/* =========================
   页面基础设置
========================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    color: #17233d;
    background: #f8f7f3;

    font-family:
        "PingFang SC",
        "Microsoft YaHei",
        Arial,
        sans-serif;
}

/* =========================
   固定顶部导航栏
========================= */

header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;

    width: 100%;
    height: 88px;

    display: flex;
    align-items: center;

    padding: 0 5%;

    background: rgba(248, 247, 243, 0.96);

    border-bottom: 1px solid rgba(16, 38, 77, 0.08);

    box-shadow: 0 4px 18px rgba(16, 38, 77, 0.06);

    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.logo {
    flex-shrink: 0;
}

.logo a {
    color: #10264d;

    font-size: 28px;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.5px;
}

nav {
    margin-left: auto;
}

nav ul {
    display: flex;
    align-items: center;
    gap: 34px;

    margin: 0;
    padding: 0;

    list-style: none;
}

nav a {
    position: relative;

    color: #17233d;

    font-size: 17px;
    text-decoration: none;
    white-space: nowrap;

    transition: color 0.3s ease;
}

nav a::after {
    content: "";

    position: absolute;
    left: 50%;
    bottom: -9px;

    width: 0;
    height: 2px;

    background: #c69736;

    transform: translateX(-50%);

    transition: width 0.3s ease;
}

nav a:hover {
    color: #b1842d;
}

nav a:hover::after {
    width: 100%;
}

.language {
    display: flex;
    align-items: center;
    gap: 8px;

    margin-left: 34px;

    flex-shrink: 0;
}

.language a,
.language span {
    color: #17233d;

    font-size: 15px;
    text-decoration: none;
    white-space: nowrap;
}

.language a:hover {
    color: #b1842d;
}

.contact {
    margin-left: 28px;

    flex-shrink: 0;
}

.contact a {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-width: 118px;
    height: 44px;

    padding: 0 22px;

    color: #ffffff;
    background: #c69736;

    border: 1px solid #c69736;
    border-radius: 24px;

    font-size: 16px;
    text-decoration: none;
    white-space: nowrap;

    transition:
        background 0.3s ease,
        transform 0.3s ease,
        box-shadow 0.3s ease;
}

.contact a:hover {
    background: #b1842d;

    transform: translateY(-2px);

    box-shadow: 0 8px 20px rgba(198, 151, 54, 0.24);
}

/* 当前页面导航高亮 */

nav a.active {
    color: #b1842d;
}

nav a.active::after {
    width: 100%;
}


/* =========================
   固定返回首页按钮
========================= */


.back-arrow {
    font-size: 21px;
}

.back-text {
    white-space: nowrap;
}
/* =========================
   顶部关于我们
========================= */

.about-banner {
    min-height: 360px;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    padding: 100px 20px 65px;

    text-align: center;

    background:
        radial-gradient(
            circle at center,
            rgba(255, 255, 255, 0.98),
            rgba(246, 244, 238, 0.96)
        );

    border-bottom: 1px solid rgba(16, 38, 77, 0.08);
}

.about-banner h1 {
    margin-bottom: 14px;

    color: #10264d;

    font-size: 52px;
    line-height: 1.2;
    letter-spacing: 3px;
}

.about-banner p {
    color: #24314a;
    font-size: 21px;
    line-height: 1.7;
}

.title-line {
    width: 135px;
    height: 2px;

    margin-top: 28px;

    background: #c69736;
}


/* =========================
   公司简介
========================= */

.company-profile {
    padding: 80px 0;

    background: rgba(255, 255, 255, 0.86);
}

.profile-container {
    width: min(1180px, 88%);
    margin: 0 auto;

    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 90px;
    align-items: center;
}

.profile-small-title {
    margin-bottom: 12px;

    color: #b1842d;

    font-size: 13px;
    letter-spacing: 3px;
}

.profile-brand h2 {
    color: #10264d;

    font-size: 39px;
    letter-spacing: 2px;
}

.profile-brand-line {
    width: 70px;
    height: 2px;

    margin: 24px 0;

    background: #c69736;
}

.profile-slogan {
    color: #7a7a7a;

    font-family: Georgia, "Times New Roman", serif;

    font-size: 14px;
    line-height: 1.8;
    letter-spacing: 2px;
}

.profile-introduction {
    padding-left: 55px;

    border-left: 1px solid rgba(198, 151, 54, 0.45);
}

.profile-introduction p {
    color: #292929;

    font-size: 18px;
    line-height: 2.1;
}

/*介绍照片*/
.history-images{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:16px;

    margin-top:24px;
}

.history-images img{
    width:100%;
    height:180px;

    display:block;
    object-fit:cover;

    border-radius:14px;

    box-shadow:0 8px 20px rgba(16,38,77,.10);
}

@media(max-width:768px){

    .history-images{
        grid-template-columns:1fr;
    }

    .history-images img{
        height:220px;
    }
}
/* =========================
   通用英文小标题
========================= */

