* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; background: #0d0d0d; color: #e5e5e5; line-height: 1.8; font-size: 16px; }
.container { max-width: 800px; margin: 0 auto; padding: 32px 24px 64px; }
header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 40px; padding-bottom: 24px; border-bottom: 1px solid #262626; }
header > a { display: inline-flex; min-height: 44px; align-items: center; text-decoration: none; font-weight: 700; }
h1 { font-size: clamp(30px, 5vw, 40px); line-height: 1.3; color: #fff; margin-bottom: 12px; }
h2 { font-size: 23px; line-height: 1.5; color: #81c784; margin: 36px 0 16px; }
h3 { font-size: 18px; color: #fff; margin: 20px 0 12px; }
p, li { margin-bottom: 12px; }
ul, ol { padding-left: 24px; margin-bottom: 16px; }
a { color: #81c784; text-underline-offset: 4px; }
strong { color: #fff; }
.updated, .subtitle { color: #a3a3a3; margin-bottom: 24px; }
.callout, .contact-card { background: #1a1a1a; border: 1px solid #333; border-radius: 12px; padding: 24px; margin: 24px 0; }
.callout p:last-child, .contact-card p:last-child { margin-bottom: 0; }
.contact-card .email { display: inline-flex; align-items: center; min-height: 44px; font-size: clamp(17px, 4vw, 22px); font-weight: 700; }
.faq { padding: 24px 0; border-bottom: 1px solid #262626; }
.faq h3 { margin-top: 0; }
footer { border-top: 1px solid #262626; padding: 40px 24px 24px; font-size: 14px; }
footer .inner { max-width: 1100px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.3fr; gap: 24px; }
footer h2 { color: #a3a3a3; font-size: 14px; margin: 0 0 12px; }
footer ul { list-style: none; padding: 0; }
footer li { margin: 0; }
footer a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; }
footer .logo { gap: 10px; color: #fff; font-size: 20px; font-weight: 700; }
footer .logo img { border-radius: 8px; }
.footer-brand p { margin-top: 12px; color: #a3a3a3; }
.footer-bottom { display: flex; flex-direction: column; gap: 8px; text-align: center; color: #a3a3a3; border-top: 1px solid #262626; padding-top: 24px; margin-top: 24px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .container { padding: 24px 20px 48px; } .footer-grid { grid-template-columns: 1fr; } .callout, .contact-card { padding: 20px; } }