:root {
  --ink: #182033;
  --muted: #5d6574;
  --line: #dfe3e9;
  --soft: #f5f6f8;
  --surface: #fff;
  --blue: #245cbd;
  --blue-dark: #183f86;
  --blue-soft: #eef4ff;
  --correct: #14734a;
  --correct-soft: #edf8f2;
  --wrong: #b62e3a;
  --wrong-soft: #fff0f1;
  --radius: 14px;
  --shadow: 0 18px 48px rgba(24, 32, 51, 0.11);
}

* { box-sizing: border-box; }
html { color-scheme: light; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: #f7f8fa;
  font-family: Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  line-height: 1.6;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(36, 92, 189, 0.25);
  outline-offset: 2px;
}
button:disabled { cursor: default; opacity: 0.42; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.full-button { width: 100%; }
.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;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  padding: 8px max(18px, env(safe-area-inset-left));
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.brand-button {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 9px;
  padding: 0;
  color: var(--ink);
  background: transparent;
  border: 0;
  text-align: left;
}
.brand-button strong, .brand-button small { display: block; }
.brand-button strong { font-size: 0.89rem; line-height: 1.25; }
.brand-button small { color: var(--muted); font-size: 0.72rem; }
.brand-mark {
  display: grid;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  place-items: center;
  color: #fff;
  background: #18233a;
  border-radius: 10px;
  font-size: 0.82rem;
  font-weight: 900;
}
.header-button, .back-button, .close-button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  background: transparent;
  border: 0;
  font-weight: 750;
}
.header-button { gap: 5px; padding: 7px 9px; font-size: 0.86rem; }
.close-button { width: 44px; padding: 0; color: var(--muted); font-size: 1.6rem; }

.app-shell { width: min(760px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 96px; }
.center-card, .login-card {
  width: min(420px, 100%);
  margin: 12vh auto 0;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: center;
}
.center-card p { margin: 0; color: var(--muted); }
.spinner {
  width: 28px;
  height: 28px;
  margin: 0 auto 14px;
  border: 3px solid var(--line);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.certification-hub { width: min(680px, 100%); margin: 0 auto; }
.hub-heading { margin: 34px 2px 26px; }
.hub-heading h1 { margin: 3px 0 7px; font-size: clamp(1.85rem, 7vw, 2.4rem); line-height: 1.16; letter-spacing: -0.05em; }
.hub-heading > p:last-child { margin: 0; color: var(--muted); }
.hub-resume-card {
  display: flex;
  width: 100%;
  min-height: 92px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
  padding: 18px 20px;
  color: #fff;
  background: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 16px;
  text-align: left;
}
.hub-resume-card:hover { background: var(--blue-dark); border-color: var(--blue-dark); }
.hub-resume-copy { min-width: 0; }
.hub-resume-copy small, .hub-resume-copy strong, .hub-resume-copy span { display: block; }
.hub-resume-copy small { color: rgba(255,255,255,0.78); font-size: 0.74rem; font-weight: 850; }
.hub-resume-copy strong { margin-top: 2px; overflow: hidden; font-size: 1.04rem; text-overflow: ellipsis; white-space: nowrap; }
.hub-resume-copy span { margin-top: 3px; color: rgba(255,255,255,0.78); font-size: 0.76rem; }
.hub-resume-card > b { font-size: 1.75rem; font-weight: 400; }
.hub-section-label { margin: 0 2px 9px; color: var(--muted); font-size: 0.76rem; font-weight: 850; }
.certification-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.certification-card {
  display: grid;
  min-width: 0;
  gap: 18px;
  padding: 22px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  text-align: left;
}
.certification-card:hover { border-color: #a8b9d6; box-shadow: 0 12px 28px rgba(24, 32, 51, 0.08); }
.certification-card-heading, .certification-card-progress > span { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.certification-card-heading strong { font-size: 1.18rem; }
.certification-card-heading small { color: var(--muted); font-size: 0.78rem; }
.certification-type-summary { display: flex; flex-wrap: wrap; gap: 7px; }
.certification-type-summary > span { min-width: 92px; padding: 10px 12px; background: var(--soft); border-radius: 10px; }
.certification-type-summary b, .certification-type-summary small { display: block; }
.certification-type-summary b { font-size: 0.84rem; }
.certification-type-summary small { margin-top: 1px; color: var(--muted); font-size: 0.72rem; }
.certification-card-progress small { color: var(--muted); font-size: 0.74rem; }
.certification-card-progress b { font-size: 0.8rem; }
.certification-card-progress > i { display: block; height: 6px; margin-top: 7px; overflow: hidden; background: #e4e9f1; border-radius: 99px; }
