:inline-flex;align-items:center;gap:6px}
.trust svg{width:14px;height:14px;color:#22C55E}

.terminal{background:#0A1426;border:1px solid var(--ink-line);border-radius:var(--r-lg);box-shadow:0 30px 60px -20px rgba(0,0,0,.6);overflow:hidden;font-size:12.5px}
.term-head{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--ink-line);color:var(--ink-text)}
.term-head b{color:#fff;font-weight:700}
.term-head .tf{margin-left:auto;display:flex;gap:4px}
.term-head .tf span{padding:2px 7px;border-radius:5px;color:var(--ink-muted)}
.term-head .tf .on{background:var(--ink-line);color:#fff}
.chip{display:inline-flex;align-items:center;padding:2px 8px;border-radius:5px;font-weight:700;font-size:11.5px}
.chip-up{background:rgba(14,159,110,.15);color:#3DDC97}
.chip-down{background:rgba(229,72,77,.15);color:#FF7A7E}
.term-chart{padding:8px 6px 0}
.term-chart svg{width:100%;height:auto}
.term-body{display:grid;grid-template-columns:auto 1fr;gap:16px;padding:14px;border-top:1px solid var(--ink-line);align-items:center}
.ring{width:78px;height:78px;position:relative}
.ring svg{width:78px;height:78px;transform:rotate(-90deg)}
.ring b{position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-size:18px;font-weight:800}
.ring small{display:block;text-align:center;color:var(--ink-muted);font-size:11px;margin-top:4px}
.checks-title{display:flex;justify-content:space-between;color:var(--ink-muted);margin-bottom:7px}
.checks-title b{color:#fff;font-weight:700}
.checks{display:grid;grid-template-columns:repeat(9,1fr);gap:4px}
.checks i{display:block;height:16px;border-radius:3px;background:#22C55E}
.checks i.core{outline:1px solid rgba(255,255,255,.55);outline-offset:1px}
.checks i.w{background:#E2A33B}
.checks i.n{background:#2A3B5C}
.legend{display:flex;flex-wrap:wrap;gap:4px 12px;margin-top:8px;color:var(--ink-muted);font-size:11.5px}
.legend span::before{content:"";display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:5px;background:var(--c)}
.term-foot{padding:9px 14px;border-top:1px solid var(--ink-line);color:var(--ink-muted);font-size:11.5px}

/* ---------- Sections ---------- */
.section{padding:56px 0}
@media(min-width:960px){.section{padding:76px 0}}
.section.white{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.head{max-width:640px;margin-bottom:28px}
.head p{color:var(--muted);margin:0}
.head-row{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:end;gap:12px;margin-bottom:24px}
.head-row .head{margin:0}

.metrics{display:grid;grid-template-columns:repeat(2,1fr);border:1px solid var(--line);border-radius:var(--r-lg);background:var(--white);overflow:hidden}
@media(min-width:760px){.metrics{grid-template-columns:repeat(4,1fr)}}
.metrics div{padding:18px 20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.metrics b{display:block;font-size:22px;font-weight:800;letter-spacing:-.02em}
.metrics span{font-size:13px;color:var(--muted)}

/* Layer table (features) */
.layers{display:grid;gap:0;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--white);overflow:hidden}
@media(min-width:760px){.layers{grid-template-columns:1fr 1fr}}
.layer{display:grid;grid-template-columns:56px 1fr;gap:12px;padding:18px 20px;border-bottom:1px solid var(--line)}
@media(min-width:760px){.layer:nth-child(odd){border-right:1px solid var(--line)}}
.layer .tag{font-size:11.5px;font-weight:800;color:var(--blue);background:var(--blue-50);border-radius:6px;height:24px;display:grid;place-items:center}
.layer h3{margin:1px 0 4px}
.layer p{margin:0;color:var(--muted);font-size:14px}

.steps{list-style:none;padding:0;margin:0;display:grid;gap:12px;counter-reset:s}
@media(min-width:860px){.steps.row{grid-template-columns:repeat(4,1fr)}}
.steps li{counter-increment:s;background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;margin:0;position:relative}
.steps li::before{content:counter(s);display:grid;place-items:center;width:26px;height:26px;border-radius:7px;background:var(--blue-50);color:var(--blue);font-size:12.5px;font-weight:800;margin-bottom:10px}
.steps h3{margin-bottom:4px}
.steps p{margin:0;color:var(--muted);font-size:14px}

