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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
    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;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 24px;
    color: #333;
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    color: #666;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

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

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: all 0.3s ease;
}

/* 主页面 */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.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="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(180deg, transparent 0%, rgba(248, 250, 252, 0.3) 50%, rgba(248, 250, 252, 0.8) 100%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, #fff 0%, #f093fb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 16px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.hero-stats {
    display: flex;
    gap: 40px;
    justify-content: center;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
}

/* 设备展示 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.device-mockup {
    position: relative;
    z-index: 2;
}

.phone-frame {
    width: 300px;
    height: 600px;
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border-radius: 40px;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: relative;
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 6px;
    background: #444;
    border-radius: 3px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 30px;
    overflow: hidden;
    position: relative;
}

.app-interface {
    padding: 30px 20px;
    height: 100%;
    color: white;
}

.app-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
}

.app-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.app-info {
    flex: 1;
}

.app-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.device-count {
    font-size: 14px;
    opacity: 0.8;
}

.device-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.device-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.device-icon {
    font-size: 24px;
}

.device-name {
    flex: 1;
    font-weight: 500;
}

.device-status {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ccc;
}

.device-status.online {
    background: #4CAF50;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.3);
    animation: pulse 2s infinite;
}

.device-status.offline {
    background: rgba(255, 255, 255, 0.3);
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-icon {
    position: absolute;
    font-size: 40px;
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.floating-icon.wifi {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-icon.bluetooth {
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.floating-icon.power {
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

/* 功能特色 */
.features {
    padding: 120px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 50%, #e2e8f0 100%);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.05) 50%, transparent 100%);
    pointer-events: none;
}

.features::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(180deg, transparent 0%, rgba(102, 126, 234, 0.1) 50%, rgba(102, 126, 234, 0.3) 100%);
    pointer-events: none;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: #1a202c;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

/* 中屏幕 2x2 布局 */
@media (max-width: 1024px) and (min-width: 769px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
        max-width: 800px;
    }
}

/* 小屏幕保持 2x2 但缩小卡片 */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 15px;
        padding: 0 15px;
        max-width: 100%;
    }
    
    .feature-card {
        padding: 15px !important;
        border-radius: 10px;
        min-height: auto;
    }
    
    .feature-icon {
        font-size: 1.8rem !important;
        margin-bottom: 12px;
    }
    
    .feature-title {
        font-size: 1rem !important;
        margin-bottom: 8px;
        line-height: 1.3;
    }
    
    .feature-description {
        font-size: 0.85rem !important;
        line-height: 1.4;
    }
}

/* 超小屏幕进一步优化 */
@media (max-width: 480px) {
    .features-grid {
        gap: 10px;
        padding: 0 10px;
    }
    
    .feature-card {
        padding: 12px !important;
    }
    
    .feature-icon {
        font-size: 1.5rem !important;
    }
    
    .feature-title {
        font-size: 0.9rem !important;
    }
    
    .feature-description {
        font-size: 0.8rem !important;
    }
}

.feature-card {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 24px;
    display: block;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: #1a202c;
}

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

/* 工作原理 */
.how-it-works {
    padding: 120px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
}

.how-it-works::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, rgba(241, 245, 249, 0.3) 0%, rgba(226, 232, 240, 0.1) 50%, transparent 100%);
    pointer-events: none;
}

.how-it-works::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(180deg, transparent 0%, rgba(26, 32, 44, 0.2) 50%, rgba(26, 32, 44, 0.4) 100%);
    pointer-events: none;
}

/* 提升“工作原理”副标题可读性 */
.how-it-works .section-subtitle {
    color: rgba(255, 255, 255, 0.95);
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
}

.steps-container {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 20px;
    max-width: 100%;
    padding: 0 20px;
    flex-wrap: nowrap;
}

.step-item {
    flex: 1;
    min-width: 0;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 300px;
}

.step-number {
    width: min(80px, 12vw);
    height: min(80px, 12vw);
    background: rgba(255, 255, 255, 0.2);
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: min(2rem, 3vw);
    font-weight: 700;
    margin: 0 auto min(24px, 3vw);
    backdrop-filter: blur(10px);
}

