/* ============================================
   北京盈析官网 - 全局统一样式
   清爽风格 + 粒子背景 + 双向滚动动画
   ============================================ */

/* ---------- CSS变量 ---------- */
:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #eff6ff;
    --secondary: #10b981;
    --accent: #ef4444;

    --bg-primary: #ffffff;
    --bg-secondary: #f5f7fa;
    --bg-dark: #0f172a;
    --bg-light: #f8fafc;
    --bg-gradient-start: #f0f9ff;
    --bg-gradient-end: #e0f2fe;

    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;
    --nav-text: #727280;

    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-bg-dark: rgba(15, 23, 42, 0.8);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --transition: all 0.3s ease;

    --container-max: 1200px;
    --container-padding: 24px;
    
    --nav-height: 72px;
}

/* ============================================
   悬浮窗样式
   ============================================ */
.float-widget {
    position: fixed;
    right: 24px;
    bottom: 120px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.float-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #f5f7fa;
    color: #4a5568;
    border: 1px solid #e2e8f0;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
}

.float-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    background: #edf2f7;
}

.float-btn svg {
    width: 22px;
    height: 22px;
}

.float-btn-label {
    font-size: 10px;
    margin-top: 2px;
    line-height: 1.2;
}

.float-btn.wechat-btn {
    background: #f5f7fa;
    color: #4a5568;
    border: 1px solid #e2e8f0;
}

.float-btn.wechat-btn:hover {
    background: #edf2f7;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

/* 电话号码弹窗 */
.float-phone-popup {
    position: absolute;
    right: 64px;
    bottom: 0;
    background: white;
    border-radius: 12px;
    padding: 16px 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px);
    transition: all 0.3s ease;
    z-index: 9998;
    border: 1px solid #e2e8f0;
    min-width: 160px;
    text-align: center;
}

.float-phone-popup.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.phone-number {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 6px;
}

.phone-hours {
    font-size: 13px;
    color: #64748b;
}

/* 二维码弹窗 */
.float-qr-popup {
    position: absolute;
    right: 64px;
    bottom: 0;
    background: white;
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px);
    transition: all 0.3s ease;
    z-index: 9998;
}

.float-qr-popup.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.float-qr-code {
    width: 140px;
    height: 140px;
    border-radius: 8px;
    overflow: hidden;
}

.float-qr-code img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.float-qr-tip {
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* 返回顶部按钮 */
.back-to-top {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #f5f7fa;
    color: #4a5568;
    border: 1px solid #e2e8f0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
}

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

.back-to-top:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    background: #edf2f7;
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* ---------- 重置 ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }

/* ---------- 容器 ---------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- 图片占位系统 ---------- */
.img-placeholder {
    position: relative;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 50%, #f1f5f9 100%);
    background-size: 200% 200%;
    animation: shimmer 2s ease-in-out infinite;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.img-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.4) 50%, transparent 100%),
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 10px,
            rgba(59, 130, 246, 0.03) 10px,
            rgba(59, 130, 246, 0.03) 20px
        );
}

.img-placeholder::after {
    content: attr(data-label);
    position: relative;
    z-index: 1;
    font-size: 13px;
    color: var(--text-light);
    opacity: 0.6;
    text-align: center;
    padding: 12px;
    font-weight: 500;
}

.img-placeholder img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 2;
}

.img-placeholder img.error { display: none; }

@keyframes shimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.img-placeholder-hero { width: 100%; height: 100%; }
.img-placeholder-client { width: 160px; height: 48px; border-radius: var(--radius-sm); }
.img-placeholder-arch { width: 100%; aspect-ratio: 2/1; border-radius: var(--radius-lg); }
.img-placeholder-news { width: 100%; aspect-ratio: 16/9; border-radius: var(--radius-md) var(--radius-md) 0 0; }
.img-placeholder-product { width: 100%; aspect-ratio: 14/10; border-radius: var(--radius-lg); }
.img-placeholder-solution { width: 100%; aspect-ratio: 16/9; border-radius: var(--radius-md); }
.img-placeholder-case { width: 100%; aspect-ratio: 14/10; border-radius: var(--radius-md); }
.img-placeholder-about { width: 100%; aspect-ratio: 14/10; border-radius: var(--radius-lg); }
.img-placeholder-cert { width: 200px; height: 280px; border-radius: var(--radius-md); }
.img-placeholder-qr { width: 140px; height: 140px; border-radius: var(--radius-sm); }
.img-placeholder-wechat { width: 150px; height: 150px; border-radius: var(--radius-sm); }




