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


:root {
    --apple-gray: #1d1d1f;
    --apple-light-gray: #f5f5f7;
    --apple-medium-gray: #86868b;
    --apple-blue: #3366FF;
    --apple-blue-hover: #2952CC;
    --apple-text: #1d1d1f;
    --apple-text-secondary: #6e6e73;
    --apple-border: #d2d2d7;
}

html {
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Text", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--apple-text);
    background: #fff;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
    position: relative;
}

/* 导航栏 - Apple 风格 */
.navbar {
    background: rgba(255, 255, 255, 0.72) !important;
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding: 0;
    height: 48px;
    z-index: 9999;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.navbar .container {
    max-width: 980px;
    height: 48px;
}

.navbar-brand {
    color: var(--apple-text) !important;
    font-size: 21px;
    font-weight: 600;
    letter-spacing: -0.01em;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    height: 48px;
}

.navbar-brand i {
    color: var(--apple-text);
    margin-right: 6px;
    font-size: 20px;
}

.navbar-logo {
    height: 36px;
    width: auto;
    object-fit: contain;
    margin-right: 8px;
    border-radius: 8px;
}

.navbar-brand-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--apple-text);
    letter-spacing: -0.01em;
    white-space: nowrap;
}

.navbar-nav-desktop {
    display: flex;
    flex: 1;
    justify-content: flex-end;
}

.navbar-nav {
    height: 48px;
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    height: 48px;
    display: flex;
    align-items: center;
}

.nav-link {
    color: var(--apple-text) !important;
    font-size: 12px;
    font-weight: 400;
    padding: 0 12px !important;
    transition: opacity 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    opacity: 0.8;
    height: 48px;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.nav-link:hover {
    opacity: 1;
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 28px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 10001;
    position: relative;
}

.mobile-menu-toggle:focus {
    outline: none;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background-color: var(--apple-text);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    transform-origin: center;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scale(0);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* 移动端导航菜单 */
.mobile-nav-menu {
    position: fixed;
    top: 48px;
    left: 0;
    width: 100%;
    height: calc(100vh - 48px);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 10000;
    transform: translateX(-100%);
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.4s cubic-bezier(0.28, 0.11, 0.32, 1), visibility 0.4s;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.mobile-nav-menu.active {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
}

.mobile-nav-content {
    padding: 0;
    height: 100%;
}

.mobile-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
}

.mobile-nav-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    will-change: transform, opacity;
}

.mobile-nav-menu.active .mobile-nav-item {
    opacity: 1;
    transform: translateX(0);
}

.mobile-nav-menu.active .mobile-nav-item:nth-child(1) {
    transition-delay: 0.05s;
}

.mobile-nav-menu.active .mobile-nav-item:nth-child(2) {
    transition-delay: 0.1s;
}

.mobile-nav-menu.active .mobile-nav-item:nth-child(3) {
    transition-delay: 0.15s;
}

.mobile-nav-menu.active .mobile-nav-item:nth-child(4) {
    transition-delay: 0.2s;
}

.mobile-nav-menu.active .mobile-nav-item:nth-child(5) {
    transition-delay: 0.25s;
}

.mobile-nav-menu.active .mobile-nav-item:nth-child(6) {
    transition-delay: 0.3s;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    padding: 20px 30px;
    color: var(--apple-text);
    text-decoration: none;
    font-size: 19px;
    font-weight: 400;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    position: relative;
}

.mobile-nav-link i {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
    color: var(--apple-blue);
    font-size: 20px;
    transition: transform 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.mobile-nav-link span {
    flex: 1;
}

.mobile-nav-link:active {
    background: rgba(51, 102, 255, 0.08);
}

.mobile-nav-link:hover {
    background: rgba(51, 102, 255, 0.05);
}

.mobile-nav-link:hover i {
    transform: scale(1.1);
}

/* Hero 区域 - Apple 风格 */
.hero {
    min-height: 692px;
    background: linear-gradient(135deg, #ffffff 0%, #f5f5f7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 80px 20px 60px;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--apple-border);
    width: 100%;
    max-width: 100vw;
}

.hero-decoration {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 1;
    pointer-events: none;
    overflow: hidden;
}

/* 圆形装饰 */
.decoration-circle {
    position: absolute;
    border-radius: 50%;
}

.decoration-circle-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(51, 102, 255, 0.08) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    animation: float1 25s infinite ease-in-out;
}

