:root{
  --bg:#020617;
  --bg-2:#071427;
  --panel:rgba(15,23,42,.82);
  --panel-2:rgba(8,19,38,.92);
  --border:rgba(255,255,255,.12);
  --muted:#a9b5c7;
  --text:#f8fafc;
  --gold:#facc15;
  --gold-2:#f59e0b;
  --cyan:#22d3ee;
  --green:#22c55e;
  --red:#ef4444;
  --shadow:0 24px 80px rgba(0,0,0,.45);
  --radius:26px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  font-family:Inter,Arial,Helvetica,sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at 10% 5%, rgba(250,204,21,.17), transparent 28%),
    radial-gradient(circle at 92% 15%, rgba(34,211,238,.18), transparent 28%),
    radial-gradient(circle at 45% 55%, rgba(34,197,94,.10), transparent 32%),
    linear-gradient(180deg,var(--bg-2) 0%, var(--bg) 55%, #000 100%);
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1160px, calc(100% - 32px));margin:0 auto}
.notice-bar{
  padding:10px 16px;
  text-align:center;
  color:#071427;
  font-weight:900;
  font-size:13px;
  background:linear-gradient(90deg,var(--gold),#fff7ad,var(--gold-2));
}
.site-header{
  position:sticky;top:0;z-index:50;
  border-bottom:1px solid var(--border);
  background:rgba(2,6,23,.78);
  backdrop-filter:blur(16px);
}
.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;min-width:max-content}
.brand-logo{width:48px;height:48px;border-radius:16px;object-fit:cover;box-shadow:0 0 38px rgba(250,204,21,.18)}
.brand-name{font-weight:1000;letter-spacing:-.45px;line-height:1.05;font-size:17px}
.brand-kicker{color:var(--muted);font-size:11px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:5px;font-size:13px;color:#dbeafe;font-weight:800}
.nav-links a{padding:10px 11px;border-radius:12px;color:#d7e3f4}
.nav-links a:hover,.nav-links a.active{background:rgba(255,255,255,.08);color:#fff}
.nav-cta{display:flex;gap:10px;align-items:center}
.btn,.btn-outline,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 17px;border-radius:999px;font-weight:1000;
  transition:.2s ease;cursor:pointer;border:1px solid transparent;text-align:center;
}
.btn{background:linear-gradient(135deg,var(--gold),var(--gold-2));color:#111827;box-shadow:0 14px 36px rgba(250,204,21,.2)}
.btn:hover{transform:translateY(-1px);box-shadow:0 18px 42px rgba(250,204,21,.29)}
.btn-outline{border-color:rgba(250,204,21,.45);color:#fff;background:rgba(250,204,21,.08)}
.btn-soft{background:rgba(255,255,255,.08);border-color:var(--border);color:#fff}
.menu-toggle{display:none;background:rgba(255,255,255,.08);border:1px solid var(--border);color:white;width:46px;height:46px;border-radius:16px;font-size:24px}
.hero{position:relative;padding:70px 0 44px;overflow:hidden}
.hero:before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:linear-gradient(90deg,rgba(2,6,23,.94) 0%,rgba(2,6,23,.75) 48%,rgba(2,6,23,.35) 100%),url('assets/hero/smart-ai-hero-wide-16x9.webp') center/cover no-repeat;
  opacity:.9;
}
.hero:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:120px;background:linear-gradient(180deg,transparent,var(--bg));z-index:-1}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#071427;background:linear-gradient(135deg,var(--gold),#fff1a8);font-weight:1000;font-size:12px;border-radius:999px;padding:8px 13px;margin-bottom:18px;letter-spacing:.06em;text-transform:uppercase}
h1{font-size:clamp(38px,6vw,72px);line-height:.95;letter-spacing:-2.8px;margin:0 0 18px}
.lead{font-size:clamp(16px,2.1vw,21px);line-height:1.65;color:#dbeafe;max-width:680px;margin:0 0 26px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;max-width:720px}
.stat{padding:16px;border:1px solid var(--border);background:rgba(15,23,42,.68);border-radius:20px;backdrop-filter:blur(12px)}
.stat strong{display:block;font-size:24px;color:var(--gold)}
.stat span{display:block;color:var(--muted);font-size:12px;font-weight:800;line-height:1.4;margin-top:4px}
.device-card{border:1px solid var(--border);background:linear-gradient(180deg,rgba(15,23,42,.75),rgba(2,6,23,.72));border-radius:36px;padding:14px;box-shadow:var(--shadow);position:relative;display:flex;flex-direction:column}
