:root {
      /* Team Dental Surgeons */
      --black: #01202D;
      --surface: #024059;
      --surface2: #03658C;
      --border: rgba(255, 255, 255, 0.15);
      --accent: #89C2D9;
      --accent-dim: rgba(137, 194, 217, 0.15);
      --accent-glow: rgba(137, 194, 217, 0.3);
      --white: #F9FAFA;
      --muted: #D7D7D9;

      --verde-salvia: #03658C;

      --serif: 'DM Serif Display', serif;
      --sans: 'DM Sans', sans-serif;
  }

  *,
  *::before,
  *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
  }

  html {
      scroll-behavior: smooth;
  }

  body {
      background: var(--black);
      color: var(--white);
      font-family: var(--sans);
      font-size: 16px;
      line-height: 1.65;
      overflow-x: hidden;
  }

  /* ── NOISE TEXTURE OVERLAY ── */
  body::before {
      content: '';
      position: fixed;
      inset: 0;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
      pointer-events: none;
      z-index: 0;
      opacity: 0.6;
  }

  /* ── NAV ── */
  nav {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 48px;
      background: rgba(26, 38, 36, 0.8);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border);
  }

  .logo {
      font-family: var(--serif);
      font-size: 22px;
      color: var(--white);
      text-decoration: none;
      letter-spacing: -0.3px;
  }

  .logo span {
      color: var(--accent);
  }

  .nav-links {
      display: flex;
      gap: 36px;
      list-style: none;
  }

  .nav-links a {
      color: var(--muted);
      text-decoration: none;
      font-size: 14px;
      font-weight: 400;
      transition: color 0.2s;
  }

  .nav-links a:hover {
      color: var(--white);
  }

  .nav-cta {
      background: var(--accent);
      color: var(--black);
      font-family: var(--sans);
      font-size: 14px;
      font-weight: 500;
      padding: 10px 22px;
      border-radius: 6px;
      text-decoration: none;
      transition: opacity 0.2s, transform 0.15s;
  }

  .nav-cta:hover {
      opacity: 0.88;
      transform: translateY(-1px);
  }

  .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: none;
      border: none;
      padding: 4px;
  }

  .hamburger span {
      display: block;
      width: 22px;
      height: 1.5px;
      background: var(--white);
      transition: 0.3s;
  }

  /* ── HERO ── */
  .hero {
      position: relative;
      min-height: 100vh;
      display: flex;
      align-items: center;
      padding: 140px 48px 80px;
      overflow: hidden;
  }

  /* Radial glow background */
  .hero::after {
      content: '';
      position: absolute;
      top: -20%;
      right: -10%;
      width: 700px;
      height: 700px;
      background: radial-gradient(circle, rgba(143, 191, 178, 0.07) 0%, transparent 65%);
      pointer-events: none;
  }

  .hero-inner {
      max-width: 1100px;
      margin: 0 auto;
      width: 100%;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      position: relative;
      z-index: 1;
  }

  .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--accent-dim);
      border: 1px solid rgba(143, 191, 178, 0.3);
      padding: 6px 14px;
      border-radius: 100px;
      font-size: 12px;
      font-weight: 500;
      color: var(--accent);
      letter-spacing: 0.5px;
      text-transform: uppercase;
      margin-bottom: 28px;
      animation: fadeUp 0.6s ease both;
  }

  .hero-badge::before {
      content: '';
      width: 6px;
      height: 6px;
      background: var(--accent);
      border-radius: 50%;
      animation: pulse 2s ease infinite;
  }

  @keyframes pulse {

      0%,
      100% {
          opacity: 1;
          transform: scale(1);
      }

      50% {
          opacity: 0.5;
          transform: scale(0.8);
      }
  }

  h1 {
      font-family: var(--serif);
      font-size: clamp(40px, 5vw, 66px);
      line-height: 1.07;
      letter-spacing: -1.5px;
      margin-bottom: 24px;
      animation: fadeUp 0.6s 0.1s ease both;
  }

  h1 em {
      font-style: italic;
      color: var(--accent);
  }

  .hero-sub {
      font-size: 17px;
      color: var(--muted);
      max-width: 480px;
      line-height: 1.7;
      margin-bottom: 40px;
      font-weight: 300;
      animation: fadeUp 0.6s 0.2s ease both;
  }

