/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #0ea5e9;
    --accent-color: #f97316;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 70px;
}

.logo {
    position: relative;
    z-index: 10;
    display: flex;
    align-items: center;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-svg {
    height: 36px;
    width: auto;
    transition: transform 0.3s ease;
    display: block;
}

.logo a:hover .logo-svg {
    transform: translateY(-2px);
}

.logo-svg .logo-mark {
    transition: transform 0.3s ease;
}

.logo a:hover .logo-svg .logo-mark {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-item {
    display: flex;
    align-items: center;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    line-height: 1;
    padding: 0.5rem 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

.btn-demo {
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-demo:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* Hero 区域 */
.hero {
    margin-top: 80px;
    padding: 100px 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 10;
}

.hero-badge {
    display: inline-block;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn-primary, .btn-secondary {
    padding: 1rem 2rem;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.2);
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
}

.hero-image {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-illustration {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 1000px;
}

/* 中心手机模型 */
.phone-mockup {
    position: relative;
    width: 280px;
    height: 560px;
    background: #1a1a1a;
    border-radius: 40px;
    padding: 12px;
    box-shadow: 
        0 0 0 2px #333,
        0 20px 60px rgba(0, 0, 0, 0.3),
        0 0 100px rgba(37, 99, 235, 0.2);
    z-index: 10;
    animation: phoneFloat 6s ease-in-out infinite;
    transform-style: preserve-3d;
}

@keyframes phoneFloat {
    0%, 100% {
        transform: translateY(0) rotateY(-5deg);
    }
    50% {
        transform: translateY(-20px) rotateY(5deg);
    }
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 32px;
    overflow: hidden;
    position: relative;
}

.phone-header {
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    color: white;
    font-size: 12px;
    font-weight: 600;
}

.phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 24px;
    background: #1a1a1a;
    border-radius: 0 0 16px 16px;
}

.phone-icons {
    display: flex;
    gap: 4px;
    font-size: 10px;
}

.phone-content {
    padding: 20px;
    height: calc(100% - 44px);
}

.app-screen {
    background: white;
    border-radius: 20px;
    padding: 24px;
    height: 100%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.app-header h3 {
    font-size: 20px;
    color: #1a1a1a;
    margin: 0 0 4px 0;
}

.app-header p {
    font-size: 14px;
    color: #666;
    margin: 0;
}

.progress-bar {
    height: 6px;
    background: #e0e0e0;
    border-radius: 10px;
    margin: 20px 0;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 66%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 10px;
    animation: progressAnimation 2s ease-in-out infinite;
}

@keyframes progressAnimation {
    0%, 100% { width: 66%; }
    50% { width: 75%; }
}

.check-status {
    margin-top: 24px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    margin-bottom: 8px;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.status-item.completed {
    background: #f0f9ff;
}

.status-item.active {
    background: #eff6ff;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

.status-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: bold;
}

.status-item.completed .status-icon {
    background: #2563eb;
    color: white;
}

.status-item.active .status-icon {
    background: #3b82f6;
    color: white;
    animation: spin 2s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 浮动功能卡片 - 重新设计 */
.floating-card {
    position: absolute;
    background: white;
    border-radius: 16px;
    padding: 16px;
    box-shadow: 
        0 10px 40px rgba(0, 0, 0, 0.1),
        0 0 0 1px rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(10px);
    animation: cardFloat 4s ease-in-out infinite;
    transition: all 0.3s ease;
    cursor: pointer;
}

.floating-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(37, 99, 235, 0.2);
}

.card-1 {
    top: 10%;
    left: -5%;
    width: 180px;
    animation-delay: 0s;
}

.card-2 {
    top: 35%;
    right: -8%;
    width: 180px;
    animation-delay: 1s;
}

.card-3 {
    bottom: 20%;
    left: -8%;
    width: 180px;
    animation-delay: 2s;
}

.card-4 {
    top: 5%;
    right: 15%;
    width: 120px;
    padding: 12px;
    animation-delay: 0.5s;
}

