/* ============================================================
   ROCKETRY CLEARANCE — Design System
   Aesthetic: Technical Manual meets Launch Control Room
   Palette: Deep navy, signal orange, off-white paper
   Typography: Courier/monospace + clean sans
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400&family=Barlow+Condensed:wght@300;400;600;700;800;900&family=Barlow:wght@300;400;500;600&display=swap');

/* ── CSS Custom Properties ── */
:root {
  --c-bg:          #0a0e1a;
  --c-surface:     #0f1628;
  --c-surface2:    #161f38;
  --c-surface3:    #1c2844;
  --c-border:      #2a3a5c;
  --c-border2:     #3a4f7a;

  --c-orange:      #ff6b1a;
  --c-orange-dim:  #cc4f00;
  --c-orange-glow: rgba(255, 107, 26, 0.15);
  --c-amber:       #ffb347;
  --c-green:       #39d353;
  --c-green-dim:   rgba(57, 211, 83, 0.12);
  --c-red:         #ff4444;
  --c-red-dim:     rgba(255, 68, 68, 0.12);
  --c-blue:        #4a9eff;
  --c-yellow:      #ffd700;

  --c-text:        #e8edf5;
  --c-text-dim:    #8899bb;
  --c-text-muted:  #5a6e92;
  --c-paper:       #f0ede6;

  --f-mono:        'Space Mono', 'Courier New', monospace;
  --f-condensed:   'Barlow Condensed', 'Arial Narrow', sans-serif;
  --f-body:        'Barlow', 'Helvetica Neue', sans-serif;

  --radius:        4px;
  --radius-lg:     8px;
  --max-w:         1160px;
  --max-article:   780px;

  --shadow-card:   0 2px 20px rgba(0,0,0,0.4), 0 0 0 1px var(--c-border);
  --shadow-glow:   0 0 30px rgba(255, 107, 26, 0.2);

  --transition:    0.18s ease;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--f-body);
  font-weight: 400;
  line-height: 1.7;
  min-height: 100vh;
  /* Subtle grid texture for the "technical manual" feel */
  background-image:
    linear-gradient(rgba(42, 58, 92, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 58, 92, 0.15) 1px, transparent 1px);
  background-size: 48px 48px;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-orange); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-amber); }
ul, ol { padding-left: 1.5em; }

/* ── Site Header ── */
.site-header {
  background: rgba(10, 14, 26, 0.97);
  border-bottom: 2px solid var(--c-orange);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--c-orange);
  clip-path: polygon(50% 0%, 90% 75%, 70% 75%, 70% 100%, 30% 100%, 30% 75%, 10% 75%);
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--f-condensed);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.08em;
  color: var(--c-text);
  text-transform: uppercase;
  line-height: 1;
}

.logo-text span { color: var(--c-orange); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.site-nav a {
  font-family: var(--f-condensed);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--c-orange);
  background: var(--c-orange-glow);
}

/* ── Hero Sections ── */
.hero {
  padding: 5rem 1.5rem 4rem;
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
}

.hero-eyebrow {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-orange);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 2px;
  background: var(--c-orange);
}

.hero h1 {
  font-family: var(--f-condensed);
  font-weight: 900;
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  line-height: 1.0;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  max-width: 800px;
}

.hero h1 em {
  font-style: normal;
  color: var(--c-orange);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--c-text-dim);
  max-width: 620px;
  margin-bottom: 2rem;
  line-height: 1.65;
}

/* ── Breadcrumb ── */
.breadcrumb {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  padding: 1rem 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--c-text-muted); }
.breadcrumb a:hover { color: var(--c-orange); }
.breadcrumb .sep { color: var(--c-border2); }
.breadcrumb .current { color: var(--c-text-dim); }

/* ── Layout: Containers ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 3.5rem 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
}

/* ── Section Headers ── */
.section-label {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-orange);
  margin-bottom: 0.5rem;
}

.section-title {
  font-family: var(--f-condensed);
  font-weight: 800;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--c-text-dim);
  max-width: 560px;
  font-size: 0.95rem;
}

