/* ========================================
   福盛建站 - 全局样式文件
   清洁刷实用风 | 浅棕 + 纯白 + 浅灰
======================================== */

/* CSS Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: #4A4A4A;
    background-color: #FAFAFA;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul, ol {
    list-style: none;
}

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

/* 颜色变量 */
:root {
    --primary-brown: #8B7355;
    --light-brown: #D4C4B7;
    --pure-white: #FFFFFF;
    --light-gray: #F5F5F5;
    --medium-gray: #E0E0E0;
    --dark-gray: #666666;
    --text-dark: #333333;
    --text-light: #999999;
}

/* ========================================
   导航栏样式
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.12);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 45px;
    width: auto;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-brown);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    gap: 8px;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-dark);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-brown);
    background: var(--light-brown);
    background: rgba(212, 196, 183, 0.3);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-brown);
    transform: translateX(-50%);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-brown);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 移动端导航 */
@media (max-width: 1024px) {
    .nav-container {
        padding: 0 20px;
    }

    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--pure-white);
        flex-direction: column;
        padding: 40px 20px;
        gap: 4px;
        transition: left 0.4s ease;
        overflow-y: auto;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        padding: 16px 20px;
        font-size: 16px;
        border-bottom: 1px solid var(--medium-gray);
    }

    .nav-link::after {
        display: none;
    }
}

/* ========================================
   页脚样式
======================================== */
.footer {
    background: linear-gradient(135deg, #2C2C2C 0%, #1A1A1A 100%);
    color: var(--pure-white);
    padding: 80px 0 40px;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 60px;
    margin-bottom: 60px;
}

.footer-section h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--light-brown);
    position: relative;
    padding-bottom: 12px;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--light-brown);
}

.footer-section p {
    font-size: 14px;
    line-height: 2;
    color: #CCCCCC;
}

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

.footer-links a {
    font-size: 14px;
    color: #CCCCCC;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: var(--light-brown);
    padding-left: 8px;
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 14px;
    color: #CCCCCC;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.copyright {
    font-size: 14px;
    color: #999999;
}

.footer-nav {
    display: flex;
    gap: 24px;
}

.footer-nav a {
    font-size: 14px;
    color: #999999;
}

.footer-nav a:hover {
    color: var(--light-brown);
}

@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 576px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ========================================
   通用组件样式
======================================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.section {
    padding: 100px 0;
}

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

.section-title h2 {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-brown), var(--light-brown));
}

.section-title p {
    font-size: 16px;
    color: var(--dark-gray);
    max-width: 600px;
    margin: 24px auto 0;
    line-height: 1.8;
}

.btn {
    display: inline-block;
    padding: 14px 36px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: var(--primary-brown);
    color: var(--pure-white);
}

.btn-primary:hover {
    background: #6D5A43;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(139, 115, 85, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-brown);
    border: 2px solid var(--primary-brown);
}

.btn-secondary:hover {
    background: var(--primary-brown);
    color: var(--pure-white);
}

/* 卡片样式 */
.card {
    background: var(--pure-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.card-image {
    width: 100%;
    height: 240px;
    object-fit: cover;
}

.card-content {
    padding: 24px;
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.card-text {
    font-size: 14px;
    color: var(--dark-gray);
    line-height: 1.8;
    margin-bottom: 16px;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-light);
}

/* ========================================
   动画效果
======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.6s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* ========================================
   首页 Banner
======================================== */
.hero-banner {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #F5F0EB 0%, #E8E0D5 100%);
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
    background-image: url('../images/pattern.jpg');
    background-size: cover;
    background-position: center;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 40px;
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 24px;
    line-height: 1.2;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 22px;
    color: var(--dark-gray);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-image {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 50%;
    height: 70%;
    object-fit: cover;
    opacity: 0.8;
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
}

@media (max-width: 992px) {
    .hero-title {
        font-size: 42px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-image {
        display: none;
    }
}

/* ========================================
   网格错落布局
======================================== */
.grid-offset-layout {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    padding: 40px 0;
}

.grid-offset-layout .grid-item:nth-child(odd) {
    transform: translateY(40px);
}

.grid-offset-layout .grid-item:nth-child(even) {
    transform: translateY(-40px);
}

.grid-item {
    background: var(--pure-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
}

.grid-item:hover {
    transform: translateY(-10px) !important;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}

