:root {
  --bg: #050a0f;
  --bg2: #080f18;
  --panel: #0a1628;
  --panel2: #0d1e35;
  --panel3: #0f2540;
  --border: #1a3a5c;
  --border-bright: #0077ff;
  --accent: #00d4ff;
  --accent2: #ff6b00;
  --accent3: #00ff9d;
  --danger: #ff2d2d;
  --warn: #ffb300;
  --purple: #b44fff;
  --teal: #00e5cc;
  --text: #b8d4e8;
  --text-dim: #4a6a8a;
  --text-bright: #e8f4ff;
  --mono: 'Share Tech Mono', monospace;
  --display: 'Orbitron', monospace;
  --body: 'Rajdhani', sans-serif;
  --radius: 6px;
  --shadow: 0 8px 32px rgba(0,119,255,0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,212,255,0.012) 2px, rgba(0,212,255,0.012) 4px);
  pointer-events: none;
  z-index: 9999;
}

/* ─── HEADER ─────────────────────────────────────── */
.site-header {
  background: linear-gradient(180deg, #020810 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  overflow: hidden;
}

.header-ticker {
  background: rgba(0,212,255,0.05);
  border-bottom: 1px solid rgba(0,212,255,0.1);
  padding: 4px 32px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  display: flex;
  gap: 32px;
  overflow: hidden;
}

.ticker-item { white-space: nowrap; }
.ticker-item .t-hot { color: var(--danger); }
.ticker-item .t-ok  { color: var(--accent3); }
.ticker-item .t-warn { color: var(--warn); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 32px;
  gap: 16px;
}

.header-logo { display: flex; align-items: center; gap: 14px; }
.logo-icon { width: 42px; height: 42px; flex-shrink: 0; }
.logo-icon svg { width: 100%; height: 100%; }

.header-title {
  font-family: var(--display);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  line-height: 1.2;
}

.header-title .sub {
  display: block;
  font-size: 9px;
  color: var(--text-dim);
  font-weight: 400;
  letter-spacing: 3px;
}

.header-meta { display: flex; align-items: center; gap: 24px; }
.progress-bar-wrap { flex: 1; max-width: 240px; }

.progress-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  margin-bottom: 4px;
  display: flex;
  justify-content: space-between;
}

.progress-track {
  height: 3px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent3));
  width: 0%;
  transition: width 0.4s ease;
  box-shadow: 0 0 10px var(--accent);
}

.header-status {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent3);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.blink { animation: blink 1.2s step-end infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* ─── HERO ───────────────────────────────────────── */
.hero {
  position: relative;
  padding: 72px 32px 56px;
  text-align: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,119,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,119,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove { to { background-position: 40px 40px; } }

.hero-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, var(--bg) 100%);
  pointer-events: none;
}

.hero-corner {
  position: absolute;
  width: 60px;
  height: 60px;
  border-color: var(--accent);
  border-style: solid;
  opacity: 0.35;
  transition: opacity 0.3s;
}
.hero:hover .hero-corner { opacity: 0.6; }
.hero-corner.tl { top: 20px; left: 20px; border-width: 2px 0 0 2px; }
.hero-corner.tr { top: 20px; right: 20px; border-width: 2px 2px 0 0; }
.hero-corner.bl { bottom: 20px; left: 20px; border-width: 0 0 2px 2px; }
.hero-corner.br { bottom: 20px; right: 20px; border-width: 0 2px 2px 0; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--accent2);
  border: 1px solid var(--accent2);
  padding: 5px 18px;
  margin-bottom: 24px;
  text-transform: uppercase;
  animation: pulseGlow 3s ease-in-out infinite;
  position: relative;
}

@keyframes pulseGlow {
  0%,100% { box-shadow: 0 0 8px rgba(255,107,0,0.2); }
  50%      { box-shadow: 0 0 24px rgba(255,107,0,0.5); }
}

