/*
Theme Name: Ribang Child
Theme URI: https://www.ribanglube.com
Description: Shandong Ribang New Energy Technology official website
Author: Ribang
Template: twentytwentyfive
Version: 1.0.0
Text Domain: ribang-child
*/

/* ============================================================
   基础重置与变量
   ============================================================ */
:root {
    --primary:       #0d7c66;
    --primary-dark:  #0a5a4a;
    --primary-light: #e8f2ef;
    --accent:       #c8102e;
    --text:         #2d2d2d;
    --text-light:   #888888;
    --bg-light:     #f3f7f6;
    --white:        #ffffff;
    --border:       #e5e5e5;
    --font:         "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    --container:    1500px;
}

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

body {
    font-family: var(--font);
    color: var(--text);
    line-height: 1.6;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }
a { text-decoration: none; color: var(--primary); }
ul { list-style: none; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 25px 0;
    transition: all .3s ease;
    background: transparent !important;
}
/* 鼠标悬停时只变背景，高度不变 */
.site-header:hover {
    background: rgba(10, 90, 74, .8) !important;
    box-shadow: 0 2px 10px rgba(0,0,0,.15);
    backdrop-filter: blur(8px);
}
/* 滚动后压缩高度 */
.site-header.sticky {
    background: rgba(10, 90, 74, .9) !important;
    padding: 12px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,.15);
    backdrop-filter: blur(8px);
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-right {
    display: flex;
    align-items: center;
    gap: 50px;
}
.site-logo img {
    height: 64px;
    width: auto;
    display: block;
}
.main-nav ul {
    display: flex;
    gap: 45px;
}
.main-nav a {
    color: var(--white);
    font-size: 17px;
    font-weight: 500;
    transition: opacity .2s;
}
.main-nav ul {
    display: flex;
    gap: 30px;
    list-style: none;
    margin: 0;
    padding: 0;
    position: relative;
}
.main-nav .has-dropdown {
    position: relative;
}
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,.15);
    padding: 10px 0;
    min-width: 240px;
    opacity: 0;
    visibility: hidden;
    transition: all .3s ease;
    margin-top: 10px;
    z-index: 1000;
    overflow: hidden;
}
.has-dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 20px;
}
.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}
.dropdown-menu a {
    display: block !important;
    color: #333 !important;
    padding: 12px 30px !important;
    margin: 0 !important;
    font-size: 15px !important;
    transition: all .2s !important;
    white-space: nowrap !important;
    text-decoration: none !important;
    outline: none !important;
    border: none !important;
    box-shadow: none !important;
}
.dropdown-menu a:hover {
    background: #e0f0eb !important;
    color: var(--primary) !important;
    outline: none !important;
    border: none !important;
    box-shadow: none !important;
    text-decoration: none !important;
}
.main-nav .has-megamenu {
    position: relative;
}
.megamenu {
    position: fixed;
    top: 75px;
    left: 0;
    right: 0;
    transform: translateY(10px);
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(10px);
    width: 100vw;
    padding: 60px 0 50px;
    opacity: 0;
    visibility: hidden;
    transition: all .3s ease;
    z-index: 999;
    box-shadow: 0 10px 40px rgba(0,0,0,.15);
}
.has-megamenu:hover .megamenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.megamenu .container {
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 30px;
}
.megamenu-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 40px;
    width: 100%;
}
.megamenu-col {
    text-align: center;
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.megamenu-img {
    height: 120px;
    width: auto;
    margin: 0 auto 10px;
    display: block;
    filter: drop-shadow(0 5px 15px rgba(0,0,0,.1));
    transition: transform .3s;
}
.megamenu-col:hover .megamenu-img {
    transform: translateY(-5px);
}
.megamenu-col h4 {
    font-size: 18px;
    margin: 0 auto 15px;
    color: var(--primary);
    padding-bottom: 10px;
    border-bottom: 1px solid #e0e0e0;
    width: 100%;
    max-width: 200px;
    text-align: center;
}
.megamenu ul.megamenu-list {
    list-style: none !important;
    padding: 0 !important;
    margin: 0 auto !important;
    text-align: left !important;
    width: 100% !important;
    max-width: 200px !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 15px !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}
.megamenu ul.megamenu-list li {
    font-size: 13px !important;
    color: #666 !important;
    padding: 3px 0 !important;
    line-height: 1.4 !important;
    transition: all .2s !important;
    cursor: pointer !important;
    text-align: left !important;
    white-space: nowrap !important;
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    margin: 0 !important;
}
.megamenu ul.megamenu-list li::before {
    content: '' !important;
    width: 5px !important;
    height: 5px !important;
    border-radius: 50% !important;
    background: var(--primary) !important;
    flex-shrink: 0 !important;
}
.megamenu ul.megamenu-list li:hover {
    color: var(--primary) !important;
    padding-left: 5px !important;
    background: transparent !important;
}
.megamenu-col a {
    color: #fff;
    background: var(--primary);
    font-size: 11px;
    text-decoration: none;
    transition: all .3s;
    padding: 5px 16px;
    border-radius: 20px;
    display: inline-block;
}
.megamenu-col a:hover {
    background: var(--primary-dark);
    color: #fff;
}
.main-nav a {
    color: #fff;
    text-decoration: none;
    font-size: 17px;
    font-weight: 500;
    transition: all .3s;
    position: relative;
    padding: 5px 0;
}
.main-nav a:hover {
    opacity: .8;
}
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #fff;
    transition: width .3s;
}
.main-nav a:hover::after {
    width: 100%;
}
.header-icons {
    display: flex;
    gap: 20px;
    align-items: center;
}
.header-icons svg {
    width: 24px;
    height: 24px;
    fill: var(--white);
    cursor: pointer;
}

