* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, 'Microsoft YaHei', sans-serif;
    background: #fff;
    color: #202124;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.5;
}

/* ========== 顶部Header ========== */
.site-header {
    background: #fff;
    border-bottom: 1px solid #e8eaed;
    padding: 0;
    height: 260px;
    position: relative;
    overflow: hidden;
    background-image: url('../images/header/header-bg-1.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    animation: headerBgSlide 9s infinite;
}

@keyframes headerBgSlide {
    0%, 33.33% {
        background-image: url('../images/header/header-bg-1.png');
    }
    33.34%, 66.66% {
        background-image: url('../images/header/header-bg-2.png');
    }
    66.67%, 100% {
        background-image: url('../images/header/header-bg-3.png');
    }
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    position: relative;
    z-index: 1;
}


.logo-section {
    display: flex;
    align-items: center;
}

.logo {
    width: auto;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
}

.logo-img {
    height: 100%;
    width: auto;
    object-fit: contain;
    display: block;
}

.company-name h1 {
    font-size: 32px;
    color: #fff;
    margin-bottom: 6px;
    font-weight: 600;
    letter-spacing: 3px;
    line-height: 1.3;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.company-english {
    font-size: 18px;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 1px;
    line-height: 1.4;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    font-weight: 600;
    margin-bottom: 8px;
}

.company-categories {
    font-size: 20px;
    color: #fff;
    margin-top: 0;
    line-height: 1.5;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    font-weight: 500;
}

.header-contact {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
}

.service-hotline {
    font-size: 20px;
    color: #fff;
    text-align: right;
    line-height: 1.6;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    font-weight: 600;
}

.service-hotline .contact-phone {
    margin-left: 4px;
    font-size: 22px;
    font-weight: 700;
}

.service-hotline-mobile {
    font-size: 20px;
    color: #fff;
    text-align: right;
    line-height: 1.6;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    font-weight: 600;
}

.service-hotline-mobile .contact-phone {
    font-size: 22px;
    font-weight: 700;
}

.contact-line {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    line-height: 1.4;
}

.phone-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    color: #5f6368;
    flex-shrink: 0;
    transition: transform 0.3s ease;
    cursor: pointer;
}

.contact-label {
    color: #fff;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.phone-icon svg {
    width: 100%;
    height: 100%;
    transition: transform 0.3s ease;
}

.phone-icon-desk {
    color: #4285f4;
}

.phone-icon-mobile {
    color: #34a853;
}

/* 打电话动画效果 */
.phone-icon:hover {
    animation: phoneRing 0.35s ease-in-out infinite;
}

.phone-icon:hover svg {
    transform: rotate(-15deg) scale(1.1);
}

@keyframes phoneRing {
    0%, 100% {
        transform: rotate(0deg) scale(1);
    }
    12.5%, 37.5% {
        transform: rotate(-25deg) scale(1.15);
    }
    25%, 50% {
        transform: rotate(25deg) scale(1.15);
    }
    62.5% {
        transform: rotate(0deg) scale(1.2);
    }
}

/* 点击时的动画效果 */
.phone-icon:active {
    transform: scale(0.95);
    animation: none;
}

.phone-icon:active svg {
    transform: rotate(-20deg) scale(1);
}

.contact-phone {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    -webkit-tap-highlight-color: rgba(26, 115, 232, 0.1);
    transition: opacity 0.2s ease;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.contact-phone:hover {
    text-decoration: underline;
}

.contact-phone:active {
    opacity: 0.8;
}

/* ========== 导航栏 ========== */
.main-nav {
    background: #0066cc;
    border-bottom: none;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.nav-menu {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
}

/* 移动端菜单切换按钮 */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 12px;
    z-index: 1001;
    position: relative;
    margin-right: auto;
}

.hamburger-icon {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    transition: transform 0.3s ease;
}

.hamburger-icon span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: #fff;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active .hamburger-icon span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active .hamburger-icon span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-icon span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.nav-item {
    flex: 0 1 auto;
    display: block;
    padding: 16px 24px;
    color: #fff;
    text-decoration: none;
    font-size: 18px;
    font-weight: 700;
    transition: background-color 0.15s ease;
    text-align: center;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-item.active {
    background-color: rgba(0, 0, 0, 0.3);
}

/* ========== 主体内容 ========== */
.main-content {
    flex: 1;
    padding: 80px 24px;
    background: #fff;
}

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

.content-container img {
    display: block;
    width: 100%;
    height: auto;
    max-width: 100%;
    object-fit: contain;
}

/* ========== 关于可成页面 ========== */
.about-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 0;
}

.about-page-title {
    font-size: 32px;
    font-weight: 400;
    color: #202124;
    text-align: center;
    margin-bottom: 32px;
    letter-spacing: 0;
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
}

.about-section {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 48px;
}

.about-section:last-child {
    margin-bottom: 0;
}

.about-text {
    flex: 1;
}

.about-text p {
    color: #5f6368;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 16px;
    text-align: justify;
    text-indent: 2em;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-image {
    width: 100%;
    margin-top: 8px;
}

.about-section-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    object-fit: cover;
}

/* ========== 标书制作页面 ========== */
.service-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 0;
}

/* ========== 标书代写页面布局 ========== */
.service-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 40px;
    align-items: flex-start;
}

/* 左侧目录 */
.service-sidebar {
    position: sticky;
    top: 100px;
}

.service-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    background: #f8f9fa;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.service-menu-item {
    border-bottom: 1px solid #e8eaed;
}

.service-menu-item:last-child {
    border-bottom: none;
}

.service-menu-item a {
    display: block;
    padding: 16px 20px;
    color: #202124;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
    word-wrap: break-word;
    line-height: 1.5;
}

/* 政策法规目录样式（长文字处理） */
.policy-sidebar {
    min-width: 280px;
}

.policy-sidebar .service-menu-item a {
    font-size: 15px;
    padding: 14px 18px;
    line-height: 1.6;
}

.service-menu-item a:hover {
    background: #e8eaed;
    color: #1a73e8;
}

.service-menu-item.active {
    background: #0066cc;
}

.service-menu-item.active a {
    color: #fff;
    font-weight: 600;
}

.service-menu-item.active a:hover {
    background: #0052a3;
    color: #fff;
}

/* 右侧内容 */
.service-content {
    min-height: 400px;
}

.service-content-item {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.service-content-item.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-content-title {
    font-size: 28px;
    font-weight: 600;
    color: #202124;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid #0066cc;
}

.service-content-body {
    color: #5f6368;
    font-size: 16px;
    line-height: 1.8;
}

/* 服务内容布局（左右分栏） */
.service-content-layout {
    display: block;
}

/* 左侧：图片轮播 */
.service-image-carousel {
    float: left;
    width: 48%;
    margin-right: 4%;
    margin-bottom: 20px;
}

.service-carousel-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.service-carousel-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.service-carousel-image.active {
    opacity: 1;
}

/* 右侧：文字说明 */
.service-content-layout::after {
    content: "";
    display: table;
    clear: both;
}

.service-text-content {
    color: #5f6368;
    font-size: 16px;
    line-height: 1.8;
}

.service-text-section {
    width: 100%;
}

.service-text-section p {
    margin-bottom: 16px;
    text-indent: 2em;
}

.service-text-section p:last-child {
    margin-bottom: 0;
}

.service-text-section ul {
    list-style: none;
    padding: 0;
    margin: 16px 0;
}

.service-text-section li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
}

.service-text-section li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #0066cc;
    font-weight: bold;
    font-size: 18px;
}

.service-page-title {
    font-size: 32px;
    font-weight: 400;
    color: #202124;
    text-align: center;
    margin-bottom: 32px;
    letter-spacing: 0;
}

.service-intro {
    max-width: 900px;
    margin: 0 auto 40px;
    padding: 0 20px;
    text-align: center;
}

.service-intro p {
    color: #5f6368;
    font-size: 16px;
    line-height: 1.8;
    margin: 0;
}

.service-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.gallery-item {
    width: 100%;
    background: #f8f9fa;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.gallery-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    aspect-ratio: 1 / 1;
    background: #fff;
}

