/* ============================================================
   CableSpec Pro — Global Design System
   ============================================================ */

:root {
  --bg: #070b14;
  --bg2: #0d1524;
  --bg3: #111c30;
  --surface: rgba(255,255,255,0.04);
  --surface-hover: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.07);
  --border-hover: rgba(255,255,255,0.16);
  --text: #e8edf5;
  --text-muted: #8899b4;
  --text-dim: #4a5a73;
  --accent: #38bdf8;
  --accent-glow: rgba(56,189,248,0.25);
  --gold: #fbbf24;
  --green: #34d399;
  --purple: #a78bfa;
  --pink: #f472b6;
  --orange: #fb923c;
  --teal: #2dd4bf;
  --font: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 4px 32px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 64px rgba(0,0,0,0.7);
}

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

html { scroll-behavior: smooth; }

/* ── Keyboard focus visibility (cards, buttons, inputs are interactive) ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ── Respect reduced-motion preferences ── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

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

/* ── Background Canvas ── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.4;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: rgba(56,189,248,0.3); border-radius: 4px; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(7,11,20,0.85);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}
.navbar.scrolled { box-shadow: 0 2px 32px rgba(0,0,0,0.6); }
.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.75rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.nav-logo { display: flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }
.logo-icon { font-size: 1.5rem; }
.logo-text { font-size: 1.2rem; font-weight: 800; letter-spacing: -0.5px; color: #fff; }
.logo-accent { color: var(--accent); }
.nav-search-wrap {
  flex: 1;
  position: relative;
  max-width: 500px;
}
.nav-search {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 0.5rem 1rem 0.5rem 2.8rem;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.nav-search::placeholder { color: var(--text-dim); }
.nav-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.search-icon {
  position: absolute;
  left: 0.9rem;
  top: 50%; transform: translateY(-50%);
  font-size: 0.9rem;
  pointer-events: none;
}
.nav-stats { display: flex; gap: 0.6rem; flex-shrink: 0; }
.stat-badge {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 0.25rem 0.75rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 8rem 2rem 4rem;
  max-width: 1400px;
  margin: 0 auto;
  gap: 4rem;
  position: relative;
  z-index: 1;
}
.hero-content { max-width: 620px; }
.hero-tag {
  display: inline-block;
  background: linear-gradient(135deg, rgba(56,189,248,0.15), rgba(167,139,250,0.15));
  border: 1px solid rgba(56,189,248,0.3);
  border-radius: 50px;
  padding: 0.35rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.6s ease both;
}
.hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -2px;
  color: #fff;
  margin-bottom: 1.2rem;
  animation: fadeInUp 0.6s 0.1s ease both;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--purple) 50%, var(--pink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
  animation: fadeInUp 0.6s 0.2s ease both;
}
.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 3rem;
  animation: fadeInUp 0.6s 0.3s ease both;
}
.pill {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 0.45rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
}
.pill:hover, .pill.active {
  background: linear-gradient(135deg, rgba(56,189,248,0.2), rgba(167,139,250,0.2));
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 16px var(--accent-glow);
}
.hero-scroll-hint {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.4rem;
  color: var(--text-dim);
  font-size: 0.8rem;
  animation: fadeInUp 0.6s 0.4s ease both;
}
.scroll-arrow {
  animation: bounce 2s infinite;
  font-size: 1.2rem;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}
/* Hero Visual */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 1s 0.5s ease both;
}
.connector-orbit {
  width: 420px;
  height: 420px;
  position: relative;
}

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
  background: linear-gradient(135deg, rgba(56,189,248,0.05), rgba(167,139,250,0.05));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 1;
}
.stats-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
}
.stat-num {
  font-size: 2.8rem;
  font-weight: 900;
  font-family: var(--mono);
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 3rem 2rem 6rem;
  position: relative;
  z-index: 1;
}

/* ── Category Sections ── */
.category-section {
  margin-bottom: 5rem;
}
.cat-header {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  margin-bottom: 2rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--border);
}
.cat-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, color-mix(in srgb, var(--cat-color) 20%, transparent), color-mix(in srgb, var(--cat-color) 8%, transparent));
  border: 1px solid color-mix(in srgb, var(--cat-color) 30%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
  box-shadow: 0 4px 16px color-mix(in srgb, var(--cat-color) 15%, transparent);
}
.cat-title {
  font-size: 1.7rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 0.3rem;
}
.cat-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  max-width: 600px;
}

