:root{
  --brand:#173d66;--brand2:#2f6fb0;--accent:#c97a2e;--ink:#182028;--muted:#5b6875;--bg:#f4f7fa;--card:#fff;
  --line:#dbe3ec;--green:#1e7d43;--amber:#b8781a;--red:#b3392e;--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:960px;margin:0 auto;padding:0 20px}
header.site{background:#0f2947;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:#7fb4e0}
nav.top{margin-left:auto;display:flex;gap:18px;font-size:14px;flex-wrap:wrap}
nav.top a{color:#bcd6ee;text-decoration:none}
.hero{padding:34px 22px 6px}
h1{font-size:28px;margin:0 0 8px;color:#0f2947}
.sub{color:var(--muted);max-width:740px;font-size:16px}
.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 4px}
.badge{font-size:12.5px;background:#e6eef7;color:var(--brand);padding:3px 10px;border-radius:20px}

.tool-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 1px 4px rgba(15,41,71,.06);margin-top:18px}
.tool-card h2{margin:0 0 12px;font-size:18px;color:#0f2947}

.view-toggle{display:flex;gap:8px;margin-bottom:16px}
.view-toggle button{flex:1;padding:10px 12px;border:1px solid var(--line);background:#f5f8fb;border-radius:9px;font:inherit;font-weight:700;font-size:13.5px;color:var(--muted);cursor:pointer}
.view-toggle button.active{background:var(--brand);color:#fff;border-color:var(--brand)}

label{display:block;font-size:13.5px;font-weight:700;color:var(--muted);margin:14px 0 6px}
label:first-of-type{margin-top:0}
input[type=number],input[type=text],select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:9px;font:inherit;font-size:15px;background:#fbfdff;color:var(--ink)}
input:focus,select:focus{outline:2px solid var(--brand2);outline-offset:1px}
button.primary{padding:12px 16px;border:0;border-radius:9px;background:var(--brand);color:#fff;font:inherit;font-weight:800;font-size:14.5px;cursor:pointer}
button.primary:hover{background:var(--brand2)}
button.ghost{padding:9px 14px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--brand);font:inherit;font-weight:700;font-size:13.5px;cursor:pointer}
button.ghost:hover{background:#f2f6fa}

.pane{display:none}
.pane.active{display:block}

.lot-row-inline{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:520px){.lot-row-inline{grid-template-columns:1fr}}

table.lots{width:100%;border-collapse:collapse;margin:10px 0;font-size:14.5px}
table.lots th,table.lots td{padding:8px;border:1px solid var(--line);text-align:left}
table.lots th{background:#eef3f9;font-size:12.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.02em}
table.lots td input{padding:8px;width:100%}
table.lots td.rm{text-align:center;width:44px}
table.lots td.rm button{background:none;border:0;color:var(--red);cursor:pointer;font-size:16px;font-weight:800}
.table-actions{display:flex;justify-content:space-between;align-items:center;margin-top:8px;flex-wrap:wrap;gap:8px}

.shared-inputs{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
@media(max-width:520px){.shared-inputs{grid-template-columns:1fr}}

.results{margin-top:20px}
.big-answer{text-align:center;padding:14px 10px;background:#f2f7fc;border:1px solid var(--line);border-radius:10px}
.big-answer .round{font-size:30px;font-weight:800;color:var(--brand)}
.big-answer .round span{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin-top:2px}
.stat-row{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.stat{flex:1;min-width:120px;background:#f5f8fb;border:1px solid var(--line);border-radius:9px;padding:10px;text-align:center}
.stat b{display:block;font-size:17px;color:var(--brand)}
.stat span{font-size:11.5px;color:var(--muted)}
.stat.gain b.up{color:var(--green)}
.stat.gain b.down{color:var(--red)}

.hint{font-size:13px;color:var(--muted)}
.warn-box{background:#fdf3e2;border:1px solid #f0d9a8;color:#7a5411;border-radius:10px;padding:14px 16px;font-size:13.5px;margin:18px 0}
.warn-box b{color:#5c3f0c}

