/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 主容器 */
.container {
    min-height: 100vh;
    position: relative;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #FFE4E6 0%, #FFC0CB 50%, #FF69B4 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 80px 5% 60px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 2;
}

.main-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    font-weight: 400;
}

/* 下载按钮 */
.download-section {
    margin-bottom: 40px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    background: #000;
    color: white;
    text-decoration: none;
    padding: 12px 20px;
    border-radius: 8px;
    transition: transform 0.2s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
}

.download-btn img {
    width: 24px;
    height: 24px;
    margin-right: 12px;
}

.download-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.get-it-on {
    font-size: 0.75rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.store-name {
    font-size: 1.1rem;
    font-weight: 500;
}

/* 手机展示区域 */
.phone-mockup {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    max-width: 600px;
    margin-left: 40px;
}

.phone {
    width: 280px;
    height: 560px;
    background: #000;
    border-radius: 30px;
    padding: 8px;
    position: absolute;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.phone-1 {
    z-index: 2;
    left: -50px;
    transform: rotate(-10deg);
}

.phone-2 {
    z-index: 1;
    right: -50px;
    transform: rotate(10deg);
}

.phone-3 {
    z-index: 2;
    right: 0;
    transform: rotate(5deg);
}

.screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #FFE4E6 0%, #FFC0CB 100%);
    border-radius: 33px;
    position: relative;
    overflow: hidden;
}

/* 视频通话界面 */
.video-call-ui {
    padding: 20px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.status-bar {
    color: white;
    font-weight: 600;
    text-align: center;
    margin-bottom: 20px;
}

.caller-info {
    text-align: center;
    color: white;
    margin-bottom: 20px;
}

.caller-name {
    display: block;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.call-status {
    font-size: 0.9rem;
    opacity: 0.8;
}

.call-avatar {
    width: 180px;
    height: 240px;
    background: url('images/avatar/man_04.png') center/cover;
    border-radius: 20px;
    margin: 0 auto 40px;
}

.call-controls {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.call-btn {
    width: 60px;
    height: 60px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.call-btn img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    border-radius: 50%;
}

.decline {
    background: #FF4757;
}

.accept {
    background: #2ED573;
}

/* 发现界面 */
.discover-ui {
    padding: 20px;
    height: 100%;
}

.tab-header {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.tab {
    color: rgba(255,255,255,0.6);
    font-weight: 500;
    cursor: pointer;
}

.tab.active {
    color: white;
    border-bottom: 2px solid white;
}

.user-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.user-card {
    background: rgba(255,255,255,0.1);
    border-radius: 15px;
    padding: 15px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.user-avatar {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #FF6B6B, #4ECDC4);
    border-radius: 50%;
    margin: 0 auto 10px;
    background-size: cover;
    background-position: center;
}

.user-name {
    display: block;
    color: white;
    font-weight: 600;
    margin-bottom: 5px;
}

.user-age {
    color: rgba(255,255,255,0.8);
    font-size: 0.8rem;
}

/* Features Section */
.features-section {
    background: linear-gradient(135deg, #FFA726 0%, #FF7043 50%, #FF5722 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 80px 5% 60px;
    position: relative;
}

.feature-content {
    flex: 1;
    max-width: 600px;
    z-index: 2;
}

.feature-title {
    font-size: 3rem;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
    line-height: 1.2;
}

.feature-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
}

.feature-phone {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    max-width: 400px;
    margin-left: 40px;
}

/* 匹配界面 */
.match-ui {
    padding: 20px;
    height: 100%;
    background: linear-gradient(135deg, #FFA726 0%, #FF7043 100%);
}

.match-content {
    margin-top: 100px;
}

.match-card {
    background: rgba(255,255,255,0.15);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.match-avatar {
    width: 100px;
    height: 100px;
    background: url('images/avatar/woman_05.png') center/cover;
    border-radius: 50%;
    margin: 0 auto 20px;
}

.match-name {
    display: block;
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.quick-login {
    background: #FF4757;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
}

/* 通用样式 */
.container-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

.section-title.white {
    color: white;
}

.section-subtitle {
    font-size: 1.2rem;
    text-align: center;
    color: #666;
    margin-bottom: 60px;
}