/* ========== 专家抽取页面 ========== */
.expert-page-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    min-height: calc(100vh - 260px - 60px);
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #004d99 0%, #0066cc 50%, #0073e6 100%);
    position: relative;
    overflow: hidden;
}

/* 背景装饰SVG */
.expert-bg-decorations {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

/* 专家抽取页面背景遮罩 */
.expert-bg-decorations::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.25) 100%);
    z-index: 1;
    pointer-events: none;
}

.expert-bg-svg {
    width: 100%;
    height: 100%;
    opacity: 1;
}

.expert-map-outline,
.expert-user-icon-1 circle,
.expert-user-icon-1 path,
.expert-monitor-icon rect,
.expert-monitor-icon line,
.expert-monitor-icon path,
.expert-group-icon circle,
.expert-group-icon path {
    filter: drop-shadow(0 0 12px rgba(255, 255, 255, 0.5));
}

/* 动画效果 */
.expert-map-group,
.expert-user-icon-1,
.expert-monitor-icon,
.expert-group-icon {
    animation: expertFloat 12s ease-in-out infinite;
}

.expert-map-group {
    animation-delay: 0s;
}

.expert-user-icon-1 {
    animation-delay: 2s;
}

.expert-monitor-icon {
    animation-delay: 4s;
}

.expert-group-icon {
    animation-delay: 6s;
}

.expert-platform-1,
.expert-platform-2,
.expert-platform-3 {
    animation: expertPulse 8s ease-in-out infinite;
}

.expert-platform-1 {
    animation-delay: 0s;
}

.expert-platform-2 {
    animation-delay: 2.5s;
}

.expert-platform-3 {
    animation-delay: 5s;
}

.expert-glow-1,
.expert-glow-2,
.expert-glow-3 {
    animation: expertGlow 10s ease-in-out infinite;
}

.expert-glow-1 {
    animation-delay: 0s;
}

.expert-glow-2 {
    animation-delay: 3s;
}

.expert-glow-3 {
    animation-delay: 6s;
}

@keyframes expertFloat {
    0%, 100% {
        transform: translateY(0px) translateX(0px);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-20px) translateX(10px);
        opacity: 1;
    }
}

@keyframes expertPulse {
    0%, 100% {
        opacity: 0.8;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

@keyframes expertGlow {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.1);
    }
}

/* 左侧结果显示面板 */
.expert-left-panel {
    padding: 40px;
    overflow-y: auto;
    max-height: calc(100vh - 260px - 60px);
    position: relative;
    z-index: 1;
    background: transparent;
}

.expert-control-panel {
    position: sticky;
    top: 40px;
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.expert-panel-title {
    font-size: 28px;
    font-weight: 600;
    color: #202124;
    margin-bottom: 40px;
    text-align: center;
}

.expert-input-group {
    margin-bottom: 30px;
}

.expert-input-group label {
    display: block;
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 12px;
}

.expert-input {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    border: 2px solid #e8eaed;
    border-radius: 8px;
    transition: border-color 0.3s ease;
    font-family: inherit;
    box-sizing: border-box;
}

.expert-input:focus {
    outline: none;
    border-color: #0066cc;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.expert-input-hint {
    display: block;
    font-size: 12px;
    color: #999;
    margin-top: 8px;
}

.expert-btn-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.expert-extract-btn,
.expert-clear-btn {
    padding: 14px 24px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    width: 100%;
}

.expert-extract-btn {
    background: #0066cc;
    color: #fff;
}

.expert-extract-btn:hover {
    background: #0052a3;
}

.expert-extract-btn:active {
    background: #003d7a;
}

.expert-clear-btn {
    background: #f5f5f5;
    color: #333;
    border: 2px solid #e8eaed;
}

.expert-clear-btn:hover {
    background: #e8eaed;
}

.expert-clear-btn:active {
    background: #dadce0;
}

/* 右侧操作面板 */
.expert-right-panel {
    background: transparent;
    padding: 40px 30px;
    position: relative;
    z-index: 1;
}

.expert-result-container {
    width: 100%;
}

.expert-result {
    display: none;
}

.expert-list-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e8eaed;
}

.expert-list-header h3 {
    font-size: 24px;
    font-weight: 600;
    color: #202124;
    margin: 0;
}

.expert-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.expert-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    padding: 24px;
    transition: box-shadow 0.3s ease;
    backdrop-filter: blur(5px);
}

.expert-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.expert-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e8eaed;
}

.expert-number {
    font-size: 18px;
    font-weight: 600;
    color: #202124;
}

.expert-code {
    font-size: 14px;
    font-weight: 600;
    color: #0066cc;
    background: #e3f2fd;
    padding: 6px 12px;
    border-radius: 4px;
}

.expert-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.expert-detail-item {
    display: flex;
    align-items: center;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 6px;
}

.expert-label {
    font-size: 14px;
    font-weight: 600;
    color: #666;
    min-width: 90px;
    margin-right: 10px;
}

.expert-value {
    font-size: 15px;
    color: #202124;
    font-weight: 500;
}

.expert-empty {
    text-align: center;
    color: #999;
    font-size: 16px;
    padding: 60px 20px;
}

@media (max-width: 1024px) {
    .expert-page-layout {
        grid-template-columns: 1fr;
    }
    
    .expert-left-panel {
        padding: 30px 20px;
    }
    
    .expert-right-panel {
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
        padding: 30px 20px;
    }
    
    .expert-control-panel {
        position: static;
    }
}

@media (max-width: 768px) {
    .expert-details {
        grid-template-columns: 1fr;
    }
    
    .expert-card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* ========== 系统登录页面 ========== */
.admin-login-page-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    min-height: calc(100vh - 260px - 60px);
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #004d99 0%, #0066cc 50%, #0073e6 100%);
    position: relative;
    overflow: hidden;
}

/* 背景装饰SVG */
.admin-login-bg-decorations {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

/* 系统登录页面背景遮罩 */
.admin-login-bg-decorations::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.25) 100%);
    z-index: 1;
    pointer-events: none;
}

.admin-login-bg-svg {
    width: 100%;
    height: 100%;
    opacity: 1;
}

/* 动画效果 */
.admin-map-group,
.admin-user-icon-1,
.admin-monitor-icon,
.admin-group-icon {
    animation: adminFloat 12s ease-in-out infinite;
}

.admin-map-group {
    animation-delay: 0s;
}

.admin-user-icon-1 {
    animation-delay: 2s;
}

.admin-monitor-icon {
    animation-delay: 4s;
}

.admin-group-icon {
    animation-delay: 6s;
}

.admin-platform-1,
.admin-platform-2,
.admin-platform-3 {
    animation: adminPulse 8s ease-in-out infinite;
}

.admin-platform-1 {
    animation-delay: 0s;
}

.admin-platform-2 {
    animation-delay: 2.5s;
}

.admin-platform-3 {
    animation-delay: 5s;
}

.admin-glow-1,
.admin-glow-2,
.admin-glow-3 {
    animation: adminGlow 10s ease-in-out infinite;
}

.admin-glow-1 {
    animation-delay: 0s;
}

.admin-glow-2 {
    animation-delay: 3s;
}

.admin-glow-3 {
    animation-delay: 6s;
}

@keyframes adminFloat {
    0%, 100% {
        transform: translateY(0px) translateX(0px);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-20px) translateX(10px);
        opacity: 1;
    }
}

@keyframes adminPulse {
    0%, 100% {
        opacity: 0.8;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

@keyframes adminGlow {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.1);
    }
}

.admin-map-outline,
.admin-user-icon-1 circle,
.admin-user-icon-1 path,
.admin-monitor-icon rect,
.admin-monitor-icon line,
.admin-monitor-icon path,
.admin-group-icon circle,
.admin-group-icon path {
    filter: drop-shadow(0 0 12px rgba(255, 255, 255, 0.5));
}

/* 左侧登录表单面板 */
.admin-login-left-panel {
    padding: 40px;
    background: transparent;
    position: relative;
    z-index: 1;
}

.admin-login-right-panel {
    background: transparent;
    padding: 40px 30px;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.admin-login-container {
    position: sticky;
    top: 40px;
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    width: 100%;
    max-width: 100%;
}

