:root {
  color-scheme: light;
  --v2-paper: #f7f8f4;
  --v2-ink: #262b26;
  --v2-muted: #687065;
  --v2-line: #dfe5d9;
  --v2-accent: #375cce;
  --v2-accent-soft: #edf1fc;
  --v2-success-soft: #edf3e8;
  --v2-danger: #9b462d;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--v2-ink);
  background: var(--v2-paper);
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; }
button, input, textarea, select { font: inherit; }
button, a { touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
button { color: inherit; cursor: pointer; }
button:disabled { opacity: .45; cursor: not-allowed; }
a { color: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 3px solid #375cce70;
  outline-offset: 4px;
}
::selection { background: #dce5fb; }
[lang="ko"] { font-family: "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif; word-break: keep-all; overflow-wrap: anywhere; }
h1, h2, h3, p { margin: 0; }
h1 { font-size: 33px; letter-spacing: -.04em; line-height: 1.45; font-weight: 550; }
h2 { font-size: 24px; letter-spacing: -.03em; line-height: 1.5; font-weight: 500; }
h3 { font-size: 17px; line-height: 1.65; font-weight: 550; }
p { line-height: 1.85; }
.v2-header { width: min(960px, 100%); padding: 0 40px; min-height: 100px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.v2-brand { display: inline-flex; align-items: center; min-height: 44px; font-size: 24px; font-weight: 750; letter-spacing: -1.3px; text-decoration: none; }
.v2-nav { display: flex; gap: 4px; padding: 4px; border-radius: 30px; background: #ecefe7; }
.v2-nav a { min-height: 44px; min-width: 64px; padding: 12px 18px; border-radius: 24px; color: var(--v2-muted); font-size: 13px; text-decoration: none; text-align: center; }
.v2-nav [aria-current="page"] { background: #fff; color: var(--v2-ink); box-shadow: 0 1px 4px #20282009; }
.v2-shell { width: min(960px, 100%); padding: 60px 40px; margin: auto; min-height: calc(100svh - 170px); }
[data-page="v2-practice"] .v2-header { display: none; }
[data-page="v2-practice"] .v2-shell { width: min(640px, 100%); padding-top: 38px; }
.v2-footer { width: min(960px, 100%); min-height: 70px; padding: 10px 40px; margin: auto; display: flex; justify-content: flex-end; align-items: center; }
[data-page="v2-practice"] .v2-footer { display: none; }
.v2-stack { display: grid; gap: 20px; min-width: 0; }
.v2-spread { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.v2-small, .v2-kicker, .v2-eyebrow { color: var(--v2-muted); font-size: 12px; line-height: 1.85; font-weight: 400; }
.v2-muted { color: var(--v2-muted); font-size: 14px; }
.v2-ko { font-size: 23px; line-height: 1.65; letter-spacing: -.025em; }
.v2-button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 12px 20px; border: 0; border-radius: 16px; background: #edf0e9; text-decoration: none; font-size: 14px; line-height: 1.5; }
.v2-button-primary { min-height: 48px; min-width: 132px; padding: 13px 24px; background: var(--v2-ink); color: #fff; transition: background .15s, box-shadow .15s; }
.v2-button-primary:hover:not(:disabled) { background: var(--v2-accent); box-shadow: 0 3px 12px #375cce16; }
.v2-button-quiet { padding: 12px 0; background: transparent; color: var(--v2-muted); font-size: 12px; }
.v2-button-quiet:hover { color: var(--v2-accent); }
.v2-button-row { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; }
.v2-home-focus { max-width: 640px; margin: 44px auto 0; padding: 34px 0; text-align: center; }
.v2-home-focus .v2-lesson-meta { margin-bottom: 26px; }
