:root {
      --ink: #14212d;
      --soft-ink: #32475a;
      --muted: #667789;
      --line: #dbe6ee;
      --paper: #f6f9fb;
      --white: #ffffff;
      --aqua: #008f9f;
      --aqua-dark: #006978;
      --blue: #0b64c0;
      --rose: #be4b70;
      --gold: #b8860b;
      --shadow: 0 18px 45px rgba(21, 35, 48, .12);
      --radius: 14px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }

    body {
      margin: 0;
      font-family: Inter, Arial, Helvetica, sans-serif;
      color: var(--ink);
      background: var(--paper);
      line-height: 1.62;
    }

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    a { color: inherit; }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 30;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding: 14px clamp(18px, 4vw, 54px);
      background: rgba(255, 255, 255, .94);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(16px);
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 900;
      letter-spacing: .08em;
      text-transform: uppercase;
      color: var(--ink);
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--aqua), var(--blue));
      border-radius: 8px;
      font-size: 13px;
      font-weight: 900;
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 18px;
      color: var(--muted);
      font-size: 14px;
      font-weight: 700;
    }

    .nav a { text-decoration: none; }
    .nav a:hover { color: var(--aqua-dark); }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 0 20px;
      border: 1px solid transparent;
      border-radius: 8px;
      background: var(--ink);
      color: #fff;
      text-decoration: none;
      font-weight: 900;
      transition: .25s ease;
      cursor: pointer;
    }

    .button:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(20, 33, 45, .18);
    }

    .button.secondary {
      background: #fff;
      color: var(--ink);
      border-color: var(--line);
    }

    .button.aqua {
      background: linear-gradient(135deg, var(--aqua), var(--blue));
    }

    .hero {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(360px, .86fr);
      gap: clamp(28px, 5vw, 70px);
      align-items: center;
      padding: clamp(42px, 7vw, 86px) clamp(18px, 4vw, 54px) 46px;
      background:
        radial-gradient(circle at 8% 8%, rgba(0, 143, 159, .12), transparent 32%),
        linear-gradient(90deg, #ffffff 0%, #f4f8fa 100%);
    }

    .eyebrow {
      margin: 0 0 12px;
      color: var(--aqua-dark);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: .13em;
      text-transform: uppercase;
    }

    h1, h2, h3 {
      line-height: 1.12;
      margin: 0;
    }

    h1 {
      max-width: 820px;
      font-size: clamp(42px, 5.6vw, 76px);
      letter-spacing: -1.4px;
      color: var(--ink);
    }

    h2 {
      font-size: clamp(30px, 3.8vw, 50px);
      letter-spacing: -.6px;
    }

    h3 { font-size: 22px; }

    .lead {
      max-width: 720px;
      margin: 22px 0 0;
      color: var(--muted);
      font-size: clamp(18px, 2vw, 22px);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 30px;
    }

    .trust-row {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      margin-top: 34px;
      max-width: 900px;
    }

    .metric {
      padding: 16px;
      border: 1px solid var(--line);
      background: rgba(255, 255, 255, .78);
      border-radius: var(--radius);
    }

    .metric strong {
      display: block;
      font-size: 22px;
      color: var(--ink);
      line-height: 1.1;
    }

    .metric span {
      color: var(--muted);
      font-size: 13px;
      font-weight: 700;
    }

    .image-panel {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .image-box {
      position: relative;
      width: 100%;
      overflow: hidden;
      background: #fff;
    }

    .ratio-4-3 { aspect-ratio: 4 / 3; }
    .ratio-16-9 { aspect-ratio: 16 / 9; }
    .ratio-3-2 { aspect-ratio: 3 / 2; }

    .image-box img {
      width: 100%;
      height: 100%;
      object-position: center;
    }

    .image-box.cover img { object-fit: cover; }
    .image-box.contain img {
      object-fit: contain;
      padding: 12px;
      background: #fff;
    }

    .image-caption {
      padding: 12px 16px 15px;
      border-top: 1px solid var(--line);
      color: var(--muted);
      font-size: 13px;
    }

    .image-caption strong { color: var(--ink); }

    section {
      padding: clamp(42px, 6vw, 78px) clamp(18px, 4vw, 54px);
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 28px;
    }

    .section-head h2 { max-width: 760px; }

    .section-head p {
      max-width: 540px;
      margin: 0;
      color: var(--muted);
      font-size: 17px;
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
    }

    .card {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 24px;
      min-height: 178px;
    }

    .card h3 {
      margin-bottom: 10px;
      color: var(--ink);
    }

    .card p {
      color: var(--muted);
      margin: 0;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      margin-bottom: 14px;
      padding: 0 11px;
      border-radius: 999px;
      background: #eef8f9;
      color: var(--aqua-dark);
      font-size: 12px;
      font-weight: 900;
      text-transform: uppercase;
      letter-spacing: .08em;
    }

