*, *::before, *::after { box-sizing: border-box; }

  :root {
    --ink: #0b2831;
    --ink-2: #1d4651;
    --muted: #4a7480;
    --teal: #0e9aa7;
    --teal-d: #0a7c88;
    --cyan: #22c7d6;
    --line: rgba(13, 43, 51, 0.09);
    --card: #ffffff;
  }

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 84px;
    -webkit-text-size-adjust: 100%;
  }

  body {
    margin: 0;
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.72;
    color: #163a44;
    background-color: #f4fbfc;
    background-image:
      radial-gradient(880px 520px at 10% -8%, rgba(34, 199, 214, 0.20), transparent 62%),
      radial-gradient(760px 500px at 92% 2%, rgba(14, 154, 167, 0.14), transparent 64%),
      radial-gradient(700px 620px at 50% 96%, rgba(34, 199, 214, 0.10), transparent 66%),
      linear-gradient(180deg, #f7fdfe 0%, #f2fafb 46%, #eef7f9 100%);
    -webkit-font-smoothing: antialiased;
  }

  h1, h2, h3, h4 {
    color: var(--ink);
    line-height: 1.32;
    margin: 0;
    font-weight: 800;
  }

  h1 { font-size: clamp(27px, 4.2vw, 44px); letter-spacing: -0.02em; }
  h2 { font-size: clamp(22px, 2.9vw, 31px); letter-spacing: -0.01em; }
  h3 { font-size: 18px; font-weight: 700; }

  p { margin: 0; }
  a { color: var(--teal-d); text-decoration: none; }
  img { max-width: 100%; height: auto; }

  .wrap {
    width: 100%;
    max-width: 1180px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  /* ---------- Header ---------- */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(255, 255, 255, 0.88);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
  }

  .nav-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    min-height: 66px;
    position: relative;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    font-weight: 700;
    flex: 0 0 auto;
  }
  .brand img { max-height: 34px; width: auto; display: block; }
  .brand-name { font-size: 17px; letter-spacing: 0.01em; white-space: nowrap; }

  .nav-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex-wrap: nowrap;
  }
  .nav-links a {
    display: block;
    padding: 9px 13px;
    font-size: 14.5px;
    color: #23505c;
    border-radius: 8px;
    white-space: nowrap;
    transition: color 0.22s ease, background 0.22s ease;
  }
  .nav-links a:hover { color: var(--teal-d); background: rgba(14, 154, 167, 0.09); }

  .nav-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }

  .nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 40px;
    height: 38px;
    padding: 0 9px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #fff;
    cursor: pointer;
  }
  .nav-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    border-radius: 2px;
    background: var(--ink-2);
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .site-header.nav-open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .site-header.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .site-header.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  /* ---------- Buttons ---------- */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 12px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.26s ease, background 0.26s ease, color 0.26s ease, border-color 0.26s ease;
  }
  .btn-primary {
    background: linear-gradient(135deg, #0e9aa7, #17b8c6);
    color: #ffffff;
    box-shadow: 0 12px 24px -14px rgba(14, 154, 167, 0.9);
  }
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 30px -15px rgba(14, 154, 167, 0.95);
    color: #ffffff;
  }
  .btn-primary:active { transform: translateY(0) scale(0.985); }
  .btn-ghost {
    background: #ffffff;
    color: #0b6b78;
    border-color: rgba(14, 154, 167, 0.38);
  }
  .btn-ghost:hover { background: rgba(14, 154, 167, 0.09); transform: translateY(-2px); color: #0b6b78; }
  .btn-sm { padding: 9px 16px; font-size: 14px; border-radius: 10px; }

  /* ---------- Sections ---------- */
  main { display: block; }
  section { padding: 60px 0; position: relative; }
  section + section { border-top: 1px solid rgba(13, 43, 51, 0.055); }

  .section-head { max-width: 780px; margin-bottom: 32px; }
  .section-head h2 { margin: 0 0 14px; }
  .section-head h2::after {
    content: "";
    display: block;
    width: 46px;
    height: 3px;
    border-radius: 3px;
    margin-top: 14px;
    background: linear-gradient(90deg, #0e9aa7, #5fe0ea);
  }
  .section-head p { color: var(--muted); font-size: 15.5px; }

  /* ---------- Hero ---------- */
  .hero { padding: 54px 0 34px; }
  .hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 44px;
    align-items: center;
  }