.guides{display:grid;gap:10px}
@media(min-width:700px){.guides{grid-template-columns:1fr 1fr}}
@media(min-width:1000px){.guides{grid-template-columns:1fr 1fr 1fr}}
.guide{display:block;background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:16px 18px;color:var(--text)}
.guide:hover{border-color:var(--blue);text-decoration:none;color:var(--text)}
.guide small{display:block;font-size:12px;color:var(--blue);font-weight:700;margin-bottom:4px}
.guide h3{margin:0 0 4px}
.guide p{margin:0;font-size:13.5px;color:var(--muted)}

.compare{width:100%;border-collapse:collapse;background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;font-size:14px}
.compare th,.compare td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.compare thead th{background:var(--line-2);font-size:13px}
.yes{color:var(--up);font-weight:700}.no{color:var(--down);font-weight:700}
.table-wrap{overflow-x:auto;border-radius:var(--r-lg)}

/* ---------- Inner pages ---------- */
.page-hero{background:var(--ink);border-bottom:1px solid var(--line);color:var(--ink-text);padding:30px 0 34px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--ink-line) 1px,transparent 1px),linear-gradient(90deg,var(--ink-line) 1px,transparent 1px);background-size:44px 44px;opacity:.25;mask-image:linear-gradient(90deg,transparent,#000);-webkit-mask-image:linear-gradient(90deg,transparent,#000)}
.page-hero .container{position:relative}
.page-hero h1{color:#fff;font-size:clamp(1.65rem,3.6vw,2.35rem);max-width:28ch}
.page-hero .lead{font-size:15.5px;max-width:64ch;margin:0;color:var(--ink-text)}
.crumbs{list-style:none;padding:0;margin:0 0 12px;display:flex;flex-wrap:wrap;gap:6px;font-size:12.5px;color:var(--ink-muted)}
.crumbs li{margin:0}
.crumbs li+li::before{content:"/";margin-right:6px;opacity:.6}
.crumbs a{color:var(--ink-text)}
.byline{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:14px;font-size:12.5px;color:var(--ink-muted)}
.layout{display:grid;gap:32px;padding:34px 0 60px}
@media(min-width:1000px){.layout{grid-template-columns:minmax(0,1fr) 290px;gap:44px}}
.prose{min-width:0;max-width:740px}
.prose h2{margin-top:1.8em;font-size:1.4rem;scroll-margin-top:80px}
.prose h3{margin-top:1.4em}
.prose>h2:first-child{margin-top:0}
.prose table{width:100%;border-collapse:collapse;margin:0 0 1.3em;font-size:14px;background:var(--white);display:block;overflow-x:auto;border:1px solid var(--line);border-radius:var(--r)}
.prose th,.prose td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.prose thead th,.prose tbody th{background:var(--line-2);font-size:13px;white-space:nowrap}
.prose .steps{margin:0 0 1.3em}
.toc{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:14px 18px;margin:0 0 26px;font-size:14px}
.toc strong{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}
.toc ol{margin:0;columns:2;column-gap:28px}
@media(max-width:600px){.toc ol{columns:1}}
.toc li{margin:.25em 0;break-inside:avoid}
.callout{border:1px solid var(--line);border-left:3px solid var(--amber);background:var(--amber-50);padding:12px 16px;border-radius:var(--r);margin:0 0 1.3em;font-size:14.5px}
.callout.info{border-left-color:var(--blue);background:var(--blue-50)}
.callout.good{border-left-color:var(--up);background:var(--up-50)}
.callout p:last-child{margin:0}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px}
.card h3{margin-bottom:6px}
.card p:last-child,.card ul:last-child,.card ol:last-child{margin-bottom:0}
a.card{display:block;color:var(--text)}
a.card:hover{border-color:#2E4268;text-decoration:none}
.card .ico{display:none}
.grid{display:grid;gap:12px;margin-bottom:1.3em}
@media(min-width:640px){.grid-2,.grid-3{grid-template-columns:1fr 1fr}}
@media(min-width:1000px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.pill{display:inline-block;font-size:11.5px;font-weight:700;color:var(--blue);background:var(--blue-50);padding:2px 8px;border-radius:5px}
.small{font-size:13px;color:var(--muted)}
.aside{display:grid;gap:14px;align-content:start}
@media(min-width:1000px){.aside{position:sticky;top:78px}}
.aside .box{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:16px}
.aside .box.dark{background:linear-gradient(160deg,#10203F,#0C1629);border-color:#20345A;color:var(--ink-text)}
.aside .box.dark h3{color:#fff}
.aside h3{font-size:14px;margin-bottom:8px}
.aside ul{list-style:none;padding:0;margin:0}
.aside li{margin:0}
.aside li a{display:block;padding:7px 0;border-bottom:1px solid var(--line-2);color:var(--text);font-size:13.5px;font-weight:600}
.aside li:last-child a{border-bottom:0}
.aside li a:hover{color:var(--blue);text-decoration:none}
.related{margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.related h2{font-size:1.1rem;margin:0 0 12px}

