/* === 全局重置 === */
* { margin:0; padding:0; box-sizing:border-box; }
body { font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif; background-color:#f8fafc; background-image:linear-gradient(to right,rgba(37,99,235,0.05) 1px,transparent 1px),linear-gradient(to bottom,rgba(37,99,235,0.05) 1px,transparent 1px); background-size:40px 40px; }
a,a:link,a:visited,a:hover,a:active { text-decoration:none !important; }

/* === HEADER === */
.header {
    width:100%; height:70px;
    background:#fff;
    position:fixed; top:0; left:0; z-index:9999;
    transition:all 0.3s ease;
    box-shadow:0 1px 8px rgba(0,0,0,0.04);
}
.header.scrolled { background:#fff !important; box-shadow:0 2px 8px rgba(0,0,0,0.06); }
.header-container {
    width:92%; max-width:1280px; height:100%;
    margin:0 auto; display:flex; align-items:center;
}
@media (min-width:769px) { .header-container { margin: 0 auto; padding-left: 0; } }
.logo { font-size:24px; font-weight:bold; color:#1e40af; }
@media (min-width:769px) { .logo { margin-right: 48px; } }

/* === 桌面 NAV === */
.nav { display:flex; gap:20px; align-items:center; }
@media (min-width:769px) { .nav { height:100%; } }

.header-btns { margin-left: auto; }

.nav-item { position:relative; display:flex; align-items:center; }
@media (min-width:769px) { .nav-item { height:100%; } }

.nav-item .menu-txt {
    color:#333; font-size:14px; cursor:pointer;
    position:relative; display:inline-flex; align-items:center; gap:4px;
}
@media (min-width:769px) { .nav-item .menu-txt { height:100%; } }
.nav-item .menu-txt:hover { color:#2563eb; }
.nav-item .menu-txt::after {
    content:""; position:absolute; left:0; bottom:0;
    width:0; height:2px; background:#2563eb; transition:width 0.3s;
}
.nav-item:hover .menu-txt::after { width:100%; }

/* 箭头：用SVG inline替代外链图片，避免额外HTTP请求 */
.nav-arrow {
    width:12px; height:7px; display:inline-block;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 10'%3E%3Cpath d='M1 1l8 8 8-8' stroke='%23666' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat:no-repeat; background-size:100% 100%;
    transition:transform 0.3s;
}
.nav-item:hover .nav-arrow { transform:rotate(180deg); }
.nav-arrow.active { transform:rotate(180deg); }

/* === 下拉菜单（桌面） === */
.dropdown-menu {
    position:absolute; top:100%; left:0;
    background:#fff; box-shadow:0 4px 12px rgba(0,0,0,0.1);
    display:none; border-radius:0 0 8px 8px; z-index:9999;
}
.dropdown-menu--product { width:640px; padding:14px; grid-template-columns:repeat(2,1fr); gap:10px; }
.dropdown-item {
    display:flex; align-items:center; gap:10px;
    padding:8px 10px; border-radius:6px; transition:background 0.2s;
}
.dropdown-item:hover { background:#f8fafc; }
.dropdown-item-icon {
    width:44px; height:44px; border-radius:6px;
    display:flex; align-items:center; justify-content:center;
    background:rgba(37,99,235,0.1); color:#2563eb; font-size:18px;
}
.dropdown-item-content h4 { font-size:15px; color:#1e293b; margin-bottom:2px; font-weight:normal; }
.dropdown-item-content p { font-size:13px; color:#64748b; }

