:root {
      --bg: #06131b;
      --bg-soft: #0a1d27;
      --card: rgba(255, 255, 255, 0.06);
      --card-border: rgba(255, 255, 255, 0.12);
      --text: #f6fbff;
      --muted: #a9bdc9;
      --accent: #5de7d4;
      --accent-2: #5bbcff;
      --success: #92ffd8;
      --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
      --radius: 24px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
        sans-serif;
      background:
        radial-gradient(circle at top left, rgba(91, 188, 255, 0.12), transparent 28%),
        radial-gradient(circle at top right, rgba(93, 231, 212, 0.12), transparent 28%),
        linear-gradient(180deg, #051118 0%, #071923 45%, #06131b 100%);
      color: var(--text);
      line-height: 1.6;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    .container {
      width: min(1120px, calc(100% - 32px));
      margin: 0 auto;
    }

    header {
      position: sticky;
      top: 0;
      z-index: 20;
      backdrop-filter: blur(18px);
      background: rgba(5, 17, 24, 0.72);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.02em;
    }

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

    .nav-links {
      display: flex;
      gap: 20px;
      align-items: center;
      font-size: 0.95rem;
      color: var(--muted);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      border-radius: 999px;
      padding: 14px 22px;
      font-weight: 800;
      transition: 0.2s ease;
      border: 1px solid transparent;
      cursor: pointer;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--accent), #79f7d7);
      color: #04333b;
      box-shadow: 0 10px 30px rgba(93, 231, 212, 0.18);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 40px rgba(93, 231, 212, 0.26);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.06);
      color: white;
      border-color: rgba(255, 255, 255, 0.12);
    }

    .hero {
      padding: 84px 0 56px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      gap: 48px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      padding: 8px 14px;
      border-radius: 999px;
      background: rgba(93, 231, 212, 0.08);
      border: 1px solid rgba(93, 231, 212, 0.18);
      color: var(--accent);
      font-weight: 700;
      font-size: 0.9rem;
      margin-bottom: 22px;
    }

    h1 {
      font-size: clamp(2.7rem, 6vw, 5.4rem);
      line-height: 0.98;
      letter-spacing: -0.055em;
      margin-bottom: 24px;
    }

    h1 .accent {
      color: var(--accent);
    }

    .hero p {
      color: var(--muted);
      font-size: 1.14rem;
      max-width: 680px;
      margin-bottom: 28px;
    }

    .hero-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      margin-bottom: 22px;
    }

    .store-note {
      color: var(--muted);
      font-size: 0.92rem;
    }

    .hero-video-card {
      position: relative;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 20px;
      border-radius: 32px;
      background:
        linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03)),
        linear-gradient(135deg, rgba(91,188,255,0.08), rgba(93,231,212,0.05));
      border: 1px solid rgba(255,255,255,0.12);
      box-shadow: 0 20px 60px rgba(0,0,0,0.35);
      overflow: hidden;
    }

    .video-glow {
      position: absolute;
      width: 300px;
      height: 300px;
      border-radius: 50%;
      background: rgba(93, 231, 212, 0.15);
      filter: blur(80px);
      z-index: 0;
    }

    .hero-video {
      position: relative;
      z-index: 1;
      width: min(100%, 360px);
      aspect-ratio: 9 / 16;
      object-fit: cover;
      border-radius: 24px;
      border: 1px solid rgba(255,255,255,0.12);
      box-shadow: 0 18px 45px rgba(0,0,0,0.4);
      background: #000;
    }

    section {
      padding: 72px 0;
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 34px;
    }

    .section-head h2 {
      font-size: clamp(2rem, 4vw, 3.3rem);
      line-height: 1.05;
      letter-spacing: -0.04em;
      margin-bottom: 14px;
    }

    .section-head p {
      color: var(--muted);
    }

    .features {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .feature {
      background: var(--card);
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 24px;
      min-height: 230px;
    }

    .feature-icon {
      width: 50px;
      height: 50px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      background: rgba(93, 231, 212, 0.08);
      color: var(--accent);
      font-size: 1.4rem;
      margin-bottom: 18px;
    }

    .feature h3 {
      margin-bottom: 10px;
      font-size: 1.08rem;
    }

    .feature p {
      color: var(--muted);
      font-size: 0.94rem;
    }

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

    .step {
      background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.035));
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 26px;
    }

    .step-num {
      color: var(--accent);
      font-weight: 900;
      font-size: 0.85rem;
      margin-bottom: 12px;
    }

    .step h3 {
      margin-bottom: 8px;
    }

    .step p {
      color: var(--muted);
      font-size: 0.94rem;
    }

    .cta {
      background:
        radial-gradient(circle at top right, rgba(93, 231, 212, 0.13), transparent 30%),
        linear-gradient(135deg, rgba(91, 188, 255, 0.08), rgba(93, 231, 212, 0.05));
      border: 1px solid var(--card-border);
      border-radius: 30px;
      padding: 38px;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 30px;
      align-items: center;
      box-shadow: var(--shadow);
    }

    .cta h2 {
      font-size: clamp(2rem, 4vw, 3.2rem);
      line-height: 1.05;
      letter-spacing: -0.04em;
      margin-bottom: 12px;
    }

    .cta p {
      color: var(--muted);
      max-width: 650px;
    }

    .store-buttons {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .store {
      background: #06090b;
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: 16px;
      padding: 14px 18px;
      display: flex;
      align-items: center;
      gap: 14px;
      transition: 0.2s ease;
    }

    .store:hover {
      transform: translateY(-2px);
      border-color: rgba(93, 231, 212, 0.38);
    }

