/* ========================================
   网站建设公司官网 - 全局样式
   咖啡潮流风 | 奶白 + 深棕 + 浅粉
   ======================================== */

:root {
    --cream-white: #FDF8F3;
    --deep-brown: #4A3728;
    --light-pink: #E8C4C4;
    --coffee-brown: #6B4423;
    --mocha: #8B5A2B;
    --latte: #C9A88B;
    --caramel: #D4A574;
    --espresso: #2C1810;
    --shadow-soft: rgba(74, 55, 40, 0.08);
    --shadow-medium: rgba(74, 55, 40, 0.15);
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--cream-white);
    color: var(--deep-brown);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   顶部导航栏
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: var(--transition-smooth);
    padding: 20px 0;
}

.header.scrolled {
    background: rgba(253, 248, 243, 0.98);
    box-shadow: 0 2px 20px var(--shadow-soft);
    padding: 15px 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: 28px;
    font-weight: 700;
    color: var(--deep-brown);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    gap: 40px;
}

.nav-link {
    font-size: 16px;
    font-weight: 500;
    color: var(--deep-brown);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--coffee-brown), var(--mocha));
    transition: var(--transition-smooth);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--coffee-brown);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--deep-brown);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

/* ========================================
   全屏 Banner
   ======================================== */
.banner {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--cream-white) 0%, var(--light-pink) 50%, var(--latte) 100%);
}

.banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15;
}

.banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 20px;
}

.banner-title {
    font-size: clamp(42px, 6vw, 72px);
    font-weight: 800;
    color: var(--espresso);
    margin-bottom: 24px;
    line-height: 1.2;
    animation: fadeInUp 1s ease-out;
}

.banner-subtitle {
    font-size: clamp(18px, 2.5vw, 24px);
    color: var(--coffee-brown);
    margin-bottom: 40px;
    animation: fadeInUp 1s ease-out 0.3s both;
}

.banner-btn {
    display: inline-block;
    padding: 18px 48px;
    background: linear-gradient(135deg, var(--coffee-brown), var(--mocha));
    color: var(--cream-white);
    font-size: 18px;
    font-weight: 600;
    border-radius: 50px;
    box-shadow: 0 10px 30px var(--shadow-medium);
    animation: fadeInUp 1s ease-out 0.6s both;
}

.banner-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px var(--shadow-medium);
}

/* ========================================
   磁贴式瀑布流布局
   ======================================== */
.masonry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    grid-auto-flow: dense;
    gap: 24px;
    padding: 80px 0;
}

.masonry-item {
    background: var(--cream-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 30px var(--shadow-soft);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.masonry-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 50px var(--shadow-medium);
}

.masonry-item.short {
    grid-column: span 1;
    grid-row: span 1;
}

.masonry-item.medium {
    grid-column: span 1;
    grid-row: span 2;
}

.masonry-item.tall {
    grid-column: span 1;
    grid-row: span 3;
}

.masonry-item.wide {
    grid-column: span 2;
    grid-row: span 1;
}

.masonry-content {
    padding: 30px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.masonry-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 20px;
    flex-shrink: 0;
}

.masonry-item.short .masonry-image {
    height: 180px;
}

.masonry-item.tall .masonry-image {
    height: 260px;
}

.masonry-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--espresso);
    margin-bottom: 12px;
    flex-shrink: 0;
}

.masonry-desc {
    font-size: 15px;
    color: var(--coffee-brown);
    line-height: 1.8;
    flex-grow: 1;
    margin-bottom: 16px;
}

.masonry-item.short .masonry-desc {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.masonry-item.tall .masonry-desc {
    display: -webkit-box;
    -webkit-line-clamp: 6;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========================================
   核心优势板块
   ======================================== */
.advantages {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--cream-white), var(--light-pink));
}

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

.section-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    color: var(--espresso);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--coffee-brown);
    max-width: 700px;
    margin: 0 auto;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.advantage-card {
    background: var(--cream-white);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 30px var(--shadow-soft);
    transition: var(--transition-smooth);
    border: 2px solid transparent;
}

.advantage-card:hover {
    border-color: var(--light-pink);
    transform: translateY(-5px);
}

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

.advantage-icon img {
    width: 45px;
    height: 45px;
}

.advantage-card h3 {
    font-size: 20px;
    color: var(--espresso);
    margin-bottom: 12px;
}

.advantage-card p {
    font-size: 15px;
    color: var(--coffee-brown);
    line-height: 1.7;
}

