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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1f2937;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    overflow-x: hidden;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0;
    font-weight: 600;
    font-size: 1.25rem;
    color: #1e40af;
}

.logo-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s ease;
}

.logo-icon:hover {
    transform: scale(1.1) rotate(5deg);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #64748b;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #3b82f6;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    transition: width 0.3s ease;
}

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

.nav-cta {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
}

/* 英雄区域 */
.hero {
    padding: 140px 0 30px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    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="%23e2e8f0" stroke-width="0.5" opacity="0.3"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>') repeat;
    opacity: 0.5;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

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

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.title-line {
    color: #1f2937;
    margin-bottom: 10px;
}

.title-highlight {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease-in-out infinite;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: white;
    color: #3b82f6;
    border: 2px solid #e2e8f0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    border-color: #3b82f6;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.btn-outline {
    background: transparent;
    color: #3b82f6;
    border: 2px solid #3b82f6;
}

.btn-outline:hover {
    background: #3b82f6;
    color: white;
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #3b82f6;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: #64748b;
    font-weight: 500;
}

/* 英雄区域视觉效果 */
.hero-visual {
    position: relative;
    height: 500px;
    animation: fadeInRight 1s ease-out 0.3s both;
}

.floating-card {
    position: absolute;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.9));
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.1), 0 5px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.1);
    backdrop-filter: blur(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.floating-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.6s ease;
}

.floating-card:hover::before {
    left: 100%;
}

.floating-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 25px 50px rgba(59, 130, 246, 0.2), 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
}

.card-1 {
    top: 5px;
    left: 120px;
    width: 260px;
    animation: floatDynamic1 8s ease-in-out infinite, glow 4s ease-in-out infinite;
    z-index: 999;
}

.card-2 {
    top: 180px;
    right: -10px;
    width: 240px;
    animation: floatDynamic2 7s ease-in-out infinite 1.5s, glow 4s ease-in-out infinite 2s;
}

.card-3 {
    bottom: 40px;
    left: 40px;
    width: 220px;
    animation: floatDynamic3 9s ease-in-out infinite 3s, glow 4s ease-in-out infinite 1s;
}

@keyframes floatDynamic1 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    25% { transform: translateY(-15px) rotate(1deg); }
    50% { transform: translateY(-30px) rotate(0deg); }
    75% { transform: translateY(-15px) rotate(-1deg); }
}

@keyframes floatDynamic2 {
    0%, 100% { transform: translateY(0px) translateX(0px) rotate(0deg); }
    33% { transform: translateY(-20px) translateX(5px) rotate(-1deg); }
    66% { transform: translateY(-10px) translateX(-5px) rotate(1deg); }
}

@keyframes floatDynamic3 {
    0%, 100% { transform: translateY(0px) scale(1) rotate(0deg); }
    30% { transform: translateY(-25px) scale(1.02) rotate(1deg); }
    60% { transform: translateY(-10px) scale(0.98) rotate(-0.5deg); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 15px 35px rgba(59, 130, 246, 0.1), 0 5px 15px rgba(0, 0, 0, 0.08); }
    50% { box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2), 0 8px 20px rgba(59, 130, 246, 0.1); }
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 1rem;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8, #6366f1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    animation: iconPulse 3s ease-in-out infinite;
}

.card-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: rotate(45deg);
    animation: iconShine 4s ease-in-out infinite;
}

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

@keyframes iconShine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    50% { transform: translateX(100%) translateY(100%) rotate(45deg); }
    100% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
}

.card-content h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, #1f2937, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-content p {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.6;
    font-weight: 500;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* 功能特色 */
.features {
    padding: 100px 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease-out;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.25rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    transition: all 0.3s ease;
    animation: fadeInUp 0.8s ease-out;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: #3b82f6;
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 1rem;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #64748b;
    line-height: 1.7;
}

/* 工作原理 */
.how-it-works {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    position: relative;
}

.step {
    text-align: center;
    position: relative;
    animation: fadeInUp 0.8s ease-out;
}

.step-number {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    position: relative;
    z-index: 2;
    transition: transform 0.3s ease;
}

.step:hover .step-number {
    transform: scale(1.1);
}

.step-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.step-content p {
    color: #64748b;
    line-height: 1.7;
}

/* 价格方案 */
.pricing {
    padding: 100px 0;
    background: white;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 1.5rem;
    padding: 2.5rem;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
    animation: fadeInUp 0.8s ease-out;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.pricing-card.featured {
    border-color: #3b82f6;
    transform: scale(1.05);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
}

.currency {
    font-size: 1.5rem;
    color: #64748b;
}

.amount {
    font-size: 4rem;
    font-weight: 700;
    color: #3b82f6;
}

.period {
    font-size: 1.25rem;
    color: #64748b;
}

.price-note {
    color: #10b981;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.pricing-features {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid #f1f5f9;
}

