body.draw-tree-page {
  --dct-bg-primary: #8b0000;
  --dct-bg-step-card: rgba(255, 250, 240, 0.08);
  --dct-bg-step-hover: rgba(255, 250, 240, 0.12);
  --dct-bg-svg-area: rgba(8, 4, 3, 0.24);
  --dct-paper: rgba(255, 248, 239, 0.94);
  --dct-paper-soft: rgba(250, 239, 229, 0.9);
  --dct-paper-line: rgba(127, 84, 47, 0.1);
  --dct-paper-ink: #3f2416;
  --dct-gold: #ffd700;
  --dct-gold-soft: rgba(255, 215, 0, 0.16);
  --dct-text-primary: #ffffff;
  --dct-text-secondary: rgba(255, 255, 255, 0.82);
  --dct-text-muted: rgba(255, 255, 255, 0.5);
  --dct-easy: #78e08f;
  --dct-medium: #fdcb6e;
  --dct-hard: #ff7675;
  --dct-step-new: #ff6b6b;
  --dct-step-existing: rgba(255, 255, 255, 0.34);
  --dct-step-guide: rgba(255, 255, 255, 0.2);
  --dct-preview-surface:
    radial-gradient(circle at 18% 18%, rgba(255, 212, 92, 0.16), transparent 28%),
    linear-gradient(135deg, rgba(8, 24, 36, 0.92), rgba(20, 40, 28, 0.88));
}

body.draw-tree-page[data-dct-scheme="winter"] {
  --dct-preview-surface:
    radial-gradient(circle at 18% 18%, rgba(227, 242, 253, 0.2), transparent 28%),
    linear-gradient(135deg, rgba(230, 238, 244, 0.94), rgba(185, 204, 215, 0.92));
}

body.draw-tree-page[data-dct-scheme="cartoon"] {
  --dct-preview-surface:
    radial-gradient(circle at 18% 18%, rgba(255, 234, 137, 0.24), transparent 28%),
    linear-gradient(135deg, rgba(255, 253, 231, 0.96), rgba(255, 241, 179, 0.94));
}

.draw-tree-page .site {
  position: relative;
}

.dct-skip-link {
  position: absolute;
  left: 18px;
  top: -110px;
  z-index: 40;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--dct-gold);
  color: #2f1504;
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s ease;
}

.dct-skip-link:focus {
  top: 12px;
}

.dct-page-main {
  width: min(1280px, 100%);
  margin: 30px auto 0;
  display: grid;
  gap: 20px;
}

.dct-breadcrumb,
.dct-hero,
.dct-section-shell {
  width: min(1240px, 100%);
  margin: 0 auto;
}

.dct-breadcrumb {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 215, 0, 0.16);
  background: rgba(255, 244, 230, 0.1);
  color: #ffe7d1;
  font-size: 0.84rem;
}

.dct-breadcrumb a {
  color: inherit;
  text-decoration: none;
}

.dct-breadcrumb a:hover,
.dct-breadcrumb a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.dct-hero-shell,
.section-block.dct-section-shell {
  position: relative;
  overflow: hidden;
  border-radius: 34px;
  border: 1px solid rgba(255, 215, 0, 0.18);
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.22);
}

.dct-hero-shell {
  padding: 58px 42px 48px;
  background:
    radial-gradient(circle at 16% 18%, rgba(255, 214, 153, 0.16), transparent 32%),
    radial-gradient(circle at 86% 18%, rgba(255, 255, 255, 0.08), transparent 28%),
    linear-gradient(135deg, rgba(96, 17, 14, 0.98), rgba(44, 13, 10, 0.95));
}

.dct-hero-shell::before,
.section-block.dct-section-shell::before {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 26px;
  border: 1px dashed rgba(255, 248, 230, 0.15);
  pointer-events: none;
}

.dct-hero-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0, rgba(255, 255, 255, 0.03) 50%, transparent 100%),
    repeating-linear-gradient(
      180deg,
      transparent,
      transparent 28px,
      rgba(255, 255, 255, 0.03) 29px,
      rgba(255, 255, 255, 0.03) 30px
    );
  opacity: 0.2;
  pointer-events: none;
}