.decoration-circle-2 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(51, 102, 255, 0.06) 0%, transparent 70%);
    bottom: 10%;
    right: 15%;
    animation: float2 20s infinite ease-in-out;
}

.decoration-circle-3 {
    width: 150px;
    height: 150px;
    border: 2px solid rgba(51, 102, 255, 0.15);
    background: transparent;
    top: 20%;
    left: 10%;
    animation: rotate 30s infinite linear;
}

/* 方形装饰 */
.decoration-square {
    position: absolute;
}

.decoration-square-1 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(51, 102, 255, 0.05) 0%, transparent 70%);
    bottom: -100px;
    left: -50px;
    transform: rotate(45deg);
    animation: float3 30s infinite ease-in-out;
}

.decoration-square-2 {
    width: 120px;
    height: 120px;
    border: 3px solid rgba(51, 102, 255, 0.12);
    background: transparent;
    top: 40%;
    right: 20%;
    transform: rotate(15deg);
    animation: rotate-reverse 25s infinite linear;
}

.decoration-square-3 {
    width: 80px;
    height: 80px;
    background: rgba(51, 102, 255, 0.08);
    bottom: 25%;
    left: 15%;
    transform: rotate(30deg);
    animation: pulse 4s infinite ease-in-out;
}

.decoration-dots {
    position: absolute;
    width: 200px;
    height: 200px;
    top: 50%;
    right: 8%;
    background-image: radial-gradient(circle, rgba(51, 102, 255, 0.15) 2px, transparent 2px);
    background-size: 20px 20px;
    animation: float1 20s infinite ease-in-out;
}

/* 动画效果 */
@keyframes float1 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, 30px); }
}

@keyframes float2 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-25px, 25px); }
}

@keyframes float3 {
    0%, 100% { transform: translate(0, 0) rotate(45deg); }
    50% { transform: translate(20px, -20px) rotate(50deg); }
}

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

@keyframes rotate-reverse {
    0% { transform: rotate(15deg); }
    100% { transform: rotate(-345deg); }
}

@keyframes pulse {
    0%, 100% { 
        transform: rotate(30deg) scale(1);
        opacity: 0.8;
    }
    50% { 
        transform: rotate(30deg) scale(1.2);
        opacity: 0.4;
    }
}

.hero .container {
    position: relative;
    z-index: 2;
    max-width: 980px;
}

.hero h1 {
    font-size: 56px;
    line-height: 1.07143;
    font-weight: 600;
    letter-spacing: -0.005em;
    color: var(--apple-text);
    margin-bottom: 12px;
}

.hero p {
    font-size: 28px;
    line-height: 1.14286;
    font-weight: 400;
    letter-spacing: 0.007em;
    color: var(--apple-text-secondary);
    margin-bottom: 24px;
}

.hero .btn-primary {
    background: var(--apple-blue);
    border: none;
    border-radius: 980px;
    padding: 12px 22px;
    font-size: 17px;
    line-height: 1.17648;
    font-weight: 400;
    color: #fff;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    margin-top: 12px;
}

.hero .btn-primary:hover {
    background: var(--apple-blue-hover);
    transform: scale(1.02);
}

/* Section 通用样式 */
section {
    padding: 80px 0;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
    position: relative;
}

section:nth-child(even) {
    background: var(--apple-light-gray);
}

.container {
    max-width: 980px;
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

/* 标题样式 - Apple 风格 */
.title-container {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 48px;
    line-height: 1.08349;
    font-weight: 600;
    letter-spacing: -0.003em;
    color: var(--apple-text);
    margin: 0;
}

.section-title i {
    display: none; /* Apple 风格不使用图标 */
}

/* 企业愿景 */
#vision {
    background: #fff;
    padding: 100px 0;
}

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

.vision-icon {
    display: none; /* 简化设计 */
}

.vision-title {
    font-size: 48px;
    line-height: 1.08349;
    font-weight: 600;
    letter-spacing: -0.003em;
    color: var(--apple-text);
    margin-bottom: 20px;
}

.vision-text {
    font-size: 28px;
    line-height: 1.14286;
    font-weight: 400;
    letter-spacing: 0.007em;
    color: var(--apple-text);
    margin-bottom: 16px;
}

.vision-description {
    font-size: 21px;
    line-height: 1.381;
    font-weight: 400;
    letter-spacing: 0.011em;
    color: var(--apple-text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

