/* ===== CSS Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.7);
  --text-primary: #f0f6fc;
  --text-secondary: #8b9dc3;
  --accent-cyan: #00e5ff;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-green: #10b981;
  --accent-orange: #f59e0b;
  --gradient-main: linear-gradient(135deg, #00e5ff 0%, #3b82f6 50%, #8b5cf6 100%);
  --gradient-glow: linear-gradient(135deg, rgba(0,229,255,0.15) 0%, rgba(59,130,246,0.1) 100%);
  --glass-bg: rgba(255,255,255,0.03);
  --glass-border: rgba(255,255,255,0.08);
  --radius: 16px;
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --page-gutter: clamp(16px, 15vw, 320px);
  --nav-gutter-left: clamp(16px, 3vw, 48px);
  --footer-padding-y: 20px;
  --footer-gap: 16px;
  /* 100% 相对 section 内宽；勿用 100vw，会与 section 左右 padding 叠加导致移动端横向溢出 */
  --content-max: 100%;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  overflow-x: clip;
  max-width: 100%;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: clip;
  min-width: 0;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
img, svg, video, canvas { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-blue); border-radius: 3px; }

/* ===== Navigation ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 var(--nav-gutter-left); height: 72px;
  display: flex; align-items: center; justify-content: flex-start;
  gap: 12px; min-width: 0;
  background: rgba(10, 14, 26, 0.75);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}
.navbar.scrolled { background: rgba(10, 14, 26, 0.95); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  flex: 1 1 auto;
  text-decoration: none;
  color: inherit;
}
.nav-brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  object-fit: contain;
  flex-shrink: 0;
}
.nav-logo {
  font-size: 1.3rem; font-weight: 700;
  background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; letter-spacing: 1px;
  flex-shrink: 1; min-width: 0;
}
.nav-logo span { font-weight: 400; opacity: 0.7; font-size: 0.85rem; margin-left: 8px; -webkit-text-fill-color: var(--text-secondary); }
.nav-links {
  display: flex; gap: 36px; list-style: none;
  flex-shrink: 0; flex-wrap: nowrap;
  margin-left: auto;
}
.nav-links li { flex-shrink: 0; }
.nav-links a {
  color: var(--text-secondary); font-size: 0.9rem; position: relative;
  transition: color 0.3s; white-space: nowrap;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: var(--gradient-main); transition: width 0.3s;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  padding: 10px 28px; border-radius: 50px; font-size: 0.9rem; font-weight: 600;
  background: var(--gradient-main); color: #0a0e1a; border: none; cursor: pointer;
  transition: var(--transition); box-shadow: 0 0 20px rgba(0,229,255,0.2);
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 0 40px rgba(0,229,255,0.4); }
.mobile-toggle { display: none; cursor: pointer; flex-shrink: 0; margin-left: auto; }
.mobile-toggle span { display: block; width: 24px; height: 2px; background: var(--text-primary); margin: 6px 0; transition: 0.3s; }

/* ===== Hero ===== */
.hero {
  position: relative; min-height: auto;
  display: flex; align-items: center; justify-content: center;
  padding: 120px var(--page-gutter) 56px; overflow: hidden;
}
.hero + .section {
  padding-top: 80px;
}
#hero-canvas {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 0;
}
.hero-content {
  position: relative; z-index: 2; text-align: center;
  width: 100%; max-width: var(--content-max); margin: 0 auto;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 20px; border-radius: 50px;
  background: rgba(0,229,255,0.08); border: 1px solid rgba(0,229,255,0.2);
  font-size: 0.85rem; color: var(--accent-cyan); margin-bottom: 32px;
  animation: fadeInUp 0.8s ease-out;
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-cyan); animation: pulse-dot 2s infinite; }
.hero-title {
  font-size: 4rem; font-weight: 800; line-height: 1.15; margin-bottom: 24px;
  animation: fadeInUp 0.8s ease-out 0.15s both;
}
.hero-title .gradient {
  background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-subtitle {
  font-size: 1.25rem; color: var(--text-secondary); max-width: 680px; margin: 0 auto 48px; line-height: 1.8;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}
.hero-buttons {
  display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.45s both;
}
.btn-primary {
  padding: 16px 40px; border-radius: 50px; font-size: 1rem; font-weight: 600;
  background: var(--gradient-main); color: #0a0e1a; border: none; cursor: pointer;
  transition: var(--transition); box-shadow: 0 0 30px rgba(0,229,255,0.25);
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 0 50px rgba(0,229,255,0.4); }
.btn-secondary {
  padding: 16px 40px; border-radius: 50px; font-size: 1rem; font-weight: 600;
  background: transparent; color: var(--text-primary); cursor: pointer;
  border: 1px solid rgba(255,255,255,0.15); transition: var(--transition);
}
.btn-secondary:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); background: rgba(0,229,255,0.05); }
.hero-stats {
  display: flex; justify-content: center; gap: 60px; margin-top: 56px;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}
.hero-stat-item { text-align: center; }
.hero-stat-num {
  font-size: 2.5rem; font-weight: 800;
  background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  white-space: nowrap;
}
.hero-stat-label {
  font-size: 0.85rem; color: var(--text-secondary); margin-top: 4px;
  white-space: nowrap;
}

/* Glow orbs */
.hero-orb {
  position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.3; z-index: 0;
  animation: float-orb 8s ease-in-out infinite;
}
.hero-orb-1 { width: 500px; height: 500px; background: var(--accent-cyan); top: -10%; left: -10%; }
.hero-orb-2 { width: 400px; height: 400px; background: var(--accent-purple); bottom: -10%; right: -5%; animation-delay: -4s; }
.hero-orb-3 { width: 300px; height: 300px; background: var(--accent-blue); top: 30%; right: 20%; animation-delay: -2s; opacity: 0.15; }

/* ===== Section Common ===== */
.section {
  padding: 120px var(--page-gutter); position: relative;
  overflow-x: clip;
}
.section-header {
  text-align: center; width: 100%;
  max-width: var(--content-max); margin: 0 auto 72px;
}
.section-tag {
  display: inline-block; padding: 6px 18px; border-radius: 50px;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 2px; text-transform: uppercase;
  background: rgba(0,229,255,0.08); color: var(--accent-cyan);
  border: 1px solid rgba(0,229,255,0.15); margin-bottom: 20px;
}
.section-title {
  font-size: 2.8rem; font-weight: 800; line-height: 1.2; margin-bottom: 20px;
}
.section-title .highlight { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-desc { font-size: 1.05rem; color: var(--text-secondary); line-height: 1.8; }

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0; transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.reveal.active { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===== Pain Points ===== */
.pain-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  max-width: var(--content-max); margin: 0 auto;
}
.pain-card {
  padding: 36px 28px; border-radius: var(--radius);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  transition: var(--transition); position: relative; overflow: hidden;
}
.pain-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-main); opacity: 0; transition: opacity 0.4s;
}
.pain-card:hover { transform: translateY(-6px); border-color: rgba(0,229,255,0.2); background: rgba(0,229,255,0.03); }
.pain-card:hover::before { opacity: 1; }
.pain-icon {
  width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; color: #ef4444;
  background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.2);
}
.pain-icon svg { width: 26px; height: 26px; fill: none; display: block; color: inherit; }
.pain-value { font-size: 2rem; font-weight: 800; color: #ef4444; margin-bottom: 8px; }
.pain-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 12px; }
.pain-desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; }

/* ===== Core Features ===== */
.features-bg { background: var(--bg-secondary); }
.features-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px;
  max-width: var(--content-max); margin: 0 auto;
}
.feature-card {
  padding: 44px 36px; border-radius: var(--radius);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  transition: var(--transition); position: relative; overflow: hidden;
}
.feature-card::after {
  content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(0,229,255,0.06) 0%, transparent 60%);
  opacity: 0; transition: opacity 0.5s; pointer-events: none;
}
.feature-card:hover::after { opacity: 1; }
.feature-card:hover { transform: translateY(-4px); border-color: rgba(0,229,255,0.15); }
.feature-num {
  font-size: 0.8rem; font-weight: 700; letter-spacing: 2px;
  color: var(--accent-cyan); margin-bottom: 16px; opacity: 0.7;
}
.feature-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 16px; }
.feature-desc { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.8; }
.feature-tags { display: flex; gap: 8px; margin-top: 20px; flex-wrap: wrap; }
.feature-tag {
  padding: 4px 14px; border-radius: 50px; font-size: 0.78rem;
  background: rgba(0,229,255,0.06); color: var(--accent-cyan);
  border: 1px solid rgba(0,229,255,0.12);
}

