/* 滚动淡入动画 */
        .fade-on-scroll {
            opacity: 0;
            transform: translateY(35px);
            transition: opacity 0.9s cubic-bezier(0.23, 1, 0.32, 1), transform 0.9s cubic-bezier(0.23, 1, 0.32, 1);
        }
        .fade-on-scroll.visible {
            opacity: 1;
            transform: translateY(0);
        }
        /* 页面主视觉 */
        .about-hero {
            margin-top: 80px;
            height: 45vh;
            min-height: 350px;
            background: linear-gradient(115deg, #e5d8c4, #f3e7d5);
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--gold-light);
        }
        .about-hero::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(179,139,74,0.15) 0%, transparent 70%);
            top: -100px;
            right: -100px;
            border-radius: 50%;
        }
        .about-hero::after {
            content: '';
            position: absolute;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(179,139,74,0.1) 0%, transparent 70%);
            bottom: -80px;
            left: -80px;
            border-radius: 50%;
        }
        .hero-content h1 {
            font-size: 4rem;
            font-weight: 700;
            color: var(--text-dark);
            text-shadow: 0 2px 10px rgba(255,255,255,0.5);
            margin-bottom: 1rem;
            position: relative;
            z-index: 2;
        }
        .hero-content p {
            font-size: 1.3rem;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }
        /* 公司简介卡片 */
        .about-intro {
            background: var(--warm-surface);
            border-radius: 60px;
            padding: 50px 50px;
            box-shadow: var(--shadow-warm);
            margin: -50px auto 60px;
            position: relative;
            z-index: 5;
            border: 1px solid rgba(179,139,74,0.2);
        }
        .intro-text {
            font-size: 1.1rem;
            color: var(--text-muted);
            column-count: 2;
            column-gap: 40px;
            text-align: justify;
        }
        .intro-text p {
            margin-bottom: 1.2rem;
        }
        @media (max-width: 768px) {
            .intro-text { column-count: 1; }
        }
        /* 里程碑时间轴 */
        .timeline {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            margin: 60px 0;
            position: relative;
        }
        .timeline::before {
            content: '';
            position: absolute;
            top: 30px;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--gold), var(--gold-light), var(--gold), transparent);
            z-index: 1;
        }
        .milestone {
            flex: 1 1 180px;
            text-align: center;
            background: var(--warm-surface);
            border-radius: 40px;
            padding: 30px 15px 20px;
            margin: 0 10px 20px;
            box-shadow: var(--shadow-warm);
            border: 1px solid rgba(179,139,74,0.2);
            position: relative;
            z-index: 2;
            transition: var(--transition-smooth);
        }
        .milestone:hover {
            transform: translateY(-15px);
            border-color: var(--gold);
            box-shadow: 0 30px 50px -15px rgba(179,139,74,0.4);
        }
        .milestone .year {
            font-size: 2rem;
            font-weight: 700;
            color: var(--gold);
            margin-bottom: 10px;
        }
        .milestone .title {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-dark);
        }
        .milestone .desc {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-top: 8px;
        }
        /* 集团架构卡片 */
        .subsidiary-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 30px;
            margin: 50px 0;
        }
        .sub-card {
            background: var(--warm-surface);
            border-radius: 36px;
            padding: 35px 25px 25px;
            box-shadow: var(--shadow-warm);
            transition: var(--transition-smooth);
            border: 1px solid rgba(179,139,74,0.15);
            text-align: center;
        }
        .sub-card:hover {
            transform: translateY(-10px);
            border-color: var(--gold);
            box-shadow: 0 40px 60px -16px rgba(179,139,74,0.3);
        }
        .sub-card i {
            font-size: 2.8rem;
            color: var(--gold);
            margin-bottom: 20px;
            transition: transform 0.5s;
        }
        .sub-card:hover i {
            transform: scale(1.15);
        }
        .sub-card h3 {
            font-size: 1.6rem;
            font-weight: 600;
            color: #6b4f2e;
            margin-bottom: 12px;
        }
        .sub-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.5;
        }
        /* 企业文化卡片 */
        .culture-box {
            background: linear-gradient(145deg, #fcf3e5, #f5e5d5);
            border-radius: 80px;
            padding: 50px 40px;
            margin: 40px 0;
            border: 1px solid rgba(179,139,74,0.3);
            box-shadow: inset 0 0 30px rgba(255,255,255,0.6);
        }
        .values-list {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: center;
            margin-top: 30px;
        }
        .value-item {
            flex: 1 1 150px;
            text-align: center;
        }
        .value-item i {
            font-size: 2.5rem;
            color: var(--gold);
            margin-bottom: 15px;
        }
        .value-item h4 {
            font-size: 1.3rem;
            color: #6b4f2e;
        }
        /* 未来展望 */
        .future-box {
            background: var(--warm-surface);
            border-radius: 60px;
            padding: 40px 50px;
            box-shadow: var(--shadow-warm);
            border: 1px solid rgba(179,139,74,0.2);
            margin: 40px 0;
        }
        .future-box p {
            font-size: 1.15rem;
            color: var(--text-muted);
            line-height: 1.8;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }
        /* 装饰分隔 */
        .divider {
            width: 150px;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--gold), var(--gold-light), var(--gold), transparent);
            margin: 40px auto;
        }