.v2-lesson-expression { color: var(--v2-accent); font-size: clamp(48px, 6vw, 68px); letter-spacing: -.055em; line-height: 1.3; font-weight: 550; margin-bottom: 25px; }
.v2-home-focus h1 { font-size: 24px; margin-bottom: 12px; }
.v2-home-focus .v2-muted { max-width: 520px; margin: auto; }
.v2-home-focus .v2-button-row { justify-content: center; margin-top: 30px; }
.v2-home-focus .v2-button-primary { min-width: 152px; border-radius: 18px; }
.v2-learning-choices { width: 100%; max-width: 640px; margin: 24px auto 0; border-top: 1px solid var(--v2-line); padding-top: 24px; }
.v2-learning-choices h2 { font-size: 18px; margin-bottom: 8px; }
.v2-learning-choice { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 0; border-bottom: 1px solid var(--v2-line); }
.v2-learning-choice > div { min-width: 0; }
.v2-learning-choice p { margin: 0 0 4px; }
.v2-learning-choice button { flex-shrink: 0; }
@media (max-width: 480px) {
  .v2-learning-choice { align-items: flex-start; flex-direction: column; gap: 10px; }
}
.v2-session-head { display: grid; gap: 45px; margin-bottom: 8px; }
.v2-session-nav { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.v2-session-nav .v2-button-quiet { font-size: 13px; }
.v2-session-nav .v2-small { text-align: right; }
.v2-task, .v2-result-card { min-width: 0; padding: 0; }
.v2-task > .v2-button, .v2-task > form > .v2-button { justify-self: end; margin-top: 8px; }
.v2-instruction { min-width: 0; padding: 24px; border-radius: 22px; background: var(--v2-accent-soft); }
.v2-instruction .v2-ko { color: var(--v2-accent); font-size: 33px; text-align: center; margin-top: 10px; }
.v2-example-list { display: grid; gap: 25px; margin: 8px 0; }
.v2-task-context, .v2-task-instruction { white-space: pre-line; }
.v2-task-instruction { font-size: 17px; font-weight: 500; }
.v2-inline-ko { word-break: keep-all; overflow-wrap: normal; }
.v2-vocabulary-group { min-width: 0; }
.v2-vocabulary-group h3 { margin-bottom: 10px; font-weight: 500; }
.v2-vocabulary-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; margin: 0; }
.v2-vocabulary-pair { min-width: 0; padding: 14px 0; border-bottom: 1px solid var(--v2-line); }
.v2-vocabulary-word { color: var(--v2-accent); font-size: 23px; line-height: 1.55; }
.v2-vocabulary-meaning { margin: 5px 0 0; color: var(--v2-muted); font-size: 14px; line-height: 1.8; overflow-wrap: anywhere; }
.v2-path-attempt { padding: 22px 0 28px; border-block: 1px solid var(--v2-line); margin: 28px 0 12px; gap: 12px; }
.v2-path-attempt h2 { font-size: 23px; }
.v2-path-attempt > .v2-button { justify-self: start; min-width: 180px; }
.v2-example { min-width: 0; padding-left: 20px; border-left: 2px solid var(--v2-line); }
.v2-example .v2-ko { margin-bottom: 4px; }
.v2-example .v2-muted { font-size: 13px; }
.v2-fieldset { min-width: 0; padding: 0; border: 0; margin: 0; }
.v2-fieldset legend { font-size: 14px; margin-bottom: 12px; line-height: 1.8; }
.v2-options { display: grid; gap: 10px; margin: 6px 0; }
.v2-option { display: flex; align-items: center; gap: 14px; min-height: 59px; padding: 16px 21px; background: #edf0e9; border: 1px solid transparent; border-radius: 16px; cursor: pointer; }
.v2-option:hover { background: #e6eaf1; }
.v2-option:has(input:checked), .v2-score-option:has(input:checked) { background: var(--v2-accent-soft); border-color: #a6b9ee; color: var(--v2-accent); }
.v2-option-copy { display: grid; gap: 4px; }
