:root {
  --ink: #17211d;
  --muted: #647069;
  --paper: #f5f3ec;
  --surface: #fffdf8;
  --line: #d8d9d0;
  --green: #1e5c47;
  --green-soft: #dce9df;
  --amber: #d2a44f;
  --blue: #385d78;
  --shadow: 0 24px 70px rgba(35, 48, 41, 0.09);
  font-family: Inter, "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 87% 4%, rgba(210, 164, 79, 0.16), transparent 24rem),
    var(--paper);
}

button, input, select { font: inherit; }

.shell {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.hero {
  padding: 76px 0 58px;
  color: #f8f7f1;
  background:
    linear-gradient(125deg, rgba(14, 34, 27, 0.97), rgba(31, 82, 63, 0.94)),
    repeating-linear-gradient(90deg, transparent 0 79px, rgba(255,255,255,.04) 80px);
  border-bottom: 5px solid var(--amber);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, .65fr);
  gap: 72px;
  align-items: end;
}

.eyebrow, .step {
  margin: 0 0 14px;
  color: #e7bf71;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1 {
  max-width: 820px;
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(2.5rem, 6vw, 5.3rem);
  font-weight: 600;
  letter-spacing: -.055em;
  line-height: 1.03;
}

.lead {
  max-width: 660px;
  margin: 28px 0 0;
  color: #d5dfda;
  font-size: 1.06rem;
  line-height: 1.9;
}

.hero-note {
  padding: 26px;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.07);
  backdrop-filter: blur(8px);
}

.hero-note p {
  margin: 5px 0 20px;
  color: #e2e9e5;
  font-size: .9rem;
  line-height: 1.65;
}

.hero-note p:last-child { margin-bottom: 0; }
.note-number { color: #e7bf71; font-weight: 800; }

.main-grid {
  display: grid;
  grid-template-columns: minmax(360px, .85fr) minmax(430px, 1.15fr);
  gap: 28px;
  align-items: start;
  padding-block: 44px 64px;
}

.control-panel, .results-panel {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.control-panel { padding: 30px; }
.results-panel { padding: 30px; position: sticky; top: 20px; }

.section-heading h2 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 1.65rem;
  font-weight: 600;
}

.step { color: var(--green); margin-bottom: 6px; }

fieldset {
  margin: 30px 0 0;
  padding: 22px 0 0;
  border: 0;
  border-top: 1px solid var(--line);
}

legend {
  padding: 0 14px 0 0;
  color: var(--green);
  font-size: .87rem;
  font-weight: 800;
}

label > span:first-child {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: .82rem;
  font-weight: 700;
}

.two-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 17px 14px;
}

select, .input-with-unit {
  width: 100%;
  min-height: 44px;
  border: 1px solid #c9cdc5;
  border-radius: 3px;
  background: #fff;
}

select {
  padding: 0 12px;
  color: var(--ink);
}

.input-with-unit {
  display: flex;
  align-items: center;
  padding-right: 10px;
}

.input-with-unit:focus-within, select:focus {
  outline: 3px solid rgba(30, 92, 71, .16);
  border-color: var(--green);
}

.input-with-unit input {
  min-width: 0;
  flex: 1;
  padding: 10px 8px 10px 11px;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
}

.input-with-unit b {
  color: var(--muted);
  font-size: .72rem;
  white-space: nowrap;
}

.checkbox-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 18px;
  padding: 13px;
  border: 1px solid var(--line);
  background: #f8f7f1;
}

.checkbox-row input { margin-top: 3px; accent-color: var(--green); }
.checkbox-row span { color: var(--ink) !important; font-size: .82rem !important; line-height: 1.55; }

.secondary-button {
  margin-top: 24px;
  padding: 10px 15px;
  border: 1px solid var(--green);
  color: var(--green);
  background: transparent;
  cursor: pointer;
}

.secondary-button:hover { background: var(--green-soft); }
.form-error { color: #9b2f2f; font-weight: 700; }

.result-heading { margin-bottom: 23px; }

.verdict {
  padding: 22px 24px;
  border-left: 5px solid var(--green);
  background: var(--green-soft);
}

.verdict.is-self { border-color: var(--blue); background: #e3ebf0; }
.verdict.is-close { border-color: var(--amber); background: #f5ecd7; }

.verdict-label { margin: 0 0 5px; color: var(--muted); font-size: .75rem; font-weight: 800; letter-spacing: .08em; }
.verdict h3 { margin: 0; font-size: 1.4rem; }
.verdict p:last-child { margin: 8px 0 0; color: #46534c; line-height: 1.65; }

.result-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.result-card {
  padding: 22px;
  border: 1px solid var(--line);
  background: #fff;
}

.result-card > p { margin: 0 0 8px; color: var(--muted); font-weight: 800; }
.result-card > strong { display: block; font-size: clamp(1.65rem, 4vw, 2.25rem); letter-spacing: -.04em; }
.result-card > span { color: var(--muted); font-size: .75rem; }
.result-card dl { margin: 20px 0 0; }
.result-card dl div { display: flex; justify-content: space-between; gap: 10px; padding-top: 9px; border-top: 1px solid #ecece7; }
.result-card dt, .result-card dd { margin: 0; font-size: .78rem; }
.result-card dt { color: var(--muted); }
.result-card dd { font-weight: 800; }
.cloud-card { border-top: 4px solid var(--green); }
.self-card { border-top: 4px solid var(--blue); }

.difference-box {
  display: grid;
  grid-template-columns: .7fr 1.3fr;
  gap: 20px;
  align-items: center;
  margin-top: 14px;
  padding: 18px 22px;
  color: #f5f7f4;
  background: var(--ink);
}

.difference-box p { margin: 0; color: #b9c4be; font-size: .78rem; line-height: 1.6; }
.difference-box strong { display: block; margin-top: 3px; font-size: 1.35rem; }

.checklist { margin-top: 26px; }
.checklist h3 { margin: 0 0 10px; font-size: 1rem; }
.checklist ul { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.checklist li { position: relative; padding-left: 24px; color: #4a564f; font-size: .84rem; line-height: 1.55; }
.checklist li::before { content: ""; position: absolute; left: 0; top: .55em; width: 9px; height: 9px; border: 2px solid var(--amber); }

details { margin-top: 25px; border-top: 1px solid var(--line); }
summary { padding: 17px 0; color: var(--green); font-weight: 800; cursor: pointer; }
.detail-body { color: var(--muted); font-size: .82rem; line-height: 1.7; }

.footer {
  display: grid;
  grid-template-columns: 1.4fr .6fr;
  gap: 60px;
  padding-block: 36px 60px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.7;
}

.footer .eyebrow { color: var(--green); }
.source-list { display: flex; flex-wrap: wrap; gap: 9px 18px; margin: 0; padding: 0; list-style: none; }
.source-list a { color: var(--green); text-underline-offset: 3px; }

@media (max-width: 900px) {
  .hero-grid, .main-grid, .footer { grid-template-columns: 1fr; }
  .hero { padding-top: 52px; }
  .hero-note { max-width: 520px; }
  .results-panel { position: static; }
}

@media (max-width: 560px) {
  .shell { width: min(100% - 24px, 1180px); }
  .hero-grid { gap: 36px; }
  .main-grid { grid-template-columns: minmax(0, 1fr); padding-top: 22px; }
  .control-panel, .results-panel { padding: 22px 17px; }
  .two-columns, .result-cards, .difference-box { grid-template-columns: 1fr; }
  h1 { font-size: 2.55rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}