.hero h1 {
  font-family: var(--display);
  font-size: clamp(28px, 5vw, 56px);
  font-weight: 900;
  color: var(--text-bright);
  letter-spacing: 3px;
  text-transform: uppercase;
  line-height: 1.05;
  margin-bottom: 8px;
  text-shadow: 0 0 60px rgba(0,212,255,0.25);
  position: relative;
}

.hero h1 span { color: var(--accent); }

.hero-sub {
  font-family: var(--display);
  font-size: clamp(11px, 1.8vw, 16px);
  color: var(--text-dim);
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-bottom: 28px;
  position: relative;
}

.hero-desc {
  max-width: 700px;
  margin: 0 auto 36px;
  font-size: 17px;
  color: var(--text);
  line-height: 1.75;
  position: relative;
}

.hero-desc em {
  color: var(--accent);
  font-style: italic;
  font-family: var(--mono);
  font-size: 13px;
  display: block;
  margin-top: 10px;
  letter-spacing: 2px;
  opacity: 0.8;
}

.hero-stats { display: flex; justify-content: center; gap: 32px; flex-wrap: wrap; position: relative; }

.hero-stat {
  text-align: center;
  padding: 12px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(0,212,255,0.03);
  transition: all 0.3s;
  min-width: 100px;
}

.hero-stat:hover {
  border-color: var(--accent);
  background: rgba(0,212,255,0.07);
  transform: translateY(-3px);
}

.hero-stat-num {
  font-family: var(--display);
  font-size: 26px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
}

.hero-stat-label {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ─── LAYOUT ─────────────────────────────────────── */
.layout { display: flex; max-width: 1440px; margin: 0 auto; }

/* ─── SIDEBAR ────────────────────────────────────── */
.sidebar {
  width: 290px;
  flex-shrink: 0;
  position: sticky;
  top: 89px;
  height: calc(100vh - 89px);
  overflow-y: auto;
  border-right: 1px solid var(--border);
  padding: 20px 0 40px;
  background: var(--bg);
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.sidebar::-webkit-scrollbar { width: 3px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.nav-section-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--text-dim);
  text-transform: uppercase;
  padding: 14px 20px 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 20px;
  cursor: pointer;
  transition: all 0.2s;
  border-left: 2px solid transparent;
  text-decoration: none;
  color: var(--text-dim);
  user-select: none;
}

.nav-item:hover { background: rgba(0,212,255,0.04); color: var(--text); border-left-color: rgba(0,119,255,0.4); }
.nav-item.active { background: rgba(0,212,255,0.08); color: var(--accent); border-left-color: var(--accent); }

.nav-item-num { font-family: var(--mono); font-size: 10px; color: inherit; min-width: 22px; opacity: 0.7; }
.nav-item.active .nav-item-num { opacity: 1; }

.nav-item-text {
  font-family: var(--body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  flex: 1;
}

.nav-difficulty {
  font-family: var(--mono);
  font-size: 8px;
  padding: 2px 5px;
  border-radius: 2px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.diff-beginner     { background: rgba(0,255,157,0.12); color: var(--accent3); }
.diff-intermediate { background: rgba(255,179,0,0.12);  color: var(--warn); }
.diff-advanced     { background: rgba(255,45,45,0.12);  color: var(--danger); }
.diff-all          { background: rgba(180,79,255,0.12); color: var(--purple); }

/* ─── MAIN CONTENT ───────────────────────────────── */
.main-content { flex: 1; min-width: 0; padding: 40px 44px; }

/* ─── SECTION ────────────────────────────────────── */
.section { display: none; animation: fadeIn 0.35s ease; }
.section.active { display: block; }

@keyframes fadeIn { from{opacity:0;transform:translateY(12px)} to{opacity:1;transform:translateY(0)} }

/* Loading state */
.section-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  gap: 16px;
}

.section-loading-bar {
  width: 200px;
  height: 2px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.section-loading-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent3));
  animation: loadPulse 1.2s ease-in-out infinite;
  box-shadow: 0 0 10px var(--accent);
}

@keyframes loadPulse {
  0%   { width: 0%; margin-left: 0; }
  50%  { width: 60%; margin-left: 20%; }
  100% { width: 0%; margin-left: 100%; }
}

