/* ══════════════════════════════════════════
       PulseGrowth · CellSplit visual language
       - Glassmorphism real (backdrop-filter)
       - Sistema de sombras y blur de CellSplit
       - Gradiente de fondo via body::before
       - Tab bar: bottom móvil / top desktop
    ══════════════════════════════════════════ */

    :root {
      --tint:       #007aff;
      --tint-weak:  rgba(0, 122, 255, 0.15);
      --tint-glass: rgba(0, 122, 255, 0.08);

      --bg:         #f2f2f7;
      --bg-elev:    rgba(255, 255, 255, 0.76);
      --bg-glass:   rgba(255, 255, 255, 0.60);
      --bg-field:   rgba(118, 118, 128, 0.10);

      --label:      #1c1c1e;
      --secondary:  #6e6e73;
      --tertiary:   #aeaeb2;

      --glass-border: rgba(255, 255, 255, 0.65);
      --separator:  rgba(60, 60, 67, 0.18);
      --stroke-1:   rgba(60, 60, 67, 0.20);
      --stroke-2:   rgba(60, 60, 67, 0.13);
      --stroke-3:   rgba(60, 60, 67, 0.09);

      --nav-bg:     rgba(242, 242, 247, 0.86);
      --btn-bg:     rgba(255, 255, 255, 0.88);
      --btn-bg-ghost-hover: rgba(118, 118, 128, 0.10);

      --ok:         #30d158;
      --warn:       #ff9f0a;
      --danger:     #ff453a;
      --danger-bg:  rgba(255, 69, 58, 0.12);
      --warn-bg:    rgba(255, 159, 10, 0.12);
      --ok-bg:      rgba(48, 209, 88, 0.12);

      --shadow-xs:  0 1px 4px rgba(0,0,0,0.06);
      --shadow-sm:  0 4px 16px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.05);
      --shadow:     0 8px 32px rgba(0,0,0,0.10), 0 2px 8px rgba(0,0,0,0.06);
      --shadow-lg:  0 24px 72px rgba(0,0,0,0.14), 0 8px 24px rgba(0,0,0,0.08);

      --radius:     22px;
      --radius-sm:  16px;
      --radius-xs:  11px;
      --maxw:       620px;

      --blur-sm:    blur(18px) saturate(160%);
      --blur:       blur(32px) saturate(180%);
      --blur-heavy: blur(52px) saturate(210%);

      --safe-top:   env(safe-area-inset-top,    0px);
      --safe-bot:   env(safe-area-inset-bottom, 0px);
      --safe-left:  env(safe-area-inset-left,   0px);
      --safe-right: env(safe-area-inset-right,  0px);

      --spring: cubic-bezier(0.34, 1.56, 0.64, 1);
      --ease:   cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    @media (prefers-color-scheme: dark) {
      :root {
        --bg:         #000000;
        --bg-elev:    rgba(28, 28, 30, 0.88);
        --bg-glass:   rgba(28, 28, 30, 0.74);
        --bg-field:   rgba(118, 118, 128, 0.22);

        --label:      #ffffff;
        --secondary:  #98989f;
        --tertiary:   #6d6d72;

        --glass-border: rgba(255, 255, 255, 0.11);
        --separator:  rgba(84, 84, 88, 0.50);
        --stroke-1:   rgba(84, 84, 88, 0.46);
        --stroke-2:   rgba(84, 84, 88, 0.32);
        --stroke-3:   rgba(84, 84, 88, 0.22);

        --nav-bg:     rgba(0, 0, 0, 0.86);
        --btn-bg:     rgba(44, 44, 46, 0.92);
        --btn-bg-ghost-hover: rgba(118, 118, 128, 0.22);

        --danger-bg:  rgba(255, 69, 58, 0.18);
        --warn-bg:    rgba(255, 159, 10, 0.18);
        --ok-bg:      rgba(48, 209, 88, 0.18);

        --shadow:     0 8px 32px rgba(0,0,0,0.58), 0 2px 8px rgba(0,0,0,0.36);
        --shadow-lg:  0 24px 72px rgba(0,0,0,0.72), 0 8px 24px rgba(0,0,0,0.48);

        --tint:       #0a84ff;
        --tint-weak:  rgba(10, 132, 255, 0.18);
        --tint-glass: rgba(10, 132, 255, 0.10);
      }
    }

