:root {
        --bg: #fbfbfb;
        --card: #ffffff;
        --text: #111111;
        --muted: #6b7280;
        --border: #111111;
        --font-ui: "Manrope", "Segoe UI", Roboto, Arial, sans-serif;
      }
      body.darkMode {
        --bg: #0a111f;
        --card: #121a2b;
        --text: #eef4ff;
        --muted: #a8b5cc;
        --border: #3a4c68;
      }
      * {
        box-sizing: border-box;
      }
      html,
      body {
        height: auto;
        min-height: 100%;
        overflow-y: auto;
        overflow-x: hidden;
      }
      body {
        margin: 0;
        background: var(--bg);
        color: var(--text);
        font-family: var(--font-ui);
      }
      .page {
        max-width: 1080px;
        margin: 0 auto;
        min-height: 100%;
        padding: 22px 16px 16px;
        position: relative;
        height: auto !important;
        display: block !important;
      }
      .themeSwitchWrap {
        position: fixed;
        top: 18px;
        right: 20px;
        z-index: 40;
      }
      .themeSwitchBtn {
        width: 44px;
        height: 44px;
        border-radius: 999px;
        border: 2px solid var(--border);
        background: var(--card);
        color: var(--text);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
      }
      .topBar {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        gap: 12px;
        margin-bottom: 14px;
      }
      .topBarLeft {
        display: flex;
        align-items: flex-start;
        gap: 10px;
      }
      .title {
        margin: 0;
        font-size: 44px;
        line-height: 1.05;
      }
      .sub {
        margin: 6px 0 0;
        color: var(--muted);
      }
      .panel {
        border: 2px solid var(--border);
        border-radius: 14px;
        background: var(--card);
        padding: 14px;
        overflow: visible !important;
        flex: none !important;
        min-height: auto !important;
        display: block !important;
      }
      .guideCard {
        border: 2px solid var(--border);
        border-radius: 14px;
        background: var(--card);
        padding: 16px;
        margin-bottom: 12px;
      }
      .guideCard h3 {
        margin: 0 0 8px;
        font-size: 18px;
      }
      .guideCard p,
      .guideCard li {
        color: var(--muted);
      }
      .guideCard code {
        background: rgba(59, 130, 246, 0.12);
        color: var(--text);
        padding: 2px 6px;
        border-radius: 6px;
      }
      .guideCard ul,
      .guideCard ol {
        margin: 8px 0 0;
        padding-left: 20px;
      }
      .guideNote {
        border: 2px dashed var(--border);
        border-radius: 12px;
        padding: 10px 12px;
        margin-top: 10px;
        color: var(--text);
      }
      .imgPlaceholder {
        margin-top: 12px;
        border: 2px dashed var(--border);
        border-radius: 12px;
        padding: 12px;
        color: var(--muted);
        font-weight: 700;
        text-align: center;
        background: rgba(59, 130, 246, 0.06);
        min-height: 220px;
        display: flex;
        align-items: center;
        justify-content: center;
        overflow: hidden;
      }
      .imgPlaceholder.multi {
        display: grid;
        grid-template-columns: 1fr;
        gap: 10px;
        align-items: start;
        justify-items: stretch;
      }
      .imgPlaceholder img {
        width: 100%;
        height: auto;
        max-height: none;
        object-fit: contain;
        border-radius: 8px;
        display: block;
        border: 1px solid rgba(17, 17, 17, 0.12);
      }
      .imgPlaceholder.multi img {
        min-height: 0;
        max-height: none;
      }
      .imgPlaceholder:not(:has(img)) {
        padding: 18px 14px;
      }
      @media (max-width: 768px) {
        .title {
          font-size: 30px;
        }
        .imgPlaceholder {
          min-height: 160px;
        }
        .imgPlaceholder img {
          max-height: none;
        }
        .imgPlaceholder.multi img {
          min-height: 0;
          max-height: none;
        }
      }