:root {
  --bg: #f6f3ea;
  --paper: #fffefa;
  --ink: #1f1b16;
  --muted: #6d6458;
  --line: #ddd3c2;
  --accent: #0f766e;
  --accent-2: #f59e0b;
  --accent-soft: #d8f3ee;
  --accent-3: #2563eb;
  --danger: #b91c1c;
  --danger-bg: #fee2e2;
  --ok: #166534;
  --ok-bg: #dcfce7;
  --shadow-soft: 0 10px 28px rgba(31, 27, 22, 0.07);
  --shadow-card: 0 14px 36px rgba(31, 27, 22, 0.08);
  --radius-lg: 18px;
  --radius-md: 12px;
  --font-body: "Avenir Next", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Segoe UI", sans-serif;
  --font-heading: "Avenir Next", "Hiragino Maru Gothic ProN", "Yu Gothic", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 8%, rgba(245,158,11,0.16), transparent 44%),
    radial-gradient(circle at 92% 10%, rgba(37,99,235,0.1), transparent 34%),
    radial-gradient(circle at 72% 60%, rgba(15,118,110,0.09), transparent 38%),
    var(--bg);
  font-family: var(--font-body);
  line-height: 1.55;
  min-height: 100vh;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(221, 211, 194, 0.8);
  background: rgba(255, 254, 250, 0.8);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 6px 20px rgba(31, 27, 22, 0.04);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, rgba(245,158,11,0.65), rgba(15,118,110,0.65), rgba(37,99,235,0.45));
  pointer-events: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  color: inherit;
  text-decoration: none;
  min-width: 0;
}

.brand-wordmark {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1;
  text-transform: uppercase;
}
.nav { display: flex; gap: 12px; flex-wrap: wrap; }
.nav a {
  color: var(--ink);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background-color 140ms ease, border-color 140ms ease, transform 140ms ease, color 140ms ease;
}
.nav a:hover {
  background: rgba(15,118,110,0.08);
  border-color: rgba(15,118,110,0.14);
  transform: translateY(-1px);
}
.nav a.is-active {
  background: linear-gradient(180deg, #ffffff, #f2fffd);
  border-color: rgba(15,118,110,0.22);
  color: var(--accent);
  box-shadow: 0 4px 14px rgba(15,118,110,0.08);
}

.container {
  width: min(1100px, calc(100% - 32px));
  margin: 22px auto 40px;
  animation: pageEnter 320ms cubic-bezier(.2,.8,.2,1);
}

.hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.hero > * {
  position: relative;
}

.hero > *::after {
  content: "";
  position: absolute;
  inset: auto 18px -10px 18px;
  height: 14px;
  background: radial-gradient(ellipse at center, rgba(31,27,22,0.12), rgba(31,27,22,0));
  filter: blur(8px);
  pointer-events: none;
  z-index: -1;
}

.eyebrow {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  margin: 0 0 6px;
  text-transform: uppercase;
}

.lead {
  color: var(--muted);
  max-width: 62ch;
}

.home-hero-boost {
  margin-top: 14px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(15,118,110,0.14);
  background:
    radial-gradient(circle at 100% 0%, rgba(37,99,235,0.07), transparent 40%),
    radial-gradient(circle at 0% 100%, rgba(245,158,11,0.08), transparent 44%),
    linear-gradient(180deg, rgba(255,255,255,0.95), rgba(248,255,253,0.94));
}

.home-hero-boost-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.home-hero-boost-head strong {
  font-size: 14px;
  line-height: 1.4;
}

.home-hero-boost-badge {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--accent);
  border: 1px solid rgba(15,118,110,0.18);
  background: rgba(15,118,110,0.08);
}

.home-hero-boost-stats {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.home-hero-boost-stats > div {
  border-radius: 10px;
  border: 1px solid rgba(221, 211, 194, 0.9);
  background: rgba(255,255,255,0.78);
  padding: 8px 10px;
  display: grid;
  gap: 2px;
}

.home-hero-boost-stats span {
  font-size: 11px;
  color: var(--muted);
}

.home-hero-boost-stats strong {
  font-size: 13px;
}

.home-hero-steps {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 4px;
  font-size: 13px;
}

.review-card,
.card,
.typing-shell {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.review-card {
  padding: 18px;
  background:
    radial-gradient(circle at 90% 15%, rgba(15,118,110,0.08), transparent 45%),
    radial-gradient(circle at 18% 86%, rgba(245,158,11,0.08), transparent 42%),
    var(--paper);
}
.review-card h2 { margin-top: 0; font-size: 18px; }
.review-count {
  font-size: 34px;
  font-weight: 800;
  margin: 8px 0;
  font-family: var(--font-heading);
}
.muted { color: var(--muted); }

.home-challenge-card {
  display: grid;
  gap: 14px;
}

.home-challenge-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 10px;
}

.home-challenge-head h2 {
  margin: 4px 0 0;
}

.home-challenge-progress {
  display: grid;
  gap: 10px;
}

.home-challenge-progress-value {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 10px;
}

.home-challenge-progress-value strong {
  font-size: 42px;
  line-height: 1;
  font-family: var(--font-heading);
}

.home-challenge-progress-value span {
  color: var(--muted);
  font-size: 12px;
  padding-bottom: 4px;
}

.home-challenge-progress-meter {
  overflow: hidden;
  height: 12px;
  border-radius: 999px;
  background: rgba(15,118,110,0.12);
  border: 1px solid rgba(15,118,110,0.12);
}

.home-challenge-progress-meter > span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, #0f766e, #14b8a6);
  transition: width 220ms ease;
}

.home-challenge-summary {
  margin: 0;
  color: #314155;
  line-height: 1.5;
}

.home-challenge-metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.home-challenge-metric-card {
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(221, 211, 194, 0.9);
  background: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(252,248,241,0.86));
  display: grid;
  gap: 4px;
}

.home-challenge-metric-card span,
.home-challenge-metric-card small {
  color: var(--muted);
}

.home-challenge-metric-card span {
  font-size: 11px;
}

.home-challenge-metric-card strong {
  font-size: 18px;
  line-height: 1.3;
}

.home-challenge-metric-card small {
  font-size: 11px;
}

.home-challenge-weak-keys {
  display: grid;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px solid rgba(221, 211, 194, 0.9);
}

