/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    /* 禁用移动端双击放大 */
    touch-action: manipulation;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #F7F8FF;
    /* 禁用移动端双击放大 */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

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

/* 导航栏样式 */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar {
    padding: 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo img {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: #007bff;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 10px 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #007bff;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: #007bff;
}

.nav-auth {
    display: flex;
    gap: 15px;
}

.btn-login,
.btn-register {
    padding: 8px 20px;
    border: 1px solid #007bff;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-login {
    background: transparent;
    color: #007bff;
}

.btn-login:hover {
    background: #007bff;
    color: white;
}

.btn-register {
    background: #007bff;
    color: white;
}

.btn-register:hover {
    background: #0056b3;
}

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

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主横幅区域 */
.hero {
    margin-top: 70px;
    background: linear-gradient(rgba(59, 130, 246, 0.4), rgba(37, 99, 235, 0.4)), url('images/10003.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    padding: 120px 0;
    position: relative;
    overflow: hidden;
    min-height: 70vh;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.1);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.6);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* Hero CTA 按钮 */
.hero-cta {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

.cta-btn {
    padding: 18px 36px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    min-width: 160px;
}

.cta-btn.primary {
    background: rgba(59, 130, 246, 0.9);
    backdrop-filter: blur(10px);
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.3);
}

.cta-btn.primary:hover {
    background: rgba(37, 99, 235, 1);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(59, 130, 246, 0.4);
}

.cta-btn.secondary {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 32px rgba(255, 255, 255, 0.1);
}

.cta-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.7);
}

/* 平台数据展示 */
.statistics {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8faff 0%, #e8f0ff 100%);
    position: relative;
    overflow: hidden;
}

.statistics::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
    z-index: 2;
}

.stat-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(59, 130, 246, 0.1);
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(59, 130, 246, 0.08);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(59, 130, 246, 0.05), rgba(37, 99, 235, 0.02));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #007bff, #0056b3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: white;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
}

.stat-card:hover .stat-icon {
    background: linear-gradient(135deg, #0056b3, #003d82);
    transform: scale(1.1);
    box-shadow: 0 12px 24px rgba(59, 130, 246, 0.4);
}

.stat-content {
    position: relative;
    z-index: 2;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: #1e40af;
    line-height: 1;
    display: inline-block;
}

.stat-unit {
    font-size: 2.5rem;
    font-weight: 600;
    color: #3b82f6;
    display: inline-block;
    margin-left: 5px;
}

.stat-label {
    font-size: 1.1rem;
    color: #4b5563;
    margin-top: 10px;
    font-weight: 500;
}

/* 业务板块 */
.business-sections {
    padding: 60px 0;
    background: #F7F8FF;
    position: relative;
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.business-card {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.12);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.business-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.35);
    box-shadow: 0 15px 40px rgba(0, 123, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

.business-image {
    width: 100%;
    height: 200px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

.business-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 60%, rgba(0, 0, 0, 0.3));
}

.business-content {
    padding: 25px;
    text-align: center;
    position: relative;
}

.business-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.business-content p {
    color: #666;
    font-size: 1rem;
    line-height: 1.5;
}

/* 品牌宣传板块 */
.brand-promotion {
    position: relative;
    overflow: hidden;
    background: #F7F8FF;
    padding-top: 60px;
}

.brand-header {
    text-align: center;
    margin-bottom: 40px;
}

.brand-main-title {
    font-size: 3rem;
    font-weight: 700;
    color: #3b82f6;
    margin-bottom: 25px;
    position: relative;
    display: inline-block;
}

.brand-main-title::before {
    content: '';
    position: absolute;
    left: -60px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    border-radius: 2px;
}

.brand-main-title::after {
    content: '';
    position: absolute;
    right: -60px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 4px;
    background: linear-gradient(90deg, #1d4ed8, #3b82f6);
    border-radius: 2px;
}

.title-decoration {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 15px 0;
}

.decoration-line {
    width: 30px;
    height: 2px;
    background: linear-gradient(90deg, #3b82f6, #1d4ed8);
    border-radius: 1px;
}

.decoration-dot {
    width: 8px;
    height: 8px;
    background: #3b82f6;
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.4);
}

