:root{--bg:#FFFFFF;--surface:#F3F5FA;--ink:#0B1220;--muted:#5B6578;--line:#E1E5EE;--blue:#2152FF;--blue-soft:#E8EEFF;--navy:#14203F;--green:#0E9F5C;--green-soft:#E6F8EE;--gold:#FFC83D;--on-blue:#FFFFFF;--on-blue-soft:#D6DEFF;--red:#D92D20;
--display:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;--body:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0A1022;--surface:#131B33;--ink:#EEF1F8;--muted:#A3ADC2;--line:#26304D;--blue:#4C74FF;--blue-soft:#18244A;--navy:#060B18;--green:#34D58A;--green-soft:#0F2A22;--gold:#FFC83D;--on-blue:#FFFFFF;--on-blue-soft:#D6DEFF;--red:#FF6B5E;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#0A1022;--surface:#131B33;--ink:#EEF1F8;--muted:#A3ADC2;--line:#26304D;--blue:#4C74FF;--blue-soft:#18244A;--navy:#060B18;--green:#34D58A;--green-soft:#0F2A22;--gold:#FFC83D;--on-blue:#FFFFFF;--on-blue-soft:#D6DEFF;--red:#FF6B5E;color-scheme:dark}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.6;font-variant-numeric:tabular-nums}
.wrap{max-width:980px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);letter-spacing:-.025em;line-height:1.1;text-wrap:balance;margin:0;font-weight:800}
h1{font-size:clamp(2rem,5vw,3.2rem)} h2{font-size:clamp(1.4rem,3vw,1.9rem);margin-top:48px} h3{font-size:1.1rem;margin-top:26px}
p{margin:14px 0 0;max-width:68ch} a{color:var(--blue)} .muted{color:var(--muted)}
header.top .wrap{display:flex;align-items:center;gap:12px;padding-block:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.35rem;letter-spacing:-.02em;text-decoration:none;color:var(--ink)}
.logo{width:40px;height:40px;flex:none}
.top nav{margin-left:auto;display:flex;gap:20px;font-weight:600;font-size:.95rem} .top nav a{text-decoration:none;color:var(--muted)}
.kicker{color:var(--blue);font-weight:800;font-size:.85rem;letter-spacing:.08em;text-transform:uppercase;margin:24px 0 12px}
.lead{font-size:1.15rem;color:var(--muted)}
.calc{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;margin-top:32px;align-items:start}
.form{background:var(--surface);border-radius:24px;padding:24px;display:grid;gap:18px}
label{display:grid;gap:6px;font-weight:700;font-size:.98rem} label small{font-weight:500;color:var(--muted);font-size:.86rem}
.in{display:flex;align-items:center;background:var(--bg);border:1.5px solid var(--line);border-radius:14px;padding:0 14px}
.in:focus-within{border-color:var(--blue)} .in span{color:var(--muted);font-weight:700}
input,select{font:inherit;font-weight:700;color:var(--ink);background:transparent;border:0;outline:0;width:100%;padding:13px 0;min-width:0}
select{background:var(--bg);border:1.5px solid var(--line);border-radius:14px;padding:13px 14px}
.res{background:var(--blue);color:var(--on-blue);border-radius:24px;padding:26px;position:sticky;top:16px}
.res small{color:var(--on-blue-soft);font-weight:700} .res .n{font-size:clamp(2.6rem,7vw,3.6rem);font-weight:800;letter-spacing:-.04em;line-height:1.05;margin:6px 0 14px;overflow-wrap:anywhere}
.res dl{margin:0;display:grid;gap:8px;border-top:1px solid rgba(255,255,255,.25);padding-top:14px} .res dl div{display:flex;justify-content:space-between;gap:12px;font-size:.95rem}
.res dt{color:var(--on-blue-soft);font-weight:600} .res dd{margin:0;font-weight:800;text-align:right}
.res p.note{background:rgba(255,255,255,.14);border-radius:14px;padding:12px 14px;font-weight:600;font-size:.95rem;margin-top:16px}
.cta{background:var(--navy);color:#fff;border-radius:24px;padding:28px;margin-top:48px} .cta h2{margin:0;color:#fff} .cta p{color:#C9D2E8}
.btn{display:inline-block;background:var(--gold);color:#14203F;font-weight:800;padding:14px 24px;border-radius:999px;text-decoration:none;margin-top:18px}
ol,ul{max-width:68ch;padding-left:22px} li{margin-top:8px}
details{border-bottom:1px solid var(--line);padding:16px 0;max-width:68ch} summary{cursor:pointer;font-weight:800}
details p{color:var(--muted);margin-top:8px}
.more{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:20px} .more a{display:block;border:1.5px solid var(--line);border-radius:18px;padding:18px;text-decoration:none;color:var(--ink);font-weight:800} .more a span{display:block;color:var(--muted);font-weight:500;font-size:.92rem;margin-top:4px}
footer{margin-top:64px;border-top:1px solid var(--line)} footer .wrap{padding-block:26px;display:grid;gap:8px;color:var(--muted);font-size:.9rem} footer a{color:var(--muted)}
a:focus-visible,summary:focus-visible,.btn:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
@media (max-width:820px){.calc,.more{grid-template-columns:1fr} .res{position:static} .top nav{display:none}}