.dct-snowfall {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.dct-snowfall span {
  position: absolute;
  top: -20px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.8rem;
  animation: dct-fall linear infinite;
}

.dct-snowfall span:nth-child(1) {
  left: 4%;
  animation-duration: 10s;
  animation-delay: -2s;
}

.dct-snowfall span:nth-child(2) {
  left: 14%;
  animation-duration: 9s;
  animation-delay: -6s;
}

.dct-snowfall span:nth-child(3) {
  left: 25%;
  animation-duration: 12s;
  animation-delay: -3s;
}

.dct-snowfall span:nth-child(4) {
  left: 36%;
  animation-duration: 8s;
  animation-delay: -7s;
}

.dct-snowfall span:nth-child(5) {
  left: 48%;
  animation-duration: 11s;
  animation-delay: -4s;
}

.dct-snowfall span:nth-child(6) {
  left: 58%;
  animation-duration: 13s;
  animation-delay: -8s;
}

.dct-snowfall span:nth-child(7) {
  left: 69%;
  animation-duration: 9s;
  animation-delay: -1s;
}

.dct-snowfall span:nth-child(8) {
  left: 80%;
  animation-duration: 11s;
  animation-delay: -5s;
}

.dct-snowfall span:nth-child(9) {
  left: 89%;
  animation-duration: 10s;
  animation-delay: -3s;
}

.dct-snowfall span:nth-child(10) {
  left: 95%;
  animation-duration: 12s;
  animation-delay: -7s;
}

.dct-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(300px, 0.98fr);
  gap: 30px;
  align-items: start;
}

.dct-hero-copy {
  display: grid;
  gap: 16px;
}

.hero-badge,
.section-kicker,
.dct-card-eyebrow,
.dct-print-kicker {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 215, 0, 0.3);
  background: rgba(255, 215, 0, 0.12);
  color: var(--dct-gold);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.dct-hero-copy h1 {
  margin: 0;
  max-width: 12ch;
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(2.85rem, 6vw, 4.6rem);
  line-height: 0.98;
  color: #fff1de;
}

.dct-hero-subtitle {
  margin: 0;
  max-width: 22ch;
  font-family: "Instrument Serif", serif;
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  line-height: 1.06;
  color: rgba(255, 245, 231, 0.95);
}

.dct-hero-intro {
  width: min(760px, 100%);
  margin: 0;
  color: var(--dct-text-secondary);
  font-size: 1rem;
  line-height: 1.85;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
}

.hero-meta span {
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff3e0;
  font-size: 0.82rem;
  font-weight: 600;
}

.dct-hero-side {
  display: grid;
  gap: 16px;
}

.countdown-badge {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 4px;
  padding: 20px 18px;
  border-radius: 24px;
  border: 1px solid rgba(255, 215, 0, 0.24);
  background: rgba(255, 251, 246, 0.12);
  backdrop-filter: blur(10px);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
}

.countdown-badge .star {
  font-size: 1.4rem;
}

.countdown-badge-title,
.days-label {
  color: #ffe6ca;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.76rem;
  font-weight: 700;
}

.days-num {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(2.6rem, 6vw, 4rem);
  line-height: 1;
  color: var(--dct-gold);
}

.badge-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 215, 0, 0.32);
  color: var(--dct-gold);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 700;
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.badge-link:hover,
.badge-link:focus-visible {
  background: rgba(255, 215, 0, 0.12);
  border-color: rgba(255, 215, 0, 0.5);
  transform: translateY(-1px);
}

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

.dct-mini-sheet {
  position: relative;
  min-height: 170px;
  padding: 18px 16px 14px;
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.06)),
    rgba(255, 248, 240, 0.92);
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.18);
  overflow: hidden;
}

.dct-mini-sheet::before,
.paper-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.28), transparent),
    repeating-linear-gradient(
      180deg,
      transparent,
      transparent 24px,
      var(--dct-paper-line) 25px,
      var(--dct-paper-line) 26px
    );
  opacity: 0.55;
  pointer-events: none;
}

.dct-mini-sheet svg {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 120px;
}

