/* ============================================================
   GLOBAL RESET & VARIABLES
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #0a0e1a;
  --color-surface: #111827;
  --color-surface2: #1a2236;
  --color-border: rgba(255, 255, 255, 0.08);

  --color-primary: #4f8ef7;
  --color-primary-dark: #2563eb;
  --color-accent: #10dbb4;
  --color-gold: #f59e0b;
  --color-danger: #ef4444;
  --color-green: #22c55e;
  --color-orange: #f97316;
  --color-purple: #8b5cf6;

  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-text-faint: #475569;

  --gradient-hero: linear-gradient(135deg, #0a0e1a 0%, #0f172a 50%, #1a1040 100%);
  --gradient-primary: linear-gradient(135deg, #4f8ef7, #10dbb4);
  --gradient-gold: linear-gradient(135deg, #f59e0b, #fbbf24);
  --gradient-danger: linear-gradient(135deg, #ef4444, #f97316);
  --gradient-green: linear-gradient(135deg, #22c55e, #10dbb4);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow-primary: 0 0 30px rgba(79, 142, 247, 0.25);
  --shadow-glow-accent: 0 0 30px rgba(16, 219, 180, 0.2);

  --font-body: 'Noto Sans TC', sans-serif;
  --font-heading: 'Outfit', 'Noto Sans TC', sans-serif;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s ease;
  --transition-slow: 0.6s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); }
h4 { font-size: 1rem; font-weight: 600; }

p { color: var(--color-text-muted); }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-accent); }

strong { color: var(--color-text); }

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
  position: relative;
}

.alt-bg {
  background-color: var(--color-surface);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header p {
  margin-top: 0.75rem;
  font-size: 1.05rem;
}

.section-tag {
  display: inline-block;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--gradient-primary);
  z-index: 9999;
  transition: width 0.1s linear;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  transition: background var(--transition-normal), backdrop-filter var(--transition-normal), box-shadow var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text);
}

.nav-icon { font-size: 1.3rem; }

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}

.nav-link {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0.9rem;
  border-radius: 50px;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.08);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
  padding: 6rem 1.5rem 4rem;
}

.hero-bg-orbs {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: float 8s ease-in-out infinite;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #4f8ef7, transparent 70%);
  top: -100px;
  left: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #10dbb4, transparent 70%);
  bottom: -50px;
  right: -80px;
  animation-delay: -3s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, #8b5cf6, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -6s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero-badge {
  display: inline-block;
  border: 1px solid rgba(79, 142, 247, 0.4);
  border-radius: 50px;
  padding: 0.35rem 1.1rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 1.25rem;
  background: rgba(79, 142, 247, 0.08);
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  color: #fff;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: var(--font-heading);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
  text-decoration: none;
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(79, 142, 247, 0.35);
}
.btn-primary:hover {
  box-shadow: 0 8px 30px rgba(79, 142, 247, 0.5);
  filter: brightness(1.08);
  color: #fff;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.07);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-text);
}

/* ============================================================
   SCROLL INDICATOR
   ============================================================ */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-dot {
  width: 20px;
  height: 34px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 10px;
  position: relative;
}

.scroll-dot::after {
  content: '';
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: scrollDot 2s ease-in-out infinite;
}

@keyframes scrollDot {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(14px); }
}

/* ============================================================
   REVEAL ANIMATION
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   INSTRUCTOR SECTION
   ============================================================ */
.instructor-section {
  padding: 3.5rem 0;
}

.instructor-card {
  display: flex;
  align-items: center;
  gap: 2rem;
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-normal);
}

.instructor-card:hover {
  box-shadow: var(--shadow-glow-primary);
}

.instructor-avatar {
  flex-shrink: 0;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.instructor-info h2 {
  font-size: 1.5rem;
  margin: 0.25rem 0 0.75rem;
}

.instructor-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.tag {
  background: rgba(79, 142, 247, 0.12);
  color: var(--color-primary);
  border: 1px solid rgba(79, 142, 247, 0.25);
  border-radius: 50px;
  padding: 0.2rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
}

