/* 鲸玺信息科技（上海）有限公司 - 官方网站样式 */

/* ========== 基础变量 ========== */
:root {
    --primary-blue: #1a5fb4;
    --secondary-blue: #3584e4;
    --light-blue: #e8f4fc;
    --accent-orange: #ff6b35;
    --accent-yellow: #ffc107;
    --text-dark: #2d3436;
    --text-gray: #636e72;
    --text-light: #b2bec3;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

/* ========== 重置与基础 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    font-weight: bold;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-blue);
}

.logo-text span {
    color: var(--accent-orange);
}

.nav-menu {
    display: flex;
    gap: 35px;
}

.nav-menu a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
    padding: 5px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue));
    transition: var(--transition);
}

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

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 3px;
    transition: var(--transition);
}

/* ========== Banner区域 ========== */
.banner {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-blue) 0%, #0d3b7a 50%, var(--secondary-blue) 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 70px;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.banner .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.banner-content {
    color: white;
}

.banner-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 14px;
    margin-bottom: 25px;
    backdrop-filter: blur(10px);
}

.banner-tag span {
    color: var(--accent-yellow);
    font-weight: 600;
}

.banner-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.banner-title .highlight {
    color: var(--accent-yellow);
    position: relative;
}

.banner-slogan {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 25px;
    opacity: 0.95;
}

.banner-desc {
    font-size: 18px;
    opacity: 0.85;
    margin-bottom: 35px;
    max-width: 500px;
}

.banner-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-orange), #ff8c5a);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

.banner-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.banner-image {
    width: 100%;
    max-width: 500px;
    position: relative;
}

/* 马赛克装饰网格 */
.mosaic-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(5, 1fr);
    gap: 10px;
    width: 100%;
    aspect-ratio: 1;
}

.mosaic-item {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: var(--transition);
    animation: mosaicPulse 4s ease-in-out infinite;
}

.mosaic-item:nth-child(odd) {
    animation-delay: 0.5s;
}

.mosaic-item:nth-child(3n) {
    animation-delay: 1s;
}

.mosaic-item:nth-child(4n) {
    animation-delay: 1.5s;
}

.mosaic-item.accent {
    background: rgba(255, 255, 255, 0.18);
    color: rgba(255, 255, 255, 0.65);
    border-color: rgba(255, 255, 255, 0.22);
}

.mosaic-item:hover {
    background: rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
    transform: scale(1.08);
}

.mosaic-center {
    grid-column: 2 / 5;
    grid-row: 2 / 5;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.05));
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    z-index: 1;
}

.mosaic-center i {
    font-size: 70px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 15px;
}

.mosaic-center span {
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
}

@keyframes mosaicPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.float-item {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 15px 20px;
    backdrop-filter: blur(10px);
    animation: float 3s ease-in-out infinite;
}

.float-item:nth-child(1) {
    top: 10%;
    right: 0;
    animation-delay: 0s;
}

.float-item:nth-child(2) {
    bottom: 20%;
    left: -10%;
    animation-delay: 1s;
}

.float-item:nth-child(3) {
    top: 50%;
    right: -5%;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ========== 区块通用样式 ========== */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    background: var(--light-blue);
    color: var(--primary-blue);
    padding: 6px 18px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 15px;
}

.section-title {
    font-size: 38px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.section-desc {
    font-size: 17px;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ========== 业务板块 ========== */
.business-section {
    background: var(--bg-light);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.business-card {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.business-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue));
    transform: scaleX(0);
    transition: var(--transition);
}

.business-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.business-card:hover::before {
    transform: scaleX(1);
}

.business-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--light-blue), white);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 36px;
    color: var(--primary-blue);
}

.business-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.business-card p {
    font-size: 15px;
    color: var(--text-gray);
    line-height: 1.7;
}

/* ========== 产品展示 ========== */
.products-section {
    background: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid #f0f0f0;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.product-card.featured {
    border: 2px solid var(--primary-blue);
    position: relative;
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, var(--accent-orange), #ff8c5a);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.product-image {
    height: 200px;
    background: linear-gradient(135deg, var(--light-blue), #f0f7ff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: var(--primary-blue);
}

.product-content {
    padding: 25px;
}

.product-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.product-content p {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 14px;
}

.product-link:hover {
    gap: 10px;
    color: var(--secondary-blue);
}

/* ========== 快速联系 ========== */
.quick-contact {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    padding: 60px 0;
}

.quick-contact .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
}

.quick-contact-content h2 {
    color: white;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
}

.quick-contact-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 16px;
}

.quick-contact-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-contact {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: white;
    color: var(--primary-blue);
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-contact:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-contact.qq {
    background: #12b7f5;
    color: white;
}

.btn-contact.wechat {
    background: #07c160;
    color: white;
}

/* ========== 页脚 ========== */
.footer {
    background: #1a1a2e;
    color: white;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo-icon {
    background: linear-gradient(135deg, var(--secondary-blue), var(--primary-blue));
}

