/* 基础样式 */
:root {
    --primary-color: #a020f0;
    --secondary-color: #6a11cb;
    --text-color: #ffffff;
    --bg-color: #000000;
    --card-bg: #1a1a1a;
    --header-height: 70px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

/* 头部导航 */
header {
    padding: 20px 0;
    background-color: rgba(0, 0, 0, 0.95);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 101;
}

.logo img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.logo span {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
}

.main-nav {
    display: flex;
    gap: 30px;
}

.main-nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: 10px;
    cursor: pointer;
}

.menu-toggle svg {
    width: 24px;
    height: 24px;
    stroke: white;
}

/* Hero 区域 */
.hero-section {
    text-align: center;
    padding: calc(var(--header-height) + 40px) 0 40px;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.hero-content {
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.hero-description {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
}

.primary-button,
.download-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: linear-gradient(135deg, #9333EA 0%, #4F46E5 100%);
    color: white;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    gap: 8px;
}

.primary-button:hover,
.download-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
}

.primary-button img,
.download-button img {
    width: 24px;
    height: 24px;
    filter: brightness(0) invert(1);
}

.download-count {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.download-count .number {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.download-count .text {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.hero-image {
    max-width: 300px;
}

.phone-mockup {
    width: 100%;
    max-width: 300px;
}

.phone-mockup img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* 特性区域 */
.features-section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.feature-icon img,
.feature-icon svg {
    width: 24px;
    height: 24px;
    filter: brightness(0) invert(1);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.feature-card p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin: 0;
}

/* 展示区域 */
.showcase-section {
    padding: 30px 0 15px;
    background-color: transparent;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.showcase-section::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

.showcase-grid {
    display: flex;
    flex-wrap: nowrap;
    gap: 4px;
    margin: 0 auto;
    max-width: 100%;
    padding: 0 20px;
    justify-content: center;
}

.showcase-item {
    position: relative;
    overflow: hidden;
    background: transparent;
    transition: transform 0.3s ease;
    aspect-ratio: 9/19;
    width: 87%;
    flex: 0 0 auto;
    max-width: 319px;
}

.showcase-item:hover {
    transform: translateY(-5px);
}

.showcase-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.showcase-caption {
    margin-top: 5px;
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    font-weight: 500;
    font-size: 0.9rem;
}

/* 下载区域 */
.download-section {
    padding: 60px 0;
    text-align: center;
}

.download-content h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.download-content p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
}

/* 页脚 */
footer {
    background: var(--card-bg);
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

footer .container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

footer p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    margin: 0;
}

footer p a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

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

.back-home {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s ease;
    z-index: 100;
}

.back-home:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(147, 51, 234, 0.3);
}

.back-home svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.terms-content {
    padding: 20px;
    max-width: 960px;
    margin: 0 auto;
    color: #fff;
}

.terms-content h1 {
    color: #fff;
    margin-top: 20px;
    margin-bottom: 15px;
    font-size: 2.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        width: 95%;
        padding: 15px;
    }

    header {
        padding: 15px 0;
    }

    .menu-toggle {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 280px;
        background: rgba(0, 0, 0, 0.98);
        padding: calc(var(--header-height) + 20px) 20px 20px;
        flex-direction: column;
        gap: 0;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 999;
    }

    .main-nav.active {
        transform: translateX(0);
    }

    .main-nav a {
        display: block;
        padding: 16px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        font-size: 18px;
    }

    .main-nav a:last-child {
        border-bottom: none;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .primary-button,
    .download-button {
        width: 100%;
        max-width: 280px;
    }

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

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

    .showcase-grid {
        justify-content: flex-start;
        padding: 0 15px;
        gap: 3px;
    }

    .footer-links {
        flex-direction: column;
        gap: 15px;
    }

    .showcase-item {
        max-width: 274px;
    }

    .showcase-section {
        padding: 20px 0 10px;
    }
    
    .section-title {
        margin-bottom: 25px;
    }

    .back-home {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
    
    .back-home svg {
        width: 16px;
        height: 16px;
    }
    
    .terms-content h1 {
        font-size: 2rem;
        margin-top: 15px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .feature-card {
        flex-direction: column;
        text-align: center;
    }

    .feature-icon {
        margin: 0 auto;
    }

    .showcase-grid {
        gap: 2px;
        padding: 0 10px;
    }
    
    .showcase-item {
        max-width: 228px;
    }
    
    .showcase-caption {
        margin-top: 3px;
        font-size: 0.8rem;
    }

    .showcase-section {
        padding: 15px 0 8px;
    }
    
    .section-title {
        margin-bottom: 20px;
    }

    .back-home {
        padding: 5px 10px;
        font-size: 0.85rem;
    }
    
    .back-home svg {
        width: 14px;
        height: 14px;
    }
    
    .terms-content h1 {
        font-size: 1.8rem;
        margin-top: 10px;
    }
}