  .eyebrow {
    display: inline-block;
    padding: 6px 14px;
    margin-bottom: 18px;
    border-radius: 999px;
    font-size: 13.5px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: #0a7381;
    background: rgba(14, 154, 167, 0.1);
    border: 1px solid rgba(14, 154, 167, 0.22);
  }

  .hero h1 { margin: 0 0 16px; }
  .hero-lead {
    font-size: 16.5px;
    color: #35606b;
    max-width: 560px;
    margin: 0 0 26px;
  }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

  .hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 20px;
    list-style: none;
    margin: 28px 0 0;
    padding: 0;
    font-size: 14px;
    color: #43707b;
  }
  .hero-tags li { display: inline-flex; align-items: center; gap: 7px; }
  .hero-tags li::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0e9aa7, #4fd7e3);
    flex: 0 0 auto;
  }

  .model-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    padding: 30px 24px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid rgba(14, 154, 167, 0.2);
    box-shadow: 0 30px 62px -42px rgba(11, 124, 136, 0.95);
  }
  .model-cloud span {
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 13.5px;
    color: #0b6b78;
    background: rgba(14, 154, 167, 0.08);
    border: 1px solid rgba(14, 154, 167, 0.17);
    transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
    animation: drift 6.5s ease-in-out infinite;
  }
  .model-cloud span:nth-child(2n) { animation-delay: -1.6s; }
  .model-cloud span:nth-child(3n) { animation-delay: -3.2s; }
  .model-cloud span:hover {
    background: rgba(14, 154, 167, 0.2);
    color: #07535e;
    border-color: rgba(14, 154, 167, 0.36);
  }

  @keyframes drift {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
  }

  .hero-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-top: 42px;
  }
  .stat {
    padding: 20px 16px;
    text-align: center;
    border-radius: 16px;
    background: #ffffff;
    border: 1px solid var(--line);
    box-shadow: 0 16px 34px -30px rgba(11, 124, 136, 0.9);
    transition: transform 0.28s ease, box-shadow 0.28s ease;
  }
  .stat:hover { transform: translateY(-4px); box-shadow: 0 22px 40px -26px rgba(11, 124, 136, 0.7); }
  .stat-num {
    display: block;
    font-size: 25px;
    font-weight: 800;
    color: var(--teal-d);
    letter-spacing: -0.01em;
  }
  .stat-label { font-size: 13.5px; color: var(--muted); }

  /* ---------- Grids & Cards ---------- */
  .grid-2, .grid-3, .grid-4 { display: grid; gap: 18px; align-items: stretch; }
  .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 9px;
    padding: 24px 22px;
    border-radius: 18px;
    background: var(--card);
    border: 1px solid var(--line);
    box-shadow: 0 16px 36px -32px rgba(11, 124, 136, 0.95);
    transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
  }
  .card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 22px;
    width: 0;
    height: 3px;
    border-radius: 0 0 3px 3px;
    background: linear-gradient(90deg, #0e9aa7, #5fe0ea);
    transition: width 0.32s ease;
  }
  .card:hover {
    transform: translateY(-4px);
    border-color: rgba(14, 154, 167, 0.32);
    box-shadow: 0 24px 46px -30px rgba(11, 124, 136, 0.75);
  }
  .card:hover::before { width: 64px; }

  .card h3 { margin: 0; }
  .card p { color: var(--muted); font-size: 14.5px; margin: 0; }

  .card-tag {
    align-self: flex-start;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12.5px;
    font-weight: 600;
    color: #0a7381;
    background: rgba(14, 154, 167, 0.1);
    border: 1px solid rgba(14, 154, 167, 0.18);
  }

  /* ---------- Timeline ---------- */
  .timeline {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
    counter-reset: step;
  }
  .step {
    position: relative;
    padding: 22px 18px 20px;
    border-radius: 16px;
    background: #ffffff;
    border: 1px solid var(--line);
    box-shadow: 0 16px 34px -32px rgba(11, 124, 136, 0.95);
    transition: transform 0.28s ease, box-shadow 0.28s ease;
  }
  .step:hover { transform: translateY(-4px); box-shadow: 0 22px 42px -30px rgba(11, 124, 136, 0.7); }
  .step-num {
    display: inline-block;
    margin-bottom: 10px;
    font-size: 13px;
    font-weight: 700;
    color: var(--teal-d);
    letter-spacing: 0.04em;
  }
  .step h3 { font-size: 16px; margin-bottom: 6px; }
  .step p { font-size: 14px; color: var(--muted); }

