/* 故事区块 */
        .origin-story {
            background: var(--color-white);
            border-radius: var(--border-radius-lg);
            padding: 48px 40px;
            box-shadow: var(--shadow-soft);
            position: relative;
            overflow: hidden;
        }
        .origin-story::before {
            content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 80px;
            background: var(--color-mid); border-radius: 0 0 4px 0;
        }
        .origin-story p {
            font-size: 0.95rem; color: var(--color-mid-dark); line-height: 1.85; margin-bottom: 18px;
        }
        .origin-story .highlight {
            font-family: var(--font-heading);
            font-size: 1.15rem; font-weight: 600; color: var(--color-dark);
            display: block; margin: 24px 0 16px; letter-spacing: 0.04em;
        }
        /* 使命愿景卡片 */
        .mv-card {
            background: var(--color-white); border-radius: var(--border-radius-lg);
            padding: 38px 28px; text-align: center; box-shadow: var(--shadow-soft);
            height: 100%; transition: var(--transition-smooth);
            position: relative; overflow: hidden;
        }
        .mv-card:hover { box-shadow: var(--shadow-lift); transform: translateY(-4px); }
        .mv-card .mv-icon { font-size: 2.2rem; color: var(--color-mid-dark); margin-bottom: 14px; }
        .mv-card h3 {
            font-family: var(--font-heading); font-size: 1.2rem; font-weight: 600;
            color: var(--color-dark); letter-spacing: 0.04em; margin-bottom: 8px;
        }
        .mv-card p {
            font-size: 0.88rem; color: var(--color-mid-dark); line-height: 1.7; margin: 0;
        }
         /* 品牌定位区块  */
        .positioning-block {
            background: var(--color-white);
            border-radius: var(--border-radius-lg);
            padding: 48px 36px;
            box-shadow: var(--shadow-soft);
            position: relative;
            overflow: hidden;
        }
        .positioning-block::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-mid) 0%, var(--color-mid-dark) 50%, var(--color-dark) 100%);
            border-radius: 4px 4px 0 0;
        }
        .positioning-block .quote-large {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 600;
            color: var(--color-dark);
            letter-spacing: 0.04em;
            line-height: 1.5;
            margin-bottom: 16px;
        }
        .positioning-block .quote-large::before {
            content: '"';
            font-size: 3rem;
            color: var(--color-mid);
            position: absolute;
            margin-left: -28px;
            margin-top: -8px;
            font-family: Georgia, serif;
            opacity: 0.4;
        }
        .positioning-block p {
            font-size: 0.92rem;
            color: var(--color-mid-dark);
            line-height: 1.8;
            margin-bottom: 0;
        }
                .upgrade-road {
            position: relative;
            padding-left: 40px;
            border-left: 2px solid var(--color-mid);
            margin-left: 20px;
        }
        .upgrade-road .road-item {
            position: relative;
            margin-bottom: 36px;
            padding-left: 24px;
        }
        .upgrade-road .road-item::before {
            content: '';
            position: absolute;
            left: -49px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--color-mid);
            border: 3px solid var(--color-white);
            box-shadow: 0 0 0 2px var(--color-mid);
        }
        .upgrade-road .road-item:last-child {
            margin-bottom: 0;
        }
        .upgrade-road .road-item h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-dark);
            letter-spacing: 0.04em;
            margin-bottom: 4px;
        }
        .upgrade-road .road-item p {
            font-size: 0.85rem;
            color: var(--color-mid-dark);
            margin: 0;
            line-height: 1.6;
        }
        /*  护城河卡片  */
        .moat-card {
            background: var(--color-white);
            border-radius: var(--border-radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-soft);
            height: 100%;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
            border-top: 3px solid transparent;
            cursor: default;
        }
        .moat-card:hover {
            border-top-color: var(--color-mid);
            box-shadow: var(--shadow-lift);
            transform: translateY(-4px);
        }
        .moat-card .moat-number {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 700;
            color: rgba(160, 160, 160, 0.2);
            position: absolute;
            top: 10px;
            right: 18px;
            line-height: 1;
            pointer-events: none;
            letter-spacing: 0;
        }
        .moat-card .moat-icon {
            font-size: 1.8rem;
            color: var(--color-mid-dark);
            margin-bottom: 12px;
            display: inline-block;
        }
        .moat-card h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-dark);
            letter-spacing: 0.04em;
            margin-bottom: 6px;
            position: relative;
            z-index: 1;
        }
        .moat-card p {
            font-size: 0.84rem;
            color: var(--color-mid-dark);
            line-height: 1.6;
            margin: 0;
            position: relative;
            z-index: 1;
        }
        /* 博物馆概念区  */
        .museum-concept {
            background: url(../img/wall-bg.webp) scroll no-repeat 80% 80%;
            border-radius: var(--border-radius-lg);
            padding: 40px 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .museum-concept .museum-quote {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--color-dark);
            letter-spacing: 0.04em;
            line-height: 1.6;
            max-width: 700px;
            margin: 0 auto 12px;
        }
        .museum-concept .museum-sub {
            font-size: 0.9rem;
            color: var(--color-mid-dark);
            letter-spacing: 0.04em;
            max-width: 500px;
            margin: 0 auto;
        }

        /*  响应式  */
        @media (max-width: 991px) {
          .positioning-block .quote-large {
                font-size: 1.2rem;
            }
            .positioning-block .quote-large::before {
                font-size: 2rem;
                margin-left: -18px;
                margin-top: -4px;
            }
            .upgrade-road {
                padding-left: 24px;
                margin-left: 10px;
            }
            .upgrade-road .road-item {
                padding-left: 14px;
                margin-bottom: 24px;
            }
            .upgrade-road .road-item::before {
                left: -33px;
                width: 10px;
                height: 10px;
            }
            .origin-story { padding: 30px 20px; }
            .timeline-section { padding-left: 20px; margin-left: 10px; }
            .timeline-item { padding-left: 14px; }
            .timeline-item::before { left: -29px; width: 10px; height: 10px; }