* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f8f9fc;
    color: #1a1a2e;
    line-height: 1.8;
    font-size: 16px;
    scroll-behavior: smooth;
  }
  a {
    color: #e94560;
    text-decoration: none;
    transition: color 0.3s ease;
  }
  a:hover {
    color: #0f3460;
    text-decoration: underline;
  }
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }
  header {
    background: linear-gradient(135deg, #0f3460 0%, #16213e 100%);
    color: #fff;
    padding: 18px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
  }
  .my-logo {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 1.5px;
    color: #fff;
    text-shadow: 0 0 20px rgba(233,69,96,0.4);
    transition: transform 0.3s ease;
  }
  .my-logo:hover {
    transform: scale(1.03);
    color: #e94560;
    text-decoration: none;
  }
  .my-logo span {
    color: #e94560;
  }
  .nav-toggle {
    display: none;
    font-size: 28px;
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 6px;
    transition: background 0.3s;
  }
  .nav-toggle:hover {
    background: rgba(255,255,255,0.1);
  }
  nav {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
  }
  nav a {
    color: #e0e0e0;
    padding: 8px 16px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
  }
  nav a:hover {
    background: #e94560;
    color: #fff;
    text-decoration: none;
    transform: translateY(-2px);
  }
  .nav-search {
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    padding: 6px 14px;
    border-radius: 30px;
    font-size: 14px;
    width: 160px;
    transition: all 0.3s;
  }
  .nav-search::placeholder {
    color: rgba(255,255,255,0.6);
  }
  .nav-search:focus {
    outline: none;
    border-color: #e94560;
    background: rgba(255,255,255,0.18);
    width: 200px;
  }
  .breadcrumb {
    background: #fff;
    padding: 12px 0;
    border-bottom: 1px solid #e9ecef;
    font-size: 14px;
    color: #6c757d;
  }
  .breadcrumb a {
    color: #e94560;
  }
  .breadcrumb a:hover {
    color: #0f3460;
  }
  .breadcrumb span {
    margin: 0 6px;
    color: #adb5bd;
  }
  main {
    padding: 40px 0 60px;
  }
  h1 {
    font-size: 42px;
    font-weight: 800;
    color: #0f3460;
    margin-bottom: 20px;
    line-height: 1.2;
    border-left: 6px solid #e94560;
    padding-left: 20px;
  }
  h2 {
    font-size: 30px;
    font-weight: 700;
    color: #0f3460;
    margin: 50px 0 18px;
    padding-bottom: 10px;
    border-bottom: 3px solid #e94560;
    position: relative;
  }
  h2::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 80px;
    height: 3px;
    background: #0f3460;
  }
  h3 {
    font-size: 24px;
    font-weight: 600;
    color: #16213e;
    margin: 35px 0 14px;
  }
  h4 {
    font-size: 20px;
    font-weight: 600;
    color: #2d3436;
    margin: 25px 0 10px;
  }
  p {
    margin-bottom: 18px;
    color: #2d3436;
  }
  .highlight {
    background: linear-gradient(120deg, rgba(233,69,96,0.12) 0%, rgba(15,52,96,0.08) 100%);
    padding: 4px 10px;
    border-radius: 6px;
    font-weight: 600;
  }
  strong {
    color: #0f3460;
    font-weight: 700;
  }
  ul, ol {
    margin: 14px 0 22px 24px;
    color: #2d3436;
  }
  li {
    margin-bottom: 10px;
  }
  .featured-img {
    width: 100%;
    max-width: 900px;
    border-radius: 16px;
    margin: 30px 0 35px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    display: block;
  }
  .featured-img:hover {
    transform: scale(1.01);
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  }
  .spec-table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0 35px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  }
  .spec-table th {
    background: #0f3460;
    color: #fff;
    padding: 14px 20px;
    text-align: left;
    font-weight: 600;
    font-size: 16px;
  }
  .spec-table td {
    padding: 14px 20px;
    border-bottom: 1px solid #e9ecef;
    background: #fff;
  }
  .spec-table tr:hover td {
    background: #f1f3f9;
  }
  .spec-table .min-row td {
    background: #fff5f5;
  }
  .spec-table .min-row:hover td {
    background: #ffe0e0;
  }
  .spec-table .rec-row td {
    background: #f0faf0;
  }
  .spec-table .rec-row:hover td {
    background: #d8f0d8;
  }
  .info-card {
    background: #fff;
    border-radius: 16px;
    padding: 28px 32px;
    margin: 28px 0;
    box-shadow: 0 6px 30px rgba(0,0,0,0.06);
    border-left: 6px solid #e94560;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  .info-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.1);
  }
  .info-card h4 {
    margin-top: 0;
    color: #e94560;
  }
  .form-section {
    background: #fff;
    border-radius: 16px;
    padding: 32px 36px;
    margin: 40px 0;
