/* ===== 渠道投放SEM页面样式 ===== */

/* --- 1. Hero 区域 --- */
.sem-hero { padding: 80px 0 60px; background: #fafbfc; }
.sem-hero-content { display: flex; justify-content: space-between; align-items: flex-start; gap: 50px; }
.sem-hero-text { flex: 1; max-width: 500px; }

.sem-hero-badge { display: inline-block; background: #f0eeff; padding: 6px 18px; border-radius: 20px; font-size: 13px; color: #2b1ee0; margin-bottom: 20px; font-weight: 500; }
.sem-hero-title { font-size: 38px; line-height: 1.2; margin-bottom: 20px; font-weight: 700; color: #111; }
.sem-hero-desc { color: #666; margin-bottom: 30px; font-size: 15px; line-height: 1.8; }
.sem-hero-actions { display: flex; gap: 16px; }

/* 实时投放数据面板 */
.sem-dashboard-panel {
    flex: 1.2;
    background: #fff;
    border-radius: 16px;
    padding: 0;
    box-shadow: 0 8px 30px rgba(0,0,0,0.04);
    border: 1px solid #f0f0f0;
    overflow: hidden;
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.sem-dashboard-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 16px;
    display: block;
}

/* --- 2. 标准化服务流程 --- */
.sem-process-blue { padding: 80px 0; background: #fff; text-align: center; }
.sem-process-blue h2 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.sem-process-blue > .container > p { color: #888; font-size: 14px; margin-bottom: 50px; }

.sem-pb-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: left; }
.sem-pb-item { background: #fff; border-radius: 12px; padding: 24px; border: 1px solid #f0f0f0; text-align: center; }
.sem-pb-num { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; background: #2b1ee0; color: #fff; border-radius: 50%; font-weight: 700; font-size: 14px; margin-bottom: 12px; }
.sem-pb-item h4 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.sem-pb-item p { font-size: 13px; color: #888; line-height: 1.4; }

/* --- 3. 核心竞争优势 --- */
.sem-core-adv { padding: 60px 0; background: #fafbfc; text-align: center; }
.sem-core-adv h2 { font-size: 28px; font-weight: 700; margin-bottom: 10px; }
.sem-core-adv > .container > p { color: #888; font-size: 14px; margin-bottom: 50px; }

.sem-ca-grid-top { display: grid; grid-template-columns: 1.2fr 1fr; gap: 24px; margin-bottom: 24px; }
.sem-ca-left { background: #fff; border-radius: 16px; padding: 24px 30px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid #f0f0f0; }
.sem-ca-left-top { display: flex; gap: 20px; align-items: flex-start; margin-bottom: 20px; }
.sem-ca-left-top img { width: 80px; height: 60px; border-radius: 8px; flex-shrink: 0; object-fit: cover; }
.sem-ca-left-top h4 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.sem-ca-left-top p { font-size: 14px; color: #888; line-height: 1.5; }
.sem-ca-left-bottom { display: flex; gap: 20px; font-size: 12px; color: #666; }

.sem-ca-right { background: #2b1ee0; border-radius: 16px; padding: 30px; color: #fff; display: flex; flex-direction: column; justify-content: center; }
.sem-ca-right h4 { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: #fff; }
.sem-ca-right p { font-size: 14px; color: #d4d0ff; line-height: 1.6; }

.sem-ca-grid-bottom { display: grid; grid-template-columns: 1.8fr 1fr; gap: 24px; }
.sem-ca-bottom-left { background: #fff; border-radius: 16px; padding: 30px; border: 1px solid #f0f0f0; }
.sem-ca-bottom-left h4 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.sem-ca-bottom-left > p { font-size: 14px; color: #888; margin-bottom: 20px; }
.sem-ca-channels { display: flex; flex-wrap: wrap; gap: 12px; }
.sem-ca-channel { display: flex; align-items: center; gap: 8px; background: #fafbfc; padding: 8px 16px; border-radius: 20px; font-size: 13px; }
.sem-ca-channel .dot { width: 8px; height: 8px; border-radius: 50%; }
.sem-ca-channel .dot.green { background: #10b981; }
.sem-ca-channel .dot.blue { background: #2b1ee0; }
.sem-ca-channel .dot.yellow { background: #f59e0b; }
.sem-ca-channel .dot.purple { background: #8b5cf6; }
.sem-ca-channel .dot.orange { background: #f97316; }

