KERN 디자인 시스템.

<!doctype html><html lang="en" data-kern-theme="light"><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>KERN workshop note</title><link rel="stylesheet" href="vendor/kern-2.8.2/kern.min.css"><link rel="stylesheet" href="vendor/kern-2.8.2/fonts/fira-sans.css"><style>body{margin:0;padding:clamp(16px,4vw,40px);color:var(--kern-color-layout-text-default)}main{max-width:800px;margin:auto;display:grid;gap:24px}.top,.actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center}.top{justify-content:space-between}.kern-dialog{max-width:min(560px,calc(100% - 32px))}textarea{width:100%;resize:vertical}#status{min-height:24px}.kern-details{width:100%}</style><main><div class="top"><span class="kern-preline">KERN · Native components</span><button class="kern-btn kern-btn--secondary" id="theme" aria-pressed="false"><span class="kern-label">Dark appearance</span></button></div><h1 class="kern-heading kern-heading--large">Workshop note</h1><p class="kern-body">Prepare a short note for your next workshop. This demonstration keeps edits only in this page.</p><div class="kern-form-input"><label class="kern-label" for="note">Your note</label><p class="kern-hint" id="hint">No personal information is needed. Nothing is submitted.</p><textarea class="kern-form-input__input" rows="5" id="note" aria-describedby="hint">Discuss accessible ways to collect workshop feedback.</textarea></div><details class="kern-details"><summary class="kern-details__header"><span class="kern-title kern-title--small">What happens to this note?</span></summary><div class="kern-details__body"><p class="kern-body">Edits live in this browser tab. Reloading restores the example text. Discarding clears the current note after confirmation; it does not delete a server record.</p></div></details><div class="actions"><button class="kern-btn kern-btn--primary" id="discard"><span class="kern-label">Discard note</span></button><button class="kern-btn kern-btn--secondary" id="restore"><span class="kern-label">Restore example</span></button></div><p id="status" class="kern-body" role="status"></p><dialog class="kern-dialog" id="confirm" aria-labelledby="confirm-title" aria-describedby="confirm-description"><header class="kern-dialog__header"><h2 class="kern-title kern-title--large" id="confirm-title">Discard this note?</h2></header><section class="kern-dialog__body"><p class="kern-body" id="confirm-description">Your current text will be cleared from this page. Choose Keep note to continue editing.</p></section><footer class="kern-dialog__footer"><button class="kern-btn kern-btn--secondary" id="keep" autofocus><span class="kern-label">Keep note</span></button><button class="kern-btn kern-btn--primary" id="clear"><span class="kern-label">Yes, discard</span></button></footer></dialog></main><script>const byId=id=>document.getElementById(id),note=byId('note'),modal=byId('confirm'),original=note.value;byId('discard').onclick=()=>modal.showModal();byId('keep').onclick=()=>modal.close('keep');byId('clear').onclick=()=>{note.value='';modal.close('discard');byId('status').textContent='Note discarded from this page.'};modal.addEventListener('close',()=>byId('discard').focus());byId('restore').onclick=()=>{note.value=original;byId('status').textContent='Example restored.';note.focus()};byId('theme').onclick=()=>{const dark=document.documentElement.dataset.kernTheme!=='dark';document.documentElement.dataset.kernTheme=dark?'dark':'light';byId('theme').setAttribute('aria-pressed',String(dark))};</script></html>