.admin-login-title {
    font-size: 24px;
    font-weight: 600;
    color: #202124;
    text-align: center;
    margin-bottom: 8px;
}

.admin-login-subtitle {
    font-size: 16px;
    font-weight: 400;
    color: #666;
    text-align: center;
    margin-bottom: 24px;
}

.admin-login-form {
    display: flex;
    flex-direction: column;
}

.admin-login-form-group {
    margin-bottom: 20px;
}

.admin-login-form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.admin-login-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 16px;
    border: 2px solid #e8eaed;
    border-radius: 8px;
    transition: border-color 0.3s ease;
    font-family: inherit;
    box-sizing: border-box;
}

.admin-login-input:focus {
    outline: none;
    border-color: #0066cc;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.admin-captcha-group {
    display: flex;
    gap: 12px;
    align-items: center;
}

.admin-captcha-input {
    flex: 1;
}

.admin-captcha-image {
    cursor: pointer;
    border: 2px solid #e8eaed;
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.admin-captcha-image:hover {
    border-color: #0066cc;
}

.admin-captcha-image canvas {
    display: block;
}

.admin-login-btn {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    background: #0066cc;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s ease;
    font-family: inherit;
}

.admin-login-btn:hover {
    background: #0052a3;
}

.admin-login-btn:active {
    background: #003d7a;
}

.admin-login-error {
    margin-top: 16px;
    padding: 12px;
    background: #ffebee;
    color: #c62828;
    border-radius: 8px;
    font-size: 14px;
    text-align: center;
    border-left: 4px solid #c62828;
}

/* 右侧空白面板 */

@media (max-width: 1024px) {
    .admin-login-page-layout {
        grid-template-columns: 1fr;
    }
    
    .admin-login-left-panel {
        display: none;
    }
    
    .admin-login-right-panel {
        padding: 30px 20px;
    }
    
    .admin-login-container {
        position: static;
    }
}

/* ========== 联系我们页面 ========== */

.contact-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 0;
}

.contact-page-title {
    font-size: 32px;
    font-weight: 400;
    color: #202124;
    text-align: center;
    margin-bottom: 40px;
    letter-spacing: 0;
}

.contact-page-info {
    display: grid;
    gap: 24px;
}

.contact-page-item {
    display: flex;
    align-items: flex-start;
    padding: 24px;
    background: #f8f9fa;
    border-radius: 8px;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-page-item:hover {
    background: #f1f3f4;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.contact-page-icon {
    font-size: 28px;
    margin-right: 20px;
    min-width: 32px;
    text-align: center;
    flex-shrink: 0;
}

.contact-page-details {
    flex: 1;
}

.contact-page-details h3 {
    color: #202124;
    font-size: 16px;
    margin-bottom: 8px;
    font-weight: 500;
}

.contact-page-details p {
    color: #5f6368;
    font-size: 15px;
    margin: 0;
    line-height: 1.6;
}

.contact-page-details a {
    color: #1a73e8;
    text-decoration: none;
    transition: text-decoration 0.2s ease;
}

.contact-page-details a:hover {
    text-decoration: underline;
}

/* ========== 首页轮播图片 ========== */
.home-carousel {
    width: 100%;
    margin-bottom: 0;
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.carousel-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.carousel-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    cursor: pointer;
}

.carousel-image:hover {
    opacity: 0.8;
}

.carousel-image.active {
    opacity: 1;
}

/* ========== 首页布局 ========== */
.home-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    align-items: stretch;
    grid-auto-rows: 1fr;
}

.home-left-panel {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    height: 100%;
}

.home-left-panel .home-carousel {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.bidding-card {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 40px 32px;
    border-radius: 8px;
    width: 100%;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.bidding-title {
    color: #ffa500;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 32px;
    text-align: center;
    letter-spacing: 1px;
}

.bidding-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.bidding-features li {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    color: #fff;
    font-size: 16px;
    line-height: 1.6;
}

.feature-icon {
    color: #ffa500;
    font-size: 20px;
    margin-right: 12px;
    font-weight: bold;
}

.home-right-panel {
    display: flex;
    flex-direction: column;
    position: relative;
    height: 100%;
}

/* 首页Tab菜单样式 - 固定在顶部 */
.home-tab-menu {
    display: flex !important;
    gap: 0;
    margin-bottom: 24px;
    background: transparent;
    border-bottom: 2px solid #e8eaed;
    visibility: visible !important;
    opacity: 1 !important;
    position: relative;
    z-index: 10;
    flex-shrink: 0;
}

.home-tab-content {
    display: none;
    flex: 1;
    min-height: 0;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.home-tab-content.active {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.home-tab-content.active:hover {
    background-color: rgba(0, 102, 204, 0.02);
}

.home-tab-menu .home-tab-btn {
    background: transparent;
    border: none;
    padding: 16px 24px;
    font-size: 18px;
    font-weight: 700;
    color: #0066cc;
    cursor: pointer;
    position: relative;
    transition: color 0.3s ease;
    font-family: inherit;
    flex: 0 1 auto;
    text-align: center;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.home-tab-menu .home-tab-btn:hover {
    color: #0052a3;
}

.home-tab-menu .home-tab-btn.active {
    color: #003d7a;
}

.home-tab-menu .home-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: #003d7a;
}

/* Tab内容区域 */
.home-tab-content {
    display: none;
}

.home-tab-content.active {
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
}

.home-detail-link-top {
    color: #0066cc;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: color 0.3s ease;
    flex-shrink: 0;
    margin: 0 0 16px 0;
    padding: 0;
    text-align: right;
}

.home-detail-link-top:hover {
    color: #0052a3;
    text-decoration: underline;
}

.home-detail-link {
    color: #0066cc;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: color 0.3s ease;
    flex-shrink: 0;
    margin: 0;
    padding: 0;
}

.home-detail-link:hover {
    color: #0052a3;
    text-decoration: underline;
}

.home-tab-intro {
    color: #5f6368;
    font-size: 13px;
    line-height: 1.6;
    margin-bottom: 12px;
    flex-shrink: 0;
    text-indent: 2em;
}

.home-content-features {
    background: #f8f9fa;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 0;
    border-left: 4px solid #0066cc;
    flex-shrink: 0;
}

.home-content-features p {
    color: #333;
    font-size: 12px;
    line-height: 1.5;
    margin-bottom: 6px;
}

.home-content-features p:last-child {
    margin-bottom: 0;
}

.home-content-features strong {
    color: #0066cc;
    font-weight: 600;
}


.agency-title {
    color: #202124;
    font-size: 32px;
    font-weight: 500;
    margin-bottom: 16px;
    letter-spacing: 0;
}

.agency-intro {
    color: #5f6368;
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 32px;
}

.service-categories {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.category-card {
    background: #fff;
    border: 1px solid #e8eaed;
    border-radius: 8px;
    padding: 24px 20px;
    text-align: center;
    transition: box-shadow 0.3s ease, transform 0.2s ease;
}

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

.category-card h3 {
    color: #1a73e8;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.category-card p {
    color: #5f6368;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

.business-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
    max-width: 1000px;
    margin: 0 auto;
}

.business-card {
    background: #fff;
    padding: 48px 40px;
    text-align: center;
    border-radius: 8px;
    transition: box-shadow 0.2s ease;
    cursor: default;
}

.business-card:hover {
    box-shadow: 0 1px 6px rgba(32,33,36,0.28);
}

.card-icon {
    font-size: 64px;
    margin-bottom: 24px;
    line-height: 1;
}

.business-card h2 {
    color: #202124;
    margin-bottom: 16px;
    font-size: 24px;
    font-weight: 400;
    letter-spacing: 0;
}

.business-card p {
    color: #5f6368;
    margin-bottom: 32px;
    line-height: 1.6;
    font-size: 14px;
}

.highlight-zhongbiao {
    font-weight: 700;
    font-size: 3em;
    display: inline-flex;
    margin: 0 2px;
    color: #ea4335;
    gap: 4px;
}

.animate-letters {
    display: inline-flex;
    gap: 4px;
    color: #ea4335;
    font-weight: 600;
    font-size: 3em;
}

