:root {
  color-scheme: light;
  --mk-bg: #f8fafc;
  --mk-panel: rgba(255, 255, 255, 0.96);
  --mk-panel-strong: #ffffff;
  --mk-ink: #0f172a;
  --mk-muted: #475569;
  --mk-border: rgba(203, 213, 225, 0.9);
  --mk-shadow: 0 20px 48px rgba(15, 23, 42, 0.08);
  --mk-red: #c6374b;
  --mk-gold: #c79e4c;
  --mk-purple: #ab3871;
  --mk-indigo: #434487;
  --mk-blue: #3b65b1;
  --mk-sky: #387da6;
  --mk-green: #638f5e;
  --mk-warm: #ce6045;
  --mk-max: 72rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100%;
  font-family: 'Noto Sans', 'Noto Sans KR', 'Segoe UI', Arial, sans-serif;
  color: var(--mk-ink);
  background:
    radial-gradient(circle at top left, rgba(198, 55, 75, 0.08), transparent 24rem),
    radial-gradient(circle at top right, rgba(59, 101, 177, 0.08), transparent 24rem),
    linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

img {
  max-width: 100%;
}

.mk-page {
  min-height: 100dvh;
}

.mk-shell {
  width: min(calc(100% - 2rem), var(--mk-max));
  margin: 0 auto;
}

.mk-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(226, 232, 240, 0.92);
}

.mk-topbar__inner {
  width: min(calc(100% - 2rem), var(--mk-max));
  margin: 0 auto;
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.mk-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.mk-brand__mark {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.95rem;
  display: grid;
  place-items: center;
  color: #ffffff;
  font-size: 1.05rem;
  background:
    linear-gradient(135deg, var(--mk-red), var(--mk-blue));
  box-shadow: 0 12px 24px rgba(59, 101, 177, 0.22);
}

.mk-brand__text {
  display: grid;
  gap: 0.05rem;
}

.mk-brand__eyebrow {
  color: var(--mk-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mk-brand__name {
  font-size: 1rem;
}

.mk-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 0.7rem;
}

.mk-nav__link,
.mk-mini-link {
  color: var(--mk-muted);
  font-weight: 600;
}

.mk-nav__link:hover,
.mk-mini-link:hover {
  color: var(--mk-ink);
}

.mk-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.2rem;
  border-radius: 0.95rem;
  border: 1px solid transparent;
  font-size: 0.98rem;
  font-weight: 800;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.mk-button:hover {
  transform: translateY(-1px);
}

.mk-button--primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--mk-red), #b83144);
  box-shadow: 0 14px 26px rgba(198, 55, 75, 0.24);
}

.mk-button--secondary {
  color: var(--mk-blue);
  background: rgba(59, 101, 177, 0.08);
  border-color: rgba(59, 101, 177, 0.14);
}

.mk-button--ghost {
  color: var(--mk-ink);
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(203, 213, 225, 0.95);
}

.mk-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding-top: 1.5rem;
  color: #64748b;
  font-size: 0.88rem;
  font-weight: 700;
}

.mk-breadcrumbs span {
  opacity: 0.75;
}

.mk-hero {
  padding: 2rem 0 1.2rem;
}

.mk-hero__grid,
.mk-section__grid,
.mk-cta,
.mk-builder,
.mk-dialogue,
.mk-character-grid,
.mk-lesson-grid,
.mk-stage-grid,
.mk-guide-grid,
.mk-card-grid,
.mk-faq-grid,
.mk-comparison,
.mk-example-grid,
.mk-mini-grid,
.mk-method-grid {
  display: grid;
  gap: 1rem;
}

.mk-hero__grid {
  align-items: stretch;
}

.mk-card,
.mk-hero-card,
.mk-preview-card,
.mk-builder-shell,
.mk-dialogue-shell,
.mk-faq-card,
.mk-footer,
.mk-word-card,
.mk-stage-card,
.mk-guide-card,
.mk-lesson-card,
.mk-stat-card,
.mk-mini-card,
.mk-cta,
.mk-surface {
  border: 1px solid var(--mk-border);
  border-radius: 1.5rem;
  background:
    radial-gradient(circle at top right, rgba(59, 101, 177, 0.08), transparent 18rem),
    linear-gradient(180deg, var(--mk-panel-strong), var(--mk-panel));
  box-shadow: var(--mk-shadow);
}

.mk-hero-card,
.mk-preview-card,
.mk-card,
.mk-builder-shell,
.mk-dialogue-shell,
.mk-faq-card,
.mk-footer,
.mk-word-card,
.mk-stage-card,
.mk-guide-card,
.mk-lesson-card,
.mk-stat-card,
.mk-mini-card,
.mk-cta,
.mk-surface {
  padding: 1.25rem;
}

