:root {
  color-scheme: light;
  --bg: #eef3f8;
  --panel: #ffffff;
  --panel-soft: #f8fbff;
  --text: #172033;
  --muted: #667085;
  --line: #d8e2ee;
  --primary: #1467b3;
  --primary-dark: #0f4f89;
  --success: #137a4d;
  --warning: #9a6500;
  --error: #b42318;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(20, 103, 179, 0.12), transparent 360px),
    linear-gradient(180deg, #f7faff 0, var(--bg) 420px);
  font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.site-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: #ffffff;
  background: var(--primary);
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 13px;
}

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

.nav a {
  min-height: 38px;
  display: inline-grid;
  place-items: center;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
}

.nav a.active,
.nav a:hover {
  border-color: rgba(20, 103, 179, 0.35);
  color: var(--primary);
  background: #ffffff;
}

.stack {
  display: grid;
  gap: 18px;
}

.stack.narrow {
  width: min(820px, 100%);
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
  align-items: stretch;
}

.compact-hero {
  grid-template-columns: minmax(0, 1fr) 280px;
}

.hero-copy,
.card,
.summary-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 18px 42px rgba(23, 32, 51, 0.08);
}

.hero-copy {
  padding: 34px;
}

.kicker,
.section-head span {
  color: var(--primary);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 12px;
  font-size: 42px;
  line-height: 1.08;
}

h2 {
  margin-bottom: 0;
  font-size: 22px;
  line-height: 1.25;
}

p {
  color: var(--muted);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.btn,
button {
  min-height: 46px;
  display: inline-grid;
  place-items: center;
  border: 0;
  border-radius: 10px;
  padding: 10px 16px;
  color: #ffffff;
  background: var(--primary);
  font: inherit;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.btn:hover,
button:hover {
  background: var(--primary-dark);
}

.btn.secondary {
  background: #1b7f5a;
}

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

button:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.summary-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.summary-card span {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.summary-card strong {
  margin-top: 8px;
  color: var(--text);
  font-size: 54px;
  line-height: 1;
}

.summary-card p {
  margin: 12px 0 0;
  font-size: 14px;
}

.grid-two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.card {
  padding: 24px;
}

.subtle-card {
  background: var(--panel-soft);
}

.section-head {
  margin-bottom: 18px;
}

.form {
  display: grid;
  gap: 14px;
}

label {
  font-size: 14px;
  font-weight: 800;
}

input,
textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  background: #ffffff;
  font: inherit;
  outline: none;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(20, 103, 179, 0.14);
}

.result {
  display: none;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #ffffff;
  line-height: 1.65;
  word-break: break-word;
}

.result.is-visible {
  display: block;
}

.result.success {
  border-color: rgba(19, 122, 77, 0.35);
  color: var(--success);
  background: rgba(19, 122, 77, 0.08);
}

.result.warning {
  border-color: rgba(154, 101, 0, 0.35);
  color: var(--warning);
  background: rgba(154, 101, 0, 0.08);
}

.result.error {
  border-color: rgba(180, 35, 24, 0.35);
  color: var(--error);
  background: rgba(180, 35, 24, 0.08);
}

.query-card {
  color: var(--text);
}

.query-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.query-code {
  font-weight: 900;
}

.query-type {
  margin-top: 4px;
  color: var(--muted);
  font-size: 14px;
}

.status-badge {
  display: inline-grid;
  place-items: center;
  min-height: 30px;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--success);
  background: rgba(19, 122, 77, 0.1);
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
}

.query-grid,
.notice-grid,
.seat-overview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.query-field,
.notice-item,
.seat-stat,
.seat-row {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #ffffff;
}

.query-field,
.notice-item,
.seat-stat {
  padding: 14px;
}

.query-field span,
.seat-stat span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.query-field strong,
.seat-stat strong {
  display: block;
  margin-top: 6px;
  color: var(--text);
  font-size: 18px;
}

.notice-item p {
  margin-bottom: 0;
  font-size: 14px;
}

.warning-item {
  border-color: rgba(154, 101, 0, 0.3);
  background: rgba(154, 101, 0, 0.06);
}

.danger-item {
  border-color: rgba(180, 35, 24, 0.3);
  background: rgba(180, 35, 24, 0.06);
}

.seat-table {
  display: grid;
  gap: 10px;
}

.seat-row {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) 180px 100px 90px;
  gap: 12px;
  align-items: center;
  padding: 14px;
}

.seat-row strong {
  display: block;
}

.seat-row span {
  color: var(--muted);
  font-size: 13px;
}

.seat-progress {
  height: 8px;
  margin-top: 6px;
  border-radius: 999px;
  background: #e7edf5;
  overflow: hidden;
}

.seat-progress i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--primary);
}

.seat-badge {
  display: inline-grid;
  place-items: center;
  min-height: 28px;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 13px;
  font-weight: 900;
}

.seat-badge.available {
  color: var(--success);
  background: rgba(19, 122, 77, 0.1);
}

.seat-badge.full {
  color: var(--error);
  background: rgba(180, 35, 24, 0.1);
}

@media (max-width: 820px) {
  .site-head,
  .hero,
  .compact-hero,
  .grid-two {
    grid-template-columns: 1fr;
  }

  .site-head {
    display: grid;
  }

  h1 {
    font-size: 32px;
  }

  .query-grid,
  .notice-grid,
  .seat-overview {
    grid-template-columns: 1fr;
  }

  .seat-row {
    grid-template-columns: 1fr;
  }
}