.highlight-zhongbiao .letter,
.animate-letters .letter {
    display: inline-block;
    animation: letterBounce 1.6s ease-in-out infinite;
}

.highlight-zhongbiao .letter:nth-child(2),
.animate-letters .letter:nth-child(2) {
    animation-delay: 0.2s;
}

.highlight-zhongbiao .letter:nth-child(3),
.animate-letters .letter:nth-child(3) {
    animation-delay: 0.4s;
}

.highlight-zhongbiao .letter:nth-child(4),
.animate-letters .letter:nth-child(4) {
    animation-delay: 0.6s;
}

.animate-letters .letter:nth-child(5) {
    animation-delay: 0.8s;
}

.animate-letters .letter:nth-child(6) {
    animation-delay: 1s;
}

@keyframes letterBounce {
    0%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-8px);
    }
    60% {
        transform: translateY(0);
    }
}

@keyframes charScale {
    0%, 100% {
        transform: scale(1);
    }
    25% {
        transform: scale(1.4);
    }
    50% {
        transform: scale(1);
    }
}

.service-list {
    list-style: none;
    text-align: left;
    margin: 32px 0;
    padding: 0;
}

.service-list li {
    padding: 8px 0;
    color: #202124;
    font-size: 14px;
    line-height: 1.8;
}

/* ========== 服务优势 ========== */
.service-advantages {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid #e8eaed;
}

.advantages-title {
    color: #202124;
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 24px;
    text-align: center;
}

.advantages-list {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.advantages-list li {
    display: flex;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px dashed #dadce0;
}

.advantages-list li:last-child {
    border-bottom: none;
}

.advantage-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: #ea4335;
    color: #fff;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 600;
    margin-right: 16px;
    flex-shrink: 0;
}

.advantage-text {
    color: #202124;
    font-size: 15px;
    line-height: 1.6;
    flex: 1;
}

/* ========== 服务流程 ========== */
.service-process {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid #e8eaed;
}

.process-title {
    color: #202124;
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 24px;
    text-align: center;
}

.process-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
    padding-left: 24px;
}

.process-steps::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #1a73e8;
    border-radius: 1px;
}

.process-step {
    display: flex;
    align-items: center;
    position: relative;
    padding-left: 40px;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: #1a73e8;
    color: #fff;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 600;
    position: absolute;
    left: 0;
    flex-shrink: 0;
    z-index: 1;
}

.step-text {
    color: #202124;
    font-size: 15px;
    line-height: 1.6;
}

/* ========== 服务图片展示 ========== */
.service-images {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid #e8eaed;
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    justify-items: center;
}

.service-image {
    width: 100%;
    height: auto;
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    object-fit: contain;
    display: block;
}

.service-image:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* ========== 服务操作按钮 ========== */
.service-action {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid #e8eaed;
    text-align: center;
}

.service-detail-btn {
    display: inline-block;
    padding: 16px 40px;
    background: #1a73e8;
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-size: 20px;
    font-weight: 500;
    transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
    box-shadow: 0 2px 6px rgba(26, 115, 232, 0.25);
    cursor: pointer;
}

.service-detail-btn:hover {
    background: #1557b0;
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.35);
    transform: translateY(-2px);
}

.service-detail-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(26, 115, 232, 0.25);
}

.btn-primary {
    background: #1a73e8;
    color: #fff;
    border: none;
    padding: 10px 24px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
    margin-top: 8px;
    letter-spacing: 0;
}

.btn-primary:hover {
    background: #1557b0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12);
}

.btn-primary:active {
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

/* ========== 页面底部 ========== */
.site-footer {
    background: #fff;
    border-top: 1px solid #e8eaed;
    padding: 24px;
    margin-top: auto;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-copyright {
    color: #5f6368;
    font-size: 13px;
    margin: 0;
    line-height: 1.6;
}

.footer-links {
    color: #5f6368;
    font-size: 13px;
    margin: 0;
    line-height: 1.6;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.footer-links a {
    color: #1a73e8;
    text-decoration: none;
    transition: text-decoration 0.2s ease;
}

.footer-links a:hover {
    text-decoration: underline;
}

.link-separator {
    color: #dadce0;
    margin: 0 2px;
}

.footer-record {
    color: #5f6368;
    font-size: 13px;
    margin: 0;
    line-height: 1.6;
}

/* ========== 聊天窗口样式 ========== */
.chat-window {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 380px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px 1px rgba(64,60,67,.16);
    z-index: 1000;
    border: 1px solid #dadce0;
    overflow: hidden;
}

.chat-header {
    background: #1a73e8;
    color: #fff;
    padding: 16px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    font-weight: 500;
}

.chat-body {
    display: flex;
    flex-direction: column;
    height: 500px;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    background: #f8f9fa;
}

.message {
    margin-bottom: 16px;
    padding: 12px 16px;
    border-radius: 18px;
    max-width: 80%;
    word-wrap: break-word;
    font-size: 14px;
    line-height: 1.4;
}

.message-left {
    background: #e8f0fe;
    color: #202124;
    margin-right: auto;
    border-bottom-left-radius: 4px;
}

.message-right {
    background: #1a73e8;
    color: #fff;
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

.message-sender {
    font-size: 11px;
    margin-bottom: 4px;
    opacity: 0.7;
    font-weight: 500;
}

.message-content {
    font-size: 14px;
    line-height: 1.5;
}

.message-time {
    font-size: 11px;
    margin-top: 4px;
    opacity: 0.6;
}

.chat-input-area {
    display: flex;
    padding: 12px;
    border-top: 1px solid #dadce0;
    gap: 8px;
    background: #fff;
}

.chat-input-area input {
    flex: 1;
    padding: 10px 16px;
    border: 1px solid #dadce0;
    border-radius: 24px;
    font-size: 14px;
    outline: none;
    transition: box-shadow 0.1s ease;
}

.chat-input-area input:focus {
    border-color: #1a73e8;
    box-shadow: 0 0 0 2px rgba(26,115,232,0.2);
}

.chat-input-area button {
    padding: 10px 20px;
    background: #1a73e8;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.2s ease;
}

.chat-input-area button:hover {
    background: #1557b0;
}

/* ========== 模态框样式 ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(32,33,36,0.6);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: #fff;
    padding: 32px;
    border-radius: 8px;
    max-width: 520px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 4px 16px rgba(32,33,36,0.28);
}

.modal-content .close {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 24px;
    font-weight: 400;
    cursor: pointer;
    color: #5f6368;
    line-height: 1;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s ease;
}

.modal-content .close:hover {
    background: #f1f3f4;
    color: #202124;
}

.modal-content h2 {
    color: #202124;
    margin-bottom: 24px;
    font-size: 22px;
    font-weight: 400;
    letter-spacing: 0;
}

.contact-info {
    margin: 24px 0;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    padding: 16px;
    background: #f8f9fa;
    border-radius: 8px;
    transition: background-color 0.2s ease;
}

.contact-item:hover {
    background: #f1f3f4;
}

.contact-icon {
    font-size: 20px;
    margin-right: 16px;
    min-width: 24px;
    text-align: center;
}

.contact-details {
    flex: 1;
}

.contact-details h3 {
    color: #202124;
    font-size: 14px;
    margin-bottom: 4px;
    font-weight: 500;
}

.contact-details p {
    color: #5f6368;
    font-size: 14px;
    margin: 0;
    line-height: 1.6;
}

.contact-details a {
    color: #1a73e8;
    text-decoration: none;
    transition: text-decoration 0.2s ease;
}

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

.contact-actions {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid #e8eaed;
}

.contact-actions .btn-primary {
    width: 100%;
    margin-top: 0;
}

/* ========== 响应式设计 ========== */

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .header-container {
        padding: 0 16px;
    }

    .business-section {
        gap: 32px;
        max-width: 900px;
    }

    .business-card {
        padding: 40px 32px;
    }

    .main-content {
        padding: 60px 24px;
    }
}

/* 手机设备 (最大768px) */
@media (max-width: 768px) {
    body {
        font-size: 16px;
        -webkit-text-size-adjust: 100%;
    }

    /* 登录页面响应式 */


    .site-header {
        padding: 0;
        height: auto;
        min-height: 200px;
    }