/* 汉堡按钮（移动端显示，桌面端隐藏） */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
}
.menu-toggle span {
    display: block;
    width: 26px;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: all .3s;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ============================================================
   Hero Banner Swiper
   ============================================================ */
.hero-banner {
    width: 100%;
    background: #0a4a3f;
    position: relative;
}
.bannerSwiper .swiper-slide {
    position: relative;
}
.banner-content {
    position: absolute;
    left: calc((100% - var(--container)) / 2 + 100px);
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    color: #fff;
    width: 700px;
}
.banner-content h1,
.banner-content .banner-divider,
.banner-content p {
    opacity: 0;
    transform: translateY(60px);
    transition: all .8s ease;
}
.banner-content.animated h1 {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0s;
}
.banner-content.animated .banner-divider {
    opacity: 1;
    transform: translateY(0);
    transition-delay: .4s;
}
.banner-content.animated p {
    opacity: 1;
    transform: translateY(0);
    transition-delay: .8s;
}
.banner-bg-text {
    position: absolute;
    top: -70px;
    left: 0;
    font-size: 85px;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 2px rgba(255,255,255, .2);
    letter-spacing: 8px;
    z-index: -1;
    opacity: 0;
    transform: translateY(40px);
    transition: all .8s ease;
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 20%, rgba(0,0,0,0) 100%);
    mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 20%, rgba(0,0,0,0) 100%);
}
.banner-content.animated .banner-bg-text {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0s;
}
.banner-content h1 {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 24px;
}
.banner-divider {
    width: 60px;
    height: 4px;
    background: rgba(255,255,255,.2);
    margin-bottom: 24px;
    border-radius: 2px;
    overflow: hidden;
}
.banner-divider-fill {
    width: 0%;
    height: 100%;
    background: #fff;
    border-radius: 2px;
}
.banner-content p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: .9;
    opacity: 0;
    transform: translateY(60px);
    transition: all .8s ease;
}
.banner-btn {
    display: inline-block;
    padding: 10px 28px;
    border: 2px solid #fff;
    border-radius: 30px;
    color: #fff;
    font-size: 15px;
    font-weight: 500;
    transition: background .3s ease, color .3s ease;
}
.banner-btn-wrap {
    opacity: 0;
    transform: translateY(60px);
    transition: opacity .8s ease, transform .8s ease;
    transition-delay: 1.2s;
    display: inline-block;
}
.banner-content.animated .banner-btn-wrap {
    opacity: 1;
    transform: translateY(0);
}
.banner-btn:hover {
    background: #fff;
    color: var(--primary);
}
.btn-primary {
    display: inline-block;
    padding: 12px 32px;
    background: var(--primary);
    color: #fff;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all .3s;
}
.btn-primary:hover {
    background: var(--primary-dark);
}
.bannerSwiper {
    width: 100%;
    max-width: 1920px;
    margin: 0 auto;
    /* 容器比例 1920:968，宽度≤1920时等比缩放，>1920时不再放大 */
    aspect-ratio: 1920 / 968;
}
.bannerSwiper .swiper-slide {
    width: 100%;
    height: 100%;
}
.bannerSwiper .swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.mobile-img { display: none; }
.bannerSwiper .swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background: rgba(255,255,255,.5);
    opacity: 1;
}
.bannerSwiper .swiper-pagination-bullet-active {
    background: var(--white);
    width: 30px;
    border-radius: 6px;
}