.brand-main-subtitle {
    font-size: 1.3rem;
    color: #666;
    font-weight: 300;
}

.brand-background {
    width: 100%;
    min-height: 900px;
    height: auto;
    background-size: cover;
    background-position: center top;
    background-repeat: repeat-y;
    position: relative;
}

.brand-overlay {
    position: relative;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(0, 0, 0, 0.4) 0%,
        rgba(0, 0, 0, 0.2) 50%,
        rgba(0, 0, 0, 0.3) 100%
    );
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100%;
    padding: 60px 0;
}

.brand-content {
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 20px;
}

.brand-main {
    text-align: center;
}

.brand-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    color: white;
}

.brand-subtitle {
    font-size: 1.3rem;
    font-weight: 600;
    color: white;
    margin-bottom: 25px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.brand-description {
    margin-bottom: 40px;
}

.brand-description p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    font-weight: 300;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.brand-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 25px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.feature-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    background: rgba(59, 130, 246, 0.8);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 2px solid rgba(59, 130, 246, 0.5);
}

.feature-content {
    flex: 1;
    text-align: left;
}

.feature-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: white;
    margin-bottom: 8px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.feature-content p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
    font-weight: 300;
}

.brand-video {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.brand-video:hover {
    transform: scale(1.05);
}

.play-button {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.play-button:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.play-button i {
    font-size: 24px;
    color: white;
    margin-left: 4px;
}

.video-text {
    font-size: 1.1rem;
    font-weight: 500;
    color: white;
}

.brand-download {
    margin-top: 40px;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.download-btn i {
    font-size: 28px;
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.btn-label {
    font-size: 10px;
    opacity: 0.8;
}

.btn-title {
    font-size: 14px;
    font-weight: 600;
    margin-top: 2px;
}

/* 服务特色 */
.features {
    padding: 80px 0;
    background: #F7F8FF;
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #333;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    border-radius: 8px;
    background: #f8f9fa;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-icon i {
    font-size: 24px;
}

/* 目标群体样式 */
.target-group {
    margin-bottom: 80px;
}

.target-group:last-child {
    margin-bottom: 0;
}

.group-title {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 40px;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

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

.feature-card h3,
.feature-card h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

/* 房管家卡片样式 */
.feature-card.landlord {
    background: rgba(248, 251, 255, 0.3);
    backdrop-filter: blur(12px);
    border: 2px solid rgba(0, 123, 255, 0.2);
    position: relative;
}



.feature-card.landlord:hover {
    background: rgba(248, 251, 255, 0.5);
    border-color: rgba(0, 123, 255, 0.4);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 123, 255, 0.25);
}

.feature-card.landlord .feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e7f3ff 0%, #cce7ff 100%);
    border: 2px solid #3b82f6;
    font-size: 24px;
}

.feature-card.landlord .feature-icon i {
    color: #3b82f6;
    font-size: 24px;
}

/* 租客卡片样式 */
.feature-card.tenant {
    background: rgba(255, 250, 244, 0.3);
    backdrop-filter: blur(12px);
    border: 2px solid rgba(250, 148, 77, 0.2);
    position: relative;
}



.feature-card.tenant:hover {
    background: rgba(255, 250, 244, 0.5);
    border-color: rgba(250, 148, 77, 0.4);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(250, 148, 77, 0.25);
}

.feature-card.tenant .feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #fff5f0 0%, #ffe8d6 100%);
    border: 2px solid #FA944D;
    font-size: 24px;
}

.feature-card.tenant .feature-icon i {
    color: #FA944D;
    font-size: 24px;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* 房源展示 */
.properties {
    padding: 80px 0;
    background: #F7F8FF;
    position: relative;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px;
    flex-wrap: wrap;
    gap: 20px;
}

.property-filters {
    display: flex;
    gap: 10px;
}

.filter-btn {
    padding: 10px 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.1);
}

.filter-btn.active,
.filter-btn:hover {
    background: rgba(0, 123, 255, 0.9);
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 123, 255, 0.3);
}

.properties-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.property-card {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.property-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.4);
    box-shadow: 0 15px 35px rgba(0, 123, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.property-image {
    width: 100%;
    height: 200px;
    position: relative;
    overflow: hidden;
}