.home-weak-key-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.home-weak-key-chip {
  padding: 10px;
  border-radius: 12px;
  border: 1px solid rgba(15,118,110,0.14);
  background: rgba(255,255,255,0.76);
  display: grid;
  gap: 4px;
  text-align: center;
}

.home-weak-key-chip span,
.home-weak-key-chip small {
  color: var(--muted);
  font-size: 11px;
}

.home-weak-key-chip strong {
  font-size: 20px;
  font-family: var(--font-heading);
}

.home-challenge-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.card {
  padding: 18px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.9), rgba(255,255,255,0.96)),
    var(--paper);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
  border-color: #d1c5af;
}
.card h3 {
  margin-top: 0;
  font-family: var(--font-heading);
}
.button-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

.btn {
  border: 1px solid var(--accent);
  background: linear-gradient(180deg, #0f8a81, #0f766e);
  color: #fff;
  text-decoration: none;
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: 0 6px 16px rgba(15,118,110,0.16);
  transition: transform 140ms ease, box-shadow 140ms ease, background-color 140ms ease, border-color 140ms ease;
}
.btn.ghost {
  background: rgba(255,255,255,0.72);
  color: var(--accent);
  border-color: rgba(15,118,110,0.22);
  box-shadow: none;
}
.btn.small {
  padding: 6px 10px;
  font-size: 12px;
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(15,118,110,0.2);
}
.btn.ghost:hover {
  background: rgba(15,118,110,0.06);
  box-shadow: 0 4px 14px rgba(15,118,110,0.08);
}
.btn:active {
  transform: translateY(0);
}
.btn:focus-visible,
.nav a:focus-visible,
.typebox:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.18);
  outline-offset: 2px;
}

.typing-shell {
  padding: 18px;
  background:
    radial-gradient(circle at 100% 0%, rgba(15,118,110,0.05), transparent 36%),
    radial-gradient(circle at 0% 100%, rgba(245,158,11,0.06), transparent 38%),
    var(--paper);
}
.dashboard-shell {
  display: grid;
  gap: 16px;
}
.page-tabs {
  display: grid;
  gap: 14px;
}
.page-tab-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 4px;
  border-radius: 16px;
  border: 1px solid rgba(221, 211, 194, 0.95);
  background: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(250,246,238,0.92));
  box-shadow: var(--shadow-soft);
}
.page-tab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 9px 14px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease, transform 160ms ease;
}
.page-tab-btn:hover {
  color: var(--ink);
  border-color: rgba(216, 207, 191, 0.95);
  background: rgba(255,255,255,0.9);
}
.page-tab-btn.is-active {
  color: #fff;
  border-color: #0f8b8a;
  background: linear-gradient(180deg, var(--accent), #0ea5a4);
  box-shadow: 0 12px 24px rgba(15, 118, 110, 0.16);
}
.page-tab-panels {
  display: grid;
  min-width: 0;
}
.page-tab-panel {
  display: grid;
  gap: 16px;
  min-width: 0;
}
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}
.typing-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 12px;
  margin-bottom: 10px;
}
.typing-header h2 { margin: 0; }

.prompt {
  min-height: 56px;
  font-size: 30px;
  line-height: 1.45;
  letter-spacing: 0.03em;
  margin: 8px 0 12px;
  padding: 12px;
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.94), rgba(255,255,255,0.88)),
    #faf6ee;
  border: 1px solid var(--line);
  word-break: break-word;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
}

.prompt.sentence { font-size: 24px; }

.prompt .char { border-bottom: 2px solid transparent; }
.prompt .char.done { color: var(--ok); }
.prompt .char.current {
  border-bottom-color: var(--accent-2);
  background: rgba(217, 119, 6, 0.08);
}
.prompt .char.error {
  color: #fff;
  background: var(--danger);
  border-radius: 4px;
}

.cloze-panel {
  margin: 8px 0 12px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(37, 99, 235, 0.2);
  background:
    radial-gradient(circle at 100% 0%, rgba(37,99,235,0.08), transparent 45%),
    linear-gradient(180deg, rgba(255,255,255,0.96), rgba(243,248,255,0.96));
}

.cloze-prompt {
  margin: 4px 0 10px;
  font-size: 20px;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

.cloze-blank {
  display: inline-block;
  min-width: 96px;
  padding: 0 6px;
  text-align: center;
  border-bottom: 2px dashed rgba(15, 118, 110, 0.65);
  font-weight: 700;
  color: rgba(31, 27, 22, 0.64);
}

.cloze-choices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.cloze-choice {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.9);
  font-size: 15px;
}

.cloze-choice-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  border: 1px solid rgba(15, 118, 110, 0.28);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  background: rgba(15,118,110,0.08);
  flex: 0 0 auto;
}

.prompt.is-cloze-answer .char {
  color: rgba(31, 27, 22, 0.28);
}

.prompt.is-cloze-answer .char.done {
  color: var(--ok);
}

.typebox {
  width: 100%;
  max-width: 720px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 2px solid var(--line);
  font-size: 22px;
  background: rgba(255,255,255,0.95);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
  transition: border-color 120ms ease, background-color 120ms ease, box-shadow 120ms ease;
}

.typebox:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.8),
    0 0 0 4px rgba(15,118,110,0.08);
}

.typebox.miss-flash {
  border-color: var(--danger);
  background: var(--danger-bg);
  color: var(--danger);
}

.stats-panel {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin: 12px 0;
}

.stats-panel > div {
  display: flex;
  gap: 8px;
  align-items: center;
  background: linear-gradient(180deg, #fffdf8, #faf5eb);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 10px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
}

.inline-control {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  background: linear-gradient(180deg, #fffdf8, #faf5eb);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 10px;
}

.control-select {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255,255,255,0.95);
  color: var(--ink);
  padding: 4px 8px;
  min-width: 170px;
  max-width: 260px;
}
.control-select.wide {
  min-width: 260px;
  max-width: 100%;
}

