* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', sans-serif;
            background: #fefefe;
            color: #1e293b;
            scroll-behavior: smooth;
            overflow-x: hidden;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }
        .container-wide {
            max-width: 1520px;
            margin: 0 auto;
            padding: 0 32px;
        }
        /* 导航栏 */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            z-index: 1000;
            padding: 18px 0;
            transition: all 0.3s;
        }
        .nav-flex {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #1E40AF, #3B82F6);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -0.3px;
        }
        .nav-links {
            display: flex;
            gap: 2rem;
            align-items: center;
        }
        .nav-links a {
            text-decoration: none;
            color: #334155;
            font-weight: 500;
            transition: 0.2s;
        }
        .nav-links a:hover { color: #2563eb; }
        .btn-download-nav {
            background: #1e5af7;
            color: white !important;
            padding: 8px 22px;
            border-radius: 40px;
        }
        /* 按钮通用 */
        .btn-primary {
            background: #1e5af7;
            color: white;
            padding: 14px 32px;
            border-radius: 48px;
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: 0.25s;
            box-shadow: 0 8px 18px rgba(30,90,247,0.2);
        }
        .btn-primary:hover {
            background: #0f46d0;
            transform: translateY(-3px);
            box-shadow: 0 15px 25px -8px rgba(30,90,247,0.4);
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid #cbd5e1;
            color: #1e293b;
            padding: 12px 28px;
            border-radius: 48px;
            font-weight: 600;
            text-decoration: none;
            transition: 0.2s;
        }
        .btn-outline:hover {
            border-color: #1e5af7;
            background: rgba(30,90,247,0.05);
        }
        /* Hero 区域 - 左侧文案 + 右侧未来感工作台（非轮播，类钉钉沉浸式） */
        .hero {
            margin-top: 90px;
            padding: 60px 0 18px;
            background: linear-gradient(120deg, #f0f9ff 0%, #ffffff 100%);
        }
        .hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }
        .hero-left {
            flex: 1;
        }
        .global-badge {
            background: #e0e7ff;
            color: #1e40af;
            padding: 6px 16px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.85rem;
            display: inline-block;
            margin-bottom: 24px;
        }
        .hero-left h1 {
            font-size: 3.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #0f2b4d, #1e5af7);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: #475569;
            margin-bottom: 32px;
            max-width: 550px;
        }
        .btn-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        /* 右侧工作台 - 未来感 + 实用（类似钉钉工作台但更具科技感） */
        .hero-right {
            flex: 1.55;
            background: rgba(0, 0, 0, 0);
            border-radius: 48px;
        }
        .workbench-section {
            padding: 18px 0 72px;
            background: linear-gradient(180deg, #ffffff 0%, #f8fbff 60%, #ffffff 100%);
        }
        .tech-workbench {
            background: linear-gradient(145deg, #0c1126, #030617);
            border-radius: 40px;
            padding: 22px;
            box-shadow: 0 30px 40px -15px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255,255,255,0.1);
            backdrop-filter: blur(2px);
            border: 1px solid rgba(59,130,246,0.4);
            transition: all 0.3s;
            width: 100%;
            min-height: 680px;
            display: flex;
        }
        .wb-window {
            width: 100%;
            border-radius: 32px;
            background: rgba(10, 16, 36, 0.72);
            border: 1px solid rgba(148, 163, 184, 0.18);
            box-shadow: 0 22px 60px rgba(0, 0, 0, 0.45);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .wb-topbar {
            display: grid;
            grid-template-columns: 120px 1fr 120px;
            align-items: center;
            padding: 14px 16px;
            background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0));
            border-bottom: 1px solid rgba(148, 163, 184, 0.14);
        }
        .wb-dots {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .wb-dot {
            width: 10px;
            height: 10px;
            border-radius: 999px;
        }
        .wb-dot.red { background: #ff5f57; }
        .wb-dot.yellow { background: #febc2e; }
        .wb-dot.green { background: #28c840; }
        .wb-top-title {
            justify-self: center;
            font-size: 0.85rem;
            font-weight: 600;
            color: rgba(226, 232, 240, 0.88);
            letter-spacing: 0.2px;
        }
        .wb-top-actions {
            justify-self: end;
            display: flex;
            gap: 12px;
            align-items: center;
            color: rgba(148, 163, 184, 0.9);
        }
        .wb-top-actions i {
            font-size: 0.95rem;
            opacity: 0.9;
        }
        .wb-body {
            flex: 1;
            display: grid;
            grid-template-columns: 280px 1fr 260px;
            min-height: 0;
        }
        .wb-sidebar {
            display: grid;
            grid-template-columns: 64px 1fr;
            border-right: 1px solid rgba(148, 163, 184, 0.14);
            background: rgba(2, 6, 23, 0.35);
            min-height: 0;
        }
        .wb-rail {
            padding: 14px 10px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            align-items: center;
            border-right: 1px solid rgba(148, 163, 184, 0.12);
        }
        .wb-rail-btn {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            display: grid;
            place-items: center;
            color: rgba(203, 213, 225, 0.9);