    /* ── Reset ───────────────────────────────── */
    *, *::before, *::after { box-sizing: border-box; }

    html {
      height: 100%;
      -webkit-text-size-adjust: 100%;
      text-size-adjust: 100%;
    }

    body {
      min-height: 100%;
      margin: 0;
      background: var(--bg);
      color: var(--label);
      font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      line-height: 1.38;
      padding: calc(12px + var(--safe-top)) 14px calc(28px + var(--safe-bot));
      overscroll-behavior-y: contain;
      -webkit-overflow-scrolling: touch;
    }

    /* Mesh gradient — profundidad real al glass */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      z-index: -1;
      background:
        radial-gradient(ellipse 80% 55% at 15% -5%, rgba(0, 122, 255, 0.10) 0%, transparent 65%),
        radial-gradient(ellipse 55% 50% at 88% 105%, rgba(88, 86, 214, 0.09) 0%, transparent 65%);
      pointer-events: none;
    }

    @media (prefers-color-scheme: dark) {
      body::before {
        background:
          radial-gradient(ellipse 80% 55% at 15% -5%, rgba(10, 132, 255, 0.14) 0%, transparent 65%),
          radial-gradient(ellipse 55% 50% at 88% 105%, rgba(94, 92, 230, 0.12) 0%, transparent 65%);
      }
    }

    button, a, input, select, label {
      -webkit-tap-highlight-color: transparent;
      touch-action: manipulation;
    }

    .container { max-width: var(--maxw); margin: 0 auto; }

    .mono {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
      font-variant-numeric: tabular-nums;
    }
    .unit { color: var(--secondary); font-weight: 600; font-size: 0.92em; }

    /* ── Nav ─────────────────────────────────── */
    .nav {
      position: sticky;
      top: 0;
      z-index: 50;
      background: var(--nav-bg);
      backdrop-filter: var(--blur);
      -webkit-backdrop-filter: var(--blur);
      border-bottom: 1px solid var(--separator);
      padding-top: var(--safe-top, 0px);
    }

    .nav-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 0 14px;
      max-width: var(--maxw);
      margin: 0 auto;
    }

    .nav-row-brand {
      padding-top: 10px;
      padding-bottom: 8px;
    }

    .nav-row-tools {
      padding-top: 6px;
      padding-bottom: 10px;
      border-top: 1px solid var(--stroke-3);
      justify-content: flex-end;
      gap: 6px;
    }

    .brand {
      display: flex;
      gap: 10px;
      align-items: center;
      min-width: 0;
      flex: 1;
    }

    .app-icon {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      border: 1px solid var(--stroke-3);
      box-shadow: var(--shadow-sm);
      object-fit: contain;
      flex-shrink: 0;
    }

    .brand-text { min-width: 0; }

    .app-title {
      margin: 0;
      font-size: 1.10rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.1;
    }

    .app-subtitle {
      margin-top: 2px;
      color: var(--secondary);
      font-size: 0.74rem;
      font-weight: 500;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    @media (max-width: 400px) {
      .app-icon { width: 30px; height: 30px; }
      .app-title { font-size: 0.96rem; }
    }

    /* ── Buttons ─────────────────────────────── */
    .btn {
      border: 1px solid var(--glass-border);
      background: var(--btn-bg);
      backdrop-filter: var(--blur-sm);
      -webkit-backdrop-filter: var(--blur-sm);
      color: var(--label);
      padding: 8px 14px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.86rem;
      cursor: pointer;
      transition: transform 0.10s ease, opacity 0.14s ease, box-shadow 0.14s ease;
      text-decoration: none;
      display: inline-flex;
      gap: 6px;
      align-items: center;
      user-select: none;
      white-space: nowrap;
      box-shadow: var(--shadow-xs);
      font-family: inherit;
    }

    .btn:active { transform: scale(0.95); opacity: 0.86; }

    .btn-primary {
      background: var(--tint);
      border-color: transparent;
      color: #fff;
      box-shadow: 0 4px 18px rgba(0, 122, 255, 0.40), 0 1px 4px rgba(0, 122, 255, 0.22);
      font-weight: 700;
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
    }

    .btn-primary:active {
      transform: scale(0.97);
      box-shadow: 0 2px 8px rgba(0, 122, 255, 0.28);
    }

    .btn-danger {
      background: var(--danger-bg);
      border-color: rgba(255, 69, 58, 0.28);
      color: var(--danger);
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
    }

    .btn-secondary {
      background: var(--tint-glass);
      border-color: rgba(0, 122, 255, 0.22);
      color: var(--tint);
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
    }

    .btn-ghost {
      background: transparent;
      border-color: transparent;
      box-shadow: none;
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
      color: var(--tint);
      font-weight: 600;
    }

