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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

:root {
    --primary-color: #3B82F6;
    --secondary-color: #1E40AF;
    --text-color: #1F2937;
    --light-bg: #F3F4F6;
    --white: #FFFFFF;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.navbar {
    padding: 1rem 0;
}

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

.logo-link {
    display: flex;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.index {
    padding: 8rem 0 4rem;
    background: linear-gradient(to bottom, var(--white) 0%, var(--light-bg) 100%);
}

.split-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.left-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.main-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-color);
}

.LiCai {
    color: var(--primary-color);
    position: relative;
}

.LiCai::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 8px;
    background: var(--primary-color);
    opacity: 0.2;
    border-radius: 4px;
}

.tag-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.tag-item {
    background: var(--light-bg);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-color);
    transition: var(--transition);
}

.tag-item:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.main-title-sub {
    font-size: 1.25rem;
    color: #4B5563;
    max-width: 32rem;
}

.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.cta-btn {
    padding: 0.75rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    background: var(--primary-color);
    color: var(--white);
}

.cta-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.right-content img {
    width: 100%;
    height: auto;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.right-content img:hover {
    transform: scale(1.02);
}

.introduce {
    padding: 6rem 0;
    background: var(--white);
}

.introduce-top {
    text-align: center;
    margin-bottom: 4rem;
}

.introduce-top h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.introduce-top span {
    font-size: 1.25rem;
    color: #4B5563;
}

.introduce-bottom {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.introduce-left-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.feature-item1, .feature-item2, .feature-item3 {
    padding: 2rem;
    background: var(--light-bg);
    border-radius: 1rem;
    transition: var(--transition);
}

.feature-item1:hover, .feature-item2:hover, .feature-item3:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.feature-item1-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

.feature-item2-text1 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
    display: block;
    margin-bottom: 0.5rem;
}

.feature-item2-text2 {
    color: #4B5563;
}

.feature-item3-text1 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
    display: block;
    margin-bottom: 1rem;
}

.feature-item3 ul {
    list-style: none;
    padding-left: 1rem;
}

.feature-item3 li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.feature-item3 li::before {
    content: '•';
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.feature-item4-btn {
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: fit-content;
}

.feature-item4-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.introduce-right img {
    width: 100%;
    height: auto;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.upcoming {
    padding: 6rem 0;
    background: var(--light-bg);
}

.upcoming-top {
    text-align: center;
    margin-bottom: 4rem;
}

.upcoming-top h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.upcoming-top span {
    font-size: 1.25rem;
    color: #4B5563;
}

.upcoming-middle {
    margin-bottom: 4rem;
}

.upcoming-middle-f {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.upcoming-left {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.upcoming-left h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
}

.upcoming-left p {
    font-size: 1.125rem;
    color: #4B5563;
}

.priority-btn {
    padding: 0.75rem 2rem;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: fit-content;
}

.priority-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.upcoming-right {
    display: grid;
    gap: 1.5rem;
}

.upcoming-right-con1, .upcoming-right-con2, .upcoming-right-con3 {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 1rem;
    transition: var(--transition);
}

.upcoming-right-con1:hover, .upcoming-right-con2:hover, .upcoming-right-con3:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.upcoming-right-con1 p, .upcoming-right-con2 p, .upcoming-right-con3 p {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.upcoming-right-con1 span, .upcoming-right-con2 span, .upcoming-right-con3 span {
    color: #4B5563;
}

.upcoming-bottom {
    display: flex;
    gap: 1rem;
    justify-content: center;
    max-width: 32rem;
    margin: 0 auto;
}

.email-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid #E5E7EB;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: var(--transition);
}

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

.upcoming-bottom-btn {
    padding: 0.75rem 2rem;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.upcoming-bottom-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.footer {
    background: var(--text-color);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.footer-left h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-right {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    color: var(--white);
    font-size: 1.5rem;
    transition: var(--transition);
}

.footer-social a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 1024px) {
    .split-container,
    .introduce-bottom,
    .upcoming-middle-f {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .right-content,
    .introduce-right {
        order: -1;
    }

    .main-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .button-group {
        flex-direction: column;
    }

    .upcoming-bottom {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }

    .footer-social {
        justify-content: center;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
}
}

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

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