  /* ---------- Tables ---------- */
  .table-wrap {
    overflow-x: auto;
    border-radius: 16px;
    border: 1px solid var(--line);
    background: #ffffff;
    box-shadow: 0 18px 40px -34px rgba(11, 124, 136, 0.95);
    -webkit-overflow-scrolling: touch;
  }
  table { width: 100%; border-collapse: collapse; min-width: 700px; font-size: 14.5px; }
  thead th {
    padding: 15px 16px;
    text-align: left;
    font-weight: 700;
    color: #0a5f6b;
    background: rgba(14, 154, 167, 0.1);
    white-space: nowrap;
  }
  tbody td {
    padding: 14px 16px;
    border-top: 1px solid rgba(13, 43, 51, 0.07);
    color: #2b515c;
    vertical-align: top;
  }
  tbody tr:hover { background: rgba(14, 154, 167, 0.045); }
  .td-strong { color: #0a6f7c; font-weight: 700; }
  .table-note { margin-top: 14px; font-size: 13.5px; color: var(--muted); }

  /* ---------- Score ---------- */
  .score-grid {
    display: grid;
    grid-template-columns: minmax(0, 268px) minmax(0, 1fr);
    gap: 18px;
    margin-bottom: 22px;
    align-items: stretch;
  }
  .score-box {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    padding: 28px 24px;
    border-radius: 20px;
    color: #ffffff;
    background: linear-gradient(150deg, #0a7c88 0%, #109dab 52%, #23c3d1 100%);
    box-shadow: 0 26px 50px -30px rgba(10, 124, 136, 0.95);
  }
  .score-label { font-size: 14px; color: rgba(255, 255, 255, 0.88); }
  .score-value { font-size: 48px; font-weight: 800; line-height: 1; letter-spacing: -0.02em; color: #ffffff; }
  .score-value span { font-size: 18px; font-weight: 600; margin-left: 4px; color: rgba(255, 255, 255, 0.82); }
  .score-stars { font-size: 19px; letter-spacing: 3px; color: #ffe6a6; line-height: 1.2; }
  .score-note { font-size: 13.5px; color: rgba(255, 255, 255, 0.9); }

  .score-points {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 18px;
    padding: 24px;
    border-radius: 20px;
    background: #ffffff;
    border: 1px solid var(--line);
    box-shadow: 0 18px 40px -34px rgba(11, 124, 136, 0.95);
    list-style: none;
    margin: 0;
  }
  .score-points li {
    position: relative;
    padding-left: 22px;
    font-size: 14.5px;
    color: #2b515c;
  }
  .score-points li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0e9aa7, #4fd7e3);
  }

  /* ---------- Reviews ---------- */
  .review {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 24px 22px;
    border-radius: 18px;
    background: #ffffff;
    border: 1px solid var(--line);
    border-top: 3px solid rgba(14, 154, 167, 0.5);
    box-shadow: 0 16px 36px -32px rgba(11, 124, 136, 0.95);
    transition: transform 0.28s ease, box-shadow 0.28s ease, border-top-color 0.28s ease;
  }
  .review:hover {
    transform: translateY(-4px);
    border-top-color: #0e9aa7;
    box-shadow: 0 24px 44px -30px rgba(11, 124, 136, 0.72);
  }
  .review-text { font-size: 14.5px; color: #2f545f; margin: 0; }
  .review-role {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--teal-d);
    margin: 0;
    padding-top: 4px;
    border-top: 1px dashed rgba(13, 43, 51, 0.12);
  }

  /* ---------- Cases ---------- */
  .case-card {
    padding: 0;
    overflow: hidden;
    border-radius: 18px;
    background: #ffffff;
    border: 1px solid var(--line);
    box-shadow: 0 18px 40px -34px rgba(11, 124, 136, 0.95);
    transition: transform 0.28s ease, box-shadow 0.28s ease;
  }
  .case-card:hover { transform: translateY(-4px); box-shadow: 0 26px 48px -32px rgba(11, 124, 136, 0.72); }
  .case-figure {
    padding: 10px;
    background: linear-gradient(160deg, rgba(14, 154, 167, 0.1), rgba(34, 199, 214, 0.04));
  }
  .case-figure img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 12px;
  }
  .case-body { padding: 16px 20px 20px; }
  .case-body h3 { font-size: 17px; margin-bottom: 6px; }
  .case-body p { font-size: 14px; color: var(--muted); margin: 0; }

