/* ========== 全局重置与基础变量 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", sans-serif;
}
ul,li { list-style: none; }
a { text-decoration: none; color: inherit; }
button { border: none; cursor: pointer; background: transparent; }

:root {
    --green-main: #00b96b;
    --gray-light: #f5f7fa;
    --gray-text: #666;
    --dark-text: #222;
    --white: #fff;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
}

/* 通用容器 全站统一 */
.container {
    width: 92%;
    max-width: 1400px;
    margin: 0 auto;
}

/* 通用标题 */
.section-title {
    text-align: center;
    margin-bottom: 60px;
}
.section-title h2 {
    font-size: 36px;
    color: var(--dark-text);
    margin-bottom: 12px;
}
.section-title p {
    color: var(--gray-text);
    font-size: 16px;
}
.section-title.flex-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
}

/* ========== 通用按钮样式 ========== */
.btn-green {
    background-color: var(--green-main);
    color: white;
    padding: 10px 24px;
    border-radius: 30px;
    font-size: 15px;
    transition: 0.3s;
}
.btn-green:hover {
    background: #00a05c;
}
.btn-green.big {
    padding: 14px 40px;
    font-size: 18px;
}

.btn-outline {
    border: 1px solid #ccc;
    padding: 9px 22px;
    border-radius: 30px;
    font-size: 15px;
    color: var(--dark-text);
    transition: 0.3s;
}
.btn-outline:hover {
    border-color: var(--green-main);
    color: var(--green-main);
}
.btn-outline.big {
    padding: 13px 38px;
    font-size: 18px;
}

.btn-play {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 17px;
    color: var(--dark-text);
    background: rgba(255,255,255,0.8);
    padding: 14px 36px;
    border-radius: 30px;
}

.link-more {
    color: var(--green-main);
    margin-top: 16px;
    display: inline-block;
}
.more-link-green {
    color: #009966;
    text-decoration: none;
    font-weight: 500;
}
.more-link-green:hover {
    color: #00774d;
}

/* ========== 顶部导航 ========== */
.header {
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.95);
    box-shadow: var(--shadow);
    z-index: 999;
}
.nav-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}
.nav-menu {
    display: flex;
    gap: 32px;
}
.nav-menu a {
    font-size: 15px;
    color: #444;
    position: relative;
}
.nav-menu a.active::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--green-main);
    bottom: -8px;
    left: 0;
}
.nav-btns {
    display: flex;
    gap: 16px;
}

/* ========== 首页首屏Banner ========== */
.banner {
    background: linear-gradient(130deg, rgba(232,240,245,0.86), rgba(217,230,239,0.4)), url("../images/banner/bg-main.png");
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    min-height: 90vh;
    padding: 80px 0;
    display: flex;
    align-items: center;
}
.banner-wrap {
    width: 100%;
}
.banner-text {
    max-width: 540px;
}
.banner-text h1 {
    font-size: 56px;
    color: var(--dark-text);
    margin-bottom: 16px;
}
.banner-text .sub-title {
    font-size: 22px;
    color: #333;
    margin-bottom: 24px;
}
.banner-text .desc {
    color: var(--gray-text);
    line-height: 1.8;
    font-size: 17px;
    margin-bottom: 36px;
}
.banner-btns {
    display: flex;
    gap: 24px;
    margin-bottom: 50px;
}

.data-row {
    display: flex;
    gap: 36px;
}
.data-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.data-item i {
    font-size: 24px;
    color: var(--green-main);
    margin-bottom: 8px;
}
.data-item .num {
    font-size: 28px;
    font-weight: bold;
    color: var(--dark-text);
}
.data-item .text {
    color: var(--gray-text);
    font-size: 14px;
}

/* ========== 首页：四层技术架构 ========== */
.tech-section {
    padding: 100px 0;
    background: var(--gray-light);
}
.tech-card-wrap {
    display: flex;
    align-items: stretch;
    gap: 16px;
}
.tech-card {
    flex: 1;
    background: white;
    padding: 32px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}
.card-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.card-head i {
    font-size: 24px;
    color: var(--green-main);
}
.card-head h3 {
    font-size: 18px;
}
.tech-card p {
    color: var(--gray-text);
    line-height: 1.6;
    margin-bottom: 20px;
}
.card-list li {
    padding: 6px 0;
    color: #444;
    font-size: 15px;
}
.arrow {
    display: flex;
    align-items: center;
    color: #999;
    font-size: 22px;
}

