:root{font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR",sans-serif;color:#1d2b3c;background:#f7f9fc;font-size:14px;font-synthesis:none;--bg:#f7f9fc;--surface:#fff;--soft:#f1f5f9;--ink:#1d2b3c;--muted:#778599;--line:#e7ebf0;--teal:#149a8d;--teal-dark:#0e7b76;--mint:#e5f6f3;--indigo:#6366e9;--violet:#f0efff;--rose:#df6771;--redbg:#fff0f1;--shadow:0 10px 34px rgba(24,46,74,.045);--sidebar:#fff;--font-bold:750}
:root[data-theme="dark"]{--bg:#111b28;--surface:#192739;--soft:#243447;--ink:#e9f0f7;--muted:#a7b6c8;--line:#314155;--teal:#4fc4b0;--teal-dark:#36ae9c;--mint:#203f40;--indigo:#9ca7ff;--violet:#282f53;--rose:#fc959b;--redbg:#452937;--shadow:0 10px 34px rgba(0,0,0,.16);--sidebar:#172436}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:var(--bg);color:var(--ink)}button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(38,173,164,.38);outline-offset:2px}a{color:inherit}strong,b{font-weight:750}.app-shell{display:flex;min-height:100vh}.sidebar{width:244px;flex:0 0 244px;background:var(--sidebar);border-right:1px solid var(--line);padding:29px 20px 22px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:11px;margin:0 3px 47px}.brand-mark{height:43px;width:43px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(145deg,#29baa9,#148b8a);color:white;font-weight:900;font-size:20px;box-shadow:0 6px 16px #119b8d35}.brand-mark span{color:#d7fdf8}.brand strong{font-size:19px;letter-spacing:-.8px;display:block}.brand span{font-size:10px;letter-spacing:.3px;color:var(--muted);display:block;margin-top:2px}.sidebar-label{font-size:10px;color:#a1afbe;font-weight:800;letter-spacing:1.6px;margin:0 14px 14px}.nav{display:grid;gap:7px}.nav-item{width:100%;border:0;background:transparent;color:var(--muted);padding:13px 14px;border-radius:12px;text-align:left;font-weight:700;display:flex;align-items:center;gap:13px;transition:.16s}.nav-item:hover{color:var(--ink);background:var(--soft)}.nav-item.active{background:var(--mint);color:var(--teal-dark)}.nav-item svg{width:19px;height:19px;stroke-width:1.8}.nav-item .number{margin-left:auto;font-size:11px;border-radius:7px;background:var(--soft);padding:3px 7px}.sidebar-bottom{margin-top:auto}.side-note{background:linear-gradient(160deg,#e9f7f4,#f2f5ff);padding:18px;border-radius:17px;color:#254456}.side-note .note-symbol{font-size:26px;color:#18a599;margin-bottom:9px}.side-note b{font-size:13px}.side-note p{line-height:1.6;font-size:12px;color:#667987;margin:7px 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var(--line);background:var(--surface);color:var(--muted);width:34px;height:34px;border-radius:11px;display:grid;place-items:center}.small-icon-btn svg{height:17px;width:17px}.user-bubble{border:0;border-radius:50%;background:#e4e4ff;color:#6664ca;width:36px;height:36px;font-weight:800}.main{padding:38px 42px 80px;width:min(1300px,100%);margin:0 auto;flex:1}.footer{font-size:11px;color:var(--muted);text-align:center;padding:21px 12px 28px;border-top:1px solid var(--line)}.eyebrow{text-transform:uppercase;color:var(--teal);font-size:11px;font-weight:850;letter-spacing:1.65px}.page-intro{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:29px}.page-intro h1{font-weight:850;font-size:30px;letter-spacing:-1.5px;margin:10px 0 7px}.subcopy{color:var(--muted);line-height:1.75;margin:0;font-size:13px}.text-muted{color:var(--muted)}.strong{font-weight:800}.card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:19px}.card-pad{padding:24px}.hero{background:linear-gradient(113deg,#1dada4,#208a99 58%,#477cc6);border-radius:22px;min-height:247px;display:flex;justify-content:space-between;align-items:center;padding:39px 46px;color:white;overflow:hidden;position:relative;margin-bottom:24px}.hero:before,.hero:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.17);border-radius:50%;height:320px;width:320px;right:-100px;top:-160px}.hero:after{height:480px;width:480px;top:10px;right:-190px}.hero-main{position:relative;z-index:2;max-width:650px}.hero .eyebrow{color:#baf9ed}.hero h2{margin:12px 0 10px;font-weight:840;font-size:32px;line-height:1.38;letter-spacing:-1.5px}.hero p{opacity:.87;font-size:13px;line-height:1.7;margin:0 0 24px}.hero-circle{position:relative;z-index:2;width:132px;height:132px;border:0;background:conic-gradient(#dcfffb var(--progress,0%),rgba(255,255,255,.26) 0);border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;transform:rotate(-8deg);flex:0 0 auto;margin-right:23px}.hero-circle strong,.hero-circle span{transform:rotate(8deg)}.hero-circle strong{font-size:28px;letter-spacing:-1px}.hero-circle span{font-size:10px;opacity:.88}.btn{border:0;display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:11px;min-height:42px;padding:11px 18px;font-weight:750;font-size:13px;transition:filter .15s,transform .12s}.btn:hover{filter:brightness(.96);transform:translateY(-1px)}.btn svg{width:17px;height:17px}.btn-primary{background:var(--teal);color:white}.btn-light{background:#fff;color:#117a80}.btn-outline{background:var(--surface);color:var(--ink);border:1px solid var(--line)}.btn-soft{background:var(--mint);color:var(--teal-dark)}.btn-danger{background:var(--redbg);color:var(--rose)}.btn-muted{background:var(--soft);color:var(--muted)}.btn:disabled{cursor:not-allowed;opacity:.5;transform:none}.btn-large{min-height:49px;padding:13px 22px;font-size:14px}.btn-block{width:100%}.btn-compact{min-height:34px;padding:8px 12px;font-size:12px}.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px;margin:23px 0}.stat-card{padding:22px 24px}.stat-icon{height:39px;width:39px;background:var(--soft);border-radius:12px;color:var(--teal);display:grid;place-items:center}.stat-icon svg{height:20px;width:20px}.stat-card p{color:var(--muted);font-size:12px;margin:16px 0 5px}.stat-card .stat-value{font-size:25px;font-weight:850;letter-spacing:-.5px}.stat-card .stat-foot{color:var(--muted);font-size:11px;margin-top:8px}.section-grid{display:grid;grid-template-columns:minmax(0,1.45fr) 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var(--line);background:var(--surface);padding:17px;border-radius:15px;text-align:left;min-height:126px;display:flex;flex-direction:column;gap:8px;color:var(--ink);transition:.15s}.day-tile:hover{border-color:var(--teal);transform:translateY(-2px);box-shadow:var(--shadow)}.day-tile.current{border:2px solid var(--teal);background:var(--mint)}.day-tile.finished{background:var(--surface)}.day-tile strong{font-size:18px}.day-tile small{color:var(--muted);font-size:11px}.day-tile .day-state{margin-top:auto;font-size:10px;font-weight:800;color:var(--teal)}.day-tile .day-state.unseen{color:var(--muted)}.study-layout{max-width:850px;margin:0 auto}.study-head{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:22px}.study-card{padding:34px 43px;border-radius:23px}.session-summary{padding:23px 27px;margin-top:17px}.word-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;margin:23px 0}.word-item{background:var(--soft);border:1px solid var(--line);border-radius:13px;padding:14px 16px;min-height:77px}.word-item b{font-size:15px}.word-item p{font-size:12px;color:var(--muted);line-height:1.5;margin:5px 0 0}.quiz-label{display:flex;justify-content:space-between;gap:15px;align-items:center;color:var(--muted);font-size:12px;font-weight:700;margin-bottom:13px}.quiz-big{font-size:38px;letter-spacing:-1.4px;font-weight:870;text-align:center;line-height:1.3;word-break:break-word;margin:22px 0 7px}.quiz-sub{text-align:center;color:var(--muted);margin:0 0 32px;font-size:12px}.answers{display:grid;grid-template-columns:1fr 1fr;gap:12px}.answer-btn{position:relative;text-align:left;padding:19px 18px;border:1.5px solid