.mk-kicker,
.mk-pill,
.mk-label,
.mk-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 1.8rem;
  width: fit-content;
  padding: 0 0.7rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mk-kicker,
.mk-pill {
  color: #475569;
  background: rgba(15, 23, 42, 0.06);
}

.mk-badge {
  color: var(--mk-blue);
  background: rgba(59, 101, 177, 0.12);
}

.mk-label {
  color: var(--mk-red);
  background: rgba(198, 55, 75, 0.12);
}

.mk-title {
  margin: 1rem 0 0;
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
}

.mk-title .mk-accent {
  color: var(--mk-blue);
}

.mk-lede,
.mk-body,
.mk-card p,
.mk-lesson-card p,
.mk-guide-card p,
.mk-faq-card p,
.mk-stage-card p,
.mk-word-card p,
.mk-mini-card p,
.mk-preview-card p,
.mk-footer p,
.mk-hero-card p {
  color: var(--mk-muted);
  line-height: 1.75;
}

.mk-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.mk-inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1rem;
}

.mk-meta-row,
.mk-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.mk-tag {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0 0.75rem;
  border-radius: 999px;
  background: rgba(241, 245, 249, 0.96);
  color: #334155;
  font-size: 0.85rem;
  font-weight: 700;
}

.mk-hero-card .mk-tag-row {
  margin-top: 1rem;
}

.mk-section {
  padding: 1rem 0 0;
}

.mk-section__title {
  margin: 0 0 0.65rem;
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  line-height: 1.1;
}

.mk-section__eyebrow {
  margin-bottom: 0.7rem;
}

.mk-card-grid--2,
.mk-hero__grid,
.mk-guide-grid,
.mk-mini-grid,
.mk-example-grid,
.mk-comparison,
.mk-method-grid {
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.mk-card-grid--3,
.mk-stage-grid,
.mk-lesson-grid,
.mk-faq-grid,
.mk-character-grid {
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}

.mk-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 0.85rem;
  margin-top: 1rem;
}

.mk-stat-card strong {
  display: block;
  font-size: 1.55rem;
  line-height: 1;
}

.mk-stat-card span {
  display: block;
  margin-top: 0.35rem;
  color: var(--mk-muted);
  line-height: 1.6;
}

.mk-stage-card,
.mk-guide-card,
.mk-lesson-card,
.mk-word-card,
.mk-mini-card {
  position: relative;
}

.mk-stage-card::before,
.mk-guide-card::before,
.mk-lesson-card::before,
.mk-mini-card::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: 0.35rem;
  border-radius: 1.5rem 0 0 1.5rem;
  background: var(--mk-accent, var(--mk-blue));
}

.mk-stage-card h3,
.mk-guide-card h3,
.mk-lesson-card h3,
.mk-word-card h3,
.mk-mini-card h3,
.mk-faq-card h3 {
  margin: 0.7rem 0 0;
  font-size: 1.15rem;
}

.mk-stage-topline,
.mk-guide-topline,
.mk-lesson-topline,
.mk-card-topline,
.mk-builder-topline,
.mk-dialogue-topline {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.65rem;
}

.mk-stage-status {
  color: #64748b;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.mk-sentence {
  margin: 0.9rem 0 0;
  font-size: clamp(1.6rem, 4vw, 2.45rem);
  font-weight: 900;
  line-height: 1.2;
}

.mk-sentence--compact {
  font-size: 1.3rem;
}

.mk-translation,
.mk-note,
.mk-example-translation,
.mk-small {
  color: #64748b;
  line-height: 1.7;
}

.mk-small {
  font-size: 0.9rem;
}

.mk-preview-card__screen,
.mk-builder-stage,
.mk-builder-answer,
.mk-builder-bank,
.mk-dialogue-lines,
.mk-dialogue-question,
.mk-example-box,
.mk-callout,
.mk-block,
.mk-word-sample {
  border: 1px solid rgba(226, 232, 240, 0.95);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.92);
}

.mk-preview-card__screen,
.mk-builder-stage,
.mk-builder-answer,
.mk-builder-bank,
.mk-dialogue-question,
.mk-example-box,
.mk-callout,
.mk-block,
.mk-word-sample {
  padding: 1rem;
}

.mk-preview-card__screen {
  display: grid;
  gap: 0.85rem;
}

.mk-preview-card__screen-bar {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  color: #64748b;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mk-token--noun {
  color: var(--mk-gold);
}