/* === 解决方案 下拉（卡片式） === */
.dropdown-menu--solution2 { width:600px; padding:16px; grid-template-columns:repeat(2,1fr); gap:10px; }
.solution2-item {
    display:flex; align-items:flex-start; gap:12px;
    padding:12px 14px; border-radius:8px; transition:all 0.2s;
}
.solution2-item:hover { background:#f0f5ff; }
.solution2-item-icon {
    width:44px; height:44px; border-radius:8px; flex-shrink:0;
    display:flex; align-items:center; justify-content:center;
    background:rgba(37,99,235,0.1); color:#2563eb; font-size:20px;
}
.solution2-item-content h4 { font-size:15px; color:#1e293b; margin-bottom:4px; font-weight:normal; }
.solution2-item-content p { font-size:12px; color:#64748b; line-height:1.4; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }

.nav-item:hover .dropdown-menu { display:grid; }

/* === 普通导航链接 === */
.nav-normal { color:#333; font-size:14px; position:relative; display:inline-flex; align-items:center; }
@media (min-width:769px) { .nav-normal { height:100%; } }
.nav-normal:hover { color:#2563eb; }
.nav-normal::after {
    content:""; position:absolute; left:0; bottom:0;
    width:0; height:2px; background:#2563eb; transition:width 0.3s;
}
.nav-normal:hover::after,
.nav-normal.active::after,
.nav-normal.is-active::after { width:100%; }

/* === 登录/注册按钮 === */
.header-btns { display:flex; gap:12px; align-items:center; }
@media (min-width:769px) { .header-btns { position: relative; right: -40px; } }
.btn-login, .btn-register { padding:8px 18px; border-radius:4px; font-size:15px; }
.btn-login { border:1px solid #2563eb; color:#2563eb; background:transparent; }
.btn-register { background:#2563eb; color:#fff; border:none; }
.btn-login:hover { background:#eff6ff; }
.btn-register:hover { background:#1d4ed8; }

/* === 汉堡按钮 === */
.menu-btn { display:none; font-size:26px; background:none; border:none; cursor:pointer; }

/* === 移动端 === */
@media (max-width:768px) {
    #nav {
        display:none; position:absolute; top:70px; left:0;
        width:100%; background:#fff; flex-direction:column;
        padding:0; margin:0; gap:0 !important;
        box-shadow:0 8px 24px rgba(0,0,0,0.12);
        height:auto; max-height:calc(100vh - 70px);
        overflow-y:auto; border-top:2px solid #e5e7eb; align-items:stretch;
    }
    #nav.active { display:flex; }

    #nav .nav-item {
        position:static; height:auto; min-height:0;
        width:100%; display:flex; flex-direction:column; align-items:stretch; flex-shrink:0;
    }
    #nav .nav-item .menu-txt {
        display:flex !important; align-items:center !important;
        justify-content:space-between !important; padding:0 20px !important;
        height:48px !important; min-height:48px !important; max-height:48px !important;
        width:100% !important; font-size:15px !important; font-weight:500 !important;
        color:#1e293b !important; border-bottom:1px solid #f3f4f6 !important;
        box-sizing:border-box !important; background:transparent !important; cursor:pointer;
    }
    #nav .nav-item .menu-txt:hover { background:#f0f6ff !important; color:#2563eb !important; }
    #nav .nav-item .menu-txt::after { display:none !important; }

    #nav > .nav-normal {
        display:flex !important; align-items:center !important;
        padding:0 20px !important; height:48px !important;
        min-height:48px !important; max-height:48px !important;
        width:100% !important; font-size:15px !important; font-weight:500 !important;
        color:#1e293b !important; border-bottom:1px solid #f3f4f6 !important;
        box-sizing:border-box !important; flex-shrink:0 !important;
    }
    #nav > .nav-normal:hover { background:#f0f6ff !important; color:#2563eb !important; }
    #nav > .nav-normal::after { display:none !important; }

    /* 子菜单容器 */
    #nav .dropdown-menu {
        position:static !important; display:none !important;
        width:100% !important; box-shadow:none !important;
        border-radius:0 !important; padding:0 !important;
        background:#f8fafc !important; border-bottom:1px solid #e5e7eb !important;
        height:auto !important;
    }
    #nav .dropdown-menu.active { display:block !important; }