.section-loading-msg {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 3px;
  text-transform: uppercase;
}

/* ─── SECTION HEADER ─────────────────────────────── */
.section-header {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.section-header::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0;
  width: 80px; height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.section-tag {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent2);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-tag::before { content:''; width:20px; height:1px; background:var(--accent2); }

.section-title {
  font-family: var(--display);
  font-size: clamp(20px, 2.8vw, 30px);
  font-weight: 700;
  color: var(--text-bright);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.section-desc { color: var(--text); font-size: 15px; max-width: 720px; line-height: 1.7; }

.breadcrumb {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 1px;
}
.breadcrumb span { color: var(--accent); }

/* ─── CARDS ──────────────────────────────────────── */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.card:hover { border-color: rgba(0,119,255,0.4); box-shadow: var(--shadow); }

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  border-radius: var(--radius) var(--radius) 0 0;
}

.card.accent::before  { background: linear-gradient(90deg, var(--accent), transparent); }
.card.accent2::before { background: linear-gradient(90deg, var(--accent2), transparent); }
.card.accent3::before { background: linear-gradient(90deg, var(--accent3), transparent); }
.card.danger::before  { background: linear-gradient(90deg, var(--danger), transparent); }
.card.warn::before    { background: linear-gradient(90deg, var(--warn), transparent); }
.card.purple::before  { background: linear-gradient(90deg, var(--purple), transparent); }
.card.teal::before    { background: linear-gradient(90deg, var(--teal), transparent); }

.card-title {
  font-family: var(--display);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-bright);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title .icon { font-size: 17px; line-height: 1; }
.card p { color: var(--text); font-size: 14px; line-height: 1.75; margin-bottom: 10px; }
.card p:last-child { margin-bottom: 0; }
.card ul, .card ol { padding-left: 18px; margin-bottom: 10px; }
.card li { color: var(--text); font-size: 14px; margin-bottom: 5px; line-height: 1.65; }

/* ─── GRIDS ──────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; margin-bottom: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 24px; }

/* ─── TOOL CARDS ─────────────────────────────────── */
.tool-card {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: all 0.25s;
  position: relative;
  overflow: hidden;
}

.tool-card:hover {
  border-color: var(--accent);
  background: rgba(0,212,255,0.04);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,119,255,0.1);
}

.tool-name  { font-family: var(--mono); font-size: 13px; color: var(--accent); margin-bottom: 3px; font-weight: 700; }
.tool-type  { font-family: var(--mono); font-size: 10px; color: var(--text-dim); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px; }
.tool-desc  { font-size: 13px; color: var(--text); line-height: 1.55; }

.tool-cost {
  position: absolute; top: 10px; right: 10px;
  font-family: var(--mono); font-size: 9px;
  padding: 2px 7px; border-radius: 2px;
  text-transform: uppercase; letter-spacing: 0.5px;
}

.cost-free     { background: rgba(0,255,157,0.12); color: var(--accent3); }
.cost-paid     { background: rgba(255,107,0,0.12);  color: var(--accent2); }
.cost-freemium { background: rgba(255,179,0,0.12);  color: var(--warn); }

/* ─── CODE BLOCKS ────────────────────────────────── */
pre, code {
  font-family: var(--mono);
  background: rgba(0,0,0,0.45);
  border: 1px solid var(--border);
  border-radius: 3px;
}

pre {
  padding: 14px 18px;
  overflow-x: auto;
  font-size: 12px;
  line-height: 1.65;
  color: var(--accent3);
  margin-bottom: 14px;
  position: relative;
}

pre .comment { color: var(--text-dim); }
pre .keyword  { color: var(--accent); }
pre .string   { color: var(--accent2); }
code { padding: 2px 6px; font-size: 12px; color: var(--accent); }

/* ─── TIMELINE ───────────────────────────────────── */
.timeline { position: relative; padding-left: 40px; margin-bottom: 24px; }

