:root{
  --red:#d71920; --red-d:#b01016; --ink:#16181d; --ink-2:#2a2d34; --text:#2f3440; --muted:#5d6472;
  --bg:#fff; --alt:#f4f5f7; --line:#e4e6ea; --radius:16px; --shadow:0 10px 30px rgba(22,24,29,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:inherit}
.container{width:min(1200px,100% - 2.5rem);margin-inline:auto}
.narrow{width:min(820px,100% - 2.5rem)}
h1,h2,h3{color:var(--ink);line-height:1.12;margin:0 0 .6em;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,5.2vw,3.9rem);font-weight:800}
h2{font-size:clamp(1.6rem,3.2vw,2.4rem);font-weight:800}
h3{font-size:1.15rem;font-weight:700}
p{margin:0 0 1em}
.accent{color:var(--red)}
.eyebrow{font-size:.78rem;letter-spacing:.2em;text-transform:uppercase;font-weight:600;color:var(--red);margin-bottom:1rem}
.eyebrow.light{color:#ff7076}
.lead{font-size:clamp(1rem,1.5vw,1.15rem);color:var(--muted);max-width:60ch}
.lead.light{color:#c9ccd3}
.muted{color:var(--muted)}
.ico{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.ico.big{width:40px;height:40px;color:var(--ink)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.7rem 1.3rem;border-radius:999px;font-weight:600;text-decoration:none;border:2px solid transparent;cursor:pointer;font:inherit;font-weight:600;transition:.2s}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-d);transform:translateY(-2px);box-shadow:0 8px 20px rgba(215,25,32,.3)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-lg{padding:.9rem 1.6rem}
.btn-sm{padding:.45rem 1rem;font-size:.9rem}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;font-weight:800;font-size:1.25rem;color:var(--ink)}
.brand b{color:var(--red)}
.menu{display:flex;align-items:center;gap:1.6rem}
.menu a:not(.btn){text-decoration:none;font-size:.95rem;font-weight:500;color:var(--ink-2)}
.menu a:not(.btn):hover{color:var(--red)}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;padding:10px}
.nav-toggle span{display:block;height:2px;background:var(--ink);margin:6px 0;transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* Hero */
.hero{padding:clamp(2.5rem,6vw,5rem) 0;background:radial-gradient(circle at 85% 20%,#f1f2f5 0,#fff 55%)}
.hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:3rem;align-items:center}
.hero-cta{display:flex;flex-wrap:wrap;gap:.8rem;margin:1.8rem 0}
.quote{font-family:'Caveat',cursive;font-size:1.45rem;line-height:1.3;color:var(--ink-2);margin:2rem 0 0;padding-left:1rem;border-left:3px solid var(--red);max-width:48ch}

.stack{display:flex;flex-direction:column;gap:10px;max-width:420px;margin-inline:auto;perspective:900px}
.block{display:flex;align-items:center;gap:1rem;padding:1.1rem 1.3rem;background:linear-gradient(180deg,#fff,#e9ebef);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);font-weight:600;color:var(--ink);font-size:.95rem;line-height:1.3;transition:transform .3s}
.block small{font-weight:500;color:var(--muted)}
.block:hover{transform:translateX(8px)}
.block:nth-child(2){margin-inline:8px}.block:nth-child(3){margin-inline:14px}.block:nth-child(4){margin-inline:20px}
.block-top{background:linear-gradient(180deg,#e32129,#b01016);color:#fff;border:0;justify-content:center;text-transform:uppercase;letter-spacing:.06em;font-size:.9rem;flex-direction:column;text-align:center;gap:.4rem;padding:1.6rem}
.block-top .ico{width:34px;height:34px}
.block-base{background:linear-gradient(180deg,#2f323a,#16181d);color:#fff;border:0}
.block-base small{color:#c9ccd3}

/* Strip */
.strip{background:var(--ink);color:#fff}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;padding:1.4rem 0;text-align:center}
.strip p{margin:0;font-size:.92rem;color:#c9ccd3}
.strip strong{color:#fff;font-size:1.15rem;display:block}

/* Sections */
.section{padding:clamp(3rem,7vw,6rem) 0}
.section.alt{background:var(--alt)}
.section.dark{background:var(--ink);color:#c9ccd3}
.section.dark h2{color:#fff}
.section-head{max-width:760px;margin-bottom:2.5rem}
.split{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}

.three{display:grid;grid-template-columns:repeat(3,1fr);gap:2.5rem}
.col h2{font-size:clamp(1.4rem,2.2vw,1.8rem)}
.alerts,.results,.checks{list-style:none;margin:0;padding:0}
.alerts li,.results li{display:flex;align-items:center;gap:.9rem;padding:.55rem 0}
.alerts li::before{content:"!";flex:none;width:28px;height:28px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font-weight:800;font-size:.85rem}
.results i{flex:none;width:44px;height:44px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center}
.results li{line-height:1.3}

.arch{display:flex;flex-direction:column;gap:.7rem;margin-top:1.2rem}
.arch-core,.arch-base{background:var(--ink-2);color:#fff;border-radius:10px;padding:.9rem 1.1rem;font-size:.95rem}
.arch small{display:block;color:#c9ccd3;font-size:.8rem}
.arch-mods{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem}
.arch-mods span{display:flex;flex-direction:column;align-items:center;gap:.3rem;padding:.8rem .3rem;background:var(--alt);border-radius:10px;font-size:.82rem;font-weight:600;color:var(--ink)}
.arch-mods .ico{color:var(--red);width:26px;height:26px}