    /* 产品子项 */
    #nav .dropdown-item {
        display:flex !important; align-items:center !important;
        gap:12px !important; padding:0 20px 0 36px !important;
        height:44px !important; border-bottom:1px solid #eef2f7 !important;
        width:100% !important; box-sizing:border-box !important;
        background:transparent !important;
    }
    #nav .dropdown-item:hover { background:#eff6ff !important; }
    #nav .dropdown-item-icon {
        display:flex !important; width:28px !important; height:28px !important;
        min-width:28px !important; border-radius:6px !important;
        font-size:13px !important; align-items:center !important; justify-content:center !important;
    }
    #nav .dropdown-item-content p { display:none !important; }
    #nav .dropdown-item-content h4 {
        font-size:14px !important; font-weight:500 !important;
        margin:0 !important; color:#374151 !important;
    }

    /* 解决方案分组 — 与产品子项背景、尺寸完全一致 */
    #nav .solution-column { display:block !important; }
    #nav .solution-column-header {
        display:flex !important; align-items:center !important;
        gap:12px !important; height:44px !important;
        padding:0 20px 0 36px !important;
        background:transparent !important;
        border-top:1px solid #eef2f7 !important;
        border-bottom:none !important; margin:0 !important;
        box-sizing:border-box !important;
    }
    /* 解决方案 移动端 */
    #nav .solution2-item {
        display:flex !important; align-items:center !important;
        gap:12px !important; padding:0 20px 0 36px !important;
        height:44px !important; border-bottom:1px solid #eef2f7 !important;
        width:100% !important; box-sizing:border-box !important;
        background:transparent !important;
    }
    #nav .solution2-item:hover { background:#eff6ff !important; }
    #nav .solution2-item-icon {
        display:flex !important; width:28px !important; height:28px !important;
        min-width:28px !important; border-radius:6px !important;
        font-size:13px !important; align-items:center !important; justify-content:center !important;
        background:rgba(37,99,235,0.1) !important; color:#2563eb !important;
    }
    #nav .solution2-item-content p { display:none !important; }
    #nav .solution2-item-content h4 {
        font-size:14px !important; font-weight:500 !important;
        margin:0 !important; color:#374151 !important;
    }

    .header-btns { display:none !important; }
    .menu-btn {
        display:flex !important; align-items:center; justify-content:center;
        margin-left:auto; padding:0 16px; font-size:24px; color:#1e40af; background:none; border:none;
    }
    .logo img { height: 38px !important; }
}

/* === 轮播 Banner === */
.banner-section {
    position:relative; width:100%; overflow:hidden;
    margin-top:0;
}
.carousel-wrapper { position:relative; z-index:2; width:100%; display:flex; flex-direction:column; }
.carousel-container { position:relative; width:100%; overflow:hidden; height:480px; }
.carousel-track { display:flex; transition:transform 0.8s cubic-bezier(0.25,0.1,0.25,1); height:100%; }
.carousel-slide {
    min-width:100%; padding:30px 8% 20px; height:480px;
    display:flex; align-items:center; filter:brightness(1.2);
    justify-content: space-between; position: relative; overflow: hidden;
}
.banner-video {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 1; overflow: hidden; display: none;
}
.banner-video video {
    width: 100%; height: 100%; object-fit: cover;
}
.content-area { z-index:10; width: fit-content; background: rgba(255,255,255,0.35); backdrop-filter: blur(6px); padding: 20px 28px; border-radius: 12px; }
.content-area--nobox { background: none !important; backdrop-filter: none !important; padding: 0 !important; border-radius: 0 !important; }
.slide-title { font-size:44px; font-weight:700; line-height:1.3; color:#111827; margin-bottom:12px; white-space: normal; }
.text-gradient {
    background:linear-gradient(90deg,#1e40af 0%,#3b82f6 100%);
    -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
}
.slide-desc { font-size:20px; color:#374151; line-height:1.6; margin-bottom:20px; }

