/* 银色未来主题 - 全局样式 */
:root {
    /* 颜色变量 */
    --primary-silver-dark: #708090;
    --primary-silver-light: #c0c0c0;
    --accent-blue: #00bfff;
    --pure-white: #ffffff;
    --dark-text: #1a202c;
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-glow: rgba(0, 191, 255, 0.4);
    
    /* 字体变量 */
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Exo 2', sans-serif;
    
    /* 间距变量 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
    
    /* 边框半径 */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    /* 动画变量 */
    --transition-fast: 0.3s ease;
    --transition-normal: 0.5s ease;
    --transition-slow: 0.8s ease;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    line-height: 1.7;
    color: var(--pure-white);
    background: linear-gradient(135deg, var(--primary-silver-dark), var(--primary-silver-light));
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* 数字矩阵雨背景 */
#matrix-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -3;
    opacity: 0.6;
}

/* 扫描线效果 */
.scan-lines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 191, 255, 0.03) 2px,
        rgba(0, 191, 255, 0.03) 4px
    );
    animation: scanline-move 4s linear infinite;
    pointer-events: none;
}

@keyframes scanline-move {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100vh); }
}

/* 电路板纹理背景 */
.circuit-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.05;
    background-image: 
        radial-gradient(circle at 25% 25%, var(--accent-blue) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, var(--accent-blue) 1px, transparent 1px),
        linear-gradient(45deg, transparent 49%, var(--accent-blue) 49%, var(--accent-blue) 51%, transparent 51%);
    background-size: 100px 100px, 100px 100px, 50px 50px;
    animation: circuit-glow 8s ease-in-out infinite alternate;
    pointer-events: none;
}

@keyframes circuit-glow {
    0% { opacity: 0.03; }
    100% { opacity: 0.08; }
}

/* 容器和布局 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 32, 44, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: var(--transition-fast);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--accent-blue);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-logo i {
    font-size: 2rem;
    animation: robot-pulse 2s ease-in-out infinite;
}

@keyframes robot-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--pure-white);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    transition: var(--transition-fast);
    padding: var(--spacing-xs) var(--spacing-sm);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: var(--transition-fast);
}

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

/* 移动端导航切换 */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--pure-white);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    position: relative;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.hero-text {
    z-index: 2;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.glow-text {
    background: linear-gradient(45deg, var(--pure-white), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.glow-text::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    background: linear-gradient(45deg, var(--pure-white), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: blur(3px);
    z-index: -1;
    opacity: 0.7;
}

.title-underline {
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue), transparent);
    margin: var(--spacing-sm) 0;
    animation: underline-glow 2s ease-in-out infinite alternate;
}

@keyframes underline-glow {
    0% { box-shadow: 0 0 5px var(--accent-blue); }
    100% { box-shadow: 0 0 20px var(--accent-blue); }
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--accent-blue);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    letter-spacing: 1px;
}

.hero-description {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

/* CTA按钮 */
.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cta-button {
    position: relative;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1.1rem;
    font-weight: 600;
    border: 2px solid var(--accent-blue);
    background: transparent;
    color: var(--accent-blue);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    overflow: hidden;
    font-family: var(--font-body);
}

.cta-button.primary {
    background: var(--accent-blue);
    color: var(--pure-white);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px var(--shadow-glow);
}

.cta-button:not(.primary):hover {
    background: var(--accent-blue);
    color: var(--pure-white);
}

.button-energy {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: var(--transition-normal);
}

.cta-button:hover .button-energy {
    left: 100%;
}

/* 英雄视觉效果 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hologram-container {
    position: relative;
    width: 400px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hologram-circle {
    width: 200px;
    height: 200px;
    border: 2px solid var(--accent-blue);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    position: relative;
    animation: hologram-float 4s ease-in-out infinite;
}

@keyframes hologram-float {
    0%, 100% { transform: translateY(0) rotateY(0deg); }
    50% { transform: translateY(-20px) rotateY(180deg); }
}

.hologram-inner {
    font-size: 4rem;
    color: var(--accent-blue);
    animation: brain-pulse 2s ease-in-out infinite alternate;
}

@keyframes brain-pulse {
    0% { color: var(--accent-blue); text-shadow: 0 0 10px var(--accent-blue); }
    100% { color: var(--pure-white); text-shadow: 0 0 30px var(--accent-blue); }
}

.energy-rings {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.ring {
    position: absolute;
    border: 1px solid var(--accent-blue);
    border-radius: 50%;
    animation: ring-expand 3s ease-out infinite;
}

.ring-1 {
    width: 250px;
    height: 250px;
    margin: -125px 0 0 -125px;
    animation-delay: 0s;
}

.ring-2 {
    width: 300px;
    height: 300px;
    margin: -150px 0 0 -150px;
    animation-delay: 1s;
}

.ring-3 {
    width: 350px;
    height: 350px;
    margin: -175px 0 0 -175px;
    animation-delay: 2s;
}

@keyframes ring-expand {
    0% {
        transform: scale(0.8);
        opacity: 1;
    }
    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}

/* 区域通用样式 */
section {
    padding: var(--spacing-xxl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(45deg, var(--pure-white), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    opacity: 0.8;
    margin-bottom: var(--spacing-md);
}

/* 套餐区域 */
.packages {
    background: rgba(0, 0, 0, 0.1);
    position: relative;
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    align-items: stretch;
}