.certification-card-progress em { display: block; height: 100%; background: var(--blue); border-radius: inherit; }
.certification-card-action { color: var(--blue); font-size: 0.82rem; font-weight: 850; text-align: right; }

.dashboard { width: min(600px, 100%); margin: 0 auto; }
.dashboard-context { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 0 2px 12px; }
.dashboard-context strong { overflow: hidden; font-size: 0.88rem; text-overflow: ellipsis; white-space: nowrap; }
.context-back-button { min-height: 38px; padding: 5px 8px 5px 2px; color: var(--muted); background: transparent; border: 0; font-size: 0.8rem; font-weight: 800; }
.exam-type-switch {
  display: grid;
  grid-template-columns: repeat(var(--exam-type-count, 2), minmax(0, 1fr));
  gap: 7px;
  padding: 5px;
  background: #e9edf3;
  border-radius: 14px;
}
.exam-type-tab { min-height: 58px; padding: 8px 12px; color: var(--muted); background: transparent; border: 0; border-radius: 10px; }
.exam-type-tab strong, .exam-type-tab small { display: block; }
.exam-type-tab strong { font-size: 0.96rem; }
.exam-type-tab small { margin-top: 1px; font-size: 0.7rem; }
.exam-type-tab.active { color: var(--ink); background: #fff; box-shadow: 0 2px 9px rgba(24, 32, 51, 0.09); }
.track-switch {
  display: grid;
  grid-template-columns: repeat(var(--track-count, 2), minmax(96px, 1fr));
  gap: 4px;
  padding: 4px;
  overflow-x: auto;
  background: #edeff3;
  border-radius: 12px;
}
.track-book-switch { width: min(360px, 100%); margin: 10px auto 0; background: transparent; border: 1px solid var(--line); }
.track-book-switch .track-tab { min-height: 38px; padding: 6px 12px; font-size: 0.8rem; }
.track-tab {
  min-height: 42px;
  padding: 8px 14px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 9px;
  font-weight: 800;
}
.track-tab.active { color: var(--ink); background: #fff; box-shadow: 0 2px 8px rgba(24, 32, 51, 0.08); }
.dashboard-title { margin: 24px 2px 16px; }
.eyebrow {
  margin: 0 0 3px;
  color: var(--blue);
  font-size: 0.77rem;
  font-weight: 850;
  letter-spacing: 0.09em;
}
.dashboard-title h1 { margin: 0; font-size: clamp(1.65rem, 6vw, 2rem); line-height: 1.22; letter-spacing: -0.045em; }

.resume-card, .scope-button, .primary-start, .quick-button {
  width: 100%;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  text-align: left;
}
.resume-card {
  display: block;
  margin-bottom: 12px;
  padding: 17px 17px 15px;
  color: #fff;
  border-color: var(--blue);
  border-radius: var(--radius);
  background: var(--blue);
}
.resume-card:hover { border-color: var(--blue-dark); background: var(--blue-dark); }
.resume-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: rgba(255,255,255,0.82); font-size: 0.79rem; font-weight: 800; }
.resume-top strong { color: rgba(255,255,255,0.82); font-size: 0.78rem; }
.resume-title { display: block; margin: 5px 0 11px; color: #fff; font-size: 1.05rem; font-weight: 850; }
.resume-card .resume-track { background: rgba(255,255,255,0.28); }
.resume-card .resume-track i { background: #fff; }
.resume-track, .progress-track, .mini-track { display: block; height: 5px; overflow: hidden; background: #dce3ee; border-radius: 99px; }
.resume-track i, .progress-bar, .mini-track i { display: block; height: 100%; background: var(--blue); border-radius: inherit; transition: width 0.2s ease; }
.scope-button {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 16px;
  border-radius: var(--radius);
}
.scope-button > span:first-child { min-width: 0; }
.scope-button small, .scope-button strong { display: block; }
.scope-button small { color: var(--muted); font-size: 0.76rem; }
.scope-button strong { overflow: hidden; font-size: 0.98rem; text-overflow: ellipsis; white-space: nowrap; }
.scope-button > span:last-child { display: flex; flex: 0 0 auto; align-items: center; gap: 8px; color: var(--muted); font-size: 0.81rem; }
.scope-button b, .primary-start > b { font-size: 1.55rem; font-weight: 400; }
.primary-start {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  gap: 13px;
  min-height: 84px;
  align-items: center;
  margin-top: 12px;
  padding: 14px 16px;
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
  border-radius: var(--radius);
}
.primary-start:hover { background: var(--blue-dark); }
.start-icon { display: grid; width: 46px; height: 46px; place-items: center; background: rgba(255,255,255,0.14); border-radius: 12px; font-size: 0.86rem; font-weight: 900; }
.primary-start strong, .primary-start small { display: block; }
.primary-start strong { font-size: 1.06rem; }
.primary-start small { margin-top: 2px; color: rgba(255,255,255,0.82); font-size: 0.8rem; }
.practical-stage2-start { margin-top: 10px; color: var(--blue); background: #fff; border-color: #b9c9e4; }