.card-5 {
    bottom: 10%;
    right: 10%;
    width: 140px;
    padding: 12px;
    animation-delay: 1.5s;
}

@keyframes cardFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.card-icon-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.card-icon-wrapper.ai-glow {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    animation: aiGlow 2s ease-in-out infinite;
}

@keyframes aiGlow {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(240, 147, 251, 0.4);
    }
    50% {
        box-shadow: 0 4px 24px rgba(240, 147, 251, 0.6);
    }
}

.card-icon-wrapper.secure-glow {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.card-icon {
    width: 24px;
    height: 24px;
    color: white;
}

.card-badge {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-badge.ai-badge {
    background: rgba(240, 147, 251, 0.1);
    color: #f093fb;
    animation: badgePulse 2s ease-in-out infinite;
}

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

.card-badge.secure-badge {
    background: rgba(79, 172, 254, 0.1);
    color: #4facfe;
}

.card-content h4 {
    font-size: 16px;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 4px 0;
}

.card-content p {
    font-size: 13px;
    color: #666;
    margin: 0 0 8px 0;
}

.card-stats {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: #888;
}

.stat-up {
    color: #10b981;
    font-weight: 700;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulseDot 1.5s ease-in-out infinite;
}

@keyframes pulseDot {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.shield-icon {
    font-size: 14px;
}

/* 迷你图表卡片 */
.mini-chart {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 60px;
    margin-bottom: 8px;
}

.chart-bar {
    flex: 1;
    background: linear-gradient(to top, #667eea, #764ba2);
    border-radius: 4px;
    animation: chartGrow 2s ease-in-out infinite;
}

@keyframes chartGrow {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

.chart-bar:nth-child(1) { animation-delay: 0s; }
.chart-bar:nth-child(2) { animation-delay: 0.2s; }
.chart-bar:nth-child(3) { animation-delay: 0.4s; }
.chart-bar:nth-child(4) { animation-delay: 0.6s; }
.chart-bar:nth-child(5) { animation-delay: 0.8s; }

.rating-stars {
    font-size: 20px;
    margin-bottom: 8px;
    letter-spacing: 2px;
}

.card-mini-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.card-mini-text strong {
    font-size: 18px;
    color: #1a1a1a;
}

.card-mini-text span {
    font-size: 11px;
    color: #888;
}

/* 背景装饰元素 */
.bg-decoration {
    position: absolute;
    border-radius: 50%;
    opacity: 0.4;
    animation: decorationFloat 8s ease-in-out infinite;
}

.circle-1 {
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.2), transparent);
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.circle-2 {
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.2), transparent);
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.circle-3 {
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.2), transparent);
    bottom: 10%;
    left: 15%;
    animation-delay: 4s;
}

@keyframes decorationFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(20px, -20px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* 核心价值 */
.values {
    padding: 80px 0;
    background: var(--bg-white);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.value-card {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.value-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

.value-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 产品功能 */
.features {
    padding: 100px 0;
    background: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-header p {
    font-size: 1.25rem;
    color: var(--text-light);
}

.feature-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 6rem;
}

.feature-section.reverse {
    direction: rtl;
}

.feature-section.reverse .feature-content {
    direction: ltr;
}

.feature-tag {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.feature-content h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-content p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
    margin-bottom: 1.5rem;
}

.feature-list li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-dark);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
    font-size: 1.25rem;
}

.feature-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.feature-link:hover {
    color: var(--secondary-color);
}

.mockup-phone {
    width: 300px;
    height: 600px;
    background: #1f2937;
    border-radius: 40px;
    padding: 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    margin: 0 auto;
}

.mockup-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 30px;
    overflow: hidden;
}

.app-preview {
    padding: 1.5rem;
    height: 100%;
}

.app-header {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.app-content {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 12px;
}

.progress-bar {
    background: #e2e8f0;
    height: 8px;
    border-radius: 4px;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.room-option {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    border: 2px solid var(--primary-color);
    font-weight: 600;
}

.chat-messages {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    padding: 0.75rem 1rem;
    border-radius: 12px;
    max-width: 80%;
}

