fix(phys8): восстановлен <!doctype>, JS-блок интерактивов возвращён в <script> (ch1-3)

2026-06-01 10:53:42 +03:00
parent e88cd431ca
commit 6ae7e1877e
3 changed files with 791 additions and 794 deletions
@@ -1,4 +1,257 @@
-<!
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 <title>Физика 8 · Глава 1 · «Тепловые явления»</title>
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 </style>
 </head>
 <body class="p8-theme-thermal">
 <header class="p8-hero">
  <div class="p8-hero-wm"><svg viewBox="0 0 100 100" aria-hidden="true">
  <path d="M50 8 C 52 22 65 30 64 46 C 63 56 56 60 55 48 C 53 56 48 60 42 58 C 36 56 32 50 34 42 C 30 52 22 60 24 72 C 26 84 36 92 50 92 C 64 92 76 84 76 70 C 76 50 60 40 56 22 C 54 14 52 10 50 8 Z"/>
 </svg></div>
  <div class="p8-hero-meter" id="p8-meter-ch1"><span id="p8-meter-val">37</span>°C</div>
  <div class="p8-hero-inner">
    <div class="p8-hero-eyebrow">Глава 1 · 11 параграфов</div>
    <h1 class="p8-hero-title">Тепловые явления</h1>
    <div class="p8-hero-sub">Внутренняя энергия, способы теплопередачи, плавление и кипение. Перетаскивайте термометры, нагреватели и материалы — наблюдайте поведение тепла в реальном времени.</div>
    <div class="hdr-side" style="margin-top:18px;display:flex;gap:8px;flex-wrap:wrap;position:relative;z-index:1">
      <a href="/textbook/physics-8" class="hdr-btn"><svg class="ic" viewBox="0 0 24 24"><polyline points="15 18 9 12 15 6"/></svg> К физике 8</a>
      <button id="search-btn" class="hdr-btn"><svg class="ic" viewBox="0 0 24 24"><circle cx="11" cy="11" r="7"/><path d="m21 21-4-4"/></svg> Поиск</button>
      <button id="sidebar-btn" class="hdr-btn"><svg class="ic" viewBox="0 0 24 24"><line x1="4" y1="6" x2="20" y2="6"/><line x1="4" y1="12" x2="20" y2="12"/><line x1="4" y1="18" x2="14" y2="18"/></svg> Шпаргалка</button>
      <button id="theme-btn" class="hdr-btn"><svg class="ic" viewBox="0 0 24 24"><path d="M21 12.8A9 9 0 1 1 11.2 3a7 7 0 0 0 9.8 9.8z"/></svg><span id="theme-lab">Тёмная</span></button>
    </div>
  </div>
 </header>
 <main class="main">
  <div class="col-main">
    <section class="hero">
      <h2>Тепловые явления — как энергия переходит между телами</h2>
      <p>Внутренняя энергия зависит от температуры тела. Тепло передаётся теплопроводностью, конвекцией и излучением. При нагревании, плавлении и кипении нужно разное количество теплоты.</p>
      <div class="hero-row">
        <button class="btn-primary" onclick="goTo('p1')"><svg class="ic" viewBox="0 0 24 24"><polygon points="6 4 20 12 6 20 6 4" fill="currentColor" stroke="none"/></svg> Начать § 1</button>
        <div class="hero-progress">
          <span class="hp-label">Прогресс по главе</span>
          <div class="hp-bar"><div id="hero-hp-fill" class="hp-fill"></div></div>
          <span id="hero-hp-text" class="hp-text">0%</span>
        </div>
        <div id="hero-xp-badge" class="hero-xp-badge" data-gamified></div>
      </div>
    </section>
    <section class="psel">
      <div class="psel-title">Параграфы главы</div>
      <div id="psel-grid" class="psel-grid"></div>
    </section>
    <section id="sec-p1" class="sec">
  <div class="p8-sec-wm" id="p8-sec-wm-p1" aria-hidden="true"><svg viewBox="0 0 100 100"><circle cx="50" cy="50" r="28" stroke="currentColor" stroke-width="6" fill="none"/><path d="M50 22 v56 M22 50 h56" stroke="currentColor" stroke-width="3"/></svg></div><div class="sec-header"><span class="sec-num">&sect; 1</span><h2 class="sec-h">Внутренняя энергия</h2></div><div id="p1-body"></div></section>
