@import url('https://fonts.googleapis.com/css2?family=Gowun+Dodum&family=Noto+Sans+KR:wght@400;500;600;700;800&display=swap');
:root{font-family:'Noto Sans KR',system-ui,sans-serif;color:#45493f;background:#fbf9f3;font-synthesis:none;--ink:#45493f;--muted:#62695e;--line:#dfE3d7;--green:#506e48;--paper:#fffef9;--yellow:#f9e9b5;--blue:#6a739a;--red:#a36550}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 95% 0,#f8eadc70,transparent 35%),#fbf9f3}button,input,select,textarea{font:inherit}button,a,input,summary{touch-action:manipulation}button,summary{cursor:pointer}button{color:inherit}button:disabled{cursor:default;opacity:.5}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #7a6098;outline-offset:4px}input[type=radio],input[type=checkbox],input[type=range]{accent-color:var(--green)}h1,h2,h3,h4,p{margin:0}[hidden]{display:none!important}main{max-width:1120px;margin:auto;padding:0 28px}.topbar{max-width:1120px;margin:auto;padding:20px 28px 0;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:9px;text-decoration:none;font-size:13px;font-weight:800}.brand-icon{display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:#e5ebdd;color:#506e48;font-size:19px}.brand-tail{font-weight:400;color:var(--muted);font-size:12px}.edition{color:#687560;font-family:'Gowun Dodum',sans-serif;font-size:14px}.hero{display:grid;grid-template-columns:1fr 230px;align-items:center;gap:30px;padding:32px 4px 27px}.eyebrow{font-size:12px;font-weight:600;color:#747961;margin-bottom:12px;letter-spacing:.02em}h1{font-family:'Gowun Dodum',sans-serif;font-size:36px;line-height:1.45;letter-spacing:-.04em;font-weight:600;word-break:keep-all}h1 em{font-style:normal;color:var(--green)}.lead{font-size:14px;line-height:1.9;color:var(--muted);margin-top:13px;word-break:keep-all}.welcome-art svg{display:block;width:100%;height:150px}.welcome-art p{text-align:center;font-size:12px;font-family:'Gowun Dodum',sans-serif;color:#6d7b60;transform:rotate(-2deg)}.category-intro{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px;padding:0 4px}.category-intro p{font-size:15px;font-weight:600}.category-intro span{font-size:12px;color:var(--muted)}.category-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;scroll-margin-top:20px}.category-nav button{display:flex;align-items:center;gap:14px;border:1px solid #dfe4d6;border-radius:18px;padding:18px;background:#f0f3e9;text-align:left;position:relative;transition:transform .15s,box-shadow .15s;min-width:0}.category-nav button:nth-child(2){background:#f9eee4;border-color:#edddce}.category-nav button:nth-child(3){background:#f1edf6;border-color:#e4ddee}.category-nav button:hover{transform:translateY(-2px)}.category-nav button[aria-selected=true]{border:2px solid #658258;padding:17px;box-shadow:0 4px 0 #dfe5d5}.category-nav button:nth-child(2)[aria-selected=true]{border-color:#a86b50;box-shadow:0 4px 0 #f0decd}.category-nav button:nth-child(3)[aria-selected=true]{border-color:#85709c;box-shadow:0 4px 0 #e6dfef}.category-nav b{display:block;font-size:15px;line-height:1.6;font-weight:700;word-break:keep-all}.category-nav small{display:block;color:var(--muted);font-size:11px;margin-top:4px;line-height:1.5;word-break:keep-all}.category-icon{font-size:25px;color:#718760;flex-shrink:0}.category-nav button:nth-child(2) .category-icon{color:#a56a4c}.category-nav button:nth-child(3) .category-icon{color:#89779b}.learning-hint{font-size:12px;line-height:1.8;color:var(--muted);margin:15px 4px 0}.guide-section{margin-top:28px}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px;padding:0 4px}.section-kicker{font-size:11px;color:#798170;margin-bottom:4px}.section-heading h2{font-family:'Gowun Dodum',sans-serif;font-size:22px;line-height:1.5}.group-count{font-size:11px;color:#727b67;white-space:nowrap}.item-picker{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-bottom:18px}.item-picker button{border:1px solid #e0e3d9;border-radius:12px;padding:12px 