.message.bot {
    background: var(--bg-light);
    align-self: flex-start;
}

.message.user {
    background: var(--primary-color);
    color: white;
    align-self: flex-end;
}

.bill-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.bill-total {
    font-size: 1.25rem;
    font-weight: 700;
    padding: 1rem 0;
    color: var(--text-dark);
}

.checkout-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 1rem;
}

.security-badge {
    background: var(--success-color);
    color: white;
    padding: 0.75rem;
    border-radius: 8px;
    text-align: center;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.payment-methods {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.payment-method {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.payment-method:hover {
    border-color: var(--primary-color);
}

/* AI 专题 */
.ai-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.ai-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.ai-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.ai-content h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.ai-description {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: 3rem;
    opacity: 0.95;
}

.ai-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.ai-feature {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 16px;
    transition: all 0.3s ease;
}

.ai-feature:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-5px);
}

.ai-feature h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.ai-feature p {
    opacity: 0.9;
}

/* 客户案例 */
.cases {
    padding: 100px 0;
    background: var(--bg-white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.case-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.4s ease;
    border: 1px solid var(--border-color);
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-color);
}

.case-header {
    padding: 2rem 2rem 1.5rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-bottom: 1px solid var(--border-color);
}

.case-company {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.company-logo {
    flex-shrink: 0;
}

.company-logo svg {
    display: block;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.1));
}

.company-info h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.company-desc {
    font-size: 0.875rem;
    color: var(--text-light);
    margin: 0;
}

.case-content {
    padding: 2rem;
}

.case-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

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

.stat-number-large {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label-small {
    font-size: 0.875rem;
    color: var(--text-light);
    font-weight: 500;
}

.case-quote {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 2rem;
    position: relative;
    padding-left: 1.5rem;
    border-left: 3px solid var(--primary-color);
    font-style: italic;
}

.case-author-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--bg-light);
    border-radius: 12px;
}

.author-avatar {
    flex-shrink: 0;
}

.author-avatar svg {
    display: block;
}

.author-details {
    flex: 1;
}

.author-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.author-title {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* 解决方案 */
.solutions {
    padding: 100px 0;
    background: var(--bg-white);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.solution-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    border: 2px solid var(--border-color);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.solution-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 50px rgba(37, 99, 235, 0.15);
}

.solution-card.featured {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-color: var(--primary-color);
    position: relative;
}

.featured-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-color);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.solution-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

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

.solution-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.solution-features {
    list-style: none;
    margin-bottom: 2rem;
}

.solution-features li {
    padding: 0.5rem 0;
    color: var(--text-dark);
    font-size: 0.95rem;
    padding-left: 1.5rem;
    position: relative;
}

.solution-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

.solution-btn {
    display: block;
    width: 100%;
    padding: 0.875rem;
    text-align: center;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.solution-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.solution-btn.primary {
    background: var(--primary-color);
    color: white;
}

.solution-btn.primary:hover {
    background: var(--secondary-color);
}

/* 价格方案 */
.pricing {
    padding: 100px 0;
    background: var(--bg-light);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.pricing-card {
    background: white;
    padding: 3rem 2.5rem;
    border-radius: 20px;
    border: 2px solid var(--border-color);
    transition: all 0.4s ease;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.pricing-card.popular {
    border-color: var(--primary-color);
    border-width: 3px;
    transform: scale(1.05);
    box-shadow: 0 20px 60px rgba(37, 99, 235, 0.2);
}

.pricing-card.popular:hover {
    transform: scale(1.05) translateY(-10px);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.pricing-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.pricing-header h3 {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.pricing-tag {
    display: inline-block;
    background: var(--bg-light);
    color: var(--text-light);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-tag.premium {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.pricing-tag.enterprise {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.pricing-price {
    text-align: center;
    margin-bottom: 1.5rem;
}

.pricing-price .price {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-price .period {
    font-size: 1rem;
    color: var(--text-light);
}

.pricing-desc {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
    min-height: 48px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-dark);
}

