/* --- 1. 复用全局样式 --- */
        :root {
            /* 核心渐变 */
            --gradient-main: linear-gradient(135deg, #8b5cf6 0%, #ec4899 50%, #f59e0b 100%);
            --gradient-hover: linear-gradient(135deg, #7c3aed 0%, #db2777 50%, #d97706 100%);
            --gradient-text: linear-gradient(45deg, #6d28d9, #db2777);
            
            --primary: #8b5cf6;
            --accent: #ec4899;
            --text-main: #111827;
            --text-sub: #4b5563;
            --bg-light: #f9fafb;
            --white: #ffffff;
            --nav-height: 80px;
        }

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

        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.7;
            padding-top: var(--nav-height);
            /* 背景纹理 */
            background-image: radial-gradient(circle at 10% 10%, rgba(236, 72, 153, 0.05) 0%, transparent 40%),
                              radial-gradient(circle at 90% 90%, rgba(139, 92, 246, 0.05) 0%, transparent 40%);
            background-attachment: fixed;
        }

        a { text-decoration: none; color: inherit; transition: 0.3s; }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

        /* --- 导航栏 --- */
        header {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
            position: fixed;
            top: 0; width: 100%; z-index: 1000;
            height: var(--nav-height);
            border-bottom: 1px solid rgba(255,255,255,0.5);
        }

        nav { display: flex; justify-content: space-between; align-items: center; height: 100%; }
        nav > * { display: flex; align-items: center; }

        .logo { font-size: 1.6rem; font-weight: 900; display: flex; align-items: center; gap: 10px; letter-spacing: -0.5px; }
        .logo i { color: #8b5cf6; }

        .nav-links { display: flex; gap: 40px; align-items: center; }
        .nav-links li a { font-weight: 600; color: var(--text-main); position: relative; font-size: 1rem; }
        .nav-links li a:hover { color: var(--accent); }

        .btn {
            display: inline-block; padding: 12px 35px; border-radius: 50px;
            font-weight: 700; letter-spacing: 1px; cursor: pointer;
            transition: all 0.3s; border: none; position: relative; overflow: hidden; z-index: 1;
        }
        .btn-primary {
            background: var(--gradient-main); color: var(--white);
            box-shadow: 0 10px 25px -5px rgba(236, 72, 153, 0.4);
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 15px 35px -5px rgba(139, 92, 246, 0.5); }
        .btn-outline {
            background: white; color: var(--text-main); border: 1px solid #e5e7eb;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); }

        /* --- 2. 详情页特有样式 --- */
        
        /* Banner 区域：替换为现代/工业风咖啡图片 */
        .case-header {
            position: relative;
            padding: 160px 0 140px;
            text-align: center;
            background-image: url('images/site/case_coffee-01.jpg');
            background-size: cover;
            background-position: center;
            border-radius: 0 0 50px 50px;
            color: white;
            margin-bottom: 80px;
            overflow: hidden;
        }
        .case-header::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
            /* 黑色+深蓝蒙版，营造科技/未来感 */
            background: linear-gradient(180deg, rgba(0,0,0,0.5) 0%, rgba(17, 24, 39, 0.9) 100%);
        }
        .case-header .container { position: relative; z-index: 2; }
        .case-badge {
            display: inline-block; padding: 8px 18px; background: rgba(255,255,255,0.1);
            backdrop-filter: blur(8px); border-radius: 30px; border: 1px solid rgba(255,255,255,0.3);
            margin-bottom: 25px; font-size: 0.85rem; letter-spacing: 2px; text-transform: uppercase; font-weight: 700;
        }
        .case-header h1 { font-size: 3.8rem; margin-bottom: 20px; font-weight: 900; text-shadow: 0 10px 20px rgba(0,0,0,0.5); }
        .case-header p { font-size: 1.3rem; opacity: 0.95; max-width: 700px; margin: 0 auto; font-weight: 300; }