/* ===== Platform Integrations (HD brand logos) ===== */
.platforms-section { overflow: hidden; }
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  max-width: var(--content-max);
  margin: 48px auto 0;
}
.platform-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 100%;
  padding: 28px 24px;
  border-radius: var(--radius);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: var(--transition);
}
.platform-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,229,255,0.15);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}
.platform-card-logo {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  margin-bottom: 18px;
  flex-shrink: 0;
  box-sizing: border-box;
  overflow: hidden;
}
.platform-card-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  border-radius: 10px;
}
.platform-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.platform-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 14px;
  flex: 1;
}
.platform-card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.platform-card-tag {
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.78rem;
  background: rgba(0,229,255,0.06);
  color: var(--accent-cyan);
  border: 1px solid rgba(0,229,255,0.12);
}

/* ===== Automation Features ===== */
.automation-section { overflow: hidden; }
.automation-categories {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
}
.auto-category {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: var(--transition);
}
.auto-category:hover {
  border-color: rgba(0,229,255,0.18);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}
.auto-category[data-category="ai"] {
  border-color: rgba(139,92,246,0.18);
  background: linear-gradient(160deg, rgba(139,92,246,0.06) 0%, rgba(17,24,39,0.85) 55%);
}
.auto-category-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px 24px 16px;
}
.auto-category-icon {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  color: var(--accent-cyan);
  background: rgba(0,229,255,0.08);
  border: 1px solid rgba(0,229,255,0.18);
}
.auto-category[data-category="ai"] .auto-category-icon {
  color: var(--accent-purple);
  background: rgba(139,92,246,0.1);
  border-color: rgba(139,92,246,0.22);
}
.auto-category-icon svg { width: 26px; height: 26px; fill: none; display: block; color: inherit; }
.auto-category-meta { flex: 1; min-width: 0; }
.auto-category-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 4px;
}
.auto-category-title { font-size: 1.15rem; font-weight: 700; line-height: 1.3; }
.auto-category-sub { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.5; }
.auto-badge-soon {
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 0.68rem;
  font-weight: 600;
  background: rgba(139,92,246,0.12);
  color: var(--accent-purple);
  border: 1px solid rgba(139,92,246,0.25);
  white-space: nowrap;
}
.auto-category-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0 24px 24px;
}
.auto-category-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
}
.auto-category-list {
  list-style: none;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.auto-category-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.82rem;
  color: var(--text-primary);
  line-height: 1.65;
  opacity: 0.92;
}
.auto-category-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 6px rgba(0,229,255,0.45);
}
.auto-category[data-category="ai"] .auto-category-list li::before {
  background: var(--accent-purple);
  box-shadow: 0 0 6px rgba(139,92,246,0.45);
}
.automation-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  width: 100%;
  max-width: var(--content-max);
  margin: 56px auto 0;
  padding-top: 40px;
  border-top: 1px solid var(--glass-border);
  text-align: center;
}
.auto-stat-num {
  font-size: 2.2rem; font-weight: 800;
  background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.auto-stat-label { font-size: 0.85rem; color: var(--text-secondary); margin-top: 4px; }

/* ===== Linkage Demo ===== */
.linkage-section { overflow: hidden; }
.linkage-container {
  max-width: var(--content-max); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.linkage-visual {
  position: relative; padding: 40px; border-radius: var(--radius);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
}
.linkage-room {
  position: relative; width: 100%; aspect-ratio: 4/3; border-radius: 12px;
  background: linear-gradient(135deg, rgba(0,229,255,0.05), rgba(59,130,246,0.05));
  border: 1px solid rgba(0,229,255,0.1); overflow: hidden;
}
.linkage-room-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  pointer-events: none; opacity: 0.85;
}
.ld-room-pulse { animation: ld-room-breathe 4s ease-in-out infinite; }
.room-device {
  position: absolute; padding: 8px 12px 8px 10px; border-radius: 10px; font-size: 0.72rem; font-weight: 600;
  background: rgba(0,0,0,0.55); border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px); transition: all 0.6s ease;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  color: var(--text-secondary); z-index: 2;
}
.room-device-icon {
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  border-radius: 8px; background: rgba(255,255,255,0.04);
  color: #8899aa; transition: color 0.6s, background 0.6s, box-shadow 0.6s;
}
.room-device-icon svg { width: 26px; height: 26px; display: block; fill: none; color: inherit; }
.room-device-label {
  display: flex; align-items: center; gap: 5px; white-space: nowrap;
  transition: color 0.6s;
}
.room-device .status-dot { width: 5px; height: 5px; border-radius: 50%; background: #666; transition: all 0.6s; flex-shrink: 0; }
.room-device.active { border-color: rgba(16,185,129,0.35); color: var(--text-main); }
.room-device.active .room-device-icon {
  color: var(--accent-cyan); background: rgba(0,229,255,0.1);
  box-shadow: 0 0 12px rgba(0,229,255,0.15);
}
.room-device.active .status-dot { background: var(--accent-green); box-shadow: 0 0 8px var(--accent-green); }
.room-dev-pc { top: 32%; left: 50%; transform: translate(-50%, -50%); font-size: 0.82rem; padding: 10px 16px; }
.room-dev-pc .room-device-icon { width: 38px; height: 38px; }
.room-dev-pc .room-device-icon svg { width: 30px; height: 30px; }
.room-dev-ac { top: 10%; right: 8%; }
.room-dev-air { top: 10%; left: 8%; }
.room-dev-light { bottom: 14%; left: 50%; transform: translateX(-50%); }
.room-dev-supply { bottom: 14%; left: 8%; }
.room-dev-door { bottom: 14%; right: 8%; }
/* Linkage device SVG animations */
.ld-pc-screen, .ld-pc-cursor { transition: opacity 0.4s; opacity: 0.35; }
.room-dev-pc.active .ld-pc-screen { animation: ld-pc-glow 2s ease-in-out infinite; opacity: 1; }
.room-dev-pc.active .ld-pc-cursor { animation: ld-pc-blink 1.2s step-end infinite; opacity: 1; }
.ld-ac-fan { transition: transform 0.4s; transform-origin: 16px 15px; transform-box: fill-box; }
.room-dev-ac.active .ld-ac-fan { animation: ld-spin 2.5s linear infinite; }
.ld-ac-cold { opacity: 0.3; transition: opacity 0.4s; }
.room-dev-ac.active .ld-ac-cold { animation: ld-cold-pulse 1.5s ease-in-out infinite; opacity: 1; }
.ld-air-blades { transition: transform 0.4s; transform-origin: 16px 16px; transform-box: fill-box; }
.ld-air-flow { opacity: 0; transition: opacity 0.4s; }
.room-dev-air.active .ld-air-blades { animation: ld-spin 1.8s linear infinite; }
.room-dev-air.active .ld-air-flow { opacity: 1; }
.room-dev-air.active .ld-air-flow-1 { animation: ld-air-drift 1.2s ease-in-out infinite; }
.room-dev-air.active .ld-air-flow-2 { animation: ld-air-drift 1.2s ease-in-out 0.2s infinite; }
.room-dev-air.active .ld-air-flow-3 { animation: ld-air-drift 1.2s ease-in-out 0.4s infinite; }
.ld-supply-fan { transition: transform 0.4s; transform-origin: 16px 16px; transform-box: fill-box; }
.ld-supply-flow { opacity: 0; transition: opacity 0.4s; }
.room-dev-supply.active .ld-supply-fan { animation: ld-spin 1.8s linear infinite; }
.room-dev-supply.active .ld-supply-flow { opacity: 1; }
.room-dev-supply.active .ld-supply-flow-1 { animation: ld-supply-drift 1.2s ease-in-out infinite; }
.room-dev-supply.active .ld-supply-flow-2 { animation: ld-supply-drift 1.2s ease-in-out 0.2s infinite; }
.room-dev-supply.active .ld-supply-flow-3 { animation: ld-supply-drift 1.2s ease-in-out 0.4s infinite; }
.ld-light-rays, .ld-light-bulb { transition: opacity 0.4s; opacity: 0.35; transform-origin: 16px 16px; transform-box: fill-box; }
.room-dev-light.active .ld-light-rays { animation: ld-light-rays 2s ease-in-out infinite; opacity: 1; }
.room-dev-light.active .ld-light-bulb { animation: ld-light-glow 2s ease-in-out infinite; opacity: 1; }
.ld-door-screen, .ld-door-text, .ld-door-led { transition: opacity 0.4s; }
.ld-door-text { opacity: 0.35; }
.ld-door-led { opacity: 0.3; }
.room-dev-door.active .ld-door-screen { animation: ld-door-screen 2s ease-in-out infinite; }
.room-dev-door.active .ld-door-text { opacity: 1; }
.room-dev-door.active .ld-door-led { animation: ld-led-blink 1s ease-in-out infinite; opacity: 1; }
.linkage-trigger {
  position: absolute; top: 58%; left: 50%; transform: translate(-50%, -50%);
  z-index: 5; cursor: pointer;
}
.trigger-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 50px; font-size: 0.9rem; font-weight: 700;
  border: 2px solid var(--accent-cyan); color: var(--accent-cyan);
  background: rgba(0,229,255,0.08); cursor: pointer;
  transition: var(--transition); animation: trigger-glow 2s infinite;
}
.trigger-icon { width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; }
.trigger-icon svg { width: 18px; height: 18px; display: block; fill: none; color: inherit; }
.ld-trigger-ring { stroke-dasharray: 48; stroke-dashoffset: 12; opacity: 0.7; }
.trigger-btn:not(.off) .ld-trigger-ring { animation: ld-trigger-spin 3s linear infinite; }
.trigger-btn:hover { background: rgba(0,229,255,0.15); box-shadow: 0 0 30px rgba(0,229,255,0.3); }
.trigger-btn.off { border-color: var(--accent-orange); color: var(--accent-orange); background: rgba(245,158,11,0.08); animation: none; }
.trigger-btn.off:hover { background: rgba(245,158,11,0.15); box-shadow: 0 0 30px rgba(245,158,11,0.3); }
.trigger-btn.off .trigger-icon svg { animation: ld-power-pulse 2s ease-in-out infinite; }
.linkage-info h3 { font-size: 1.8rem; font-weight: 800; margin-bottom: 24px; }
.linkage-info h3 .highlight { color: var(--accent-cyan); }
.linkage-steps { list-style: none; display: flex; flex-direction: column; gap: 16px; }
.linkage-step {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 16px 20px; border-radius: 12px;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  transition: var(--transition); opacity: 0.4;
}
.linkage-step.active { opacity: 1; border-color: rgba(0,229,255,0.2); background: rgba(0,229,255,0.03); }
.step-icon {
  width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 1rem;
  background: rgba(0,229,255,0.1); color: var(--accent-cyan);
}
.step-title { font-size: 0.92rem; font-weight: 700; margin-bottom: 4px; }
.step-desc { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.6; }