    <section id="sec-p2" class="sec">
  <div class="p8-sec-wm" id="p8-sec-wm-p2" aria-hidden="true"><svg viewBox="0 0 100 100"><path d="M50 12 v76 M50 12 l-14 16 M50 12 l14 16 M50 88 l-14-16 M50 88 l14-16" stroke="currentColor" stroke-width="4" fill="none"/></svg></div><div class="sec-header"><span class="sec-num">&sect; 2</span><h2 class="sec-h">Способы изменения внутренней энергии</h2></div><div id="p2-body"></div></section>
    <section id="sec-p3" class="sec">
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    <div class="p8-hero-eyebrow">Глава 1 · 11 параграфов</div>
    <h1 class="p8-hero-title">Тепловые явления</h1>
    <div class="p8-hero-sub">Внутренняя энергия, способы теплопередачи, плавление и кипение. Перетаскивайте термометры, нагреватели и материалы — наблюдайте поведение тепла в реальном времени.</div>
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    <div class="p8-hero-eyebrow">Глава 2 · 20 параграфов</div>
    <h1 class="p8-hero-title">Электромагнитные явления</h1>
    <div class="p8-hero-sub">Заряд, ток, цепь, магнитное поле. Конструируйте цепи из компонентов, перемещайте заряды, наблюдайте за искрами и полями.</div>
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      <h2>Электромагнитные явления — от заряда до магнита</h2>
      <p>Заряды притягиваются и отталкиваются, образуют электрическое поле. По проводнику течёт ток, и закон Ома связывает $U$, $I$, $R$. У постоянных магнитов и проводников с током есть магнитное поле.</p>
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  <div class="p8-sec-wm" id="p8-sec-wm-p19" aria-hidden="true"><svg viewBox="0 0 100 100"><rect x="20" y="40" width="14" height="20" fill="currentColor"/><rect x="38" y="35" width="6" height="30" fill="currentColor"/><line x1="50" y1="50" x2="80" y2="50" stroke="currentColor" stroke-width="3"/></svg></div><div class="sec-header"><span class="sec-num">&sect; 19</span><h2 class="sec-h">Электрический ток. Источники тока</h2></div><div id="p19-body"></div></section>
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    <section id="sec-final2" class="sec"><div class="sec-header"><span class="sec-num">&#9733;</span><h2 class="sec-h">Финал главы</h2></div><div id="final2-body"></div></section>
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    <div class="p8-hero-eyebrow">Глава 2 · 20 параграфов</div>
    <h1 class="p8-hero-title">Электромагнитные явления</h1>
    <div class="p8-hero-sub">Заряд, ток, цепь, магнитное поле. Конструируйте цепи из компонентов, перемещайте заряды, наблюдайте за искрами и полями.</div>
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    <div class="p8-hero-eyebrow">Глава 3 · 9 параграфов</div>
    <h1 class="p8-hero-title">Световые явления</h1>
    <div class="p8-hero-sub">Лучи, тени, отражение, преломление, линзы, дисперсия, глаз. Перетаскивайте источники света и зеркала, наблюдайте за лучами и спектром.</div>
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 .hdr-btn{padding:7px 12px;border-radius:9px;background:rgba(255,255,255,.14);color:#fff;font-weight:600;font-size:.82rem;display:inline-flex;align-items:center;gap:6px;transition:background .15s;text-decoration:none}
 .hdr-btn:hover{background:rgba(255,255,255,.24)}
 .main{max-width:1240px;margin:0 auto;padding:22px;width:100%;display:grid;grid-template-columns:1fr 280px;gap:24px}
@media(max-width:980px){.main{grid-template-columns:1fr;padding:14px}}
 .col-main{min-width:0}