var(--line);background:var(--surface);border-radius:13px;min-height:78px;color:var(--ink);font-weight:650;display:flex;align-items:center;gap:12px;line-height:1.5;overflow-wrap:anywhere}.answer-btn:hover:not(:disabled){border-color:var(--teal);background:var(--mint)}.answer-btn .choice-num{font-size:12px;background:var(--soft);border-radius:7px;width:25px;height:25px;display:grid;place-items:center;flex:0 0 auto;color:var(--muted)}.answer-btn.correct{border-color:#29b68f;background:#e9f9f0;color:#266c54}.answer-btn.wrong{border-color:var(--rose);background:var(--redbg);color:var(--rose)}.answer-btn:disabled{opacity:1;cursor:default}.flash-card{background:linear-gradient(145deg,var(--surface),var(--soft));min-height:230px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:17px;border-radius:20px;border:1px solid var(--line);margin:20px 0;cursor:pointer}.flash-card small{color:var(--muted)}.flash-card strong{font-size:26px;text-align:center;line-height:1.5;padding:0 25px;overflow-wrap:anywhere}.feedback{border:1px solid var(--line);padding:17px 19px;border-radius:12px;margin:19px 0;background:var(--soft)}.feedback.correct{border-color:#beeada;background:var(--mint)}.feedback.wrong{border-color:#efcdd1;background:var(--redbg)}.feedback strong{font-size:13px}.feedback p{font-size:13px;line-height:1.6;margin:5px 0 0;overflow-wrap:anywhere}.quiz-actions{display:flex;gap:10px;justify-content:flex-end;align-items:center;margin-top:24px;flex-wrap:wrap}.study-progress{height:9px;overflow:hidden;border-radius:20px;background:var(--soft);margin-bottom:28px}.study-progress div{background:var(--teal);height:100%;border-radius:inherit}.switcher{display:flex;gap:7px;background:var(--soft);padding:5px;border-radius:11px}.switcher button{background:transparent;color:var(--muted);border:0;padding:9px 13px;border-radius:9px;font-size:12px;font-weight:800}.switcher button.active{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}.searchbar{display:flex;gap:10px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:13px;padding:10px 16px;max-width:470px}.searchbar svg{width:20px;height:20px;color:var(--muted)}.searchbar input{border:0;outline:0;color:var(--ink);background:transparent;width:100%;font-size:13px}.filters{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin:17px 0 21px}.filter-select{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:11px 13px;color:var(--ink);font-size:12px}.dict-list{display:grid;gap:8px}.dict-row{display:grid;grid-template-columns:49px minmax(120px,1fr) minmax(160px,1.6fr) 100px;gap:13px;padding:16px 19px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:12px;font-size:13px}.dict-row .idx{color:var(--muted);font-size:11px}.dict-row .english{font-weight:750;font-size:15px;word-break:break-word}.dict-row .korean{color:var(--ink);overflow-wrap:anywhere}.dict-row .src{font-size:11px;color:var(--muted);text-align:right}.dict-row .hidden-meaning{border:0;background:var(--soft);color:var(--teal-dark);padding:9px;border-radius:8px;font-size:12px}.pagination{display:flex;align-items:center;justify-content:center;gap:15px;margin-top:22px}.soft-notice{padding:15px 18px;border-radius:13px;background:var(--mint);color:var(--teal-dark);font-size:12px;line-height:1.7;margin-bottom:18px}.warn-notice{padding:15px 18px;border:1px solid #ebbbbe;background:var(--redbg);border-radius:13px;color:var(--rose);font-size:12px;line-height:1.7;margin:16px 0}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:19px}.settings-card{padding:28px}.settings-card h3{font-size:17px;margin:0 0 9px}.settings-card p{font-size:12px;color:var(--muted);line-height:1.8;margin:0 0 22px}.settings-card .btn{margin-right:8px;margin-bottom:9px}.divider{height:1px;background:var(--line);margin:20px 0}.