/* ── Cards ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all 0.22s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--c-orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.card:hover {
  border-color: var(--c-border2);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.card:hover::before { transform: scaleX(1); }

.card-icon {
  font-size: 1.6rem;
  margin-bottom: 0.75rem;
  line-height: 1;
}

.card-title {
  font-family: var(--f-condensed);
  font-weight: 700;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
  color: var(--c-text);
}

.card-desc {
  font-size: 0.875rem;
  color: var(--c-text-dim);
  line-height: 1.6;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-orange);
  margin-top: 1rem;
}

.card-link::after { content: '→'; }

/* ── Status Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  font-weight: 700;
}

.badge-green  { background: var(--c-green-dim); color: var(--c-green); border: 1px solid rgba(57,211,83,0.25); }
.badge-red    { background: var(--c-red-dim);   color: var(--c-red);   border: 1px solid rgba(255,68,68,0.25); }
.badge-orange { background: var(--c-orange-glow); color: var(--c-orange); border: 1px solid rgba(255,107,26,0.3); }
.badge-blue   { background: rgba(74,158,255,0.1); color: var(--c-blue); border: 1px solid rgba(74,158,255,0.25); }

/* ── Alert / Info Box ── */
.alert {
  background: var(--c-surface2);
  border-left: 4px solid var(--c-orange);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

.alert-title {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-orange);
  margin-bottom: 0.4rem;
}

.alert p { color: var(--c-text-dim); }

.alert-green { border-left-color: var(--c-green); }
.alert-green .alert-title { color: var(--c-green); }
.alert-red { border-left-color: var(--c-red); }
.alert-red .alert-title { color: var(--c-red); }

/* ── Data Tables ── */
.data-table-wrap {
  overflow-x: auto;
  margin: 1.5rem 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

th {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: var(--c-surface2);
  color: var(--c-orange);
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 2px solid var(--c-orange);
  white-space: nowrap;
}

td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text-dim);
  vertical-align: top;
}

tr:last-child td { border-bottom: none; }

tr:hover td { background: var(--c-surface2); }

td strong { color: var(--c-text); }
td code {
  font-family: var(--f-mono);
  font-size: 0.82em;
  background: var(--c-surface3);
  padding: 0.1em 0.4em;
  border-radius: 2px;
  color: var(--c-amber);
}

/* ── Article Layout ── */
.article-wrap {
  max-width: var(--max-article);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--c-border);
}

.article-meta-item {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.article-body h2 {
  font-family: var(--f-condensed);
  font-weight: 800;
  font-size: 1.55rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  line-height: 1.15;
  color: var(--c-text);
  margin: 2.5rem 0 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--c-border);
}

.article-body h2:first-child { border-top: none; padding-top: 0; margin-top: 0; }

.article-body h3 {
  font-family: var(--f-condensed);
  font-weight: 700;
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--c-orange);
  margin: 1.75rem 0 0.5rem;
}

.article-body p { margin-bottom: 1.1rem; color: var(--c-text-dim); line-height: 1.75; }
.article-body p strong { color: var(--c-text); }
.article-body ul, .article-body ol { margin: 0.75rem 0 1.1rem 1.5rem; color: var(--c-text-dim); }
.article-body li { margin-bottom: 0.4rem; line-height: 1.65; }
.article-body li strong { color: var(--c-text); }

/* ── FAQ Accordion ── */
.faq-section { margin: 3rem 0; }

.faq-title {
  font-family: var(--f-condensed);
  font-weight: 800;
  font-size: 1.4rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.faq-title::before {
  content: 'FAQ';
  font-family: var(--f-mono);
  font-size: 0.65rem;
  background: var(--c-orange);
  color: #000;
  padding: 0.15rem 0.4rem;
  letter-spacing: 0.1em;
}

.faq-item {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.faq-q {
  width: 100%;
  background: var(--c-surface);
  border: none;
  cursor: pointer;
  padding: 1rem 1.25rem;
  text-align: left;
  color: var(--c-text);
  font-family: var(--f-body);
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: background var(--transition);
}