    .btn-ghost:hover { background: var(--btn-bg-ghost-hover); }

    .btn-info-badge {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--tint);
      color: #ffffff;
      border: none;
      font-weight: 800;
      font-size: 1.05rem;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      transition: opacity 0.14s ease, transform 0.10s ease;
      box-shadow: 0 2px 8px rgba(0, 122, 255, 0.30);
      font-family: inherit;
      user-select: none;
    }
    .btn-info-badge:active { opacity: 0.80; transform: scale(0.92); }

    .btn-block {
      width: 100%;
      justify-content: center;
      padding: 15px;
      font-size: 1rem;
      border-radius: 999px;
      font-weight: 700;
      letter-spacing: -0.01em;
      min-height: 50px;
    }

    .btn-install[hidden] { display: none !important; }

    .icon { width: 16px; height: 16px; display: inline-block; }

    /* ── Segmented control ───────────────────── */
    .seg {
      background: var(--bg-field);
      border: 1px solid var(--stroke-2);
      border-radius: 999px;
      padding: 3px;
      display: inline-flex;
      gap: 2px;
    }

    .seg button {
      border: 0;
      background: transparent;
      color: var(--secondary);
      padding: 6px 12px;
      border-radius: 999px;
      cursor: pointer;
      font-weight: 700;
      font-size: 0.83rem;
      transition: background 0.12s ease, color 0.12s ease, box-shadow 0.12s ease;
      white-space: nowrap;
      font-family: inherit;
    }

    .seg button[aria-selected="true"] {
      background: var(--bg-elev);
      color: var(--label);
      box-shadow: var(--shadow-sm);
    }

    /* ── Module tiles ────────────────────────── */
    .tiles {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 4px;
      margin-bottom: 16px;
      background: var(--bg-field);
      border: 1px solid var(--stroke-2);
      border-radius: 18px;
      padding: 4px;
    }

    .tile {
      text-align: center;
      border: 1px solid transparent;
      border-radius: 14px;
      background: transparent;
      padding: 11px 8px;
      cursor: pointer;
      transition: background 0.14s ease, box-shadow 0.14s ease, border-color 0.14s ease;
      display: flex;
      flex-direction: column;
      gap: 5px;
      align-items: center;
      justify-content: center;
      min-width: 0;
      font-family: inherit;
    }

    .tile:active { transform: scale(0.98); }

    .tile.active {
      background: var(--bg-elev);
      backdrop-filter: var(--blur-sm);
      -webkit-backdrop-filter: var(--blur-sm);
      border-color: var(--glass-border);
      box-shadow: var(--shadow-sm);
    }

    .tile-badge {
      width: 30px;
      height: 30px;
      border-radius: 999px;
      background: var(--bg-field);
      border: 1px solid var(--stroke-2);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--secondary);
      font-weight: 800;
      font-size: 0.78rem;
      flex-shrink: 0;
      transition: background 0.14s ease, color 0.14s ease, border-color 0.14s ease;
    }

    .tile.active .tile-badge {
      background: var(--tint);
      color: #fff;
      border-color: transparent;
      box-shadow: 0 2px 8px rgba(0, 122, 255, 0.32);
    }

    .tile-title {
      font-weight: 700;
      letter-spacing: -0.01em;
      font-size: 0.85rem;
      margin: 0;
      color: var(--secondary);
      transition: color 0.14s ease;
    }

    .tile.active .tile-title { color: var(--label); font-weight: 800; }

    .tile-sub {
      margin: 0;
      color: var(--tertiary);
      font-size: 0.70rem;
      font-weight: 500;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    @media (max-width: 400px) {
      .tile { padding: 8px 4px; }
      .tile-sub { display: none; }
    }

    /* ── Toggles ─────────────────────────────── */
    .toggle-row {
      display: flex;
      gap: 8px;
      align-items: center;
      flex-wrap: wrap;
    }

    .toggle {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 13px;
      border-radius: 999px;
      border: 1px solid var(--stroke-2);
      background: var(--bg-field);
      color: var(--secondary);
      font-weight: 700;
      font-size: 0.84rem;
      user-select: none;
      cursor: pointer;
      min-height: 42px;
      transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
    }

    .toggle:has(input:checked) {
      background: var(--tint-glass);
      border-color: rgba(0, 122, 255, 0.28);
      color: var(--tint);
    }

    .toggle input {
      width: 17px; height: 17px;
      accent-color: var(--tint);
      cursor: pointer;
    }