.slide-visual {
    width: 240px; height: 240px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    position: relative; z-index: 1; margin-top: 75px;
}
.slide-visual img {
    width: 100%; height: 100%; object-fit: contain;
}
.slide-visual--center {
    width: 380px; height: 380px; margin: 0 auto;
}
.btn-primary {
    display:inline-block; padding:12px 32px; background:#2563eb;
    color:#fff; border:none; border-radius:4px; font-size:16px;
    font-weight:500; transition:background 0.3s ease;
}
.btn-primary:hover { background:#1d4ed8; }

/* === Tab导航 === */
.global-tab-nav {
    position:relative; z-index:9999; max-width:800px;
    margin:-50px auto 40px 8%; display:flex; gap:24px;
    padding:0; border-bottom:1px solid rgba(0,0,0,0.1);
    overflow-x:auto; scrollbar-width:none;
}
.global-tab-nav::-webkit-scrollbar { display:none; }
.global-tab-item {
    font-size:16px; color:#6b7280; cursor:pointer;
    position:relative; padding:0 0 8px; white-space:nowrap; flex-shrink:0;
}
.global-tab-item::after {
    content:""; position:absolute; left:0; bottom:-1px;
    width:0; height:2px; background:#1e293b; transition:width 0.3s;
}
.global-tab-item.active { color:#1e293b; font-weight:600; }
.global-tab-item.active::after { width:100%; }

/* === Info Bar === */
.info-bar-wrapper {
    position:relative; width:100%; background:rgba(255,255,250,0.45);
    backdrop-filter:blur(6px);
}
.info-bar-wrapper::before {
    content:''; position:absolute; left:0; top:0; width:100%; height:100%;
    background-color:rgba(255,255,255,0.35); z-index:1; pointer-events:none;
}
.info-bar {
    display:flex; justify-content:center; max-width:1400px;
    margin:0 auto; padding:0 5px; min-height:80px; align-items:center; gap:100px;
}
.info-card {
    display:flex; align-items:center; gap:14px; text-align:left;
    padding:12px 16px; transition:all 0.3s ease; cursor:pointer;
    border:2px solid transparent; border-radius:6px; height:80px;
}
.info-card:hover { background-color:#fff; border-color:#fff; box-shadow:0 4px 14px rgba(0,0,0,0.1); }
.info-card-icon { font-size:26px; color:#2563eb; flex-shrink:0; }
.info-card-title { font-size:16px; font-weight:600; color:#111827; margin-bottom:4px; }
.info-card-desc { font-size:12px; color:#6b7280; }

/* === AI能力模块样式 === */
.ai-section {
    padding: 40px 20px;
    background: #fff;
    width: 100%;
}
.ai-section .ai-cards-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 28px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 30px;
}

.ai-cards-container {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    max-width: 100%;
    margin: 0 auto;
}

.ai-card {
    flex: 1 1 0;
    min-width: 0;
    border: none;
    border-radius: 8px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    cursor: pointer;
}

.ai-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.card1, .card2, .card3, .card4 {
    background: #f4f7ff;
}

.ai-card-tag {
    display: inline-block;
    font-size: 12px;
    line-height: 1.2;
    padding: 3px 7px;
    border-radius: 4px;
    margin-bottom: 14px;
    width: fit-content;
    white-space: nowrap;
}
.tag-agent {
    background: #eef4ff;
    color: #2f54eb;
}
.tag-app {
    background: #f0fdf4;
    color: #009c7d;
}

.ai-card-title {
    font-size: 20px;
    font-weight: 600;
    color: #111;
    margin-bottom: 14px;
}

.card-desc {
    font-size: 14px;
    color: #555;
    line-height: 1.5;
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.experience-btn {
    display: inline-block;
    width: fit-content;
    padding: 5px 10px;
    background: #69b1ff;
    color: #fff;
    font-size: 13px;
    border-radius: 5px;
    text-decoration: none;
    margin-bottom: 22px;
    transition: background 0.3s ease;
}