    .header-container {
        padding: 12px 16px;
        flex-direction: column;
        gap: 12px;
        text-align: center;
        align-items: center;
    }

    .logo-section {
        flex-direction: column;
        text-align: center;
        align-items: center;
        width: 100%;
    }

    .company-name h1 {
        font-size: 24px;
        letter-spacing: 2px;
        margin-bottom: 4px;
    }

    .company-english {
        font-size: 16px;
    }

    .company-categories {
        font-size: 16px;
    }

    .header-contact {
        align-items: center;
        width: 100%;
    }

    .header-contact {
        align-items: center;
    }

    .service-hotline {
        text-align: center;
        font-size: 18px;
    }

    .service-hotline .contact-phone {
        font-size: 20px;
    }

    .service-hotline-mobile {
        text-align: center;
        font-size: 18px;
    }

    .service-hotline-mobile .contact-phone {
        font-size: 20px;
    }

    .contact-line {
        font-size: 13px;
        justify-content: center;
    }

    .main-nav {
        border-top: 1px solid #e8eaed;
        position: sticky;
        top: 0;
        z-index: 1000;
    }

    .nav-container {
        padding: 0 16px;
        justify-content: flex-start;
        position: relative;
    }
    
    /* 移动端菜单切换按钮 */
    .mobile-menu-toggle {
        display: block;
    }
    
    /* 移动端导航菜单 */
    .nav-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        max-width: 85vw;
        height: 100vh;
        background: #0066cc;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: 80px 0 20px 0;
        transition: left 0.3s ease;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    /* 移动端菜单遮罩 */
    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        transition: opacity 0.3s ease;
        pointer-events: none;
    }
    
    .mobile-menu-overlay.active {
        opacity: 1;
        pointer-events: all;
    }

    .nav-item {
        display: block;
        padding: 16px 24px;
        font-size: 17px;
        text-align: left;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        white-space: normal;
        min-width: auto;
        width: 100%;
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    .main-content {
        padding: 40px 16px;
    }

    .content-container {
        max-width: 100%;
    }

    .about-page-title,
    .service-page-title {
        font-size: 24px;
        margin-bottom: 24px;
    }

    .service-layout {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .service-sidebar {
        position: relative;
        top: 0;
    }

    .service-menu {
        display: flex;
        overflow-x: auto;
        border-radius: 8px;
    }

    .service-menu-item {
        border-bottom: none;
        border-right: 1px solid #e8eaed;
        flex-shrink: 0;
    }

    .service-menu-item:last-child {
        border-right: none;
    }

    .service-menu-item a {
        padding: 12px 16px;
        font-size: 15px;
        white-space: nowrap;
    }

    .policy-sidebar {
        min-width: auto;
    }

    .policy-sidebar .service-menu-item a {
        font-size: 14px;
        padding: 12px 16px;
        white-space: normal;
        line-height: 1.5;
    }

    .service-content-title {
        font-size: 24px;
        margin-bottom: 20px;
    }

    .service-content-body {
        font-size: 15px;
    }

    .service-content-layout {
        display: block;
    }

    .service-image-carousel {
        float: none;
        width: 100%;
        margin-right: 0;
        margin-bottom: 24px;
    }

    .service-carousel-container {
        max-width: 100%;
    }

    .service-text-content {
        overflow: visible;
    }

    .service-text-content {
        font-size: 15px;
    }

    .about-section {
        margin-bottom: 32px;
        padding: 0 16px;
    }

    .about-text p {
        font-size: 15px;
        margin-bottom: 14px;
    }

    .about-image {
        margin-top: 16px;
    }

    .about-gallery,
    .service-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        margin-top: 24px;
    }

    .gallery-item {
        border-radius: 8px;
    }

    .home-carousel {
        margin-bottom: 0;
    }

    .carousel-container {
        aspect-ratio: 16 / 9;
    }

    .home-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .bidding-card {
        padding: 32px 24px;
    }

    .bidding-title {
        font-size: 24px;
        margin-bottom: 24px;
    }

    .bidding-features li {
        font-size: 15px;
        margin-bottom: 16px;
    }

    .home-tab-menu {
        margin-bottom: 20px;
    }

    .home-tab-btn {
        padding: 12px 16px;
        font-size: 16px;
        min-width: 80px;
    }

    .home-tab-title {
        font-size: 24px;
    }

    .home-tab-intro {
        font-size: 14px;
        margin-bottom: 20px;
    }

    .home-content-features {
        padding: 16px;
        margin-bottom: 20px;
    }

    .home-content-features p {
        font-size: 13px;
    }

    .home-more-btn {
        padding: 10px 24px;
        font-size: 15px;
    }

    .agency-title {
        font-size: 26px;
    }

    .agency-intro {
        font-size: 14px;
        margin-bottom: 24px;
    }

    .service-categories {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .category-card {
        padding: 20px 16px;
    }

    .category-card h3 {
        font-size: 18px;
    }

    .category-card p {
        font-size: 13px;
    }

    .business-section {
        grid-template-columns: 1fr;
        gap: 24px;
        max-width: 100%;
    }

    .business-card {
        padding: 32px 24px;
        border-radius: 8px;
    }

    .card-icon {
        font-size: 56px;
        margin-bottom: 20px;
    }

    .business-card h2 {
        font-size: 20px;
        margin-bottom: 12px;
    }

    .business-card p {
        font-size: 14px;
        margin-bottom: 24px;
    }

    .service-list {
        margin: 20px 0;
    }

    .service-list li {
        font-size: 14px;
        padding: 6px 0;
    }

    .service-advantages,
    .service-process {
        margin-top: 32px;
        padding-top: 24px;
    }

    .advantages-title,
    .process-title {
        font-size: 18px;
        margin-bottom: 20px;
    }

    .advantage-number,
    .step-number {
        width: 28px;
        height: 28px;
        font-size: 12px;
        margin-right: 12px;
    }

    .advantage-text,
    .step-text {
        font-size: 14px;
    }

    .process-steps {
        padding-left: 20px;
        gap: 12px;
    }

    .process-steps::before {
        left: 13px;
    }

    .process-step {
        padding-left: 36px;
    }

    .service-images {
        margin-top: 32px;
        padding-top: 24px;
        gap: 12px;
        justify-items: center;
    }

    .service-image {
        max-width: 340px;
        width: 100%;
        margin: 0 auto;
        object-fit: contain;
    }

    .service-action {
        margin-top: 24px;
        padding-top: 20px;
    }

    .service-detail-btn {
        padding: 18px 44px;
        font-size: 22px;
        width: 100%;
        max-width: 320px;
        min-height: 56px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto;
        -webkit-tap-highlight-color: rgba(26, 115, 232, 0.2);
    }

    .btn-primary {
        padding: 12px 28px;
        font-size: 15px;
        width: 100%;
        max-width: 200px;
        margin-top: 12px;
    }

    .site-footer {
        padding: 20px 16px;
    }

    .footer-container {
        gap: 6px;
    }

    .footer-copyright,
    .footer-links,
    .footer-record {
        font-size: 12px;
        text-align: left;
    }

    .footer-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .link-separator {
        display: none;
    }

    .footer-links a {
        display: block;
        margin: 2px 0;
    }
    
    .chat-window {
        width: 100%;
        right: 0;
        left: 0;
        bottom: 0;
        border-radius: 0;
        border-left: none;
        border-right: none;
        border-bottom: none;
        max-height: 70vh;
    }

    .chat-header {
        padding: 14px 16px;
        font-size: 15px;
        -webkit-tap-highlight-color: transparent;
    }

    .chat-body {
        height: calc(70vh - 50px);
        max-height: 500px;
    }

    .chat-messages {
        padding: 12px;
    }

    .message {
        font-size: 14px;
        padding: 10px 14px;
        max-width: 85%;
        margin-bottom: 12px;
    }

    .chat-input-area {
        padding: 10px 12px;
    }

    .chat-input-area input {
        padding: 12px 16px;
        font-size: 16px; /* 防止iOS自动缩放 */
        border-radius: 24px;
    }

    .chat-input-area button {
        padding: 12px 20px;
        font-size: 15px;
        min-width: 60px;
    }

