:root{
  --bg:#f6f8fb; --surface:#ffffff; --ink:#0f1b2d; --muted:#64748b;
  --line:#e6ebf2; --brand:#2d83a6; --brand-d:#246a87; --brand-soft:#e9f4f9;
  --accent:#5bb0d4; --warn:#f59e0b; --shadow:0 10px 30px -12px rgba(15,27,45,.18);
  --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Inter',system-ui,Segoe UI,Arial;color:var(--ink);
  background:var(--bg);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
.narrow{max-width:760px}
.muted{color:var(--muted)}
h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.02em}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;font-weight:600;border:none;cursor:pointer;
  padding:11px 18px;border-radius:11px;transition:transform .12s,background .15s,box-shadow .15s;
  box-shadow:0 6px 16px -8px rgba(45,131,166,.55)}
.btn:hover{background:var(--brand-d);transform:translateY(-1px)}
.btn-lg{padding:14px 26px;font-size:16px}
.btn-sm{padding:8px 14px;font-size:14px}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line);box-shadow:none}
.btn-ghost:hover{background:#fff;border-color:#cfd8e3}
.btn-light{background:#fff;color:var(--brand-d);box-shadow:none}
.btn-light:hover{background:#eaf4f9}
.buy[disabled]{opacity:.55;cursor:not-allowed;transform:none}

/* nav */
.nav{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.85);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800}
.brand-mark{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;
  background:var(--brand);color:#fff;font-size:16px}
.brand-name{font-size:18px;letter-spacing:-.02em}
.nav-links{display:flex;gap:22px;margin-left:14px}
.nav-links a{color:var(--muted);font-weight:500;font-size:15px}
.nav-links a:hover{color:var(--ink)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:16px}
.lang{display:flex;gap:6px;font-size:13px;color:var(--muted);font-weight:600}
.lang a.on{color:var(--brand)}
.lang a:hover{color:var(--ink)}

/* hero */
.hero{background:
  radial-gradient(900px 400px at 85% -10%,var(--brand-soft),transparent 60%),
  linear-gradient(180deg,#fff,var(--bg))}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:42px;align-items:center;
  padding:72px 0 64px}
.pill{display:inline-block;background:var(--brand-soft);color:var(--brand-d);
  font-weight:600;font-size:13px;padding:6px 12px;border-radius:999px;margin-bottom:18px}
.hero h1{font-size:44px;font-weight:800;margin-bottom:16px}
.lead{font-size:18px;color:var(--muted);margin:0 0 26px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.trust{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;
  margin-top:26px;font-size:14px;color:var(--muted)}
.trust span{display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.hero-card{display:flex;justify-content:center}
.mock{width:100%;max-width:360px;background:var(--surface);border:1px solid var(--line);
  border-radius:20px;padding:22px;box-shadow:var(--shadow);
  animation:floaty 4.5s ease-in-out infinite;will-change:transform}
@keyframes floaty{
  0%,100%{transform:translateY(0) scale(1)}
  50%{transform:translateY(-16px) scale(1.035)}
}
@media(prefers-reduced-motion:reduce){.mock{animation:none}}
.mock-top{display:flex;gap:6px;margin-bottom:18px}
.mock-top span{width:10px;height:10px;border-radius:50%;background:#e2e8f0}
.mock-row{display:flex;align-items:center;gap:12px;margin:12px 0;font-size:13px;font-weight:600}
.mock-bar{height:12px;border-radius:7px;background:var(--brand);width:var(--w);flex:none;min-width:40px}
.mock-bar.alt{background:var(--accent)} .mock-bar.warn{background:var(--warn)}
.mock-row b{margin-left:auto;color:var(--muted);font-weight:600}
.mock-foot{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted)}

/* sections */
.section{padding:64px 0}
.alt-bg{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{text-align:center;max-width:640px;margin:0 auto 36px}
.section-head h2{font-size:30px;margin-bottom:8px}

/* product grid + cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:22px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .14s,box-shadow .14s,border-color .14s;display:block}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d6e2ec}
.card-vis{position:relative;height:140px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-soft),#e0f2fe)}
.emoji{font-size:52px}
.ribbon{position:absolute;top:12px;left:12px;background:var(--ink);color:#fff;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px}
.card-body{padding:16px 18px}
.card-body h3{font-size:17px;margin-bottom:5px}
.card-body p{font-size:14px;margin:0 0 14px}
.card-foot{display:flex;align-items:center;justify-content:space-between}
.price{font-weight:800;color:var(--brand-d);font-size:18px}
.fmt{font-size:12px;color:var(--muted)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px;text-align:center}
.step-ico{font-size:30px;margin-bottom:8px}
.step h3{font-size:17px;margin-bottom:6px}

/* cta band */
.cta-band{background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:46px 22px;flex-wrap:wrap}
.cta-band h2{font-size:26px} .cta-band p{margin:6px 0 0;opacity:.9}

