/* --- Solution card grid (3 columns on large, 2 on tablet, 1 on mobile) --- */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin: 40px 0;
        }

        .solution-card {
            background: var(--card-bg);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-radius: 32px;
            padding: 36px 28px;
            border: 1px solid var(--border-soft);
            transition: transform 0.2s, background 0.3s, box-shadow 0.3s;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }
        .solution-card:hover {
            transform: translateY(-8px);
            background: rgba(255, 238, 220, 0.9);
            border-color: var(--primary-warm);
            box-shadow: var(--shadow-light);
        }
        .solution-card i {
            font-size: 2.8rem;
            color: var(--primary-warm);
            margin-bottom: 24px;
        }
        .solution-card h3 {
            font-size: 1.7rem;
            font-weight: 600;
            margin-bottom: 18px;
            color: var(--text-dark);
        }
        .solution-description {
            color: var(--text-soft);
            margin-bottom: 24px;
            font-size: 1rem;
            line-height: 1.5;
            flex-grow: 1;
        }
        .problem-solved {
            background: rgba(249, 115, 22, 0.05);
            border-left: 4px solid var(--primary-warm);
            padding: 16px 18px;
            border-radius: 16px;
            margin-bottom: 25px;
            font-size: 0.95rem;
            color: var(--text-dark);
        }
        .problem-solved i {
            font-size: 1.1rem;
            margin-right: 8px;
            color: var(--primary-warm);
            vertical-align: middle;
        }
        .problem-solved strong {
            color: var(--primary-warm);
            font-weight: 600;
        }
        .feature-list {
            list-style: none;
            margin: 0 0 28px 0;
            padding: 0;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            color: var(--text-soft);
            font-size: 0.95rem;
        }
        .feature-list li i {
            font-size: 0.9rem;
            color: var(--primary-warm);
            margin-top: 4px;
            min-width: 18px;
        }
        .solution-tag {
            display: inline-block;
            background: rgba(249,115,22,0.1);
            color: var(--primary-warm);
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 40px;
            font-size: 0.95rem;
            border: 1px solid var(--border-soft);
            align-self: flex-start;
            margin-top: 8px;
        }

        /* --- Differentiators strip (复用首页优势网格，但只显示一行) --- */
        .differentiators {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
            margin: 60px 0 20px;
        }
        .diff-item {
            text-align: center;
            padding: 25px 15px;
            background: rgba(255, 247, 238, 0.6);
            backdrop-filter: blur(4px);
            border-radius: 30px;
            border: 1px solid var(--border-soft);
        }
        .diff-item i {
            font-size: 2.2rem;
            color: var(--primary-warm);
            margin-bottom: 15px;
        }
        .diff-item h4 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .diff-item p {
            font-size: 0.9rem;
            color: var(--text-soft);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .solutions-grid { grid-template-columns: repeat(2, 1fr); }
            .differentiators { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .solutions-grid { grid-template-columns: 1fr; }
            .differentiators { grid-template-columns: 1fr; }
        }