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

:root {
    --navy: #07172f;
    --deep: #0b2347;
    --blue: #0b7cff;
    --cyan: #19c8ff;
    --gold: #f59e0b;
    --text: #1e293b;
    --gray: #64748b;
    --light: #f5f8fc;
    --border: #dbe5f1;
    --white: #ffffff;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    color: var(--text);
    line-height: 1.75;
    background: #ffffff;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
}

.container {
    width: 1200px;
    max-width: calc(100% - 32px);
    margin: 0 auto;
}

/* 顶部信息 */
.topbar {
    background: var(--navy);
    color: #cbd5e1;
    font-size: 13px;
    padding: 8px 0;
}

.topbar-inner {
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

/* 导航 */
.header {
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav {
    height: 86px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo img {
    width: 72px;
    height: 52px;
    object-fit: contain;
}

.logo-text strong {
    display: block;
    color: var(--deep);
    font-size: 22px;
    line-height: 1.2;
    letter-spacing: 1px;
}

.logo-text small {
    display: block;
    color: #64748b;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.menu a {
    font-size: 15px;
    font-weight: 700;
    color: var(--deep);
    position: relative;
}

.menu a:hover,
.menu a.active {
    color: var(--blue);
}

.menu a:not(.nav-btn)::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -10px;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--blue), var(--cyan));
    transition: 0.25s;
}

.menu a:hover::after,
.menu a.active::after {
    width: 100%;
}

.nav-btn {
    background: linear-gradient(135deg, var(--blue), var(--cyan));
    color: #fff !important;
    padding: 10px 20px;
    border-radius: 999px;
    box-shadow: 0 10px 24px rgba(11,124,255,0.25);
}

/* 首页大屏 */
.hero {
    min-height: 660px;
    background:
        linear-gradient(90deg, rgba(7,23,47,0.96), rgba(7,23,47,0.78), rgba(7,23,47,0.32)),
        url("../images/hero-industry.jpg") center/cover no-repeat;
    color: #ffffff;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(25,200,255,0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(25,200,255,0.08) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: linear-gradient(90deg, #000, transparent);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 760px;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #a5f3fc;
    border: 1px solid rgba(165,243,252,0.4);
    background: rgba(25,200,255,0.08);
    padding: 7px 16px;
    border-radius: 999px;
    font-size: 14px;
    margin-bottom: 22px;
}

.hero h1 {
    font-size: 56px;
    line-height: 1.18;
    margin-bottom: 24px;
    letter-spacing: 1px;
}

.hero h1 span {
    color: #72e6ff;
}

.hero p {
    font-size: 18px;
    color: #dbeafe;
    max-width: 720px;
    margin-bottom: 34px;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 38px;
}

.hero-tags span {
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.08);
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 14px;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.btn {
    display: inline-block;
    padding: 12px 26px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 15px;
    transition: 0.25s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue), var(--cyan));
    color: #fff;
    box-shadow: 0 12px 26px rgba(11,124,255,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 34px rgba(11,124,255,0.36);
}

.btn-line {
    color: #fff;
    border: 1px solid rgba(255,255,255,0.45);
}

.btn-line:hover {
    background: #fff;
    color: var(--deep);
}

/* 通用页面banner */
.page-banner {
    background:
        linear-gradient(90deg, rgba(7,23,47,0.96), rgba(11,124,255,0.68)),
        radial-gradient(circle at right top, rgba(25,200,255,0.5), transparent 35%);
    color: #ffffff;
    padding: 86px 0;
    position: relative;
    overflow: hidden;
}

.page-banner::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
    background-size: 38px 38px;
}

.page-banner .container {
    position: relative;
    z-index: 2;
}

.page-banner h1 {
    font-size: 42px;
    margin-bottom: 8px;
}

.page-banner p {
    color: #bfdbfe;
    letter-spacing: 3px;
}

/* 通用模块 */
.section {
    padding: 82px 0;
}

.section-light {
    background: var(--light);
}

.section-title {
    text-align: center;
    margin-bottom: 48px;
}

.section-title span {
    color: var(--blue);
    font-weight: 800;
    font-size: 13px;
    letter-spacing: 3px;
}

