/* 关于我们页样式 */

.page-about {
    background: #ffffff;
}

/* 内容区：不限 max-width，左右固定留白 120px（与产品/方案页一致） */
.page-about .container {
    max-width: none;
    width: 100%;
    margin: 0;
    padding-left: 120px;
    padding-right: 120px;
    box-sizing: border-box;
}

/* ========== 首屏内透明导航（滚动后固定白底） ========== */
.page-about .site-header--light {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    background: transparent;
    box-shadow: none;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.page-about .site-header--light.is-scrolled {
    position: fixed;
    background: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.page-about .site-header--light .nav-list a {
    color: #1a1a1a;
}

.page-about .site-header--light .nav-list a::after {
    background: #0162e4;
    opacity: 0;
}

.page-about .site-header--light .nav-list a:hover::after,
.page-about .site-header--light .nav-list a.is-active::after {
    opacity: 1;
}

.page-about .site-header--light .logo img {
    /* logo_white 为蓝字透明底，适配浅色首屏 */
    filter: none;
}

/* 透明态（非滚动）：毛玻璃按钮，在深色背景区域上保持醒目 */
.page-about .site-header--light:not(.is-scrolled) .header-login {
    color: #1a2b4a;
    border-color: rgba(255, 255, 255, 0.7);
    background: rgba(255, 255, 255, 0.55);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.page-about .site-header--light:not(.is-scrolled) .header-login:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 4px 16px rgba(1, 98, 228, 0.3);
}

/* 滚动态（白底 header）：透明按钮 + 深色文字 */
.page-about .site-header--light.is-scrolled .header-login {
    color: #1a1a1a;
    border-color: rgba(26, 26, 26, 0.22);
    background: transparent;
    box-shadow: none;
}

.page-about .site-header--light.is-scrolled .header-login:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

/* ========== Banner：1920x736（含顶部导航） ========== */
.about-hero {
    position: relative;
    width: 100%;
    /* 按素材比例 736/1920 ≈ 38.33vw */
    height: clamp(420px, 38.33vw, 736px);
    overflow: hidden;
    background-color: #dceaf8;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
}

.about-hero-inner {
    position: relative;
    z-index: 1;
    width: 100%;
    display: flex;
    align-items: center;
    height: 100%;
    /* 为叠层导航留出空间，避免文案顶到导航 */
    padding-top: var(--header-height);
    box-sizing: border-box;
}

.about-hero-copy {
    max-width: 760px;
    padding: 24px 0;
}

/* 标题区：ABOUT US 在后，「关于我们」叠在字标中下部 */
.about-hero-title-wrap {
    position: relative;
    display: block;
    width: fit-content;
    max-width: 100%;
    /* 为上方 ABOUT US 留出露头空间 */
    padding-top: 36px;
    margin-bottom: 28px;
}

/* ABOUT US 字标：透明底浅蓝描边，宽 528，垂直盖住中文标题 */
.about-hero-en {
    position: absolute;
    left: -12px;
    top: -25%;
    z-index: 0;
    width: min(528px, 92vw);
    height: auto;
    max-width: none;
    pointer-events: none;
    user-select: none;
}

.about-hero-title {
    position: relative;
    z-index: 1;
    margin: 0;
    font-family: 'Alimama ShuHeiTi', '阿里妈妈数黑体', 'PingFang SC',
        'Microsoft YaHei', sans-serif;
    font-size: clamp(48px, 5.5vw, 90px);
    font-weight: bold;
    line-height: 1;
    letter-spacing: 0.05em;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #0162e4;
}

/* 标题下方蓝色渐变短线 */
.about-hero-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    margin-top: 16px;
    opacity: 1;
    background: linear-gradient(90deg, #0162e4 0%, #0162e433 100%);
}

.about-hero-desc {
    margin: 0 0 48px;
    max-width: 720px;
    font-family: 'Source Han Sans', 'Source Han Sans SC', '思源黑体',
        'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 20px;
    font-weight: normal;
    line-height: 1.7;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #333333;
}

.about-hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 28px 36px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.about-hero-features li {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 120px;
}

.about-hero-features img {
    width: 64px;
    height: 64px;
    object-fit: contain;
    margin-bottom: 10px;
}

