:root{
  --bg:#f5f7fb;--card:#ffffff;--text:#172033;--muted:#667085;--line:#e4e7ec;
  --primary:#176b52;--primary2:#1f8a65;--navy:#16345b;--yellow:#fff6d9;--red:#fff0f0;
  --shadow:0 18px 50px rgba(16,24,40,.08);--radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans KR",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.65}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{height:74px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px}
.brand strong{display:block;font-size:18px}
.brand small{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--navy));color:white;font-weight:800;font-size:13px}
.top-nav{display:flex;gap:18px;color:#475467;font-size:14px}
.top-nav a:hover{color:var(--primary);font-weight:700}
.hero{background:radial-gradient(circle at top left,#dff8ee,transparent 34%),linear-gradient(135deg,#ffffff,#eef5ff);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.4fr .8fr;gap:32px;align-items:center;padding-top:74px;padding-bottom:70px}
.eyebrow{color:var(--primary);font-weight:800;letter-spacing:.12em;font-size:13px}
h1{font-size:52px;line-height:1.13;margin:12px 0 18px;letter-spacing:-.05em}
.hero-copy{font-size:18px;color:#475467;max-width:650px}
.hero-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.btn{border:1px solid var(--line);background:white;border-radius:14px;padding:12px 18px;cursor:pointer;font-weight:800;box-shadow:0 4px 14px rgba(16,24,40,.05)}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.ghost:hover,.btn.primary:hover{transform:translateY(-1px)}
.hero-card{background:rgba(255,255,255,.75);border:1px solid white;border-radius:30px;padding:26px;box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.stat{background:white;border:1px solid var(--line);border-radius:20px;padding:18px;text-align:center}
.stat span{font-size:30px;font-weight:900;color:var(--navy);display:block}
.stat small{color:var(--muted);font-weight:700}
.notice{grid-column:1/-1;margin:4px 0 0;color:#7a5b00;background:var(--yellow);border:1px solid #f5d77d;border-radius:16px;padding:12px;font-size:14px}
.toolbar{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;padding-top:46px;padding-bottom:20px}
.toolbar h2{margin:0;font-size:30px;letter-spacing:-.03em}
.toolbar p{margin:4px 0 0;color:var(--muted)}
.filters{display:flex;gap:10px;flex-wrap:wrap}
.filters input,.filters select{border:1px solid var(--line);border-radius:14px;background:white;padding:12px 14px;min-width:230px}
.layout{display:grid;grid-template-columns:320px 1fr;gap:22px;align-items:start;padding-bottom:40px}
.unit-list{position:sticky;top:92px;display:grid;gap:10px}
.unit-card{background:white;border:1px solid var(--line);border-radius:18px;padding:16px;cursor:pointer;box-shadow:0 5px 16px rgba(16,24,40,.03)}
.unit-card:hover{border-color:#96d4c2}
.unit-card.active{border-color:var(--primary);box-shadow:0 12px 30px rgba(23,107,82,.12)}
.unit-card h3{margin:6px 0 2px;font-size:17px}
.unit-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.4}
.badges{display:flex;gap:6px;flex-wrap:wrap}
.badge{display:inline-flex;border-radius:999px;padding:3px 9px;font-size:12px;font-weight:800;background:#eef4ff;color:var(--navy)}
.badge.green{background:#e7f8ef;color:var(--primary)}
.badge.done{background:#ecfdf3;color:#027a48}
.study-panel{background:white;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.panel-head{padding:28px 30px;background:linear-gradient(135deg,var(--navy),#25666a);color:white}