/* ===== Desktop Control ===== */
.control-section { background: var(--bg-secondary); }
.control-container {
  max-width: var(--content-max); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.control-mockup {
  position: relative; display: flex; justify-content: center;
}
.control-screen {
  width: 320px; padding: 32px 24px; border-radius: 24px;
  background: linear-gradient(145deg, #1a1f35, #0f1322);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 40px rgba(0,229,255,0.05);
}
.screen-header { text-align: center; margin-bottom: 24px; }
.screen-header .room-name { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.screen-header .room-status { font-size: 0.78rem; color: var(--accent-green); }
.temp-control { text-align: center; margin-bottom: 28px; }
.temp-value { font-size: 3.5rem; font-weight: 200; color: var(--accent-cyan); line-height: 1; }
.temp-value span { font-size: 1.5rem; }
.temp-label { font-size: 0.78rem; color: var(--text-secondary); margin-top: 4px; }
.temp-slider {
  width: 100%; height: 6px; border-radius: 3px;
  background: linear-gradient(to right, var(--accent-blue), var(--accent-cyan), var(--accent-orange));
  -webkit-appearance: none; appearance: none; outline: none; margin-top: 16px;
}
.temp-slider::-webkit-slider-thumb {
  -webkit-appearance: none; width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent-cyan); cursor: pointer; box-shadow: 0 0 12px rgba(0,229,255,0.5);
}
.control-items { display: flex; flex-direction: column; gap: 12px; }
.control-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-radius: 12px;
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06);
}
.control-item-left { display: flex; align-items: center; gap: 10px; }
.control-item-icon { font-size: 1.1rem; }
.control-item-name { font-size: 0.85rem; }
.fan-speed {
  display: flex; gap: 6px;
}
.fan-btn {
  padding: 4px 12px; border-radius: 6px; border: 1px solid var(--glass-border);
  background: transparent; color: var(--text-secondary); font-size: 0.72rem; cursor: pointer;
  transition: var(--transition);
}
.fan-btn.active { background: rgba(0,229,255,0.15); border-color: var(--accent-cyan); color: var(--accent-cyan); }
.toggle-switch {
  width: 40px; height: 22px; border-radius: 11px; background: #333;
  position: relative; cursor: pointer; transition: background 0.3s;
}
.toggle-switch.on { background: var(--accent-cyan); }
.toggle-switch::after {
  content: ''; position: absolute; top: 2px; left: 2px;
  width: 18px; height: 18px; border-radius: 50%; background: white;
  transition: transform 0.3s;
}
.toggle-switch.on::after { transform: translateX(18px); }

/* ===== Smart Cluster ===== */
.cluster-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  max-width: var(--content-max); margin: 0 auto;
}
.cluster-card {
  padding: 36px; border-radius: var(--radius);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  transition: var(--transition); position: relative; overflow: hidden;
}
.cluster-card:hover { transform: translateY(-4px); border-color: rgba(0,229,255,0.15); }
.cluster-badge {
  display: inline-flex; padding: 4px 14px; border-radius: 50px;
  font-size: 0.75rem; font-weight: 600; margin-bottom: 20px;
}
.cluster-badge.high { background: rgba(239,68,68,0.1); color: #f87171; border: 1px solid rgba(239,68,68,0.2); }
.cluster-badge.low { background: rgba(16,185,129,0.1); color: #34d399; border: 1px solid rgba(16,185,129,0.2); }
.cluster-badge.air { background: rgba(245,158,11,0.1); color: #fbbf24; border: 1px solid rgba(245,158,11,0.2); }
.cluster-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.cluster-threshold { font-size: 0.82rem; color: var(--accent-cyan); margin-bottom: 16px; font-weight: 600; }
.cluster-desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.8; }

/* ===== Match & Recognition Mode ===== */
.match-mode-section { background: var(--bg-secondary); }
.match-mode-dimensions {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
  max-width: var(--content-max); margin: 0 auto 32px;
}
.match-mode-dimension {
  padding: 28px 32px; border-radius: var(--radius);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
}
.match-mode-dimension[data-dimension="entity"] {
  border-color: rgba(0,229,255,0.14);
  background: linear-gradient(160deg, rgba(0,229,255,0.04) 0%, var(--glass-bg) 60%);
}
.match-mode-dimension[data-dimension="csv"] {
  border-color: rgba(59,130,246,0.14);
  background: linear-gradient(160deg, rgba(59,130,246,0.04) 0%, var(--glass-bg) 60%);
}
.match-mode-dimension-header {
  display: flex; align-items: center; gap: 14px; margin-bottom: 10px;
}
.match-mode-dimension-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
}
.match-mode-item-icon svg,
.match-mode-dimension-icon svg,
.match-mode-card-chip-icon svg {
  width: inherit; height: inherit;
  stroke: currentColor;
  fill: none;
  display: block;
  color: inherit;
}
.match-mode-dimension-icon svg { width: 22px; height: 22px; }
.match-mode-dimension[data-dimension="entity"] .match-mode-dimension-title {
  color: var(--accent-cyan);
}
.match-mode-dimension[data-dimension="csv"] .match-mode-dimension-title {
  color: var(--accent-blue);
}
.match-mode-dimension-title {
  font-size: 1.15rem; font-weight: 700; margin-bottom: 0;
}
.match-mode-dimension-desc {
  font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 18px;
}
.match-mode-dimension-list {
  list-style: none; display: flex; flex-direction: column; gap: 14px;
}
.match-mode-dimension-list li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 0.84rem; color: var(--text-secondary); line-height: 1.7;
}
.match-mode-item-icon {
  width: 32px; height: 32px; flex-shrink: 0; margin-top: 1px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
}
.match-mode-item-icon svg { width: 16px; height: 16px; }