    .modal {
        padding: 16px;
        align-items: flex-end;
    }

    .modal-content {
        width: 100%;
        max-width: 100%;
        max-height: 85vh;
        padding: 24px 20px;
        border-radius: 16px 16px 0 0;
        margin: 0;
    }

    .modal-content .close {
        top: 12px;
        right: 12px;
        width: 36px;
        height: 36px;
        font-size: 28px;
    }

    .modal-content h2 {
        font-size: 20px;
        margin-bottom: 20px;
    }

    .contact-info {
        margin: 20px 0;
    }

    .contact-item {
        padding: 14px;
        margin-bottom: 12px;
    }

    .contact-icon {
        font-size: 20px;
        margin-right: 12px;
    }

    .contact-details h3 {
        font-size: 14px;
    }

    .contact-details p {
        font-size: 14px;
    }

    .contact-actions {
        margin-top: 20px;
        padding-top: 20px;
    }

    .contact-actions .btn-primary {
        width: 100%;
        max-width: 100%;
    }
}

/* 小屏手机 (最大480px) */
@media (max-width: 480px) {
    .site-header {
        padding: 10px 12px;
    }

    .company-name h1 {
        font-size: 20px;
        letter-spacing: 1.5px;
        margin-bottom: 4px;
    }

    .company-english {
        font-size: 14px;
    }

    .company-categories {
        font-size: 14px;
    }

    .service-hotline {
        font-size: 16px;
    }

    .service-hotline .contact-phone {
        font-size: 18px;
    }

    .nav-item {
        padding: 10px 12px;
        font-size: 15px;
        min-width: 70px;
    }

    .main-content {
        padding: 32px 12px;
    }

    .about-page-title,
    .service-page-title {
        font-size: 20px;
        margin-bottom: 20px;
    }

    .service-layout {
        gap: 16px;
    }

    .service-menu-item a {
        padding: 10px 12px;
        font-size: 14px;
    }

    .service-content-title {
        font-size: 20px;
        margin-bottom: 16px;
    }

    .service-content-body {
        font-size: 14px;
    }

    .service-content-layout {
        display: block;
    }

    .service-image-carousel {
        float: none;
        width: 100%;
        margin-right: 0;
        margin-bottom: 20px;
    }

    .service-text-content {
        font-size: 14px;
        overflow: visible;
    }

    .about-section {
        margin-bottom: 24px;
        padding: 0 12px;
    }

    .about-text p {
        font-size: 14px;
        margin-bottom: 12px;
    }

    .about-image {
        margin-top: 12px;
    }

    .about-gallery,
    .service-gallery {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 20px;
    }

    .business-card {
        padding: 24px 20px;
    }

    .card-icon {
        font-size: 48px;
        margin-bottom: 16px;
    }

    .business-card h2 {
        font-size: 18px;
    }

    .business-card p {
        font-size: 13px;
    }

    .service-list li {
        font-size: 13px;
        padding: 5px 0;
    }

    .service-advantages,
    .service-process {
        margin-top: 24px;
        padding-top: 20px;
    }

    .advantages-title,
    .process-title {
        font-size: 16px;
        margin-bottom: 16px;
    }

    .advantage-number,
    .step-number {
        width: 24px;
        height: 24px;
        font-size: 11px;
        margin-right: 10px;
    }

    .advantage-text,
    .step-text {
        font-size: 13px;
    }

    .process-steps {
        padding-left: 18px;
        gap: 10px;
    }

    .process-steps::before {
        left: 11px;
    }

    .process-step {
        padding-left: 32px;
    }

    .service-images {
        margin-top: 24px;
        padding-top: 20px;
        grid-template-columns: 1fr;
        gap: 16px;
        justify-items: center;
    }

    .service-image {
        max-width: 320px;
        width: 100%;
        margin: 0 auto;
        object-fit: contain;
    }

    .service-action {
        margin-top: 20px;
        padding-top: 16px;
    }

    .service-detail-btn {
        padding: 16px 36px;
        font-size: 20px;
        width: 100%;
        max-width: 280px;
        min-height: 52px;
        -webkit-tap-highlight-color: rgba(26, 115, 232, 0.2);
    }

    .btn-primary {
        padding: 11px 24px;
        font-size: 14px;
    }

    .chat-window {
        max-height: 65vh;
    }

    .chat-body {
        height: calc(65vh - 50px);
    }

    .modal-content {
        padding: 20px 16px;
        border-radius: 12px 12px 0 0;
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .chat-window {
        max-height: 80vh;
    }

    .chat-body {
        height: calc(80vh - 50px);
    }

    .modal-content {
        max-height: 90vh;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .nav-item,
    .btn-primary,
    .chat-input-area button {
        -webkit-tap-highlight-color: rgba(26, 115, 232, 0.1);
    }

    .business-card {
        cursor: default;
    }

    .business-card:active {
        opacity: 0.9;
    }
}

/* ========== 系统入口 ========== */
.system-entry-section {
    max-width: 1200px;
    margin: 60px auto 0;
    padding: 40px 24px;
}

.system-entry-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 50px;
    gap: 15px;
}

.system-entry-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, transparent, #0066cc, transparent);
    max-width: 500px;
}

.system-entry-icon {
    color: #0066cc;
    font-size: 14px;
    line-height: 1;
}

.system-entry-title {
    font-size: 32px;
    font-weight: 600;
    color: #0066cc;
    margin: 0 20px;
    letter-spacing: 2px;
}

.system-entry-cards {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

/* 政策法规部分 */
.policy-section {
    margin-top: 80px;
    padding: 0 20px;
}

.policy-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
    gap: 15px;
}

.policy-list {
    max-width: 1200px;
    margin: 0 auto;
}

.policy-item {
    padding: 20px;
    margin-bottom: 20px;
    background: #fff;
    border-radius: 8px;
    border-left: 4px solid #0066cc;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    cursor: pointer;
    transition: all 0.3s ease;
}

.policy-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.15);
    border-left-color: #0052a3;
}

.policy-item-title {
    font-size: 18px;
    font-weight: 600;
    color: #0066cc;
    margin-bottom: 10px;
}

.policy-item-summary {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.policy-more-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 24px;
    margin-top: 10px;
    background: #0066cc;
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 16px;
    font-weight: 500;
}

.policy-more-btn:hover {
    background: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.policy-more-arrow {
    font-size: 18px;
    transition: transform 0.3s ease;
}

.policy-more-btn:hover .policy-more-arrow {
    transform: translateX(4px);
}

/* 政策法规免责声明 */
.policy-disclaimer {
    display: flex;
    gap: 16px;
    padding: 20px;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #fff3cd 0%, #ffe69c 100%);
    border-left: 4px solid #ffc107;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(255, 193, 7, 0.2);
}

.policy-disclaimer-icon {
    font-size: 28px;
    flex-shrink: 0;
    line-height: 1;
}

.policy-disclaimer-content {
    flex: 1;
}

.policy-disclaimer-title {
    font-size: 16px;
    font-weight: 600;
    color: #856404;
    margin-bottom: 8px;
}

.policy-disclaimer-text {
    font-size: 14px;
    color: #856404;
    line-height: 1.6;
}