  .gallery {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-top: 20px;
  }
  .gallery figure {
    margin: 0;
    padding: 8px;
    border-radius: 14px;
    background: #ffffff;
    border: 1px solid var(--line);
    box-shadow: 0 14px 30px -30px rgba(11, 124, 136, 0.95);
    transition: transform 0.28s ease, box-shadow 0.28s ease;
  }
  .gallery figure:hover { transform: translateY(-3px); box-shadow: 0 20px 36px -28px rgba(11, 124, 136, 0.72); }
  .gallery img { display: block; width: 100%; height: auto; border-radius: 9px; }

  /* ---------- Articles ---------- */
  .article-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
  .article-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    border-radius: 14px;
    background: #ffffff;
    border: 1px solid var(--line);
    color: #1a4450;
    font-size: 15px;
    font-weight: 600;
    transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease, color 0.24s ease;
  }
  .article-list a::after {
    content: "";
    width: 9px;
    height: 9px;
    border-top: 2px solid currentColor;
    border-right: 2px solid currentColor;
    transform: rotate(45deg);
    flex: 0 0 auto;
    opacity: 0.6;
  }
  .article-list a:hover {
    transform: translateX(4px);
    color: var(--teal-d);
    border-color: rgba(14, 154, 167, 0.34);
    box-shadow: 0 16px 32px -28px rgba(11, 124, 136, 0.9);
  }

  /* ---------- FAQ ---------- */
  .faq { display: grid; gap: 12px; }
  .faq-item {
    border-radius: 14px;
    background: #ffffff;
    border: 1px solid var(--line);
    box-shadow: 0 14px 32px -32px rgba(11, 124, 136, 0.95);
    transition: border-color 0.24s ease, box-shadow 0.24s ease;
  }
  .faq-item[open] { border-color: rgba(14, 154, 167, 0.35); box-shadow: 0 18px 38px -30px rgba(11, 124, 136, 0.8); }
  .faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 17px 20px;
    font-size: 15px;
    font-weight: 700;
    color: #143a45;
    cursor: pointer;
    list-style: none;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary::after {
    content: "+";
    flex: 0 0 auto;
    width: 24px;
    height: 24px;
    line-height: 22px;
    text-align: center;
    border-radius: 50%;
    font-size: 17px;
    font-weight: 700;
    color: var(--teal-d);
    background: rgba(14, 154, 167, 0.1);
    transition: transform 0.25s ease, background 0.25s ease;
  }
  .faq-item[open] summary::after { content: "−"; background: rgba(14, 154, 167, 0.2); }
  .faq-item > p {
    padding: 0 20px 18px;
    margin: 0;
    font-size: 14.5px;
    color: var(--muted);
  }

  /* ---------- Form ---------- */
  .form-card {
    padding: 30px;
    border-radius: 22px;
    background: #ffffff;
    border: 1px solid var(--line);
    box-shadow: 0 24px 54px -38px rgba(11, 124, 136, 0.95);
  }
  .form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .field { display: flex; flex-direction: column; gap: 8px; }
  .field-full { grid-column: 1 / -1; }
  .field label { font-size: 14px; font-weight: 600; color: #17414c; }
  .field input,
  .field select,
  .field textarea {
    width: 100%;
    padding: 11px 14px;
    font-family: inherit;
    font-size: 15px;
    color: #12313a;
    background: #fbfeff;
    border: 1px solid rgba(13, 43, 51, 0.16);
    border-radius: 12px;
    transition: border-color 0.22s ease, box-shadow 0.22s ease;
  }
  .field textarea { min-height: 118px; resize: vertical; }
  .field input::placeholder,
  .field textarea::placeholder { color: #92aab1; }
  .field input:focus,
  .field select:focus,
  .field textarea:focus {
    outline: none;
    border-color: #16b6c4;
    box-shadow: 0 0 0 3px rgba(22, 182, 196, 0.16);
  }
  .form-actions {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 4px;
  }
  .form-tip { font-size: 13.5px; color: var(--muted); margin: 0; }

  /* ---------- Contact ---------- */
  .contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 18px;
    align-items: start;
  }
  .contact-list { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 12px; }
  .contact-list li {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 11px;
    border-bottom: 1px dashed rgba(13, 43, 51, 0.1);
    font-size: 14.5px;
    color: #1a4450;
  }
  .contact-list li:last-child { border-bottom: none; padding-bottom: 0; }
  .contact-list span { color: var(--muted); font-size: 13.5px; flex: 0 0 auto; }
  .qr-card { align-items: center; text-align: center; }
  .qr-card img {
    display: block;
    width: 100%;
    max-width: 176px;
    height: auto;
    margin: 0 auto 10px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #ffffff;
  }
  .qr-card p { font-size: 14px; color: var(--muted); }