/* icon accent colors — one hue per mode */
.match-mode-dimension-icon[data-icon="entity"],
.match-mode-item-icon[data-icon="entity"],
.match-mode-card-chip-icon[data-icon="entity"],
.match-mode-card-chip[data-icon="entity"] {
  --icon-accent: var(--accent-cyan);
  --icon-accent-rgb: 0, 229, 255;
}
.match-mode-dimension-icon[data-icon="csv"],
.match-mode-item-icon[data-icon="csv"],
.match-mode-card-chip-icon[data-icon="csv"],
.match-mode-card-chip[data-icon="csv"] {
  --icon-accent: var(--accent-blue);
  --icon-accent-rgb: 59, 130, 246;
}
.match-mode-item-icon[data-icon="precise"],
.match-mode-card-chip-icon[data-icon="precise"],
.match-mode-card-chip[data-icon="precise"] {
  --icon-accent: #14b8a6;
  --icon-accent-rgb: 20, 184, 166;
}
.match-mode-item-icon[data-icon="fuzzy"],
.match-mode-card-chip-icon[data-icon="fuzzy"],
.match-mode-card-chip[data-icon="fuzzy"] {
  --icon-accent: var(--accent-purple);
  --icon-accent-rgb: 139, 92, 246;
}
.match-mode-item-icon[data-icon="none"],
.match-mode-card-chip-icon[data-icon="none"],
.match-mode-card-chip[data-icon="none"] {
  --icon-accent: var(--accent-orange);
  --icon-accent-rgb: 245, 158, 11;
}
.match-mode-item-icon[data-icon="auto"],
.match-mode-card-chip-icon[data-icon="auto"],
.match-mode-card-chip[data-icon="auto"] {
  --icon-accent: var(--accent-green);
  --icon-accent-rgb: 16, 185, 129;
}
.match-mode-item-icon[data-icon="manual"],
.match-mode-card-chip-icon[data-icon="manual"],
.match-mode-card-chip[data-icon="manual"] {
  --icon-accent: #818cf8;
  --icon-accent-rgb: 129, 140, 248;
}

.match-mode-dimension-icon[data-icon],
.match-mode-item-icon[data-icon],
.match-mode-card-chip-icon[data-icon] {
  color: var(--icon-accent);
  background: rgba(var(--icon-accent-rgb), 0.1);
  border: 1px solid rgba(var(--icon-accent-rgb), 0.24);
  box-shadow: 0 0 14px rgba(var(--icon-accent-rgb), 0.1);
}
.match-mode-card-chip[data-icon] {
  border-color: rgba(var(--icon-accent-rgb), 0.16);
  background: rgba(var(--icon-accent-rgb), 0.04);
  color: var(--icon-accent);
}
.match-mode-item-body { flex: 1; min-width: 0; }
.match-mode-dimension-label {
  display: inline-block; min-width: 4.5em; margin-right: 8px;
  font-weight: 700; color: var(--text-primary);
}
.match-mode-dimension-list li:has([data-icon="entity"]) .match-mode-dimension-label { color: var(--accent-cyan); }
.match-mode-dimension-list li:has([data-icon="csv"]) .match-mode-dimension-label { color: var(--accent-blue); }
.match-mode-dimension-list li:has([data-icon="precise"]) .match-mode-dimension-label { color: #14b8a6; }
.match-mode-dimension-list li:has([data-icon="fuzzy"]) .match-mode-dimension-label { color: var(--accent-purple); }
.match-mode-dimension-list li:has([data-icon="none"]) .match-mode-dimension-label { color: var(--accent-orange); }
.match-mode-dimension-list li:has([data-icon="auto"]) .match-mode-dimension-label { color: var(--accent-green); }
.match-mode-dimension-list li:has([data-icon="manual"]) .match-mode-dimension-label { color: #818cf8; }
.match-mode-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  max-width: var(--content-max); margin: 0 auto;
}
.match-mode-card {
  position: relative; padding: 24px 22px; border-radius: var(--radius);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  transition: var(--transition);
}
.match-mode-card:hover {
  transform: translateY(-4px); border-color: rgba(0,229,255,0.15);
}
.match-mode-card.is-recommended {
  border-color: rgba(0,229,255,0.25);
  background: linear-gradient(145deg, rgba(0,229,255,0.06), rgba(59,130,246,0.04));
}
.match-mode-badge {
  display: inline-flex; padding: 3px 10px; border-radius: 50px;
  font-size: 0.68rem; font-weight: 700; margin-bottom: 12px;
  background: rgba(0,229,255,0.12); color: var(--accent-cyan);
  border: 1px solid rgba(0,229,255,0.25);
}
.match-mode-card-title {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-size: 0.95rem; font-weight: 700; margin-bottom: 12px;
}
.match-mode-card-chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px 5px 6px; border-radius: 10px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
}
.match-mode-card-chip-icon {
  width: 28px; height: 28px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 7px;
}
.match-mode-card-chip-icon svg { width: 15px; height: 15px; }
.match-mode-plus {
  color: var(--text-secondary); font-weight: 800;
}
.match-mode-card-example {
  font-size: 0.8rem; color: var(--text-secondary); line-height: 1.75;
  font-style: normal;
}
.match-mode-footnote {
  max-width: var(--content-max); margin: 28px auto 0;
  text-align: center; font-size: 0.84rem; color: var(--text-secondary);
}

/* ===== Architecture ===== */
.arch-section { background: var(--bg-secondary); }
.arch-container { max-width: var(--content-max); margin: 0 auto; }
.arch-layers { display: flex; flex-direction: column; gap: 16px; }
.arch-layer {
  padding: 28px 32px; border-radius: var(--radius);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  transition: var(--transition); cursor: default;
  display: flex; align-items: center; gap: 24px;
  position: relative; overflow: hidden;
}
.arch-layer::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  transition: var(--transition);
}
.arch-layer:nth-child(1)::before { background: var(--accent-cyan); }
.arch-layer:nth-child(2)::before { background: var(--accent-blue); }
.arch-layer:nth-child(3)::before { background: var(--accent-purple); }
.arch-layer:nth-child(4)::before { background: var(--accent-green); }
.arch-layer:hover { transform: translateX(8px); border-color: rgba(0,229,255,0.15); }
.arch-num {
  width: 48px; height: 48px; border-radius: 14px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 800;
  background: rgba(0,229,255,0.08); color: var(--accent-cyan);
}
.arch-layer:nth-child(2) .arch-num { background: rgba(59,130,246,0.08); color: var(--accent-blue); }
.arch-layer:nth-child(3) .arch-num { background: rgba(139,92,246,0.08); color: var(--accent-purple); }
.arch-layer:nth-child(4) .arch-num { background: rgba(16,185,129,0.08); color: var(--accent-green); }
.arch-info { flex: 1; }
.arch-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 6px; }
.arch-desc { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.7; }

/* ===== Data & Stats ===== */
.data-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  max-width: var(--content-max); margin: 0 auto;
}
.data-card {
  text-align: center; padding: 40px 24px; border-radius: var(--radius);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  transition: var(--transition);
}
.data-card:hover { transform: translateY(-6px); border-color: rgba(0,229,255,0.2); }
.data-ring {
  width: 100px; height: 100px; margin: 0 auto 20px; position: relative;
}
.data-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.data-ring circle {
  fill: none; stroke-width: 6;
  stroke-linecap: round;
}
.data-ring .bg { stroke: rgba(255,255,255,0.05); }
.data-ring .progress {
  stroke: url(#ring-gradient); stroke-dasharray: 264; stroke-dashoffset: 264;
  transition: stroke-dashoffset 2s ease-out;
}
.data-value {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  font-size: 1.3rem; font-weight: 800; color: var(--accent-cyan);
}
.data-label { font-size: 0.9rem; font-weight: 600; margin-bottom: 8px; }
.data-desc { font-size: 0.8rem; color: var(--text-secondary); line-height: 1.6; }

/* ===== Value Props ===== */
.value-section { background: var(--bg-secondary); }
.value-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px;
  max-width: var(--content-max); margin: 0 auto;
}
.value-card {
  padding: 44px 32px; border-radius: var(--radius); text-align: center;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  transition: var(--transition); position: relative; overflow: hidden;
  min-width: 0;
}
.value-card:hover { transform: translateY(-6px); border-color: rgba(0,229,255,0.15); }
.value-icon {
  width: 64px; height: 64px; border-radius: 18px; margin: 0 auto 24px;
  display: flex; align-items: center; justify-content: center; font-size: 1.8rem;
}
.value-card:nth-child(1) .value-icon { background: rgba(0,229,255,0.1); }
.value-card:nth-child(2) .value-icon { background: rgba(59,130,246,0.1); }
.value-card:nth-child(3) .value-icon { background: rgba(139,92,246,0.1); }
.value-number { font-size: 3rem; font-weight: 800; margin-bottom: 8px; }
.value-card:nth-child(1) .value-number { color: var(--accent-cyan); }
.value-card:nth-child(2) .value-number { color: var(--accent-blue); }
.value-card:nth-child(3) .value-number { color: var(--accent-purple); }
.value-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; }
.value-desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.8; }