.section-label {
    margin-bottom: 10px;

    color: #b1842d;

    font-size: 13px;
    letter-spacing: 4px;
}


/* =========================
   发展历程
========================= */

.company-history {
    padding: 95px 0 110px;

    background: #f7f5ef;
}

.history-container {
    width: min(1080px, 88%);
    margin: 0 auto;
}

.history-heading {
    margin-bottom: 65px;

    text-align: center;
}

.history-heading h2 {
    margin-bottom: 12px;

    color: #10264d;

    font-size: 46px;
    letter-spacing: 3px;
}

.history-heading > p:last-child {
    color: #5f6672;

    font-size: 18px;
}

.timeline {
    position: relative;
}

.timeline::before {
    content: "";

    position: absolute;
    top: 0;
    bottom: 0;
    left: 155px;

    width: 1px;

    background: rgba(198, 151, 54, 0.55);
}

.timeline-item {
    position: relative;

    display: grid;
    grid-template-columns: 120px 40px 1fr;
    gap: 15px;

    padding-bottom: 55px;
}

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

.timeline-year {
    padding-top: 2px;

    color: #b1842d;

    font-family: Georgia, "Times New Roman", serif;

    font-size: 28px;
    font-weight: 600;
    text-align: right;
}

.timeline-dot {
    position: relative;
    z-index: 2;

    width: 13px;
    height: 13px;

    margin: 9px auto 0;

    background: #ffffff;

    border: 3px solid #c69736;
    border-radius: 50%;
}

.timeline-content {
    padding: 0 0 25px 35px;

    border-bottom: 1px solid rgba(16, 38, 77, 0.09);
}

.timeline-content h3 {
    margin-bottom: 13px;

    color: #10264d;

    font-size: 23px;
}

.timeline-content p {
    color: #353535;

    font-size: 16px;
    line-height: 2;
}


/* =========================
   我们的核心能力
========================= */

.core-capabilities {
    padding: 95px 0 110px;

    background:
        radial-gradient(
            circle at center,
            rgba(255, 255, 255, 0.98),
            rgba(246, 244, 238, 0.95)
        );
}

.core-container {
    width: min(1180px, 90%);
    margin: 0 auto;
}

.core-heading {
    margin-bottom: 58px;

    text-align: center;
}

.core-heading h2 {
    color: #10264d;

    font-size: 48px;
    letter-spacing: 3px;
}

.core-layout {
    display: grid;
    grid-template-columns: 1fr 1.08fr;
    gap: 70px;
    align-items: center;
}


/* 左侧电商平台 */

.platform-area h3 {
    margin-bottom: 28px;

    color: #17233d;

    font-size: 22px;
    font-weight: 500;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 17px;
}

.platform-item {
    min-height: 88px;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 12px;

    color: #b1842d;
    background: rgba(255, 255, 255, 0.78);

    border: 1.5px solid #d4a33d;
    border-radius: 16px;

    font-family: Georgia, "Times New Roman", serif;

    font-size: 16px;
    text-align: center;

    box-shadow: 0 7px 18px rgba(16, 38, 77, 0.08);

    transition: 0.3s ease;
}

.platform-item:hover {
    background: #ffffff;

    transform: translateY(-6px);

    box-shadow: 0 13px 28px rgba(184, 138, 43, 0.17);
}

.platform-item img {
    width: 100%;
    height: 100%;
    max-width: 105px;
    max-height: 65px;
    object-fit: contain;
    display: block;
}

.amazon-logo img {
    max-width: 120px;
    max-height: 60px;
}


/* 右侧能力卡片 */

.capability-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.capability-card {
    min-height: 145px;

