:root {
      --accent: #00aeef;
      --accent-dark: #047fb1;
      --ink: #24313f;
      --text: #415163;
      --muted: #708091;
      --line: #d9e5ed;
      --soft: #f4f8fb;
      --soft-2: #eaf5fb;
      --dark: #1d2b36;
      --white: #ffffff;
      --shadow: 0 18px 45px rgba(33, 49, 63, .12);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--text);
      font-family: Arial, sans-serif;
      font-size: 17px;
      line-height: 1.6;
      background: var(--white);
    }

    a { color: inherit; }
    img { display: block; max-width: 100%; height: auto; }
    .container { width: min(1160px, calc(100% - 32px)); margin: 0 auto; }

    .topbar {
      color: #dcecf4;
      background: var(--dark);
      font-size: 14px;
    }

    .topbar-row {
      min-height: 42px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255,255,255,.95);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(10px);
    }

    .header-row {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--ink);
      font-size: 21px;
      font-weight: 800;
      letter-spacing: 0;
      text-decoration: none;
      white-space: nowrap;
    }

    .brand img {
      width: 34px;
      height: 34px;
      flex: 0 0 auto;
    }

    .brand span { color: var(--accent-dark); }
    .nav {
      display: flex;
      align-items: center;
      gap: 18px;
      color: var(--muted);
      font-size: 15px;
    }

    .nav a { text-decoration: none; }
    .nav a:hover { color: var(--accent-dark); }
    .phone {
      color: var(--accent-dark);
      font-weight: 800;
      white-space: nowrap;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 50px;
      padding: 13px 20px;
      border: 1px solid var(--accent);
      border-radius: 6px;
      color: #fff;
      background: var(--accent);
      font-weight: 800;
      text-decoration: none;
      transition: transform .2s ease, background .2s ease, border-color .2s ease;
    }

    .btn:hover {
      transform: translateY(-1px);
      background: var(--accent-dark);
      border-color: var(--accent-dark);
    }

    .btn.secondary {
      color: var(--accent-dark);
      background: #fff;
    }

    .hero {
      position: relative;
      min-height: 690px;
      display: grid;
      align-items: center;
      padding: 64px 0;
      background:
        linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.94) 46%, rgba(255,255,255,.28) 100%),
        url("assets/hero-ac-service.svg") center right / cover no-repeat;
    }

    .hero-content { max-width: 650px; }
    .eyebrow {
      margin: 0 0 14px;
      color: var(--accent-dark);
      font-size: 14px;
      font-weight: 800;
      text-transform: uppercase;
    }

    h1, h2, h3, p { margin-top: 0; }
    h1 {
      margin-bottom: 18px;
      color: var(--ink);
      font-size: clamp(34px, 5vw, 64px);
      line-height: 1.05;
      letter-spacing: 0;
    }

    .lead {
      max-width: 590px;
      margin-bottom: 28px;
      color: #334353;
      font-size: 21px;
      line-height: 1.45;
    }

    .actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 28px;
    }

    .hero-facts {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
      max-width: 640px;
    }

    .fact {
      min-height: 104px;
      padding: 16px;
      border: 1px solid rgba(0,174,239,.22);
      border-radius: 8px;
      background: rgba(255,255,255,.9);
    }

    .fact strong {
      display: block;
      color: var(--ink);
      font-size: 19px;
      line-height: 1.2;
    }

    .fact span {
      display: block;
      margin-top: 6px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.35;
    }

    section { padding: 76px 0; }
    .section-head {
      max-width: 780px;
      margin-bottom: 34px;
    }

    .section-title {
      margin-bottom: 14px;
      color: var(--ink);
      font-size: clamp(28px, 3vw, 44px);
      line-height: 1.14;
      letter-spacing: 0;
    }

    .section-subtitle {
      color: var(--muted);
      font-size: 18px;
      margin-bottom: 0;
    }

    .band { background: var(--soft); }
    .service-grid {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 38px;
      align-items: center;
    }