 .hero{background:linear-gradient(135deg,var(--pri-soft) 0%,var(--acc-soft) 50%,var(--pri-soft) 100%);background-size:200% 200%;animation:heroShift 12s ease-in-out infinite;border:1px solid var(--border);border-radius:18px;padding:24px 22px;margin-bottom:24px;position:relative;overflow:hidden}
@keyframes heroShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
 .hero h2{font-family:'Unbounded',sans-serif;font-size:1.55rem;font-weight:800;color:var(--pri2);margin-bottom:10px;letter-spacing:-.01em}
 .hero p{font-size:.95rem;color:var(--text);opacity:.88;margin-bottom:14px;max-width:640px}
 .hero-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
 .btn-primary{padding:11px 22px;background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;border-radius:11px;font-weight:700;font-size:.92rem;display:inline-flex;align-items:center;gap:8px;box-shadow:var(--sh2);transition:transform .15s,box-shadow .15s}
 .btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 28px rgba(0,0,0,.18)}
 .hero-progress{flex:1;min-width:200px;max-width:280px}
 .hp-label{font-size:.74rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;display:block;margin-bottom:5px}
 .hp-bar{height:8px;background:rgba(0,0,0,.12);border-radius:5px;overflow:hidden}
 .hp-fill{height:100%;background:linear-gradient(90deg,var(--pri),var(--acc));border-radius:5px;width:0%;transition:width .6s cubic-bezier(.16,1,.3,1)}
 .hp-text{font-size:.78rem;color:var(--muted);font-weight:700;margin-top:4px;display:block}
 .hero-xp-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;background:linear-gradient(135deg,var(--warn,#f59e0b),var(--pri));color:#fff;border-radius:99px;font-size:.82rem;font-weight:800;letter-spacing:.02em;box-shadow:0 4px 12px rgba(0,0,0,.18);font-family:'Unbounded',sans-serif}
 .psel{margin-bottom:24px}
 .psel-title{font-size:.72rem;font-weight:800;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px}
 .psel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}
 .psel-card{background:var(--card);border:1.5px solid var(--border);border-radius:13px;padding:14px;cursor:pointer;transition:transform .2s,box-shadow .2s,border-color .2s;text-align:left;position:relative}
 .psel-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--pri)}
 .psel-card.active{border-color:var(--pri);background:linear-gradient(135deg,var(--pri-soft),var(--card));box-shadow:var(--sh2)}
 .psel-card.active::after{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--pri),var(--acc));border-radius:13px 13px 0 0}
 .psel-num{font-family:'Unbounded',sans-serif;font-size:.72rem;font-weight:800;color:var(--pri);text-transform:uppercase;letter-spacing:.08em;margin-bottom:5px}
 .psel-name{font-size:.86rem;font-weight:700;color:var(--text);line-height:1.3;margin-bottom:8px}
 .psel-prog{height:4px;background:rgba(0,0,0,.10);border-radius:3px;overflow:hidden}
 .psel-prog-fill{height:100%;background:var(--pri);width:0%;transition:width .4s}
 .psel-card.final{background:linear-gradient(135deg,var(--acc-soft),var(--pri-soft))}
 .psel-card.final .psel-num{color:var(--warn)}
 .sec[id="sec-p32"]{ --sec-acc:#0891b2; --sec-acc-d:#0e7490; --sec-acc-soft:#cffafe; }
 .sec[id="sec-p33"]{ --sec-acc:#0891b2; --sec-acc-d:#0e7490; --sec-acc-soft:#cffafe; }
 .sec[id="sec-p34"]{ --sec-acc:#0891b2; --sec-acc-d:#0e7490; --sec-acc-soft:#cffafe; }
 .sec[id="sec-p35"]{ --sec-acc:#0891b2; --sec-acc-d:#0e7490; --sec-acc-soft:#cffafe; }
 .sec[id="sec-p36"]{ --sec-acc:#0891b2; --sec-acc-d:#0e7490; --sec-acc-soft:#cffafe; }
 .sec[id="sec-p37"]{ --sec-acc:#0891b2; --sec-acc-d:#0e7490; --sec-acc-soft:#cffafe; }