.timeline::before {
  content: '';
  position: absolute;
  left: 12px; top: 8px; bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--accent), var(--border), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 16px;
  padding: 14px 18px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.25s;
}

.timeline-item:hover { border-color: rgba(0,119,255,0.4); }

.timeline-item::before {
  content: '';
  position: absolute;
  left: -32px; top: 18px;
  width: 10px; height: 10px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent);
}

.timeline-step  { font-family: var(--mono); font-size: 9px; color: var(--accent); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 3px; }
.timeline-title { font-family: var(--body); font-size: 15px; font-weight: 700; color: var(--text-bright); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 1px; }
.timeline-text  { font-size: 13px; color: var(--text); line-height: 1.65; }

/* ─── ALERTS ─────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-left: 3px solid;
  background: var(--panel);
  margin-bottom: 14px;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 13px;
  line-height: 1.65;
}

.alert-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 4px;
}

.alert.info    { border-color: var(--accent);  }  .alert.info .alert-label    { color: var(--accent);  }
.alert.warn    { border-color: var(--warn);    }  .alert.warn .alert-label    { color: var(--warn);    }
.alert.danger  { border-color: var(--danger);  }  .alert.danger .alert-label  { color: var(--danger);  }
.alert.success { border-color: var(--accent3); }  .alert.success .alert-label { color: var(--accent3); }
.alert.purple  { border-color: var(--purple);  }  .alert.purple .alert-label  { color: var(--purple);  }

/* ─── STEPS ──────────────────────────────────────── */
.steps { margin-bottom: 24px; }

.step {
  display: flex;
  gap: 14px;
  margin-bottom: 12px;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.25s;
}

.step:hover { border-color: rgba(0,119,255,0.35); }
.step-num   { font-family: var(--display); font-size: 18px; font-weight: 900; color: var(--accent); min-width: 28px; line-height: 1; opacity: 0.55; }
.step-title { font-family: var(--body); font-size: 14px; font-weight: 700; color: var(--text-bright); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 5px; }
.step-text  { font-size: 13px; color: var(--text); line-height: 1.65; }

/* ─── CASE STUDY ─────────────────────────────────── */
.case-study {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 24px;
  overflow: hidden;
  transition: border-color 0.3s;
}

.case-study:hover { border-color: rgba(0,119,255,0.35); }

.case-header {
  background: rgba(0,0,0,0.3);
  padding: 14px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.case-badge  { font-family: var(--mono); font-size: 9px; padding: 3px 9px; border-radius: 2px; text-transform: uppercase; letter-spacing: 1px; }
.case-title  { font-family: var(--display); font-size: 13px; font-weight: 700; color: var(--text-bright); letter-spacing: 1px; text-transform: uppercase; flex: 1; }
.case-amount { font-family: var(--mono); font-size: 13px; color: var(--danger); font-weight: 700; }
.case-body   { padding: 18px 22px; }
.case-meta   { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 14px; }
.case-meta-item { font-family: var(--mono); font-size: 10px; color: var(--text-dim); display: flex; align-items: center; gap: 4px; }
.case-meta-item span { color: var(--text); }
.case-text   { font-size: 13px; color: var(--text); line-height: 1.75; margin-bottom: 10px; }

.case-findings { background: rgba(0,0,0,0.3); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; margin-top: 10px; }
.case-findings-label { font-family: var(--mono); font-size: 9px; color: var(--accent3); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px; }

.case-finding-item {
  font-size: 12px;
  color: var(--text);
  padding: 4px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  display: flex;
  gap: 8px;
}

.case-finding-item:last-child { border-bottom: none; }
.case-finding-item::before { content: '›'; color: var(--accent); font-weight: 700; flex-shrink: 0; }

/* ─── TABLE ──────────────────────────────────────── */
.table-wrap { overflow-x: auto; margin-bottom: 24px; border: 1px solid var(--border); border-radius: var(--radius); }

table { width: 100%; border-collapse: collapse; font-size: 13px; }

th {
  background: rgba(0,0,0,0.4);
  padding: 10px 14px;
  text-align: left;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--accent);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td { padding: 10px 14px; color: var(--text); border-bottom: 1px solid rgba(255,255,255,0.03); vertical-align: top; font-size: 13px; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.015); }