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(59,130,246,0.18);
        }
        .wb-rail-btn.active {
            background: rgba(59,130,246,0.22);
            border-color: rgba(59,130,246,0.5);
            color: #e2e8f0;
        }
        .wb-list {
            padding: 14px 14px 14px 12px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            min-height: 0;
            overflow: hidden;
        }
        .wb-search {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(148, 163, 184, 0.16);
            border-radius: 14px;
            padding: 10px 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(226, 232, 240, 0.85);
            font-size: 0.85rem;
        }
        .wb-search i {
            color: rgba(148, 163, 184, 0.9);
        }
        .wb-items {
            display: flex;
            flex-direction: column;
            gap: 10px;
            overflow: hidden;
        }
        .wb-item {
            display: grid;
            grid-template-columns: 38px 1fr;
            gap: 10px;
            align-items: center;
            padding: 10px 10px;
            border-radius: 16px;
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(148, 163, 184, 0.12);
        }
        .wb-item .dot {
            width: 38px;
            height: 38px;
            border-radius: 14px;
            background: rgba(59,130,246,0.18);
            border: 1px solid rgba(59,130,246,0.35);
        }
        .wb-item .line1 {
            height: 10px;
            width: 70%;
            border-radius: 999px;
            background: rgba(226, 232, 240, 0.14);
            margin-bottom: 8px;
        }
        .wb-item .line2 {
            height: 8px;
            width: 52%;
            border-radius: 999px;
            background: rgba(226, 232, 240, 0.10);
        }
        .wb-main {
            position: relative;
            padding: 22px 22px 18px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            min-height: 0;
            overflow: hidden;
            background: radial-gradient(900px 420px at 30% 20%, rgba(59,130,246,0.22), rgba(0,0,0,0) 60%);
        }
        .wb-chat {
            flex: 1;
            min-height: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
            padding-top: 12px;
        }
        .wb-bubble {
            max-width: 78%;
            border-radius: 18px;
            padding: 14px 14px;
            border: 1px solid rgba(148, 163, 184, 0.14);
            background: rgba(255,255,255,0.05);
            color: rgba(226, 232, 240, 0.92);
            font-size: 0.9rem;
            line-height: 1.55;
        }
        .wb-bubble.user {
            align-self: flex-start;
        }
        .wb-bubble.ai {
            align-self: flex-start;
            max-width: 86%;
            background: linear-gradient(135deg, rgba(59,130,246,0.92), rgba(37,99,235,0.72));
            border-color: rgba(96, 165, 250, 0.55);
            color: #0b1020;
            font-weight: 600;
        }
        .wb-ai-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 700;
            color: rgba(15, 23, 42, 0.88);
            margin-bottom: 10px;
        }
        .wb-ai-tag i {
            color: rgba(15, 23, 42, 0.86);
        }
        .wb-speed {
            align-self: flex-start;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 14px;
            border-radius: 16px;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(148, 163, 184, 0.14);
            color: rgba(226, 232, 240, 0.9);
            font-size: 0.85rem;
        }
        .wb-speed strong {
            font-weight: 800;
            color: #e2e8f0;
        }
        .wb-right {
            padding: 18px 16px;
            border-left: 1px solid rgba(148, 163, 184, 0.14);
            background: rgba(2, 6, 23, 0.26);
            display: flex;
            flex-direction: column;
            gap: 12px;
            min-height: 0;
            overflow: hidden;
        }
        .wb-right-card {
            border-radius: 18px;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(148, 163, 184, 0.14);
            padding: 14px;
            color: rgba(226, 232, 240, 0.9);
        }
        .wb-right-title {
            font-weight: 700;
            font-size: 0.9rem;
            margin-bottom: 10px;
        }
        .wb-right-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-top: 1px solid rgba(148, 163, 184, 0.12);
        }
        .wb-right-row:first-of-type {
            border-top: 0;
            padding-top: 0;
        }
        .wb-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
        }
        .wb-chip .badge {
            width: 34px;
            height: 34px;
            border-radius: 14px;
            display: grid;
            place-items: center;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(148, 163, 184, 0.16);
            color: rgba(226, 232, 240, 0.92);
            font-weight: 800;
        }
        .wb-kpi {
            color: rgba(148, 163, 184, 0.95);
            font-weight: 700;
        }
        .wb-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(72, 187, 255, 0.25);
        }
        .wb-brand {
            font-size: 1.3rem;
            font-weight: 700;
            background: linear-gradient(120deg, #a5f0ff, #3b82f6);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .wb-icons i {
            color: #7e8bae;
            margin-left: 18px;
            font-size: 1.2rem;
            transition: 0.2s;
        }
        .wb-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-bottom: 28px;
        }
        .grid-item {
            background: rgba(255,255,255,0.05);
            backdrop-filter: blur(4px);
            border-radius: 24px;
            padding: 16px 8px;
            text-align: center;
            border: 1px solid rgba(59,130,246,0.3);
            transition: all 0.2s;
        }
        .grid-item i {
            font-size: 1.8rem;
            color: #60a5fa;
            margin-bottom: 10px;
            display: block;
