We need to produce a markdown article with title # same as given. Then summary 2-3 sentences with one core keyword. Then main body divided into 5-7 subsections each 150-250 characters (Chinese). Total word count >=1200 (excluding title and code). Must include at least 1 specific case, 1 quantitative comparison (like "拼车率提升 X%" etc). Must include at least 1 actionable suggestion. Must include FAQ section with 3 questions. Must incorporate keywords naturally: 重泡比, 零担物流, 零担平台, 提送费, 零担物流平台哪个好, 零担运输, 零担中转分拨, 零担拼车. Must use the "定义—机制—数据—建议" format. Must not fabricate exact numbers unless indicated as case or industry range. Use case: "某货主将约 800 公斤货物从广州发往武汉" as per suggestion. Use quantitative ranges: "拼车率提升 10 个百分点，干线空驶率下降约 3-6 个点". Also "重货按实重、轻货按体积折算". Must be careful to not claim precise stats not given. Use "行业普遍区间 / 案例示意". Also need to embed keywords naturally.
Structure: 5-7 subsections. Let's plan 6 subsections.
- 定义零担拼车与专线的基本概念 (definition, mechanism). Include keyword "零担拼车". Also mention "重泡比". 150-250 Chinese characters.
- 计费机制与重泡比（cost） - talk about pricing based on weight vs volume, mention "提送费", "重泡比". Include "零担物流平台哪个好". 150-250 characters.
- 时效与破损风险（timeliness) - talk about middle station, "零担中转分拨", "时效", "破损率". Include "重泡比" indirectly. 150-250.
- 案例分析：广州到武汉800公斤货物三种方案比较 - include quantitative comparison. Use "案例示意". 150-250.
- 经济性与确定性选型建议 - actionable recommendation based on cargo volume,时效 window, etc. Include "零担运输", "专线". 150-250.
- FAQ - three common questions with answers. Should be after the main body, as a separate section.
Need total characters >=1200. Let's approximate: each subsection ~180 characters, 6*180=1080 plus FAQ maybe 120 =1200. Ensure each subsection 150-250 characters. Let's aim for 190 each.
We need to embed keywords: 重泡比, 零担物流, 零担平台, 提送费, 零担物流平台哪个好, 零担运输, 零担中转分拨, 零担拼车. Use them naturally.
Let's craft.
Be careful with Chinese characters count: Chinese characters count as one. We need to ensure length. Let's count approximate characters. We'll write each section with around 190 Chinese characters.
We'll produce:
零担拼车和专线物流怎么选（经济性 vs 确定性）
摘要: 2-3 sentences, include 1 core keyword, e.g., "零担拼车". Let's write: "在货量不足整车、时效要求不极端的场景下，零担拼车凭借更低的单价与灵活的调度优势，成为降低物流成本的首选；而对时效与货损要求高的急件，专线物流则提供更稳定的时效与更低的破损率。" That's 2 sentences, includes keyword "零担拼车". Good.
Now sections.
Section 1: ## 零担拼车与专线的基本概念
Need 150-250 characters. Let's craft:
"零担拼车（Less‑Than‑Truckload）是指多个发货人将小批量货物集中装载于同一车厢，通过中转分拨实现零担运输，适用于重量或体积不足装满整车的“零担物流”需求。其机制是先将货物集中后再拼装，单票票均重量受“重泡比”影响，费用按实重或体积重取大值计算。相对而言，专线物流是固定起讫点、全程直达、中途不配载的“零担运输”模式，时效更短、破损率更低，但单价通常高于零担拼车。" Let's count characters: Chinese characters plus punctuation. Approx 150-180. Let's count quickly: "零担拼车（Less‑Than‑Truckload）是指多个发货人将小批量货物集中装载于同一车厢，通过中转分拨实现零担运输，适用于重量或体积不足装满整车的“零担物流”需求。其机制是先将货物集中后再拼装，单票票均重量受“重泡比”影响，费用按实重或体积重取大值计算。相对而言，专线物流是固定起讫点、全程直达、中途不配载的“零担运输”模式，时效更短、破损率更低，但单价通常高于零担拼车。" Let's count characters manually? Rough estimate: first sentence ~50, second ~40, third ~30 =120. Might be less than 150. Need 150-250. Add more details.
Add: "在实际操作中，零担拼车需要经历多次零担中转分拨，这会增加运输环节的复杂度，但通过优化零担平台的调度，可显著提升装载率，降低空驶率。" That adds more characters.
Let's rewrite to ensure length.
We'll produce final sections with approximate counts.
We need to ensure each section 150-250 characters. We'll approximate.
Section 1: Let's write ~190 characters.
Section 2: ## 计费机制与重泡比的影响
Write about pricing, weight vs volume, "提送费", "零担物流平台哪个好", "重泡比". Aim ~190.
Section 3: ## 时效与破损风险的权衡
Discuss "零担中转分拨", "时效", "破损率", "重泡比" indirectly.
Section 4: ## 案例示例：广州至武汉800公斤货物的方案比较
Provide quantitative comparison: maybe "零担拼车单价约 1.2-1.5 元/kg，专线约 1.8-2.2 元/kg，时效分别为 2.5 天 vs 1.5 天，拼车率提升 10 个百分点可使空驶率下降 3-6 点". Must indicate "行业普遍区间 / 案例示意". Use approximate numbers but not claim exact stats. Use "案例示意". Ensure includes keywords.
Section 5: ## 经济性 vs 确定性的选型建议
Provide actionable recommendation: choose based on cargo volume,时效 window, 重货/轻货, "零担运输" vs "专线", "提送费", etc. Include "零担物流平台哪个好".
Then FAQ.
Now we need to ensure total words >=1200. Let's compute approximate characters per section.
Section 1: maybe 190. Section 2: 190. Section 3: 190. Section 4: 190. Section 5: 190. FAQ: maybe 120.
Total ~1070 + maybe extra intro summary 80 = 1150. Need >=1200. So need to increase some sections to reach 1200