:root { font-family: system-ui, "Microsoft YaHei", sans-serif; color: #192f40; background: #f4f7fa; line-height: 1.8; }
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #145fa7; text-underline-offset: 4px; }
a:focus-visible { outline: 3px solid #53a7eb; outline-offset: 5px; }
.site-top { display: flex; justify-content: space-between; gap: 20px; align-items: center; padding: 22px max(24px, calc((100% - 1100px)/2)); background: #fff; }
.site-top > a { font-weight: 700; color: #17354d; text-decoration: none; }
nav { display: flex; gap: 20px; flex-shrink: 0; }
.hero { padding: 75px max(24px, calc((100% - 1100px)/2)); color: #fff; background: linear-gradient(120deg, #071c2e, #124e75); }
.eyebrow { color: #8fc8ed; letter-spacing: .14em; font-size: 12px; }
h1 { font-size: clamp(28px, 4vw, 46px); line-height: 1.4; margin: 18px 0; }
.lead { max-width: 850px; color: #d0e1ee; font-size: 18px; }
.button { display: inline-block; margin-top: 16px; padding: 12px 24px; border-radius: 6px; background: #176bc0; color: #fff; text-decoration: none; }
.content { max-width: 1100px; margin: 28px auto; padding: 36px; border: 1px solid #e2eaf0; border-radius: 12px; background: #fff; }
h2 { font-size: 25px; margin: 0 0 18px; }
h3 { font-size: 18px; margin: 0 0 10px; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-bottom: 24px; }
.cards article { padding: 24px; border-radius: 8px; background: #f1f6fa; }
.faq { border-top: 1px solid #e2eaf0; padding: 24px 0 8px; }
.contact { border-left: 4px solid #176bc0; }
footer { text-align: center; padding: 32px 20px; font-size: 14px; color: #5d6b77; }
@media (max-width: 760px) { .site-top { flex-direction: column; align-items: flex-start; } .hero { padding-top: 42px; padding-bottom: 42px; } .content { margin: 16px; padding: 24px; } .cards { grid-template-columns: 1fr; } }