/* ========== 首页：核心平台产品 ========== */
.product-section {
    padding: 100px 0;
}
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.pro-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}
.pro-img {
    width: 100%;
    height: 180px;
}
.pro-card h4 {
    padding: 16px 20px 8px;
    font-size: 17px;
}
.pro-card p {
    padding: 0 20px 20px;
    color: var(--gray-text);
    font-size: 14px;
    line-height: 1.6;
}

/* ========== 首页：标杆案例 & 合作伙伴 ========== */
.case-section {
    padding: 100px 0;
    background: var(--gray-light);
}
.case-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
    margin-bottom: 80px;
}
.case-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}
.case-img {
    width: 100%;
    height: 140px;
}
.case-card h4 {
    padding: 14px 16px 4px;
}
.case-card p {
    padding: 0 16px 10px;
    font-size: 13px;
    color: var(--gray-text);
}
.case-data {
    display: flex;
    justify-content: space-between;
    padding: 0 16px 16px;
    color: var(--green-main);
    font-size: 14px;
}

.partner-logo-row {
    display: flex;
    gap: 24px;
    width: 100%;
}
.logo-item {
    flex: 1;
    background: #f7f9fc;
    padding: 24px 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    transition: 0.3s ease;
}
.logo-item:hover {
    box-shadow: 0 0 0 2px #009966;
}
.logo-item img {
    max-width: 90%;
    max-height: 70px;
    object-fit: contain;
}

/* ========== 首页：新闻动态 ========== */
.news-section {
    padding: 100px 0;
}
.news-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 26px;
}
.news-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}
.news-img {
    width: 100%;
    height: 160px;
}
.news-card .tag {
    display: inline-block;
    margin: 12px 16px 6px;
    padding: 3px 8px;
    background: #e6f7ef;
    color: var(--green-main);
    font-size: 12px;
    border-radius: 4px;
}
.news-card h4 {
    padding: 0 16px;
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 10px;
}
.news-card .date {
    padding: 0 16px;
    color: #999;
    font-size: 13px;
    margin-bottom: 12px;
}
.news-card .link-more {
    margin-left: 16px;
    font-size: 14px;
}

/* ========== 全站通用：CTA转化横幅（通栏） ========== */
.cta-banner {
    background: linear-gradient(130deg, #304759, #20303d);
    padding: 60px 0;
    width: 100%; /* 关键：铺满整个窗口宽度 */
    margin: 0; /* 关键：不要左右自动居中 */
}
.cta-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    width: 92%;
}
.cta-text h2 {
    color: white;
    font-size: 38px;
    margin-bottom: 12px;
}
.cta-text p {
    color: #c5d2dd;
    font-size: 18px;
}
.cta-btns {
    display: flex;
    gap: 18px;
    align-items: center;
}

/* ========== 全站通用：页脚（通栏） ========== */
.footer {
    background: #223340;
    color: #b0c2cf;
    padding: 80px 0 30px;
    width: 100%; /* 关键：铺满整个窗口宽度 */
    margin: 0; /* 关键：不要左右自动居中 */
}
.footer-wrap {
    display: grid;
    grid-template-columns: 220px repeat(6, 1fr) 240px;
    gap: 24px;
    margin-bottom: 50px;
}
.footer-logo p {
    line-height: 1.7;
    font-size: 14px;
    margin:16px 0 20px;
}
.social {
    display: flex;
    gap: 16px;
    font-size: 20px;
}
.footer-col h4 {
    color: white;
    margin-bottom: 20px;
    font-size: 16px;
}
.footer-col li {
    margin-bottom: 12px;
    font-size: 14px;
}
.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 14px;
}
.qr-box {
    margin-top: 20px;
    text-align: center;
}
.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #334452;
    font-size: 14px;
    color: #8899a6;
}

/* ========== 子页面通用：页面标题栏 ========== */
.page-header {
    background: var(--gray-light);
    padding: 60px 0;
    margin-bottom: 80px;
}
.page-header h1 {
    font-size: 36px;
    color: var(--dark-text);
    margin-bottom: 12px;
}
.page-header p {
    font-size: 16px;
    color: var(--gray-text);
}

