:root {
  --bg: #0e1014;
  --surface: #171b21;
  --surface-strong: #1f252d;
  --surface-muted: #12161c;
  --text: #f5f7fb;
  --text-muted: #aeb7c6;
  --line: #2d3641;
  --accent: #ef9a52;
  --accent-strong: #ffb274;
  --danger: #ff7b7b;
  --success: #7ad5a2;
  --radius: 18px;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(circle at top right, rgba(239, 154, 82, 0.16), transparent 28rem),
    linear-gradient(180deg, #0e1014 0%, #11161c 100%);
  color: var(--text);
  font-family: "Noto Sans JP", "Inter", sans-serif;
}

a {
  color: inherit;
}

body {
  min-height: 100vh;
}

.shell {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  text-decoration: none;
}

.brand strong {
  letter-spacing: 0.08em;
}

.brand span {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

.lang-button {
  min-width: 48px;
  min-height: 34px;
  padding: 0 0.85rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font: inherit;
}

.lang-button.is-active {
  background: var(--accent);
  color: #20160d;
}

.lang-ja[hidden],
.lang-en[hidden] {
  display: none !important;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--surface-strong);
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  font: inherit;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #20160d;
}

.btn-ghost {
  border-color: var(--line);
  background: transparent;
}

.btn-danger {
  border-color: rgba(255, 123, 123, 0.4);
  color: var(--danger);
}

.hero-card,
.panel,
.plan-card,
.job-card,
.info-card,
.terms-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.015));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card,
.panel,
.terms-card {
  padding: 1.5rem;
}

.page-grid {
  display: grid;
  gap: 1rem;
  padding-bottom: 3rem;
}

.hero-card h1,
.panel h1,
.panel h2,
.terms-card h1 {
  margin: 0 0 0.75rem;
  line-height: 1.15;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.75rem;
}

.muted {
  color: var(--text-muted);
}

.form-grid {
  display: grid;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.45rem;
}

.field label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-muted);
  color: var(--text);
  padding: 0.9rem 1rem;
  font: inherit;
}

.field textarea {
  min-height: 160px;
  resize: vertical;
}

.field-inline {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.notice,
.status-box {
  border-radius: 14px;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
}

.notice.error,
.status-box.error {
  border-color: rgba(255, 123, 123, 0.35);
  color: #ffd1d1;
}

.notice.success,
.status-box.success {
  border-color: rgba(122, 213, 162, 0.35);
  color: #d7ffe7;
}

.plan-grid,
.info-grid,
.job-grid {
  display: grid;
  gap: 1rem;
}

.plan-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.plan-card,
.job-card,
.info-card {
  padding: 1.25rem;
}

.plan-price {
  font-size: 2rem;
  font-weight: 700;
}

.plan-card ul {
  padding-left: 1.2rem;
  color: var(--text-muted);
}

.info-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.terms-scroll {
  max-height: 360px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  background: rgba(255,255,255,0.02);
}

.terms-scroll pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
}

.footer {
  padding: 2rem 0 3rem;
  color: var(--text-muted);
  text-align: center;
}

@media (max-width: 720px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }
}