.experience-btn:hover {
    background: #4096ff;
}

.card-img {
    width: 100%;
    height: 180px;
    border-radius: 6px;
    overflow: hidden;
}
.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* === 移动端适配 AI模块 1行2列 === */
@media (max-width:768px) {
    .info-bar-wrapper::before { display:none; }
    .carousel-slide { padding:20px 20px 10px; }
    .slide-title { font-size:26px; white-space:normal; }
    .slide-desc { font-size:16px; }
    .global-tab-nav { margin:-10px 20px 10px; gap:16px; }
    .global-tab-item { font-size:13px; }
    .global-tab-item:nth-child(6) { display:none; }
    .info-bar { display:grid; grid-template-columns:repeat(2,1fr); gap:8px; padding:10px 12px 12px; min-height:auto; }
    .info-card { background:rgba(255,255,255,0.55); backdrop-filter:blur(4px); border-radius:6px; padding:14px 8px; text-align:center; display:flex; align-items:center; justify-content:center; height:52px !important; border:none !important; box-sizing:border-box; }
    .info-card-icon { display:none; }
    .info-card-title { font-size:12px; font-weight:400; color:#555; margin-bottom:0; line-height:1; }
    .info-card-desc { display:none; }
    .banner-section { padding-bottom:0; padding-top:70px; }
    .carousel-container { height:320px; }
    .carousel-slide { height:320px; }
    .slide-visual { display: none !important; }
    .content-area { background: none !important; backdrop-filter: none !important; padding: 0 !important; border-radius: 0 !important; }
    
    .ai-section { padding: 30px 12px; }
    .section-title {
        font-size: 22px;
        margin-bottom: 20px;
    }
    .ai-cards-container {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .ai-card {
        width: 100%;
        padding: 16px;
        border-radius: 8px;
    }
    .card-img {
        height: 120px;
        border-radius: 6px;
    }
    .experience-btn { display: none !important; }
}

/* ====================== 大模型聚合平台模块 ====================== */
.model-platform-wrapper {
    max-width: 1400px;
    margin: 40px auto;
    padding: 0 20px;
}

.platform-main-title {
    font-size: 24px;
    color: #111827;
    margin-bottom: 24px;
    text-align: center;
    line-height: 1.3;
}
.platform-main-title .highlight {
    color: #2563eb;
    font-weight: 600;
}

.model-platform-section {
    display: grid;
    grid-template-columns: 30% 68%;
    gap: 24px;
    align-items: stretch;
    margin-bottom: 32px;
}

.section-left-link {
    display: block;
    text-decoration: none;
    height: 100%;
}
.section-left {
    background: #ffffff;
    border-radius: 16px;
    padding: 30px 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}
.left-visual-area {
    height: 220px;
    background: url("../images/banner-api-layer.jpg") center / cover no-repeat;
    border-radius: 12px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
    cursor: pointer;
}
.left-visual-area:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}
.left-title {
    font-size: 22px;
    color: #111827;
    font-weight: 600;
    margin-bottom: 12px;
}
.left-desc {
    font-size: 16px;
    color: #4b5563;
    line-height: 1.6;
    margin-bottom: 24px;
}
.btn-experience {
    display: inline-block;
    padding: 12px 28px;
    background: #2563eb;
    color: #ffffff;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
    text-decoration: none;
}
.btn-experience:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(37,99,235,0.3);
}

.section-right {
    display: flex;
    flex-direction: column;
    height: 100%;
}
.right-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 16px;
    flex: 1;
}

