:root {
    --primary-color: #ff0050;
    --primary-light: #ff6b81;
    --dark-color: #121212;
    --text-color: #333;
    --light-bg: #f8f9fa;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    padding: 0;
    margin: 0;
    background-color: #fff;
    color: var(--text-color);
    line-height: 1.6;
}

/* 导航栏样式 */
.navbar {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    text-decoration: none;
}

.logo span {
    color: var(--primary-color);
}

.nav-links {
    display: none;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
        gap: 30px;
    }
}

.nav-link {
    color: #555;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover {
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: block;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #333;
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: bold;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
    white-space: nowrap;
}

@media (max-width: 576px) {
    .btn {
        padding: 10px 18px;
        font-size: 0.9rem;
    }
    
    html[lang="zh-CN"] .btn {
        padding: 10px 16px;
    }
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: 0 4px 12px rgba(255,0,80,0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(255,0,80,0.4);
}

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

.btn-secondary:hover {
    background-color: rgba(255,0,80,0.05);
}

/* 加载动画样式 */
.loading-spinner {
    display: inline-block;
    margin-right: 8px;
    vertical-align: middle;
}

.spinner-circle {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.8s linear infinite;
    vertical-align: middle;
}

.loading-text {
    display: inline-block;
    vertical-align: middle;
    font-size: 0.9em;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #fff5f7, #f5f0ff);
    padding: 60px 0;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

@media (min-width: 768px) {
    .hero-container {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.hero-content {
    text-align: center;
}

@media (min-width: 768px) {
    .hero-content {
        text-align: left;
        width: 50%;
    }
}

.hero-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 20px;
    color: #222;
    line-height: 1.2;
}

html[lang="zh-CN"] .hero-title {
    font-size: 2.3rem;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

@media (min-width: 576px) {
    .hero-buttons {
        flex-direction: row;
    }
}

.hero-image-container {
    margin-top: 40px;
    width: 100%;
}

@media (min-width: 768px) {
    .hero-image-container {
        margin-top: 0;
        width: 45%;
    }
}

.hero-image {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

/* 信任标志区域 */
.trust-badges {
    padding: 40px 0;
    background-color: white;
}

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

.trust-title {
    color: #888;
    margin-bottom: 30px;
}

.trust-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 30px;
    opacity: 0.7;
}

.trust-logo {
    height: 30px;
}

/* 特性区域样式 */
.features {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    font-weight: bold;
    margin-bottom: 20px;
    color: #222;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto 50px;
}

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

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

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

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.feature-card {
    background-color: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

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

.feature-content {
    padding: 20px;
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    color: white;
    flex-shrink: 0;
}

.feature-title {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.feature-name {
    font-weight: bold;
    font-size: 1.2rem;
    margin: 0;
    line-height: 1.3;
}

html[lang="zh-CN"] .feature-name {
    font-size: 1.1rem;
}

.feature-description {
    color: #666;
    line-height: 1.6;
}

/* 工作原理区域 */
.how-it-works {
    padding: 80px 0;
    background-color: white;
}

.steps-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.step {
    display: flex;
    margin-bottom: 40px;
    position: relative;
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    font-weight: bold;
    flex-shrink: 0;
    margin-right: 20px;
    position: relative;
    z-index: 2;
}

.step-content {
    background-color: var(--light-bg);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    flex-grow: 1;
}

.step-title {
    font-weight: bold;
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #222;
}

.step-description {
    color: #666;
}

/* 价格区域 */
.pricing {
    padding: 80px 0;
    background-color: var(--light-bg);
}

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

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 50px;
}

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

@media (min-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pricing-card {
    background-color: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    text-align: center;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
    height: 100%;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.12);
}

.pricing-card.popular {
    border: 2px solid var(--primary-color);
}

.popular-badge {
    position: absolute;
    top: 0;
    right: 30px;
    background: var(--primary-color);
    color: white;
    padding: 5px 15px;
    font-size: 12px;
    font-weight: bold;
    border-radius: 0 0 8px 8px;
}

.plan-name {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 15px;
    color: #222;
}

.original-price {
    text-decoration: line-through;
    color: #999;
    font-size: 14px;
}

.plan-price {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.plan-duration {
    color: #888;
    margin-bottom: 20px;
}

.plan-features {
    list-style: none;
    padding: 0;
    margin: 0 0 30px;
    text-align: left;
}

.plan-feature {
    padding: 8px 0;
    display: flex;
    align-items: flex-start;
}

.plan-feature span {
    line-height: 1.4;
}

.feature-check {
    color: var(--primary-color);
    margin-right: 10px;
}

/* 常见问题区域 */
.faq {
    padding: 80px 0;
    background-color: white;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.faq-item {
    background-color: var(--light-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
    font-weight: bold;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #eee;
    color: #666;
    display: none;
}

.faq-answer.active {
    display: block;
}

/* 语言切换提示样式 */
.language-prompt {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 2000;
    padding: 15px 0;
}