.label { color: var(--muted); font-size: 12px; text-transform: uppercase; }

.feedback {
  margin-top: 10px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid #b9ddcf;
  background:
    radial-gradient(circle at 100% 0%, rgba(37,99,235,0.08), transparent 32%),
    linear-gradient(180deg, #f6fffb, #ecfbf5);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
}
.feedback-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 12px;
  margin-bottom: 12px;
}
.feedback-answer {
  margin: 2px 0 0;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.05;
  color: var(--ok);
  letter-spacing: 0.03em;
  word-break: break-word;
}
.feedback-stats-slot {
  flex: 0 1 auto;
}
.feedback-stats-slot .stats-panel {
  margin: 0;
  justify-content: flex-end;
}
.feedback-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.feedback-card {
  display: grid;
  gap: 6px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(185, 221, 207, 0.95);
  background: rgba(255,255,255,0.76);
}
.feedback-card-primary {
  background: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(243,255,250,0.9));
}
.feedback-card-wide {
  grid-column: 1 / -1;
}
.feedback-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.feedback-card p {
  margin: 0;
  font-size: 18px;
  line-height: 1.6;
}
.feedback-examples {
  display: grid;
  gap: 8px;
  font-size: 16px;
  line-height: 1.7;
}
.feedback-tip {
  margin: 12px 2px 0;
  font-size: 13px;
}
.hidden { display: none !important; }

.result-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 16px;
  margin-bottom: 10px;
}
.btn.replay-btn {
  border-color: #ea580c;
  background: linear-gradient(180deg, #fb923c, #ea580c);
  color: #fff;
  box-shadow: 0 8px 18px rgba(234, 88, 12, 0.2);
}
.btn.replay-btn:hover {
  box-shadow: 0 10px 20px rgba(234, 88, 12, 0.24);
}
.share-panel {
  margin-bottom: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fffaf2;
}
.share-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.share-panel .muted {
  margin: 8px 0 0;
}
.session-result {
  margin-top: 12px;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 95% 10%, rgba(37,99,235,0.05), transparent 35%),
    #fcfbf7;
}
.session-result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin: 10px 0 12px;
}
.session-result-grid > div {
  display: grid;
  gap: 4px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
}
.daily-session-panel {
  margin: 10px 0 12px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid #b9ddcf;
  background: linear-gradient(180deg, #f7fffb, #eefcf6);
}
.daily-session-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}
.daily-session-panel-head h4 {
  margin: 0;
  font-size: 15px;
}
.daily-session-bars {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}
.daily-session-bar-row {
  display: grid;
  gap: 6px;
}
.daily-session-bar-label {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
}
.daily-session-bar-label strong {
  font-size: 13px;
  margin: 0;
}
.daily-session-panel .daily-progress-bar {
  height: 12px;
}
.daily-session-panel .daily-progress-bar span {
  transition: width 520ms cubic-bezier(.2,.9,.2,1), filter 220ms ease;
}
.daily-session-panel.is-animating .daily-progress-bar span {
  filter: saturate(1.2) brightness(1.05);
}
.daily-thumb {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 24px;
  transform-origin: 55% 65%;
}
.daily-thumb.bump {
  animation: thumbBump 560ms ease;
}
.daily-thumb.success {
  border-color: #86efac;
  background: #ecfdf5;
  box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.35);
  animation: thumbCelebrate 1.1s ease, thumbGlow 1.1s ease;
}

@keyframes thumbBump {
  0% { transform: scale(1) rotate(0deg); }
  35% { transform: scale(1.16) rotate(-10deg); }
  65% { transform: scale(1.06) rotate(8deg); }
  100% { transform: scale(1) rotate(0deg); }
}

@keyframes thumbCelebrate {
  0% { transform: rotate(0deg) scale(1); }
  15% { transform: rotate(-16deg) scale(1.08); }
  30% { transform: rotate(14deg) scale(1.12); }
  45% { transform: rotate(-12deg) scale(1.08); }
  60% { transform: rotate(10deg) scale(1.12); }
  75% { transform: rotate(-8deg) scale(1.05); }
  100% { transform: rotate(0deg) scale(1); }
}

@keyframes thumbGlow {
  0% { box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.35); }
  70% { box-shadow: 0 0 0 14px rgba(22, 163, 74, 0); }
  100% { box-shadow: 0 0 0 0 rgba(22, 163, 74, 0); }
}
.weak-key-card {
  margin-bottom: 10px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fcfbf7;
}
.weak-key-card h3 {
  margin: 0;
  font-size: 16px;
}
.weak-key-body .muted {
  margin: 0 0 8px;
}
.week-over-week-card {
  margin: 0 0 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}
.week-over-week-card h3 {
  margin: 0 0 6px;
  font-size: 14px;
}
.week-over-week-summary {
  margin: 0;
  font-size: 13px;
}
.weak-key-sections {
  display: grid;
  gap: 12px;
}
.weak-key-subsection h3 {
  margin: 0 0 6px;
  font-size: 14px;
}
.weak-key-heatmap-wrap {
  margin-top: 12px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}
.weak-key-heatmap-wrap .keyboard {
  margin-top: 8px;
  overflow-x: auto;
}
.weak-key-heatmap-wrap .keyboard-row {
  min-width: 860px;
}
.key-chip-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.key-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid #e5dccb;
  background: #fff;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
}
.key-name {
  display: inline-grid;
  place-items: center;
  min-width: 24px;
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid #d8cfbf;
  background: #faf6ee;
  font-weight: 700;
}
.term-chip-name {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid #d8cfbf;
  background: #faf6ee;
  font-weight: 700;
}
.key-count {
  color: var(--muted);
  font-weight: 600;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.summary-card,
.chart-card,
.table-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  box-shadow: var(--shadow-soft);
  min-width: 0;
}
.summary-card strong {
  display: block;
  font-size: 28px;
  margin-top: 6px;
  font-family: var(--font-heading);
}
.summary-card.summary-card-wide {
  grid-column: span 3;
}
.summary-card.summary-card-double {
  grid-column: span 2;
}
.summary-card.summary-card-wide strong {
  font-size: 20px;
}
.summary-card.summary-card-wide p {
  margin: 6px 0 0;
}
.summary-card.summary-card-side-metrics {
  grid-column: span 1;
  display: grid;
  gap: 10px;
}
.summary-card.summary-card-side-metrics .chart-head {
  align-items: flex-start;
}
.summary-card.summary-card-side-metrics .chart-head h2 {
  font-size: 16px;
}
.summary-card.summary-card-side-metrics .chart-head p {
  margin: 0;
}
.summary-card.summary-card-coverage {
  display: grid;
  gap: 8px;
  align-content: start;
}
.summary-card.summary-card-coverage strong {
  font-size: 24px;
}
.coverage-meter {
  overflow: hidden;
  height: 10px;
  border-radius: 999px;
  background: rgba(15,118,110,0.12);
  border: 1px solid rgba(15,118,110,0.12);
}
.coverage-meter > span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, #0f766e, #14b8a6);
  transition: width 220ms ease;
}
.metric-list {
  display: grid;
  gap: 8px;
}
.metric-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: start;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}
.metric-row strong {
  margin: 0;
  font-size: 24px;
  line-height: 1.1;
  text-align: right;
}
.metric-help {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.daily-challenge-card {
  display: grid;
  gap: 10px;
}
.daily-challenge-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 8px;
}
.daily-challenge-head h3 {
  margin: 0;
  font-size: 18px;
}
.daily-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #faf6ee;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  white-space: nowrap;
}
.daily-badge.success {
  border-color: #86efac;
  background: var(--ok-bg);
  color: var(--ok);
}
.daily-progress-grid {
  display: grid;
  gap: 10px;
}
.daily-progress-label {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
}
.daily-progress-label strong {
  font-size: 13px;
  margin: 0;
}
.daily-progress-bar,
.daily-mini-meter {
  height: 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #faf6ee;
  overflow: hidden;
}
.daily-progress-bar span,
.daily-mini-meter span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), #14b8a6);
}
.daily-mini-meter {
  height: 6px;
}
.daily-goal-summary {
  margin: 0;
}
.daily-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chart-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  flex-wrap: wrap;
}
.chart-head h2 {
  margin: 0;
  font-size: 18px;
}
.metric-toggle-group {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px;
  background: #faf6ee;
  gap: 2px;
}
.metric-toggle-btn {
  border: 0;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
}
.metric-toggle-btn[aria-pressed="true"] {
  color: #fff;
  background: var(--accent);
}
.chart-area {
  margin-top: 10px;
  min-height: 180px;
  border-radius: 10px;
  background: linear-gradient(180deg, #fdfaf2, #faf6ee);
  border: 1px solid var(--line);
  padding: 8px;
}
.chart-empty {
  color: var(--muted);
  display: grid;
  place-items: center;
  min-height: 160px;
}

