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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

section {
    padding: 80px 0;
}

h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.3;
}

h2 {
    font-size: 36px;
    text-align: center;
    margin-bottom: 16px;
    color: #1a1a2e;
}

.section-subtitle {
    text-align: center;
    color: #666;
    font-size: 16px;
    margin-bottom: 48px;
    line-height: 1.6;
}

.hero-section {
    background: linear-gradient(135deg, #f0fdf4 0%, #e0f7fa 50%, #f5f5f5 100%);
    padding: 100px 0 80px;
    min-height: 600px;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.hero-text {
    flex: 1;
    max-width: 550px;
}

.hero-badge {
    display: inline-block;
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 20px;
}

.hero-text h1 {
    font-size: 48px;
    color: #1a1a2e;
    margin-bottom: 24px;
}

.hero-text h1 .brand {
    color: #10b981;
}

.feature-list {
    list-style: none;
    margin-bottom: 32px;
}

.feature-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
    color: #555;
    font-size: 15px;
    text-align: left;
}

.feature-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    width: 18px;
    height: 18px;
    background: #10b981;
    border-radius: 50%;
}

.feature-list li::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 7px;
    width: 5px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: #10b981;
    color: white;
    padding: 14px 28px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
    width: 214px;
    height: 56px;
}

.download-btn:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

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

.download-btn span {
    line-height: 1.2;
}

.download-btn small {
    font-size: 12px;
    font-weight: 400;
    opacity: 0.9;
}

.download-btn.white {
    background: white;
    color: #10b981;
}

.download-btn.white:hover {
    background: #f0fdf4;
}

.security-note {
    margin-top: 16px;
    font-size: 13px;
    color: #888;
}

.hero-image {
    flex: 1;
    max-width: 400px;
}

.hero-image img {
    width: 100%;
    height: auto;
}

.transfer-types-section {
    background: #fff;
    padding: 80px 0;
}

.data-types {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.data-type-item {
    text-align: center;
}

.icon-wrap {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
}

.icon-wrap.blue { background: #dbeafe; }
.icon-wrap.purple { background: #f3e8ff; }
.icon-wrap.pink { background: #fce7f3; }
.icon-wrap.green { background: #d1fae5; }
.icon-wrap.orange { background: #ffedd5; }
.icon-wrap.red { background: #fee2e2; }
.icon-wrap.yellow { background: #fef3c7; }
.icon-wrap.teal { background: #ccfbf1; }

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

.data-type-item span {
    font-size: 14px;
    color: #555;
}

.transfer-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.transfer-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: all 0.3s ease;
}

.transfer-card:hover {
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    transform: translateY(-4px);
}

.device-icons {
    width: 168px;
    height: 90px;
    margin: 0 auto 20px;
}

.device-icons img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.transfer-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: #1a1a2e;
}

.transfer-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.manage-devices-section {
    background: linear-gradient(180deg, #f0fdf4 0%, #e0f7fa 100%);
    padding: 80px 0;
}

.manage-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.manage-card.large {
    background: #fff;
    border-radius: 20px;
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.manage-card h3 {
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: #1a1a2e;
}

.manage-card h3 .icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.backup-card h3 .icon { background: #d1fae5; }
.transfer-card-pc h3 .icon { background: #dbeafe; }

.manage-card h3 .icon img {
    width: 18px;
    height: 18px;
}

.manage-card ul {
    list-style: none;
}

.manage-card ul li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
    font-size: 14px;
    color: #555;
    line-height: 1.5;
}

.manage-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 5px;
    width: 16px;
    height: 16px;
    background: #10b981;
    border-radius: 50%;
}

.manage-card ul li::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 7px;
    width: 5px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.transfer-card-pc ul li::before {
    background: #3b82f6;
}

.manage-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
}

.feature-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

.feature-card .icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 24px;
}

.feature-card:nth-child(1) .icon { background: #dbeafe; }
.feature-card:nth-child(2) .icon { background: #f3e8ff; }
.feature-card:nth-child(3) .icon { background: #ccfbf1; }

.feature-card .icon img {
    width: 24px;
    height: 24px;
}

.feature-card h4 {
    font-size: 16px;
    margin-bottom: 8px;
    color: #1a1a2e;
}

.feature-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

.toolbox-section {
    background: #fff;
    padding: 80px 0;
}

.toolbox-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.tool-card {
    border-radius: 20px;
    padding: 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

.tool-card.pink { background: #fdf2f8; }
.tool-card.blue { background: #eff6ff; }
.tool-card.green { background: #f0fdf4; }
.tool-card.orange { background: #fff7ed; }

.tool-image {
    margin-bottom: 16px;
}

.tool-image img {
    width: 100%;
    height: auto;
    max-height: 150px;
    object-fit: contain;
}

.tool-card h3 {
    font-size: 16px;
    margin-bottom: 8px;
    color: #1a1a2e;
}

.tool-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

.why-choose-section {
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 80px 0;
}

.choose-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.choose-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.choose-card:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    transform: translateY(-4px);
}

.choose-card .icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: #d1fae5;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

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

.choose-card h3 {
    font-size: 16px;
    margin-bottom: 12px;
    color: #1a1a2e;
}

.choose-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

.tech-spec-section {
    background: #fff;
    padding: 80px 0;
}

.spec-list {
    max-width: 800px;
    margin: 0 auto;
    background: #f0fdf4;
    border-radius: 16px;
    padding: 32px;
}

.spec-item {
    display: flex;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid #d1fae5;
}

