html {
    scroll-behavior: smooth;
}
:root {
    /* 基于截图调整的颜色方案 */
    --color-bg: #0a0a0a;
    --color-gradient-1: #7b2cbf; /* 紫色 */
    --color-gradient-2: #00f5d4; /* 青色 */
    --color-text: #ffffff;
    --color-text-muted: rgba(255, 255, 255, 0.7);
    --header-height: 64px;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

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

/* Header 样式 */
.header {
    height: 64px;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header__nav {
    height: 100%;
    display: flex;
    align-items: center;
}

.header__brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--color-text);
    gap: 1rem;
}

.header__logo {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.header__title {
    font-size: 1.25rem;
    font-weight: 600;
    background: linear-gradient(to right, var(--color-gradient-1), var(--color-gradient-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* 适配移动设备 */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .header__title {
        font-size: 1.1rem;
    }
}

/* Hero 部分 */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    background-image: url('hero.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

/* 添加轻微的遮罩层 */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 10, 0.2); /* 降低透明度到0.3 */
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero__title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.2;
    text-align: center;
    margin-bottom: 3rem;
}

.gradient-text {
    background: linear-gradient(to right, var(--color-gradient-1), var(--color-gradient-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Counter 部分 */
.counter {
    text-align: center;
}

.counter__wrapper {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.counter__number {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    font-family: 'Monaco', monospace;
    color: var(--color-gradient-2);
}

.counter__plus {
    font-size: 2rem;
    color: var(--color-gradient-1);
    font-weight: 700;
}

.counter__text {
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

/* 数字翻转动画 */
@keyframes countUp {
    0% {
        transform: translateY(100%);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

.counter__number.animate {
    animation: countUp 0.5s ease-out;
}

/* Alternatives Section */
.alternatives {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    background: linear-gradient(to right, var(--color-gradient-1), var(--color-gradient-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

/* 卡片样式 */
.alternative-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: block;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.alternative-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 0.05);
}

.alternative-card:active {
    transform: translateY(0);
    transition: transform 0.1s;
}

.alternative-card__header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.alternative-card__logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.alternative-card__title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
}

.alternative-card__description {
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.alternative-card__subtitle {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gradient-2);
}

.alternative-card__text {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .alternatives__grid {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }
    
    .alternative-card {
        padding: 1.25rem;
    }
}

/* Hero部分补充样式 */
.hero__cta {
    margin-top: 3rem;
    text-align: center;
}

/* 渐变按钮样式 */
.gradient-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--color-text);
    background: linear-gradient(
        45deg,
        var(--color-gradient-1),
        var(--color-gradient-2)
    );
    border-radius: 50px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(123, 44, 191, 0.3);
}

.gradient-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        45deg,
        var(--color-gradient-2),
        var(--color-gradient-1)
    );
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gradient-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(123, 44, 191, 0.4);
}

.gradient-button:hover::before {
    opacity: 1;
}

.gradient-button span {
    position: relative;
    z-index: 1;
}

/* Content Section Styles */
.content {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.02);
}

.content__main {
    max-width: 800px;
    margin: 0 auto;
}

.content__main h2 {
    color: var(--color-gradient-2);
    font-size: 1.8rem;
    margin: 2.5rem 0 1.5rem;
}

.content__main h3 {
    color: var(--color-gradient-1);
    font-size: 1.4rem;
    margin: 2rem 0 1rem;
}

.content__main h4 {
    color: var(--color-text);
    font-size: 1.2rem;
    margin: 1.5rem 0 1rem;
}

.content__main p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--color-text-muted);
}

.content__main ul {
    margin: 1rem 0 2rem 2rem;
    color: var(--color-text-muted);
}

.content__main li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}
/* FAQ Section Styles */
.faq {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.02);
}

.faq__grid {
    display: grid;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.faq__item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
}

.faq__item h3 {
    color: var(--color-gradient-2);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.faq__item p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .faq__grid {
        gap: 1rem;
        padding: 0 1rem;
    }
    
    .faq__item {
        padding: 1.25rem;
    }
}
/* Video Section Styles */
.video-section {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.02);
}

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

.video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 宽高比 */
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.2);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 12px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .video-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
}

/* Content Images Styles */
.content__image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin: 2rem 0;
}

.content__figure {
    margin: 0;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.03);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.content__image {
    width: 100%;
    height: 240px;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.content__figure:hover .content__image {
    transform: scale(1.05);
}

.content__figure figcaption {
    padding: 1rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    background: rgba(0, 0, 0, 0.8);
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    backdrop-filter: blur(4px);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .content__image-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }

    .content__image {
        height: 200px;
    }
}