.table-scroll {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  margin-top: 10px;
}
.history-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  table-layout: fixed;
  min-width: 0;
}
.history-table th,
.history-table td {
  border-bottom: 1px solid #eee4d3;
  padding: 8px 10px;
  font-size: 13px;
  vertical-align: top;
  text-align: left;
}
.history-table thead th {
  background: #faf6ee;
  position: sticky;
  top: 0;
  z-index: 1;
}
.history-table col.history-col-date {
  width: 10%;
}
.history-table col.history-col-compact {
  width: 6%;
}
.history-table col.history-col-main {
  width: 12%;
}
.history-table col.history-col-feedback {
  width: 9%;
}
.history-table col.history-col-jp {
  width: 9%;
}
.history-table col.history-col-synonyms {
  width: 12%;
}
.history-table col.history-col-examples {
  width: 24%;
}
.cell-text {
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.cell-main {
  width: 12%;
}
.cell-feedback {
  white-space: normal;
}
.cell-synonyms {
  width: 12%;
}
.cell-examples {
  width: 24%;
}

.keyboard {
  margin-top: 16px;
  --key-unit: 58px;
  --key-gap: 6px;
  --key-height: 38px;
  background: linear-gradient(180deg, #f0eadf, #e8e1d4);
  border: 1px solid #cdbfa8;
  border-radius: 16px;
  padding: 12px;
  max-width: 100%;
  overflow-x: auto;
  box-shadow:
    inset 0 2px 0 rgba(255,255,255,0.7),
    0 10px 20px rgba(26, 23, 19, 0.07);
}

.keyboard-row {
  display: flex;
  gap: var(--key-gap);
  margin-bottom: var(--key-gap);
  align-items: center;
}
.keyboard-row:last-child { margin-bottom: 0; }

.key {
  --span: 1;
  border: 1px solid #cabda7;
  border-bottom-color: #b7aa92;
  background: linear-gradient(180deg, #ffffff, #f3eee3);
  border-radius: 10px;
  min-height: var(--key-height);
  height: var(--key-height);
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  color: #352f27;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.9),
    0 2px 0 rgba(190, 176, 151, 0.6);
  transition: transform 80ms ease, background-color 80ms ease, color 80ms ease, box-shadow 80ms ease;
  flex: 0 0 calc((var(--key-unit) * var(--span)) + (var(--key-gap) * (var(--span) - 1)));
  padding: 0 6px;
  position: relative;
  z-index: 0;
}
.key.is-modifier {
  font-size: 11px;
  color: #62584a;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.key.role-tab,
.key.role-caps,
.key.role-shift,
.key.role-ctrl,
.key.role-delete,
.key.role-enter {
  background: linear-gradient(180deg, #fdfcf9, #eee7da);
  border-color: #b9cfbf;
  border-bottom-color: #aabcae;
}
.key.role-tab,
.key.role-caps,
.key.role-shift,
.key.role-ctrl {
  justify-items: start;
  padding-left: 12px;
}
.key.role-delete {
  justify-items: center;
  font-size: 10px;
  letter-spacing: 0;
}
.key.role-enter {
  justify-items: center;
  padding-left: 6px;
  padding-right: 6px;
}
.keyboard[data-layout="jp"] .key.jis-enter {
  z-index: 2;
  overflow: visible;
}
.keyboard[data-layout="jp"] .key.jis-enter::before {
  content: "";
  position: absolute;
  left: -1px;
  top: calc(-1 * ((((var(--key-unit) * 2) + var(--key-gap)) - var(--key-height)) + 1px));
  width: calc((var(--key-unit) * 2) + var(--key-gap));
  height: calc(((var(--key-unit) * 2) + var(--key-gap)) - var(--key-height) + 1px);
  border: 1px solid #b9cfbf;
  border-bottom: none;
  border-radius: 10px 10px 0 0;
  background: linear-gradient(180deg, #fdfcf9, #eee7da);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
  pointer-events: none;
}
.keyboard[data-layout="jp"] .key.jis-enter::after {
  content: "";
  position: absolute;
  top: calc(-1 * (var(--key-gap) + 1px));
  left: -1px;
  width: calc((var(--key-unit) * 2) + var(--key-gap) + 2px);
  height: calc(var(--key-gap) + 2px);
  background: linear-gradient(180deg, #fdfcf9, #eee7da);
  pointer-events: none;
}
.key.w-1 { --span: 1; }
.key.w-1-5 { --span: 1.5; }
.key.w-2 { --span: 2; }
.key.w-2-5 { --span: 2.5; }
.key.w-3 { --span: 3; }
.key.w-3-5 { --span: 3.5; }
.key.w-4 { --span: 4; }
.key.w-5 { --span: 5; }
.key.w-6 { --span: 6; }
.key.w-7 { --span: 7; }
.key.w-8 { --span: 8; }
.key.w-9 { --span: 9; }
.key.w-10 { --span: 10; }
.key.w-12 { --span: 12; }
.key.w-20 { --span: 20; }
.key.home { outline: 2px solid rgba(15,118,110,0.25); }
.key.hit {
  background: var(--ok-bg);
  color: var(--ok);
  border-color: #86efac;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.8),
    0 1px 0 rgba(134, 239, 172, 0.7);
}
.key.miss {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: #fca5a5;
}
.key.shift {
  background: #fff7ed;
  border-color: #fdba74;
}
.key.heatmap {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.75), rgba(255,255,255,0.45)),
    rgba(217, 119, 6, var(--heat-alpha, 0.2));
  border-color: rgba(217, 119, 6, calc(var(--heat-alpha, 0.2) + 0.2));
  color: #7c2d12;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.9),
    0 1px 0 rgba(217, 119, 6, 0.25);
}
.keyboard[data-layout="jp"] .key.jis-enter.shift::before {
  border-color: #fdba74;
  background: #fff7ed;
}
.key:active {
  transform: translateY(1px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.5);
}
.key.blank {
  visibility: hidden;
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  pointer-events: none;
}

