@font-face{font-family:MarinaSans;src:url('/assets/PretendardVariable.woff2') format('woff2');font-weight:100 900;font-style:normal;font-display:swap}
:root{--font:"MarinaSans","Apple SD Gothic Neo","Malgun Gothic",sans-serif;--ink:#253247;--muted:#657083;--navy:#233751;--green:#315d73;--mint:#e9eff3;--line:#dce1e6;--paper:#f7f8fa;font-family:var(--font);color:var(--ink);background:var(--paper);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}
body{font-family:var(--font);font-size:16px;line-height:1.7;letter-spacing:-.015em;word-break:keep-all;overflow-wrap:break-word}
button,input,select,textarea{font-family:var(--font);letter-spacing:inherit}
button,a,summary,input,select,textarea{touch-action:manipulation}
button{border-radius:7px;font-weight:600;min-height:40px;transition:background-color .16s,border-color .16s}
button:hover{border-color:#a0b1c0;background:#edf2f6}
button.primary,.login-card button,.admin-main button:not(.secondary):not(.danger):not(.record-row){background:var(--navy);border-color:var(--navy);color:#fff}
button.primary:hover,.login-card button:hover{background:#344e6f;border-color:#344e6f;color:#fff}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #86a6c0;outline-offset:3px}
h1,h2,h3{font-weight:650;letter-spacing:-.035em;text-wrap:balance}
p{color:inherit}
.notice,.restriction{background:#edf0f4;color:#596477;border-bottom:1px solid var(--line);padding:10px max(24px,calc((100vw - 1470px)/2));font-size:12px;line-height:1.6;text-align:left;display:flex;flex-wrap:wrap;gap:4px 20px}
.notice strong,.restriction strong{font-weight:650;color:#344b66}
.eyebrow,.mini-label{font-size:11px;line-height:1.5;font-weight:650;letter-spacing:.1em;color:#5b7189}
.login-layout{max-width:1110px;min-height:calc(100vh - 62px);grid-template-columns:1.1fr 1fr;gap:90px;padding:64px 40px}
.intro img{width:174px;margin-bottom:55px}
.intro h1{font-size:44px;line-height:1.24;letter-spacing:-.045em;margin:22px 0}
.intro p{font-size:16px;line-height:1.85;color:var(--muted);max-width:390px}
.tags{gap:0;margin-top:30px;border-top:1px solid var(--line);padding-top:20px}
.tags span{border:0;border-radius:0;padding:0 13px;font-size:12px;color:#596477;border-right:1px solid #cbd3dc}
.tags span:first-child{padding-left:0}.tags span:last-child{border:0}
.member-note{border-left:2px solid #8aa0b6;padding-left:15px;font-size:13px!important;color:#596477!important;margin-top:30px}
.member-note strong{display:block;color:#344b66;font-size:14px;font-weight:600;margin-bottom:3px}
.login-card{padding:38px 36px;border:1px solid #dce1e6;border-radius:12px;box-shadow:0 12px 35px #24385206}
.login-card h2{font-size:27px;margin:12px 0 14px}
.login-card>p{font-size:15px;line-height:1.7;color:var(--muted);margin-bottom:26px}
.login-card label{font-size:14px;font-weight:600;margin-top:20px}
.login-card input:not([type=checkbox]){font-size:16px;padding:13px 15px;border-radius:6px;background:#fff;border:1px solid #c3cdd8;min-height:51px}
.login-card input::placeholder{color:#9ca6b2;font-weight:400}
.login-card label.remember{font-size:13px;line-height:1.65;color:var(--muted);margin-top:16px}
.remember input{accent-color:var(--navy);flex-shrink:0}
.login-card button{font-size:15px;min-height:50px;margin-top:24px}
.help{font-size:13px;border-color:var(--line);color:var(--muted);padding-top:19px}
.admin-link{font-size:12px;color:var(--muted);text-underline-offset:4px}
.login-card #message:empty{min-height:0;margin:0}.login-card #message:not(:empty){font-size:13px;margin-bottom:0}
.topbar{height:80px;padding:0 30px;gap:26px}
.brand img{width:148px}
.course-name{font-size:13px;letter-spacing:.08em;font-weight:600;border-left:1px solid var(--line);padding-left:25px}