/* ============================================================
   通用内页 Banner
   ============================================================ */
.page-banner {
    background: linear-gradient(135deg, #0a5a4a 0%, #0d7c66 100%);
    padding: 180px 0 100px;
    color: #fff;
}
.page-banner h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}
.page-breadcrumb {
    font-size: 15px;
    opacity: .8;
}
.page-breadcrumb a {
    color: #fff;
    text-decoration: none;
}
.page-breadcrumb a:hover {
    text-decoration: underline;
}
.page-content {
    padding: 80px 0;
    min-height: 400px;
}
.page-content h2 {
    font-size: 28px;
    margin: 30px 0 16px;
    color: var(--text);
}
.page-content p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

/* ============================================================
   通用 Section 标题
   ============================================================ */
.section {
    padding: 90px 0;
}
.section-title-bar {
    width: 40px;
    height: 4px;
    background: var(--primary);
    margin-bottom: 16px;
}
.section h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}
.section .subtitle {
    color: var(--text-light);
    font-size: 16px;
    margin-bottom: 50px;
}

/* ============================================================
   Product Center
   ============================================================ */
.product-center {
    background: var(--white) url('assets/pro_bg.png') right center no-repeat;
    background-size: auto 100%;
    overflow: hidden;
}
.product-detail {
    display: flex;
    align-items: center;
    gap: 60px;
    margin: 40px 0 60px;
}
.product-detail-text { flex: 1; }
.product-detail-text h3 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text);
    display: inline-block;
    padding-bottom: 4px;
    border-bottom: 3px solid var(--primary);
}
.product-detail-text p {
    color: var(--text-light);
    font-size: 16px;
    line-height: 2;
    margin-bottom: 30px;
}
.product-detail-text .view-more {
    color: var(--primary);
    font-size: 15px;
    font-weight: 500;
}
.product-detail-img { flex: 1.2; text-align: center; overflow: hidden; }
.product-detail-img img { max-width: 520px; max-width: 100%; height: auto; }

/* 底部tab栏 */
.product-bottom-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 30px;
}
.product-arrows {
    display: flex;
    gap: 16px;
}
.arrow-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .2s;
    padding-bottom: 3px;
}
.arrow-btn:hover {
    background: var(--primary);
    color: var(--white);
}
.product-tabs {
    display: flex;
    gap: 40px;
    justify-content: flex-end;
}
.product-tab {
    font-size: 16px;
    color: var(--text-light);
    cursor: pointer;
    white-space: nowrap;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all .2s;
    opacity: 0;
    transform: translateY(20px);
}
.product-tab.animated {
    opacity: 1;
    transform: translateY(0);
    transition: all .5s ease;
}
.product-tab:hover {
    background: rgba(13, 124, 102, .08);
    color: var(--primary);
}
.product-tab.active {
    color: var(--primary);
    font-weight: 600;
    background: rgba(13, 124, 102, .15);
}

