:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #111827;
  --primary-text: #ffffff;
  --soft: #f9fafb;
  --warning-bg: #fff7ed;
  --warning-border: #fdba74;
  --success-bg: #ecfdf5;
  --success-border: #86efac;
  --shadow: 0 10px 30px rgba(17, 24, 39, 0.06);
  --radius: 18px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, Arial, sans-serif;
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  color: var(--text);
}

.topbar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 20px 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.lang-switch {
  display: flex;
  gap: 8px;
}

.lang-btn, .btn, .option-btn, .select, .input {
  font: inherit;
}

.lang-btn {
  border: 1px solid var(--border);
  background: white;
  padding: 10px 14px;
  border-radius: 999px;
  cursor: pointer;
}

.lang-btn.active {
  background: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8px 20px 24px;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 24px;
}

.card, .hero, .question-card, .result-card, .review-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero, .question-card, .result-card, .review-card {
  padding: 28px;
}

.hero-tag {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 12px;
}

.hero h1, .question-card h2, .review-card h2, .result-card h2 {
  margin: 0 0 10px;
  line-height: 1.05;
}

.hero h1 { font-size: 38px; }

.hero p { color: var(--muted); line-height: 1.7; }

.feature-grid, .form-grid, .result-grid {
  display: grid;
  gap: 14px;
}

.feature-grid { grid-template-columns: repeat(3, 1fr); margin: 24px 0; }

.feature {
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 16px;
  background: white;
}

.feature h4 { margin: 0 0 6px; font-size: 16px; }
.feature p { margin: 0; color: var(--muted); font-size: 14px; }

.notice {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--soft);
  padding: 16px;
  margin: 18px 0;
}

.notice strong {
  display: block;
  margin-bottom: 6px;
}

.form-grid {
  grid-template-columns: repeat(2, 1fr);
  margin: 20px 0;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group.full { grid-column: 1 / -1; }

label {
  font-weight: 600;
  font-size: 14px;
}

.input, .select {
  width: 100%;
  border: 1px solid var(--border);
  background: white;
  border-radius: 16px;
  padding: 13px 14px;
}

.hint {
  font-size: 12px;
  color: var(--muted);
}

.inline {
  display: flex;
  gap: 10px;
  align-items: center;
}

.btn {
  border: 1px solid var(--border);
  background: white;
  color: var(--text);
  border-radius: 16px;
  padding: 12px 16px;
  cursor: pointer;
  transition: 0.2s ease;
}

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

.btn.primary {
  background: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
}

.btn.secondary { background: #f3f4f6; }

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.footer-row, .nav-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-top: 20px;
  flex-wrap: wrap;
}

.sync-msg, .copy-msg, .promo-msg {
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
}

.question-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}

.badge {
  display: inline-block;
  padding: 8px 12px;
  background: #f3f4f6;
  border-radius: 999px;
  font-size: 13px;
}

.progress {
  height: 8px;
  background: #eef2f7;
  border-radius: 999px;
  overflow: hidden;
  margin: 16px 0 22px;
}

.progress-bar {
  height: 100%;
  background: var(--primary);
  width: 0%;
  transition: width 0.25s ease;
}

.option-list {
  display: grid;
  gap: 12px;
}

.option-btn {
  width: 100%;
  text-align: left;
  border: 1px solid var(--border);
  background: white;
  border-radius: 18px;
  padding: 16px;
  cursor: pointer;
  transition: 0.2s ease;
}

.option-btn.selected {
  border-color: var(--primary);
  background: #f8fafc;
}

.result-grid {
  grid-template-columns: repeat(2, 1fr);
  margin: 18px 0;
}

.result-box, .alert-box, .skeleton-box, .saved-item {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  background: white;
}

.alert-box.warning {
  background: var(--warning-bg);
  border-color: var(--warning-border);
}

.alert-box.success {
  background: var(--success-bg);
  border-color: var(--success-border);
}

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.card { padding: 20px; }
.card h3 { margin-top: 0; }

.stat {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--soft);
  padding: 14px;
  margin-top: 10px;
}

.stat span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 4px;
}

.saved-results {
  display: grid;
  gap: 10px;
}

.saved-item small {
  display: block;
  color: var(--muted);
  margin-top: 6px;
}

.empty {
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 20px;
  padding: 18px 20px 28px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.footer-link-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  text-decoration: underline;
  cursor: pointer;
}

.footer-copy {
  color: var(--muted);
  font-size: 14px;
}

.gate-overlay,
.legal-modal {
  position: fixed;
  inset: 0;
  background: rgba(17, 24, 39, 0.52);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 999;
}

.gate-card,
.legal-card {
  width: min(720px, 100%);
  background: white;
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.gate-card h2,
.legal-card h3 {
  margin-top: 0;
}

.legal-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.legal-content {
  color: var(--text);
  line-height: 1.7;
  white-space: pre-wrap;
}

.hidden {
  display: none !important;
}

@media (max-width: 980px) {
  .container {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .form-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 30px;
  }
}