页面布局与响应式

课堂手账粘性侧栏布局

在课堂手账场景中完成粘性侧栏布局:包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。

页面布局与响应式粘性侧栏布局HTMLCSS GridResponsive Design
启用 JavaScript 后可编辑、运行和保存此案例。固定源码如下:
<!doctype html>
<html lang="zh-Hans" dir="ltr">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>课堂手账粘性侧栏布局</title>
  <style>
    :root { --ink:#3a2419; --paper:#fbf3df; --accent:#c66a2d; --secondary:#b5c88d; --line:color-mix(in srgb, var(--ink) 18%, transparent); --shadow:0 24px 60px color-mix(in srgb, var(--ink) 16%, transparent); color-scheme:light; }
    * { box-sizing:border-box; }
    html { min-width:320px; background:var(--paper); }
    body { min-height:100vh; margin:0; overflow-x:hidden; color:var(--ink); font-family:"Songti SC","Noto Serif SC",Georgia,serif; background:linear-gradient(90deg,transparent 49.7%,color-mix(in srgb,var(--ink) 7%,transparent) 50%,transparent 50.3%),var(--paper); }
    button,input,select,textarea { color:inherit; font:inherit; }
    button,[role="button"],input,select,textarea { accent-color:var(--accent); }
    button { cursor:pointer; }
    button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible { outline:3px solid var(--accent); outline-offset:3px; }
    [hidden] { display:none !important; }
    @media (max-width:700px) { .mast h1 { line-height:1.08 !important; letter-spacing:-.035em !important; overflow-wrap:anywhere; } }
    @media (prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto !important; animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; } }
    .page{width:min(1180px,calc(100% - 40px));margin:auto;padding:7vw 0}.mast{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(180px,.4fr);gap:5vw;align-items:end;margin-bottom:38px}.mast h1{font-family:"Songti SC",Georgia,serif;font-weight:800;font-size:clamp(42px,9vw,92px);max-width:920px;margin:0;line-height:.94}.eyebrow{display:block;margin-bottom:14px;color:var(--accent);font:800 11px/1 ui-monospace,monospace;letter-spacing:.24em}.intro{max-width:58ch;line-height:1.9}.scenario{align-self:start;padding-top:10px;border-top:1px solid var(--ink);font-style:italic}.demo{border-radius:0;border-width:2px;box-shadow:14px 14px 0 color-mix(in srgb,var(--ink) 18%,transparent);position:relative;overflow:hidden;min-height:420px;padding:clamp(22px,4vw,48px);background:var(--paper)}@media(max-width:700px){.page{width:calc(100% - 22px);padding:26px 0}.mast{grid-template-columns:1fr}.demo{min-height:340px;padding:18px}}
    .panel{padding:16px;border:3px double var(--accent);background:var(--paper)}.stack{display:grid;gap:14px}.row{display:grid;grid-auto-flow:column;grid-auto-columns:max-content;gap:10px;overflow:auto}.action{padding:10px 15px;border:1px solid var(--accent);background:transparent;font-family:Didot,serif;letter-spacing:.06em}.action.primary,.action.is-active{color:var(--paper);background:var(--ink)}.metric{font-family:Didot,serif;font-size:clamp(36px,8vw,74px);letter-spacing:.04em}.status{min-height:24px;padding:9px;border-inline:1px solid var(--accent);text-align:center}.muted{line-height:1.8}.chip{padding:5px 14px;border-inline:1px solid var(--accent);letter-spacing:.1em}.meter{height:5px;background:var(--line)}.meter>i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--secondary))}
    .composition-index{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px}.index-mark{display:grid;align-content:space-between;width:76px;padding:16px 10px;border:1px solid var(--line);color:var(--accent);background:color-mix(in srgb,var(--paper) 82%,transparent);text-align:center}.index-mark strong{font:900 34px/1 ui-monospace,monospace}.index-mark span{writing-mode:vertical-rl;font:800 10px/1.2 ui-monospace,monospace;letter-spacing:.18em}.composition-index .demo{grid-column:1;grid-row:1}.composition-index::before{content:"";position:absolute;left:-12px;top:38px;width:5px;height:45%;background:linear-gradient(var(--accent),var(--secondary))}@media(max-width:700px){.composition-index{grid-template-columns:1fr}.index-mark{grid-row:1;width:auto;grid-template-columns:auto 1fr}.index-mark span{writing-mode:horizontal-tb}.composition-index .demo{grid-row:2}}
