diff --git a/app/Support/CourierAgreementPdf.php b/app/Support/CourierAgreementPdf.php
index 8629db0d..40dbe002 100644
--- a/app/Support/CourierAgreementPdf.php
+++ b/app/Support/CourierAgreementPdf.php
@@ -3,6 +3,9 @@
 namespace App\Support;
 
 use App\Models\Business\CourierAgreementSignature;
+use DOMDocument;
+use DOMXPath;
+use Dompdf\FrameReflower\Text;
 use Illuminate\Support\Carbon;
 use RuntimeException;
 
@@ -29,7 +32,16 @@ final class CourierAgreementPdf
         $pdf = app('dompdf.wrapper');
         $pdf->setPaper('a4', 'portrait');
         $pdf->loadHTML($html, 'UTF-8');
-        $bytes = $pdf->output();
+        $this->applyLatinFont($pdf->getDomPDF()->getDom());
+        // Dompdf otherwise treats uninterrupted Chinese text as one word,
+        // moving a whole clause to the next line after its Latin number.
+        $wordBreakPattern = Text::$_wordbreak_pattern;
+        Text::$_wordbreak_pattern = '/([^\S\xA0\x{202F}\x{2007}\n]+|\R|\-+|\xAD+|(?<=[\p{Han}\x{3000}-\x{303F}\x{FF00}-\x{FFEF}])(?![，。、；：？！）】》]))/u';
+        try {
+            $bytes = $pdf->output();
+        } finally {
+            Text::$_wordbreak_pattern = $wordBreakPattern;
+        }
 
         if (! is_string($bytes) || ! str_starts_with($bytes, '%PDF-')) {
             throw new RuntimeException('协议 PDF 生成失败。');
@@ -38,6 +50,38 @@ final class CourierAgreementPdf
         return $bytes;
     }
 
+    private function applyLatinFont(DOMDocument $document): void
+    {
+        // DroidSansFallback has no ASCII or typographic quote glyphs. Static
+        // clauses need the Latin font too, or glyph widths and layout diverge.
+        $nodes = (new DOMXPath($document))->query(
+            '//body//text()[not(ancestor::style or ancestor::script or ancestor::*[contains(concat(" ", normalize-space(@class), " "), " latin ")])]'
+        );
+
+        foreach ($nodes as $node) {
+            if (preg_match('/[\x21-\x7E\x{2018}-\x{201F}]/u', $node->nodeValue) !== 1) {
+                continue;
+            }
+
+            $parts = preg_split('/([\x20-\x7E\x{2018}-\x{201F}]+)/u', $node->nodeValue, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
+            $fragment = $document->createDocumentFragment();
+
+            foreach ($parts as $part) {
+                $text = $document->createTextNode($part);
+                if (preg_match('/^[\x20-\x7E\x{2018}-\x{201F}]+$/u', $part) === 1) {
+                    $span = $document->createElement('span');
+                    $span->setAttribute('class', 'latin');
+                    $span->appendChild($text);
+                    $fragment->appendChild($span);
+                } else {
+                    $fragment->appendChild($text);
+                }
+            }
+
+            $node->parentNode->replaceChild($fragment, $node);
+        }
+    }
+
     private function title(CourierAgreementSignature $signature): string
     {
         return match ($signature->document_type) {
diff --git a/resources/views/business/pdf/courier-agreement.blade.php b/resources/views/business/pdf/courier-agreement.blade.php
index 2e454688..30118e45 100644
--- a/resources/views/business/pdf/courier-agreement.blade.php
+++ b/resources/views/business/pdf/courier-agreement.blade.php
@@ -8,13 +8,13 @@
         body { font-family: agreement-fallback, sans-serif; font-size: 13px; font-weight: 400; line-height: 1.8; color: #171717; }
         .latin { font-family: "DejaVu Sans", sans-serif; }
         h1 { text-align: center; font-size: 20px; margin: 0 0 24px; }
-        h2 { font-size: 14px; margin: 18px 0 8px; }
-        h4 { font-size: 14px; margin: 18px 0 8px; }
+        h2 { font-size: 14px; margin: 18px 0 8px; page-break-after: avoid; }
+        h4 { font-size: 14px; margin: 18px 0 8px; page-break-after: avoid; }
         p { margin: 0 0 12px; overflow-wrap: anywhere; word-break: break-all; }
         .meta { color: #595959; font-size: 11px; text-align: right; margin-bottom: 20px; }
         .account { margin: 14px 0 20px 28px; }
         .account div { margin: 6px 0; }
-        .sign { margin-top: 36px; text-align: right; }
+        .sign { margin-top: 36px; text-align: right; page-break-inside: avoid; }
         .sign p { margin: 8px 0; }
         .list { margin-top: 0; }
         .page { page-break-after: always; }
diff --git a/tests/Feature/Business/CourierAgreementSignatureWorkflowTest.php b/tests/Feature/Business/CourierAgreementSignatureWorkflowTest.php
index 49474608..f91b66bf 100644
--- a/tests/Feature/Business/CourierAgreementSignatureWorkflowTest.php
+++ b/tests/Feature/Business/CourierAgreementSignatureWorkflowTest.php
@@ -8,6 +8,9 @@ use App\Models\Business\CourierAgreementSignature;
 use App\Models\Business\CourierQuoteChange;
 use App\Models\Business\CourierQuoteSignature;
 use App\Models\Business\CourierQuoteVersion;
+use App\Support\CourierAgreementPdf;
+use DOMDocument;
+use DOMXPath;
 use Illuminate\Http\Client\Request as ClientRequest;
 use Illuminate\Support\Facades\Http;
 use Illuminate\Support\Facades\Queue;
@@ -360,6 +363,55 @@ class CourierAgreementSignatureWorkflowTest extends FeatureTestCase
         });
     }
 