.sem-ca-bottom-right { background: #fff; border-radius: 16px; padding: 30px; border: 1px solid #f0f0f0; display: flex; align-items: center; justify-content: center; }
.sem-node-graph { width: 100px; height: 80px; position: relative; }
.sem-node { width: 16px; height: 16px; border-radius: 50%; position: absolute; }
.sem-node.center { background: #f59e0b; top: 32px; left: 42px; }
.sem-node.n1 { background: #2b1ee0; top: 0; left: 42px; }
.sem-node.n2 { background: #6b7280; top: 32px; left: 0; }
.sem-node.n3 { background: #6b7280; top: 32px; right: 0; }
.sem-node.n4 { background: #6b7280; bottom: 0; left: 42px; }
.sem-node-graph::before { content: ''; position: absolute; width: 60%; height: 1px; background: #ddd; top: 30px; left: 20%; transform: rotate(-30deg); }
.sem-node-graph::after { content: ''; position: absolute; width: 40%; height: 1px; background: #ddd; top: 40px; right: 10%; transform: rotate(30deg); }
.sem-node-graph .line { position: absolute; background: #ddd; height: 1px; }
.sem-node-graph .line:nth-child(1) { top: 32px; left: 8px; width: 34px; transform: rotate(-45deg); }
.sem-node-graph .line:nth-child(2) { top: 32px; right: 8px; width: 34px; transform: rotate(45deg); }
.sem-node-graph .line:nth-child(3) { bottom: 40px; left: 8px; width: 34px; transform: rotate(45deg); }
.sem-node-graph .line:nth-child(4) { bottom: 40px; right: 8px; width: 34px; transform: rotate(-45deg); }

/* --- 4. 智策漏斗转化模型 --- */
.sem-funnel-model { padding: 80px 0; background: #fff; text-align: center; }
.sem-funnel-model h2 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.sem-funnel-model > .container > p { color: #888; font-size: 14px; margin-bottom: 40px; }

.sem-funnel-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 40px; align-items: start; }

.sem-funnel-diagram { position: relative; width: 100%; max-width: 300px; margin: 0 auto; }
.sem-funnel-layer { background: #f4f0ff; color: #2b1ee0; padding: 12px 0; margin: 0 auto 8px; border-radius: 8px; font-weight: 600; font-size: 14px; }
.sem-funnel-layer:nth-child(1) { width: 100%; background: #dfdaff; }
.sem-funnel-layer:nth-child(2) { width: 85%; background: #c9c2ff; }
.sem-funnel-layer:nth-child(3) { width: 70%; background: #b3aaff; }
.sem-funnel-layer:nth-child(4) { width: 55%; background: #2b1ee0; color: #fff; }

.sem-funnel-steps { text-align: left; display: flex; flex-direction: column; gap: 24px; }
.sem-fs-item { background: #fafbfc; border-radius: 12px; padding: 20px 24px; border: 1px solid #f0f0f0; }
.sem-fs-item h4 { font-size: 16px; font-weight: 600; display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.sem-fs-item h4 span { background: #f0eeff; color: #2b1ee0; padding: 2px 10px; border-radius: 12px; font-size: 12px; font-weight: 500; }
.sem-fs-item p { font-size: 14px; color: #888; line-height: 1.5; }
.sem-fs-item .en { font-size: 12px; color: #ccc; margin-left: 4px; font-weight: 400; }

/* --- 5. 自研渠道数据技术栈 --- */
.sem-tech-channel { padding: 80px 0; background: #fafbfc; text-align: center; }
.sem-tech-channel h2 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.sem-tech-channel > .container > p { color: #888; font-size: 14px; margin-bottom: 50px; }

.sem-tc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: left; }
.sem-tc-item { background: #fff; border-radius: 16px; padding: 30px; border: 1px solid #f0f0f0; transition: transform 0.2s; }
.sem-tc-item:hover { transform: translateY(-4px); box-shadow: 0 8px 20px rgba(0,0,0,0.02); }
.sem-tc-icon { background: #f8f7ff; width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 15px; }
.sem-tc-icon img { width: 24px; height: 24px; }
.sem-tc-item h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.sem-tc-item p { font-size: 13px; color: #888; line-height: 1.5; }