.v2-option-copy strong { font-size: 20px; font-weight: 500; }
input[type="radio"] { accent-color: var(--v2-accent); flex-shrink: 0; width: 17px; height: 17px; }
.v2-token-bank, .v2-token-answer { display: flex; flex-wrap: wrap; gap: 8px; min-width: 0; }
.v2-token-answer { min-height: 64px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--v2-line); }
.v2-token { font-family: "Apple SD Gothic Neo", "Malgun Gothic", sans-serif; min-height: 44px; padding: 10px 15px; font-size: 18px; background: #edf0e9; }
.v2-token-answer .v2-token { background: var(--v2-accent-soft); color: var(--v2-accent); }
.v2-answer-form { margin-top: 8px; min-width: 0; }
.v2-answer-label { display: block; margin-bottom: 10px; font-size: 13px; color: var(--v2-muted); }
.v2-answer-composer { display: flex; align-items: center; gap: 10px; width: 100%; padding: 14px 16px; border: 1px solid var(--v2-line); border-radius: 8px; background: #fff; box-shadow: 0 2px 5px #26312203; transition: border-color .15s, box-shadow .15s; }
.v2-answer-composer:focus-within { border-color: #98aceb; box-shadow: 0 0 0 3px #375cce0c; }
.v2-answer-composer:has([aria-invalid="true"]) { border-color: #bf7057; }
.v2-answer-composer textarea { display: block; flex: 1; min-width: 0; box-sizing: content-box; height: 28px; max-height: 140px; margin: 7px 0; padding: 0; color: var(--v2-ink); background: transparent; font-size: 19px; line-height: 28px; border: 0; border-radius: 0; resize: none; overflow-y: hidden; }
.v2-answer-composer textarea:focus { outline: none; }
.v2-answer-composer textarea::placeholder { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif; font-size: 14px; color: #788170; }
.v2-answer-submit { flex-shrink: 0; min-height: 44px; border-radius: 8px; }
.v2-answer-submit:hover:not(:disabled) { background: var(--v2-accent); }
.v2-answer-actions { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 14px; }
.v2-draft-note { margin: 0; font-size: 11px; }
.v2-fill-frame { flex-wrap: wrap; gap: 10px; }
.v2-fill-frame textarea { flex: 1 1 120px; min-width: 100px; border-bottom: 2px solid var(--v2-accent); }
.v2-fill-fixed { font-size: 21px; line-height: 1.7; }
.v2-help { min-width: 0; border-top: 1px solid var(--v2-line); margin-top: 8px; font-size: 13px; }
.v2-help > summary { min-height: 46px; padding: 16px 0; color: var(--v2-muted); cursor: pointer; }
.v2-help[open] > summary { margin-bottom: 4px; }
.v2-help .v2-button-row { gap: 24px; }
.v2-word-bank { margin-top: 8px; font-size: 16px; color: var(--v2-muted); }
.v2-notice, .v2-success, .v2-neutral, .v2-evaluation { min-width: 0; margin: 0; padding: 17px 20px; border-radius: 16px; font-size: 13px; line-height: 1.85; background: var(--v2-accent-soft); overflow-wrap: anywhere; }
.v2-evaluation { background: #edf0f2; }
.v2-evaluation[data-verdict="passed"], .v2-evaluation[data-verdict="passed_with_notes"], .v2-success { background: var(--v2-success-soft); }
.v2-evaluation[data-verdict="retry"] { background: var(--v2-accent-soft); }
.v2-verdict { font-size: 14px; font-weight: 600; }
.v2-evaluation .v2-stack, .v2-notice .v2-stack { gap: 12px; }
.v2-evaluation .v2-ko, .v2-notice .v2-ko { font-size: 19px; color: var(--v2-accent); }
.v2-response-label { margin-bottom: 3px; font-weight: 550; }
.v2-notice .v2-instruction { padding: 8px 0; }
.v2-error { color: var(--v2-danger); font-size: 12px; line-height: 1.65; margin: 10px 0 0; overflow-wrap: anywhere; }
.v2-saved-status { color: var(--v2-muted); font-size: 13px; }
