.szl-root {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
  }

  .szl-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    align-items: start;
  }

  @media (min-width: 1024px) {
    .szl-grid {
      grid-template-columns: 340px 1fr;
    }
  }

  .szl-panel-left {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .szl-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 2.5rem;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }

  .szl-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0;
  }

  .szl-card-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6366f1;
    flex-shrink: 0;
  }

  .szl-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .szl-section-border {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
  }

  .szl-section-label {
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    display: block;
  }

  .szl-platform-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
  }

  .szl-platform-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    background: var(--bg-page);
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-muted);
  }

  .szl-platform-btn:hover {
    border-color: rgba(99, 102, 241, 0.5);
    color: var(--text-main);
  }

  .szl-platform-btn.szl-btn-active {
    border-color: #6366f1;
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
  }

  .szl-platform-icon {
    display: flex;
    width: 24px;
    height: 24px;
  }

  .szl-platform-name {
    font-size: 0.5625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  .szl-upload-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 10rem;
    border: 2px dashed var(--border-color);
    border-radius: 2.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    overflow: hidden;
  }

  .szl-upload-zone:hover {
    background: var(--bg-page);
    border-color: rgba(99, 102, 241, 0.4);
  }

  .szl-upload-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }

  .szl-upload-icon {
    color: var(--text-muted);
    opacity: 0.5;
    transition: all 0.2s ease;
  }

  .szl-upload-zone:hover .szl-upload-icon {
    opacity: 1;
    color: #6366f1;
    transform: scale(1.1);
  }

  .szl-upload-text {
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 0;
  }

  .szl-file-hidden {
    display: none;
  }

  .szl-opacity-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .szl-opacity-val {
    font-size: 0.75rem;
    font-weight: 700;
    color: #6366f1;
  }

  .szl-slider {
    width: 100%;
    height: 6px;
    border-radius: 999px;
    appearance: none;
    background: var(--border-color);
    cursor: pointer;
    accent-color: #6366f1;
    outline: none;
  }

  .szl-slider::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    background: #6366f1;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid var(--bg-surface);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
  }

  .szl-toggles {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .szl-toggle-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 1rem;
    background: var(--bg-page);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: border-color 0.2s ease;
  }

  .szl-toggle-item:hover {
    border-color: rgba(99, 102, 241, 0.3);
  }

  .szl-checkbox {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    accent-color: #6366f1;
    cursor: pointer;
  }

  .szl-toggle-label {
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
  }

  .szl-toggle-item:hover .szl-toggle-label {
    color: #6366f1;
  }

  .szl-reset-btn {
    width: 100%;
    padding: 1rem;
    border-radius: 2rem;
    background: var(--bg-page);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.6875rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
  }

  .szl-reset-btn:hover {
    color: #f43f5e;
    border-color: rgba(244, 63, 94, 0.3);
  }

  .szl-preview-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 700px;
    background: var(--bg-page);
    border-radius: 4rem;
    padding: 2.5rem;
    border: 1px solid var(--border-color);
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.05);
  }

  .szl-radial-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(99, 102, 241, 0.06) 0%, transparent 60%);
    pointer-events: none;
  }

  .szl-phone {
    position: relative;
    background: black;
    border-radius: 3.5rem;
    box-shadow: 0 0 100px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    aspect-ratio: 9 / 16;
    height: 78vh;
    max-height: 850px;
    border: 12px solid #0f172a;
    outline: 1px solid rgba(255, 255, 255, 0.05);
  }

  .szl-statusbar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2rem;
    display: flex;
    justify-content: space-between;
    padding: 0 2rem;
    align-items: center;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.4), transparent);
    z-index: 60;
    pointer-events: none;
    color: white;
    font-size: 0.625rem;
    font-weight: 500;
    box-sizing: border-box;
  }

  .szl-notch {
    width: 6rem;
    height: 1.5rem;
    background: black;
    border-radius: 0 0 1.5rem 1.5rem;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
  }

  .szl-statusbar-icons {
    display: flex;
    gap: 6px;
    align-items: center;
  }

  .szl-media-wrapper {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 2.5rem;
  }

  .szl-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-muted);
    text-align: center;
    opacity: 0.4;
    transition: opacity 0.2s ease;
  }

  .szl-phone:hover .szl-empty-state {
    opacity: 1;
  }

  .szl-empty-text {
    font-size: 0.625rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    margin: 0 0 0.5rem;
  }

  .szl-empty-link {
    font-size: 0.5625rem;
    margin: 0;
    opacity: 0.5;
    text-decoration: underline;
    cursor: pointer;
    transition: color 0.2s ease;
  }

  .szl-empty-link:hover {
    color: #6366f1;
    opacity: 1;
  }

  .szl-media {
    position: absolute;
    inset: 0;
  }

  .szl-hidden {
    display: none;
  }

  .szl-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 50;
    transition: opacity 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
  }

  .szl-mask {
    position: absolute;
    inset: 0;
    z-index: 40;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    transition: opacity 0.5s ease;
  }

  .szl-mask-top {
    height: 15%;
    background: rgba(0, 0, 0, 0.6);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
  }

  .szl-mask-flex {
    flex: 1;
  }

  .szl-mask-bottom {
    height: 25%;
    background: rgba(0, 0, 0, 0.6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
  }

  .szl-mask-right {
    position: absolute;
    right: 0;
    top: 20%;
    bottom: 20%;
    width: 18%;
    background: rgba(0, 0, 0, 0.6);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
  }

  .szl-mask-hidden {
    opacity: 0;
    pointer-events: none;
  }

  .szl-grid-overlay {
    position: absolute;
    inset: 0;
    z-index: 45;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .szl-grid-hidden {
    opacity: 0;
  }

  .szl-grid-inner {
    width: 100%;
    height: 100%;
    position: relative;
    border-left: 2px solid rgba(255, 255, 255, 0.1);
    border-right: 2px solid rgba(255, 255, 255, 0.1);
  }

  .szl-grid-h,
  .szl-grid-v {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
  }

  .szl-grid-h {
    left: 0;
    width: 100%;
    height: 2px;
  }

  .szl-grid-v {
    top: 0;
    height: 100%;
    width: 2px;
  }

  .szl-grid-h1 { top: 33.33%; }
  .szl-grid-h2 { top: 66.66%; }
  .szl-grid-v1 { left: 33.33%; }
  .szl-grid-v2 { left: 66.66%; }

  .szl-banner {
    margin-top: 2rem;
    padding: 0.5rem 1.5rem;
    border-radius: 999px;
    background: black;
    color: white;
    font-size: 0.625rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    outline: 1px solid rgba(255, 255, 255, 0.1);
  }

  @keyframes szl-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
  }