.grid-item-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
}

.grid-item-content {
    padding: 30px;
}

.grid-item-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.grid-item-text {
    font-size: 15px;
    color: var(--dark-gray);
    line-height: 1.8;
}

@media (max-width: 992px) {
    .grid-offset-layout {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-offset-layout .grid-item:nth-child(odd),
    .grid-offset-layout .grid-item:nth-child(even) {
        transform: translateY(0);
    }
}

@media (max-width: 576px) {
    .grid-offset-layout {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   服务板块
======================================== */
.services-section {
    background: linear-gradient(135deg, #FAFAFA 0%, #F0EBE5 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--pure-white);
    padding: 40px 24px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.4s ease;
    border: 2px solid transparent;
}

.service-card:hover {
    border-color: var(--light-brown);
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--light-brown) 0%, var(--primary-brown) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon img {
    width: 40px;
    height: 40px;
}

.service-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.service-desc {
    font-size: 14px;
    color: var(--dark-gray);
    line-height: 1.8;
}

@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   案例展示
======================================== */
.cases-section {
    background: var(--pure-white);
}

.cases-filter {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--dark-gray);
    background: var(--light-gray);
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-brown);
    color: var(--pure-white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.case-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
}

.case-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.case-card:hover .case-image {
    transform: scale(1.1);
}

.case-card:hover .case-overlay {
    transform: translateY(0);
}

.case-category {
    font-size: 13px;
    color: var(--light-brown);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.case-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--pure-white);
}

@media (max-width: 1200px) {
    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .cases-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   团队介绍
======================================== */
.team-section {
    background: linear-gradient(135deg, #F5F0EB 0%, #E8E0D5 100%);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.team-card {
    background: var(--pure-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    text-align: center;
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.team-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.team-info {
    padding: 24px;
}

.team-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.team-position {
    font-size: 14px;
    color: var(--primary-brown);
    margin-bottom: 12px;
}

.team-desc {
    font-size: 14px;
    color: var(--dark-gray);
    line-height: 1.8;
}

@media (max-width: 992px) {
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .team-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   新闻列表
======================================== */
.news-section {
    background: var(--pure-white);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.news-card {
    background: var(--pure-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.news-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.news-content {
    padding: 24px;
}

.news-date {
    font-size: 13px;
    color: var(--primary-brown);
    margin-bottom: 10px;
}

.news-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.5;
}

.news-excerpt {
    font-size: 14px;
    color: var(--dark-gray);
    line-height: 1.8;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-brown);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.news-link::after {
    content: '→';
    transition: transform 0.3s ease;
}

.news-link:hover::after {
    transform: translateX(4px);
}

@media (max-width: 992px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   内页 Banner
======================================== */
.page-banner {
    position: relative;
    height: 50vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #D4C4B7 0%, #8B7355 100%);
    margin-top: 80px;
}

.page-banner-content {
    text-align: center;
    color: var(--pure-white);
    z-index: 2;
}

.page-banner-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.page-banner-subtitle {
    font-size: 18px;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .page-banner {
        height: 40vh;
        min-height: 300px;
    }

    .page-banner-title {
        font-size: 32px;
    }

    .page-banner-subtitle {
        font-size: 16px;
    }
}

/* ========================================
   资讯列表页
======================================== */
.news-list-page {
    margin-top: 80px;
    min-height: calc(100vh - 400px);
}

.news-list-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 60px 40px;
}

.news-list-header {
    margin-bottom: 50px;
}

.news-list-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

@media (max-width: 992px) {
    .news-list-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .news-list-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   资讯详情页
======================================== */
.news-detail-page {
    margin-top: 80px;
    min-height: calc(100vh - 400px);
}

.news-detail-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 60px 40px;
}

.news-detail-header {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--light-gray);
}

.news-detail-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
    line-height: 1.4;
}

.news-detail-meta {
    display: flex;
    gap: 24px;
    color: var(--text-light);
    font-size: 14px;
}

.news-detail-image {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 40px;
}

.news-detail-content {
    font-size: 16px;
    line-height: 2;
    color: var(--text-dark);
}

.news-detail-content p {
    margin-bottom: 24px;
}

.news-detail-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 24px 0;
}

.related-news-section {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid var(--light-gray);
}

.related-news-section h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
    color: var(--text-dark);
}

@media (max-width: 768px) {
    .news-detail-title {
        font-size: 28px;
    }

    .news-detail-image {
        height: 300px;
    }
}

/* ========================================
   关于我们页
======================================== */
.about-section {
    background: var(--pure-white);
}