.empty-state {
  border: 1px dashed var(--line);
  border-radius: 12px;
  padding: 18px;
  background: linear-gradient(180deg, #fff, #fffcf6);
}

.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;
}

.owner-shell {
  display: grid;
  gap: 16px;
}
.settings-shell {
  display: grid;
  gap: 16px;
}
.settings-grid {
  display: grid;
  gap: 12px;
  margin-top: 10px;
}
.settings-grid label {
  display: grid;
  gap: 6px;
}
.settings-grid label > span {
  font-size: 12px;
  color: var(--muted);
}
.settings-grid input,
.settings-grid select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  background: rgba(255,255,255,0.95);
}
.settings-check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.settings-check input {
  width: 18px;
  height: 18px;
}
.settings-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.account-compact-card {
  margin-top: 10px;
  display: grid;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: linear-gradient(180deg, #fffdf8, #faf6ee);
}
.account-compact-head {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  align-items: flex-start;
}
.account-compact-head p {
  margin: 0;
}
.account-summary-text {
  margin-top: 6px;
  font-weight: 600;
  color: var(--ink);
}

.account-modal {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: grid;
  place-items: center;
  padding: 20px;
}
.account-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(22, 19, 16, 0.45);
  backdrop-filter: blur(4px);
}
.account-modal-panel {
  position: relative;
  width: min(720px, calc(100vw - 24px));
  max-height: min(88vh, 900px);
  overflow: auto;
  border-radius: 18px;
  border: 1px solid #d8cfbf;
  background: linear-gradient(180deg, #fffefb, #fff8ee 55%, #fffdf8);
  box-shadow: 0 30px 80px rgba(16, 14, 12, 0.24);
  padding: 16px;
}
.account-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.account-modal-header h2 {
  margin: 2px 0 0;
  font-size: 20px;
}
.account-modal-tabs {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.account-tab-btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 12px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
.account-tab-btn.is-active {
  background: linear-gradient(180deg, var(--accent), #0ea5a4);
  border-color: #0f8b8a;
  color: #fff;
}
.account-inline-status {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fffaf2;
}
.account-tab-panels {
  margin-top: 12px;
}
.account-tab-panel {
  border: 1px solid #eadfcd;
  border-radius: 12px;
  background: rgba(255,255,255,0.88);
  padding: 12px;
}
.account-logged-panel {
  display: grid;
  gap: 10px;
}
.account-logged-panel p {
  margin: 0;
}
.account-logged-title {
  font-size: 15px;
}
.account-recovery-card {
  display: grid;
  gap: 10px;
  border: 1px dashed #d7c9b2;
  border-radius: 12px;
  padding: 12px;
  background: #fffdf8;
}
.account-recovery-card p {
  margin: 0;
}
.account-recovery-card input[readonly] {
  letter-spacing: 0.06em;
  font-weight: 700;
}

.home-start-tip-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 20px;
}

.home-start-tip-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(22, 19, 16, 0.42);
  backdrop-filter: blur(3px);
}

.home-start-tip-panel {
  position: relative;
  width: min(620px, calc(100vw - 24px));
  border-radius: 16px;
  border: 1px solid #d8cfbf;
  background: linear-gradient(180deg, #fffefb, #fff8ee 55%, #fffdf8);
  box-shadow: 0 26px 70px rgba(16, 14, 12, 0.24);
  padding: 18px;
}

.home-start-tip-panel h2 {
  margin: 4px 0 8px;
  font-size: 30px;
  line-height: 1.2;
}

.home-start-tip-message {
  margin: 0;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
}

.home-start-tip-hint {
  margin: 12px 0 0;
  color: var(--accent);
  font-weight: 700;
}

.home-start-tip-toggle {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid #eadfcd;
}

body.modal-open {
  overflow: hidden;
}

.grammar-hero,
.grammar-article-shell {
  display: grid;
  gap: 18px;
}

.grammar-hero {
  grid-template-columns: 1.35fr 0.95fr;
  margin-bottom: 24px;
}

.grammar-hero-copy,
.grammar-sidebar-box,
.grammar-list-card,
.grammar-example-card,
.grammar-stat-card {
  background: rgba(255, 254, 250, 0.9);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.grammar-hero-copy {
  padding: 24px;
}

.grammar-hero-copy h1,
.grammar-article-header h1 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: clamp(30px, 4vw, 44px);
}