.property-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.property-image:hover img {
    transform: scale(1.05);
}

.property-info {
    padding: 20px;
}

.property-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.property-location {
    color: #666;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.property-location i {
    color: #3b82f6;
    font-size: 0.9rem;
}

.property-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.property-specs {
    display: flex;
    gap: 15px;
    font-size: 14px;
    color: #666;
}

.property-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: #e74c3c;
}

.property-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    padding: 4px 8px;
    background: #e7f3ff;
    color: #007bff;
    border-radius: 4px;
    font-size: 12px;
}

.load-more {
    text-align: center;
}

.btn-load-more {
    padding: 15px 40px;
    background: rgba(0, 123, 255, 0.9);
    backdrop-filter: blur(10px);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 123, 255, 0.3);
}

.btn-load-more:hover {
    background: rgba(0, 123, 255, 1);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 123, 255, 0.4);
}

/* 联系我们 */
.contact {
    padding: 60px 0;
    background: #F7F8FF;
    position: relative;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: #333;
}

.contact-info p {
    margin-bottom: 15px;
    color: #666;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
    line-height: 1.5;
}

.contact-info p i {
    color: #3b82f6;
    width: 20px;
    flex-shrink: 0;
}

/* 确保联系信息文本不会不合理换行 */
.contact-info p {
    word-wrap: break-word;
    word-break: normal;
    white-space: nowrap;
}

/* 地址信息允许合理换行 */
.contact-info .address-info {
    white-space: normal;
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.phone-info {
    position: relative;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.phone-link {
    color: #3b82f6;
    text-decoration: none;
}

.phone-link:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: #3b82f6;
    text-decoration: none;
    transform: scale(1.02);
}

.email-link {
    color: #3b82f6;
    text-decoration: none;
    transition: color 0.3s ease;
}

.email-link:hover {
    color: #2563eb;
    text-decoration: underline;
}

.click-tip {
    font-size: 0.8rem;
    color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
    padding: 4px 8px;
    border-radius: 8px;
    font-weight: 500;
    animation: pulse 2s infinite;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.qr-code {
    text-align: center;
}

.qr-code img {
    width: 200px;
    height: 200px;
    display: block;
    margin: 0 auto 10px;
}

.qr-code p {
    font-size: 1rem;
    margin: 0;
    color: #666;
    font-weight: 500;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
    transition: all 0.3s ease;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: linear-gradient(135deg, #2563eb, #1e40af);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(59, 130, 246, 0.4);
}

.back-to-top:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 16px;
    }
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: white;
}

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

.footer-section li {
    margin-bottom: 10px;
}

.footer-section a {
    color: #bbb;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    color: #bbb;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .business-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}

@media (max-width: 900px) {
    .business-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .hero {
        margin-top: 70px;
        padding: 100px 0;
        min-height: 60vh;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .cta-btn {
        width: 100%;
        max-width: 280px;
    }
    
    .section-header {
        flex-direction: column;
        text-align: center;
    }
    
    .properties-grid {
        grid-template-columns: 1fr;
    }
    
        .business-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    /* 统计数据移动端优化 */
    .statistics {
        padding: 60px 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-card {
        padding: 30px 15px;
    }
    
    .stat-icon {
        width: 60px;
        height: 60px;
        font-size: 28px;
        margin-bottom: 15px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .stat-unit {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 1rem;
    }

    /* 品牌宣传板块移动端优化 */
    .brand-promotion {
        padding-top: 40px;
    }
    
    .brand-header {
        margin-bottom: 30px;
        padding: 0 20px;
    }
    
    .brand-background {
        min-height: 100vh;
        height: auto;
    }
    
    .brand-content {
        padding: 0 15px;
    }
    
    .brand-overlay {
        padding: 40px 0 60px 0;
        align-items: flex-start;
    }
    
    .brand-main-title {
        font-size: 2.5rem;
    }
    
    .brand-main-title::before,
    .brand-main-title::after {
        display: none;
    }
    
    .brand-main-subtitle {
        font-size: 1.1rem;
    }
    
    .brand-title {
        font-size: 2rem;
    }
    
    .brand-subtitle {
        font-size: 1rem;
    }
    
    .brand-description {
        margin-bottom: 30px;
    }
    
    .brand-description p {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .brand-features {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-bottom: 40px;
    }
    