.section-title h2 {
    color: var(--deep);
    font-size: 36px;
    margin: 8px 0 12px;
}

.section-title p {
    color: var(--gray);
    font-size: 15px;
}

/* 信任数据 */
.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    margin-top: -54px;
    position: relative;
    z-index: 5;
}

.trust-card {
    background: #ffffff;
    border: 1px solid var(--border);
    box-shadow: 0 18px 40px rgba(15,39,71,0.1);
    border-radius: 14px;
    padding: 28px;
}

.trust-card strong {
    display: block;
    font-size: 34px;
    color: var(--blue);
    margin-bottom: 8px;
}

.trust-card span {
    color: var(--deep);
    font-weight: 700;
}

/* 关于简版 */
.about-home {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 52px;
    align-items: center;
}

.about-home h2 {
    color: var(--deep);
    font-size: 36px;
    margin-bottom: 20px;
}

.about-home p {
    color: var(--gray);
    margin-bottom: 14px;
}

.about-image {
    height: 420px;
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--border);
    background:
        linear-gradient(135deg, rgba(11,124,255,0.2), rgba(25,200,255,0.08)),
        #e8eef7;
    position: relative;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-weight: 700;
    letter-spacing: 2px;
    text-align: center;
    padding: 20px;
}

/* 产品分类 */
.category-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 22px;
}

.category-card {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: 0.3s;
    position: relative;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 44px rgba(15,39,71,0.13);
    border-color: var(--blue);
}

.category-img {
    height: 180px;
    background: #e8eef7;
    overflow: hidden;
}

.category-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.category-body {
    padding: 24px;
}

.category-body h3 {
    color: var(--deep);
    font-size: 22px;
    margin-bottom: 8px;
}

.category-body p {
    color: var(--gray);
    font-size: 14px;
    margin-bottom: 14px;
}

.more {
    color: var(--blue);
    font-weight: 800;
    font-size: 14px;
}

/* 产品中心大列表 */
.product-series {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.series-row {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 34px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 18px;
    overflow: hidden;
    transition: 0.3s;
}

.series-row:hover {
    transform: translateY(-6px);
    box-shadow: 0 22px 48px rgba(15,39,71,0.12);
    border-color: var(--blue);
}

.series-img {
    height: 300px;
    background: #e8eef7;
}

.series-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.series-body {
    padding: 34px 34px 34px 0;
}

.series-body h2 {
    color: var(--deep);
    font-size: 30px;
    margin-bottom: 10px;
}

.series-body p {
    color: var(--gray);
    margin-bottom: 18px;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 22px;
}

.tags span {
    color: var(--blue);
    background: #edf6ff;
    border: 1px solid #bfdbfe;
    border-radius: 999px;
    padding: 7px 13px;
    font-size: 13px;
    font-weight: 700;
}

/* 分类详情 */
.detail-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 36px;
}

.sidebar {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    height: fit-content;
    position: sticky;
    top: 110px;
}

.sidebar h3 {
    color: var(--deep);
    font-size: 22px;
    margin-bottom: 14px;
}

.sidebar a {
    display: block;
    padding: 13px 15px;
    background: #f7faff;
    border-radius: 9px;
    margin-bottom: 8px;
    color: var(--deep);
    font-weight: 700;
}

.sidebar a:hover,
.sidebar a.active {
    color: #ffffff;
    background: linear-gradient(135deg, var(--blue), var(--cyan));
}

.category-head {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 32px;
    margin-bottom: 32px;
}

.category-head h2 {
    color: var(--deep);
    font-size: 34px;
    margin-bottom: 12px;
}

.category-head p {
    color: var(--gray);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: 0.3s;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 42px rgba(15,39,71,0.12);
    border-color: var(--blue);
}

.product-img {
    height: 210px;
    background: #e8eef7;
    overflow: hidden;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-body {
    padding: 24px;
}