/* ============================================================
   TOC GRID
   ============================================================ */
.toc-section {
  background: var(--color-surface);
}

.toc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.toc-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  text-decoration: none;
  color: var(--color-text);
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.toc-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.toc-card:hover {
  border-color: rgba(79, 142, 247, 0.4);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-primary);
  color: var(--color-text);
}

.toc-card:hover::before { opacity: 0.05; }

.toc-number {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  position: relative;
}

.toc-icon {
  font-size: 1.75rem;
  flex-shrink: 0;
  position: relative;
}

.toc-content {
  flex: 1;
  position: relative;
}

.toc-content h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  color: var(--color-text);
}

.toc-content p {
  font-size: 0.8rem;
  color: var(--color-text-faint);
}

.toc-arrow {
  color: var(--color-text-faint);
  font-size: 1rem;
  transition: transform var(--transition-fast), color var(--transition-fast);
  position: relative;
}

.toc-card:hover .toc-arrow {
  transform: translateX(4px);
  color: var(--color-primary);
}

/* ============================================================
   INFO CARDS (3-col)
   ============================================================ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.info-card {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.info-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card-green::after { background: var(--gradient-green); }
.card-blue::after  { background: var(--gradient-primary); }
.card-orange::after { background: var(--gradient-danger); }

.info-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
}

.info-card:hover::after { opacity: 1; }

.card-icon {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

.info-card h3 {
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

.card-subtitle {
  font-size: 0.8rem;
  color: var(--color-primary);
  font-style: italic;
  margin-bottom: 0.75rem !important;
}

.info-card p { font-size: 0.95rem; }

/* ============================================================
   COMPARE GRID (Scout vs Rover)
   ============================================================ */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: center;
}

.compare-card {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition-normal);
}

.compare-card.scout {
  border-color: rgba(34, 197, 94, 0.2);
}
.compare-card.scout:hover {
  box-shadow: 0 0 25px rgba(34, 197, 94, 0.15);
}

.compare-card.rover {
  border-color: rgba(139, 92, 246, 0.2);
}
.compare-card.rover:hover {
  box-shadow: 0 0 25px rgba(139, 92, 246, 0.15);
}

.compare-badge {
  display: inline-block;
  padding: 0.3rem 0.85rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.scout .compare-badge {
  background: rgba(34, 197, 94, 0.12);
  color: var(--color-green);
  border: 1px solid rgba(34, 197, 94, 0.25);
}

.rover .compare-badge {
  background: rgba(139, 92, 246, 0.12);
  color: var(--color-purple);
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.compare-icon {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
  display: block;
}

.compare-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.list-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 0.55rem;
}

.scout .list-dot { background: var(--color-green); }
.rover .list-dot { background: var(--color-purple); }

.compare-divider {
  display: flex;
  align-items: center;
  justify-content: center;
}

.vs-circle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 0.85rem;
  color: #fff;
  box-shadow: var(--shadow-glow-primary);
}

/* ============================================================
   ACCORDION
   ============================================================ */
.subsection {
  margin-top: 2.5rem;
}

.subsection-title {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-bottom: 1.25rem;
  padding-left: 1rem;
  border-left: 3px solid var(--color-primary);
}

.accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.accordion-item {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: left;
  transition: background var(--transition-fast);
}

.accordion-header:hover { background: rgba(255,255,255,0.03); }

.accordion-header[aria-expanded="true"] {
  border-bottom: 1px solid var(--color-border);
}

.acc-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: #fff;
  font-weight: 700;
}

.acc-title { flex: 1; }

.acc-icon {
  color: var(--color-text-faint);
  font-size: 1.25rem;
  font-weight: 300;
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.accordion-header[aria-expanded="true"] .acc-icon {
  transform: rotate(45deg);
  color: var(--color-primary);
}

.accordion-body {
  padding: 1.25rem 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  animation: slideDown 0.3s ease;
}