.dct-mini-sheet-wide {
  grid-column: 1 / -1;
}

.dct-mini-label {
  position: relative;
  z-index: 1;
  display: inline-flex;
  margin-bottom: 10px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(70, 30, 18, 0.08);
  color: var(--dct-paper-ink);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-block.dct-section-shell {
  background:
    radial-gradient(circle at top left, rgba(255, 215, 0, 0.08), transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02)),
    rgba(46, 14, 11, 0.92);
  padding: 30px;
}

.section-header {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}

.section-header h2 {
  margin: 0;
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.55rem);
  line-height: 1.1;
  color: #fff1d8;
}

.section-subtitle {
  margin: 0;
  max-width: 74ch;
  color: var(--dct-text-secondary);
  font-size: 0.98rem;
  line-height: 1.8;
}

.paper-card {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.08)),
    var(--dct-paper);
  border: 1px solid rgba(122, 71, 43, 0.16);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  color: var(--dct-paper-ink);
}

.dct-studio-shell {
  display: grid;
  gap: 18px;
}

.dct-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.dct-tab {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 12px;
  min-width: min(100%, 320px);
  padding: 14px 16px;
  border-radius: 20px;
  border: 1px solid rgba(255, 215, 0, 0.18);
  background: rgba(255, 255, 255, 0.05);
  color: var(--dct-text-secondary);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.dct-tab:hover,
.dct-tab:focus-visible,
.dct-tab.active {
  transform: translateY(-1px);
  border-color: rgba(255, 215, 0, 0.42);
  background: rgba(255, 215, 0, 0.12);
  color: #fff7ee;
}

.dct-tab-icon {
  font-size: 1.15rem;
  line-height: 1;
  padding-top: 2px;
}

.dct-tab-copy {
  display: grid;
  gap: 4px;
}

.dct-tab-copy strong {
  font-size: 0.95rem;
}

.dct-tab-copy small,
.dct-tab-meta {
  color: inherit;
  font-size: 0.8rem;
}

.dct-tab-meta {
  grid-column: 1 / -1;
  opacity: 0.8;
}

.dct-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.dct-meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 13px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.11);
  color: var(--dct-text-secondary);
  font-size: 0.84rem;
  font-weight: 600;
}

.difficulty-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.difficulty-badge.easy {
  color: var(--dct-easy);
  background: rgba(120, 224, 143, 0.14);
  border: 1px solid rgba(120, 224, 143, 0.34);
}

.difficulty-badge.medium {
  color: var(--dct-medium);
  background: rgba(253, 203, 110, 0.14);
  border: 1px solid rgba(253, 203, 110, 0.34);
}

.difficulty-badge.hard {
  color: var(--dct-hard);
  background: rgba(255, 118, 117, 0.14);
  border: 1px solid rgba(255, 118, 117, 0.34);
}

.dct-overview-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.98fr) minmax(0, 1.02fr);
  gap: 22px;
  align-items: start;
}

.dct-overview-copy,
.dct-preview-card,
.dct-complete-card {
  padding: 26px;
}

.dct-overview-copy h3,
.dct-complete-card h3 {
  position: relative;
  z-index: 1;
  margin: 10px 0 0;
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(1.6rem, 2.6vw, 2rem);
  line-height: 1.12;
  color: #2d1b12;
}

.dct-overview-subtitle {
  position: relative;
  z-index: 1;
  margin: 10px 0 0;
  font-family: "Instrument Serif", serif;
  font-size: 1.24rem;
  line-height: 1.32;
  color: #58372b;
}

.dct-overview-summary,
.dct-what-box p,
.dct-complete-card p,
.dct-list,
.faq-answer p {
  position: relative;
  z-index: 1;
  margin: 14px 0 0;
  color: #5e4335;
  font-size: 0.96rem;
  line-height: 1.82;
}

.dct-what-box {
  position: relative;
  z-index: 1;
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.44);
  border: 1px solid rgba(118, 81, 50, 0.12);
}

.dct-what-box h4 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 800;
  color: #3f271b;
}

.dct-focus-list {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding-left: 18px;
  color: #4f3426;
}