9px;background:#fffefa;min-width:0;text-align:left;transition:background .15s}.item-picker span{display:block;font-size:13px;font-weight:600;line-height:1.6}.item-picker small{display:block;font-size:11px;color:var(--muted);line-height:1.5;margin-top:3px}.item-picker button[aria-pressed=true]{background:#e8efdf;border:1px solid #9baf8b;box-shadow:inset 0 -3px 0 #aabf94}.item-picker button:hover{background:#f0f3e9}.ui-grid{display:block}.ui-card{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.9fr);border:1px solid #e0e3d7;border-radius:24px;background:#fffefa;box-shadow:0 6px 24px #63695409;overflow:hidden}.lesson-main{padding:27px 30px}.lesson-notes{position:relative;margin:14px;padding:29px 24px 22px;border-radius:18px;background:#f9f1df;min-width:0;align-self:stretch}.note-flower{display:block;color:#bd8f52;font-size:25px;line-height:1;margin-bottom:12px}.lesson-notes h4{font-family:'Gowun Dodum',sans-serif;font-size:20px;line-height:1.6;margin-bottom:10px}.card-heading{display:flex;align-items:center;gap:12px}.card-index{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;background:#eef2e6;color:#748267;font-size:12px;font-weight:700}.card-heading h3{font-size:23px;line-height:1.5;letter-spacing:-.025em}.english{font-size:11px;color:#7b8375;margin-top:2px}.play-label{margin-left:auto;white-space:nowrap;font-size:11px;border-radius:99px;background:#f0f3e9;color:#6e7b62;padding:6px 9px}.use-case{font-size:15px;font-weight:600;line-height:1.7;margin:20px 0 7px}.explain{font-size:14px;line-height:1.9;color:var(--muted);word-break:keep-all}.demo-well{background:#f1f5ea;border:1px solid #dfe6d7;border-radius:17px;padding:22px;margin:20px 0 14px;min-height:195px;display:flex;flex-direction:column;justify-content:center;gap:14px;position:relative}.try-label{font-size:13px;line-height:1.9;color:var(--green);word-break:keep-all}.try-label>span{font-size:18px;margin-right:4px}.small-tip{font-size:13px;line-height:1.9;color:#6a624e;word-break:keep-all;margin:0 0 22px}.prompt-disclosure{border:1px solid #e1cfa9;border-radius:13px;background:#fffaf0;overflow:hidden}.prompt-disclosure>summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 15px;font-size:14px;font-weight:600;color:#766036}.prompt-disclosure>summary::-webkit-details-marker,.combine-wrap>summary::-webkit-details-marker{display:none}.disclosure-mark{font-size:20px;line-height:1;transition:transform .2s}.prompt-disclosure[open]>summary .disclosure-mark,.combine-wrap[open]>summary .disclosure-mark{transform:rotate(45deg)}.prompt-disclosure[open]>summary{border-bottom:1px solid #ecdfc6}.prompt-paper{padding:15px;min-width:0}.paper-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}.paper-head label{font-size:12px;color:#756443;line-height:1.6}.copy-button{border:1px solid #d8c294;border-radius:9px;background:#f9ebc8;color:#725a2c;font-size:12px;font-weight:600;padding:8px 11px;min-height:38px;white-space:nowrap}.copy-button:hover{background:#f3dfad}.prompt-paper textarea{display:block;box-sizing:border-box;width:100%;min-height:130px;background:#fffef8;border:1px solid #e6d9bd;border-radius:10px;padding:12px;font-size:13px;line-height:1.9;color:#524b3e;resize:vertical}.prompt-foot{font-size:12px;line-height:1.9;color:#7b735f;margin:15px 0 0;word-break:keep-all}.copy-status{font-size:12px;line-height:1.8;color:#4e6a41;margin-top:10px}.copy-status:empty{display:none}.lesson-navigation{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:19px 4px 0}.lesson-navigation button{border:1px solid #dce1d3;border-radius:99px;background:#fffef8;padding:10px 16px;font-size:13px;min-height:42px}.lesson-navigation button:hover:not(:disabled){background:#eaf0e0}.lesson-navigation p{font-size:12px;color:#6a7460;line-height:1.7;text-align:center}.combine-wrap{margin-top:29px;background:#f2f0e9;border:1px solid #e3dfd3;border-radius:17px}.combine-wrap>summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:15px;padding:19px 