:root{--bg:#f4f7fb;--card:#fff;--ink:#0f2238;--muted:#55687c;--line:#d8e1ec;--navy:#0b1f3a;--acc:#0a8f7f;--accbg:#dff4f0;--hot:#e8870e}
@media (prefers-color-scheme:dark){:root{--bg:#0a1626;--card:#112238;--ink:#e8f0f8;--muted:#9fb2c6;--line:#243a54;--acc:#3fd0bb;--accbg:#0f3a38;--hot:#f3a13a}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:1rem/1.7 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
a{color:var(--acc)}
.w{max-width:1000px;margin:0 auto;padding:0 20px}
header{background:var(--navy);position:sticky;top:0;z-index:5}
header .w{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:6px 16px;padding-top:12px;padding-bottom:12px}
.logo{display:flex;align-items:center;gap:8px;color:#fff;font-weight:800;font-size:1.25rem;text-decoration:none}
.logo svg{color:#3fd0bb}
.logo span{color:#3fd0bb}
nav a{color:#c9d8e8;text-decoration:none;font-weight:600;margin-left:16px;font-size:.95rem}
nav a:hover{color:#fff}
.hero{background:linear-gradient(135deg,#0b1f3a 0%,#0f4a6e 100%);color:#fff;padding:56px 0 60px}
.hero .w{display:grid;grid-template-columns:1.4fr 1fr;gap:30px;align-items:center}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);line-height:1.1;margin:0 0 14px}
.hero p{color:#cfe0ef;font-size:1.1rem;margin:0 0 22px}
.hero svg{width:100%;max-width:230px;justify-self:center;color:#3fd0bb}
.btn{display:inline-block;background:var(--hot);color:#1a1000;padding:11px 20px;border-radius:8px;font-weight:700;text-decoration:none;margin:0 8px 8px 0}
.btn.o{background:transparent;color:#fff;border:1.5px solid #6f90b0}
h1{font-size:clamp(1.8rem,4.5vw,2.6rem);line-height:1.15;margin:30px 0 10px}
h2{font-size:1.5rem;margin:32px 0 8px}
h3{font-size:1.15rem;margin:22px 0 6px}
.lead{font-size:1.15rem;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;margin:18px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;border-top:4px solid var(--acc)}
.card h3{margin:6px 0}
.card p{color:var(--muted);margin:4px 0 0;font-size:.95rem}
.card h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover{color:var(--acc)}
.tag{display:inline-block;background:var(--accbg);color:var(--acc);font-weight:700;font-size:.78rem;padding:2px 10px;border-radius:99px}
.meta{color:var(--muted);font-size:.9rem}
.note{border-left:5px solid var(--hot);background:var(--card);padding:12px 16px;border-radius:0 10px 10px 0;margin:18px 0;border-top:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.tip{border-left-color:var(--acc)}
.strip{background:var(--card);border-bottom:1px solid var(--line)}
.strip .w{display:flex;flex-wrap:wrap;gap:8px 26px;padding-top:14px;padding-bottom:14px;color:var(--muted);font-weight:600;font-size:.95rem}
article{max-width:740px;padding-bottom:10px}
article ol li,article ul li{margin:6px 0}
.tw{overflow-x:auto}
table{border-collapse:collapse;width:100%;min-width:560px;background:var(--card);font-size:.93rem}
th,td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
th{background:var(--accbg)}
.crumb{font-size:.9rem;margin-top:20px;color:var(--muted)}
footer{background:var(--navy);color:#b7c9db;margin-top:46px;padding:30px 0;font-size:.92rem}
footer a{color:#e8f0f8;margin-right:14px}
footer p{margin:6px 0}
:focus-visible{outline:3px solid var(--hot);outline-offset:2px}
@media(max-width:760px){.hero .w{grid-template-columns:1fr}.hero svg{display:none}nav a{margin:0 12px 0 0}}