.panel-head h2{margin:8px 0 8px;font-size:34px;letter-spacing:-.04em}
.panel-head p{margin:0;color:#d9e7f2}
.panel-meta{display:flex;gap:8px;flex-wrap:wrap}
.tabs{display:flex;gap:4px;padding:10px;background:#f8fafc;border-bottom:1px solid var(--line);overflow:auto}
.tab-btn{border:0;background:transparent;padding:11px 14px;border-radius:12px;cursor:pointer;color:#475467;font-weight:800;white-space:nowrap}
.tab-btn.active{background:white;color:var(--primary);box-shadow:0 4px 12px rgba(16,24,40,.07)}
.tab-content{padding:26px 30px}
.section-title{display:flex;align-items:center;gap:8px;margin:0 0 14px;font-size:22px;letter-spacing:-.02em}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.info-box{border:1px solid var(--line);border-radius:18px;padding:18px;background:#fff}
.info-box h4{margin:0 0 8px;color:var(--navy)}
.info-box ul{margin:0;padding-left:18px}
.info-box li{margin:6px 0}
.yellow{background:var(--yellow);border-color:#efd574}
.red{background:var(--red);border-color:#f3b6b6}
.learning-table{width:100%;border-collapse:collapse;margin-top:12px;border-radius:16px;overflow:hidden}
.learning-table th{background:#e9f6f1;color:var(--primary);text-align:left}
.learning-table th,.learning-table td{padding:12px;border-bottom:1px solid var(--line);font-size:14px}
.keyword-wrap{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.keyword{background:#f2f4f7;border:1px solid #eaecf0;border-radius:999px;padding:6px 10px;font-size:13px;font-weight:700}
.flash-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.flash-card{min-height:120px;border:1px solid #f0d887;background:var(--yellow);border-radius:18px;padding:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;text-align:center;font-weight:900;transition:.2s;position:relative}
.flash-card.flipped{background:#ecfdf3;border-color:#8fe0b1}
.flash-card small{position:absolute;bottom:10px;right:14px;color:#8a6d00;font-weight:600}
.quiz-card,.interview-card,.check-item{border:1px solid var(--line);border-radius:18px;padding:18px;margin-bottom:14px;background:#fff}
.quiz-card h4,.interview-card h4{margin:0 0 12px}
.options{display:grid;gap:8px;margin-top:12px}
.option-btn{border:1px solid var(--line);background:#f8fafc;text-align:left;border-radius:12px;padding:12px;cursor:pointer}
.option-btn.correct{border-color:#12b76a;background:#ecfdf3}
.option-btn.wrong{border-color:#f04438;background:#fff1f3}
.answer-box{margin-top:12px;padding:12px;border-radius:12px;background:#f2f4f7;color:#344054;display:none}
.answer-box.show{display:block}
.reveal{margin-top:8px;border:0;background:var(--primary);color:white;border-radius:12px;padding:9px 12px;cursor:pointer;font-weight:800}
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.check-item{display:flex;gap:10px;align-items:flex-start;margin:0}
.check-item input{margin-top:6px;accent-color:var(--primary)}
.source-box{background:white;border:1px solid var(--line);border-radius:20px;padding:20px;margin-bottom:44px;color:#475467}
.source-box strong{color:var(--text)}
.site-footer{background:#101828;color:#cdd5df;padding:34px 0;font-size:13px}
.site-footer p{margin:4px 0}
.empty{padding:30px;color:var(--muted)}
@media (max-width:900px){
  .hero-grid,.layout,.grid-2,.flash-grid,.check-grid{grid-template-columns:1fr}
  h1{font-size:38px}
  .top-nav{display:none}
  .hero-card{grid-template-columns:1fr}
  .unit-list{position:static}
  .toolbar{align-items:stretch;flex-direction:column}
  .filters input,.filters select{width:100%;min-width:0}
}