.practical-stage2-start:hover { background: var(--blue-soft); }
.practical-stage2-start .start-icon { color: var(--blue); background: var(--blue-soft); }
.practical-stage2-start small { color: var(--muted); }
.quick-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 10px; }
.quick-button {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 10px;
  min-height: 68px;
  align-items: center;
  padding: 10px 12px;
  border-radius: 12px;
}
.quick-button:not(:disabled):hover, .scope-button:hover { border-color: #bdc9dc; }
.quick-icon { display: grid; width: 36px; height: 36px; place-items: center; color: var(--blue); background: var(--blue-soft); border-radius: 10px; font-weight: 900; }
.wrong-icon { color: var(--wrong); background: var(--wrong-soft); }
.quick-button strong, .quick-button small { display: block; }
.quick-button strong { font-size: 0.92rem; }
.quick-button small { overflow: hidden; color: var(--muted); font-size: 0.76rem; text-overflow: ellipsis; white-space: nowrap; }
.learning-tools { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 16px; }
.secondary-learning-options { margin-top: 16px; border-top: 1px solid var(--line); }
.secondary-learning-options > summary {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 4px;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}
.secondary-learning-options > summary::-webkit-details-marker { display: none; }
.secondary-learning-options > summary strong, .secondary-learning-options > summary small { display: block; }
.secondary-learning-options > summary strong { font-size: 0.9rem; }
.secondary-learning-options > summary small { margin-top: 1px; color: var(--muted); font-size: 0.72rem; font-weight: 500; }
.secondary-learning-options > summary b { color: var(--muted); font-size: 1.1rem; transition: transform 0.15s ease; }
.secondary-learning-options[open] > summary b { transform: rotate(180deg); }
.secondary-learning-options .quick-grid { margin-top: 0; }
.secondary-learning-options .learning-tools { margin: 8px 0 2px; }
.tool-button {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 9px;
  min-height: 64px;
  align-items: center;
  padding: 10px 12px;
  color: var(--ink);
  background: var(--soft);
  border: 1px solid transparent;
  border-radius: 12px;
  text-align: left;
}
.tool-button:not(:disabled):hover { border-color: #c8d2e2; background: #f4f7fb; }
.tool-button:disabled { opacity: 0.58; }
.review-tool { grid-column: 1 / -1; background: #f4f8ff; border-color: #dce6f7; }
.tool-icon { display: grid; width: 34px; height: 34px; place-items: center; color: var(--blue); background: #fff; border-radius: 9px; font-size: 0.9rem; font-weight: 900; }
.tool-button strong, .tool-button small { display: block; }
.tool-button strong { font-size: 0.9rem; }
.tool-button small { margin-top: 2px; color: var(--muted); font-size: 0.75rem; }
.tool-button b { color: var(--muted); font-size: 1.3rem; font-weight: 400; }

.quiz { width: min(720px, 100%); margin: 0 auto; }
.quiz-toolbar { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 15px; align-items: center; margin-bottom: 14px; }
.back-button { padding: 0 3px; color: var(--muted); }
.quiz-progress-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 6px; color: var(--muted); font-size: 0.79rem; }
.quiz-progress-meta span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.quiz-progress-meta strong { flex: 0 0 auto; color: var(--ink); }
.mock-timer { flex: 0 0 auto; padding: 3px 7px; color: var(--blue); background: var(--blue-soft); border-radius: 6px; font-variant-numeric: tabular-nums; font-weight: 900; }
.mock-timer.urgent { color: var(--wrong); background: var(--wrong-soft); }
.progress-track { height: 4px; }
.question-card { padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: 16px; }
.question-meta { display: flex; min-height: 38px; align-items: flex-start; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 0.8rem; }
.location-line { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; padding-top: 7px; }
.stage-badge { padding: 3px 7px; color: var(--blue); background: var(--blue-soft); border-radius: 6px; font-size: 0.73rem; font-weight: 850; }
.question-actions { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 2px; }
.bookmark-button { min-width: 44px; min-height: 44px; padding: 4px 8px; color: var(--muted); background: transparent; border: 0; border-radius: 10px; font-size: 1.3rem; }
.bookmark-button.active { color: #b67600; background: #fff7dc; }
.report-question-button { min-width: 48px; min-height: 44px; padding: 6px 8px; color: var(--muted); background: transparent; border: 0; border-radius: 9px; font-size: 0.76rem; font-weight: 800; }
.report-question-button:hover { color: var(--blue); background: var(--blue-soft); }