    .service-copy p {
      color: var(--text);
      font-size: 18px;
      margin-bottom: 18px;
    }

    .media {
      overflow: hidden;
      border-radius: 8px;
      box-shadow: var(--shadow);
      background: #dfeaf1;
    }

    .media img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }

    .check-list, .step-list {
      display: grid;
      gap: 12px;
      padding: 0;
      margin: 24px 0 0;
      list-style: none;
    }

    .check-list li {
      padding: 14px 16px;
      border-left: 4px solid var(--accent);
      border-radius: 6px;
      background: var(--soft);
    }

    .cards {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .card {
      position: relative;
      min-height: 210px;
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
    }

    .card-icon {
      position: absolute;
      top: 20px;
      right: 20px;
      width: 48px;
      height: 48px;
    }

    .card b {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      margin-bottom: 16px;
      border-radius: 6px;
      color: #fff;
      background: var(--accent);
    }

    .card h3 {
      margin-bottom: 9px;
      color: var(--ink);
      font-size: 21px;
      line-height: 1.25;
    }

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

    .benefit-grid {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 18px;
    }

    .benefit-card {
      min-height: 238px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      grid-column: span 4;
      padding: 24px;
      border: 1px solid #edf2f5;
      border-radius: 8px;
      background: #f3f5f6;
    }

    .benefit-card.wide { grid-column: span 6; }
    .benefit-card.compact { min-height: 190px; }
    .benefit-card.featured {
      color: #fff;
      background: var(--dark);
      border-color: var(--dark);
    }

    .benefit-card.featured h3,
    .benefit-card.featured .benefit-num,
    .benefit-card.featured p { color: #fff; }

    .benefit-num {
      display: block;
      margin-bottom: 14px;
      color: var(--accent);
      font-size: 22px;
      font-weight: 800;
      line-height: 1;
    }

    .benefit-card h3 {
      margin-bottom: 18px;
      color: #4b4f54;
      font-size: 22px;
      line-height: 1.18;
    }

    .benefit-card p {
      margin-bottom: 0;
      color: #3f454b;
      font-size: 16px;
      line-height: 1.45;
    }

    .price-wrap {
      border: 1px solid var(--line);
      border-radius: 8px;
      overflow: hidden;
      background: #fff;
      box-shadow: 0 10px 30px rgba(33, 49, 63, .07);
    }

    .price-row {
      display: grid;
      grid-template-columns: 1fr 170px 160px;
      gap: 18px;
      align-items: center;
      padding: 22px;
    }

    .price-row + .price-row { border-top: 1px solid var(--line); }
    .price-head {
      color: #fff;
      background: var(--accent);
      font-weight: 800;
    }

    .price-row h3 {
      margin-bottom: 4px;
      color: var(--ink);
      font-size: 20px;
    }

    .price-row p {
      margin-bottom: 0;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.35;
    }

    .price-value {
      color: var(--ink);
      font-size: 21px;
      font-weight: 800;
      white-space: nowrap;
    }

    .note {
      margin-top: 16px;
      color: var(--muted);
      font-size: 15px;
    }

    .steps {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      counter-reset: steps;
    }

    .step {
      position: relative;
      min-height: 220px;
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
    }

    .step-icon {
      position: absolute;
      top: 22px;
      right: 22px;
      width: 48px;
      height: 48px;
    }

    .step::before {
      counter-increment: steps;
      content: "0" counter(steps);
      display: block;
      margin-bottom: 18px;
      color: var(--accent-dark);
      font-size: 28px;
      font-weight: 800;
      line-height: 1;
    }

    .step h3 {
      color: var(--ink);
      font-size: 20px;
      margin-bottom: 8px;
    }

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

    .specialist {
      display: grid;
      grid-template-columns: 310px 1fr;
      gap: 34px;
      align-items: center;
      padding: 30px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--soft);
    }

    .specialist img {
      width: 100%;
      aspect-ratio: 3 / 4;
      object-fit: cover;
      border-radius: 8px;
      box-shadow: var(--shadow);
    }

