:root {
  --bg: #f7efe2;
  --bg-strong: #e8d2b1;
  --ink: #1f2a33;
  --ink-soft: #4f5a62;
  --line: rgba(31, 42, 51, 0.14);
  --panel: rgba(255, 251, 245, 0.92);
  --accent: #d94f30;
  --accent-deep: #a93a21;
  --teal: #0b7f83;
  --gold: #cb9d3d;
  --shadow: 0 20px 50px rgba(60, 40, 10, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Noto Sans TC", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(217, 79, 48, 0.18), transparent 28%),
    radial-gradient(circle at bottom right, rgba(11, 127, 131, 0.18), transparent 24%),
    linear-gradient(180deg, #fff7ec 0%, var(--bg) 50%, #f3e5cd 100%);
}

button,
input,
select {
  font: inherit;
}

.app-shell {
  width: min(100%, 1200px);
  margin: 0 auto;
  padding: 18px 14px 48px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  margin-bottom: 18px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 999px;
  background: rgba(255, 248, 240, 0.86);
  backdrop-filter: blur(14px);
  box-shadow: 0 16px 28px rgba(78, 54, 19, 0.08);
}

.brand-button,
.topnav button,
.btn,
.mini-btn {
  border: 0;
  cursor: pointer;
}

.brand-button {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--ink);
  background: transparent;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.content-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.content-tools-panel {
  border-radius: 20px;
  background: rgba(31, 42, 51, 0.03);
  opacity: 0.62;
  transition: opacity 120ms ease, background 120ms ease;
}

.content-tools-panel:hover,
.content-tools-panel[open] {
  opacity: 1;
  background: rgba(31, 42, 51, 0.05);
}

.content-tools-toggle {
  cursor: pointer;
  padding: 8px 10px;
  list-style: none;
  color: var(--ink-soft);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.content-tools-toggle::-webkit-details-marker {
  display: none;
}

.content-tools-panel[open] .content-tools {
  padding: 0 10px 10px;
}

.content-tools__group {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(31, 42, 51, 0.05);
  color: var(--ink-soft);
}

.content-tools__group span {
  font-size: 0.84rem;
  font-weight: 700;
}

.content-tools__group select {
  border: 0;
  background: transparent;
  color: var(--ink);
  min-width: 96px;
}

.content-tools__group select:focus {
  outline: none;
}

.topnav button {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--ink-soft);
  background: transparent;
}

.topnav__secondary {
  opacity: 0.72;
}

.topnav button:hover,
.topnav button.is-active {
  color: var(--ink);
  background: rgba(31, 42, 51, 0.08);
}

.page-root {
  display: grid;
  gap: 18px;
}

.panel,
.hero,
.lesson-stage,
.scenario-card,
.stack-card,
.faq-card,
.review-card,
.account-card {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero {
  overflow: hidden;
  padding: 24px;
}

.hero__wrap {
  display: grid;
  gap: 20px;
}

.hero__visual {
  display: grid;
  gap: 12px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(217, 79, 48, 0.95), rgba(203, 157, 61, 0.95));
  color: #fff8f3;
}

.hero__support {
  display: grid;
  gap: 10px;
}

.hero__micro-flow {
  display: grid;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 22px;
  background: rgba(255, 248, 243, 0.14);
}

.hero__micro-flow-title {
  margin: 0;
  color: #fff8f3;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero__micro-flow-steps {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.hero__micro-step {
  flex: 1 1 0;
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  color: #fff8f3;
}

.hero__micro-flow-steps .hero__micro-step + .hero__micro-step {
  border-left: 1px solid rgba(255, 248, 243, 0.18);
}

.hero__micro-step strong,
.hero__micro-step span,
.hero__micro-step small {
  display: block;
  margin: 0;
}

.hero__micro-step strong {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  opacity: 0.82;
}

.hero__micro-step span {
  font-size: 0.98rem;
  font-weight: 700;
}

.hero__micro-step small {
  font-size: 0.76rem;
  line-height: 1.4;
  opacity: 0.84;
}

.hero__support-card {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 248, 243, 0.82);
  color: var(--ink);
}

.hero__support-card h3,
.hero__support-card p {
  margin: 0;
}

.hero__support-card p {
  margin-top: 6px;
  color: var(--ink-soft);
  line-height: 1.6;
}

.stamp {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 248, 243, 0.16);
  font-size: 0.84rem;
  letter-spacing: 0.04em;
}

.hero h1,
.section-title,
.lesson-stage h2,
.scenario-card h3,
.subscenario-card h3,
.stack-card h3,
.review-card h3,
.account-card h3 {
  margin: 0;
}