.status-pill { display: inline-block; margin-top: 12px; padding: 4px 9px; color: var(--muted); background: var(--soft); border-radius: 99px; font-size: 0.74rem; font-weight: 800; }
.status-pill.correct { color: var(--correct); background: var(--correct-soft); }
.status-pill.wrong { color: var(--wrong); background: var(--wrong-soft); }
.status-pill.selected { color: var(--blue); background: var(--blue-soft); }
.question-stem { margin: 15px 0 24px; font-size: clamp(1.2rem, 3.8vw, 1.44rem); line-height: 1.72; letter-spacing: -0.025em; }
.question-asset { display: block; max-width: 100%; margin: 0 auto 20px; border: 1px solid var(--line); border-radius: 10px; }
.options { display: grid; gap: 9px; }
.option-button {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 10px;
  min-height: 62px;
  align-items: center;
  padding: 10px 14px;
  color: var(--ink);
  background: #fff;
  border: 1px solid #dfe3e9;
  border-radius: 12px;
  text-align: left;
  font-size: 0.98rem;
  line-height: 1.6;
}
.option-button:not(:disabled):hover { border-color: #9fb4d9; background: #fafcff; }
.option-number { display: grid; width: 34px; height: 34px; place-items: center; color: var(--muted); background: var(--soft); border-radius: 9px; font-weight: 800; }
.option-button.selected { border-color: var(--blue); background: var(--blue-soft); }
.option-button.correct { color: var(--correct); background: var(--correct-soft); border-color: #9cd0b5; }
.option-button.correct .option-number { color: #fff; background: var(--correct); }
.option-button.wrong { color: var(--wrong); background: var(--wrong-soft); border-color: #edafb5; }
.option-button.wrong .option-number { color: #fff; background: var(--wrong); }
.choice-submit-panel { display: grid; gap: 9px; margin-top: 14px; }
.choice-submit-panel p { margin: 0; color: var(--muted); font-size: 0.8rem; text-align: center; }
.choice-submit-button { width: 100%; min-height: 50px; }
.fill-answer-form { margin-top: 4px; padding: 18px; background: var(--soft); border-radius: 12px; }
.fill-answer-form > label, .dialog-form label, .security-form label, .management-details > label { display: block; margin-bottom: 7px; font-size: 0.8rem; font-weight: 800; }
.fill-answer-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
input, select, textarea { width: 100%; color: var(--ink); background: #fff; border: 1px solid #d9dde5; border-radius: 10px; }
input, select { min-height: 46px; padding: 9px 12px; }
textarea { padding: 11px 12px; resize: vertical; }
.field-help { margin: 7px 1px 0; color: var(--muted); font-size: 0.76rem; }
.primary-button, .secondary-button, .small-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 9px 15px;
  border-radius: 10px;
  font-weight: 800;
  text-decoration: none;
}
.primary-button { color: #fff; background: var(--blue); border: 1px solid var(--blue); }
.secondary-button { color: var(--ink); background: #fff; border: 1px solid #d9dde5; }
.small-button { min-height: 36px; padding: 6px 10px; color: var(--blue); background: var(--blue-soft); border: 0; font-size: 0.75rem; }
.danger-button { color: var(--wrong); background: var(--wrong-soft); }

.reflection-panel { margin-top: 18px; padding: 16px; background: #fff; border: 1px solid var(--line); border-radius: 12px; }
.reflection-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 13px; }
.reflection-heading strong { font-size: 0.9rem; }
.reflection-heading span { color: var(--correct); font-size: 0.72rem; font-weight: 800; }
.reflection-panel fieldset { min-width: 0; margin: 0 0 12px; padding: 0; border: 0; }
.reflection-panel legend { margin-bottom: 7px; color: var(--muted); font-size: 0.76rem; font-weight: 800; }
.chip-options { display: flex; flex-wrap: wrap; gap: 7px; }
.chip-options button { min-height: 44px; padding: 7px 12px; color: var(--muted); background: var(--soft); border: 1px solid transparent; border-radius: 9px; font-size: 0.78rem; font-weight: 800; }
.chip-options button.active, .chip-options button[aria-pressed="true"] { color: var(--blue); background: var(--blue-soft); border-color: #b9cbed; }
.reflection-save { width: 100%; }

.explanation { scroll-margin-top: 74px; margin-top: 22px; padding: 20px; background: #f7f9fc; border: 1px solid #dfe6f1; border-radius: 13px; }
.explanation-result { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 14px; border-bottom: 1px solid #dde4ee; }
.explanation-result strong.correct { color: var(--correct); }
.explanation-result strong.wrong { color: var(--wrong); }
.explanation-result span { color: var(--muted); font-size: 0.82rem; font-weight: 800; }
.explanation-title { margin: 18px 0 5px; color: var(--blue); font-size: 0.76rem; font-weight: 850; }
.easy-explanation-text { margin: 0; font-size: 0.98rem; line-height: 1.75; white-space: pre-line; }