.device-card img{border-radius:26px;aspect-ratio:1/1;object-fit:cover}
.float-badge{position:static;align-self:center;margin:14px auto 2px;padding:14px 18px;border-radius:20px;background:rgba(2,6,23,.86);border:1px solid rgba(250,204,21,.38);box-shadow:0 18px 52px rgba(0,0,0,.34);font-weight:1000;text-align:center;width:min(86%,360px)}
.float-badge small{display:block;color:var(--muted);font-size:11px;margin-top:3px;font-weight:800}
section{padding:58px 0}
.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:24px}
.section-title{font-size:clamp(27px,4vw,44px);line-height:1.05;letter-spacing:-1.4px;margin:0}
.section-desc{color:var(--muted);line-height:1.7;max-width:680px;margin:10px 0 0}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{border:1px solid var(--border);background:var(--panel);border-radius:var(--radius);padding:24px;box-shadow:0 18px 70px rgba(0,0,0,.23);backdrop-filter:blur(16px)}
.card h3{margin:0 0 9px;font-size:22px;letter-spacing:-.4px}
.card p{color:var(--muted);line-height:1.65;margin:0}
.icon{width:52px;height:52px;display:grid;place-items:center;border-radius:18px;margin-bottom:16px;background:rgba(250,204,21,.12);border:1px solid rgba(250,204,21,.28);font-size:24px}
.feature-card{min-height:260px;position:relative;overflow:hidden}
.feature-card:after{content:"";position:absolute;right:-60px;top:-60px;width:160px;height:160px;border-radius:999px;background:rgba(34,211,238,.08)}
.dark-split{padding:0}
.split-panel{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--border);border-radius:36px;overflow:hidden;background:rgba(15,23,42,.76);box-shadow:var(--shadow)}
.split-media{min-height:420px;background:url('assets/hero/smart-ai-cover-wide-16x9.webp') center/cover no-repeat}
.split-content{padding:44px;display:flex;flex-direction:column;justify-content:center}
.check-list{display:grid;gap:12px;margin:20px 0 26px;padding:0;list-style:none}
.check-list li{display:flex;gap:10px;color:#dbeafe;line-height:1.55}
.check-list li:before{content:"✓";color:var(--green);font-weight:1000}
.pricing-card{position:relative;overflow:hidden}
.pricing-card.popular{border-color:rgba(250,204,21,.45);box-shadow:0 26px 90px rgba(250,204,21,.1)}
.price{font-size:40px;letter-spacing:-1.4px;font-weight:1000;color:#fff;margin:10px 0 6px}
.price span{font-size:14px;color:var(--muted);letter-spacing:0}
.tag{display:inline-flex;align-items:center;border-radius:999px;padding:6px 10px;background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.35);color:#bbf7d0;font-weight:1000;font-size:12px;margin-bottom:12px}
.gallery{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}
.gallery figure{margin:0;position:relative;border-radius:28px;overflow:hidden;border:1px solid var(--border);background:rgba(255,255,255,.05)}
.gallery img{width:100%;height:100%;object-fit:cover;min-height:260px}
.gallery figure:first-child{grid-row:span 2}
.gallery figcaption{position:absolute;left:14px;right:14px;bottom:14px;background:rgba(2,6,23,.78);border:1px solid var(--border);border-radius:18px;padding:12px;font-weight:1000;color:#fff;backdrop-filter:blur(12px)}
.cta-panel{padding:34px;border-radius:34px;background:linear-gradient(135deg,rgba(250,204,21,.14),rgba(34,211,238,.1),rgba(34,197,94,.12));border:1px solid rgba(250,204,21,.25);display:flex;align-items:center;justify-content:space-between;gap:22px;box-shadow:var(--shadow)}
.cta-panel h2{margin:0;font-size:clamp(25px,4vw,42px);letter-spacing:-1.2px}
.footer{padding:36px 0 42px;border-top:1px solid var(--border);background:rgba(0,0,0,.25);color:var(--muted);font-size:13px;line-height:1.7}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:24px}
.footer strong{color:#fff}
.page-hero{padding:64px 0 36px;border-bottom:1px solid var(--border);background:linear-gradient(180deg,rgba(15,23,42,.6),transparent)}
.page-hero h1{font-size:clamp(36px,5vw,60px)}
.form-panel{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-card label{display:block;font-weight:900;margin:14px 0 7px}