.grammar-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.grammar-stat-card {
  padding: 14px;
  display: grid;
  gap: 4px;
}

.grammar-stat-card span,
.grammar-topic-meta,
.grammar-subtitle {
  color: var(--muted);
}

.grammar-stat-card strong {
  font-size: 22px;
  font-family: var(--font-heading);
}

.grammar-hero-panel {
  height: 100%;
}

.grammar-check-list,
.grammar-bullet-list,
.grammar-related-block ul,
.grammar-sidebar-group ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.grammar-card-grid,
.grammar-preview-grid,
.grammar-mini-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grammar-topic-card h3 a,
.grammar-list-card h3 a,
.grammar-sidebar-group a,
.grammar-related-block a {
  color: inherit;
  text-decoration: none;
}

.grammar-topic-card h3 a:hover,
.grammar-list-card h3 a:hover,
.grammar-sidebar-group a:hover,
.grammar-related-block a:hover,
.grammar-anchor-nav a:hover {
  color: var(--accent);
}

.grammar-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.grammar-chip {
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 12px;
  color: var(--accent);
  background: rgba(15, 118, 110, 0.08);
  border: 1px solid rgba(15, 118, 110, 0.16);
}

.grammar-phase-section {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.grammar-phase-head,
.grammar-practice-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 12px;
}

.grammar-topic-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.grammar-read-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 54px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  background: rgba(109, 100, 88, 0.08);
  border: 1px solid rgba(109, 100, 88, 0.16);
}

.grammar-list-card.is-completed .grammar-read-badge,
.grammar-read-badge.is-completed {
  color: var(--ok);
  background: var(--ok-bg);
  border-color: rgba(22, 101, 52, 0.16);
}

.grammar-progress-panel {
  margin: 14px 0;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid rgba(15, 118, 110, 0.14);
  background: rgba(255,255,255,0.7);
  display: grid;
  gap: 10px;
}

.grammar-progress-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}

.grammar-progress-meter > span {
  transition: width 180ms ease;
}

.grammar-list-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.grammar-list-card {
  padding: 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
}

.grammar-phase-card {
  display: grid;
  gap: 12px;
}

.grammar-phase-card-foot {
  display: grid;
  gap: 12px;
  align-content: end;
}

.grammar-list-main h3,
.grammar-topic-card h3 {
  margin-bottom: 4px;
}

.grammar-list-side {
  min-width: 180px;
  display: grid;
  align-content: space-between;
  gap: 12px;
  justify-items: end;
}

.grammar-article-shell {
  grid-template-columns: 240px minmax(0, 1fr) 240px;
  align-items: start;
}

.grammar-sidebar,
.grammar-toc {
  position: sticky;
  top: 86px;
}

.grammar-sidebar-box {
  padding: 18px;
}

.grammar-sidebar-group {
  margin-top: 16px;
}

.grammar-sidebar-group a {
  display: block;
  padding: 6px 0;
}

.grammar-sidebar-group a.is-active {
  color: var(--accent);
  font-weight: 700;
}

.grammar-article {
  display: grid;
  gap: 18px;
  padding: 24px;
}

.grammar-article-header {
  display: grid;
  gap: 8px;
}

.grammar-subtitle {
  margin: 0;
  font-size: 18px;
}

.grammar-section {
  display: grid;
  gap: 14px;
  padding-top: 8px;
  border-top: 1px solid rgba(221, 211, 194, 0.8);
  scroll-margin-top: 110px;
}

.grammar-section h2 {
  margin: 0;
}

.grammar-diagram {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 10px;
}

.grammar-diagram-node {
  padding: 14px 12px;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(242,255,253,0.94));
  border: 1px solid rgba(15, 118, 110, 0.14);
  display: grid;
  gap: 6px;
  text-align: center;
}

.grammar-diagram-node span {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.grammar-diagram-node strong {
  font-size: 18px;
}

.grammar-diagram-node small {
  font-size: 13px;
  color: var(--accent);
  font-weight: 700;
}

.grammar-example-card {
  padding: 18px;
}

.grammar-example-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.grammar-example-label {
  display: inline-flex;
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
}

.grammar-example-card strong {
  display: block;
  font-size: 22px;
  margin-bottom: 8px;
  line-height: 1.5;
}

.grammar-example-line {
  display: block;
}

.grammar-focus {
  padding: 0 0.18em;
  border-radius: 0.35em;
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.26), rgba(245, 158, 11, 0.38));
  color: inherit;
}

.grammar-anchor-nav {
  display: grid;
  gap: 8px;
}

.grammar-anchor-nav a {
  color: inherit;
  text-decoration: none;
}

.grammar-related-block {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.grammar-practice-panel {
  border-radius: 18px;
  padding: 20px;
  background:
    radial-gradient(circle at 100% 0%, rgba(37,99,235,0.08), transparent 38%),
    radial-gradient(circle at 0% 100%, rgba(245,158,11,0.08), transparent 42%),
    rgba(255,255,255,0.9);
}

.grammar-practice-prompt {
  font-size: 20px;
  font-weight: 700;
  margin: 0;
}

.grammar-practice-label {
  font-size: 13px;
  color: var(--muted);
}

.grammar-practice-input {
  width: 100%;
}

.grammar-practice-status {
  margin: 0;
}

.grammar-practice-status.is-correct {
  color: var(--ok);
}

.grammar-practice-status.is-progress {
  color: var(--accent);
}

.grammar-practice-status.is-wrong {
  color: var(--danger);
}

.grammar-pitfall-wrong,
.grammar-pitfall-correct {
  margin: 0;
  font-weight: 700;
}

.grammar-pitfall-wrong {
  color: var(--danger);
}

.grammar-pitfall-correct {
  color: var(--ok);
}

@media (max-width: 1080px) {
  .grammar-article-shell {
    grid-template-columns: 220px minmax(0, 1fr);
  }
  .grammar-toc {
    grid-column: 1 / -1;
    position: static;
  }
}

