:root{--ink:#282331;--muted:#706977;--paper:#f7f5f0;--panel:#fff;--line:#e4dedb;--primary:#493053;--soft:#eee7f1;--accent:#9d763d;--red:#a52e40;--green:#286748;--shadow:0 16px 45px #34233d0a;font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}a{color:var(--primary);text-underline-offset:4px}button{cursor:pointer;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);min-height:44px;padding:10px 17px;font-weight:650}button:hover{border-color:var(--primary);background:var(--soft)}button:disabled{opacity:.55;cursor:wait}button.primary,.primary{background:var(--primary);color:#fff;border-color:var(--primary)}button.primary:hover{background:#61416d}.danger{color:var(--red)}.subtle{background:transparent}.small{font-size:13px;min-height:36px;padding:7px 12px}.top{min-height:74px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px max(24px,calc((100vw - 1120px)/2));background:#fff}.brand{text-decoration:none;font-size:17px;font-weight:800;letter-spacing:2px;color:var(--primary)}.brand span{font-size:11px;letter-spacing:1px;display:block;margin-top:3px;color:var(--muted)}#account{display:flex;align-items:center;gap:12px;font-size:14px}.shell{max-width:1000px;padding:36px 24px 100px;margin:auto}.shell.wide{max-width:1240px}h1{font-size:clamp(27px,4vw,42px);line-height:1.25;letter-spacing:-1.4px;margin:12px 0 18px;word-break:keep-all}h2{font-size:24px;line-height:1.4;margin:0 0 16px;word-break:keep-all}h3{font-size:18px;margin:0 0 12px;line-height:1.5}p{line-height:1.8;word-break:keep-all;margin:8px 0 16px}.muted{color:var(--muted)}.eyebrow{font-size:12px;color:var(--accent);font-weight:750;letter-spacing:1.5px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow);margin-bottom:20px}.hero{padding:14px 0 26px}.hero p{max-width:640px;color:var(--muted)}.login-layout{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start;padding-top:35px}.login-story{padding-top:12px}.login-story h1{font-size:clamp(35px,5vw,49px)}.steps{list-style:none;counter-reset:steps;padding:16px 0}.steps li{counter-increment:steps;margin:16px 0;color:var(--muted);display:flex;align-items:center;gap:13px}.steps li:before{content:counter(steps);display:grid;place-items:center;width:29px;height:29px;border:1px solid var(--line);border-radius:50%;color:var(--accent);font-size:12px}.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:24px;flex-wrap:wrap}.tabs button{background:transparent;border-color:transparent}.tabs button.active{background:var(--soft);color:var(--primary)}.tabs.sticky{position:sticky;top:0;background:var(--paper);z-index:4;padding-top:10px}.field{display:block;margin:0 0 20px}.field>span,.field>legend{display:block;font-size:14px;font-weight:650;margin-bottom:9px;line-height:1.5}.field input:not([type=checkbox]):not([type=radio]),.field select,.field textarea{display:block;width:100%;border:1px solid #cdc5cf;border-radius:9px;background:#fff;padding:12px 13px;min-height:47px;color:var(--ink)}input:focus,select:focus,textarea:focus{outline:3px solid #c4afd6;border-color:var(--primary)}textarea{resize:vertical;min-height:106px;line-height:1.7}fieldset{border:0;padding:0;min-width:0}.choices{display:flex;flex-wrap:wrap;gap:8px}.choice{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:10px;min-height:45px;padding:10px 12px;font-size:14px;cursor:pointer}.choice:has(input:checked){background:var(--soft);border-color:var(--primary)}input[type=checkbox],input[type=radio]{accent-color:var(--primary);width:18px;height:18px;flex:none}.