:root{--brand:#0d9488;--brand-d:#115e59;--brand-l:#f0fdfa;--ink:#1f2937;--muted:#6b7280;--line:#e5e7eb;--bg:#fafaf9;--card:#fff;--r:12px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
a{color:var(--brand-d)}
img{max-width:100%}
.wrap{max-width:1180px;margin:0 auto;padding:0 18px}
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:62px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:20px;color:var(--ink);text-decoration:none}
.logo span{color:var(--brand)}
nav.main{display:flex;gap:4px;flex-wrap:wrap}
nav.main a{text-decoration:none;color:var(--ink);padding:8px 12px;border-radius:8px;font-size:15px;font-weight:500}
nav.main a:hover,nav.main a.active{background:var(--brand-l);color:var(--brand-d)}
.hero{padding:34px 0 14px;text-align:center}
.hero h1{font-size:clamp(26px,4vw,40px);line-height:1.2;margin:0 0 10px}
.hero p{color:var(--muted);max-width:720px;margin:0 auto;font-size:17px}
.badges{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:14px}
.badges span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:13px;color:var(--muted)}
.tool{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px;margin:22px auto 40px;align-items:start}
@media(max-width:920px){.tool{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.card h2{font-size:16px;margin:0 0 12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
@media(max-width:560px){.grid2,.grid3{grid-template-columns:1fr}}
label{display:block;font-size:13px;font-weight:600;margin:0 0 4px;color:#374151}
input,textarea,select{width:100%;font:inherit;font-size:15px;padding:9px 11px;border:1px solid #d1d5db;border-radius:8px;background:#fff;color:var(--ink)}
input:focus,textarea:focus,select:focus{outline:2px solid #5eead4;border-color:var(--brand)}
textarea{resize:vertical;min-height:70px}
.field{margin-bottom:12px}
.section{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line)}
.items .row{display:grid;grid-template-columns:minmax(0,1fr) 70px 100px 34px;gap:8px;margin-bottom:8px;align-items:center}
.items .head{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase}
@media(max-width:560px){.items .row{grid-template-columns:minmax(0,1fr) 56px 84px 30px}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:10px;padding:11px 18px;font:inherit;font-weight:700;cursor:pointer;text-decoration:none}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-d)}
.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn.small{padding:7px 12px;font-size:14px}
.btn.x{background:#fef2f2;color:#b91c1c;padding:6px;border-radius:8px;width:34px;height:38px}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.hint{font-size:13px;color:var(--muted)}
.preview-wrap{position:sticky;top:80px}
@media(max-width:920px){.preview-wrap{position:static}}
.paper{background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 10px 30px rgba(0,0,0,.06);padding:30px;font-size:13px;min-height:500px;border-top:6px solid var(--brand)}
.paper .top{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.paper .top img{max-height:56px;max-width:160px}
.paper .doc-title{font-size:26px;font-weight:800;letter-spacing:.04em;text-align:right}
.paper .meta{text-align:right;color:#4b5563;margin-top:4px}
.paper .parties{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0 18px}
.paper .lbl{font-size:11px;font-weight:700;text-transform:uppercase;color:var(--muted);letter-spacing:.05em}
.paper .pre{white-space:pre-line}
.paper table{width:100%;border-collapse:collapse}
.paper th{text-align:left;font-size:11px;text-transform:uppercase;padding:8px;background:#f3f4f6}
.paper td{padding:8px;border-bottom:1px solid #f1f1f1;vertical-align:top}
.paper .num{text-align:right;white-space:nowrap}
.paper .totals{margin-left:auto;width:60%;margin-top:12px}
.paper .totals div{display:flex;justify-content:space-between;padding:4px 8px}
.paper .totals .grand{font-weight:800;font-size:15px;border-top:2px solid var(--ink);margin-top:4px;padding-top:8px}
.paper .notes{margin-top:22px;color:#374151}
.content{max-width:820px;margin:0 auto 50px}
.content h2{font-size:24px;margin:36px 0 10px;line-height:1.3}
.content h3{font-size:18px;margin:22px 0 6px}
.content ul,.content ol{padding-left:22px}
.content li{margin-bottom:6px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:10px}
.faq summary{font-weight:700;cursor:pointer}
.more{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin-top:12px}
.more a{display:block;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px;text-decoration:none;color:var(--ink);font-weight:600}
.more a:hover{border-color:var(--brand);color:var(--brand-d)}
footer.site{background:#1c1917;color:#d6d3d1;padding:34px 0;margin-top:30px;font-size:14px}
footer.site a{color:#99f6e4;text-decoration:none}
footer.site .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px}
footer.site h4{color:#fff;margin:0 0 8px}
footer.site ul{list-style:none;padding:0;margin:0}
footer.site li{margin-bottom:6px}
.legal{max-width:820px;margin:30px auto 50px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px}
.legal h1{margin-top:0}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 18px;border-radius:10px;font-size:14px;opacity:0;transition:opacity .3s;pointer-events:none;z-index:50}
.toast.show{opacity:1}
@media(max-width:700px){header.site{position:static}nav.main a{padding:6px 9px;font-size:14px}}
.logo b span{color:var(--brand)}
.calc{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:22px;margin:22px auto 30px;align-items:start}
@media(max-width:860px){.calc{grid-template-columns:1fr}}
.inline{display:flex;gap:8px}.inline>*{flex:1}
.result{background:#1c1917;color:#fff;border-radius:var(--r);padding:20px;position:sticky;top:80px}
@media(max-width:860px){.result{position:static}}
.result h2{color:#5eead4;margin:0 0 12px;font-size:15px;text-transform:uppercase;letter-spacing:.05em}
.result .r{display:flex;justify-content:space-between;gap:10px;padding:9px 0;border-bottom:1px solid #3f3f46}
.result .r b{font-size:18px;color:#fff;text-align:right}
.result .r span{color:#d6d3d1}
.result .big b{font-size:26px;color:#5eead4}
.result .note{background:#292524;border-left:3px solid #5eead4;padding:10px 12px;margin-top:12px;font-size:14px;color:#e7e5e4;border-radius:6px}
.result .acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.btn.wa{background:#25d366;color:#fff}
.range{display:flex;align-items:center;gap:10px}.range input{flex:1}.range output{min-width:44px;font-weight:700}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;margin:20px 0 40px}
.grid-cards a{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;text-decoration:none;color:var(--ink)}
.grid-cards a:hover{border-color:var(--brand)}
.grid-cards b{display:block;font-size:17px;margin-bottom:4px}
.grid-cards span{color:var(--muted);font-size:14px}
.formula{background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:8px;padding:12px 16px;font-family:ui-monospace,Consolas,monospace;font-size:14px;overflow-x:auto}
table.t{width:100%;border-collapse:collapse;background:#fff;font-size:15px}
table.t th,table.t td{border:1px solid var(--line);padding:8px 10px;text-align:left}
table.t th{background:#fafaf9}
.status{display:inline-block;padding:3px 10px;border-radius:999px;font-size:13px;font-weight:700}
.status.ok{background:#14532d;color:#bbf7d0}.status.hi{background:#7c2d12;color:#fed7aa}.status.lo{background:#1e3a8a;color:#bfdbfe}
.chart{background:#fff;border-radius:10px;margin-top:14px;padding:6px}
.chart svg{width:100%;height:auto;display:block}
.seg{display:flex;gap:6px}.seg label{flex:1;margin:0}.seg input{display:none}.seg span{display:block;text-align:center;border:1px solid #d1d5db;border-radius:8px;padding:9px;cursor:pointer;font-weight:600}
.seg input:checked+span{background:var(--brand);color:#fff;border-color:var(--brand)}