:root {
      --ink: #101828;
      --muted: #5b6576;
      --paper: #f6f1e8;
      --paper-2: #efe6d6;
      --night: #07111f;
      --night-2: #0c1a2e;
      --gold: #c6a15b;
      --gold-2: #e8d09a;
      --cyan: #5ce1ff;
      --line: rgba(198, 161, 91, 0.35);
      --shadow: 0 24px 60px rgba(7, 17, 31, 0.18);
      --radius: 22px;
      --max: 1180px;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    section { scroll-margin-top: 88px; }
    body {
      font-family: "Be Vietnam Pro", "Segoe UI", sans-serif;
      color: var(--ink);
      background: var(--paper);
      line-height: 1.65;
    }
    img { max-width: 100%; display: block; }
    a { color: inherit; text-decoration: none; }
    button, .btn { font-family: inherit; cursor: pointer; }

    .wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 40;
      backdrop-filter: blur(16px);
      background: rgba(7, 17, 31, 0.86);
      border-bottom: 1px solid rgba(198, 161, 91, 0.18);
    }
    .topbar-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 72px;
      gap: 20px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
    }
    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background:
        radial-gradient(circle at 50% 22%, #7aefff 0 18%, transparent 19%),
        linear-gradient(180deg, #163056, #0a1a30);
      border: 1px solid var(--gold);
      position: relative;
      flex: none;
    }
    .brand-mark::after {
      content: "";
      position: absolute;
      left: 10px;
      right: 10px;
      bottom: 8px;
      height: 10px;
      border-radius: 8px 8px 4px 4px;
      background: var(--gold);
    }
    .brand strong { display: block; font-size: 15px; letter-spacing: 0.12em; text-transform: uppercase; }
    .brand span { display: block; font-size: 11px; color: var(--gold-2); letter-spacing: 0.04em; }

    nav { display: flex; align-items: center; gap: 26px; }
    nav a { color: rgba(255,255,255,.82); font-size: 14px; font-weight: 500; }
    nav a:hover { color: var(--gold-2); }
    .nav-cta {
      background: var(--gold);
      color: var(--night) !important;
      padding: 10px 16px;
      border-radius: 999px;
      font-weight: 600;
    }

    .menu-btn {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid rgba(255,255,255,.2);
      background: transparent;
      border-radius: 10px;
      color: #fff;
    }

    .hero {
      position: relative;
      min-height: 0;
      background: var(--night) url("images/den-led-mai-che.jpg") center/cover no-repeat;
      color: #fff;
      overflow: hidden;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(7,17,31,.92) 0%, rgba(7,17,31,.78) 42%, rgba(7,17,31,.88) 100%),
        radial-gradient(circle at 72% 40%, rgba(92,225,255,.22), transparent 36%);
    }
    .hero-inner {
      position: relative;
      z-index: 1;
      padding: 48px 0 72px;
      display: flex;
      flex-direction: column;
      gap: 28px;
    }
    .hero-top {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 18px;
    }
    .hero-copy { max-width: 52ch; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
    .hero-svcs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    .hero-svc {
      background: #fff;
      color: var(--ink);
      border-radius: 22px;
      overflow: hidden;
      display: grid;
      grid-template-rows: 210px 1fr;
      min-height: 360px;
      box-shadow: 0 18px 40px rgba(0,0,0,.28);
      transition: transform .2s ease;
    }
    .hero-svc:hover { transform: translateY(-2px); }
    .hero-svc img {
      width: 100%;
      height: 210px;
      object-fit: cover;
      background: #0c1a2e;
    }
    .hero-svc.lamp img { object-fit: contain; padding: 14px; }
    .hero-svc .txt { padding: 18px 20px 20px; }
    .hero-svc h2 {
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: 30px;
      font-weight: 600;
      line-height: 1.15;
      margin: 4px 0 8px;
    }
    .hero-svc p { color: var(--muted); font-size: 14px; }
    .hero-svc .more { color: #9a7428; font-weight: 600; font-size: 13px; margin-top: 12px; display: inline-block; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--gold-2);
      letter-spacing: 0.18em;
      text-transform: uppercase;
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 10px;
    }
    .eyebrow::before {
      content: "";
      width: 36px;
      height: 1px;
      background: var(--gold);
    }
    h1 {
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: clamp(36px, 5vw, 64px);
      line-height: 0.95;
      font-weight: 600;
      max-width: 22ch;
    }
    h1 em { font-style: italic; color: var(--cyan); }
    .hero p.lead {
      margin-top: 16px;
      max-width: 46ch;
      color: rgba(255,255,255,.84);
      font-size: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 52px;
      padding: 0 22px;
      border-radius: 999px;
      border: 0;
      font-weight: 600;
      font-size: 15px;
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .btn:hover { transform: translateY(-1px); }
    .btn:disabled { opacity: .6; transform: none; cursor: wait; }
    .btn-gold { background: var(--gold); color: var(--night); box-shadow: 0 10px 30px rgba(198,161,91,.28); }
    .btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.35); }
    .btn-zalo { background: #0068ff; color: #fff; }
    .btn-call { background: #128c7e; color: #fff; }

