From 9df123ff943484f9694c6808a94e944d0134541f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=9B=B7=E7=94=B5=E8=8A=BD=E8=A1=A3?=
 <zhangyanghaha0407@outlook.com>
Date: Fri, 9 Oct 2026 01:05:26 -0400
Subject: [PATCH] Site: alpha-aware contrast check; test the open steps (R2.1)

---
 site/e2e/night.spec.ts | 18 +++++++++++++-----
 site/e2e/text.spec.ts  | 17 +++++++++++++++++
 2 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/site/e2e/night.spec.ts b/site/e2e/night.spec.ts
index 8082d94..091f4f4 100644
--- a/site/e2e/night.spec.ts
+++ b/site/e2e/night.spec.ts
@@ -66,19 +66,27 @@ for (const scheme of ["light", "dark"] as const) {
     await page.emulateMedia({ colorScheme: scheme });
     await open(page);
     const worst = await page.evaluate(() => {
-      const parse = (c: string) => c.match(/[\d.]+/g)!.slice(0, 3).map(Number);
-      const lum = (c: string) => {
-        const [r, g, b] = parse(c).map((v) => {
+      const parse = (c: string) => {
+        const [r, g, b, a = 1] = c.match(/[\d.]+/g)!.map(Number);
+        return { rgb: [r, g, b], a };
+      };
+      const lum = (rgb: number[]) => {
+        const [r, g, b] = rgb.map((v) => {
           const s = v / 255;
           return s <= 0.03928 ? s / 12.92 : ((s + 0.055) / 1.055) ** 2.4;
         });
         return 0.2126 * r + 0.7152 * g + 0.0722 * b;
       };
-      const page = lum(getComputedStyle(document.documentElement).backgroundColor);
+      const ground = parse(getComputedStyle(document.documentElement).backgroundColor).rgb;
+      const page = lum(ground);
+      const shown = (c: string) => {
+        const { rgb, a } = parse(c);
+        return rgb.map((v, i) => v * a + ground[i] * (1 - a));
+      };
       const ratios = [...document.querySelectorAll<HTMLElement>("h1, h2, h3, p, a, li, button")]
         .filter((el) => el.textContent?.trim() && getComputedStyle(el).color !== "rgba(0, 0, 0, 0)")
         .map((el) => {
-          const text = lum(getComputedStyle(el).color);
+          const text = lum(shown(getComputedStyle(el).color));
           return { ratio: (Math.max(text, page) + 0.05) / (Math.min(text, page) + 0.05), text: el.textContent };
         });
       return ratios.sort((a, b) => a.ratio - b.ratio)[0];
diff --git a/site/e2e/text.spec.ts b/site/e2e/text.spec.ts
index 240cc9c..33f90af 100644
--- a/site/e2e/text.spec.ts
+++ b/site/e2e/text.spec.ts
@@ -126,3 +126,20 @@ test.describe("English locale", () => {
     }
   });
 });
+
+test("the download area tells how to open an unnotarized app", async ({ browser }) => {
+  for (const [locale, words] of [
+    ["en-US", ["System Settings", "Privacy & Security", "Open Anyway"]],
+    ["zh-CN", ["系统设置", "隐私与安全性", "仍要打开"]],
+  ] as const) {
+    const page = await browser.newPage({ locale, reducedMotion: "reduce" });
+    await page.goto("/");
+    const steps = page.locator("#download [data-t=unsigned]");
+    await expect(steps).toBeVisible();
+    for (const word of words) await expect(steps).toContainText(word);
+    await page.locator(".lang").click();
+    await expect(steps).toBeVisible();
+    await expect(steps).not.toContainText(words[0]);
+    await page.close();
+  }
+});