/* ============================================================
   Why choose us
   ============================================================ */
.why-us {
    background: #f7fbfa url('assets/wcu.jpg') center center no-repeat;
    background-size: contain;
    position: relative;
    padding: 90px 0;
}
.why-us .section-title-bar {
    margin-bottom: 16px;
}
.why-us h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}
.why-us .subtitle {
    color: var(--text-light);
    font-size: 16px;
}
.why-row {
    display: flex;
    gap: 60px;
    margin-top: 40px;
}
.why-us-left-space { flex: 1; }
.why-us-right {
    flex: 1;
    position: relative;
}
.why-highlight {
    position: absolute;
    left: -20px;
    right: -20px;
    height: 100px;
    background: linear-gradient(to right, rgba(13, 124, 102, 0) 0%, rgba(13, 124, 102, .1) 100%);
    border-radius: 8px;
    transition: top .3s ease;
    z-index: 0;
}
.why-item {
    display: flex;
    gap: 20px;
    padding-bottom: 36px;
    position: relative;
    cursor: pointer;
    z-index: 1;
    opacity: 0;
    transform: translateX(30px);
}
.why-item.animated {
    opacity: 1;
    transform: translateX(0);
    transition: all .5s ease;
}
.why-item::before {
    content: '';
    position: absolute;
    left: 22px;
    top: 48px;
    bottom: 0;
    width: 1px;
    border-left: 2px dashed #c5d8d2;
}
.why-item:last-child::before { display: none; }
.why-icon {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background .3s ease;
}
.why-icon svg {
    width: 22px;
    height: 22px;
    fill: var(--primary);
    transition: fill .3s ease;
}
.why-item h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
    transition: color .2s;
}
.why-item p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.8;
}
/* 悬停效果 */
.why-item:hover .why-icon {
    background: var(--primary);
}
.why-item:hover .why-icon svg {
    fill: var(--white);
}
.why-item:hover h4 {
    color: var(--primary);
}
/* 高亮选中项 */
.why-item.active .why-icon {
    background: var(--primary);
}
.why-item.active .why-icon svg {
    fill: var(--white);
}
.why-item.active h4 {
    color: var(--primary);
}
.why-item.active p {
    color: var(--text);
}

/* ============================================================
   Cooperation Model
   ============================================================ */
.cooperation {
    background: var(--white);
}
.coop-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 40px;
}
.coop-right {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.coop-card {
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: flex-end;
    cursor: pointer;
    opacity: 0;
    transform: translateY(30px);
}
.coop-card.animated {
    opacity: 1;
    transform: translateY(0);
    transition: all .6s ease;
}
.coop-card.large {
    min-height: 600px;
}
.coop-right .coop-card {
    flex: 1;
    min-height: 288px;
}
.coop-card img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.coop-card:hover img {
    transform: scale(1.05);
}
.coop-card .coop-overlay {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 40px 30px 30px;
    background: linear-gradient(to top, rgba(0,0,0,.75) 0%, rgba(0,0,0,.4) 60%, transparent 100%);
}
.coop-overlay h4 {
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}
.coop-overlay .overlay-bar {
    width: 30px;
    height: 3px;
    background: #fff;
    margin-bottom: 12px;
}
.coop-overlay p {
    color: rgba(255,255,255,.85);
    font-size: 14px;
    line-height: 1.7;
}
    background: linear-gradient(transparent, rgba(0,0,0,.6));
    color: var(--white);
}
.coop-card .coop-overlay h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}
.coop-card .coop-overlay p {
    font-size: 14px;
    line-height: 1.7;
    opacity: .9;
}
.coop-card.large { grid-row: span 1; }
.coop-right {
    display: grid;
    grid-template-rows: 1fr 1fr;
    gap: 24px;
}

