:root{--bg-1: #eef2ff;--bg-2: #f8fafc;--surface: #ffffff;--text: #0f172a;--muted: #64748b;--faint: #94a3b8;--border: #e7ebf1;--border-strong: #d8dee9;--accent: #6366f1;--accent-2: #8b5cf6;--accent-soft: #eef0ff;--good: #0ea5e9;--radius: 18px;--radius-sm: 12px;--shadow: 0 10px 30px -12px rgba(30, 41, 59, .18), 0 2px 6px -2px rgba(30, 41, 59, .08);--shadow-soft: 0 4px 14px -8px rgba(30, 41, 59, .18);font-family:system-ui,-apple-system,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0}body{min-height:100vh;color:var(--text);background:radial-gradient(1200px 600px at 80% -10%,#e9e5ff 0%,transparent 55%),radial-gradient(900px 500px at -10% 10%,#e0f2fe 0%,transparent 50%),linear-gradient(180deg,var(--bg-2),var(--bg-1));background-attachment:fixed}.app{max-width:640px;margin:0 auto;padding:clamp(20px,4vw,44px) clamp(14px,4vw,20px) 64px}.hero{text-align:center;margin-bottom:26px}.hero .badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--accent);background:var(--accent-soft);border:1px solid #e0e3ff;padding:5px 12px;border-radius:999px;margin-bottom:14px}.hero h1{font-size:clamp(22px,5vw,28px);line-height:1.3;margin:0 0 8px;letter-spacing:-.01em}.hero p{margin:0;color:var(--muted);font-size:14px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:clamp(18px,4vw,26px)}.card+.card{margin-top:18px}.field{margin-bottom:18px}.field:last-child{margin-bottom:0}.field>label{display:block;font-size:13px;font-weight:600;color:#334155;margin-bottom:8px}.input-wrap{position:relative;display:flex;align-items:center}.input-wrap .suffix{position:absolute;right:14px;color:var(--faint);font-size:14px;pointer-events:none}input[type=number]{width:100%;font-size:16px;color:var(--text);background:#fbfcfe;border:1.5px solid var(--border-strong);border-radius:var(--radius-sm);padding:13px 44px 13px 14px;outline:none;transition:border-color .15s,box-shadow .15s,background .15s;-moz-appearance:textfield;-webkit-appearance:textfield;appearance:textfield}input[type=number]::-webkit-outer-spin-button,input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}input[type=number]:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 4px #6366f11f}.duration{display:grid;grid-template-columns:1fr 1fr;gap:12px}.segmented{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:#f1f5f9;border:1px solid var(--border);border-radius:var(--radius-sm);padding:4px}.segmented button{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:transparent;font-size:14px;font-weight:600;color:var(--muted);padding:11px 8px;border-radius:9px;cursor:pointer;transition:all .15s}.segmented button.active{background:#fff;color:var(--accent);box-shadow:var(--shadow-soft)}.result-empty{text-align:center;color:var(--faint);font-size:14px;padding:16px 0}.result-hero{text-align:center;padding:8px 0 20px;border-bottom:1px dashed var(--border-strong);margin-bottom:6px}.result-hero .label{font-size:13px;color:var(--muted);font-weight:600}.result-hero .amount{font-size:clamp(34px,9vw,46px);font-weight:800;letter-spacing:-.02em;line-height:1.1;margin-top:6px;background:linear-gradient(120deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}.result-hero .sub{font-size:12px;color:var(--faint);margin-top:8px}.breakdown{margin-top:8px}.row{display:flex;align-items:baseline;justify-content:space-between;padding:11px 2px;font-size:14px;border-bottom:1px solid #f1f5f9}.row:last-child{border-bottom:none}.row .k{color:var(--muted)}.row .k small{color:var(--faint);font-size:11px;margin-left:6px}.row .v{font-variant-numeric:tabular-nums;font-weight:600;color:var(--text)}.row .v.minus{color:#ef4444}.row.total{margin-top:4px;padding-top:14px;border-top:2px solid var(--border-strong);border-bottom:none}.row.total .k{color:var(--text);font-weight:700}.row.total .v{font-size:18px;font-weight:800}.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.chip{font-size:12px;color:var(--muted);background:#f8fafc;border:1px solid var(--border);border-radius:999px;padding:5px 11px}.chip strong{color:var(--text)}.disclaimer{margin-top:18px;font-size:12px;line-height:1.7;color:var(--faint)}.disclaimer a{color:var(--accent)}.foot{text-align:center;margin-top:22px;font-size:11px;color:var(--faint)}