.course-name span{background:none;border:1px solid var(--line);border-radius:4px;color:#607086;font-size:11px;padding:5px 8px}
.top-actions{font-size:13px;gap:20px}.top-actions .text-btn{font-size:13px;min-height:40px}
.shell{max-width:1470px;grid-template-columns:235px minmax(0,1fr)}
.sidebar{padding:30px 20px;background:#f7f8fa}
.home-nav{font-size:14px;font-weight:550;margin-bottom:8px;padding:11px 12px}
.home-nav span{font-size:14px;color:#7c8b9e}
.sidebar h2{font-size:11px;letter-spacing:.08em;margin-top:28px}
.nav-lesson{padding:12px 11px;border-radius:6px;font-size:14px;gap:11px}
.nav-lesson small{font-size:11px;margin-top:3px;line-height:1.5}
.nav-lesson .number{font-size:11px;padding-top:3px}
.nav-lesson.active,.home-nav.active{background:#e7edf3;color:#274461}
.nav-lesson:hover,.home-nav:hover{background:#edf1f5}
.sidebar-note{font-size:13px;line-height:1.75}.sidebar-note p{margin-bottom:22px}
.grade-picker{padding:0 5px;margin-bottom:23px}
.grade-picker label{font-size:13px;font-weight:600;margin-bottom:9px}
.grade-picker select{padding:11px;border:1px solid #c5d0da;font-size:14px;background:#fff;border-radius:6px}
.grade-picker p{font-size:12px;line-height:1.65;margin-top:9px}
main{padding:34px 38px}
.hero{border-radius:10px;padding:38px 40px;gap:36px;background:var(--navy);grid-template-columns:1.1fr 1fr}
.hero .eyebrow{color:#c0d0df;font-size:11px;letter-spacing:.08em}
.hero h1{font-size:40px;line-height:1.32;font-weight:600;letter-spacing:-.04em;margin:20px 0}
.hero h1 em{color:#c6d8e8;font-weight:450}
.hero p{font-size:15px;line-height:1.8;color:#d2dbe5;margin-bottom:26px}
.hero .primary.light{background:#f2f5f8;color:#263f5c;border:0;font-size:14px;padding:12px 17px;font-weight:600}
.hero .primary.light:hover{background:#dce7ef}
.hero-method{border-color:#506178;padding-left:34px}
.hero-method>span{font-size:12px;color:#b9cadb}
.hero-method li{gap:18px;margin:22px 0}
.hero-method li>b{border:0;border-radius:0;width:25px;height:auto;color:#a9bfd5;font-size:12px;font-weight:500;justify-content:start}
.hero-method li div{font-size:16px;font-weight:500}.hero-method small{font-size:12px;color:#b9cadb;font-weight:400;margin-top:3px}
.course-focus{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:24px 0;margin:0}
.course-focus b{font-size:16px;color:#314960;font-weight:600}
.course-focus p{font-size:14px;margin:8px 0;color:#536275}
.course-focus small{font-size:12px;line-height:1.7;display:block}
.summary-strip{padding:25px 0;margin-bottom:36px}
.summary-strip b{font-size:23px;font-weight:550;letter-spacing:-.03em}
.summary-strip span{font-size:12px;margin-top:5px}
.section-head h2,.usage h2{font-size:23px;font-weight:600}
.section-head>span,.muted{font-size:13px;line-height:1.7}
.plan-grid{gap:14px}
.plan-grid>button,.plan-grid>.rest{border-radius:8px;padding:24px;background:#fff}
.plan-grid>button:hover{border-color:#9daebe;background:#fbfcfd}
.plan-grid h3{font-size:17px;font-weight:600;margin:15px 0 7px}
.plan-grid p{font-size:13px;line-height:1.7;margin-bottom:18px}
.plan-grid b{font-size:12px;font-weight:550;color:#4e6c85}
.plan-time{font-size:12px;font-weight:550;letter-spacing:.025em;color:#5c748e}
.plan-grid>.rest{background:#f0f2f5;border-style:solid}
.finish-strip{font-size:14px;line-height:1.75;padding:22px 0;margin:26px 0;gap:24px}
.finish-strip b{font-weight:600;white-space:nowrap}
.usage>div{gap:26px}.usage p{font-size:14px;line-height:1.8}.usage b{font-weight:600}
footer{font-size:12px;line-height:1.8;padding-top:24px;margin-top:36px}
footer p{margin:7px 0}footer p:first-child{font-weight:550;color:#536379}footer a{text-underline-offset:3px}