  .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      animation: fadeUp 0.6s 0.3s ease both;
  }

  .btn-primary {
      background: var(--accent);
      color: var(--black);
      font-family: var(--sans);
      font-size: 15px;
      font-weight: 500;
      padding: 14px 28px;
      border-radius: 8px;
      text-decoration: none;
      transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
      box-shadow: 0 0 0 0 var(--accent-glow);
  }

  .btn-primary:hover {
      opacity: 0.9;
      transform: translateY(-2px);
      box-shadow: 0 8px 30px var(--accent-glow);
  }

  .btn-ghost {
      background: transparent;
      color: var(--white);
      font-family: var(--sans);
      font-size: 15px;
      font-weight: 400;
      padding: 14px 28px;
      border-radius: 8px;
      text-decoration: none;
      border: 1px solid var(--border);
      transition: border-color 0.2s, background 0.2s;
  }

  .btn-ghost:hover {
      border-color: rgba(255, 255, 255, 0.25);
      background: rgba(255, 255, 255, 0.04);
  }

  /* Hero right — chat mockup */
  .hero-visual {
      animation: fadeUp 0.6s 0.25s ease both;
  }

  .chat-mockup {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 32px 80px rgba(0, 0, 0, 0.5);
  }

  .chat-header {
      background: var(--surface2);
      padding: 14px 18px;
      display: flex;
      align-items: center;
      gap: 12px;
      border-bottom: 1px solid var(--border);
  }

  .chat-avatar {
      width: 36px;
      height: 36px;
      background: var(--accent-dim);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      flex-shrink: 0;
      border: 1px solid rgba(143, 191, 178, 0.3);
  }

  .chat-name {
      font-size: 14px;
      font-weight: 500;
  }

  .chat-status {
      font-size: 12px;
      color: var(--accent);
  }

  .chat-body {
      padding: 18px;
      display: flex;
      flex-direction: column;
      gap: 12px;
  }

  .msg {
      max-width: 85%;
      padding: 10px 14px;
      border-radius: 12px;
      font-size: 13.5px;
      line-height: 1.5;
      opacity: 0;
      animation: msgIn 0.4s ease forwards;
  }

  .msg-bot {
      background: var(--surface2);
      border: 1px solid var(--border);
      border-bottom-left-radius: 4px;
      align-self: flex-start;
  }

  .msg-user {
      background: var(--accent);
      color: var(--black);
      border-bottom-right-radius: 4px;
      align-self: flex-end;
  }

  .msg:nth-child(1) {
      animation-delay: 0.8s;
  }

  .msg:nth-child(2) {
      animation-delay: 1.4s;
  }

  .msg:nth-child(3) {
      animation-delay: 2.0s;
  }

  .msg:nth-child(4) {
      animation-delay: 2.7s;
  }

  .msg:nth-child(5) {
      animation-delay: 3.3s;
  }

  @keyframes msgIn {
      from {
          opacity: 0;
          transform: translateY(6px);
      }

      to {
          opacity: 1;
          transform: translateY(0);
      }
  }

  .chat-input-bar {
      padding: 12px 16px;
      border-top: 1px solid var(--border);
      display: flex;
      align-items: center;
      gap: 10px;
  }

  .chat-input-field {
      flex: 1;
      background: var(--surface2);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 8px 12px;
      font-size: 13px;
      color: var(--muted);
      font-family: var(--sans);
  }

  /* ── STATS BAR ── */
  .stats-bar {
      position: relative;
      z-index: 1;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 36px 48px;
      display: flex;
      justify-content: center;
      gap: 0;
  }