    .sticky-aside-demo{display:grid;grid-template-columns:220px 1fr;gap:20px;height:430px;overflow:auto;border:1px solid var(--line);border-radius:18px;background:var(--paper)}.sticky-aside-demo>aside{position:sticky;top:0;align-self:start;padding:22px;background:var(--ink);color:var(--paper)}.sticky-aside-demo>aside h2{margin:.4em 0}.sticky-aside-demo nav{display:grid;gap:8px}.sticky-aside-demo nav a{color:inherit}.sticky-aside-demo>article{padding:12px 28px}.sticky-aside-demo section{min-height:300px;padding:30px 0;border-bottom:1px solid var(--line);line-height:1.8}@media(max-width:620px){.sticky-aside-demo{grid-template-columns:1fr}.sticky-aside-demo>aside{z-index:2}.sticky-aside-demo nav{grid-auto-flow:column;overflow:auto}}.workflow-spatial{display:grid;gap:16px}.workflow-spatial>header{display:grid;grid-template-columns:1fr minmax(170px,.35fr) minmax(170px,.35fr);gap:18px;align-items:end;padding-bottom:16px;border-bottom:5px solid var(--ink)}.workflow-spatial h2{margin:.2em 0}.workflow-spatial header label{display:grid;grid-template-columns:1fr auto;gap:7px}.workflow-spatial header input{grid-column:1/-1;width:100%}.spatial-grid{display:grid;grid-template-columns:minmax(0,var(--spatial-width)) 20px minmax(180px,1fr);gap:0;align-items:stretch}.spatial-core{min-width:0;transform:scale(var(--spatial-zoom));transform-origin:top left;transition:transform .2s}.spatial-handle{display:grid;min-height:300px;place-items:center;border:0;border-inline:1px dashed var(--accent);background:color-mix(in srgb,var(--accent) 10%,transparent);cursor:col-resize}.spatial-grid>aside{display:grid;align-content:center;gap:14px;padding:22px;background:color-mix(in srgb,var(--secondary) 14%,var(--paper))}.spatial-grid>aside strong{font-size:clamp(24px,4vw,42px)}@media(max-width:900px){.workflow-spatial>header{grid-template-columns:1fr}.spatial-grid{order:-1;grid-template-columns:1fr}.spatial-handle{min-height:44px;cursor:row-resize}.spatial-core{transform:none}}
  </style>
</head>
<body data-aesthetic="editorial" data-composition="field-index">
  <main class="page">
    <header class="mast"><div><span class="eyebrow">editorial / 粘性侧栏布局 / INTERMEDIATE</span><h1>课堂手账粘性侧栏布局</h1><p class="intro">在课堂手账场景中完成粘性侧栏布局:包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。</p></div><span class="scenario">课堂手账</span></header>
    <div class="composition-index"><section class="demo" aria-label="课堂手账粘性侧栏布局交互区域"><div id="workflowSpatial" class="workflow-spatial" style="--spatial-width:64%;--spatial-zoom:1"><header><div><span class="eyebrow">课堂手账 SPATIAL CANVAS</span><h2>课堂手账调整台</h2></div><label>画布宽度占比<input id="workflowSpatialWidth" type="range" min="38" max="82" value="64"><output id="workflowSpatialWidthValue">64%</output></label><label>内容缩放<input id="workflowSpatialZoom" type="range" min="80" max="120" value="100"><output id="workflowSpatialZoomValue">100%</output></label></header><div class="spatial-grid"><section id="workflowCore" class="workflow-core spatial-core"><!-- 11DZ_CORE_START:layouts-responsive-sticky-aside --><div class="sticky-aside-demo" data-core-bridge="layouts-responsive-sticky-aside" tabindex="0"><aside><span class="eyebrow">STICKY ASIDE</span><h2>课堂手账目录</h2><nav><a href="#stickySection0">课堂手账记录</a><a href="#stickySection1">课堂手账协作</a><a href="#stickySection2">课堂手账进度</a><a href="#stickySection3">课堂手账提醒</a></nav></aside><article id="stickyScroller" tabindex="0"><section id="stickySection0"><h3>课堂手账记录</h3><p>滚动内容用于观察侧栏在容器内保持可见。滚动内容用于观察侧栏在容器内保持可见。滚动内容用于观察侧栏在容器内保持可见。</p></section><section id="stickySection1"><h3>课堂手账协作</h3><p>滚动内容用于观察侧栏在容器内保持可见。滚动内容用于观察侧栏在容器内保持可见。滚动内容用于观察侧栏在容器内保持可见。