/* Sheetsmith design system — shared by every tool page on the domain. System fonts only (no third-party requests). */
:root{--navy:#1F3A5F;--navy-700:#172d4a;--orange:#D9822B;--orange-600:#c2731f;--ink:#111827;--muted:#5b6474;--line:#e5e7eb;--bg:#f6f7f9;--card:#fff;--soft:#eef2f7;--red:#fde2e2;--radius:14px;--shadow:0 1px 2px rgba(16,24,40,.06),0 8px 24px -12px rgba(16,24,40,.18)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 -apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--navy)}img{max-width:100%;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
/* header */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);font-weight:700;font-size:1.05rem;letter-spacing:-.01em}
.brand img{width:32px;height:32px}
.nav{display:flex;gap:22px;font-size:.95rem}.nav a{text-decoration:none;color:var(--muted);font-weight:500}.nav a:hover{color:var(--navy)}
.nav .btn{padding:8px 14px}
/* hero */
.hero{padding:48px 0 12px}.hero h1{font-size:clamp(1.9rem,3.6vw,2.6rem);line-height:1.15;margin:0 0 10px;color:var(--navy);letter-spacing:-.02em}
.hero .lead{font-size:1.12rem;color:var(--muted);max-width:720px;margin:0 0 6px}
.badges{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 0}.badges span{background:var(--soft);color:var(--navy);border-radius:999px;padding:4px 12px;font-size:.82rem;font-weight:600}
/* tool card */
.tool{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin:24px 0}
.tool h2{margin:0 0 14px;font-size:1.1rem;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.06em}
.settings,.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:14px}
label{display:block;font-size:.8rem;color:var(--muted);font-weight:600;margin-bottom:4px}
input,select,textarea{width:100%;font:inherit;padding:9px 11px;border:1px solid #cfd5df;border-radius:8px;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid rgba(31,58,95,.25);border-color:var(--navy)}
table{width:100%;border-collapse:separate;border-spacing:0;font-size:.95rem;margin-top:8px}
th{background:var(--navy);color:#fff;text-align:left;padding:10px 10px;font-weight:600;font-size:.85rem}th:first-child{border-radius:8px 0 0 0}th:last-child{border-radius:0 8px 0 0}
td{padding:7px 8px;border-bottom:1px solid var(--line);vertical-align:middle}td input,td select{padding:7px 8px}
.num{text-align:right;font-variant-numeric:tabular-nums}tr.over td{background:var(--red)}
button,.btn{font:inherit;font-weight:600;padding:10px 16px;border-radius:9px;border:1px solid var(--navy);background:#fff;color:var(--navy);cursor:pointer;text-decoration:none;display:inline-block}
button:hover{background:var(--soft)}button.primary,.btn.primary{background:var(--navy);color:#fff}button.primary:hover,.btn.primary:hover{background:var(--navy-700)}
.btn.accent{background:var(--orange);border-color:var(--orange);color:#fff}.btn.accent:hover{background:var(--orange-600)}
button.del{border:none;background:none;color:var(--muted);font-size:1.1rem;padding:2px 6px}
.actions{margin:14px 0 4px;display:flex;flex-wrap:wrap;gap:8px}
.totals{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:16px}
.totals div{background:var(--soft);border-radius:10px;padding:12px 14px;font-size:.85rem;color:var(--muted);font-weight:600}
.totals b{display:block;font-size:1.35rem;color:var(--navy);margin-top:2px;letter-spacing:-.01em}
.muted{color:var(--muted);font-size:.9rem}
/* upgrade panel */
.upgrade{display:grid;grid-template-columns:1.1fr 1fr;gap:28px;align-items:center;background:var(--navy);color:#fff;border-radius:var(--radius);padding:32px;margin:36px 0}
.upgrade img{border-radius:10px;box-shadow:0 12px 30px -10px rgba(0,0,0,.5)}
.upgrade h2{margin:0 0 8px;font-size:1.5rem;color:#fff;letter-spacing:-.01em}.upgrade p{color:#d6deea;margin:0 0 12px}
.upgrade ul{margin:0 0 16px;padding-left:18px;color:#d6deea}.upgrade .price{font-size:1.6rem;font-weight:700;color:#fff;margin-right:12px}
.upgrade .fine{color:#a9b7cb;font-size:.85rem;margin-top:10px}
@media (max-width:760px){.upgrade{grid-template-columns:1fr}}
/* content */
.content{max-width:760px}.content h2{color:var(--navy);margin-top:36px;font-size:1.35rem;letter-spacing:-.01em}.content p{color:#2b3340}
details{border:1px solid var(--line);border-radius:10px;background:#fff;padding:12px 16px;margin:10px 0}summary{cursor:pointer;font-weight:600;color:var(--navy)}details p{margin:10px 0 0}
/* related */
.related{margin:44px 0}.related h2{font-size:1.2rem;color:var(--navy)}.related ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.related li a{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;text-decoration:none;color:var(--navy);font-weight:600;box-shadow:var(--shadow)}.related li a:hover{border-color:var(--navy)}
/* landing */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin:28px 0}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px}
.card h3{margin:0;font-size:1.15rem;color:var(--navy)}.card p{margin:0;color:var(--muted);flex:1}.card .btn{align-self:flex-start;margin-top:6px}
.strip{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin:8px 0 40px}
.strip h2{margin:0 0 6px;color:var(--navy)}.strip p{margin:0 0 12px;color:var(--muted)}
/* footer */
.site-footer{border-top:1px solid var(--line);margin-top:56px;padding:28px 0;color:var(--muted);font-size:.9rem}
.site-footer .wrap{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center}.site-footer a{color:var(--muted)}
@media print{.site-header,.hero,.tool,.upgrade,.content,.related,.site-footer{display:none!important}}