:root {
    --primary: #4F86E3;
    --black: #111111;
    --dark: #1C1C1C;
    --mid: #2B2B2B;
    --light: #F5F5F5;
    --white: #ffffff;
    --shadow: 0 16px 35px 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: #fff;
    line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
header, .site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255,255,255,.96);
    border-bottom: 1px solid rgba(17,17,17,.08);
    backdrop-filter: blur(10px);
}
.header-inner {
    width: min(1180px, calc(100% - 28px));
    margin: 0 auto;
    min-height: 72px;
    display: grid;
    grid-template-columns: 48px 1fr 48px;
    align-items: center;
    gap: 12px;
}
.logo { justify-self: center; display: inline-flex; align-items: center; }
.logo img { width: 138px; max-height: 52px; object-fit: contain; }
.mobile-menu-toggle {
    border: 0;
    background: var(--primary);
    color: #fff;
    width: 42px;
    height: 42px;
    border-radius: 14px;
    font-size: 22px;
    cursor: pointer;
}
.main-nav, .header-actions { display: none; }
.mobile-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 0 14px 14px;
}
.mobile-nav {
    display: none;
    padding: 0 14px 14px;
    background: #fff;
}
.nav-open .mobile-nav { display: grid; gap: 8px; }
.mobile-nav a {
    padding: 12px 14px;
    border-radius: 14px;
    background: var(--light);
    font-weight: 700;
}
.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), #1f5fbf);
    color: #fff;
    font-weight: 800;
    border: 0;
    box-shadow: 0 10px 22px rgba(79,134,227,.22);
}
.btn-alt { background: linear-gradient(135deg, #2B2B2B, var(--primary)); }
.btn-small { min-height: 40px; padding: 9px 18px; font-size: 14px; }
.container {
    width: min(1120px, calc(100% - 30px));
    margin: 0 auto;
}
section { padding: 58px 0; }
.hero, .banner {
    background:
      radial-gradient(circle at top right, rgba(79,134,227,.24), transparent 32%),
      linear-gradient(145deg, #ffffff 0%, #f4f8ff 56%, #eef4ff 100%);
}
.hero .container {
    display: grid;
    gap: 30px;
    align-items: center;
}
.hero h1 { font-size: clamp(34px, 7vw, 60px); line-height: 1.08; margin: 0 0 18px; }
.hero p { font-size: 17px; color: #333; margin: 0 0 18px; }
.hero-image {
    background: #fff;
    padding: 18px;
    border-radius: 28px;
    box-shadow: var(--shadow);
}
.tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0; }
.tag {
    background: rgba(79,134,227,.12);
    color: #193f86;
    border: 1px solid rgba(79,134,227,.25);
    border-radius: 999px;
    padding: 9px 13px;
    font-weight: 700;
    font-size: 14px;
}
h1, h2, h3 { line-height: 1.2; }
h2 { font-size: clamp(26px, 4vw, 38px); margin: 0 0 18px; }
.lead { color: #444; font-size: 17px; }
.grid {
    display: grid;
    gap: 18px;
}
.card {
    background: #fff;
    border: 1px solid rgba(17,17,17,.08);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
}
.card h3 { margin-top: 0; }
.notice {
    border-left: 5px solid var(--primary);
    background: #f8fbff;
    padding: 18px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.faq { display: grid; gap: 14px; }
.faq details {
    background: #fff;
    border: 1px solid rgba(17,17,17,.08);
    border-radius: 16px;
    padding: 16px 18px;
    box-shadow: 0 8px 18px rgba(17,17,17,.05);
}
.faq summary { cursor: pointer; font-weight: 800; }
.footer {
    background: var(--dark);
    color: #fff;
    padding-top: 42px;
}
.footer-grid { display: grid; gap: 24px; }
.footer a { display: block; color: #fff; opacity: .9; margin: 7px 0; }
.footer-logo img { width: 130px; margin-bottom: 14px; }
.age {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 54px;
    background: var(--primary);
    border-radius: 50%;
    color: #fff;
    font-weight: 900;
    font-size: 20px;
}
.footer-bottom {
    margin-top: 32px;
    padding: 16px;
    text-align: center;
    background: rgba(0,0,0,.24);
    font-size: 14px;
}
.inline-links a { color: var(--primary); font-weight: 800; margin-right: 12px; }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step::before {
    counter-increment: step;
    content: counter(step);
    display: inline-flex;
    width: 34px;
    height: 34px;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    margin-right: 10px;
    font-weight: 900;
}
@media (min-width: 768px) {
    .header-inner {
        grid-template-columns: auto 1fr auto;
        min-height: 82px;
    }
    .mobile-menu-toggle, .mobile-actions, .mobile-nav { display: none !important; }
    .logo { justify-self: start; }
    .logo img { width: 150px; }
    .main-nav {
        display: flex;
        justify-content: center;
        gap: 28px;
        font-weight: 800;
    }
    .main-nav a { padding: 10px 4px; }
    .main-nav a:hover { color: var(--primary); }
    .header-actions { display: flex; gap: 10px; justify-content: flex-end; }
    .hero .container { grid-template-columns: 1.05fr .95fr; }
    .grid.two { grid-template-columns: repeat(2, 1fr); }
    .grid.three { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1.2fr .8fr 1.2fr; }
}
@media (min-width: 1024px) {
    .header-inner { width: min(1220px, calc(100% - 64px)); }
    section { padding: 74px 0; }
    .hero { padding: 42px 0; }
    .logo img { width: 164px; }
    .header-actions .btn { padding-left: 24px; padding-right: 24px; }
}