:root {
  color-scheme: light;
  --bg: #f6f7f4;
  --surface: #ffffff;
  --surface-soft: #eef3f6;
  --text: #172027;
  --muted: #5d6974;
  --line: #d9e0e4;
  --primary: #186a78;
  --primary-dark: #0e4f5c;
  --focus: #d54f2f;
  --shadow: 0 18px 40px rgba(33, 43, 52, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(24, 106, 120, 0.1), transparent 34%),
    linear-gradient(45deg, rgba(213, 79, 47, 0.08), transparent 42%),
    var(--bg);
  color: var(--text);
  font-family:
    "Microsoft JhengHei",
    "PingFang TC",
    "Noto Sans TC",
    system-ui,
    sans-serif;
}

a {
  color: inherit;
}

.page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0 28px;
}

.eyebrow,
.carrier-kicker {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(2.25rem, 5vw, 4.4rem);
  line-height: 1.05;
}

.intro {
  max-width: 620px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.privacy-note {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-top: 8px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--primary-dark);
  font-weight: 700;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #38a169;
  box-shadow: 0 0 0 4px rgba(56, 161, 105, 0.15);
}

.lookup-panel {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.ship-panel {
  margin-top: 18px;
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 18px;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: 1.45rem;
}

.section-heading p {
  max-width: 430px;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.6;
}

.tracking-form {
  display: grid;
  grid-template-columns: minmax(160px, 220px) minmax(260px, 1fr) auto;
  gap: 14px;
  align-items: end;
}

.shipping-form {
  display: grid;
  grid-template-columns: minmax(200px, 320px) auto;
  gap: 14px;
  align-items: end;
}

.field {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.field span {
  font-size: 0.92rem;
  font-weight: 700;
}

select,
input {
  width: 100%;
  min-height: 48px;
  border: 1px solid #c7d0d5;
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font: inherit;
  font-size: 1rem;
}

select {
  padding: 0 38px 0 14px;
}

input {
  padding: 0 14px;
  text-transform: uppercase;
}

select:focus,
input:focus,
a:focus,
button:focus {
  outline: 3px solid rgba(213, 79, 47, 0.35);
  outline-offset: 2px;
}

.primary-action {
  min-height: 48px;
  border: 0;
  border-radius: 8px;
  padding: 0 22px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  white-space: nowrap;
}

.secondary-action {
  min-height: 48px;
  border: 1px solid var(--primary);
  border-radius: 8px;
  padding: 0 22px;
  background: #fff;
  color: var(--primary-dark);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  white-space: nowrap;
}

.primary-action:hover,
.secondary-action:hover {
  background: var(--primary-dark);
  color: #fff;
}

.form-message {
  min-height: 24px;
  margin: 12px 0 0;
  color: var(--focus);
  font-weight: 700;
}

.privacy-copy {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.carrier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.carrier-card {
  display: flex;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.card-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.carrier-card h2 {
  margin-bottom: 0;
  font-size: 1.4rem;
}

.carrier-card p:not(.carrier-kicker) {
  color: var(--muted);
  line-height: 1.65;
}

.carrier-mark {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 8px;
  color: #fff;
  font-size: 0.92rem;
  font-weight: 900;
}

.ems-card .carrier-mark {
  background: #1e6ea8;
}

.tcat-card .carrier-mark {
  background: #242424;
}

.fedex-card .carrier-mark {
  background: #6a3fa0;
}

.sf-card .carrier-mark {
  background: #c9272d;
}

.carrier-links {
  margin-top: auto;
}

.carrier-links summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
  color: var(--text);
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}

.carrier-links summary::-webkit-details-marker {
  display: none;
}

.carrier-links summary::after {
  content: ">";
  color: var(--primary);
  font-weight: 900;
  transition: transform 0.18s ease;
}

.carrier-links[open] summary {
  border-color: var(--primary);
  background: #fff;
}

.carrier-links[open] summary::after {
  transform: rotate(90deg);
}

.link-list {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.link-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
  font-weight: 800;
  text-decoration: none;
}

.link-list a::after {
  content: ">";
  color: var(--primary);
  font-weight: 900;
}

.link-list a:hover {
  border-color: var(--primary);
  background: #fff;
}

@media (max-width: 860px) {
  .hero,
  .section-heading {
    display: block;
  }

  .privacy-note {
    margin-top: 18px;
  }

  .section-heading p {
    margin-top: 8px;
  }

  .tracking-form,
  .shipping-form,
  .carrier-grid {
    grid-template-columns: 1fr;
  }

  .carrier-card {
    min-height: auto;
  }
}

@media (max-width: 520px) {
  .page-shell {
    width: min(100% - 22px, 1120px);
    padding-top: 18px;
  }

  h1 {
    font-size: 2.25rem;
  }

  .lookup-panel,
  .carrier-card {
    padding: 18px;
  }
}