    .hero-card {
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.16);
      backdrop-filter: blur(18px);
      border-radius: 24px;
      padding: 24px;
    }
    .hero-card h2 {
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: 32px;
      font-weight: 600;
      margin-bottom: 6px;
    }
    .hero-card p { color: rgba(255,255,255,.78); font-size: 14px; }
    .hero-card .phone {
      margin: 16px 0 18px;
      font-size: 28px;
      font-weight: 700;
      letter-spacing: 0.04em;
      color: var(--gold-2);
    }

    .stats {
      position: relative;
      z-index: 2;
      margin-top: -40px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      background: #fff;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .stat { padding: 28px 24px; border-right: 1px solid #eee4d4; }
    .stat:last-child { border-right: 0; }
    .stat b {
      display: block;
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: 28px;
      color: var(--night);
    }
    .stat span { color: var(--muted); font-size: 14px; }

    section { padding: 88px 0; }
    .kicker { color: var(--gold); font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; font-size: 12px; }
    h2.section-title {
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: clamp(32px, 4vw, 52px);
      line-height: 1.1;
      margin: 10px 0 16px;
    }
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .story-photos {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 16px;
    }
    .story-photos img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: 20px;
    }
    .story-photos .tall { height: 460px; }
    .story-photos .stack { display: grid; gap: 16px; }
    .story-photos .stack img { height: 222px; }

    .note {
      margin-top: 22px;
      padding: 16px 18px;
      background: var(--paper-2);
      border-left: 3px solid var(--gold);
      border-radius: 0 14px 14px 0;
      color: var(--muted);
      font-size: 14px;
    }

    .products { background: var(--night); color: #fff; }
    .product-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-top: 40px;
    }
    .product {
      background:
        radial-gradient(circle at 50% 28%, rgba(92,225,255,.18), transparent 42%),
        linear-gradient(180deg, #12233c, #0a1628);
      border: 1px solid rgba(255,255,255,.08);
      border-radius: 28px;
      overflow: hidden;
    }
    .product-visual {
      height: 340px;
      display: grid;
      place-items: center;
      padding: 24px;
    }
    .product-visual img { max-height: 300px; width: auto; filter: drop-shadow(0 18px 28px rgba(0,0,0,.45)); }
    .product-body { padding: 0 28px 28px; }
    .product-body h3 {
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: 30px;
      margin-bottom: 8px;
    }
    .product-body p { color: rgba(255,255,255,.72); font-size: 14px; }
    .tag {
      display: inline-block;
      margin-bottom: 10px;
      color: var(--gold-2);
      font-size: 12px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
    }

    .led-banner {
      margin-top: 24px;
      border-radius: 28px;
      overflow: hidden;
      position: relative;
      min-height: 320px;
    }
    .led-banner img { width: 100%; height: 420px; object-fit: cover; object-position: 50% 42%; }
    .led-banner figcaption {
      position: absolute;
      inset: auto 24px 24px 24px;
      background: rgba(7,17,31,.72);
      backdrop-filter: blur(12px);
      color: #fff;
      padding: 18px 20px;
      border-radius: 16px;
      border: 1px solid rgba(92,225,255,.25);
    }