/* FAQ */
.faq{display:grid;gap:8px;margin-bottom:1.2em}
.faq details{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:0 16px}
.faq details[open]{border-color:#2E4268}
.faq summary{cursor:pointer;list-style:none;padding:13px 26px 13px 0;font-weight:700;font-size:14.5px;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:2px;top:19px;width:8px;height:8px;border-right:2px solid var(--soft);border-bottom:2px solid var(--soft);transform:rotate(45deg);transition:transform .15s}
.faq details[open] summary::after{transform:rotate(-135deg);top:22px}
.faq details>div{padding:0 0 14px;color:var(--muted);font-size:14.5px}
.faq details>div p{margin:0}
.faq-cat{font-size:1.05rem!important;margin:26px 0 10px!important}
.search{width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r);background:var(--white);font:500 15px var(--font);color:var(--text)}

/* Forms */
.form{display:grid;gap:12px}
.form label{display:grid;gap:5px;font-weight:700;font-size:13.5px}
.form input,.form select,.form textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:var(--r);background:var(--white);font:500 16px var(--font);color:var(--text)}
.form textarea{min-height:130px;resize:vertical}
.form .row{display:grid;gap:12px}
@media(min-width:640px){.form .row{grid-template-columns:1fr 1fr}}

/* Download */
.dl-box{display:grid;gap:16px;align-items:center;background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;margin-bottom:20px}
@media(min-width:700px){.dl-box{grid-template-columns:auto 1fr auto}}
.app-icon{width:64px;height:64px;border-radius:15px;background:var(--ink);border:1px solid var(--line);display:grid;place-items:center}
.app-icon svg{width:38px;height:38px}
.spec{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:1.3em}
.spec td{padding:9px 0;border-bottom:1px solid var(--line)}
.spec td:first-child{color:var(--muted);width:42%}

/* CTA + risk + footer */
.cta{background:linear-gradient(120deg,#0E1B35,#0B1428 60%,#0D2236);border:1px solid var(--line);border-radius:16px;padding:32px 24px;color:var(--ink-text);display:grid;gap:18px;align-items:center;position:relative;overflow:hidden}
@media(min-width:860px){.cta{grid-template-columns:1fr auto;padding:40px 44px}}
.cta h2{color:#fff;margin-bottom:6px}
.cta p{margin:0;max-width:56ch}
.risk{font-size:12.5px;line-height:1.6;color:var(--muted);background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:12px 14px;margin:0}
.site-footer{background:var(--ink);border-top:1px solid var(--line);color:var(--ink-muted);padding:48px 0 24px;font-size:13.5px}
.site-footer .brand{color:#fff}
.f-grid{display:grid;gap:26px}
@media(min-width:640px){.f-grid{grid-template-columns:1fr 1fr}}
@media(min-width:960px){.f-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.site-footer h4{color:#fff;font-size:13.5px;margin-bottom:10px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:0}
.site-footer li a,.site-footer p a{color:var(--ink-text);display:inline-block;padding:4px 0}
.site-footer li a:hover{color:#fff}
.f-bottom{border-top:1px solid var(--ink-line);margin-top:32px;padding-top:18px;display:grid;gap:10px;font-size:12px;line-height:1.6}
.notfound{text-align:center;padding:90px 0}
.notfound b{display:block;font-size:64px;color:var(--blue);line-height:1;margin-bottom:10px}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{.site-header,.topbar,.tabbar,.wa-float,.site-footer,.aside{display:none}}