.memory-tip { margin: 15px 0 0; padding: 11px 12px; color: #765700; background: #fff7d7; border-radius: 9px; font-size: 0.85rem; }
.source-explanation-details, .note-details, .management-details { margin-top: 15px; border-top: 1px solid var(--line); }
.source-explanation-details summary, .note-details summary, .management-details summary { padding: 14px 0; color: var(--muted); cursor: pointer; font-size: 0.86rem; font-weight: 800; }
.source-explanation-details p, .source-note { color: var(--muted); font-size: 0.86rem; line-height: 1.7; white-space: pre-line; }
.explanation-next { width: 100%; margin-top: 16px; }
.note-details { margin-top: 20px; }
.note-details textarea { margin-bottom: 8px; }
.quiz-nav {
  position: sticky;
  z-index: 10;
  bottom: 0;
  display: grid;
  grid-template-columns: 1fr 1fr 1.3fr;
  gap: 8px;
  margin-top: 12px;
  padding: 10px 0 max(10px, env(safe-area-inset-bottom));
  background: linear-gradient(rgba(250,250,250,0), #fafafa 22%);
}
.quiz.mock-mode .quiz-nav { grid-template-columns: 0.8fr 0.8fr 1fr 1.25fr; }

dialog { color: var(--ink); }
dialog::backdrop { background: rgba(17, 24, 39, 0.46); backdrop-filter: blur(2px); }
.sheet-dialog {
  width: min(540px, calc(100% - 28px));
  max-height: min(88vh, 820px);
  margin: auto;
  padding: 22px;
  overflow: auto;
  background: #fff;
  border: 0;
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.stats-dialog, .result-dialog { width: min(680px, calc(100% - 28px)); }
.dialog-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.dialog-heading h2 { margin: 0; font-size: 1.35rem; letter-spacing: -0.03em; }
.dialog-heading-actions { display: flex; align-items: center; gap: 5px; }
.dialog-form, .security-form { display: grid; gap: 14px; }
.dialog-help { margin: 0; color: var(--muted); font-size: 0.8rem; line-height: 1.6; }
.stats-total { margin: -8px 0 14px; color: var(--muted); font-size: 0.82rem; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden; background: var(--soft); border-radius: 12px; }
.stat-grid > div { padding: 14px 12px; border-right: 1px solid var(--line); text-align: center; }
.stat-grid > div:last-child { border-right: 0; }
.stat-grid span, .stat-grid strong { display: block; }
.stat-grid span { color: var(--muted); font-size: 0.76rem; }
.stat-grid strong { margin-top: 3px; font-size: 1.15rem; }
.wrong-stat strong { color: var(--wrong); }
.stats-caption { margin: 10px 0 24px; color: var(--muted); text-align: center; font-size: 0.82rem; }
.stats-updated-at { margin: -15px 0 0; color: var(--muted); text-align: center; font-size: 0.72rem; }
.overall-overview { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); }
.overview-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 12px; }
.overview-heading h3 { margin: 0; font-size: 1.08rem; }
.track-overview-list { display: grid; gap: 16px; }
.certification-overview-group { display: grid; gap: 8px; }
.certification-overview-group h4 { margin: 0; font-size: 0.84rem; }
.certification-overview-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.track-overview-card {
  display: grid;
  min-width: 0;
  gap: 13px;
  padding: 16px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 13px;
  text-align: left;
}
.track-overview-card:hover { border-color: #aebfda; background: #fbfcff; }
.track-overview-card.active { border-color: #9fb8e4; box-shadow: 0 0 0 2px var(--blue-soft); }
.track-overview-heading, .track-overview-progress > span, .track-overview-footer { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.track-overview-heading strong { font-size: 0.98rem; }
.track-overview-heading small, .track-overview-progress small, .track-overview-metrics small, .track-overview-footer { color: var(--muted); font-size: 0.74rem; }
.track-overview-progress b { font-size: 1.2rem; }
.track-overview-progress > i { display: block; height: 6px; margin-top: 7px; overflow: hidden; background: #e7ebf2; border-radius: 99px; }
.track-overview-progress > i em { display: block; height: 100%; background: var(--blue); border-radius: inherit; }
.track-overview-metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; }
.track-overview-metrics > span { display: block; min-width: 0; padding: 7px 5px; background: var(--soft); border-radius: 8px; text-align: center; }
.track-overview-metrics small, .track-overview-metrics b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.track-overview-metrics b { margin-top: 2px; font-size: 0.76rem; }
.track-overview-footer { justify-content: flex-end; color: var(--blue); font-weight: 800; }
.management-context { display: flex; align-items: flex-end; justify-content: space-between; gap: 14px; margin-top: 25px; padding-top: 20px; border-top: 1px solid var(--line); }
.management-context > div:first-child strong, .management-context > div:first-child span { display: block; }
