* { box-sizing: border-box; }
:root { --primary: #14bfed; --black: #111111; --dark: #1C1C1C; --mid: #2B2B2B; --light: #F5F5F5; --white: #ffffff; --muted: #666666; --line: rgba(17,17,17,.08); --shadow: 0 18px 45px rgba(17,17,17,.08); }
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%; height: auto; display: block; }
header, .site-header { background: linear-gradient(135deg, var(--primary), #0b8fb4); color: var(--white); position: sticky; top: 0; z-index: 20; box-shadow: 0 8px 24px rgba(17,17,17,.12); }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .4px; }
.logo img { width: 44px; height: 44px; object-fit: contain; border-radius: 12px; background: rgba(255,255,255,.18); padding: 4px; }
nav, .desktop-nav { display: none; align-items: center; gap: 22px; font-weight: 700; }
nav a, .desktop-nav a, .mobile-nav a { opacity: .95; }
nav a:hover, .desktop-nav a:hover, .mobile-nav a:hover { opacity: 1; text-decoration: underline; text-underline-offset: 5px; }
.mobile-nav { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.14); border-top: 1px solid rgba(255,255,255,.22); }
.mobile-nav a { text-align: center; padding: 11px 6px; font-size: 14px; }
.hero, .banner { background: radial-gradient(circle at top right, rgba(20,191,237,.28), transparent 32%), linear-gradient(180deg, #ffffff, #eefbff); padding: 48px 0; }
.banner-grid { display: grid; gap: 28px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px; background: rgba(20,191,237,.12); color: #087d9d; border-radius: 999px; font-size: 13px; font-weight: 800; margin-bottom: 14px; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 14px; }
h1 { font-size: clamp(34px, 8vw, 64px); letter-spacing: -1.6px; }
h2 { font-size: clamp(25px, 5vw, 38px); letter-spacing: -.6px; }
h3 { font-size: 20px; }
p { margin: 0 0 14px; color: #333333; }
section { padding: 42px 0; }
.section-head { max-width: 760px; margin-bottom: 22px; }
.grid { display: grid; gap: 18px; }
.grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
.card { background: var(--white); border: 1px solid var(--line); border-radius: 20px; padding: 22px; box-shadow: var(--shadow); }
.card p:last-child { margin-bottom: 0; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 12px 20px; border-radius: 999px; background: var(--primary); color: var(--white); font-weight: 800; border: 0; box-shadow: 0 12px 24px rgba(20,191,237,.25); transition: transform .2s ease, box-shadow .2s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 18px 32px rgba(20,191,237,.32); }
.header-btn { background: var(--white); color: #087d9d; display: none; }
.tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0; }
.tag { border-radius: 999px; padding: 9px 12px; background: var(--white); border: 1px solid rgba(20,191,237,.25); color: #087d9d; font-weight: 700; font-size: 14px; }
.hero-card { padding: 16px; border-radius: 28px; background: var(--white); box-shadow: var(--shadow); }
.hero-card img { border-radius: 22px; width: 100%; object-fit: cover; }
.notice { background: #eafbff; border: 1px solid rgba(20,191,237,.35); border-left: 6px solid var(--primary); border-radius: 18px; padding: 18px; color: #174553; }
.notice p { color: #174553; margin-bottom: 0; }
.faq { display: grid; gap: 14px; }
.faq-item { background: var(--white); border: 1px solid var(--line); border-radius: 18px; padding: 18px; box-shadow: 0 10px 26px rgba(17,17,17,.05); }
.faq-item h3 { font-size: 18px; margin-bottom: 8px; }
.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: 2px; width: 38px; height: 38px; border-radius: 14px; background: var(--primary); color: var(--white); display: grid; place-items: center; font-weight: 800; }
.link-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.link-row a { color: #087d9d; font-weight: 800; }
.footer { background: linear-gradient(135deg, #0b8fb4, var(--primary)); color: var(--white); padding: 42px 0 18px; }
.footer p, .footer a { color: rgba(255,255,255,.88); }
.footer-grid { display: grid; gap: 24px; }
.footer h2, .footer h3 { color: var(--white); }
.footer a { display: block; margin: 7px 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.22); margin-top: 28px; padding-top: 16px; font-size: 14px; color: rgba(255,255,255,.9); }
@media (min-width: 768px) {
    .desktop-nav { display: flex; }
    .mobile-nav { display: none; }
    .header-btn { display: inline-flex; }
    .banner-grid { grid-template-columns: 1.1fr .9fr; }
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1.4fr .8fr 1fr 1fr; }
}
@media (min-width: 1024px) {
    .hero, .banner { padding: 72px 0; }
    section { padding: 56px 0; }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
    .card { padding: 28px; }
}