:root {
  --bg: #eef3ff;
  --bg-accent:
    radial-gradient(circle at top left, rgba(153, 168, 255, 0.42), transparent 34%),
    linear-gradient(180deg, #f6f8ff 0%, #eaf1ff 100%);
  --card: rgba(255, 255, 255, 0.94);
  --line: rgba(131, 145, 201, 0.18);
  --text: #1e2b53;
  --muted: #7080ac;
  --primary: #6574df;
  --primary-strong: #465ad6;
  --success-bg: #f2fbf5;
  --success-border: #c5f0d4;
  --success-text: #137444;
  --warm-bg: #fff8f2;
  --warm-border: #ffe4ce;
  --warm-text: #b74a18;
  --cool-bg: #f3fbff;
  --cool-border: #d8f1ff;
  --cool-text: #15648a;
  --violet-bg: #faf7ff;
  --violet-border: #e6ddff;
  --violet-text: #6e34c9;
  --hazard-bg: #f3f2ff;
  --hazard-text: #5a6bd4;
  --contains-bg: #fff2f3;
  --contains-text: #de3d4f;
  --extinguisher-bg: #eff8f1;
  --extinguisher-text: #1a854d;
  --composition-head-bg: #f1f0ff;
  --shadow: 0 24px 60px rgba(72, 89, 164, 0.14);
  --font-size-unified: 14px;
  --font-size-title: 28px;
  --font-size-subtitle: 18px;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: var(--font-size-unified);
  color: var(--text);
  background: var(--bg-accent);
}

.page-shell {
  width: 100%;
  max-width: 620px;
  margin: 0 auto;
  padding: 14px 16px 28px;
}

body.embedded .page-shell {
  padding-top: 8px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(104, 123, 216, 0.2);
  font-size: var(--font-size-unified);
  letter-spacing: 0.12em;
  color: var(--primary-strong);
}

.language-select-wrap {
  flex: 1;
  max-width: 220px;
}

.language-select {
  width: 100%;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(104, 123, 216, 0.24);
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  font-size: var(--font-size-unified);
  outline: none;
  box-shadow: 0 8px 24px rgba(109, 125, 204, 0.08);
}

.page-content {
  display: grid;
  gap: 12px;
}

.hero-card,
.content-card {
  border-radius: 22px;
  background: var(--card);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.hero-card {
  overflow: hidden;
  padding: 24px 16px;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.3), transparent 25%),
    linear-gradient(135deg, #6274de 0%, #8d86e8 100%);
  color: white;
  text-align: center;
}

.hero-card h1 {
  margin: 0;
  font-size: var(--font-size-title);
  font-weight: 800;
  letter-spacing: 0.03em;
}

.hero-subtitle {
  margin: 8px 0 0;
  font-size: var(--font-size-subtitle);
  font-weight: 700;
}

.content-card {
  padding: 16px 14px;
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.inner-head {
  margin-top: 18px;
}

.section-head h2 {
  margin: 0;
  color: var(--muted);
  font-size: var(--font-size-unified);
  font-weight: 700;
}

.manufacturer-info p,
.manufacturer-info a,
.info-label,
.info-value,
.parameter-card h3,
.parameter-card p,
.hazard-card strong,
.hazard-card small,
.hazard-card span,
.contains-card strong,
.contains-card small,
.ext-card span,
.cert-pill,
.footer-note {
  font-size: var(--font-size-unified);
}

.manufacturer-info h3 {
  margin: 0 0 8px;
  font-size: calc(var(--font-size-unified) * 1.9);
  line-height: 1.45;
  text-align: left;
}

.manufacturer-info p {
  margin: 8px 0;
  line-height: 1.6;
  word-break: break-word;
  text-align: left;
}

.manufacturer-info a {
  color: var(--primary-strong);
  text-decoration: none;
}

.info-grid,
.parameter-grid,
.double-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

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

.info-item {
  padding: 14px;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(245, 247, 255, 0.92), rgba(255, 255, 255, 0.98));
  border: 1px solid var(--line);
}

.info-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  line-height: 1.4;
}

.info-value {
  display: block;
  font-weight: 700;
  line-height: 1.5;
  word-break: break-word;
}

.parameter-card {
  padding: 16px 14px;
  border-radius: 16px;
  border: 1px solid transparent;
}

.parameter-card h3 {
  margin: 0 0 8px;
  line-height: 1.45;
}

.parameter-card p {
  margin: 0;
  font-weight: 800;
  line-height: 1.45;
  word-break: break-word;
}

.parameter-card.green {
  background: var(--success-bg);
  border-color: var(--success-border);
  color: var(--success-text);
}

.parameter-card.orange {
  background: var(--warm-bg);
  border-color: var(--warm-border);
  color: var(--warm-text);
}

.parameter-card.blue {
  background: var(--cool-bg);
  border-color: var(--cool-border);
  color: var(--cool-text);
}

.parameter-card.purple {
  background: var(--violet-bg);
  border-color: var(--violet-border);
  color: var(--violet-text);
}

.hazard-card,
.contains-card,
.ext-card {
  padding: 14px 12px;
  border-radius: 16px;
  text-align: center;
}

.hazard-card {
  background: var(--hazard-bg);
  color: var(--hazard-text);
}

.contains-card {
  background: var(--contains-bg);
  color: var(--contains-text);
}

.ext-card {
  background: var(--extinguisher-bg);
  color: var(--extinguisher-text);
}

.hazard-card strong,
.contains-card strong,
.ext-card strong {
  display: block;
  margin: 0 0 8px;
}

.hazard-card small,
.contains-card small {
  display: block;
  margin: 8px 0;
  line-height: 1.4;
}

.composition-table-wrap {
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.96);
}

.composition-table {
  width: 100%;
  border-collapse: collapse;
}

.composition-table th,
.composition-table td {
  padding: 14px 16px;
  font-size: var(--font-size-unified);
  border-bottom: 1px solid rgba(131, 145, 201, 0.14);
}

.composition-table th {
  background: var(--composition-head-bg);
  color: var(--primary-strong);
  font-weight: 700;
  text-align: left;
}

.composition-table td:last-child,
.composition-table th:last-child {
  text-align: right;
}

.composition-table tbody tr:last-child td {
  border-bottom: 0;
}

.certification-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: center;
  width: 100%;
  text-align: center;
}

.cert-pill {
  padding: 0;
  border-radius: 0;
  background: transparent;
  border: 0;
  font-weight: 700;
  color: var(--primary-strong);
}

.cert-logo-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 72px;
  min-height: 52px;
  padding: 0;
  background: transparent;
  border: 0;
}

.cert-logo {
  display: block;
  max-width: 100%;
  max-height: 42px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.footer-note {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.6;
  text-align: center;
}

.hidden {
  display: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 460px) {
  .page-shell {
    padding: 12px 10px 24px;
  }

  .manufacturer-info h3 {
    font-size: calc(var(--font-size-unified) * 1.45);
  }
}

@media (max-width: 380px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .language-select-wrap {
    max-width: none;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .info-grid,
  .parameter-grid,
  .double-grid,
  .triple-grid {
    grid-template-columns: 1fr;
  }

  .composition-table th,
  .composition-table td {
    padding: 12px 12px;
  }
}

@media (min-width: 621px) {
  .page-shell {
    max-width: 620px;
  }
}