:root {
    --bg-page: #f5f5f7;
    --bg-main: #ffffff;
    --bg-soft: #f9fafb;
    --border-subtle: #e5e7eb;
    --border-strong: #d1d5db;
    --text-main: #111827;
    --text-muted: #6b7280;
    --accent: #1d4ed8;
    --accent-soft: #e0ecff;
    --radius: 10px;
    --radius-lg: 18px;
    --transition: 0.18s ease-out;
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", sans-serif;
    background: var(--bg-page);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

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

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

 

  header {
    border-bottom: 1px solid var(--border-subtle);
    background: #ffffff;
    position: sticky;
    top: 0;
    z-index: 20;
  }

  .header-inner {
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 8px;
  }


  .logo-text-main {
    font-size: 0.94rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .logo-text-sub {
    font-size: 0.74rem;
    color: var(--text-muted);
  }

  .nav-top {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.9rem;
  }

  .nav-top a {
    padding-bottom: 2px;
    border-bottom: 1px solid transparent;
    color: #4b5563;
    text-transform: capitalize;
    transition: border-color var(--transition), color var(--transition);
  }

  .nav-top a:hover {
    border-color: var(--accent);
    color: var(--accent);
  }

  .nav-top .contact-active {
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 500;
  }

 

  .contact-hero {
    padding: 32px 0 22px;
  }

  .contact-breadcrumb {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 8px;
  }

  .contact-breadcrumb a {
    color: #4b5563;
  }

  .contact-breadcrumb a:hover {
    color: var(--accent);
    text-decoration: underline;
  }

  .contact-breadcrumb-sep {
    margin: 0 4px;
  }

  .contact-hero-title-row {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 6px;
  }

  .contact-hero-title {
    font-size: 1.7rem;
  }

  .contact-hero-label {
    font-size: 0.78rem;
    padding: 3px 9px;
    border-radius: 999px;
    background: #eff6ff;
    color: var(--accent);
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-weight: 600;
  }

  .contact-hero-subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    max-width: 640px;
  }

  .contact-hero-meta {
    margin-top: 10px;
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }

  .contact-hero-meta span::before {
    content: "•";
    margin-right: 6px;
    color: #9ca3af;
  }

  .contact-hero-meta span:first-child::before {
    content: "";
    margin-right: 0;
  }

 

  .contact-shell {
    margin-top: 18px;
    margin-bottom: 42px;
  }

  .contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.7fr) minmax(0, 0.55fr);
    gap: 22px;
    align-items: flex-start;
  }

 

  .contact-card {
    background: var(--bg-main);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    padding: 20px 20px 22px;
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.06);
    position: relative;
    overflow: hidden;
  }

  .contact-card::before {
    content: "";
    position: absolute;
    inset: -40%;
    background:
      radial-gradient(circle at 0% 0%, rgba(224, 236, 255, 0.65) 0, transparent 50%),
      radial-gradient(circle at 100% 100%, rgba(219, 234, 254, 0.5) 0, transparent 55%);
    opacity: 0.6;
    pointer-events: none;
  }

  .contact-card-inner {
    position: relative;
    z-index: 1;
  }

  .contact-card-title {
    font-size: 1.1rem;
    margin-bottom: 4px;
  }

  .contact-card-sub {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 16px;
  }

  .contact-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 0.9rem;
  }

  .field {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .field-label {
    font-size: 0.85rem;
    color: var(--text-muted);
  }

  .field-label span {
    color: #ef4444;
  }

  .field-input,
  .field-textarea,
  .field-select {
    border-radius: var(--radius);
    border: 1px solid var(--border-subtle);
    padding: 8px 9px;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    background: #ffffff;
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  }

  .field-input:focus,
  .field-textarea:focus,
  .field-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.2);
    background: #f9fafb;
  }

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

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

  .contact-note {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 2px;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 16px;
    border-radius: 999px;
    border: 1px solid var(--accent);
    background: var(--accent);
    color: #ffffff;
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  }

  .btn-primary:hover {
    background: #173ea8;
    border-color: #173ea8;
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.18);
    transform: translateY(-1px);
  }

 

  .contact-side {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .contact-panel {
    background: var(--bg-main);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    padding: 14px 14px 13px;
    font-size: 0.9rem;
  }

  .contact-panel-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
  }

  .contact-panel-sub {
    font-size: 0.84rem;
    color: var(--text-muted);
    margin-bottom: 8px;
  }

  .contact-email-block {
    font-size: 0.88rem;
    margin-bottom: 6px;
  }

  .contact-email-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    margin-bottom: 2px;
  }

  .contact-email {
    font-weight: 500;
    color: #111827;
  }

  .contact-email:hover {
    color: var(--accent);
  }

  .contact-hint-list {
    font-size: 0.84rem;
    color: var(--text-muted);
    padding-left: 16px;
    margin-top: 4px;
  }

  .contact-hint-list li {
    margin-bottom: 4px;
  }

  .contact-meta-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 12px;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 6px;
  }

  .contact-meta-item span {
    display: block;
  }

  .contact-meta-label {
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.75rem;
    color: #9ca3af;
  }

  .contact-meta-value {
    color: #111827;
  }

  .contact-tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 7px;
    border-radius: 999px;
    font-size: 0.78rem;
    background: #f3f4f6;
    color: #374151;
    margin-top: 4px;
  }

  .contact-tag--danger {
    background: #fee2e2;
    color: #b91c1c;
  }

 

  .contact-card,
  .contact-side {
    opacity: 0;
    transform: translateY(6px);
    animation: contactFadeIn 0.55s ease-out forwards;
  }

  .contact-card {
    animation-delay: 0.08s;
  }

  .contact-side {
    animation-delay: 0.14s;
  }

  @keyframes contactFadeIn {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

 

  footer {
    border-top: 1px solid var(--border-subtle);
    padding: 16px 0 18px;
    font-size: 0.8rem;
    color: var(--text-muted);
    background: #ffffff;
  }

  .footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
  }

  .footer-links {
    display: flex;
    gap: 12px;
  }

  .footer-links a:hover {
    color: var(--accent);
  }

 

  @media (max-width: 980px) {
    .contact-layout {
      grid-template-columns: minmax(0, 1fr);
    }
  }

  @media (max-width: 640px) {
    .header-inner {
      height: 60px;
    }

    .nav-top {
      display: none;
    }

    .contact-hero {
      padding-top: 24px;
    }

    .contact-card {
      padding: 18px 14px 20px;
    }
  }