/* ============================================
   About 页面专属样式 - 深色科技风格
   与 index.html 保持一致的设计语言
   ============================================ */

/* CSS 变量：统一的容器边距 */
#about {
    --container-max-width: 1440px;
    --container-padding-x: 20px;
}

/* About 页面整体背景 - 统一深色，与首页一致 */
#about {
    background: linear-gradient(180deg, #020617 0%, #0F172A 50%, #020617 100%);
    min-height: 100vh;
}

/* About 页面 section-content 统一左右边距 */
#about .section-content {
    padding-left: var(--container-padding-x);
    padding-right: var(--container-padding-x);
}

/* ============================================
   Banner 区域 - 深色科技风格
   ============================================ */

.about .server-banner2 {
    position: relative;
    height: 400px;
    width: 100%;
    /* 深色科技渐变背景 */
    background:
        radial-gradient(ellipse at 20% 30%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(56, 189, 248, 0.12) 0%, transparent 50%),
        linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 深色遮罩层 */
.about .server-banner2::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, rgba(15, 23, 42, 0.7) 0%, rgba(15, 23, 42, 0.4) 50%, rgba(15, 23, 42, 0.3) 100%);
    pointer-events: none;
    z-index: 1;
}

.about .server-banner2 .section-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.about .server-banner2 h1 {
    font-size: 56px;
    line-height: 1.2;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 20px;
    background: linear-gradient(120deg,
            #FFFFFF 0%,
            #FFFFFF 40%,
            #E0F2FE 48%,
            #BFDBFE 50%,
            #E0F2FE 52%,
            #FFFFFF 60%,
            #FFFFFF 100%);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 6s linear infinite;
    filter: drop-shadow(0 0 20px rgba(191, 219, 254, 0.8));
}

@keyframes shine {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

.about .server-banner2 .server-banner-desc {
    font-size: 18px;
    color: rgba(226, 232, 240, 0.85);
    line-height: 1.8;
}

/* ============================================
   关于主题云区域
   ============================================ */

.about-details {
    background: transparent;
    padding: 80px 0;
}

.about-details h2 {
    font-size: 36px;
    font-weight: 600;
    color: #F9FAFB;
    margin-bottom: 40px;
    text-align: center;
    background: linear-gradient(135deg, #FFFFFF 0%, #38BDF8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-details .about-details-box {
    gap: 60px;
}

.about-details .about-details-left {
    flex: 1;
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 16px;
    padding: 40px;
    box-shadow:
        0 8px 32px rgba(15, 23, 42, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.about-details .about-details-left p {
    font-size: 16px;
    text-indent: 32px;
    line-height: 32px;
    color: rgba(226, 232, 240, 0.9);
    margin-bottom: 20px;
}

.about-details .about-details-right {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    max-width: 500px;
}

.about-details .about-details-right .about-details-item {
    flex: 0 1 calc(50% - 10px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 30px 20px;
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow:
        0 4px 16px rgba(15, 23, 42, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.about-details .about-details-right .about-details-item:hover {
    transform: translateY(-5px);
    border-color: rgba(56, 189, 248, 0.4);
    box-shadow:
        0 8px 32px rgba(56, 189, 248, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.about-details .about-details-right .about-details-item h2 {
    font-size: 48px;
    font-weight: 700;
    color: #38BDF8;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #38BDF8 0%, #6366F1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-details .about-details-right .about-details-item p {
    font-size: 14px;
    color: rgba(203, 213, 225, 0.8);
    margin-top: 10px;
}

/* ============================================
   为什么选择我们 / 价值观区域
   ============================================ */

.about-reason {
    padding: 80px 0;
    background: transparent;
}

.about-why {
    background: transparent;
}

.about-reason .section-title h2 {
    font-size: 36px;
    font-weight: 600;
    color: #F9FAFB;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, #FFFFFF 0%, #38BDF8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-reason .reason {
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.about-reason .reason-box {
    flex: 0 1 calc(33.333% - 20px);
    min-width: 280px;
    max-width: 400px;
    padding: 40px 30px;
    height: auto;
    min-height: 280px;
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        0 8px 32px rgba(15, 23, 42, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.about-reason .reason-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center,
            rgba(56, 189, 248, 0.15) 0%,
            transparent 50%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.about-reason .reason-box:hover {
    transform: translateY(-8px);
    border-color: rgba(56, 189, 248, 0.4);
    box-shadow:
        0 12px 40px rgba(56, 189, 248, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.about-reason .reason-box:hover::before {
    opacity: 1;
}

.about-reason .reason-box h4 {
    font-size: 22px;
    font-weight: 600;
    color: #38BDF8;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #38BDF8 0%, #6366F1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-reason .reason-box p {
    font-size: 16px;
    line-height: 28px;
    color: rgba(226, 232, 240, 0.85);
}