  .stat-item {
      flex: 1;
      max-width: 240px;
      text-align: center;
      padding: 0 40px;
      border-right: 1px solid var(--border);
  }

  .stat-item:last-child {
      border-right: none;
  }

  .stat-number {
      font-family: var(--serif);
      font-size: 42px;
      color: var(--accent);
      line-height: 1;
      margin-bottom: 6px;
  }

  .stat-label {
      font-size: 13px;
      color: var(--muted);
      font-weight: 300;
  }

  /* ── SECTIONS SHARED ── */
  section {
      position: relative;
      z-index: 1;
      padding: 100px 48px;
      max-width: 1100px;
      margin: 0 auto;
  }

  .section-tag {
      font-size: 11px;
      font-weight: 500;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 16px;
  }

  h2 {
      font-family: var(--serif);
      font-size: clamp(32px, 4vw, 52px);
      line-height: 1.1;
      letter-spacing: -1px;
      margin-bottom: 20px;
  }

  h2 em {
      font-style: italic;
      color: var(--accent);
  }

  .section-sub {
      font-size: 16px;
      color: var(--muted);
      max-width: 580px;
      font-weight: 300;
      margin-bottom: 60px;
      line-height: 1.7;
  }

  /* ── HOW IT WORKS ── */
  .steps-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2px;
      background: var(--border);
      border: 1px solid var(--border);
      border-radius: 16px;
      overflow: hidden;
  }

  .step-card {
      background: var(--surface);
      padding: 36px 32px;
      transition: background 0.25s;
  }

  .step-card:hover {
      background: var(--surface2);
  }

  .step-num {
      font-family: var(--serif);
      font-size: 48px;
      color: var(--accent-dim);
      line-height: 1;
      margin-bottom: 20px;
      border: 1px solid rgba(143, 191, 178, 0.2);
      width: 56px;
      height: 56px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      font-size: 20px;
      color: var(--accent);
  }

  .step-title {
      font-family: var(--serif);
      font-size: 22px;
      margin-bottom: 10px;
      line-height: 1.2;
  }

  .step-desc {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.65;
      font-weight: 300;
  }

  /* ── CASES / RESULTS ── */
  .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
  }

  .case-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 36px;
      transition: border-color 0.25s, transform 0.25s;
      cursor: default;
  }

  .case-card:hover {
      border-color: rgba(143, 191, 178, 0.3);
      transform: translateY(-3px);
  }

  .case-icon {
      font-size: 28px;
      margin-bottom: 20px;
  }

  .case-title {
      font-family: var(--serif);
      font-size: 22px;
      margin-bottom: 10px;
  }

  .case-desc {
      font-size: 14px;
      color: var(--muted);
      font-weight: 300;
      line-height: 1.7;
      margin-bottom: 20px;
  }

  .case-metrics {
      display: flex;
      gap: 20px;
      padding-top: 20px;
      border-top: 1px solid var(--border);
  }

  .metric {
      display: flex;
      flex-direction: column;
      gap: 3px;
  }

  .metric-val {
      font-family: var(--serif);
      font-size: 24px;
      color: var(--accent);
  }

  .metric-lbl {
      font-size: 11px;
      color: var(--muted);
      text-transform: uppercase;
      letter-spacing: 0.8px;
  }

  /* ── DEMO SECTION ── */
  .demo-section {
      background: var(--surface);
      border-radius: 24px;
      border: 1px solid var(--border);
      padding: 60px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
  }

  .demo-phone {
      background: var(--surface2);
      border: 1px solid var(--border);
      border-radius: 20px;
      padding: 0;
      overflow: hidden;
      max-width: 300px;
      margin: 0 auto;
      box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  }

  .phone-bar {
      background: var(--surface2);
      padding: 12px 16px;
      display: flex;
      align-items: center;
      gap: 10px;
      border-bottom: 1px solid var(--border);
  }

  .phone-dot {
      width: 10px;
      height: 10px;
      background: var(--accent);
      border-radius: 50%;
  }