.unit-heading h1{font-size:30px;line-height:1.4;font-weight:600;margin:9px 0}
.unit-heading p{font-size:14px}.complete-btn{font-size:13px}
.complete-btn.done{background:#e8eef4;border-color:#bdcbd8;color:#345774}
.unit-columns{grid-template-columns:minmax(0,1fr) 350px;gap:26px}
.prompt{background:#edf1f5;border:1px solid #dce4ec;border-radius:8px;padding:25px 27px}
.prompt p{font-size:17px;line-height:1.85;letter-spacing:0;word-break:normal;overflow-wrap:break-word}
.format-note{font-size:13px;line-height:1.65;color:#5d6b7d;border-color:#d2dce5}
.model-panel{border-radius:8px;margin-top:24px}
.model-panel>summary{font-size:16px;font-weight:600;padding:19px 24px;gap:12px}
.model-panel small{font-size:12px}
.model-tools{padding:0 24px 9px;gap:8px}
.model-tools button{font-size:12px;padding:7px 11px;min-height:35px}
.model-tools label,.model-tools #voice-status{font-size:12px}.model-tools select{font-size:12px;border-color:#c5d0da;border-radius:5px;padding:7px}
.protected-example,.english-text{font-family:var(--font);font-size:17px;line-height:1.9;letter-spacing:0;font-weight:400;word-break:normal;overflow-wrap:anywhere}
.protected-example{padding:4px 27px 23px}
.meaning{background:#fafbfc;padding:19px 26px;font-size:14px;line-height:1.85}
.meaning summary{font-weight:600}.meaning p{color:#58687c}
.structure{margin-top:32px}.structure h2{font-size:21px}
.step{padding:22px 0;gap:12px}.step-number{font-size:12px;padding-top:3px;font-weight:550}
.step h3{font-size:15px;font-weight:600;margin-bottom:8px}
.step blockquote{font-family:var(--font);font-size:16px;line-height:1.8;color:#355570;font-weight:500;letter-spacing:0;word-break:normal;margin-bottom:8px}
.step p{font-size:14px;line-height:1.8}.transfer-note{font-size:14px;line-height:1.8;padding:26px 0}
.lesson-pager button{font-size:13px}
.practice{border-radius:8px;padding:25px;top:20px;box-shadow:0 5px 20px #263b4c03}
.practice-head h2{font-size:22px;font-weight:600;margin:8px 0}
.practice-head p{font-size:13px;line-height:1.7;margin-bottom:21px}
.timer-box{padding:18px 0 20px}#timer-phase{font-size:12px}
#timer{font-family:var(--font);font-size:48px;font-weight:350;letter-spacing:-.025em;margin:10px 0 17px}
.timer-buttons{gap:6px}.timer-buttons button{font-size:12px;padding:7px 10px;min-height:35px}
.practice label{font-size:14px;font-weight:550;margin-top:20px}
textarea{font-family:var(--font);font-size:16px;line-height:1.85;background:#fff;border:1px solid #c4cfd9;border-radius:6px;padding:13px;letter-spacing:0;word-break:normal;min-height:105px}
textarea::placeholder{font-family:var(--font);font-size:13px;line-height:1.7;color:#8591a0}
#draft{min-height:255px}
.word-meter{align-items:baseline}.word-meter strong{font-size:13px;font-weight:600}.word-meter span{font-size:12px}
.self-check h3{font-size:15px;font-weight:600}.self-check label{font-size:13px;font-weight:400;line-height:1.75;gap:10px}
.self-check input,.submit-panel input{flex-shrink:0;width:16px;height:16px;accent-color:var(--navy)}
#check-feedback,.privacy-note,.storage-note{font-size:12px;line-height:1.8}
.submit-panel>p{font-size:13px;line-height:1.8}.submit-panel label{font-size:12px;font-weight:400;line-height:1.8;gap:9px}
.submit-panel .primary{font-size:14px;padding:12px 10px;min-height:48px;font-weight:600}
.submit-panel .text-btn{font-size:12px;min-height:36px}
.feedback-badge{background:#e9eff4;border-radius:5px;font-size:13px}
.feedback-intro,.rewrite-box{background:#edf2f6;border-radius:8px;padding:26px}
.feedback-intro p{font-size:15px;line-height:1.9}
.feedback-card{border-radius:8px;padding:27px;margin:13px 0}