.practice-toolbar{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px}
.practice-toolbar p{margin:0;color:var(--muted)}
.btn.mini{padding:10px 14px;border-radius:12px;white-space:nowrap;background:#fff;color:var(--primary);border-color:#9fd8c6}
.btn.mini:hover{background:#ecfdf3}
@media (max-width:700px){
  .practice-toolbar{flex-direction:column}
  .btn.mini{width:100%}
}


.open-hint{display:inline-block;margin-top:12px;color:var(--primary);font-size:13px;font-weight:900}
.quick-open{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 30px;border-bottom:1px solid var(--line);background:#f8fffb}
.quick-open p{margin:0;color:#475467}
.unit-page-body{background:#f6f8fb}
.unit-hero{background:radial-gradient(circle at top left,#dff8ee,transparent 34%),linear-gradient(135deg,#ffffff,#eef5ff);border-bottom:1px solid var(--line)}
.unit-hero-inner{display:grid;grid-template-columns:1.3fr .7fr;gap:26px;align-items:center;padding-top:54px;padding-bottom:48px}
.unit-hero h1{margin:10px 0 12px;font-size:48px}
.unit-hero p{font-size:17px;color:#475467;max-width:760px}
.unit-progress-card{background:white;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
.unit-progress-card strong{font-size:18px}
.unit-progress-card ol{margin:12px 0 0;padding-left:22px;color:#475467}
.single-layout{display:grid;grid-template-columns:260px 1fr;gap:22px;align-items:start;padding-top:28px;padding-bottom:48px}
.single-side{position:sticky;top:92px;display:grid;gap:14px}
.side-card{background:white;border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:0 8px 24px rgba(16,24,40,.04)}
.side-card strong{display:block;margin-bottom:10px}
.side-card a{display:block;padding:9px 8px;border-radius:10px;color:#475467;font-weight:800}
.side-card a:hover{background:#ecfdf3;color:var(--primary)}
.unit-switch{width:100%;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px;text-align:left;margin-bottom:8px;cursor:pointer;font-weight:900}
.unit-switch small{display:block;color:var(--muted);font-weight:600;margin-top:2px}
.unit-switch.active{border-color:var(--primary);background:#ecfdf3;color:var(--primary)}
.single-content{display:grid;gap:18px}
.study-section{background:white;border:1px solid var(--line);border-radius:22px;padding:26px 30px;box-shadow:var(--shadow);scroll-margin-top:92px}
.study-section h2{margin:0 0 14px;font-size:28px;letter-spacing:-.03em}
.muted{color:var(--muted);margin-top:-8px}
@media (max-width:900px){
  .quick-open,.unit-hero-inner,.single-layout{grid-template-columns:1fr;flex-direction:column;align-items:stretch}
  .single-side{position:static}
  .unit-hero h1{font-size:38px}
}


/* ===============================
   Mobile-only optimization
   휴대폰 화면 전용 최적화
   =============================== */
@media (max-width: 768px) {
  body {
    font-size: 15px;
    line-height: 1.62;
    -webkit-text-size-adjust: 100%;
  }

  .wrap {
    padding-left: 16px;
    padding-right: 16px;
  }

  .site-header {
    position: sticky;
    top: 0;
  }

  .header-inner {
    height: 62px;
  }

  .brand {
    gap: 9px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    font-size: 11px;
  }

  .brand strong {
    font-size: 15px;
    line-height: 1.25;
  }

  .brand small {
    display: none;
  }

  .top-nav {
    display: none;
  }

  .hero-grid,
  .unit-hero-inner {
    padding-top: 34px;
    padding-bottom: 34px;
    gap: 18px;
  }

  h1,
  .unit-hero h1 {
    font-size: 32px;
    line-height: 1.18;
    letter-spacing: -0.04em;
  }

  .hero-copy,
  .unit-hero p {
    font-size: 15px;
  }

  .hero-actions {
    gap: 8px;
  }

  .btn {
    min-height: 46px;
    padding: 11px 14px;
    border-radius: 13px;
  }

  .hero-card {
    grid-template-columns: repeat(3, 1fr);
    padding: 14px;
    border-radius: 20px;
    gap: 8px;
  }

  .stat {
    padding: 12px 6px;
    border-radius: 15px;
  }

  .stat span {
    font-size: 22px;
  }

  .stat small {
    font-size: 11px;
  }

  .notice {
    font-size: 12px;
    padding: 10px;
  }

  .toolbar {
    padding-top: 30px;
    padding-bottom: 14px;
  }

  .toolbar h2 {
    font-size: 24px;
  }

  .toolbar p {
    font-size: 14px;
  }

  .filters {
    width: 100%;
  }

  .filters input,
  .filters select {
    min-height: 46px;
    width: 100%;
    min-width: 0;
  }

  .layout {
    gap: 14px;
    padding-bottom: 26px;
  }

  .unit-list {
    gap: 10px;
  }

  .unit-card {
    width: 100%;
    padding: 15px;
    border-radius: 16px;
    text-align: left;
  }

  .unit-card h3 {
    font-size: 18px;
  }

  .unit-card p {
    font-size: 13px;
  }

  .open-hint {
    font-size: 12px;
  }

  .study-panel {
    border-radius: 18px;
  }

  .panel-head {
    padding: 22px 18px;
  }

  .panel-head h2 {
    font-size: 28px;
  }

  .quick-open {
    padding: 14px 18px;
  }

  .quick-open .btn {
    width: 100%;
  }

  .tabs {
    position: sticky;
    top: 62px;
    z-index: 15;
    padding: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .tab-btn {
    padding: 10px 12px;
    font-size: 13px;
  }

