:root{--ink:#123036;--muted:#5d7478;--line:#dce6e7;--bg:#f4f7f7;--brand:#1f6f6b;--brand-dark:#15504d}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}
header{background:#fff;border-bottom:1px solid var(--line);padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;position:sticky;top:0;z-index:2}
.brand{color:var(--brand);font-weight:700;text-decoration:none;font-size:1.15rem}
.btn{display:inline-block;background:var(--brand);color:#fff;text-decoration:none;border-radius:999px;padding:10px 18px;font-weight:600}
.btn:hover{background:var(--brand-dark)}
.btn.big{padding:14px 26px;font-size:1.05rem;margin:8px 0 4px}
main{max-width:760px;margin:0 auto;padding:32px 24px 56px}
article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px 36px}
.eyebrow{color:var(--brand);font-size:.78rem;font-weight:700;letter-spacing:.08em;margin:0}
h1{font-size:2rem;margin:6px 0 14px;line-height:1.2}
h2{font-size:1.25rem;margin:32px 0 8px}
h3{font-size:1rem;margin:20px 0 4px}
.lead{font-size:1.1rem;color:#24444a}
p,li{color:#24444a}
ul,ol{padding-left:22px}
li{margin:6px 0}
a{color:var(--brand)}
.note{background:#f1f7f6;border-radius:12px;padding:14px 16px;font-size:.92rem;color:var(--muted);margin-top:28px}
footer{max-width:760px;margin:0 auto;padding:0 24px 48px;color:var(--muted);font-size:.9rem}
footer a{color:var(--muted)}
@media(max-width:560px){article{padding:24px 20px}h1{font-size:1.6rem}}