.dct-progress-note {
  position: relative;
  z-index: 1;
  margin-top: 18px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(58, 33, 21, 0.08);
  border: 1px solid rgba(97, 61, 37, 0.1);
  color: #4d3124;
  font-size: 0.86rem;
  line-height: 1.7;
}

.dct-preview-head {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  align-items: start;
}

.dct-card-eyebrow {
  color: #8a5a27;
  border-color: rgba(158, 106, 38, 0.16);
  background: rgba(162, 96, 31, 0.08);
}

.dct-preview-head h3 {
  position: relative;
  z-index: 1;
  margin: 6px 0 0;
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: 1.6rem;
  color: #2c1b13;
}

.dct-print-btn,
.dct-action-btn,
.dct-toggle-btn,
.dct-scheme-preview-btn,
.nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid rgba(255, 215, 0, 0.22);
  background: rgba(255, 255, 255, 0.08);
  color: inherit;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.dct-print-btn,
.dct-action-btn.primary,
.dct-toggle-btn.active,
.dct-scheme-preview-btn:hover,
.dct-scheme-preview-btn:focus-visible,
.nav-btn:hover:not(:disabled),
.nav-btn:focus-visible:not(:disabled) {
  background: rgba(255, 215, 0, 0.12);
  border-color: rgba(255, 215, 0, 0.42);
  color: var(--dct-gold);
}

.dct-print-btn:hover,
.dct-print-btn:focus-visible,
.dct-action-btn:hover,
.dct-action-btn:focus-visible,
.dct-toggle-btn:hover,
.dct-toggle-btn:focus-visible {
  transform: translateY(-1px);
}

.dct-preview-stage {
  position: relative;
  z-index: 1;
  margin-top: 16px;
  padding: 18px;
  border-radius: 24px;
  background: var(--dct-preview-surface);
  border: 1px solid rgba(255, 215, 0, 0.14);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.dct-preview-shell {
  display: grid;
  gap: 12px;
}

.dct-preview-svg-wrap {
  position: relative;
  border-radius: 20px;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.18), transparent 30%),
    rgba(255, 255, 255, 0.06);
  min-height: 340px;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.dct-preview-svg-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 10%, rgba(255, 255, 255, 0.08), transparent 30%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 32px,
      rgba(255, 255, 255, 0.025) 33px,
      rgba(255, 255, 255, 0.025) 34px
    );
  pointer-events: none;
}

.dct-preview-svg-wrap svg {
  width: min(100%, 380px);
  height: auto;
}

.dct-preview-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.82rem;
}

.dct-preview-meta span {
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.dct-preview-caption {
  margin: 0;
  color: #f1e7d6;
  font-size: 0.92rem;
  line-height: 1.75;
}

.dct-toolbar-group {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.dct-toggle-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.dct-toggle-btn {
  color: #ffe8d4;
}

.dct-scheme-group .dct-toggle-btn {
  min-width: 112px;
}

.step-navigator {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 16px 20px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-btn {
  color: var(--dct-text-secondary);
}

.nav-btn:disabled {
  opacity: 0.34;
  cursor: not-allowed;
}

.dct-nav-center {
  display: grid;
  gap: 12px;
}

.dct-nav-status {
  display: grid;
  gap: 4px;
  justify-items: center;
  text-align: center;
}

.dct-nav-status strong {
  color: #fff4df;
  font-size: 1rem;
}

.dct-nav-status span {
  color: var(--dct-text-muted);
  font-size: 0.86rem;
}

.step-dots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

button.step-dot {
  width: 10px;
  height: 10px;
  padding: 0;
  border-radius: 999px;
  border: 0;
  background: rgba(255, 255, 255, 0.22);
  cursor: pointer;
  transition: width 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

button.step-dot:hover,
button.step-dot:focus-visible {
  transform: translateY(-1px);
}

button.step-dot.active {
  width: 28px;
  border-radius: 999px;
  background: var(--dct-gold);
}

button.step-dot.completed {
  background: rgba(120, 224, 143, 0.8);
}

.dct-steps {
  display: grid;
  gap: 24px;
}

.tutorial-step {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  background: var(--dct-bg-step-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  padding: 28px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.tutorial-step:hover {
  border-color: rgba(255, 215, 0, 0.26);
  transform: translateY(-1px);
}