/* ========================================
   快速入口
   ======================================== */
.quick-access {
    padding: 100px 0;
    background: var(--deep-brown);
}

.quick-access .section-title,
.quick-access .section-subtitle {
    color: var(--cream-white);
}

.access-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 50px;
}

.access-card {
    background: rgba(253, 248, 243, 0.08);
    padding: 35px 25px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid rgba(253, 248, 243, 0.15);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.access-card:hover {
    background: rgba(253, 248, 243, 0.15);
    transform: scale(1.05);
}

.access-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
    background: var(--light-pink);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.access-icon img {
    width: 32px;
    height: 32px;
}

.access-card h4 {
    font-size: 18px;
    color: var(--cream-white);
    margin-bottom: 8px;
}

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

/* ========================================
   资讯列表
   ======================================== */
.news-section {
    padding: 100px 0;
    background: var(--cream-white);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.news-card {
    background: var(--cream-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 6px 25px var(--shadow-soft);
    transition: var(--transition-smooth);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px var(--shadow-medium);
}

.news-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-content {
    padding: 24px;
}

.news-date {
    font-size: 14px;
    color: var(--latte);
    margin-bottom: 10px;
}

.news-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--espresso);
    margin-bottom: 12px;
    line-height: 1.5;
}

.news-excerpt {
    font-size: 15px;
    color: var(--coffee-brown);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--espresso);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 50px;
    margin-bottom: 60px;
}

.footer-logo {
    margin-bottom: 24px;
}

.footer-logo img {
    height: 50px;
}

.footer-about {
    color: var(--latte);
    line-height: 1.8;
    font-size: 15px;
}

.footer-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--cream-white);
    margin-bottom: 24px;
}

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

.footer-links a {
    color: var(--latte);
    font-size: 15px;
}

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

.footer-contact li {
    color: var(--latte);
    font-size: 15px;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-bottom {
    border-top: 1px solid rgba(253, 248, 243, 0.15);
    padding-top: 30px;
    text-align: center;
    color: var(--latte);
    font-size: 14px;
}

/* ========================================
   内页通用样式
   ======================================== */
.page-header {
    padding: 180px 0 80px;
    background: linear-gradient(135deg, var(--cream-white), var(--light-pink));
    text-align: center;
}

.page-title {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 800;
    color: var(--espresso);
    margin-bottom: 16px;
}

.page-subtitle {
    font-size: 18px;
    color: var(--coffee-brown);
    max-width: 600px;
    margin: 0 auto;
}

.page-content {
    padding: 80px 0;
}

/* ========================================
   服务详情页
   ======================================== */
.service-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.service-detail.reverse {
    direction: rtl;
}

.service-detail.reverse > * {
    direction: ltr;
}

.service-detail-img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 15px 50px var(--shadow-medium);
}

.service-detail-content h2 {
    font-size: 32px;
    color: var(--espresso);
    margin-bottom: 20px;
}

.service-detail-content p {
    font-size: 16px;
    color: var(--coffee-brown);
    line-height: 1.9;
    margin-bottom: 24px;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    color: var(--deep-brown);
}

.feature-check {
    width: 20px;
    height: 20px;
    background: var(--coffee-brown);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cream-white);
    font-size: 12px;
}

/* ========================================
   案例展示页
   ======================================== */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.case-card {
    background: var(--cream-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 30px var(--shadow-soft);
    transition: var(--transition-smooth);
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px var(--shadow-medium);
}

.case-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.case-content {
    padding: 28px;
}

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

.case-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--espresso);
    margin-bottom: 12px;
}

.case-desc {
    font-size: 15px;
    color: var(--coffee-brown);
    line-height: 1.7;
    margin-bottom: 20px;
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--coffee-brown);
    font-weight: 600;
    font-size: 15px;
}

.case-link:hover {
    color: var(--mocha);
}

/* ========================================
   团队介绍页
   ======================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 35px;
}

.team-card {
    text-align: center;
    background: var(--cream-white);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 8px 30px var(--shadow-soft);
    transition: var(--transition-smooth);
}

.team-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 50px var(--shadow-medium);
}

.team-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 24px;
    border: 4px solid var(--light-pink);
}

.team-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--espresso);
    margin-bottom: 8px;
}

.team-position {
    font-size: 15px;
    color: var(--latte);
    margin-bottom: 16px;
}

.team-desc {
    font-size: 15px;
    color: var(--coffee-brown);
    line-height: 1.7;
}

/* ========================================
   报价页面
   ======================================== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 35px;
}

