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

/* 根变量定义 - 丰富色彩主题 */
:root {
    --primary-color: #2563eb;
    --secondary-color: #7c3aed;
    --accent-color: #06b6d4;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --text-light: #f8fafc;
    --text-gray: #e2e8f0;
    --background-dark: #0f172a;
    --background-light: #1e293b;
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #06b6d4 100%);
    --gradient-secondary: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #10b981 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.2);
    --shadow-blue: 0 4px 15px rgba(37, 99, 235, 0.3);
    --shadow-purple: 0 4px 15px rgba(124, 58, 237, 0.3);
    --shadow-cyan: 0 4px 15px rgba(6, 182, 212, 0.3);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-light);
    background: linear-gradient(180deg, var(--background-dark) 0%, var(--background-light) 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 54, 93, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-light);
}

.nav-brand i {
    font-size: 1.8rem;
    color: #ef4444;
    animation: cola-wiggle 4s ease-in-out infinite;
}

@keyframes cola-wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-15deg); }
    75% { transform: rotate(15deg); }
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    margin: 3px 0;
    transition: 0.3s;
}

/* 主页横幅 */
.hero {
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 100%, rgba(6, 182, 212, 0.15) 0%, transparent 50%);
    animation: gradient-shift 10s ease-in-out infinite;
}

@keyframes gradient-shift {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

/* 可乐装饰元素 */
.cola-decoration {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.cola-bubble {
    position: absolute;
    font-size: 2rem;
    opacity: 0.3;
    animation: float-bubble 8s ease-in-out infinite;
}

.bubble-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
    animation-duration: 10s;
}

.bubble-2 {
    top: 60%;
    right: 15%;
    animation-delay: 2s;
    animation-duration: 12s;
}

.bubble-3 {
    bottom: 30%;
    left: 20%;
    animation-delay: 4s;
    animation-duration: 8s;
}

@keyframes float-bubble {
    0% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.3;
    }
    25% {
        transform: translateY(-20px) rotate(90deg);
        opacity: 0.5;
    }
    50% {
        transform: translateY(-40px) rotate(180deg);
        opacity: 0.4;
    }
    75% {
        transform: translateY(-20px) rotate(270deg);
        opacity: 0.5;
    }
    100% {
        transform: translateY(0px) rotate(360deg);
        opacity: 0.3;
    }
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.1;
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(10px, 10px); }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(124, 58, 237, 0.2));
    border: 1px solid rgba(37, 99, 235, 0.4);
    border-radius: 50px;
    padding: 0.5rem 1rem;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    color: #60a5fa;
    animation: float 3s ease-in-out infinite;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #22d3ee 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: text-glow 3s ease-in-out infinite;
}

@keyframes text-glow {
    0%, 100% { filter: brightness(1); }
    50% { filter: brightness(1.2); }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

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

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: bold;
    background: linear-gradient(135deg, #60a5fa 0%, #34d399 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-gray);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-blue);
}

.btn-secondary {
    background: transparent;
    color: var(--text-light);
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-secondary);
    border-radius: 8px;
    z-index: -1;
    padding: 2px;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    box-shadow: 0 0 30px rgba(37, 99, 235, 0.6);
    transform: scale(1.05);
}

.btn-secondary:hover {
    background: var(--gradient-secondary);
    transform: scale(1.05);
}

/* 手机模型 */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: var(--background-light);
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-lg);
    position: relative;
    border: 8px solid #2d3748;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--background-light);
    border-radius: 28px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-interface {
    width: 100%;
    padding: 2rem;
}

.app-header {
    text-align: center;
    font-weight: bold;
    margin-bottom: 2rem;
    color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.app-header i {
    color: #ef4444;
    font-size: 1.2rem;
    animation: cola-pulse 2s ease-in-out infinite;
}

@keyframes cola-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.balance-display {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.3), rgba(124, 58, 237, 0.3));
    border: 1px solid rgba(37, 99, 235, 0.4);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-blue);
}

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

.balance-item:last-child {
    margin-bottom: 0;
}

.platform {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.amount {
    color: var(--text-light);
    font-size: 1.2rem;
    font-weight: bold;
}

.exchange-arrow {
    text-align: center;
    margin: 1rem 0;
}

.exchange-arrow i {
    font-size: 2rem;
    color: var(--accent-color);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.dynamic-btn {
    position: relative;
    width: 100%;
    padding: 1rem;
    background: var(--gradient-success);
    border: none;
    border-radius: var(--border-radius);
    color: white;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
    box-shadow: var(--shadow-cyan);
}

.dynamic-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.dynamic-btn:hover .btn-glow {
    left: 100%;
}

.btn-pulse {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--border-radius);
    border: 2px solid #22d3ee;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0;
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.status-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-gray);
}

.cola-bubble {
    color: #ef4444;
    font-size: 1.2rem;
    animation: bubble 3s ease-in-out infinite;
}

@keyframes bubble {
    0%, 100% { 
        transform: translateY(0) rotate(0deg); 
        color: #ef4444;
    }
    25% { 
        transform: translateY(-3px) rotate(-5deg); 
        color: #f59e0b;
    }
    50% { 
        transform: translateY(-5px) rotate(0deg); 
        color: #eab308;
    }
    75% { 
        transform: translateY(-3px) rotate(5deg); 
        color: #f59e0b;
    }
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: status-pulse 2s infinite;
}