    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 36px; }
    .step {
      background: #fff;
      border-radius: 20px;
      padding: 24px 20px;
      box-shadow: 0 12px 30px rgba(16,24,40,.06);
      min-height: 210px;
    }
    .step .num {
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: 42px;
      color: var(--gold);
      display: block;
      line-height: 1;
      margin-bottom: 12px;
    }
    .step h3 { font-size: 17px; margin-bottom: 8px; }
    .step p { color: var(--muted); font-size: 14px; }

    .gallery-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 28px; }
    .mosaic {
      display: grid;
      grid-template-columns: 1.35fr 1fr 1fr;
      grid-template-rows: 250px 250px;
      gap: 14px;
    }
    .mosaic button {
      border: 0;
      padding: 0;
      border-radius: 18px;
      overflow: hidden;
      background: #111;
    }
    .mosaic img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
    .mosaic button:hover img { transform: scale(1.05); }
    .mosaic .wide { grid-row: span 2; }

    .why { background: var(--paper-2); }
    .why-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
    .checks { display: grid; gap: 14px; margin-top: 22px; }
    .check {
      display: grid;
      grid-template-columns: 28px 1fr;
      gap: 12px;
      background: #fff;
      padding: 16px 18px;
      border-radius: 16px;
    }
    .dot {
      width: 28px; height: 28px; border-radius: 50%;
      background: var(--night); color: var(--gold-2);
      display: grid; place-items: center; font-size: 14px;
    }

    .contact {
      background:
        radial-gradient(circle at 80% 20%, rgba(92,225,255,.18), transparent 28%),
        var(--night);
      color: #fff;
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .contact-panel {
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 28px;
      padding: 32px;
    }
    .person {
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: 48px;
      line-height: 1;
      margin: 8px 0 6px;
    }
    .contact-list { display: grid; gap: 12px; margin-top: 24px; }
    .contact-list a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 16px;
      padding: 16px 18px;
    }
    .contact-list a:hover { border-color: var(--gold); }
    .contact-list small { color: rgba(255,255,255,.6); display: block; font-size: 12px; }
    .contact-photo {
      border-radius: 28px;
      overflow: hidden;
      min-height: 420px;
    }
    .contact-photo img { width: 100%; height: 480px; object-fit: cover; }

    footer {
      background: #050b14;
      color: rgba(255,255,255,.62);
      padding: 28px 0 110px;
      font-size: 13px;
    }
    .foot { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

    .float-bar {
      position: fixed;
      right: 18px;
      bottom: 18px;
      z-index: 50;
      display: grid;
      gap: 10px;
    }
    .float-bar a {
      width: 58px;
      height: 58px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff;
      box-shadow: 0 12px 24px rgba(0,0,0,.25);
    }
    .float-bar .z { background: #0068ff; }
    .float-bar .c { background: #25d366; }
    .float-bar .f { background: #1877f2; }

    .mobile-cta {
      display: none;
      position: fixed;
      left: 0; right: 0; bottom: 0;
      z-index: 45;
      background: #fff;
      padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
      box-shadow: 0 -8px 24px rgba(0,0,0,.12);
      grid-template-columns: 1fr 1fr;
      gap: 8px;
    }

    body.lb-open { overflow: hidden; }
    body.lb-open .float-bar,
    body.lb-open .mobile-cta,
    body.lb-open .dvd-chat { visibility: hidden; }
    .lightbox {
      position: fixed;
      inset: 0;
      background: rgba(5,11,20,.92);
      display: none;
      place-items: center;
      z-index: 200;
      padding: 24px;
    }
    .lightbox.open { display: grid; }
    .lightbox img { max-width: min(1100px, 92vw); max-height: 88vh; border-radius: 12px; }
    .lightbox button {
      position: absolute;
      top: 18px;
      right: 18px;
      width: 44px;
      height: 44px;
      border: 0;
      border-radius: 50%;
      background: #fff;
      font-size: 22px;
    }

