:root {
            --idji-primary: #FF6600;
            --idji-primary-hover: #e65c00;
            --idji-dark: #1D1D1F;
            --idji-text: #333333;
            --idji-text-light: #666666;
            --idji-bg-light: #F5F5F7;
            --idji-white: #FFFFFF;
            --idji-radius: 16px;
            --idji-transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            --idji-max-width: 1300px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--idji-text);
            background-color: var(--idji-white);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 导航栏 */
        .idji-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: var(--idji-transition);
        }

        .idji-nav-container {
            max-width: var(--idji-max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .idji-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .idji-logo img {
            height: 32px;
            width: auto;
        }

        .idji-nav-links {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .idji-nav-links a {
            text-decoration: none;
            color: var(--idji-dark);
            font-size: 15px;
            font-weight: 500;
            transition: var(--idji-transition);
            word-break: keep-all;
        }

        .idji-nav-links a:hover {
            color: var(--idji-primary);
        }

        /* Hero下载区 */
        .idji-hero-section {
            padding-top: 140px;
            padding-bottom: 80px;
            background: radial-gradient(circle at top right, rgba(255, 102, 0, 0.05), transparent),
                        radial-gradient(circle at bottom left, rgba(255, 102, 0, 0.03), transparent);
            text-align: center;
        }

        .idji-hero-content {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
            word-break: break-word;
        }

        .idji-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            font-weight: 700;
            line-height: 1.1;
            margin-bottom: 24px;
            color: var(--idji-dark);
            white-space: normal;
        }

        .idji-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.5rem);
            color: var(--idji-text-light);
            margin-bottom: 48px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 核心下载卡片布局 */
        .idji-download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
            gap: 32px;
            max-width: var(--idji-max-width);
            margin: 0 auto;
            padding: 0 24px 96px;
        }

        .idji-download-card {
            background: var(--idji-white);
            border-radius: var(--idji-radius);
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: var(--idji-transition);
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(0,0,0,0.03);
            min-width: 0;
        }

        .idji-download-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }

        .idji-card-image {
            width: 100%;
            height: 240px;
            overflow: hidden;
        }

        .idji-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--idji-transition);
        }

        .idji-download-card:hover .idji-card-image img {
            transform: scale(1.05);
        }

        .idji-card-body {
            padding: 32px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            word-break: break-word;
        }

        .idji-card-tag {
            display: inline-block;
            background: rgba(255, 102, 0, 0.1);
            color: var(--idji-primary);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 16px;
            width: fit-content;
        }

        .idji-card-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .idji-card-desc {
            color: var(--idji-text-light);
            font-size: 15px;
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .idji-btn-download {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--idji-primary);
            color: var(--idji-white);
            text-decoration: none;
            padding: 14px 28px;
            border-radius: 12px;
            font-weight: 600;
            transition: var(--idji-transition);
            gap: 8px;
        }

        .idji-btn-download:hover {
            background: var(--idji-primary-hover);
            box-shadow: 0 8px 20px rgba(255, 102, 0, 0.3);
        }

        .idji-btn-secondary {
            background: transparent;
            color: var(--idji-text);
            border: 1px solid #ddd;
            margin-top: 12px;
        }

        .idji-btn-secondary:hover {
            background: #f8f8f8;
            border-color: #bbb;
        }

        /* 动态内容区块 */
        .idji-dynamic-section {
            background-color: var(--idji-bg-light);
            padding: 96px 24px;
        }

        .idji-section-header {
            max-width: var(--idji-max-width);
            margin: 0 auto 64px;
            text-align: center;
        }

        .idji-section-title {
            font-size: clamp(2rem, 3vw, 2.5rem);
            font-weight: 700;
            margin-bottom: 16px;
        }

        /* 列表容器 */
        .idji-article-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
            max-width: var(--idji-max-width);
            margin: 0 auto;
        }

        .idji-article-item {
            background: var(--idji-white);
            padding: 24px;
            border-radius: 12px;
            transition: var(--idji-transition);
            border-left: 4px solid transparent;
        }

        .idji-article-item:hover {
            border-left-color: var(--idji-primary);
            transform: translateX(5px);
        }

        .idji-article-date {
            font-size: 13px;
            color: var(--idji-text-light);
            margin-bottom: 8px;
        }

        .idji-article-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--idji-dark);
            text-decoration: none;
            display: block;
        }

        /* 页脚 */
        .idji-footer {
            background: var(--idji-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 80px 24px 40px;
        }

        .idji-footer-inner {
            max-width: var(--idji-max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            justify-content: space-between;
        }

        .idji-footer-brand {
            flex: 1;
            min-width: 280px;
        }

        .idji-footer-brand-name {
            font-size: 24px;
            font-weight: 700;
            color: var(--idji-white);
            margin-bottom: 20px;
        }

        .idji-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            flex: 2;
            min-width: 0;
        }

        .idji-footer-group {
            min-width: 140px;
        }

        .idji-footer-group h4 {
            color: var(--idji-white);
            font-size: 16px;
            margin-bottom: 24px;
        }

        .idji-footer-group ul {
            list-style: none;
        }

        .idji-footer-group ul li {
            margin-bottom: 12px;
        }

        .idji-footer-group a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
            transition: var(--idji-transition);
            font-size: 14px;
        }

        .idji-footer-group a:hover {
            color: var(--idji-primary);
        }

        .idji-footer-bottom {
            max-width: var(--idji-max-width);
            margin: 64px auto 0;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 13px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .idji-nav-links {
                display: none; /* 简化移动端，实际可添加汉堡菜单 */
            }
            .idji-download-grid {
                grid-template-columns: 1fr;
            }
            .idji-hero-title {
                font-size: 2.2rem;
            }
            .idji-footer-links {
                gap: 32px;
            }
        }