/* ===== 基础样式重置 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调 */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #06b6d4;
    --accent: #f43f5e;
    
    /* 背景色 */
    --bg-dark: #0f0f1a;
    --bg-card: #16162a;
    --bg-card-hover: #1e1e3a;
    
    /* 文字色 */
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    /* 渐变 */
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-2: linear-gradient(135deg, #06b6d4 0%, #6366f1 100%);
    --gradient-3: linear-gradient(135deg, #f43f5e 0%, #f97316 100%);
    
    /* 代码高亮 */
    --code-keyword: #c678dd;
    --code-function: #61afef;
    --code-string: #98c379;
    --code-class: #e5c07b;
    
    /* 其他 */
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(15, 15, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    font-size: 1.25rem;
}

.brand-code {
    color: var(--primary);
    font-size: 1.1rem;
}

.brand-name {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text-primary);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ===== Hero 区域 ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 10s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary);
    bottom: 10%;
    left: -50px;
    animation-delay: -3s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: var(--accent);
    top: 40%;
    right: 20%;
    animation-delay: -6s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--primary-light);
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
}

.typing-text {
    color: var(--text-primary);
}

.highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-weight: 500;
}

.hero-description {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 48px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.5);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px -10px rgba(99, 102, 241, 0.6);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.4);
}

/* ===== 代码窗口 ===== */
.code-window {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    max-width: 600px;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.code-title {
    margin-left: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.code-body {
    padding: 20px 24px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
    overflow-x: auto;
}

.code-body pre {
    margin: 0;
}

.code-keyword { color: var(--code-keyword); }
.code-function { color: var(--code-function); }
.code-string { color: var(--code-string); }
.code-class { color: var(--code-class); }

/* ===== 通用区域样式 ===== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--primary-light);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ===== 关于区域 ===== */
.about {
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(99, 102, 241, 0.03) 50%, var(--bg-dark) 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.about-card {
    background: var(--bg-card);
    padding: 40px 32px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: rgba(99, 102, 241, 0.2);
    box-shadow: 0 20px 40px -20px rgba(99, 102, 241, 0.3);
}

.about-icon {
    font-size: 3rem;
    margin-bottom: 24px;
}

.about-card h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== 平台区域 ===== */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.platform-card {
    background: var(--bg-card);
    padding: 40px 24px;
    border-radius: var(--border-radius);
    text-align: center;
    text-decoration: none;
    color: inherit;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.platform-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: currentColor;
}

.platform-card.wechat:hover {
    border-color: #07c160;
    box-shadow: 0 20px 40px -20px rgba(7, 193, 96, 0.3);
}

.platform-card.zhihu:hover {
    border-color: #0084ff;
    box-shadow: 0 20px 40px -20px rgba(0, 132, 255, 0.3);
}

.platform-card.xiaohongshu:hover {
    border-color: #ff2442;
    box-shadow: 0 20px 40px -20px rgba(255, 36, 66, 0.3);
}

.platform-card.video:hover {
    border-color: #07c160;
    box-shadow: 0 20px 40px -20px rgba(7, 193, 96, 0.3);
}

.platform-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
}

.platform-icon svg {
    width: 32px;
    height: 32px;
}

.platform-card.wechat .platform-icon {
    color: #07c160;
}

.platform-card.zhihu .platform-icon {
    color: #0084ff;
}

.platform-card.xiaohongshu .platform-icon {
    color: #ff2442;
}

.platform-card.video .platform-icon {
    color: #07c160;
}

.platform-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.platform-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.platform-btn {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
}

.platform-card:hover .platform-btn {
    background: rgba(255, 255, 255, 0.1);
}

/* ===== 特色内容区域 ===== */
.features {
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(6, 182, 212, 0.03) 50%, var(--bg-dark) 100%);
}

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

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 32px;
    padding: 32px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-item:last-child {
    border-bottom: none;
}

.feature-number {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.5;
    line-height: 1;
}

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

.feature-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== 联系区域 ===== */
.contact-card {
    background: var(--gradient-1);
    border-radius: var(--border-radius);
    padding: 64px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.contact-content {
    position: relative;
    z-index: 1;
}

.contact-card h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.contact-card > p {
    opacity: 0.9;
    margin-bottom: 32px;
    font-size: 1.1rem;
}

.contact-form {
    display: flex;
    gap: 12px;
    max-width: 500px;
    margin: 0 auto 24px;
}

.email-input {
    flex: 1;
    padding: 16px 24px;
    border: none;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    font-size: 1rem;
    outline: none;
    backdrop-filter: blur(10px);
}

.email-input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.contact-form .btn-primary {
    background: white;
    color: var(--primary);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.3);
}

.contact-form .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.4);
}

.contact-note {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ===== 页脚 ===== */
.footer {
    padding: 48px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.footer-slogan {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border-radius: 12px;
    text-decoration: none;
    font-size: 1.25rem;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.social-link:hover {
    transform: translateY(-4px);
    background: var(--bg-card-hover);
    border-color: rgba(99, 102, 241, 0.3);
}

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

/* ===== 响应式设计 ===== */
@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .contact-card {
        padding: 48px 24px;
    }
    
    .contact-form {
        flex-direction: column;
    }
    
    .feature-item {
        flex-direction: column;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .platform-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 动画效果 ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content > * {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

.hero-content > *:nth-child(1) { animation-delay: 0.1s; }
.hero-content > *:nth-child(2) { animation-delay: 0.2s; }
.hero-content > *:nth-child(3) { animation-delay: 0.3s; }
.hero-content > *:nth-child(4) { animation-delay: 0.4s; }
.hero-content > *:nth-child(5) { animation-delay: 0.5s; }
.hero-content > *:nth-child(6) { animation-delay: 0.6s; }