/* ============================================
   关于我们页面 - 专属样式
   炫酷科技感 x 霓虹灯效 x 红紫渐变
   ============================================ */

/* ========== 公司介绍区域 ========== */
.about-intro-section {
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(15, 15, 26, 1) 100%);
}
.about-intro-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}
.about-intro-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 2;
    position: relative;
    padding: 30px 0;
}
.about-intro-text::before,
.about-intro-text::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    margin: 0 auto;
    border-radius: 1px;
}
.about-intro-text::before {
    background: var(--gradient-main);
    margin-bottom: 25px;
    box-shadow: 0 0 10px rgba(230, 57, 70, 0.4);
}
.about-intro-text::after {
    background: var(--gradient-accent);
    margin-top: 25px;
    box-shadow: 0 0 10px rgba(155, 93, 229, 0.4);
}

/* ========== 愿景与使命 ========== */
.about-vision-section {
    background: linear-gradient(180deg, rgba(15, 15, 26, 1) 0%, var(--bg-dark) 100%);
}
.vision-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.vision-card {
    text-align: center;
    padding: 50px 40px;
    position: relative;
    overflow: hidden;
}
.vision-icon {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    position: relative;
    z-index: 1;
}
.vision-card:first-child .vision-icon {
    background: rgba(230, 57, 70, 0.1);
    border: 2px solid rgba(230, 57, 70, 0.3);
    color: var(--primary);
    box-shadow: 0 0 25px rgba(230, 57, 70, 0.2);
}
.vision-card:last-child .vision-icon {
    background: rgba(155, 93, 229, 0.1);
    border: 2px solid rgba(155, 93, 229, 0.3);
    color: var(--secondary);
    box-shadow: 0 0 25px rgba(155, 93, 229, 0.2);
}
.vision-card:hover .vision-icon {
    animation: glowPulse 1.5s ease-in-out infinite;
}
.vision-card h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}
.vision-card:first-child h3 {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.vision-card:last-child h3 {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.vision-card p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    position: relative;
    z-index: 1;
}
.vision-glow {
    position: absolute;
    bottom: -40%;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 200px;
    border-radius: 50%;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}
.vision-card:first-child .vision-glow {
    background: radial-gradient(circle, rgba(230, 57, 70, 0.12) 0%, transparent 70%);
}
.vision-card:last-child .vision-glow {
    background: radial-gradient(circle, rgba(155, 93, 229, 0.12) 0%, transparent 70%);
}
.vision-card:hover .vision-glow {
    opacity: 1;
}

/* ========== 发展历程时间线 ========== */
.about-timeline-section {
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(15, 15, 26, 1) 100%);
    overflow: hidden;
}
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px 0;
}
.timeline-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    background: linear-gradient(180deg, transparent, var(--primary), var(--secondary), transparent);
    box-shadow: 0 0 8px rgba(155, 93, 229, 0.3);
}
.timeline-item {
    position: relative;
    width: 50%;
    padding: 20px 0;
    display: flex;
    align-items: flex-start;
}
.timeline-left {
    padding-right: 50px;
    justify-content: flex-end;
}
.timeline-right {
    margin-left: 50%;
    padding-left: 50px;
}
.timeline-dot {
    position: absolute;
    top: 28px;
    width: 16px;
    height: 16px;
    z-index: 2;
}
.timeline-left .timeline-dot {
    right: -8px;
}
.timeline-right .timeline-dot {
    left: -8px;
}
.timeline-dot-inner {
    display: block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg-dark);
    border: 2px solid var(--secondary);
    box-shadow: 0 0 12px rgba(155, 93, 229, 0.5);
    transition: var(--transition);
}
.timeline-item:hover .timeline-dot-inner {
    background: var(--secondary);
    box-shadow: 0 0 20px rgba(155, 93, 229, 0.8);
    transform: scale(1.3);
}
.timeline-card {
    padding: 25px;
    max-width: 350px;
    animation: fadeInUp 0.6s ease forwards;
}
.timeline-year {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    background: var(--gradient-main);
    color: #fff;
    margin-bottom: 10px;
    box-shadow: 0 0 15px rgba(230, 57, 70, 0.3);
}
.timeline-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}
.timeline-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 核心优势 ========== */
.about-advantages-section {
    background: linear-gradient(180deg, rgba(15, 15, 26, 1) 0%, var(--bg-dark) 100%);
}
.advantage-card {
    text-align: center;
    padding: 40px 25px;
    position: relative;
    overflow: hidden;
}
.advantage-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    background: rgba(155, 93, 229, 0.1);
    border: 1px solid var(--border-color);
    color: var(--secondary);
    transition: var(--transition);
}
.advantage-card:hover .advantage-icon {
    background: var(--gradient-main);
    color: #fff;
    border-color: transparent;
    transform: scale(1.1) rotate(-5deg);
    box-shadow: var(--shadow-neon);
}
.advantage-card .card-title {
    font-size: 1.15rem;
    margin-bottom: 10px;
}
.advantage-glow {
    position: absolute;
    bottom: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(230, 57, 70, 0.08) 0%, transparent 70%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}
.advantage-card:hover .advantage-glow {
    opacity: 1;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .vision-grid {
        grid-template-columns: 1fr;
    }
    .vision-card {
        padding: 35px 25px;
    }

    /* 时间线改为单列 */
    .timeline-line {
        left: 20px;
    }
    .timeline-item {
        width: 100%;
        padding-left: 55px;
        padding-right: 0;
        margin-left: 0;
    }
    .timeline-left,
    .timeline-right {
        padding-left: 55px;
        padding-right: 0;
        margin-left: 0;
        justify-content: flex-start;
    }
    .timeline-left .timeline-dot,
    .timeline-right .timeline-dot {
        left: 12px;
        right: auto;
    }
    .timeline-card {
        max-width: 100%;
    }

    .grid-4 {
        grid-template-columns: 1fr;
    }
}