    .store .icon {
      font-size: 1.6rem;
    }

    .store small {
      display: block;
      color: var(--muted);
      line-height: 1.1;
      margin-bottom: 2px;
    }

    .store strong {
      font-size: 1.05rem;
    }

    .disabled {
      opacity: 0.55;
      cursor: default;
    }

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

    details {
      background: var(--card);
      border: 1px solid var(--card-border);
      border-radius: 18px;
      padding: 18px 20px;
    }

    summary {
      cursor: pointer;
      font-weight: 800;
    }

    details p {
      color: var(--muted);
      margin-top: 12px;
    }

    footer {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding: 34px 0 46px;
      color: var(--muted);
      font-size: 0.92rem;
    }

    .footer-grid {
      display: flex;
      justify-content: space-between;
      gap: 24px;
      flex-wrap: wrap;
    }

    .footer-links {
      display: flex;
      gap: 18px;
      flex-wrap: wrap;
    }

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

    @media (max-width: 900px) {
      .hero-grid,
      .cta {
        grid-template-columns: 1fr;
      }

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

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

      .nav-links {
        display: none;
      }

      .hero-video-card {
        max-width: 430px;
        margin: 0 auto;
      }
    }

    @media (max-width: 560px) {
      .container {
        width: min(100% - 20px, 1120px);
      }

      .hero {
        padding-top: 56px;
      }

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

      .hero-actions {
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }

      .cta {
        padding: 24px;
      }

      .hero-video-card {
        padding: 12px;
      }
    }
  
/* Shared enhancements: navigation, accessibility and topic pages. */
html{scroll-padding-top:100px}h1,h2,h3{overflow-wrap:break-word}a:focus-visible,summary:focus-visible,video:focus-visible{outline:3px solid var(--accent);outline-offset:5px}p a,.text-link{text-decoration:underline;text-underline-offset:4px;color:var(--accent)}.skip-link{position:fixed;left:16px;top:-90px;z-index:99;background:var(--accent);color:#04333b;padding:12px 20px;border-radius:10px}.skip-link:focus{top:12px}.mobile-menu{display:none}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.topic-card{display:block;padding:26px;border:1px solid var(--card-border);border-radius:24px;background:var(--card);transition:border-color .2s,transform .2s}.topic-card:hover{border-color:var(--accent);transform:translateY(-3px)}.topic-card h3{margin:12px 0}.topic-card h3 span{color:var(--accent)}.topic-card p{color:var(--muted);font-size:.95rem}.topic-card .step-num{font-size:.72rem;letter-spacing:.08em}.footer-top{margin-bottom:24px}.footer-top p{margin-top:8px}.footer-topics{display:flex;flex-wrap:wrap;gap:14px 26px;padding-bottom:28px;margin-bottom:28px;border-bottom:1px solid var(--card-border)}.footer-topics a:hover{color:var(--accent)}.breadcrumb{padding-top:28px;color:var(--muted);font-size:.9rem}.breadcrumb a{text-decoration:underline}.page-hero{padding:48px 0}.page-hero h1{font-size:clamp(2.5rem,5.6vw,4.8rem);max-width:950px;line-height:1.06}.page-hero p{max-width:780px}.article-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(220px,1fr);gap:60px;padding:64px 0}.article-section{padding:0 0 40px;scroll-margin-top:110px}.article-section h2{font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.2;letter-spacing:-.025em;margin-bottom:20px}.article-section p{color:var(--muted);margin-bottom:18px;font-size:1.04rem}.article-aside{align-self:start;position:sticky;top:110px;border:1px solid var(--card-border);border-radius:24px;background:var(--card);padding:26px}.article-aside h2{font-size:1rem;margin-bottom:16px}.article-aside a{display:block;color:var(--muted);margin:14px 0;text-decoration:underline;text-underline-offset:4px}.article-aside a:hover{color:var(--accent)}.aside-note{font-size:.9rem;color:var(--muted);border-top:1px solid var(--card-border);padding-top:18px;margin-top:24px}.faq-section{padding-top:20px}.all-questions{margin-top:24px}.video-caption{font-size:.9rem;color:var(--muted);margin-top:14px;text-align:center}.home-hero h1{font-size:clamp(2.65rem,4.7vw,4.1rem);line-height:1.05}.home-hero .hero-grid{gap:40px}.intro-line{padding:22px 0;border-block:1px solid var(--card-border);color:var(--muted)}.intro-line strong{color:var(--text)}.faq-intro{max-width:780px;margin-bottom:28px;color:var(--muted)}
@media(max-width:900px){.mobile-menu{display:block;position:relative;padding:8px 14px;flex-shrink:0}.mobile-menu nav{position:absolute;right:0;top:52px;background:#0a1d27;border:1px solid var(--card-border);border-radius:16px;padding:16px;min-width:240px;box-shadow:var(--shadow)}.mobile-menu nav a{display:block;padding:12px}.topic-grid{grid-template-columns:repeat(2,1fr)}.article-layout{grid-template-columns:1fr;gap:20px}.article-aside{position:static;grid-row:1}.article-aside nav{display:flex;flex-wrap:wrap;gap:0 20px}.hero-video-card{width:100%}}@media(max-width:560px){.topic-grid{grid-template-columns:1fr}.page-hero{padding:36px 0}.article-layout{padding:38px 0}.footer-topics{flex-direction:column}section{padding:48px 0}.nav{min-height:68px}.store-note{font-size:.85rem}.hero p{font-size:1.05rem}.hero-video{max-width:290px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}