.feedback-card h2{font-size:20px;font-weight:600}.feedback-card li{font-size:15px;line-height:1.8}
.correction{padding:21px 0}.correction span{font-size:12px;font-weight:600}.correction p{font-size:16px;line-height:1.85;word-break:normal}.correction .reason{font-size:14px;line-height:1.8}
.correction del{background:#f8e9e4;color:#934c3c}.correction ins{background:#e3eee7;color:#345f46}
.feedback-checks>div{border-radius:8px;padding:22px}.feedback-checks h3{font-size:16px}.feedback-checks p{font-size:14px;line-height:1.8}
.rewrite-box h2{font-size:21px}.rewrite-box p{font-size:15px;line-height:1.8}.rewrite-box button{font-size:14px}
.history-row{border-radius:7px;padding:21px 24px;gap:14px}.history-row b{font-size:16px;font-weight:600}.history-row span{font-size:13px}.history-row i{font-size:13px}
#history-detail h3{font-size:17px}.history-row:focus-visible{outline-offset:3px}
.record-state{font-size:13px}.text-btn{font-size:12px}
.single h1,.admin-header h1{font-weight:600}.admin-panel{border-radius:9px;border-color:var(--line)}.admin-panel p,.admin-guide li{font-size:14px}.register-grid label{font-size:13px}.record-detail .writing{font-family:var(--font);font-size:16px;background:#f6f8fa}.record-detail li{font-size:14px}
@media(max-width:1250px){.shell{grid-template-columns:215px minmax(0,1fr)}main{padding:30px}.hero{padding:32px;gap:28px}.hero h1{font-size:35px}.hero-method{padding-left:27px}.unit-columns{grid-template-columns:minmax(0,1fr) 330px;gap:20px}.practice{padding:22px}}
@media(max-width:1150px){.unit-columns{grid-template-columns:1fr}.practice{position:static;max-width:none}.hero{grid-template-columns:1fr 1fr}.plan-grid{grid-template-columns:repeat(2,1fr)}.login-layout{gap:50px}.intro h1{font-size:39px}}
@media(max-width:900px){.shell{grid-template-columns:195px minmax(0,1fr)}main{padding:24px}.sidebar{padding:24px 13px}.hero{grid-template-columns:1fr;padding:29px}.hero-method{border-left:0;border-top:1px solid #506178;padding:23px 0 0}.hero-method ol{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:16px 0 0}.hero-method li{margin:0;gap:10px}.hero-method li div{font-size:14px}.hero-method small{font-size:12px}.course-name span{display:none}.login-layout{gap:35px;padding:50px 30px}.login-card{padding:31px 27px}.intro h1{font-size:36px}.intro p{font-size:15px}.tags span{font-size:11px;padding:0 8px}}
@media(max-width:750px){
 .notice,.restriction{font-size:11px;padding:9px 17px;display:block}.notice strong,.restriction strong{display:block;font-size:12px;margin-bottom:2px}
 .login-layout{display:block;min-height:0;padding:30px 22px 40px;max-width:520px}.intro{margin-bottom:28px}.intro img{width:146px;margin-bottom:31px}.intro h1{font-size:36px;margin:15px 0 18px}.intro p{font-size:15px;line-height:1.8}.tags{margin-top:24px;padding-top:17px}.tags span{font-size:12px;padding:0 10px}.member-note{font-size:12px!important;margin-top:23px}.member-note strong{font-size:13px}.login-card{padding:29px 26px}.login-card h2{font-size:25px}.login-card>p{font-size:14px;margin-bottom:22px}.login-card label.remember{font-size:12px}.help{font-size:12px}
 .topbar{height:70px;padding:0 17px;gap:13px}.brand img{width:132px}.course-name{display:none}.top-actions{font-size:12px;gap:13px}.top-actions .text-btn{font-size:12px}.shell{display:block}.sidebar{position:static;border-right:0;border-bottom:1px solid var(--line);padding:17px 17px 13px;max-height:none}.sidebar .home-nav{display:inline-block;width:auto;font-size:13px;padding:8px 12px;margin:0 5px 11px 0;min-height:38px}.home-nav span{margin-left:10px}.sidebar h2,.sidebar-note{display:none}.grade-picker{display:grid;grid-template-columns:1fr 1.1fr;gap:6px 12px;margin:0 0 13px;padding:0}.grade-picker label{font-size:13px;margin:0}.grade-picker select{font-size:14px;padding:9px}.grade-picker p{font-size:12px;margin:0;grid-column:1/-1}