.accordion-body ul {
  list-style: none;
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.accordion-body ul li::before {
  content: '▸ ';
  color: var(--color-accent);
}

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

/* ============================================================
   PHASE FLOW
   ============================================================ */
.phase-flow {
  display: flex;
  align-items: center;
  gap: 0;
}

.phase-card {
  flex: 1;
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
  transition: box-shadow var(--transition-normal);
}

.phase-card:hover { box-shadow: var(--shadow-glow-primary); }

.phase-icon { font-size: 2.5rem; margin-bottom: 0.5rem; }

.phase-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.phase-card h4 {
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.phase-arrow {
  font-size: 1.5rem;
  color: var(--color-primary);
  padding: 0 1rem;
  flex-shrink: 0;
}

/* ============================================================
   PLAN GRID
   ============================================================ */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.plan-item {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.plan-item:hover {
  transform: translateY(-3px);
  border-color: rgba(79, 142, 247, 0.3);
}

.plan-icon { font-size: 2rem; margin-bottom: 0.75rem; }

.plan-item h4 {
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.plan-item p { font-size: 0.85rem; }

/* ============================================================
   CHALLENGE CARDS
   ============================================================ */
.challenge-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.challenge-card {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  cursor: default;
}

.challenge-card:hover {
  transform: translateY(-5px);
  border-color: rgba(79, 142, 247, 0.4);
  box-shadow: var(--shadow-glow-primary);
}

.challenge-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }

.challenge-card h4 {
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.challenge-distance {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.challenge-note {
  font-size: 0.78rem;
  color: var(--color-text-faint);
  margin-top: 0.4rem;
}

/* LNT Banner */
.lnt-banner {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: rgba(34, 197, 94, 0.07);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-top: 1.5rem;
}

.lnt-icon { font-size: 2rem; flex-shrink: 0; }

.lnt-content strong {
  display: block;
  color: var(--color-green);
  margin-bottom: 0.35rem;
}

.lnt-content p { font-size: 0.9rem; }

/* ============================================================
   CONCLUSION CARDS
   ============================================================ */
.conclusion-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.conclusion-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: border-color var(--transition-fast);
}

.conclusion-item:hover { border-color: rgba(79, 142, 247, 0.35); }

.conclusion-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.conclusion-item h4 {
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

/* ============================================================
   GUIDE SECTION
   ============================================================ */
.guide-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.guide-role-card,
.guide-resource-card {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: box-shadow var(--transition-normal);
}

.guide-role-card:hover,
.guide-resource-card:hover {
  box-shadow: var(--shadow-glow-primary);
}

.guide-icon { font-size: 2.5rem; margin-bottom: 1rem; }

.guide-role-card h3,
.guide-resource-card h3 {
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

.role-desc {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.role-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
}

.role-item.good {
  background: rgba(34, 197, 94, 0.07);
  border: 1px solid rgba(34, 197, 94, 0.15);
}

.role-item.bad {
  background: rgba(239, 68, 68, 0.07);
  border: 1px solid rgba(239, 68, 68, 0.15);
}

.role-badge {
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.role-item.good .role-badge { color: var(--color-green); }
.role-item.bad  .role-badge { color: var(--color-danger); }

.resource-item { color: var(--color-text-muted); }

.resource-org {
  font-size: 0.75rem;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.2rem;
}

.resource-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.resource-sub {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.resource-link {
  display: inline-block;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid rgba(16, 219, 180, 0.3);
  padding-bottom: 0.1rem;
  transition: border-color var(--transition-fast);
}

.resource-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ============================================================
   DIFF TABLE
   ============================================================ */
.compare-table-wrap { overflow-x: auto; }

.diff-table {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.diff-header,
.diff-row {
  display: grid;
  grid-template-columns: 160px 1fr 1fr;
}

.diff-header {
  background: rgba(79, 142, 247, 0.1);
  font-weight: 700;
  font-size: 0.9rem;
}

