:root { --ink: #182534; --muted: #5f6d79; --blue: #237fbd; --blue-dark: #176597; --surface: #f3f7fa; --line: #dbe5ec; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.65; background: #fff; }
a { color: var(--blue-dark); }
.container { width: min(1120px, 90%); margin: 0 auto; }
.narrow { max-width: 760px; }
.site-nav { border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); }
.nav-inner, .footer-inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 24px; }
.site-nav a { margin-left: 22px; text-decoration: none; font-weight: 650; }
.site-nav .brand { margin-left: 0; color: var(--ink); font-size: 1.35rem; }
.hero { background: linear-gradient(145deg, #f8fbfd 0%, #eaf5fc 100%); }
.header-layout { display: grid; grid-template-columns: 1.25fr .75fr; align-items: center; gap: 64px; padding: 72px 0; }
h1, h2, h3 { line-height: 1.18; }
h1 { margin: 10px 0 22px; font-size: clamp(2.5rem, 6vw, 4.6rem); letter-spacing: -.045em; }
h2 { margin: 0 0 28px; font-size: clamp(1.8rem, 4vw, 2.6rem); letter-spacing: -.025em; }
h3 { margin: 0 0 8px; }
.eyebrow { margin: 0; color: var(--blue-dark); font-weight: 750; text-transform: uppercase; letter-spacing: .08em; font-size: .82rem; }
.lead { max-width: 720px; margin: 0 0 28px; color: var(--muted); font-size: 1.2rem; }
.fine-print { margin-top: 14px; color: var(--muted); font-size: .9rem; }
.header-video { display: flex; justify-content: center; }
.header-video video { width: min(100%, 320px); max-height: 610px; border-radius: 22px; box-shadow: 0 20px 55px rgba(28,58,81,.2); object-fit: cover; }
.cta-button { display: inline-block; padding: 13px 22px; border-radius: 9px; color: #fff; background: var(--blue); text-decoration: none; font-weight: 750; }
.cta-button:hover, .cta-button:focus-visible { background: var(--blue-dark); }
.section { padding: 76px 0; }
.section h2 { text-align: center; }
.section-alt { background: var(--surface); }
.features-grid, .guide-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.guide-grid { grid-template-columns: repeat(3, 1fr); }
.card { padding: 26px; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: 0 8px 28px rgba(26,55,76,.06); }
.card p { margin: 0; color: var(--muted); }
.guide-link { color: var(--ink); text-decoration: none; }
.guide-link:hover, .guide-link:focus-visible { border-color: var(--blue); transform: translateY(-2px); }
.steps { margin: 0; padding-left: 25px; }
.steps li { padding: 9px 0 9px 8px; }
.faq h3 { margin-top: 28px; }
.faq p { color: var(--muted); }
.final-cta { text-align: center; }
.guide-page { padding: 72px 0; }
.guide-page h1 { font-size: clamp(2.4rem, 6vw, 4rem); }
.article-steps { margin: 48px 0; }
.article-steps section { display: flex; gap: 20px; padding: 26px 0; border-top: 1px solid var(--line); }
.article-steps h2, .answer-box h2 { margin: 0 0 8px; text-align: left; font-size: 1.5rem; }
.article-steps p { margin: 0; }
.step-number { flex: 0 0 38px; width: 38px; height: 38px; border-radius: 50%; color: #fff; background: var(--blue); text-align: center; line-height: 38px; font-weight: 750; }
.answer-box { margin: 40px 0; padding: 26px; border-radius: 14px; background: var(--surface); }
.answer-box p { margin: 0; }
.center { text-align: center; }
.related { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); }
.privacy-header { padding: 64px 0 30px; background: var(--surface); }
.privacy-header h1 { font-size: clamp(2.4rem, 6vw, 4rem); }
.privacy-content { padding: 44px 0 70px; }
.privacy-content h2 { margin: 32px 0 8px; font-size: 1.45rem; }
footer { padding: 22px 0; color: #dbe5ec; background: var(--ink); }
footer p { margin: 0; }
footer a { margin-left: 18px; color: #fff; }
@media (max-width: 760px) {
  .header-layout, .features-grid, .guide-grid { grid-template-columns: 1fr; }
  .header-layout { gap: 44px; padding: 52px 0; }
  .section, .guide-page { padding: 54px 0; }
  .nav-inner div a:first-child { display: none; }
  .footer-inner { flex-direction: column; justify-content: center; padding: 18px 0; gap: 5px; }
}