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,90px);background:#223444;color:white;border-radius:12px;box-shadow:0 20px 40px rgba(0,0,0,.2);padding:13px 22px;z-index:50;font-size:13px;max-width:90vw;opacity:0;transition:.2s;pointer-events:none}.toast.show{transform:translate(-50%,0);opacity:1}.congrats{text-align:center;padding:34px 25px}.congrats .checkmark{width:76px;height:76px;margin:0 auto 21px;background:var(--mint);border-radius:50%;display:grid;place-items:center;color:var(--teal);font-size:34px}.congrats h2{font-size:28px;margin:0 0 10px}.congrats p{color:var(--muted);line-height:1.8}.congrats-stats{display:flex;justify-content:center;gap:35px;margin:26px 0}.congrats-stats div strong{font-size:24px;display:block}.congrats-stats div small{font-size:11px;color:var(--muted)}.mini-list{display:grid;gap:8px;margin:16px 0}.mini-list-row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px;border-radius:9px;background:var(--soft);font-size:12px}.mini-list-row span:last-child{color:var(--muted)}.badge{background:var(--mint);color:var(--teal-dark);font-size:11px;font-weight:750;padding:7px 10px;border-radius:9px}.stack-gap{display:grid;gap:16px}.space-between{display:flex;align-items:center;justify-content:space-between;gap:15px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.center{text-align:center}#banner:not(:empty){max-width:1300px;margin:17px auto -15px;padding:0 42px;width:100%}
@media(max-width:1200px){.day-grid{grid-template-columns:repeat(3,1fr)}.stats-grid{grid-template-columns:repeat(2,1fr)}.section-grid{grid-template-columns:1fr}.main{padding:31px 29px 70px}.topbar{padding:0 30px}}@media(max-width:790px){.app-shell{display:block}.sidebar{height:auto;position:static;width:100%;padding:15px 20px;border-right:0;border-bottom:1px solid var(--line)}.brand{margin:0 0 14px}.brand-mark{height:38px;width:38px}.brand strong{font-size:17px}.nav{display:flex;gap:5px;overflow-x:auto}.nav-item{white-space:nowrap;padding:9px 11px;font-size:11px;gap:6px;width:auto}.nav-item svg{width:16px;height:16px}.sidebar-label,.sidebar-bottom{display:none}.topbar{height:62px;padding:0 20px}.top-actions{gap:8px}.breadcrumbs span:first-child,.breadcrumbs .chevron{display:none}.main{padding:24px 18px 52px}.page-intro h1{font-size:25px}.hero{padding:29px;min-height:230px}.hero h2{font-size:26px}.hero-circle{display:none}.day-grid{grid-template-columns:repeat(2,1fr)}.study-card{padding:26px 21px}.word-grid{grid-template-columns:1fr}.dict-row{grid-template-columns:30px 1fr;gap:7px}.dict-row .korean{grid-column:2}.dict-row .src{grid-column:2;text-align:left}.settings-grid{grid-template-columns:1fr}.footer{padding:20px 15px}}@media(max-width:480px){.stats-grid{gap:10px}.stat-card{padding:16px}.stat-card .stat-value{font-size:21px}.hero{padding:23px}.hero h2{font-size:23px}.hero p{font-size:12px}.day-grid{gap:8px}.day-tile{padding:13px;min-height:112px}.answers{grid-template-columns:1fr}.answer-btn{min-height:60px;padding:14px}.study-card{padding:19px 15px}.quiz-big{font-size:29px}.page-intro{align-items:start}.page-intro h1{font-size:23px}.today-badge{font-size:10px;padding:7px 10px}.breadcrumbs strong{font-size:12px}}

.hero-circle:before{content:"";position:absolute;inset:10px;border-radius:50%;background:#358faf}.hero-circle strong,.hero-circle span{position:relative;z-index:1}@media(max-width:480px){.page-intro{flex-direction:column;align-items:flex-start;gap:8px}}

/* DAY별 10개 묶음 학습 상태 UI */
.study-group-title {display:inline-block;font-size:13px;font-weight:650;color:var(--muted);vertical-align:middle;margin-left:10px;letter-spacing:0}
.learning-steps {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:12px 0 10px}
.learning-step {text-align:center;border:1px solid var(--line);border-radius:12px;padding:12px 5px;font-size:12px;color:var(--muted);background:var(--surface);font-weight:650}