.language-prompt-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

@media (min-width: 768px) {
    .language-prompt-container {
        flex-direction: row;
        justify-content: space-between;
    }
}

.language-prompt-text {
    margin-bottom: 10px;
    text-align: center;
}

@media (min-width: 768px) {
    .language-prompt-text {
        margin-bottom: 0;
    }
}

.language-prompt-buttons {
    display: flex;
    gap: 10px;
}

.language-prompt-btn {
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

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

.language-prompt-btn-primary:hover {
    background-color: var(--primary-light);
}

.language-prompt-btn-secondary {
    background-color: #f0f0f0;
    color: #333;
}

.language-prompt-btn-secondary:hover {
    background-color: #e0e0e0;
}

/* 语言切换选项样式 */
.language-switcher {
    margin-top: 20px;
    text-align: center;
    padding: 10px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.language-options {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.language-option {
    color: #666;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.language-option:hover {
    color: var(--primary-color);
}

.language-option.active {
    color: var(--primary-color);
    font-weight: bold;
}

/* 联系我们区域 */
.contact {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

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

.contact-info {
    background-color: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.contact-method {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    color: white;
}

.contact-form {
    background-color: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #444;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

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

.form-textarea {
    height: 120px;
    resize: none;
}

/* 页脚区域 */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 60px 0 30px;
}

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

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

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

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-logo {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 15px;
    display: inline-block;
}

.footer-logo span {
    color: var(--primary-light);
}

.footer-description {
    color: #aaa;
    margin-bottom: 20px;
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.social-icon {
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: background-color 0.3s;
}

.social-icon:hover {
    background-color: var(--primary-color);
}

.footer-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 20px;
    color: white;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-link {
    margin-bottom: 10px;
}

.footer-link a {
    color: #aaa;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-link a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 14px;
}

/* 动画效果 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* 倒计时样式 */
.countdown {
    background-color: rgba(255, 0, 80, 0.1);
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    margin-bottom: 30px;
}

.countdown-title {
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.countdown-timer {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.countdown-number {
    background-color: var(--primary-color);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 5px;
}

.countdown-label {
    font-size: 12px;
    color: #666;
}

/* 移动菜单样式 */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: white;
    z-index: 2000;
    padding: 20px;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.mobile-menu-link {
    font-size: 18px;
    color: #333;
    text-decoration: none;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(255, 0, 80, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* 通知条 */
.notification-bar {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 10px 0;
    text-align: center;
    font-size: 14px;
}

.notification-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.notification-text {
    margin-right: 15px;
}

.notification-link {
    color: white;
    text-decoration: underline;
    font-weight: bold;
}

/* 加载动画 */
.loader {
    display: inline-block;
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltip-text {
    visibility: hidden;
    width: 200px;
    background-color: #333;
    color: white;
    text-align: center;
    border-radius: 6px;
    padding: 10px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* 用户评价样式 */
.trust-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
    font-size: 18px;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 50px;
}

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

.testimonial-card {
    background-color: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.testimonial-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 15px;
    border: 3px solid var(--primary-light);
}

.testimonial-name {
    font-weight: bold;
    margin: 0 0 5px 0;
    color: #333;
}

.testimonial-position {
    font-size: 14px;
    color: #666;
    margin: 0 0 5px 0;
}

.testimonial-stars {
    color: #FFD700;
    font-size: 14px;
}

.testimonial-text {
    color: #555;
    line-height: 1.6;
    font-style: italic;
}

.testimonial-brands {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #eee;
}

.brands-title {
    font-weight: 600;
    color: #555;
    margin-bottom: 20px;
}

.brands-logos {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    align-items: center;
}

.brand-logo {
    filter: grayscale(100%);
    opacity: 0.7;
    transition: filter 0.3s, opacity 0.3s;
    max-height: 40px;
}

.brand-logo:hover {
    filter: grayscale(0);
    opacity: 1;
}

/* 品牌展示区域样式 */
.testimonial-brands {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid #eee;
}

.brands-title {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
    color: #333;
}

.brands-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
    font-size: 16px;
}

.brands-showcase {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-bottom: 40px;
}

.brands-category {
    background-color: #f9f9f9;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.03);
}

.category-title {
    font-size: 18px;
    font-weight: 600;
    color: #444;
    margin-bottom: 20px;
    text-align: center;
    position: relative;
}

.category-title:after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--primary-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

.brands-logos {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
}

.brand-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s;
    width: 120px;
}

.brand-item:hover {
    transform: translateY(-5px);
}

.brand-logo {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.brand-item:hover .brand-logo {
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
}

.brand-name {
    font-size: 14px;
    font-weight: 600;
    color: #555;
    text-align: center;
}

.brands-cta {
    text-align: center;
    margin-top: 30px;
    padding: 25px;
    background-color: #f5f5f5;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.brands-cta p {
    font-size: 16px;
    color: #444;
    margin-bottom: 15px;
    font-weight: 500;
}

@media (min-width: 768px) {
    .brands-showcase {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .brands-category {
        flex: 1;
        min-width: 300px;
    }
}