    @media (max-width: 900px) {
      nav { display: none; }
      nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0; right: 0;
        background: #07111f;
        padding: 12px 20px 20px;
        gap: 4px;
        z-index: 60;
      }
      nav.open a {
        width: 100%;
        padding: 12px 4px;
        font-size: 16px;
      }
      .menu-btn { display: grid; place-items: center; }
      .hero-inner, .intro-grid, .product-grid, .steps, .why-grid, .contact-grid, .mosaic, .svc-grid, .us-shots, .lead-layout, .lead-row, .hero-top, .contact-head {
        grid-template-columns: 1fr;
      }
      .mosaic { grid-template-rows: 240px 200px 200px 200px; }
      .mosaic .wide { grid-row: auto; height: 240px; }
      .hero-inner { padding: 36px 0 56px; }
      .hero-svcs { grid-template-columns: 1fr; gap: 14px; }
      .hero-svc { min-height: 0; grid-template-rows: 180px 1fr; }
      .hero-svc img { height: 180px; }
      .hero-svc h2 { font-size: 22px; }
      .hero-svc .txt { padding: 12px 12px 14px; }
      .hero-svc p { font-size: 12px; }
      .stats { margin-top: 16px; grid-template-columns: 1fr 1fr; }
      .stat { border-right: 1px solid #eee4d4; border-bottom: 1px solid #eee4d4; padding: 18px 16px; }
      .stat:nth-child(2n) { border-right: 0; }
      .stat:nth-last-child(-n+2) { border-bottom: 0; }
      .people-grid.compact { grid-template-columns: 1fr; }
      .story-photos, .story-photos .stack { grid-template-columns: 1fr; }
      .story-photos .tall, .story-photos .stack img { height: 240px; }
      .float-bar { display: none; }
      .mobile-cta { display: grid; }
      footer { padding-bottom: 96px; }
      .contact-photo img { height: 280px; }
      body { padding-bottom: 76px; }
    }

    .hero.compact {
      min-height: 0;
      background-position: center 30%;
    }
    .hero.compact .hero-inner {
      padding: 52px 0 44px;
    }
    .hero.compact h1 { max-width: 22ch; font-size: clamp(32px, 5vw, 54px); line-height: 1.08; }
    .crumb { font-size: 13px; color: rgba(255,255,255,.7); margin-bottom: 14px; }
    .crumb a { color: var(--gold-2); }

    .specs {
      margin-top: 36px;
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      gap: 24px;
      align-items: stretch;
    }
    .spec-box {
      background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 24px;
      padding: 6px 26px 18px;
    }
    .spec-box table { width: 100%; border-collapse: collapse; font-size: 14px; }
    .spec-box th, .spec-box td {
      padding: 11px 0;
      border-bottom: 1px solid rgba(255,255,255,.08);
      text-align: left;
      vertical-align: top;
    }
    .spec-box tr:last-child th,
    .spec-box tr:last-child td { border-bottom: 0; }
    .spec-box th { color: rgba(255,255,255,.62); font-weight: 500; width: 46%; padding-right: 14px; }
    .spec-box td { color: #fff; font-weight: 600; }
    .spec-col { display: grid; gap: 12px; }
    .spec-hi {
      background: rgba(92,225,255,.08);
      border: 1px solid rgba(92,225,255,.16);
      border-radius: 18px;
      padding: 18px 20px;
    }
    .spec-hi b {
      display: block;
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: 28px;
      color: var(--cyan);
      line-height: 1.1;
      margin-bottom: 4px;
    }
    .spec-hi span { color: rgba(255,255,255,.72); font-size: 14px; }
    .spec-note { margin-top: 14px; color: rgba(255,255,255,.58); font-size: 12px; }