.pricing-card {
    background: var(--cream-white);
    border-radius: 24px;
    padding: 50px 40px;
    text-align: center;
    box-shadow: 0 10px 40px var(--shadow-soft);
    transition: var(--transition-smooth);
    border: 3px solid transparent;
    position: relative;
    overflow: hidden;
}

.pricing-card:hover {
    transform: translateY(-10px);
    border-color: var(--light-pink);
}

.pricing-card.featured {
    border-color: var(--coffee-brown);
    background: linear-gradient(180deg, var(--light-pink), var(--cream-white));
}

.pricing-badge {
    position: absolute;
    top: 20px;
    right: -35px;
    background: var(--coffee-brown);
    color: var(--cream-white);
    padding: 6px 40px;
    font-size: 13px;
    font-weight: 600;
    transform: rotate(45deg);
}

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

.pricing-icon img {
    width: 45px;
    height: 45px;
}

.pricing-name {
    font-size: 26px;
    font-weight: 800;
    color: var(--espresso);
    margin-bottom: 12px;
}

.pricing-price {
    font-size: 42px;
    font-weight: 800;
    color: var(--coffee-brown);
    margin-bottom: 30px;
}

.pricing-price span {
    font-size: 16px;
    font-weight: 400;
    color: var(--latte);
}

.pricing-features {
    text-align: left;
    margin-bottom: 35px;
}

.pricing-features li {
    padding: 12px 0;
    border-bottom: 1px dashed var(--light-pink);
    font-size: 15px;
    color: var(--deep-brown);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-btn {
    display: inline-block;
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--coffee-brown), var(--mocha));
    color: var(--cream-white);
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
    transition: var(--transition-smooth);
}

.pricing-btn:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 25px var(--shadow-medium);
}

/* ========================================
   联系页面
   ======================================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    background: linear-gradient(135deg, var(--deep-brown), var(--espresso));
    padding: 50px;
    border-radius: 24px;
    color: var(--cream-white);
}

.contact-info h3 {
    font-size: 28px;
    margin-bottom: 24px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    background: var(--light-pink);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info-icon img {
    width: 26px;
    height: 26px;
}

.contact-form {
    background: var(--cream-white);
    padding: 50px;
    border-radius: 24px;
    box-shadow: 0 10px 40px var(--shadow-soft);
}

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

.form-group label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--deep-brown);
    margin-bottom: 10px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--light-pink);
    border-radius: 12px;
    font-size: 15px;
    font-family: inherit;
    color: var(--deep-brown);
    background: var(--cream-white);
    transition: var(--transition-smooth);
}

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

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.submit-btn {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, var(--coffee-brown), var(--mocha));
    color: var(--cream-white);
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px var(--shadow-medium);
}

/* ========================================
   新闻详情页
   ======================================== */
.article-main {
    max-width: 900px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 40px;
    text-align: center;
}

.article-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    color: var(--espresso);
    margin-bottom: 20px;
    line-height: 1.3;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    color: var(--latte);
    font-size: 15px;
}

.article-cover {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 20px;
    margin-bottom: 40px;
    box-shadow: 0 15px 50px var(--shadow-medium);
}

.article-body {
    font-size: 17px;
    line-height: 2;
    color: var(--deep-brown);
}

.article-body p {
    margin-bottom: 24px;
}

.article-body img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 16px;
    margin: 30px 0;
}

.article-related {
    margin-top: 80px;
    padding-top: 60px;
    border-top: 2px solid var(--light-pink);
}

.related-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--espresso);
    margin-bottom: 30px;
    text-align: center;
}

/* ========================================
   动画效果
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .masonry-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
    
    .service-detail {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .service-detail.reverse {
        direction: ltr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 350px;
        height: 100vh;
        background: var(--cream-white);
        flex-direction: column;
        padding: 100px 40px;
        gap: 25px;
        box-shadow: -5px 0 30px var(--shadow-medium);
        transition: var(--transition-smooth);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .hamburger {
        display: flex;
        z-index: 1001;
    }
    
    .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);
    }
    
    .masonry-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid,
    .access-grid,
    .case-grid,
    .team-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .service-features {
        grid-template-columns: 1fr;
    }
    
    .banner-title {
        font-size: 36px;
    }
    
    .banner-subtitle {
        font-size: 16px;
    }
    
    .page-header {
        padding: 140px 0 60px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .masonry-content,
    .news-content,
    .case-content,
    .team-card,
    .pricing-card,
    .contact-form,
    .contact-info {
        padding: 25px 20px;
    }
    
    .footer-grid {
        gap: 35px;
    }
}