.input,.select,textarea{width:100%;border:1px solid var(--border);border-radius:16px;padding:14px 15px;background:rgba(255,255,255,.08);color:#fff;outline:0;font:inherit}
textarea{min-height:130px;resize:vertical}
.qr-card img{background:white;padding:12px;border-radius:24px;margin:0 auto 18px;max-width:260px}
.month-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.month-tabs span{border:1px solid var(--border);background:rgba(255,255,255,.06);padding:9px 13px;border-radius:999px;color:#dbeafe;font-weight:900;font-size:13px}
.disclaimer{font-size:12px;color:var(--muted);line-height:1.7;border-top:1px solid var(--border);padding-top:14px;margin-top:18px}
.calc-shell{width:min(680px,100%);margin:0 auto}
.calc-hero,.calc-card{border:1px solid var(--border);background:var(--panel);backdrop-filter:blur(18px);box-shadow:var(--shadow)}
.calc-hero{padding:24px;border-radius:30px;margin-bottom:16px}
.rate-panel{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;padding:16px;border-radius:22px;background:rgba(255,255,255,.06);border:1px solid var(--border)}
.small-label,.hint{color:var(--muted);font-size:13px;margin-bottom:4px}
.rate-value{font-size:32px;font-weight:1000;letter-spacing:-.6px}
.last-updated{grid-column:1/-1;color:var(--muted);font-size:12px;line-height:1.45}
.error{display:none;margin-top:12px;color:#fb923c;font-size:13px;line-height:1.45}
.calc-card{padding:20px;border-radius:26px;margin-bottom:16px}
.field{margin-bottom:16px}.field:last-child{margin-bottom:0}
.field label{display:block;margin-bottom:6px;font-size:14px;font-weight:900}
.input-wrap{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center}
.calc-card input{width:100%;min-height:54px;border:0;outline:none;border-radius:17px;padding:12px 14px;background:var(--gold);color:#111827;font-size:22px;font-weight:1000}
.unit{min-width:54px;color:var(--muted);font-size:13px;font-weight:900;text-align:right}
.result-row{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;padding:14px 0;border-bottom:1px solid var(--border)}
.result-row:last-child{border-bottom:0;padding-bottom:0}
.result-name{color:var(--muted);font-size:14px;font-weight:900;line-height:1.35}
.result-value{min-width:150px;text-align:right;font-size:22px;font-weight:1000;letter-spacing:-.3px}
.result-unit{display:block;margin-top:2px;color:var(--muted);font-size:11px;font-weight:900;letter-spacing:.4px}
.highlight{padding:12px 14px;border-radius:17px;background:var(--green);color:#052e16;box-shadow:0 12px 34px rgba(34,197,94,.2)}
.highlight .result-unit{color:rgba(5,46,22,.74)}
.formula{margin-top:14px;padding:14px;border-radius:18px;background:rgba(255,255,255,.05);border:1px solid var(--border);color:var(--muted);font-size:12px;line-height:1.55}
@media (max-width:1020px){
  .nav-links,.nav-cta{display:none}.menu-toggle{display:block}
  .mobile-open .nav-links{display:flex;position:absolute;top:76px;left:16px;right:16px;flex-direction:column;align-items:stretch;background:rgba(2,6,23,.96);border:1px solid var(--border);border-radius:22px;padding:12px;box-shadow:var(--shadow)}
  .hero-grid,.split-panel,.form-panel{grid-template-columns:1fr}
  .split-media{min-height:300px}.hero{padding-top:50px}.device-card{max-width:520px;margin:0 auto}.float-badge{width:min(88%,360px)}
  .section-head{display:block}.footer-grid{grid-template-columns:1fr 1fr}.gallery{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .container{width:min(100% - 24px,1160px)}.nav-wrap{height:70px}.brand-logo{width:44px;height:44px}.brand-name{font-size:15px}.brand-kicker{font-size:9px}
  .hero-stats,.grid-3,.grid-2,.footer-grid,.gallery{grid-template-columns:1fr}
  .gallery figure:first-child{grid-row:auto}.hero-actions,.cta-panel{display:grid}.cta-panel{padding:24px}.split-content{padding:26px}.card{padding:20px}.section-head{margin-bottom:18px}section{padding:42px 0}
  .result-value{min-width:126px;font-size:20px}.rate-panel{grid-template-columns:1fr}.rate-panel .btn{width:100%}.calc-card input{font-size:20px}
}