/* ===== Deployment ===== */
.deploy-timeline {
  max-width: var(--content-max); margin: 0 auto;
  display: flex; flex-direction: column; gap: 0;
  position: relative;
}
.deploy-timeline::before {
  content: ''; position: absolute; left: 39px; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple), var(--accent-blue), var(--accent-green));
}
.deploy-step {
  display: flex; gap: 28px; padding: 28px 0; position: relative;
}
.deploy-dot {
  width: 20px; height: 20px; border-radius: 50%; flex-shrink: 0;
  margin-top: 4px; position: relative; z-index: 2;
  border: 3px solid var(--accent-cyan); background: var(--bg-primary);
  transition: var(--transition);
}
.deploy-step:nth-child(2) .deploy-dot { border-color: var(--accent-purple); }
.deploy-step:nth-child(3) .deploy-dot { border-color: var(--accent-blue); }
.deploy-step:nth-child(4) .deploy-dot { border-color: var(--accent-green); }
.deploy-content {
  padding: 24px 28px; border-radius: var(--radius); flex: 1;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  transition: var(--transition);
}
.deploy-step:hover .deploy-content { border-color: rgba(0,229,255,0.15); transform: translateX(8px); }
.deploy-step-num { font-size: 0.78rem; font-weight: 700; color: var(--accent-cyan); margin-bottom: 8px; letter-spacing: 1px; }
.deploy-step-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.deploy-step-desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.8; }
.deploy-highlight {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 14px;
  padding: 6px 16px; border-radius: 50px; font-size: 0.78rem; font-weight: 600;
  background: rgba(0,229,255,0.06); color: var(--accent-cyan);
  border: 1px solid rgba(0,229,255,0.12);
}

/* ===== CTA ===== */
.cta-section {
  padding: 120px var(--page-gutter); text-align: center;
  position: relative; overflow: hidden; z-index: 1;
}
.cta-glow {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.cta-content {
  position: relative; z-index: 2;
  width: 100%; max-width: var(--content-max); margin: 0 auto;
}
.cta-title { font-size: 2.8rem; font-weight: 800; margin-bottom: 20px; }
.cta-title .highlight { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.cta-desc { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 40px; line-height: 1.8; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.download-dropdown { position: relative; display: inline-flex; }
.download-dropdown-toggle {
  display: inline-flex; align-items: center; gap: 8px;
}
.download-dropdown-menu {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%) translateY(6px);
  min-width: 168px; padding: 8px; border-radius: 14px;
  background: rgba(10, 14, 26, 0.96); border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 16px 40px rgba(0,0,0,0.45);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 100;
}
#ctaDownloadDropdown .download-dropdown-menu {
  top: auto; bottom: calc(100% + 10px);
  transform: translateX(-50%) translateY(-6px);
}
#ctaDownloadDropdown.open .download-dropdown-menu,
#ctaDownloadDropdown:focus-within .download-dropdown-menu {
  transform: translateX(-50%) translateY(0);
}
.download-dropdown.open .download-dropdown-menu,
.download-dropdown:focus-within .download-dropdown-menu {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.download-dropdown-item {
  display: block; width: 100%; padding: 12px 16px; border-radius: 10px;
  font-size: 0.95rem; font-weight: 600; color: var(--text-primary); text-align: left;
  text-decoration: none; background: transparent; border: none; cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.download-dropdown-item:hover,
.download-dropdown-item:focus-visible {
  background: rgba(0,229,255,0.08); color: var(--accent-cyan); outline: none;
}
.download-dropdown-item.is-disabled {
  color: var(--text-secondary); cursor: not-allowed; opacity: 0.72;
}
.download-dropdown-item.is-disabled:hover { background: transparent; color: var(--text-secondary); }

/* ===== Footer ===== */
.footer {
  flex-shrink: 0;
  margin-top: auto;
  padding: var(--footer-padding-y) var(--nav-gutter-left);
  border-top: 1px solid var(--glass-border);
}
.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: var(--footer-gap);
  width: 100%;
  min-height: 1.75rem;
}
.footer .nav-logo {
  font-size: 1rem;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
  flex-shrink: 1;
  min-width: 0;
}
.footer .nav-logo span {
  font-weight: 400;
  opacity: 0.7;
  font-size: 0.85rem;
  margin-left: 8px;
  -webkit-text-fill-color: var(--text-secondary);
}
.footer-logo {
  white-space: nowrap;
  line-height: 1.75rem;
}
.footer-logo:first-of-type { justify-self: start; }
.footer-logo-right { justify-self: end; text-align: right; }
.footer-copy {
  justify-self: center;
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.75rem;
  text-align: center;
  white-space: nowrap;
}
.footer-copy a {
  color: var(--text-secondary);
  transition: color 0.3s;
}
.footer-copy a:hover { color: var(--accent-cyan); }

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
@keyframes float-orb {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(30px, -30px); }
  66% { transform: translate(-20px, 20px); }
}
@keyframes trigger-glow {
  0%, 100% { box-shadow: 0 0 15px rgba(0,229,255,0.2); }
  50% { box-shadow: 0 0 30px rgba(0,229,255,0.4); }
}
@keyframes counter-up {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes ld-room-breathe {
  0%, 100% { fill: rgba(0,229,255,0.03); stroke: rgba(0,229,255,0.08); }
  50% { fill: rgba(0,229,255,0.06); stroke: rgba(0,229,255,0.14); }
}
@keyframes ld-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes ld-pc-glow {
  0%, 100% { fill-opacity: 0.2; }
  50% { fill-opacity: 0.55; }
}
@keyframes ld-pc-blink {
  0%, 60% { opacity: 1; }
  61%, 100% { opacity: 0.2; }
}
@keyframes ld-cold-pulse {
  0%, 100% { opacity: 0.5; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(-1px); }
}
@keyframes ld-air-drift {
  0%, 100% { opacity: 0.3; transform: translateX(0); }
  50% { opacity: 0.9; transform: translateX(2px); }
}
@keyframes ld-supply-drift {
  0%, 100% { opacity: 0.3; transform: translateX(0); }
  50% { opacity: 0.9; transform: translateX(3px); }
}
@keyframes ld-light-rays {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.08); }
}
@keyframes ld-light-glow {
  0%, 100% { fill-opacity: 0.15; }
  50% { fill-opacity: 0.45; }
}
@keyframes ld-door-screen {
  0%, 100% { fill-opacity: 0.1; }
  50% { fill-opacity: 0.35; }
}
@keyframes ld-led-blink {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}
@keyframes ld-trigger-spin {
  from { stroke-dashoffset: 48; }
  to { stroke-dashoffset: 0; }
}
@keyframes ld-power-pulse {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}