22px}.combine-wrap summary b{display:block;font-size:14px;font-weight:600}.combine-wrap summary small{display:block;font-size:12px;color:var(--muted);margin-top:6px;line-height:1.7}.combine{display:grid;grid-template-columns:1fr 1.15fr;gap:25px;padding:5px 25px 25px;align-items:center}.combine h2{font-family:'Gowun Dodum',sans-serif;font-size:25px;line-height:1.6;letter-spacing:-.02em}.combine-intro>p:not(.eyebrow){font-size:13px;line-height:1.9;color:var(--muted);margin-top:13px}.combine-intro .eyebrow{font-size:11px}.recipe{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-top:17px}.recipe span{background:#fffef9;border:1px solid #dedccc;border-radius:8px;padding:7px;font-size:11px}.recipe i{font-style:normal;font-size:13px;color:var(--green)}.combined-paper{border:1px solid #e4d3b2;border-radius:13px;background:#fff6e1}.combined-paper textarea{min-height:240px}footer{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:27px 0;font-size:11px;color:#7a806f}footer a{text-decoration:none}.help{font-size:12px;line-height:1.8;color:var(--muted)}

.demo-well fieldset{border:0;margin:0;padding:0;min-width:0}.demo-well legend,.field-title{font-weight:700;font-size:13px;margin-bottom:11px}.option-row{display:flex;flex-wrap:wrap;gap:10px}.choice{display:flex;align-items:center;gap:8px;background:white;border:1px solid #c4d0c9;border-radius:7px;padding:10px 13px;font-size:14px;cursor:pointer;min-height:44px;box-shadow:0 2px 0 #c5cec34d}.choice:has(input:checked){border-color:#36846c;background:#e5f4ea;box-shadow:inset 0 0 0 1px #36846c}.choice input{width:17px;height:17px;margin:0}.switch-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;font-weight:700}.switch{width:52px;height:30px;border:1px solid #8a9690;border-radius:99px;padding:3px;background:#9ba8a1;flex-shrink:0;transition:background .18s}.switch span{display:block;background:white;width:22px;height:22px;border-radius:50%;box-shadow:0 1px 3px #0003;transition:transform .18s}.switch[aria-checked=true]{background:var(--green);border-color:var(--green)}.switch[aria-checked=true] span{transform:translateX(21px)}.help-bubble{padding:12px;background:#fff;border:1px solid #d4dfd7;border-radius:7px;font-size:13px;line-height:1.7}.off-note{font-size:13px;color:var(--muted)}[hidden]{display:none!important}.range-row{display:flex;justify-content:space-between;gap:15px;font-size:13px;font-weight:700}.range-row output{color:var(--green);font-variant-numeric:tabular-nums}.demo-well input[type=range]{width:100%;margin:0;min-height:24px}.size-preview{background:white;border:1px solid #d5dfd8;border-radius:8px;padding:14px;overflow-wrap:anywhere;line-height:1.6}.sample-card{display:grid;grid-template-columns:56px 1fr auto;align-items:center;gap:13px;background:#fff;border:1px solid #d4dacf;border-radius:10px;padding:17px;box-shadow:0 4px 7px #26344214}.sample-art{display:grid;place-items:center;width:56px;height:64px;border-radius:8px;background:#e7edfc;color:var(--blue);font-size:26px;font-weight:700}.sample-card h4{font-size:15px;margin:0 0 5px}.sample-card p{font-size:12px;color:var(--muted);line-height:1.7}.demo-button{border:1px solid #253f35;background:var(--green);color:white;padding:10px 15px;border-radius:7px;font-size:13px;font-weight:700;min-height:40px;box-shadow:0 3px 0 #174b3e}.demo-button:hover{background:#115442}.demo-button:active{transform:translateY(2px);box-shadow:0 1px 0 #174b3e}.demo-button.secondary{background:white;color:var(--ink);border-color:#b5c0b8;box-shadow:0 2px 0 #cad3ca}.sample-card .demo-button{padding:8px 10px;font-size:12px;min-width:55px}.sample-card.chosen{border:2px solid var(--green);padding:16px}.sample-accordion{border:1px solid #c4cec6;border-radius:7px;background:#fff;overflow:hidden}.sample-accordion summary{font-size:14px;font-weight:600;padding:14px;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:48px;background:linear-gradient(#fff,#f4f5f1)}.sample-accordion