/* --- 6. 深耕垂直行业 --- */
.sem-industry-focus { padding: 80px 0; background: #fafbfc; text-align: center; }
.sem-industry-focus h2 { font-size: 28px; font-weight: 700; margin-bottom: 10px; }
.sem-industry-focus > .container > p { color: #888; font-size: 14px; margin-bottom: 40px; }

.sem-ind-tabs { display: flex; justify-content: center; gap: 16px; margin-bottom: 40px; flex-wrap: wrap; }
.sem-ind-tab { background: #f5f5f5; color: #333; padding: 10px 30px; border-radius: 8px; font-weight: 600; font-size: 14px; border: none; cursor: pointer; transition: all 0.3s; }
.sem-ind-tab.active { background: #2b1ee0; color: #fff; }

.sem-ind-card { background: #fff; border-radius: 16px; padding: 40px; border: 1px solid #f0f0f0; text-align: left; display: flex; gap: 40px; align-items: center; }
.sem-ind-card-text { flex: 1; }
.sem-ind-card-text h4 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.sem-ind-card-text p { font-size: 14px; color: #666; margin-bottom: 20px; line-height: 1.6; }
.sem-ind-stats { display: flex; gap: 30px; }
.sem-ind-stat-item .num { font-weight: 700; font-size: 20px; color: #2b1ee0; display: block; margin-bottom: 2px; }
.sem-ind-stat-item .lbl { font-size: 13px; color: #888; }

.sem-ind-card-chart { width: 40%; height: 100px; background: #fafbfc; border-radius: 8px; display: flex; align-items: flex-end; gap: 16px; padding: 10px; }
.sem-ic-bar { background: #2b1ee0; height: 60%; width: 20px; border-radius: 4px 4px 0 0; }
.sem-ic-bar:nth-child(2) { height: 80%; background: #e0e0e0; }

/* --- 7. FAQ --- */
.sem-faq-final { padding: 80px 0; background: #fafbfc; text-align: center; border-top: 1px solid #eee; }
.sem-faq-final h2 { font-size: 28px; font-weight: 700; margin-bottom: 10px; }
.sem-faq-final > .container > p { color: #888; font-size: 14px; margin-bottom: 40px; }

.sem-faq-list { max-width: 900px; margin: 0 auto; text-align: left; display: flex; flex-direction: column; gap: 16px; }
.sem-faq-item { background: #fff; border-radius: 12px; padding: 20px 24px; cursor: pointer; border: 1px solid #eee; transition: all 0.3s; box-shadow: 0 2px 6px rgba(0,0,0,0.02); }
.sem-faq-item:hover { border-color: #d0d0d0; }
.sem-faq-question { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; font-weight: 600; font-size: 15px; color: #1a1a1a; line-height: 1.4; }
.sem-faq-icon { color: #ccc; font-size: 16px; transition: transform 0.3s; font-weight: 300; flex-shrink: 0; margin-top: 2px; }
.sem-faq-answer { margin-top: 15px; font-size: 14px; color: #666; display: none; padding-top: 15px; border-top: 1px solid #f0f0f0; line-height: 1.7; }
.sem-faq-item.active .sem-faq-answer { display: block; }
.sem-faq-item.active .sem-faq-icon { transform: rotate(45deg); }

/* --- 8. CTA 区域 --- */
.sem-cta-section { background: #2b1ee0; margin: 0 20px 60px; border-radius: 24px; padding: 60px 40px; text-align: center; color: #fff; position: relative; }
.sem-cta-section h2 { font-size: 32px; font-weight: 700; margin-bottom: 10px; }
.sem-cta-section p { opacity: 0.8; font-size: 15px; margin-bottom: 30px; }
.sem-cta-section .btn { padding: 14px 40px; font-size: 15px; border-radius: 30px; }
.sem-cta-section .btn-primary { background: #fff; color: #2b1ee0; }
.sem-cta-section .btn-primary:hover { background: #f5f5f5; }
.sem-cta-phone { font-size: 14px; font-weight: 600; color: #fff; margin-top: 15px; display: inline-block; }