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.7;margin:18px 0}.check input{margin-top:4px}.full{width:100%}.error{background:#fff0f0;color:#92243c;padding:12px 16px;border-radius:10px;line-height:1.6;margin:12px 0}.notice{background:#f4f0e7;border:1px solid #e6d9bf;color:#6e5732;padding:15px 18px;border-radius:12px;font-size:14px;line-height:1.8;margin:18px 0}.success{background:#eaf4ed;color:var(--green);padding:12px 16px;border-radius:10px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.course{display:flex;flex-direction:column;align-items:flex-start;gap:12px}.course p{margin:0}.badge{display:inline-block;border-radius:30px;padding:5px 10px;font-size:12px;font-weight:650;background:var(--soft);color:var(--primary)}.badge.pending{background:#fff0ce;color:#8d621a}.badge.approved{background:#e4f1e8;color:var(--green)}.badge.suspended,.badge.rejected{background:#ffe8e9;color:var(--red)}.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.space{justify-content:space-between}.spacer{margin-top:24px}.lesson-title{font-size:32px}.progress{height:5px;background:var(--line);border-radius:3px;margin-top:16px;overflow:hidden}.progress>i{display:block;background:var(--accent);height:100%}.activity-row{display:flex;gap:16px;align-items:center;justify-content:space-between}.activity-row h3{margin:0}.activity-row p{font-size:14px;margin:4px 0 0;color:var(--muted)}.number{width:40px;height:40px;border-radius:50%;background:var(--soft);display:grid;place-items:center;color:var(--primary);font-weight:750;flex:none}.group{padding-top:24px;margin-top:24px;border-top:1px solid var(--line)}.group:first-child{padding-top:0;margin-top:0;border-top:0}.group-title{font-size:20px;margin-bottom:22px}.savebar{position:sticky;bottom:0;border-top:1px solid var(--line);background:#fffc;padding:14px 0;backdrop-filter:blur(10px);display:flex;gap:10px;flex-wrap:wrap;align-items:center;z-index:3}.save-status{font-size:12px;color:var(--muted);flex:1;min-width:130px}.reading-card{display:block;max-width:170px;max-height:300px;object-fit:contain;margin:4px auto 26px}.reading-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.reading-grid figure{margin:0;text-align:center}.reading-grid img{max-width:100%;max-height:280px;object-fit:contain;border-radius:6px}.reading-grid figcaption{font-size:12px;color:var(--muted);padding:6px}.lecture details{border-bottom:1px solid var(--line);padding:14px 0}.lecture summary{cursor:pointer;font-size:16px;font-weight:700;padding:8px 2px;line-height:1.6}.lecture summary .page{color:var(--accent);font-size:12px;margin-right:12px}.lecture .blocks{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:9px;margin:20px 0}.lecture .block{white-space:pre-line;font-size:15px;line-height:1.85;background:#faf8f4;border-radius:9px;padding:13px 15px;overflow-wrap:anywhere}.lecture .block:first-child{color:var(--primary);font-weight:700}.shared-card{border-top:1px solid var(--line);padding-top:20px;margin-top:20px}.answer{margin:14px 0}.answer dt{font-size:12px;color:var(--muted);margin:0 0 6px}.answer dd{margin:0;white-space:pre-wrap;line-height:1.7;overflow-wrap:anywhere}.tablewrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;vertical-align:top;padding:13px 10px;border-bottom:1px solid var(--line);line-height:1.65}th{font-size:12px;color:var(--muted);white-space:nowrap}.nowrap{white-space:nowrap}td .actions{min-width:190px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.stat strong{display:block;font-size:28px;margin-bottom:5px}.stat span{font-size:13px;color:var(--muted)}.admin-filter{display:flex;gap:14px;flex-wrap:wrap;align-items:center}.admin-filter .field{margin:0;flex:1;min-width:170px}.backlink{font-size:13px}.loading{padding:40px;color:var(--muted)}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);border-radius:12px;background:var(--primary);color:white;padding:14px 22px;max-width:90vw;box-shadow:var(--shadow);z-index:20;display:none;line-height:1.5}.link-button{background:none;border:0;padding:8px 