.spec-item:last-child {
    border-bottom: none;
}

.spec-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: #a7f3d0;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
}

.spec-icon img {
    width: 20px;
    height: 20px;
}

.spec-label {
    flex: 1;
    font-weight: 600;
    color: #1a1a2e;
    font-size: 15px;
}

.spec-value {
    color: #666;
    font-size: 14px;
}

.testimonials-section {
    background: #fff;
    padding: 80px 0;
}

.testimonial-slider {
    max-width: 800px;
    margin: 0 auto 48px;
    position: relative;
}

.testimonial-card {
    display: flex;
    gap: 32px;
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border-radius: 24px;
    padding: 40px;
    align-items: flex-start;
}

.avatar {
    flex-shrink: 0;
}

.avatar img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #fff;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.testimonial-content {
    flex: 1;
}

.quote {
    font-size: 15px;
    color: #555;
    line-height: 1.7;
    margin-bottom: 16px;
    font-style: italic;
}

.stars {
    display: flex;
    gap: 4px;
    margin-bottom: 12px;
}

.stars img {
    width: 20px;
    height: 20px;
}

.testimonial-content h4 {
    font-size: 16px;
    color: #1a1a2e;
    margin-bottom: 4px;
}

.role {
    font-size: 14px;
    color: #888;
}

.swiper-button-prev,
.swiper-button-next {
    width: 44px;
    height: 44px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    color: #333;
}

.swiper-button-prev:after,
.swiper-button-next:after {
    font-size: 18px;
    font-weight: bold;
}

.swiper-pagination-bullet-active {
    background: #f59e0b;
}

.media-logos {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.media-logos .logo {
    font-size: 16px;
    font-weight: 600;
}

.logo.softreview { color: #60a5fa; }
.logo.techradar { color: #f87171; }
.logo.lifewire { color: #fb923c; }
.logo.tomsguide { color: #60a5fa; }
.logo.macworld { color: #6b7280; }
.logo.softpedia { color: #4ade80; }

.tips-section {
    background: linear-gradient(180deg, #f0fdf4 0%, #e0f7fa 100%);
    padding: 80px 0;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
    max-width: 900px;
    margin: 0 auto;
    background: rgba(255,255,255,0.7);
    border-radius: 16px;
    padding: 32px;
}

.tips-column h3 {
    font-size: 18px;
    color: #1a1a2e;
    margin-bottom: 16px;
}

.tips-column ul {
    list-style: none;
}

.tips-column li {
    margin-bottom: 12px;
}

.tips-column a {
    color: #10b981;
    text-decoration: none;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s ease;
}

.tips-column a:hover {
    color: #059669;
}

.tips-column a::before {
    content: '→';
    color: #10b981;
}

.faq-section {
    background: #fff;
    padding: 80px 0;
}

.section-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 24px;
}

.section-badge img {
    width: 20px;
    height: 20px;
}

.section-badge span {
    background: #e0f7fa;
    color: #0891b2;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active {
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    cursor: pointer;
    font-weight: 500;
    color: #374151;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: #f9fafb;
}

.faq-arrow {
    width: 20px;
    height: 20px;
    position: relative;
    transition: transform 0.3s ease;
}

.faq-arrow::before,
.faq-arrow::after {
    content: '';
    position: absolute;
    background: #6b7280;
    transition: transform 0.3s ease;
}

.faq-arrow::before {
    width: 10px;
    height: 2px;
    top: 9px;
    left: 0;
    transform: rotate(45deg);
}

.faq-arrow::after {
    width: 10px;
    height: 2px;
    top: 9px;
    left: 7px;
    transform: rotate(-45deg);
}

.faq-item.active .faq-arrow {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 24px 20px;
    margin-bottom: 20px;
}

.faq-answer p {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.7;
}

.cta-section {
    background: linear-gradient(135deg, #10b981 0%, #14b8a6 100%);
    padding: 80px 0;
    text-align: center;
}

.cta-section h2 {
    color: #fff;
    font-size: 36px;
    margin-bottom: 8px;
}

.cta-section p {
    color: rgba(255,255,255,0.9);
    font-size: 18px;
    margin-bottom: 32px;
}

@media (max-width: 1024px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-text {
        max-width: 100%;
    }
    
    .hero-image {
        max-width: 400px;
    }
    
    .transfer-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .manage-cards {
        grid-template-columns: 1fr;
    }
    
    .toolbox-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .choose-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h2 {
        font-size: 28px;
    }
    
    .hero-text h1 {
        font-size: 36px;
    }
    
    .data-types {
        gap: 16px;
    }
    
    .icon-wrap {
        width: 56px;
        height: 56px;
    }
    
    .transfer-cards {
        grid-template-columns: 1fr;
    }
    
    .toolbox-grid {
        grid-template-columns: 1fr;
    }
    
    .choose-cards {
        grid-template-columns: 1fr;
    }
    
    .feature-cards {
        grid-template-columns: 1fr;
    }
    
    .testimonial-card {
        flex-direction: column;
        text-align: center;
    }
    
    .avatar {
        margin: 0 auto;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .media-logos {
        gap: 20px;
    }
    
    .spec-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .hero-text h1 {
        font-size: 28px;
    }
    
    .download-btn {
        padding: 12px 20px;
        font-size: 14px;
    }
    
    .data-types {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
    }
    
    .icon-wrap {
        width: 48px;
        height: 48px;
    }
    
    .data-type-item span {
        font-size: 12px;
    }
}