.mk-token--verb {
  color: var(--mk-warm);
}

.mk-token--adjective {
  color: var(--mk-red);
}

.mk-token--particle {
  color: var(--mk-purple);
}

.mk-token--adverb {
  color: var(--mk-indigo);
}

.mk-token--connector {
  color: var(--mk-blue);
}

.mk-token--ending {
  color: var(--mk-sky);
}

.mk-token--pronoun {
  color: var(--mk-green);
}

.mk-token-chip {
  display: inline-flex;
  align-items: center;
  min-height: 2.6rem;
  padding: 0 0.8rem;
  border-radius: 0.85rem;
  background: #f8fafc;
  color: #1e293b;
  font-weight: 800;
}

.mk-builder-shell,
.mk-dialogue-shell {
  display: grid;
  gap: 0.9rem;
}

.mk-builder-stage {
  text-align: center;
}

.mk-builder-stage h3,
.mk-dialogue-intro h3 {
  margin: 0;
}

.mk-builder-stage .mk-sentence {
  margin-top: 0.25rem;
}

.mk-builder-answer,
.mk-builder-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.mk-builder-focus {
  padding: 0.85rem 1rem;
  border-radius: 1rem;
  background: rgba(59, 101, 177, 0.09);
  border: 1px solid rgba(59, 101, 177, 0.16);
}

.mk-dialogue-lines {
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
}

.mk-dialogue-line {
  padding: 0.95rem;
  border-radius: 1rem;
  border: 1px solid rgba(226, 232, 240, 0.95);
  background: rgba(248, 250, 252, 0.96);
}

.mk-dialogue-line.is-highlighted {
  border-color: rgba(59, 101, 177, 0.28);
  background: rgba(59, 101, 177, 0.07);
}

.mk-dialogue-speaker {
  margin: 0;
  color: #64748b;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mk-dialogue-utterance {
  margin: 0.4rem 0 0;
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1.65;
}

.mk-dialogue-translation {
  margin: 0.35rem 0 0;
  color: #64748b;
}

.mk-dialogue-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.mk-dialogue-option {
  display: inline-flex;
  align-items: center;
  min-height: 2.7rem;
  padding: 0 0.95rem;
  border-radius: 0.9rem;
  border: 1px solid rgba(203, 213, 225, 0.95);
  background: rgba(255, 255, 255, 0.94);
  color: #334155;
  font-weight: 700;
}

.mk-dialogue-option--correct {
  border-color: rgba(99, 143, 94, 0.34);
  background: rgba(99, 143, 94, 0.12);
}

.mk-character-card {
  border: 1px solid rgba(226, 232, 240, 0.95);
  border-radius: 1.2rem;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 14px 26px rgba(15, 23, 42, 0.06);
  padding: 1rem;
}

.mk-character-top {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.8rem;
  align-items: center;
}

.mk-character-mark {
  width: 3rem;
  height: 3rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--mk-accent, var(--mk-blue));
  background: rgba(59, 101, 177, 0.1);
}

.mk-character-card h3 {
  margin: 0;
}

.mk-character-romanization {
  margin: 0.2rem 0 0;
  color: var(--mk-accent, var(--mk-blue));
  font-size: 0.92rem;
  font-weight: 800;
}

.mk-word-sample {
  display: grid;
  gap: 0.2rem;
  margin-top: 0.9rem;
}

.mk-word-sample strong {
  font-size: 1.05rem;
}

.mk-block {
  text-align: center;
}

.mk-block p {
  margin: 0.6rem 0 0;
  color: var(--mk-ink);
  font-weight: 800;
}

.mk-cta {
  align-items: center;
}

.mk-cta__copy h2 {
  margin: 0.6rem 0 0;
  font-size: clamp(1.7rem, 3vw, 2.45rem);
}

.mk-footer {
  margin: 1.2rem auto 2.25rem;
}

.mk-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1rem;
}

.mk-faq-card h3 {
  font-size: 1.05rem;
}

.mk-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: 1.1rem;
  overflow: hidden;
  border: 1px solid rgba(226, 232, 240, 0.95);
}

.mk-table th,
.mk-table td {
  padding: 0.9rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(226, 232, 240, 0.95);
}

.mk-table th {
  background: rgba(248, 250, 252, 0.96);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #475569;
}

.mk-table tr:last-child td {
  border-bottom: none;
}

.mk-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;
}

@media (max-width: 860px) {
  .mk-topbar__inner {
    align-items: flex-start;
    padding: 0.85rem 0;
    flex-direction: column;
  }

  .mk-nav {
    justify-content: flex-start;
  }
}

@media (min-width: 900px) {
  .mk-hero {
    padding-top: 2.3rem;
  }

  .mk-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
  }

  .mk-cta {
    grid-template-columns: minmax(0, 1.2fr) auto;
  }
}