:root {
    --primary-color: #2D2D2D;
    --accent-color: #FFC300;
    --text-color: #333333;
    --background-color: #FFFFFF;
    --secondary-background: #F5F5F7;
    --gradient-start: #2D2D2D;
    --gradient-end: #1A1A1A;
    --button-gradient-start: #FFC300;
    --button-gradient-end: #FF9900;
    --accent-shadow-color: rgba(255, 195, 0, 0.25);
    --accent-bg-color: rgba(255, 195, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100%;
    overflow-x: hidden;
    position: relative;
}

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

.header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-links a {
    margin-left: 30px;
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, var(--secondary-background) 0%, #e9ecef 100%);
    overflow: hidden;
    text-align: center;
}

.hero .container {
    max-width: 900px;
}

.hero-content {
    margin-bottom: 60px;
}

.hero-content h1 {
    font-size: 56px;
    line-height: 1.2;
    margin-bottom: 24px;
    background: linear-gradient(var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 32px;
}

.download-info {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 500;
}

.hero-decoration {
    margin: 0 auto;
    max-width: 400px;
}

.menu-bar {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(8px);
}

.menu-bar-icon {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 4px;
}

.menu-bar-icon span {
    width: 16px;
    height: 2px;
    background: var(--accent-color);
    border-radius: 2px;
}

.typing-animation {
    position: relative;
    color: var(--primary-color);
    min-height: 24px;
    display: flex;
    align-items: center;
}

.typing-text {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    border-right: 2px solid var(--accent-color);
    animation: blink-caret 0.75s step-end infinite;
    margin: 0;
    font-size: 15px;
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--accent-color) }
}

.subtitle {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 40px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--button-gradient-start), var(--button-gradient-end));
    color: var(--primary-color);
    padding: 16px 32px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px var(--accent-shadow-color);
    border: none;
    font-size: 16px;
    min-width: 180px;
}

.main-download-btn {
    padding: 16px 40px;
    font-size: 18px;
    min-width: 240px;
    font-weight: 600;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px var(--accent-shadow-color);
}

.features {
    padding: 100px 0;
    background: var(--background-color);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: var(--primary-color);
}

.features-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.features-category {
    background: white;
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.features-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}

.category-icon {
    font-size: 28px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-bg-color);
    border-radius: 16px;
    box-shadow: 0 8px 16px var(--accent-shadow-color);
}

.category-title {
    color: var(--primary-color);
    font-size: 1.75rem;
    font-weight: 600;
    margin: 0;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.feature-icon {
    font-size: 24px;
    min-width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-bg-color);
    border-radius: 12px;
    box-shadow: 0 6px 12px var(--accent-shadow-color);
}

.feature-content {
    flex: 1;
}

.feature-content h4 {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.feature-content p {
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
    opacity: 0.8;
}

@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }

    .features-category {
        padding: 30px;
    }

    .category-header {
        margin-bottom: 24px;
    }

    .category-icon {
        width: 48px;
        height: 48px;
        font-size: 24px;
    }

    .category-title {
        font-size: 1.5rem;
    }

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

    .feature-item {
        padding: 20px;
    }

    .feature-icon {
        min-width: 40px;
        height: 40px;
        font-size: 20px;
    }
}

.download {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--secondary-background) 0%, #e9ecef 100%);
}

.download h2 {
    margin-bottom: 40px;
    background: linear-gradient(var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.download-wrapper {
    max-width: 400px;
    margin: 0 auto;
    padding: 40px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(8px);
}

.download-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 8px 0;
    width: 100%;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    font-size: 18px;
    min-width: 240px;
}

.download-icon {
    transition: transform 0.3s ease;
}

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

.version {
    margin-top: 20px;
    color: var(--primary-color);
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.system-req {
    display: none;
}

.beta-tag {
    background-color: var(--accent-color);
    color: var(--primary-color);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    margin-left: 8px;
}

.footer {
    background-color: var(--secondary-background);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.divider {
    color: var(--primary-color);
    opacity: 0.2;
}

.contact-link {
    color: var(--accent-color) !important;
    font-weight: 500;
}

.copyright {
    color: var(--primary-color);
    opacity: 0.8;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }

    .divider {
        display: none;
    }
}

.scenarios {
    padding: 100px 0;
    background: var(--background-color);
}

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

.scenario-card {
    background: white;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.scenario-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--accent-color);
}

.scenario-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 40px;
    }
    
    .hero-decoration {
        max-width: 300px;
    }
}

html {
    scroll-behavior: smooth;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    height: 32px;
    width: 32px;
    object-fit: contain;
    display: block;
}

.logo-text {
    font-weight: 600;
    font-size: 20px;
    color: var(--primary-color);
    margin-left: 8px;
}

.platform-badge {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--primary-color);
    color: white;
    padding: 12px 20px;
    border-radius: 12px;
    width: 100%;
}

.apple-icon {
    color: white;
}

.platform-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
}

.platform-name {
    font-weight: 500;
    color: white;
}

.platform-version {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
}

.install-tips {
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--accent-bg-color);
    border-radius: 8px;
    font-size: 14px;
    color: var(--primary-color);
    text-align: left;
    line-height: 1.6;
}

.install-tips strong {
    color: var(--accent-color);
    font-weight: 600;
}

.language-switch {
    display: inline-flex;
    gap: 8px;
    margin-left: 20px;
}

.language-switch button {
    background: none;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.language-switch button:hover {
    background: #f5f5f5;
}

@media (max-width: 768px) {
    .language-switch {
        margin-left: 10px;
    }
    
    .language-switch button {
        padding: 2px 6px;
        font-size: 12px;
    }
}

.feature-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.feature-title h4 {
    margin: 0;
}

.new-badge {
    background: var(--accent-color);
    color: var(--primary-color);
    font-size: 12px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    height: 20px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}