 .sec[id="sec-p38"]{ --sec-acc:#0891b2; --sec-acc-d:#0e7490; --sec-acc-soft:#cffafe; }
 .sec[id="sec-p39"]{ --sec-acc:#0891b2; --sec-acc-d:#0e7490; --sec-acc-soft:#cffafe; }
 .sec[id="sec-p40"]{ --sec-acc:#0891b2; --sec-acc-d:#0e7490; --sec-acc-soft:#cffafe; }
 .sec[id="sec-final3"]{ --sec-acc:#0891b2; --sec-acc-d:#0e7490; --sec-acc-soft:#cffafe; }
 .sec{display:none;position:relative;animation:fadeIn .35s ease}
 .sec.active{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
 .sec-header{margin-bottom:22px;padding-bottom:14px;border-bottom:2px solid var(--sec-acc-soft,var(--pri-soft));position:relative;z-index:1}
 .sec-num{display:inline-block;padding:4px 10px;background:linear-gradient(135deg,var(--sec-acc,var(--pri)),var(--sec-acc-d,var(--pri2)));color:#fff;border-radius:7px;font-family:'Unbounded',sans-serif;font-size:.78rem;font-weight:800;letter-spacing:.04em;margin-bottom:8px}
 .sec-h{font-family:'Unbounded',sans-serif;font-size:1.6rem;font-weight:800;color:var(--sec-acc-d,var(--pri2));letter-spacing:-.01em;line-height:1.25}
 .card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px 20px;margin-bottom:16px;box-shadow:0 1px 3px rgba(0,0,0,.04),0 8px 24px rgba(0,0,0,.04);position:relative;z-index:1;transition:transform .25s cubic-bezier(.16,1,.3,1),box-shadow .25s}
 .card:hover{transform:translateY(-2px);box-shadow:0 4px 10px rgba(0,0,0,.06),0 16px 36px rgba(0,0,0,.08)}
 .card-header{display:flex;align-items:center;gap:10px;margin-bottom:12px;padding-bottom:10px;border-bottom:1px dashed var(--border)}
 .card-icon{width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:#fff}
 .card-icon.repeat{background:#0ea5e9}.card-icon.theory{background:#8b5cf6}.card-icon.algo{background:#f59e0b}.card-icon.rule{background:#ec4899}.card-icon.example{background:#10b981}.card-icon.oral{background:#06b6d4}
 .card-icon .ic{width:18px;height:18px}
 .card-title{font-family:'Unbounded',sans-serif;font-size:.82rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);flex:1}
 .card-num{font-size:.74rem;font-weight:700;color:var(--muted);background:var(--sec-acc-soft,var(--pri-soft));padding:3px 7px;border-radius:5px}
 .card-body{font-size:.94rem;line-height:1.65}
 .card-body p{margin-bottom:8px}
 .card-body p:last-child{margin-bottom:0}
 .btn{padding:8px 16px;border-radius:8px;background:var(--card);color:var(--text);border:1.5px solid var(--border);font-weight:600;font-size:.88rem;transition:background .15s,border-color .15s,transform .1s}
 .btn:hover{background:var(--sec-acc-soft,var(--pri-soft));border-color:var(--sec-acc,var(--pri))}
 .btn:active{transform:scale(.96)}
 .btn.primary{background:var(--sec-acc,var(--pri));color:#fff;border-color:var(--sec-acc,var(--pri))}
 .btn.primary:hover{background:var(--sec-acc-d,var(--pri2));border-color:var(--sec-acc-d,var(--pri2))}
 .feedback{padding:10px 14px;border-radius:9px;font-weight:600;font-size:.88rem;margin-top:8px;display:none}
 .feedback.ok{display:block;background:var(--ok-bg);color:#065f46;border-left:4px solid var(--ok)}
 .feedback.fail{display:block;background:var(--fail-bg);color:#7f1d1d;border-left:4px solid var(--fail)}
 .col-side{position:sticky;top:14px;align-self:start;height:fit-content;max-height:calc(100vh - 28px);overflow-y:auto}
 .sidecard{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px;margin-bottom:14px;box-shadow:var(--sh)}
 .sidecard h4{font-family:'Unbounded',sans-serif;font-size:.74rem;font-weight:800;color:var(--pri2);text-transform:uppercase;letter-spacing:.07em;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--border)}
