[css-color-4] Clarified how system colors react to the used color scheme w3c/csswg-drafts@1ba4665

＋編集（訳注／誤記（ "one" → "none"

Author: triple-underscore

css-color-ja.html

@@ -428,8 +428,8 @@
 ●●options
 
 spec_title:CSS Color Module Level 4
-spec_date:2026-02-23
-trans_update:2026-02-24
+spec_date:2026-03-26
+trans_update:2026-03-28
 source_checked:250316
 page_state_key:CSS
 original_url:https://drafts.csswg.org/css-color-4/
@@ -839,6 +839,7 @@
 
 積層~文脈:~CSS2J#stacking-context
 強制d色~mode:~CSSCOLORADJUST#forced-colors-mode
+使用~色~scheme:~CSSCOLORADJUST#used-color-scheme
 媒体~特能:~MQ5#media-feature
 
 有位置:~CSSPOS#positioned-box
@@ -2812,8 +2813,10 @@ <h1>CSS Color Module Level 4</h1>
 ］用の各種~CSS［
 `color$t 値, ~prop
 ］を述べる。
+また、
+色がどう補間されるか, および異なる色域へ対応付ける方法も述べる。
 ◎
-This specification describes CSS &lt;color&gt; values and properties for foreground color and group opacity.
+This specification describes CSS &lt;color&gt; values, and properties for foreground color and group opacity. It also describes how colors are interpolated, and how to gamut map colors.
 </p>
 
 ~CSSisaLANG
@@ -4742,13 +4745,17 @@ <h3 title="The RGB functions: rgb() and rgba()">5.1. ~RGB関数： `rgb^f, `rgba
 `modern-rgb-syntax@t
 	= rgb(
 		[ `number$t | `percentage$t | `none$v]{3}
-		[ / [`alpha-value$t | one] ]? )
+		[ / [`alpha-value$t | `none$v] ]? )
 `modern-rgba-syntax@t
 	= rgba(
 		[ `number$t | `percentage$t | `none$v]{3}
 		[ / [`alpha-value$t | `none$v] ]? )
 </pre>
 
+<p class="trans-note">【
+関数~名を除いて，
+`rgb^f と `rgba^f の構文は一致する。
+】</p>
 
 <div>
 <table id="prr-rgb"><tbody>
@@ -5155,9 +5162,10 @@ <h3 title="System Colors">6.2. ~system色</h3>
 
 <p>
 判読し易さを保守するため、
-`system-color$t ~keywordは，明な~modeから暗な~modeへの（およびその逆の）変化にも応答する。
+`system-color$t ~keywordは，
+`使用~色~scheme$にも応答する。
 ◎
-To maintain legibility, the &lt;system-color&gt; keywords also respond to light mode or dark mode changes.
+To maintain legibility, the &lt;system-color&gt; keywords also respond to the used color scheme.
 </p>
 
 <div class="example" id="ex-LM-DM-links">
@@ -5199,13 +5207,15 @@ <h3 title="System Colors">6.2. ~system色</h3>
 
 <p>
 しかしながら，`強制d色~mode$においては、
-~page上のほとんどの色は，利用者が選んだ制約された~paletteの中に強制される。
+~page上のほとんどの色は，利用者が選んだ制約された~paletteの中に強制される
+— `CSS-COLOR-ADJUST-1$r `§ 強制d色~mode用の色~palette＠~CSSCOLORADJUST#forced-color-palettes$
+を見よ。
 各種
 `system-color@t
 ~keywordは，この~paletteを成す色を公開して、
 ~pageの残りを，この制約された~paletteに統合できるようにする。
 ◎
-However, in forced colors mode, most colors on the page are forced into a restricted, user-chosen palette. The &lt;system-color&gt; keywords expose these user-chosen colors so that the rest of the page can integrate with this restricted palette.
+However, in forced colors mode, most colors on the page are forced into a restricted, user-chosen palette, see CSS Color Adjustment 1 § 5.2 Forced Colors Mode Color Palettes. The &lt;system-color&gt; keywords expose these user-chosen colors so that the rest of the page can integrate with this restricted palette.
 </p>
 
 <p>
@@ -5903,6 +5913,11 @@ <h2 title="HSL Colors: hsl() and hsla() functions">7. HSL 色： `hsl^f, `hsla^f
 	= hsla( `hue$t, `percentage$t, `percentage$t, `alpha-value$t? )
 </pre>
 