/* ── Cards Grid ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.2rem;
}

/* ── Industry Card ── */
.industry-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.industry-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--card-color-a, rgba(56,189,248,0.06)), var(--card-color-b, transparent));
  opacity: 0;
  transition: opacity 0.3s;
}
.industry-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--card-accent, var(--accent)), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.industry-card:hover {
  transform: translateY(-4px) scale(1.01);
  border-color: var(--border-hover);
  box-shadow: 0 8px 40px rgba(0,0,0,0.4), 0 0 0 1px var(--border-hover);
}
.industry-card:hover::before, .industry-card:hover::after { opacity: 1; }

.card-header {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
}
.card-icon {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
}
.card-meta { flex: 1; min-width: 0; }
.card-industry-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
  margin-bottom: 0.15rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-sector {
  font-size: 0.72rem;
  color: var(--card-accent, var(--accent));
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

/* Key cables */
.key-cables {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.cable-tag {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  padding: 0.2rem 0.6rem;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--mono);
  transition: all 0.2s;
}
.industry-card:hover .cable-tag {
  border-color: var(--border-hover);
  color: var(--text);
}

/* Key spec */
.card-spec-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.3rem;
}
.spec-chip {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(56,189,248,0.08);
  border: 1px solid rgba(56,189,248,0.15);
  border-radius: 50px;
  padding: 0.18rem 0.65rem;
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 500;
}

/* Card footer */
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 0.6rem;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.card-connector-count {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.card-cta {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  opacity: 0;
  transform: translateX(-4px);
  transition: all 0.2s;
}
.industry-card:hover .card-cta {
  opacity: 1;
  transform: translateX(0);
}

/* hidden card */
.industry-card.hidden {
  display: none;
}

/* ============================================================
   MODAL
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
.modal-card {
  background: #0e1629;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 780px;
  max-height: 88vh;
  overflow-y: auto;
  padding: 2rem;
  position: relative;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: var(--shadow-lg);
}
.modal-overlay.active .modal-card {
  transform: translateY(0) scale(1);
}
.modal-close {
  position: absolute;
  top: 1rem; right: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px; height: 36px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.modal-close:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}
.modal-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.8rem;
}
.modal-icon { font-size: 3rem; line-height: 1; }
.modal-industry-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 0.3rem;
}
.modal-title {
  font-size: 1.7rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}

/* Modal body sections */
.modal-section { margin-bottom: 1.6rem; }
.modal-section-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.modal-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.modal-description {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Connector Table */
.conn-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.conn-table th {
  text-align: left;
  padding: 0.6rem 0.8rem;
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}
.conn-table td {
  padding: 0.65rem 0.8rem;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  vertical-align: top;
}
.conn-table tr:hover td { background: var(--surface); color: var(--text); }
.conn-name {
  font-weight: 600;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.82rem;
}
.rating-badge {
  display: inline-flex;
  align-items: center;
  background: rgba(52,211,153,0.1);
  border: 1px solid rgba(52,211,153,0.2);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  font-size: 0.7rem;
  color: var(--green);
  font-family: var(--mono);
}

/* Standards chips */
.standards-wrap { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.standard-chip {
  background: rgba(167,139,250,0.1);
  border: 1px solid rgba(167,139,250,0.2);
  border-radius: 6px;
  padding: 0.25rem 0.7rem;
  font-size: 0.78rem;
  color: var(--purple);
  font-family: var(--mono);
}

/* Use-case list */
.usecase-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.usecase-item {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.65rem 0.9rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--text-muted);
}
.usecase-item::before {
  content: '→';
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 0.05rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
  text-align: center;
  position: relative;
  z-index: 1;
}
.footer-inner { max-width: 800px; margin: 0 auto; }
.footer-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.8rem;
}
.footer-sub {
  color: var(--text-dim);
  font-size: 0.88rem;
  margin-bottom: 1.5rem;
}
.footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes counterSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
  50% { box-shadow: 0 0 40px rgba(56,189,248,0.4); }
}

