:root{--bg:#f7f9fb;--ink:#16242e;--muted:#5b6b76;--brand:#0f766e;--brand2:#0d9488;--accent:#f59e0b;--card:#fff;--line:#e3e9ee;--radius:16px;--maxw:1080px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:17px}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}img,svg{max-width:100%}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--ink)}.brand svg{width:30px;height:30px}
nav.main{display:flex;gap:22px;align-items:center}nav.main a{color:var(--muted);font-weight:600;font-size:.95rem}nav.main a:hover{color:var(--brand)}.menu-btn{display:none;background:none;border:0;font-size:1.6rem;cursor:pointer;color:var(--ink)}
main{padding:34px 0 60px}.crumbs{font-size:.85rem;color:var(--muted);margin-bottom:18px}.crumbs a{color:var(--muted)}article h1{font-size:2.1rem;line-height:1.2;margin:.2em 0 .3em;letter-spacing:-.01em}article h2{font-size:1.5rem;margin:1.6em 0 .5em;border-left:4px solid var(--brand);padding-left:12px}article h3{font-size:1.18rem;margin:1.3em 0 .4em}.lead{font-size:1.18rem;color:#334}.meta{color:var(--muted);font-size:.9rem;margin-bottom:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 1px 3px rgba(20,40,55,.04)}.grid{display:grid;gap:18px}.grid.c3{grid-template-columns:repeat(3,1fr)}.grid.c2{grid-template-columns:repeat(2,1fr)}.tile{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;transition:.15s;color:var(--ink)}.tile:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(15,118,110,.10);text-decoration:none;border-color:var(--brand2)}.tile h3{margin:.4em 0 .3em;color:var(--ink)}.tile p{color:var(--muted);margin:0;font-size:.95rem}
.tag{display:inline-block;background:#ecfdf5;color:var(--brand);font-size:.72rem;font-weight:700;padding:3px 10px;border-radius:999px;text-transform:uppercase;letter-spacing:.04em}.note{background:#fffbeb;border:1px solid #fde68a;border-radius:12px;padding:16px 18px;margin:22px 0;font-size:.96rem}.note strong{color:#b45309}.disclaimer{background:#fef2f2;border:1px solid #fecaca;border-radius:12px;padding:14px 18px;margin:24px 0;font-size:.9rem;color:#7f1d1d}.toc{background:#f0fdfa;border:1px solid #ccfbf1;border-radius:12px;padding:16px 20px;margin:20px 0}.toc strong{display:block;margin-bottom:6px}.toc ul{margin:0;padding-left:18px}.toc a{color:var(--brand)}
.faq dt{font-weight:700;margin-top:16px}.faq dd{margin:4px 0 0;color:#334}table{border-collapse:collapse;width:100%;margin:18px 0;font-size:.95rem}th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}th{background:#f0fdfa}.adslot{margin:26px 0;text-align:center;color:#9aa5ad;font-size:.8rem}.rel{margin-top:40px}.source-list{font-size:.95rem}.checklist li{margin:.5em 0}
.cookie{position:fixed;left:0;right:0;bottom:0;background:#16242e;color:#fff;padding:16px 20px;display:flex;gap:14px;align-items:center;justify-content:center;flex-wrap:wrap;z-index:99;font-size:.9rem}.cookie a{color:#5eead4}.cookie button{background:var(--brand2);color:#fff;border:0;padding:9px 20px;border-radius:999px;font-weight:700;cursor:pointer}
footer.site{background:#0f1b21;color:#aebcc4;padding:46px 0 30px;font-size:.92rem}footer.site .grid{grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}footer.site h4{color:#fff;font-size:.95rem;margin:0 0 12px}footer.site a{color:#aebcc4;display:block;padding:3px 0}footer.site a:hover{color:#5eead4}footer.site .copy{border-top:1px solid #233038;margin-top:30px;padding-top:18px;color:#7c8b94;font-size:.85rem}
@media(max-width:860px){nav.main{position:fixed;inset:64px 0 auto 0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:14px 20px;display:none}nav.main.open{display:flex}.menu-btn{display:block}}
@media(max-width:780px){.grid.c3,.grid.c2{grid-template-columns:1fr}footer.site .grid{grid-template-columns:1fr 1fr}table{display:block;overflow-x:auto}}
@media(max-width:680px){article h1{font-size:1.8rem}}