@media (max-width: 820px) {
  .grammar-hero,
  .grammar-article-shell,
  .grammar-list-card {
    grid-template-columns: 1fr;
  }
  .grammar-sidebar,
  .grammar-toc {
    position: static;
  }
  .grammar-list-side {
    min-width: 0;
    justify-items: start;
  }
  .grammar-list-grid {
    grid-template-columns: 1fr;
  }
  .grammar-progress-head,
  .grammar-topic-actions {
    align-items: flex-start;
    flex-direction: column;
  }
  .grammar-hero-stats,
  .grammar-card-grid,
  .grammar-preview-grid,
  .grammar-mini-grid,
  .grammar-example-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .account-compact-head {
    display: grid;
  }
  .account-modal {
    padding: 10px;
    align-items: end;
  }
  .account-modal-panel {
    width: 100%;
    max-height: 92vh;
    border-radius: 16px 16px 10px 10px;
    padding: 14px;
  }
  .account-modal-tabs {
    display: grid;
    grid-template-columns: 1fr;
  }
  .account-tab-btn {
    text-align: left;
  }
  .home-start-tip-modal {
    padding: 10px;
    align-items: end;
  }
  .home-start-tip-panel {
    width: 100%;
    border-radius: 16px 16px 10px 10px;
    padding: 14px;
  }
  .home-start-tip-panel h2 {
    font-size: 24px;
  }
  .home-start-tip-message {
    font-size: 16px;
  }
}

.alert {
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #faf6ee;
  padding: 12px 14px;
}
.alert-success {
  background: #effcf7;
  border-color: #b9ddcf;
}
.alert-error {
  background: #fff1f2;
  border-color: #fecdd3;
}

.owner-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 10px;
}
.owner-form label {
  display: grid;
  gap: 6px;
}
.owner-form label > span {
  font-size: 12px;
  color: var(--muted);
}
.owner-form input,
.owner-form select,
.owner-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  background: rgba(255,255,255,0.95);
}
.owner-form textarea {
  resize: vertical;
}
.owner-form-wide {
  grid-column: 1 / -1;
}
.owner-form-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-start;
}
.owner-filter-form {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 10px;
}
.owner-filter-form label {
  display: grid;
  gap: 6px;
}
.owner-filter-form label > span {
  font-size: 12px;
  color: var(--muted);
}
.owner-filter-form input,
.owner-filter-form select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  background: rgba(255,255,255,0.95);
}
.owner-filter-wide {
  grid-column: 1 / -1;
}
.owner-filter-actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.owner-content-panel {
  display: grid;
  gap: 10px;
}
.owner-filter-sticky {
  position: sticky;
  top: 8px;
  z-index: 3;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 252, 246, 0.96);
  box-shadow: 0 8px 18px rgba(53, 47, 39, 0.06);
}
.owner-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}
.owner-pagination-links {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.owner-content-scroll {
  max-height: min(68vh, 920px);
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
}
.owner-content-scroll .history-table {
  margin: 0;
}
.owner-content-scroll thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #faf6ee;
}
.admin-table td:last-child {
  min-width: 360px;
}
.admin-edit-details summary {
  cursor: pointer;
  color: var(--accent);
  font-weight: 600;
}
.owner-edit-form {
  margin-top: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #faf6ee;
}
.owner-edit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.owner-edit-grid label {
  display: grid;
  gap: 6px;
}
.owner-edit-grid label > span {
  font-size: 12px;
  color: var(--muted);
}
.owner-edit-grid input,
.owner-edit-grid select,
.owner-edit-grid textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  font: inherit;
  background: rgba(255,255,255,0.95);
}
.owner-edit-grid textarea {
  resize: vertical;
}
.owner-edit-wide {
  grid-column: 1 / -1;
}
.owner-edit-actions {
  margin-top: 10px;
  display: flex;
  justify-content: flex-start;
}
.dashboard-feedback-details {
  min-width: 108px;
  width: 100%;
}
.dashboard-feedback-details > summary {
  list-style: none;
  display: inline-flex;
  align-items: center;
}
.dashboard-feedback-details > summary::-webkit-details-marker {
  display: none;
}
.dashboard-feedback-form {
  margin-top: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #faf6ee;
  display: grid;
  gap: 8px;
}
.dashboard-feedback-form select,
.dashboard-feedback-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  font: inherit;
  background: rgba(255,255,255,0.95);
}
.dashboard-feedback-form textarea {
  resize: vertical;
}
.dashboard-feedback-form .owner-edit-actions {
  margin-top: 0;
  align-items: center;
  gap: 8px;
}
.owner-inline-add {
  padding: 6px 0;
}
.owner-inline-grid {
  display: grid;
  grid-template-columns: 1.1fr 1.1fr 1.5fr 120px auto auto;
  gap: 8px;
  align-items: center;
}
.owner-inline-grid input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  font: inherit;
  background: rgba(255,255,255,0.95);
}
.admin-note {
  margin-top: 10px;
}
.ranking-table {
  min-width: 640px;
}
.ranking-table td strong {
  font-size: 15px;
}
.ranking-table tr.rank-top-1 td:first-child { color: #b45309; font-weight: 700; }
.ranking-table tr.rank-top-2 td:first-child { color: #475569; font-weight: 700; }
.ranking-table tr.rank-top-3 td:first-child { color: #9a3412; font-weight: 700; }

.hero h1,
.typing-header h2,
.dashboard-header h1,
.dashboard-header h2,
.card h2,
.card h3 {
  font-family: var(--font-heading);
  letter-spacing: 0.01em;
}

.hero h1 {
  margin: 0 0 10px;
  line-height: 1.2;
  font-size: clamp(28px, 4vw, 38px);
}

.home-hero-title-icon {
  margin: 0 0 10px;
}

.home-hero-title-icon img {
  display: block;
  width: min(100%, 450px);
  height: auto;
}

.home-feedback-section {
  margin-top: 22px;
}

.page-main-index .container {
  padding-bottom: 110px;
}

.page-main-index .home-footer {
  position: fixed;
  left: 50%;
  bottom: max(10px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  width: min(1100px, calc(100% - 24px));
  z-index: 9;
  display: grid;
  gap: 10px;
  padding: 12px 14px 10px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(246, 243, 234, 0.84), rgba(246, 243, 234, 0.94));
  border: 1px solid rgba(221, 211, 194, 0.72);
  box-shadow: 0 12px 30px rgba(31, 27, 22, 0.12);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.home-footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  padding: 2px 6px;
  color: var(--muted);
  font-size: 14px;
}