/* ========== 关于光维页面 ========== */
.about-intro {
    margin-bottom: 80px;
}
.intro-wrap {
    display: flex;
    gap: 60px;
    align-items: center;
}
.intro-text {
    flex: 6;
}
.intro-text h2 {
    font-size: 28px;
    color: var(--dark-text);
    margin-bottom: 20px;
}
.intro-text p {
    font-size: 15px;
    color: var(--gray-text);
    line-height: 1.8;
    margin-bottom: 12px;
}
.intro-img {
    flex: 4;
}
.intro-img img {
    width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.about-advantage {
    padding-bottom: 80px;
}
.advantage-cards {
    display: flex;
    gap: 24px;
}
.advantage-card {
    flex: 1;
    background: #fff;
    padding: 40px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: 0.3s;
}
.advantage-card:hover {
    transform: translateY(-4px);
}
.advantage-card .card-icon {
    font-size: 32px;
    color: var(--green-main);
    margin-bottom: 16px;
}
.advantage-card h3 {
    font-size: 18px;
    color: var(--dark-text);
    margin-bottom: 8px;
}
.advantage-card p {
    font-size: 14px;
    color: var(--gray-text);
    line-height: 1.6;
}

/* ========== 解决方案页面 ========== */
.solution-list {
    padding-bottom: 80px;
}
.solution-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.solution-card {
    background: #fff;
    padding: 36px 32px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: 0.3s;
}
.solution-card:hover {
    transform: translateY(-4px);
}
.sol-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: #e6f7ef;
    color: var(--green-main);
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}
.solution-card h3 {
    font-size: 22px;
    color: var(--dark-text);
    margin-bottom: 12px;
}
.solution-card > p {
    color: var(--gray-text);
    line-height: 1.7;
    margin-bottom: 20px;
    font-size: 15px;
}
.sol-feature {
    margin-bottom: 28px;
}
.sol-feature li {
    padding: 6px 0;
    color: #444;
    font-size: 14px;
    padding-left: 20px;
    position: relative;
}
.sol-feature li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--green-main);
    font-weight: bold;
}

.solution-value {
    padding: 80px 0;
    background: var(--gray-light);
}
.value-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.value-item {
    background: #fff;
    padding: 32px 24px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
}
.value-item i {
    font-size: 30px;
    color: var(--green-main);
    margin-bottom: 16px;
}
.value-item h4 {
    font-size: 17px;
    color: var(--dark-text);
    margin-bottom: 8px;
}
.value-item p {
    font-size: 14px;
    color: var(--gray-text);
    line-height: 1.6;
}

/* ========== 下载中心页面 ========== */
.download-section {
    padding-bottom: 80px;
}
.download-group {
    margin-bottom: 60px;
}
.group-title {
    font-size: 24px;
    color: var(--dark-text);
    margin-bottom: 28px;
    padding-left: 12px;
    border-left: 4px solid var(--green-main);
}
.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.download-card {
    background: #fff;
    padding: 28px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    transition: 0.3s;
}
.download-card:hover {
    transform: translateY(-4px);
}
.dl-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background: #e6f7ef;
    color: var(--green-main);
    font-size: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}
.download-card h3 {
    font-size: 17px;
    color: var(--dark-text);
    margin-bottom: 10px;
    line-height: 1.5;
}
.download-card > p {
    font-size: 14px;
    color: var(--gray-text);
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}
.dl-meta {
    font-size: 13px;
    color: #999;
    margin-bottom: 16px;
}

/* ========== 联系我们页面 ========== */
.contact-section {
    padding-bottom: 100px;
}
.contact-wrap {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    justify-content: center;
}
.contact-info {
    background: #fff;
    padding: 40px 36px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 700px;
}
.contact-info h3 {
    font-size: 22px;
    color: var(--dark-text);
    margin-bottom: 28px;
}
.info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
    align-items: flex-start;
}
.info-item > i {
    font-size: 20px;
    color: var(--green-main);
    margin-top: 2px;
    width: 24px;
    text-align: center;
}
.info-item h4 {
    font-size: 16px;
    color: var(--dark-text);
    margin-bottom: 6px;
}
.info-item p {
    color: var(--gray-text);
    font-size: 14px;
    line-height: 1.6;
}
.qr-wrap {
    display: flex;
    gap: 24px;
    margin-top: 32px;
    padding-top: 28px;
    border-top: 1px solid #eee;
}
.qr-item {
    text-align: center;
    flex: 1;
}
.qr-item img {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    margin-bottom: 8px;
}
.qr-item span {
    font-size: 13px;
    color: var(--gray-text);
}