/* 🔥 强制清除客户LOGO区域所有占位背景、斜纹、动画、文字 */
.client-item .img-placeholder-client {
  background: transparent !important;
  animation: none !important;
  border-radius: 0 !important;
}
.client-item .img-placeholder-client::before,
.client-item .img-placeholder-client::after {
  display: none !important;
}
.client-item .img-placeholder-client img {
  position: static !important;
  width: auto !important;
  height: 48px !important;
  max-width: 160px !important;
  object-fit: contain !important;
  display: block !important;
  z-index: 1 !important;
}

/* ---------- 粒子画布 ---------- */
.page-particles {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: auto;
}

.section-particles {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: auto;
}

main { position: relative; z-index: 1; }

/* ---------- 毛玻璃组件 ---------- */
.glass-navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-height);
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
    transition: var(--transition);
}

.glass-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.glass-footer {
    background: #f5f7fa;
    border-top: 1px solid rgba(0,0,0,0.06);
    color: var(--text-secondary);
    padding: 3px 0 24px;
    margin-top: 60px;
}

/* ---------- 导航栏 ---------- */
.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-left .logo-link {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 36px;
    width: auto;
    border-radius: var(--radius-sm);
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 28px;
}

.nav-link {
    text-decoration: none;
    color: var(--nav-text);
    font-size: 14px;
    font-weight: 500;
    padding: 6px 0;
    position: relative;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background: var(--primary);
    transition: var(--transition);
    border-radius: 2px;
}

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

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

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

.nav-phone-text {
    font-size: 16px;
    font-weight: 500;
    color: var(--nav-text);
    white-space: nowrap;
    transition: var(--transition);
}

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

/* 微信下拉 */
.wechat-dropdown { position: relative; }

.wechat-qr {
    position: absolute;
    top: calc(100% + 12px); right: 0;
    background: white;
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition);
    z-index: 1001;
    text-align: center;
}

.wechat-qr img {
    width: 150px; height: 150px;
    border-radius: var(--radius-sm);
    display: block;
}

.wechat-qr p {
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.wechat-dropdown:hover .wechat-qr {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px; height: 2px;
    background: var(--nav-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ---------- 按钮系统 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-xl);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 12px rgba(59, 130, 246, 0.25);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

.btn-outline {
    background: rgba(114, 114, 128, 0.2);
    color: white;
    border: 1.5px solid rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: rgba(114, 114, 128, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-large {
    padding: 14px 36px;
    font-size: 16px;
}

.btn-icon {
    width: 36px; height: 36px;
    padding: 0;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
}

.btn-icon:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.05);
}

.btn-text {
    background: none;
    color: var(--primary);
    padding: 8px 0;
    font-weight: 500;
}

.btn-text:hover {
    color: var(--primary-dark);
    transform: translateX(4px);
}

/* ---------- 页脚 ---------- */
.footer-grid-detailed {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr 1.2fr;
    gap: 24px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(0,0,0,0.06);
}

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

.footer-grid-detailed .footer-brand p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
    margin-top: 12px;
}

.footer-grid-detailed .footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.footer-grid-detailed .footer-col ul {
    list-style: none;
}

.footer-grid-detailed .footer-col ul li {
    margin-bottom: 10px;
}

.footer-grid-detailed .footer-col ul li a {
    font-size: 13px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-grid-detailed .footer-col ul li a:hover {
    color: var(--primary);
}

.footer-grid-detailed .footer-qr {
    display: flex;
    gap: 12px;
}

.footer-grid-detailed .footer-qr-item {
    text-align: center;
}

.footer-grid-detailed .footer-qr-item img {
    width: 80px; height: 80px;
    border-radius: var(--radius-sm);
    object-fit: contain;
    background: white;
    border: 1px solid rgba(0,0,0,0.06);
}

.footer-grid-detailed .footer-qr-item p {
    font-size: 11px;
    color: var(--text-light);
    margin-top: 6px;
}