.pricing-features li.disabled {
    color: var(--text-light);
    opacity: 0.5;
}

.pricing-features .check {
    color: var(--success-color);
    font-weight: 700;
    font-size: 1.25rem;
}

.pricing-features .cross {
    color: var(--text-light);
    font-weight: 700;
    font-size: 1.25rem;
}

.pricing-btn {
    width: 100%;
    padding: 1rem;
    border-radius: 10px;
    border: 2px solid var(--primary-color);
    background: white;
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.pricing-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

.pricing-btn.primary {
    background: var(--primary-color);
    color: white;
}

.pricing-btn.primary:hover {
    background: var(--secondary-color);
}

.pricing-note {
    text-align: center;
    padding: 1.5rem;
    background: rgba(37, 99, 235, 0.05);
    border-radius: 12px;
    max-width: 600px;
    margin: 0 auto;
}

.pricing-note p {
    color: var(--text-dark);
    font-size: 1rem;
    margin: 0;
}

/* 数据统计 */
.statistics {
    padding: 100px 0;
    background: var(--bg-light);
    text-align: center;
}

.statistics h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-box {
    background: white;
    padding: 3rem 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.stat-box:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-desc {
    font-size: 1rem;
    color: var(--text-light);
}

/* 资源中心 */
.resources {
    padding: 100px 0;
    background: var(--bg-white);
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.resource-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.resource-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.resource-type {
    display: inline-block;
    background: var(--bg-light);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

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

.resource-card p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.resource-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.resource-link:hover {
    color: var(--secondary-color);
}

/* CTA 区域 */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    text-align: center;
}

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

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.btn-cta {
    background: white;
    color: var(--primary-color);
    padding: 1.25rem 3rem;
    border: none;
    border-radius: 50px;
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

/* 页脚 - 极简现代风格 */
.footer {
    background: #0f172a;
    color: white;
    padding: 3rem 0 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-main {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 1.5rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-logo {
    height: 36px;
    width: auto;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
    margin: 0;
}

.footer-links {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 1rem;
}

.footer-nav {
    display: flex;
    gap: 2rem;
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.footer-contact {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    font-size: 0.875rem;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-contact a:hover {
    color: rgba(255, 255, 255, 0.9);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
}

.footer-legal {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    color: rgba(255, 255, 255, 0.4);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.4);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-legal a:hover {
    color: rgba(255, 255, 255, 0.7);
}

.footer-policies {
    display: flex;
    gap: 1rem;
}

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

.footer-policies a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.separator {
    color: rgba(255, 255, 255, 0.3);
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

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

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: white;
    padding: 3rem;
    border-radius: 20px;
    width: 90%;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

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

.modal-close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 2rem;
    font-weight: 300;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.3s ease;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    z-index: 10001;
    background: rgba(255, 255, 255, 0.9);
    pointer-events: auto;
}

.modal-close:hover {
    color: var(--text-dark);
    background: var(--bg-light);
    transform: rotate(90deg);
}

.modal-header {
    text-align: center;
    margin-bottom: 2rem;
}

.modal-header h2 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.modal-header p {
    color: var(--text-light);
    font-size: 1rem;
}

.demo-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.required {
    color: #ef4444;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.checkbox-group label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-weight: 400;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    margin-top: 2px;
}

.checkbox-group span {
    flex: 1;
    color: var(--text-light);
    font-size: 0.9rem;
}

.checkbox-group a {
    color: var(--primary-color);
    text-decoration: none;
}

.checkbox-group a:hover {
    text-decoration: underline;
}

.submit-btn {
    width: 100%;
    padding: 1.125rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.4);
}

.submit-btn:active {
    transform: translateY(0);
}

/* 视频弹窗样式 */
.video-modal-content {
    max-width: 1000px;
    max-height: 90vh;
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.video-container {
    padding: 3rem;
    overflow-y: auto;
    flex: 1;
    -webkit-overflow-scrolling: touch;
}

/* 自定义滚动条样式 */
.video-container::-webkit-scrollbar {
    width: 8px;
}

.video-container::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.video-container::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 10px;
}

