:root {
    --primary: #1678ff;
    --black: #111111;
    --dark: #1C1C1C;
    --mid: #2B2B2B;
    --light: #F5F5F5;
    --white: #ffffff;
    --shadow: 0 14px 36px rgba(17, 17, 17, .08);
    --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--black);
    background: #fafafa;
    line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
header, section, footer, nav { width: 100%; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }

.site-header {
    background: #ffffff;
    border-bottom: 1px solid rgba(17,17,17,.08);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 6px 18px rgba(17,17,17,.04);
}
.header-inner {
    display: grid;
    grid-template-columns: 44px 1fr 44px;
    align-items: center;
    min-height: 74px;
    gap: 10px;
}
.logo { justify-self: center; display: inline-flex; align-items: center; }
.logo img { width: 138px; max-height: 48px; object-fit: contain; }
.main-nav { display: none; }
.main-nav a, .mobile-nav a, .footer-nav a { font-weight: 700; color: var(--dark); }
.header-actions { display: none; }
.mobile-menu-toggle {
    appearance: none;
    border: 0;
    background: var(--primary);
    color: #fff;
    width: 42px;
    height: 42px;
    border-radius: 14px;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 8px 18px rgba(22,120,255,.24);
}
.mobile-nav {
    display: none;
    gap: 10px;
    padding: 14px 18px 18px;
    background: #fff;
    border-top: 1px solid rgba(17,17,17,.08);
    position: relative;
    z-index: 101;
}
.mobile-nav.is-open { display: grid; }
.mobile-nav a { padding: 12px 14px; background: var(--light); border-radius: 14px; }
.mobile-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    padding: 0 16px 16px;
    background: #fff;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 12px 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    background: linear-gradient(135deg, var(--primary), #0d53bf);
    color: #ffffff;
    font-weight: 800;
    letter-spacing: .01em;
    box-shadow: 0 12px 26px rgba(22,120,255,.25);
    transition: transform .2s ease, box-shadow .2s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 16px 30px rgba(22,120,255,.32); }
.btn-small { min-height: 40px; padding: 9px 18px; font-size: 14px; }
.btn-outline { background: var(--dark); border-color: rgba(255,255,255,.2); box-shadow: 0 10px 22px rgba(17,17,17,.14); }

.hero, .banner {
    background: radial-gradient(circle at 80% 10%, rgba(255,255,255,.32), transparent 28%), linear-gradient(135deg, var(--primary), #0f336d);
    color: #fff;
    padding: 56px 0;
}
.hero-grid { display: grid; gap: 28px; align-items: center; }
.hero h1 { font-size: clamp(32px, 8vw, 58px); line-height: 1.08; margin: 0 0 18px; }
.hero p { font-size: 18px; opacity: .95; margin: 0 0 22px; }
.hero-image {
    background: rgba(255,255,255,.14);
    border: 1px solid rgba(255,255,255,.22);
    border-radius: 28px;
    padding: 18px;
    box-shadow: var(--shadow);
}
.tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.tag {
    background: rgba(255,255,255,.16);
    border: 1px solid rgba(255,255,255,.24);
    border-radius: 999px;
    padding: 8px 12px;
    font-weight: 700;
    font-size: 14px;
}
section { padding: 42px 0; }
.section-title { margin: 0 0 18px; font-size: clamp(26px, 5vw, 40px); line-height: 1.15; }
.section-lead { color: #555; margin-top: -6px; max-width: 760px; }
.grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.card {
    background: #fff;
    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(--dark); }
.card p:last-child, .notice p:last-child { margin-bottom: 0; }
.notice {
    background: #fff;
    border: 1px solid rgba(22,120,255,.2);
    border-left: 6px solid var(--primary);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}
.faq { display: grid; gap: 16px; }
.faq-item {
    background: #fff;
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(17,17,17,.06);
}
.faq-item h2, .faq-item h3 { margin: 0 0 8px; }
.page-hero {
    background: var(--light);
    padding: 48px 0;
    border-bottom: 1px solid rgba(17,17,17,.06);
}
.page-hero h1 { margin: 0; font-size: clamp(30px, 7vw, 52px); line-height: 1.1; }
.link-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.inline-link { color: var(--primary); font-weight: 800; }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { counter-increment: step; position: relative; padding-left: 58px; }
.step:before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    background: var(--primary);
    color: #fff;
    border-radius: 999px;
    font-weight: 900;
}
.footer { background: var(--dark); color: #fff; padding: 42px 0; }
.footer-grid { display: grid; gap: 24px; }
.footer a { color: #fff; }
.footer-logo { font-size: 24px; font-weight: 900; }
.footer-nav { display: grid; gap: 10px; }
.footer-note { color: rgba(255,255,255,.82); }

@media (min-width: 768px) {
    .header-inner { min-height: 80px; display: flex; justify-content: space-between; gap: 24px; }
    .mobile-menu-toggle, .mobile-actions { display: none; }
    .logo { justify-self: start; flex: 0 0 auto; }
    .logo img { width: 150px; }
    .main-nav { display: flex; align-items: center; justify-content: center; gap: 24px; flex: 1 1 auto; }
    .header-actions { display: flex; align-items: center; gap: 10px; }
    .mobile-nav, .mobile-nav.is-open { display: none; }
    .hero-grid { grid-template-columns: 1.05fr .95fr; }
    .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1.3fr .7fr 1fr; }
}
@media (min-width: 1024px) {
    .container { width: min(1180px, calc(100% - 64px)); }
    .site-header .container { width: min(1220px, calc(100% - 72px)); }
    .main-nav { gap: 34px; }
    .hero, .banner { padding: 76px 0; }
    section { padding: 58px 0; }
    .grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}