.about-hero-features strong {
    font-size: 15px;
    font-weight: 600;
    color: #0a2a6b;
    line-height: 1.3;
}

.about-hero-features span {
    margin-top: 4px;
    font-size: 12px;
    font-weight: 400;
    line-height: 1.4;
    color: #8a94a6;
}

/* ========== 公司介绍：整块背景 1920x800，文案叠左侧 ========== */
.about-intro {
    position: relative;
    width: 100%;
    /* 按素材比例 800/1920 ≈ 41.67vw */
    min-height: clamp(480px, 41.67vw, 800px);
    padding: 72px 0;
    box-sizing: border-box;
    background-color: #5ba3e8;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
}

.about-intro-inner {
    width: 100%;
}

.about-intro-copy {
    max-width: 832px;
}

.about-intro-head {
    margin-bottom: 28px;
}

.about-intro-title-row {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 10px 14px;
}

.about-intro-head h2 {
    margin: 0;
    font-family: 'Source Han Sans', 'Source Han Sans SC', '思源黑体',
        'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 40px;
    font-weight: bold;
    line-height: 40px;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #222222;
}

.about-intro-en {
    margin: 0;
    font-family: 'Source Han Sans', 'Source Han Sans SC', '思源黑体',
        'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    font-weight: 500;
    line-height: 20px;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    text-transform: uppercase;
    color: #666666;
}

.about-intro-line {
    display: block;
    width: 48px;
    height: 4px;
    margin-top: 12px;
    background: linear-gradient(90deg, #0162e4 0%, #0162e433 100%);
}

.about-intro-text p {
    margin: 0;
    font-family: 'Source Han Sans', 'Source Han Sans SC', '思源黑体',
        'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 20px;
    font-weight: normal;
    line-height: 32px;
    text-align: justify;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #333333;
}

.about-intro-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 26px;
    margin: 36px 0 0;
    padding: 0;
    list-style: none;
}

.about-stat {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 260px;
    height: 120px;
    padding: 0 12px;
    box-sizing: border-box;
    border-radius: 16px;
    opacity: 1;
    background: rgba(244, 249, 255, 0.5);
    border: 1px solid #ffffff;
    box-shadow: 0 6px 15px 0 rgba(1, 98, 228, 0.3);
}

.about-stat img {
    object-fit: contain;
    flex-shrink: 0;
}

.about-stat-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.about-stat-value {
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-weight: inherit;
}

.about-stat-num {
    font-family: 'Alibaba PuHuiTi 3.0', 'Alibaba PuHuiTi', '阿里巴巴普惠体',
        'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 40px;
    font-weight: 500;
    line-height: 40px;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #0162e4;
}

.about-stat-unit {
    font-family: 'Source Han Sans', 'Source Han Sans SC', '思源黑体',
        'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    font-weight: normal;
    line-height: 20px;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #0162e4;
}

.about-stat-label {
    margin-top: 6px;
    font-family: 'Source Han Sans', 'Source Han Sans SC', '思源黑体',
        'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.3;
    color: #333333;
}

/* ========== 我们的优势 ========== */
.about-advantage {
    background: #f5f8fc;
    padding: 80px 0 88px;
}

.about-section-head {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin-bottom: 48px;
}

.about-section-head h2 {
    margin: 0;
    font-size: 50px;
    font-weight: 700;
    line-height: 1.3;
    color: #222222;
}

.about-section-deco {
    display: block;
    width: 50px;
    height: 18px;
    object-fit: contain;
    flex-shrink: 0;
}

.about-advantage-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.about-advantage-card {
    display: flex;
    flex-direction: column;
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 28px rgba(10, 40, 100, 0.08);
    transition: transform var(--transition), box-shadow var(--transition);
}

.about-advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(1, 98, 228, 0.14);
}

/* 优势卡图：素材 528x272 */
.about-advantage-media {
    width: 100%;
    aspect-ratio: 528 / 272;
    overflow: hidden;
    background: #0a2a6b;
}

.about-advantage-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.about-advantage-card:hover .about-advantage-media img {
    transform: scale(1.04);
}