  .tab-content {
    padding: 18px;
  }

  .section-title,
  .study-section h2 {
    font-size: 22px;
  }

  .grid-2,
  .flash-grid,
  .check-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .info-box,
  .quiz-card,
  .interview-card,
  .check-item,
  .side-card,
  .study-section {
    border-radius: 16px;
  }

  .info-box {
    padding: 15px;
  }

  .learning-table {
    display: block;
    width: 100%;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .learning-table th,
  .learning-table td {
    padding: 10px;
    font-size: 13px;
  }

  .keyword-wrap {
    gap: 6px;
  }

  .keyword {
    font-size: 12px;
    padding: 5px 8px;
  }

  .flash-card {
    min-height: 96px;
    padding: 16px;
    font-size: 15px;
  }

  .practice-toolbar {
    flex-direction: column;
    gap: 10px;
  }

  .practice-toolbar .btn {
    width: 100%;
  }

  .quiz-card,
  .interview-card {
    padding: 16px;
  }

  .quiz-card h4,
  .interview-card h4 {
    font-size: 16px;
  }

  .options {
    gap: 9px;
  }

  .option-btn {
    min-height: 50px;
    padding: 13px;
    border-radius: 13px;
  }

  .answer-box {
    font-size: 14px;
  }

  .reveal {
    min-height: 44px;
    width: 100%;
  }

  .check-item {
    padding: 15px;
  }

  .check-item input {
    width: 18px;
    height: 18px;
  }

  .source-box {
    margin-bottom: 28px;
    border-radius: 16px;
    font-size: 14px;
  }

  .site-footer {
    padding: 26px 0;
    font-size: 12px;
  }

  /* 과목 단독 페이지 모바일 최적화 */
  .unit-progress-card {
    padding: 16px;
    border-radius: 18px;
  }

  .single-layout {
    gap: 14px;
    padding-top: 18px;
    padding-bottom: 32px;
  }

  .single-side {
    position: static;
    order: 1;
  }

  .single-content {
    order: 2;
  }

  .side-card {
    padding: 14px;
  }

  .side-card:nth-child(2) {
    position: sticky;
    top: 62px;
    z-index: 14;
  }

  .side-card:nth-child(2) a {
    display: inline-block;
    margin-right: 4px;
    margin-bottom: 4px;
    padding: 8px 10px;
    background: #f8fafc;
  }

  #unitSelector {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .unit-switch {
    min-height: 48px;
    margin-bottom: 0;
  }

  .study-section {
    padding: 20px 16px;
    scroll-margin-top: 74px;
  }
}

@media (max-width: 420px) {
  .hero-card {
    grid-template-columns: 1fr;
  }

  h1,
  .unit-hero h1 {
    font-size: 29px;
  }

  .btn {
    width: 100%;
  }

  .panel-head h2 {
    font-size: 25px;
  }

  .badge {
    font-size: 11px;
  }
}


/* ===============================
   Mobile inline study panel fix
   모바일에서 선택 과목 바로 아래에 학습창 표시
   =============================== */
.unit-card-wrap {
  display: grid;
  gap: 10px;
}

.mobile-inline-panel {
  display: none;
}

@media (max-width: 900px) {
  .layout {
    display: block;
  }

  .study-panel {
    display: none;
  }

  .unit-list {
    display: grid;
    gap: 12px;
  }

  .mobile-inline-panel {
    display: block;
    background: white;
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 10px;
  }

  .mobile-inline-panel .panel-head {
    padding: 20px 16px;
  }

  .mobile-inline-panel .panel-head h2 {
    font-size: 25px;
  }

  .mobile-inline-panel .quick-open {
    padding: 13px 16px;
  }

  .mobile-inline-panel .tabs {
    position: sticky;
    top: 62px;
    z-index: 13;
  }

  .mobile-inline-panel .tab-content {
    padding: 16px;
  }
}

@media (min-width: 901px) {
  .mobile-inline-panel {
    display: none !important;
  }
}


/* ===============================
   v6 SPA routing styles
   =============================== */
.app-shell.route-enter {
  animation: routeFade .22s ease-out both;
}

@keyframes routeFade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding-bottom: 40px;
}

