:root {
    --primary: #43acf2;
    --black: #111111;
    --dark: #1C1C1C;
    --mid: #2B2B2B;
    --light: #F5F5F5;
    --white: #ffffff;
    --shadow: 0 18px 45px rgba(17, 17, 17, .12);
    --radius: 18px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: var(--light); color: var(--dark); line-height: 1.7; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
header, .site-header { background: var(--white); border-bottom: 1px solid rgba(17,17,17,.08); position: sticky; top: 0; z-index: 20; box-shadow: 0 8px 22px rgba(17,17,17,.06); }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
section { padding: 42px 0; }
.logo img { height: 46px; width: auto; object-fit: contain; }
.mobile-topbar { display: grid; grid-template-columns: 44px 1fr 44px; align-items: center; padding: 12px 16px 8px; }
.mobile-logo { justify-self: center; }
.mobile-menu-toggle { width: 42px; height: 42px; border: 0; border-radius: 14px; background: var(--primary); color: var(--white); font-size: 24px; line-height: 1; cursor: pointer; box-shadow: 0 8px 20px rgba(67,172,242,.25); }
.mobile-actions { display: flex; justify-content: center; gap: 10px; padding: 0 16px 12px; }
.mobile-nav { display: none; gap: 8px; padding: 12px 16px 18px; background: #fff; border-top: 1px solid rgba(17,17,17,.08); }
.mobile-nav.is-open { display: grid; }
.mobile-nav a { padding: 12px 14px; border-radius: 16px; background: var(--light); font-weight: 700; }
.header-inner { display: none; }
.main-nav, nav { align-items: center; }
.main-nav { display: flex; gap: 10px; justify-content: center; }
.main-nav a { padding: 10px 14px; border-radius: 999px; font-weight: 700; color: var(--dark); }
.main-nav a:hover { background: rgba(67,172,242,.12); }
.header-actions { display: flex; gap: 10px; justify-content: flex-end; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 13px 22px; border-radius: 999px; background: linear-gradient(135deg, var(--primary), #1678ff); color: #fff; font-weight: 800; box-shadow: 0 12px 28px rgba(67,172,242,.28); border: none; cursor: pointer; }
.btn-alt { background: linear-gradient(135deg, #2B2B2B, var(--primary)); }
.btn-small { padding: 10px 17px; font-size: 14px; }
.hero, .banner { background: radial-gradient(circle at top right, rgba(67,172,242,.35), transparent 35%), linear-gradient(135deg, #101824, #1C1C1C); color: var(--white); }
.hero-wrap { display: grid; gap: 24px; align-items: center; padding: 42px 0; }
.hero h1 { font-size: clamp(32px, 7vw, 58px); line-height: 1.08; margin: 0 0 18px; letter-spacing: -.02em; }
.hero p { color: rgba(255,255,255,.84); font-size: 18px; margin: 0 0 22px; }
.hero-tags { display: grid; gap: 10px; margin-top: 22px; }
.tag { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.16); border-radius: 999px; padding: 10px 14px; font-weight: 700; color: #fff; }
.hero-media { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); border-radius: 26px; padding: 18px; box-shadow: var(--shadow); }
.grid { display: grid; gap: 18px; }
.card { background: var(--white); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); border: 1px solid rgba(17,17,17,.06); }
.card h2, .card h3 { margin-top: 0; color: var(--black); line-height: 1.25; }
.card h2 { font-size: 28px; }
.card ul, .card ol { padding-left: 20px; }
.notice { background: rgba(67,172,242,.12); border-left: 5px solid var(--primary); border-radius: 18px; padding: 18px; margin: 20px 0; }
.faq { display: grid; gap: 14px; }
.faq-item { background: var(--white); border-radius: 18px; padding: 20px; box-shadow: var(--shadow); }
.faq-item h3 { margin: 0 0 8px; }
.footer { background: var(--dark); color: #fff; padding: 42px 0; }
.footer p { color: rgba(255,255,255,.78); }
.footer-grid { display: grid; gap: 22px; }
.footer-logo img { height: 42px; margin-bottom: 12px; }
.footer-links { display: grid; gap: 8px; }
.footer-links a { color: rgba(255,255,255,.86); }
.footer-notice { background: rgba(255,255,255,.08); border-radius: 18px; padding: 18px; }
.footer-notice strong { display: inline-flex; width: 54px; height: 54px; border-radius: 50%; align-items: center; justify-content: center; background: var(--primary); color: #fff; font-size: 20px; }
.inline-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.inline-links a { padding: 9px 13px; border-radius: 999px; background: var(--light); font-weight: 700; }
.page-hero { background: linear-gradient(135deg, rgba(67,172,242,.18), rgba(255,255,255,.95)); padding: 42px 0; }
.page-hero h1 { margin: 0 0 12px; font-size: clamp(30px, 6vw, 48px); line-height: 1.12; }
@media (min-width: 768px) {
    .mobile-topbar, .mobile-actions, .mobile-nav { display: none; }
    .header-inner { width: min(1120px, calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 190px 1fr 220px; gap: 18px; align-items: center; padding: 14px 0; }
    .hero-wrap { grid-template-columns: 1.1fr .9fr; padding: 62px 0; }
    .hero-tags { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1.4fr .8fr 1.2fr; }
}
@media (min-width: 1024px) {
    section { padding: 58px 0; }
    .header-inner { width: min(1180px, calc(100% - 56px)); grid-template-columns: 220px 1fr 250px; }
    .logo img { height: 54px; }
    .card { padding: 30px; }
}