.video-container::-webkit-scrollbar-thumb:hover {
    background: #555;
}

.video-header {
    text-align: center;
    margin-bottom: 2rem;
}

.video-header h2 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.video-header p {
    font-size: 1.125rem;
    color: var(--text-light);
}

.video-player {
    margin-bottom: 3rem;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    position: relative;
    background: #000;
}

/* HTML5 视频元素 */
.video-element {
    width: 100%;
    height: auto;
    display: block;
    background: #000;
    max-height: 600px;
}

/* 视频控制条样式优化 */
.video-element::-webkit-media-controls-panel {
    background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.8) 100%);
}

/* 视频覆盖层 */
.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    cursor: pointer;
    transition: opacity 0.3s ease;
    z-index: 10;
    pointer-events: auto;
}

.video-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.video-placeholder {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 比例 */
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    cursor: pointer;
    transition: transform 0.3s ease;
}

.video-placeholder:hover {
    transform: scale(1.02);
}

.video-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
}

.play-button-large {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
}

.play-button-large:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

.video-title {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.video-duration {
    font-size: 1.25rem;
    color: white;
    background: rgba(0, 0, 0, 0.5);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.video-subtitle {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 0.75rem;
    font-weight: 500;
}

.video-chapters {
    margin-bottom: 3rem;
}

.video-chapters h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.chapters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.chapter-item {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 12px;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

.chapter-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.1);
}

.chapter-time {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.chapter-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.chapter-item p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.video-highlights {
    margin-bottom: 3rem;
}

.video-highlights h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.highlight-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.1);
}

.highlight-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.highlight-text h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.highlight-text p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.video-cta {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 16px;
}

.video-cta-btn {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.video-cta-note {
    font-size: 0.95rem;
    color: var(--text-light);
    margin: 0;
}

/* 视频弹窗响应式 */
@media (max-width: 768px) {
    .video-container {
        padding: 2rem 1.5rem;
    }

    .video-header h2 {
        font-size: 1.5rem;
    }

    .video-title {
        font-size: 1.5rem;
    }

    .play-button-large svg {
        width: 60px;
        height: 60px;
    }

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

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

    .video-cta-btn {
        width: 100%;
    }
}

/* 表单验证样式 */
.form-group input:invalid:not(:placeholder-shown),
.form-group select:invalid:not(:placeholder-shown) {
    border-color: #ef4444;
}

.form-group input:valid:not(:placeholder-shown),
.form-group select:valid {
    border-color: var(--success-color);
}

/* 移动端和微信优化 */
/* 禁用iOS双击缩放 */
* {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

/* 优化触摸滚动 */
html {
    -webkit-overflow-scrolling: touch;
}

/* 微信浏览器适配 */
body {
    /* 防止微信下拉刷新 */
    overscroll-behavior-y: contain;
}

/* 移动端按钮优化 - 增大点击区域 */
@media (max-width: 768px) {
    .btn-primary, 
    .btn-secondary, 
    .btn-demo, 
    .btn-cta {
        min-height: 48px; /* 符合移动端最小点击区域要求 */
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
    
    .nav-link {
        padding: 1rem;
        font-size: 1rem;
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

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

    .hero-image {
        height: 400px;
        margin-top: 40px;
    }
    
    .phone-mockup {
        width: 200px;
        height: 400px;
        padding: 8px;
    }
    
    .phone-screen {
        border-radius: 24px;
    }
    
    .app-screen {
        padding: 16px;
    }
    
    .floating-card {
        padding: 12px;
    }
    
    .card-1, .card-2, .card-3 {
        width: 140px;
    }
    
    .card-1 {
        left: -10px;
        top: 5%;
    }
    
    .card-2 {
        right: -10px;
        top: 30%;
    }
    
    .card-3 {
        left: 50%;
        transform: translateX(-50%);
        bottom: 5%;
    }
    
    .card-4, .card-5 {
        display: none;
    }
    
    .bg-decoration {
        opacity: 0.2;
    }

    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-section,
    .feature-section.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }

