/* ===================================================
   about.css — 关于我们页面专属样式
   核力科技（上海）有限公司

   包含：Hero、公司简介、关键数据、价值观、CTA
   不含：Header、Nav、Mobile Nav、Footer、Loader、Back-to-Top、Buttons
         （这些已在 shared.css 中）
   =================================================== */

/* ===================================================
   Hero Banner — 关于我们页首屏
   =================================================== */
.about-hero {
    min-height: 85vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(180deg, #0a1628 0%, #0f2847 50%, #1a365d 100%);
    overflow: hidden;
    padding-top: 5rem;
}

/* 科技感背景网格 */
.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(0, 102, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 102, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 0;
}

/* 光晕效果 */
.about-hero::after {
    content: '';
    position: absolute;
    top: -10%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.15) 0%, rgba(0, 212, 170, 0.08) 40%, transparent 70%);
    border-radius: 50%;
    animation: pulse-glow 8s ease-in-out infinite;
    z-index: 0;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.8; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.about-hero-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.about-hero-visual {
    position: relative;
    animation: fadeInUp 1s ease 0.3s backwards;
}

.about-hero-graphic {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    background: linear-gradient(135deg, rgba(59,130,246,0.08) 0%, rgba(139,92,246,0.05) 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.about-graphic-bg {
    position: absolute;
    width: 80%;
    height: 80%;
    opacity: 0.6;
}

.about-graphic-icon {
    font-size: 4rem;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 4px 12px rgba(59,130,246,0.3));
}

.about-graphic-text {
    position: relative;
    z-index: 1;
    margin-top: 1rem;
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 0.3em;
    font-weight: 300;
}

.about-hero-content {
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.about-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 102, 255, 0.2);
    color: #00D4AA;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(0, 212, 170, 0.3);
}

.about-hero-title {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #FFFFFF 0%, #00D4AA 50%, #0066FF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    max-width: 500px;
}

/* ===================================================
   公司简介 + 图片
   =================================================== */
.about-intro {
    padding: 6rem 2rem;
    background: white;
}

.about-intro-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-intro-content .section-tag {
    display: inline-block;
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid rgba(0, 102, 255, 0.2);
}

.about-intro-content .section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

.about-intro-text {
    color: var(--gray);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.about-intro-visual {
    position: relative;
}

.about-intro-graphic {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
    background: linear-gradient(135deg, rgba(6,182,212,0.08) 0%, rgba(59,130,246,0.05) 100%);
    border: 1px solid rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* ===================================================
   关键数据条
   =================================================== */
.about-stats {
    padding: 4rem 2rem;
    background: linear-gradient(180deg, #1a365d 0%, #0f172a 100%);
    position: relative;
}

.about-stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 212, 170, 0.1) 0%, transparent 50%);
    z-index: 0;
}

.about-stats-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.about-stat-item {
    text-align: center;
    padding: 2rem;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.about-stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 102, 255, 0.2);
}

.about-stat-number {
    font-size: 3rem;
    font-weight: 900;
    background: linear-gradient(135deg, #00D4AA 0%, #0066FF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.about-stat-label {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.5rem;
    font-size: 1rem;
}

/* ===================================================
   企业文化 / 价值观
   =================================================== */
.about-values {
    padding: 6rem 2rem;
    background: var(--dark);
}

.about-values-inner {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    background: rgba(0, 212, 170, 0.1);
    color: #00D4AA;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid rgba(0, 212, 170, 0.2);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: white;
    margin-bottom: 1rem;
}

.section-desc {
    color: rgba(255, 255, 255, 0.6);
    max-width: 600px;
    margin: 0 auto;
}

.about-values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.about-value-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 24px;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    overflow: hidden;
}

.about-value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.about-value-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 20px 60px rgba(0, 102, 255, 0.15);
    border-color: rgba(0, 102, 255, 0.3);
}

.about-value-card:hover::before {
    transform: scaleX(1);
}

.about-value-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
}

.about-value-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.about-value-desc {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===================================================
   CTA 行动引导
   =================================================== */
.about-cta {
    padding: 6rem 2rem;
    background: white;
    text-align: center;
}

.about-cta-inner {
    max-width: 700px;
    margin: 0 auto;
}

.about-cta-title {
    font-size: 2.25rem;
    font-weight: 900;
    color: var(--dark);
    margin-bottom: 1rem;
}

.about-cta-desc {
    color: var(--gray);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.about-cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}



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

    .about-hero-subtitle {
        margin: 0 auto;
    }

    .about-hero-visual {
        order: -1;
    }

    .about-intro-inner {
        grid-template-columns: 1fr;
    }

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

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

}

@media (max-width: 768px) {
    .about-hero {
        min-height: auto;
        padding-top: 6rem;
        padding-bottom: 2rem;
    }

    .about-hero-title {
        font-size: 2.2rem;
    }

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

    .about-values-grid {
        grid-template-columns: 1fr;
    }

    .about-cta-title {
        font-size: 1.75rem;
    }

}

@media (max-width: 480px) {
    .about-hero-inner {
        padding: 2rem 1rem;
    }

    .about-hero-title {
        font-size: 1.8rem;
    }

    .about-intro,
    .about-values,
    .about-cta {
        padding: 4rem 1rem;
    }

    .about-stats-inner {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }

    .about-stat-number {
        font-size: 2.2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }
}