/* 
   闪连VPN官方下载落地页样式表
   极致精简，确保加载速度，全本地化
*/

:root {
    --primary-color: #f59e0b;
    --primary-hover: #d97706;
    --secondary-color: #f8fafc;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --bg-light: #f1f5f9;
    --white: #ffffff;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

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

/* 容器 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-large {
    padding: 14px 32px;
    font-size: 1.1rem;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 15px 0;
}

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

.logo img {
    max-height: 50px;
    object-fit: contain;
}

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

.nav-links a {
    color: var(--text-main);
    font-weight: 500;
}

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

/* 英雄区 */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #fffbeb 0%, #ffffff 100%);
    overflow: hidden;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-title {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-main);
}

.hero-title .highlight {
    color: var(--primary-color);
    font-size: 2.2rem;
    display: block;
    margin-top: 10px;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.hero-actions {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.hero-note {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.placeholder-img {
    width: 100%;
    height: 400px;
    background-color: #e2e8f0;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-weight: bold;
}

/* 通用区块样式 */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 50px;
    font-size: 1.1rem;
}

.bg-light {
    background-color: var(--secondary-color);
}

/* 客户端下载展示区 */
.client-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.client-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px 20px;
    text-align: center;
    transition: var(--transition);
}

.client-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    border-color: var(--primary-color);
}

.client-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background-color: var(--bg-light);
    border-radius: 16px;
    /* 实际使用时替换为本地图标背景图或内联SVG */
    display: flex;
    align-items: center;
    justify-content: center;
}

.client-icon::before {
    content: '';
    display: block;
    width: 32px;
    height: 32px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

/* 占位图标样式，实际需替换为真实图片或SVG */
.win-icon::before { background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23f59e0b"><path d="M0 3.449L9.75 2.1v9.451H0m10.949-9.602L24 0v11.4H10.949M0 12.6h9.75v9.451L0 20.699M10.949 12.6H24V24l-12.951-1.801"/></svg>'); }
.mac-icon::before { background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23f59e0b"><path d="M12 2C6.477 2 2 6.477 2 12s4.477 10 10 10 10-4.477 10-10S17.523 2 12 2zm0 18c-4.411 0-8-3.589-8-8s3.589-8 8-8 8 3.589 8 8-3.589 8-8 8z"/></svg>'); }
.android-icon::before { background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23f59e0b"><path d="M17.523 15.3414c-.5511 0-.9993-.4486-.9993-.9997s.4483-.9993.9993-.9993c.5511 0 .9993.4482.9993.9993.0004.5511-.4482.9997-.9993.9997m-11.046 0c-.5511 0-.9993-.4486-.9993-.9997s.4482-.9993.9993-.9993c.5511 0 .9993.4482.9993.9993 0 .5511-.4482.9997-.9993.9997m11.4045-6.02l1.9973-3.4592a.416.416 0 00-.1521-.5676.416.416 0 00-.5676.1521l-2.0223 3.503C15.5902 8.244 13.8533 7.8512 12 7.8512s-3.5902.3928-5.1367 1.0989l-2.0223-3.503a.416.416 0 00-.5676-.1521.416.416 0 00-.1521.5676l1.9973 3.4592C2.6889 11.1867.3432 14.6589 0 18.761h24c-.3432-4.1021-2.6889-7.5743-6.1185-9.4396"/></svg>'); }
.ios-icon::before { background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23f59e0b"><path d="M12 2C6.477 2 2 6.477 2 12s4.477 10 10 10 10-4.477 10-10S17.523 2 12 2zm0 18c-4.411 0-8-3.589-8-8s3.589-8 8-8 8 3.589 8 8-3.589 8-8 8z"/></svg>'); }

.client-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.client-card p {
    color: var(--text-muted);
    margin-bottom: 25px;
}

/* 用户评价区 */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.review-card {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.stars {
    color: #fbbf24;
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.review-text {
    font-style: italic;
    margin-bottom: 20px;
    color: var(--text-main);
}

.reviewer {
    display: flex;
    flex-direction: column;
}

.reviewer strong {
    color: var(--text-main);
}

.reviewer span {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* FAQ 区 */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 20px 0;
    background: none;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    padding-bottom: 20px;
    color: var(--text-muted);
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-item.active .icon {
    transform: rotate(45deg);
}

.icon {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

/* 页脚 */
.footer {
    background-color: #0f172a;
    color: #94a3b8;
    padding: 80px 0 20px;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand {
    flex: 1;
    min-width: 250px;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--white);
    margin-bottom: 15px;
}

.footer-links {
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
}

.link-group h4 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.link-group a {
    display: block;
    color: #94a3b8;
    margin-bottom: 10px;
}

.link-group a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #1e293b;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* 移动端可以考虑添加汉堡菜单，此处为极简处理 */
    }
    
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-title .highlight {
        font-size: 1.8rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .footer-container {
        flex-direction: column;
    }
}