    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .pricing-card.popular {
        transform: scale(1);
    }

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

    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .case-stats {
        gap: 1rem;
    }
    
    .stat-number-large {
        font-size: 2rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    .footer-main {
        flex-direction: column;
        gap: 2rem;
    }

    .footer-links {
        align-items: flex-start;
    }

    .footer-nav {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .footer-contact {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .footer-contact .separator {
        display: none;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .footer-legal {
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    /* 导航栏移动端优化 */
    .nav-container {
        padding: 0.75rem 1rem;
        min-height: 60px;
    }
    
    .nav-menu {
        display: none;
    }

    .hamburger {
        display: flex;
        z-index: 1001;
    }
    
    .logo-svg {
        height: 32px;
    }

    /* Hero 区域移动端优化 */
    .hero {
        padding: 60px 0 40px;
        margin-top: 60px;
    }

    .hero-title {
        font-size: 1.75rem;
        line-height: 1.3;
    }

    .hero-description {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .hero-badge {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
        width: 100%;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }

    .hero-stats {
        flex-direction: row;
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .stat-item {
        flex: 1;
        min-width: 80px;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }

    /* 核心价值移动端优化 */
    .values {
        padding: 50px 0;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
    
    .value-card {
        padding: 1.5rem;
    }
    
    .value-icon {
        font-size: 2.5rem;
    }
    
    .value-card h3 {
        font-size: 1.25rem;
    }

    /* 功能区域移动端优化 */
    .features {
        padding: 50px 0;
    }
    
    .section-header {
        margin-bottom: 2.5rem;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .section-header p {
        font-size: 1rem;
    }
    
    .feature-section {
        margin-bottom: 3rem;
    }
    
    .feature-content h3 {
        font-size: 1.5rem;
    }
    
    .feature-content p {
        font-size: 1rem;
    }
    
    .mockup-phone {
        max-width: 280px;
        height: 560px;
    }

    /* AI 区域移动端优化 */
    .ai-section {
        padding: 50px 0;
    }
    
    .ai-content h2 {
        font-size: 1.75rem;
    }
    
    .ai-description {
        font-size: 1rem;
    }

    /* 解决方案移动端优化 */
    .solutions {
        padding: 50px 0;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
    
    .solution-card {
        padding: 2rem 1.5rem;
    }

    /* 价格方案移动端优化 */
    .pricing {
        padding: 50px 0;
    }
    
    .pricing-card {
        padding: 2rem 1.5rem;
    }
    
    .pricing-card.popular {
        transform: scale(1);
    }

    /* 客户案例移动端优化 */
    .cases {
        padding: 50px 0;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .case-header {
        padding: 1.5rem;
    }
    
    .case-content {
        padding: 1.5rem;
    }
    
    .case-stats {
        gap: 1rem;
    }
    
    .stat-number-large {
        font-size: 2rem;
    }

    /* 数据统计移动端优化 */
    .statistics {
        padding: 50px 0;
    }
    
    .statistics h2 {
        font-size: 1.75rem;
        margin-bottom: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .stat-box {
        padding: 2rem 1rem;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .stat-desc {
        font-size: 0.875rem;
    }

    /* 资源中心移动端优化 */
    .resources {
        padding: 50px 0;
    }
    
    .resources-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    /* CTA 区域移动端优化 */
    .cta-section {
        padding: 50px 0;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
    
    .cta-content p {
        font-size: 1rem;
    }

    /* 页脚移动端优化 */
    .footer {
        padding: 2rem 0 1rem;
    }
    
    .footer-main {
        flex-direction: column;
        gap: 1.5rem;
        padding-bottom: 1.5rem;
    }

    .footer-links {
        align-items: flex-start;
    }

    .footer-nav {
        flex-wrap: wrap;
        gap: 1rem;
        font-size: 0.875rem;
    }

    .footer-contact {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .footer-contact .separator {
        display: none;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }

    .footer-legal {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        font-size: 0.75rem;
    }