@keyframes status-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

/* 区域标题样式 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(124, 58, 237, 0.2));
    border: 1px solid rgba(37, 99, 235, 0.4);
    border-radius: 50px;
    padding: 0.5rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #60a5fa;
}

.section-title {
    font-size: 2.5rem;
    font-weight: bold;
    text-align: center;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #22d3ee 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 服务特色 */
.features {
    padding: 100px 0;
    background: var(--background-light);
}

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

.feature-card {
    background: rgba(26, 54, 93, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(66, 153, 225, 0.2);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #4299e1, #63b3ed);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
    box-shadow: var(--shadow-blue);
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(66, 153, 225, 0.4);
}

/* 不同特色卡片的颜色主题 */
.feature-card:nth-child(1) .feature-icon {
    background: var(--gradient-accent);
    box-shadow: var(--shadow-cyan);
}

.feature-card:nth-child(2) .feature-icon {
    background: var(--gradient-success);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.feature-card:nth-child(3) .feature-icon {
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.feature-card:nth-child(4) .feature-icon {
    background: var(--gradient-secondary);
    box-shadow: var(--shadow-purple);
}

.feature-card:nth-child(5) .feature-icon {
    background: linear-gradient(135deg, #06b6d4, #3b82f6);
    box-shadow: var(--shadow-cyan);
}

.feature-card:nth-child(6) .feature-icon {
    background: linear-gradient(135deg, #ef4444, #f97316);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.feature-card p {
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.feature-tags {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: rgba(66, 153, 225, 0.1);
    border: 1px solid rgba(66, 153, 225, 0.2);
    border-radius: 20px;
    font-size: 0.8rem;
    color: #63b3ed;
}

/* 服务流程 */
.process {
    padding: 80px 0;
    background: var(--background-dark);
}

.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.step {
    text-align: center;
    max-width: 200px;
    position: relative;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-weight: bold;
    color: white;
    font-size: 1.2rem;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: rgba(37, 99, 235, 0.1);
    border: 2px solid rgba(37, 99, 235, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
    color: #60a5fa;
    transition: var(--transition);
}

.step:nth-child(1) .step-icon {
    background: rgba(37, 99, 235, 0.1);
    border-color: rgba(37, 99, 235, 0.3);
    color: #60a5fa;
}

.step:nth-child(4) .step-icon {
    background: rgba(124, 58, 237, 0.1);
    border-color: rgba(124, 58, 237, 0.3);
    color: #a78bfa;
}

.step:nth-child(7) .step-icon {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: #34d399;
}

.step:hover .step-icon {
    transform: scale(1.1);
    box-shadow: var(--shadow-blue);
}

.step h3 {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.step p {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.step-arrow {
    font-size: 2rem;
    color: var(--accent-color);
    animation: arrow-bounce 2s infinite;
}

@keyframes arrow-bounce {
    0%, 50%, 100% { transform: translateX(0); }
    25% { transform: translateX(5px); }
    75% { transform: translateX(-5px); }
}

/* 用户评价 */
.testimonials {
    padding: 80px 0;
    background: var(--background-light);
}

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

.testimonial-card {
    background: rgba(26, 54, 93, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(66, 153, 225, 0.2);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.testimonial-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.user-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.user-info h4 {
    color: var(--text-light);
    margin-bottom: 0.25rem;
}

.user-info span {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.rating {
    color: #fbbf24;
    font-size: 1.1rem;
}

.testimonial-card p {
    color: var(--text-gray);
    line-height: 1.8;
    font-style: italic;
}

/* 页脚 */
.footer {
    background: var(--background-dark);
    padding: 40px 0 20px;
    border-top: 1px solid rgba(66, 153, 225, 0.2);
}

.footer-content {
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.footer-brand i {
    color: #ef4444;
}

.footer-info p {
    color: var(--text-gray);
    margin-bottom: 1rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.contact-info p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--text-gray);
    font-size: 0.9rem;
}

.contact-info a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

.contact-info a:hover {
    color: #63b3ed;
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid rgba(66, 153, 225, 0.2);
    padding-top: 2rem;
    margin-top: 2rem;
}

.footer-bottom p {
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* 模态框样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--background-light);
    border: 1px solid var(--accent-color);
    border-radius: 16px;
    max-width: 400px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(66, 153, 225, 0.2);
}

.modal-header h3 {
    margin: 0;
    color: var(--text-light);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-gray);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-light);
}

.modal-body {
    padding: 20px;
}

.qr-code {
    width: 200px;
    height: 200px;
    background: white;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    color: #666;
    font-size: 14px;
    text-align: center;
    padding: 10px;
}

.modal-description {
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 20px;
}

.contact-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background: rgba(26, 54, 93, 0.5);
    border-radius: 8px;
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.contact-option:hover {
    background: rgba(66, 153, 225, 0.2);
    transform: translateY(-2px);
}

.contact-option i {
    font-size: 1.5rem;
    color: var(--accent-color);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-image {
        margin-top: 2rem;
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1.5rem;
    }

    .nav-toggle {
        display: flex;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 200px;
        justify-content: center;
    }

    .phone-mockup {
        width: 240px;
        height: 480px;
    }

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