 .sidecard-row{margin-bottom:8px;font-size:.86rem;line-height:1.6}
 .sidecard-row b{color:var(--pri);font-weight:700}
 .sidecard-row:last-child{margin-bottom:0}
@media(max-width:980px){.col-side{position:static;max-height:none}}
 .xp-card{background:linear-gradient(135deg,var(--acc-soft),var(--pri-soft));border:1.5px solid var(--acc);border-radius:12px;padding:14px;margin-bottom:14px}
 .xp-card-title{font-size:.68rem;font-weight:800;color:var(--acc2);text-transform:uppercase;letter-spacing:.07em;margin-bottom:8px;display:flex;align-items:center;justify-content:space-between}
 .xp-level{font-size:1.1rem;font-weight:900;color:var(--acc2);font-family:'Unbounded',sans-serif}
 .xp-bar{height:9px;background:rgba(0,0,0,.10);border-radius:6px;overflow:hidden;margin:7px 0}
 .xp-fill{height:100%;background:linear-gradient(90deg,var(--acc),var(--pri));border-radius:6px;transition:width .5s cubic-bezier(.4,0,.2,1)}
 .xp-nums{font-size:.74rem;color:var(--muted);display:flex;justify-content:space-between}
 .sec-nav{display:flex;gap:10px;margin-top:24px;padding-top:20px;border-top:1px solid var(--border);justify-content:space-between;flex-wrap:wrap}
 .foot{text-align:center;padding:30px 16px;color:var(--muted);font-size:.78rem;border-top:1px solid var(--border);margin-top:30px}
 .ach-popup{position:fixed;top:80px;right:18px;background:linear-gradient(135deg,var(--pri),var(--acc));color:#fff;padding:12px 18px;border-radius:11px;font-weight:700;font-size:.9rem;box-shadow:0 8px 28px rgba(0,0,0,.32);z-index:1002;display:none;align-items:center;gap:8px;max-width:340px}
 .ach-popup.show{display:flex}
 .col-side-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.42);z-index:9990;display:none}
 .col-side-backdrop.show{display:block}
@media(min-width:981px){#sidebar-btn{display:none}.col-side-backdrop.show{display:none}}
@media(max-width:980px){
  .col-side{position:fixed;top:0;right:0;height:100vh;width:300px;max-width:88vw;background:var(--bg);box-shadow:-12px 0 24px rgba(0,0,0,.18);padding:18px 16px;overflow-y:auto;transform:translateX(100%);transition:transform .25s ease;z-index:9991;max-height:none}
  .col-side.open{transform:none}
 }
 .search-modal{position:fixed;inset:0;background:rgba(15,23,42,.55);backdrop-filter:blur(4px);z-index:9993;display:none;align-items:flex-start;justify-content:center;padding-top:14vh}
 .search-modal.show{display:flex}
 .search-box{background:var(--bg);border:1px solid var(--border);border-radius:14px;width:560px;max-width:92vw;max-height:70vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 24px 64px rgba(0,0,0,.4)}
 .search-input{padding:14px 16px;font-size:1rem;border:0;border-bottom:1px solid var(--border);background:transparent;color:var(--text);outline:none}
 .search-results{flex:1;overflow-y:auto;padding:6px 0}
 .search-row{display:block;padding:8px 16px;cursor:pointer;border-bottom:1px solid var(--border);text-align:left;background:transparent;border:0;width:100%;color:var(--text)}
 .search-row:hover,.search-row.active{background:var(--sec-acc-soft,var(--pri-soft))}
 .search-row .sr-kind{font-size:.7rem;font-weight:800;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:2px}
 .search-row .sr-title{font-weight:700;font-size:.92rem;color:var(--text)}
 .search-row .sr-desc{font-size:.8rem;color:var(--muted);margin-top:2px}
 .search-empty{padding:20px;text-align:center;color:var(--muted);font-size:.88rem}
 .search-foot{padding:8px 14px;border-top:1px solid var(--border);font-size:.74rem;color:var(--muted);display:flex;gap:14px}
