:root{--navy:#0B2540;--ink:#1d2733;--teal:#0E7C73;--tealb:#19b3a3;--bg:#fff;--soft:#F2F6F8;--line:#d8e0e6;--mut:#4a5866}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;color:var(--navy);line-height:1.2}h1{font-size:clamp(2rem,5vw,3.2rem);margin:.4em 0}h2{font-size:1.6rem;margin:1.6em 0 .5em}h3{font-size:1.15rem;margin:0 0 .3em}
a{color:var(--teal)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #f5b700;outline-offset:2px}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}.sr{position:absolute;left:-9999px}.skip{position:absolute;left:-9999px;background:#fff;padding:8px;z-index:99}.skip:focus{left:8px;top:8px}
.hd{background:var(--navy);position:sticky;top:0;z-index:50}.hdin{display:flex;align-items:center;gap:20px;min-height:68px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font:700 1.4rem Georgia,serif}.brand b{color:var(--tealb)}.brand.light{margin-bottom:8px}
#nav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px}#nav a{display:block;color:#fff;text-decoration:none;padding:10px 12px;border-radius:6px}#nav a:hover{background:#17375a}
.dd{position:relative}#nav .dd>ul{display:none;position:absolute;top:100%;left:0;background:#fff;min-width:250px;flex-direction:column;box-shadow:0 8px 24px #0003;border-radius:8px;padding:6px}#nav .dd:hover>ul,#nav .dd:focus-within>ul{display:flex}#nav .dd>ul a{color:var(--ink)!important}#nav .dd>ul a:hover{background:var(--soft)!important}
.sf{margin-left:auto;display:flex;gap:4px}.sf input{padding:8px 10px;border:0;border-radius:6px;width:210px;font:inherit}.sf button{background:var(--tealb);border:0;border-radius:6px;padding:8px 12px;font-weight:600;color:#06222b;cursor:pointer}
.menu{display:none;background:#17375a;color:#fff;border:0;padding:9px 14px;border-radius:6px;font:inherit;margin-left:auto}
.hero{background:linear-gradient(135deg,#0B2540,#12395f 70%,#0f5c5a);color:#fff;padding:64px 0}.hero h1{color:#fff;max-width:14em}.lead{font-size:1.2rem;max-width:42em;color:inherit}.hero .lead{color:#dbe8f0}
.sbig{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:18px 0}.sbig input,.sbig select,.fld input,.filter select{padding:12px;border:1px solid #9fb0bd;border-radius:8px;font:inherit;min-width:0}.sbig input{flex:1;min-width:220px}
.btn{display:inline-block;background:var(--tealb);color:#04202a;font-weight:700;border:0;padding:12px 20px;border-radius:8px;text-decoration:none;cursor:pointer;font:inherit;font-weight:700}.btn:hover{background:#2ccbb9}.btn.alt{background:transparent;border:2px solid #fff;color:#fff}.btn.alt:hover{background:#ffffff22}
.cta{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.sec{padding-top:12px;padding-bottom:36px}.band{background:var(--soft)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}.card{display:block;border:1px solid var(--line);border-radius:10px;padding:18px;background:#fff;color:var(--ink);text-decoration:none;border-top:4px solid var(--teal)}a.card:hover{border-color:var(--navy);border-top-color:var(--navy)}.card p{margin:.3em 0;color:var(--mut)}.card[hidden]{display:none}
.prose{max-width:820px}.prose h2{border-top:1px solid var(--line);padding-top:.8em}.meta{color:var(--mut);font-size:.92rem}.badge{display:inline-block;background:#e3f4f2;color:#0a5b54;padding:3px 12px;border-radius:20px;font-weight:600;font-size:.9rem}
.note{background:#fff8e1;border-left:4px solid #f5b700;padding:12px 16px;margin:28px 0;border-radius:4px}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:14px 20px;margin:0 auto;max-width:1120px;font-size:.92rem}.crumbs li+li:before{content:"/";margin-right:6px;color:var(--mut)}
details{border:1px solid var(--line);border-radius:8px;padding:10px 16px;margin:8px 0;background:#fff}summary{cursor:pointer;font-weight:600}
.tool{border:1px solid var(--line);border-radius:12px;padding:20px;margin:24px 0}.tool h2{margin-top:0}.ff{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-bottom:14px}.fld label{display:block;font-weight:600;font-size:.92rem}.fld input{width:100%}
.out{margin-top:14px}.out .res{background:var(--soft);padding:14px;border-radius:8px}.out .err{background:#fdecea;color:#8a1c12;padding:12px;border-radius:8px}.out dl{display:grid;grid-template-columns:1fr auto;gap:4px 16px;margin:0}.out dt{color:var(--mut)}.out dd{margin:0;font-weight:700;text-align:right}.small{font-size:.88rem;color:var(--mut)}
.result{padding:14px 0;border-bottom:1px solid var(--line)}.result h3{margin:0}.result p{margin:.2em 0}
.ft{background:#0f1a26;color:#c6d1db;margin-top:40px;padding:40px 0 20px}.ft a{color:#9fe6dd}.ft h2{font-size:1rem;color:#fff;margin:0 0 8px}.ft ul{list-style:none;padding:0;margin:0}.ft li{margin:5px 0}.fg{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}.fine{font-size:.85rem;border-top:1px solid #2a3a4a;margin-top:24px;padding-top:14px}
@media(max-width:860px){.menu{display:block}#nav{display:none;width:100%}#nav.open{display:block}#nav ul{flex-direction:column}#nav .dd>ul,#nav .dd:hover>ul,#nav .dd:focus-within>ul{display:none}.sf{width:100%;margin:0 0 12px}.sf input{flex:1;width:auto}.fg{grid-template-columns:1fr}.hero{padding:40px 0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}