:root{
  --brand:#2d5a3d;--brand2:#3f7a52;--accent:#b8742f;--ink:#1c2620;--muted:#5c6b60;
  --bg:#f7f5ef;--card:#fff;--line:#dfe3d8;--green:#2d5a3d;--amber:#b8742f;--red:#a13c2e;--radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}
a{color:var(--brand2)}
.wrap{max-width:980px;margin:0 auto;padding:0 20px}
header.site{background:#12251a;color:#fff;padding:14px 0}
header.site .wrap{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.logo{font-weight:800;font-size:19px;color:#fff;text-decoration:none}
.logo .tick{color:#e0b06e}
nav.top{margin-left:auto;display:flex;gap:18px;font-size:14px}
nav.top a{color:#c8dbc9;text-decoration:none}
.hero{padding:34px 0 6px}
h1{font-size:29px;margin:0 0 8px;color:#12251a}
.sub{color:var(--muted);max-width:760px;font-size:16px}
.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 4px}
.badge{font-size:12.5px;background:#e7efe4;color:var(--brand);padding:3px 10px;border-radius:20px}
.grid{display:grid;grid-template-columns:1.15fr 1fr;gap:18px;margin-top:16px;align-items:start}
@media(max-width:860px){.grid{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 1px 4px rgba(20,40,20,.06)}
.card h2{margin:0 0 4px;font-size:18px;color:#12251a}
.card .card-note{font-size:13px;color:var(--muted);margin:0 0 14px}
label{display:block;font-size:12px;font-weight:700;margin:0 0 3px;color:var(--muted)}
input,select{width:100%;padding:8px 8px;border:1px solid var(--line);border-radius:7px;font:inherit;font-size:13.5px;background:#fff;color:var(--ink)}
.primary{display:inline-block;background:var(--brand2);color:#fff;border:0;border-radius:9px;padding:11px 20px;font-size:14.5px;font-weight:700;cursor:pointer}
.primary:hover{background:var(--brand)}
.secondary{display:inline-block;background:#eef1ea;color:var(--ink);border:1px solid var(--line);border-radius:9px;padding:9px 16px;font-size:13.5px;font-weight:700;cursor:pointer}
.secondary:hover{background:#e4e9de}
.hint{font-size:12.5px;color:var(--muted)}

#callsTable{width:100%;border-collapse:collapse;font-size:13px}
#callsTable th{text-align:left;font-size:11px;color:var(--muted);font-weight:700;padding:4px 3px;text-transform:uppercase;letter-spacing:.02em}
#callsTable td{padding:4px 3px;vertical-align:bottom}
#callsTable td.call-num{color:var(--muted);font-weight:700;font-size:12.5px;padding-bottom:12px;white-space:nowrap}
#callsTable input,#callsTable select{padding:7px 5px;font-size:13px}
.col-deg,.col-min,.col-sec{width:52px}
.col-q{width:52px}
.col-dist{width:78px}
.col-unit{width:64px}
.rm-btn{background:none;border:1px solid var(--line);color:var(--red);border-radius:6px;width:28px;height:32px;cursor:pointer;font-size:15px;line-height:1}
.rm-btn:hover{background:#fbeceb}
.calls-actions{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap;align-items:center}
.pob-note{font-size:12.5px;color:var(--muted);margin:10px 0 6px;padding:8px 10px;background:#f2f5ee;border-radius:7px}

.plot-wrap{position:relative;background:#fbfaf6;border:1px solid var(--line);border-radius:9px;overflow:hidden}
#plotCanvas{width:100%;display:block}
.stat-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0}
.stat{background:#f2f5ee;border-radius:9px;padding:10px 12px}
.stat b{font-size:19px;color:#12251a;display:block}
.stat span{font-size:11px;color:var(--muted)}
.closure-banner{font-size:13.5px;padding:10px 12px;border-radius:8px;font-weight:600;margin-top:12px}
.closure-banner.ok{background:#e6f0e6;color:var(--green)}
.closure-banner.warn{background:#fdf1e1;color:var(--amber)}
.closure-banner.bad{background:#fbeceb;color:var(--red)}
.export-row{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}

table.example-table{width:100%;border-collapse:collapse;margin:14px 0;font-size:14.5px}
table.example-table th,table.example-table td{padding:8px;border:1px solid var(--line);text-align:left}
table.example-table th{background:#eef1ea}

section.seo{background:#fff;border-top:1px solid var(--line);margin-top:34px;padding:34px 0}
section.seo h2{color:#12251a;font-size:22px}
section.seo h3{color:var(--brand);font-size:17px;margin-top:22px}
section.seo p,section.seo li{font-size:15px;color:#33402f}
section.seo code{background:#f2f5ee;padding:1px 5px;border-radius:4px;font-size:13.5px}
.formula{background:#eef1ea;padding:12px 16px;border-radius:8px;font-family:ui-monospace,monospace;font-size:14px}
.faq dt{font-weight:700;margin-top:16px}
.faq dd{margin:4px 0 0}
.disclaimer-box{background:#fdf1e1;border:1px solid #edd7ae;border-radius:9px;padding:14px 16px;font-size:13.5px;color:#5c4a26;margin:18px 0}
footer.site{background:#12251a;color:#a9c1ab;font-size:13px;padding:24px 0;margin-top:0}
footer.site a{color:#c8dbc9}
footer.site .disc{font-size:12px;color:#7fa084;margin-top:8px}
@media(max-width:480px){h1{font-size:23px}.stat-row{grid-template-columns:1fr 1fr}.stat b{font-size:16px}}