/* ── Reveal animation for cards ── */
.industry-card {
  animation: fadeInUp 0.5s ease both;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  .hero { grid-template-columns: 1fr; padding-top: 7rem; }
  .hero-visual { display: none; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
  .nav-stats { display: none; }
  .cards-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.2rem; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
  .stat-num { font-size: 2rem; }
  .modal-card { padding: 1.5rem; }
}

/* ── Orbit visual (hero decoration) ── */
.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.06);
}
.orbit-ring.r1 { width: 200px; height: 200px; top: 50%; left: 50%; transform: translate(-50%,-50%); }
.orbit-ring.r2 { width: 300px; height: 300px; top: 50%; left: 50%; transform: translate(-50%,-50%); animation: spin 20s linear infinite; }
.orbit-ring.r3 { width: 400px; height: 400px; top: 50%; left: 50%; transform: translate(-50%,-50%); animation: counterSpin 30s linear infinite; }
.orbit-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 80px; height: 80px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
  box-shadow: 0 0 40px var(--accent-glow);
  animation: pulseGlow 3s ease-in-out infinite;
}
.orbit-dot {
  position: absolute;
  width: 32px; height: 32px;
  background: var(--bg2);
  border: 1px solid var(--border-hover);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
}

/* No results */
.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem;
  color: var(--text-dim);
  font-size: 1rem;
}

/* ── Nav Tabs ── */
.nav-tabs {
  display: flex;
  gap: 0.3rem;
  flex-shrink: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 0.2rem;
}
.nav-tab {
  text-decoration: none;
  padding: 0.3rem 0.9rem;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.2s;
}
.nav-tab:hover, .nav-tab.active {
  background: linear-gradient(135deg, rgba(56,189,248,0.25), rgba(167,139,250,0.18));
  color: #fff;
}

/* ============================================================
   AWG GUIDE SECTION
   ============================================================ */
.awg-guide {
  background: linear-gradient(180deg, rgba(56,189,248,0.03) 0%, transparent 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 1;
  padding: 4rem 0;
}
.awg-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* AWG Header */
.awg-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: flex-start;
  margin-bottom: 2.5rem;
}
.awg-badge {
  display: inline-block;
  background: linear-gradient(135deg, rgba(251,191,36,0.15), rgba(251,191,36,0.05));
  border: 1px solid rgba(251,191,36,0.3);
  border-radius: 50px;
  padding: 0.3rem 0.9rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.awg-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 900;
  line-height: 1.1;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 0.8rem;
}
.awg-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 560px;
}
.awg-legend {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 180px;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* AWG Tab Switcher */
.awg-tabs {
  display: flex;
  gap: 0.3rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 0.3rem;
  margin-bottom: 2rem;
  width: fit-content;
  flex-wrap: wrap;
}
.awg-tab-btn {
  background: transparent;
  border: none;
  border-radius: 50px;
  padding: 0.5rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font);
  transition: all 0.25s;
  white-space: nowrap;
}
.awg-tab-btn:hover { color: var(--text); }
.awg-tab-btn.active {
  background: linear-gradient(135deg, rgba(56,189,248,0.25), rgba(167,139,250,0.2));
  color: #fff;
  box-shadow: 0 2px 12px rgba(56,189,248,0.15);
}

/* AWG Panels */
.awg-panel { display: none; }
.awg-panel.active { display: block; }

.panel-intro {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  padding: 0.9rem 1.2rem;
  background: rgba(56,189,248,0.04);
  border: 1px solid rgba(56,189,248,0.1);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
  line-height: 1.6;
}

