/* ========================================
   北京尧图网络科技有限公司 - 全局样式
   甜品复古风：浅棕 + 奶白 + 浅黄
   ======================================== */

:root {
    --color-cream: #FFF8F0;
    --color-beige: #F5E6D3;
    --color-brown-light: #D4A574;
    --color-brown: #A67B5B;
    --color-brown-dark: #8B5A2B;
    --color-yellow: #FFE8A8;
    --color-text: #5D4E37;
    --color-text-light: #8B7355;
    --shadow-soft: 0 4px 20px rgba(139, 90, 43, 0.1);
    --shadow-medium: 0 8px 30px rgba(139, 90, 43, 0.15);
    --shadow-strong: 0 12px 40px rgba(139, 90, 43, 0.2);
    --radius-small: 8px;
    --radius-medium: 16px;
    --radius-large: 24px;
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-cream);
    color: var(--color-text);
    line-height: 1.8;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

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

/* ========================================
   导航栏样式
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: var(--transition-medium);
}

.header.scrolled {
    background: rgba(255, 248, 240, 0.98);
    box-shadow: var(--shadow-soft);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    max-width: 1600px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

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

.logo-sub {
    font-size: 12px;
    color: var(--color-brown);
    letter-spacing: 1px;
}

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

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 12px 24px;
    font-size: 15px;
    color: var(--color-text);
    border-radius: var(--radius-small);
    transition: var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    background: var(--color-brown-light);
    color: var(--color-cream);
    transform: translateY(-2px);
}

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

.nav-hamburger span {
    width: 30px;
    height: 3px;
    background: var(--color-brown-dark);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ========================================
   页脚样式
   ======================================== */
.footer {
    background: var(--color-brown-dark);
    color: var(--color-cream);
    padding: 60px 0 30px;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 50px;
    margin-bottom: 50px;
}

.footer-section h4 {
    font-size: 20px;
    margin-bottom: 25px;
    color: var(--color-yellow);
    position: relative;
    padding-bottom: 12px;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--color-brown-light);
}

.footer-links li {
    margin-bottom: 15px;
}

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

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

.footer-contact p {
    margin-bottom: 15px;
    font-size: 15px;
    color: var(--color-beige);
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 248, 240, 0.2);
    padding-top: 30px;
    text-align: center;
    font-size: 14px;
    color: var(--color-beige);
}

/* ========================================
   通用组件样式
   ======================================== */
.section {
    padding: 100px 0;
}

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

.section-title h2 {
    font-size: 42px;
    color: var(--color-brown-dark);
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-brown-light), var(--color-brown));
    border-radius: 2px;
}

.section-title p {
    font-size: 18px;
    color: var(--color-text-light);
    max-width: 700px;
    margin: 30px auto 0;
}

.btn {
    display: inline-block;
    padding: 16px 40px;
    background: var(--color-brown);
    color: var(--color-cream);
    border-radius: var(--radius-small);
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition-fast);
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: var(--color-brown-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

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

.btn-outline:hover {
    background: var(--color-brown);
    color: var(--color-cream);
}

.card {
    background: var(--color-cream);
    border-radius: var(--radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-medium);
}

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

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

.card-content {
    padding: 30px;
}

.card-title {
    font-size: 22px;
    color: var(--color-brown-dark);
    margin-bottom: 15px;
}

.card-text {
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

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

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

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1200px) {
    .nav-link {
        padding: 12px 18px;
        font-size: 14px;
    }
    
    .container {
        padding: 0 30px;
    }
}

@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--color-cream);
        flex-direction: column;
        padding: 100px 30px 30px;
        gap: 10px;
        transition: var(--transition-medium);
        box-shadow: var(--shadow-strong);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-hamburger {
        display: flex;
    }
    
    .section {
        padding: 80px 0;
    }
    
    .section-title h2 {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 15px 20px;
    }
    
    .logo-text {
        font-size: 20px;
    }
    
    .logo img {
        width: 50px;
        height: 50px;
    }
    
    .container {
        padding: 0 20px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title h2 {
        font-size: 30px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 480px) {
    .btn {
        padding: 14px 30px;
        font-size: 15px;
    }
    
    .card-content {
        padding: 20px;
    }
    
    .card-title {
        font-size: 20px;
    }
}

/* ========================================
   页面头部样式
   ======================================== */
.page-header {
    position: relative;
    height: 600px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 80px;
}

.page-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

.page-header::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(101, 67, 33, 0.7), rgba(160, 82, 45, 0.5));
    z-index: 0;
}

.page-header-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #FFF8F0;
    max-width: 900px;
    padding: 0 20px;
}

.page-header-content h1 {
    font-size: 56px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.page-header-content p {
    font-size: 24px;
    opacity: 0.95;
}

/* ========================================
   服务详情页面样式
   ======================================== */
.service-detail-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start;
}

.service-detail-content h2 {
    font-size: 36px;
    color: var(--color-brown-dark);
    margin-bottom: 30px;
}

.service-detail-content h3 {
    font-size: 28px;
    color: var(--color-brown);
    margin-bottom: 20px;
}