.management-context > div:first-child strong { font-size: 0.9rem; }
.management-context > div:first-child span { margin-top: 2px; color: var(--muted); font-size: 0.74rem; }
.management-track-filter { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 5px; }
.management-track-filter button { min-height: 36px; padding: 6px 11px; color: var(--muted); background: var(--soft); border: 1px solid transparent; border-radius: 9px; font-size: 0.78rem; font-weight: 800; }
.management-track-filter button.active, .management-track-filter button[aria-selected="true"] { color: var(--blue); background: var(--blue-soft); border-color: #c2d1ed; }
.management-tabs {
  position: sticky;
  z-index: 2;
  top: -22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin: 18px -4px 0;
  padding: 8px 4px;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
}
.management-tabs button { min-height: 44px; color: var(--muted); background: transparent; border: 0; border-radius: 9px; font-size: 0.82rem; font-weight: 850; }
.management-tabs button.active, .management-tabs button[aria-selected="true"] { color: var(--blue); background: var(--blue-soft); }
.management-panel { padding-bottom: 4px; }
.today-plan-card { margin-top: 13px; padding: 18px; background: linear-gradient(145deg, #f6f9ff, #eef4ff); border: 1px solid #dce7fa; border-radius: 14px; }
.today-plan-card h3 { margin: 2px 0 5px; font-size: 1.2rem; }
.today-plan-card p { margin-top: 4px; }
.goal-progress { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; align-items: center; margin: 16px 0 13px; }
.goal-progress .progress-track { height: 7px; background: #dbe5f7; }
.goal-progress strong { min-width: 38px; color: var(--blue); font-size: 0.8rem; text-align: right; }
.management-action-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.management-action-grid button { min-width: 0; min-height: 64px; padding: 10px; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 10px; text-align: left; }
.management-action-grid button:not(:disabled):hover { border-color: #aebfda; background: #fafcff; }
.management-action-grid strong, .management-action-grid span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.management-action-grid strong { font-size: 0.82rem; }
.management-action-grid span { margin-top: 5px; color: var(--muted); font-size: 0.74rem; }
.secondary-summary { margin-top: 8px; }
.weak-area-list { display: grid; gap: 8px; }
.weak-area-card { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px; background: var(--soft); border-radius: 11px; }
.weak-area-card > div { min-width: 0; }
.weak-area-card strong, .weak-area-card span { display: block; }
.weak-area-card strong { font-size: 0.86rem; }
.weak-area-card span { margin-top: 3px; color: var(--muted); font-size: 0.75rem; }
.weak-area-card p { margin: 6px 0 0; color: var(--ink); font-size: 0.76rem; line-height: 1.55; }
.weak-area-card button { flex: 0 0 auto; }
.daily-activity-chart { display: grid; grid-template-columns: repeat(14, minmax(18px, 1fr)); gap: 5px; min-height: 130px; align-items: end; padding: 10px 2px 0; overflow: hidden; }
.activity-day { display: grid; grid-template-rows: 17px 84px 18px; min-width: 0; align-items: end; text-align: center; }
.activity-day span, .activity-day small { overflow: hidden; color: var(--muted); font-size: 0.64rem; }
.activity-day i { display: block; width: min(100%, 22px); min-height: 4px; margin: 0 auto; background: var(--blue); border-radius: 4px 4px 2px 2px; }
.definition-list { display: grid; gap: 8px; }
.definition-list > div { padding: 11px 12px; background: var(--soft); border-radius: 9px; }
.definition-list strong { font-size: 0.76rem; }
.definition-list p { margin: 3px 0 0; color: var(--muted); line-height: 1.55; }
.goal-settings .dialog-form { padding: 3px 0 1px; }
.explanation-understanding { margin-top: 16px; padding-top: 14px; border-top: 1px solid #dde4ee; }
.explanation-understanding > strong { display: block; margin-bottom: 8px; font-size: 0.8rem; }
.result-explanation-controls { margin-top: 10px; }
.stats-section { margin-top: 24px; }
.stats-section h3 { margin: 0 0 10px; font-size: 0.9rem; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.section-heading h3 { margin-bottom: 10px; }
.count-badge { padding: 3px 7px; color: var(--muted); background: var(--soft); border-radius: 99px; font-size: 0.73rem; font-weight: 800; }
.summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 8px; }
.summary-grid > div { min-width: 0; padding: 12px; background: var(--soft); border-radius: 10px; }
.summary-grid span, .summary-grid strong { display: block; }
.summary-grid span { color: var(--muted); font-size: 0.75rem; }
.summary-grid strong { margin-top: 3px; font-size: 1rem; }
.summary-empty { grid-column: 1 / -1; margin: 0; }
