:root {
  --bg1: #fff7cc;
  --bg2: #ffe7f3;
  --bg3: #e8f7ff;
  --panel: rgba(255, 255, 255, 0.86);
  --panel-strong: rgba(255, 255, 255, 0.96);
  --text: #17324d;
  --muted: #51657d;
  --accent: #ff4fa3;
  --accent-2: #34b6ff;
  --accent-3: #ffbf2f;
  --border: rgba(23, 50, 77, 0.12);
  --shadow: 0 18px 40px rgba(29, 55, 89, 0.12);
  --radius: 20px;
  --maxw: 1280px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", Inter, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 79, 163, 0.22), transparent 28%),
    radial-gradient(circle at top right, rgba(52, 182, 255, 0.24), transparent 26%),
    radial-gradient(circle at bottom left, rgba(255, 191, 47, 0.18), transparent 24%),
    linear-gradient(135deg, var(--bg1), var(--bg2) 52%, var(--bg3));
  min-height: 100vh;
}

a {
  color: #0f5fd8;
  text-decoration: none;
}

a:hover { text-decoration: underline; }

.page-nav {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.page-nav a {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: background 0.15s ease, transform 0.12s ease;
}

.page-nav a:hover {
  background: rgba(255,255,255,0.95);
  transform: translateY(-1px);
  text-decoration: none;
}

.page-nav a.active {
  color: white;
  background: linear-gradient(135deg, var(--accent), #ff7b54);
  border-color: transparent;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 28px 20px 60px;
}

.hero {
  background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.75));
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  padding: 28px 28px 22px;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.hero h1 {
  margin: 0 0 8px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 1.02rem;
  max-width: 960px;
  line-height: 1.5;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  color: white;
  background: linear-gradient(135deg, var(--accent), #ff7b54);
  box-shadow: 0 10px 24px rgba(255, 79, 163, 0.22);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(255, 79, 163, 0.25);
  text-decoration: none;
}

.btn.secondary {
  background: linear-gradient(135deg, var(--accent-2), #6a7cff);
  box-shadow: 0 10px 24px rgba(52, 182, 255, 0.22);
}

.btn.secondary:hover {
  box-shadow: 0 14px 28px rgba(52, 182, 255, 0.25);
}

.btn.ghost {
  background: white;
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}

.layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 22px;
  align-items: start;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.panel-inner {
  padding: 18px;
}

.panel h2 {
  margin: 0 0 6px;
  font-size: 1.15rem;
}

.panel .sub {
  color: var(--muted);
  margin-bottom: 16px;
  font-size: 0.95rem;
  line-height: 1.45;
}

.toc {
  position: sticky;
  top: 18px;
}

.toc-list {
  display: grid;
  gap: 12px;
  max-height: calc(100vh - 80px);
  overflow: auto;
  padding-right: 4px;
}

.toc-list::-webkit-scrollbar,
.main::-webkit-scrollbar {
  width: 10px;
}

.toc-list::-webkit-scrollbar-thumb,
.main::-webkit-scrollbar-thumb {
  background: rgba(23, 50, 77, 0.16);
  border-radius: 999px;
}

details.toc-item {
  border: 1px solid rgba(23, 50, 77, 0.1);
  background: rgba(255,255,255,0.72);
  border-radius: 16px;
  overflow: hidden;
}

details.toc-item[open] {
  background: rgba(255,255,255,0.94);
  box-shadow: 0 10px 22px rgba(23, 50, 77, 0.08);
}

summary.toc-summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 14px 14px 16px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
}

summary.toc-summary::-webkit-details-marker {
  display: none;
}

.arrow {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(52,182,255,0.18), rgba(255,79,163,0.18));
  border: 1px solid rgba(23, 50, 77, 0.08);
  font-size: 0.95rem;
  transition: transform 0.2s ease;
}

details[open] .arrow {
  transform: rotate(90deg);
}

.toc-number {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.toc-title {
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.2;
}

.toc-jump {
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
}

.toc-hints {
  padding: 0 16px 16px 54px;
  display: grid;
  gap: 8px;
}

.toc-hints div {
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.35;
  position: relative;
  padding-left: 16px;
}

.toc-hints div::before {
  content: "↳";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent-2);
  font-weight: 900;
}

.main {
  display: grid;
  gap: 18px;
}

.card {
  background: var(--panel-strong);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 22px 22px 18px;
  scroll-margin-top: 20px;
}