.model-card-link {
    display: block;
    text-decoration: none;
    height: 100%;
}
.model-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 22px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid #e8edff;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.model-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.15);
}
.model-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}
.model-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: #f5f8ff;
}
.model-icon img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}
.model-name {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a2e;
    margin: 0;
}
.model-tag {
    font-size: 12px;
    color: #4f46e5;
    background: rgba(79, 70, 229, 0.1);
    padding: 3px 10px;
    border-radius: 12px;
    margin-left: auto;
    white-space: nowrap;
}
.model-desc {
    font-size: 15px;
    color: #555;
    line-height: 1.6;
    margin: 0;
    flex: 1;
}

.global-view-all {
    text-align: center;
}
.btn-view-all {
    display: inline-block;
    padding: 12px 36px;
    background: transparent;
    color: #9ca3af;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid #e5e7eb;
}
.btn-view-all:hover {
    background: #2563eb;
    color: #fff;
    border-color: #2563eb;
    transform: translateY(-2px);
}

@media (max-width: 900px) {
    .model-platform-section {
        grid-template-columns: 1fr;
    }
    .right-grid {
        grid-template-columns: 1fr;
        grid-template-rows: unset;
    }
    .left-title {
        white-space: normal;
        font-size: 20px;
    }
    .left-visual-area {
        height: 180px;
    }
}

/* ====================== SaaS 产品模块 ====================== */
.saas-section {
    margin: 0;
    padding: 60px 90px;
    background: #f8faff url('../images/saas-bg.png') no-repeat center center;
    background-size: cover;
    display: flex; flex-direction: column; align-items: center;
    position: relative;
}
.saas-inner {
    width: 100%;
    max-width: 1400px;
}
.section-header {
    text-align: center;
    margin-bottom: 40px;
}
.section-header h1 {
    font-size: 32px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}
.section-header p {
    font-size: 16px;
    color: #888;
}
.cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}
.product-card {
    background: #ffffff;
    border-radius: 8px;
    padding: 30px 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.08);
}
.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}
.card-icon {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    opacity: 0.85;
}
.card-title-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
}
.m-sub { display: none; }
.icon-shop { background-color: #f66; }
.icon-mini { background-color: #fa9; }
.icon-site { background-color: #5cc; }
.icon-knowledge { background-color: #6cf; }
.icon-store { background-color: #5d5; }
.icon-live { background-color: #59f; }
.icon-screen { background-color: #f66; }
.icon-wechat { background-color: #a6f; }
.icon-recruit { background-color: #4ade80; }
.icon-cloudshop { background-color: #60a5fa; }
.icon-groupbuy { background-color: #f59e0b; }
.icon-aiwebsite { background-color: #a78bfa; }
.card-icon svg {
    width: 18px;
    height: 18px;
    fill: #fff;
}
.card-title {
    font-size: 20px;
    font-weight: 600;
    color: #111;
    line-height: 1.2;
}
.card-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 20px;
    font-size: 12px;
    padding: 0 6px;
    border-radius: 3px;
    background: transparent;
    border: 1px solid;
    line-height: 1;
    flex-shrink: 0;
}
.tag-shop { color: #1677ff; border-color: #1677ff; }
.tag-mini { color: #52c41a; border-color: #52c41a; }
.tag-site { color: #faad14; border-color: #faad14; }
.tag-knowledge { color: #f5222d; border-color: #f5222d; }
.tag-store { color: #faad14; border-color: #faad14; }
.tag-live { color: #f5222d; border-color: #f5222d; }
.tag-screen { color: #52c41a; border-color: #52c41a; }
.tag-wechat { color: #1677ff; border-color: #1677ff; }
.tag-recruit { color: #52c41a; border-color: #52c41a; }
.tag-cloudshop { color: #1677ff; border-color: #1677ff; }
.tag-groupbuy { color: #faad14; border-color: #faad14; }
.tag-aiwebsite { color: #a78bfa; border-color: #a78bfa; }
.card-divider {
    width: 100%;
    height: 1px;
    background: #e5e5e5;
    margin: 14px 0;
}
.card-subtitle {
    font-size: 16px;
    color: #555;
    margin-bottom: 12px;
    font-weight: 500;
}
.card-desc {
    font-size: 14px;
    color: #777;
    line-height: 1.7;
}
.consult-btn {
    display: inline-block;
    padding: 14px 60px;
    background: #fff;
    color: #999;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s;
}
.consult-btn:hover {
    background: #f5f5f5;
    color: #666;
    border-color: #bbb;
}
@media (max-width: 1200px) {
    .saas-section { padding: 60px 40px; }
    .cards-grid { gap: 16px; }
}
@media (max-width: 992px) {
    .saas-section { padding: 40px 20px; }
    .cards-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
}
@media (max-width: 768px) {
    .saas-section {
        margin: 0;
        padding: 30px 12px;
background: #e8f0fe;
        box-sizing: border-box;
        width: 100%;
        overflow: hidden;
    }
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        width: 100%;
    }
    .product-card {
        padding: 12px 10px;
        border-radius: 8px;
        box-sizing: border-box;
        overflow: hidden;
        min-width: 0;
    }
    .card-icon {
        width: 36px;
        height: 36px;
        opacity: 1;
        border-radius: 8px;
        flex-shrink: 0;
    }
    .card-icon svg {
        width: 20px;
        height: 20px;
    }
    .card-header {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 0;
    }
    .card-title-wrap {
        display: flex !important;
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: 3px !important;
    }
    .card-title {
        font-size: 15px;
        font-weight: bold;
        color: #222;
        line-height: 1.2;
    }
    .card-tag {
        display: none !important;
    }
    .m-sub {
        display: block !important;
        font-size: 12px;
        color: #999;
        font-weight: 400;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 100%;
    }
    .card-divider,
    .card-subtitle,
    .card-desc {
        display: none !important;
    }
    .product-card {
        padding: 14px 12px;
    }
}

