From 26eaee5c572f58ead205edf445e6362234c2adab Mon Sep 17 00:00:00 2001
From: Maxim Dolgolyov <maxim.dolgolyov@gmail.com>
Date: Sat, 30 May 2026 19:09:17 +0300
Subject: [PATCH] =?UTF-8?q?fix(chemistry7):=20=D1=82=D0=B5=D0=BC=D0=B0=20?=
 =?UTF-8?q?=D0=B3=D0=BB=D0=B0=D0=B2=D1=8B=20+=20=D1=84=D0=BE=D0=BD=20para-?=
 =?UTF-8?q?hero=20(=D0=BE=D0=B1=D0=BB=D0=B0=D1=81=D1=82=D1=8C=20=C2=A7-?=
 =?UTF-8?q?=D0=B7=D0=B0=D0=B3=D0=BE=D0=BB=D0=BE=D0=B2=D0=BA=D0=B0=20=D1=81?=
 =?UTF-8?q?=D0=BB=D0=B8=D0=B2=D0=B0=D0=BB=D0=B0=D1=81=D1=8C)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Страницы глав наследовали amber-палитру chem8-textbook.css и базовый
.para-hero без фона (нужен модификатор .ph-N) → блок заголовка § сливался
с фоном. Добавлен per-chapter <style>: своя палитра (emerald/cyan/violet/blue,
как карточки в хабе) + сплошной градиент .para-hero. Тесты chem7: 15/15.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 frontend/textbooks/chemistry_7_ch1.html | 6 ++++++
 frontend/textbooks/chemistry_7_ch2.html | 6 ++++++
 frontend/textbooks/chemistry_7_ch3.html | 6 ++++++
 frontend/textbooks/chemistry_7_ch4.html | 6 ++++++
 4 files changed, 24 insertions(+)

diff --git a/frontend/textbooks/chemistry_7_ch1.html b/frontend/textbooks/chemistry_7_ch1.html
index 14df0b9..c6aaa87 100644
--- a/frontend/textbooks/chemistry_7_ch1.html
+++ b/frontend/textbooks/chemistry_7_ch1.html
@@ -10,6 +10,12 @@
 <link href="https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Inter:wght@400;500;600;700&family=Unbounded:wght@700;800;900&family=JetBrains+Mono:wght@500;700&display=swap" rel="stylesheet">
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css">
 <link rel="stylesheet" href="/css/chem8-textbook.css">
+<style>/* Химия 7 · тема главы 1 — emerald (переопределяет amber chem8-textbook.css) */
+:root{--bg:#f0fdf4;--border:#bbf7d0;--pri:#059669;--pri-d:#047857;--pri-l:#34d399;--pri-soft:#d1fae5;--sec-acc:#059669;--sec-acc-d:#047857;--sec-acc-soft:#d1fae5;--warn:#047857;--warn-bg:#d1fae5}
+html.dark{--bg:#0a1a12;--border:#1f4030;--pri-soft:rgba(5,150,105,.18);--sec-acc-soft:rgba(5,150,105,.18)}
+.hdr{background:linear-gradient(110deg,#065f46 0%,#059669 55%,#6ee7b7 100%)}
+.hero{background:linear-gradient(135deg,var(--pri-soft),rgba(110,231,183,.12))}
+.para-hero{background:linear-gradient(135deg,#064e3b,#059669 55%,#34d399)}</style>
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js"></script>
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/contrib/auto-render.min.js"></script>
 <script src="/js/api.js" defer></script>
diff --git a/frontend/textbooks/chemistry_7_ch2.html b/frontend/textbooks/chemistry_7_ch2.html
index 1e124e2..078d227 100644
--- a/frontend/textbooks/chemistry_7_ch2.html
+++ b/frontend/textbooks/chemistry_7_ch2.html
@@ -10,6 +10,12 @@
 <link href="https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Inter:wght@400;500;600;700&family=Unbounded:wght@700;800;900&family=JetBrains+Mono:wght@500;700&display=swap" rel="stylesheet">
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css">
 <link rel="stylesheet" href="/css/chem8-textbook.css">
+<style>/* Химия 7 · тема главы 2 — cyan (переопределяет amber chem8-textbook.css) */
+:root{--bg:#ecfeff;--border:#a5f3fc;--pri:#0891b2;--pri-d:#0e7490;--pri-l:#22d3ee;--pri-soft:#cffafe;--sec-acc:#0891b2;--sec-acc-d:#0e7490;--sec-acc-soft:#cffafe;--warn:#0e7490;--warn-bg:#cffafe}