    .articles { background: #fff; }
    .article-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      margin-top: 32px;
    }
    .article-card {
      display: grid;
      grid-template-columns: 148px 1fr;
      background: var(--paper);
      border-radius: 20px;
      overflow: hidden;
      border: 1px solid #eee4d4;
      min-height: 168px;
    }
    .article-card:hover { border-color: var(--gold); }
    .article-card img { width: 148px; height: 100%; object-fit: cover; }
    .article-card .txt { padding: 18px 20px; }
    .article-card h3 { font-size: 18px; margin: 6px 0 8px; line-height: 1.3; color: var(--ink); }
    .article-card p { color: var(--muted); font-size: 14px; }
    .article-card .more { color: #9a7428; font-weight: 600; font-size: 13px; margin-top: 10px; display: inline-block; }

    .prose-wrap { padding: 20px 0 88px; }
    .prose { max-width: 760px; }
    .prose h2 {
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: clamp(26px, 3vw, 34px);
      margin: 34px 0 12px;
      line-height: 1.2;
    }
    .prose h3 { font-size: 17px; margin: 22px 0 8px; }
    .prose p { margin: 12px 0; color: #2a3344; }
    .prose ul, .prose ol { margin: 8px 0 16px 1.2rem; }
    .prose li { margin: 7px 0; color: #2a3344; }
    .sources {
      margin-top: 40px;
      padding: 22px 24px;
      background: var(--paper-2);
      border-radius: 16px;
    }
    .sources h2 { margin-top: 0; font-size: 24px; }
    .sources ol { margin: 10px 0 0 1.15rem; }
    .sources a { color: #1a4a8a; text-decoration: underline; text-underline-offset: 3px; }
    .callout {
      margin: 20px 0;
      padding: 16px 18px;
      background: #fff7e8;
      border-left: 3px solid var(--gold);
      border-radius: 0 14px 14px 0;
      color: #3d3426;
    }
    .related { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; margin-top: 28px; }
    .related a {
      display: block;
      background: #fff;
      border: 1px solid #eee4d4;
      border-radius: 16px;
      padding: 16px;
      font-size: 14px;
      font-weight: 600;
    }
    .related a:hover { border-color: var(--gold); }
    .btn-ghost.dark { color: var(--ink); border-color: #d9cbb0; }

    .people-stack { display: grid; gap: 12px; }
    .contact-head {
      display: grid;
      grid-template-columns: .72fr 1.28fr;
      gap: 20px 28px;
      align-items: end;
      margin-bottom: 20px;
    }
    .contact-head .section-title { margin: 8px 0 0; }
    .people-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 28px; }
    .people-grid.compact { margin-top: 0; gap: 12px; }
    .people-grid.compact .zalo-top {
      grid-template-columns: 42px 1fr 52px;
      gap: 8px;
      padding: 10px 12px 8px;
    }
    .people-grid.compact .zalo-av { width: 42px; height: 42px; }
    .people-grid.compact .zalo-qr { width: 52px; height: 52px; padding: 3px; }
    .people-grid.compact .zalo-top strong { font-size: 15px; }
    .people-grid.compact .zalo-top span { font-size: 12px; }
    .people-grid.compact .zalo-actions a {
      min-height: 40px;
      padding: 8px 6px;
      font-size: 13px;
    }
    .contact .lead-box { margin-top: 0; }
    .zalo-card {
      background: #0068ff;
      border-radius: 22px;
      overflow: hidden;
      color: #fff;
      box-shadow: 0 16px 36px rgba(0, 80, 200, .22);
    }
    .zalo-top {
      display: grid;
      grid-template-columns: 58px 1fr 78px;
      gap: 12px;
      align-items: center;
      padding: 16px 16px 14px;
    }
    .zalo-av {
      width: 58px;
      height: 58px;
      border-radius: 50%;
      object-fit: cover;
      background: #fff;
    }
    .zalo-top strong { display: block; font-size: 18px; }
    .zalo-top span { display: block; font-size: 13px; opacity: .9; margin-top: 2px; }
    .zalo-qr {
      width: 78px;
      height: 78px;
      border-radius: 10px;
      background: #fff;
      padding: 5px;
    }
    .zalo-actions {
      display: grid;
      grid-template-columns: 1fr 1fr;
      background: #fff;
    }
    .zalo-actions a {
      color: #111;
      text-align: center;
      padding: 14px 8px;
      font-weight: 700;
      font-size: 15px;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
    }
    .zalo-actions a + a { border-left: 1px solid #e8eef6; }
    .zalo-actions a:hover { color: #0068ff; }
    .zalo-qr-pop {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 220;
      background: rgba(5, 11, 20, .88);
      place-items: center;
      padding: 24px;
      text-align: center;
    }
    .zalo-qr-pop.open { display: grid; }
    .zalo-qr-pop img {
      width: min(280px, 72vw);
      height: auto;
      background: #fff;
      border-radius: 16px;
      padding: 12px;
    }
    .zalo-qr-pop p {
      color: #fff;
      max-width: 32ch;
      margin: 16px auto 0;
      font-size: 15px;
    }
    .zalo-qr-x {
      position: absolute;
      top: 18px;
      right: 18px;
      width: 44px;
      height: 44px;
      border: 0;
      border-radius: 50%;
      background: #fff;
      font-size: 22px;
    }
    .contact .section-title { color: #fff; }
    .float-bar .z2 { background: #0052cc; font-size: 12px; font-weight: 700; }