/* ===== Demo Interactive (scoped nc-demo) ===== */
.demo-section { background: var(--bg-secondary); }
.demo-shell {
  width: min(100%, var(--content-max)); max-width: var(--content-max); margin: 0 auto;
  display: flex; align-items: stretch;
  min-height: clamp(760px, 88vh, 980px);
  border-radius: calc(var(--radius) + 4px);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  overflow: hidden;
  box-shadow: 0 28px 72px rgba(0, 0, 0, 0.32);
}
.demo-viewport {
  isolation: isolate;
}
.demo-sidebar {
  flex: 0 0 clamp(132px, 11vw, 168px);
  display: flex; flex-direction: column; gap: 6px;
  padding: 16px 10px;
  border-right: 1px solid var(--glass-border);
  background: rgba(0, 0, 0, 0.18);
}
.demo-sidebar-label {
  padding: 0 10px 8px;
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-secondary); opacity: 0.72;
}
.demo-nav-item {
  display: flex; align-items: center; gap: 10px;
  width: 100%; padding: 12px 14px;
  border: 1px solid transparent; border-radius: 12px;
  background: transparent; color: var(--text-secondary);
  font-size: 0.86rem; font-weight: 600; text-align: left;
  cursor: pointer; transition: var(--transition);
}
.demo-nav-item svg {
  flex-shrink: 0; width: 18px; height: 18px; opacity: 0.72;
  display: block; color: inherit; fill: none;
}
.demo-nav-item:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(0, 229, 255, 0.12);
}
.demo-nav-item.active {
  color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.32);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.1);
}
.demo-nav-item.active svg { opacity: 1; color: var(--accent-cyan); }
.demo-viewport {
  flex: 1 1 auto; min-width: 0; min-height: 0;
  display: flex; flex-direction: column;
  background: #f3f4f8;
  position: relative;
}
.demo-fullscreen-btn {
  position: absolute; top: 10px; right: 10px; z-index: 20;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px;
  border: 1px solid rgba(0, 229, 255, 0.28);
  border-radius: 10px;
  background: rgba(10, 14, 26, 0.72);
  color: var(--accent-cyan);
  font-size: 0.78rem; font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.28);
}
.demo-fullscreen-btn:hover {
  background: rgba(0, 229, 255, 0.12);
  border-color: rgba(0, 229, 255, 0.45);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.18);
}
.demo-fullscreen-btn .demo-fs-icon {
  width: 16px; height: 16px; flex-shrink: 0;
}
.demo-fullscreen-btn[aria-pressed="true"] .demo-fs-icon-enter { display: none; }
.demo-fullscreen-btn[aria-pressed="true"] .demo-fs-icon-exit { display: block; }
.demo-fullscreen-btn[aria-pressed="false"] .demo-fs-icon-exit { display: none; }
body.demo-fs-active { overflow: hidden; background: #000; }
.demo-shell.demo-shell--fullscreen,
.demo-shell:fullscreen,
.demo-shell:-webkit-full-screen {
  position: fixed; inset: 0; z-index: 10000;
  display: flex !important;
  flex-direction: row !important;
  align-items: stretch !important;
  width: 100vw !important; max-width: none !important;
  height: 100vh !important; min-height: 0 !important;
  margin: 0; border-radius: 0;
  box-shadow: none;
}
/* Fullscreen: always desktop demo layout (override mobile/tablet breakpoints) */
.demo-shell.demo-shell--fullscreen .demo-sidebar,
.demo-shell:fullscreen .demo-sidebar,
.demo-shell:-webkit-full-screen .demo-sidebar {
  flex: 0 0 clamp(132px, 11vw, 168px) !important;
  display: flex !important;
  flex-direction: column !important;
  flex-wrap: nowrap !important;
  border-right: 1px solid var(--glass-border) !important;
  border-bottom: none !important;
  padding: 16px 10px !important;
  gap: 6px !important;
  position: relative;
  z-index: 5;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.demo-shell.demo-shell--fullscreen .demo-sidebar-label,
.demo-shell:fullscreen .demo-sidebar-label,
.demo-shell:-webkit-full-screen .demo-sidebar-label {
  display: block !important;
}
.demo-shell.demo-shell--fullscreen .demo-nav-item,
.demo-shell:fullscreen .demo-nav-item,
.demo-shell:-webkit-full-screen .demo-nav-item {
  flex: 0 0 auto !important;
  width: 100% !important;
  min-width: 0 !important;
  justify-content: flex-start !important;
  padding: 12px 14px !important;
  font-size: 0.86rem !important;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.demo-shell.demo-shell--fullscreen .demo-nav-item span,
.demo-shell:fullscreen .demo-nav-item span,
.demo-shell:-webkit-full-screen .demo-nav-item span {
  white-space: nowrap !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
}
.demo-shell.demo-shell--fullscreen .demo-viewport,
.demo-shell:fullscreen .demo-viewport,
.demo-shell:-webkit-full-screen .demo-viewport {
  flex: 1 1 auto !important;
  min-width: 0 !important;
  min-height: 0 !important;
  overflow: hidden !important;
}
.demo-shell.demo-shell--fullscreen .demo-iframe,
.demo-shell:fullscreen .demo-iframe,
.demo-shell:-webkit-full-screen .demo-iframe {
  min-height: 0 !important;
  height: 100% !important;
}
.demo-shell.demo-shell--fullscreen .demo-panel.active,
.demo-shell:fullscreen .demo-panel.active,
.demo-shell:-webkit-full-screen .demo-panel.active {
  flex: 1 1 auto !important;
  min-height: 0 !important;
  height: 100% !important;
  overflow: hidden !important;
}
.demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host,
.demo-shell:fullscreen .demo-panel-dashboard-host,
.demo-shell:-webkit-full-screen .demo-panel-dashboard-host {
  flex: 1 1 0 !important;
  height: auto !important;
  min-height: 0 !important;
  padding: 8px !important;
  overflow: hidden !important;
  align-items: center !important;
  justify-content: center !important;
  box-sizing: border-box !important;
}
.demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host .nd-header,
.demo-shell:fullscreen .demo-panel-dashboard-host .nd-header,
.demo-shell:-webkit-full-screen .demo-panel-dashboard-host .nd-header,
.demo-shell.demo-shell--fullscreen .demo-dashboard-host .nd-header,
.demo-shell:fullscreen .demo-dashboard-host .nd-header,
.demo-shell:-webkit-full-screen .demo-dashboard-host .nd-header {
  grid-template-columns: 1fr auto 1fr !important;
  gap: 12px !important;
  text-align: initial !important;
}
.demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host .nd-header-actions,
.demo-shell:fullscreen .demo-panel-dashboard-host .nd-header-actions,
.demo-shell:-webkit-full-screen .demo-panel-dashboard-host .nd-header-actions,
.demo-shell.demo-shell--fullscreen .demo-dashboard-host .nd-header-actions,
.demo-shell:fullscreen .demo-dashboard-host .nd-header-actions,
.demo-shell:-webkit-full-screen .demo-dashboard-host .nd-header-actions {
  justify-self: end !important;
}
.demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host .nd-grid,
.demo-shell:fullscreen .demo-panel-dashboard-host .nd-grid,
.demo-shell:-webkit-full-screen .demo-panel-dashboard-host .nd-grid,
.demo-shell.demo-shell--fullscreen .demo-dashboard-host .nd-grid,
.demo-shell:fullscreen .demo-dashboard-host .nd-grid,
.demo-shell:-webkit-full-screen .demo-dashboard-host .nd-grid,
.demo-shell.demo-shell--fullscreen #page-dashboard .nd-grid,
.demo-shell:fullscreen #page-dashboard .nd-grid,
.demo-shell:-webkit-full-screen #page-dashboard .nd-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  grid-template-rows: repeat(2, minmax(0, 1fr)) !important;
  grid-auto-rows: unset !important;
  gap: 6px !important;
  min-height: 0 !important;
}
.demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host .nd-auto-stats,
.demo-shell:fullscreen .demo-panel-dashboard-host .nd-auto-stats,
.demo-shell:-webkit-full-screen .demo-panel-dashboard-host .nd-auto-stats,
.demo-shell.demo-shell--fullscreen .demo-dashboard-host .nd-auto-stats,
.demo-shell:fullscreen .demo-dashboard-host .nd-auto-stats,
.demo-shell:-webkit-full-screen .demo-dashboard-host .nd-auto-stats,
.demo-shell.demo-shell--fullscreen #page-dashboard .nd-auto-stats,
.demo-shell:fullscreen #page-dashboard .nd-auto-stats,