.section-subtitle.white {
    color: rgba(255,255,255,0.9);
}

/* 功能特色介绍 */
.features-intro {
    padding: 100px 0;
    background: #f8f9fa;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.feature-item {
    text-align: center;
    padding: 40px 20px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.video-icon {
    background: url('images/icons/hd_video_calls_icon.svg') center/contain no-repeat;
}

.match-icon {
    background: url('images/icons/smart_matching_icon.svg') center/contain no-repeat;
}

.secure-icon {
    background: url('images/icons/safe_secure_icon.svg') center/contain no-repeat;
}

.global-icon {
    background: url('images/icons/global_community_icon.svg') center/contain no-repeat;
}

.feature-item h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

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

/* 统计数据部分 */
.stats-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 100px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.stat-item {
    text-align: center;
    color: white;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(45deg, #fff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 500;
}

/* 用户评价部分 */
.testimonials-section {
    padding: 100px 0;
    background: white;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.testimonial-card {
    background: #f8f9fa;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.testimonial-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #FF6B6B, #4ECDC4);
    border-radius: 50%;
    margin: 0 auto 20px;
    background-size: cover;
    background-position: center;
}

/* 用户头像 */
.matthew-avatar {
    background-image: url('images/avatar/man_01.png');
}

.ava-avatar {
    background-image: url('images/avatar/woman_01.png');
}

.liam-avatar {
    background-image: url('images/avatar/man_02.png');
}

.sophia-avatar {
    background-image: url('images/avatar/woman_02.png');
}

/* 评价用户头像 */
.sarah-avatar {
    background-image: url('images/avatar/woman_03.png');
}

.david-avatar {
    background-image: url('images/avatar/man_03.png');
}

.emma-avatar {
    background-image: url('images/avatar/woman_04.png');
}

.stars {
    color: #ffd700;
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.testimonial-content p {
    font-style: italic;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.testimonial-author strong {
    display: block;
    color: #333;
    font-weight: 600;
    margin-bottom: 5px;
}

.testimonial-author span {
    color: #999;
    font-size: 0.9rem;
}

/* 安全保障部分 */
.security-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 100px 0;
}

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

.security-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.security-feature {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.security-check {
    width: 40px;
    height: 40px;
    background: #4CAF50;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    flex-shrink: 0;
}

.security-feature h4 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.security-feature p {
    color: rgba(255,255,255,0.9);
    line-height: 1.6;
}

.security-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.security-shield {
    width: 400px;
    height: 480px;
    background: url('images/1.jpg') center/cover;
    border-radius: 40px;
    position: relative;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}


/* FAQ部分 */
.faq-section {
    padding: 100px 0;
    background: #f8f9fa;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.faq-item {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.faq-item h4 {
    color: #333;
    font-size: 1.2rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.faq-item p {
    color: #666;
    line-height: 1.6;
}

/* 最终行动号召 */
.final-cta {
    background: linear-gradient(135deg, #FF6B6B 0%, #4ECDC4 100%);
    padding: 100px 0;
    text-align: center;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.download-btn-large {
    display: inline-flex;
    align-items: center;
    background: #000;
    color: white;
    text-decoration: none;
    padding: 15px 25px;
    border-radius: 12px;
    transition: transform 0.2s ease;
    min-width: 200px;
}

.download-btn-large:hover {
    transform: translateY(-3px);
}

.download-btn-large.app-store {
    background: #007AFF;
}

.download-btn-large img {
    width: 32px;
    height: 32px;
    margin-right: 15px;
}

.app-preview {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    height: 600px;
}

.final-phone {
    width: 300px;
    height: 600px;
    background: #000;
    border-radius: 35px;
    padding: 10px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.3);
}

.app-interface {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 25px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.interface-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.app-logo {
    font-size: 2rem;
}

.app-name {
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
}

.interface-content {
    text-align: center;
    color: white;
}

.user-preview {
    background: rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 40px;
    backdrop-filter: blur(10px);
}

.preview-avatar {
    width: 100px;
    height: 100px;
    background: url('images/avatar/woman_06.png') center/cover;
    border-radius: 50%;
    margin: 0 auto 20px;
}