/* ====================== 服务保障模块 ====================== */
.service-section {
    background-color: #ffffff;
    padding: 50px 0;
    position: relative;
    overflow: hidden;
}
.service-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    position: relative;
    z-index: 1;
}

.service-section::before,
.service-section::after,
.bg-decoration-1,
.bg-decoration-2,
.bg-decoration-3 {
    content: "";
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(102, 179, 255, 0.25) 0%, rgba(255, 255, 255, 0) 70%);
    z-index: 0;
}

.service-section::before {
    width: 120px;
    height: 120px;
    top: 30px;
    left: 30px;
}

.service-section::after {
    width: 180px;
    height: 180px;
    top: 50px;
    left: 60px;
    opacity: 0.6;
}

.bg-decoration-1 {
    width: 150px;
    height: 150px;
    top: 100px;
    right: 20px;
    opacity: 0.4;
}

.bg-decoration-2 {
    width: 120px;
    height: 120px;
    bottom: 80px;
    right: 50px;
    opacity: 0.5;
}

.bg-decoration-3 {
    width: 80px;
    height: 80px;
    top: -20px;
    right: 40%;
    opacity: 0.3;
}

.service-header {
    text-align: center;
    margin-bottom: 32px;
}

.service-header h2 {
    font-size: 28px;
    color: #1a1a1a;
    margin-bottom: 10px;
    font-weight: 600;
}

.service-header p {
    font-size: 15px;
    color: #999999;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    position: relative;
}

.service-card {
    background: #ffffff;
    border-radius: 10px;
    padding: 24px 18px;
    text-align: center;
    border: 1px solid #f0f0f0;
    transition: all 0.3s ease;
}

.service-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    transform: translateY(-4px);
}

.service-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.service-card h3 {
    font-size: 17px;
    color: #333;
    margin-bottom: 8px;
    font-weight: 500;
}

.service-card p {
    font-size: 14px;
    color: #777;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .service-inner { padding: 0 16px; }
}
@media (max-width: 576px) {
    .service-section {
        padding: 30px 4px;
    }