.about-advantage-body {
    padding: 24px 22px 28px;
}

.about-advantage-body h3 {
    margin: 0 0 16px;
    font-family: 'Source Han Sans', 'Source Han Sans SC', '思源黑体',
        'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 24px;
    font-weight: bold;
    line-height: normal;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #333333;
}

.about-advantage-body ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.about-advantage-body li {
    position: relative;
    padding-left: 22px;
    margin-bottom: 12px;
    font-family: 'Source Han Sans', 'Source Han Sans SC', '思源黑体',
        'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 20px;
    font-weight: normal;
    line-height: normal;
    text-align: justify;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #333333;
}

.about-advantage-body li:last-child {
    margin-bottom: 0;
}

.about-advantage-body li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.45em;
    width: 10px;
    height: 10px;
    opacity: 1;
    border-radius: 50%;
    background: #0162e4;
}

/* ========== 资质荣誉：背景 1920x820 ========== */
.about-honor {
    position: relative;
    width: 100%;
    min-height: clamp(520px, 42.7vw, 650px);
    padding: 80px 0 0px;
    background-color: #eef5ff;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
    box-sizing: border-box;
    overflow: hidden;
}

.about-honor-inner {
    position: relative;
    z-index: 1;
}

.about-honor-head {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 48px;
}

.about-honor-head h2 {
    margin: 0;
    font-family: 'Source Han Sans', 'Source Han Sans SC', '思源黑体',
        'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 50px;
    font-weight: bold;
    line-height: 60px;
    text-align: center;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #222222;
}

.about-honor-stage {
    position: relative;
    padding-top: 24px;
}

/* 背景英文标题字标：叠在证书后方 */
.about-honor-en {
    position: absolute;
    left: 50%;
    top: -5%;
    transform: translateX(-50%);
    z-index: 0;
    width: min(1579px, 92%);
    height: auto;
    max-width: none;
    pointer-events: none;
    user-select: none;
    opacity: 0.85;
}

.about-honor-list {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 40px;
    margin: 0;
    padding: 0;
    list-style: none;
    align-items: end;
}

.about-honor-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

/* 证书框 390x279，证书图叠在白区内侧 23,19 / 344x233 */
.about-honor-frame {
    position: relative;
    width: 100%;
    max-width: 390px;
    aspect-ratio: 390 / 279;
    filter: drop-shadow(0 12px 28px rgba(10, 40, 100, 0.14));
    transition: transform var(--transition);
}

.about-honor-item:hover .about-honor-frame {
    transform: translateY(-6px);
}

.about-honor-border,
.about-honor-photo {
    position: absolute;
    display: block;
    max-width: none;
}

.about-honor-border {
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: fill;
    z-index: 1;
    pointer-events: none;
}

.about-honor-photo {
    left: calc(23 / 390 * 100%);
    top: calc(19 / 279 * 100%);
    width: calc(344 / 390 * 100%);
    height: calc(233 / 279 * 100%);
    object-fit: cover;
    z-index: 2;
}

/* 展台底座 */
.about-honor-pedestal {
    display: block;
    width: min(320px, 92%);
    height: auto;
    margin-top: -8px;
    pointer-events: none;
    user-select: none;
}

.about-honor-label {
    margin: 12px 0 0;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    color: #1a1a1a;
}

/* ========== CTA：背景 1920x820 ========== */
.about-cta {
    position: relative;
    width: 100%;
    /* 按素材比例 820/1920 ≈ 42.7vw */
    height: clamp(420px, 42.7vw, 820px);
    background-color: #e8f1fb;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
}

.about-cta-inner {
    position: relative;
    z-index: 1;
    width: 100%;
}

.about-cta-copy {
    max-width: 780px;
}

.about-cta-copy h2 {
    margin: 0 0 16px;
    font-family: 'Alimama ShuHeiTi', '阿里妈妈数黑体', 'PingFang SC',
        'Microsoft YaHei', sans-serif;
    font-size: 50px;
    font-weight: bold;
    line-height: 80px;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #333333;
}

.about-cta-copy p {
    margin: 0 0 36px;
    font-family: 'Source Han Sans', 'Source Han Sans SC', '思源黑体',
        'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 36px;
    font-weight: normal;
    line-height: 40px;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #333333;
}