.footer-brand .logo-text {
    color: white;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
    color: white;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--secondary-blue);
    padding-left: 5px;
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    margin-bottom: 5px;
}

/* ========== 产品详情页样式 ========== */
.product-detail-section {
    padding-top: 120px;
    background: var(--bg-light);
    min-height: 100vh;
}

.product-hero {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    padding: 80px 0;
    margin-bottom: 60px;
}

.product-hero-content {
    text-align: center;
    color: white;
}

.product-hero-content h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 20px;
}

.product-hero-content p {
    font-size: 18px;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 80px;
}

.product-detail-image {
    background: white;
    border-radius: 20px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.product-detail-image .icon {
    font-size: 150px;
    color: var(--primary-blue);
}

.product-detail-content h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.product-detail-content > p {
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 30px;
    line-height: 1.8;
}

.feature-list {
    margin-bottom: 30px;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.feature-list .icon-check {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--accent-orange), #ff8c5a);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
    flex-shrink: 0;
}

.feature-list h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.feature-list p {
    font-size: 14px;
    color: var(--text-gray);
}

/* ========== 四问方法展示 ========== */
.method-section {
    background: white;
    padding: 80px 0;
}

.method-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.method-card {
    background: var(--bg-light);
    border-radius: 20px;
    padding: 35px 25px;
    text-align: center;
    transition: var(--transition);
    position: relative;
}

.method-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.method-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 20px;
}

.method-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.method-card p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* 素材选取详细说明 */
.method-detail {
    margin-top: 50px;
    background: var(--bg-light);
    border-radius: 20px;
    padding: 40px;
}

.method-detail-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.method-detail-title i {
    color: var(--accent-orange);
    font-size: 22px;
}

.method-detail-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 25px;
}

.method-detail-item {
    background: white;
    border-radius: 15px;
    padding: 25px;
    border-left: 4px solid var(--secondary-blue);
}

.method-detail-num {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: white;
    padding: 4px 14px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.method-detail-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.method-detail-item p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

.method-detail-summary {
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-blue);
    margin: 0;
}

/* ========== 其他产品列表 ========== */
.other-products {
    background: var(--bg-light);
    padding: 80px 0;
}

.other-products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.other-product-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.other-product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.other-product-card .icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--light-blue), white);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 32px;
    color: var(--primary-blue);
}

.other-product-card h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.other-product-card p {
    font-size: 13px;
    color: var(--text-gray);
}

/* ========== 商标展示 ========== */
.trademark-section {
    background: white;
    padding: 60px 0;
}

.trademark-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
}

.trademark-item {
    background: var(--bg-light);
    padding: 20px 35px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    border: 2px solid transparent;
    transition: var(--transition);
}

.trademark-item:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

/* ========== 服务页样式 ========== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.service-card-large {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    gap: 25px;
}

.service-card-large:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.service-icon-large {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: white;
    flex-shrink: 0;
}

.service-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.service-content p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 15px;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.service-tags span {
    background: var(--light-blue);
    color: var(--primary-blue);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 500;
}

/* ========== 关于我们页样式 ========== */
.about-hero {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    padding: 150px 0 80px;
    text-align: center;
    color: white;
}

.about-hero h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 20px;
}

.about-hero p {
    font-size: 18px;
    opacity: 0.9;
}

.about-content-section {
    padding: 80px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    background: linear-gradient(135deg, var(--light-blue), #f0f7ff);
    border-radius: 20px;
    padding: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-image .icon {
    font-size: 120px;
    color: var(--primary-blue);
}

.about-text h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.about-text p {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 20px;
}

.philosophy-box {
    background: linear-gradient(135deg, var(--light-blue), white);
    border-left: 4px solid var(--accent-orange);
    padding: 25px;
    border-radius: 0 15px 15px 0;
    margin: 30px 0;
}

.philosophy-box h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-orange);
    margin-bottom: 10px;
}

.philosophy-box p {
    font-size: 18px;
    color: var(--text-dark);
    font-weight: 600;
    margin: 0;
}

/* ========== 联系页样式 ========== */
.contact-section {
    padding-top: 120px;
    background: var(--bg-light);
    min-height: 100vh;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.contact-info-card h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--text-dark);
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #f0f0f0;
}

.contact-item:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--light-blue), white);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--primary-blue);
    flex-shrink: 0;
}

.contact-item.qq .contact-icon {
    background: linear-gradient(135deg, #e6f7ff, white);
    color: #12b7f5;
}

.contact-item.wechat .contact-icon {
    background: linear-gradient(135deg, #e6fff0, white);
    color: #07c160;
}

.contact-item.address .contact-icon {
    background: linear-gradient(135deg, #fff3e6, white);
    color: var(--accent-orange);
}