/* ─── TAGS ───────────────────────────────────────── */
.tag { display: inline-block; font-family: var(--mono); font-size: 9px; padding: 2px 8px; border-radius: 2px; letter-spacing: 1px; text-transform: uppercase; margin: 2px; }
.tag-blue   { background: rgba(0,119,255,0.18);  color: #6db3ff; }
.tag-orange { background: rgba(255,107,0,0.18);  color: #ff9955; }
.tag-green  { background: rgba(0,255,157,0.18);  color: var(--accent3); }
.tag-red    { background: rgba(255,45,45,0.18);  color: #ff7070; }
.tag-purple { background: rgba(180,79,255,0.18); color: var(--purple); }
.tag-teal   { background: rgba(0,229,204,0.18);  color: var(--teal); }

/* ─── QUOTE ──────────────────────────────────────── */
.expert-quote {
  border-left: 3px solid var(--accent);
  padding: 14px 20px;
  background: rgba(0,212,255,0.03);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 20px;
  font-size: 14px;
  color: var(--text-bright);
  font-style: italic;
  line-height: 1.75;
}

.expert-quote-attr {
  display: block;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  font-style: normal;
  letter-spacing: 1px;
}

/* ─── GLOSSARY ───────────────────────────────────── */
.glossary-search {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  padding: 10px 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.25s;
}

.glossary-search:focus-within { border-color: var(--accent); }
.glossary-search input { flex: 1; background: none; border: none; outline: none; color: var(--text-bright); font-family: var(--mono); font-size: 13px; }
.glossary-search input::placeholder { color: var(--text-dim); }
.glossary-search-icon { color: var(--text-dim); font-size: 15px; }

.glossary-item { border-bottom: 1px solid var(--border); padding: 12px 0; transition: padding 0.2s; }
.glossary-item:hover { padding-left: 4px; }
.glossary-term { font-family: var(--mono); font-size: 13px; color: var(--accent); font-weight: 700; margin-bottom: 3px; }
.glossary-def  { font-size: 13px; color: var(--text); line-height: 1.65; }

/* ─── RESOURCE LINKS ─────────────────────────────── */
.resource-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; }

.resource-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.2s;
}

.resource-item:hover { border-color: var(--accent); background: rgba(0,212,255,0.04); transform: translateX(4px); }
.resource-icon  { font-size: 18px; }
.resource-title { font-family: var(--body); font-size: 13px; font-weight: 700; color: var(--text-bright); text-transform: uppercase; letter-spacing: 0.5px; }
.resource-url   { font-family: var(--mono); font-size: 10px; color: var(--text-dim); }

/* ─── DRILLDOWN ACCORDION ────────────────────────── */
.drilldown-category { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; transition: border-color 0.3s; }
.drilldown-category:hover { border-color: rgba(0,119,255,0.4); }

.drilldown-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  background: var(--panel2);
  user-select: none;
  transition: background 0.25s;
}

.drilldown-header:hover { background: var(--panel3); }
.drilldown-header.open  { background: rgba(0,212,255,0.06); border-bottom: 1px solid var(--border); }

.drilldown-icon { font-size: 22px; flex-shrink: 0; }
.drilldown-title-group { flex: 1; }

.drilldown-title {
  font-family: var(--display);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-bright);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 2px;
}

.drilldown-subtitle { font-family: var(--mono); font-size: 10px; color: var(--text-dim); letter-spacing: 1px; }
.drilldown-tags { display: flex; gap: 4px; flex-wrap: wrap; }
.drilldown-chevron { font-family: var(--mono); font-size: 12px; color: var(--text-dim); transition: transform 0.3s, color 0.3s; flex-shrink: 0; }
.drilldown-header.open .drilldown-chevron { transform: rotate(90deg); color: var(--accent); }

.drilldown-body { display: none; background: var(--panel); }
.drilldown-body.open { display: block; }