  .phone-name {
      font-size: 13px;
      font-weight: 500;
  }

  .phone-sub {
      font-size: 11px;
      color: var(--accent);
  }

  .phone-msgs {
      padding: 16px;
      display: flex;
      flex-direction: column;
      gap: 10px;
  }

  .pm {
      padding: 9px 13px;
      border-radius: 10px;
      font-size: 12.5px;
      line-height: 1.4;
      max-width: 88%;
  }

  .pm-bot {
      background: var(--surface);
      border: 1px solid var(--border);
      border-bottom-left-radius: 3px;
      align-self: flex-start;
  }

  .pm-user {
      background: var(--verde-salvia);
      border-bottom-right-radius: 3px;
      align-self: flex-end;
      color: var(--white);
  }

  .demo-text h3 {
      font-family: var(--serif);
      font-size: 34px;
      line-height: 1.15;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
  }

  .demo-text p {
      font-size: 15px;
      color: var(--muted);
      font-weight: 300;
      line-height: 1.7;
      margin-bottom: 24px;
  }

  .feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
  }

  .feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 14px;
      color: var(--muted);
      font-weight: 300;
  }

  .feature-list li::before {
      content: '';
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--accent-dim);
      border: 1px solid rgba(143, 191, 178, 0.4);
      flex-shrink: 0;
      margin-top: 2px;
      display: flex;
      align-items: center;
      justify-content: center;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath d='M2 5l2 2 4-4' stroke='%2389C2D9' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: center;
  }

  /* ── PRICING ── */
  .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      align-items: start;
  }

  .pricing-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 36px 32px;
      position: relative;
      transition: border-color 0.25s;
  }

  .pricing-card:hover {
      border-color: rgba(255, 255, 255, 0.15);
  }

  .pricing-card.featured {
      border-color: var(--accent);
      background: linear-gradient(135deg, rgba(143, 191, 178, 0.06) 0%, var(--surface) 60%);
  }

  .featured-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--accent);
      color: var(--black);
      font-size: 11px;
      font-weight: 500;
      padding: 4px 14px;
      border-radius: 100px;
      letter-spacing: 0.5px;
      white-space: nowrap;
  }

  .plan-name {
      font-size: 12px;
      font-weight: 500;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--muted);
      margin-bottom: 16px;
  }

  .plan-price {
      font-family: var(--serif);
      font-size: 48px;
      line-height: 1;
      margin-bottom: 6px;
  }

  .plan-price span {
      font-size: 20px;
      vertical-align: top;
      margin-top: 8px;
      display: inline-block;
  }

  .plan-period {
      font-size: 13px;
      color: var(--muted);
      margin-bottom: 28px;
  }

  .plan-divider {
      height: 1px;
      background: var(--border);
      margin-bottom: 28px;
  }

  .plan-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 32px;
  }

  .plan-features li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: var(--muted);
      font-weight: 300;
  }

  .plan-features li .chk {
      color: var(--accent);
      flex-shrink: 0;
      font-size: 16px;
      line-height: 1.4;
  }

  .plan-btn {
      display: block;
      text-align: center;
      padding: 12px;
      border-radius: 8px;
      font-family: var(--sans);
      font-size: 14px;
      font-weight: 500;
      text-decoration: none;
      transition: 0.2s;
  }

  .plan-btn-outline {
      border: 1px solid var(--border);
      color: var(--white);
  }

  .plan-btn-outline:hover {
      border-color: rgba(255, 255, 255, 0.25);
      background: rgba(255, 255, 255, 0.04);
  }

  .plan-btn-solid {
      background: var(--accent);
      color: var(--black);
  }

  .plan-btn-solid:hover {
      opacity: 0.88;
  }

  /* ── ABOUT ── */
  .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 80px;
      align-items: center;
  }

  .about-text h2 {
      margin-bottom: 20px;
  }

  .about-text p {
      font-size: 15px;
      color: var(--muted);
      font-weight: 300;
      line-height: 1.75;
      margin-bottom: 16px;
  }