.footer-contact-inline {
    display: flex;
    gap: 24px;
    padding-top: 16px;
    font-size: 13px;
    color: var(--text-light);
}

.footer-services {
    display: flex;
    justify-content: flex-start;
    gap: 60px;
    padding: 5px 0 10px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    margin-bottom: 24px;
    margin-left: 0;
}

.service-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
}

.service-icon {
    flex-shrink: 0;
}

.service-icon svg {
    width: 32px;
    height: 32px;
}

.service-item:nth-child(1) .service-icon svg {
    color: #4A90D9;
}

.service-item:nth-child(2) .service-icon svg {
    color: #5BA3E8;
}

.service-item:nth-child(3) .service-icon svg {
    color: #6CB8F7;
}

.service-item:nth-child(4) .service-icon svg {
    color: #7DCDF6;
}

.service-text {
    display: flex;
    flex-direction: column;
}

.service-text h5 {
    font-size: 16px;
    font-weight: 500;
    color: #1e293b;
    margin-bottom: 2px;
}

.service-text p {
    font-size: 13px;
    color: #1e293b;
    line-height: 1.4;
}

.footer-bottom {
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-light);
}

/* ---------- 通用区块 ---------- */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

/* ---------- 页面标题区 ---------- */
.page-hero {
    position: relative;
    padding: 120px 0 60px;
    text-align: center;
    overflow: hidden;
    background: #f5f7fa;
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    /* 父容器只做相对定位，不抢层级 */
    z-index: unset;
}

#particleCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* 放在最底层 */
    z-index: 1;
    /* 关键：允许鼠标事件，JS才能拿到坐标 */
    pointer-events: auto;
    background: transparent;
}

/* 文字内容必须盖在 canvas 上面 */
.page-hero .hero-content {
    position: relative;
    z-index: 10;
}

.page-hero .section-particles {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: auto;
}

.page-hero .hero-content {
    position: relative;
    z-index: 2;
    pointer-events: auto;
    text-align: center;
    display: block;
    width: auto;
    height: auto;
    align-items: unset;
}

.page-hero .hero-content a,
.page-hero .hero-content button {
    pointer-events: auto;
}

.page-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    display: block;
    text-align: center;
}

.page-subtitle {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    display: block;
    text-align: center;
}

/* ---------- 表单 ---------- */
.form-group { margin-bottom: 20px; }

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-group label .required { color: #ef4444; }

.form-control {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: var(--radius-sm);
    background: var(--bg-white);
    color: var(--text-primary);
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2364748b' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* ---------- 双向滚动动画 ---------- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.92);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* ============================================
   首页样式
   ============================================ */

.hero-section {
    position: relative;
    height: 90vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg-slider {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.hero-slide.active { opacity: 1; }

.hero-slide .img-placeholder {
    width: 100%; height: 100%;
}

.hero-slide .img-placeholder img {
    width: 100%; height: 100%;
    object-fit: cover;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
}

.hero-text {
    position: absolute;
    max-width: 720px;
    color: white;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.hero-text.active {
    opacity: 1;
    pointer-events: auto;
}


.hero-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
    text-shadow: 0 2px 12px rgba(0,0,0,0.5), 0 4px 24px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.7;
    margin-bottom: 16px;
    max-width: 600px;
	color: #727280;
}

.hero-desc {
    font-size: 16px;
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: 40px;
    max-width: 560px;
	color: #727280;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-indicators {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: 12px;
}

.indicator {
    width: 40px; height: 4px;
    background: rgba(255,255,255,0.4);
    border-radius: 2px;
    cursor: pointer;
    transition: var(--transition);
}

.indicator.active {
    background: white;
    width: 60px;
}

/* 客户Logo轮播 */
.client-section {
    padding: 24px 0;
    background: white;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    margin-top: -1px;
    position: relative;
    z-index: 2;
}

.client-carousel { overflow: hidden; }

.client-track {
    display: flex;
    gap: 48px;
    animation: scroll 30s linear infinite;
    width: max-content;
}

.client-item { flex-shrink: 0; }

.client-item .img-placeholder {
    width: 160px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent !important; /* 强制无背景色 */
    border: none !important; /* 强制无边框 */
    outline: none !important;
    box-shadow: none !important;
}