    .specialist h2 {
      margin-bottom: 8px;
      color: var(--ink);
      font-size: 38px;
    }

    .specialist p {
      color: var(--text);
      font-size: 18px;
    }

    .spec-list {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      padding: 0;
      margin: 22px 0 24px;
      list-style: none;
    }

    .spec-list li {
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
    }

    .spec-list strong {
      display: block;
      color: var(--ink);
    }

    .reviews {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .review {
      min-height: 260px;
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
    }

    .stars {
      color: #f7a600;
      font-size: 18px;
      letter-spacing: 0;
      margin-bottom: 12px;
    }

    .review p {
      color: var(--text);
      margin-bottom: 18px;
    }

    .review strong {
      display: block;
      color: var(--ink);
    }

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

    .faq {
      display: grid;
      gap: 12px;
    }

    details {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
    }

    summary {
      cursor: pointer;
      padding: 20px 22px;
      color: var(--ink);
      font-weight: 800;
      list-style: none;
    }

    summary::-webkit-details-marker { display: none; }
    details p {
      margin: 0;
      padding: 0 22px 20px;
      color: var(--muted);
    }

    .article {
      max-width: 900px;
    }

    .article h2 {
      margin: 34px 0 12px;
      color: var(--ink);
      font-size: 28px;
    }

    .article h2:first-child { margin-top: 0; }
    .article p { color: var(--text); }
    .article blockquote {
      margin: 24px 0;
      padding: 20px 22px;
      border-left: 4px solid var(--accent);
      border-radius: 6px;
      background: var(--soft);
      color: var(--ink);
      font-weight: 700;
    }

    .contacts {
      color: #fff;
      background: var(--dark);
    }

    .contacts .section-title,
    .contacts .section-subtitle { color: #fff; }

    .contact-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .contact-card {
      min-height: 150px;
      padding: 24px;
      border: 1px solid rgba(255,255,255,.16);
      border-radius: 8px;
      background: rgba(255,255,255,.07);
    }

    .contact-card h3 {
      margin-bottom: 10px;
      color: #a8dff6;
      font-size: 17px;
    }

    .contact-card p,
    .contact-card address {
      margin-bottom: 0;
      color: #fff;
      font-size: 21px;
      font-style: normal;
      font-weight: 800;
    }

    .contact-card a { color: #fff; text-decoration: none; }

    .footer {
      padding: 24px 0;
      color: var(--muted);
      text-align: center;
      font-size: 14px;
    }

    .wa-float {
      position: fixed;
      right: 18px;
      bottom: 18px;
      z-index: 30;
      width: 60px;
      height: 60px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      color: #fff;
      background: #25D366;
      box-shadow: 0 14px 32px rgba(0,0,0,.24);
      font-weight: 900;
      text-decoration: none;
    }

    @media (max-width: 940px) {
      .topbar-row { align-items: flex-start; flex-direction: column; padding: 10px 0; gap: 4px; }
      .header-row { align-items: flex-start; flex-direction: column; padding: 14px 0; }
      .nav { width: 100%; flex-wrap: wrap; gap: 12px 16px; }
      .hero { min-height: auto; padding: 46px 0 330px; background-position: center bottom; background-size: auto 350px; }
      .hero-facts, .service-grid, .cards, .steps, .specialist, .spec-list, .reviews, .contact-grid { grid-template-columns: 1fr; }
      .benefit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .benefit-card, .benefit-card.wide { grid-column: auto; }
      .price-row { grid-template-columns: 1fr; gap: 6px; }
      .price-head { display: none; }
      .specialist { padding: 18px; }
    }

    @media (max-width: 520px) {
      body { font-size: 16px; }
      .container { width: min(100% - 24px, 1160px); }
      .hero { padding-bottom: 270px; background-size: auto 285px; }
      .actions .btn { width: 100%; }
      section { padding: 56px 0; }
      .benefit-grid { grid-template-columns: 1fr; }
      .card, .benefit-card, .step, .review, .contact-card { padding: 20px; }
    }