* {
    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: #fff;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

.header {
    background: #fff;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 22px;
    font-weight: bold;
    color: #333;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav a {
    font-size: 15px;
    color: #555;
    transition: color 0.3s;
}

.nav a:hover {
    color: #5b7ffd;
}

.nav a.active {
    color: #5b7ffd;
}

.member-btn {
    background: linear-gradient(135deg, #5b7ffd 0%, #7c5bfd 100%);
    color: #fff;
    padding: 10px 24px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.member-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(91,127,253,0.4);
}

.hero-section {
    background: linear-gradient(135deg, #e8f0fe 0%, #f0e6ff 50%, #d4e7ff 100%);
    padding: 80px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(91,127,253,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(124,91,253,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

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

.hero-left {
    flex: 1;
}

.tag-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
}

.tag-tab {
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s;
    cursor: pointer;
}

.tag-tab.active {
    background: #333;
    color: #fff;
}

.tag-tab:not(.active) {
    background: rgba(255,255,255,0.8);
    color: #666;
}

.tag-tab:not(.active):hover {
    background: #fff;
}

.hero-title {
    font-size: 42px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-desc {
    font-size: 16px;
    color: #666;
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-btn {
    background: linear-gradient(135deg, #5b7ffd 0%, #7c5bfd 100%);
    color: #fff;
    padding: 14px 40px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

.hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(91,127,253,0.4);
}

.hero-right {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

.feature-card {
    background: rgba(255,255,255,0.9);
    border-radius: 16px;
    padding: 24px;
    width: calc(50% - 8px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(91,127,253,0.15);
}

.feature-card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 12px;
}

.feature-card h4 {
    font-size: 14px;
    font-weight: 600;
    color: #333;
    margin-bottom: 6px;
}

.feature-card p {
    font-size: 12px;
    color: #888;
    line-height: 1.5;
}

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

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

.features-title h2 {
    font-size: 36px;
    font-weight: bold;
    color: #333;
    margin-bottom: 12px;
}

.features-title p {
    font-size: 16px;
    color: #888;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 60px;
}

.feature-item {
    text-align: center;
    padding: 32px 24px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: all 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(91,127,253,0.15);
}

.feature-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    object-fit: contain;
}

.feature-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 12px;
}

.feature-item p {
    font-size: 14px;
    color: #888;
    line-height: 1.6;
}

.platform-section {
    padding: 60px 0;
    background: #f8fafc;
}

.platform-title {
    text-align: center;
    margin-bottom: 40px;
}

.platform-title h2 {
    font-size: 28px;
    font-weight: bold;
    color: #333;
    margin-bottom: 12px;
}

.platform-title p {
    font-size: 15px;
    color: #888;
}

.platform-content {
    display: flex;
    gap: 60px;
    align-items: center;
}

.platform-left {
    flex: 1;
}

.platform-left h3 {
    font-size: 22px;
    font-weight: 600;
    color: #333;
    margin-bottom: 24px;
}

.platform-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.platform-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px;
    background: #fff;
    border-radius: 12px;
    transition: all 0.3s;
}

.platform-item:hover {
    transform: translateX(5px);
}

.platform-item img {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    border-radius: 10px;
    object-fit: cover;
}

.platform-item-content h4 {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 4px;
}

.platform-item-content p {
    font-size: 13px;
    color: #888;
    line-height: 1.5;
}

.platform-right {
    flex: 1;
    display: flex;
    justify-content: center;
}

.platform-right img {
    width: 300px;
    height: 300px;
    object-fit: contain;
}

.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #e8f0fe 0%, #f0e6ff 100%);
}

.cta-wrapper {
    background: rgba(255,255,255,0.95);
    border-radius: 24px;
    padding: 60px;
    display: flex;
    align-items: center;
    gap: 60px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
}

.cta-images {
    display: flex;
    gap: 12px;
}

.cta-images img {
    width: 180px;
    height: 220px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.cta-images img:first-child {
    transform: translateY(-20px);
}

.cta-content {
    flex: 1;
}

.cta-content h2 {
    font-size: 28px;
    font-weight: bold;
    color: #333;
    margin-bottom: 12px;
}

.cta-content p {
    font-size: 15px;
    color: #666;
    margin-bottom: 24px;
    line-height: 1.6;
}

.cta-content strong {
    color: #5b7ffd;
}

.cta-btn {
    background: #333;
    color: #fff;
    padding: 14px 40px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.footer {
    background: #1a1a1a;
    padding: 60px 0 30px;
    color: #999;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-column ul li a {
    font-size: 14px;
    color: #999;
    transition: color 0.3s;
}

.footer-column ul li a:hover {
    color: #5b7ffd;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 30px;
    text-align: center;
    font-size: 13px;
    color: #666;
}

.footer-bottom a {
    color: #5b7ffd;
}

@media (max-width: 992px) {
    .hero-content-wrapper {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-right {
        width: 100%;
    }
    
    .feature-card {
        width: calc(50% - 8px);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .platform-content {
        flex-direction: column;
    }
    
    .platform-right img {
        width: 250px;
        height: 250px;
    }
    
    .cta-wrapper {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .hero-title {
        font-size: 30px;
    }
    
    .feature-card {
        width: 100%;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-images {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-images img:first-child {
        transform: translateY(0);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

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

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

.feature-icon.icon-blue {
    background: linear-gradient(135deg, #5b7ffd 0%, #7c5bfd 100%);
    color: #fff;
}

.feature-icon.icon-green {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    color: #fff;
}

.feature-icon.icon-purple {
    background: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
    color: #fff;
}

.feature-icon.icon-orange {
    background: linear-gradient(135deg, #f97316 0%, #fb923c 100%);
    color: #fff;
}

.feature-icon-lg {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon-lg svg {
    width: 36px;
    height: 36px;
}

.feature-icon-lg.icon-blue {
    background: linear-gradient(135deg, #e8f0fe 0%, #e0e7ff 100%);
    color: #5b7ffd;
}

.feature-icon-lg.icon-green {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #10b981;
}

.feature-icon-lg.icon-purple {
    background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
    color: #8b5cf6;
}

.platform-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.platform-icon svg {
    width: 24px;
    height: 24px;
}

.platform-icon.icon-blue {
    background: linear-gradient(135deg, #e8f0fe 0%, #e0e7ff 100%);
    color: #5b7ffd;
}

.platform-icon.icon-green {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #10b981;
}

.platform-icon.icon-purple {
    background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
    color: #8b5cf6;
}

.platform-illustration {
    width: 350px;
    height: 350px;
}

.platform-illustration svg {
    width: 100%;
    height: 100%;
}

.cta-illustration {
    width: 180px;
    height: 220px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.cta-illustration svg {
    width: 100%;
    height: 100%;
}

.cta-illustration:first-child {
    transform: translateY(-20px);
}

@media (max-width: 992px) {
    .platform-illustration {
        width: 280px;
        height: 280px;
    }
}

@media (max-width: 768px) {
    .cta-illustration:first-child {
        transform: translateY(0);
    }
}