.pro-box{background:#fbf6ea;border:1px solid #ecd9a8;border-radius:10px;padding:16px 18px;margin-top:18px;font-size:13.5px;color:#5c4a1e}
.pro-box b{color:#7a5411}
.pro-box .pro-actions{display:flex;gap:10px;margin-top:10px;flex-wrap:wrap}
.pro-toast{display:none;margin-top:10px;font-size:13px;font-weight:700;color:var(--brand)}

.ad-slot{text-align:center;margin:20px auto;max-width:100%;overflow:hidden}
.ad-slot.top{margin-top:0}
.ad-728{display:block}
.ad-320{display:none}
@media(max-width:860px){.ad-728{display:none}.ad-320{display:block}}

section.seo{background:#fff;border-top:1px solid var(--line);margin-top:34px;padding:34px 0}
section.seo h2{color:#0f2947;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:#2c3642}
.faq dt{font-weight:700;margin-top:16px}
.faq dd{margin:4px 0 0}

table.dtable{width:100%;border-collapse:collapse;margin:14px 0;font-size:14.5px}
table.dtable th,table.dtable td{padding:8px;border:1px solid var(--line);text-align:left}
table.dtable th{background:#eef3f9}
table.dtable td.num,table.dtable th.num{text-align:right}

footer.site{background:#0f2947;color:#a9c3de;font-size:13px;padding:24px 0;margin-top:0}
footer.site a{color:#bcd6ee}
footer.site .disc{font-size:12px;color:#7f9ab6;margin-top:8px}
@media(max-width:480px){h1{font-size:22px}.big-answer .round{font-size:24px}}

.go-pro-link{background:none;border:none;color:var(--accent);font:inherit;font-weight:700;cursor:pointer;padding:0;text-decoration:underline}
.modal-bg{display:none;position:fixed;inset:0;background:rgba(10,30,30,.55);z-index:9998;align-items:center;justify-content:center;padding:16px}
.modal-bg.show{display:flex}
.modal{background:#fff;border-radius:14px;max-width:420px;width:100%;padding:26px;position:relative;max-height:90vh;overflow:auto;transition:max-width .2s}
.modal.wide{max-width:480px}
.modal .close{position:absolute;top:12px;right:14px;border:none;background:none;font-size:20px;cursor:pointer;color:var(--muted)}
.modal h3{margin:0 0 6px;font-size:19px;color:#0f2947}
.modal .price{font-size:26px;font-weight:800;color:var(--accent);margin-bottom:10px}
.modal .price small{font-size:12.5px;font-weight:600;color:var(--muted)}
.modal ul{margin:10px 0;padding-left:20px;font-size:13.5px}
.modal ul li{margin-bottom:5px}
.modal .gold{width:100%;padding:13px;border:none;border-radius:9px;background:var(--accent);color:#fff;font:inherit;font-weight:800;font-size:15px;cursor:pointer}
.modal .note{font-size:11.5px;color:var(--muted);margin-top:10px}
.pro-banner{background:#e6eef7;border:1px solid #c8daf0;border-radius:10px;padding:12px 16px;margin-top:14px;display:flex;gap:10px;align-items:flex-start;font-size:13.5px}

/* Pro: saved calculations list */
.saved-list{margin-top:10px;display:none}
.saved-list.show{display:block}
.saved-row{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:7px 0;border-bottom:1px solid var(--line);font-size:13px}
.saved-row:last-child{border-bottom:none}
.saved-row .sr-load{background:none;border:none;color:var(--brand2);font:inherit;font-weight:700;cursor:pointer;padding:0;text-decoration:underline}
.saved-row .sr-del{background:none;border:none;color:var(--red);font:inherit;cursor:pointer;padding:0 0 0 10px}

/* Pro: clean print/PDF export — hides everything except the calculation */
@media print{
  header.site,nav.top,.ad-slot,.pro-box,footer.site,section.seo,.view-toggle,.table-actions,.no-print{display:none!important}
  body{background:#fff}
  .tool-card{border:none;box-shadow:none;padding:0}
  .wrap{max-width:100%}
}