    .principle {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 22px;
      align-items: stretch;
      background: #fff;
      border-block: 1px solid var(--line);
    }

    .principle-text { align-self: center; }
    .principle-text .lead { font-size: 20px; }

    .principle-list {
      margin: 26px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 12px;
    }

    .principle-list li {
      padding: 16px 18px;
      background: #f7fbfc;
      border: 1px solid var(--line);
      border-radius: 10px;
      color: var(--soft-ink);
      font-weight: 700;
    }

    .gallery {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 16px;
    }

    .detail-grid {
      display: grid;
      gap: 16px;
    }

    .spec-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: 0 10px 26px rgba(21, 35, 48, .06);
    }

    .spec-table th,
    .spec-table td {
      padding: 16px 18px;
      border-bottom: 1px solid var(--line);
      text-align: left;
      vertical-align: top;
      color: var(--soft-ink);
    }

    .spec-table th {
      background: #eef4f6;
      color: var(--ink);
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: .08em;
    }

    .spec-table tr:last-child td { border-bottom: 0; }
    .spec-table td:first-child {
      font-weight: 900;
      color: var(--ink);
    }

    .process {
      display: grid;
      grid-template-columns: repeat(6, minmax(0, 1fr));
      gap: 12px;
      counter-reset: step;
    }

    .step {
      min-height: 156px;
      padding: 18px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      counter-increment: step;
    }

    .step::before {
      content: counter(step, decimal-leading-zero);
      display: block;
      margin-bottom: 18px;
      color: var(--rose);
      font-weight: 900;
      letter-spacing: .08em;
    }

    .step strong {
      display: block;
      margin-bottom: 8px;
      color: var(--ink);
    }

    .step span {
      color: var(--muted);
      font-size: 14px;
    }

    .notice {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
    }

    .notice .card { border-top: 4px solid var(--gold); }

    .faq details {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 18px 20px;
      margin-bottom: 10px;
    }

    .faq summary {
      cursor: pointer;
      font-weight: 900;
      color: var(--ink);
    }

    .faq p {
      margin: 12px 0 0;
      color: var(--muted);
    }

    .price-box {
      margin-top: 26px;
      padding: 22px;
      border-radius: var(--radius);
      border: 1px solid rgba(0, 143, 159, .28);
      background: linear-gradient(135deg, rgba(0, 143, 159, .08), rgba(11, 100, 192, .08));
    }

    .price-box strong {
      display: block;
      font-size: 34px;
      line-height: 1;
      color: var(--aqua-dark);
      margin-bottom: 6px;
    }

    .price-box span {
      color: var(--muted);
      font-weight: 700;
    }

    .cta {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: center;
      gap: 24px;
      margin: 0 clamp(18px, 4vw, 54px) 54px;
      padding: clamp(30px, 4vw, 46px);
      background:
        radial-gradient(circle at right top, rgba(0, 143, 159, .28), transparent 38%),
        linear-gradient(135deg, var(--ink), #223648);
      color: #fff;
      border-radius: var(--radius);
    }

    .cta h2 { color: #fff; }

    .cta p {
      margin: 12px 0 0;
      color: rgba(255, 255, 255, .76);
    }

    footer {
      padding: 28px clamp(18px, 4vw, 54px);
      color: var(--muted);
      border-top: 1px solid var(--line);
      background: #fff;
      font-size: 13px;
    }

    @media (max-width: 1040px) {
      .hero,
      .principle,
      .gallery,
      .cta {
        grid-template-columns: 1fr;
      }

      .grid,
      .notice {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .trust-row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

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

    @media (max-width: 760px) {
      .topbar { align-items: flex-start; }
      .nav { display: none; }

      .trust-row,
      .grid,
      .notice,
      .process {
        grid-template-columns: 1fr;
      }

      .section-head { display: block; }
      .section-head p { margin-top: 14px; }

      .hero { padding-top: 34px; }

      h1 {
        font-size: 36px;
        letter-spacing: -.8px;
      }

      .lead { font-size: 17px; }

      .button,
      .cta .button {
        width: 100%;
      }

      .image-box {
        aspect-ratio: auto;
      }

      .image-box img {
        height: auto;
        object-fit: contain;
      }

      .spec-table,
      .spec-table thead,
      .spec-table tbody,
      .spec-table th,
      .spec-table td,
      .spec-table tr {
        display: block;
      }

      .spec-table thead { display: none; }

      .spec-table tr {
        border-bottom: 1px solid var(--line);
        padding: 12px 0;
      }

      .spec-table tr:last-child { border-bottom: 0; }

      .spec-table td {
        border-bottom: 0;
        padding: 9px 16px;
      }

      .spec-table td::before {
        content: attr(data-label);
        display: block;
        margin-bottom: 3px;
        font-size: 11px;
        letter-spacing: .08em;
        text-transform: uppercase;
        color: var(--aqua-dark);
        font-weight: 900;
      }
    }