/* ── AWG Reference Table ── */
.awg-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.awg-ref-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  min-width: 900px;
}
.awg-ref-table thead {
  background: linear-gradient(135deg, rgba(56,189,248,0.08), rgba(167,139,250,0.05));
  position: sticky;
  top: 0;
}
.awg-ref-table th {
  padding: 0.9rem 1rem;
  text-align: left;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.awg-ref-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--text-muted);
  vertical-align: middle;
}
.awg-ref-table tr:hover td { background: rgba(255,255,255,0.03); }
.awg-ref-table tr:last-child td { border-bottom: none; }
.awg-num {
  font-weight: 900;
  font-family: var(--mono);
  font-size: 1.05rem;
  color: #fff;
}
.awg-mm2 {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--accent);
  font-size: 0.88rem;
}
.awg-current {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--orange);
}
.awg-res {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-dim);
}
.awg-cond-od {
  font-family: var(--mono);
  color: var(--gold);
  font-size: 0.82rem;
}
.od-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  border: 1px solid;
  white-space: nowrap;
}
.od-pvc  { color: #60a5fa; border-color: rgba(96,165,250,0.25); background: rgba(96,165,250,0.07); }
.od-pur  { color: #34d399; border-color: rgba(52,211,153,0.25); background: rgba(52,211,153,0.07); }
.od-tpe  { color: #f472b6; border-color: rgba(244,114,182,0.25); background: rgba(244,114,182,0.07); }
.od-sil  { color: #fb923c; border-color: rgba(251,146,60,0.25); background: rgba(251,146,60,0.07); }
.awg-use-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  border: 1px solid;
  white-space: nowrap;
}
.use-signal { color: #38bdf8; border-color: rgba(56,189,248,0.25); background: rgba(56,189,248,0.08); }
.use-power  { color: #fb923c; border-color: rgba(251,146,60,0.25); background: rgba(251,146,60,0.08); }
.use-hybrid { color: #34d399; border-color: rgba(52,211,153,0.25); background: rgba(52,211,153,0.08); }
.use-rf     { color: #a78bfa; border-color: rgba(167,139,250,0.25); background: rgba(167,139,250,0.08); }

.awg-footnote {
  margin-top: 0.8rem;
  font-size: 0.75rem;
  color: var(--text-dim);
  font-style: italic;
  padding-left: 0.5rem;
}

/* ── Sheath Cards ── */
.sheath-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem;
}
.sheath-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}
.sheath-card:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(0,0,0,0.3); }
.sheath-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: var(--sc-color);
}
.sheath-name {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--sc-color);
  font-family: var(--mono);
  margin-bottom: 0.3rem;
}
.sheath-fullname {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}
.sheath-props {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.sheath-prop {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.sheath-prop-key { color: var(--text-dim); }
.sheath-prop-val { color: var(--text-muted); font-weight: 600; font-family: var(--mono); font-size: 0.78rem; }
.sheath-awg-range {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.sheath-awg-tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 0.18rem 0.5rem;
  border-radius: 4px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-muted);
}
.sheath-uses {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.sheath-use-tag {
  font-size: 0.72rem;
  padding: 0.18rem 0.55rem;
  border-radius: 4px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-dim);
}

/* ── Connector Matrix ── */
.awg-selector-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.selector-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.awg-selector {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.awg-sel-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.75rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  min-width: 52px;
  text-align: center;
}
.awg-sel-btn:hover { border-color: var(--border-hover); color: var(--text); }
.awg-sel-btn.active {
  background: linear-gradient(135deg, rgba(56,189,248,0.25), rgba(167,139,250,0.2));
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 12px var(--accent-glow);
}
.sheath-btns {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.sheath-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.35rem 0.8rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font);
  transition: all 0.2s;
}
.sheath-btn:hover { color: var(--text); }
.sheath-btn.active {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(251,191,36,0.1);
}

/* Matrix grid */
.compat-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.matrix-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s;
}
.matrix-card.compatible {
  border-color: rgba(52,211,153,0.35);
  box-shadow: 0 0 20px rgba(52,211,153,0.08);
}
.matrix-card.marginal {
  border-color: rgba(251,146,60,0.35);
  box-shadow: 0 0 20px rgba(251,146,60,0.08);
}
.matrix-card.incompatible {
  opacity: 0.35;
}
.matrix-card-head {
  padding: 0.8rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}
.matrix-series {
  font-family: var(--mono);
  font-size: 1.3rem;
  font-weight: 900;
  color: #fff;
}
.matrix-compat-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  border: 1px solid;
}
.badge-ok  { color: var(--green); border-color: rgba(52,211,153,0.4); background: rgba(52,211,153,0.1); }
.badge-mg  { color: var(--orange); border-color: rgba(251,146,60,0.4); background: rgba(251,146,60,0.1); }
.badge-no  { color: var(--text-dim); border-color: rgba(255,255,255,0.1); background: transparent; }