.preview-info h4 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.preview-info p {
    opacity: 0.9;
}

.get-started-btn {
    background: #FF4757;
    color: white;
    border: none;
    padding: 15px 40px;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

.get-started-btn:hover {
    background: #ff3742;
}

/* Footer */
.footer {
    background: rgba(0,0,0,0.1);
    padding: 40px 5%;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 20px;
}

.footer-link {
    color: #666;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: #333;
}

.copyright {
    color: #999;
    font-size: 0.9rem;
}

/* 装饰元素 */
.decorative-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.bubble, .heart, .star {
    position: absolute;
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.bubble {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.3);
    border-radius: 50%;
}

.bubble-1 {
    top: 20%;
    right: 10%;
    animation-delay: 0s;
}

.bubble-2 {
    top: 60%;
    left: 5%;
    animation-delay: 2s;
}

.bubble-3 {
    bottom: 30%;
    right: 20%;
    animation-delay: 4s;
}

.heart {
    width: 30px;
    height: 30px;
    background: #FF69B4;
    transform: rotate(45deg);
    position: relative;
}

.heart:before,
.heart:after {
    content: '';
    width: 30px;
    height: 30px;
    position: absolute;
    background: #FF69B4;
    border-radius: 50%;
}

.heart:before {
    top: -15px;
    left: 0;
}

.heart:after {
    left: -15px;
    top: 0;
}

.heart-1 {
    top: 30%;
    left: 15%;
    animation-delay: 1s;
}

.heart-2 {
    bottom: 20%;
    left: 10%;
    animation-delay: 3s;
}

.star {
    width: 0;
    height: 0;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-bottom: 10px solid #FFD700;
    position: relative;
}

.star:before {
    content: '';
    position: absolute;
    left: -15px;
    top: 3px;
    width: 0;
    height: 0;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-top: 10px solid #FFD700;
}

.star-1 {
    top: 40%;
    right: 15%;
    animation-delay: 1.5s;
}

.star-2 {
    bottom: 40%;
    right: 5%;
    animation-delay: 3.5s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .main-title, .feature-title {
        font-size: 2.5rem;
    }

    .phone-mockup, .feature-phone {
        margin-left: 20px;
    }

    .security-content {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .hero-section, .features-section {
        flex-direction: column;
        text-align: center;
        padding: 60px 5% 40px;
    }

    .phone-mockup, .feature-phone {
        margin-left: 0;
        margin-top: 40px;
        transform: scale(0.8);
        flex-direction: column;
        height: auto;
    }

    .phone-1, .phone-2, .phone-3 {
        position: relative;
        transform: none;
        margin: 20px auto;
        left: auto;
        right: auto;
    }

    .main-title, .feature-title, .section-title {
        font-size: 2rem;
    }

    .subtitle, .feature-subtitle, .section-subtitle {
        font-size: 1rem;
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

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

    .security-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .security-feature {
        justify-content: center;
        text-align: left;
    }

    .faq-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .final-phone {
        width: 250px;
        height: 500px;
    }

    .footer-links {
        flex-direction: column;
        gap: 20px;
    }

    .features-intro, .stats-section, .testimonials-section,
    .security-section, .faq-section, .final-cta {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .main-title, .feature-title, .section-title {
        font-size: 1.8rem;
    }

    .phone {
        width: 220px;
        height: 440px;
    }

    .hero-section, .features-section {
        padding: 40px 5% 30px;
    }

    .features-intro, .stats-section, .testimonials-section,
    .security-section, .faq-section, .final-cta {
        padding: 40px 0;
    }

    .feature-item, .testimonial-card, .faq-item {
        padding: 20px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .final-phone {
        width: 200px;
        height: 400px;
    }

    .app-interface {
        padding: 20px;
    }

    .preview-avatar {
        width: 60px;
        height: 60px;
    }

    .user-preview {
        padding: 20px;
    }

    .security-shield {
        width: 250px;
        height: 300px;
        border-radius: 25px;
    }

    .security-shield::before {
        font-size: 3rem;
    }
}