.v2-score-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.v2-score-option { display: flex; align-items: center; gap: 7px; min-height: 48px; padding: 13px 10px; border: 1px solid transparent; border-radius: 13px; background: #edf0e9; font-size: 12px; cursor: pointer; }
.v2-willingness-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.v2-willingness-grid .v2-score-option { justify-content: center; }
.v2-feedback .v2-fieldset .v2-small { margin-bottom: 15px; }
.v2-feedback .v2-button { justify-self: start; }
.v2-result-list { display: grid; gap: 16px; }
.v2-result-line { padding: 16px 0; border-bottom: 1px solid var(--v2-line); min-width: 0; }
.v2-result-line > * + * { margin-top: 7px; }
.v2-result-task { font-size: 13px; line-height: 1.8; }
.v2-answer-quote { white-space: pre-wrap; color: var(--v2-muted); font-size: 17px; overflow-wrap: anywhere; }
.v2-answer-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-block: 14px; }
.v2-answer-pair:has(> .v2-answer-source:only-child) { grid-template-columns: 1fr; }
.v2-answer-source { min-width: 0; }
.v2-answer-source > * + * { margin-top: 6px; }
.v2-author-reference .v2-answer-quote { color: var(--v2-accent); }
.v2-answer-context { font-size: 15px; color: var(--v2-muted); white-space: pre-wrap; }
.v2-result-line > .v2-ko { color: var(--v2-muted); font-size: 17px; }
.v2-result-actions { justify-content: space-between; margin: 10px 0 8px; }
.v2-history-head { margin: 14px 0 12px; }
.v2-history-head h1 { font-size: 30px; margin-bottom: 14px; }
.v2-history-chapters { min-width: 0; }
.v2-history-chapter { border-bottom: 1px solid var(--v2-line); }
.v2-history-chapter > summary { min-height: 64px; padding: 20px 0; cursor: pointer; }
.v2-history-chapter > summary h2 { display: inline; font-size: 18px; font-weight: 500; }
.v2-history-chapter > summary .v2-small { float: right; margin-top: 4px; }
.v2-history-row { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 14px; padding: 25px 0; border-top: 1px solid var(--v2-line); }
.v2-row-number { color: var(--v2-muted); font-size: 12px; line-height: 24px; white-space: nowrap; }
.v2-history-row h3 { font-size: 14px; font-weight: 500; }
.v2-history-status { display: flex; flex-wrap: wrap; gap: 4px 20px; margin-top: 7px; color: var(--v2-muted); font-size: 12px; line-height: 1.9; }
.v2-course-done { color: var(--v2-accent); }
.v2-history-detail { margin-top: 4px; }
.v2-history-detail > summary { width: fit-content; min-height: 44px; padding: 12px 0; font-size: 12px; color: var(--v2-muted); cursor: pointer; }
.v2-ai-notice { color: var(--v2-muted); font-size: 11px; line-height: 1.9; margin: 40px 0 0; }
.v2-login-shell { min-height: 100svh; display: grid; place-items: center; padding-block: 32px; }
.v2-auth-card { width: min(100%, 380px); }
.v2-auth-card h1 { font-size: 30px; margin: 16px 0; }
.v2-auth-card > .v2-muted { margin-bottom: 28px; }
.v2-auth-card label { font-size: 13px; margin-bottom: -12px; }
.v2-auth-card input { width: 100%; min-height: 48px; border: 1px solid var(--v2-line); border-radius: 13px; padding: 12px 15px; background: #fff; }
.v2-auth-card .v2-button-primary { margin-top: 8px; }
.v2-skeleton { border-radius: 14px; background: #e9ece4; animation: v2-pulse 1.5s ease-in-out infinite; }
.v2-skeleton-heading { width: min(68%, 430px); height: 44px; }
.v2-skeleton-card { height: 240px; }
.v2-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; }