/* ---------- v3 additions ---------- */
.hero{background:radial-gradient(900px 480px at 78% 30%,rgba(61,139,255,.16),transparent 65%),radial-gradient(600px 400px at 10% 100%,rgba(34,197,94,.07),transparent 60%),var(--ink);border-bottom:1px solid var(--line)}
.hero h1{font-size:clamp(2.1rem,5vw,3.5rem);letter-spacing:-.035em;max-width:14ch}
.terminal{box-shadow:0 40px 80px -30px rgba(0,0,0,.8),0 0 0 1px rgba(61,139,255,.08)}
.wa-float{position:fixed;right:16px;bottom:16px;z-index:45;width:52px;height:52px;border-radius:50%;background:var(--wa);display:grid;place-items:center;box-shadow:0 10px 24px -8px rgba(37,211,102,.7)}
.wa-float svg{width:28px;height:28px;fill:#fff}
.btn-wa{background:var(--wa);color:#04210F}.btn-wa:hover{background:#1FBE5A;color:#04210F}
.btn-wa svg{fill:currentColor;stroke:none}
.topbar .wa{color:var(--wa);font-weight:700}
.svc{display:grid;gap:14px}
@media(min-width:860px){.svc{grid-template-columns:1.1fr .9fr;align-items:center}}
.svc-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px}
.rate-row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px}
.rate-row:last-child{border-bottom:0}
.rate-row span{color:var(--muted)}
.prose table,.compare{background:var(--white)}
.prose th,.compare thead th{color:var(--text)}
input,select,textarea{color-scheme:dark}
.topbar span,.topbar a{white-space:nowrap}

/* =========================================================
   APP MODE — phones and small tablets (< 1040px menu, < 760px app UI)
   ========================================================= */
html{-webkit-tap-highlight-color:transparent}
.tabbar{display:none}
/* menu sheet (slides up from the bottom) */
.mobile-menu{position:fixed;left:0;right:0;bottom:0;z-index:70;max-height:82vh;overflow-y:auto;overscroll-behavior:contain;
  background:#0E1728;border:1px solid var(--line);border-bottom:0;border-radius:20px 20px 0 0;
  padding:8px 16px calc(18px + env(safe-area-inset-bottom));transform:translateY(105%);transition:transform .28s cubic-bezier(.2,.8,.2,1);visibility:hidden}
.mobile-menu.open{transform:translateY(0);visibility:visible}
.sheet-grip{width:40px;height:4px;border-radius:4px;background:#2A3B5C;margin:2px auto 10px}
.sheet-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.sheet-head b{font-size:17px;font-weight:800}
.sheet-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--line-2);color:var(--text);display:grid;place-items:center;cursor:pointer}
.sheet-close svg{width:16px;height:16px}
.sheet-links{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:14px}
.sheet-links a{display:flex;align-items:center;min-height:52px;padding:10px 14px;border-radius:12px;background:var(--line-2);border:1px solid var(--line);color:var(--text);font-weight:700;font-size:14px;text-decoration:none}
.sheet-links a:active{background:var(--blue-50);border-color:var(--blue)}
.sheet-wa{width:100%;height:48px;border-radius:12px}
.sheet-backdrop{position:fixed;inset:0;z-index:65;background:rgba(2,6,14,.62);backdrop-filter:blur(2px)}
.sheet-backdrop[hidden]{display:none}
body.menu-open{overflow:hidden}

