:root { --bg: #F8FAFC; --card: #FFFFFF; --line: #E2E8F0; --text: #0F172A; --muted: #475569; --blue: #2563EB; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; -webkit-font-smoothing: antialiased; }
.wrap { max-width: 820px; margin: 0 auto; padding: 0 16px; }
.top { background: var(--card); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; text-decoration: none; }
.mark { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 700; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 32px; margin: 32px 0 16px; }
h1 { font-size: 28px; line-height: 1.25; margin: 0 0 4px; }
h2 { font-size: 19px; margin: 28px 0 8px; }
.meta { color: var(--muted); margin: 0 0 20px; }
a { color: var(--blue); }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }
table { width: 100%; border-collapse: collapse; margin: 8px 0; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
th { background: var(--bg); font-weight: 600; }
.note { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.btn { display: inline-block; background: var(--blue); color: #fff; text-decoration: none; padding: 10px 20px; border-radius: 999px; font-weight: 600; }
.foot { color: var(--muted); font-size: 14px; padding: 8px 0 40px; }
.foot a { margin-left: 12px; }
@media (max-width: 600px) { .card { padding: 20px; margin-top: 16px; } h1 { font-size: 24px; } table, thead, tbody, tr, th, td { display: block; } thead { display: none; } td:first-child { font-weight: 600; border-bottom: 0; padding-bottom: 0; } }