:root {
    --primary: #1678ff;
    --black: #111111;
    --dark: #1C1C1C;
    --mid: #2B2B2B;
    --light: #F5F5F5;
    --white: #ffffff;
    --shadow: 0 18px 45px rgba(17, 17, 17, 0.08);
    --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; color: var(--black); background: #ffffff; line-height: 1.7; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
header, .site-header { width: 100%; }
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,0.96); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(17,17,17,0.08); }
.header-inner { display: none; }
.mobile-header-row { min-height: 68px; padding: 10px 18px; display: grid; grid-template-columns: 44px 1fr 44px; align-items: center; }
.logo img { width: 132px; max-height: 46px; object-fit: contain; }
.mobile-logo { display: flex; justify-content: center; align-items: center; }
.mobile-menu-toggle { width: 42px; height: 42px; border: 0; border-radius: 14px; background: var(--primary); color: #fff; font-size: 24px; line-height: 1; cursor: pointer; box-shadow: 0 10px 25px rgba(22,120,255,0.22); }
.mobile-actions { display: flex; justify-content: center; gap: 10px; padding: 0 18px 14px; }
.mobile-nav { display: none; padding: 12px 18px 18px; gap: 10px; background: #fff; border-top: 1px solid rgba(17,17,17,0.08); }
.mobile-nav.is-open { display: grid; }
.mobile-nav a { padding: 12px 14px; border-radius: 14px; background: var(--light); font-weight: 700; }
.main-nav, nav { align-items: center; }
.main-nav { display: flex; gap: 8px; justify-content: center; }
.main-nav a { padding: 10px 16px; border-radius: 999px; color: var(--mid); font-weight: 700; }
.main-nav a:hover { background: rgba(22,120,255,0.10); color: var(--primary); }
.header-actions { display: flex; justify-content: flex-end; gap: 10px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 12px 24px; border-radius: 999px; background: linear-gradient(135deg, var(--primary), #54a1ff); color: #fff; font-weight: 800; border: 0; box-shadow: 0 14px 30px rgba(22,120,255,0.24); cursor: pointer; }
.btn-small { min-height: 40px; padding: 10px 18px; font-size: 14px; }
.btn-soft { background: linear-gradient(135deg, #1C1C1C, #3b3b3b); box-shadow: 0 14px 30px rgba(0,0,0,0.16); }
.container { width: min(1120px, calc(100% - 36px)); margin: 0 auto; }
section { padding: 56px 0; }
.hero, .banner { background: radial-gradient(circle at top left, rgba(22,120,255,0.25), transparent 36%), linear-gradient(135deg, #111111, #1C1C1C 58%, #0a2a55); color: #fff; }
.hero-grid { display: grid; gap: 28px; align-items: center; padding: 54px 0; }
.hero h1 { margin: 0 0 18px; font-size: clamp(32px, 8vw, 62px); line-height: 1.05; letter-spacing: -1px; }
.hero p { color: rgba(255,255,255,0.86); font-size: 18px; }
.hero-image { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12); border-radius: 28px; padding: 22px; box-shadow: var(--shadow); }
.hero-tags, .tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0; }
.tag { display: inline-flex; padding: 8px 12px; border-radius: 999px; background: rgba(22,120,255,0.18); border: 1px solid rgba(255,255,255,0.16); color: #fff; font-weight: 700; font-size: 13px; }
.eyebrow { color: var(--primary); font-weight: 900; text-transform: uppercase; letter-spacing: .08em; }
h1, h2, h3 { line-height: 1.22; }
h2 { font-size: clamp(26px, 4vw, 40px); margin: 0 0 16px; }
h3 { margin-top: 0; }
.lead { font-size: 18px; color: #555; max-width: 820px; }
.grid { display: grid; gap: 18px; }
.grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
.card { background: #fff; border: 1px solid rgba(17,17,17,0.08); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.card.highlight { background: linear-gradient(135deg, rgba(22,120,255,0.12), #fff); }
.notice { border-left: 5px solid var(--primary); background: #f8fbff; border-radius: 16px; padding: 18px; margin: 20px 0; color: #333; }
.notice strong { color: var(--primary); }
.faq { display: grid; gap: 14px; }
.faq-item { border-radius: 16px; background: #fff; border: 1px solid rgba(17,17,17,0.08); padding: 20px; box-shadow: 0 10px 30px rgba(17,17,17,0.05); }
.faq-item h3 { margin-bottom: 8px; color: var(--dark); }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding-left: 62px; }
.step:before { counter-increment: step; content: counter(step); position: absolute; left: 18px; top: 18px; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 900; }
.link-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.link-list a { padding: 9px 13px; border-radius: 999px; background: var(--light); font-weight: 700; }
.footer { background: var(--dark); color: rgba(255,255,255,0.82); padding-top: 46px; }
.footer h3 { color: #fff; }
.footer a { display: block; color: rgba(255,255,255,0.86); margin: 8px 0; }
.footer-logo img { width: 140px; margin-bottom: 14px; }
.footer-grid { display: grid; gap: 24px; }
.footer-bottom { text-align: center; padding: 18px; margin-top: 36px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 14px; }
.simple-hero { background: linear-gradient(135deg, rgba(22,120,255,0.13), #fff); padding: 48px 0; }
.simple-hero h1 { font-size: clamp(30px, 6vw, 52px); margin: 0; }
.content p { color: #444; }
ul.clean { padding-left: 18px; }
@media (min-width: 768px) {
    .mobile-header-row, .mobile-actions, .mobile-nav { display: none; }
    .site-header { background: #fff; }
    .header-inner { display: grid; grid-template-columns: 180px 1fr 240px; gap: 18px; align-items: center; min-height: 78px; width: min(1120px, calc(100% - 44px)); margin: 0 auto; }
    .logo img { width: 150px; }
    .hero-grid { grid-template-columns: 1.1fr .9fr; padding: 72px 0; }
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
    .footer-grid { grid-template-columns: 1.5fr 1fr 1.2fr; }
}
@media (min-width: 1024px) {
    .header-inner { width: min(1180px, calc(100% - 72px)); grid-template-columns: 220px 1fr 260px; }
    section { padding: 74px 0; }
    .hero h1 { font-size: 64px; }
    .container { width: min(1180px, calc(100% - 72px)); }
}