summary::-webkit-details-marker{display:none}.sample-accordion summary:after{content:'+';font-size:20px;color:var(--green)}.sample-accordion[open] summary:after{content:'−'}.sample-accordion p{padding:14px;border-top:1px solid #dde2da;font-size:13px;line-height:1.8;color:var(--muted)}.tabs{display:flex;gap:4px;border-bottom:1px solid #b7c9bd}.tabs button{flex:1;border:1px solid transparent;border-bottom:0;border-radius:7px 7px 0 0;background:transparent;color:#56695d;padding:11px 5px;font-size:13px}.tabs button[aria-selected=true]{background:white;border-color:#b7c9bd;font-weight:700;color:var(--green)}.tab-panel{margin-top:-14px;padding:17px;background:white;border:1px solid #cbd7cc;border-top:0;border-radius:0 0 8px 8px;font-size:14px;line-height:1.8;min-height:68px}.modal-demo{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:19px;background:white;border:1px solid #d5dbd0;border-radius:8px}.modal-demo p{font-size:13px;line-height:1.7}.modal-demo .demo-button{flex-shrink:0}.demo-field{display:grid;gap:8px;font-size:13px;font-weight:700}.demo-field input,.demo-field select{border:1px solid #afbeb4;background:white;color:var(--ink);border-radius:7px;padding:11px 12px;width:100%;min-width:0;font-size:14px}.field-meta{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:var(--muted);margin-top:7px}.demo-form .demo-button{margin-top:12px}.field-error{color:#a5362a}.input-preview{padding:10px;background:white;border-radius:6px;margin-top:10px;font-size:14px;overflow-wrap:anywhere}.mini-list{list-style:none;padding:0;margin:0;display:grid;gap:6px}.mini-list li{background:white;border:1px solid #d5dfd7;border-radius:5px;padding:9px 12px;font-size:13px;display:flex;justify-content:space-between;gap:12px}.mini-list small{color:var(--muted);font-size:11px}.mini-nav{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--ink);color:white;border-radius:8px 8px 0 0;padding:13px 12px}.mini-logo{font-size:12px;font-weight:800;letter-spacing:.08em}.mini-menu{display:flex;gap:4px}.mini-menu button{font-size:12px;border:0;border-radius:5px;background:transparent;color:#f4f7f5;padding:8px 9px}.mini-menu button[aria-current=page]{background:var(--yellow);color:var(--ink);font-weight:700}.nav-page{background:white;margin-top:-14px;padding:18px;border:1px solid #d5ded7;border-top:0;border-radius:0 0 8px 8px;min-height:80px}.nav-page h4{font-size:15px;margin:0 0 6px}.nav-page p{font-size:12px;color:var(--muted);line-height:1.8}.toast-stage{display:flex;flex-direction:column;align-items:center;gap:15px;min-height:116px;justify-content:center}.example-toast{display:flex;align-items:center;justify-content:space-between;gap:14px;border-radius:8px;padding:12px 14px;background:var(--ink);color:white;font-size:13px;box-shadow:0 4px 8px #0002;width:100%}.example-toast button{border:0;background:transparent;color:white;font-size:22px;padding:0 5px;line-height:1.2}
dialog{padding:26px;border:1px solid #b6c7bb;border-radius:16px;background:#fffef9;max-width:min(460px,calc(100vw - 32px));width:100%;color:var(--ink);box-shadow:0 24px 100px #0004}dialog::backdrop{background:#182c3db3}dialog h2{font-size:23px;margin:18px 0 14px;line-height:1.5}dialog p{font-size:14px;line-height:1.9}dialog .help{font-size:12px;color:var(--muted);margin:12px 0 20px}.dialog-heading{display:flex;align-items:center;justify-content:space-between}.mini-tag{font-size:12px;background:#e6f1e9;color:var(--green);border-radius:4px;padding:5px 8px}.icon-button{border:1px solid #d1d8cd;border-radius:7px;background:white;font-size:24px;width:38px;height:38px}.help{color:var(--muted);font-size:12px;line-height:1.8}