@media(max-width:759px){
  body{font-size:15px;padding-bottom:calc(68px + env(safe-area-inset-bottom));overscroll-behavior-y:none}
  .container{padding:0 14px}
  /* compact app header */
  .topbar{display:none}
  .site-header{padding-top:env(safe-area-inset-top)}
  .nav{min-height:54px;gap:10px}
  .brand{font-size:17px}
  .nav-right .btn,.menu-btn{display:none}
  /* bottom tab bar */
  .tabbar{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:60;
    background:rgba(9,15,28,.97);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--line);
    padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
  .tabbar a,.tabbar button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-height:52px;
    background:none;border:0;color:var(--soft);font:700 10.5px/1 var(--font);text-decoration:none;cursor:pointer;border-radius:12px}
  .tabbar svg{width:22px;height:22px}
  .tabbar a[aria-current="page"],.tabbar button[aria-expanded="true"]{color:var(--blue)}
  .tabbar .tab-main{color:var(--text)}
  .tab-fab{width:44px;height:44px;margin-top:-20px;border-radius:14px;background:var(--blue);color:#fff;display:grid;place-items:center;
    box-shadow:0 8px 20px -6px rgba(61,139,255,.8),0 0 0 4px #090F1C}
  .tab-fab svg{width:22px;height:22px}
  .wa-float{bottom:calc(80px + env(safe-area-inset-bottom));right:12px;width:46px;height:46px}
  .wa-float svg{width:24px;height:24px}
  /* hero */
  .hero{padding:22px 0 26px}
  .hero .container{gap:22px}
  .hero h1{font-size:1.9rem;max-width:none;margin-bottom:.4em}
  .hero .sub{font-size:14.5px;margin-bottom:16px}
  .hero-status{font-size:12px;margin-bottom:12px}
  .hero .btn-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .hero .btn-row .btn{flex:none;height:48px;border-radius:12px;font-size:14px}
  .hero .btn-row .btn:first-child{grid-column:1/-1}
  .trust{gap:6px 14px;font-size:12px;margin-top:14px}
  .terminal{border-radius:16px}
  .term-head{padding:9px 12px}.term-head .tf span{padding:2px 5px}
  .term-body{padding:12px;gap:12px}
  .ring,.ring svg{width:64px;height:64px}.ring b{font-size:15px}
  .checks i{height:13px}
  .legend{font-size:10.5px;gap:3px 9px}
  .term-foot{font-size:10.5px;padding:8px 12px}
  /* sections become app panels */
  .section{padding:30px 0}
  .head{margin-bottom:16px}
  h2{font-size:1.3rem}
  .metrics{border-radius:16px}
  .metrics div{padding:14px}
  .metrics b{font-size:19px}
  .layers,.compare,.svc-card,.card,.steps li,.toc,.faq details,.aside .box,.risk,.callout{border-radius:14px}
  .layer{grid-template-columns:48px 1fr;padding:14px}
  .steps li{padding:14px 14px 14px 52px}
  .steps li::before{position:absolute;left:14px;top:14px;margin:0}
  /* swipeable guide cards */
  .guides{display:grid;grid-auto-flow:column;grid-auto-columns:78%;grid-template-columns:none;overflow-x:auto;scroll-snap-type:x mandatory;
    gap:10px;margin:0 -14px;padding:2px 14px 6px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .guides::-webkit-scrollbar{display:none}
  .guide{scroll-snap-align:start;border-radius:14px;min-height:118px}
  .head-row{margin-bottom:14px}
  .compare{font-size:13px}.compare th,.compare td{padding:10px}
  .cta{padding:22px 18px;border-radius:18px}
  .cta .btn-row{display:grid;grid-template-columns:1fr 1fr}
  .cta .btn-row .btn{height:46px;border-radius:12px}
  .cta .btn-row .btn:first-child{grid-column:1/-1}
  /* inner pages */
  .page-hero{padding:18px 0 22px}
  .page-hero h1{font-size:1.5rem}
  .page-hero .lead{font-size:14.5px}
  .crumbs{margin-bottom:8px}
  .byline{margin-top:10px}
  .layout{padding:20px 0 34px;gap:22px}
  .prose h2{font-size:1.2rem;margin-top:1.5em}
  .prose table{font-size:13px}
  .toc ol{columns:1}
  .aside .box.dark{display:none}
  .btn-row .btn{height:44px}
  .faq summary{padding:14px 26px 14px 0}
  /* footer: compact */
  .site-footer{padding:28px 0 18px;margin-bottom:0}
  .f-grid{grid-template-columns:1fr 1fr;gap:18px}
  .f-grid>div:first-child{grid-column:1/-1}
  .f-bottom{margin-top:20px}
  a:hover{text-decoration:none}
  .rate-row{gap:12px}.rate-row b{text-align:right}
  .svc .btn-row{display:grid;grid-template-columns:1fr 1fr}.svc .btn-row .btn{height:46px;border-radius:12px}
  .head-row .btn{display:none}
}
@media(max-width:359px){
  .hero h1{font-size:1.65rem}
  .tabbar a,.tabbar button{font-size:9.5px}
  .sheet-links{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){.mobile-menu{transition:none}}