:root { --blue: #1f5fd6; --text: #1d2433; --muted: #5b6475; --bg: #f5f8ff; }
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; }
header { background: #fff; border-bottom: 1px solid #e3e8f2; }
header .wrap { display: flex; align-items: center; gap: 12px; padding: 14px 20px; }
header img { width: 40px; height: 40px; border-radius: 10px; }
header a { color: var(--text); text-decoration: none; font-weight: 600; }
nav { margin-left: auto; display: flex; gap: 18px; font-size: 15px; }
nav a { font-weight: 500; color: var(--muted); }
.wrap { max-width: 820px; margin: 0 auto; }
main { padding: 32px 20px 48px; }
.hero { text-align: center; padding: 24px 0; }
.hero img { width: 120px; height: 120px; border-radius: 26px; }
.hero h1 { margin: 16px 0 8px; font-size: 32px; }
.hero p { color: var(--muted); font-size: 18px; margin: 0 auto 24px; max-width: 560px; }
.btn { display: inline-block; background: var(--blue); color: #fff; padding: 12px 24px; border-radius: 10px; text-decoration: none; font-weight: 600; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 32px; }
.card { background: #fff; border: 1px solid #e3e8f2; border-radius: 12px; padding: 18px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
article { background: #fff; border: 1px solid #e3e8f2; border-radius: 12px; padding: 28px 32px; }
article h1 { margin-top: 0; }
article h2 { font-size: 20px; margin-top: 28px; }
.muted { color: var(--muted); }
footer { text-align: center; color: var(--muted); font-size: 14px; padding: 24px 20px 40px; }
footer a { color: var(--muted); }
a { color: var(--blue); }