/* 服务卡片 - Apple 风格 */
#services {
    background: var(--apple-light-gray);
}

.service-card {
    background: #fff;
    border: none;
    border-radius: 18px;
    padding: 40px 30px;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    box-shadow: 2px 4px 12px rgba(0, 0, 0, 0.08);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 2px 8px 24px rgba(0, 0, 0, 0.15);
}

.service-card i {
    color: var(--apple-blue);
    font-size: 48px;
    margin-bottom: 20px;
}

.service-card h4 {
    font-size: 24px;
    line-height: 1.16667;
    font-weight: 600;
    letter-spacing: 0.009em;
    color: var(--apple-text);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--apple-text-secondary);
    margin: 0;
}

/* 解决方案 - Apple 风格 */
#solutions {
    background: #fff;
}

.solution-item {
    background: var(--apple-light-gray);
    border-radius: 18px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.solution-item:hover {
    transform: scale(1.02);
}

.solution-img-wrapper {
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
    background: #000;
}

.solution-img-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.5s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.solution-item:hover .solution-img-wrapper img {
    transform: scale(1.05);
    opacity: 0.9;
}

.solution-content {
    padding: 30px;
}

.solution-content h4 {
    font-size: 24px;
    line-height: 1.16667;
    font-weight: 600;
    letter-spacing: 0.009em;
    color: var(--apple-text);
    margin-bottom: 8px;
}

.solution-content p {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--apple-text-secondary);
    margin: 0;
}

/* 成功案例 - Apple 风格 */
#cases {
    background: var(--apple-light-gray);
}

.case-item {
    background: #fff;
    border-radius: 18px;
    padding: 40px 35px;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    height: 100%;
    box-shadow: 2px 4px 12px rgba(0, 0, 0, 0.08);
}

.case-item:hover {
    transform: translateY(-8px);
    box-shadow: 2px 8px 24px rgba(0, 0, 0, 0.15);
}

.case-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: var(--apple-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.case-icon i {
    color: #fff;
    font-size: 32px;
}

.case-item:hover .case-icon {
    transform: scale(1.1);
}

.case-content h4 {
    font-size: 24px;
    line-height: 1.16667;
    font-weight: 600;
    letter-spacing: 0.009em;
    color: var(--apple-text);
    margin-bottom: 8px;
}

.case-industry {
    font-size: 14px;
    line-height: 1.42859;
    font-weight: 400;
    letter-spacing: -0.016em;
    color: var(--apple-blue);
    text-transform: uppercase;
    margin-bottom: 16px;
}

.case-description {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--apple-text-secondary);
    margin-bottom: 20px;
}

.case-results {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.case-results .badge {
    background: var(--apple-light-gray);
    color: var(--apple-text);
    border-radius: 12px;
    padding: 6px 12px;
    font-size: 14px;
    font-weight: 400;
}

.case-results .badge.bg-primary {
    background: var(--apple-blue) !important;
    color: #fff;
}

.case-results .badge.bg-success {
    background: #34c759 !important;
    color: #fff;
}

/* 关于我们 */
#about {
    background: #fff;
}

.about-content {
    background: transparent;
    padding: 0;
    box-shadow: none;
}

.about-content .lead {
    font-size: 24px;
    line-height: 1.5;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--apple-text);
    margin-bottom: 24px;
}

.about-content p {
    font-size: 17px;
    line-height: 1.7;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--apple-text-secondary);
    margin-bottom: 32px;
}

.feature-item {
    background: var(--apple-light-gray);
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 10px;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    display: flex;
    align-items: center;
}

.feature-item:hover {
    transform: translateX(4px);
    background: #e8e8ed;
}

.feature-item i {
    color: var(--apple-blue);
    font-size: 18px;
    margin-right: 10px;
    flex-shrink: 0;
}

.feature-item span {
    font-size: 16px;
    font-weight: 400;
    color: var(--apple-text);
    line-height: 1.5;
}

.about-image {
    padding-left: 20px;
}

.about-image img {
    border-radius: 18px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    width: 100%;
    height: auto;
    object-fit: cover;
}

@media (max-width: 734px) {
    .about-image {
        padding-left: 0;
        margin-top: 30px;
    }
}

/* 企业文化 */
#culture {
    background: var(--apple-light-gray);
}

.culture-card {
    background: #fff;
    border-radius: 18px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    box-shadow: 2px 4px 12px rgba(0, 0, 0, 0.08);
}

.culture-card:hover {
    transform: translateY(-8px);
    box-shadow: 2px 8px 24px rgba(0, 0, 0, 0.15);
}