.system-entry-card {
    position: relative;
    width: 200px;
    height: 200px;
    background: linear-gradient(180deg, rgba(0, 102, 204, 0.1) 0%, rgba(255, 255, 255, 0.95) 100%);
    border-radius: 12px;
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.system-entry-card-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        /* 多个圆形光晕 */
        radial-gradient(circle at 20% 30%, rgba(0, 102, 204, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 102, 204, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(0, 102, 204, 0.08) 0%, transparent 60%),
        /* 斜线网格 */
        linear-gradient(45deg, transparent 30%, rgba(0, 102, 204, 0.06) 50%, transparent 70%),
        linear-gradient(-45deg, transparent 30%, rgba(0, 102, 204, 0.06) 50%, transparent 70%),
        /* 水平波浪线 */
        repeating-linear-gradient(0deg, transparent, transparent 20px, rgba(0, 102, 204, 0.03) 20px, rgba(0, 102, 204, 0.03) 22px),
        /* 垂直波浪线 */
        repeating-linear-gradient(90deg, transparent, transparent 20px, rgba(0, 102, 204, 0.03) 20px, rgba(0, 102, 204, 0.03) 22px),
        /* 点状图案 */
        radial-gradient(circle at 25% 25%, rgba(0, 102, 204, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, rgba(0, 102, 204, 0.1) 1px, transparent 1px),
        /* 几何图形 */
        linear-gradient(135deg, rgba(0, 102, 204, 0.04) 0%, transparent 25%),
        linear-gradient(225deg, rgba(0, 102, 204, 0.04) 0%, transparent 25%);
    background-size: 
        150% 150%, 
        120% 120%, 
        200% 200%,
        60px 60px, 
        60px 60px,
        40px 40px,
        40px 40px,
        30px 30px,
        30px 30px,
        100% 100%,
        100% 100%;
    background-position: 
        0% 0%, 
        100% 100%, 
        50% 50%,
        0 0, 
        0 0,
        0 0,
        0 0,
        0 0,
        0 0,
        0 0,
        0 0;
    opacity: 0.7;
    z-index: 0;
    animation: patternMove 20s ease-in-out infinite;
}

/* 专家抽取卡片使用自定义背景图片 */
.system-entry-card-expert-extraction .system-entry-card-pattern {
    background-image: url('../images/system-entry/card-01-expert-extraction.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 1;
    animation: none;
    transition: opacity 0.3s ease;
}

/* 专家抽取卡片增加更厚的遮罩，确保文字清晰 */
.system-entry-card-expert-extraction .system-entry-card-overlay {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.85) 0%, rgba(255, 255, 255, 0.95) 100%);
}

/* 专家抽取卡片激活时显示蓝色背景，隐藏背景图片 */
.system-entry-card-expert-extraction:hover,
.system-entry-card-expert-extraction:active {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.9) 0%, rgba(0, 102, 204, 0.95) 100%);
}

.system-entry-card-expert-extraction:hover .system-entry-card-pattern,
.system-entry-card-expert-extraction:active .system-entry-card-pattern {
    opacity: 0;
}

.system-entry-card-expert-extraction:hover .system-entry-card-overlay,
.system-entry-card-expert-extraction:active .system-entry-card-overlay {
    opacity: 0.1;
}

/* 专家登录卡片使用自定义背景图片 */
.system-entry-card-expert-login .system-entry-card-pattern {
    background-image: url('../images/system-entry/card-02-expert-login.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 1;
    animation: none;
    transition: opacity 0.3s ease;
}

.system-entry-card-expert-login .system-entry-card-overlay {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.85) 0%, rgba(255, 255, 255, 0.95) 100%);
}

.system-entry-card-expert-login:hover,
.system-entry-card-expert-login:active {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.9) 0%, rgba(0, 102, 204, 0.95) 100%);
}

.system-entry-card-expert-login:hover .system-entry-card-pattern,
.system-entry-card-expert-login:active .system-entry-card-pattern {
    opacity: 0;
}

.system-entry-card-expert-login:hover .system-entry-card-overlay,
.system-entry-card-expert-login:active .system-entry-card-overlay {
    opacity: 0.1;
}

/* 管理登录卡片使用自定义背景图片 */
.system-entry-card-admin-login .system-entry-card-pattern {
    background-image: url('../images/system-entry/card-03-admin-login.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 1;
    animation: none;
    transition: opacity 0.3s ease;
}

.system-entry-card-admin-login .system-entry-card-overlay {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.85) 0%, rgba(255, 255, 255, 0.95) 100%);
}

.system-entry-card-admin-login:hover,
.system-entry-card-admin-login:active {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.9) 0%, rgba(0, 102, 204, 0.95) 100%);
}

.system-entry-card-admin-login:hover .system-entry-card-pattern,
.system-entry-card-admin-login:active .system-entry-card-pattern {
    opacity: 0;
}

.system-entry-card-admin-login:hover .system-entry-card-overlay,
.system-entry-card-admin-login:active .system-entry-card-overlay {
    opacity: 0.1;
}

/* 供应商登录卡片使用自定义背景图片 */
.system-entry-card-supplier-login .system-entry-card-pattern {
    background-image: url('../images/system-entry/card-04-supplier-login.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 1;
    animation: none;
    transition: opacity 0.3s ease;
}

.system-entry-card-supplier-login .system-entry-card-overlay {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.85) 0%, rgba(255, 255, 255, 0.95) 100%);
}

.system-entry-card-supplier-login:hover,
.system-entry-card-supplier-login:active {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.9) 0%, rgba(0, 102, 204, 0.95) 100%);
}

.system-entry-card-supplier-login:hover .system-entry-card-pattern,
.system-entry-card-supplier-login:active .system-entry-card-pattern {
    opacity: 0;
}

.system-entry-card-supplier-login:hover .system-entry-card-overlay,
.system-entry-card-supplier-login:active .system-entry-card-overlay {
    opacity: 0.1;
}

/* 业主登录卡片使用自定义背景图片 */
.system-entry-card-owner-login .system-entry-card-pattern {
    background-image: url('../images/system-entry/card-05-owner-login.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 1;
    animation: none;
    transition: opacity 0.3s ease;
}

.system-entry-card-owner-login .system-entry-card-overlay {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.85) 0%, rgba(255, 255, 255, 0.95) 100%);
}

.system-entry-card-owner-login:hover,
.system-entry-card-owner-login:active {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.9) 0%, rgba(0, 102, 204, 0.95) 100%);
}

.system-entry-card-owner-login:hover .system-entry-card-pattern,
.system-entry-card-owner-login:active .system-entry-card-pattern {
    opacity: 0;
}

.system-entry-card-owner-login:hover .system-entry-card-overlay,
.system-entry-card-owner-login:active .system-entry-card-overlay {
    opacity: 0.1;
}

.system-entry-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.5) 100%);
    z-index: 1;
    transition: opacity 0.3s ease;
}

.system-entry-card-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.05) 0%, rgba(0, 102, 204, 0.15) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 2;
}

.system-entry-card:hover,
.system-entry-card:active {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 102, 204, 0.15);
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.9) 0%, rgba(0, 102, 204, 0.95) 100%);
}

.system-entry-card:hover .system-entry-card-bg,
.system-entry-card:active .system-entry-card-bg {
    opacity: 1;
}

.system-entry-card:hover .system-entry-card-overlay,
.system-entry-card:active .system-entry-card-overlay {
    opacity: 0.1;
}

.system-entry-card:hover .system-entry-card-icon,
.system-entry-card:active .system-entry-card-icon {
    color: #ffffff;
}

.system-entry-card:hover .system-entry-card-title,
.system-entry-card:active .system-entry-card-title {
    color: #ffffff;
}

.system-entry-card:hover .system-entry-card-subtitle,
.system-entry-card:active .system-entry-card-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

.system-entry-card-icon {
    width: 80px;
    height: 80px;
    color: #0066cc;
    margin-bottom: 20px;
    position: relative;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.system-entry-card-icon svg {
    width: 100%;
    height: 100%;
}

.system-entry-card-title {
    font-size: 20px;
    font-weight: 600;
    color: #0066cc;
    margin: 0 0 10px 0;
    position: relative;
    z-index: 3;
    text-align: center;
}

.system-entry-card-subtitle {
    font-size: 14px;
    color: #666;
    margin: 0;
    position: relative;
    z-index: 3;
    text-align: center;
}

@keyframes patternMove {
    0%, 100% {
        background-position: 
            0% 0%, 
            100% 100%, 
            50% 50%,
            0 0, 
            0 0,
            0 0,
            0 0,
            0 0,
            0 0,
            0 0,
            0 0;
    }
    50% {
        background-position: 
            100% 100%, 
            0% 0%, 
            30% 70%,
            40px 40px, 
            -40px -40px,
            20px 20px,
            -20px -20px,
            15px 15px,
            -15px -15px,
            10% 10%,
            -10% -10%;
    }
}

@media (max-width: 768px) {
    .system-entry-cards {
        gap: 20px;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .system-entry-card {
        width: calc(50% - 10px);
        min-width: 140px;
        max-width: 180px;
        height: auto;
        min-height: 200px;
        padding: 20px 15px;
    }
    