.step-title {
    font-size: min(1.5rem, 2.2vw);
    font-weight: 600;
    margin-bottom: min(16px, 2vw);
}

.step-description {
    opacity: 0.9;
    line-height: 1.6;
    margin-bottom: min(24px, 3vw);
    font-size: min(1rem, 1.4vw);
}

.step-visual {
    margin-top: min(20px, 2.5vw);
}

.visual-bluetooth,
.visual-connect,
.visual-wake {
    font-size: min(2rem, 3vw);
    padding: min(20px, 2.5vw);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.step-arrow {
    display: none;
}


/* 下载体验 */
.download {
    padding: 120px 0;
    background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
    color: white;
    position: relative;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.1) 50%, transparent 100%);
    pointer-events: none;
}

.download::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(180deg, transparent 0%, rgba(26, 32, 44, 0.3) 50%, rgba(26, 32, 44, 0.6) 100%);
    pointer-events: none;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.download-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.download-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.6;
}

.version-info {
    margin-bottom: 40px;
}

.version-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.1);
    padding: 12px 20px;
    border-radius: 50px;
    margin-bottom: 12px;
    backdrop-filter: blur(10px);
}

.version-label {
    font-size: 14px;
    opacity: 0.8;
}

.version-number {
    font-weight: 600;
    color: #4CAF50;
}

.update-date {
    font-size: 14px;
    opacity: 0.7;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 30px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    text-decoration: none;
    color: white;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.btn-icon {
    font-size: 2rem;
}

.btn-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.btn-subtitle {
    font-size: 14px;
    opacity: 0.8;
}

.download-visual {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding-left: 40px;
}

.qr-code {
    width: 280px;
    height: 280px;
    background: white;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    padding: 20px;
}

.qr-image {
    width: 240px;
    height: 240px;
    border-radius: 12px;
    object-fit: cover;
}

.qr-text {
    font-size: 14px;
    font-weight: 500;
    color: #666;
    margin-top: 12px;
    text-align: center;
}

/* 价格信息样式 */
.pricing-info {
    margin-top: 30px;
    text-align: center;
}

.pricing-title {
    font-size: 1.3rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
    background: linear-gradient(135deg, #ffffff 0%, #f7fafc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.3));
}

.pricing-options {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: nowrap;
    max-width: 100%;
    margin: 0 auto;
}

.pricing-option {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    min-width: 140px;
    flex: 1;
    max-width: 220px;
    text-align: center;
    transition: all 0.3s ease;
}

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

.pricing-option.recommended {
    border-color: #667eea;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
}

.pricing-option.recommended::before {
    content: "推荐";
    position: absolute;
    top: -8px;
    right: -8px;
    background: #ff6b6b;
    color: white;
    font-size: 0.7rem;
    padding: 4px 8px;
    border-radius: 12px;
    font-weight: 600;
}

.price {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #1a202c;
    display: block;
}

.period {
    font-size: 1rem;
    font-weight: 500;
    opacity: 0.8;
}

.price-desc {
    font-size: 0.9rem;
    color: #4a5568;
    margin-bottom: 8px;
    font-weight: 500;
}

.pricing-option.recommended .price-desc {
    color: rgba(255, 255, 255, 0.9);
}

.bonus {
    font-size: 0.7rem;
    color: #4ade80;
    font-weight: 600;
    background: rgba(74, 222, 128, 0.1);
    padding: 4px 8px;
    border-radius: 6px;
    margin-top: 8px;
}

.pricing-option.recommended .bonus {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

/* 设备购买选项样式 */
.pricing-option.device {
    border-color: #38b2ac;
    background: linear-gradient(135deg, #38b2ac 0%, #319795 100%);
    color: white;
    position: relative;
}

.pricing-option.device::before {
    content: "硬件";
    position: absolute;
    top: -8px;
    right: -8px;
    background: #2d3748;
    color: white;
    font-size: 0.7rem;
    padding: 4px 8px;
    border-radius: 12px;
    font-weight: 600;
}