    .feature-item {
        padding: 20px;
    }
    
    .feature-number {
        width: 40px;
        height: 40px;
        font-size: 1.3rem;
    }
    
    .feature-content h4 {
        font-size: 1.1rem;
    }
    
    .feature-content p {
        font-size: 0.9rem;
    }
    
    .brand-video {
        margin-bottom: 25px;
    }
    
    .play-button {
        width: 65px;
        height: 65px;
    }
    
    .video-text {
        font-size: 1rem;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .download-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-info p {
        flex-direction: row;
        align-items: flex-start;
        gap: 8px;
        flex-wrap: wrap;
        word-break: normal;
        white-space: nowrap;
    }
    

    
    .phone-info {
        flex-direction: row;
        align-items: center;
        gap: 8px;
        flex-wrap: wrap;
    }
    
    .phone-info > i {
        margin-right: 4px;
        align-self: flex-start;
        margin-top: 2px;
    }
    
    .click-tip {
        margin-left: 0;
        align-self: center;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .business-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .brand-background {
        min-height: 100vh;
        height: auto;
    }
    
    .brand-header {
        padding: 0 15px;
    }
    
    .brand-main-title {
        font-size: 2.2rem;
    }
    
    .brand-main-title::before,
    .brand-main-title::after {
        display: none;
    }
    
    .decoration-line {
        width: 20px;
        height: 2px;
    }
    
    .decoration-dot {
        width: 6px;
        height: 6px;
    }
    
    .brand-main-subtitle {
        font-size: 1rem;
    }
    
    .brand-description p br {
        display: none;
    }
    
    .download-buttons {
        padding: 0 20px;
        margin-bottom: 40px;
    }
}

@media (max-width: 480px) {
    .hero {
        margin-top: 70px;
        padding: 80px 0;
        min-height: 50vh;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
        .section-subtitle {
        font-size: 1rem;
        margin-bottom: 40px;
    }

    /* 统计数据超小屏幕优化 */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .stat-card {
        padding: 25px 15px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-unit {
        font-size: 1.5rem;
    }

    .group-title {
        font-size: 1.5rem;
        flex-direction: column;
        gap: 10px;
    }
    
    .target-group {
        margin-bottom: 60px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card h4 {
        font-size: 1.3rem;
    }
    
    .properties-grid {
        grid-template-columns: 1fr;
    }
    
    .business-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .business-content {
        padding: 20px 15px;
    }
    
    .business-content h3 {
        font-size: 1.3rem;
    }
    
    /* 小屏幕品牌宣传优化 */
    .brand-promotion {
        padding-top: 30px;
    }
    
    .brand-header {
        margin-bottom: 25px;
        padding: 0 15px;
    }
    
    .brand-background {
        min-height: 100vh;
        height: auto;
    }
    
    .brand-content {
        padding: 0 10px;
    }
    
    .brand-overlay {
        padding: 30px 0 80px 0;
        align-items: flex-start;
    }
    
    .brand-main-title {
        font-size: 2rem;
    }
    
    .brand-main-subtitle {
        font-size: 0.95rem;
    }
    
    .brand-title {
        font-size: 1.8rem;
    }
    
    .brand-subtitle {
        font-size: 0.9rem;
        margin-bottom: 25px;
    }
    
    .brand-description {
        margin-bottom: 25px;
    }
    
    .brand-description p {
        font-size: 0.9rem;
        line-height: 1.4;
    }
    
    .brand-features {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-bottom: 40px;
    }
    
    .feature-item {
        padding: 18px;
        flex-direction: column;
        text-align: center;
        gap: 15px;
        align-items: center;
    }
    
    .feature-number {
        width: 35px;
        height: 35px;
        font-size: 1.1rem;
        flex-shrink: 0;
        margin: 0 auto;
    }
    