0;text-decoration:underline;color:var(--primary);font-size:14px}.hint{font-size:12px;line-height:1.8;color:var(--muted)}.hidden{display:none!important}.review-result{padding:10px 14px;margin:8px 0;border-radius:10px;background:#f1f0f4}.search{width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;font:inherit}.editor-section{border:1px solid var(--line);border-radius:12px;padding:16px;margin:14px 0}.editor-section summary{cursor:pointer;font-weight:700}.editor-section .field{margin-top:16px}.empty{padding:24px;text-align:center;color:var(--muted)}@media(max-width:700px){.top{padding:14px 18px;min-height:65px}.brand{font-size:14px;letter-spacing:1.4px}.shell{padding:24px 16px 65px}.login-layout{grid-template-columns:1fr;gap:18px;padding-top:0}.login-story h1{font-size:34px}.login-story .steps{display:none}.panel{padding:20px;border-radius:14px}.grid{grid-template-columns:1fr}.hero{padding-bottom:10px}.tabs{gap:2px}.tabs button{padding:10px 12px;font-size:14px}.lesson-title{font-size:27px}.activity-row{align-items:flex-start}.activity-row .number{display:none}.activity-row button{flex:none}.stats{gap:8px}.stat{padding:13px}.stat strong{font-size:25px}.reading-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.reading-grid img{max-height:230px}.savebar .primary{flex:1}.savebar .save-status{width:100%;flex-basis:100%}.lecture .blocks{grid-template-columns:1fr}.choice{flex:1 0 calc(50% - 8px);font-size:13px}.backlink{font-size:12px}#account{gap:7px;font-size:12px}h2{font-size:22px}.check{font-size:13px}.group-title{font-size:18px}.actions button{font-size:13px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
h3{word-break:keep-all}progress.progress{appearance:none;border:0;display:block}progress.progress::-webkit-progress-bar{background:var(--line);border-radius:3px}progress.progress::-webkit-progress-value{background:var(--accent);border-radius:3px}
.source-text{white-space:pre-line;padding:16px;background:#faf8f4;font-size:14px}
/* One-screen practice, with the form kept mounted while pages change. */
[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
body.practice-focus{overflow:hidden}body.practice-focus>.top{display:none}.practice-focus .shell{height:100vh;height:100dvh;max-width:880px;padding:20px 24px;padding-top:max(16px,env(safe-area-inset-top));padding-bottom:max(12px,env(safe-area-inset-bottom))}.practice-focus #lesson-body{height:100%;min-height:0}.practice-shell{height:100%;min-height:0;display:flex;flex-direction:column;gap:12px}.practice-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;flex:none}.practice-heading>.hint{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.practice-heading>button{flex:none}.practice-title{margin:0;font-size:23px;line-height:1.4}.practice-guide{font-size:14px;line-height:1.65;color:var(--ink);position:relative;flex:none;background:#f4eef8;border:1px solid #cbb7d8;border-left:4px solid var(--primary);border-radius:10px;overflow:hidden}.practice-guide summary{cursor:pointer;padding:10px 12px;font-size:16px;font-weight:800;color:var(--primary);background:#f4eef8;position:sticky;top:0;z-index:1;min-height:44px}.practice-guide summary::after{content:"펼치기";float:right;font-size:12px;font-weight:600;line-height:26px;margin-left:10px}.practice-guide[open] summary::after{content:"접기"}.practice-guide[open]{max-height:30vh;max-height:30dvh;overflow:auto}.practice-guide p{margin:0 12px 12px;white-space:pre-line}.practice-shell #exercise-error:empty{display:none}.practice-shell .error{margin:0;padding:9px 