.device-info {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    margin-top: 8px;
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 8px;
    border-radius: 6px;
}

/* 页脚 */
.footer {
    background: #1a202c;
    color: white;
    padding: 80px 0 40px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(180deg, rgba(45, 55, 72, 0.3) 0%, rgba(26, 32, 44, 0.1) 50%, transparent 100%);
    pointer-events: none;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 24px;
    margin-bottom: 20px;
}

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

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

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

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.8);
}

.contact-icon {
    font-size: 16px;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    opacity: 0.6;
}

.footer-copyright p {
    margin: 8px 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.icp-info {
    margin-top: 12px !important;
}

.icp-info a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.3s ease;
}

.icp-info a:hover {
    color: rgba(255, 255, 255, 0.8);
}

/* 动画 */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

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

/* 平板尺寸以上按钮布局 */
@media (min-width: 769px) {
    .hero-buttons {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 20px;
        flex-wrap: nowrap;
        flex-direction: row !important;
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-buttons {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 20px;
        flex-wrap: nowrap;
        flex-direction: row !important;
    }
    
    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
        gap: 30px;
    }
    
    /* 工作原理平板端优化 */
    .how-it-works {
        padding: 100px 0;
    }
    
    .steps-container {
        gap: min(30px, 3.5vw);
        padding: 0 15px;
    }
    
    .download-content {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }
    
    /* 价格信息平板端优化 */
    .pricing-options {
        max-width: 650px;
        gap: 12px;
        flex-wrap: wrap;
    }
    
    .pricing-option {
        min-width: 140px;
        max-width: 150px;
        padding: 18px;
    }
    
    /* 功能特色平板端过渡优化 */
    .features::before {
        height: 80px;
    }
    
    .features::after {
        height: 60px;
    }
    
    .how-it-works::before {
        height: 80px;
    }
    
    .how-it-works::after {
        height: 60px;
    }
    
    .download::before {
        height: 80px;
    }
    
    .download::after {
        height: 60px;
    }
    
    .footer::before {
        height: 60px;
    }
    
    /* Footer平板端优化 */
    .footer {
        padding: 60px 0 30px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 30px;
    }
    
    /* 隐藏智能唤醒部分 */
    .footer-section:first-child {
        display: none;
    }
    
    .footer-logo {
        font-size: 20px;
        margin-bottom: 16px;
    }
    
    .footer-title {
        font-size: 0.9rem;
        margin-bottom: 16px;
    }
    
    .footer-links li {
        margin-bottom: 8px;
    }
    
    .footer-links a {
        font-size: 0.85rem;
    }
    
    .contact-info {
        gap: 8px;
    }
    
    .contact-item {
        font-size: 0.85rem;
    }
}

/* 中等屏幕优化 */
@media (max-width: 900px) {
    .steps-container {
        gap: min(25px, 3vw);
        padding: 0 15px;
    }
    
    /* 价格信息中等屏幕优化 */
    .pricing-options {
        max-width: 600px;
        gap: 12px;
        flex-wrap: wrap;
    }
    
    .pricing-option {
        min-width: 130px;
        max-width: 140px;
        padding: 16px;
    }
    
    .price {
        font-size: 1.6rem;
    }
}

/* 平板竖屏优化 */
@media (max-width: 834px) {
    .hero-container {
        gap: 30px;
        padding: 0 20px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 15px;
        flex-wrap: nowrap;
        flex-direction: row !important;
    }
    
    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
        gap: 25px;
    }
    
    /* 工作原理平板端优化 */
    .how-it-works {
        padding: 80px 0;
    }
    
    .steps-container {
        gap: min(20px, 2.5vw);
        padding: 0 10px;
    }
    
    /* Footer平板竖屏优化 */
    .footer {
        padding: 50px 0 25px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 20px;
        padding: 0 20px;
    }
    
