:root{--b:#0b4f6c;--a:#e07a1f;--t:#1b2430;--m:#5b6673;--bg:#f6f8fa;--ok:#1d7a46}
*{box-sizing:border-box}body{margin:0;font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--t);background:#fff;padding-bottom:72px}
.wrap{max-width:860px;margin:0 auto;padding:0 18px}a{color:var(--b)}h1{font-size:1.9rem;line-height:1.2;margin:.6em 0 .3em}h2{font-size:1.35rem;margin-top:1.8em}h3{font-size:1.1rem}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:9}
.topbar{background:var(--b);color:#fff;font-size:.85rem;text-align:center;padding:6px 10px}
header.site{border-bottom:1px solid #e3e7eb}.hd{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;padding:12px 18px}
.logo{font-weight:800;font-size:1.25rem;text-decoration:none;color:var(--t)}.logo span{color:var(--a)}
header nav{display:flex;flex-wrap:wrap;gap:14px;flex:1;font-size:.95rem}header nav a{text-decoration:none}.lang{font-size:.9rem;border:1px solid var(--b);border-radius:6px;padding:3px 10px;text-decoration:none}
.bc{font-size:.85rem;color:var(--m);margin-top:14px}.meta{color:var(--m);font-size:.88rem}
.btn{display:inline-block;background:var(--a);color:#fff;font-weight:700;padding:12px 22px;border-radius:8px;text-decoration:none}.btn:hover,.btn:focus{background:#c3640f}.btn.alt{background:var(--b)}
.cta{background:var(--bg);border-left:4px solid var(--a);padding:16px 18px;margin:26px 0;border-radius:6px}.cta p{margin:0 0 10px}
.sticky{position:fixed;bottom:0;left:0;right:0;background:rgba(255,255,255,.96);border-top:1px solid #dde2e7;padding:10px;text-align:center;z-index:5}
.note{background:#fff8e6;border:1px solid #f0d58c;padding:12px 16px;border-radius:6px}.box{background:var(--bg);padding:14px 18px;border-radius:6px}
table{border-collapse:collapse;width:100%;font-size:.95rem;margin:12px 0}th,td{border:1px solid #d9dee3;padding:8px;text-align:left}th{background:var(--bg)}
.tw{overflow-x:auto}details{border:1px solid #e3e7eb;border-radius:6px;padding:10px 14px;margin:8px 0}summary{font-weight:600;cursor:pointer}
.resp{background:#eef6f1;border-radius:6px;padding:4px 18px 14px;margin-top:30px}.related ul{columns:2;padding-left:18px}
footer.site{background:#10202b;color:#cfd8df;margin-top:40px;padding:24px 0;font-size:.92rem}footer a{color:#fff}footer ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px 18px}.small{font-size:.8rem;color:var(--m)}footer .small{color:#9fb0bd}
.calc{background:var(--bg);padding:18px;border-radius:8px}.calc label{display:block;font-weight:600;margin-top:10px}.calc input,.calc select{font-size:1rem;padding:8px;width:100%;max-width:260px;border:1px solid #b9c2cb;border-radius:6px}.calc output{display:block;margin-top:16px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;padding:0;list-style:none}.grid li{border:1px solid #e3e7eb;border-radius:8px;padding:12px}.grid a{font-weight:600}
.hero{background:linear-gradient(135deg,#0b4f6c,#136f8f);color:#fff;border-radius:10px;padding:24px;margin:16px 0}.hero p{margin:.4em 0 1em}
.choose{text-align:center;padding-top:15vh}
@media(max-width:600px){h1{font-size:1.55rem}.related ul{columns:1}header nav{order:3;flex:1 1 100%;font-size:.88rem}}