.about-cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 186px;
    height: 60px;
    padding: 0 28px;
    box-sizing: border-box;
    border-radius: 50px;
    background: #0162e4;
    font-family: 'Source Han Sans', 'Source Han Sans SC', '思源黑体',
        'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 20px;
    font-weight: 500;
    line-height: normal;
    text-align: center;
    letter-spacing: 0;
    font-variation-settings: 'opsz' auto;
    font-feature-settings: 'kern' on;
    color: #ffffff;
    text-decoration: none;
    transition: transform var(--transition), box-shadow var(--transition);
}

.about-cta-btn img {
    width: 24px;
    height: 24px;
    display: block;
    flex-shrink: 0;
}

.about-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(1, 98, 228, 0.35);
}

/* ========== 响应式 ========== */
@media (max-width: 1200px) {
    .page-about .container {
        padding-left: 48px;
        padding-right: 48px;
    }

    .about-intro {
        background-position: 70% center;
    }

    .about-intro-copy {
        max-width: 832px;
    }

    .about-advantage-list,
    .about-honor-list {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin-left: auto;
        margin-right: auto;
    }

    .about-honor-list {
        gap: 48px;
    }
}

@media (max-width: 900px) {
    .page-about .container {
        padding-left: 24px;
        padding-right: 24px;
    }

    .about-intro {
        min-height: 0;
        height: auto;
        padding: 64px 0;
        background-position: 80% center;
    }

    .about-intro-copy {
        max-width: 100%;
        padding: 28px 24px;
        background: rgba(255, 255, 255, 0.82);
        backdrop-filter: blur(8px);
        border-radius: 16px;
        box-shadow: 0 8px 32px rgba(10, 40, 100, 0.1);
    }

    .about-intro-head h2 {
        font-size: 32px;
        line-height: 36px;
    }

    .about-intro-text p {
        font-size: 16px;
        line-height: 28px;
    }

    .about-intro-stats {
        gap: 16px;
    }

    .about-stat {
        width: 100%;
        max-width: 260px;
    }
}

@media (max-width: 720px) {
    .about-hero {
        height: auto;
        min-height: 420px;
        padding: 0 0 56px;
    }

    .about-hero-inner {
        padding-top: calc(var(--header-height) + 24px);
    }

    .about-hero-title-wrap {
        padding-top: 24px;
        margin-bottom: 20px;
    }

    .about-hero-en {
        left: -8px;
        width: min(360px, 88vw);
    }

    .about-hero-desc {
        font-size: 15px;
        line-height: 1.7;
        margin-bottom: 36px;
    }

    .about-hero-features {
        gap: 20px 24px;
    }

    .about-hero-features li {
        width: 100px;
    }

    .about-hero-features img {
        width: 52px;
        height: 52px;
    }

    .about-intro,
    .about-advantage,
    .about-honor {
        padding: 56px 0;
    }

    .about-intro-copy {
        padding: 24px 20px;
    }

    .about-intro-head h2 {
        font-size: 28px;
        line-height: 32px;
    }

    .about-stat-num {
        font-size: 32px;
        line-height: 32px;
    }

    .about-section-head {
        gap: 14px;
        margin-bottom: 32px;
    }

    .about-section-head h2,
    .about-honor-head h2 {
        font-size: 32px;
        line-height: 40px;
    }

    .about-honor-head {
        gap: 14px;
        margin-bottom: 32px;
    }

    .about-honor-en {
        width: min(900px, 96%);
        top: 0;
    }

    .about-cta {
        height: auto;
        min-height: 360px;
        padding: 56px 0 64px;
        background-position: 70% center;
    }

    .about-cta-copy {
        max-width: 100%;
        background: rgba(255, 255, 255, 0.72);
        backdrop-filter: blur(6px);
        padding: 24px 20px;
        border-radius: 12px;
    }

    .about-cta-copy h2 {
        font-size: 32px;
        line-height: 48px;
    }

    .about-cta-copy p {
        font-size: 22px;
        line-height: 28px;
        margin-bottom: 28px;
    }

    .about-cta-btn {
        width: 160px;
        height: 52px;
        font-size: 18px;
    }
}

/* ========== 微信咨询弹窗（样式统一由 common.css 控制） ========== */