/* 图片：自适应、无变形、无裁剪、无边框 */
.client-item .img-placeholder img {
    width: auto;
    height: 48px; /* 只限制高度统一，宽度自动适配 */
    max-width: 160px; /* 防止过宽 */
    object-fit: contain;
    display: block;
    border: none !important;
    outline: none !important;
    background: transparent !important;
    box-shadow: none !important;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* 系统架构 */
.architecture-section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.architecture-section .container {
  position: relative;
  z-index: 1;
}

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

.architecture-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.architecture-image {
    margin-bottom: 32px;
    width: 100%;
    max-width: 1200px;
}

.architecture-image .img-placeholder {
    width: 100% !important;
    height: auto !important;
    max-height: none !important;
    background: none !important;
    animation: none !important;
    aspect-ratio: unset !important;
    overflow: visible !important;
}

.architecture-image .img-placeholder::before,
.architecture-image .img-placeholder::after {
    display: none !important;
}

.architecture-image .img-placeholder img {
    width: 100% !important;
    max-width: 100% !important;
    height: auto !important;
    object-fit: contain !important;
    object-position: center center;
    display: block;
    position: static;
}

.architecture-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 最新动态 */
.news-section {
    padding: 60px 0;
    background: white;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.news-section .container { position: relative; z-index: 1; }

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    overflow: hidden;
    cursor: pointer;
}

.news-image {
    position: relative;
    overflow: hidden;
    height: 160px;
}

.news-image .img-placeholder { width: 100%; height: 100%; }

.news-image .img-placeholder img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.news-body { padding: 16px 20px 20px; }

.news-tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-xl);
    margin-bottom: 8px;
}

.news-title {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-date {
    font-size: 13px;
    color: var(--text-light);
}

.news-footer {
    text-align: center;
    margin-top: 32px;
}

/* ============================================
   产品页样式 - 交错渐入
   ============================================ */

.products-section {
    padding: 40px 48px 80px;
    background: var(--bg-white);
    position: relative;
    z-index: 2;
}

.product-row {
    max-width: 1200px;
    margin: 0 auto 64px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.product-row.visible { opacity: 1; }

.product-row:nth-child(even) .product-visual { order: 2; }
.product-row:nth-child(even) .product-text { order: 1; }

/* 交错渐入动画 */
.product-row .product-visual {
    opacity: 0;
    transform: translateX(-60px);
    transition: opacity 0.7s ease 0.1s, transform 0.7s ease 0.1s;
}

.product-row.visible .product-visual {
    opacity: 1;
    transform: translateX(0);
}

.product-row .product-text > * {
    opacity: 0;
    transform: translateX(60px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.product-row.visible .product-text > * {
    opacity: 1;
    transform: translateX(0);
}

/* 偶数行反向 */
.product-row:nth-child(even) .product-visual {
    order: 2;
    transform: translateX(60px);
}

.product-row:nth-child(even) .product-text {
    order: 1;
}

.product-row:nth-child(even) .product-text > * {
    transform: translateX(-60px);
}

/* visible状态必须覆盖所有偏移，提高特异性确保优先级 */
.products-section .product-row.visible .product-visual,
.products-section .product-row.visible .product-text > * {
    opacity: 1;
    transform: translateX(0);
}

/* 文字内容依次延迟 */
.products-section .product-row.visible .product-text h2 { transition-delay: 0.1s; }
.products-section .product-row.visible .product-text .tagline { transition-delay: 0.18s; }
.products-section .product-row.visible .product-text .desc { transition-delay: 0.26s; }
.products-section .product-row.visible .product-text .highlight { transition-delay: 0.34s; }

/* 产品视觉 */
.product-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    border: 1px solid rgba(0,0,0,0.04);
    overflow: hidden;
}

.product-visual img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    opacity: 0.9;
}

.product-visual .placeholder-note {
    color: var(--text-secondary);
    font-size: 14px;
}

/* 产品轮播图样式 */
.product-carousel {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 320px;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s ease-out;
}

.carousel-slide {
    flex: 0 0 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-slide img {
    max-width: 100%;
    max-height: 320px;
    object-fit: contain;
}

.carousel-prev,
.carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(0, 0, 0, 0.1);
    color: #4a5568;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.carousel-prev {
    left: 12px;
}