.faq-q:hover { background: var(--c-surface2); }
.faq-q.open { background: var(--c-surface2); color: var(--c-orange); }

.faq-toggle {
  font-size: 1.2rem;
  font-weight: 300;
  color: var(--c-orange);
  flex-shrink: 0;
  transition: transform var(--transition);
  font-family: var(--f-mono);
}

.faq-q.open .faq-toggle { transform: rotate(45deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.2s ease;
  background: var(--c-surface2);
}

.faq-a.open {
  max-height: 600px;
  padding: 1rem 1.25rem 1.25rem;
}

.faq-a p {
  color: var(--c-text-dim);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 0;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--f-condensed);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius);
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--c-orange);
  color: #000;
}
.btn-primary:hover {
  background: var(--c-amber);
  color: #000;
  box-shadow: var(--shadow-glow);
}

.btn-outline {
  background: transparent;
  color: var(--c-orange);
  border: 1.5px solid var(--c-orange);
}
.btn-outline:hover {
  background: var(--c-orange-glow);
  color: var(--c-orange);
}

.btn-ghost {
  background: var(--c-surface2);
  color: var(--c-text-dim);
  border: 1px solid var(--c-border);
}
.btn-ghost:hover {
  background: var(--c-surface3);
  color: var(--c-text);
}

/* ── Tool / Calculator Styles ── */
.tool-wrap {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 2rem 0;
}

.tool-header {
  background: var(--c-surface2);
  border-bottom: 2px solid var(--c-orange);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.tool-header-title {
  font-family: var(--f-condensed);
  font-weight: 800;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.tool-body { padding: 1.75rem; }

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-orange);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  font-family: var(--f-mono);
  font-size: 0.9rem;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition);
  appearance: none;
}

.form-control:focus {
  border-color: var(--c-orange);
  box-shadow: 0 0 0 3px var(--c-orange-glow);
}

.form-hint {
  font-size: 0.78rem;
  color: var(--c-text-muted);
  margin-top: 0.3rem;
  font-family: var(--f-mono);
}

.tool-result {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-top: 1.5rem;
  min-height: 80px;
}

.result-hidden { display: none; }

.result-primary {
  font-family: var(--f-condensed);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--c-orange);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.result-rows { margin-top: 0.75rem; }

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--c-border);
  gap: 1rem;
  font-size: 0.875rem;
}

.result-row:last-child { border-bottom: none; }
.result-row-label { color: var(--c-text-muted); font-family: var(--f-mono); font-size: 0.78rem; letter-spacing: 0.05em; text-transform: uppercase; }
.result-row-val { color: var(--c-text); font-weight: 600; text-align: right; }
.result-row-val.warn { color: var(--c-amber); }
.result-row-val.ok { color: var(--c-green); }
.result-row-val.stop { color: var(--c-red); }

/* ── Progress / Steps ── */
.steps-list {
  list-style: none;
  padding: 0;
  counter-reset: steps;
  margin: 1.5rem 0;
}

.steps-list li {
  counter-increment: steps;
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
  align-items: flex-start;
  position: relative;
}

.steps-list li::before {
  content: counter(steps, decimal-leading-zero);
  font-family: var(--f-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: #000;
  background: var(--c-orange);
  min-width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.steps-list li p { margin: 0; color: var(--c-text-dim); font-size: 0.92rem; }
.steps-list li strong { color: var(--c-text); display: block; margin-bottom: 0.2rem; }

/* ── Sidebar Layout ── */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 84px;
}

.sidebar-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.sidebar-title {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-orange);
  margin-bottom: 0.75rem;
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-list li { margin-bottom: 0.3rem; }

.toc-list a {
  font-size: 0.83rem;
  color: var(--c-text-muted);
  display: block;
  padding: 0.2rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.75rem;
  transition: all var(--transition);
}

.toc-list a:hover {
  color: var(--c-orange);
  border-left-color: var(--c-orange);
}

.download-card {
  background: linear-gradient(135deg, var(--c-surface2), var(--c-surface3));
  border: 1px solid var(--c-border2);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  text-align: center;
  margin-bottom: 1.25rem;
}