.home-footer-links a {
  color: inherit;
  text-decoration: none;
}

.home-footer-links a:hover {
  text-decoration: underline;
}

.ad-slot {
  margin-top: 12px;
  padding: 12px;
  border: 1px dashed #ccbda5;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255,255,255,0.94), rgba(250,246,238,0.95));
}

.ad-slot-title {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
}

.ad-slot-frame {
  min-height: 96px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255,255,255,0.9);
  display: grid;
  place-items: center;
  padding: 8px;
}

.ad-slot-note {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

.ad-slot-footer .ad-slot-frame {
  min-height: 120px;
}

.ad-slot-session {
  margin-bottom: 12px;
}

.hero > div:first-child {
  padding: 18px;
  border: 1px solid rgba(221, 211, 194, 0.9);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255,255,255,0.95), rgba(255,254,250,0.95)),
    var(--paper);
  box-shadow: var(--shadow-soft);
}

.hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(245,158,11,0.2);
  background: rgba(245,158,11,0.08);
}

.hero .eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent-2);
  box-shadow: 0 0 0 5px rgba(245,158,11,0.14);
}

.typing-shell,
.page-tab-panel,
.dashboard-shell .summary-card,
.dashboard-shell .chart-card,
.dashboard-shell .table-card {
  animation: riseIn 360ms cubic-bezier(.2,.8,.2,1);
}

.site-footer {
  padding: 10px 20px 24px;
}

.site-footer-inner {
  width: min(1120px, calc(100% - 24px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer-brand {
  font-weight: 700;
}

.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.site-footer-links a {
  color: inherit;
}

.legal-shell {
  display: grid;
  gap: 14px;
}

.legal-card h2 {
  margin-bottom: 10px;
}

.home-overview-section {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.grammar-preview-section {
  margin-top: 24px;
}

.home-feedback-section {
  margin-top: 28px;
}

.home-overview-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.home-overview-header .muted {
  margin: 0;
  max-width: 480px;
}

.home-overview-grid {
  align-items: stretch;
}

.home-overview-grid .card {
  height: 100%;
}

.legal-card p:last-child,
.legal-card ul:last-child {
  margin-bottom: 0;
}

.legal-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}

@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 820px) {
  .site-header {
    align-items: flex-start;
    padding: 12px 14px;
  }
  .brand {
    width: 100%;
    margin-bottom: 4px;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  .brand-wordmark {
    font-size: clamp(16px, 7vw, 26px);
  }
  .nav {
    gap: 8px;
  }
  .nav a {
    padding: 7px 10px;
    font-size: 13px;
  }
  .hero,
  .card-grid,
  .summary-grid {
    grid-template-columns: 1fr;
  }
  .hero > div:first-child {
    padding: 16px;
  }
  .home-hero-boost-head {
    align-items: flex-start;
    flex-direction: column;
  }
  .home-hero-boost-stats {
    grid-template-columns: 1fr;
  }
  .home-challenge-metric-grid,
  .home-weak-key-list {
    grid-template-columns: 1fr;
  }
  .feedback-head {
    flex-direction: column;
  }
  .feedback-stats-slot {
    width: 100%;
  }
  .feedback-stats-slot .stats-panel {
    justify-content: flex-start;
  }
  .feedback-grid {
    grid-template-columns: 1fr;
  }
  .prompt { font-size: 22px; }
  .prompt.sentence { font-size: 20px; }
  .typebox { font-size: 18px; }
  .cloze-prompt { font-size: 18px; }
  .cloze-choices { grid-template-columns: 1fr; }
  .control-select { min-width: 140px; max-width: 180px; }
  .keyboard { padding: 10px; overflow-x: auto; --key-unit: 46px; --key-height: 34px; }
  .keyboard-row { min-width: 860px; }
  .owner-form { grid-template-columns: 1fr; }
  .owner-filter-form { grid-template-columns: 1fr; }
  .owner-pagination { align-items: flex-start; }
  .owner-edit-grid { grid-template-columns: 1fr; }
  .owner-inline-grid { grid-template-columns: 1fr; align-items: stretch; }
  .summary-card.summary-card-wide {
    grid-column: span 1;
  }
  .summary-card.summary-card-double {
    grid-column: span 1;
  }
  .summary-card.summary-card-side-metrics {
    grid-column: span 1;
  }
  .cell-synonyms,
  .cell-examples {
    min-width: 180px;
  }
  .page-tab-list {
    gap: 6px;
    padding: 6px;
  }
  .page-tab-btn {
    flex: 1 1 calc(50% - 6px);
    justify-content: center;
    text-align: center;
  }
  .page-main-index .container {
    padding-bottom: 128px;
  }
  .page-main-index .home-footer {
    width: calc(100% - 16px);
    bottom: max(8px, env(safe-area-inset-bottom));
    padding: 10px 10px 8px;
  }
  .home-footer-links {
    justify-content: flex-start;
    gap: 10px 14px;
    padding: 0 4px;
  }
  .site-footer-inner {
    width: calc(100% - 16px);
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-height: 1300px) and (min-width: 1024px) {
  .hero {
    gap: 12px;
    align-items: start;
  }
  .review-card {
    padding: 14px;
  }
  .home-challenge-card {
    gap: 10px;
  }
  .home-challenge-head h2 {
    font-size: 16px;
  }
  .home-challenge-progress {
    gap: 8px;
  }
  .home-challenge-progress-value strong {
    font-size: 34px;
  }
  .home-challenge-progress-value span {
    font-size: 11px;
  }
  .home-challenge-summary {
    font-size: 14px;
    line-height: 1.45;
  }
  .home-challenge-metric-grid {
    gap: 8px;
  }
  .home-challenge-metric-card {
    padding: 10px;
    gap: 2px;
  }
  .home-challenge-metric-card strong {
    font-size: 16px;
  }
  .home-challenge-weak-keys {
    gap: 6px;
    padding-top: 4px;
  }
  .home-challenge-weak-keys .chart-head {
    gap: 6px;
  }
  .home-challenge-weak-keys .chart-head p {
    font-size: 12px;
  }
  .home-weak-key-list {
    gap: 6px;
  }
  .home-weak-key-chip {
    padding: 8px;
    gap: 2px;
  }
  .home-weak-key-chip strong {
    font-size: 16px;
  }
  .home-challenge-actions {
    gap: 6px;
  }
  .home-challenge-actions .btn {
    padding: 10px 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}