        }
        .grid-item span {
            font-size: 0.75rem;
            font-weight: 500;
            color: #cbd5e6;
        }
        .chat-preview {
            background: rgba(0,0,0,0.4);
            border-radius: 28px;
            padding: 16px;
            margin-bottom: 20px;
            border: 1px solid rgba(59,130,246,0.2);
        }
        .msg-row {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .avatar {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, #2563eb, #1e40af);
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .msg-content p {
            color: #e2e8f0;
            font-size: 0.85rem;
        }
        .time {
            color: #5b6e8c;
            font-size: 0.7rem;
        }
        .wb-footer {
            display: flex;
            justify-content: space-between;
            color: #4b6e9e;
            font-size: 0.7rem;
            margin-top: 8px;
        }
        /* 其他通用区块 */
        .section {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .section-sub {
            text-align: center;
            color: #4b5565;
            margin-bottom: 56px;
        }
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 30px;
        }
        .platform-card {
            background: white;
            border-radius: 32px;
            padding: 32px 24px;
            text-align: center;
            transition: all 0.3s;
            box-shadow: 0 10px 25px -5px rgba(0,0,0,0.03);
            border: 1px solid #eef2ff;
        }
        .platform-card:hover { transform: translateY(-8px); box-shadow: 0 20px 30px -12px rgba(0,0,0,0.1); }
        .platform-icon { font-size: 3rem; margin-bottom: 20px; }
        .download-link {
            background: #f1f5f9;
            padding: 10px 24px;
            border-radius: 40px;
            text-decoration: none;
            font-weight: 600;
            color: #1e5af7;
            display: inline-block;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 32px;
            margin-top: 20px;
        }
        .feature-card {
            background: #ffffff;
            border-radius: 32px;
            padding: 32px 24px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.02);
            border: 1px solid #eef2ff;
        }
        .industry-strip {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin: 40px 0;
        }
        .industry-tag {
            background: #eff6ff;
            padding: 12px 28px;
            border-radius: 60px;
            font-weight: 500;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }
        .news-card {
            background: white;
            border-radius: 28px;
            padding: 28px;
            border: 1px solid #eef2ff;
        }
        .trust-badge {
            background: white;
            border-radius: 28px;
            padding: 36px;
            text-align: center;
            box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05);
            border: 1px solid #eef2ff;
        }
        .client-slider {
            display: flex;
            gap: 24px;
            overflow-x: auto;
            padding: 16px 4px;
        }
        .client-card {
            min-width: 280px;
            background: #f8fafc;
            border-radius: 24px;
            padding: 24px;
        }
        .faq-item {
            background: white;
            border-radius: 24px;
            margin-bottom: 18px;
            padding: 22px 28px;
            border: 1px solid #eef2ff;
        }
        footer {
            background: #0b182c;
            color: #a0b3d9;
            padding: 56px 0 32px;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px,1fr));
            gap: 40px;
        }
        .anchor {
            scroll-margin-top: 100px;
        }
        @media (max-width: 768px) {
            .hero-left h1 { font-size: 2.2rem; }
            .nav-links { display: none; }
            .container { padding: 0 20px; }
            .container-wide { padding: 0 20px; }
            .wb-grid { grid-template-columns: repeat(2,1fr); }
            .hero-right { flex: 1; }
            .tech-workbench { min-height: 480px; }
            .wb-body { grid-template-columns: 72px 1fr; }
            .wb-right { display: none; }
            .wb-sidebar { grid-template-columns: 72px 1fr; }
        }
        .guide-content {
            margin-top: 28px;
            background: white;
            border-radius: 32px;
            padding: 28px 26px;
            border: 1px solid #e6efff;
            box-shadow: 0 14px 28px -16px rgba(15, 23, 42, 0.18);
        }
        .guide-content h3 {
            font-size: 1.45rem;
            font-weight: 800;
            color: #0f172a;
            margin-bottom: 14px;
        }
        .guide-content h4 {
            font-size: 1.05rem;
            font-weight: 800;
            color: #0f172a;
            margin: 14px 0 8px;
        }
        .guide-content p {
            color: #334155;
            line-height: 1.75;
            margin: 8px 0;
        }
        .guide-content ul {
            padding-left: 18px;
            margin: 10px 0 12px;
            color: #334155;
            line-height: 1.75;
        }
        .guide-content li {
            margin: 6px 0;
        }
        .guide-content details {
            margin: 12px 0;
            border-radius: 18px;
            background: #f8fafc;
            border: 1px solid #e2e8f0;
            padding: 12px 14px;
        }
        .guide-content details[open] {
            background: #f1f5ff;
            border-color: #d7e6ff;
        }
        .guide-content summary {
            cursor: pointer;
            font-weight: 800;
            color: #1e293b;
            list-style: none;
            outline: none;
        }
        .guide-content summary::-webkit-details-marker {
            display: none;
        }
        .guide-sep {
            border: 0;
            height: 1px;
            background: #e2e8f0;
            margin: 20px 0;
        }