/* ============================================================
   About Us
   ============================================================ */
.about-us {
    background: var(--bg-light) url('assets/aboutbj.jpg') center center no-repeat;
    position: relative;
    overflow: hidden;
}
.about-us .container {
    display: flex;
    align-items: center;
    gap: 80px;
}
.about-text { flex: 1; }
.about-text p.desc {
    color: var(--text-light);
    font-size: 15px;
    line-height: 2;
    margin: 24px 0 40px;
}
.about-stats {
    display: flex;
    gap: 50px;
    margin-bottom: 40px;
}
.stat h3 {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(13, 124, 102, .15);
    margin-bottom: 8px;
}
.stat h3 sup {
    font-size: 16px;
    font-weight: 400;
    vertical-align: super;
    margin-left: 2px;
}
.stat span {
    display: block;
    font-size: 13px;
    color: var(--text-light);
    margin-top: 4px;
}
.btn-solid {
    display: inline-block;
    padding: 14px 36px;
    background: var(--primary);
    border-radius: 30px;
    color: var(--white);
    font-size: 15px;
    font-weight: 500;
    transition: background .25s;
}
.btn-solid:hover { background: var(--primary-dark); }
.about-img {
    flex: 1;
    text-align: center;
}
.circle-decor {
    display: inline-block;
    padding: 5px;
    border-radius: 50%;
    background: linear-gradient(90deg, rgba(13, 124, 102, .5) 0%, rgba(13, 124, 102, 0) 55%);
    position: relative;
}
.aboutSwiper {
    width: 510px;
    height: 510px;
    border-radius: 50%;
    overflow: hidden;
    border: 16px solid #f7fbfa;
    display: block;
    cursor: pointer;
}
.aboutSwiper .swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ============================================================
   News
   ============================================================ */
.news {
    background: linear-gradient(to bottom, rgba(255,255,255,0) 0%, rgba(13, 124, 102, 0.07) 100%);
    padding: 90px 0;
}
.news-wrap {
    display: flex;
    gap: 60px;
    align-items: flex-start;
}
.news-left {
    flex: 0 0 350px;
}
.news-btns {
    display: flex;
    gap: 16px;
    margin-top: 30px;
}
.news-right {
    flex: 1;
    overflow: hidden;
}
.newsSwiper {
    width: 100%;
}
.newsSwiper .swiper-wrapper {
    align-items: stretch;
}
.newsSwiper .swiper-slide {
    width: calc(50% - 15px);
}
.news-item {
    display: block;
    padding: 20px;
    border-radius: 8px;
    text-decoration: none;
    color: inherit;
    transition: all .3s ease;
}
.news-item:hover {
    background: var(--primary);
}
.news-item:hover h4,
.news-item:hover p,
.news-item:hover .news-info,
.news-item:hover .news-info span {
    color: rgba(255,255,255,.9);
    border-color: rgba(255,255,255,.2);
}
.news-item .img-wrap {
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 16px;
}
.news-item img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    transition: transform .4s ease;
}
.news-item:hover img {
    transform: scale(1.05);
}
.news-item h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
    line-height: 1.4;
    transition: color .3s;
}
.news-item p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 16px;
    transition: color .3s;
}
.news-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid #eee;
    transition: all .3s;
}
.news-info span {
    color: var(--text-light);
    font-size: 13px;
}
.news-card h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
}
.news-card p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 16px;
}
.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.news-date { color: var(--text-light); font-size: 13px; }
.news-more { color: var(--primary); font-size: 14px; font-weight: 500; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,.85);
    padding: 60px 0 0;
    font-size: 14px;
}
.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255,255,255,.15);
}
.footer-logo img { height: 50px; }
.social-icons {
    display: flex;
    gap: 14px;
}
.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,.15);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .2s;
}
.social-icons a:hover { background: rgba(255,255,255,.3); }
.social-icons svg { width: 18px; height: 18px; fill: var(--white); }

.footer-cols {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr 1fr;
    gap: 30px;
    padding: 40px 0;
}
.footer-col h5 {
    color: var(--white);
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 18px;
}
.footer-col p { margin-bottom: 10px; line-height: 1.7; }
.footer-col a {
    display: block;
    color: rgba(255,255,255,.75);
    margin-bottom: 10px;
    transition: color .2s;
}
.footer-col a:hover { color: var(--white); }
.footer-col .label {
    color: var(--white);
    font-weight: 600;
    margin-top: 14px;
    margin-bottom: 4px;
}
.footer-col .label:first-child { margin-top: 0; }