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

.about-image-wrapper {
    position: relative;
}

.about-image {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.about-image-accent {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 200px;
    height: 200px;
    background: var(--light-brown);
    border-radius: 12px;
    z-index: -1;
}

.about-content h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.about-content p {
    font-size: 16px;
    color: var(--dark-gray);
    line-height: 2;
    margin-bottom: 24px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 24px;
    background: var(--light-gray);
    border-radius: 8px;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-brown);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--dark-gray);
}

@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-image-accent {
        display: none;
    }
}

/* ========================================
   产品中心页
======================================== */
.products-section {
    background: linear-gradient(135deg, #FAFAFA 0%, #F0EBE5 100%);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.product-card {
    background: var(--pure-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.product-image {
    width: 100%;
    height: 260px;
    object-fit: cover;
}

.product-content {
    padding: 28px;
}

.product-category {
    font-size: 13px;
    color: var(--primary-brown);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.product-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.product-desc {
    font-size: 14px;
    color: var(--dark-gray);
    line-height: 1.8;
    margin-bottom: 20px;
}

.product-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-brown);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

@media (max-width: 992px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   解决方案页
======================================== */
.solutions-section {
    background: var(--pure-white);
}

.solution-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
    padding: 60px;
    background: var(--light-gray);
    border-radius: 16px;
}

.solution-card:nth-child(even) {
    direction: rtl;
}

.solution-card:nth-child(even) .solution-content {
    direction: ltr;
}

.solution-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 12px;
}

.solution-content h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.solution-content p {
    font-size: 16px;
    color: var(--dark-gray);
    line-height: 2;
    margin-bottom: 24px;
}

.solution-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--text-dark);
}

.feature-item::before {
    content: '✓';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--primary-brown);
    color: var(--pure-white);
    border-radius: 50%;
    font-size: 12px;
}

@media (max-width: 992px) {
    .solution-card {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 40px;
    }

    .solution-card:nth-child(even) {
        direction: ltr;
    }
}

@media (max-width: 576px) {
    .solution-features {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   联系我们页
======================================== */
.contact-section {
    background: linear-gradient(135deg, #F5F0EB 0%, #E8E0D5 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info-card {
    background: var(--pure-white);
    padding: 50px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.contact-info-card h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--light-brown);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon img {
    width: 24px;
    height: 24px;
}

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

.contact-text p {
    font-size: 14px;
    color: var(--dark-gray);
    line-height: 1.8;
}

.contact-form-card {
    background: var(--pure-white);
    padding: 50px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.contact-form-card h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 24px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-size: 15px;
    border: 2px solid var(--medium-gray);
    border-radius: 6px;
    transition: all 0.3s ease;
    font-family: inherit;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

@media (max-width: 992px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   快速入口板块
======================================== */
.quick-access-section {
    background: var(--pure-white);
    padding: 80px 0;
}

.quick-access-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.access-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 40px 24px;
    background: var(--light-gray);
    border-radius: 12px;
    transition: all 0.4s ease;
    cursor: pointer;
}

.access-card:hover {
    background: var(--primary-brown);
    transform: translateY(-8px);
}

.access-card:hover .access-title,
.access-card:hover .access-desc {
    color: var(--pure-white);
}

.access-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 20px;
    background: var(--pure-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.access-icon img {
    width: 35px;
    height: 35px;
}

.access-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
    transition: color 0.3s ease;
}

.access-desc {
    font-size: 14px;
    color: var(--dark-gray);
    line-height: 1.8;
    transition: color 0.3s ease;
}

@media (max-width: 992px) {
    .quick-access-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .quick-access-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   核心优势板块
======================================== */
.advantages-section {
    background: linear-gradient(135deg, #2C2C2C 0%, #1A1A1A 100%);
    color: var(--pure-white);
}

.advantages-section .section-title h2 {
    color: var(--pure-white);
}

.advantages-section .section-title p {
    color: #CCCCCC;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.advantage-card {
    text-align: center;
    padding: 40px 24px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.4s ease;
}

.advantage-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-8px);
    border-color: var(--light-brown);
}

.advantage-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--light-brown);
    margin-bottom: 16px;
    line-height: 1;
}

.advantage-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.advantage-desc {
    font-size: 14px;
    color: #CCCCCC;
    line-height: 1.8;
}

@media (max-width: 992px) {
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .advantages-grid {
        grid-template-columns: 1fr;
    }
}