    .feature-content {
        flex: 1;
    }
    
    .feature-content p {
        font-size: 0.85rem;
        line-height: 1.4;
    }
    
    .feature-content {
        text-align: center;
    }
    
    .feature-content h4 {
        font-size: 1.1rem;
    }
    
    .feature-content p {
        font-size: 0.85rem;
        line-height: 1.4;
    }
    
    .brand-video {
        margin-bottom: 30px;
    }
    
    .play-button {
        width: 60px;
        height: 60px;
    }
    
    .video-text {
        font-size: 0.95rem;
    }
    
    .download-buttons {
        padding: 0 15px;
        margin-bottom: 40px;
    }
    
    .download-btn {
        padding: 12px 15px;
        font-size: 0.9rem;
    }
    
    .btn-label {
        font-size: 9px;
    }
    
    .btn-title {
        font-size: 12px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 375px) {
    .brand-background {
        min-height: 100vh;
        height: auto;
    }
    
    .brand-main-title {
        font-size: 1.8rem;
    }
    
    .brand-title {
        font-size: 1.6rem;
    }
    
    .brand-subtitle {
        font-size: 0.85rem;
    }
    
    .brand-description p {
        font-size: 0.85rem;
    }
    
    .feature-item {
        padding: 12px;
    }
    
    .feature-content h4 {
        font-size: 1rem;
    }
    
    .feature-content p {
        font-size: 0.8rem;
    }
    
    .download-btn {
        padding: 10px 12px;
    }
    
    .play-button {
        width: 55px;
        height: 55px;
    }
    
    .video-text {
        font-size: 0.9rem;
    }
}

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

.property-card,
.feature-card {
    animation: fadeInUp 0.6s ease forwards;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #007bff;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}

/* 移动端导航面板 */
.mobile-nav-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-nav-panel.active {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
}

.mobile-nav-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.mobile-nav-content {
    position: relative;
    width: 85%;
    max-width: 350px;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.1);
}

.mobile-nav-panel.active .mobile-nav-content {
    transform: translateX(0);
}

.mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 25px;
    border-bottom: 1px solid rgba(59, 130, 246, 0.1);
    background: rgba(59, 130, 246, 0.05);
}

.mobile-nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-nav-logo img {
    width: 35px;
    height: 35px;
}

.mobile-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #3b82f6;
}

.mobile-nav-close {
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #3b82f6;
    font-size: 16px;
}

.mobile-nav-close:hover {
    background: rgba(59, 130, 246, 0.2);
    transform: scale(1.1);
}

.mobile-nav-menu {
    flex: 1;
    padding: 30px 0;
    overflow-y: auto;
}

.mobile-nav-section {
    margin-bottom: 30px;
}

.mobile-nav-section-title {
    font-size: 1rem;
    font-weight: 600;
    color: #666;
    padding: 0 25px 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid rgba(59, 130, 246, 0.1);
    margin-bottom: 20px;
}

.mobile-nav-section-title i {
    color: #3b82f6;
    font-size: 14px;
}

.mobile-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-nav-item {
    margin-bottom: 5px;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 25px;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
    border-left: 3px solid transparent;
}

.mobile-nav-link:hover {
    background: rgba(59, 130, 246, 0.08);
    border-left-color: rgba(59, 130, 246, 0.3);
    color: #3b82f6;
}

.mobile-nav-link.active {
    background: rgba(59, 130, 246, 0.1);
    border-left-color: #3b82f6;
    color: #3b82f6;
    font-weight: 600;
}

.mobile-nav-link i {
    width: 20px;
    font-size: 16px;
    color: #666;
    transition: color 0.3s ease;
}

.mobile-nav-link:hover i,
.mobile-nav-link.active i {
    color: #3b82f6;
}

.mobile-nav-footer {
    padding: 20px 25px;
    border-top: 1px solid rgba(59, 130, 246, 0.1);
    background: rgba(59, 130, 246, 0.02);
}

.mobile-nav-contact p {
    margin-bottom: 10px;
    color: #666;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.mobile-nav-contact p:last-child {
    margin-bottom: 0;
}

.mobile-nav-contact i {
    color: #3b82f6;
    width: 16px;
    font-size: 14px;
}

.mobile-nav-contact a {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
}

.mobile-nav-contact a:hover {
    text-decoration: underline;
}

/* 移动端显示面板，桌面端隐藏原菜单 */
@media (min-width: 769px) {
    .mobile-nav-panel {
        display: none;
    }
}