:root { --bp-sticky-top: calc(60px + env(safe-area-inset-top, 0px) + 6px); }

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

  body {
    font-size: var(--bp-type-body);
    line-height: 1.7;
    min-height: 100vh;
  }

  header { background: var(--bp-surface); }

  .hh-alpha-bar {
    background: var(--bp-surface); border: 1px solid var(--bp-line); border-radius:var(--bp-r-md);
    padding: 10px 14px; margin: 0 0 12px;

    display: grid; grid-template-columns: repeat(auto-fill, minmax(32px, 1fr)); gap: 6px;
  }
  .hh-alpha-link {
    position: relative;
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 28px; height: 28px; padding: 0 8px;
    border-radius:var(--bp-r-sm); font-size: var(--bp-type-sm); font-weight: 700;
    background: var(--bp-border-subtle); border: 1px solid var(--bp-line);
    color: var(--bp-text-2); text-decoration: none; transition: all .12s;
  }
  .hh-alpha-link::before { content:''; position:absolute; top:50%; left:50%; min-width:44px; min-height:44px; width:100%; height:100%; transform:translate(-50%,-50%); }
  .hh-alpha-link:hover { background: rgba(var(--bp-accent-cyan-rgb),0.12); border-color: rgba(var(--bp-accent-cyan-rgb),0.4); color: var(--bp-art-cyan); }

  .hh-tabs { display: flex; gap: 4px; margin: 8px 0 12px; border-bottom: 1px solid var(--bp-border-subtle); }
  .hh-tab {
    padding: 9px 16px; font-size: var(--bp-type-sm); font-weight: 600;
    color: var(--bp-text-3); cursor: pointer; border: none; background: transparent;
    border-bottom: 2px solid transparent; transition: all .15s;
    font-family: inherit;
  }
  .hh-tab.active { color: var(--bp-text); border-bottom-color: var(--bp-art-cyan); }
  .hh-tab:hover { color: var(--bp-text); }

  .hh-section { padding: 16px 0 8px; }
  .hh-section h2 {
    font-size: var(--bp-type-body); font-weight: 800; color: var(--bp-text);
    letter-spacing: -0.02em;
    margin: 0 0 12px; display: flex; align-items: center; gap: 10px;
  }
  .hh-section h2 .hh-count {
    font-size: var(--bp-type-xs); font-weight: 700; color: var(--bp-text-3);
    background: var(--bp-raised); border: 1px solid var(--bp-border2);
    border-radius:var(--bp-r-pill); padding: 2px 9px;
  }
  .hh-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 8px;
  }
  .hh-card {
    display: block; background: var(--bp-surface); border: 1px solid var(--bp-line);
    border-radius:var(--bp-r-sm); padding: 10px 12px; text-decoration: none;
    transition: all .12s;
  }
  .hh-card:hover {
    background: rgba(var(--bp-accent-cyan-rgb),0.06); border-color: rgba(var(--bp-accent-cyan-rgb),0.4);
    transform: translateY(-1px);
  }
  .hh-tk {
    font-size: var(--bp-type-body); font-weight: 800; color: var(--bp-text);
    font-family: 'Space Grotesk', system-ui, sans-serif;
    letter-spacing: -0.3px;
  }
  .hh-name {
    font-size: var(--bp-type-sm); color: var(--bp-text-3); margin-top: 2px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  }
  @media (max-width: 720px) {
    .hh-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 6px; }
    .hh-card { padding: 9px 10px; }
  }