.learning-step.current {background:var(--violet);color:var(--indigo);border-color:var(--indigo)}
.learning-step.passed {background:var(--mint);color:var(--teal-dark)}
.group-progress {display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.group-chip {font-size:12px;font-weight:650;color:var(--muted);background:var(--surface);border:1px solid var(--line);padding:7px 12px;border-radius:100px}
.group-chip.current {border-color:var(--indigo);color:var(--indigo)}
.group-chip.completed {color:var(--teal-dark);background:var(--mint)}
@media(max-width:600px){.study-group-title{display:block;margin:6px 0 0}.learning-step{font-size:11px;padding:10px 4px}}

/* next-day review and weak-word management */
.record-item{gap:16px;align-items:center}.record-word{min-width:0;flex:1}.record-word b{overflow-wrap:anywhere}.record-meta{display:block;margin-top:6px;font-size:10px;color:var(--muted)}.record-controls{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}.weak-tag{border-radius:16px;padding:5px 8px;background:var(--redbg);color:var(--rose);font-weight:750;font-size:10px}.record-controls .btn{min-height:31px;font-size:11px;white-space:nowrap}@media(max-width:520px){.record-item{align-items:start;flex-direction:column}.record-controls{justify-content:flex-start;width:100%}.record-meta{line-height:1.5}}

/* 유상통 브랜드 / 오늘의 단어 / DAY 선택 */
.brand strong{font-size:14px;letter-spacing:-.6px;line-height:1.35;overflow-wrap:anywhere}
.today-word-panel{margin-top:24px;margin-bottom:24px}
.today-word-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:16px}
.today-word{min-width:0;border:1px solid var(--line);background:var(--soft);border-radius:12px;padding:13px;display:flex;flex-direction:column;gap:5px}
.today-word b{font-size:14px;word-break:break-word;color:var(--ink)}
.today-word span{font-size:12px;color:var(--ink);line-height:1.5;overflow-wrap:anywhere}
.today-word small{font-size:10px;color:var(--muted)}
.today-word-bottom{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;margin-top:16px}
.day-select-label{font-size:12px;font-weight:800;color:var(--ink)}
.day-select{min-width:160px;border-color:var(--teal)}
@media(max-width:650px){.today-word-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.today-word{padding:11px}.today-word-panel{margin-bottom:18px}}
@media(max-width:390px){.day-select{min-width:0;max-width:100%;flex:1}.brand strong{font-size:12px}}
.record-controls .btn{white-space:normal;line-height:1.4;text-align:center}

/* 복습 DAY/주차 범위 및 학습 방식 선택 */
.study-methods{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.study-method{display:inline-flex;gap:9px;align-items:center;justify-content:center;min-width:170px;padding:13px 16px;background:var(--surface,#fff);border:1.5px solid var(--line,#d8e3ee);color:var(--ink,#24344f);border-radius:12px;font:inherit;font-weight:700;cursor:pointer;transition:background .15s,border-color .15s}
.study-method svg{width:19px;height:19px;flex-shrink:0}
.study-method.selected{border-color:var(--primary,#149c96);background:rgba(20,156,150,.09);color:var(--primary,#118880)}
.study-method:focus-visible,.review-scope-tabs button:focus-visible{outline:3px solid #5cb3ff;outline-offset:2px}
.review-scope-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}
.review-scope-picker{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:12px 0 17px}
.review-scope-picker label{font-size:13px;font-weight:750;color:var(--ink,#223452)}
.review-scope-picker select{flex:1;max-width:370px;min-width:200px}
.review-scope-count{font-size:12px;color:var(--muted,#687990)}
.review-start-area{display:flex;margin:15px 0;flex-wrap:wrap}
@media(max-width:600px){.study-methods{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.study-method{min-width:0;padding:12px 8px;font-size:13px}.review-scope-picker select{width:100%;max-width:none}.review-start-area .btn{width:100%}}