.diff-row {
  border-top: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

.diff-row:hover { background: rgba(255,255,255,0.02); }

.diff-col {
  padding: 0.9rem 1.25rem;
  font-size: 0.88rem;
}

.diff-label {
  color: var(--color-text-muted);
  font-weight: 600;
  border-right: 1px solid var(--color-border);
}

.diff-city { color: var(--color-green); }
.diff-wild { color: var(--color-orange); }

/* ============================================================
   RESCUE CARDS
   ============================================================ */
.rescue-section { margin-top: 2.5rem; }

.rescue-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.25rem;
}

.rescue-card {
  background: rgba(239, 68, 68, 0.07);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  text-align: center;
  transition: box-shadow var(--transition-normal);
}

.rescue-card:hover { box-shadow: 0 0 20px rgba(239, 68, 68, 0.15); }

.rescue-num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-danger);
  margin-bottom: 0.5rem;
}

.rescue-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.rescue-desc { font-size: 0.9rem; color: var(--color-text-muted); }

/* ============================================================
   FLOW STEPS
   ============================================================ */
.flow-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 1.5rem;
}

.flow-step {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.flow-step:hover {
  border-color: rgba(79, 142, 247, 0.35);
  box-shadow: var(--shadow-glow-primary);
}

.flow-connector {
  width: 2px;
  height: 20px;
  background: var(--color-border);
  margin-left: 2.25rem;
}

.step-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
}

.step-content h4 {
  color: var(--color-text);
  margin-bottom: 0.2rem;
}

.step-content p { font-size: 0.88rem; }

/* DANGER ALERT */
.danger-alert {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: rgba(239, 68, 68, 0.07);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
}

.danger-icon { font-size: 2rem; flex-shrink: 0; }

.danger-content strong { color: var(--color-danger); }

.danger-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.danger-tag {
  background: rgba(239, 68, 68, 0.12);
  color: var(--color-danger);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: 50px;
  padding: 0.2rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
}

/* ============================================================
   BLS GRID
   ============================================================ */
.bls-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr 1fr;
  gap: 1.25rem;
  align-items: start;
}

.bls-card {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
}

.bls-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow-primary);
}

.bls-card.featured {
  border-color: rgba(239, 68, 68, 0.3);
  background: linear-gradient(135deg, rgba(239,68,68,0.07), var(--color-surface2));
}

.bls-card.featured:hover {
  box-shadow: 0 0 30px rgba(239, 68, 68, 0.2);
}

.bls-badge {
  position: absolute;
  top: -1px;
  right: 1.25rem;
  background: var(--gradient-danger);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.7rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.bls-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }

.bls-card h3 {
  color: var(--color-text);
  margin-bottom: 1rem;
}

.bls-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.bls-card ul li {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding-left: 1rem;
  position: relative;
}

.bls-card ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.cpr-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.cpr-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-align: center;
}

.cpr-letter {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-danger);
}

.cpr-letter.aed {
  font-size: 1.1rem;
  color: var(--color-gold);
}

.bls-note {
  font-size: 0.8rem;
  color: var(--color-text-faint);
  text-align: center;
}

/* ============================================================
   RISK GRID
   ============================================================ */
.risk-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.risk-card {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.risk-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-primary);
}

.risk-card.wide {
  grid-column: 1 / -1;
}

.risk-icon { font-size: 2rem; margin-bottom: 0.75rem; }

.risk-card h3 {
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.risk-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.risk-card ul li {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding-left: 1rem;
  position: relative;
}

.risk-card ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.risk-tags-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.env-risk {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(249, 115, 22, 0.08);
  border: 1px solid rgba(249, 115, 22, 0.2);
  border-radius: 50px;
  padding: 0.35rem 0.9rem;
  font-size: 0.88rem;
  color: var(--color-orange);
  font-weight: 600;
}

.env-icon { font-size: 1rem; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 0;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text);
}