.hero h1 {
  font-size: clamp(2rem, 7vw, 3.8rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  font-family: "Space Grotesk", sans-serif;
}

.hero p,
.stack-card p,
.subscenario-card p,
.review-card p,
.account-card p,
.field-hint,
.scenario-copy,
.body-copy {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.7;
}

.hero__metrics,
.proof-grid,
.scenario-grid,
.subscenario-grid,
.stack-grid,
.day-highlight-grid,
.phrase-detail-grid,
.practice-step-grid,
.review-grid,
.account-grid,
.quick-phrases,
.lesson-steps,
.practice-grid,
.faq-grid {
  display: grid;
  gap: 14px;
}

.hero__metric,
.proof-card,
.quick-phrase,
.phrase-detail-card,
.highlight-card,
.practice-step-card,
.lesson-step,
.feedback-card,
.stat-card {
  padding: 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
}

.section {
  display: grid;
  gap: 14px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 12px;
}

.section-title {
  font-size: 1.4rem;
  line-height: 1.2;
}

.section-lead {
  margin: 4px 0 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.cta-row,
.scenario-actions,
.action-row,
.subnav,
.learning-pref-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.learning-pref-summary {
  align-items: center;
}

.content-tools .status-pill,
.learning-pref-summary .status-pill {
  margin: 0;
}

.stack-card--quiet {
  background: rgba(255, 255, 255, 0.64);
}

.focus-note {
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  border: 1px dashed rgba(31, 42, 51, 0.14);
  background: rgba(255, 255, 255, 0.56);
}

.focus-note p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.focus-note strong {
  color: var(--ink);
}

.btn,
.mini-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  transition: transform 120ms ease, background 120ms ease;
}

.btn:hover,
.mini-btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  color: #fff;
  background: var(--accent);
}

.btn--primary:hover {
  background: var(--accent-deep);
}

.btn--secondary {
  color: var(--ink);
  background: rgba(31, 42, 51, 0.08);
}

.mini-btn {
  min-height: 40px;
  padding: 0 14px;
  color: var(--ink);
  background: rgba(11, 127, 131, 0.08);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(203, 157, 61, 0.18);
  color: #7a5b0f;
  font-size: 0.8rem;
  font-weight: 700;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.chip-row li {
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(31, 42, 51, 0.06);
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.scenario-card {
  padding: 18px;
}

.scenario-card--launcher {
  display: grid;
  gap: 14px;
}

.scenario-card__header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 12px;
}

.scenario-card__meta {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.scenario-card__hint {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.scenario-card__action-note {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.module-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.module-pill {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  min-width: 150px;
  padding: 12px 14px;
  border: 0;
  border-radius: 20px;
  background: rgba(31, 42, 51, 0.06);
  color: var(--ink);
  cursor: pointer;
}

.module-pill small {
  color: var(--ink-soft);
}

.module-pill.is-active {
  background: rgba(217, 79, 48, 0.14);
  box-shadow: inset 0 0 0 1px rgba(217, 79, 48, 0.22);
}

.subscenario-card {
  padding: 18px;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.detail-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.detail-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(31, 42, 51, 0.12);
}

.detail-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.detail-list strong,
.detail-list span {
  font-size: 0.92rem;
}

.detail-list span {
  color: var(--ink-soft);
  text-align: right;
}

.day-highlight-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.highlight-card {
  min-height: 100%;
}

.highlight-card h3,
.phrase-detail-card h3,
.practice-step-card h3 {
  margin: 0;
  line-height: 1.45;
}

.phrase-detail-card,
.practice-step-card {
  display: grid;
  gap: 10px;
}

.phrase-head,
.dialogue-line__top {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.phrase-head h3,
.phrase-head h4,
.dialogue-line__top strong,
.dialogue-line__top p {
  margin: 0;
}

.phrase-detail-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.phrase-romaji {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink);
}

.phrase-kana {
  margin: 0;
  font-size: 0.98rem;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

.phrase-usage {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.phrase-meaning strong,
.field-hint strong {
  color: var(--ink);
}

.practice-step-grid {
  display: grid;
  gap: 12px;
}

.stack-card,
.review-card,
.account-card,
.lesson-stage {
  padding: 20px;
}

.lesson-stage {
  display: grid;
  gap: 16px;
}

.dialogue-card {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(11, 127, 131, 0.1), rgba(255, 255, 255, 0.86));
  border: 1px solid rgba(11, 127, 131, 0.16);
}

.dialogue-line {
  display: grid;
  gap: 4px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(31, 42, 51, 0.12);
}

