:root {
  --bg: #efe5d4;
  --bg-deep: #f8f2e8;
  --panel: rgba(255, 252, 246, 0.92);
  --panel-strong: #fffdfa;
  --ink: #1f2a39;
  --muted: #5f6d7d;
  --accent: #0f766e;
  --accent-strong: #0c5a54;
  --accent-soft: rgba(15, 118, 110, 0.08);
  --warm: #f07f4f;
  --warm-strong: #dd6432;
  --line: rgba(31, 42, 57, 0.1);
  --shadow: 0 22px 60px rgba(60, 38, 12, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "DM Sans", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(240, 127, 79, 0.22), transparent 30%),
    radial-gradient(circle at top right, rgba(15, 118, 110, 0.14), transparent 30%),
    linear-gradient(180deg, #f6ecde 0%, #e9decb 100%);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: "Bricolage Grotesque", sans-serif;
  line-height: 1.04;
}

p {
  margin: 0;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-bridge {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(27, 35, 48, 0.84);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-bridge__inner {
  max-width: 1220px;
  margin: 0 auto;
  padding: 1rem 1.4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.site-bridge__brand,
.site-bridge__links a {
  color: #f2f7fb;
  text-decoration: none;
  font-weight: 700;
}

.site-bridge__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-bridge__links a {
  opacity: 0.9;
}

.site-bridge__links a:hover,
.site-bridge__links a:focus {
  opacity: 1;
}

.page-shell {
  max-width: 1220px;
  margin: 0 auto;
  padding: 1.5rem 1.4rem 3rem;
}

.hero,
.panel,
.summary-card,
.content-card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 1.1rem;
  padding: clamp(1.3rem, 3vw, 2.6rem);
  background:
    radial-gradient(circle at 85% 12%, rgba(15, 118, 110, 0.15), transparent 32%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0)),
    var(--panel);
}

.hero h1 {
  font-size: clamp(2.7rem, 5.8vw, 5rem);
  max-width: 11ch;
}

.hero-lead,
.section-copy,
.card-copy,
.panel-note,
.reading-copy,
.feedback-box,
.status-line {
  color: var(--muted);
  line-height: 1.72;
}

.hero-lead {
  margin-top: 1rem;
  max-width: 48rem;
  font-size: clamp(1.04rem, 1.9vw, 1.2rem);
}

.eyebrow {
  display: inline-block;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.eyebrow-small {
  margin-bottom: 0.4rem;
}

.hero-actions,
.hero-pills,
.badge-list,
.lesson-meta,
.content-head,
.stack-list,
.roadmap,
.summary-grid,
.workspace,
.study-grid,
.speaking-grid,
.quiz-list {
  display: grid;
  gap: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  margin-top: 1.2rem;
}

.hero-pills span,
.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.45rem 0.82rem;
  font-size: 0.88rem;
  font-weight: 700;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(15, 118, 110, 0.14);
}

.pill.muted {
  background: rgba(31, 42, 57, 0.05);
  color: var(--muted);
  border-color: rgba(31, 42, 57, 0.08);
}

.hero-panel {
  padding: 1.15rem;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.4));
  border: 1px solid rgba(31, 42, 57, 0.08);
}

.profile-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.45rem;
}

input[type="text"],
select {
  width: 100%;
  border: 1px solid rgba(31, 42, 57, 0.14);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  padding: 0.88rem 1rem;
}

select {
  appearance: none;
}

.panel-note {
  margin-top: 1rem;
  font-size: 0.94rem;
}

.primary-button,
.secondary-button,
.ghost-button,
.audio-button {
  border-radius: 999px;
  border: 1px solid transparent;
  min-height: 46px;
  padding: 0.78rem 1.15rem;
  font-weight: 800;
  transition: transform 120ms ease, background 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
}

.primary-button {
  color: #fff;
  background: linear-gradient(135deg, var(--warm) 0%, #f59b5b 100%);
  box-shadow: 0 14px 24px rgba(240, 127, 79, 0.24);
}

.primary-button:hover,
.primary-button:focus {
  transform: translateY(-1px);
  background: linear-gradient(135deg, var(--warm-strong) 0%, #ef8e52 100%);
}

.secondary-button,
.ghost-button,
.audio-button {
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  border-color: rgba(31, 42, 57, 0.12);
}

.secondary-button:hover,
.secondary-button:focus,
.ghost-button:hover,
.ghost-button:focus,
.audio-button:hover,
.audio-button:focus {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 1);
}

.summary-grid {
  margin-top: 1.2rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.starter-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(250px, 0.65fr);
  gap: 1rem;
  margin-top: 1.2rem;
}

.starter-panel,
.starter-side {
  display: grid;
  gap: 1rem;
}

.starter-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
}

.starter-grid-inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.starter-card {
  padding: 1rem;
  border-radius: 22px;
  border: 1px solid rgba(31, 42, 57, 0.08);
  background: rgba(255, 255, 255, 0.74);
}

.starter-card h3 {
  margin-top: 0.5rem;
  font-size: clamp(1.35rem, 2.4vw, 2rem);
}

.starter-side {
  align-content: start;
}

.starter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.chunk-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.9rem;
}

.chunk-chip {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0.5rem 0.8rem;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.08);
  border: 1px solid rgba(15, 118, 110, 0.12);
  color: var(--accent-strong);
  font-weight: 700;
}

.starter-steps {
  display: grid;
  gap: 0.85rem;
}

.starter-step {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 0.8rem;
  align-items: start;
  padding: 0.85rem 0.9rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(31, 42, 57, 0.07);
}

.starter-step-index {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(240, 127, 79, 0.18), rgba(15, 118, 110, 0.14));
  font-weight: 800;
  color: var(--accent-strong);
}

