*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-family: Inter, system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif; color: #0f172a; background: #f8fafc; line-height: 1.65; }
header { background: #0f766e; color: #fff; padding: 28px 16px 32px; text-align: center; }
header a.brand { color: #5eead4; font-weight: 800; letter-spacing: 2px; text-decoration: none; font-size: 15px; }
header h1 { font-size: clamp(24px, 5vw, 36px); margin: 12px auto 6px; max-width: 820px; line-height: 1.2; }
header p { margin: 0; color: #ccfbf1; font-size: 15px; }
main { max-width: 820px; margin: 0 auto; padding: 28px 16px 48px; }
h2 { font-size: 20px; margin: 32px 0 8px; color: #0f766e; }
h3 { font-size: 16px; margin: 20px 0 6px; }
ul { padding-left: 22px; }
li { margin: 4px 0; }
a { color: #0f766e; }
.note { background: #ecfeff; border: 1px solid #a5f3fc; border-radius: 12px; padding: 12px 16px; }
table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 8px 0; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid #e2e8f0; vertical-align: top; }
th { background: #f1f5f9; }
.table-wrap { overflow-x: auto; }
footer { border-top: 1px solid #e2e8f0; text-align: center; padding: 20px 16px; font-size: 14px; color: #64748b; }
footer a { margin: 0 6px; }