+html.dark{--bg:#08191c;--border:#164e5b;--pri-soft:rgba(8,145,178,.18);--sec-acc-soft:rgba(8,145,178,.18)}
+.hdr{background:linear-gradient(110deg,#164e63 0%,#0891b2 55%,#22d3ee 100%)}
+.hero{background:linear-gradient(135deg,var(--pri-soft),rgba(34,211,238,.12))}
+.para-hero{background:linear-gradient(135deg,#164e63,#0891b2 55%,#22d3ee)}</style>
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js"></script>
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/contrib/auto-render.min.js"></script>
 <script src="/js/api.js" defer></script>
diff --git a/frontend/textbooks/chemistry_7_ch3.html b/frontend/textbooks/chemistry_7_ch3.html
index 349f0c1..21f31e1 100644
--- a/frontend/textbooks/chemistry_7_ch3.html
+++ b/frontend/textbooks/chemistry_7_ch3.html
@@ -10,6 +10,12 @@
 <link href="https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Inter:wght@400;500;600;700&family=Unbounded:wght@700;800;900&family=JetBrains+Mono:wght@500;700&display=swap" rel="stylesheet">
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css">
 <link rel="stylesheet" href="/css/chem8-textbook.css">
+<style>/* Химия 7 · тема главы 3 — violet (переопределяет amber chem8-textbook.css) */
+:root{--bg:#f5f3ff;--border:#ddd6fe;--pri:#7c3aed;--pri-d:#6d28d9;--pri-l:#a78bfa;--pri-soft:#ede9fe;--sec-acc:#7c3aed;--sec-acc-d:#6d28d9;--sec-acc-soft:#ede9fe;--warn:#6d28d9;--warn-bg:#ede9fe}
+html.dark{--bg:#140a24;--border:#3b2a63;--pri-soft:rgba(124,58,237,.18);--sec-acc-soft:rgba(124,58,237,.18)}
+.hdr{background:linear-gradient(110deg,#4c1d95 0%,#7c3aed 55%,#a78bfa 100%)}
+.hero{background:linear-gradient(135deg,var(--pri-soft),rgba(167,139,250,.12))}
+.para-hero{background:linear-gradient(135deg,#4c1d95,#7c3aed 55%,#a78bfa)}</style>
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js"></script>
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/contrib/auto-render.min.js"></script>
 <script src="/js/api.js" defer></script>
diff --git a/frontend/textbooks/chemistry_7_ch4.html b/frontend/textbooks/chemistry_7_ch4.html
index ff866c0..7b79c64 100644
--- a/frontend/textbooks/chemistry_7_ch4.html
+++ b/frontend/textbooks/chemistry_7_ch4.html
@@ -10,6 +10,12 @@
 <link href="https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Inter:wght@400;500;600;700&family=Unbounded:wght@700;800;900&family=JetBrains+Mono:wght@500;700&display=swap" rel="stylesheet">
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css">
 <link rel="stylesheet" href="/css/chem8-textbook.css">
+<style>/* Химия 7 · тема главы 4 — blue (переопределяет amber chem8-textbook.css) */
+:root{--bg:#eff6ff;--border:#bfdbfe;--pri:#2563eb;--pri-d:#1d4ed8;--pri-l:#60a5fa;--pri-soft:#dbeafe;--sec-acc:#2563eb;--sec-acc-d:#1d4ed8;--sec-acc-soft:#dbeafe;--warn:#1d4ed8;--warn-bg:#dbeafe}
+html.dark{--bg:#0a1222;--border:#1e3a5f;--pri-soft:rgba(37,99,235,.18);--sec-acc-soft:rgba(37,99,235,.18)}
+.hdr{background:linear-gradient(110deg,#1e3a8a 0%,#2563eb 55%,#60a5fa 100%)}
+.hero{background:linear-gradient(135deg,var(--pri-soft),rgba(96,165,250,.12))}
+.para-hero{background:linear-gradient(135deg,#1e3a8a,#2563eb 55%,#60a5fa)}</style>
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js"></script>
 <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/contrib/auto-render.min.js"></script>
 <script src="/js/api.js" defer></script>