.course-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 20px;
  text-align: left;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(16,24,40,.04);
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.course-card:hover {
  transform: translateY(-3px);
  border-color: #96d4c2;
  box-shadow: 0 18px 42px rgba(16,24,40,.08);
}

.course-card h3 {
  margin: 10px 0 6px;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.course-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 900px) {
  .course-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .course-card {
    padding: 16px;
    border-radius: 16px;
  }

  .course-card h3 {
    font-size: 18px;
  }
}


/* ===============================
   v7 wrong note styles
   =============================== */
.wrong-note-layout {
  display: grid;
  gap: 16px;
  padding-top: 28px;
  padding-bottom: 46px;
}

.wrong-note-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.wrong-note-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 12px;
}

.wrong-note-card h3 {
  margin: 10px 0 14px;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.wrong-history {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.wrong-history span {
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  color: #475467;
  font-size: 13px;
}

.wrong-delete {
  border: 1px solid #f3b6b6;
  background: #fff1f3;
  color: #b42318;
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
  font-weight: 800;
}

.wrong-result {
  margin-top: 10px;
}

.right-text {
  color: #027a48;
}

.wrong-text {
  color: #b42318;
}

.wrong-actions {
  margin-top: 14px;
}

.wrong-empty {
  background: white;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 30px;
  box-shadow: var(--shadow);
}

.quiz-save-message {
  margin-top: 10px;
  color: #b42318;
  font-weight: 800;
}

.text-link {
  border: 0;
  background: transparent;
  color: var(--primary);
  font-weight: 900;
  text-decoration: underline;
  cursor: pointer;
  padding: 0 2px;
}

button:disabled {
  opacity: .55;
  cursor: not-allowed;
}

.hero-card {
  grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 768px) {
  .wrong-note-card {
    padding: 16px;
    border-radius: 18px;
  }

  .wrong-note-head {
    flex-direction: column;
  }

  .wrong-delete {
    width: 100%;
    min-height: 42px;
  }

  .wrong-note-card h3 {
    font-size: 17px;
  }
}


/* ===============================
   v9 type-based study mode
   =============================== */
.type-guide {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding-top: 26px;
  padding-bottom: 6px;
}

.type-guide-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px;
  box-shadow: 0 8px 24px rgba(16,24,40,.04);
}

.type-guide-card h3 { margin: 10px 0 8px; font-size: 22px; }
.type-guide-card p { margin: 0; color: var(--muted); }
.type-guide-card.written { border-left: 6px solid #64748b; }
.type-guide-card.interview { border-left: 6px solid var(--primary); }
.written-card-mode { border-top: 5px solid #64748b; }
.interview-card-mode { border-top: 5px solid var(--primary); }
.written-hero { background: radial-gradient(circle at top left,#f1f5f9,transparent 34%),linear-gradient(135deg,#ffffff,#f8fafc); }
.interview-hero { background: radial-gradient(circle at top left,#dcfce7,transparent 34%),linear-gradient(135deg,#ffffff,#eefbf4); }
.written-main { border-top: 5px solid #64748b; }
.interview-main { border-top: 5px solid var(--primary); }
.interview-sub { border-top: 5px solid #facc15; }
.oral-card { border-left: 5px solid var(--primary); }
.oral-check { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin: 12px 0; }
.oral-check label { background: #f8fafc; border: 1px solid var(--line); border-radius: 12px; padding: 10px; font-size: 13px; color: #475467; font-weight: 800; }
.followup-box { margin-top: 14px; background: #fffbeb; border: 1px solid #fde68a; border-radius: 16px; padding: 14px; }
.followup-box strong { display: block; margin-bottom: 8px; }
.followup-box ul { margin: 0; padding-left: 20px; color: #713f12; }
.followup-box li + li { margin-top: 4px; }
@media (max-width: 768px) {
  .type-guide { grid-template-columns: 1fr; padding-top: 18px; }
  .type-guide-card { padding: 16px; border-radius: 18px; }
  .oral-check { grid-template-columns: 1fr; }
}


/* ===============================
   v10 clickable type filter cards
   =============================== */
.type-guide-card {
  width: 100%;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
}

.type-guide-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 42px rgba(16,24,40,.08);
}

.type-guide-card.active {
  border-color: var(--primary);
  background: #f0fdf4;
}