    /* 隐藏智能唤醒部分 */
    .footer-section:first-child {
        display: none;
    }
    
    .footer-logo {
        font-size: 18px;
        margin-bottom: 14px;
    }
    
    .footer-title {
        font-size: 0.85rem;
        margin-bottom: 14px;
    }
    
    .footer-links li {
        margin-bottom: 6px;
    }
    
    .footer-links a {
        font-size: 0.8rem;
    }
    
    .contact-info {
        gap: 6px;
    }
    
    .contact-item {
        font-size: 0.8rem;
    }
}

@media (max-width: 768px) {
    /* 通用移动端容器样式 */
    .container {
        padding: 0 15px;
        max-width: 100%;
        overflow: hidden;
    }
    
    .hero {
        min-height: 100vh;
        display: flex;
        align-items: center;
    }
    
    .hero-container {
        gap: 20px;
        padding: 0 15px;
        max-width: 100%;
        overflow: hidden;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 50px;
        transition: left 0.3s ease;
        z-index: 999;
        display: flex;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu .nav-link {
        font-size: 1.2rem;
        margin: 20px 0;
        color: #333;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-title {
        font-size: 2rem;
        margin-bottom: 12px;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        margin-bottom: 20px;
        line-height: 1.4;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        margin-bottom: 15px;
        gap: 10px;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
    }
    
    .hero-visual {
        order: -1;
        margin-bottom: 30px;
        margin-top: 20px;
        z-index: 1;
        position: relative;
    }
    
    .device-mockup {
        position: relative;
        z-index: 2;
    }
    
    .phone-frame {
        width: min(308px, 80vw);
        height: min(616px, 160vw);
        margin: 0 auto;
        max-width: 100%;
    }
    
    .app-interface {
        padding: 25px 15px;
    }
    
    .app-header {
        margin-bottom: 25px;
    }
    
    .app-icon {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .app-title {
        font-size: 14px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .device-count {
        font-size: 10px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .device-name {
        font-size: 12px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        flex: 1;
    }
    
    .device-card {
        padding: 15px;
        gap: 12px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features {
        padding: 60px 0;
    }
    
    .features::before {
        height: 60px;
    }
    
    .features::after {
        height: 50px;
    }
    
    .how-it-works::before {
        height: 60px;
    }
    
    .how-it-works::after {
        height: 50px;
    }
    
    .download::before {
        height: 60px;
    }
    
    .download::after {
        height: 50px;
    }
    
    .footer::before {
        height: 50px;
    }
    
    .steps-container {
        gap: min(12px, 1.5vw);
        padding: 0 8px;
    }
    
    /* 超小屏幕隐藏步骤描述 */
    .step-description {
        display: none;
    }
    
    /* 超小屏幕进一步优化步骤标题 */
    .step-title {
        font-size: min(1rem, 1.8vw);
        margin-bottom: min(8px, 1vw);
        line-height: 1.2;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 100%;
    }
    
    .step-number {
        width: min(60px, 10vw);
        height: min(60px, 10vw);
        font-size: min(1.5rem, 2.5vw);
        margin-bottom: min(16px, 2vw);
    }
    
    /* 极小屏幕进一步优化 */
    @media (max-width: 320px) {
        .step-title {
            font-size: min(0.8rem, 1.4vw);
            line-height: 1.0;
        }
        
        .step-number {
            width: min(50px, 8vw);
            height: min(50px, 8vw);
            font-size: min(1.2rem, 2vw);
            margin-bottom: min(12px, 1.5vw);
        }
        
        .steps-container {
            gap: min(8px, 1vw);
            padding: 0 5px;
        }
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        padding: 0 15px;
        max-width: 100%;
    }
    
    .feature-card {
        padding: 15px;
        border-radius: 12px;
        min-height: auto;
    }
    
    .feature-icon {
        font-size: 1.8rem;
        margin-bottom: 12px;
    }
    
    .feature-title {
        font-size: 1rem;
        margin-bottom: 8px;
        line-height: 1.3;
    }
    
    .feature-description {
        font-size: 0.85rem;
        line-height: 1.4;
    }
}

/* 超小屏幕进一步优化 */
@media (max-width: 480px) {
    .features-grid {
        gap: 12px;
        padding: 0 12px;
    }
    