.package-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    position: relative;
    transition: var(--transition-normal);
    overflow: hidden;
}

.package-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--accent-blue), transparent, var(--accent-blue));
    border-radius: var(--radius-md);
    z-index: -1;
    opacity: 0;
    transition: var(--transition-normal);
}

.package-card:hover::before {
    opacity: 0.5;
}

.package-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 191, 255, 0.3);
}

.package-card.featured {
    border-color: var(--accent-blue);
    animation: featured-pulse 3s ease-in-out infinite;
}

@keyframes featured-pulse {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 191, 255, 0.3); }
    50% { box-shadow: 0 0 30px rgba(0, 191, 255, 0.6); }
}

.popular-badge {
    position: absolute;
    top: -1px;
    right: var(--spacing-md);
    background: var(--accent-blue);
    color: var(--pure-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
    animation: badge-glow 2s ease-in-out infinite alternate;
}

@keyframes badge-glow {
    0% { box-shadow: 0 0 10px var(--accent-blue); }
    100% { box-shadow: 0 0 20px var(--accent-blue); }
}

.card-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.package-icon {
    width: 80px;
    height: 80px;
    background: var(--glass-bg);
    border: 2px solid var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2rem;
    color: var(--accent-blue);
    position: relative;
    overflow: hidden;
}

.package-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, var(--accent-blue), transparent);
    opacity: 0.3;
    transition: var(--transition-normal);
    border-radius: 50%;
}

.package-card:hover .package-icon::after {
    width: 100px;
    height: 100px;
    margin: -50px 0 0 -50px;
}

.package-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--pure-white);
}

.package-subtitle {
    color: var(--accent-blue);
    font-weight: 600;
}

.price-section {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.currency {
    font-size: 1.5rem;
    vertical-align: top;
    color: var(--accent-blue);
}

.price {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 900;
    color: var(--pure-white);
}

.features-list {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.features-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.features-list li:last-child {
    border-bottom: none;
}

.features-list i {
    color: var(--accent-blue);
    width: 20px;
}

.package-button {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1.1rem;
    font-weight: 600;
    border: 2px solid var(--accent-blue);
    background: transparent;
    color: var(--accent-blue);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    position: relative;
    overflow: hidden;
    font-family: var(--font-body);
}

.package-button.featured {
    background: var(--accent-blue);
    color: var(--pure-white);
}

.package-button:hover {
    background: var(--accent-blue);
    color: var(--pure-white);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px var(--shadow-glow);
}

/* 核心优势区域 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.feature-item {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
    box-shadow: 0 15px 35px rgba(0, 191, 255, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--glass-bg);
    border: 2px solid var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2rem;
    color: var(--accent-blue);
    position: relative;
}

.icon-energy {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    border: 2px solid var(--accent-blue);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    animation: energy-pulse 2s ease-out infinite;
}

@keyframes energy-pulse {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0;
    }
}

.feature-item:hover .icon-energy {
    animation-duration: 1s;
}

.feature-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--pure-white);
}

.feature-description {
    opacity: 0.8;
    line-height: 1.6;
}

/* 友情链接区域 */
.friendly-links {
    background: rgba(0, 0, 0, 0.1);
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.link-item {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    text-decoration: none;
    color: var(--pure-white);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.link-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 191, 255, 0.1), transparent);
    transition: var(--transition-normal);
}

.link-item:hover::before {
    left: 100%;
}

.link-item:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 191, 255, 0.2);
}

.link-item i {
    font-size: 1.5rem;
}

/* 页脚 */
.footer {
    background: rgba(26, 32, 44, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    margin-top: var(--spacing-xxl);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xxl) var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.footer-section h4 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--accent-blue);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--accent-blue);
    margin-bottom: var(--spacing-md);
}

.footer-description {
    opacity: 0.8;
    line-height: 1.6;
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: var(--pure-white);
    text-decoration: none;
    transition: var(--transition-fast);
    opacity: 0.8;
}

.footer-section a:hover {
    color: var(--accent-blue);
    opacity: 1;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    opacity: 0.8;
}

.contact-info i {
    color: var(--accent-blue);
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-md) 0;
}

.footer-bottom-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    opacity: 0.8;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-links a {
    color: var(--pure-white);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-blue);
}

.timestamp {
    color: var(--accent-blue);
    font-weight: 600;
    font-family: var(--font-heading);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .hologram-container {
        width: 300px;
        height: 300px;
    }
    
    .packages-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-md: 16px;
        --spacing-lg: 24px;
        --spacing-xl: 32px;
        --spacing-xxl: 48px;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(26, 32, 44, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--spacing-xl);
        transition: var(--transition-fast);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        min-height: calc(100vh - 70px);
        padding-top: 70px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .cta-button {
        flex: 1;
        min-width: 140px;
        justify-content: center;
    }
    
    .hologram-container {
        width: 250px;
        height: 250px;
    }
    
    .packages-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .links-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        order: -1;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-button {
        width: 100%;
        max-width: 280px;
    }
    
    .links-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-info p {
        font-size: 0.9rem;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--primary-silver-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-blue);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 191, 255, 0.8);
}

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

/* 打印样式 */
@media print {
    .navbar,
    #matrix-canvas,
    .scan-lines,
    .circuit-pattern {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .section-title,
    .hero-title {
        color: black;
    }
}