.demo-shell:-webkit-full-screen #page-dashboard .nd-auto-stats {
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
}
.demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host .nd-env-triggers,
.demo-shell:fullscreen .demo-panel-dashboard-host .nd-env-triggers,
.demo-shell:-webkit-full-screen .demo-panel-dashboard-host .nd-env-triggers,
.demo-shell.demo-shell--fullscreen .demo-dashboard-host .nd-env-triggers,
.demo-shell:fullscreen .demo-dashboard-host .nd-env-triggers,
.demo-shell:-webkit-full-screen .demo-dashboard-host .nd-env-triggers,
.demo-shell.demo-shell--fullscreen #page-dashboard .nd-env-triggers,
.demo-shell:fullscreen #page-dashboard .nd-env-triggers,
.demo-shell:-webkit-full-screen #page-dashboard .nd-env-triggers {
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
}
.demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host .nd-stats-row,
.demo-shell:fullscreen .demo-panel-dashboard-host .nd-stats-row,
.demo-shell:-webkit-full-screen .demo-panel-dashboard-host .nd-stats-row,
.demo-shell.demo-shell--fullscreen .demo-dashboard-host .nd-stats-row,
.demo-shell:fullscreen .demo-dashboard-host .nd-stats-row,
.demo-shell:-webkit-full-screen .demo-dashboard-host .nd-stats-row {
  flex-direction: row !important;
  align-items: center !important;
  flex-wrap: wrap !important;
  gap: 10px !important;
}
.demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host .nd-outer-frame,
.demo-shell:fullscreen .demo-panel-dashboard-host .nd-outer-frame,
.demo-shell:-webkit-full-screen .demo-panel-dashboard-host .nd-outer-frame {
  margin: 6px 8px !important;
  padding: 10px 12px 8px !important;
}
/* Mobile fullscreen: rotate 90° in portrait → landscape desktop layout */
.demo-fs-rotate-host {
  position: fixed;
  z-index: 10000;
  overflow: hidden;
  background: #0a0e1a;
}
body.demo-fs-mobile.demo-fs-portrait .demo-fs-rotate-host {
  top: 50%;
  left: 50%;
  width: 100vh;
  height: 100vw;
  max-width: none;
  max-height: none;
  transform: translate(-50%, -50%) rotate(90deg);
  transform-origin: center center;
}
body.demo-fs-mobile.demo-fs-landscape .demo-fs-rotate-host {
  inset: 0;
  width: 100%;
  height: 100%;
  transform: none;
}
body.demo-fs-mobile .demo-fs-rotate-host > .demo-shell.demo-shell--fullscreen {
  position: relative !important;
  inset: auto !important;
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  min-height: 0 !important;
  margin: 0 !important;
  transform: none !important;
  flex-direction: row !important;
  border-radius: 0 !important;
  overflow: hidden !important;
}
body.demo-fs-mobile.demo-fs-active .demo-shell.demo-shell--fullscreen .demo-sidebar {
  display: flex !important;
}
body.demo-fs-mobile.demo-fs-active .demo-shell.demo-shell--fullscreen .demo-fullscreen-btn {
  display: none !important;
}
body.demo-fs-mobile.demo-fs-active .demo-shell.demo-shell--fullscreen .demo-viewport {
  flex: 1 1 auto !important;
  min-width: 0 !important;
  min-height: 0 !important;
  overflow: hidden !important;
}
body.demo-fs-mobile.demo-fs-active .demo-shell.demo-shell--fullscreen .demo-iframe {
  width: 100% !important;
  height: 100% !important;
  min-height: 0 !important;
  border: 0 !important;
}
body.demo-fs-mobile.demo-fs-active .demo-shell.demo-shell--fullscreen .demo-panel,
body.demo-fs-mobile.demo-fs-active .demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host {
  flex: 1 1 0 !important;
  min-height: 0 !important;
  height: auto !important;
  overflow: hidden !important;
}
body.demo-fs-mobile.demo-fs-active .demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host #page-dashboard:not(.demo-dashboard-scaled),
body.demo-fs-mobile.demo-fs-active .demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host #page-dashboard:not(.demo-dashboard-scaled) .nd-dash {
  min-height: 100% !important;
  height: 100% !important;
}
body.demo-fs-mobile.demo-fs-active .demo-shell.demo-shell--fullscreen .demo-panel-dashboard-host .nd-grid {
  flex: 1 !important;
  min-height: 0 !important;
}
.demo-fs-exit-btn {
  display: none;
  position: fixed;
  top: calc(10px + env(safe-area-inset-top, 0px));
  right: calc(10px + env(safe-area-inset-right, 0px));
  z-index: 10005;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border: 1px solid rgba(0, 229, 255, 0.35);
  border-radius: 10px;
  background: rgba(10, 14, 26, 0.94);
  color: var(--accent-cyan);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}
.demo-fs-exit-btn.visible { display: inline-flex; }
.demo-fs-exit-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.demo-viewport:has(#demo-panel-subcontrol.active) {
  background: #0f1419;
}
.demo-panel {
  display: none; flex: 1 1 auto; min-height: 0;
  animation: fadeInUp 0.35s ease-out;
}
.demo-panel.active { display: flex; flex-direction: column; }
.demo-panel#demo-panel-subcontrol.active {
  align-items: stretch;
  justify-content: stretch;
  padding: 0;
  background: #0f1419;
}
.demo-panel#demo-panel-dashboard.active {
  background: #010408;
  overflow: hidden;
}
.demo-iframe {
  display: block; flex: 1 1 auto;
  width: 100%; min-height: 0; height: 100%;
  border: 0; border-radius: 0;
  background: transparent;
}
#demo-panel-subcontrol .demo-iframe {
  flex: 1 1 auto;
  width: 100%;
  height: 100%;
  min-height: 0;
  max-height: none;
}
.demo-panel-dashboard-host {
  flex: 1 1 0;
  min-height: 0;
  min-width: 0;
  width: 100%;
  overflow: hidden;
  padding: 0;
  box-sizing: border-box;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.demo-dashboard-scale-stage {
  position: relative;
  flex-shrink: 0;
  overflow: hidden;
  pointer-events: none;
  transition: none;
}
.demo-dashboard-scale-stage > #page-dashboard {
  pointer-events: auto;
}
.demo-panel-dashboard-host #page-dashboard.demo-dashboard-scaled {
  position: relative;
  flex-shrink: 0;
  max-width: none;
  transition: none;
}
/* 内嵌演示大屏固定桌面 3×2 布局，避免页面断点改列数后内容超出设计高度被裁切 */
.demo-panel-dashboard-host .nd-header {
  grid-template-columns: 1fr auto 1fr !important;
  gap: 12px !important;
  text-align: initial !important;
}
.demo-panel-dashboard-host .nd-header-actions {
  justify-self: end !important;
}
.demo-panel-dashboard-host .nd-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  grid-template-rows: repeat(2, minmax(0, 1fr)) !important;
  grid-auto-rows: unset !important;
  gap: 6px !important;
  min-height: 0 !important;
}
.demo-panel-dashboard-host .nd-auto-stats,
.demo-panel-dashboard-host .nd-env-triggers {
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
}
.demo-panel-dashboard-host .nd-stats-row {
  flex-direction: row !important;
  align-items: center !important;
  flex-wrap: wrap !important;
  gap: 10px !important;
}
.demo-panel-dashboard-host .nd-outer-frame {
  margin: 6px 8px !important;
  padding: 10px 12px 8px !important;
}
.demo-panel-dashboard-host #page-dashboard {
  --nd-cyan: #00d4ff; --nd-cyan-bright: #00f0ff; --nd-magenta: #d946ef;
  --nd-exhaust: #f87171; --nd-supply: #34d399;
  --nd-panel-bg: rgba(4,12,32,0.9); --nd-frame-bg: rgba(3,10,28,0.94);
  --nd-border: rgba(0,212,255,0.55); --nd-border-dim: rgba(0,180,220,0.22);
  --nd-glow: rgba(0,212,255,0.35); --nd-text-dim: rgba(140,190,230,0.75);
  --nd-fs-xxs: 11px; --nd-fs-xs: 12px; --nd-fs-sm: 13px; --nd-fs-lg: 16px;
  --nd-fs-stat: 20px;
  --nd-fs-header: 16px;
  min-height: 0;
  height: auto;
  border-radius: 0;
  overflow: hidden;
  border: none;
  background: #010408;
}
.demo-panel-dashboard-host.demo-dashboard-host #page-dashboard {
  min-height: 0 !important;
  border: none !important;
  border-radius: 0 !important;
}
.demo-panel-dashboard-host.demo-dashboard-host .nd-dash {
  min-height: 0 !important;
  height: 100%;
}
.demo-panel-dashboard-host .nd-dash {
  min-height: 0;
  height: 100%;
}
.demo-panel-dashboard-host .nd-outer-frame {
  height: 100%;
}
.demo-viewport:has(#demo-panel-dashboard.active) {
  background: #010408;
  overflow: hidden;
}