    .footer-legal .separator {
        display: none;
    }
    
    .footer-policies {
        font-size: 0.75rem;
    }

    /* 表单移动端优化 */
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .modal-content {
        padding: 2rem 1.25rem;
        width: 95%;
        max-height: 85vh;
    }
    
    .modal-header h2 {
        font-size: 1.5rem;
    }
    
    .modal-header p {
        font-size: 0.9rem;
    }
    
    .demo-form {
        gap: 1rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px; /* 防止iOS自动缩放 */
    }
    
    .submit-btn {
        font-size: 1rem;
        padding: 1rem;
    }
}

/* 超小屏幕优化（iPhone SE等） */
@media (max-width: 375px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .stat-item {
        min-width: 70px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        gap: 0.5rem;
    }
    
    .container {
        padding: 0 15px;
    }
}

/* 横屏模式优化 */
@media (max-width: 896px) and (orientation: landscape) {
    .hero {
        padding: 40px 0 30px;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: 0.9rem;
    }
    
    .modal-content {
        max-height: 95vh;
    }
}

/* 漂浮客服系统 */
.floating-customer-service {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 9999;
}

/* 客服按钮 */
.cs-button {
    position: relative;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.4);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid rgba(255, 255, 255, 0.2);
    animation: breathe 3s ease-in-out infinite;
}

/* 脉冲波纹效果 */
.cs-button::before {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    right: -8px;
    bottom: -8px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    opacity: 0;
    animation: ripple 2s ease-out infinite;
    z-index: -1;
}

/* 呼吸动画 */
@keyframes breathe {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 10px 30px rgba(37, 99, 235, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 15px 40px rgba(37, 99, 235, 0.6);
    }
}

/* 脉冲波纹动画 */
@keyframes ripple {
    0% {
        transform: scale(0.9);
        opacity: 0;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.3;
    }
    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}

/* 呼吸动画 */
@keyframes breathe {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 10px 30px rgba(37, 99, 235, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 15px 40px rgba(37, 99, 235, 0.6);
    }
}

.cs-button:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 15px 40px rgba(37, 99, 235, 0.5);
    animation-play-state: paused;
}

.cs-button:active {
    transform: translateY(-2px) scale(0.98);
}

.cs-icon {
    color: white;
    transition: transform 0.3s ease;
    animation: iconBreathe 4s ease-in-out infinite;
}

.cs-button:hover .cs-icon {
    transform: rotate(10deg) scale(1.1);
    animation-play-state: paused;
}

/* 图标呼吸动画 */
@keyframes iconBreathe {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.cs-bubble {
    position: absolute;
    top: -40px;
    right: 70px;
    background: white;
    color: #1e293b;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.cs-bubble::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -6px;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid white;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}

.cs-button:hover .cs-bubble {
    opacity: 1;
    transform: translateY(0);
}

.cs-notification {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #ef4444;
    color: white;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid white;
    animation: csPulse 2s ease-in-out infinite;
}

@keyframes csPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
}

/* 客服聊天窗口 */
.cs-chat-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 380px;
    height: 600px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(0, 0, 0, 0.1);
    transform: translateY(20px) scale(0.9);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    overflow: hidden;
}

.cs-chat-window.show {
    transform: translateY(0) scale(1);
    opacity: 1;
    visibility: visible;
}

/* 聊天头部 */
.cs-header {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    color: white;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.cs-avatar {
    flex-shrink: 0;
}

.cs-info {
    flex: 1;
}

.cs-name {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
}

.cs-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
}

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

@keyframes statusPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
    }
}

.status-text {
    opacity: 0.9;
}

.cs-actions {
    display: flex;
    gap: 8px;
}

.cs-minimize,
.cs-close {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.cs-minimize:hover,
.cs-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

/* 聊天内容区 */
.cs-messages {
    height: calc(100% - 180px);
    overflow-y: auto;
    padding: 20px;
    background: #f8fafc;
}

