/*reset*/

/* 头部导航 (移动优先 汉堡菜单简单版) */
        .navbar {
            background-color: #ffffff;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(2px);
            background: rgba(255,255,255,0.96);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 20px;
            max-width: 600px;
            margin: 0 auto;
        }

        .logo {
            font-size: 1.6rem;
            font-weight: 700;
            background: linear-gradient(135deg, #2563eb, #7c3aed);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            letter-spacing: -0.3px;
        }

        .nav-toggle {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            width: 28px;
            height: 22px;
            cursor: pointer;
        }

        .nav-toggle span {
            width: 100%;
            height: 2.5px;
            background-color: #334155;
            border-radius: 4px;
            transition: 0.2s;
        }

        .nav-menu {
            position: fixed;
            top: 60px;
            left: -115%;
            width: 100%;
            /*max-width: 280px;            */
            background-color: white;
            box-shadow: 4px 0 20px rgba(0,0,0,0.08);
            transition: left 0.3s ease;
            z-index: 99;
            padding: 24px 20px;
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .nav-menu.active {
            left: 0;
        }

        .nav-menu li a {
            text-decoration: none;
            font-size: 1.2rem;
            font-weight: 500;
            color: #1e293b;
            display: block;
            padding: 10px 0;
            border-bottom: 1px solid #eef2ff;
        }

        .nav-menu li a:hover {
            color: #2563eb;
        }

        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.3);
            backdrop-filter: blur(2px);
            z-index: 98;
            visibility: hidden;
            opacity: 0;
            transition: 0.2s;
        }

        .overlay.active {
            visibility: visible;
            opacity: 1;
        }


        /* 英雄区 */
        .hero {
            padding: 48px 0 56px;
            text-align: center;
            background: linear-gradient(145deg, #ffffff 0%, #dfe8f0 100%);
        }

        .hero-tag {
            display: inline-block;
            background: #e0e7ff;
            color: #1e40af;
            border-radius: 40px;
            padding: 6px 16px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
        }

        .hero p {
            font-size: 14px;
            color: #334155;
            /*max-width: 480px;*/
            margin: 0 auto 28px auto;
            line-height: 26px;
        }

        .btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-block;
            padding: 12px 26px;
            border-radius: 40px;
            font-weight: 600;
            text-decoration: none;
            transition: 0.2s;
            font-size: 0.95rem;
        }

        .btn-primary {
            background: #2563eb;
            color: white;
            box-shadow: 0 4px 8px rgba(37,99,235,0.2);
        }

        .btn-primary:hover {
            background: #1d4ed8;
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            border: 1.5px solid #2563eb;
            color: #2563eb;
        }

        .btn-outline:hover {
            background: #eff6ff;
        }


        .section-subhead {
            text-align: center;
            color: #475569;
            max-width: 520px;
            margin: 0 auto 40px auto;
            font-size: 1rem;
        }




        /* 特性网格 2列 */
        .features-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px 18px;
            margin-top: 20px;
        }

        .feature-card {
            background: white;
            padding: 20px 14px;
            border-radius: 28px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.02), 0 2px 6px rgba(0,0,0,0.03);
            transition: all 0.2s ease;
            border: 1px solid #eef2ff;
            text-align: center;
        }

        .feature-icon {
            font-size: 2.4rem;
            margin-bottom: 12px;
        }

        .feature-icon i{
            color: #475569;
        }

        .feature-card h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 0.85rem;
            color: #475569;
            line-height: 1.4;
        }


        /* 解决方案卡片 竖向列表 */
        .solutions-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .solution-item {
            background: white;
            border-radius: 32px;
            padding: 24px 20px;
            box-shadow: 0 6px 14px rgba(0,0,0,0.02);
            border: 1px solid #eef2ff;
            transition: all 0.2s;
        }

        .solution-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: space-between;
        }

        .solution-en {
            font-size: 0.8rem;
            font-weight: normal;
            background: #f1f5f9;
            padding: 4px 10px;
            border-radius: 30px;
            color: #2c3e66;
        }

        .solution-desc {
            color: #475569;
            margin: 12px 0 16px 0;
            font-size: 0.9rem;
        }

        .solution-features {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 12px;
        }

        .solution-features li {
            background: #f8fafc;
            padding: 5px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 500;
            color: #1e40af;
        }

        /* 项目卡片 */
        .projects-grid {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .project-card {
            background: white;
            border-radius: 28px;
            overflow: hidden;
            box-shadow: 0 12px 24px -12px rgba(0,0,0,0.1);
            border: 1px solid #eef2ff;
        }

        .project-img-placeholder {
            background: linear-gradient(135deg, #cbd5e1, #e2e8f0);
            height: 180px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: #475569;
        }

        .project-img-placeholder img{
        	width: 100%;
        }
        .project-info {
            padding: 20px 18px 24px;
        }

        .project-info h3 {
            margin-bottom: 8px;
        }

        .project-info p {
            color: #475569;
            font-size: 0.9rem;
        }

        /* CTA区域 */
        .cta {
            text-align: center;
            background: linear-gradient(180deg, #ddebf8, #ffffff);
            border-radius: 48px;
            margin: 24px 0 32px;
            padding: 48px 24px;
        }

        .cta h2 {
            font-size: 1.8rem;
        }

        .cta p {
            margin-bottom: 28px;
            color: #334155;
        }

        .cta i {
            font-size: 20px;
        }