.part-stat-row, .history-row { padding: 12px 0; border-bottom: 1px solid var(--line); }
.part-stat-row > div, .history-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.part-stat-row strong, .part-stat-row span, .history-row strong, .history-row span { display: block; }
.part-stat-row strong, .history-row strong { font-size: 0.86rem; }
.part-stat-row span, .history-row span { color: var(--muted); font-size: 0.77rem; }
.part-stat-row .mini-track { margin-top: 7px; }
.history-action-row > div:first-child { min-width: 0; }
.row-actions { display: flex; flex: 0 0 auto; gap: 6px; }
.management-details { padding-top: 1px; }
.diagnostic-details, .issue-details { margin-top: 24px; }
.diagnostic-details > summary, .issue-details > summary { display: flex; min-height: 52px; align-items: center; justify-content: space-between; gap: 12px; }
.diagnostic-details > summary span, .issue-details > summary span { display: block; }
.diagnostic-details > summary small { color: var(--muted); font-size: 0.73rem; font-weight: 650; text-align: right; }
.diagnostic-details[open] > summary, .issue-details[open] > summary { color: var(--ink); }
.diagnostic-details .stats-section:first-of-type { margin-top: 14px; }
.management-details p { font-size: 0.8rem; }
.management-details input, .management-details .secondary-button, .stats-backup { margin-bottom: 10px; }
.stats-backup { width: 100%; }
.logout-button { width: 100%; min-height: 44px; margin-top: 16px; color: var(--wrong); background: #fff; border: 1px solid #edc4c8; border-radius: 10px; font-weight: 800; }
.inline-status { min-height: 1.2em; margin: 8px 0 0; color: var(--muted); font-size: 0.78rem; }
.inline-status.success { color: var(--correct); }
.inline-status.error, .form-error { color: var(--wrong); }
.form-error { margin: 12px 0 0; padding: 10px 12px; background: var(--wrong-soft); border-radius: 9px; font-size: 0.82rem; }
.result-score { display: flex; align-items: baseline; gap: 12px; margin: 18px 0 4px; }
.result-score strong { font-size: 2rem; }
.result-score span { color: var(--muted); }
.result-wrong-item { padding: 14px 0; border-bottom: 1px solid var(--line); }
.result-wrong-item strong { font-size: 0.88rem; }
.result-wrong-item p { margin: 6px 0 0; color: var(--muted); font-size: 0.8rem; }
.result-memory-tip { padding: 8px 10px; color: #765700 !important; background: #fff7d7; border-radius: 8px; }
.perfect-result { color: var(--correct); }
.result-reflection-section { margin: 22px 0 16px; padding-top: 1px; border-top: 1px solid var(--line); }
.result-reflection-section > summary { min-height: 48px; padding: 14px 0; cursor: pointer; font-size: 0.88rem; font-weight: 850; }
.result-reflection-list { display: grid; gap: 9px; margin-top: 12px; }
.result-reflection-card { padding: 14px; background: var(--soft); border-radius: 11px; }
.result-reflection-card > strong { display: block; font-size: 0.82rem; }
.result-reflection-card > p { display: -webkit-box; overflow: hidden; margin: 5px 0 12px; color: var(--muted); -webkit-box-orient: vertical; -webkit-line-clamp: 2; font-size: 0.75rem; line-height: 1.5; }
.reflection-mini-label { display: block; margin: 9px 0 5px; color: var(--muted); font-size: 0.68rem; font-weight: 800; }
.compact-chips button { min-height: 44px; padding: 6px 10px; font-size: 0.72rem; }
.result-reflection-save { width: 100%; margin-top: 11px; }
.map-tools { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 15px; }
.map-legend { display: flex; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: 0.68rem; }
.map-legend span { display: inline-flex; align-items: center; gap: 4px; }
.map-legend i { width: 9px; height: 9px; border: 1px solid var(--line); border-radius: 3px; }
.legend-current { border-color: var(--blue) !important; box-shadow: 0 0 0 2px var(--blue-soft); }
.legend-correct { background: var(--correct); border-color: var(--correct) !important; }
.legend-wrong { background: var(--wrong); border-color: var(--wrong) !important; }
.legend-saved { background: var(--blue); border-color: var(--blue) !important; }
.question-map { display: grid; grid-template-columns: repeat(auto-fill, minmax(42px, 1fr)); gap: 7px; }
.map-button { min-height: 42px; color: var(--muted); background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.map-button.answered { color: #fff; background: var(--correct); border-color: var(--correct); }
.map-button.wrong { color: #fff; background: var(--wrong); border-color: var(--wrong); }
.map-button.saved { color: #fff; background: var(--blue); border-color: var(--blue); }
.map-button.current { outline: 3px solid rgba(36, 92, 189, 0.3); outline-offset: 1px; }
.toast { position: fixed; z-index: 100; left: 50%; bottom: max(24px, env(safe-area-inset-bottom)); width: max-content; max-width: calc(100% - 32px); transform: translateX(-50%); padding: 11px 15px; color: #fff; background: rgba(24,32,51,0.94); border-radius: 10px; box-shadow: var(--shadow); font-size: 0.82rem; }

