:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --surface: #ffffff;
  --surface-soft: #f1f5f9;
  --text: #111827;
  --muted: #64748b;
  --line: #dbe3ef;
  --brand: #0f766e;
  --brand-strong: #115e59;
  --accent: #2563eb;
  --warn: #b45309;
  --danger: #b91c1c;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
select {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(219, 227, 239, 0.92);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
}

.nav {
  max-width: 1180px;
  min-height: 64px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff;
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 15px;
}

.nav-links a:hover {
  color: var(--brand);
}

.lang-link {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: #fff;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero {
  padding: 34px 0 42px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: 28px;
  align-items: start;
}

.hero-copy {
  padding-top: 18px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  color: var(--brand);
  font-weight: 700;
  font-size: 14px;
}

h1 {
  margin: 0;
  font-size: 44px;
  line-height: 1.12;
  letter-spacing: 0;
}

.hero-copy p {
  max-width: 620px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.pill {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.7);
  color: #334155;
  font-size: 14px;
}

.tool-panel,
.section-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.tool-panel {
  overflow: hidden;
}

.tool-top {
  padding: 20px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: end;
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.08), rgba(37, 99, 235, 0.08)),
    #fff;
  border-bottom: 1px solid var(--line);
}

.field label {
  display: block;
  margin-bottom: 7px;
  color: #475569;
  font-size: 14px;
  font-weight: 700;
}

select {
  width: 100%;
  min-height: 46px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 0 12px;
  color: var(--text);
  background: #fff;
}

.primary-btn,
.secondary-btn,
.ghost-btn,
.danger-btn {
  min-height: 42px;
  border: 0;
  border-radius: 8px;
  padding: 0 14px;
  cursor: pointer;
  font-weight: 750;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
}

.primary-btn {
  background: var(--brand);
  color: #fff;
}

.primary-btn:hover {
  background: var(--brand-strong);
}

.secondary-btn {
  background: var(--accent);
  color: #fff;
}

.ghost-btn {
  border: 1px solid var(--line);
  background: #fff;
  color: #334155;
}

.danger-btn {
  background: #fee2e2;
  color: var(--danger);
}

.result-area {
  padding: 20px;
}

.result-head,
.saved-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.result-head h2,
.saved-head h2,
.section h2 {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.empty-state {
  min-height: 180px;
  border: 1px dashed #cbd5e1;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: var(--muted);
  text-align: center;
  padding: 20px;
  background: #f8fafc;
}

.address-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.address-item {
  min-height: 72px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: #fbfdff;
  cursor: pointer;
}

.address-item.full {
  grid-column: 1 / -1;
}

.address-item span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.address-item strong {
  display: block;
  margin-top: 4px;
  color: var(--text);
  word-break: break-word;
}

.saved-panel {
  margin-top: 22px;
  padding: 20px;
}

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

.saved-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.saved-card strong,
.saved-card span {
  display: block;
}

.saved-card span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 46px 0;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.feature-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #ccfbf1;
  color: var(--brand-strong);
  font-weight: 900;
}

.feature h3 {
  margin: 12px 0 6px;
  font-size: 18px;
}

.feature p,
.content-page p,
.content-page li {
  color: var(--muted);
}

.content-page {
  max-width: 860px;
  padding: 46px 20px 70px;
}

.content-page h1 {
  font-size: 38px;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  background: #fff;
}

.faq details + details {
  margin-top: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 800;
}

.notice {
  margin-top: 18px;
  padding: 12px 14px;
  border: 1px solid #fde68a;
  border-radius: 8px;
  background: #fffbeb;
  color: #92400e;
  font-size: 14px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  padding: 10px 14px;
  border-radius: 8px;
  background: #0f172a;
  color: #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 40;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

.site-footer {
  padding: 30px 0;
  background: #0f172a;
  color: #cbd5e1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 22px;
}

.site-footer h3,
.site-footer h4 {
  margin: 0 0 10px;
  color: #fff;
}

.site-footer a {
  display: block;
  margin: 6px 0;
  color: #cbd5e1;
}

.copyright {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid rgba(203, 213, 225, 0.18);
  color: #94a3b8;
  font-size: 14px;
}

@media (max-width: 920px) {
  .hero-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 36px;
  }

  .section-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 16px;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    padding-top: 20px;
  }

  h1,
  .content-page h1 {
    font-size: 30px;
  }

  .hero-copy p {
    font-size: 16px;
  }

  .tool-top,
  .address-grid,
  .section-grid {
    grid-template-columns: 1fr;
  }

  .tool-top {
    align-items: stretch;
  }

  .result-head,
  .saved-head,
  .saved-card {
    align-items: stretch;
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .actions button {
    flex: 1 1 130px;
  }
}