:root{
  --ink:#131a2a; --ink-2:#3d4659; --muted:#6b7385;
  --bg:#ffffff; --bg-alt:#f5f6f2; --line:#e3e5df;
  --accent:#1f4fd8; --accent-2:#163ca8; --accent-soft:#e8eefc;
  --warm:#f2a93b; --warm-soft:#fff5e6;
  --ok:#1d7a4a; --err:#b42318;
  --radius:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}
.narrow-wrap{max-width:820px}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .6em;letter-spacing:-.015em}
h1{font-size:clamp(2rem,4.6vw,3.3rem);font-weight:800}
h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800}
h3{font-size:1.25rem;font-weight:700}
h4{font-size:1.05rem;font-weight:700;margin-top:1.4em}
p{margin:0 0 1em}
ul,ol{padding-left:1.2em;margin:0 0 1em}
li{margin-bottom:.45em}
.small{font-size:.92rem;color:var(--muted)}
.note{font-size:.92rem;color:var(--muted)}

/* Buttons */
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;font-weight:600;padding:.85em 1.4em;border-radius:10px;border:2px solid var(--accent);cursor:pointer;font:inherit;font-weight:600;text-align:center;transition:background .15s,transform .15s}
.btn:hover{background:var(--accent-2);border-color:var(--accent-2)}
.btn:disabled{opacity:.6;cursor:wait}
.btn-ghost{background:transparent;color:var(--accent)}
.btn-ghost:hover{background:var(--accent-soft);color:var(--accent-2)}
.btn-sm{padding:.5em 1em;font-size:.92rem}

/* Topbar */
.topbar{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.topbar-in{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{font-weight:800;font-size:1.35rem;text-decoration:none;color:var(--ink);letter-spacing:-.02em}
.logo span{color:var(--accent)}
.logo-light{color:#fff}
.logo-light span{color:#8fb0ff}
.nav{display:flex;align-items:center;gap:22px}
.nav a{text-decoration:none;color:var(--ink-2);font-weight:500;font-size:.95rem}
.nav a.btn{color:#fff}
@media (max-width:760px){.nav a:not(.btn){display:none}}

/* Hero */
.hero{padding:80px 0 64px;background:radial-gradient(900px 400px at 85% -10%,var(--accent-soft),transparent 70%),linear-gradient(#fff,#fff)}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.8rem;font-weight:700;color:var(--accent);margin-bottom:1em}
.hl{color:var(--accent)}
.lead{font-size:1.18rem;color:var(--ink-2);max-width:720px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 44px}
.proof{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:900px}
.proof li{border-left:3px solid var(--warm);padding:4px 0 4px 14px;margin:0}
.proof strong{display:block}
.proof span{font-size:.92rem;color:var(--muted)}
@media (max-width:760px){.hero{padding:48px 0 40px}.proof{grid-template-columns:1fr}}

/* Sections */
.section{padding:72px 0}
.section.alt{background:var(--bg-alt)}
.section.dark{background:var(--ink);color:#e8ebf2}
.section.dark h2{color:#fff}
.section.dark strong{color:#fff}
@media (max-width:760px){.section{padding:52px 0}}
.cols-2{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.cols-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
@media (max-width:860px){.cols-2,.cols-3{grid-template-columns:1fr;gap:18px}}
.sub{margin-top:1.8em}
.sub.first{margin-top:0}

/* Structure diagram */
.stack{max-width:560px;margin:10px 0 36px}
.stack-mods{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
.mod{border-radius:12px;padding:16px 18px;display:flex;flex-direction:column;gap:2px}
.mod strong{font-size:1.08rem}
.mod em{font-style:normal;font-size:.92rem;color:var(--ink-2)}
.mod .tag{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;color:var(--muted)}
.mod-a,.mod-b{background:var(--warm-soft);border:1.5px dashed var(--warm)}
.mod-base{background:var(--accent);color:#fff}
.mod-base em,.mod-base .tag{color:#dbe5ff}
.explain p{margin:0}