.arq-steps{counter-reset:s;list-style:none;margin:0;padding:0;display:grid;gap:1rem}
.arq-steps li{counter-increment:s;display:flex;gap:1rem;align-items:center;padding:1.1rem 1.3rem;background:var(--ink-2);border-radius:12px;color:#e6e8ec}
.arq-steps li::before{content:counter(s);flex:none;width:36px;height:36px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font-weight:700}
.arq-steps b{color:#fff}

/* Steps */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;position:relative}
.steps li{background:#fff;padding:1.8rem 1.4rem;border-radius:var(--radius);box-shadow:var(--shadow);position:relative;transition:.25s}
.steps li:hover{transform:translateY(-6px)}
.steps .num{position:absolute;top:-16px;left:1.2rem;width:36px;height:36px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font-weight:700}
.steps .ico.big{margin-bottom:1rem}
.steps p{color:var(--muted);font-size:.95rem;margin:0}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.card{padding:1.8rem;border:1px solid var(--line);border-radius:var(--radius);border-top:4px solid var(--red);background:#fff;transition:.25s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.card p{color:var(--muted);margin:0;font-size:.96rem}

.trigger{margin:1.5rem 0 0;padding:1.2rem 1.4rem;background:#fff;border-left:4px solid var(--red);border-radius:8px;font-weight:600;color:var(--ink);font-size:1.1rem}
.checks li{position:relative;padding:.9rem 1rem .9rem 3rem;background:#fff;border-radius:12px;margin-bottom:.7rem;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.checks li::before{content:"✓";position:absolute;left:1rem;top:50%;transform:translateY(-50%);width:26px;height:26px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font-size:.85rem;font-weight:700}

.benefits{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem}
.benefit{padding:1.4rem;border-radius:var(--radius);background:var(--alt)}
.benefit h3{font-size:1.02rem;color:var(--red)}
.benefit p{margin:0;font-size:.93rem;color:var(--muted)}

/* FAQ */
.faq details{background:#fff;border-radius:12px;margin-bottom:.8rem;box-shadow:0 2px 8px rgba(0,0,0,.05);overflow:hidden}
.faq summary{cursor:pointer;padding:1.1rem 3rem 1.1rem 1.3rem;font-weight:600;color:var(--ink);list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:1.3rem;top:50%;transform:translateY(-50%);font-size:1.5rem;color:var(--red);transition:.2s}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 1.3rem 1.2rem;margin:0;color:var(--muted)}

/* CTA */
.cta{background:linear-gradient(135deg,#16181d,#2a2d34)}
.cta h2{color:#fff}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.contact-list{list-style:none;padding:0;margin:1.5rem 0 0;color:#c9ccd3}
.contact-list a{color:#fff;font-weight:600}
.form{background:#fff;padding:2rem;border-radius:var(--radius);display:grid;gap:1rem;box-shadow:0 20px 50px rgba(0,0,0,.35)}
.form label{display:grid;gap:.35rem;font-size:.88rem;font-weight:600;color:var(--ink)}
.form input,.form select,.form textarea{font:inherit;padding:.75rem .9rem;border:1.5px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);width:100%}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(215,25,32,.15)}
.form .invalid{border-color:var(--red)}
.form-msg{margin:0;font-size:.92rem;font-weight:600}
.form-msg.ok{color:#1a7f37}.form-msg.err{color:var(--red)}
.form button{justify-content:center}

.footer{background:#0e0f12;color:#9aa0ac;padding:2rem 0;font-size:.9rem}
.footer-grid{display:flex;flex-wrap:wrap;gap:1rem 2rem;justify-content:space-between;align-items:center}
.footer p{margin:0}
.brand-foot{color:#fff;font-weight:800;font-size:1.1rem}.brand-foot b{color:var(--red)}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
:focus-visible{outline:3px solid var(--red);outline-offset:3px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}html{scroll-behavior:auto}.reveal{opacity:1;transform:none}}

/* ---------- Tablet ---------- */
@media (max-width:1024px){
  .hero-grid,.split,.cta-grid{grid-template-columns:1fr}
  .three{grid-template-columns:1fr 1fr}
  .three .col:nth-child(3){grid-column:1/-1}
  .steps{grid-template-columns:repeat(2,1fr);gap:2rem 1.5rem}
  .cards{grid-template-columns:repeat(2,1fr)}
  .benefits{grid-template-columns:repeat(2,1fr)}
  .strip-grid{grid-template-columns:repeat(2,1fr)}
  .menu{gap:1rem}
}
/* ---------- Mobile ---------- */
@media (max-width:820px){
  .nav-toggle{display:block}
  .menu{position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:.5rem 1.25rem 1.25rem;border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(0,0,0,.08);display:none}
  .menu.open{display:flex}
  .menu a:not(.btn){padding:.9rem 0;border-bottom:1px solid var(--line)}
  .menu .btn{margin-top:1rem;justify-content:center}
}
@media (max-width:640px){
  .three,.steps,.cards,.benefits{grid-template-columns:1fr}
  .three .col:nth-child(3){grid-column:auto}
  .hero-cta .btn{width:100%;justify-content:center}
  .arch-mods{grid-template-columns:repeat(3,1fr)}
  .form{padding:1.4rem}
  .footer-grid{flex-direction:column;text-align:center}
  .quote{font-size:1.25rem}
}