.product-body h3 {
    color: var(--deep);
    font-size: 21px;
    margin-bottom: 10px;
}

.product-body p {
    color: var(--gray);
    font-size: 14px;
}

/* 服务 */
.service-grid,
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.info-card {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px;
    transition: 0.25s;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 36px rgba(15,39,71,0.1);
    border-color: var(--blue);
}

.info-card h3 {
    color: var(--deep);
    font-size: 22px;
    margin-bottom: 12px;
}

.info-card p {
    color: var(--gray);
    font-size: 14px;
}

/* 联系 */
.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 34px;
}

.contact-card {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 32px;
}

.contact-card h3 {
    color: var(--deep);
    font-size: 26px;
    margin-bottom: 18px;
}

.contact-line {
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    color: var(--gray);
}

.contact-line strong {
    color: var(--deep);
    display: inline-block;
    width: 86px;
}

.form-row {
    margin-bottom: 16px;
}

.form-row label {
    display: block;
    color: var(--deep);
    font-weight: 800;
    margin-bottom: 7px;
}

.form-row input,
.form-row select,
.form-row textarea {
    width: 100%;
    border: 1px solid #cbd5e1;
    border-radius: 9px;
    padding: 12px;
    font-family: inherit;
}

.form-row textarea {
    height: 130px;
}

/* CTA */
.cta {
    background:
        linear-gradient(90deg, rgba(7,23,47,0.98), rgba(11,124,255,0.8)),
        radial-gradient(circle at right, rgba(25,200,255,0.5), transparent 40%);
    color: #ffffff;
    padding: 62px 0;
}

.cta-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
}

.cta h2 {
    font-size: 32px;
    margin-bottom: 8px;
}

.cta p {
    color: #dbeafe;
}

/* 底部 */
.footer-links {
    background: #07172f;
    color: #cbd5e1;
    padding: 50px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
    gap: 34px;
}

.footer-links h3 {
    color: #ffffff;
    margin-bottom: 15px;
}

.footer-links p,
.footer-links a {
    display: block;
    color: #cbd5e1;
    font-size: 14px;
    margin-bottom: 8px;
}

.footer-links a:hover {
    color: #ffffff;
}

.footer {
    background: #030d1d;
    color: #94a3b8;
    text-align: center;
    padding: 22px 0;
    font-size: 13px;
}

.float-contact {
    position: fixed;
    right: 22px;
    bottom: 82px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.float-contact a {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--blue), var(--cyan));
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    line-height: 1.25;
    font-size: 13px;
    box-shadow: 0 10px 28px rgba(11,124,255,0.35);
}

/* 响应式 */
@media (max-width: 1000px) {
    .topbar-inner,
    .nav,
    .cta-inner {
        flex-direction: column;
        height: auto;
        padding: 12px 0;
    }

    .menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .hero {
        min-height: 560px;
    }

    .hero h1 {
        font-size: 38px;
    }

    .trust-grid,
    .category-grid,
    .service-grid,
    .advantage-grid,
    .product-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .about-home,
    .series-row,
    .detail-layout,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .series-body {
        padding: 26px;
    }

    .sidebar {
        position: static;
    }
}

.pagination{
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.pagination a{
    padding: 3px 5px;
    border-radius: 5px;
    background-color: rgba(0,0,0,.05);
    margin: 0 3px;
    transition: all .3s;
}
.pagination a:hover{
    background-color: rgba(0,0,0,.1);
}
.pagination .page-num{
    background-color: transparent;
}
.pagination .page-num-current{
    padding:3px 10px;
    background: linear-gradient(135deg, var(--blue), var(--cyan));
    color: #fff;
}
.flex_message{
    display: flex;
    align-items: center;
}
.flex_message input{
    margin-right: 20px;
    width: 200px;
}
.pro_title{
    text-align: center;
}
.mb20{
    margin-bottom: 20px;
}
.mt20{
    margin-top: 40px;
}
.mb10{
    margin-bottom: 10px;
}