    /* ── Chips (iOS 26 toggle chips) ─────────── */
    .chip-row {
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }

    .chip {
      border: 1px solid var(--stroke-1);
      background: var(--bg-field);
      color: var(--secondary);
      padding: 9px 22px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.88rem;
      cursor: pointer;
      transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease, transform 0.10s ease;
      white-space: nowrap;
      font-family: inherit;
      user-select: none;
      min-height: 44px;
    }

    .chip:active { transform: scale(0.95); }

    .chip[aria-pressed="true"] {
      background: var(--tint);
      border-color: transparent;
      color: #fff;
      font-weight: 700;
      box-shadow: 0 3px 12px rgba(0, 122, 255, 0.36);
    }

    /* ── iOS install banner ──────────────────── */
    .ios-install-banner {
      display: none;
      align-items: center;
      gap: 10px;
      padding: 12px 14px;
      background: var(--bg-elev);
      backdrop-filter: var(--blur-sm);
      -webkit-backdrop-filter: var(--blur-sm);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-sm);
      font-size: 0.84rem;
      font-weight: 500;
      color: var(--secondary);
      margin-bottom: 12px;
    }
    .ios-install-banner.visible { display: flex; }
    .ios-install-banner strong { color: var(--label); }
    .ios-install-banner svg { flex-shrink: 0; color: var(--tint); }

    /* ── Panels ──────────────────────────────── */
    .panel { display: none; }
    .panel.active { display: block; }

    /* ── Card ────────────────────────────────── */
    .card {
      background: var(--bg-elev);
      backdrop-filter: var(--blur);
      -webkit-backdrop-filter: var(--blur);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 20px;
      overflow: hidden;
    }

    .card.invalid {
      border-color: rgba(255, 69, 58, 0.52);
      box-shadow: 0 0 0 4px rgba(255, 69, 58, 0.12), var(--shadow);
    }

    .card-header {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 18px;
    }

    .card-h {
      margin: 0;
      font-size: 1.10rem;
      font-weight: 800;
      letter-spacing: -0.02em;
    }

    .card-desc {
      margin: 5px 0 0;
      color: var(--secondary);
      font-weight: 500;
      font-size: 0.88rem;
    }

    .card-right {
      display: flex;
      gap: 8px;
      align-items: center;
      flex-shrink: 0;
    }

    .pill {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      padding: 5px 10px;
      border-radius: 999px;
      background: var(--bg-field);
      border: 1px solid var(--stroke-2);
      color: var(--secondary);
      font-weight: 700;
      font-size: 0.76rem;
      white-space: nowrap;
    }

    .pill.ok   { color: var(--ok);   border-color: rgba(48,209,88,0.38);  background: var(--ok-bg);   }
    .pill.warn { color: var(--warn); border-color: rgba(255,159,10,0.38); background: var(--warn-bg); }

    /* ── Form ────────────────────────────────── */
    .form { display: grid; gap: 14px; }
    .field-group { display: grid; gap: 8px; }

    label {
      font-size: 0.84rem;
      font-weight: 700;
      color: var(--label);
      letter-spacing: -0.01em;
    }

    .hint {
      color: var(--tertiary);
      font-weight: 500;
      font-size: 0.79rem;
    }

    input, select {
      width: 100%;
      background: var(--bg-field);
      border: 1px solid var(--stroke-1);
      border-radius: var(--radius-sm);
      padding: 13px 14px;
      font-size: 1rem;         /* ≥16px: evita zoom en iOS */
      font-weight: 600;
      color: var(--label);
      outline: none;
      min-height: 48px;        /* touch target */
      transition: box-shadow 0.15s ease, border-color 0.15s ease, background 0.15s ease;
      -webkit-appearance: none;
      appearance: none;
      font-family: inherit;
    }

    select {
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7' viewBox='0 0 12 7'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238e8e93' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 13px center;
      padding-right: 34px;
    }

    input::placeholder { color: var(--tertiary); font-weight: 500; }

    input:focus, select:focus {
      border-color: rgba(0, 122, 255, 0.62);
      box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.12);
      background: rgba(0, 122, 255, 0.04);
    }

    .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .grid-3 { display: grid; grid-template-columns: 1fr 1fr 96px; gap: 10px; align-items: end; }

    .input-with-select {
      display: grid;
      grid-template-columns: 1fr 96px;
      gap: 10px;
      align-items: center;
    }
    .input-with-select select { height: 48px; }