.type-guide-card.written.active {
  border-color: #64748b;
  background: #f8fafc;
}

.type-action {
  display: inline-block;
  margin-top: 14px;
  color: var(--primary);
  font-size: 14px;
}

.type-guide-card.written .type-action {
  color: #334155;
}

.filter-reset {
  white-space: nowrap;
}

@media (max-width: 768px) {
  .type-guide-card {
    min-height: 150px;
  }

  .type-action {
    font-size: 13px;
  }

  .filters {
    display: grid;
    grid-template-columns: 1fr;
  }

  .filter-reset {
    width: 100%;
  }
}


/* ===============================
   v11 compact subject navigation
   모바일 과목 상세화면: 다른 과목 이동 영역 축소
   =============================== */
@media (max-width: 768px) {
  .single-side .side-card:first-child {
    padding: 12px;
    border-radius: 16px;
  }

  .single-side .side-card:first-child strong {
    font-size: 15px;
    margin-bottom: 8px;
  }

  .single-side #unitSelector {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px;
  }

  .single-side .unit-switch {
    min-height: auto;
    margin: 0;
    padding: 9px 8px;
    border-radius: 11px;
    font-size: 13px;
    line-height: 1.2;
  }

  .single-side .unit-switch small {
    margin-top: 3px;
    font-size: 10.5px;
    line-height: 1.25;
    color: #64748b;
  }

  .single-side .unit-switch.active {
    border-color: var(--primary);
    background: #ecfdf3;
  }

  .single-side .side-card:nth-child(2) {
    padding: 10px;
  }

  .single-side .side-card:nth-child(2) strong {
    font-size: 14px;
    margin-bottom: 7px;
  }

  .single-side .side-card:nth-child(2) a {
    font-size: 12px;
    padding: 7px 8px;
    border-radius: 9px;
  }
}

@media (max-width: 420px) {
  .single-side #unitSelector {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .single-side .unit-switch {
    padding: 8px 7px;
    font-size: 12.5px;
  }

  .single-side .unit-switch small {
    font-size: 10px;
  }
}


/* ===============================
   v13 internal study menu scroll fix
   학습 메뉴는 현재 과목 화면 안에서만 이동
   =============================== */
.side-menu-btn {
  display: block;
  width: 100%;
  padding: 9px 8px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: #475467;
  font: inherit;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
}

.side-menu-btn:hover {
  background: #ecfdf3;
  color: var(--primary);
}

.side-menu-btn.wrong-link {
  background: #f8fafc;
}

.section-focus {
  outline: 3px solid rgba(23, 134, 82, .22);
  outline-offset: 4px;
  transition: outline .2s ease;
}

@media (max-width: 768px) {
  .side-menu-btn {
    display: inline-flex;
    width: auto;
    min-height: 34px;
    align-items: center;
    padding: 7px 9px;
    font-size: 12px;
    border-radius: 9px;
    background: #f8fafc;
  }
}


/* ===============================
   v14 wrong note scroll position fix
   오답노트 개별 삭제 후 스크롤 위치 유지
   =============================== */
.wrong-result {
  min-height: 22px;
}

.wrong-note-card {
  scroll-margin-top: 84px;
}


/* ===============================
   v15 home default all subjects
   기본 홈 화면 전체 과목 표시 안내
   =============================== */
.home-default-note {
  margin-top: -6px;
  margin-bottom: 14px;
  padding: 12px 16px;
  border: 1px solid #d9efe4;
  border-radius: 16px;
  background: #f6fffa;
  display: flex;
  gap: 10px;
  align-items: center;
  color: #175b52;
}

.home-default-note strong {
  white-space: nowrap;
  font-weight: 900;
}

.home-default-note span {
  color: #667085;
  font-size: 14px;
}

@media (max-width: 768px) {
  .home-default-note {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
    padding: 11px 13px;
    margin-top: -4px;
  }

  .home-default-note span {
    font-size: 12.5px;
    line-height: 1.45;
  }
}


/* ===============================
   v16 compact course cards
   메인화면 과목 버튼 크기 축소
   =============================== */
.course-card {
  min-height: auto;
  padding: 16px 16px 14px;
  border-radius: 18px;
}

.course-card h3 {
  margin-bottom: 7px;
  font-size: 18px;
  line-height: 1.25;
}