@media(max-width:900px){.lesson-main{padding:24px}.lesson-notes{padding:23px 19px}.ui-card{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr)}.category-nav button{gap:10px;padding:15px}.category-nav button[aria-selected=true]{padding:14px}.category-nav b{font-size:14px}.category-icon{font-size:22px}.sample-card{grid-template-columns:42px 1fr}.sample-art{width:42px}.sample-card .demo-button{grid-column:1/-1}.hero{grid-template-columns:1fr 185px}h1{font-size:32px}.welcome-art svg{height:135px}.card-heading h3{font-size:21px}.play-label{display:none}}
@media(max-width:700px){main{padding:0 17px}.topbar{padding:16px 17px 0}.brand{font-size:12px;gap:7px}.brand-tail{font-size:11px}.edition{display:none}.hero{display:block;padding:29px 2px 25px}.hero h1{font-size:28px}.hero .eyebrow{font-size:11px}.lead{font-size:13px}.welcome-art{display:none}.category-intro{align-items:start;gap:10px}.category-intro p{font-size:14px}.category-intro span{font-size:11px;max-width:100px;line-height:1.6;text-align:right}.category-nav{gap:7px;scroll-margin-top:14px}.category-nav button,.category-nav button[aria-selected=true]{display:block;text-align:center;padding:12px 6px;border-width:1px;border-radius:14px}.category-nav button[aria-selected=true]{outline:1px solid #658258;outline-offset:-2px}.category-nav button:nth-child(2)[aria-selected=true]{outline-color:#a86b50}.category-nav button:nth-child(3)[aria-selected=true]{outline-color:#85709c}.category-icon{display:block;font-size:23px;margin-bottom:5px}.category-nav b{font-size:12px;line-height:1.7}.category-nav small{display:none}.learning-hint{font-size:11px;margin-top:12px}.guide-section{margin-top:23px}.section-heading{margin-bottom:13px}.section-heading h2{font-size:20px}.section-kicker{font-size:10px}.group-count{font-size:10px}.item-picker{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;margin-bottom:13px}.item-picker button{padding:10px 12px}.item-picker span{font-size:13px}.item-picker small{font-size:11px}.ui-card{grid-template-columns:1fr;border-radius:20px}.lesson-main{padding:23px 20px 13px}.lesson-notes{margin:5px 12px 12px;padding:20px;border-radius:15px}.note-flower{float:left;margin-right:10px;margin-bottom:0;font-size:23px;line-height:1.5}.lesson-notes h4{font-size:19px;margin-bottom:10px}.small-tip{font-size:13px;margin-bottom:16px;clear:both}.card-heading h3{font-size:22px}.play-label{display:block;font-size:10px;padding:5px 7px}.use-case{font-size:14px;margin-top:17px}.explain{font-size:13px}.demo-well{padding:18px 14px;margin-top:16px;min-height:180px}.try-label{font-size:12px}.sample-card{grid-template-columns:42px 1fr;gap:10px;padding:15px}.sample-card.chosen{padding:14px}.sample-card .demo-button{grid-column:1/-1}.sample-art{width:42px;height:54px}.modal-demo{padding:14px;flex-wrap:wrap}.modal-demo p{font-size:13px}.modal-demo .demo-button{flex:1}.demo-field input,.demo-field select{font-size:16px}.mini-nav{flex-wrap:wrap}.mini-menu{flex:1;justify-content:flex-end;min-width:max-content}.mini-menu button{white-space:nowrap}.paper-head{gap:8px}.paper-head label{font-size:11px}.prompt-paper{padding:12px}.prompt-paper textarea{font-size:14px}.prompt-foot{font-size:11px}.copy-button{min-height:40px;font-size:12px}.lesson-navigation{gap:8px;margin-top:15px}.lesson-navigation button{font-size:11px;padding:9px 11px;white-space:nowrap}.lesson-navigation p{font-size:10px}.combine-wrap{margin-top:24px}.combine-wrap>summary{padding:17px}.combine-wrap summary b{font-size:13px}.combine-wrap summary small{font-size:11px}.combine{grid-template-columns:1fr;padding:4px 17px 18px;gap:18px}.combine h2{font-size:23px}.combine-intro>p:not(.eyebrow){font-size:12px}.combine .eyebrow{margin-bottom:8px}footer{display:grid;gap:9px;font-size:10px;padding:23px 0}.combined-paper textarea{min-height:240px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.topbar,.hero,.category-nav,.item-picker,.lesson-navigation,.copy-button,footer{display:none}.ui-card{display:block;box-shadow:none}.lesson-notes{break-inside:avoid}}

.demo-feedback{font-size:13px;line-height:1.8;color:var(--green)}.category-nav button:focus-visible{outline:3px solid #7a6098;outline-offset:3px}