    .service-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px 4px;
        max-width: 100%;
    }

    .service-card {
        padding: 0;
        border: none !important;
        background: transparent !important;
        box-shadow: none !important;
    }

    .service-icon {
        width: 44px;
        height: 44px;
        margin: 0 auto 8px;
    }

    .service-card h3 {
        font-size: 13px;
        color: #666;
        margin-bottom: 0;
        font-weight: 500;
    }

    .service-card p {
        display: none;
    }
}

/* ====================== 常见问题 FAQ ====================== */
.faq-section {
    background-image: url(../images/bg5.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 80px 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.faq-wrapper {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 40px;
}
.faq-header {
    text-align: center;
    margin-bottom: 28px;
}
.faq-header h1 {
    font-size: 26px;
    color: #1f2937;
    margin-bottom: 8px;
}
.faq-header h1 span {
    color: #007bff;
}
.faq-header p {
    font-size: 15px;
    color: #6b7280;
}
.faq-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 28px;
}
.faq-tab-item {
    padding: 12px 50px;
    font-size: 15px;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
}
.faq-tab-item.active {
    background-color: #007bff;
    color: #fff;
    border-radius: 4px;
}
.faq-tab-item:not(.active) {
    background-color: #fff;
    color: #333;
    border-radius: 4px;
}
.faq-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}
.faq-item {
    display: flex;
    min-width: 0;
    background-color: #fff;
    border-radius: 4px;
    overflow: hidden;
    transition: all 0.3s;
    cursor: pointer;
    text-decoration: none;
}
.faq-item:hover {
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.15);
    transform: translateY(-2px);
}
.faq-item:hover .faq-number {
    background-color: #007bff;
    color: #fff;
}
.faq-number {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 70px;
    background-color: #fff;
    color: #9ca3af;
    padding: 14px 8px;
    transition: all 0.3s;
    border-right: 1px solid #eee;
}
.faq-number .num {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 4px;
}
.faq-number .date {
    font-size: 12px;
}
.faq-content {
    flex: 1;
    min-width: 0;
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.faq-content h3 {
    font-size: 15px;
    color: #1f2937;
    margin-bottom: 4px;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.faq-content p {
    font-size: 13px;
    color: #9ca3af;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
}
.faq-tab-content { display: none; }
.faq-tab-content.active { display: block; }
@media (max-width: 992px) {
    .faq-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .faq-grid { grid-template-columns: 1fr; }
    .faq-tab-item { padding: 16px 40px; }
    .faq-grid .faq-item:nth-child(n+15) { display: none; }
}

.footer { background: #0f172a; color: #cbd5e1; padding: 50px 0 0; }
.footer-inner { max-width: 1400px; margin: 0 auto; padding: 0 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 50px; padding-bottom: 40px; border-bottom: 1px solid #334155; }
.footer-brand .logo-text { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; line-height: 1.7; color: #94a3b8; }
.footer-col h4 { font-size: 15px; color: #fff; margin-bottom: 14px; font-weight: 600; position: relative; padding-bottom: 8px; }
.footer-col h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 24px; height: 2px; background: #3b82f6; }
.footer-col a { display: block; font-size: 14px; color: #94a3b8; text-decoration: none; margin-bottom: 8px; transition: color 0.3s; }
.footer-col a:hover { color: #60a5fa; }
.footer-qr-row { display: flex; gap: 16px; margin-top: 8px; }
.footer-qr-item { display: flex; flex-direction: column; align-items: center; text-align: center; }
.footer-qr-item img { width: 100px; height: 100px; border-radius: 6px; background: #fff; padding: 5px; }
.footer-qr-item span { font-size: 12px; color: #94a3b8; margin-top: 6px; }
.footer-bottom { text-align: center; padding: 20px 0; font-size: 13px; color: #64748b; }
@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .footer-brand { grid-column: 1 / -1; }
    .footer-inner { padding: 0 20px; }
}