/* Sub-category tabs */
.subcategory-tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); background: rgba(0,0,0,0.2); overflow-x: auto; scrollbar-width: none; }
.subcategory-tabs::-webkit-scrollbar { display: none; }

.sub-tab {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 10px 16px;
  cursor: pointer;
  white-space: nowrap;
  color: var(--text-dim);
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  flex-shrink: 0;
}

.sub-tab:hover  { color: var(--text); background: rgba(255,255,255,0.02); }
.sub-tab.active { color: var(--accent); border-bottom-color: var(--accent); background: rgba(0,212,255,0.04); }

.subcategory-panels { padding: 20px; }
.subcategory-panel { display: none; animation: fadeIn 0.25s ease; }
.subcategory-panel.active { display: block; }

/* Crime info rows */
.crime-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
@media (max-width: 700px) { .crime-grid { grid-template-columns: 1fr; } }

.crime-field { background: rgba(0,0,0,0.25); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.crime-field-label { font-family: var(--mono); font-size: 9px; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); margin-bottom: 6px; }
.crime-field-content { font-size: 13px; color: var(--text); line-height: 1.65; }
.crime-field-content ul { padding-left: 14px; margin: 0; }
.crime-field-content li { margin-bottom: 3px; }

/* ─── DIAGRAM CONTAINERS ─────────────────────────── */
.diagram-wrap { background: var(--panel2); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; overflow: hidden; }
.diagram-title { font-family: var(--display); font-size: 12px; font-weight: 700; color: var(--text-bright); text-transform: uppercase; letter-spacing: 2px; margin-bottom: 20px; text-align: center; }

/* ML Stage Flow */
.ml-stages { display: flex; align-items: stretch; gap: 0; position: relative; margin-bottom: 16px; flex-wrap: nowrap; overflow-x: auto; }

.ml-stage {
  flex: 1; min-width: 140px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 14px;
  position: relative;
  transition: all 0.3s;
  cursor: pointer;
}

.ml-stage:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
.ml-stage::after { content: '›'; position: absolute; right: -14px; top: 50%; transform: translateY(-50%); font-size: 18px; color: var(--text-dim); z-index: 1; }
.ml-stage:last-child::after { display: none; }

.ml-stage.placement   { border-top: 3px solid var(--accent2); }
.ml-stage.layering    { border-top: 3px solid var(--warn); }
.ml-stage.integration { border-top: 3px solid var(--accent3); }

.ml-stage-num  { font-family: var(--display); font-size: 10px; color: var(--text-dim); letter-spacing: 2px; margin-bottom: 4px; }
.ml-stage-name { font-family: var(--display); font-size: 14px; font-weight: 700; margin-bottom: 8px; text-transform: uppercase; letter-spacing: 1px; }

.placement .ml-stage-name   { color: var(--accent2); }
.layering .ml-stage-name    { color: var(--warn); }
.integration .ml-stage-name { color: var(--accent3); }

.ml-stage-desc         { font-size: 12px; color: var(--text); line-height: 1.55; }
.ml-stage-crypto       { margin-top: 8px; }
.ml-stage-crypto-label { font-family: var(--mono); font-size: 9px; color: var(--text-dim); letter-spacing: 1px; margin-bottom: 3px; }
.ml-stage-crypto-items { font-size: 11px; color: var(--accent); }

/* Fraud Diamond */
.fraud-diamond-wrap  { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; }
.fraud-diamond-svg   { flex-shrink: 0; }
.fraud-diamond-legend { flex: 1; min-width: 200px; }

.fd-legend-item {
  display: flex; gap: 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer; transition: background 0.2s;
  border-radius: 4px; padding: 10px 8px;
}
.fd-legend-item:last-child { border-bottom: none; }
.fd-legend-item:hover { background: rgba(255,255,255,0.02); }

.fd-color { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; margin-top: 2px; }
.fd-label { font-family: var(--display); font-size: 11px; font-weight: 700; color: var(--text-bright); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 3px; }
.fd-desc  { font-size: 12px; color: var(--text); line-height: 1.55; }

