.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--header-bg);
  backdrop-filter: blur(14px);
  border-bottom: 2px dashed var(--header-border);
}

.nav-wrap {
  width: var(--site-width);
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.brand {
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: clamp(0.7rem, 1.4vw, 0.9rem);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  white-space: nowrap;
}

.brand-mark {
  position: relative;
  inline-size: 1.7rem;
  block-size: 1.7rem;
  background: transparent;
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  top: 0.18rem;
  width: 0.95rem;
  height: 0.95rem;
  border: 3px solid var(--primary);
  border-radius: 999px;
  box-shadow: none;
}

.brand-mark::before {
  left: 0;
}

.brand-mark::after {
  right: 0;
  border-color: var(--secondary);
  box-shadow: 0 0 14px rgba(241, 143, 1, 0.24);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-link {
  font-family: var(--font-head);
  font-size: 0.9rem;
  padding: 0.52rem 0.8rem;
  border-radius: 999px;
  color: var(--text-dim);
  border: 1px solid transparent;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.is-active {
  color: var(--text);
  background: var(--nav-hover-bg);
  border-color: var(--nav-hover-border);
}

.nav-toggle {
  display: none;
  inline-size: 2.3rem;
  block-size: 2.3rem;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
}

.theme-toggle {
  font-family: var(--font-head);
}

.hero {
  padding: clamp(2rem, 4vw, 3rem) 0 var(--space-7);
}

.hero-layout {
  display: block;
}

.hero-panel {
  background: var(--panel-bg);
  border: 2px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow);
  margin-top: var(--space-5);
  max-width: 500px;
}

.hero h1 {
  max-width: none;
}

.hero p {
  max-width: none;
  text-align: justify;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.btn {
  font-family: var(--font-head);
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.9rem 1.15rem;
  border-radius: 999px;
  border: 2px solid var(--line);
  transition: transform 0.24s ease, background-color 0.24s ease, border-color 0.24s ease;
  cursor: pointer;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

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

.btn-secondary {
  color: var(--btn-secondary-text);
  background: var(--btn-secondary-bg);
}

.btn-ghost {
  color: var(--text);
  border-color: var(--line);
  background: var(--btn-ghost-bg);
}

.card {
  position: relative;
  border-radius: var(--radius-md);
  border: 2px solid var(--line);
  background: var(--card-bg);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.26s ease, border-color 0.26s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(14, 124, 123, 0.8);
}

.card ul {
  margin: 0 0 var(--space-4);
  padding-left: 1.1rem;
  color: var(--text-dim);
}

.card li {
  margin-bottom: 0.35rem;
}

.grid-4 .card .btn {
  margin-top: auto;
  align-self: flex-start;
}

.icon-pill {
  inline-size: 2.4rem;
  block-size: 2.4rem;
  border-radius: 0.8rem;
  display: grid;
  place-items: center;
  margin-bottom: var(--space-3);
  font-family: var(--font-head);
  font-size: 0.9rem;
  color: var(--icon-pill-text);
  border: 2px solid var(--line);
  background: var(--icon-pill-bg);
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--text-dim);
  font-size: var(--caption);
  font-family: var(--font-head);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.logo-strip {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: var(--space-2);
}

.logo-chip {
  font-family: var(--font-head);
  border: 2px dashed var(--line);
  border-radius: 999px;
  padding: 0.62rem 0.7rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

th,
td {
  padding: 0.95rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

th {
  font-family: var(--font-head);
  color: var(--text);
  background: var(--table-head-bg);
}

details {
  border-top: 1px solid var(--line);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
}

summary {
  cursor: pointer;
  font-family: var(--font-head);
  color: var(--primary);
}

.article-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr 1fr;
  gap: var(--space-4);
}

.article-feature {
  grid-row: span 2;
}

.timeline {
  position: relative;
  margin-left: 0.5rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.2rem;
  top: 0.3rem;
  bottom: 0.3rem;
  width: 2px;
  background: linear-gradient(var(--primary), var(--secondary));
}

.timeline-item {
  position: relative;
  padding-left: 1.8rem;
  margin-bottom: var(--space-4);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -0.03rem;
  top: 0.35rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--secondary);
}

.form-grid {
  display: grid;
  gap: var(--space-3);
}

.field {
  display: grid;
  gap: 0.45rem;
}

label {
  font-family: var(--font-head);
  font-size: 0.82rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-dim);
}

input,
select,
textarea {
  border: 2px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--input-bg);
  color: var(--text);
  padding: 0.78rem;
  font-family: var(--font-body);
}

textarea {
  min-height: 130px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid rgba(14, 124, 123, 0.25);
  border-color: rgba(14, 124, 123, 0.85);
}

input:required:invalid,
select:required:invalid,
textarea:required:invalid {
  border-color: rgba(255, 107, 107, 0.72);
}

input:required:valid,
select:required:valid,
textarea:required:valid {
  border-color: rgba(91, 242, 166, 0.72);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-4);
}

@media (max-width: 980px) {
  .hero-layout,
  .article-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .article-feature {
    grid-row: auto;
  }

  .logo-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.6rem 3vw 1rem;
    background: var(--mobile-nav-bg);
    border-bottom: 2px dashed var(--line);
  }

  .site-header.nav-open .nav-links {
    display: flex;
  }

  .nav-link {
    border-radius: var(--radius-sm);
    padding: 0.72rem 0.85rem;
  }
}

@media (max-width: 640px) {
  .logo-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}