.carousel-next {
    right: 12px;
}

.carousel-prev:hover,
.carousel-next:hover {
    background: white;
    border-color: #cbd5e1;
    transform: translateY(-50%) scale(1.05);
}

.carousel-prev svg,
.carousel-next svg {
    width: 18px;
    height: 18px;
}

.carousel-indicators {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(74, 85, 104, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    width: 24px;
    border-radius: 5px;
    background: var(--primary);
}

.product-text h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.product-text .tagline {
    font-size: 16px;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 16px;
}

.product-text .desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.product-text .highlight {
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.7;
    padding: 14px 18px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary-light);
}

/* ============================================
   解决方案页样式
   ============================================ */

.solution-section {
    padding: 60px 0 100px;
    background: white;
}

.solution-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 48px;
    flex-wrap: wrap;
    justify-content: center;
}

.tab-btn {
    padding: 10px 24px;
    background: white;
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: var(--radius-xl);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.tab-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary-light);
}

.tab-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 2px 12px rgba(59, 130, 246, 0.25);
}

.tab-panel {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-panel.active { display: block; }

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

.solution-card {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 48px;
    padding: 48px;
    align-items: center;
}

.solution-visual {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.solution-visual img {
    width: 100%; height: auto;
    display: block;
}

.solution-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-xl);
    margin-bottom: 16px;
}

.solution-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.solution-desc {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.solution-features { display: grid; gap: 14px; }

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text-primary);
}

.feature-item svg { flex-shrink: 0; }

/* ============================================
   行业案例页样式 - 左侧目录 + 右侧文章
   ============================================ */

.cases-section { padding: 60px 0; background: white; }

.case-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 48px;
    align-items: start;
}

/* 左侧目录 */
.case-sidebar {
    position: sticky;
    top: calc(var(--nav-height) + 40px);
    height: fit-content;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 20px 0;
    overflow: hidden;
}

.case-nav-item {
    display: block;
    width: 100%;
    padding: 14px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-left: 3px solid transparent;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
    line-height: 1.5;
}

.case-nav-item:hover {
    background: rgba(255,255,255,0.6);
    color: var(--text-primary);
}

.case-nav-item.active {
    border-left-color: var(--primary);
    background: white;
    color: var(--primary);
    font-weight: 600;
}

/* 右侧内容面板 */
.case-content-panel {
    display: none;
    animation: fadeIn 0.35s ease;
}

.case-content-panel.active { display: block; }

/* 文章样式：标题 + 上文 + 下图 */
.case-article-header {
    margin-bottom: 32px;
}

.case-article-header .case-industry {
    display: inline-block;
    padding: 4px 14px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-xl);
    margin-bottom: 12px;
}

.case-article-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.case-article-header .case-subtitle {
    font-size: 17px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 16px;
}

.case-article-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.case-article-text p {
    margin-bottom: 12px;
}

.case-article-image {
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 32px;
    width: 100%;
}

.case-article-image img {
    width: 100%;
    height: auto;
    display: block;
}

.case-article-image .img-placeholder { width: 100%; aspect-ratio: 16/9; }

.case-article-image .img-placeholder img {
    width: 100%; height: 100%;
    object-fit: cover;
}

/* 保留详情块和指标 */
.case-desc {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.case-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.detail-block {
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary);
    transition: all 0.3s ease;
}

.detail-block:hover {
    border-left-width: 5px;
    background: var(--primary-light);
    transform: translateX(4px);
}

.detail-block h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.detail-block p {
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.case-metrics {
    display: flex;
    gap: 32px;
    padding-top: 20px;
    border-top: 1px solid rgba(0,0,0,0.06);
}

.case-metrics .metric {
    text-align: left;
    transition: transform 0.3s ease;
}

.case-metrics .metric:hover { transform: translateY(-4px); }

.case-metrics .metric-num {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    display: block;
    margin-bottom: 2px;
    transition: all 0.3s ease;
}

.case-metrics .metric:hover .metric-num { transform: scale(1.15); }

.case-metrics .metric-label {
    font-size: 13px;
    color: var(--text-light);
}

/* ============================================
   关于我们页样式
   ============================================ */

.about-section {
    position: relative;
    z-index: 2;
    background: var(--bg-white);
    padding: 60px 48px;
    max-width: 1100px;
    margin: 0 auto;
}

