:root{
  --bg:#f7f7f5;
  --card:#ffffff;
  --text:#181818;
  --muted:#6b6b67;
  --border:#deded8;
  --accent:#1f5f50;
  --accent-soft:#e8f1ee;
  --danger:#a33a35;
  --shadow:0 10px 30px rgba(0,0,0,.05);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
a{color:inherit}
.wrap{width:min(1120px,calc(100% - 32px));margin:auto}
header{padding:18px 0;border-bottom:1px solid var(--border);background:rgba(247,247,245,.92);backdrop-filter:blur(10px);position:sticky;top:0;z-index:20}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-weight:800;text-decoration:none;letter-spacing:-.02em}
nav{display:flex;gap:18px;font-size:.95rem;color:var(--muted)}
nav a{text-decoration:none}
.hero{padding:64px 0 28px;text-align:center}
.eyebrow{font-size:.84rem;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);font-weight:800}
h1{font-size:clamp(2.1rem,6vw,4.6rem);line-height:.98;letter-spacing:-.055em;margin:12px auto 18px;max-width:900px}
.lead{max-width:700px;margin:auto;font-size:clamp(1rem,2vw,1.25rem);color:var(--muted)}
.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--border);border-radius:999px;background:var(--card);font-size:.86rem;color:var(--muted);margin-top:22px}
.main-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:start;padding:24px 0 72px}
.panel{background:var(--card);border:1px solid var(--border);border-radius:22px;padding:24px;box-shadow:var(--shadow)}
.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mode-btn,.btn{border:1px solid var(--border);background:var(--card);color:var(--text);min-height:46px;border-radius:13px;padding:10px 14px;font:inherit;font-weight:700;cursor:pointer}
.mode-btn.active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-top:18px}
label{display:block;font-weight:700;font-size:.92rem}
select,input{width:100%;min-height:46px;margin-top:7px;border:1px solid var(--border);border-radius:12px;background:#fff;color:var(--text);padding:0 12px;font:inherit;font-size:16px}
.money-wrap{position:relative}
.money-wrap span{position:absolute;left:13px;top:50%;transform:translateY(-31%);color:var(--muted)}
.money-wrap input{padding-left:28px}
.help{font-size:.78rem;color:var(--muted);margin:7px 0 0}
.notice{margin-top:16px;padding:13px 14px;border:1px solid var(--border);border-radius:13px;background:#fafaf8;font-size:.83rem;color:var(--muted)}
.result-panel{position:sticky;top:88px}
.result-big{font-size:clamp(2.8rem,7vw,4.7rem);font-weight:850;letter-spacing:-.055em;margin:4px 0}
.result-sub{color:var(--muted);font-size:.92rem}
.breakdown{margin:22px 0 0;border-top:1px solid var(--border)}
.row{display:flex;justify-content:space-between;gap:24px;padding:12px 0;border-bottom:1px solid #ecece7}
.row strong{font-weight:800}
.profit-row{font-size:1.15rem}
.callout{margin-top:18px;padding:16px;border:1px solid var(--border);border-radius:14px;background:#fafaf8}
.callout h3{font-size:.95rem;margin:0 0 6px}
.callout p{font-size:.84rem;color:var(--muted);margin:0}
.hidden{display:none!important}
.section{padding:70px 0}
.section h2{font-size:clamp(1.8rem,4vw,3rem);letter-spacing:-.035em;margin:0 0 14px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:20px}
.card h3{margin:0 0 7px;font-size:1.05rem}
.card p{margin:0;color:var(--muted);font-size:.9rem}
footer{border-top:1px solid var(--border);padding:30px 0 46px;color:var(--muted);font-size:.83rem}
.footer-links{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:10px}
.content-page{padding:56px 0 80px;max-width:800px}
.content-page h1{font-size:clamp(2rem,5vw,3.5rem);margin-left:0}
.content-page h2{margin-top:36px}
.content-page p,.content-page li{color:#44443f}
code{background:#ecece7;padding:2px 5px;border-radius:5px}
@media(max-width:820px){
  nav{display:none}
  .main-grid,.cards{grid-template-columns:1fr}
  .result-panel{position:static}
}
@media(max-width:560px){
  .wrap{width:min(100% - 22px,1120px)}
  .hero{padding-top:44px}
  .panel{padding:18px}
  .grid-2,.mode-grid{grid-template-columns:1fr}
}