:root{
  --bg:#ffffff; --bg2:#f3f6f4; --surface:#ffffff; --surface2:#eef3f0;
  --ink:#12241c; --ink2:#3a4d43; --muted:#6b7f74; --line:#dce6df;
  --accent:#0b6b4f; --accent-ink:#ffffff; --accent-soft:#e6f2ec;
  --amber:#9a6b12; --amber-bg:#fef6e0; --red:#9b2c2c;
  --nav:#0e2a20;
  --radius:14px; --radius-s:9px;
  --shadow:0 6px 24px rgba(11,50,35,.08), 0 1px 3px rgba(11,50,35,.06);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0c1210; --bg2:#111a16; --surface:#141f1a; --surface2:#1a2922;
    --ink:#e8f0ea; --ink2:#b9cdc0; --muted:#8aa397; --line:#24382e;
    --accent:#2fbb8f; --accent-ink:#06231a; --accent-soft:#173628;
    --amber:#e8c87a; --amber-bg:#2e2812; --red:#f0a0a0;
    --nav:#08110d; --shadow:0 6px 24px rgba(0,0,0,.4);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Source Sans 3",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
.serif{font-family:"Source Serif 4",Georgia,serif}
.mono{font-family:"JetBrains Mono",ui-monospace,monospace}

/* header */
.topbar{background:var(--nav);color:#eaf3ed;position:sticky;top:0;z-index:50;border-bottom:3px solid #c9a227}
.topbar-inner{max-width:1120px;margin:0 auto;padding:0 18px;display:flex;align-items:center;gap:18px;min-height:58px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
@media(max-width:640px){.topbar-inner{gap:8px}nav.main{order:3;width:100%;margin-left:0;flex-wrap:wrap;overflow:visible}}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff;flex-shrink:0}
.brand-mark{width:34px;height:34px;border-radius:8px;background:#c9a227;color:#12241c;display:grid;place-items:center;font-weight:800;font-size:19px}
.brand b{font-size:17px;letter-spacing:-.02em;line-height:1}
.brand small{display:block;font-size:11px;color:#9fc4ad;font-weight:600;letter-spacing:.04em;text-transform:uppercase}
nav.main{display:flex;gap:2px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
nav.main::-webkit-scrollbar{display:none}
nav.main a{color:#cfe2d4;text-decoration:none;font-size:14px;font-weight:600;padding:8px 10px;border-radius:7px;white-space:nowrap}
nav.main a:hover,nav.main a.active{background:rgba(255,255,255,.12);color:#fff}
.updated{font-size:12px;color:#9fc4ad;white-space:nowrap;display:none}
@media(min-width:760px){.updated{display:block}}

.wrap{max-width:1120px;margin:0 auto;padding:0 18px 64px}
.hero{padding:34px 0 8px}
.hero h1,.hero h2{font-family:"Source Serif 4",Georgia,serif;font-size:clamp(30px,5vw,46px);line-height:1.05;letter-spacing:-.02em;margin:0 0 10px;max-width:14em}
.hero p.lede{font-size:18px;color:var(--ink2);max-width:62ch;margin:0}
.rate-strip{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 6px}
.chip{background:var(--surface2);border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:13px;font-weight:600;color:var(--ink2)}
.chip b{color:var(--ink)}

/* calculator layout */
.calc-grid{display:grid;grid-template-columns:1fr;gap:18px;margin-top:20px}
@media(min-width:900px){.calc-grid{grid-template-columns:400px 1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-pad{padding:20px}
.field{margin-bottom:16px}
.field label{display:flex;justify-content:space-between;font-size:13px;font-weight:700;letter-spacing:.02em;text-transform:uppercase;color:var(--muted);margin-bottom:7px}
.field label output{color:var(--accent);font-family:"JetBrains Mono",monospace;text-transform:none;letter-spacing:0}
input[type=number],input[type=text],select{width:100%;padding:11px 12px;border:1.5px solid var(--line);border-radius:9px;background:var(--bg);color:var(--ink);font-size:16px;font-family:inherit}
input:focus,select:focus{outline:2px solid var(--accent);border-color:transparent}
input[type=range]{width:100%;accent-color:var(--accent);height:28px}
.seg{display:flex;background:var(--surface2);border:1px solid var(--line);border-radius:10px;padding:3px;gap:3px}
.seg button{flex:1;border:0;background:transparent;padding:8px 6px;border-radius:7px;font:600 14px "Source Sans 3",sans-serif;color:var(--ink2);cursor:pointer}
.seg button[aria-pressed=true]{background:var(--surface);color:var(--ink);box-shadow:0 1px 4px rgba(0,0,0,.12)}
.checks{display:grid;gap:8px}
.check{display:flex;gap:10px;align-items:flex-start;background:var(--bg2);border:1px solid var(--line);border-radius:9px;padding:10px 12px;cursor:pointer;font-size:14px}
.check input{margin-top:3px;accent-color:var(--accent);width:17px;height:17px}
details.adv{border-top:1px dashed var(--line);padding-top:12px;margin-top:4px}
details.adv summary{cursor:pointer;font-weight:700;font-size:14px;color:var(--accent)}