.about-intro {
    text-align: center;
    max-width: 860px;
    margin: 0 auto 60px;
}

.about-intro h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.about-intro .tagline {
    font-size: 16px;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 20px;
}

.about-intro p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 时间轴 */
.timeline-section { padding: 40px 0; }

.timeline-section h2 {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.timeline-section .tagline {
    text-align: center;
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-light), var(--primary));
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 0 40px 40px 0;
    text-align: right;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.timeline-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 40px 40px;
    text-align: left;
}

.timeline-item::after {
    content: '';
    position: absolute;
    top: 6px;
    right: -7px;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-white);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.timeline-item:nth-child(even)::after {
    right: auto;
    left: -7px;
}

.timeline-year {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.timeline-content {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.timeline-content strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 4px;
    font-size: 15px;
}

/* 团队与资质 */
.team-section {
    padding: 60px 0;
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-light) 100%);
}

.team-section h2 {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.team-section .tagline {
    text-align: center;
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

.slider-section {
    margin-bottom: 32px;
}

.slider-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    padding-left: 8px;
}

.slider-container {
    position: relative;
    display: flex;
    align-items: center;
}

.slider-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #f5f7fa;
    border: 1px solid #e2e8f0;
    color: #4a5568;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s ease;
    z-index: 10;
}

.slider-btn:hover {
    background: #edf2f7;
    border-color: #cbd5e1;
}

.slider-btn svg {
    width: 16px;
    height: 16px;
}

.slider-btn-prev {
    margin-right: 12px;
}

.slider-btn-next {
    margin-left: 12px;
}

.slider-wrapper {
    overflow: hidden;
    position: relative;
    flex: 1;
}

.slider-track {
    display: flex;
    gap: 8px;
    transition: transform 0.3s ease-out;
}

.slider-item {
    flex: 0 0 auto;
    width: auto;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    margin: 0;
}

.slider-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 0;
    margin: 0;
}

@media (max-width: 768px) {
    .slider-item {
        width: 120px;
        height: 90px;
    }
}

/* 软件著作权专用样式 - 更大图片，更小间距 */
.copyright-track {
    gap: 2px;
}

.copyright-item {
    width: auto;
    height: 160px;
    padding: 10;
    margin: 0;
}

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

@media (max-width: 768px) {
    .copyright-item {
        width: 150px;
        height: 110px;
    }
}

/* ============================================
   图片预览模态框样式
   ============================================ */
.image-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99999;
    justify-content: center;
    align-items: center;
}

.image-modal.active {
    display: flex;
}

.image-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.image-modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.image-modal-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.image-modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    color: #333;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.image-modal-close:hover {
    background: white;
    transform: scale(1.1);
}

.image-modal-close svg {
    width: 18px;
    height: 18px;
}

/* 图片可点击提示 */
.slider-item img {
    cursor: zoom-in;
}

/* ============================================
   联系我们页样式
   ============================================ */

.contact-wrapper { 
    padding: 40px 0;
    background: linear-gradient(135deg, #f5f8ff 0%, #ffffff 100%);
}

.contact-container {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 0;
    max-width: 1000px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.contact-sidebar {
    background: linear-gradient(180deg, #f0f5ff 0%, #e6f0ff 100%);
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    min-height: 500px;
}

.sidebar-logo {
    margin-bottom: 32px;
}

.sidebar-logo-img {
    width: 120px;
    height: auto;
}

.sidebar-qr-section {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 32px;
}

.qr-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.qr-code {
    width: 100px;
    height: 100px;
    background: #ffffff;
    border-radius: 10px;
    padding: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 6px;
}

.qr-item p {
    font-size: 12px;
    color: #666666;
    margin: 0;
    text-align: center;
}

.sidebar-contact {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 24px;
    width: 100%;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: #333333;
    font-size: 14px;
    line-height: 1.6;
    word-break: break-word;
}

.contact-item svg {
    color: #1a73e8;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 1px;
}

.contact-item span {
    font-size: 14px !important;
    color: #333333 !important;
    line-height: 1.6;
}

.sidebar-decoration {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 150px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 150'%3E%3Cpath fill='%231a73e8' fill-opacity='0.05' d='M0,50 Q50,0 100,50 T200,50 V150 H0 Z'/%3E%3Cpath fill='%231a73e8' fill-opacity='0.03' d='M0,100 Q50,50 100,100 T200,100 V150 H0 Z'/%3E%3C/svg%3E") no-repeat bottom;
    background-size: cover;
}