    .svc-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      margin-top: 40px;
    }
    .svc-card {
      display: grid;
      grid-template-columns: 44% 1fr;
      background: #fff;
      border-radius: 22px;
      overflow: hidden;
      border: 1px solid #eee4d4;
      min-height: 210px;
    }
    .svc-card:hover { border-color: var(--gold); }
    .svc-card img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      background: #0c1a2e;
      padding: 12px;
    }
    .svc-card:last-child img { object-fit: cover; padding: 0; }
    #sieu-am { border-top: 1px solid rgba(255,255,255,.1); }
    .svc-card .txt { padding: 22px 20px; }
    .svc-card h3 {
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: 28px;
      line-height: 1.15;
      margin: 6px 0 8px;
    }
    .svc-card p { color: var(--muted); font-size: 14px; }
    .svc-card .more { color: #9a7428; font-weight: 600; font-size: 13px; margin-top: 12px; display: inline-block; }

    .us-apps { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 6px; }
    .us-apps span {
      background: rgba(92,225,255,.1);
      color: var(--cyan);
      border: 1px solid rgba(92,225,255,.18);
      padding: 7px 12px;
      border-radius: 999px;
      font-size: 13px;
    }
    .us-shots {
      display: grid;
      grid-template-columns: 1.15fr 1fr 1fr;
      grid-template-rows: 210px 210px;
      gap: 12px;
      margin-top: 24px;
    }
    .us-shots button {
      border: 0;
      padding: 0;
      background: #081422;
      border-radius: 16px;
      overflow: hidden;
    }
    .us-shots img { width: 100%; height: 100%; object-fit: cover; }
    .us-shots .wide { grid-row: span 2; }
    .us-shots .wide img { object-fit: contain; background: #fff; padding: 10px; }
    .kt-label { margin-top: 40px; }