12px;font-size:13px}.paged-form{display:flex;flex:1;min-height:0;flex-direction:column;gap:10px}.practice-stage{flex:1;min-height:0;position:relative;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);overflow:hidden;touch-action:pan-y}.practice-page.group,.practice-page{height:100%;margin:0;padding:24px;border:0;overflow-y:auto;overscroll-behavior:contain;animation:page-forward .18s ease-out}.practice-page[data-direction=back]{animation-name:page-back}.practice-page .group-title{font-size:22px;line-height:1.5;margin:10px 0 20px;outline:none}.practice-page .field:last-child{margin-bottom:0}.practice-page textarea{height:clamp(100px,20vh,190px);resize:vertical}.practice-page .page-content.with-card{display:grid;grid-template-columns:110px minmax(0,1fr);gap:20px;align-items:start}.practice-page .reading-card{width:100%;max-height:210px;margin:0 auto;object-fit:contain}.practice-page .profile-preview{float:right;width:110px;margin:0 0 16px 20px}.practice-page:has(.profile-preview:not([hidden])) .page-fields{padding-right:132px}.page-navigation{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center;flex:none}.page-navigation button{white-space:nowrap}.page-navigation button:disabled{cursor:default}.page-picker{min-width:0;display:block}.page-picker select{width:100%;max-width:100%;border:1px solid var(--line);border-radius:10px;background:transparent;color:var(--muted);font-size:13px;min-height:44px;padding:8px;text-overflow:ellipsis}.practice-save{display:flex;align-items:center;gap:10px;flex:none;min-height:36px}.practice-save .save-status{min-width:0}.practice-save button{flex:none}.activity-shell .tabs{margin:0;padding:0 0 8px;flex-wrap:nowrap}.activity-slide{display:flex;flex:1;min-height:0;flex-direction:column;align-items:flex-start;justify-content:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;overflow:auto;touch-action:pan-y}.activity-slide h1{font-size:30px;margin:0;line-height:1.4}.activity-slide p{margin:0}.activity-slide>.primary{margin-top:8px}.activity-slide .hint{font-size:12px}.practice-focus #toast{bottom:90px}.submit-page>p{margin:10px 0}.submit-page .check{margin:18px 0}.submit-page #quiz-result:empty{display:none}
@keyframes page-forward{from{opacity:.65;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}@keyframes page-back{from{opacity:.65;transform:translateX(-20px)}to{opacity:1;transform:translateX(0)}}
@media(max-width:700px){.practice-focus .shell{padding:12px;padding-top:max(12px,env(safe-area-inset-top));padding-bottom:max(10px,env(safe-area-inset-bottom))}.practice-shell{gap:8px}.practice-title{font-size:18px}.practice-page.group,.practice-page{padding:18px}.practice-page .group-title{font-size:19px;margin:8px 0 16px}.practice-page .field{margin-bottom:16px}.practice-page .field>span,.practice-page .field>legend{font-size:14px;margin-bottom:7px}.practice-page input,.practice-page textarea,.practice-page select{font-size:16px}.practice-page textarea{height:120px;min-height:90px}.practice-page .page-content.with-card{grid-template-columns:78px minmax(0,1fr);gap:14px}.practice-page .reading-card{max-height:154px}.practice-page .profile-preview{width:80px;margin-left:14px}.practice-page:has(.profile-preview:not([hidden])) .page-fields{padding-right:94px}.page-navigation{gap:7px}.page-navigation button{padding:10px 12px;font-size:14px}.page-picker select{font-size:12px;padding:6px;min-height:44px}.activity-slide{padding:22px;gap:14px}.activity-slide h1{font-size:25px}.activity-slide p{font-size:14px}.activity-shell .tabs button{flex:1;padding:10px 6px}.practice-page .choices{gap:7px}.practice-page .choice{font-size:13px;padding:9px 10px}.practice-page .page-content.with-card .choice{flex-basis:100%}}