.card-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.card-header h3 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.pill {
  flex-shrink: 0;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 8px 10px;
  color: #8a3d00;
  background: linear-gradient(135deg, #fff0be, #ffd86b);
  border: 1px solid rgba(138,61,0,0.12);
}

.card p {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.5;
}

.practice-row {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.mode-switch {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: sticky;
  top: 10px;
}

.mode-btn {
  width: 100%;
  text-align: left;
  border: 1px solid rgba(23, 50, 77, 0.12);
  background: white;
  color: var(--text);
  border-radius: 14px;
  padding: 10px 12px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease, color 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}

.mode-btn:hover {
  transform: translateX(2px);
  box-shadow: 0 8px 18px rgba(23, 50, 77, 0.08);
}

.mode-btn.active {
  color: white;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
}

.mode-btn .mode-kicker {
  display: block;
  font-size: 0.72rem;
  opacity: 0.82;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.mode-btn .mode-name {
  display: block;
}

.content-stack {
  min-width: 0;
}

.view-panel {
  display: none;
  border: 1px solid rgba(23, 50, 77, 0.08);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(248,252,255,0.95));
  padding: 14px 14px 14px 16px;
}

.view-panel.active {
  display: block;
}

.layer-title {
  font-size: 0.86rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  color: #5f7088;
}

.topline {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
}

.hint-grid {
  display: grid;
  gap: 8px;
}

.hint {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.45;
}

.hint::before {
  content: "→";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: 900;
}

ul.clean {
  margin: 0;
  padding-left: 18px;
}

ul.clean li {
  margin: 6px 0;
  line-height: 1.45;
}

.script-box {
  margin: 0;
  white-space: pre-wrap;
  line-height: 1.58;
  color: var(--text);
  font-size: 0.99rem;
  font-family: "Segoe UI", Inter, Arial, sans-serif;
}

.section-links {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.full-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 0.96rem;
  color: #0f5fd8;
}

.footer-note {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.92rem;
  text-align: center;
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
  }

  .toc-list {
    max-height: none;
    overflow: visible;
  }

  .practice-row {
    grid-template-columns: 1fr;
  }

  .mode-switch {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .mode-btn {
    text-align: center;
  }

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

@media (max-width: 640px) {
  .wrap {
    padding: 12px 10px 32px;
  }

  .page-nav {
    gap: 6px;
  }

  .page-nav a {
    padding: 6px 12px;
    font-size: 0.8rem;
  }

  .hero {
    padding: 16px 14px 14px;
    border-radius: 18px;
  }

  .hero h1 {
    font-size: 1.5rem;
  }

  .hero p {
    font-size: 0.9rem;
  }

  .card {
    padding: 16px 14px 14px;
    border-radius: 16px;
  }

  .toolbar {
    gap: 6px;
  }

  .toolbar .btn {
    padding: 8px 12px;
    font-size: 0.82rem;
  }

  summary.toc-summary {
    grid-template-columns: auto 1fr;
    padding: 10px 10px 10px 12px;
    gap: 8px;
  }

  .toc-jump {
    grid-column: 2 / 3;
  }

  .toc-hints {
    padding: 0 12px 12px 40px;
  }

  .mode-switch {
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
  }

  .mode-btn {
    padding: 8px 4px;
    font-size: 0.78rem;
    text-align: center;
    border-radius: 10px;
  }

  .mode-btn .mode-kicker {
    display: none;
  }

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

  .pill {
    font-size: 0.7rem;
    padding: 6px 8px;
  }

  .card p {
    font-size: 0.9rem;
  }

  .script-box {
    font-size: 0.88rem;
  }

  .view-panel {
    padding: 10px 12px;
  }

  .full-script-panel {
    border-radius: 14px;
  }

  .full-script-overlay {
    padding: 10px;
  }

  .full-script-toolbar {
    padding: 14px 16px;
  }

  .full-script-body {
    padding: 16px;
  }
}

.full-script-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(23, 50, 77, 0.5);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  padding: 24px;
}

.full-script-panel {
  background: white;
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(23, 50, 77, 0.25);
  max-width: 800px;
  width: 100%;
  max-height: calc(100vh - 48px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.full-script-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}

.full-script-toolbar h2 {
  margin: 0;
  font-size: 1.2rem;
}

.full-script-body {
  overflow-y: auto;
  padding: 22px;
}

.full-script-section {
  margin-bottom: 28px;
}

.full-script-section:last-child {
  margin-bottom: 0;
}

.full-script-heading {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}