/* --- 响应式适配 --- */
@media (max-width: 992px) {
    .sem-hero-content, .sem-ca-grid-top, .sem-ca-grid-bottom, .sem-funnel-grid, .sem-ind-card { flex-direction: column; text-align: center; }
    .sem-dashboard-panel { width: 100%; }
    .sem-ca-left-top { flex-direction: column; align-items: center; }
    .sem-funnel-diagram { margin-bottom: 30px; }
    .sem-ind-card-chart { width: 100%; justify-content: center; }
    .sem-tc-grid, .sem-pb-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .sem-hero { padding: 40px 0 30px; }
    .sem-hero-title { font-size: 24px; }
    .sem-hero-desc { font-size: 13px; line-height: 1.7; }
    .sem-hero-actions { flex-direction: column; gap: 10px; }
    .sem-hero-actions .btn { width: 100%; }
    .sem-dashboard-panel { min-height: 200px; }

    .sem-process-blue { padding: 40px 0; }
    .sem-process-blue h2 { font-size: 21px; }
    .sem-pb-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
    .sem-pb-item { padding: 18px 14px; }
    .sem-pb-num { width: 32px; height: 32px; font-size: 13px; }
    .sem-pb-item h4 { font-size: 15px; }
    .sem-pb-item p { font-size: 12px; }

    .sem-core-adv { padding: 40px 0; }
    .sem-core-adv h2 { font-size: 21px; }
    .sem-ca-grid-top { grid-template-columns: 1fr; gap: 16px; }
    .sem-ca-left { padding: 22px 18px; }
    .sem-ca-left-top h4 { font-size: 16px; }
    .sem-ca-left-top p { font-size: 13px; }
    .sem-ca-right { padding: 24px 18px; }
    .sem-ca-right h4 { font-size: 16px; }
    .sem-ca-right p { font-size: 13px; }
    .sem-ca-grid-bottom { grid-template-columns: 1fr; gap: 16px; }
    .sem-ca-bottom-left { padding: 22px 18px; }
    .sem-ca-bottom-left h4 { font-size: 16px; }
    .sem-ca-channel { padding: 6px 12px; font-size: 12px; }

    .sem-funnel-model { padding: 40px 0; }
    .sem-funnel-model h2 { font-size: 21px; }
    .sem-funnel-grid { grid-template-columns: 1fr; gap: 24px; }
    .sem-funnel-layer { font-size: 13px; padding: 10px 0; }
    .sem-fs-item { padding: 16px 18px; }
    .sem-fs-item h4 { font-size: 15px; }
    .sem-fs-item p { font-size: 13px; }

    .sem-tech-channel { padding: 40px 0; }
    .sem-tech-channel h2 { font-size: 21px; }
    .sem-tc-grid { grid-template-columns: 1fr; gap: 14px; }
    .sem-tc-item { padding: 22px 18px; }
    .sem-tc-item h4 { font-size: 15px; }
    .sem-tc-item p { font-size: 12px; }

    .sem-industry-focus { padding: 40px 0; }
    .sem-industry-focus h2 { font-size: 21px; }
    .sem-ind-tab { padding: 8px 20px; font-size: 13px; }
    .sem-ind-card { padding: 20px 16px; gap: 20px; }
    .sem-ind-card-text h4 { font-size: 18px; }
    .sem-ind-card-text p { font-size: 13px; }
    .sem-ind-stats { gap: 20px; }
    .sem-ind-stat-item .num { font-size: 18px; }

    .sem-faq-final { padding: 40px 0; }
    .sem-faq-final h2 { font-size: 21px; }
    .sem-faq-item { padding: 16px 18px; }
    .sem-faq-question { font-size: 14px; }
    .sem-faq-answer { font-size: 13px; }

    .sem-cta-section { margin: 0 12px 36px; padding: 36px 18px; }
    .sem-cta-section h2 { font-size: 22px; }
    .sem-cta-section p { font-size: 13px; }
    .sem-cta-section .btn { padding: 12px 28px; font-size: 14px; }
}

@media (max-width: 480px) {
    .sem-hero-title { font-size: 22px; }
    .sem-pb-grid { grid-template-columns: 1fr; }
    .sem-cta-section h2 { font-size: 20px; }
}