.contact-form-area {
    padding: 48px 40px;
}

.form-heading {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.form-description {
    font-size: 14px;
    color: #666666;
    margin-bottom: 24px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: 14px;
    color: #333333;
    font-weight: 500;
}

.required-mark {
    color: #dc3545;
    margin-right: 4px;
}

.form-input,
.form-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    background: #ffffff;
    transition: all 0.2s ease;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: #1a73e8;
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.1);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.form-group-row {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.form-group-flex {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.btn-captcha {
    padding: 12px 24px;
    background: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    color: #333333;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-captcha:hover {
    background: #f5f5f5;
    border-color: #d0d0d0;
}

.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    background: #ffffff;
    resize: vertical;
    min-height: 100px;
    transition: all 0.2s ease;
}

.form-textarea:focus {
    outline: none;
    border-color: #1a73e8;
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.1);
}

.form-group-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
}

.form-checkbox {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.form-checkbox-label {
    font-size: 13px;
    color: #666666;
    cursor: pointer;
}

.link-text {
    color: #1a73e8;
    text-decoration: none;
}

.link-text:hover {
    text-decoration: underline;
}

.btn-submit {
    margin-top: 8px;
    padding: 14px;
    background: #1a73e8;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    color: #ffffff;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-submit:hover {
    background: #1557b0;
}

.btn-submit:active {
    transform: scale(0.98);
}

.submit-btn {
    width: 100%;
    margin-top: 8px;
}

/* ============================================
   查看更多动态页样式 - 左侧时间轴 + 右侧文章
   ============================================ */

.news-list-section {
    padding: 60px 0 100px;
    background: var(--bg-white);
}

.news-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 48px;
    align-items: start;
}

/* 左侧时间轴目录 */
.news-sidebar {
    position: sticky;
    top: calc(var(--nav-height) + 40px);
    height: fit-content;
}

.news-timeline-nav {
    position: relative;
    padding-left: 8px;
}

.news-timeline-nav::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-light), var(--primary));
    border-radius: 1px;
}

.news-timeline-item {
    position: relative;
    padding-left: 36px;
    padding-bottom: 6px;
    margin-bottom: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.news-timeline-item::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 8px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--text-light);
    box-shadow: 0 0 0 2px white;
    transition: var(--transition);
    z-index: 1;
}

.news-timeline-item:hover::before {
    border-color: var(--primary);
}

.news-timeline-item.active::before {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.news-timeline-item .news-timeline-date {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 2px;
    transition: var(--transition);
}

.news-timeline-item.active .news-timeline-date {
    color: var(--primary);
}

.news-timeline-item .news-timeline-title {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--transition);
}

.news-timeline-item:hover .news-timeline-title,
.news-timeline-item.active .news-timeline-title {
    color: var(--text-primary);
    font-weight: 500;
}

/* 右侧内容面板 */
.news-content-panel {
    display: none;
    animation: fadeIn 0.35s ease;
}

.news-content-panel.active { display: block; }

.news-article {
    padding: 0 8px;
}

.news-article-header {
    margin-bottom: 28px;
}

.news-article-header .news-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-xl);
    margin-bottom: 12px;
}

.news-article-header h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.news-article-header .news-article-date {
    font-size: 14px;
    color: var(--text-light);
}

.news-article-body {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.news-article-body p {
    margin-bottom: 14px;
}

.news-article-image {
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 24px;
    height: 300px;
    display: flex;
    align-items: center;
}

.news-article-image img {
    height: 100%;
    width: auto;
    object-fit: contain;
}

.news-article-image .img-placeholder {
    width: 100%;
    height: 100%;
}

.news-article-image .img-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ============================================
   响应式
   ============================================ */