.download-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.download-title {
  font-family: var(--f-condensed);
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.4rem;
}
.download-desc { font-size: 0.8rem; color: var(--c-text-muted); margin-bottom: 0.9rem; }

/* ── Site Footer ── */
.site-footer {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  margin-top: 4rem;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
}

.footer-brand .logo-text { margin-bottom: 0.75rem; display: block; }
.footer-brand p { font-size: 0.83rem; color: var(--c-text-muted); max-width: 260px; line-height: 1.6; }

.footer-col-title {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-orange);
  margin-bottom: 0.75rem;
}

.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: 0.4rem; }
.footer-col a { font-size: 0.85rem; color: var(--c-text-muted); }
.footer-col a:hover { color: var(--c-text); }

.footer-bottom {
  border-top: 1px solid var(--c-border);
  padding: 1.25rem 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-bottom p {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--c-text-muted);
  letter-spacing: 0.05em;
}

.footer-bottom a { color: var(--c-text-muted); }
.footer-bottom a:hover { color: var(--c-orange); }

/* ── Motor Class Color Chips ── */
.motor-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 3px;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

/* ── Highlight Box ── */
.highlight-box {
  background: linear-gradient(135deg, var(--c-surface2), var(--c-surface3));
  border: 1px solid var(--c-border2);
  border-left: 4px solid var(--c-orange);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 1.5rem;
  margin: 2rem 0;
}

.highlight-box p { margin: 0; font-size: 0.95rem; color: var(--c-text-dim); }
.highlight-box p + p { margin-top: 0.75rem; }
.highlight-box strong { color: var(--c-text); }

/* ── Quick Nav Strip ── */
.quick-nav {
  background: var(--c-surface2);
  border-bottom: 1px solid var(--c-border);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  white-space: nowrap;
}

.quick-nav a {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  padding: 0.3rem 0.65rem;
  border-radius: 2px;
  border: 1px solid var(--c-border);
  transition: all var(--transition);
  flex-shrink: 0;
}

.quick-nav a:hover {
  color: var(--c-orange);
  border-color: var(--c-orange);
  background: var(--c-orange-glow);
}

/* ── Stat Strip ── */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1px;
  background: var(--c-border);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 2.5rem 0;
}

.stat-item {
  background: var(--c-surface);
  padding: 1.25rem 1.5rem;
  text-align: center;
}

.stat-num {
  font-family: var(--f-condensed);
  font-weight: 900;
  font-size: 2.2rem;
  color: var(--c-orange);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-family: var(--f-mono);
  font-size: 0.66rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-text-muted);
}

/* ── Tag Pills ── */
.tag-list { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.75rem 0; }

.tag {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
  background: var(--c-surface3);
  color: var(--c-text-muted);
  border: 1px solid var(--c-border);
}

/* ── Disclaimer ── */
.disclaimer {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 2.5rem 0 1rem;
  font-size: 0.8rem;
  color: var(--c-text-muted);
  line-height: 1.6;
}

.disclaimer strong {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  display: block;
  margin-bottom: 0.35rem;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
    padding: 0 1rem 3rem;
  }
  .sidebar { position: static; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .hero { padding: 3rem 1rem 2.5rem; }
  .header-inner { height: 56px; }
  .site-nav { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
}

/* ── Print ── */
@media print {
  .site-header, .site-footer, .sidebar { display: none; }
  body { background: white; color: #000; }
  .article-body p, .article-body li { color: #333; }
}

/* ── Utility ── */
.text-orange { color: var(--c-orange); }
.text-dim { color: var(--c-text-dim); }
.text-muted { color: var(--c-text-muted); }
.text-mono { font-family: var(--f-mono); }
.text-condensed { font-family: var(--f-condensed); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ── Animations ── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.anim-fade-up {
  animation: fadeInUp 0.5s ease forwards;
}

.anim-delay-1 { animation-delay: 0.1s; }
.anim-delay-2 { animation-delay: 0.2s; }
.anim-delay-3 { animation-delay: 0.3s; }