.course-card p {
  margin-bottom: 12px;
  font-size: 13px;
  line-height: 1.45;
}

.course-card .card-meta,
.course-card .course-meta,
.course-card .meta {
  gap: 6px;
  font-size: 12px;
}

.course-card .badge,
.course-card .pill,
.course-card .tag {
  padding: 4px 8px;
  font-size: 11px;
}

@media (max-width: 768px) {
  .course-grid,
  .courses-grid,
  .unit-grid,
  #courseList {
    gap: 10px;
  }

  .course-card {
    padding: 12px 11px;
    border-radius: 15px;
  }

  .course-card h3 {
    margin-bottom: 5px;
    font-size: 15px;
    line-height: 1.25;
  }

  .course-card p {
    margin-bottom: 8px;
    font-size: 11.5px;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .course-card .card-meta,
  .course-card .course-meta,
  .course-card .meta {
    font-size: 10.5px;
  }

  .course-card .badge,
  .course-card .pill,
  .course-card .tag {
    padding: 3px 6px;
    font-size: 10px;
  }
}

@media (max-width: 520px) {
  .course-grid,
  .courses-grid,
  .unit-grid,
  #courseList {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .course-card {
    min-height: 104px;
  }

  .course-card p {
    display: none;
  }

  .course-card h3 {
    font-size: 14.5px;
  }
}

@media (max-width: 360px) {
  .course-grid,
  .courses-grid,
  .unit-grid,
  #courseList {
    grid-template-columns: 1fr;
  }

  .course-card {
    min-height: auto;
  }

  .course-card p {
    display: -webkit-box;
  }
}


/* ===============================
   v18 home blank screen fix
   홈 안내박스 및 검색창 제거 후 렌더링 복구
   =============================== */
.home-default-note {
  display: none !important;
}

.toolbar .filters {
  align-items: center;
}

@media (max-width: 768px) {
  .toolbar .filters {
    gap: 8px;
  }
}


/* ===============================
   v19 course card text alignment
   메인 과목 카드 글씨 위치 통일
   =============================== */
.course-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.course-card .badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: flex-start;
  min-height: 50px;
  width: 100%;
  margin-bottom: 8px;
}

.course-card h3 {
  min-height: 2.8em;
  display: flex;
  align-items: flex-start;
  margin-top: 0;
}

.course-card .open-hint {
  margin-top: auto;
  display: inline-block;
  padding-top: 8px;
}

@media (max-width: 768px) {
  .course-card .badges {
    min-height: 44px;
    gap: 5px;
    margin-bottom: 6px;
  }

  .course-card h3 {
    min-height: 2.7em;
    margin-bottom: 6px;
  }

  .course-card .open-hint {
    padding-top: 6px;
    font-size: 11px;
    line-height: 1.3;
  }
}

@media (max-width: 520px) {
  .course-card {
    min-height: 126px;
  }

  .course-card .badges {
    min-height: 42px;
  }

  .course-card h3 {
    min-height: 2.9em;
    font-size: 14px;
    line-height: 1.35;
  }

  .course-card .open-hint {
    font-size: 10.5px;
  }
}


/* ===============================
   v20 mobile bottom navigation
   하단 고정 네비게이션 바 추가
   =============================== */
.bottom-nav {
  display: none;
}

@media (max-width: 768px) {
  body {
    padding-bottom: calc(84px + env(safe-area-inset-bottom));
  }

  .site-footer {
    padding-bottom: calc(18px + env(safe-area-inset-bottom));
  }

  .bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
    gap: 0;
    padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
    background: rgba(255,255,255,.96);
    border-top: 1px solid #e4e7ec;
    box-shadow: 0 -8px 28px rgba(16,24,40,.08);
    backdrop-filter: blur(10px);
  }

  .bottom-nav__item {
    min-height: 58px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: #98a2b3;
    text-decoration: none;
    border-radius: 14px;
    transition: background .18s ease, color .18s ease, transform .18s ease;
  }

  .bottom-nav__item:active {
    transform: translateY(1px);
  }

  .bottom-nav__item.active {
    color: #176b52;
    background: #ecfdf3;
  }

  .bottom-nav__icon {
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .bottom-nav__icon svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
  }

  .bottom-nav__label {
    font-size: 11px;
    line-height: 1.2;
    font-weight: 800;
    letter-spacing: -0.01em;
  }
}


