:root {
    --primary: #43acf2;
    --black: #111111;
    --dark: #1C1C1C;
    --mid: #2B2B2B;
    --light: #F5F5F5;
    --white: #ffffff;
    --shadow: 0 16px 45px rgba(17, 17, 17, 0.10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; color: var(--black); background: var(--light); line-height: 1.65; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
header, .site-header { background: var(--white); position: sticky; top: 0; z-index: 50; box-shadow: 0 8px 24px rgba(17,17,17,.08); }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.mobile-topbar { display: grid; grid-template-columns: 44px 1fr 44px; align-items: center; gap: 10px; padding: 12px 16px 8px; }
.mobile-menu-toggle { border: 0; background: var(--primary); color: var(--white); width: 42px; height: 42px; border-radius: 999px; font-size: 22px; cursor: pointer; line-height: 1; }
.mobile-logo { justify-self: center; }
.logo img { width: 132px; max-height: 52px; object-fit: contain; }
.mobile-spacer { width: 42px; height: 42px; }
.mobile-actions { display: flex; justify-content: center; gap: 10px; padding: 0 16px 12px; }
.mobile-nav { display: none; gap: 8px; padding: 10px 16px 16px; background: var(--white); border-top: 1px solid rgba(17,17,17,.08); }
.mobile-nav.is-open { display: grid; }
.mobile-nav a { padding: 12px 14px; border-radius: 14px; background: var(--light); font-weight: 700; }
.header-inner { display: none; }
.main-nav, nav { align-items: center; }
.main-nav a { font-weight: 700; color: var(--dark); padding: 10px 12px; border-radius: 999px; }
.main-nav a:hover { background: rgba(67,172,242,.12); color: var(--primary); }
.header-actions { display: flex; gap: 10px; align-items: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: linear-gradient(135deg, var(--primary), #1b82c8); color: var(--white); padding: 13px 22px; border-radius: 999px; font-weight: 800; border: 0; box-shadow: 0 10px 25px rgba(67,172,242,.28); transition: transform .2s ease, box-shadow .2s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(67,172,242,.34); }
.btn-small { padding: 10px 18px; font-size: 14px; }
.btn-secondary { background: linear-gradient(135deg, #2B2B2B, #111111); }
.hero, .banner { background: radial-gradient(circle at top left, rgba(67,172,242,.26), transparent 34%), linear-gradient(135deg, #ffffff 0%, #eaf7ff 100%); padding: 56px 0; }
.hero-grid { display: grid; gap: 28px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; color: var(--primary); background: rgba(67,172,242,.12); padding: 7px 12px; border-radius: 999px; font-weight: 800; font-size: 14px; }
h1 { font-size: clamp(32px, 7vw, 58px); line-height: 1.08; margin: 14px 0 16px; color: var(--black); letter-spacing: -1px; }
h2 { font-size: clamp(26px, 4vw, 38px); line-height: 1.18; margin: 0 0 14px; }
h3 { margin-top: 0; color: var(--dark); }
p { margin: 0 0 14px; }
.hero p { font-size: 17px; color: #333; }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0; }
.tag { background: var(--white); color: var(--dark); border: 1px solid rgba(67,172,242,.22); padding: 9px 12px; border-radius: 999px; font-size: 14px; font-weight: 700; }
.app-card { background: var(--white); border-radius: 28px; padding: 22px; box-shadow: var(--shadow); }
section { padding: 46px 0; }
.section-head { max-width: 760px; margin-bottom: 24px; }
.grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.card { background: var(--white); border-radius: 18px; padding: 24px; box-shadow: var(--shadow); border: 1px solid rgba(17,17,17,.06); }
.card.accent { border-top: 5px solid var(--primary); }
.notice { background: rgba(67,172,242,.12); border: 1px solid rgba(67,172,242,.25); border-left: 5px solid var(--primary); border-radius: 18px; padding: 18px; color: var(--dark); }
.faq { display: grid; gap: 14px; }
.faq-item { background: var(--white); border-radius: 18px; padding: 20px; box-shadow: var(--shadow); }
.faq-item h3 { margin-bottom: 8px; }
.content-page .hero { padding: 44px 0; }
ul.clean { padding-left: 20px; margin: 0; }
.step-list { counter-reset: step; display: grid; gap: 14px; padding: 0; list-style: none; }
.step-list li { counter-increment: step; background: var(--white); border-radius: 18px; padding: 18px 18px 18px 60px; position: relative; box-shadow: var(--shadow); }
.step-list li::before { content: counter(step); position: absolute; left: 18px; top: 18px; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--primary); color: var(--white); font-weight: 800; }
.inline-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.inline-links a { color: var(--primary); font-weight: 800; background: rgba(67,172,242,.12); padding: 8px 12px; border-radius: 999px; }
.footer { background: var(--dark); color: var(--white); padding: 44px 0; }
.footer-grid { display: grid; gap: 24px; }
.footer a { display: block; color: var(--white); margin: 8px 0; opacity: .9; }
.footer-logo img { width: 130px; margin-bottom: 12px; }
.footer-notice { background: rgba(255,255,255,.08); color: var(--white); border-color: rgba(255,255,255,.22); }
@media (min-width: 768px) {
    .mobile-topbar, .mobile-actions, .mobile-nav { display: none; }
    .header-inner { display: flex; align-items: center; justify-content: space-between; gap: 26px; width: min(1120px, calc(100% - 48px)); margin: 0 auto; padding: 14px 0; }
    .main-nav { display: flex; gap: 8px; flex: 1; justify-content: center; }
    .hero-grid { 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: 1.3fr .7fr 1fr; }
}
@media (min-width: 1024px) {
    .header-inner { width: min(1180px, calc(100% - 80px)); gap: 36px; }
    .logo img { width: 150px; }
    section { padding: 64px 0; }
    .hero, .banner { padding: 72px 0; }
    .card { padding: 28px; }
}