.dialogue-line:last-child {
  border-bottom: 0;
}

.dialogue-line strong {
  font-size: 0.88rem;
  color: var(--teal);
}

.dialogue-line__top strong {
  display: block;
}

.dialogue-line span {
  font-size: 1.04rem;
  font-weight: 700;
}

.dialogue-line small {
  color: var(--ink-soft);
}

.dialogue-kana {
  letter-spacing: 0.04em;
}

.quick-phrase h4,
.lesson-step h4,
.feedback-card h4,
.stat-card h4 {
  margin: 0 0 8px;
}

.quick-phrase p,
.lesson-step p,
.feedback-card p,
.stat-card p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.speak-btn {
  flex: 0 0 auto;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid rgba(11, 127, 131, 0.18);
  border-radius: 999px;
  background: rgba(11, 127, 131, 0.1);
  color: var(--teal);
  font-size: 0.84rem;
  font-weight: 700;
}

.speak-btn:hover {
  background: rgba(11, 127, 131, 0.18);
}

.speak-btn.is-playing {
  border-color: rgba(217, 79, 48, 0.22);
  background: rgba(217, 79, 48, 0.12);
  color: var(--accent-deep);
}

.speak-btn:disabled {
  cursor: not-allowed;
  opacity: 0.56;
}

.speak-btn--inline {
  min-height: 32px;
  padding: 0 10px;
  font-size: 0.8rem;
}

.field-hint {
  font-size: 0.92rem;
}

.stack-card select,
.account-card select {
  width: 100%;
  min-height: 46px;
  margin-top: 8px;
  padding: 0 14px;
  border: 1px solid rgba(31, 42, 51, 0.14);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--ink);
}

.stack-card select:focus,
.account-card select:focus {
  outline: 2px solid rgba(11, 127, 131, 0.18);
  border-color: rgba(11, 127, 131, 0.3);
}

.audio-chip,
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(217, 79, 48, 0.1);
  color: var(--accent-deep);
  font-size: 0.84rem;
  font-weight: 700;
}

.status-pill[data-state="ready"] {
  background: rgba(11, 127, 131, 0.12);
  color: var(--teal);
}

.status-pill[data-state="warn"] {
  background: rgba(203, 157, 61, 0.18);
  color: #8b6512;
}

.recorder-box {
  display: grid;
  gap: 12px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(31, 42, 51, 0.04);
  border: 1px dashed rgba(31, 42, 51, 0.18);
}

.feedback-card strong {
  color: var(--ink);
}

.price-block {
  display: grid;
  gap: 4px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(31, 42, 51, 0.96), rgba(11, 127, 131, 0.92));
  color: #f6f8fb;
}

.price-block b {
  font-size: 2rem;
  line-height: 1;
}

.pack-teaser {
  display: grid;
  gap: 10px;
  padding: 18px 20px;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(31, 42, 51, 0.08);
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.pack-teaser h3,
.pack-teaser p {
  margin: 0;
}

.pack-teaser p {
  color: var(--ink-soft);
  line-height: 1.6;
}

.bottom-nav {
  position: sticky;
  bottom: 12px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 10px;
  border-radius: 24px;
  background: rgba(255, 248, 240, 0.92);
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 28px rgba(72, 46, 10, 0.12);
}

.bottom-nav button {
  min-height: 46px;
  border: 0;
  border-radius: 18px;
  background: transparent;
  color: var(--ink-soft);
}

.bottom-nav button.is-active {
  background: rgba(31, 42, 51, 0.08);
  color: var(--ink);
}

@media (min-width: 720px) {
  .app-shell {
    padding: 22px 22px 60px;
  }

  .bottom-nav {
    display: none;
  }

  .hero__wrap,
  .hero__metrics,
  .proof-grid,
  .scenario-grid,
  .subscenario-grid,
  .stack-grid,
  .review-grid,
  .account-grid,
  .practice-grid,
  .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .hero__wrap {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: stretch;
  }

  .scenario-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .proof-grid,
  .review-grid,
  .account-grid,
  .subscenario-grid,
  .quick-phrases,
  .lesson-steps,
  .faq-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 719px) {
  .topbar {
    padding: 12px 14px;
    border-radius: 26px;
    align-items: start;
    flex-wrap: wrap;
  }

  .topnav {
    display: none;
  }

  .content-tools-panel {
    width: 100%;
  }

  .content-tools {
    width: 100%;
    justify-content: flex-start;
  }

  .hero,
  .scenario-card,
  .stack-card,
  .lesson-stage,
  .review-card,
  .account-card {
    border-radius: 24px;
  }

  .hero__micro-flow {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
  }

  .hero__micro-flow-steps {
    display: grid;
    grid-template-columns: 1fr;
  }

  .hero__micro-flow-steps .hero__micro-step + .hero__micro-step {
    border-left: 0;
    border-top: 1px solid rgba(255, 248, 243, 0.18);
  }
}