/* ========== 智能感知硬件页面 ========== */
.hardware-section {
    padding-bottom: 80px;
}
.hardware-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.hardware-card {
    background: #fff;
    padding: 32px 28px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: 0.3s;
}
.hardware-card:hover {
    transform: translateY(-4px);
}
.hw-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: #e6f7ef;
    color: var(--green-main);
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}
.hardware-card h3 {
    font-size: 20px;
    color: var(--dark-text);
    margin-bottom: 10px;
}
.hw-desc {
    color: var(--gray-text);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 16px;
}
.hw-spec li {
    padding: 5px 0;
    font-size: 13px;
    color: #555;
    padding-left: 18px;
    position: relative;
}
.hw-spec li::before {
    content: "·";
    position: absolute;
    left: 6px;
    color: var(--green-main);
    font-weight: bold;
    font-size: 18px;
    top: -2px;
}

.hardware-advantage {
    padding: 80px 0;
    background: var(--gray-light);
}
.advantage-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.adv-item {
    background: #fff;
    padding: 32px 24px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
}
.adv-item i {
    font-size: 28px;
    color: var(--green-main);
    margin-bottom: 16px;
}
.adv-item h4 {
    font-size: 17px;
    color: var(--dark-text);
    margin-bottom: 8px;
}
.adv-item p {
    font-size: 13px;
    color: var(--gray-text);
    line-height: 1.6;
}

/* ========== AI与MRV中台页面 ========== */
.platform-intro {
    margin-bottom: 80px;
}
.platform-modules {
    padding-bottom: 80px;
}
.module-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.module-card {
    background: #fff;
    padding: 32px 28px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: 0.3s;
}
.module-card:hover {
    transform: translateY(-4px);
}
.mod-icon {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    background: #e6f7ef;
    color: var(--green-main);
    font-size: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}
.module-card h3 {
    font-size: 19px;
    color: var(--dark-text);
    margin-bottom: 10px;
}
.module-card > p {
    font-size: 14px;
    color: var(--gray-text);
    line-height: 1.6;
    margin-bottom: 16px;
}
.mod-list li {
    padding: 5px 0;
    font-size: 13px;
    color: #555;
    padding-left: 18px;
    position: relative;
}
.mod-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--green-main);
    font-weight: bold;
}

.platform-value {
    padding: 80px 0;
    background: var(--gray-light);
}
.value-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.val-item {
    background: #fff;
    padding: 32px 24px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
}
.val-item i {
    font-size: 28px;
    color: var(--green-main);
    margin-bottom: 16px;
}
.val-item h4 {
    font-size: 17px;
    color: var(--dark-text);
    margin-bottom: 8px;
}
.val-item p {
    font-size: 13px;
    color: var(--gray-text);
    line-height: 1.6;
}

/* ========== 核心平台产品页面 ========== */
.platform-section {
    padding-bottom: 80px;
}
.platform-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.platform-card {
    background: #fff;
    padding: 28px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: 0.3s;
    display: flex;
    flex-direction: column;
}
.platform-card:hover {
    transform: translateY(-4px);
}
.plat-icon {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    background: #e6f7ef;
    color: var(--green-main);
    font-size: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}
.platform-card h3 {
    font-size: 18px;
    color: var(--dark-text);
    margin-bottom: 10px;
}
.platform-card > p {
    font-size: 14px;
    color: var(--gray-text);
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}
.plat-feature li {
    padding: 4px 0;
    font-size: 13px;
    color: #555;
    padding-left: 16px;
    position: relative;
}
.plat-feature li::before {
    content: "·";
    position: absolute;
    left: 6px;
    color: var(--green-main);
    font-weight: bold;
    font-size: 18px;
    top: -2px;
}

.platform-advantage {
    padding: 80px 0;
    background: var(--gray-light);
}
.adv-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

/* ========== 新闻详情页 ========== */
.news-detail-header {
    text-align: center;
}
.news-tag {
    display: inline-block;
    padding: 4px 14px;
    background: #e6f7ef;
    color: var(--green-main);
    font-size: 13px;
    border-radius: 4px;
    margin-bottom: 20px;
}
.news-detail-header h1 {
    font-size: 32px;
    color: var(--dark-text);
    line-height: 1.4;
    max-width: 900px;
    margin: 0 auto 20px;
}
.news-meta {
    color: var(--gray-text);
    font-size: 14px;
    display: flex;
    gap: 28px;
    justify-content: center;
    flex-wrap: wrap;
}
.news-meta i {
    margin-right: 6px;
    color: var(--green-main);
}

