/* Base Styles */
:root {
    --primary-color: #4a90e2;
    --secondary-color: #2c3e50;
    --text-color: #333;
    --background-color: #fff;
}

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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

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

/* Header Styles */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    z-index: 100;
    background: rgba(0, 0, 0, 0.5);
}

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

.header__logo {
    height: 40px;
    width: auto;
}

.header__title {
    color: #fff;
    font-size: 1.5rem;
    margin: 0;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

.hero__video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero__video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding-top: 40vh;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.hero__content h1 {
    font-size: 4rem;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    margin-bottom: 1rem;
}

.hero__content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.hero__buttons {
    display: flex;
    gap: 1.5rem;
}

/* Button Styles */
.button {
    display: inline-block;
    padding: 1.2rem 3rem;
    border-radius: 50px;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: bold;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.button--primary {
    background: #4a90e2;
    color: white;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
}

.button--primary:hover {
    background: #357abd;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav__menu {
        display: none;
    }
    
    .hero__content {
        padding-top: 30vh;
    }

    .hero__content h1 {
        font-size: 2.5rem;
    }

    .hero__content p {
        font-size: 1.2rem;
    }

    .button {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
}

/* Introduction Section */
.intro {
    padding: 6rem 0;
    background-color: var(--background-color);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

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

.intro__description {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

.intro__video-player {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* Features Section */
.features {
    padding: 6rem 0;
    background-color: #f8f9fa;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

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

.feature-card__image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.feature-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.feature-card__content {
    padding: 1.5rem;
}

.feature-card__content h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.feature-card__content p {
    color: #666;
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .intro__grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .features__grid {
        grid-template-columns: 1fr;
    }

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

/* 修改视频相关的CSS */
.intro__video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 宽高比 */
    height: 0;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.intro__video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* Media Section */
.media {
    padding: 6rem 0;
    background-color: var(--background-color);
}

.media__subtitle {
    font-size: 1.5rem;
    margin: 2rem 0;
    text-align: center;
}

.media__video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.media__video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 8px;
}

.media__video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* 修改 Media Section 中的截图网格布局 */
.media__screenshot-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 改为固定2列 */
    gap: 2rem; /* 增加间距 */
    max-width: 1200px; /* 限制最大宽度 */
    margin: 0 auto;
}

.media__screenshot {
    border-radius: 12px; /* 增加圆角 */
    overflow: hidden;
    transition: transform 0.3s ease;
    aspect-ratio: 16/9; /* 固定宽高比 */
}

.media__screenshot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media__screenshot:hover {
    transform: scale(1.02);
}



/* Purchase Section */
.purchase {
    padding: 6rem 0;
    background-color: #f8f9fa;
}

.purchase__content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.purchase__info {
    padding: 2rem;
}

.purchase__features {
    list-style: none;
    margin: 2rem 0;
}

.purchase__features li {
    margin: 1rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.purchase__features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.purchase__options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.purchase__card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    text-align: center;
    position: relative;
}

.purchase__card--featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.purchase__card-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
}

.purchase__price {
    font-size: 2.5rem;
    font-weight: bold;
    margin: 1.5rem 0;
    color: var(--secondary-color);
}

.purchase__benefits {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
}

.purchase__benefits li {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.purchase__benefits li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 968px) {
    .purchase__content {
        grid-template-columns: 1fr;
    }

    .purchase__options {
        grid-template-columns: 1fr;
    }

    .purchase__card--featured {
        transform: none;
    }
}

@media (max-width: 768px) {
    .media__video-grid {
        grid-template-columns: 1fr;
    }
}

/* SEO Content Section Styles */
.seo-content {
    padding: 6rem 0;
    background-color: #f9f9f9;
}

.seo-article {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.seo-article h2 {
    color: var(--secondary-color);
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
}

.seo-article h3 {
    color: var(--secondary-color);
    font-size: 1.5rem;
    margin: 1.5rem 0 1rem;
}

.seo-article h4 {
    color: var(--secondary-color);
    font-size: 1.2rem;
    margin: 1.2rem 0 0.8rem;
}

.seo-article p {
    margin-bottom: 1.2rem;
    line-height: 1.8;
    color: #444;
}

.seo-metadata {
    margin-top: 3rem;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.seo-metadata ul {
    list-style: none;
    padding: 0;
}

.seo-metadata li {
    margin: 0.5rem 0;
    color: #666;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .seo-article {
        padding: 1rem;
    }
    
    .seo-article h2 {
        font-size: 1.6rem;
    }
    
    .seo-article h3 {
        font-size: 1.3rem;
    }
}