:root{
  --bg:#ffffff; --fg:#0b1220; --muted:#485a78; --line:#e8eef6;
  --accent:#f97316; --accent-deep:#ea580c; --ok:#10b981;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji"}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.container{max-width:980px;margin:0 auto;padding:24px}
header.nav{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--line);z-index:10}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 6px}
.brand{display:flex;align-items:center;gap:10px}
.brand h1{margin:0;font-size:20px;font-weight:800;letter-spacing:.2px}
.badge{border:1px solid var(--line);border-radius:999px;padding:6px 10px;color:#0b1220;background:#fff}
.hero{padding:34px 0 10px}
.grid{display:grid;gap:18px}.grid-2{grid-template-columns:1.1fr .9fr}
@media (max-width:900px){.grid-2{grid-template-columns:1fr}}
.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}
h1{font-size:clamp(26px,5vw,46px);line-height:1.08;margin:0 0 6px}
h2{font-size:clamp(18px,2.6vw,26px);margin:0 0 10px}
.muted{color:var(--muted)}
.cta{display:inline-flex;align-items:center;gap:10px;padding:12px 16px;border-radius:12px;border:1px solid var(--line);
  background:linear-gradient(180deg,var(--accent),var(--accent-deep));color:#fff;font-weight:800}
ul{margin:10px 0 0 18px}
footer{margin:28px 0 16px;color:#4b5563;font-size:13px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.illus-wrap{display:flex;align-items:flex-start;justify-content:center}
.illus{width:100%;max-width:520px;height:auto;display:block;margin-top:10px}
.note{border-left:3px solid var(--ok);padding:10px 12px;background:#f7fdfa;border-radius:8px}
.price-note{border-left:3px solid var(--accent);padding:10px 12px;background:#fff7ed;border-radius:8px}
.display{font-size:clamp(26px,4.8vw,44px);line-height:1.08;margin:0 0 10px;font-weight:900;color:#0b1220;text-align:center}
.subtle{color:#6b7280;font-weight:700}
.columns{columns:2;column-gap:24px}
@media (max-width:700px){.columns{columns:1}}