.detail-wrap {
    display: flex;
    gap: 40px;
    margin-bottom: 80px;
}
.detail-content {
    flex: 7;
    background: #fff;
    padding: 44px 50px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    line-height: 1.85;
    color: #333;
    font-size: 16px;
}
.detail-content p {
    margin-bottom: 20px;
    color: #444;
}
.detail-content h2 {
    font-size: 22px;
    color: var(--dark-text);
    margin: 38px 0 16px;
    padding-left: 12px;
    border-left: 4px solid var(--green-main);
}
.detail-content ul {
    margin-bottom: 20px;
    padding-left: 24px;
}
.detail-content li {
    list-style: disc;
    margin-bottom: 8px;
    color: #444;
}
.detail-img-box {
    margin: 28px 0;
    text-align: center;
}
.detail-img-box img {
    max-width: 100%;
    border-radius: 8px;
}
.detail-img-box .img-desc {
    font-size: 13px;
    color: #999;
    margin-top: 10px;
    text-align: center;
}

.detail-sidebar {
    flex: 3;
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.sidebar-box {
    background: #fff;
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}
.sidebar-box h4 {
    font-size: 18px;
    color: var(--dark-text);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--green-main);
    display: inline-block;
}
.related-news li {
    padding: 12px 0;
    border-bottom: 1px dashed #eee;
    font-size: 14px;
    line-height: 1.6;
    transition: 0.2s;
}
.related-news li:last-child {
    border-bottom: none;
}
.related-news li a:hover {
    color: var(--green-main);
}
.sidebar-cta {
    background: linear-gradient(135deg, #e6f7ef, #f0f9f4);
    padding: 28px 24px;
    border-radius: 12px;
    text-align: center;
}
.sidebar-cta h4 {
    font-size: 17px;
    color: var(--dark-text);
    margin-bottom: 10px;
}
.sidebar-cta p {
    font-size: 14px;
    color: var(--gray-text);
    margin-bottom: 18px;
    line-height: 1.6;
}

/* ========== 响应式适配 ========== */
@media(max-width:1200px) {
    .product-grid { grid-template-columns: repeat(2,1fr); }
    .news-grid { grid-template-columns: repeat(2,1fr); }
    .case-grid { grid-template-columns: repeat(3,1fr); }
    .tech-card-wrap { flex-wrap: wrap; }
    .tech-card { flex: 1 1 45%; }
    .platform-grid { grid-template-columns: repeat(2,1fr); }
}

@media(max-width:992px) {
    .intro-wrap { flex-direction: column; gap: 40px; }
    .advantage-cards { flex-wrap: wrap; }
    .advantage-card { flex: 1 1 45%; }
    .solution-cards { grid-template-columns: 1fr; }
    .value-grid { grid-template-columns: repeat(2,1fr); }
    .download-grid { grid-template-columns: repeat(2,1fr); }
    .hardware-grid { grid-template-columns: repeat(2,1fr); }
    .advantage-row { grid-template-columns: repeat(2,1fr); }
    .module-grid { grid-template-columns: repeat(2,1fr); }
    .value-row { grid-template-columns: repeat(2,1fr); }
    .adv-grid { grid-template-columns: repeat(2,1fr); }
    .detail-wrap { flex-direction: column; }

    .partner-logo-row { flex-wrap: wrap; row-gap: 20px; }
    .logo-item { flex: 0 1 calc(33.333% - 14px); }
}

@media(max-width:768px) {
    .nav-menu { display: none; }
    .product-grid, .news-grid { grid-template-columns: 1fr; }
    .case-grid { grid-template-columns: repeat(2,1fr); }
    .footer-wrap { grid-template-columns: repeat(2,1fr); }
    .banner-text h1 { font-size: 36px; }
    .advantage-card { flex: 1 1 100%; }
    .page-header h1 { font-size: 28px; }
    .value-grid { grid-template-columns: 1fr; }
    .download-grid { grid-template-columns: 1fr; }
    .qr-wrap { flex-direction: column; align-items: center; }
    .hardware-grid, .advantage-row { grid-template-columns: 1fr; }
    .module-grid, .value-row { grid-template-columns: 1fr; }
    .platform-grid, .adv-grid { grid-template-columns: 1fr; }
    .news-detail-header h1 { font-size: 26px; }
    .detail-content { padding: 28px 24px; }

    .logo-item { flex: 0 1 calc(50% - 12px); }
}
/* 强制提升 CTA 按钮文字对比度 */
.cta-banner .cta-text h2,
.cta-banner .cta-text p {
    color: #ffffff !important;
}

.cta-banner .btn-outline.big {
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.35);
}