    .feature-card {
        padding: 12px;
    }
    
    .feature-icon {
        font-size: 1.5rem;
    }
    
    .feature-title {
        font-size: 0.9rem;
    }
    
    .feature-description {
        font-size: 0.8rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .phone-frame {
        width: min(275px, 70vw);
        height: min(550px, 140vw);
        max-width: 100%;
    }
    
    .app-interface {
        padding: 20px 12px;
    }
    
    .app-header {
        margin-bottom: 20px;
    }
    
    .app-icon {
        width: 35px;
        height: 35px;
        font-size: 18px;
    }
    
    .app-title {
        font-size: 12px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .device-count {
        font-size: 9px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .device-name {
        font-size: 11px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .device-card {
        padding: 12px;
        gap: 10px;
    }
    
    .steps-container {
        gap: min(15px, 2vw);
        padding: 0 10px;
    }
    
    /* 移动端小屏幕隐藏步骤描述 */
    @media (max-width: 360px) {
        .step-description {
            display: none;
        }
        
        .step-title {
            font-size: min(0.9rem, 1.6vw);
            line-height: 1.1;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
    }
    
    /* 工作原理移动端优化 */
    .how-it-works {
        padding: 60px 0;
    }
    
    .step-item {
        max-width: 100%;
        min-width: auto;
        margin: 0 15px;
    }
    
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .step-title {
        font-size: 1.3rem;
    }
    
    .step-description {
        font-size: 0.9rem;
    }
    
    
    .footer-content {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 20px;
        text-align: center;
    }
    
    /* 隐藏智能唤醒部分 */
    .footer-section:first-child {
        display: none;
    }
    
    /* Footer移动端优化 */
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-logo {
        font-size: 18px;
        margin-bottom: 12px;
        justify-content: center;
    }
    
    
    .footer-title {
        font-size: 0.8rem;
        margin-bottom: 12px;
    }
    
    .footer-links li {
        margin-bottom: 6px;
    }
    
    .footer-links a {
        font-size: 0.75rem;
    }
    
    .contact-info {
        gap: 6px;
        align-items: center;
    }
    
    .contact-item {
        font-size: 0.75rem;
        justify-content: center;
    }
    
    .phone-frame {
        width: 250px;
        height: 500px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .download-title {
        font-size: 2rem;
    }
    
    .phone-frame {
        width: 200px;
        height: 400px;
        padding: 15px;
    }
    
    .app-interface {
        padding: 20px 15px;
    }
    
    /* Footer超小屏幕优化 */
    .footer {
        padding: 30px 0 15px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 15px;
        padding: 0 15px;
    }
    
    .footer-logo {
        font-size: 16px;
        margin-bottom: 10px;
    }
    
    .footer-title {
        font-size: 0.75rem;
        margin-bottom: 10px;
    }
    
    .footer-links li {
        margin-bottom: 4px;
    }
    
    .footer-links a {
        font-size: 0.7rem;
    }
    
    .contact-item {
        font-size: 0.7rem;
    }
    
    /* 隐藏智能唤醒部分 */
    .footer-section:first-child {
        display: none;
    }
}

/* 二维码标题 */
.qr-title {
    font-size: 16px;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 10px;
}

/* 优化二维码卡片视觉（统一样式，避免冲突） */
.qr-code {
    max-width: 320px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.14);
}

.qr-image {
    width: 240px;
    height: 240px;
}

.qr-text {
    margin-top: 12px;
}

/* 移动端布局优化：下载区单列、内容居中 */
@media (max-width: 768px) {
    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .download-visual {
        justify-content: center;
        padding-left: 0;
    }
    
    /* 价格信息移动端优化 */
    .pricing-options {
        flex-direction: column;
        align-items: center;
        gap: 15px;
        max-width: 100%;
    }
    
    .pricing-option {
        width: 100%;
        max-width: 250px;
        padding: 15px;
        flex: none;
    }
    
    .price {
        font-size: 1.5rem;
    }
}