</p></section><section id="stickySection2"><h3>课堂手账进度</h3><p>滚动内容用于观察侧栏在容器内保持可见。滚动内容用于观察侧栏在容器内保持可见。滚动内容用于观察侧栏在容器内保持可见。</p></section><section id="stickySection3"><h3>课堂手账提醒</h3><p>滚动内容用于观察侧栏在容器内保持可见。滚动内容用于观察侧栏在容器内保持可见。滚动内容用于观察侧栏在容器内保持可见。</p></section></article></div><!-- 11DZ_CORE_END --></section><input id="workflowSpatialHandle" class="spatial-handle" type="button" value="↔" aria-label="拖动调整主案例预览宽度"><aside><strong>课堂手账紧凑布局</strong><p>课堂手账均衡布局与课堂手账沉浸布局会随画布尺寸重新编排。</p><output id="workflowSpatialStatus">宽度 64%,缩放 100%</output><input id="workflowSpatialApply" class="action primary" type="button" value="应用布局"></aside></div></div><p id="status" class="status" role="status" aria-live="polite"></p></section><aside class="index-mark" aria-hidden="true"><strong>05</strong><span>课堂手账 FIELD INDEX</span></aside></div>
  </main>
  <script>
    'use strict';
    const statusOutput = document.querySelector('#status');
    const announce = message => { statusOutput.textContent = message; };
    /* 11DZ_CORE_SCRIPT_START:layouts-responsive-sticky-aside */
document.querySelectorAll('.sticky-aside-demo a').forEach(link=>link.addEventListener('click',event=>{event.preventDefault();document.querySelector(link.getAttribute('href')).scrollIntoView({behavior:matchMedia('(prefers-reduced-motion:reduce)').matches?'auto':'smooth'});announce('已定位 '+link.textContent);}));
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"layouts-responsive-sticky-aside","selector":"[data-core-bridge=\"layouts-responsive-sticky-aside\"]","mode":"scroll","key":"ArrowDown"};const workflowBridgeCore=document.querySelector('#workflowCore');const workflowBridgeControl=workflowBridgeCore.querySelector(workflowBridgeSpec.selector);if(!workflowBridgeControl)throw new Error('Missing core bridge: '+workflowBridgeSpec.name);const workflowBridgeControlledId=workflowBridgeControl.getAttribute('aria-controls');const workflowBridgeControlled=workflowBridgeControlledId?document.getElementById(workflowBridgeControlledId):null;workflowBridgeCore.dataset.workflowBridge=workflowBridgeSpec.name;workflowBridgeCore.dataset.workflowVersion='0';function workflowBridgeSerialize(){const visualNode=workflowBridgeCore.firstElementChild||workflowBridgeCore;const visual=getComputedStyle(visualNode);const outputs=[...workflowBridgeCore.querySelectorAll('output,[role="status"],[aria-live],meter,progress')].map(node=>node.textContent.trim()+'|'+node.getAttribute('aria-valuenow')+'|'+node.getAttribute('value'));const canvas=[...workflowBridgeCore.querySelectorAll('canvas')].map(node=>{try{return node.toDataURL().slice(-160);}catch{return 'canvas-unavailable';}});return JSON.stringify({html:workflowBridgeCore.innerHTML,status:statusOutput.textContent,outputs,canvas,visual:[visual.display,visual.visibility,visual.opacity,visual.transform,visual.filter,visual.backgroundColor,visual.width,visual.height],scroll:workflowBridgeSpec.mode==='scroll'?workflowBridgeControl.scrollTop:null});}let workflowBridgeLastEffect=workflowBridgeSerialize();function workflowBridgeSummary(){const label=(workflowBridgeControl.getAttribute('aria-label')||workflowBridgeControl.textContent||workflowBridgeControl.value||workflowBridgeSpec.name).trim().replace(/\s+/g,' ').slice(0,72);return label+' · 核心版本 '+workflowBridgeCore.dataset.workflowVersion;}function workflowBridgeCommit(){const effect=workflowBridgeSerialize();if(effect===workflowBridgeLastEffect)return {changed:false,summary:workflowBridgeSummary()};workflowBridgeLastEffect=effect;workflowBridgeCore.dataset.workflowVersion=String(Number(workflowBridgeCore.dataset.workflowVersion||0)+1);return {changed:true,summary:workflowBridgeSummary()};}function workflowBridgeScheduleCommit(){queueMicrotask(workflowBridgeCommit);setTimeout(workflowBridgeCommit,0);}workflowBridgeControl.addEventListener("scroll",workflowBridgeScheduleCommit);const workflowBridgeStateTargets=new