:root{--navy:#0f2440;--ink:#1a2740;--muted:#5c6a80;--line:#e6ebf3;--blue:#1666e8;--blue-d:#0f4fc0;
--green:#0f9d63;--green-d:#0b7d4f;--bg:#f4f7fb;--card:#fff;--gold:#fff4d6;--sh:0 6px 24px rgba(15,36,64,.07);}
*{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:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:820px;margin:0 auto;padding:0 20px}
.wide{max-width:1120px}
h1,h2,h3{line-height:1.25;color:var(--navy)}
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
header.site .row{max-width:1120px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--navy)}
.brand .dot{width:28px;height:28px;border-radius:8px;background:var(--blue);color:#fff;display:inline-flex;align-items:center;justify-content:center}
header nav a{color:var(--muted);font-weight:600;font-size:14px;margin-left:20px}
header nav a:hover{color:var(--navy);text-decoration:none}
.cta-top{background:var(--green);color:#fff!important;padding:9px 15px;border-radius:9px}
.hero{background:linear-gradient(135deg,var(--navy),#1d3c66);color:#fff;padding:40px 0 34px}
.hero .wrap{max-width:820px}
.hero h1{color:#fff;font-size:30px;margin:0 0 10px;letter-spacing:-.4px}
.hero p{color:#d7e0f0;font-size:17px;margin:0}
.meta{color:#b9c6de;font-size:13px;margin-top:12px}
article{padding:30px 0 10px}
article p,article ul,article ol{font-size:16.5px;color:#26324a}
article h2{font-size:23px;margin:30px 0 10px}
article h3{font-size:18px;margin:22px 0 6px}
article ul,article ol{padding-left:22px}article li{margin:6px 0}
blockquote{margin:18px 0;padding:14px 18px;background:#eef4ff;border-left:4px solid var(--blue);border-radius:8px;color:#243a63}
.callout{background:var(--gold);border:1px solid #f4e2a8;border-radius:12px;padding:16px 18px;margin:20px 0;color:#5b4708}
.tldr{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin:6px 0 20px;box-shadow:var(--sh)}
.tldr b{color:var(--navy)}
.ctabox{background:linear-gradient(135deg,var(--green),var(--green-d));color:#fff;border-radius:16px;padding:24px;margin:28px 0;text-align:center}
.ctabox h3{color:#fff;margin:0 0 6px;font-size:20px}
.ctabox p{color:#e7fff3;margin:0 0 14px}
.btn{display:inline-block;background:#fff;color:var(--green-d)!important;font-weight:800;padding:13px 22px;border-radius:11px;font-size:15px}
.btn:hover{text-decoration:none;filter:brightness(.97)}
.btn.blue{background:var(--blue);color:#fff!important}
table.data{width:100%;border-collapse:collapse;font-size:14.5px;margin:16px 0}
table.data th,table.data td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left}
table.data th{color:var(--muted);font-size:12.5px;text-transform:uppercase;letter-spacing:.3px}
table.data td.num,table.data th.num{text-align:right}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin:20px 0}
.tile{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;box-shadow:var(--sh);color:var(--ink)}
.tile:hover{text-decoration:none;border-color:var(--blue)}
.tile b{color:var(--navy);display:block;font-size:16px}
.tile span{color:var(--muted);font-size:13px}
.related{border-top:1px solid var(--line);margin-top:30px;padding-top:18px}
.related a{display:block;margin:6px 0;font-weight:600}
.breadcrumb{font-size:13px;color:var(--muted);padding:14px 0 0}
.disc{background:#eef2f8;border-radius:12px;padding:13px 15px;font-size:12.5px;color:var(--muted);margin:24px 0}
footer.site{background:var(--navy);color:#aebdd6;padding:26px 0;font-size:13px;margin-top:30px}
footer.site .wrap{max-width:1120px}
footer.site a{color:#d7e0f0}
footer .brand{color:#fff;margin-bottom:8px}
@media(max-width:640px){.hero h1{font-size:25px}header nav a:not(.cta-top){display:none}}
.citygrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(228px,1fr));gap:16px;margin:20px 0}
.ccard{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--sh);text-decoration:none;color:var(--ink);display:flex;flex-direction:column;transition:transform .12s,box-shadow .12s}
.ccard:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(15,36,64,.14);text-decoration:none}
.cc-img{position:relative;height:132px;display:flex;align-items:flex-end;padding:12px}
.cc-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cc-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(0,0,0,.4));z-index:0}
.cc-name{position:relative;z-index:1;color:#fff;font-weight:800;font-size:22px;text-shadow:0 1px 6px rgba(0,0,0,.45)}
.cc-body{padding:14px}.cc-body h3{font-size:15.5px;margin:0 0 8px}
.cc-bullets{margin:0 0 10px;padding-left:18px}.cc-bullets li{font-size:13px;color:var(--muted);margin:3px 0}
.cc-more{color:var(--blue);font-weight:700;font-size:13.5px}
.cityindex{columns:3;column-gap:24px;margin:16px 0;font-size:14px}
.cityindex a{display:block;padding:4px 0}
@media(max-width:640px){.cityindex{columns:2}}
.toc{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:18px 0;box-shadow:var(--sh)}
.toc b{display:block;color:var(--navy);margin-bottom:6px}
.toc a{display:block;padding:3px 0;font-size:14.5px}
.cform{max-width:540px}
.cform label{display:block;font-weight:700;font-size:13px;margin:14px 0 5px;color:var(--navy)}
.cform input,.cform textarea{width:100%;padding:11px 13px;border:1.5px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;outline:none}
.cform input:focus,.cform textarea:focus{border-color:var(--blue)}
.cform button{margin-top:16px;background:var(--green);color:#fff;border:none;border-radius:10px;padding:12px 24px;font-weight:700;cursor:pointer;font-size:15px}
.big404{text-align:center;font-size:70px;font-weight:800;color:var(--blue);margin:10px 0}
.calc{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh);padding:22px;margin:18px 0}
.calc .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:560px){.calc .row{grid-template-columns:1fr}}
.calc label{display:block;font-size:13px;font-weight:700;color:var(--navy);margin:10px 0 5px}
.calc .ip{position:relative;display:flex;align-items:center}
.calc input,.calc select{width:100%;padding:11px 44px 11px 12px;border:1.5px solid var(--line);border-radius:10px;font-size:15px;outline:none;font-family:inherit}
.calc input:focus,.calc select:focus{border-color:var(--blue)}
.calc .u{position:absolute;right:12px;color:var(--muted);font-size:12px;font-weight:600;pointer-events:none}
.calc .res{background:linear-gradient(135deg,#0e2340,#173a68);color:#fff;border-radius:12px;padding:18px;margin-top:16px;text-align:center}
.calc .res .big{font-size:30px;font-weight:800}
.calc .res .k{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:#c6d3e8;font-weight:700}
.calc .res .sub{color:#c6d3e8;font-size:13px;margin-top:6px}
.calc table.mini{width:100%;border-collapse:collapse;font-size:14px;margin-top:12px}
.calc table.mini td{padding:7px 4px;border-bottom:1px solid var(--line)}
.calc table.mini td:last-child{text-align:right;font-weight:700;color:var(--navy)}