/* 全局样式 */
:root {
    --primary-color: #1a73e8;
    --secondary-color: #34a853;
    --accent-color: #ea4335;
    --text-color: #202124;
    --text-secondary: #5f6368;
    --background-color: #ffffff;
    --background-secondary: #f8f9fa;
    --border-color: #dadce0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --success-color: #34a853;
    --warning-color: #fbbc05;
    --error-color: #ea4335;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--background-color);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

a:hover {
    color: #0d5bcd;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 6px var(--shadow-color);
}

ul {
    list-style: none;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-color);
    position: relative;
    padding-bottom: var(--spacing-md);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: var(--radius-sm);
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
    text-align: center;
    gap: 8px;
}

.btn i {
    font-size: 1.1rem;
}

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

.btn-primary:hover {
    background-color: #0d5bcd;
    color: white;
    box-shadow: 0 4px 8px rgba(26, 115, 232, 0.3);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: #f0f7ff;
    box-shadow: 0 4px 8px rgba(26, 115, 232, 0.2);
    transform: translateY(-2px);
}

/* 头部样式 */
header {
    background-color: white;
    box-shadow: 0 2px 10px var(--shadow-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--spacing-md) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo i {
    font-size: 2rem;
    color: var(--primary-color);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

nav ul {
    display: flex;
    gap: var(--spacing-xl);
}

nav ul li a {
    font-weight: 600;
    color: var(--text-color);
    position: relative;
    padding: var(--spacing-xs) 0;
}

nav ul li a:hover {
    color: var(--primary-color);
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

nav ul li a:hover::after {
    width: 100%;
}

/* 英雄区域样式 */
.hero {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e8f0fe 100%);
}

.hero .container {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.hero-content {
    flex: 1;
}

.hero-content h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

/* 概述部分样式 */
.overview {
    padding: var(--spacing-xxl) 0;
    background-color: var(--background-color);
}

.steps {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.step {
    flex: 1;
    text-align: center;
    padding: var(--spacing-xl);
    background-color: white;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px var(--shadow-color);
    transition: var(--transition);
}

.step:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.step-icon {
    width: 80px;
    height: 80px;
    background-color: #e8f0fe;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
}

.step-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.step h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

.step p {
    color: var(--text-secondary);
}

/* 内容部分通用样式 */
section {
    padding: var(--spacing-xxl) 0;
}

section:nth-child(even) {
    background-color: var(--background-secondary);
}

.content-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-xxl);
}

.content-wrapper.reverse {
    flex-direction: row-reverse;
}

.content-text, .content-image {
    flex: 1;
}

.content-text h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

.content-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.image-caption {
    text-align: center;
    margin-top: var(--spacing-md);
    color: var(--text-secondary);
    font-style: italic;
}

/* 步骤列表样式 */
.steps-list {
    margin-bottom: var(--spacing-xl);
}

.step-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    margin-right: var(--spacing-md);
    flex-shrink: 0;
}

.step-item p {
    margin-bottom: 0;
    padding-top: 4px;
}

/* 套餐提示样式 */
.package-tips {
    display: flex;
    align-items: flex-start;
    background-color: #e8f0fe;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
}

.tip-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: var(--spacing-md);
    flex-shrink: 0;
}

.tip-content h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.tip-content p {
    margin-bottom: 0;
    font-size: 1rem;
}

/* CTA按钮容器 */
.cta-button {
    display: flex;
    justify-content: flex-start;
}

/* FAQ部分样式 */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.faq-question {
    padding: var(--spacing-lg);
    background-color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: #f0f7ff;
}

.faq-question h3 {
    font-size: 1.2rem;
    margin: 0;
}

.toggle-icon {
    color: var(--primary-color);
}

.faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    background-color: white;
}

/* 页脚样式 */
footer {
    background-color: #202124;
    color: white;
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-logo i {
    font-size: 2rem;
    color: white;
}

.footer-logo h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-links h3, .footer-contact h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-xs);
}

.footer-links h3::after, .footer-contact h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links ul li a {
    color: #dadce0;
}

.footer-links ul li a:hover {
    color: white;
}

.footer-contact p {
    margin-bottom: var(--spacing-md);
    color: #dadce0;
}

.contact-methods {
    display: flex;
    gap: var(--spacing-md);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: #dadce0;
}

.contact-method:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid #3c4043;
    color: #9aa0a6;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content h2 {
        font-size: 2.5rem;
    }
    
    .steps {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .content-wrapper {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
    
    .content-wrapper.reverse {
        flex-direction: column;
    }
    
    .hero .container {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    nav ul {
        gap: var(--spacing-lg);
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .content-text h3 {
        font-size: 1.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .btn {
        width: 100%;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-content h2 {
        font-size: 1.8rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .content-text h3 {
        font-size: 1.3rem;
    }
}