.matrix-card-body { padding: 0.9rem 1rem; }

/* Pin rows */
.pin-rows { display: flex; flex-direction: column; gap: 0.45rem; margin-bottom: 0.7rem; }
.pin-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.7rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  font-size: 0.8rem;
}
.pin-count {
  font-family: var(--mono);
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--accent);
  min-width: 24px;
}
.pin-label { color: var(--text-muted); flex: 1; font-size: 0.78rem; }
.pin-genders {
  display: flex;
  gap: 0.3rem;
}
.gender-tag {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.12rem 0.4rem;
  border-radius: 4px;
  letter-spacing: 0.3px;
}
.gender-m { background: rgba(56,189,248,0.12); color: #38bdf8; border: 1px solid rgba(56,189,248,0.25); }
.gender-f { background: rgba(244,114,182,0.12); color: #f472b6; border: 1px solid rgba(244,114,182,0.25); }

.matrix-cable-range {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--mono);
  margin-top: 0.3rem;
}
.matrix-cable-val { color: var(--text-muted); font-weight: 600; }

/* OD Readout */
.od-readout {
  margin-top: 1.5rem;
  background: rgba(56,189,248,0.04);
  border: 1px solid rgba(56,189,248,0.12);
  border-radius: var(--radius);
  padding: 1rem 1.4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}
.od-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
}
.od-values { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.od-val-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-family: var(--mono);
  border: 1px solid;
  font-weight: 600;
}

/* ── M-Series Detail Cards ── */
.mseries-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.3rem;
}
.ms-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}
.ms-card:hover { transform: translateY(-4px); box-shadow: 0 10px 40px rgba(0,0,0,0.4); }
.ms-card-head {
  padding: 1.2rem;
  background: linear-gradient(135deg, var(--ms-bg-a), var(--ms-bg-b));
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.8rem;
}
.ms-series-name {
  font-size: 2.2rem;
  font-weight: 900;
  font-family: var(--mono);
  color: var(--ms-color);
  line-height: 1;
  text-shadow: 0 0 20px var(--ms-glow);
}
.ms-ip-badge {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  background: rgba(52,211,153,0.12);
  border: 1px solid rgba(52,211,153,0.25);
  color: var(--green);
  white-space: nowrap;
}
.ms-card-body { padding: 1.2rem; }
.ms-spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin-bottom: 1rem;
}
.ms-spec-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  padding: 0.6rem 0.75rem;
}
.ms-spec-key {
  font-size: 0.67rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.25rem;
}
.ms-spec-val {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
}
.ms-awg-compat {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-bottom: 1rem;
}
.ms-awg-tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.18rem 0.5rem;
  border-radius: 4px;
  background: rgba(56,189,248,0.1);
  border: 1px solid rgba(56,189,248,0.2);
  color: var(--accent);
}
.ms-pin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}
.ms-pin-table th {
  text-align: left;
  padding: 0.4rem 0.5rem;
  font-size: 0.68rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}
.ms-pin-table td {
  padding: 0.45rem 0.5rem;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(255,255,255,0.03);
  font-size: 0.78rem;
}
.ms-pin-table tr:last-child td { border-bottom: none; }
.ms-pin-num {
  font-family: var(--mono);
  font-weight: 800;
  color: var(--ms-color);
  font-size: 0.95rem;
}
.ms-keying { font-family: var(--mono); font-size: 0.72rem; color: var(--text-dim); }
.ms-awg-match { font-family: var(--mono); font-size: 0.72rem; color: var(--gold); }

/* Responsive AWG */
@media (max-width: 1100px) {
  .awg-header { grid-template-columns: 1fr; }
  .awg-legend { flex-direction: row; flex-wrap: wrap; }
}
@media (max-width: 700px) {
  .awg-tabs { width: 100%; }
  .awg-tab-btn { font-size: 0.78rem; padding: 0.45rem 0.8rem; }
  .compat-matrix { grid-template-columns: 1fr; }
  .mseries-cards { grid-template-columns: 1fr; }
  .sheath-cards { grid-template-columns: 1fr; }
  .nav-tabs { display: none; }
}

