/* 全局样式 */
:root {
    --primary-color: #4F46E5;
    --primary-dark: #3730A3;
    --primary-light: #818CF8;
    --secondary-color: #06B6D4;
    --accent-color: #10B981;
    --text-color: #1F2937;
    --light-text: #6B7280;
    --background: #F8FAFC;
    --dark-background: #1E293B;
    --card-background: rgba(255, 255, 255, 0.9);
    --glass-background: rgba(255, 255, 255, 0.7);
    --border-color: rgba(255, 255, 255, 0.2);
    --gradient-1: linear-gradient(135deg, #4F46E5, #06B6D4);
    --gradient-2: linear-gradient(135deg, #3730A3, #0EA5E9);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background: var(--background);
    overflow-x: hidden;
}

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

/* 导航栏样式 */
header {
    background: var(--glass-background);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--border-color);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
    position: relative;
}

.logo h1::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.logo h1:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 1.1rem;
    position: relative;
    padding: 0.5rem 0;
    transition: all 0.3s ease;
}

nav a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

nav a:hover::before,
nav a.active::before {
    transform: scaleX(1);
    transform-origin: left;
}

nav a:hover,
nav a.active {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* 英雄区样式 */
.hero {
    padding: 180px 0 100px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="1" fill="%234F46E5" opacity="0.1"/></svg>') repeat;
    animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
    from {
        transform: translateX(0) translateY(0);
    }
    to {
        transform: translateX(-100px) translateY(-100px);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: 1.5rem;
    color: var(--light-text);
    margin-bottom: 2.5rem;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    animation: fadeInUp 1s ease 0.4s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 2rem;
    border-radius: 0.75rem;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.btn:hover::before {
    transform: translateX(0);
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
    background: var(--glass-background);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--primary-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* 产品卡片样式 */
.products {
    padding: 100px 0;
    background: var(--background);
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 4rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    padding: 1rem;
}

.product-card {
    background: var(--glass-background);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    padding: 2.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.product-card:hover::before {
    opacity: 0.05;
}

.product-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-1);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.product-icon i {
    font-size: 2.5rem;
    color: white;
}

.product-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.product-features {
    list-style: none;
    margin: 1.5rem 0;
    position: relative;
    z-index: 1;
}

.product-features li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.product-features i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.product-cta {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    position: relative;
    z-index: 1;
}

/* 特性区域样式 */
.features {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    position: relative;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
}

.feature-card {
    background: var(--glass-background);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
}

.feature-icon i {
    font-size: 2.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* CTA区域样式 */
.cta {
    padding: 100px 0;
    background: var(--gradient-1);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></svg>') repeat;
    animation: moveBackground 20s linear infinite;
}

.cta h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.cta p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    position: relative;
}

.cta .btn-large {
    background: white;
    color: var(--primary-color);
    padding: 1rem 3rem;
    font-size: 1.2rem;
    position: relative;
}

/* 页脚样式 */
footer {
    background: var(--dark-background);
    padding: 100px 0 40px;
    color: white;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-col h3 {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

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

.footer-col ul li {
    margin-bottom: 1rem;
}

.footer-col a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s;
}

.footer-col a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.copyright {
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .product-cta {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }

    nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--glass-background);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: 100px 2rem 2rem;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 999;
        border-left: 1px solid var(--border-color);
    }

    nav.active {
        transform: translateX(0);
    }

    nav ul {
        flex-direction: column;
        gap: 2rem;
    }

    nav a {
        font-size: 1.2rem;
        display: block;
    }

    .menu-button {
        display: flex;
    }
}

/* 动画效果 */
@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0px);
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(79, 70, 229, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(79, 70, 229, 0);
    }
}

/* 优惠券部分样式 */
.coupons {
    padding: 4rem 0;
    background-color: #f8f9fa;
}

.section-desc {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 2rem;
    color: #666;
}

.coupon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.coupon-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 2px dashed #3498db;
    position: relative;
}

.coupon-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.coupon-content {
    padding: 1.5rem;
    position: relative;
}

.coupon-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.coupon-value {
    font-size: 1.8rem;
    font-weight: bold;
    color: #e74c3c;
}

.coupon-type {
    background-color: #3498db;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

.coupon-code {
    background-color: #f0f0f0;
    padding: 0.8rem;
    text-align: center;
    font-family: monospace;
    font-size: 1.2rem;
    font-weight: bold;
    letter-spacing: 1px;
    border-radius: 5px;
    margin: 1rem 0;
    border: 1px dashed #ccc;
    user-select: all;
}

.coupon-date {
    font-size: 0.85rem;
    color: #777;
    margin-bottom: 1rem;
}

.btn-copy {
    width: 100%;
    background-color: #2ecc71;
    border: none;
}

.btn-copy:hover {
    background-color: #27ae60;
}

.coupon-note {
    background-color: #f8f4e5;
    padding: 0.8rem;
    text-align: center;
    font-size: 0.9rem;
    color: #b58105;
}

.coupon-instructions {
    max-width: 700px;
    margin: 0 auto;
    background-color: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.coupon-instructions h3 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.coupon-instructions ol {
    margin-left: 1.5rem;
    line-height: 1.8;
}

.coupon-instructions a {
    color: #3498db;
    text-decoration: underline;
}

@media (max-width: 768px) {
    .coupon-grid {
        grid-template-columns: 1fr;
    }
}