/* 携手千行百业区域样式 */
.about-together {
    background: transparent;
}

.about-together .reason-box {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.about-together .reason-box h4 {
    color: #FFFFFF;
    background: linear-gradient(135deg, #FFFFFF 0%, #38BDF8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-together .reason-box p {
    color: rgba(226, 232, 240, 0.9);
}

/* ============================================
   里程碑区域（保持原有深色风格）
   ============================================ */

.about-time {
    background: rgba(15, 23, 42, 0.8);
    padding: 80px 0;
}

.about-time .section-title h2 {
    font-size: 36px;
    font-weight: 600;
    color: #F9FAFB;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, #FFFFFF 0%, #38BDF8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   荣誉资质、精选客户案例
   ============================================ */

.about-box {
    padding: 80px 0;
    background: transparent;
}

.about-box .section-title h2 {
    font-size: 36px;
    font-weight: 600;
    color: #F9FAFB;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, #FFFFFF 0%, #38BDF8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-box .box-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin: 0;
}

.about-box .box-list .box-item {
    flex: 0 1 calc(33.333% - 20px);
    min-width: 300px;
    max-width: 400px;
    padding: 40px;
    height: auto;
    min-height: 260px;
    text-align: center;
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        0 8px 32px rgba(15, 23, 42, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    cursor: pointer;
}

.about-box .box-list .box-item:hover {
    transform: translateY(-8px);
    border-color: rgba(56, 189, 248, 0.4);
    box-shadow:
        0 12px 40px rgba(56, 189, 248, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.about-box .box-list .box-item img {
    width: 100%;
    max-width: 248px;
    height: auto;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.3);
}

.about-box .box-list .box-item p,
.about-box .box-list .box-item h4 {
    color: rgba(226, 232, 240, 0.9);
    margin-top: 20px;
}

.about-box .box-list .box-item h4 {
    font-size: 18px;
    font-weight: 600;
    color: #38BDF8;
}

/* 精选客户案例样式 */
.about-example {
    background: transparent;
}

.about-example .box-list .box-item {
    min-height: 280px;
}

/* ============================================
   联系我们区域
   ============================================ */

.about-custom {
    padding: 80px 0;
    background: transparent;
}

.about-custom .section-title h2 {
    font-size: 36px;
    font-weight: 600;
    color: #F9FAFB;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, #FFFFFF 0%, #38BDF8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-custom .custom {
    margin-top: 40px;
    gap: 40px;
}

.about-custom .custom-box {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 30px;
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow:
        0 4px 16px rgba(15, 23, 42, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.about-custom .custom-box:hover {
    transform: translateY(-5px);
    border-color: rgba(56, 189, 248, 0.4);
    box-shadow:
        0 8px 32px rgba(56, 189, 248, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.about-custom .custom-box p {
    font-size: 16px;
    color: rgba(226, 232, 240, 0.9);
}

.about-custom .btn-contact {
    margin-top: 40px;
}

.about-custom .btn-contact .btn {
    position: relative;
    overflow: hidden;
    font-size: 16px;
    font-weight: 600;
    padding: 14px 48px;
    background: linear-gradient(135deg, #38BDF8 0%, #6366F1 100%);
    border: none;
    box-shadow: 0 12px 40px rgba(56, 189, 248, 0.4);
    transition: all 0.3s ease;
}

.about-custom .btn-contact .btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
}

.about-custom .btn-contact .btn:hover::before {
    left: 100%;
}

.about-custom .btn-contact .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 48px rgba(56, 189, 248, 0.6);
}

.about-custom .btn-contact .btn a {
    color: #FFFFFF;
    text-decoration: none;
}

/* ============================================
   移动端适配
   ============================================ */

@media (max-width: 768px) {

    .about .server-banner2 {
        height: 300px;
    }

    .about .server-banner2 h1 {
        font-size: 36px;
    }

    .about .server-banner2 .server-banner-desc {
        font-size: 16px;
    }

    .about-details {
        padding: 60px 0;
    }

    .about-details .about-details-box {
        flex-direction: column;
        gap: 30px;
    }

    .about-details .about-details-right {
        max-width: 100%;
    }

    .about-details .about-details-right .about-details-item {
        flex: 0 1 calc(50% - 10px);
    }

    .about-reason {
        padding: 60px 0;
    }

    .about-reason .reason-box {
        flex: 0 1 100%;
        min-width: auto;
    }

    .about-time {
        padding: 60px 0;
    }

    .about-box {
        padding: 60px 0;
    }

    .about-box .box-list .box-item {
        flex: 0 1 100%;
        min-width: auto;
    }

    .about-custom {
        padding: 60px 0;
    }

    .about-custom .custom {
        flex-direction: column;
        gap: 20px;
    }
}