.culture-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    border-radius: 16px;
    background: var(--apple-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.culture-icon i {
    color: #fff;
    font-size: 32px;
}

.culture-card:hover .culture-icon {
    transform: scale(1.1);
}

.culture-card h4 {
    font-size: 24px;
    line-height: 1.16667;
    font-weight: 600;
    letter-spacing: 0.009em;
    color: var(--apple-text);
    margin-bottom: 12px;
}

.culture-card p {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--apple-text-secondary);
    margin: 0;
}

/* 联系我们 */
#contact {
    background: #fff;
}

.contact-list {
    margin-top: 40px;
}

.contact-list-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
    font-size: 19px;
    line-height: 1.6;
    color: var(--apple-text);
}

.contact-list-item i {
    font-size: 20px;
    color: var(--apple-text);
    margin-right: 15px;
    margin-top: 3px;
    flex-shrink: 0;
}

.contact-list-item span {
    color: var(--apple-text);
}

.contact-item-content {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}

.contact-map-link {
    color: var(--apple-blue) !important;
    text-decoration: none;
    font-size: 14px;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: opacity 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    padding: 4px 8px;
    border-radius: 6px;
    background: rgba(51, 102, 255, 0.08);
}

.contact-map-link:hover {
    opacity: 0.8;
    background: rgba(51, 102, 255, 0.12);
}

.contact-phone-link {
    color: var(--apple-blue) !important;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.contact-phone-link:hover {
    opacity: 0.8;
}

.contact-email-link {
    color: var(--apple-blue) !important;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    word-break: break-all;
}

.contact-email-link:hover {
    opacity: 0.8;
}

.contact-list-item a {
    color: var(--apple-text);
    text-decoration: none;
    transition: color 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.contact-list-item a[href^="tel:"] {
    color: var(--apple-blue);
    font-weight: 500;
}

.contact-list-item a:hover {
    color: var(--apple-blue);
}

.contact-qrcode {
    margin-top: 50px;
    text-align: left;
}

.contact-qrcode img {
    width: 200px;
    height: 200px;
    border-radius: 0;
    border: none;
}

.qrcode-tip {
    display: none;
    font-size: 14px;
    color: var(--apple-text-secondary);
    margin-top: 12px;
    text-align: center;
}

.contact-info {
    background: transparent;
    padding: 0;
    box-shadow: none;
}

.contact-info h4 {
    font-size: 32px;
    line-height: 1.125;
    font-weight: 600;
    letter-spacing: 0.004em;
    color: var(--apple-text);
    margin-bottom: 30px;
}

.contact-info h5 {
    font-size: 21px;
    line-height: 1.381;
    font-weight: 600;
    letter-spacing: 0.011em;
    color: var(--apple-text);
    margin-bottom: 8px;
}

.contact-info p {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--apple-text-secondary);
}

.contact-info i {
    color: var(--apple-blue);
}

.card {
    background: var(--apple-light-gray);
    border: none;
    border-radius: 18px;
    box-shadow: none;
}

.form-label {
    font-size: 17px;
    font-weight: 400;
    color: var(--apple-text);
    margin-bottom: 8px;
}

.form-control {
    border: 1px solid var(--apple-border);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 17px;
    background: #fff;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.form-control:focus {
    border-color: var(--apple-blue);
    box-shadow: 0 0 0 4px rgba(51, 102, 255, 0.1);
    outline: none;
}

.btn-primary {
    background: var(--apple-blue);
    border: none;
    border-radius: 980px;
    padding: 12px 22px;
    font-size: 17px;
    font-weight: 400;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.btn-primary:hover {
    background: var(--apple-blue-hover);
    transform: scale(1.02);
}

/* 页脚 */
footer {
    background: var(--apple-gray);
    color: #f5f5f7;
    padding: 40px 0 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

footer h5 {
    font-size: 14px;
    line-height: 1.42857;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: #f5f5f7;
    margin-bottom: 16px;
}

footer h5 i {
    color: var(--apple-blue);
    margin-right: 8px;
}

footer p {
    font-size: 12px;
    line-height: 1.66667;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: #a1a1a6;
}

footer a {
    color: #a1a1a6;
    text-decoration: none;
    transition: color 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

footer a:hover {
    color: #f5f5f7;
}

.footer-qrcode {
    max-width: 100px;
}

.footer-qrcode img {
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.qrcode-tip-footer {
    display: none;
    font-size: 12px;
    color: #a1a1a6;
    margin-top: 8px;
    text-align: center;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--apple-blue);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--apple-blue-hover);
    transform: scale(1.1);
}

