:root {
    --primary: #ffea00;
    --black: #111111;
    --deep: #1C1C1C;
    --mid: #2B2B2B;
    --light: #F5F5F5;
    --text: #1d1d1f;
    --muted: #686868;
    --radius: 18px;
    --shadow: 0 14px 40px rgba(17, 17, 17, 0.10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: var(--light); color: var(--text); line-height: 1.65; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
header, .site-header { position: sticky; top: 0; z-index: 30; background: #ffffff; border-bottom: 1px solid rgba(17,17,17,.08); box-shadow: 0 4px 20px rgba(17,17,17,.05); }
.header-inner { display: none; }
.mobile-topbar { display: grid; grid-template-columns: 44px 1fr 44px; align-items: center; gap: 12px; padding: 12px 18px 8px; }
.logo { display: inline-flex; align-items: center; }
.logo img { width: 128px; height: auto; object-fit: contain; }
.mobile-logo { justify-content: center; }
.mobile-menu-toggle { width: 42px; height: 42px; border: 0; border-radius: 14px; background: var(--primary); color: #111; font-size: 24px; font-weight: 800; line-height: 1; cursor: pointer; box-shadow: 0 8px 18px rgba(0,0,0,.14); }
.mobile-spacer { width: 42px; height: 42px; }
.mobile-actions { display: flex; justify-content: center; gap: 10px; padding: 0 18px 12px; }
.mobile-nav { display: none; gap: 8px; padding: 8px 18px 16px; background: #fff; border-top: 1px solid rgba(17,17,17,.06); }
.mobile-nav.is-open { display: grid; }
.mobile-nav a { padding: 12px 14px; border-radius: 14px; background: var(--light); font-weight: 700; }
.main-nav { display: flex; align-items: center; gap: 28px; font-weight: 700; color: var(--deep); }
.main-nav a { padding: 10px 0; position: relative; }
.main-nav a:hover { color: #000; }
.header-actions { display: flex; align-items: center; gap: 10px; }
.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), #ffb800); color: #111; font-weight: 800; border: 0; box-shadow: 0 10px 24px rgba(0,0,0,.16); transition: transform .2s ease, box-shadow .2s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 16px 32px rgba(0,0,0,.18); }
.btn-small { min-height: 40px; padding: 9px 18px; font-size: 14px; }
.btn-soft { background: linear-gradient(135deg, #111111, #2B2B2B); color: #fff; }
.container { width: min(1120px, calc(100% - 36px)); margin: 0 auto; }
section { padding: 54px 0; }
.hero, .banner { background: radial-gradient(circle at top right, rgba(255,234,0,.32), transparent 32%), linear-gradient(135deg, #111111, #2B2B2B); color: #fff; padding: 58px 0; }
.hero-wrap { display: grid; gap: 28px; align-items: center; }
.hero h1 { margin: 0 0 16px; font-size: clamp(32px, 8vw, 62px); line-height: 1.08; letter-spacing: -1.5px; }
.hero p { color: rgba(255,255,255,.84); font-size: 17px; margin: 0 0 18px; }
.hero-image { background: rgba(255,255,255,.08); border-radius: 28px; padding: 24px; box-shadow: var(--shadow); }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0; padding: 0; list-style: none; }
.tag-list li, .tag { border: 1px solid rgba(255,255,255,.22); background: rgba(255,234,0,.16); color: #fff; border-radius: 999px; padding: 8px 12px; font-size: 14px; font-weight: 700; }
.kicker { display: inline-flex; border-radius: 999px; padding: 6px 12px; background: rgba(255,234,0,.18); color: var(--primary); font-weight: 800; margin-bottom: 14px; }
.section-title { margin: 0 0 14px; color: var(--black); font-size: clamp(26px, 4vw, 42px); line-height: 1.18; }
.section-lead { color: var(--muted); max-width: 760px; margin: 0 0 24px; }
.grid { display: grid; 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(--deep); line-height: 1.25; }
.card p { color: #4d4d4d; }
.notice { background: #fff9c7; border: 1px solid rgba(255,234,0,.65); border-left: 6px solid var(--primary); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow); }
.notice strong { color: var(--black); }
.faq { display: grid; gap: 14px; }
.faq details { background: #fff; border-radius: 16px; padding: 18px; border: 1px solid rgba(17,17,17,.08); box-shadow: 0 8px 24px rgba(17,17,17,.06); }
.faq summary { cursor: pointer; font-weight: 800; color: var(--black); }
.link-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.link-row a { color: #111; background: var(--primary); padding: 9px 13px; border-radius: 999px; font-weight: 800; }
.step-list { counter-reset: steps; display: grid; gap: 14px; padding: 0; list-style: none; }
.step-list li { counter-increment: steps; background: #fff; border-radius: 16px; padding: 18px 18px 18px 62px; position: relative; box-shadow: var(--shadow); }
.step-list li::before { content: counter(steps); position: absolute; left: 18px; top: 18px; width: 30px; height: 30px; border-radius: 50%; background: var(--primary); color: #111; display: grid; place-items: center; font-weight: 900; }
.footer { background: var(--deep); color: #fff; padding: 42px 0 24px; }
.footer-grid { display: grid; gap: 22px; }
.footer h2 { margin: 0 0 10px; }
.footer p { color: rgba(255,255,255,.78); }
.footer-nav { display: grid; gap: 10px; }
.footer-nav a { color: #fff; font-weight: 700; }
.footer-notice { background: rgba(255,255,255,.08); border-radius: 18px; padding: 18px; }
.footer-notice strong { display: inline-flex; background: var(--primary); color: #111; border-radius: 999px; padding: 6px 12px; margin-bottom: 8px; }
.copyright { color: rgba(255,255,255,.62); border-top: 1px solid rgba(255,255,255,.12); padding-top: 18px; margin-top: 24px; font-size: 14px; }
@media (min-width: 768px) {
    .mobile-topbar, .mobile-actions, .mobile-nav { display: none; }
    .header-inner { width: min(1180px, calc(100% - 48px)); margin: 0 auto; min-height: 76px; display: grid; grid-template-columns: 170px 1fr auto; align-items: center; gap: 24px; }
    .logo img { width: 142px; }
    .hero-wrap { grid-template-columns: 1.1fr .9fr; }
    .grid.two { grid-template-columns: repeat(2, 1fr); }
    .grid.three { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1.3fr .7fr 1.2fr; align-items: start; }
}
@media (min-width: 1024px) {
    .header-inner { width: min(1240px, calc(100% - 80px)); grid-template-columns: 190px 1fr auto; gap: 36px; }
    section { padding: 72px 0; }
    .hero { padding: 82px 0; }
    .main-nav { justify-content: center; }
    .card { padding: 30px; }
}