.copyright {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,.1);
    color: rgba(255,255,255,.6);
    font-size: 13px;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 992px) {
    /* 移动端内页banner和首页一样导航浮在上面 */
    .page-banner {
        padding-top: 80px;
    }
    .about-banner {
        margin-top: 62px;
    }
    .about-banner h1 {
        font-size: 28px;
        margin-bottom: 8px;
    }
    .about-banner .page-breadcrumb {
        font-size: 13px;
    }
    /* 移动端banner用专属图，高度跟随图片 */
    .bannerSwiper {
        aspect-ratio: auto !important;
        height: auto !important;
    }
    .desktop-img { display: none !important; }
    .mobile-img { display: block !important; width: 100% !important; height: auto !important; }
    .banner-content {
        position: absolute;
        left: 40px;
        right: 40px;
        top: 18%;
        transform: none;
        width: auto;
    }
    .banner-content h1 {
        font-size: 22px;
        margin-bottom: 16px;
    }
    .banner-bg-text {
        font-size: 40px;
        top: -30px;
        letter-spacing: 4px;
    }
    .banner-divider {
        width: 40px;
        height: 3px;
        margin-bottom: 16px;
    }
    .banner-content p {
        font-size: 14px;
        margin-bottom: 24px;
        line-height: 1.6;
    }
    .banner-content p br {
        display: none;
    }
    .banner-btn {
        padding: 8px 20px;
        font-size: 13px;
    }
    /* 移动端：导航固定在顶部，高度紧凑 */
    .site-header {
        position: fixed;
        top: 0; left: 0; right: 0;
        background: #0a5a4a !important;
        padding: 8px 0;
        box-shadow: 0 2px 10px rgba(0,0,0,.15);
        z-index: 150;
    }
    .site-header:hover {
        background: #0a5a4a !important;
    }
    .site-logo { height: 100%; display: flex; align-items: center; }
    .site-logo img { height: 100%; max-height: 46px; width: auto; display: block; }
    /* 汉堡菜单打开时全屏覆盖 */
    .site-header .main-nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: #0a5a4a !important;
        z-index: 200;
        padding-top: 80px;
        width: 100%;
        height: 100vh;
    }
    .site-header .main-nav.open { display: block; }
    .site-header .main-nav ul {
        flex-direction: column;
        gap: 0;
        padding: 0 30px;
    }
    .site-header .main-nav a {
        display: block;
        padding: 18px 0;
        color: var(--white);
        font-size: 20px;
        font-weight: 500;
        border-bottom: 1px solid rgba(255,255,255,.15);
    }
    /* logo和图标永远在最上层，菜单打开时也可见 */
    .site-logo, .header-icons { position: relative; z-index: 201; }
    .site-header .header-icons svg { fill: var(--white); }
    .menu-toggle { display: flex; }
    .menu-toggle span { background: var(--white); }

    /* 移动端banner背景透明，不露条；顶部留出固定导航高度 */
    .hero-banner { background: transparent; margin-top: 54px; }

    .why-us { flex-direction: column; background: #f7fbfa; }
    .why-us-left-space { display: none; }
    .why-row { flex-direction: column; gap: 0; }
    .why-us-right { width: 100%; flex: none; padding: 0; }
    .why-highlight { display: none; }
    .why-item { padding-bottom: 30px; }
    .product-detail { flex-direction: column; gap: 30px; }
    .product-bottom-bar { flex-direction: column; gap: 20px; align-items: flex-start; }
    .product-tabs { display: none; }
    .coop-grid { grid-template-columns: 1fr; }
    .coop-right { gap: 16px; }
    .coop-card.large { min-height: 350px; }
    .news-wrap { flex-direction: column; gap: 30px; }
    .news-left { flex: none; }
    .news-btns { display: none; }
    .newsSwiper { overflow: visible !important; }
    .newsSwiper .swiper-wrapper { display: block !important; }
    .newsSwiper .swiper-slide { width: 100% !important; margin-bottom: 30px; }
    .newsSwiper .swiper-slide:nth-child(n+4) { display: none; }
    .news-item { padding: 0; }
    .footer-top { flex-direction: column; gap: 20px; text-align: center; }
    .footer-logo, .social-icons { justify-content: center; }
    .footer-cols { display: block; }
    .footer-col { display: none; text-align: center; }
    .footer-col:first-child { display: block; }
    .copyright .icp { display: none; }
    .circle-decor { padding: 5px; }
    .aboutSwiper { width: 320px; height: 320px; border-width: 8px; }
    .about-us .container { flex-direction: column; gap: 40px; }
}

/* ============================================================
   入场动画
   ============================================================ */
.animate-fade-up {
    opacity: 0;
    transform: translateY(80px);
    transition: opacity 1s ease, transform 1s ease;
}
.animate-fade-up.animated {
    opacity: 1;
    transform: translateY(0);
}