/* ============================================================
   STANDARDS & TECHNICAL REFERENCE SECTION
   ============================================================ */
.standards-guide {
  background: linear-gradient(180deg, rgba(167,139,250,0.04) 0%, rgba(56,189,248,0.02) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 1;
  padding: 4rem 0;
}
.std-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Standards Section Header */
.std-section-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: flex-start;
  margin-bottom: 2.5rem;
}
.std-badge {
  display: inline-block;
  background: linear-gradient(135deg, rgba(167,139,250,0.15), rgba(167,139,250,0.05));
  border: 1px solid rgba(167,139,250,0.3);
  border-radius: 50px;
  padding: 0.3rem 0.9rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--purple);
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.std-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 900;
  line-height: 1.1;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 0.8rem;
}
.std-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 600px;
}
.std-fact-badge {
  background: linear-gradient(135deg, rgba(52,211,153,0.12), rgba(52,211,153,0.04));
  border: 1px solid rgba(52,211,153,0.25);
  border-radius: var(--radius);
  padding: 1rem 1.4rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 160px;
}
.fact-icon {
  font-size: 2.5rem;
  color: var(--green);
  font-weight: 900;
  line-height: 1;
}
.fact-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Standards Tabs */
.std-tabs {
  display: flex;
  gap: 0.3rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 0.3rem;
  margin-bottom: 2rem;
  width: fit-content;
  flex-wrap: wrap;
}
.std-tab-btn {
  background: transparent;
  border: none;
  border-radius: 50px;
  padding: 0.5rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font);
  transition: all 0.25s;
  white-space: nowrap;
}
.std-tab-btn:hover { color: var(--text); }
.std-tab-btn.active {
  background: linear-gradient(135deg, rgba(167,139,250,0.25), rgba(56,189,248,0.2));
  color: #fff;
  box-shadow: 0 2px 12px rgba(167,139,250,0.2);
}

/* Standards Panels */
.std-panel { display: none; }
.std-panel.active { display: block; }

/* Meta banner (standard version info) */
.std-meta-banner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
  padding: 1rem 1.4rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.std-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 120px;
}
.std-meta-key {
  font-size: 0.68rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  font-weight: 600;
}
.std-meta-val {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
  font-family: var(--mono);
}

/* Scope note */
.std-scope-note {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  padding: 0.85rem 1.2rem;
  background: rgba(167,139,250,0.04);
  border: 1px solid rgba(167,139,250,0.1);
  border-left: 3px solid var(--purple);
  border-radius: var(--radius-sm);
  margin-bottom: 1.8rem;
}

/* Subsection title */
.std-subsection-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.3px;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--border);
}

/* Changes Grid */
.std-changes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.2rem;
  margin-bottom: 0.5rem;
}
.std-changes-grid.three-col {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.std-change-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--ch-color, var(--accent));
  border-radius: var(--radius);
  padding: 1.2rem;
  transition: transform 0.2s, box-shadow 0.2s;
}
.std-change-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.3);
}
.std-change-card.highlight {
  background: linear-gradient(135deg, rgba(52,211,153,0.06), rgba(52,211,153,0.01));
  border-color: rgba(52,211,153,0.4);
  border-left-color: var(--green);
}
.std-change-head {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  margin-bottom: 0.9rem;
}
.std-change-icon { font-size: 1.5rem; line-height: 1; flex-shrink: 0; }
.std-change-category {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  margin-bottom: 0.2rem;
}
.std-change-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
}
.std-verify-badge {
  margin-left: auto;
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--green);
  background: rgba(52,211,153,0.1);
  border: 1px solid rgba(52,211,153,0.25);
  border-radius: 50%;
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
}
.std-change-detail {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0.8rem;
}
.std-change-impact {
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.55;
  padding: 0.6rem 0.8rem;
  background: rgba(255,255,255,0.02);
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.05);
}
.std-change-impact strong { color: var(--orange); }

