:root {
    --primary: #31a0d2;
    --black: #111111;
    --dark: #1C1C1C;
    --mid: #2B2B2B;
    --light: #F5F5F5;
    --white: #ffffff;
    --shadow: 0 18px 45px rgba(17, 17, 17, .10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: var(--light); color: var(--black); line-height: 1.7; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
header, section, footer, nav { width: 100%; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header { background: var(--white); box-shadow: 0 8px 25px rgba(17,17,17,.08); position: sticky; top: 0; z-index: 20; }
.header-inner { min-height: 78px; display: grid; grid-template-columns: 44px 1fr; align-items: center; gap: 12px; padding: 10px 0; }
.logo { justify-self: center; display: inline-flex; align-items: center; }
.logo img { height: 48px; width: auto; object-fit: contain; }
.main-nav, .header-actions { display: none; }
.main-nav a, .mobile-nav a, .footer-nav a { font-weight: 700; color: var(--dark); }
.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; }
.mobile-nav { display: none; width: min(1120px, calc(100% - 32px)); margin: 0 auto 10px; padding: 14px; border-radius: 18px; background: #fff; box-shadow: var(--shadow); gap: 10px; }
.mobile-nav.is-open { display: grid; }
.mobile-nav a { padding: 11px 12px; border-radius: 12px; background: var(--light); }
.mobile-actions { display: flex; gap: 12px; justify-content: center; padding: 0 16px 14px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 12px 22px; border-radius: 999px; background: linear-gradient(135deg, var(--primary), #1a6f95); color: #fff; font-weight: 800; border: 0; box-shadow: 0 10px 24px rgba(49,160,210,.25); }
.btn-small { min-height: 40px; padding: 9px 18px; font-size: 14px; }
.btn-alt { background: linear-gradient(135deg, #1C1C1C, var(--primary)); }
.hero, .banner { background: radial-gradient(circle at top left, rgba(49,160,210,.24), transparent 34%), linear-gradient(135deg, #ffffff, #eef8fd); padding: 42px 0 30px; }
.hero-grid { display: grid; gap: 28px; align-items: center; }
.hero h1, .banner h1 { font-size: clamp(32px, 8vw, 58px); line-height: 1.08; margin: 0 0 16px; color: var(--dark); }
.hero p, .banner p { font-size: 17px; margin: 0 0 18px; color: #333; }
.hero-card { background: #fff; border-radius: 26px; padding: 18px; box-shadow: var(--shadow); }
.tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0; }
.tag { background: rgba(49,160,210,.14); color: #134961; padding: 8px 12px; border-radius: 999px; font-weight: 700; font-size: 13px; }
section { padding: 34px 0; }
.section-title { margin: 0 0 16px; font-size: clamp(24px, 5vw, 36px); color: var(--dark); }
.grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.card { background: #fff; border-radius: 20px; padding: 22px; box-shadow: var(--shadow); border: 1px solid rgba(17,17,17,.04); }
.card h2, .card h3 { margin-top: 0; color: var(--dark); }
.notice { background: #fff8e8; border-left: 5px solid var(--primary); border-radius: 18px; padding: 18px; box-shadow: var(--shadow); margin: 20px 0; }
.faq { display: grid; gap: 14px; }
.faq-item { background: #fff; border-radius: 18px; padding: 18px; box-shadow: var(--shadow); }
.faq-item h2, .faq-item h3 { margin: 0 0 8px; }
.inline-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.inline-links a { color: #0d6f9b; font-weight: 800; }
.footer { background: var(--dark); color: #fff; padding: 34px 0 18px; margin-top: 30px; }
.footer-grid { display: grid; gap: 24px; }
.footer h2 { margin-top: 0; }
.footer-nav { display: grid; gap: 10px; }
.footer-nav a { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.15); margin-top: 24px; padding-top: 14px; font-size: 14px; color: rgba(255,255,255,.78); }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding-left: 58px; }
.step:before { counter-increment: step; content: counter(step); position: absolute; left: 0; top: 14px; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 900; }
@media (min-width: 768px) {
    .header-inner { grid-template-columns: auto 1fr auto; min-height: 86px; }
    .mobile-menu-toggle, .mobile-nav, .mobile-actions { display: none !important; }
    .logo { justify-self: start; }
    .logo img { height: 54px; }
    .main-nav { display: flex; justify-content: center; align-items: center; gap: 26px; }
    .header-actions { display: flex; gap: 10px; justify-content: flex-end; }
    .hero-grid { grid-template-columns: 1.1fr .9fr; }
    .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1.3fr .7fr; }
}
@media (min-width: 1024px) {
    .header-inner { gap: 34px; }
    .main-nav { gap: 34px; }
    .grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    section { padding: 46px 0; }
}