/* ========== 全局样式重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    cursor: none;
}

/* ========== CSS 变量定义 ========== */
:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --accent: #48dbfb;
    --dark: #0a0e27;
    --darker: #030711;
    --light: #ffffff;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

/* ========== 鼠标轨迹画布 ========== */
#trailCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9998;
}

/* ========== 自定义鼠标效果 ========== */
.cursor {
    width: 20px;
    height: 20px;
    border: 2px solid var(--accent);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 10000;
    transition: transform 0.1s ease;
    mix-blend-mode: difference;
    box-shadow: 0 0 20px rgba(72, 219, 251, 0.5);
}

.cursor-follower {
    width: 40px;
    height: 40px;
    background: radial-gradient(circle, rgba(72, 219, 251, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.3s ease;
}

.cursor-glow {
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.15) 0%, transparent 50%);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 1;
    transition: transform 0.5s ease;
    filter: blur(40px);
}

/* ========== 基础样式 ========== */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #000;
    color: var(--light);
    overflow-x: hidden;
    position: relative;
}

/* ========== 背景效果 ========== */
/* 高端渐变背景 */
.gradient-bg {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -2;
    background: linear-gradient(125deg, #000428 0%, #004e92 100%);
}

/* 动态极光效果 */
.aurora {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    opacity: 0.4;
}

.aurora::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 70%, rgba(255, 119, 198, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(120, 219, 255, 0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 30% 80%, rgba(120, 255, 119, 0.2) 0%, transparent 50%);
    animation: aurora 20s ease-in-out infinite;
}

@keyframes aurora {
    0%, 100% {
        transform: rotate(0deg) scale(1);
        filter: hue-rotate(0deg);
    }
    25% {
        transform: rotate(90deg) scale(1.1);
        filter: hue-rotate(45deg);
    }
    50% {
        transform: rotate(180deg) scale(1);
        filter: hue-rotate(90deg);
    }
    75% {
        transform: rotate(270deg) scale(1.1);
        filter: hue-rotate(135deg);
    }
}

/* 动态粒子背景 */
.particles {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: particleFloat linear infinite;
}

@keyframes particleFloat {
    from {
        transform: translateY(100vh) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    to {
        transform: translateY(-10vh) translateX(100px);
        opacity: 0;
    }
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 100;
    transition: all 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.navbar.scrolled {
    padding: 15px 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 15px;
    position: relative;
}

.logo-wrapper::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--primary));
    transition: width 0.5s ease;
}

.logo-wrapper:hover::after {
    width: 100%;
}

.logo-text {
    font-size: 28px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 3px;
}

.nav-menu {
    display: flex;
    gap: 50px;
    align-items: center;
    list-style: none;
}

.nav-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.5px;
    position: relative;
    transition: all 0.3s ease;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--light);
}

.nav-link:hover::before {
    width: 100%;
}

.nav-cta {
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50px;
    color: white;
    text-decoration: none;
    font-weight: 600;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.nav-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.nav-cta:hover::before {
    width: 300px;
    height: 300px;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.4);
}

/* ========== 英雄区域 ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* 动态光线效果 */
.light-rays {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    opacity: 0.3;
}

.light-ray {
    position: absolute;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, transparent, rgba(72, 219, 251, 0.8), transparent);
    animation: lightMove 15s linear infinite;
}

.light-ray:nth-child(1) { left: 10%; animation-delay: 0s; }
.light-ray:nth-child(2) { left: 30%; animation-delay: 3s; }
.light-ray:nth-child(3) { left: 50%; animation-delay: 6s; }
.light-ray:nth-child(4) { left: 70%; animation-delay: 9s; }
.light-ray:nth-child(5) { left: 90%; animation-delay: 12s; }

@keyframes lightMove {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(100%);
    }
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    font-size: 13px;
    color: var(--accent);
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(72, 219, 251, 0.4); }
    50% { box-shadow: 0 0 20px 10px rgba(72, 219, 251, 0); }
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--light) 0%, var(--primary) 50%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 50px;
}

.hero-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.btn-primary {
    padding: 18px 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: 60px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: none;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    transform: translate(-50%, -50%) scale(0);
    border-radius: 60px;
    transition: transform 0.5s ease;
    z-index: -1;
}

.btn-primary:hover::after {
    transform: translate(-50%, -50%) scale(1);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    padding: 18px 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 60px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    cursor: none;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(72, 219, 251, 0.3);
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat-item {
    text-align: left;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
}

.stat-label {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 3D 应用预览 */
.hero-visual {
    perspective: 1000px;
    animation: fadeInUp 1s ease 0.3s both;
}

.app-mockup {
    width: 100%;
    max-width: 550px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 30px;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    transform-style: preserve-3d;
    transition: transform 0.3s ease;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.5),
        inset 0 0 60px rgba(102, 126, 234, 0.1);
}

.app-mockup:hover {
    transform: rotateY(-5deg) rotateX(5deg);
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 15px 15px 0 0;
    margin: -40px -40px 30px -40px;
}

.mockup-dots {
    display: flex;
    gap: 8px;
}

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

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28ca42; }

.mockup-content {
    text-align: center;
    padding: 30px 0;
}

.click-display {
    font-size: 4rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 30px 0;
    filter: drop-shadow(0 0 30px rgba(72, 219, 251, 0.5));
}