/* ─── MOBILE ─────────────────────────────────────── */
.mobile-nav-toggle {
  display: none;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
  padding: 8px 14px;
  cursor: pointer;
  letter-spacing: 2px;
  text-transform: uppercase;
  border-radius: var(--radius);
  margin-bottom: 20px;
}

@media (max-width: 960px) {
  .sidebar { display: none; }
  .sidebar.open { display: block; position: fixed; top: 89px; left: 0; z-index: 50; width: 270px; height: calc(100vh - 89px); border-right: 1px solid var(--border); }
  .mobile-nav-toggle { display: inline-flex; align-items: center; gap: 6px; }
  .main-content { padding: 24px 16px; }
  .layout { flex-direction: column; }
  .hero { padding: 40px 16px; }
  .header-inner { padding: 10px 16px; }
  .progress-bar-wrap { display: none; }
  .header-ticker { display: none; }
  .ml-stages { flex-wrap: wrap; }
  .ml-stage::after { display: none; }
  .crime-grid { grid-template-columns: 1fr; }
  .fraud-diamond-wrap { flex-direction: column; }
}

/* ─── TYPOGRAPHY ─────────────────────────────────── */
h2 { font-family: var(--display); font-size: 16px; font-weight: 700; color: var(--text-bright); text-transform: uppercase; letter-spacing: 2px; margin: 28px 0 14px; display: flex; align-items: center; gap: 10px; }
h2::before { content: ''; width: 4px; height: 16px; background: var(--accent); border-radius: 2px; flex-shrink: 0; }
h3 { font-family: var(--body); font-size: 15px; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: 1px; margin: 18px 0 10px; }
ul, ol { padding-left: 18px; margin-bottom: 14px; }
li { color: var(--text); font-size: 14px; margin-bottom: 5px; line-height: 1.65; }
li strong { color: var(--text-bright); }
strong { color: var(--text-bright); font-weight: 700; }
p { margin-bottom: 10px; font-size: 14px; color: var(--text); line-height: 1.75; }
hr { border: none; border-top: 1px solid var(--border); margin: 28px 0; }

.highlight    { color: var(--accent); font-weight: 700; }
.danger-text  { color: var(--danger); }
.warn-text    { color: var(--warn); }
.success-text { color: var(--accent3); }
.purple-text  { color: var(--purple); }

/* ─── SCROLL TOP ─────────────────────────────────── */
.scroll-top {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--accent);
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 16px; z-index: 200;
  opacity: 0; transition: all 0.3s;
  border-radius: var(--radius);
  font-family: var(--mono);
}
.scroll-top.visible { opacity: 1; }
.scroll-top:hover   { border-color: var(--accent); box-shadow: 0 0 14px rgba(0,212,255,0.25); }

/* ─── LOADER ─────────────────────────────────────── */
.loader {
  position: fixed; inset: 0;
  background: var(--bg);
  z-index: 9999;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 20px;
  transition: opacity 0.6s;
}
.loader.hidden { opacity: 0; pointer-events: none; }

.loader-logo    { font-family: var(--display); font-size: 48px; font-weight: 900; color: var(--accent); letter-spacing: 6px; text-shadow: 0 0 60px rgba(0,212,255,0.4); }
.loader-title   { font-family: var(--display); font-size: 13px; font-weight: 400; color: var(--text-dim); letter-spacing: 6px; text-transform: uppercase; margin-top: -12px; }
.loader-bar     { width: 260px; height: 2px; background: var(--panel); border: 1px solid var(--border); overflow: hidden; border-radius: 2px; }
.loader-bar-fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent3)); width: 0%; animation: load 1.6s ease forwards; box-shadow: 0 0 12px var(--accent); }
@keyframes load { to { width: 100%; } }
.loader-msg     { font-family: var(--mono); font-size: 10px; color: var(--text-dim); letter-spacing: 3px; text-transform: uppercase; }
.loader-version { font-family: var(--mono); font-size: 10px; color: var(--accent2); letter-spacing: 2px; }