/* product page */
.back{color:var(--muted);font-weight:500;font-size:14px}
.product{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;margin-top:20px}
.product-vis{position:relative;border-radius:20px;min-height:340px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-soft),#e0f2fe);border:1px solid var(--line)}
.emoji-lg{font-size:96px}
.product-info h1{font-size:32px;margin-bottom:10px}
.buy-row{display:flex;align-items:center;gap:16px;margin:22px 0 16px}
.price-lg{font-size:30px;font-weight:800;color:var(--brand-d)}
.fmt-tag{font-size:13px;color:var(--muted);background:var(--bg);border:1px solid var(--line);
  padding:5px 11px;border-radius:999px}
.secure{font-size:13px;margin-top:12px}
.inside{margin-top:30px;border-top:1px solid var(--line);padding-top:22px}
.inside h3{font-size:18px;margin-bottom:12px}
.inside ul{margin:0;padding:0;list-style:none}
.inside li{position:relative;padding:8px 0 8px 30px;border-bottom:1px solid var(--line)}
.inside li::before{content:"✓";position:absolute;left:0;top:8px;color:var(--brand);
  font-weight:800;background:var(--brand-soft);width:20px;height:20px;border-radius:50%;
  display:grid;place-items:center;font-size:12px}

/* footer */
.footer{background:var(--surface);border-top:1px solid var(--line);margin-top:20px;padding:48px 0 26px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}
.footer h4{font-size:14px;margin-bottom:12px}
.footer a{display:block;color:var(--muted);font-size:14px;padding:3px 0}
.footer a:hover{color:var(--ink)}
.footer .brand{margin-bottom:10px}
.copyright{margin-top:30px;padding-top:18px;border-top:1px solid var(--line);font-size:13px}

@media(max-width:860px){
  .hero-inner{grid-template-columns:1fr;padding:48px 0}
  .hero h1{font-size:34px}
  .hero-card{order:-1}
  .product{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
}

/* ===== Immersive sea-blue hero (header + hero blend, fades to light) ===== */
.nav{background:#0f3a50;backdrop-filter:none;border-bottom:1px solid rgba(255,255,255,.08)}
.nav .brand-name{color:#fff}
.nav .brand-mark{background:#fff;color:var(--brand-d)}
.nav-links a{color:rgba(255,255,255,.72)}
.nav-links a:hover{color:#fff}
.lang{color:rgba(255,255,255,.65)}
.lang a.on,.lang a:hover{color:#fff}
.nav .btn{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.35);box-shadow:none}
.nav .btn:hover{background:rgba(255,255,255,.24)}

.hero{position:relative;
  background:
    radial-gradient(820px 380px at 78% 16%, rgba(130,195,228,.40), transparent 62%),
    linear-gradient(180deg,#0f3a50 0%,#1c6182 33%,#2d83a6 57%,#7cb4d2 82%,var(--bg) 100%);
}
.hero .pill{background:rgba(255,255,255,.16);color:#fff;backdrop-filter:blur(4px)}
.hero h1{color:#fff}
.hero .lead{color:rgba(255,255,255,.86)}
.hero .trust{color:rgba(255,255,255,.82)}
.hero .btn{background:#fff;color:var(--brand-d);box-shadow:0 8px 22px -10px rgba(0,0,0,.5)}
.hero .btn:hover{background:#eef6fb}
.hero .btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.5)}
.hero .btn-ghost:hover{background:rgba(255,255,255,.18)}

/* ===== Buy form (product page checkout) ===== */
.buy-form{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:4px}
.buy-form input{flex:1;min-width:210px;padding:13px 15px;border:1px solid var(--line);
  border-radius:11px;font-size:15px;font-family:inherit;background:#fbfdff}
.buy-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.buymsg{font-size:13.5px;margin:10px 0 0;color:var(--brand-d);font-weight:500}
.buymsg.muted{color:var(--muted)}

/* ===== Thank-you / payment success page ===== */
.ty{text-align:center;padding:24px 0}
.ty-icon{font-size:58px;line-height:1;margin-bottom:8px}
.ty h1{font-size:30px;margin-bottom:6px}
.ty-status{font-weight:700;font-size:18px;margin:2px 0 10px}
.ty-status.ok{color:var(--brand-d)}
.ty-status.pend{color:#b45309}
.ty .lead{margin:8px auto 22px;max-width:440px}
.ty-order{font-size:13px;margin-top:20px}
.ty .back{display:inline-block;margin-top:24px;color:var(--muted);font-weight:500}
.ty .back:hover{color:var(--ink)}

/* ===== Legal / about pages ===== */
.legal h1{font-size:30px;margin-bottom:18px}
.legal h3{font-size:17px;margin:26px 0 8px;color:var(--ink)}
.legal p{color:#42536b;margin:0 0 12px;line-height:1.7}
.legal ul{margin:0 0 12px;padding-left:20px;color:#42536b;line-height:1.7}
.legal li{margin:5px 0}
.legal a{color:var(--brand-d);font-weight:600;text-decoration:underline}
.legal-upd{font-size:13px;color:var(--muted);margin-bottom:18px}