.footer-logo { font-size: 1.3rem; }

.footer-copy { font-size: 0.85rem; }

.back-top {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border: 1px solid rgba(79, 142, 247, 0.25);
  border-radius: 50px;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.back-top:hover {
  background: rgba(79, 142, 247, 0.08);
  border-color: rgba(79, 142, 247, 0.5);
  color: var(--color-primary);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .compare-grid {
    grid-template-columns: 1fr;
  }
  .compare-divider { justify-content: center; }
  .vs-circle { margin: 0 auto; }
  .bls-grid {
    grid-template-columns: 1fr;
  }
  .guide-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .navbar { padding: 0.85rem 1.25rem; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 1rem;
    gap: 0.25rem;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links.open { display: flex; }

  .hamburger { display: flex; }

  .phase-flow { flex-direction: column; }
  .phase-arrow { transform: rotate(90deg); }

  .rescue-cards { grid-template-columns: 1fr; }
  .risk-grid { grid-template-columns: 1fr; }
  .risk-card.wide { grid-column: 1; }

  .diff-header,
  .diff-row {
    grid-template-columns: 120px 1fr 1fr;
  }

  .footer-content { flex-direction: column; text-align: center; }
}


@media (max-width: 540px) {
  .toc-grid { grid-template-columns: 1fr; }
  .plan-grid { grid-template-columns: 1fr 1fr; }
  .challenge-cards { grid-template-columns: 1fr; }
  .diff-header, .diff-row { grid-template-columns: 1fr; }
  .diff-label { border-right: none; border-bottom: 1px solid var(--color-border); font-weight: 700; color: var(--color-primary); }
}

/* ============================================================
   @MEDIA PRINT — PDF 列印樣式

   ============================================================ */
@media print {
  /* 保留背景色彩 */
  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    animation: none !important;
    transition: none !important;
  }

  /* 讓所有 reveal 元素直接可見 */
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  /* 隱藏互動性元件 */
  .progress-bar,
  .scroll-indicator,
  #navbar,
  .hero-actions,
  .hamburger,
  .toc-arrow,
  #back-top-btn { display: none !important; }

  /* 字體大小調整 */
  body { font-size: 10pt; }
  h2 { font-size: 16pt !important; }
  h3 { font-size: 13pt !important; }
  h4 { font-size: 11pt !important; }

  /* Hero 區塊 */
  .hero {
    min-height: auto !important;
    height: 240pt !important;
    padding: 40pt 24pt 30pt !important;
    page-break-after: always;
    break-after: page;
  }

  .hero-title { font-size: 28pt !important; }
  .hero-subtitle { font-size: 11pt !important; margin-bottom: 0 !important; }

  /* 隱藏導覽列 */
  #navbar { display: none !important; }

  /* Section 間距縮小 */
  .section { padding: 20pt 0 !important; }
  .instructor-section { padding: 16pt 0 !important; }

  /* 分頁控制 */
  .toc-section { page-break-after: always; break-after: page; }
  #design, #badge, #standard { page-break-after: always; break-after: page; }
  #guide, #firstaid, #bls { page-break-after: always; break-after: page; }

  /* 避免卡片內部被截斷 */
  .info-card, .toc-card, .compare-card, .bls-card,
  .risk-card, .phase-card, .plan-item, .challenge-card,
  .conclusion-item, .accordion-item {
    page-break-inside: avoid;
    break-inside: avoid;
  }

  /* 手風琴展開全部 */
  .accordion-body { display: block !important; height: auto !important; }
  .accordion-header[aria-expanded="false"] {
    border-bottom: 1px solid rgba(255,255,255,0.1) !important;
  }
  .acc-icon { display: none !important; }

  /* 表格列印 */
  .diff-table { font-size: 9pt; }

  /* 連結顯示網址 */
  .resource-link::after {
    content: " (" attr(href) ")";
    font-size: 8pt;
    color: #94a3b8;
    word-break: break-all;
  }

  /* Footer */
  .footer { page-break-before: avoid; break-before: avoid; }
}