    .actions-row {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 10px;
      align-items: center;
    }

    @media (max-width: 480px) {
      .grid-2 { grid-template-columns: 1fr; }
      .grid-3 { grid-template-columns: 1fr 84px; }
      .grid-3 > :first-child { grid-column: 1 / -1; }
      .input-with-select { grid-template-columns: 1fr 84px; }
    }

    /* ── Results ─────────────────────────────── */
    .result {
      margin-top: 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--glass-border);
      background: var(--bg-glass);
      backdrop-filter: var(--blur-sm);
      -webkit-backdrop-filter: var(--blur-sm);
      overflow: hidden;
      display: none;
      box-shadow: var(--shadow-sm);
    }

    .result.visible { display: block; }

    .result.error {
      border-color: rgba(255, 69, 58, 0.48);
      box-shadow: 0 0 0 4px rgba(255, 69, 58, 0.12);
    }

    .result.warn {
      border-color: rgba(255, 159, 10, 0.48);
      box-shadow: 0 0 0 4px rgba(255, 159, 10, 0.10);
    }

    .result-head {
      padding: 12px 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      border-bottom: 1px solid var(--stroke-3);
      background: var(--bg-field);
    }

    .result-title {
      margin: 0;
      font-weight: 800;
      letter-spacing: -0.01em;
      font-size: 0.90rem;
      color: var(--label);
    }

    .result-list { padding: 0; margin: 0; list-style: none; }

    .row {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 13px 16px;
      border-bottom: 1px solid var(--stroke-3);
      min-height: 52px;
    }
    .row:last-child { border-bottom: none; }

    .k { color: var(--secondary); font-weight: 600; font-size: 0.86rem; line-height: 1.35; }
    .v { color: var(--label); font-weight: 700; font-size: 1.05rem; text-align: right; word-break: break-word; }

    @media (max-width: 400px) {
      .row { grid-template-columns: 1fr; min-height: auto; }
      .v { text-align: left; }
    }

    /* ── Details / Meta ──────────────────────── */
    details {
      padding: 10px 16px 14px;
      border-top: 1px solid var(--stroke-3);
    }

    details > summary {
      cursor: pointer;
      color: var(--tint);
      font-weight: 700;
      font-size: 0.86rem;
      list-style: none;
      outline: none;
      min-height: 36px;
      display: flex;
      align-items: center;
    }
    details > summary::-webkit-details-marker { display: none; }

    .meta {
      margin-top: 10px;
      color: var(--secondary);
      font-weight: 500;
      font-size: 0.86rem;
      line-height: 1.45;
    }

    .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }

    .tag {
      display: inline-flex;
      align-items: center;
      padding: 6px 10px;
      border-radius: 999px;
      border: 1px solid var(--stroke-2);
      background: var(--bg-field);
      color: var(--secondary);
      font-weight: 700;
      font-size: 0.78rem;
      white-space: nowrap;
    }
    .tag.ok   { color: var(--ok);   border-color: rgba(48,209,88,0.38);  background: var(--ok-bg);   }
    .tag.warn { color: var(--warn); border-color: rgba(255,159,10,0.38); background: var(--warn-bg); }

    /* ── Bottom Sheet ────────────────────────── */
    .sheet-backdrop {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.38);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      display: none;
      align-items: flex-end;
      justify-content: center;
      z-index: 200;
      padding: 12px;
      padding-bottom: calc(12px + var(--safe-bot));
    }
    .sheet-backdrop.open { display: flex; }

    .sheet {
      width: min(640px, 100%);
      max-height: 84vh;
      background: var(--bg-elev);
      backdrop-filter: var(--blur-heavy);
      -webkit-backdrop-filter: var(--blur-heavy);
      border-radius: 26px;
      border: 1px solid var(--glass-border);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .sheet-header {
      padding: 14px 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      border-bottom: 1px solid var(--stroke-3);
      flex-shrink: 0;
    }

    .sheet-title {
      margin: 0;
      font-weight: 800;
      letter-spacing: -0.02em;
      font-size: 1.05rem;
    }

    .sheet-body {
      padding: 16px;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
      flex: 1;
    }

    .section {
      border: 1px solid var(--stroke-2);
      border-radius: var(--radius-sm);
      background: var(--bg-field);
      padding: 14px;
      margin-bottom: 10px;
    }
    .section:last-child { margin-bottom: 0; }

    .section h4 {
      margin: 0 0 6px;
      font-size: 0.95rem;
      font-weight: 800;
      letter-spacing: -0.01em;
    }