@media(max-height:680px){.practice-shell{gap:6px}.practice-title{font-size:17px}.practice-page.group,.practice-page{padding:14px}.practice-page .group-title{font-size:18px;margin:4px 0 12px}.practice-page textarea{height:92px;min-height:80px}.practice-page .field{margin-bottom:12px}.practice-page .reading-card{max-height:130px}.activity-slide{gap:9px;padding:18px}.activity-slide h1{font-size:22px}.activity-slide .number{display:none}.practice-save{min-height:32px}}
@media(prefers-reduced-motion:reduce){.practice-page{animation:none!important}}
/* Compact card references open in an accessible, focus-trapped dialog. */
.image-thumb{display:inline-flex;flex-direction:column;align-items:center;gap:4px;width:60px;min-height:44px;padding:4px;border-radius:7px;background:#faf8f4;vertical-align:top;cursor:zoom-in}.image-thumb:focus-visible{outline:3px solid #b79bc9;outline-offset:3px}.image-thumb>span{font-size:10px;font-weight:650;line-height:1.4;white-space:nowrap}.image-thumb .reading-card,.practice-page .image-thumb .reading-card,.reading-grid .image-thumb img{display:block;width:100%;height:82px;max-width:100%;max-height:82px;margin:0;object-fit:contain;border-radius:2px}.reading-grid .image-thumb{width:74px}.reading-grid .image-thumb img{height:104px;max-height:104px}.practice-page .page-content.with-card{grid-template-columns:60px minmax(0,1fr);gap:14px}.practice-page .profile-preview{width:60px;margin-left:14px}.practice-page:has(.profile-preview:not([hidden])) .page-fields{padding-right:74px}body.image-viewing{overflow:hidden}.image-viewer{border:0;padding:0;inset:0;width:100vw;max-width:none;height:100vh;height:100dvh;max-height:none;margin:0;background:transparent;color:#fff}.image-viewer::backdrop{background:rgba(20,15,24,.94)}.image-viewer-panel{height:100%;max-width:940px;margin:auto;display:flex;flex-direction:column;gap:12px;padding:20px;padding-top:max(16px,env(safe-area-inset-top));padding-bottom:max(12px,env(safe-area-inset-bottom));pointer-events:none}.image-viewer-header{display:flex;justify-content:space-between;align-items:center;gap:16px;flex:none;pointer-events:auto}.image-viewer-header h2{margin:0;font-size:18px;color:#fff;line-height:1.5}.image-viewer-header button{flex:none;min-height:44px;background:#fff;color:var(--ink)}.image-viewer-stage{display:flex;align-items:center;justify-content:center;flex:1;min-height:0;pointer-events:auto}.image-viewer-stage img{display:block;width:100%;height:100%;min-height:0;object-fit:contain;cursor:default}.image-viewer-hint{text-align:center;font-size:12px;line-height:1.5;color:#ddd2e3;margin:0;flex:none}.image-viewer-stage img{pointer-events:auto}
@media(max-width:700px){.image-thumb{width:52px}.image-thumb .reading-card,.practice-page .image-thumb .reading-card{height:70px;max-height:70px}.practice-page .page-content.with-card{grid-template-columns:52px minmax(0,1fr);gap:12px}.practice-page .profile-preview{width:52px;margin-left:12px}.practice-page:has(.profile-preview:not([hidden])) .page-fields{padding-right:64px}.image-viewer-panel{padding-left:12px;padding-right:12px;gap:10px}.image-viewer-header h2{font-size:16px}}

/* Account settings live beside logout; profile details are kept off the class list. */
.top>.brand{flex:none}#account{min-width:0;justify-content:flex-end}#account button{flex:none}.account-name{max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.settings-page{max-width:680px;margin:0 auto}.settings-page .hero{padding-top:24px}.profile-details{margin:20px 0 0}.profile-details>div{display:grid;grid-template-columns:80px minmax(0,1fr);gap:16px;padding:14px 0;border-top:1px solid var(--line)}.profile-details dt{color:var(--muted)}.profile-details dd{margin:0;font-weight:650;overflow-wrap:anywhere}.settings-page .panel>p{margin:12px 0 20px}
@media(max-width:700px){.account-name{display:none}.profile-details>div{grid-template-columns:65px minmax(0,1fr);gap:12px}}