.mockup-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 30px 0;
}

.stat-box {
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ========== 功能区域 ========== */
.features {
    padding: 150px 40px;
    position: relative;
    background: rgba(0, 0, 0, 0.5);
}

.section-header {
    text-align: center;
    margin-bottom: 100px;
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    font-size: 13px;
    color: var(--accent);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    background: linear-gradient(135deg, var(--light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
}

.section-desc {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.7);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 30px;
    padding: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    transform-style: preserve-3d;
    cursor: none;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at var(--mouse-x) var(--mouse-y), rgba(102, 126, 234, 0.15) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-10px) rotateX(5deg);
    border-color: var(--primary);
    box-shadow: 
        0 30px 60px rgba(102, 126, 234, 0.3),
        inset 0 0 60px rgba(102, 126, 234, 0.05);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    margin-bottom: 30px;
    position: relative;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.feature-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: inherit;
    border-radius: inherit;
    filter: blur(20px);
    opacity: 0.4;
    z-index: -1;
}

.feature-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-desc {
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
    font-size: 1rem;
}

/* ========== 运行模式展示 ========== */
.modes-section {
    padding: 150px 40px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(72, 219, 251, 0.05));
}

.modes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.mode-card {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    transition: all 0.3s ease;
}

.mode-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.2);
}

.mode-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.mode-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ========== 技术展示区 ========== */
.tech-showcase {
    padding: 150px 40px;
    position: relative;
    overflow: hidden;
}

.showcase-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
}

.showcase-visual {
    position: relative;
}

.code-window {
    background: rgba(0, 0, 0, 0.7);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 30px;
    backdrop-filter: blur(20px);
    font-family: 'Fira Code', monospace;
    position: relative;
    transform: perspective(1000px) rotateY(-10deg);
    transition: transform 0.3s ease;
}

.code-window:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.code-line {
    color: rgba(255, 255, 255, 0.8);
    margin: 10px 0;
    font-size: 14px;
    opacity: 0;
    animation: codeFade 0.5s ease forwards;
}

.code-line:nth-child(1) { animation-delay: 0.1s; }
.code-line:nth-child(2) { animation-delay: 0.2s; }
.code-line:nth-child(3) { animation-delay: 0.3s; }
.code-line:nth-child(4) { animation-delay: 0.4s; }
.code-line:nth-child(5) { animation-delay: 0.5s; }

@keyframes codeFade {
    to {
        opacity: 1;
    }
}

.code-keyword { color: var(--primary); }
.code-string { color: var(--accent); }
.code-number { color: #f39c12; }
.code-comment { color: rgba(255, 255, 255, 0.4); }

.showcase-content h3 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tech-features {
    list-style: none;
    margin-top: 40px;
}

.tech-features li {
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
}

.tech-features li:hover {
    padding-left: 10px;
    border-color: var(--primary);
}

.tech-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

/* ========== 下载区域 ========== */
.download {
    padding: 150px 40px;
    text-align: center;
    position: relative;
}

.download-container {
    max-width: 900px;
    margin: 0 auto;
}

.download-box {
    background: rgba(102, 126, 234, 0.05);
    border-radius: 40px;
    padding: 80px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.download-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(72, 219, 251, 0.1) 0%, transparent 50%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.download-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--light), var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.download-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin: 50px 0;
}

.download-stat {
    position: relative;
}

.download-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent);
    display: block;
}

.download-label {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.download-btn {
    padding: 25px 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: 60px;
    color: white;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-top: 40px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.4);
    cursor: none;
}

.download-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px rgba(102, 126, 234, 0.6);
}

/* ========== 联系作者区域 ========== */
.contact-section {
    padding: 150px 40px;
    background: linear-gradient(135deg, rgba(72, 219, 251, 0.02), rgba(102, 126, 234, 0.05));
    position: relative;
}

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

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-top: 80px;
}

.contact-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 30px;
    padding: 50px 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(72, 219, 251, 0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.contact-card:hover::before {
    opacity: 1;
}

.contact-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 20px 40px rgba(72, 219, 251, 0.2);
    border-color: var(--accent);
}

.contact-icon {
    font-size: 48px;
    margin-bottom: 25px;
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.contact-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-info {
    font-size: 1.2rem;
    color: var(--light);
    margin-bottom: 15px;
    font-weight: 600;
}

.contact-desc {
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

.contact-message {
    margin-top: 60px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ========== 页脚 ========== */
footer {
    padding: 80px 40px 40px;
    background: rgba(0, 0, 0, 0.8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.8;
}

.footer-column h4 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.8);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin: 15px 0;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-column a:hover {
    color: var(--accent);
    padding-left: 5px;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .hero-container,
    .showcase-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }

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

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

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

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hero-title {
        font-size: 3rem;
    }

    .download-box {
        padding: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .contact-card {
        padding: 40px 30px;
    }
}

/* ========== 滚动动画 ========== */
.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ========== 其他效果 ========== */
/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 选择文本样式 */
::selection {
    background: var(--primary);
    color: white;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #000;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
}