:root{
  --bg:#f7f5f0; --card:#ffffff; --ink:#1d1f23; --muted:#5d6168; --line:#e2ded5;
  --accent:#0f6b5c; --accent-ink:#ffffff; --accent-soft:#e3f1ed; --hl:#fbf6e8;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#15171a; --card:#1e2125; --ink:#ecebe7; --muted:#a3a7ad; --line:#33373d;
         --accent:#4fbfa8; --accent-ink:#0d1714; --accent-soft:#1d332e; --hl:#2a2719; }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Charter","Iowan Old Style","Georgia",serif;font-size:18px;line-height:1.65}
h1,h2,h3,legend,.logo,.btn,nav,table,.eyebrow,.note,.opt,.r-price,.qn,summary,.foot{
  font-family:system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:var(--accent)}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

.top{border-bottom:1px solid var(--line);background:var(--card)}
.top-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;flex-wrap:wrap}
.logo{font-weight:700;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:10px;font-size:17px}
.logo-mark{width:22px;height:22px;border-radius:6px;background:var(--accent);display:inline-block}
nav{display:flex;gap:18px;font-size:15px}
nav a{color:var(--muted);text-decoration:none}
nav a:hover{color:var(--accent)}

.hero{padding:56px 20px 24px}
.eyebrow{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);font-weight:600;margin:0 0 10px}
h1{font-size:clamp(32px,6vw,48px);line-height:1.12;margin:0 0 16px;letter-spacing:-.01em}
.lede{font-size:20px;color:var(--muted);margin:0;max-width:640px}
h2{font-size:28px;line-height:1.2;margin:56px 0 18px}
h3{font-size:21px;margin:34px 0 8px}

.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px;margin-top:20px}
.progress{height:6px;background:var(--line);border-radius:6px;overflow:hidden;margin-bottom:22px}
.bar{height:100%;width:16.6%;background:var(--accent);transition:width .25s}
fieldset{border:0;margin:0;padding:0}
legend{font-size:22px;font-weight:650;margin-bottom:16px;line-height:1.3}
.qn{display:block;font-size:13px;color:var(--muted);font-weight:500;margin-bottom:4px}
.opt{display:flex;align-items:center;gap:12px;padding:14px 16px;min-height:52px;border:1px solid var(--line);
  border-radius:10px;margin-bottom:10px;cursor:pointer;font-size:16px}
.opt:hover{border-color:var(--accent)}
.opt:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}
.opt input{accent-color:var(--accent);width:18px;height:18px;flex:none}
.nav-row{display:flex;justify-content:space-between;gap:12px;margin-top:20px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:10px;
  border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink);font-size:16px;font-weight:600;
  cursor:pointer;text-decoration:none}
.btn.ghost{background:transparent;color:var(--accent)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.result h2{margin:0 0 4px;font-size:40px}
.r-price{font-size:18px;color:var(--muted);margin:0 0 16px}
.r-alt{color:var(--muted);font-size:16px}
.note{font-size:14px;color:var(--muted);margin-top:12px}

.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--card)}
table{border-collapse:collapse;width:100%;min-width:640px;font-size:15px}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
tr.hl{background:var(--hl)}
.muted{color:var(--muted);font-size:13px}

.prose p,.prose li{max-width:680px}
.prose ul,.prose ol{padding-left:22px}
details{border-bottom:1px solid var(--line);padding:14px 0}
summary{cursor:pointer;font-weight:600;font-size:17px}
details p{margin:10px 0 0}

.foot{border-top:1px solid var(--line);margin-top:72px;padding:28px 0;font-size:14px;color:var(--muted)}
.foot-inner p{margin:4px 0}
@media (max-width:600px){
  body{font-size:17px}
  .card{padding:20px}
  .hero{padding-top:36px}
  nav{gap:14px}
}