 .search-foot kbd{padding:2px 6px;background:var(--card);border:1px solid var(--border);border-radius:4px;font-family:'JetBrains Mono',monospace;font-size:.72rem}
 .sec{transition:opacity .25s}
 </style>
 </head>
 <body class="p8-theme-spectrum">
 <header class="p8-hero">
  <div class="p8-hero-wm"><svg viewBox="0 0 100 100" aria-hidden="true">
  <circle cx="50" cy="50" r="22" />
  <g><line x1="50" y1="8" x2="50" y2="22" stroke="currentColor" stroke-width="4" stroke-linecap="round"/>
  <line x1="50" y1="78" x2="50" y2="92" stroke="currentColor" stroke-width="4" stroke-linecap="round"/>
  <line x1="8" y1="50" x2="22" y2="50" stroke="currentColor" stroke-width="4" stroke-linecap="round"/>
  <line x1="78" y1="50" x2="92" y2="50" stroke="currentColor" stroke-width="4" stroke-linecap="round"/>
  <line x1="20" y1="20" x2="30" y2="30" stroke="currentColor" stroke-width="4" stroke-linecap="round"/>
  <line x1="70" y1="70" x2="80" y2="80" stroke="currentColor" stroke-width="4" stroke-linecap="round"/>
  <line x1="80" y1="20" x2="70" y2="30" stroke="currentColor" stroke-width="4" stroke-linecap="round"/>
  <line x1="30" y1="70" x2="20" y2="80" stroke="currentColor" stroke-width="4" stroke-linecap="round"/></g>
 </svg></div>
  <div class="p8-hero-meter" id="p8-meter-ch3"><span id="p8-meter-val">λ=550</span> нм</div>
  <div class="p8-hero-inner">
    <div class="p8-hero-eyebrow">Глава 3 · 9 параграфов</div>
    <h1 class="p8-hero-title">Световые явления</h1>
    <div class="p8-hero-sub">Лучи, тени, отражение, преломление, линзы, дисперсия, глаз. Перетаскивайте источники света и зеркала, наблюдайте за лучами и спектром.</div>
    <div class="hdr-side" style="margin-top:18px;display:flex;gap:8px;flex-wrap:wrap;position:relative;z-index:1">
      <a href="/textbook/physics-8" class="hdr-btn"><svg class="ic" viewBox="0 0 24 24"><polyline points="15 18 9 12 15 6"/></svg> К физике 8</a>
      <button id="search-btn" class="hdr-btn"><svg class="ic" viewBox="0 0 24 24"><circle cx="11" cy="11" r="7"/><path d="m21 21-4-4"/></svg> Поиск</button>
      <button id="sidebar-btn" class="hdr-btn"><svg class="ic" viewBox="0 0 24 24"><line x1="4" y1="6" x2="20" y2="6"/><line x1="4" y1="12" x2="20" y2="12"/><line x1="4" y1="18" x2="14" y2="18"/></svg> Шпаргалка</button>
      <button id="theme-btn" class="hdr-btn"><svg class="ic" viewBox="0 0 24 24"><path d="M21 12.8A9 9 0 1 1 11.2 3a7 7 0 0 0 9.8 9.8z"/></svg><span id="theme-lab">Тёмная</span></button>
    </div>
  </div>
 </header>
 <main class="main">
  <div class="col-main">
    <section class="hero">
      <h2>Световые явления — геометрическая оптика</h2>
      <p>Свет распространяется прямолинейно со скоростью $c = 3 \cdot 10^8$ м/с. Закон отражения и закон преломления (Снеллиуса) объясняют поведение пучков света. Линзы строят изображения; глаз — это оптическая система.</p>
      <div class="hero-row">
        <button class="btn-primary" onclick="goTo('p32')"><svg class="ic" viewBox="0 0 24 24"><polygon points="6 4 20 12 6 20 6 4" fill="currentColor" stroke="none"/></svg> Начать § 32</button>
        <div class="hero-progress">
          <span class="hp-label">Прогресс по главе</span>
          <div class="hp-bar"><div id="hero-hp-fill" class="hp-fill"></div></div>
          <span id="hero-hp-text" class="hp-text">0%</span>
        </div>
        <div id="hero-xp-badge" class="hero-xp-badge" data-gamified></div>
      </div>
    </section>
    <section class="psel">