.search-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
.key-term-list { margin: 12px 0 4px; }
.search-results, .issue-list { display: grid; gap: 8px; margin-top: 12px; }
.search-result, .issue-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px; background: var(--soft); border-radius: 11px; }
.search-result > div, .issue-row > div { min-width: 0; }
.search-result strong, .issue-row strong { display: block; font-size: 0.82rem; }
.search-result p, .issue-row p { margin: 5px 0; color: var(--ink); font-size: 0.78rem; line-height: 1.55; }
.search-result span, .issue-row span { display: block; color: var(--muted); font-size: 0.68rem; }
.search-result .small-button, .issue-row .small-button { flex: 0 0 auto; min-height: 44px; }
.issue-row.resolved { opacity: 0.66; }

.login-body { display: grid; min-height: 100vh; place-items: center; padding: 24px; }
.login-card { margin: 0; }
.login-card h1 { margin: 4px 0 8px; font-size: 1.45rem; }
.login-form { display: grid; gap: 10px; margin-top: 22px; text-align: left; }
.login-form label { font-size: 0.8rem; font-weight: 800; }
.login-form .primary-button { margin-top: 4px; }

@media (max-width: 620px) {
  .app-shell { width: min(100% - 24px, 760px); padding-top: 20px; }
  .question-card { padding: 20px 16px; border-radius: 14px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid > div:nth-child(2) { border-right: 0; }
  .stat-grid > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 420px) {
  body { background: #fff; }
  .site-header { min-height: 54px; padding-top: 7px; padding-bottom: 7px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-button strong { font-size: 0.82rem; }
  .header-button { padding-right: 2px; }
  .app-shell { width: 100%; padding: 14px 14px 88px; }
  .hub-heading { margin: 28px 2px 20px; }
  .hub-heading h1 { font-size: 1.8rem; }
  .hub-resume-card { min-height: 86px; margin-bottom: 22px; padding: 16px; }
  .certification-list { grid-template-columns: 1fr; }
  .certification-card { padding: 19px 17px; }
  .dashboard-context { margin-top: 2px; }
  .exam-type-tab { min-height: 54px; }
  .dashboard-title { margin: 24px 1px 15px; }
  .dashboard-title h1 { font-size: 1.65rem; }
  .scope-button { min-height: 62px; }
  .primary-start { min-height: 78px; padding: 13px 14px; }
  .quick-grid { gap: 8px; }
  .quick-button { grid-template-columns: 34px minmax(0, 1fr); min-height: 64px; gap: 8px; padding: 9px 10px; }
  .quick-icon { width: 34px; height: 34px; }
  .quiz-toolbar { margin-bottom: 10px; }
  .question-card { padding: 17px 4px 8px; border: 0; }
  .question-meta { padding: 0 2px; }
  .question-stem { margin: 14px 2px 22px; font-size: 1.2rem; line-height: 1.74; }
  .option-button { grid-template-columns: 34px minmax(0, 1fr); min-height: 62px; padding: 11px 10px; }
  .choice-submit-panel:not(.hidden) { position: sticky; z-index: 9; bottom: 70px; margin: 14px -4px 0; padding: 11px 4px 4px; background: linear-gradient(rgba(255,255,255,0), #fff 24%); }
  .fill-answer-form { padding: 14px; }
  .fill-answer-row { grid-template-columns: 1fr; }
  .fill-answer-row .primary-button { width: 100%; }
  .explanation { padding: 17px 14px; }
  .management-tabs { top: -20px; }
  .certification-overview-cards { grid-template-columns: 1fr; }
  .management-context { align-items: flex-start; flex-direction: column; }
  .management-track-filter { width: 100%; justify-content: stretch; }
  .management-track-filter button { flex: 1 1 90px; }
  .today-plan-card { padding: 15px; }
  .management-action-grid { grid-template-columns: repeat(2, 1fr); }
  .weak-area-card { align-items: flex-start; }
  .daily-activity-chart { gap: 3px; }
  .activity-day { grid-template-rows: 17px 70px 18px; }
  .quiz-nav { margin: 10px -14px -88px; padding: 10px 14px max(12px, env(safe-area-inset-bottom)); background: rgba(255,255,255,0.96); border-top: 1px solid var(--line); backdrop-filter: blur(12px); }
  .sheet-dialog, .stats-dialog, .result-dialog {
    width: 100%;
    max-width: none;
    max-height: 88vh;
    margin: auto 0 0;
    padding: 20px 16px max(20px, env(safe-area-inset-bottom));
    border-radius: 20px 20px 0 0;
  }
  .question-map-dialog { max-height: 82vh; }
  .map-tools { align-items: flex-start; }
  .quiz.mock-mode .quiz-nav { grid-template-columns: repeat(3, 1fr); }
  .quiz.mock-mode .mock-submit-button { grid-column: 1 / -1; }
  .search-form { grid-template-columns: 1fr; }
  .search-result, .issue-row { align-items: flex-start; }
  .diagnostic-details > summary { align-items: flex-start; }
  .diagnostic-details > summary small { max-width: 55%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}