    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 20px;
    align-items: center;

    padding: 25px 32px;

    background: rgba(255, 255, 255, 0.8);

    border: 1.5px solid #d4a33d;
    border-radius: 28px;

    box-shadow: 0 10px 25px rgba(16, 38, 77, 0.08);

    transition: 0.35s ease;
}

.capability-card:hover {
    background: #ffffff;

    transform: translateX(8px);

    box-shadow: 0 16px 35px rgba(184, 138, 43, 0.18);
}

.capability-symbol {
    width: 90px;
    height: 90px;

    display: flex;
    align-items: center;
    justify-content: center;

    flex-shrink: 0;
}

.capability-symbol img {
    width: 78px;
    height: 78px;

    object-fit: contain;

    display: block;
}

.capability-content h3 {
    margin-bottom: 11px;

    color: #10264d;

    font-size: 26px;
}

.capability-content p {
    color: #383838;

    font-size: 16px;
    line-height: 1.8;
}


/* =========================
   核心业务
========================= */

.core-business {
    padding: 90px 0 105px;

    background: rgba(255, 255, 255, 0.94);
}

.business-container {
    width: min(1180px, 90%);
    margin: 0 auto;
}

.business-heading {
    margin-bottom: 42px;

    text-align: center;
}

.business-heading h2 {
    margin-bottom: 12px;

    color: #10264d;

    font-size: 48px;
    letter-spacing: 3px;
}

.business-heading > p:not(.section-label) {
    color: #253149;

    font-size: 19px;
}

.business-line {
    width: 410px;
    max-width: 75%;
    height: 2px;

    margin: 22px auto;

    background: #c69736;
}

.business-heading h3 {
    color: #17233d;

    font-size: 18px;
    font-weight: 500;
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 32px;
}

.business-card {
    min-height: 150px;

    display: flex;
    align-items: center;
    gap: 26px;

    padding: 28px 36px;

    background: rgba(255, 255, 255, 0.82);

    border: 1.5px solid #c69736;
    border-radius: 20px;

    box-shadow: 0 9px 23px rgba(16, 38, 77, 0.07);

    transition: 0.35s ease;
}

.business-card:hover {
    background: #ffffff;

    transform: translateY(-7px);

    box-shadow: 0 16px 34px rgba(184, 138, 43, 0.17);
}


.business-text h4 {
    margin-bottom: 9px;

    color: #10264d;

    font-size: 24px;
}

.business-text p {
    color: #363636;

    font-size: 16px;
    line-height: 1.7;
}


/* =========================
   平板适配
========================= */

@media (max-width: 1000px) {

    .profile-container {
        grid-template-columns: 250px 1fr;
        gap: 55px;
    }

    .core-layout {
        grid-template-columns: 1fr;
        gap: 65px;
    }

    .platform-area,
    .capability-list {
        width: min(720px, 100%);
        margin: 0 auto;
    }
}


/* =========================
   手机适配
========================= */

@media (max-width: 768px) {

    .back-text {
        display: none;
    }

    .about-banner {
        min-height: 290px;
        padding-top: 90px;
    }

    .about-banner h1 {
        font-size: 38px;
    }

    .about-banner p {
        font-size: 17px;
    }

    .profile-container {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .profile-introduction {
        padding-left: 0;
        padding-top: 28px;

        border-left: none;
        border-top: 1px solid rgba(198, 151, 54, 0.45);
    }

    .profile-introduction p {
        font-size: 16px;
    }

    .history-heading h2,
    .core-heading h2,
    .business-heading h2 {
        font-size: 35px;
    }

    .timeline::before {
        left: 15px;
    }

    .timeline-item {
        grid-template-columns: 30px 1fr;
        gap: 10px;
    }

    .timeline-year {
        grid-column: 2;

        margin-bottom: 8px;

        font-size: 24px;
        text-align: left;
    }

    .timeline-dot {
        grid-column: 1;
        grid-row: 1 / span 2;

        margin-top: 8px;
    }

    .timeline-content {
        grid-column: 2;

        padding-left: 0;
    }

    .platform-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .platform-item {
        min-height: 72px;

        font-size: 14px;
    }

    .capability-card {
        grid-template-columns: 65px 1fr;

        padding: 20px;
        border-radius: 22px;
    }

    .capability-symbol {
        width: 55px;
        height: 55px;
    }

    .capability-content h3 {
        font-size: 21px;
    }

    .capability-content p {
        font-size: 14px;
    }

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

    .business-card {
        min-height: 125px;
        padding: 22px;
    }

    .business-icon {
        width: 58px;
        height: 58px;
    }

    .business-icon img {
        width: 52px;
        height: 52px;
    }

    .business-text h4 {
        font-size: 21px;
    }

    .business-text p {
        font-size: 14px;
    }
}

.business-icon {
    width: 72px;
    height: 72px;

    flex-shrink: 0;

    display: flex;
    align-items: center;
    justify-content: center;
}

.business-icon img {
    width: 64px;
    height: 64px;

    object-fit: contain;

    display: block;
}