.tutorial-step.active {
  border-color: rgba(255, 215, 0, 0.44);
  box-shadow: 0 0 0 1px rgba(255, 215, 0, 0.12), 0 14px 38px rgba(0, 0, 0, 0.24);
}

.step-svg-container {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.12), transparent 28%),
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.01),
      rgba(255, 255, 255, 0.01) 30px,
      rgba(255, 255, 255, 0.03) 31px,
      rgba(255, 255, 255, 0.03) 32px
    ),
    var(--dct-bg-svg-area);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
}

.step-svg-container::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 24px 24px, rgba(255, 255, 255, 0.04) 0 1.5px, transparent 1.5px),
    radial-gradient(circle at 92px 92px, rgba(255, 255, 255, 0.04) 0 1.5px, transparent 1.5px);
  background-size: 120px 120px;
  pointer-events: none;
}

.step-svg-container svg {
  position: relative;
  z-index: 1;
  width: 86%;
  height: 86%;
}

.animate-btn {
  position: absolute;
  right: 10px;
  bottom: 10px;
  z-index: 2;
  padding: 6px 11px;
  border-radius: 10px;
  border: 1px solid rgba(255, 215, 0, 0.35);
  background: rgba(255, 215, 0, 0.15);
  color: var(--dct-gold);
  font-size: 0.75rem;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.18s ease;
}

.animate-btn:hover,
.animate-btn:focus-visible {
  background: rgba(255, 215, 0, 0.24);
  transform: translateY(-1px);
}

.step-content {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.step-heading {
  display: flex;
  gap: 14px;
  align-items: start;
}

.step-number-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(255, 215, 0, 0.15);
  border: 2px solid rgba(255, 215, 0, 0.4);
  color: var(--dct-gold);
  font-size: 1rem;
  font-weight: 800;
}

.step-kicker {
  margin: 0 0 4px;
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.step-title {
  margin: 0;
  color: #ffffff;
  font-size: 1.24rem;
  line-height: 1.22;
}

.step-description {
  margin: 0;
  color: var(--dct-text-secondary);
  font-size: 0.95rem;
  line-height: 1.86;
}

.step-tip {
  margin: 0;
  padding: 12px 14px;
  border-left: 3px solid rgba(255, 215, 0, 0.5);
  border-radius: 0 10px 10px 0;
  background: rgba(255, 215, 0, 0.08);
  color: rgba(255, 228, 151, 0.96);
  font-size: 0.86rem;
  line-height: 1.75;
  font-style: italic;
}

.dct-complete-card {
  position: relative;
  z-index: 1;
}

.dct-complete-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.dct-action-btn {
  color: #4d3124;
  background: rgba(255, 255, 255, 0.4);
  border-color: rgba(120, 78, 44, 0.14);
}

.dct-action-btn.primary {
  color: var(--dct-gold);
}

.dct-scheme-grid,
.dct-worksheet-grid,
.related-grid {
  display: grid;
  gap: 18px;
}

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

.dct-scheme-card,
.dct-tip-card,
.dct-worksheet-card,
.related-card,
.faq-item {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03)),
    rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.14);
}

.dct-scheme-card {
  padding: 22px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.dct-scheme-card.active,
.dct-scheme-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 215, 0, 0.34);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.dct-scheme-head {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: start;
}

.dct-scheme-head h3,
.dct-tip-card h3,
.dct-worksheet-card h3,
.related-card-title {
  margin: 0;
  color: #fff4e5;
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: 1.2rem;
  line-height: 1.22;
}

.dct-scheme-head p,
.dct-mistake-item p,
.related-card-desc,
.dct-worksheet-card p,
.faq-answer p {
  margin: 10px 0 0;
  color: var(--dct-text-secondary);
  line-height: 1.8;
}

.dct-colour-swatches {
  display: flex;
  gap: 10px;
  margin: 18px 0;
}

.dct-colour-swatches span {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--swatch);
  border: 2px solid rgba(255, 255, 255, 0.26);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.14);
}