      <div class="psel-title">Параграфы главы</div>
      <div id="psel-grid" class="psel-grid"></div>
    </section>
    <section id="sec-p32" class="sec">
  <div class="p8-sec-wm" id="p8-sec-wm-p32" aria-hidden="true"><svg viewBox="0 0 100 100"><circle cx="50" cy="50" r="14" fill="currentColor"/><g stroke="currentColor" stroke-width="4" stroke-linecap="round"><line x1="50" y1="14" x2="50" y2="26"/><line x1="50" y1="74" x2="50" y2="86"/><line x1="14" y1="50" x2="26" y2="50"/><line x1="74" y1="50" x2="86" y2="50"/></g></svg></div><div class="sec-header"><span class="sec-num">&sect; 32</span><h2 class="sec-h">Источники света</h2></div><div id="p32-body"></div></section>
    <section id="sec-p33" class="sec">
  <div class="p8-sec-wm" id="p8-sec-wm-p33" aria-hidden="true"><svg viewBox="0 0 100 100"><circle cx="32" cy="40" r="10" fill="currentColor"/><rect x="50" y="34" width="14" height="40" fill="currentColor"/><polygon points="68,40 92,30 92,80 68,70" fill="currentColor" opacity="0.5"/></svg></div><div class="sec-header"><span class="sec-num">&sect; 33</span><h2 class="sec-h">Скорость света. Прямолинейное распространение света</h2></div><div id="p33-body"></div></section>
    <section id="sec-p34" class="sec">
  <div class="p8-sec-wm" id="p8-sec-wm-p34" aria-hidden="true"><svg viewBox="0 0 100 100"><line x1="20" y1="20" x2="50" y2="50" stroke="currentColor" stroke-width="5"/><line x1="50" y1="50" x2="80" y2="20" stroke="currentColor" stroke-width="5"/><line x1="50" y1="50" x2="50" y2="90" stroke="currentColor" stroke-width="2" stroke-dasharray="4 4"/></svg></div><div class="sec-header"><span class="sec-num">&sect; 34</span><h2 class="sec-h">Отражение света</h2></div><div id="p34-body"></div></section>
    <section id="sec-p35" class="sec">
  <div class="p8-sec-wm" id="p8-sec-wm-p35" aria-hidden="true"><svg viewBox="0 0 100 100"><line x1="30" y1="20" x2="30" y2="80" stroke="currentColor" stroke-width="4"/><g stroke="currentColor" stroke-width="1.5"><line x1="30" y1="30" x2="22" y2="34"/><line x1="30" y1="45" x2="22" y2="49"/><line x1="30" y1="60" x2="22" y2="64"/><line x1="30" y1="75" x2="22" y2="79"/></g><circle cx="60" cy="50" r="6" fill="currentColor"/></svg></div><div class="sec-header"><span class="sec-num">&sect; 35</span><h2 class="sec-h">Зеркала. Изображение в плоском зеркале</h2></div><div id="p35-body"></div></section>
    <section id="sec-p36" class="sec">
  <div class="p8-sec-wm" id="p8-sec-wm-p36" aria-hidden="true"><svg viewBox="0 0 100 100"><path d="M30 20 Q 20 50, 30 80" stroke="currentColor" stroke-width="5" fill="none"/><line x1="48" y1="50" x2="70" y2="50" stroke="currentColor" stroke-width="2" stroke-dasharray="3 3"/><circle cx="70" cy="50" r="3" fill="currentColor"/></svg></div><div class="sec-header"><span class="sec-num">&sect; 36</span><h2 class="sec-h">Преломление света</h2></div><div id="p36-body"></div></section>
    <section id="sec-p37" class="sec">
  <div class="p8-sec-wm" id="p8-sec-wm-p37" aria-hidden="true"><svg viewBox="0 0 100 100"><line x1="20" y1="20" x2="50" y2="50" stroke="currentColor" stroke-width="5"/><line x1="50" y1="50" x2="80" y2="80" stroke="currentColor" stroke-width="5" stroke-dasharray="0"/><line x1="0" y1="50" x2="100" y2="50" stroke="currentColor" stroke-width="2"/></svg></div><div class="sec-header"><span class="sec-num">&sect; 37</span><h2 class="sec-h">Линзы. Оптическая сила линзы</h2></div><div id="p37-body"></div></section>
    <section id="sec-p38" class="sec">
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