@media (max-width: 1024px) {
    .nav-menu { gap: 20px; }
    .footer-grid-detailed { grid-template-columns: 1fr 1fr 1fr; gap: 32px; }
    .page-title { font-size: 30px; }
    .hero-title { font-size: 40px; }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .news-list-grid { grid-template-columns: repeat(2, 1fr); }
    .product-row { grid-template-columns: 1fr; gap: 40px; margin-bottom: 60px; }
    .product-row:nth-child(even) .product-visual,
    .product-row:nth-child(even) .product-text { order: unset; }
    .product-title { font-size: 26px; }
    .solution-card { grid-template-columns: 1fr; padding: 32px; }
    .solution-title { font-size: 24px; }
    .case-card { grid-template-columns: 1fr; padding: 32px; }
	.case-layout { grid-template-columns: 220px 1fr; gap: 32px; }
    .case-sidebar { top: calc(var(--nav-height) + 24px); }
    .case-details { grid-template-columns: 1fr; }
    .case-title { font-size: 22px; }
    .case-article-header h2 { font-size: 24px; }
    .news-layout { grid-template-columns: 240px 1fr; gap: 32px; }
    .news-sidebar { top: calc(var(--nav-height) + 24px); }
    .about-section { padding: 40px 24px; }
    .team-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
    .nav-menu { gap: 16px; }
    .nav-link { font-size: 13px; }
    .products-section { padding: 24px 24px 60px; }
    .product-visual { min-height: 240px; }
}

@media (max-width: 768px) {
    :root { --nav-height: 56px; }

    .nav-center {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0; right: 0;
        background: white;
        padding: 16px 24px;
        box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    }

    .nav-center.mobile-open { display: block; }
    .nav-center .nav-menu { flex-direction: column; gap: 12px; }
    .nav-right .btn-primary { display: none; }
    .mobile-menu-btn { display: flex; }
    .section-title { font-size: 26px; }
    .footer-grid-detailed { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-contact-inline { flex-direction: column; gap: 8px; }
    .page-hero { padding: 100px 0 40px; min-height: 240px; }
    .page-title { font-size: 26px; }
    .hero-section { height: auto; min-height: 600px; padding: 120px 0 80px; }
    .hero-title { font-size: 32px; }
    .hero-subtitle { font-size: 16px; }
    .news-grid { grid-template-columns: 1fr; }
    .news-list-grid { grid-template-columns: 1fr; }
    .news-image { height: 180px; }
    .news-list-card .news-image { height: 220px; }
    .client-track { animation-duration: 20s; }
    .client-section { padding: 16px 0; }
    .product-row { grid-template-columns: 1fr; gap: 24px; }
    .product-row:nth-child(even) .product-visual,
    .product-row:nth-child(even) .product-text { order: unset; }
    .product-visual { min-height: 240px; }
    .solution-tabs { gap: 6px; }
    .case-layout { grid-template-columns: 1fr; }
    .case-sidebar { position: relative; top: 0; display: flex; gap: 8px; overflow-x: auto; padding: 12px; border-radius: var(--radius-md); margin-bottom: 8px; }
    .case-nav-item { white-space: nowrap; border-left: none; border-bottom: 3px solid transparent; padding: 8px 14px; font-size: 13px; }
    .case-nav-item.active { border-bottom-color: var(--primary); border-left-color: transparent; }
    .case-metrics { gap: 20px; flex-wrap: wrap; }
    .news-layout { grid-template-columns: 1fr; }
    .news-sidebar { position: relative; top: 0; margin-bottom: 24px; }
    .news-timeline-nav { display: flex; gap: 16px; overflow-x: auto; padding-bottom: 8px; }
    .news-timeline-nav::before { display: none; }
    .news-timeline-item { padding-left: 20px; padding-bottom: 0; margin-bottom: 0; white-space: nowrap; }
    .news-timeline-item::before { left: 0; top: 2px; }
    .news-timeline-item .news-timeline-title { display: none; }
    .tab-btn { padding: 8px 16px; font-size: 13px; }
    .solution-card { padding: 24px; }
    .case-card { padding: 24px; gap: 32px; }
    .case-metrics { gap: 20px; flex-wrap: wrap; }
    .timeline::before { left: 16px; }
    .timeline-item { width: 100%; padding: 0 0 32px 44px; text-align: left; }
    .timeline-item:nth-child(even) { margin-left: 0; padding: 0 0 32px 44px; text-align: left; }
    .timeline-item::after { left: 9px !important; right: auto !important; }
    .team-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .contact-info, .contact-form { padding: 28px; }
    .qr-section { flex-direction: column; align-items: center; }
    .info-actions { flex-direction: column; }
}