    .lead-layout {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 22px;
      margin-top: 28px;
      align-items: start;
    }
    .lead-box {
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 28px;
      padding: 28px 26px;
    }
    .lead-box h3 {
      font-family: "Cormorant Garamond", Georgia, serif;
      font-size: 34px;
      line-height: 1.15;
      margin: 8px 0 8px;
      color: #fff;
    }
    .lead-intro { color: rgba(255,255,255,.72); font-size: 14px; margin-bottom: 18px; }
    .lead-form { display: grid; gap: 14px; }
    .lead-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .lead-form label, .lead-label {
      display: grid;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      color: rgba(255,255,255,.78);
    }
    .lead-form input, .lead-form textarea {
      width: 100%;
      border: 1px solid rgba(255,255,255,.16);
      background: rgba(5,11,20,.45);
      color: #fff;
      border-radius: 14px;
      min-height: 48px;
      padding: 10px 14px;
      font: inherit;
    }
    .lead-form textarea { min-height: 88px; resize: vertical; }
    .lead-form input:focus, .lead-form textarea:focus {
      outline: 2px solid rgba(198,161,91,.65);
      border-color: var(--gold);
    }
    .lead-svcs { display: flex; flex-wrap: wrap; gap: 8px; }
    .lead-svcs label {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 10px 14px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.16);
      background: rgba(255,255,255,.04);
      font-size: 13px;
      font-weight: 600;
      color: #fff;
      cursor: pointer;
    }
    .lead-svcs label:has(input:checked) {
      border-color: var(--gold);
      background: rgba(198,161,91,.18);
      color: var(--gold-2);
    }
    .lead-svcs input { width: auto; min-height: 0; accent-color: var(--gold); }
    .lead-note { font-size: 12px; color: rgba(255,255,255,.55); font-weight: 400; }
    .lead-status { min-height: 1.4em; font-size: 14px; font-weight: 600; }
    .lead-status.ok { color: #8df0c6; }
    .lead-status.err { color: #ffb4a8; }
    .lead-hp {
      position: absolute;
      left: -9999px;
      width: 1px;
      height: 1px;
      opacity: 0;
    }
    .lead-box.light {
      background: #fff;
      border: 1px solid #eee4d4;
      margin-top: 36px;
    }
    .lead-box.light h3 { color: var(--ink); }
    .lead-box.light .lead-form label,
    .lead-box.light .lead-label { color: var(--muted); }
    .lead-box.light .lead-form input,
    .lead-box.light .lead-form textarea {
      background: #f6f1e8;
      color: var(--ink);
      border-color: #e6dcc8;
    }
    .lead-box.light .lead-svcs label {
      color: var(--ink);
      border-color: #e6dcc8;
      background: #f6f1e8;
    }
    .lead-box.light .lead-svcs label:has(input:checked) {
      color: #7a5a1e;
      background: #f4e7c8;
    }
    .lead-box.light .lead-note { color: var(--muted); }
    .lead-box.light .lead-status.ok { color: #0f7a4a; }
    .lead-box.light .lead-status.err { color: #b42318; }

