:root {
  color-scheme: light;
  --navy: #0d2a52;
  --blue: #1677ff;
  --cyan: #16b6c8;
  --sky: #eaf5ff;
  --ink: #16324a;
  --muted: #63778a;
  --line: #d8e6f2;
  --paper: #ffffff;
  --bg: #f4f8fc;
  --shadow: 0 20px 55px rgba(13, 42, 82, .09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 92% 6%, rgba(22,119,255,.11), transparent 25rem),
    radial-gradient(circle at 8% 86%, rgba(22,182,200,.09), transparent 22rem),
    var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.65;
}
button, input { font: inherit; }
button { cursor: pointer; }
a { color: var(--blue); text-underline-offset: 3px; }
.topbar { background: var(--navy); color: white; }
.topbar-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 26px 0 30px;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border: 1px solid rgba(125,235,244,.35);
  border-radius: 999px;
  background: rgba(22,182,200,.18);
  color: #b9f6fb;
  font-size: .78rem;
  letter-spacing: .06em;
}
h1 {
  margin: 13px 0 4px;
  font-size: clamp(1.72rem, 4.4vw, 2.6rem);
  line-height: 1.27;
  letter-spacing: -.02em;
}
.lead { margin: 0; color: #cfe1f2; font-size: 1rem; }
.layout {
  width: min(1120px, calc(100% - 32px));
  margin: 30px auto 54px;
  display: grid;
  grid-template-columns: minmax(0, .96fr) minmax(380px, 1.04fr);
  gap: 24px;
  align-items: start;
}
.card {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--paper);
  box-shadow: var(--shadow);
}
.form-card { padding: 25px; }
.section-title {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 6px;
  color: var(--navy);
  font-size: 1.18rem;
  line-height: 1.4;
}
.step {
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--blue);
  color: white;
  font-size: .84rem;
}
.hint { margin: 0 0 20px; color: var(--muted); font-size: .9rem; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { min-width: 0; }
label { display: block; margin-bottom: 6px; color: var(--ink); font-size: .88rem; font-weight: 650; }
.input-wrap { position: relative; }
input[type="number"] {
  width: 100%;
  min-height: 49px;
  padding: 10px 67px 10px 13px;
  border: 1px solid #bcd0e2;
  border-radius: 11px;
  outline: none;
  background: #fbfdff;
  color: var(--navy);
  font-size: 1.05rem;
  transition: border-color .18s, box-shadow .18s, background .18s;
}
input[type="number"]:focus {
  border-color: var(--blue);
  background: white;
  box-shadow: 0 0 0 4px rgba(22,119,255,.12);
}
.unit {
  position: absolute;
  right: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: .78rem;
  pointer-events: none;
}
.divider { height: 1px; margin: 23px 0; background: var(--line); }
.pension-note {
  margin: 14px 0 0;
  padding: 12px 14px;
  border-radius: 11px;
  background: var(--sky);
  color: var(--muted);
  font-size: .82rem;
}
.actions { display: flex; gap: 10px; margin-top: 22px; }
.primary, .secondary {
  min-height: 51px;
  border: 0;
  border-radius: 12px;
  font-weight: 750;
}
.primary {
  flex: 1;
  background: linear-gradient(135deg, var(--blue), #0863dc);
  color: white;
  box-shadow: 0 10px 25px rgba(22,119,255,.24);
}
.primary:hover { filter: brightness(1.04); }
.primary:focus-visible, .secondary:focus-visible { outline: 3px solid rgba(22,119,255,.28); outline-offset: 2px; }
.secondary { padding: 0 18px; background: #edf3f8; color: var(--muted); }
.privacy { margin: 11px 0 0; text-align: center; color: var(--muted); font-size: .76rem; }
.error {
  display: none;
  margin: 15px 0 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: #fff1f3;
  color: #a93b4c;
  font-size: .88rem;
}
.result-card { position: sticky; top: 18px; overflow: hidden; }
.result-top {
  padding: 25px 25px 23px;
  background:
    radial-gradient(circle at 93% 5%, rgba(39,148,255,.45), transparent 16rem),
    var(--navy);
  color: white;
}
.result-label { margin: 0; color: #c9def1; font-size: .86rem; }
.result-status {
  display: inline-flex;
  margin-top: 13px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(217,79,100,.3);
  font-size: .79rem;
}
.result-amount {
  margin: 4px 0 2px;
  font-size: clamp(2.35rem, 7vw, 3.85rem);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  letter-spacing: -.04em;
}
.result-amount small { margin-left: 4px; font-size: .38em; letter-spacing: 0; }
.result-copy { margin: 0; color: #c9def1; font-size: .88rem; }
.result-body { padding: 22px 25px 25px; }
.metric-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.metric { padding: 13px 12px; border: 1px solid var(--line); border-radius: 12px; background: #fbfdff; }
.metric span { display: block; min-height: 2.5em; color: var(--muted); font-size: .75rem; line-height: 1.35; }
.metric strong { display: block; margin-top: 5px; color: var(--navy); font-size: 1.05rem; font-variant-numeric: tabular-nums; }
.range-box { margin-top: 16px; padding: 15px; border-radius: 13px; background: var(--sky); }
.range-box h2 { margin: 0 0 7px; color: var(--blue); font-size: .9rem; }
.range-amount { margin: 0; color: var(--navy); font-size: 1.25rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.range-box p:last-child { margin: 7px 0 0; color: var(--muted); font-size: .78rem; }
.formula { margin-top: 17px; padding-top: 16px; border-top: 1px solid var(--line); }
.formula summary { color: var(--navy); font-size: .9rem; font-weight: 750; cursor: pointer; }
.formula-list { margin: 12px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.formula-list li { padding: 9px 11px; border-radius: 9px; background: #f5f8fb; color: var(--muted); font-size: .8rem; }
.formula-list b { color: var(--ink); }
.caution {
  width: min(1120px, calc(100% - 32px));
  margin: -30px auto 54px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}
.note-card { padding: 20px 21px; border: 1px solid var(--line); border-radius: 17px; background: rgba(255,255,255,.82); }
.note-card h2 { margin: 0 0 7px; color: var(--navy); font-size: 1rem; }
.note-card p { margin: 0; color: var(--muted); font-size: .86rem; }
.consultation-card { border-color: #b8d8f5; background: linear-gradient(145deg, #fff, #f2f8ff); }
.note-card .consultation-action {
  margin-top: 15px;
  padding: 13px 15px;
  border: 1px solid #c7dff6;
  border-radius: 12px;
  background: var(--sky);
  color: var(--ink);
  font-size: .9rem;
  line-height: 1.75;
}
footer { padding: 24px 16px 32px; border-top: 1px solid var(--line); color: var(--muted); text-align: center; font-size: .78rem; }

@media (max-width: 840px) {
  .layout { grid-template-columns: 1fr; }
  .result-card { position: static; }
  .caution { margin-top: -28px; grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .topbar-inner { width: min(100% - 24px, 1120px); padding-top: 21px; }
  .layout, .caution { width: min(100% - 20px, 1120px); }
  .layout { margin-top: 16px; gap: 15px; }
  .form-card, .result-body { padding: 19px 16px; }
  .result-top { padding: 21px 18px; }
  .field-grid { grid-template-columns: 1fr 1fr; gap: 12px 9px; }
  label { font-size: .82rem; }
  input[type="number"] { min-height: 47px; }
  .metric-grid { grid-template-columns: 1fr; }
  .metric { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
  .metric span { min-height: 0; }
  .metric strong { margin: 0; white-space: nowrap; }
  .actions { flex-direction: column; }
  .secondary { min-height: 46px; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}