.service-detail-content p {
    font-size: 17px;
    line-height: 2;
    margin-bottom: 20px;
}

.sidebar-card {
    background: var(--color-beige);
    border-radius: var(--radius-medium);
    padding: 30px;
    box-shadow: var(--shadow-soft);
}

.sidebar-card h4 {
    font-size: 22px;
    color: var(--color-brown-dark);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--color-brown-light);
}

.process-list {
    counter-reset: process;
}

.process-list li {
    position: relative;
    padding-left: 40px;
    margin-bottom: 15px;
    font-size: 16px;
    color: var(--color-text);
}

.process-list li::before {
    counter-increment: process;
    content: counter(process);
    position: absolute;
    left: 0;
    top: 0;
    width: 30px;
    height: 30px;
    background: var(--color-brown);
    color: var(--color-cream);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
}

/* ========================================
   案例详情样式
   ======================================== */
.case-detail-hero {
    position: relative;
    height: 500px;
    overflow: hidden;
    margin-top: 80px;
}

.case-detail-hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-detail-info {
    padding: 60px 0;
}

.case-meta {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    margin-bottom: 40px;
    padding: 30px;
    background: var(--color-beige);
    border-radius: var(--radius-medium);
}

.case-meta-item {
    flex: 1;
    min-width: 200px;
}

.case-meta-label {
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 8px;
}

.case-meta-value {
    font-size: 18px;
    font-weight: bold;
    color: var(--color-brown-dark);
}

.case-challenge,
.case-solution,
.case-results {
    margin-bottom: 40px;
}

.case-challenge h3,
.case-solution h3,
.case-results h3 {
    font-size: 26px;
    color: var(--color-brown-dark);
    margin-bottom: 20px;
}

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

.result-item {
    text-align: center;
    padding: 30px;
    background: var(--color-beige);
    border-radius: var(--radius-medium);
}

.result-number {
    font-size: 48px;
    font-weight: bold;
    color: var(--color-brown);
    margin-bottom: 10px;
}

.result-label {
    font-size: 16px;
    color: var(--color-text-light);
}

/* ========================================
   团队页面样式
   ======================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 40px;
}

.team-member {
    background: var(--color-white, #fff);
    border-radius: var(--radius-medium);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-medium);
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-strong);
}

.team-member-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    background: var(--color-beige);
}

.team-member-info {
    padding: 25px;
}

.team-member-name {
    font-size: 22px;
    color: var(--color-brown-dark);
    margin-bottom: 8px;
}

.team-member-role {
    font-size: 15px;
    color: var(--color-brown);
    margin-bottom: 15px;
}

.team-member-bio {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ========================================
   价格页面样式
   ======================================== */
.price-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 40px;
}

.price-card {
    background: var(--color-white, #fff);
    border-radius: var(--radius-large);
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow-medium);
    transition: var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.price-card.featured {
    transform: scale(1.05);
    border: 3px solid var(--color-brown);
}

.price-card.featured::before {
    content: '热门推荐';
    position: absolute;
    top: 20px;
    right: -35px;
    background: var(--color-brown);
    color: var(--color-cream);
    padding: 5px 40px;
    transform: rotate(45deg);
    font-size: 14px;
}

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

.price-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.price-name {
    font-size: 24px;
    color: var(--color-brown-dark);
    margin-bottom: 15px;
}

.price-amount {
    font-size: 48px;
    font-weight: bold;
    color: var(--color-brown);
    margin-bottom: 10px;
}

.price-period {
    font-size: 16px;
    color: var(--color-text-light);
    margin-bottom: 30px;
}

.price-features {
    text-align: left;
    margin-bottom: 30px;
}

.price-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-beige);
    font-size: 15px;
}

.price-features li::before {
    content: '✓';
    color: var(--color-brown);
    font-weight: bold;
    margin-right: 10px;
}

/* ========================================
   联系表单样式
   ======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-top: 40px;
}

.contact-form {
    background: var(--color-white, #fff);
    padding: 40px;
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-medium);
}

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

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: bold;
    color: var(--color-brown-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--color-beige);
    border-radius: var(--radius-small);
    font-size: 16px;
    transition: var(--transition-fast);
}

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

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

.contact-info-card {
    background: var(--color-beige);
    padding: 40px;
    border-radius: var(--radius-medium);
}

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

.contact-info-icon {
    font-size: 32px;
    min-width: 40px;
}

.contact-info-text h4 {
    font-size: 18px;
    color: var(--color-brown-dark);
    margin-bottom: 5px;
}

.contact-info-text p {
    font-size: 16px;
    color: var(--color-text-light);
}

@media (max-width: 1024px) {
    .service-detail-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .case-detail-hero {
        height: 350px;
    }
    
    .team-grid,
    .price-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-header {
        height: 400px;
    }
    
    .page-header-content h1 {
        font-size: 36px;
    }
    
    .page-header-content p {
        font-size: 18px;
    }
    
    .team-grid,
    .price-grid {
        grid-template-columns: 1fr;
    }
    
    .price-card.featured {
        transform: scale(1);
    }
    
    .price-card.featured:hover {
        transform: translateY(-10px);
    }
}