    .dvd-chat { position: relative; z-index: 55; }
    .dvd-chat-launch {
      position: fixed;
      left: 16px;
      bottom: 18px;
      z-index: 56;
      width: 58px;
      height: 58px;
      border: 0;
      border-radius: 50%;
      background: var(--night);
      color: var(--gold-2);
      box-shadow: 0 12px 24px rgba(0,0,0,.28);
      font-size: 22px;
      display: grid;
      place-items: center;
    }
    .dvd-chat-launch[aria-expanded="true"] { background: #c6a15b; color: #07111f; }
    .dvd-chat-n {
      position: absolute;
      top: -4px;
      right: -4px;
      min-width: 18px;
      height: 18px;
      padding: 0 5px;
      border-radius: 999px;
      background: #e24b4b;
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      display: grid;
      place-items: center;
    }
    .dvd-chat-n.hide { display: none; }
    .dvd-chat-tip {
      position: fixed;
      left: 82px;
      bottom: 28px;
      z-index: 56;
      max-width: 240px;
      background: #fff;
      color: var(--ink);
      border-radius: 16px 16px 16px 4px;
      padding: 12px 14px;
      font-size: 13px;
      line-height: 1.45;
      box-shadow: var(--shadow);
      border: 1px solid #eee4d4;
    }
    .dvd-chat-tip.hide, .dvd-chat-panel.hide { display: none; }
    .dvd-chat-panel {
      position: fixed;
      left: 16px;
      bottom: 86px;
      z-index: 57;
      width: min(380px, calc(100vw - 32px));
      height: min(540px, calc(100dvh - 120px));
      background: #fff;
      border-radius: 22px;
      box-shadow: var(--shadow);
      border: 1px solid #eee4d4;
      display: grid;
      grid-template-rows: auto 1fr auto;
      overflow: hidden;
    }
    .dvd-chat-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 14px 16px;
      background: var(--night);
      color: #fff;
    }
    .dvd-chat-head strong { display: block; font-size: 14px; letter-spacing: .04em; }
    .dvd-chat-head span { display: block; font-size: 11px; color: var(--gold-2); margin-top: 2px; }
    .dvd-chat-x {
      width: 36px;
      height: 36px;
      border: 0;
      border-radius: 50%;
      background: rgba(255,255,255,.1);
      color: #fff;
      font-size: 20px;
      flex: none;
    }
    .dvd-chat-log {
      overflow: auto;
      padding: 14px 14px 8px;
      display: grid;
      align-content: start;
      gap: 10px;
      background: #f6f1e8;
    }
    .dvd-chat-msg {
      max-width: 92%;
      padding: 10px 12px;
      border-radius: 14px;
      font-size: 14px;
      line-height: 1.5;
    }
    .dvd-chat-msg.bot {
      background: #fff;
      color: var(--ink);
      border: 1px solid #eee4d4;
      border-bottom-left-radius: 4px;
    }
    .dvd-chat-msg.user {
      justify-self: end;
      background: var(--night);
      color: #fff;
      border-bottom-right-radius: 4px;
    }
    .dvd-chat-msg.err { color: #8a2b22; background: #fde8e4; }
    .dvd-chat-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      padding: 0 14px 10px;
      background: #f6f1e8;
    }
    .dvd-chat-chips.hide { display: none; }
    .dvd-chat-chips button {
      border: 1px solid #e6dcc8;
      background: #fff;
      color: var(--ink);
      border-radius: 999px;
      padding: 7px 12px;
      font-size: 12px;
      font-weight: 600;
    }
    .dvd-chat-form {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 8px;
      padding: 10px 12px 12px;
      border-top: 1px solid #eee4d4;
      background: #fff;
    }
    .dvd-chat-form textarea {
      width: 100%;
      min-height: 44px;
      max-height: 96px;
      resize: none;
      border: 1px solid #e6dcc8;
      border-radius: 14px;
      padding: 10px 12px;
      font: inherit;
      font-size: 16px;
    }
    .dvd-chat-form button[type="submit"] {
      border: 0;
      border-radius: 14px;
      background: var(--gold);
      color: var(--night);
      font-weight: 700;
      padding: 0 16px;
      min-width: 72px;
    }
    .dvd-chat-form button:disabled { opacity: .55; }

    @media (max-width: 900px) {
      .specs, .article-grid, .related, .svc-grid, .lead-layout, .lead-row { grid-template-columns: 1fr; }
      .people-grid.compact { grid-template-columns: 1fr; }
      .article-card { grid-template-columns: 1fr; }
      .article-card img { width: 100%; height: 180px; }
      .svc-card { grid-template-columns: 1fr; }
      .svc-card img { height: 180px; }
      .us-shots { grid-template-columns: 1fr; grid-template-rows: 280px 180px 180px 180px; }
      .us-shots .wide { grid-row: auto; }
      .dvd-chat-launch { bottom: max(86px, calc(12px + env(safe-area-inset-bottom))); }
      .dvd-chat-tip {
        bottom: max(96px, calc(22px + env(safe-area-inset-bottom)));
        max-width: min(240px, calc(100vw - 100px));
      }
      .dvd-chat-panel {
        left: 0;
        right: 0;
        top: 0;
        bottom: 0;
        width: 100%;
        height: var(--dvd-vvh, 100dvh);
        border-radius: 0;
        z-index: 80;
      }
      body.dvd-chat-open {
        overflow: hidden;
        height: 100dvh;
      }
      body.dvd-chat-open .mobile-cta,
      body.dvd-chat-open .dvd-chat-launch,
      body.dvd-chat-open .dvd-chat-tip { display: none; }
      .dvd-chat-head { padding: 12px 14px calc(12px + env(safe-area-inset-top)); }
      .dvd-chat-form { padding-bottom: calc(12px + env(safe-area-inset-bottom)); }
      .dvd-chat-form button[type="submit"] { min-height: 48px; }
    }