.table-wrap {
  overflow-x: auto;
  border-radius: 18px;
}

.dct-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}

.dct-table th,
.dct-table td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--dct-text-secondary);
  font-size: 0.9rem;
  text-align: left;
}

.dct-table th {
  color: #fff5ea;
  font-weight: 800;
}

.dct-mistakes-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.dct-tip-card,
.dct-worksheet-card {
  padding: 22px;
}

.dct-mistake-item + .dct-mistake-item {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.dct-mistake-item h4 {
  margin: 0;
  color: #fff3df;
  font-size: 1rem;
}

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

.dct-list {
  margin: 14px 0 0;
  padding-left: 18px;
}

.dct-list li + li {
  margin-top: 8px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  padding: 0;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  list-style: none;
  padding: 18px 20px;
  color: #fff3e3;
  font-weight: 800;
  cursor: pointer;
}

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

.faq-item summary::after {
  content: "+";
  color: var(--dct-gold);
  font-size: 1.4rem;
  line-height: 1;
  transition: transform 0.18s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 20px 20px;
}

.related-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.related-card {
  display: grid;
  gap: 12px;
  padding: 22px;
  color: inherit;
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.related-card:hover,
.related-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(255, 215, 0, 0.34);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.related-card-icon {
  font-size: 1.7rem;
}

.related-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--dct-gold);
  font-size: 0.86rem;
  font-weight: 700;
}

.related-card-cta::after {
  content: "→";
}

.dct-nojs {
  margin: 0;
  padding: 12px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--dct-text-secondary);
  line-height: 1.7;
}

.svg-path-animated {
  stroke-dasharray: var(--path-length);
  stroke-dashoffset: var(--path-length);
}

.svg-path-animated.playing {
  animation: drawPath 1.4s ease forwards;
}

.svg-new-lines,
.svg-existing-lines,
.svg-guide-lines {
  fill: none;
  vector-effect: non-scaling-stroke;
}

.svg-new-lines {
  stroke: var(--dct-step-new);
  stroke-width: 2.5;
}

.svg-existing-lines {
  stroke: var(--dct-step-existing);
  stroke-width: 1.7;
}

.svg-guide-lines {
  stroke: var(--dct-step-guide);
  stroke-width: 1.2;
  stroke-dasharray: 4 4;
}

.dct-toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 60;
  max-width: min(360px, calc(100vw - 36px));
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(29, 10, 8, 0.94);
  border: 1px solid rgba(255, 215, 0, 0.24);
  color: #fff0d8;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.dct-toast.show {
  opacity: 1;
  transform: translateY(0);
}

.dct-print-host {
  display: none;
}

.dct-print-sheet {
  color: #111111;
}

.worksheet-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.worksheet-cell {
  position: relative;
  min-height: 240px;
  border: 1px solid #cfcfcf;
  border-radius: 16px;
  padding: 14px;
  display: grid;
  align-items: center;
  background: #ffffff;
}

.worksheet-cell svg {
  width: 100%;
  height: auto;
}

.worksheet-cell-label {
  position: absolute;
  top: 10px;
  left: 12px;
  color: #777777;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.reference-sheet {
  display: grid;
  gap: 14px;
}

.reference-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 14px;
  align-items: stretch;
}

.reference-thumb,
.reference-practice {
  border: 1px solid #d4d4d4;
  border-radius: 16px;
  padding: 12px;
  background: #ffffff;
}

.reference-thumb span {
  display: inline-flex;
  margin-bottom: 10px;
  color: #666666;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.reference-thumb svg {
  width: 100%;
  height: auto;
}

.reference-practice h2 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.reference-box {
  min-height: 120px;
  border: 1px dashed #bababa;
  border-radius: 12px;
  background:
    repeating-linear-gradient(
      180deg,
      transparent,
      transparent 24px,
      rgba(0, 0, 0, 0.05) 25px,
      rgba(0, 0, 0, 0.05) 26px
    ),
    #fafafa;
}

.outline-sheet {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 18px;
  align-items: start;
}

.outline-hero,
.outline-notes {
  border: 1px solid #d4d4d4;
  border-radius: 18px;
  padding: 16px;
  background: #ffffff;
}