.cs-messages::-webkit-scrollbar {
    width: 6px;
}

.cs-messages::-webkit-scrollbar-track {
    background: transparent;
}

.cs-messages::-webkit-scrollbar-thumb {
    background: #e2e8f0;
    border-radius: 3px;
}

.cs-messages::-webkit-scrollbar-thumb:hover {
    background: #cbd5e1;
}

.cs-welcome {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cs-message {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.cs-message.bot {
    flex-direction: row;
}

.cs-message.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.cs-message.bot .message-avatar {
    background: #e3f2fd;
    color: #1976d2;
}

.cs-message.user .message-avatar {
    background: #2563eb;
    color: white;
}

.message-content {
    max-width: 70%;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.cs-message.bot .message-content {
    align-items: flex-start;
}

.cs-message.user .message-content {
    align-items: flex-end;
}

.message-text {
    background: white;
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.5;
    color: #1e293b;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    word-wrap: break-word;
}

.cs-message.user .message-text {
    background: #2563eb;
    color: white;
}

.message-time {
    font-size: 11px;
    color: #64748b;
    margin: 4px 8px 0 0;
}

.cs-message.user .message-time {
    text-align: right;
    color: #94a3b8;
}

/* 快捷回复 */
.quick-replies {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-top: 12px;
}

.quick-reply {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 20px;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 600;
    color: #475569;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.quick-reply:hover {
    border-color: #2563eb;
    background: #f0f9ff;
    color: #2563eb;
    transform: translateY(-2px);
}

/* 输入区域 */
.cs-input-area {
    padding: 20px;
    background: white;
    border-top: 1px solid #e2e8f0;
}

.cs-input-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 25px;
    padding: 8px;
    transition: all 0.3s ease;
}

.cs-input-wrapper:focus-within {
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: white;
}

.cs-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 8px 12px;
    font-size: 14px;
    color: #1e293b;
    outline: none;
}

.cs-input::placeholder {
    color: #94a3b8;
}

.cs-send {
    width: 36px;
    height: 36px;
    background: #2563eb;
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.cs-send:hover {
    background: #3b82f6;
    transform: scale(1.1);
}

.cs-send:active {
    transform: scale(0.95);
}

/* 快捷功能 */
.cs-quick-actions {
    display: flex;
    gap: 8px;
    padding: 12px 20px;
    background: #f8fafc;
    border-top: 1px solid #e2e8f0;
}

.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 600;
    color: #64748b;
    cursor: pointer;
    transition: all 0.3s ease;
}

.action-btn:hover {
    border-color: #2563eb;
    background: #f0f9ff;
    color: #2563eb;
    transform: translateY(-2px);
}

/* 客服系统响应式 */
@media (max-width: 480px) {
    .floating-customer-service {
        bottom: 20px;
        right: 20px;
    }
    
    .cs-button {
        width: 50px;
        height: 50px;
    }
    
    .cs-bubble {
        display: none;
    }
    
    .cs-chat-window {
        width: calc(100vw - 40px);
        height: calc(100vh - 120px);
        right: -10px;
        bottom: 70px;
    }
    
    .cs-header {
        padding: 16px;
    }
    
    .cs-name {
        font-size: 14px;
    }
    
    .cs-status {
        font-size: 12px;
    }
    
    .cs-messages {
        height: calc(100% - 200px);
        padding: 16px;
    }
    
    .message-text {
        font-size: 13px;
        padding: 10px 14px;
    }
    
    .quick-replies {
        grid-template-columns: 1fr;
        gap: 6px;
    }
    
    .quick-reply {
        padding: 10px 12px;
        font-size: 13px;
    }
    
    .cs-input-area {
        padding: 16px;
    }
    
    .cs-quick-actions {
        padding: 10px 16px;
        flex-wrap: wrap;
    }
    
    .action-btn {
        flex: 1 1 calc(50% - 4px);
        font-size: 10px;
        padding: 6px;
    }
}

/* 横屏模式优化 */
@media (max-width: 896px) and (orientation: landscape) {
    .cs-chat-window {
        height: 450px;
    }
    
    .cs-messages {
        height: calc(100% - 160px);
    }
}