    .section p {
      margin: 0;
      color: var(--secondary);
      font-weight: 500;
      line-height: 1.52;
      font-size: 0.88rem;
    }

    .formula {
      margin-top: 10px;
      padding: 11px 14px;
      border-radius: var(--radius-xs);
      border: 1px solid rgba(0, 122, 255, 0.24);
      background: rgba(0, 122, 255, 0.08);
      font-weight: 700;
      text-align: center;
      color: var(--label);
    }

    /* ── HostCell Suite Pill (header) ─────────── */
    .hc-suite-pill {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.42rem 0.78rem;
      border-radius: 14px;
      background: linear-gradient(135deg, #F5F9FF 0%, #E8F0FE 100%);
      border: 1px solid #C5D9FB;
      box-shadow: 0 1px 3px rgba(60,64,67,0.12);
      text-decoration: none;
      transition: transform 110ms ease, box-shadow 130ms ease, background 130ms ease;
      flex-shrink: 0;
      -webkit-tap-highlight-color: transparent;
      touch-action: manipulation;
    }
    .hc-suite-pill:hover {
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(60,64,67,0.15);
      background: linear-gradient(135deg, #EEF5FF 0%, #DCEBFF 100%);
    }
    .hc-suite-pill:active { transform: scale(0.95); opacity: 0.88; }
    .hc-suite-label {
      font-size: 0.70rem;
      font-weight: 800;
      letter-spacing: 0.04em;
      color: #4285F4;
      white-space: nowrap;
      text-transform: uppercase;
      font-family: inherit;
    }
    @media (prefers-color-scheme: dark) {
      .hc-suite-pill {
        background: linear-gradient(135deg, rgba(66,133,244,0.14) 0%, rgba(66,133,244,0.22) 100%);
        border-color: rgba(66,133,244,0.36);
      }
      .hc-suite-pill:hover {
        background: linear-gradient(135deg, rgba(66,133,244,0.20) 0%, rgba(66,133,244,0.30) 100%);
      }
      .hc-suite-label { color: #7BAAF7; }
    }
    @media (max-width: 500px) {
      .hc-suite-pill { padding: 0.36rem 0.55rem; }
      .hc-suite-label { font-size: 0.63rem; letter-spacing: 0.02em; }
    }

    /* ── HostCell Footer ─────────────────────── */
    footer.hc-footer {
      margin-top: 24px;
      padding: 14px 16px;
      padding-bottom: calc(14px + var(--safe-bot));
      border-top: 1px solid var(--separator);
      background: var(--nav-bg);
      backdrop-filter: var(--blur-sm);
      -webkit-backdrop-filter: var(--blur-sm);
    }
    .hc-footer-inner {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-wrap: wrap;
      max-width: var(--maxw);
      margin: 0 auto;
    }
    .hc-footer-suite {
      display: flex;
      flex-direction: column;
      gap: 1px;
      min-width: 0;
    }
    .hc-footer-name {
      font-size: 0.82rem;
      font-weight: 700;
      color: #4285F4;
      white-space: nowrap;
    }
    .hc-footer-slogan {
      font-size: 0.66rem;
      color: var(--secondary);
      white-space: nowrap;
      font-style: italic;
    }
    .hc-footer-author {
      font-size: 0.77rem;
      color: var(--secondary);
      white-space: nowrap;
      margin-left: auto;
    }
    .hc-footer-github {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 0.40rem 0.88rem;
      border-radius: 999px;
      background: #1e2330;
      color: #FFFFFF;
      font-size: 0.77rem;
      font-weight: 600;
      text-decoration: none;
      transition: background 130ms ease, transform 110ms ease, box-shadow 130ms ease;
      box-shadow: 0 1px 4px rgba(0,0,0,0.20);
      flex-shrink: 0;
      white-space: nowrap;
      -webkit-tap-highlight-color: transparent;
      touch-action: manipulation;
    }
    .hc-footer-github:hover {
      background: #2d3348;
      transform: translateY(-1px);
      box-shadow: 0 3px 9px rgba(0,0,0,0.25);
    }
    .hc-footer-github:active { transform: scale(0.96); opacity: 0.88; }
    .hc-footer-github svg { flex-shrink: 0; }

    @media (max-width: 500px) {
      .hc-footer-inner { gap: 7px; }
      .hc-footer-author { margin-left: 0; }
      .hc-footer-github { margin-left: auto; }
    }

    @media (prefers-reduced-motion: reduce) {
      * { transition: none !important; }
    }