:root{
  --navy:#0B1B3B; --navy2:#0f2350; --coral:#FF6B4A; --coral2:#FF8A5C;
  --teal:#16D2C2; --ink:#0B1B3B; --muted:#5A6B8C; --paper:#F6F8FC; --line:#E4EAF3;
  --radius:18px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Manrope',system-ui,Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.55;-webkit-font-smoothing:antialiased}
.wrap{max-width:920px;margin:0 auto;padding:0 20px}
a{color:inherit;text-decoration:none}

header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.logo{font-weight:800;font-size:19px;letter-spacing:-.3px}
.logo b{color:var(--coral)}
.nav-cta{background:var(--coral);color:#fff;font-weight:700;font-size:14px;padding:10px 18px;border-radius:999px;transition:.2s;white-space:nowrap}
.nav-cta:hover{background:#ff5436;transform:translateY(-1px)}

.hero{background:radial-gradient(120% 130% at 75% 0%,#13294f 0%,var(--navy) 55%,#071126 100%);color:#fff;padding:64px 0 76px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 1px 1px,rgba(22,210,194,.10) 1px,transparent 0);background-size:34px 34px;opacity:.6}
.hero .wrap{position:relative;z-index:2}
.pill{display:inline-flex;align-items:center;gap:8px;background:rgba(22,210,194,.12);border:1px solid rgba(22,210,194,.35);color:var(--teal);font-weight:600;font-size:13px;padding:7px 14px;border-radius:999px;letter-spacing:.2px}
.pill.warn{background:rgba(255,107,74,.12);border-color:rgba(255,107,74,.35);color:var(--coral2)}
h1{font-size:44px;line-height:1.08;font-weight:800;letter-spacing:-1px;margin:20px 0 16px}
h1 .accent{background:linear-gradient(90deg,var(--coral2),var(--coral));-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:19px;color:#c4d0e6;max-width:600px;margin-bottom:30px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;padding:16px 28px;border-radius:14px;transition:.2s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(90deg,var(--coral2),var(--coral));color:#fff;box-shadow:0 10px 30px -8px rgba(255,107,74,.6)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 38px -8px rgba(255,107,74,.7)}
.btn-ghost{color:#fff;border:1.5px solid rgba(255,255,255,.25)}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal)}
.hero-note{margin-top:18px;font-size:14px;color:#8fa0c2;display:flex;align-items:center;gap:8px;flex-wrap:wrap}

.strip{display:flex;gap:30px;flex-wrap:wrap;justify-content:center;padding:22px 0;border-bottom:1px solid var(--line);background:var(--paper)}
.strip div{font-size:14px;color:var(--muted);font-weight:600;display:flex;align-items:center;gap:8px}
.strip b{color:var(--ink)}

section{padding:60px 0}
.eyebrow{color:var(--coral);font-weight:700;font-size:13px;letter-spacing:1.5px;text-transform:uppercase}
h2{font-size:30px;font-weight:800;letter-spacing:-.6px;margin:10px 0 14px}
.sec-lede{color:var(--muted);font-size:17px;max-width:620px;margin-bottom:36px}

.steps{display:grid;gap:18px}
@media(min-width:720px){.steps{grid-template-columns:repeat(3,1fr)}.steps.four{grid-template-columns:repeat(2,1fr)}}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative;transition:.2s}
.step:hover{border-color:var(--teal);box-shadow:0 18px 40px -22px rgba(11,27,59,.4);transform:translateY(-3px)}
.step .num{width:42px;height:42px;border-radius:12px;background:var(--navy);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px}
.step .num.t\.coral{background:var(--coral)}
.step h3{font-size:18px;font-weight:700;margin-bottom:8px}
.step p{color:var(--muted);font-size:15px}

/* device tabs */
.devs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.dev-tab{padding:12px 20px;border-radius:12px;border:1px solid var(--line);font-weight:700;font-size:15px;cursor:pointer;background:#fff;transition:.2s}
.dev-tab:hover{border-color:var(--teal)}
.dev-block{background:var(--paper);border-radius:var(--radius);padding:28px;margin-bottom:16px}
.dev-block h3{font-size:20px;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.dev-block ol{margin-left:18px;color:var(--muted)}
.dev-block ol li{margin-bottom:10px;font-size:15px;padding-left:4px}
.dev-block ol li b{color:var(--ink)}

/* checklist (problem causes) */
.checks{display:grid;gap:12px;margin-bottom:10px}
@media(min-width:720px){.checks{grid-template-columns:repeat(2,1fr)}}
.chk{display:flex;gap:12px;align-items:flex-start;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:12px}
.chk .ic{font-size:18px;flex-shrink:0;margin-top:1px}
.chk b{font-size:15px}
.chk p{color:var(--muted);font-size:14px;margin-top:2px}

/* download buttons */
.dl-grid{display:grid;gap:14px;margin-top:26px}
@media(min-width:560px){.dl-grid{grid-template-columns:repeat(2,1fr)}}
.dl{display:flex;align-items:center;gap:14px;padding:18px 22px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:.2s}
.dl:hover{border-color:var(--coral);transform:translateY(-2px);box-shadow:0 16px 36px -22px rgba(11,27,59,.45)}
.dl .ic{font-size:28px}
.dl small{display:block;color:var(--muted);font-size:13px}
.dl b{font-size:16px}

.funnel{background:linear-gradient(120% 130% at 20% 0%,var(--navy) 0%,var(--navy2) 100%);border-radius:26px;padding:48px 40px;color:#fff;text-align:center;position:relative;overflow:hidden}
.funnel::before{content:"";position:absolute;width:280px;height:280px;background:radial-gradient(circle,rgba(255,107,74,.4),transparent 70%);top:-90px;right:-60px;filter:blur(10px)}
.funnel h2{font-size:32px;position:relative}
.funnel p{color:#c4d0e6;font-size:18px;max-width:520px;margin:14px auto 28px;position:relative}
.funnel .btn-primary{position:relative}
.funnel small{display:block;margin-top:16px;color:#8fa0c2;font-size:13px;position:relative}

.grid2{display:grid;gap:18px}
@media(min-width:720px){.grid2{grid-template-columns:repeat(2,1fr)}}
.ben{display:flex;gap:14px;align-items:flex-start;padding:20px;border-radius:14px;background:var(--paper)}
.ben .ic{font-size:22px;flex-shrink:0}
.ben h4{font-size:16px;font-weight:700;margin-bottom:4px}
.ben p{color:var(--muted);font-size:14px}

.faq details{border:1px solid var(--line);border-radius:14px;padding:0 22px;margin-bottom:12px;transition:.2s;background:#fff}
.faq details[open]{border-color:var(--teal);box-shadow:0 10px 30px -20px rgba(11,27,59,.4)}
.faq summary{font-weight:700;font-size:17px;padding:20px 0;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--coral);font-size:24px;font-weight:700;transition:.2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{color:var(--muted);padding:0 0 20px;font-size:15px}

footer{background:var(--navy);color:#8fa0c2;padding:44px 0;font-size:14px}
footer .wrap{display:flex;flex-direction:column;gap:18px}
.foot-cta{background:var(--coral);color:#fff;font-weight:700;padding:14px 26px;border-radius:12px;align-self:flex-start}
.disclaimer{border-top:1px solid #1d2f54;padding-top:18px;font-size:12px;color:#6b7ca0;line-height:1.6}
@media(max-width:560px){h1{font-size:33px}h2{font-size:25px}.funnel{padding:36px 22px}section{padding:46px 0}}