/* results */
.net-hero{background:var(--nav);color:#fff;border-radius:var(--radius);padding:22px;position:relative;overflow:hidden}
.net-hero .label{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#9fc4ad}
.net-big{font-family:"JetBrains Mono",monospace;font-size:clamp(34px,5vw,48px);font-weight:700;letter-spacing:-.03em;line-height:1;margin:6px 0 2px}
.net-sub{color:#cfe2d4;font-size:15px}
.net-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
.net-grid div{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:10px 12px}
.net-grid span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:#9fc4ad;font-weight:700}
.net-grid b{font-family:"JetBrains Mono",monospace;font-size:17px}
.bar{display:flex;height:16px;border-radius:999px;overflow:hidden;background:var(--surface2);margin:14px 0 8px;border:1px solid var(--line)}
.bar i{display:block;height:100%}
.legend{display:flex;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--ink2)}
.legend i{width:10px;height:10px;border-radius:3px;display:inline-block;margin-right:5px;vertical-align:-1px}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{padding:9px 8px;border-bottom:1px solid var(--line);text-align:right}
th:first-child,td:first-child{text-align:left}
th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
tr.total td{font-weight:800;border-top:2px solid var(--ink);border-bottom:none}
.pos{color:var(--accent)} .neg{color:var(--red)}
.note{font-size:13px;color:var(--muted)}
.callout{background:var(--amber-bg);border:1px solid #e8d48a;border-radius:10px;padding:13px 15px;font-size:14px;color:var(--ink)}
@media(prefers-color-scheme:dark){.callout{border-color:#5a4d1f}}

/* views / routing */
.view{display:none}.view.active{display:block}
.page-head{padding:30px 0 6px}
.page-head h1,.page-head h2{font-family:"Source Serif 4",Georgia,serif;font-size:clamp(28px,4.5vw,40px);line-height:1.08;margin:0 0 8px;letter-spacing:-.02em}
.page-head p{color:var(--ink2);font-size:17px;max-width:65ch;margin:0}
h2.sec{font-family:"Source Serif 4",Georgia,serif;font-size:24px;margin:34px 0 12px;letter-spacing:-.01em}
h3{font-size:17px;margin:20px 0 6px}
p{max-width:70ch}
.grid2{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:820px){.grid2{grid-template-columns:1fr 1fr}}
.grid3{display:grid;grid-template-columns:1fr;gap:14px}
@media(min-width:820px){.grid3{grid-template-columns:repeat(3,1fr)}}
.salary-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
@media(min-width:700px){.salary-grid{grid-template-columns:repeat(4,1fr)}}
.salary-card{display:block;text-decoration:none;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px;color:var(--ink)}
.salary-card:hover{border-color:var(--accent)}
.salary-card .amt{font-family:"JetBrains Mono",monospace;font-weight:700;font-size:20px}
.salary-card .net{color:var(--accent);font-weight:700;font-size:14px}
.salary-card small{color:var(--muted);display:block;font-size:12px;margin-top:2px}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);border:0;border-radius:9px;padding:11px 18px;font:700 15px "Source Sans 3",sans-serif;cursor:pointer;text-decoration:none}
.btn.secondary{background:var(--surface2);color:var(--ink);border:1px solid var(--line)}
.faq{border:1px solid var(--line);border-radius:12px;overflow:hidden}
.faq details{border-bottom:1px solid var(--line);padding:0}
.faq details:last-child{border-bottom:0}
.faq summary{padding:14px 16px;cursor:pointer;font-weight:700;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq .a{padding:0 16px 14px;color:var(--ink2);font-size:15px}
footer.site{border-top:1px solid var(--line);margin-top:48px;padding:22px 0 30px;color:var(--muted);font-size:13px}
footer.site a{color:var(--ink2)}
.kv{display:grid;grid-template-columns:1fr auto;gap:6px 14px;font-size:15px}
.kv dt{color:var(--ink2)} .kv dd{margin:0;font-family:"JetBrains Mono",monospace;font-weight:600;text-align:right}
.tag{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:3px 9px}
input[type=number]::-webkit-inner-spin-button{opacity:1}
.small-table td,.small-table th{padding:7px 8px;font-size:14px}
@media(max-width:640px){ th,td{padding:8px 5px;font-size:14px} .net-grid{grid-template-columns:1fr 1fr} }