/* ===============================
   v21 wrong note subject filter
   오답노트 과목별 필터
   =============================== */
.wrong-note-summary {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 12px;
  margin-bottom: 12px;
  padding: 14px 16px;
  border: 1px solid #e4e7ec;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(16,24,40,.04);
}

.wrong-note-summary strong {
  color: #172033;
  font-size: 18px;
  font-weight: 900;
}

.wrong-note-summary span {
  color: #667085;
  font-size: 13px;
  line-height: 1.4;
}

.wrong-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
}

.wrong-filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid #e4e7ec;
  border-radius: 999px;
  background: #fff;
  color: #475467;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  transition: background .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}

.wrong-filter-btn:hover {
  border-color: #9fd8c6;
  background: #f6fffa;
  color: var(--primary);
}

.wrong-filter-btn:active {
  transform: translateY(1px);
}

.wrong-filter-btn.active {
  border-color: var(--primary);
  background: #ecfdf3;
  color: var(--primary);
}

.wrong-filter-btn span {
  min-width: 20px;
  padding: 2px 6px;
  border-radius: 999px;
  background: #f2f4f7;
  color: #667085;
  font-size: 11px;
  line-height: 1.2;
  text-align: center;
}

.wrong-filter-btn.active span {
  background: #ffffff;
  color: var(--primary);
}

.wrong-note-list {
  display: grid;
  gap: 14px;
}

@media (max-width: 768px) {
  .wrong-note-summary {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
    padding: 12px 13px;
  }

  .wrong-note-summary strong {
    font-size: 16px;
  }

  .wrong-note-summary span {
    font-size: 12px;
  }

  .wrong-filter-bar {
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 7px;
    padding: 0 4px 5px;
    margin: 0 -4px 15px;
    scrollbar-width: none;
  }

  .wrong-filter-bar::-webkit-scrollbar {
    display: none;
  }

  .wrong-filter-btn {
    flex: 0 0 auto;
    min-height: 34px;
    padding: 7px 10px;
    font-size: 12px;
    white-space: nowrap;
  }

  .wrong-filter-btn span {
    min-width: 18px;
    font-size: 10px;
  }
}


/* ===============================
   v22 new quiz continue card
   문제풀이 후 새 문제 풀기 흐름 추가
   =============================== */
.new-quiz-continue-card {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid #d9efe4;
  border-radius: 20px;
  background: linear-gradient(135deg, #f6fffa 0%, #ffffff 100%);
  box-shadow: 0 14px 34px rgba(16,24,40,.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.new-quiz-continue-card strong {
  display: block;
  color: #172033;
  font-size: 18px;
  font-weight: 900;
  line-height: 1.35;
}

.new-quiz-continue-card p {
  margin: 6px 0 0;
  color: #667085;
  font-size: 13px;
  line-height: 1.5;
}

.new-quiz-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .new-quiz-continue-card {
    margin-top: 14px;
    padding: 15px;
    border-radius: 17px;
    align-items: stretch;
    flex-direction: column;
    gap: 12px;
  }

  .new-quiz-continue-card strong {
    font-size: 16px;
  }

  .new-quiz-continue-card p {
    font-size: 12px;
  }

  .new-quiz-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .new-quiz-actions .btn {
    width: 100%;
    justify-content: center;
    padding-left: 10px;
    padding-right: 10px;
    font-size: 13px;
  }
}

@media (max-width: 360px) {
  .new-quiz-actions {
    grid-template-columns: 1fr;
  }
}


/* ===============================
   v23 hero message update
   메인 상단 과정명/응원 문구 반영
   =============================== */
.hero-cheer {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 10px 13px;
  border: 1px solid #d9efe4;
  border-radius: 999px;
  background: rgba(255,255,255,.78);
  color: #176b52;
  box-shadow: 0 10px 24px rgba(16,24,40,.05);
}

.hero-cheer span {
  font-size: 15px;
  line-height: 1;
}

.hero-cheer strong {
  font-size: 13px;
  line-height: 1.35;
  font-weight: 900;
}

@media (max-width: 768px) {
  .hero-cheer {
    align-items: flex-start;
    border-radius: 16px;
    padding: 10px 12px;
    margin-top: 14px;
  }

  .hero-cheer strong {
    font-size: 12.5px;
  }
}