/* Coding table */
.coding-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.coding-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  min-width: 900px;
}
.coding-table thead {
  background: linear-gradient(135deg, rgba(167,139,250,0.08), rgba(56,189,248,0.05));
}
.coding-table th {
  padding: 0.8rem 0.9rem;
  text-align: left;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.coding-table td {
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--text-muted);
  vertical-align: middle;
}
.coding-table tr:hover td { background: rgba(255,255,255,0.03); }
.coding-table tr:last-child td { border-bottom: none; }
.code-badge {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 900;
  padding: 0.2rem 0.7rem;
  border-radius: 6px;
  border: 1px solid;
  white-space: nowrap;
}
.mono-cell { font-family: var(--mono); font-size: 0.78rem; color: var(--text); }
.mono-cell.dim { color: var(--text-dim); }
.mono-cell.orange { color: var(--orange); font-weight: 700; }
.ip-small-badge {
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: rgba(52,211,153,0.08);
  border: 1px solid rgba(52,211,153,0.2);
  color: var(--green);
  white-space: nowrap;
}

/* ── IP Ratings ── */
.ip-digit-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  padding: 1.4rem;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.ip-digit-box {
  flex: 1;
  min-width: 180px;
  text-align: center;
}
.ip-digit-num {
  font-family: var(--mono);
  font-size: 3rem;
  font-weight: 900;
  color: var(--purple);
  line-height: 1;
  margin-bottom: 0.3rem;
}
.ip-digit-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}
.ip-digit-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.55;
}
.ip-digit-connector {
  font-size: 2rem;
  color: var(--text-dim);
  font-weight: 900;
  flex-shrink: 0;
}
.highlight-box {
  background: rgba(56,189,248,0.04);
  border: 1px solid rgba(56,189,248,0.15);
  border-radius: var(--radius-sm);
  padding: 0.8rem;
}

.ip-ratings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.2rem;
  margin-bottom: 0.5rem;
}
.ip-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--ip-color, var(--accent));
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}
.ip-card:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(0,0,0,0.3); }
.ip-card-head {
  padding: 1.2rem 1.2rem 0.8rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.ip-code-big {
  font-family: var(--mono);
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--ip-color, var(--accent));
  line-height: 1;
  flex-shrink: 0;
  text-shadow: 0 0 20px color-mix(in srgb, var(--ip-color, var(--accent)) 30%, transparent);
}
.ip-water-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.4rem;
}
.ip-conditions {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.ip-card-body { padding: 1rem 1.2rem; }
.ip-test-row {
  display: flex;
  gap: 0.5rem;
  font-size: 0.78rem;
  margin-bottom: 0.4rem;
  flex-wrap: wrap;
}
.ip-test-key { color: var(--text-dim); font-weight: 600; white-space: nowrap; }
.ip-test-val { font-family: var(--mono); color: var(--text-muted); font-size: 0.75rem; }
.ip-real-world {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin: 0.8rem 0;
  padding: 0.7rem 0.9rem;
  background: rgba(255,255,255,0.02);
  border-radius: 6px;
  border-left: 2px solid var(--ip-color, var(--accent));
}
.ip-limits-title, .ip-examples-title {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
  margin: 0.8rem 0 0.4rem;
}
.ip-limits-list {
  padding-left: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.ip-limits-list li {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.ip-examples-wrap { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.ip-example-tag {
  font-size: 0.72rem;
  padding: 0.18rem 0.6rem;
  border-radius: 4px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-dim);
}