/* 导航遮罩 */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.nav-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* 响应式设计 */
@media (max-width: 1068px) {
    .container {
        max-width: 692px;
    }
    
    .hero h1 {
        font-size: 48px;
    }
    
    .hero p {
        font-size: 24px;
    }
    
    .section-title {
        font-size: 40px;
    }
}

@media (max-width: 991px) {
    .navbar-nav-desktop {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
}

@media (max-width: 734px) {
    .navbar {
        height: 48px;
    }
    
    .navbar-logo {
        height: 32px;
    }
    
    .navbar-brand-text {
        font-size: 16px;
    }
    
    .mobile-nav-link {
        padding: 18px 24px;
        font-size: 17px;
    }
    
    .mobile-nav-link i {
        width: 22px;
        height: 22px;
        font-size: 18px;
        margin-right: 14px;
    }
    
    .hero {
        min-height: 500px;
        padding: 60px 20px 40px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 19px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .vision-title {
        font-size: 32px;
    }
    
    .vision-text {
        font-size: 21px;
    }
    
    .vision-description {
        font-size: 17px;
    }
    
    .service-card,
    .case-item,
    .culture-card {
        padding: 30px 25px;
    }
    
    /* 移动端解决方案卡片占满一行 */
    #solutions .col-lg-4,
    #solutions .col-md-6 {
        width: 100%;
        max-width: 100%;
        flex: 0 0 100%;
    }
    
    /* 关于我们移动端样式 */
    .about-content .lead {
        font-size: 20px;
        line-height: 1.5;
        margin-bottom: 20px;
    }
    
    .about-content p {
        font-size: 16px;
        line-height: 1.6;
        margin-bottom: 24px;
    }
    
    .feature-item {
        padding: 12px 14px;
        margin-bottom: 8px;
    }
    
    .feature-item i {
        font-size: 16px;
        margin-right: 8px;
    }
    
    .feature-item span {
        font-size: 15px;
    }
    
    .back-to-top {
        right: 20px;
        bottom: 20px;
        width: 40px;
        height: 40px;
    }
    
    /* 页脚移动端样式 */
    footer .row {
        text-align: center;
    }
    
    footer .col-md-6 {
        margin-bottom: 30px;
    }
    
    footer .col-md-6:last-child {
        margin-bottom: 0;
    }
    
    footer .text-md-end {
        text-align: center !important;
    }
    
    .footer-qrcode {
        margin: 0 auto;
    }
    
    /* 联系我们移动端样式 */
    .contact-list-item {
        flex-direction: row;
        align-items: flex-start;
        margin-bottom: 24px;
        font-size: 16px;
    }
    
    .contact-list-item i {
        font-size: 18px;
        margin-right: 12px;
        margin-top: 2px;
    }
    
    .contact-item-content {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .contact-item-content > span {
        color: var(--apple-text);
        word-break: break-all;
        line-height: 1.5;
    }
    
    .contact-map-link {
        font-size: 14px;
        padding: 0;
        background: transparent;
        color: var(--apple-blue) !important;
    }
    
    .contact-phone-link {
        padding: 0;
        background: transparent;
        font-size: 16px;
        color: var(--apple-blue) !important;
    }
    
    .contact-list-item a {
        font-size: 16px;
        word-break: break-all;
    }
    
    .contact-email-link {
        padding: 0;
        background: transparent;
        font-size: 16px;
        color: var(--apple-blue) !important;
    }
    
    .contact-qrcode {
        margin-top: 40px;
        text-align: center;
    }
    
    .contact-qrcode img {
        width: 160px;
        height: 160px;
    }
    
    .qrcode-tip {
        display: block;
    }
    
    .qrcode-tip-footer {
        display: block;
    }
}

/* 滚动条样式 - Apple 风格 */
::-webkit-scrollbar {
    width: 11px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    border: 2px solid transparent;
    background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
    background-clip: content-box;
}

/* 动画效果 */
.animate__animated {
    animation-duration: 0.8s;
    animation-fill-mode: both;
}

/* 移除不必要的装饰元素 */
.title-container::before,
.title-container::after,
.case-item::before,
.culture-card::before,
.culture-icon::after {
    display: none;
}

/* 微信二维码弹出层 */
.wechat-popup {
    display: none;
}