/* ---------- 同色圆点 + 悬停下划线 ---------- */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            background: #000000;          /* 纯黑页面背景 */
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            color: #1e2f3d;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ----- 深黑色页眉 (纯黑背景 + 白字 + 居中) ----- */
        .header {
            background: #171717;           /* 深黑背景（视觉上与纯黑协调） */
            padding: 16px 24px;
            font-size: 1.9rem;
            font-weight: 550;
            color: #ffffff;                /* 字体白色 */
            text-align: center;             /* 居中 */
            flex-shrink: 0;
        }

        /* ----- 主要卡片区域 白底，左右与黑色背景保留12px间隙 ----- */
        .content {
            max-width: 960px;
            margin: 24px auto;              /* 上下24px 左右auto 自然与黑色背景产生间隙 */
            background: white;              /* 中间背景纯白不动 */
            border-radius: 10px;
            padding: 28px 30px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
            width: calc(100% - 24px);       /* 左右各12px间隙 (总减24px) 小窗口时白色与黑色不贴边 */
            flex: 1 0 auto;
        }

        /* 针对不同窄窗口保持12px间隙 (甚至更小窗口也不低于12px) */
        @media (max-width: 600px) {
            .content {
                margin: 20px auto;           /* 上下间隙依然保留 */
                width: calc(100% - 24px);     /* 维持左右各12px，符合要求 */
                padding: 20px;                /* 内部舒适 */
            }
        }

        /* 极窄窗口依然保证左右12px (不做进一步缩减) */
        @media (max-width: 480px) {
            .content {
                margin: 16px auto;
                width: calc(100% - 24px);      /* 左右各12px 坚决不缩小间隙 */
                padding: 18px;
            }
        }
        
        /* 即使小于360px，仍然保持左右12px间隙 (不减少) */
        @media (max-width: 360px) {
            .content {
                margin: 12px auto;
                width: calc(100% - 24px);      /* 固定左右各12px间隙 */
                padding: 15px;
            }
        }

        .title-bar {
            font-size: 1.5rem;
            padding-bottom: 12px;
            border-bottom: 1px solid #dee9f2;
            margin-bottom: 24px;
        }

        /* 密码条 — 灰底，右侧放置“更多问题” */
        .password-notice {
            background: #f2f7fd;
            padding: 14px 22px;
            border-left: 4px solid #7aa5c7;
            margin-bottom: 30px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
            justify-content: space-between;
        }
        .password-left {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
        }
        .password-label {
            background: #7aa5c7;
            color: white;
            padding: 4px 16px;
            border-radius: 30px;
        }
        .password-value {
            font-weight: 600;
            color: #1e5b8a;
        }

        /* 更多问题 — 去掉圆点（只保留链接，不加伪元素） */
        .more-issues {
            display: flex;
            align-items: center;
            white-space: nowrap;
        }
        .more-issues::before {
            display: none;
        }
        
        .issues-link {
            display: inline-block;
            padding: 8px 0;
            color: #0066cc;
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 500;
            background: transparent;
            border: none;
            outline: none;
            box-shadow: none;
            line-height: 1.4;
            position: relative;
        }
        .issues-link:visited {
            color: #551a8b;
        }
        .issues-link:hover {
            text-decoration: underline;
            color: #551a8b;
        }
        .issues-link:visited:hover {
            color: #551a8b;
        }
        
        /* ===== 版本区域 ===== */
        .version-section {
            margin: 30px 0 20px 0;
        }
        
        .section-divider {
            height: 1px;
            background: #cbdae9;
            margin: 20px 0 15px 0;
        }
        
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px 20px;
            margin-bottom: 15px;
        }
        
        .version-title {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .version-title h3 {
            font-size: 1.9rem;
            font-weight: 450;
        }
        
        /* 视频按钮 */
        .install-video-btn {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 26px;
            border: 1px solid #7aa5c7;
            border-radius: 40px;
            background: white;
            color: #1b5380;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.2s ease;
            box-shadow: 0 2px 4px rgba(0,0,0,0.02);
            cursor: pointer;
        }
        .install-video-btn:hover {
            background: #e6f0fe;
            border-color: #2b6a9e;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(43, 106, 158, 0.15);
        }
        .play-icon {
            width: 0; height: 0;
            border-style: solid;
            border-width: 5px 0 5px 9px;
            border-color: transparent transparent transparent #28638b;
            transition: transform 0.2s;
        }
        .install-video-btn:hover .play-icon {
            transform: scale(1.2);
        }
        
        /* 网盘链接区域 — 完全保留原有样式 (带同色圆点) */
        .disk-item {
            margin: 0;
            padding: 0;
            border: none;
            background: transparent;
        }
        
        .disk-links {
            background: transparent;
            border: none;
            padding: 0;
            margin: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        /* 红色圆点 (同色圆点) 完全保留 */
        .disk-links::before {
            content: "";
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: #a10328;
            border-radius: 50%;
            flex-shrink: 0;
            margin-left: 4px;
            transition: background-color 0.2s ease;
        }
        
        .baidu-link {
            display: inline-block;
            padding: 8px 0;
            color: #551a8b;
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 500;
            background: transparent;
            border: none;
            outline: none;
            box-shadow: none;
            line-height: 1.4;
            flex: 0 1 auto;
        }
        
        .baidu-link:visited {
            color: #551a8b;
        }
        
        .baidu-link:hover {
            text-decoration: underline;
            color: #551a8b;
        }
        
        .baidu-link:visited:hover {
            color: #551a8b;
            text-decoration: underline;
        }
        
        .disk-item + .disk-item {
            margin-top: 6px;
        }
        
        /* ----- 深黑色页脚 (纯黑背景 + 白字 + 居中) 普通流配合flex ----- */
        .footer {
            background: #171717;            /* 深黑背景 */
            text-align: center;              /* 居中 */
            padding: 16px;
            font-size: 0.8rem;
            color: #d2d2d2;                 /* 浅灰色字体柔和 */
            flex-shrink: 0;
            width: 100%;
            margin-top: auto;                 /* 在flex列中推到底部 */
        }