    .system-entry-card-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 12px;
    }
    
    .system-entry-card-title {
        font-size: 16px;
        line-height: 1.4;
    }
    
    .system-entry-title {
        font-size: 24px;
    }
    
    .system-entry-line {
        max-width: 150px;
    }
    
    .system-entry-icon {
        font-size: 12px;
    }
}

/* ========== 平板设备优化 (768px - 1024px) ========== */
@media (min-width: 769px) and (max-width: 1024px) {
    .main-content {
        padding: 50px 20px;
    }
    
    .header-container {
        padding: 12px 20px;
    }
    
    .company-name h1 {
        font-size: 28px;
    }
    
    .company-english {
        font-size: 16px;
    }
    
    .company-categories {
        font-size: 18px;
    }
    
    .nav-item {
        padding: 14px 18px;
        font-size: 16px;
    }
    
    .home-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .service-layout {
        grid-template-columns: 280px 1fr;
        gap: 24px;
    }
    
    .system-entry-cards {
        gap: 24px;
    }
    
    .system-entry-card {
        width: 180px;
    }
    
    .content-container {
        max-width: 100%;
        padding: 0 20px;
    }
}

/* ========== 小屏手机优化 (最大480px) ========== */
@media (max-width: 480px) {
    .site-header {
        min-height: 180px;
    }
    
    .header-container {
        padding: 10px 12px;
        gap: 10px;
    }
    
    .company-name h1 {
        font-size: 20px;
        letter-spacing: 1px;
        margin-bottom: 3px;
    }
    
    .company-english {
        font-size: 13px;
    }
    
    .company-categories {
        font-size: 14px;
    }
    
    .service-hotline,
    .service-hotline-mobile {
        font-size: 15px;
    }
    
    .service-hotline .contact-phone,
    .service-hotline-mobile .contact-phone {
        font-size: 18px;
    }
    
    .main-content {
        padding: 30px 12px;
    }
    
    .about-page-title,
    .service-page-title {
        font-size: 22px;
        margin-bottom: 20px;
    }
    
    .home-tab-btn {
        padding: 12px 16px;
        font-size: 15px;
    }
    
    .system-entry-card {
        width: calc(50% - 8px);
        min-width: 130px;
        max-width: 160px;
        padding: 16px 12px;
        min-height: 180px;
    }
    
    .system-entry-card-icon {
        width: 45px;
        height: 45px;
        margin-bottom: 10px;
    }
    
    .system-entry-card-title {
        font-size: 15px;
    }
    
    .system-entry-title {
        font-size: 20px;
    }
    
    .system-entry-line {
        max-width: 100px;
    }
    
    .nav-menu {
        width: 260px;
        max-width: 90vw;
    }
    
    .bidding-card {
        padding: 24px 16px;
    }
    
    .bidding-title {
        font-size: 18px;
    }
    
    .footer-links {
        font-size: 13px;
        flex-wrap: wrap;
        gap: 4px;
    }
    
    .footer-links a {
        font-size: 13px;
    }
    
    .link-separator {
        margin: 0 4px;
    }
    
    .service-content-body table {
        font-size: 13px;
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
    }
    
    .service-content-body table thead,
    .service-content-body table tbody,
    .service-content-body table tr {
        display: block;
    }
    
    .service-content-body table th,
    .service-content-body table td {
        padding: 8px 6px;
        display: inline-block;
        min-width: 80px;
    }
    
    /* 表格在移动端改为卡片式布局 */
    .service-content-body table {
        display: table;
        width: 100%;
        min-width: 600px;
    }
    
    .service-content-body .table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin: 16px 0;
    }
    
    .service-content-body .table-wrapper table {
        min-width: 600px;
    }
    
    /* 首页Tab按钮优化 */
    .home-tab-menu {
        gap: 8px;
    }
    
    .home-tab-btn {
        flex: 1;
        font-size: 15px;
    }
    
    /* 首页内容区域优化 */
    .home-tab-content {
        padding: 20px 16px;
        font-size: 15px;
        line-height: 1.7;
    }
    
    .home-tab-intro {
        font-size: 15px;
        margin-bottom: 16px;
    }
    
    .home-content-features {
        font-size: 14px;
    }
    
    .home-content-features p {
        margin-bottom: 12px;
        line-height: 1.6;
    }
    
    /* 轮播图优化 */
    .carousel-container {
        border-radius: 8px;
    }
    
    .carousel-image {
        border-radius: 8px;
    }
    
    /* 政策法规列表优化 */
    .policy-list {
        gap: 16px;
    }
    
    .policy-item {
        padding: 16px;
    }
    
    .policy-item-title {
        font-size: 16px;
        margin-bottom: 8px;
    }
    
    .policy-item-summary {
        font-size: 14px;
        line-height: 1.6;
    }
    
    .policy-more-btn {
        padding: 12px 24px;
        font-size: 15px;
        margin-top: 20px;
    }
    
    /* 登录页面优化 */
    .admin-login-container {
        padding: 30px 20px;
    }
    
    .admin-login-title {
        font-size: 28px;
        margin-bottom: 24px;
    }
    
    .login-form {
        padding: 24px 20px;
    }
    
    .form-group input {
        font-size: 16px; /* 防止iOS自动缩放 */
        padding: 14px 16px;
        min-height: 44px;
    }
    
    .login-button {
        padding: 14px 24px;
        font-size: 16px;
        min-height: 44px;
    }
    
    /* 专家抽取页面优化 */
    .expert-search-form {
        padding: 20px 16px;
    }
    
    .expert-search-form input {
        font-size: 16px;
        padding: 12px 16px;
        min-height: 44px;
    }
    
    .search-button {
        padding: 12px 24px;
        font-size: 16px;
        min-height: 44px;
    }
    
    .expert-details {
        grid-template-columns: 1fr;
    }
    
    /* 联系页面优化 */
    .contact-page {
        padding: 24px 16px;
    }
    
    .contact-page-title {
        font-size: 28px;
        margin-bottom: 24px;
    }
    
    .contact-page-item {
        padding: 20px;
        margin-bottom: 20px;
    }
    
    /* 页脚优化 */
    .site-footer {
        padding: 30px 16px 20px;
        font-size: 14px;
    }
    
    .footer-links {
        line-height: 1.8;
    }
    
    /* 图片优化 */
    .service-image-carousel {
        float: none;
        width: 100%;
        margin-right: 0;
        margin-bottom: 20px;
    }
    
    .about-image img,
    .gallery-item img {
        width: 100%;
        height: auto;
    }
}

/* ========== 触摸设备优化 ========== */
@media (hover: none) and (pointer: coarse) {
    .nav-item {
        min-height: 44px;
        padding: 14px 20px;
    }
    
    .home-tab-btn {
        min-height: 44px;
        padding: 12px 20px;
    }
    
    button,
    .btn,
    a.btn {
        min-height: 44px;
        padding: 12px 24px;
    }
    
    .system-entry-card {
        cursor: pointer;
    }
    
    .service-menu-item a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    /* 移除hover效果，使用active状态 */
    .nav-item:hover {
        background-color: transparent;
    }
    
    .nav-item:active {
        background-color: rgba(255, 255, 255, 0.15);
    }
}

/* ========== 横屏手机优化 ========== */
@media (max-width: 768px) and (orientation: landscape) {
    .site-header {
        min-height: 160px;
    }
    
    .header-container {
        flex-direction: row;
        gap: 20px;
    }
    
    .company-name h1 {
        font-size: 22px;
    }
    
    .nav-menu {
        width: 320px;
        padding: 60px 0 20px 0;
    }
    
    .system-entry-cards {
        gap: 16px;
    }
    
    .system-entry-card {
        width: calc(33.333% - 12px);
        max-width: 160px;
    }
}

/* ========== 大屏手机优化 (481px - 768px) ========== */
@media (min-width: 481px) and (max-width: 768px) {
    .system-entry-card {
        width: calc(50% - 12px);
        max-width: 200px;
    }
    
    .nav-menu {
        width: 300px;
    }
}