.skip-link { position: fixed; top: -100px; z-index: 10; padding: 14px; border-radius: 10px; background: var(--v2-ink); color: #fff; }
.skip-link:focus { top: 10px; }
.v2-noscript { max-width: 600px; margin: 20px auto; padding: 20px; }
.v2-shell:has([data-execution-policy="lesson-ten-1"]) { width: min(1080px, 100%); }
.v2-study-layout { display: grid; grid-template-columns: minmax(0, 1fr) 270px; align-items: start; gap: 40px; }
.v2-study-side { background: #eef0e9; border-radius: 8px; padding: 24px; gap: 16px; min-width: 0; }
.v2-study-side h2, .v2-study-side h3 { font-size: 17px; }
.v2-study-side .v2-muted { font-size: 13px; }
.v2-study-side .v2-score-grid { grid-template-columns: 1fr; }
.v2-study-side .v2-score-option { background: #fff; }
.v2-study-side .v2-help { margin-top: 0; }
.v2-study-side .v2-button-row { gap: 8px; }
.v2-study-side > .v2-button { width: 100%; }
[data-execution-policy="lesson-ten-1"] .v2-session-head { gap: 24px; margin-bottom: 8px; }
[data-execution-policy="lesson-ten-1"] .v2-attempt-exit { order: 10; margin-top: 20px; }
[data-execution-policy="lesson-ten-1"] .v2-task { border-top: 1px solid var(--v2-line); padding-top: 24px; }
[data-execution-policy="lesson-ten-1"] .v2-result-evidence { min-width: 0; }
[data-execution-policy="lesson-ten-1"] .v2-result-evidence > .v2-stack { gap: 12px; }
.v2-feedback-step .v2-evaluation { border-left: 3px solid var(--v2-accent); border-radius: 0 8px 8px 0; }
@media (max-width: 860px) {
  .v2-study-layout { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .v2-study-side { padding: 20px; }
}
@keyframes v2-pulse { 50% { opacity: .55; } }
@media (max-width: 700px) {
  .v2-header { min-height: 84px; padding: 0 24px; }
  .v2-shell { padding: 36px 24px 45px; }
  .v2-footer { padding-inline: 24px; }
  [data-page="v2-practice"] .v2-shell { padding-top: 20px; }
  .v2-brand { font-size: 23px; }
  .v2-nav a { min-width: 58px; padding: 12px 14px; }
  .v2-home-focus { margin-top: 46px; padding: 25px 0; }
  .v2-lesson-expression { font-size: 48px; }
  .v2-home-focus h1 { font-size: 21px; }
  h1 { font-size: 27px; }
  h2 { font-size: 22px; }
  .v2-muted { font-size: 13px; }
  .v2-session-head { gap: 35px; }
  .v2-instruction { padding: 23px 15px; border-radius: 19px; }
  .v2-instruction .v2-ko { font-size: 28px; }
  .v2-example { padding-left: 14px; }
  .v2-example .v2-ko { font-size: 19px; }
  .v2-button-primary { min-width: 116px; font-size: 13px; padding: 13px 19px; }
  .v2-option { min-height: 56px; padding: 15px 18px; }
  .v2-answer-composer textarea { font-size: 18px; }
  .v2-history-head h1 { font-size: 27px; }
  .v2-history-chapter > summary h2 { font-size: 17px; }
  .v2-history-row { gap: 10px; padding: 20px 0; grid-template-columns: 28px minmax(0, 1fr); }
}
@media (max-width: 620px) {
  .v2-answer-pair { grid-template-columns: 1fr; gap: 16px; }
  .v2-answer-actions { align-items: flex-start; flex-direction: column; gap: 10px; }
  .v2-answer-actions > .v2-button { align-self: flex-end; }
  .v2-score-grid { grid-template-columns: 1fr; }
  .v2-score-option { padding: 12px 15px; font-size: 13px; }
  .v2-willingness-grid .v2-score-option { padding: 10px 2px; gap: 4px; }
  .v2-history-chapter > summary .v2-small { float: none; display: block; margin: 4px 0 0 16px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

.v2-preview-notice { margin: 0 0 1.5rem; padding: .85rem 1rem; border: 1px solid #cdd4c7; border-radius: 12px; color: #4a5346; font-size: .875rem; line-height: 1.6; }