+<p class="trans-note">【
+関数~名を除いて，
+`hsl^f と `hsla^f の構文は一致する。
+】</p>
+
 <div>
 <table id="prr-hsl"><tbody>
 <tr><th>百分率
@@ -11928,7 +11943,7 @@ <h4 title="Sample Pseudocode for the Ray Trace Gamut Mapping">13.2.6. 射線~tra
 			<li>
 %交点 ~LET `射線を投影する$( %~anchor, %~RGB色 )
 ◎
-• Cast a ray from anchor to origin_rgb and let intersection be the intersection of this ray with the gamut boundary
+• Cast a ray from start = anchor to end = origin_rgb and let intersection be the intersection of this ray with the gamut boundary
 </li>
 			<li>
 <p>
@@ -12104,12 +12119,12 @@ <h4 title="Sample Pseudocode for the Ray Trace Gamut Mapping">13.2.6. 射線~tra
 			<li>
 %a ~LET %始端[ %i ]
 ◎
-let a be start[i]
+let a be start [i]
 </li>
 			<li>
 %b ~LET %終端[ %i ]
 ◎
-let b be end[i]
+let b be end [i]
 </li>
 			<li>
 %d ~LET %b ~MINUS %a
@@ -12119,7 +12134,7 @@ <h4 title="Sample Pseudocode for the Ray Trace Gamut Mapping">13.2.6. 射線~tra
 			<li>
 %方向 に %d を`付加する$
 ◎
-let direction[i] be d
+let direction [i] be d
 </li>
 			<li>
 <p>
@@ -12134,22 +12149,22 @@ <h4 title="Sample Pseudocode for the Ray Trace Gamut Mapping">13.2.6. 射線~tra
 					<li>
 %t1 ~LET ( %最小[ %i ] ~MINUS %a ) ~DIV %d
 ◎
-let t1 be (bmin[i] - a) * inv_d
+let t1 be (bmin [i] - a ) * inv_d
 </li>
 					<li>
 %t2 ~LET ( %最大[ %i ] ~MINUS %a ) ~DIV %d
 ◎
-let t2 be (bmax[i] - a) * inv_d
+let t2 be (bmax [i] - a ) * inv_d
 </li>
 					<li>
 %近 ~SET `max^op( `min^op( %t1, %t2 ), %近 )
 ◎
-let tnear be max(min(t1, t2), tnear)
+let tnear be max(min(t1, t2), tnear )
 </li>
 					<li>
 %遠 ~SET `min^op( `max^op( %t1, %t2 ), %遠 )
 ◎
-let tfar be min(max(t1, t2), tfar)
+let tfar be min(max(t1, t2), tfar )
 </li>
 				</ol>
 			</li>
@@ -12162,7 +12177,7 @@ <h4 title="Sample Pseudocode for the Ray Trace Gamut Mapping">13.2.6. 射線~tra
 ⇒
 ~RET ε
 ◎
-else if (a &lt; bmin[i] or a &gt; bmax[i])
+else if (a &lt; bmin [i] or a &gt; bmax [i])
 • return INTERSECTION NOT FOUND
 </li>
 		</ol>
@@ -12221,7 +12236,7 @@ <h4 title="Sample Pseudocode for the Ray Trace Gamut Mapping">13.2.6. 射線~tra
 %始端[ %i ] ~PLUS %方向[ %i ] ~MUL %近
 ◎
 for (i =0; i &lt; 3; i++):
-• let result[i] be start[i] + direction[i] * tnear
+• let result [i] be start [i] + direction [i] * tnear
 </li>
 	<li>
 ~RET %結果
@@ -12260,7 +12275,7 @@ <h5 title="Footnotes for Ray Trace algorithm">13.2.6.1. 射線~trace~algo用の
 For typical RGB spaces where the gamut bounds are 0 and 1 for each component this simplifies to a single constant rather than a 3-element array.
 ◎
 #raytrace-footnote-7
-favoring the first intersection in the direction start -&gt; end.
+favoring the first intersection in the direction start -&gt; end .
 </div>
 
 				</section>
@@ -12720,11 +12735,11 @@ <h3 title="Resolving other colors">14.5. その他の色の解決-法</h3>
 `算出d値$は、
 それが属する色~空間~内の対応する色になる。
 しかしながら、
-そのような色は， “強制d色~mode” により改められないモノトスル。
+そのような色は，`強制d色~mode$により改められないモノトスル。
 </li>
 </ul>
 ◎
-The declared value for each &lt;system-color&gt; keyword and &lt;deprecated-color&gt; keyword is itself. The computed value is the corresponding color in its color space. However, such colors must not be altered by 'forced colors mode'.
+The declared value for each &lt;system-color&gt; keyword and &lt;deprecated-color&gt; keyword is itself. The computed value is the corresponding color in its color space. However, such colors must not be altered by forced colors mode.
 </div>
 
 <div class="example" id="ex-system-resolve">
@@ -16032,6 +16047,18 @@ <h2 title="Changes">変更点</h2>
 Changes since the Candidate Recommendation Draft of 24 April 2025
 </dt>
 	<dd>
+`~system色$が`使用~色~scheme$にどう反応するかを明確化した。
+（ `13719$issue ）
+◎
+Clarified how system colors react to the used color scheme (Issue 13719)
+</dd>
+	<dd>
+要約aを更新した
+— 色~補間と色域~対応付けを言及するよう。
+◎
+Updated abstract to mention color interpolation and gamut mapping.
+</dd>
+	<dd>
 ~CSS色域~対応付けが目指すものに関する言い回しを明確化した。
 ◎
 Clarified wording regarding the aims of CSS gamut mapping