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

.pricing-features i {
    color: #10b981;
    font-size: 1.125rem;
}

.pricing-note {
    text-align: center;
    margin-top: 3rem;
    padding: 1.5rem;
    background: #f8fafc;
    border-radius: 1rem;
    color: #64748b;
}

.pricing-note i {
    color: #3b82f6;
    margin-right: 0.5rem;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    animation: fadeInLeft 0.8s ease-out;
}

.contact-info p {
    font-size: 1.25rem;
    color: #d1d5db;
    margin-bottom: 2rem;
    line-height: 1.7;
    animation: fadeInLeft 0.8s ease-out 0.2s both;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    animation: fadeInLeft 0.8s ease-out 0.4s both;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0.75rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.contact-method:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(5px);
}

.contact-method i {
    color: #3b82f6;
    font-size: 1.25rem;
}

.contact-form {
    animation: fadeInRight 0.8s ease-out;
}

.form {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 1.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #d1d5db;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3b82f6;
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

/* Modal Styles */
.modal {
    display: none; 
    position: fixed; 
    z-index: 1000; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto; 
    background-color: rgba(0,0,0,0.5); 
}

.modal-content {
    background-color: #fefefe;
    color: #666;
    margin: 10% auto; 
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 800px;
    border-radius: 8px;
    position: relative;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
}

#modal-body {
    max-height: 60vh;
    overflow-y: auto;
}

.close-button {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close-button:hover,
.close-button:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

/* 页脚 */
.footer {
    background: #0f172a;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #f8fafc;
}

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

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #3b82f6;
}

.footer-section p {
    color: #94a3b8;
    line-height: 1.7;
    margin-top: 1rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid #334155;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.language-switcher {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.language-switcher:hover {
    background: rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.5);
}

.language-switcher i {
    color: #3b82f6;
    font-size: 1rem;
}

.language-switcher .lang-btn {
    background: transparent;
    border: none;
    color: #94a3b8;
    font-size: 0.875rem;
    cursor: pointer;
    outline: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
}

.language-switcher .lang-btn:hover,
.language-switcher .lang-btn:focus {
    color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
}

.lang-dropdown {
    position: absolute;
    bottom: 100%;
    right: 0;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 150px;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.lang-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
    color: #1f2937;
    font-size: 0.875rem;
}

.lang-option:hover {
    background-color: #f8fafc;
}

.lang-option.active {
    background-color: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.lang-option .flag {
    font-size: 1rem;
}

.lang-option:first-child {
    border-radius: 0.5rem 0.5rem 0 0;
}

.lang-option:last-child {
    border-radius: 0 0 0.5rem 0.5rem;
}

.language-switcher select {
    background: transparent;
    border: none;
    color: #94a3b8;
    font-size: 0.875rem;
    cursor: pointer;
    outline: none;
}

.language-switcher select:focus {
    color: #3b82f6;
}

.footer-bottom p {
    color: #94a3b8;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #3b82f6;
    color: white;
    transform: translateY(-2px);
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* 滚动动画 */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-actions {
        justify-content: center;
        align-items: center;
    }
    .hero-visual {
        height: 400px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .floating-card {
        animation: none !important;
        position: static;
        display: flex;
        flex-direction: column;
        width: 30%;
        margin: 0.5rem;
        transform: none !important;
        flex-shrink: 0;
        align-items: center;
        background: none;
        border: none;
        box-shadow: none;
    }
    
    .hero-visual {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: flex-start;
        height: auto;
        padding: 1rem;
        gap: 1rem;
    }
    
    .card-icon {
        animation: none !important;
    }
    
    .card-icon::before {
        animation: none !important;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-container {
        grid-template-columns: 1fr;
    }
    .floating-card {
        width: 100%;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .floating-card {
        position: static;
        margin-bottom: 1rem;
        width: 100% !important;
    }
    
    .hero-visual {
        height: auto;
    }
}

/* FAQ 常见问题样式 */
.faq {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
    margin-top: 3rem;
}

.faq-item {
    background: white;
    border-radius: 12px;
    margin-bottom: 1rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(226, 232, 240, 0.8);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.faq-question {
    padding: 1.5rem 2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

.faq-question:hover {
    background: #f8fafc;
}

.faq-question h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1f2937;
    margin: 0;
    flex: 1;
    padding-right: 1rem;
}

.faq-question i {
    color: #3b82f6;
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question {
    border-bottom-color: rgba(226, 232, 240, 0.8);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    background: #fafbfc;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding: 1.5rem 2rem;
}

.faq-answer p {
    color: #64748b;
    line-height: 1.7;
    margin: 0;
    font-size: 0.95rem;
}

/* FAQ 响应式设计 */
@media (max-width: 768px) {
    .faq {
        padding: 4rem 0;
    }
    
    .faq-question {
        padding: 1.25rem 1.5rem;
    }
    
    .faq-question h3 {
        font-size: 1rem;
    }
    
    .faq-item.active .faq-answer {
        padding: 1.25rem 1.5rem;
    }
    
    .faq-answer p {
        font-size: 0.9rem;
    }
}