+    public function test_cooperation_pdf_preserves_clauses_and_uses_a_supported_font_for_static_numbers(): void
+    {
+        $payload = $this->cooperationContractPayload('cooperation-font');
+        $payload['signature_date'] = '2026-10-10';
+        $signature = new CourierAgreementSignature([
+            'business_no' => 'AGR-FONT-REGRESSION',
+            'template_code' => 'TPL-COOPERATION-CONTRACT-V1',
+            'document_type' => 'cooperation-contract',
+            'payload' => $payload,
+        ]);
+        $html = view('business.pdf.courier-agreement', [
+            'signature' => $signature,
+            'type' => $signature->document_type,
+            'title' => '服务协议',
+            'payload' => $payload,
+            'signatureDate' => '2026年10月10日',
+            'fontPath' => str_replace('\\', '/', resource_path('fonts/DroidSansFallback.ttf')),
+        ])->render();
+        $original = new DOMDocument();
+        $original->loadHTML($html, LIBXML_NOWARNING | LIBXML_NOERROR);
+        $pdf = app('dompdf.wrapper');
+        $document = null;
+        $wrapper = \Mockery::mock($pdf);
+        $wrapper->shouldReceive('output')->once()->andReturnUsing(function () use ($pdf, &$document): string {
+            $document = clone $pdf->getDomPDF()->getDom();
+
+            return $pdf->output();
+        });
+        $this->app->instance('dompdf.wrapper', $wrapper);
+
+        $wordBreakPattern = \Dompdf\FrameReflower\Text::$_wordbreak_pattern;
+        $bytes = app(CourierAgreementPdf::class)->render($signature);
+
+        $this->assertStringStartsWith('%PDF-', $bytes);
+        $this->assertSame($wordBreakPattern, \Dompdf\FrameReflower\Text::$_wordbreak_pattern);
+        $text = $document->getElementsByTagName('body')->item(0)->textContent;
+        $this->assertSame(
+            preg_replace('/\s+/u', '', $original->getElementsByTagName('body')->item(0)->textContent),
+            preg_replace('/\s+/u', '', $text),
+        );
+        $this->assertStringContainsString('4.6.1、针对甲方客服录入', $text);
+        $this->assertStringContainsString('95%', $text);
+        $this->assertStringContainsString('5000元/次', $text);
+        $xpath = new DOMXPath($document);
+        foreach ($xpath->query('//body//text()[not(ancestor::*[contains(concat(" ", normalize-space(@class), " "), " latin ")])]') as $node) {
+            $this->assertDoesNotMatchRegularExpression('/[\x21-\x7E\x{2018}-\x{201F}]/u', $node->nodeValue);
+        }
+    }
+
     public function test_cooperation_contract_uses_the_persons_real_name_instead_of_the_courier_name(): void
     {
         $this->fakeEsign();