.contact-detail h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.contact-detail p {
    font-size: 15px;
    color: var(--text-gray);
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    padding: 10px 20px;
    background: var(--primary-blue);
    color: white;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.contact-btn:hover {
    background: var(--secondary-blue);
    transform: translateY(-2px);
}

.qr-placeholder {
    width: 150px;
    height: 150px;
    background: var(--bg-light);
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--text-light);
    margin-top: 10px;
}

.qr-placeholder i {
    font-size: 40px;
    color: var(--text-light);
    margin-bottom: 10px;
}

.qr-placeholder span {
    font-size: 12px;
    color: var(--text-gray);
}

/* 联系表单 */
.contact-form-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.contact-form-card h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--text-dark);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.btn-submit {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(26, 95, 180, 0.3);
}

/* 地图区域 */
.map-section {
    padding: 60px 0;
    background: white;
}

.map-container {
    height: 600px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid #e0e0e0;
}

@media (max-width: 768px) {
    .map-container {
        height: 400px;
    }
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* 微信二维码 */
.wechat-qr {
    width: 150px;
    height: 150px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-top: 10px;
    object-fit: cover;
}

/* 地图占位符（备用） */
.map-placeholder {
    height: 400px;
    background: linear-gradient(135deg, var(--light-blue), #f0f7ff);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--secondary-blue);
}

.map-placeholder i {
    font-size: 60px;
    color: var(--secondary-blue);
    margin-bottom: 20px;
}

.map-placeholder p {
    font-size: 18px;
    color: var(--text-gray);
}

/* ========== 产品下载页样式 ========== */
.download-section {
    padding: 80px 0;
}

.download-product-card {
    background: white;
    border-radius: 20px;
    padding: 50px;
    box-shadow: var(--shadow);
}

.download-section[style*="bg-light"] .download-product-card {
    background: white;
}

.download-product-header {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 50px;
    padding-bottom: 40px;
    border-bottom: 2px solid var(--bg-light);
}

.download-product-logo {
    flex-shrink: 0;
}

.download-product-logo img {
    width: 100px;
    height: 100px;
    border-radius: 20px;
    object-fit: contain;
}

.download-product-logo .logo-placeholder {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: white;
}

.download-product-info h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.download-product-info p {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.8;
    max-width: 700px;
}

.download-channels {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 25px;
}

.download-channel-item {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 30px 20px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.download-channel-item:hover {
    border-color: var(--primary-blue);
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.channel-icon {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 28px;
    color: white;
}

.channel-icon.h5 {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
}

.channel-icon.miniprogram {
    background: linear-gradient(135deg, #07c160, #06ad56);
}

.channel-icon.android {
    background: linear-gradient(135deg, #3ddc84, #2bb66a);
}

.channel-icon.ios {
    background: linear-gradient(135deg, #333, #555);
}

.channel-icon.harmonyos {
    background: linear-gradient(135deg, #e60012, #ff4d4d);
}

.download-channel-item h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.download-channel-item > p {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 18px;
    line-height: 1.5;
}

.download-btn {
    padding: 10px 22px;
    font-size: 14px;
    border-radius: 25px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.qr-code-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.qr-code-box img {
    width: 120px;
    height: 120px;
    border-radius: 10px;
    border: 2px solid #e8e8e8;
    background: white;
    padding: 4px;
}

.qr-code-box .qr-label {
    font-size: 12px;
    color: var(--text-light);
    font-weight: 500;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .banner .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .banner-content {
        order: 1;
    }
    
    .banner-visual {
        order: 0;
    }
    
    .banner-desc {
        margin: 0 auto 35px;
    }
    
    .banner-buttons {
        justify-content: center;
    }
    
    .business-grid,
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .method-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .method-detail-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-detail-grid,
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .download-channels {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .download-product-card {
        padding: 35px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 30px;
        gap: 20px;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .banner-title {
        font-size: 36px;
    }
    
    .banner-slogan {
        font-size: 22px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .business-grid,
    .products-grid,
    .other-products-grid {
        grid-template-columns: 1fr;
    }
    
    .method-grid {
        grid-template-columns: 1fr;
    }
    
    .method-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .method-detail {
        padding: 25px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand .logo {
        justify-content: center;
    }
    
    .quick-contact .container {
        flex-direction: column;
        text-align: center;
    }
    
    .service-card-large {
        flex-direction: column;
        text-align: center;
    }
    
    .service-icon-large {
        margin: 0 auto;
    }
    
    .service-tags {
        justify-content: center;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-icon {
        margin: 0 auto;
    }
    
    .qr-placeholder {
        margin: 10px auto 0;
    }
    
    .download-channels {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-product-header {
        flex-direction: column;
        text-align: center;
    }
    
    .download-product-card {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .banner-title {
        font-size: 28px;
    }
    
    .banner-slogan {
        font-size: 18px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .download-channels {
        grid-template-columns: 1fr;
    }
    
    .download-product-info h2 {
        font-size: 24px;
    }
}