/* ===== 英雄区 ===== */
.hero {
    padding: 72px 0 64px;
    background: linear-gradient(165deg, #fffcf9 0%, #fff6ef 100%);
    border-bottom: 1px solid rgba(254, 99, 10, 0.07);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 20px;
}

.hero-text h1 .highlight {
    color: var(--primary-about);
    position: relative;
}

.hero-text p {
    font-size: 1.2rem;
    color: #4a4a4a;
    max-width: 520px;
    margin-bottom: 32px;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 8px;
}

.hero-stats .stat-item {
    display: flex;
    flex-direction: column;
}

.hero-stats .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-about);
    letter-spacing: -0.02em;
}

.hero-stats .stat-label {
    font-size: 0.9rem;
    color: #666;
    font-weight: 450;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-image .illustration {
    width: 100%;
    max-width: 520px;
    background: var(--primary-about-lighter);
    border-radius: 40px;
    padding: 40px 32px;
    box-shadow: 0 20px 60px rgba(254, 99, 10, 0.10);
    border: 1px solid rgba(254, 99, 10, 0.06);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    transition: transform 0.3s ease;
}

.hero-image .illustration:hover {
    transform: translateY(-4px);
}

.illustration .icon-card {
    background: #fff;
    border-radius: 20px;
    padding: 24px 20px;
    flex: 1 0 100px;
    text-align: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(254, 99, 10, 0.05);
}

.illustration .icon-card i {
    font-size: 2.6rem;
    color: var(--primary-about);
    margin-bottom: 8px;
}

.illustration .icon-card span {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: #2a2a2a;
}

/* ===== 通用标题 ===== */
.section-title {
    text-align: center;
    margin-bottom: 56px;
}

.section-title h2 {
    font-size: 2.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-title h2 .highlight {
    color: var(--primary-about);
}

.section-title p {
    color: #5a5a5a;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 使命 + 愿景 + 价值观 ===== */
.mission-section {
    padding: 80px 0 64px;
    background: #ffffff;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.mission-card {
    background: var(--primary-about-lighter);
    padding: 40px 32px 36px;
    border-radius: 32px;
    border: 1px solid rgba(254, 99, 10, 0.06);
    transition: box-shadow 0.25s, transform 0.2s;
    text-align: center;
}

.mission-card:hover {
    box-shadow: 0 12px 40px rgba(254, 99, 10, 0.07);
    transform: translateY(-4px);
}

.mission-card .icon-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: #fff;
    border-radius: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 16px rgba(254, 99, 10, 0.08);
    font-size: 2rem;
    color: var(--primary-about);
}
.icon-wrap i { 
    font-size: 2.5rem;
}

.mission-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.mission-card p {
    color: #4a4a4a;
    font-size: 0.98rem;
}


/* ===== 数据/成就 ===== */
.stats-section {
    padding: 72px 0;
    background: #ffffff;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.stats-grid .stat-box {
    padding: 32px 16px;
    background: var(--primary-about-lighter);
    border-radius: 28px;
    border: 1px solid rgba(254, 99, 10, 0.04);
    transition: background 0.2s;
}

.stats-grid .stat-box:hover {
    background: var(--primary-about-light);
}

.stats-grid .stat-box .number {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--primary-about);
    letter-spacing: -0.02em;
}

.stats-grid .stat-box .label {
    font-size: 1rem;
    color: #4a4a4a;
    font-weight: 500;
}

/* ===== 时间线 / 历程 ===== */
.timeline-section {
    padding: 72px 0 80px;
    background: #fcfaf8;
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 720px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 12px;
    bottom: 12px;
    width: 3px;
    background: var(--primary-about-soft);
    border-radius: 12px;
}

.timeline-item {
    display: flex;
    gap: 28px;
    padding-bottom: 40px;
    position: relative;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item .dot {
    position: absolute;
    left: -32px;
    top: 6px;
    width: 16px;
    height: 16px;
    background: var(--primary-about);
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 0 0 4px var(--primary-about-soft);
}

.timeline-item .year {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-about);
    min-width: 70px;
}

.timeline-item .content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.timeline-item .content p {
    color: #5a5a5a;
    font-size: 0.95rem;
}


/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-image .illustration {
        max-width: 100%;
    }

    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .mission-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        flex-wrap: wrap;
        gap: 12px;
    }

    .nav-links {
        gap: 16px;
        flex-wrap: wrap;
        justify-content: center;
        font-size: 0.85rem;
    }

    .hero-text h1 {
        font-size: 2.4rem;
    }

    .hero-stats {
        gap: 24px;
        flex-wrap: wrap;
    }

    .team-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .cta-box {
        padding: 40px 24px;
    }

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

    .footer .container {
        flex-direction: column;
        text-align: center;
    }

    .timeline {
        padding-left: 24px;
    }

    .timeline-item .dot {
        left: -20px;
        width: 14px;
        height: 14px;
    }
}

@media (max-width: 480px) {
    .team-grid {
        grid-template-columns: 1fr;
        max-width: 300px;
        margin: 0 auto;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        max-width: 280px;
        margin: 0 auto;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

    .section-title h2 {
        font-size: 1.9rem;
    }

    .nav-links {
        gap: 12px;
        font-size: 0.8rem;
    }

    .logo {
        font-size: 1.2rem;
    }
}