:root {
    --bg: #000000;
    --card: #212225;
    --card-selected: #2e3135;
    --text: #ffffff;
    --text-secondary: #b0b4ba;
    --accent: #208aef;
    --accent-dark: #1670c7;
    --max-width: 1100px;
  }

  * { box-sizing: border-box; }

  html { scroll-behavior: smooth; }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
  }

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

  a { color: inherit; }

  .wrap {
    max-width: var(--max-width);
    margin: 0 auto;
    padding-inline: 24px;
  }

  /* --- Nav --- */
  .nav {
    padding-block: 20px;
    position: sticky;
    top: 0;
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(10px);
    z-index: 10;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }
  .nav .wrap { display: flex; align-items: center; justify-content: space-between; }
  .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; text-decoration: none; }
  .brand img { width: 32px; height: 32px; border-radius: 8px; }
  .nav-cta {
    display: inline-flex;
    align-items: center;
    padding: 8px 18px;
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
  }

  /* --- Hero --- */
  .hero {
    padding-block: 64px 40px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
  }
  .hero h1 {
    font-size: clamp(32px, 5vw, 52px);
    line-height: 1.08;
    margin: 0 0 20px;
    letter-spacing: -0.02em;
  }
  .hero h1 span { color: var(--accent); }
  .hero p.lede {
    color: var(--text-secondary);
    font-size: 18px;
    max-width: 46ch;
    margin: 0 0 32px;
  }

  .store-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 12px; }
  .store-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: 12px;
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    text-decoration: none;
    color: var(--text);
    transition: background 0.15s ease, transform 0.15s ease;
  }
  .store-badge:hover { background: var(--card-selected); transform: translateY(-1px); }
  .store-badge svg { width: 22px; height: 22px; flex-shrink: 0; }
  .store-badge .store-label { display: flex; flex-direction: column; line-height: 1.2; }
  .store-badge .store-label small { font-size: 11px; color: var(--text-secondary); }
  .store-badge .store-label strong { font-size: 15px; }

  .store-note { color: var(--text-secondary); font-size: 13px; margin: 0; }

  /* --- Phone mockup placeholder --- */
  .phone-frame {
    justify-self: center;
    width: min(300px, 80vw);
    aspect-ratio: 9 / 19.5;
    border-radius: 40px;
    border: 10px solid var(--card);
    background: linear-gradient(160deg, #14151a 0%, #000 70%);
    box-shadow: 0 30px 80px -20px rgba(32, 138, 239, 0.35);
    overflow: hidden;
    position: relative;
  }
  .phone-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .phone-frame .placeholder-label {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 24px;
    color: var(--text-secondary);
    font-size: 13px;
    border: 1px dashed rgba(255, 255, 255, 0.15);
    margin: 8px;
    border-radius: 32px;
  }

  /* --- Features --- */
  .features { padding-block: 40px 72px; }
  .features h2 {
    font-size: clamp(24px, 3.5vw, 34px);
    text-align: center;
    margin: 0 0 8px;
  }
  .features > .wrap > p {
    text-align: center;
    color: var(--text-secondary);
    max-width: 50ch;
    margin: 0 auto 48px;
  }
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .feature-card {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 18px;
    padding: 24px 20px;
  }
  .feature-card .icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(32, 138, 239, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
  }
  .feature-card .icon svg { width: 22px; height: 22px; color: var(--accent); }
  .feature-card h3 { font-size: 16px; margin: 0 0 8px; }
  .feature-card p { font-size: 14px; color: var(--text-secondary); margin: 0; }

  /* --- Screenshot showcase (placeholder) --- */
  .showcase { padding-block: 0 72px; }
  .showcase-strip {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: thin;
  }
  .showcase-strip .shot {
    flex: 0 0 auto;
    width: 200px;
    aspect-ratio: 9 / 19.5;
    border-radius: 24px;
    border: 1px dashed rgba(255, 255, 255, 0.15);
    background: var(--card);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 12px;
    text-align: center;
    padding: 16px;
    overflow: hidden;
  }
  .showcase-strip .shot img { width: 100%; height: 100%; object-fit: cover; border-radius: 22px; }

  /* --- Bottom CTA --- */
  .cta {
    padding-block: 56px 80px;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }
  .cta h2 { font-size: clamp(24px, 4vw, 36px); margin: 0 0 12px; }
  .cta p { color: var(--text-secondary); margin: 0 0 28px; }
  .cta .store-row { justify-content: center; }

  footer {
    padding-block: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
    font-size: 13px;
  }
  footer .wrap { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

  @media (max-width: 860px) {
    .hero { grid-template-columns: 1fr; text-align: center; }
    .hero .store-row, .hero .store-note { justify-content: center; text-align: center; }
    .hero .lede { margin-inline: auto; }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 520px) {
    .feature-grid { grid-template-columns: 1fr; }
  }

  /* --- Join page (invite-link web fallback) --- */
  .join-main {
    min-height: calc(100vh - 73px);
    display: flex;
    align-items: center;
    padding-block: 48px;
  }
  .join-card {
    max-width: 420px;
    margin: 0 auto;
    text-align: center;
  }
  .join-card h1 { font-size: 28px; margin: 0 0 8px; }
  .join-card p.lede { font-size: 15px; margin: 0 auto 28px; max-width: 40ch; }

  .code-card {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 24px;
  }
  .code-card .code-label { font-size: 12px; color: var(--text-secondary); margin: 0 0 6px; }
  .code-card .code-value {
    font-family: ui-monospace, "SF Mono", Consolas, monospace;
    font-size: 22px;
    letter-spacing: 0.05em;
    margin: 0 0 16px;
    word-break: break-all;
  }
  .code-card .copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: var(--card-selected);
    color: var(--text);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
  }
  .code-card .copy-btn:hover { background: rgba(255, 255, 255, 0.12); }
  .code-card .copy-note { font-size: 12px; color: var(--accent); margin: 10px 0 0; min-height: 1em; }

  .open-app-btn {
    display: block;
    width: 100%;
    padding: 14px 20px;
    border-radius: 12px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    margin-bottom: 16px;
  }
  .open-app-btn:hover { background: var(--accent-dark); }

  .join-steps {
    text-align: left;
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0 0 28px;
    padding-left: 20px;
  }
  .join-steps li { margin-bottom: 6px; }

  .join-card .store-row { justify-content: center; }
  .join-card .store-note { margin-top: 12px; }