.toggle-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.75rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(31, 42, 57, 0.12);
  background: rgba(255, 255, 255, 0.8);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
}

.toggle-chip input {
  width: 18px;
  height: 18px;
}

.summary-card {
  padding: 1.2rem;
}

.card-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 800;
  color: var(--accent);
}

.summary-card h2 {
  margin-top: 0.5rem;
  font-size: 1.7rem;
}

.badge-list {
  margin-top: 0.85rem;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
}

.badge-chip {
  padding: 0.75rem 0.85rem;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.1), rgba(240, 127, 79, 0.1));
  border: 1px solid rgba(31, 42, 57, 0.08);
  font-size: 0.92rem;
  font-weight: 700;
}

.workspace {
  margin-top: 1.2rem;
  grid-template-columns: minmax(250px, 310px) minmax(0, 1fr);
  align-items: start;
}

.panel {
  padding: 1.15rem;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
}

.sidebar {
  position: sticky;
  top: 5.6rem;
}

.roadmap {
  margin-top: 1rem;
}

#roadmap-note {
  margin-top: 0.55rem;
  max-width: 24rem;
}

.roadmap-group {
  border: 1px solid rgba(31, 42, 57, 0.08);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.55);
  padding: 0.9rem;
}

.roadmap-group h3 {
  font-size: 1.2rem;
}

.roadmap-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.lesson-list {
  display: grid;
  gap: 0.7rem;
  margin-top: 0.9rem;
}

.lesson-list button {
  width: 100%;
  text-align: left;
  border-radius: 18px;
  border: 1px solid rgba(31, 42, 57, 0.08);
  background: rgba(255, 255, 255, 0.92);
  padding: 0.9rem 1rem;
  color: var(--ink);
}

.lesson-list button:hover,
.lesson-list button:focus {
  border-color: rgba(15, 118, 110, 0.26);
  box-shadow: 0 10px 26px rgba(31, 42, 57, 0.08);
}

.lesson-list button.is-active {
  border-color: rgba(15, 118, 110, 0.3);
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.08), rgba(255, 255, 255, 0.95));
}

.lesson-list button.is-locked {
  opacity: 0.55;
}

.lesson-title-line {
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
  align-items: center;
}

.lesson-title-line strong {
  font-size: 1rem;
}

.lesson-shell {
  display: grid;
  gap: 1rem;
}

.lesson-header h2 {
  font-size: clamp(2rem, 3.6vw, 3rem);
}

.lesson-meta {
  display: flex;
  flex-wrap: wrap;
}

.phrase-banner {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border-radius: 24px;
  background:
    radial-gradient(circle at right top, rgba(15, 118, 110, 0.14), transparent 36%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.4));
  border: 1px solid rgba(31, 42, 57, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.phrase-banner h3 {
  margin-top: 0.45rem;
  font-size: clamp(1.35rem, 2.4vw, 2rem);
}

.study-grid {
  margin-top: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.content-card {
  padding: 1rem;
}

.content-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.stack-list {
  margin-top: 0.95rem;
}

.stack-item,
.quiz-item,
.kanji-item {
  padding: 1rem;
  border-radius: 20px;
  border: 1px solid rgba(31, 42, 57, 0.07);
  background: rgba(255, 255, 255, 0.78);
}

.stack-item small,
.quiz-item small,
.lesson-subcopy {
  display: block;
  margin-top: 0.45rem;
  color: var(--muted);
  line-height: 1.55;
}

.mini-row {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: start;
}

.kanji-item {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 0.95rem;
  align-items: start;
}

.kanji-mark {
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(240, 127, 79, 0.14), rgba(15, 118, 110, 0.12));
  font-size: 2rem;
  font-family: "Bricolage Grotesque", sans-serif;
}

.reading-copy {
  margin-top: 0.85rem;
  padding: 1rem;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.74);
}

.speaking-grid {
  grid-template-columns: minmax(0, 1fr) 220px;
  align-items: end;
  margin-top: 1rem;
}

.typed-action-wrap {
  display: flex;
}

.typed-action-wrap button {
  width: 100%;
}

.status-line {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 18px;
  background: rgba(15, 118, 110, 0.07);
  border: 1px solid rgba(15, 118, 110, 0.12);
}

.feedback-box {
  margin-top: 0.9rem;
  padding: 1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(31, 42, 57, 0.08);
}

.quiz-list {
  margin-top: 1rem;
}

.quiz-item h3 {
  font-size: 1.15rem;
}

.quiz-options {
  display: grid;
  gap: 0.7rem;
  margin-top: 0.9rem;
}

.quiz-option {
  display: flex;
  gap: 0.75rem;
  align-items: start;
  padding: 0.8rem 0.95rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(31, 42, 57, 0.06);
}

.quiz-option input {
  margin-top: 0.16rem;
}

.empty-state {
  padding: 1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.66);
  border: 1px dashed rgba(31, 42, 57, 0.12);
  color: var(--muted);
}

@media (max-width: 1060px) {
  .hero,
  .workspace,
  .starter-grid,
  .starter-grid-inner,
  .study-grid,
  .summary-grid,
  .speaking-grid {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}

@media (max-width: 720px) {
  .page-shell,
  .site-bridge__inner {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .site-bridge__inner {
    align-items: start;
    flex-direction: column;
  }

  .hero h1 {
    font-size: clamp(2.3rem, 10vw, 3.4rem);
  }

  .phrase-banner,
  .panel-header,
  .starter-head,
  .mini-row,
  .content-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .kanji-item {
    grid-template-columns: 1fr;
  }

  .starter-actions {
    display: grid;
  }
}