:root{--bg:#f5f8fc;--card:#fff;--text:#14213d;--muted:#566377;--brand:#0b5fd7;--brand-soft:#e7f0fd;--ok:#0f8a6a;--border:#d9e1ec;--radius:14px;--shadow:0 1px 2px rgba(20,33,61,.06),0 4px 16px rgba(20,33,61,.05)}
@media(prefers-color-scheme:dark){:root{--bg:#0e1522;--card:#161f30;--text:#e9eef7;--muted:#9fb0c6;--brand:#6aa6ff;--brand-soft:#1b2a45;--ok:#3ccfa5;--border:#27344b;--shadow:none}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.wrap{max-width:780px;margin:0 auto;padding:0 18px}
header.site{background:var(--card);border-bottom:1px solid var(--border)}
.bar{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-weight:800;font-size:1.3rem;color:var(--text);text-decoration:none;letter-spacing:-.02em}
.brand span{color:var(--brand)}
nav a{margin-left:18px;color:var(--muted);text-decoration:none;font-weight:600;font-size:.95rem}
nav a:hover{color:var(--brand)}
main{padding-top:28px;padding-bottom:40px}
h1{font-size:clamp(1.65rem,5vw,2.3rem);line-height:1.2;letter-spacing:-.02em;margin:0 0 10px}
h2{font-size:1.35rem;margin:36px 0 8px;letter-spacing:-.01em}
h3{font-size:1.1rem;margin:24px 0 6px}
p{margin:0 0 14px}
.lead{font-size:1.1rem;color:var(--muted)}
a{color:var(--brand)}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;margin:20px 0;box-shadow:var(--shadow)}
label{display:block;font-weight:600;margin:16px 0 6px;font-size:.95rem}
input,select{width:100%;min-height:50px;padding:10px 14px;border:1.5px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);font:inherit}
input:focus,select:focus{outline:3px solid var(--brand-soft);border-color:var(--brand)}
.result{margin-top:22px;background:var(--brand-soft);border-radius:12px;padding:6px 16px}
.result div{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}
.result div:last-child{border-bottom:0}
.result .total{font-weight:800;font-size:1.25rem;color:var(--brand)}
.result .num{font-variant-numeric:tabular-nums;text-align:right}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.tool{display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;text-decoration:none;color:var(--text);box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.tool:hover{border-color:var(--brand);transform:translateY(-2px)}
.tool b{display:block;font-size:1.05rem;margin-bottom:4px;color:var(--brand)}
.tool span{color:var(--muted);font-size:.95rem}
.note{background:var(--brand-soft);border-left:4px solid var(--brand);padding:12px 16px;border-radius:8px;margin:18px 0;font-size:.95rem}
.tablewrap{overflow-x:auto;margin:14px 0}
table{border-collapse:collapse;width:100%;font-size:.92rem;font-variant-numeric:tabular-nums}
th,td{padding:8px 10px;border-bottom:1px solid var(--border);text-align:right;white-space:nowrap}
th:nth-child(2),td:nth-child(2){text-align:left}
th{background:var(--brand-soft)}
.muted{color:var(--muted);font-size:.92rem}
footer.site{border-top:1px solid var(--border);background:var(--card);padding:22px 0;color:var(--muted);font-size:.88rem}
footer.site p{margin:0 0 6px}
@media(max-width:480px){body{font-size:16px}.card{padding:16px}}
.hero{background:linear-gradient(135deg,#0b5fd7 0%,#0a3f94 100%);color:#fff;margin:0 -18px 8px;padding:34px 18px 26px;border-radius:0 0 22px 22px}
.hero h1{color:#fff}
.hero .lead{color:#dbe8ff;margin-bottom:18px}
.hero .card{color:var(--text);margin:0}
.hero-calc .result .total{font-size:1.15rem}
.ico{display:inline-flex;width:40px;height:40px;align-items:center;justify-content:center;background:var(--brand-soft);border-radius:10px;margin-bottom:10px}
.ico svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.tool .ico{display:flex}
.trust{list-style:none;padding:0;margin:34px 0 0;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.trust li{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;font-size:.92rem;color:var(--muted)}
.trust strong{display:block;color:var(--text);margin-bottom:2px}
@media(min-width:820px){.hero{margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);padding-left:calc(50vw - 390px + 18px);padding-right:calc(50vw - 390px + 18px);border-radius:0 0 28px 28px}}
main.wrap:has(.hero){padding-top:0}