/* ── Gender Guide ── */
.gender-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.3rem;
}
.gender-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  border-top: 3px solid var(--g-color, var(--accent));
  transition: transform 0.25s;
}
.gender-card:hover { transform: translateY(-3px); }
.gender-card-head {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  margin-bottom: 0.9rem;
}
.gender-symbol {
  font-size: 2.8rem;
  line-height: 1;
  flex-shrink: 0;
}
.gender-label {
  font-size: 1rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.2rem;
}
.gender-isoref {
  font-size: 0.72rem;
  font-family: var(--mono);
}
.gender-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
}
.gender-diam-title, .gender-thread-title, .gender-use-title {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
  margin: 0.8rem 0 0.4rem;
}
.gender-diams { display: flex; flex-direction: column; gap: 0.35rem; }
.gender-diam-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.7rem;
  background: rgba(255,255,255,0.02);
  border-radius: 6px;
  font-size: 0.78rem;
  flex-wrap: wrap;
}
.gender-diam-key { color: var(--text-dim); flex: 1; min-width: 100px; }
.gender-diam-val { font-family: var(--mono); font-weight: 700; color: var(--g-color, var(--accent)); white-space: nowrap; }
.gender-diam-note { font-size: 0.7rem; color: var(--text-dim); flex: 2; }
.gender-thread {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.55;
  padding: 0.6rem 0.8rem;
  background: rgba(255,255,255,0.02);
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.05);
}
.gender-use {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ── IEC 60228 Conductor Classes ── */
.conductor-cls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 1.2rem;
}
.cls-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--cls-color, var(--accent));
  border-radius: var(--radius);
  padding: 1.2rem;
  transition: transform 0.2s, box-shadow 0.2s;
}
.cls-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.3);
}
.cls-card-head {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
}
.cls-label-badge {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 900;
  padding: 0.25rem 0.7rem;
  border-radius: 6px;
  border: 1px solid;
  white-space: nowrap;
}
.cls-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
}
.cls-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0.9rem;
}
.cls-props { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 0.8rem; }
.cls-prop {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  padding: 0.3rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  gap: 0.5rem;
  flex-wrap: wrap;
}
.cls-prop-k { color: var(--text-dim); font-weight: 600; }
.cls-prop-v { font-family: var(--mono); font-size: 0.75rem; color: var(--cls-color, var(--accent)); font-weight: 600; text-align: right; }
.cls-app {
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.55;
  padding: 0.5rem 0.7rem;
  background: rgba(255,255,255,0.02);
  border-radius: 6px;
  margin-bottom: 0.7rem;
  border-left: 2px solid var(--cls-color, var(--accent));
}
.cls-stds { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.cls-std-tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-dim);
}

/* Related Standards */
.related-stds-grid {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.5rem;
}
.related-std-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.7rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  flex-wrap: wrap;
}
.related-std-code {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--purple);
  min-width: 120px;
  flex-shrink: 0;
}
.related-std-scope { color: var(--text-muted); line-height: 1.5; }

/* ── ASTM Section ── */
.astm-search-wrap {
  position: relative;
  margin-bottom: 1.8rem;
}
.astm-search {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.2rem 0.85rem 3rem;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.92rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.astm-search::placeholder { color: var(--text-dim); }
.astm-search:focus {
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(167,139,250,0.15);
}
.astm-category {
  margin-bottom: 2rem;
}
.astm-cat-head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.8rem;
  padding: 1rem 1.2rem;
  background: linear-gradient(135deg, rgba(255,255,255,0.03), transparent);
  border: 1px solid var(--border);
  border-left: 4px solid var(--cat-accent, var(--accent));
  border-radius: var(--radius-sm);
  flex-wrap: wrap;
}
.astm-cat-icon { font-size: 1.8rem; flex-shrink: 0; }
.astm-cat-name {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 0.3rem;
}
.astm-cat-desc {
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.55;
}
.astm-count-badge {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.7rem;
  border-radius: 50px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-muted);
  white-space: nowrap;
}
.astm-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.astm-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  min-width: 700px;
}
.astm-table thead {
  background: rgba(255,255,255,0.02);
}
.astm-table th {
  padding: 0.65rem 1rem;
  text-align: left;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
}
.astm-table td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  vertical-align: top;
}
.astm-table tr:hover td { background: rgba(255,255,255,0.03); }
.astm-table tr:last-child td { border-bottom: none; }
.astm-code {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 900;
  color: var(--cat-accent, var(--accent));
  white-space: nowrap;
}
.astm-title {
  font-weight: 600;
  color: var(--text);
  font-size: 0.82rem;
}
.astm-scope-cell {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.55;
  max-width: 480px;
}
.astm-note {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.72rem;
  color: var(--gold);
  font-style: italic;
}
.astm-verified {
  font-size: 0.85rem;
  color: var(--green);
  font-weight: 900;
  display: block;
  text-align: center;
}

/* Responsive Standards */
@media (max-width: 1100px) {
  .std-section-header { grid-template-columns: 1fr; }
  .gender-grid { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .std-tabs { width: 100%; }
  .std-tab-btn { font-size: 0.75rem; padding: 0.4rem 0.7rem; }
  .std-changes-grid { grid-template-columns: 1fr; }
  .ip-ratings-grid { grid-template-columns: 1fr; }
  .conductor-cls-grid { grid-template-columns: 1fr; }
  .ip-digit-bar { flex-direction: column; text-align: center; }
  .ip-digit-connector { transform: rotate(90deg); }
}