  /* ---------- Footer ---------- */
  .site-footer {
    margin-top: 0;
    padding: 46px 0 26px;
    background: #eaf6f8;
    border-top: 1px solid rgba(13, 43, 51, 0.1);
    color: #1a4450;
  }
  .footer-top {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
    gap: 34px;
    align-items: start;
  }
  .footer-brand { display: flex; flex-direction: column; gap: 12px; }
  .footer-brand p { font-size: 14px; color: #3b6470; margin: 0; }
  .footer-site { font-size: 14px; font-weight: 600; color: var(--teal-d); }
  .footer-site:hover { color: #07535e; }
  .footer-title { font-size: 15px; font-weight: 700; color: #0b2831; margin: 0 0 12px; }
  .links-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
  .links-cloud a {
    display: inline-block;
    padding: 7px 13px;
    font-size: 13.5px;
    color: #1d4651;
    background: #ffffff;
    border: 1px solid rgba(13, 43, 51, 0.1);
    border-radius: 999px;
    transition: color 0.22s ease, border-color 0.22s ease, background 0.22s ease, transform 0.22s ease;
  }
  .links-cloud a:hover {
    color: var(--teal-d);
    border-color: rgba(14, 154, 167, 0.4);
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
  }
  .footer-bottom {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid rgba(13, 43, 51, 0.1);
    font-size: 13.5px;
    color: #3b6470;
  }

  /* ---------- Float dock ---------- */
  .float-dock {
    position: fixed;
    right: 16px;
    bottom: 22px;
    z-index: 70;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .dock-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    padding: 0;
    font-family: inherit;
    font-size: 13px;
    font-weight: 700;
    color: #ffffff;
    background: linear-gradient(140deg, #0e9aa7, #17b8c6);
    border: none;
    border-radius: 14px;
    box-shadow: 0 16px 30px -16px rgba(14, 154, 167, 0.95);
    cursor: pointer;
    transition: transform 0.22s ease, box-shadow 0.22s ease, opacity 0.25s ease;
  }
  .dock-btn:hover { transform: translateY(-3px); box-shadow: 0 20px 34px -16px rgba(14, 154, 167, 0.98); }
  .dock-btn:active { transform: translateY(0) scale(0.96); }
  #backTop { opacity: 0; visibility: hidden; }
  #backTop.show { opacity: 1; visibility: visible; }

  /* ---------- Reveal animation ---------- */
  .reveal { transition: opacity 0.62s ease, transform 0.62s ease; }
  .js-anim .reveal { opacity: 0; transform: translateY(18px); }
  .js-anim .reveal.is-in { opacity: 1; transform: translateY(0); }

  /* ---------- Responsive ---------- */
  @media (max-width: 1040px) {
    .nav-toggle { display: flex; }
    .nav-links {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      flex-direction: column;
      align-items: stretch;
      padding: 8px 12px 16px;
      background: #ffffff;
      border-bottom: 1px solid var(--line);
      border-radius: 0 0 16px 16px;
      box-shadow: 0 22px 36px -24px rgba(13, 43, 51, 0.4);
    }
    .site-header.nav-open .nav-links { display: flex; }
    .nav-links a { padding: 12px 10px; border-bottom: 1px solid rgba(13, 43, 51, 0.07); border-radius: 0; }
    .nav-links a:last-child { border-bottom: none; }
  }

  @media (max-width: 980px) {
    .hero-grid { grid-template-columns: 1fr; gap: 32px; }
    .model-cloud { padding: 24px 18px; }
    .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .score-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; gap: 26px; }
    .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  }

  @media (max-width: 760px) {
    section { padding: 46px 0; }
    .hero { padding: 38px 0 26px; }
    .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 30px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .timeline { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .form-card { padding: 22px 18px; }
    .score-points { grid-template-columns: 1fr; padding: 20px; }
    .gallery { grid-template-columns: 1fr; }
    .nav-actions .btn { display: none; }
    .brand-name { font-size: 16px; }
    .hero-lead { font-size: 15.5px; }
  }

  @media (prefers-reduced-motion: reduce) {
    * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
    html { scroll-behavior: auto; }
    .js-anim .reveal { opacity: 1; transform: none; }
  }