Set(workflowBridgeCore.querySelectorAll('dialog'));if(workflowBridgeControlled&&workflowBridgeCore.contains(workflowBridgeControlled))workflowBridgeStateTargets.add(workflowBridgeControlled);workflowBridgeStateTargets.forEach(target=>['close','cancel','toggle'].forEach(eventName=>target.addEventListener(eventName,workflowBridgeScheduleCommit)));function workflowBridgeActivate(){workflowBridgeControl.focus();const limit=Math.max(1,workflowBridgeControl.scrollHeight-workflowBridgeControl.clientHeight);workflowBridgeControl.scrollTop=workflowBridgeControl.scrollTop>0?0:Math.min(limit,72);workflowBridgeControl.dispatchEvent(new Event('scroll',{bubbles:true}));const result=workflowBridgeCommit();setTimeout(workflowBridgeCommit,0);return result;}function workflowBridgeReset(){workflowBridgeCore.dataset.workflowVersion='0';workflowBridgeLastEffect=workflowBridgeSerialize();}
const workflowSpatial=document.querySelector('#workflowSpatial');const workflowSpatialCore=document.querySelector('#workflowCore');const workflowSpatialWidth=document.querySelector('#workflowSpatialWidth');const workflowSpatialZoom=document.querySelector('#workflowSpatialZoom');const workflowSpatialHandle=document.querySelector('#workflowSpatialHandle');const workflowSpatialState={width:64,zoom:1,dragging:false};function workflowSpatialDrive(){workflowSpatial.style.setProperty('--spatial-width',workflowSpatialState.width+'%');workflowSpatial.style.setProperty('--spatial-zoom',String(workflowSpatialState.zoom));workflowSpatialWidth.value=String(workflowSpatialState.width);workflowSpatialZoom.value=String(Math.round(workflowSpatialState.zoom*100));document.querySelector('#workflowSpatialWidthValue').textContent=workflowSpatialState.width+'%';document.querySelector('#workflowSpatialZoomValue').textContent=Math.round(workflowSpatialState.zoom*100)+'%';document.querySelector('#workflowSpatialStatus').textContent='宽度 '+workflowSpatialState.width+'%,缩放 '+Math.round(workflowSpatialState.zoom*100)+'%';announce('课堂手账画布已重排');}workflowSpatialWidth.addEventListener('input',()=>{workflowSpatialState.width=Number(workflowSpatialWidth.value);workflowSpatialDrive();});workflowSpatialZoom.addEventListener('input',()=>{workflowSpatialState.zoom=Number(workflowSpatialZoom.value)/100;workflowSpatialDrive();});workflowSpatialHandle.addEventListener('pointerdown',event=>{workflowSpatialState.dragging=true;workflowSpatialHandle.setPointerCapture(event.pointerId);});workflowSpatialHandle.addEventListener('pointermove',event=>{if(!workflowSpatialState.dragging)return;const rect=workflowSpatial.getBoundingClientRect();workflowSpatialState.width=Math.max(38,Math.min(82,Math.round((event.clientX-rect.left)/rect.width*100)));workflowSpatialDrive();});workflowSpatialHandle.addEventListener('pointerup',event=>{workflowSpatialState.dragging=false;workflowSpatialHandle.releasePointerCapture(event.pointerId);});workflowSpatialHandle.addEventListener('wheel',event=>{event.preventDefault();workflowSpatialState.zoom=Math.max(.8,Math.min(1.2,workflowSpatialState.zoom+(event.deltaY<0?.05:-.05)));workflowSpatialDrive();},{passive:false});workflowSpatialHandle.addEventListener('keydown',event=>{if(!['ArrowLeft','ArrowRight'].includes(event.key))return;event.preventDefault();workflowSpatialState.width=Math.max(38,Math.min(82,workflowSpatialState.width+(event.key==='ArrowRight'?2:-2)));workflowSpatialDrive();});document.querySelector('#workflowSpatialApply').addEventListener('click',()=>{const bridge=workflowBridgeActivate();document.querySelector('#workflowSpatialStatus').textContent='已应用布局 · 宽度 '+workflowSpatialState.width+'%,缩放 '+Math.round(workflowSpatialState.zoom*100)+'% · '+bridge.summary;announce(document.querySelector('#workflowSpatialStatus').textContent);});workflowSpatialDrive();
workflowBridgeReset();
  </script>
</body>
</html>
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