/* Plans */
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:24px 0 28px}
@media (max-width:1050px){.plans{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.plans{grid-template-columns:1fr}}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;display:flex;flex-direction:column;position:relative}
.plan h3{margin-bottom:.3em}
.plan .price{font-size:2.2rem;font-weight:800;letter-spacing:-.03em;margin:0 0 .2em;line-height:1.1}
.plan .price small{font-size:.9rem;font-weight:500;color:var(--muted);letter-spacing:0}
.plan .setup{font-size:.85rem;color:var(--muted);margin-bottom:1em}
.plan ul{list-style:none;padding:0;font-size:.95rem;flex:1}
.plan li{padding-left:22px;position:relative}
.plan li::before{content:"";position:absolute;left:2px;top:.55em;width:10px;height:6px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
.plan .warn{font-size:.85rem;background:var(--warm-soft);border-radius:8px;padding:10px 12px}
.plan .btn{margin-top:auto}
.plan-featured{border:2px solid var(--accent);box-shadow:0 12px 32px -18px rgba(31,79,216,.45)}
.badge{position:absolute;top:-12px;left:22px;background:var(--accent);color:#fff;font-size:.75rem;font-weight:700;padding:3px 10px;border-radius:99px;margin:0}
.rule{max-width:860px}

/* Tables */
.fulltable{margin-top:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:4px 18px}
.fulltable summary{cursor:pointer;font-weight:600;padding:14px 0;color:var(--accent)}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 1em}
.table-scroll.narrow{max-width:460px}
table{border-collapse:collapse;width:100%;font-size:.93rem;min-width:560px;background:#fff}
.table-scroll.narrow table{min-width:0}
th,td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
thead th{font-weight:700;background:var(--bg-alt)}
tbody th{font-weight:500;color:var(--ink-2)}

/* Detail blocks */
.detail{display:grid;grid-template-columns:260px 1fr;gap:32px;padding:32px 0;border-top:1px solid var(--line)}
.detail:first-of-type{border-top:0}
.detail-head h3{margin-bottom:.2em}
.price-inline{color:var(--accent);font-weight:700;margin:0}
.aside{background:var(--bg-alt);border-radius:10px;padding:14px 16px;font-size:.95rem}
@media (max-width:860px){.detail{grid-template-columns:1fr;gap:8px}}

/* Cards */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card p{margin:0}
.card-accent{border-color:var(--accent);background:var(--accent-soft)}

/* WhatsApp */
.checks{list-style:none;padding:0}
.checks li{padding-left:24px;position:relative}
.checks li::before{content:"";position:absolute;left:2px;top:.55em;width:10px;height:6px;border-left:2px solid var(--ok);border-bottom:2px solid var(--ok);transform:rotate(-45deg)}
blockquote{margin:1em 0 0;padding:14px 16px;border-left:3px solid var(--accent);background:var(--accent-soft);border-radius:0 10px 10px 0;font-size:.95rem}
.excl li{margin-bottom:.7em}

/* FAQ */
.faq details{border-bottom:1px solid var(--line);padding:4px 0}
.faq summary{cursor:pointer;font-weight:600;padding:14px 28px 14px 0;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:10px;font-size:1.4rem;color:var(--accent);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--ink-2)}

/* Steps */
.steps{list-style:none;padding:0;counter-reset:s;max-width:860px}
.steps li{counter-increment:s;position:relative;padding:0 0 22px 56px;margin:0}
.steps li::before{content:counter(s);position:absolute;left:0;top:-2px;width:38px;height:38px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;display:grid;place-items:center}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:48px;align-items:start}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr;gap:20px}}
.form{background:var(--bg-alt);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;gap:14px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:.9rem;font-weight:600;color:var(--ink-2)}
.form input,.form select,.form textarea{font:inherit;font-weight:400;font-size:1rem;padding:11px 12px;border:1px solid #cfd3cb;border-radius:9px;background:#fff;color:var(--ink);width:100%}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:560px){.row2{grid-template-columns:1fr}}
.form .consent{flex-direction:row;align-items:flex-start;gap:10px;font-weight:400;font-size:.88rem}
.form .consent input{width:auto;margin-top:4px}
.hp{position:absolute;left:-9999px}
.form-status{margin:0;font-size:.95rem}
.form-status.ok{color:var(--ok);font-weight:600}
.form-status.err{color:var(--err)}

/* Footer */
.footer{background:var(--ink);color:#aeb5c4;padding:44px 0}
.footer a{color:#dbe5ff}
.footer-in{display:grid;grid-template-columns:1fr 1.4fr;gap:32px}
.footer .small{color:#aeb5c4}
@media (max-width:760px){.footer-in{grid-template-columns:1fr}}

/* Legal pages */
.legal{padding:56px 0 72px}
.legal h1{font-size:2.1rem}
.legal h2{font-size:1.3rem;margin-top:1.8em}