 #lesson-nav{gap:7px;padding:1px 1px 6px;scrollbar-width:thin}.nav-lesson{min-width:168px;width:168px;font-size:13px;line-height:1.5;border:1px solid #d9e1e9;padding:9px 11px;flex-shrink:0}.nav-lesson small{font-size:11px;margin-top:3px}.nav-lesson .number{display:none}
 main{padding:25px 17px}.hero{padding:28px 25px;gap:27px}.hero h1{font-size:34px;line-height:1.35;letter-spacing:-.04em;margin:18px 0}.hero p{font-size:14px;margin-bottom:23px}.hero .eyebrow{font-size:10px;letter-spacing:.07em}.hero-method{margin:0;padding-top:23px}.hero-method li>b{font-size:11px;min-width:20px;width:20px}.hero-method li div{font-size:13px}.hero-method small{font-size:11px}.hero-method ol{gap:20px 15px}.hero .primary.light{font-size:13px;min-height:43px}
 .course-focus{padding:23px 0}.course-focus b{font-size:15px}.course-focus p{font-size:13px}.course-focus small{font-size:12px}.summary-strip{padding:24px 0;margin-bottom:30px}.summary-strip b{font-size:20px}.summary-strip span{font-size:11px;line-height:1.6;padding:0 4px}.section-head h2,.usage h2{font-size:22px}.section-head>span{font-size:12px}.section-head{gap:7px}.plan-grid{gap:11px}.plan-grid>button,.plan-grid>.rest{padding:19px 16px}.plan-grid h3{font-size:16px;line-height:1.45;margin:13px 0 9px}.plan-grid p{font-size:12px;line-height:1.75}.plan-grid b,.plan-time{font-size:11px}.finish-strip{display:block;font-size:13px;padding:20px 0}.finish-strip b{display:block;margin-bottom:7px;white-space:normal}.usage>div{grid-template-columns:1fr 1fr;gap:8px 23px}.usage p{font-size:13px}.usage b{font-size:14px}
 .unit-heading{display:block;margin-bottom:22px}.unit-heading h1{font-size:27px}.unit-heading p{font-size:13px}.complete-btn{font-size:12px;margin-top:14px;min-height:38px}.unit-columns{grid-template-columns:1fr;gap:25px}.prompt{padding:22px}.prompt p{font-size:17px;line-height:1.85}.format-note{font-size:12px}.model-panel>summary{padding:18px 22px;font-size:16px;flex-wrap:wrap;gap:8px}.model-tools{padding:0 21px 8px;gap:8px}.model-tools #voice-status{width:100%;margin:0;font-size:12px}.protected-example{padding:5px 23px 19px;font-size:17px;line-height:1.9}.meaning{padding:18px 22px;font-size:14px}.structure h2{font-size:20px}.step{grid-template-columns:23px 1fr;gap:8px}.step h3{font-size:15px}.step blockquote{font-size:16px}.step p{font-size:14px}.transfer-note{font-size:14px}.lesson-pager button{font-size:12px;min-height:40px}.practice{padding:24px 22px;position:static}.practice-head h2{font-size:22px}.practice-head p{font-size:13px}#draft{min-height:260px}.word-meter{flex-wrap:wrap}.self-check label{font-size:13px}.submit-panel .primary{font-size:14px}.feedback-card{padding:23px}.feedback-columns,.feedback-checks{grid-template-columns:1fr}.feedback-intro,.rewrite-box{padding:23px}.feedback-badge{display:inline-block;margin-top:10px}.feedback-card h2{font-size:20px}.english-text{font-size:17px}.history-row{padding:19px;gap:9px 13px}.history-row span{font-size:12px}.history-row i{font-size:12px}.muted{font-size:12px}footer{font-size:11px;line-height:1.85;margin-top:32px}.privacy-note,.storage-note{font-size:12px}
}
@media(max-width:370px){.login-layout{padding-right:17px;padding-left:17px}.login-card{padding:25px 21px}.intro h1{font-size:33px}.hero{padding:25px 21px}.hero h1{font-size:31px}.plan-grid{grid-template-columns:1fr}.summary-strip b{font-size:18px}.top-actions{gap:9px;font-size:11px}.brand img{width:120px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}