  .about-visual {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
  }

  .about-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 24px 20px;
      text-align: center;
      transition: border-color 0.2s;
  }

  .about-card:hover {
      border-color: rgba(143, 191, 178, 0.3);
  }

  .about-card .icon {
      font-size: 24px;
      margin-bottom: 10px;
  }

  .about-card .lbl {
      font-size: 13px;
      color: var(--muted);
      font-weight: 300;
      line-height: 1.4;
  }

  /* ── CTA BANNER ── */
  .cta-banner {
      margin: 0 48px 100px;
      background: var(--surface);
      border: 1px solid rgba(143, 191, 178, 0.2);
      border-radius: 24px;
      padding: 70px 60px;
      text-align: center;
      position: relative;
      z-index: 1;
      overflow: hidden;
  }

  .cta-banner::before {
      content: '';
      position: absolute;
      top: -50%;
      left: 50%;
      transform: translateX(-50%);
      width: 500px;
      height: 300px;
      background: radial-gradient(circle, rgba(143, 191, 178, 0.08) 0%, transparent 70%);
      pointer-events: none;
  }

  .cta-banner h2 {
      margin-bottom: 16px;
  }

  .cta-banner p {
      font-size: 16px;
      color: var(--muted);
      max-width: 520px;
      margin: 0 auto 36px;
      font-weight: 300;
  }

  /* ── FOOTER ── */
  footer {
      position: relative;
      z-index: 1;
      border-top: 1px solid var(--border);
      padding: 20px 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
  }

  .footer-logo {
      font-family: var(--serif);
      font-size: 18px;
  }

  .footer-logo span {
      color: var(--accent);
  }

  .footer-links {
      display: flex;
      gap: 28px;
      list-style: none;
  }

  .footer-links a {
      font-size: 13px;
      color: var(--muted);
      text-decoration: none;
      transition: color 0.2s;
  }

  .footer-links a:hover {
      color: var(--white);
  }

  .footer-copy {
      font-size: 12px;
      color: rgba(242, 244, 240, 0.25);
  }

  /* ── ANIMATIONS ── */
  @keyframes fadeUp {
      from {
          opacity: 0;
          transform: translateY(20px);
      }

      to {
          opacity: 1;
          transform: translateY(0);
      }
  }

  .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.65s ease, transform 0.65s ease;
  }

  .reveal.visible {
      opacity: 1;
      transform: none;
  }

  /* ── MOBILE ── */
  @media (max-width: 768px) {
      nav {
          padding: 16px 24px;
      }

      .nav-links,
      .nav-cta {
          display: none;
      }

      .hamburger {
          display: flex;
      }

      .hero {
          padding: 110px 24px 60px;
      }

      .hero-inner {
          grid-template-columns: 1fr;
          gap: 40px;
      }

      .hero-visual {
          order: -1;
      }

      section {
          padding: 60px 24px;
      }

      .steps-grid {
          grid-template-columns: 1fr;
      }

      .cases-grid {
          grid-template-columns: 1fr;
      }

      .pricing-grid {
          grid-template-columns: 1fr;
      }

      .about-grid {
          grid-template-columns: 1fr;
          gap: 40px;
      }

      .demo-section {
          grid-template-columns: 1fr;
          padding: 36px 24px;
      }

      .stats-bar {
          flex-direction: column;
          gap: 0;
          padding: 0;
      }

      .stat-item {
          border-right: none;
          border-bottom: 1px solid var(--border);
          padding: 28px 24px;
          max-width: 100%;
      }

      .stat-item:last-child {
          border-bottom: none;
      }

      .cta-banner {
          margin: 0 24px 60px;
          padding: 48px 28px;
      }

      footer {
          flex-direction: column;
          gap: 20px;
          text-align: center;
          padding: 32px 24px;
      }

      .footer-links {
          flex-wrap: wrap;
          justify-content: center;
          gap: 16px;
      }
  }