.outline-hero svg {
  width: 100%;
  height: auto;
}

.outline-notes h2 {
  margin: 0;
  font-size: 1.1rem;
}

.outline-notes ul {
  margin: 14px 0 0;
  padding-left: 18px;
  line-height: 1.8;
}

.outline-lines {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.outline-lines span {
  display: block;
  border-bottom: 1px solid #c7c7c7;
  height: 18px;
}

.dct-print-header h1 {
  margin: 8px 0 10px;
  font-size: 2rem;
  line-height: 1.1;
}

.dct-print-header p,
.dct-print-footer {
  margin: 0;
  color: #333333;
  font-size: 0.92rem;
  line-height: 1.7;
}

.dct-print-footer {
  margin-top: 16px;
}

@keyframes dct-fall {
  0% {
    transform: translateY(0) translateX(0);
    opacity: 0;
  }

  10%,
  85% {
    opacity: 1;
  }

  100% {
    transform: translateY(360px) translateX(18px);
    opacity: 0;
  }
}

@keyframes drawPath {
  to {
    stroke-dashoffset: 0;
  }
}

@media (max-width: 1160px) {
  .dct-hero-grid,
  .dct-overview-grid,
  .dct-mistakes-grid,
  .outline-sheet {
    grid-template-columns: 1fr;
  }

  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .dct-scheme-grid,
  .dct-worksheet-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .tutorial-step,
  .reference-row {
    grid-template-columns: 1fr;
  }

  .step-navigator {
    grid-template-columns: 1fr;
  }

  .nav-btn {
    width: 100%;
  }
}

@media (max-width: 760px) {
  .dct-page-main {
    margin-top: 22px;
  }

  .dct-hero-shell,
  .section-block.dct-section-shell {
    padding: 24px 18px;
  }

  .countdown-badge {
    width: 100%;
    max-width: none;
  }

  .dct-hero-board {
    grid-template-columns: 1fr;
  }

  .dct-mini-sheet-wide {
    grid-column: auto;
  }

  .dct-tab {
    width: 100%;
  }

  .dct-preview-svg-wrap {
    min-height: 280px;
  }

  .worksheet-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .dct-breadcrumb {
    border-radius: 18px;
  }

  .dct-hero-shell {
    padding: 40px 20px 30px;
  }

  .dct-overview-copy,
  .dct-preview-card,
  .dct-complete-card,
  .dct-scheme-card,
  .dct-tip-card,
  .dct-worksheet-card,
  .related-card {
    padding-left: 16px;
    padding-right: 16px;
  }

  .step-svg-container {
    padding: 10px;
  }

  .step-svg-container svg {
    width: 92%;
    height: 92%;
  }

  .tutorial-step {
    padding: 20px;
  }

  .dct-table th,
  .dct-table td {
    padding: 10px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .dct-snowfall span,
  .svg-path-animated.playing,
  .dct-toast,
  .dct-tab,
  .dct-print-btn,
  .dct-action-btn,
  .dct-toggle-btn,
  .nav-btn,
  .related-card,
  .dct-scheme-card,
  .tutorial-step {
    animation: none !important;
    transition: none !important;
  }
}

@media print {
  body.draw-tree-page {
    background: #ffffff !important;
    color: #000000 !important;
  }

  body.draw-tree-page * {
    visibility: hidden !important;
  }

  body.draw-tree-page.printing-worksheet .dct-print-host,
  body.draw-tree-page.printing-worksheet .dct-print-host * {
    visibility: visible !important;
  }

  body.draw-tree-page.printing-worksheet .dct-print-host {
    display: block !important;
    position: static;
    margin: 0;
    padding: 0;
  }

  .dct-print-sheet {
    padding: 16px 0 28px;
    page-break-inside: avoid;
  }

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

  .reference-row,
  .outline-sheet {
    grid-template-columns: 1fr;
  }

  .dct-print-header h1 {
    font-size: 24px;
  }

  .dct-print-header p,
  .dct-print-footer,
  .reference-practice h2,
  .outline-notes li {
    font-size: 12px;
  }

  .reference-box {
    min-height: 100px;
  }
}