        /* 项目概况栏 (Glassmorphism) */
        .project-meta-bar {
            display: grid; 
            grid-template-columns: repeat(4, 1fr); 
            gap: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 20px;
            /* 装饰条改为深紫色/电光蓝 */
            border-top: 4px solid #6d28d9; 
            box-shadow: 0 25px 50px -12px rgba(0,0,0,0.1); 
            margin-top: -100px; 
            position: relative; z-index: 10; padding: 40px 10px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .project-meta-bar:hover { transform: translateY(-5px); box-shadow: 0 35px 60px -12px rgba(109, 40, 217, 0.2); }

        .meta-item { text-align: center; position: relative; padding: 0 20px; }
        .meta-item:not(:last-child)::after {
            content: ''; position: absolute; right: 0; top: 10%; height: 80%; width: 1px;
            background: linear-gradient(to bottom, transparent, #e5e7eb, transparent);
        }
        .meta-icon {
            font-size: 1.8rem; margin-bottom: 15px; display: inline-block;
            background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }
        .meta-item h5 { color: var(--text-sub); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 5px; font-weight: 600; }
        .meta-item p { color: var(--text-main); font-size: 1.1rem; font-weight: 800; }

        /* 内容区块 */
        .content-block { margin-bottom: 80px; display: flex; gap: 60px; align-items: flex-start; padding-top: 40px; }
        .content-sticky { flex: 0 0 300px; position: sticky; top: 120px; }
        .content-sticky h2 { 
            font-size: 2.2rem; margin-bottom: 20px; font-weight: 800; line-height: 1.1;
            background: var(--gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }
        .content-body { flex: 1; }
        .content-body p { margin-bottom: 25px; font-size: 1.1rem; color: #4b5563; text-align: justify; line-height: 1.8; }
        
        /* 颜色提取展示 (Future Theme) */
        .color-palette { display: flex; gap: 0; border-radius: 16px; overflow: hidden; height: 80px; margin: 40px 0; box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
        .color-swatch { flex: 1; display: flex; align-items: center; justify-content: center; color: white; font-size: 0.8rem; font-weight: 600; text-transform: uppercase; transition: flex 0.3s; }
        .color-swatch:hover { flex: 1.5; }

        /* 图片展示网格 */
        .gallery-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; margin-bottom: 30px; }
        .gallery-item { border-radius: 24px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.05); transition: 0.3s; position: relative; }
        .gallery-item:hover { transform: translateY(-5px); box-shadow: 0 20px 50px rgba(139, 92, 246, 0.15); }
        .gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
        .gallery-item:hover img { transform: scale(1.05); }
        .gallery-full { grid-column: span 2; height: 500px; }

        /* 底部导航 */
        .case-nav { display: flex; justify-content: space-between; margin-top: 100px; padding-top: 50px; border-top: 1px solid #e5e7eb; }

        /* Footer */
        footer { background: #0f172a; color: white; padding: 60px 0 40px; margin-top: 80px; position: relative; }
        footer::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 6px; background: var(--gradient-main); }
        .footer-container { text-align: center; }
        .footer-logo { font-size: 1.5rem; font-weight: 800; margin-bottom: 20px; display: inline-block; background: var(--gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .copyright { color: rgba(255,255,255,0.4); font-size: 0.85rem; margin-top: 20px; }
        .social-links { display: flex; justify-content: center; gap: 25px; margin-bottom: 30px; }
        .social-links a { color: rgba(255,255,255,0.6); font-size: 1.4rem; transition: 0.3s; }
        .social-links a:hover { color: var(--primary); transform: translateY(-3px); }

        /* 移动端适配 */
        @media (max-width: 768px) {
            .case-header h1 { font-size: 2.5rem; }
            .project-meta-bar { grid-template-columns: 1fr 1fr; gap: 30px; margin-top: -50px; padding: 30px 20px; }
            .meta-item:not(:last-child)::after { display: none; }
            .content-block { flex-direction: column; gap: 30px; }
            .content-sticky { position: relative; top: 0; flex: auto; }
            .gallery-grid { grid-template-columns: 1fr; }
            .gallery-full { height: 250px; grid-column: auto; }
            .nav-links { display: none; }
            .case-nav { flex-direction: column; gap: 20px; align-items: center; }
            .case-nav .btn { width: 100%; text-align: center; }
        }