    box-shadow: 0 8px 35px rgba(0,0,0,0.06);
    border: 1px solid #e9ecef;
  }
  .form-section h3 {
    margin-top: 0;
    color: #0f3460;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .form-group {
    margin-bottom: 20px;
  }
  .form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    color: #0f3460;
  }
  .form-group input,
  .form-group textarea,
  .form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s;
    background: #fafafa;
    font-family: inherit;
  }
  .form-group input:focus,
  .form-group textarea:focus,
  .form-group select:focus {
    outline: none;
    border-color: #e94560;
    background: #fff;
  }
  .form-group textarea {
    min-height: 120px;
    resize: vertical;
  }
  .btn {
    padding: 14px 36px;
    border: none;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
  }
  .btn-primary {
    background: #e94560;
    color: #fff;
  }
  .btn-primary:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(233,69,96,0.3);
  }
  .btn-secondary {
    background: #0f3460;
    color: #fff;
  }
  .btn-secondary:hover {
    background: #16213e;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(15,52,96,0.3);
  }
  .star-rating {
    display: flex;
    flex-direction: row-reverse;
    gap: 6px;
    font-size: 28px;
    justify-content: flex-end;
  }
  .star-rating input {
    display: none;
  }
  .star-rating label {
    cursor: pointer;
    color: #ddd;
    transition: color 0.2s;
  }
  .star-rating label:hover,
  .star-rating label:hover ~ label,
  .star-rating input:checked ~ label {
    color: #f1c40f;
  }
  footer {
    background: #0f3460;
    color: #e0e0e0;
    padding: 40px 0 20px;
    margin-top: 60px;
  }
  footer a {
    color: #f5a623;
  }
  footer a:hover {
    color: #fff;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
  }
  friend-link {
    display: block;
    background: rgba(255,255,255,0.06);
    border-radius: 12px;
    padding: 24px 28px;
    border: 1px solid rgba(255,255,255,0.08);
  }
  friend-link h4 {
    color: #f5a623;
    margin-bottom: 14px;
    font-size: 18px;
  }
  friend-link ul {
    list-style: none;
    margin: 0;
    padding: 0;
  }
  friend-link li {
    margin-bottom: 8px;
  }
  friend-link a {
    color: #e0e0e0;
    font-size: 14px;
  }
  friend-link a:hover {
    color: #f5a623;
    text-decoration: none;
  }
  .copyright {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 14px;
    color: #adb5bd;
  }
  .copyright strong {
    color: #f5a623;
  }
  .update-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #e94560;
    color: #fff;
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 25px;
  }
  @media (max-width: 992px) {
    h1 { font-size: 34px; }
    h2 { font-size: 26px; }
    h3 { font-size: 21px; }
    .header-inner { gap: 12px; }
  }
  @media (max-width: 768px) {
    .nav-toggle {
      display: block;
    }
    nav {
      display: none;
      width: 100%;
      flex-direction: column;
      gap: 4px;
      padding: 16px 0 8px;
      border-top: 1px solid rgba(255,255,255,0.1);
      margin-top: 12px;
    }
    nav.open {
      display: flex;
    }
    nav a {
      width: 100%;
      text-align: center;
      padding: 12px;
    }
    .nav-search {
      width: 100%;
    }
    h1 { font-size: 28px; padding-left: 14px; }
    h2 { font-size: 22px; }
    h3 { font-size: 19px; }
    h4 { font-size: 17px; }
    .spec-table {
      font-size: 14px;
    }
    .spec-table th,
    .spec-table td {
      padding: 10px 12px;
    }
    .form-section {
      padding: 20px 18px;
    }
    .info-card {
      padding: 20px 18px;
    }
    .footer-grid {
      grid-template-columns: 1fr;
    }
    .star-rating {
      font-size: 24px;
    }
  }
  @media (max-width: 480px) {
    .container { padding: 0 14px; }
    h1 { font-size: 24px; }
    .my-logo { font-size: 22px; }
    .btn { width: 100%; justify-content: center; }
  }
  .fade-in {
    animation: fadeIn 0.6s ease forwards;
  }
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #e94560;
    color: #fff;
    border: none;
    font-size: 22px;
    cursor: pointer;
    box-shadow: 0 6px 25px rgba(233,69,96,0.4);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
  .scroll-top.visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .scroll-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 35px rgba(233,69,96,0.5);
  }
  .comment-item {
    background: #f8f9fc;
    border-radius: 12px;
    padding: 18px 22px;
    margin-bottom: 14px;
    border-left: 4px solid #e94560;
  }
  .comment-item .meta {
    font-size: 13px;
    color: #6c757d;
    margin-bottom: 6px;
  }
  .comment-item .meta strong {
    color: #0f3460;
  }