/* --- 数据大屏内嵌（通用 demo-dashboard-host 样式，宿主容器自身无此类） --- */
.demo-dashboard-host #page-dashboard {
  --nd-cyan: #00d4ff; --nd-cyan-bright: #00f0ff; --nd-magenta: #d946ef;
  --nd-exhaust: #f87171; --nd-supply: #34d399;
  --nd-panel-bg: rgba(4,12,32,0.9); --nd-frame-bg: rgba(3,10,28,0.94);
  --nd-border: rgba(0,212,255,0.55); --nd-border-dim: rgba(0,180,220,0.22);
  --nd-glow: rgba(0,212,255,0.35); --nd-text-dim: rgba(140,190,230,0.75);
  --nd-fs-xxs: 11px; --nd-fs-xs: 12px; --nd-fs-sm: 13px; --nd-fs-lg: 16px;
  --nd-fs-stat: clamp(18px, 2vw, 24px); --nd-fs-header: clamp(14px, 1.5vw, 20px);
  min-height: 640px; border-radius: var(--radius); overflow: hidden;
  border: 1px solid rgba(0,229,255,0.2); background: #010408;
}
.demo-dashboard-host .nd-dash {
  position: relative; min-height: 640px; display: flex; flex-direction: column;
  background: radial-gradient(ellipse 100% 40% at 50% 0%, rgba(0,80,160,0.14) 0%, transparent 55%),
    linear-gradient(180deg, #010408 0%, #040c1a 45%, #020610 100%);
}
.demo-dashboard-host .nd-dash::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(0,180,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,180,255,0.025) 1px, transparent 1px);
  background-size: 40px 40px; opacity: 0.6;
}
.demo-dashboard-host .nd-outer-frame {
  position: relative; z-index: 1; flex: 1; display: flex; flex-direction: column;
  gap: 6px; margin: 6px 8px; padding: 10px 12px 8px;
  border: 1px solid var(--nd-border); background: var(--nd-frame-bg);
  box-shadow: 0 0 30px var(--nd-glow), inset 0 0 80px rgba(0,60,140,0.06);
  clip-path: polygon(0 16px, 16px 0, calc(100% - 16px) 0, 100% 16px, 100% calc(100% - 16px), calc(100% - 16px) 100%, 16px 100%, 0 calc(100% - 16px));
}
.demo-dashboard-host .nd-header {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px;
  padding: 0 4px 6px;
}
.demo-dashboard-host .nd-header-title { font-size: var(--nd-fs-header); font-weight: 700; letter-spacing: 0.12em; text-shadow: 0 0 20px rgba(0,212,255,0.6); color: #fff; }
.demo-dashboard-host .nd-header-sub { margin-top: 2px; font-size: var(--nd-fs-sm); color: rgba(140,190,230,0.88); }
.demo-dashboard-host .nd-header-meta { margin-top: 4px; font-size: var(--nd-fs-xs); color: var(--nd-text-dim); }
.demo-dashboard-host .nd-header-actions { justify-self: end; }
.demo-dashboard-host .nd-clock { font-family: Consolas, monospace; font-size: var(--nd-fs-sm); color: var(--nd-cyan); }
.demo-dashboard-host .nd-grid {
  flex: 1; display: grid; grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(2, minmax(180px, 1fr));
  gap: 6px; min-height: 0;
}
.demo-panel-dashboard-host.demo-dashboard-host .nd-grid {
  grid-template-rows: repeat(2, minmax(0, 1fr));
}
.demo-dashboard-host .nd-panel {
  position: relative; display: flex; flex-direction: column; min-height: 0;
  padding: 0 6px 6px; background: var(--nd-panel-bg);
  border: 1px solid var(--nd-border-dim); box-shadow: inset 0 0 40px rgba(0,40,80,0.15);
  clip-path: polygon(0 10px, 10px 0, calc(100% - 10px) 0, 100% 10px, 100% calc(100% - 10px), calc(100% - 10px) 100%, 10px 100%, 0 calc(100% - 10px));
  --nd-panel-accent: var(--nd-cyan-bright);
}
.demo-dashboard-host .nd-grid .nd-panel:nth-child(1) { --nd-panel-accent: #34d399; }
.demo-dashboard-host .nd-grid .nd-panel:nth-child(2) { --nd-panel-accent: #22d3ee; }
.demo-dashboard-host .nd-grid .nd-panel:nth-child(3) { --nd-panel-accent: #fb7185; }
.demo-dashboard-host .nd-grid .nd-panel:nth-child(4) { --nd-panel-accent: #a78bfa; }
.demo-dashboard-host .nd-grid .nd-panel:nth-child(5) { --nd-panel-accent: #fbbf24; }
.demo-dashboard-host .nd-grid .nd-panel:nth-child(6) { --nd-panel-accent: #4ade80; }
.demo-dashboard-host .nd-panel::after {
  content: ''; position: absolute; top: 0; left: 12px; right: 12px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--nd-panel-accent), transparent); opacity: 0.9;
}
.demo-dashboard-host .nd-panel-title { text-align: center; padding: 6px 0 2px; font-size: calc(var(--nd-fs-sm) * 1.6); font-weight: 700; color: var(--nd-panel-accent); }
.demo-dashboard-host .nd-panel-sub { text-align: center; font-size: var(--nd-fs-xxs); color: var(--nd-text-dim); margin-bottom: 4px; }
.demo-dashboard-host .nd-panel-body { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.demo-dashboard-host .nd-chart { flex: 1; min-height: 100px; width: 100%; }
.demo-dashboard-host .nd-stats-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 4px; }
.demo-dashboard-host .nd-stat-value { font-family: Consolas, monospace; font-size: var(--nd-fs-stat); font-weight: 700; color: var(--nd-panel-accent); }
.demo-dashboard-host .nd-stat-label, .demo-dashboard-host .nd-stat-chip { font-size: var(--nd-fs-xs); color: var(--nd-text-dim); }
.demo-dashboard-host .nd-stat-chip .num { color: var(--nd-magenta); font-weight: 600; }
.demo-dashboard-host .nd-vent-stats { display: flex; flex-direction: column; gap: 8px; margin-bottom: 4px; }
.demo-dashboard-host .nd-vent-item { display: flex; align-items: center; gap: 8px; font-size: var(--nd-fs-xs); color: var(--nd-text-dim); }
.demo-dashboard-host .nd-vent-bar-wrap { flex: 1; height: 8px; background: rgba(0,60,100,0.4); border-radius: 4px; overflow: hidden; }
.demo-dashboard-host .nd-vent-bar-fill { height: 100%; border-radius: 4px; transition: width 0.8s; }
.demo-dashboard-host .nd-vent-bar-fill.exhaust { background: linear-gradient(90deg, #ef4444, var(--nd-exhaust)); }
.demo-dashboard-host .nd-vent-bar-fill.supply { background: linear-gradient(90deg, #059669, var(--nd-supply)); }
.demo-dashboard-host .nd-auto-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-bottom: 4px; }
.demo-dashboard-host .nd-auto-card { padding: 6px 4px; text-align: center; border: 1px solid var(--nd-border-dim); background: rgba(0,35,70,0.45); }
.demo-dashboard-host .nd-auto-card .val { font-family: Consolas, monospace; font-size: var(--nd-fs-lg); font-weight: 700; color: var(--nd-cyan-bright); }
.demo-dashboard-host .nd-sched-block { padding: 5px 6px; border: 1px solid var(--nd-border-dim); background: rgba(0,35,70,0.45); margin-bottom: 4px; }
.demo-dashboard-host .nd-env-triggers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; }
.demo-dashboard-host .nd-sched-block .val { font-family: Consolas, monospace; font-size: var(--nd-fs-lg); font-weight: 700; color: var(--nd-panel-accent); }
.demo-dashboard-host .nd-ticker {
  flex-shrink: 0;
  overflow: hidden;
  padding: 8px 0;
  border-top: 1px solid var(--nd-border-dim);
  background: rgba(0,0,0,0.3);
}
.demo-dashboard-host .nd-ticker-track { display: flex; gap: 40px; white-space: nowrap; animation: demoTicker 30s linear infinite; font-size: var(--nd-fs-xs); color: var(--nd-text-dim); }
@keyframes demoTicker { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

.demo-panel-dashboard-host.demo-dashboard-host .nd-outer-frame {
  min-height: 0;
  overflow: hidden;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root {
    --page-gutter: clamp(16px, 4vw, 48px);
    --nav-gutter-left: clamp(16px, 3vw, 32px);
  }

  .navbar {
    padding: 0 var(--nav-gutter-left);
    height: 64px;
  }
  .navbar .nav-brand {
    flex: 1 1 auto;
    min-width: 0;
    max-width: none;
  }
  .navbar .nav-brand-icon {
    width: 34px;
    height: 34px;
  }
  .navbar .nav-logo {
    font-size: 1rem;
    flex: 1 1 auto;
    min-width: 0;
    max-width: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .navbar .nav-logo span { display: none; }
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .nav-links.show {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 16px var(--page-gutter) 24px;
    background: rgba(10, 14, 26, 0.98);
    border-bottom: 1px solid var(--glass-border);
    gap: 12px;
    z-index: 999;
  }
  .nav-links.show a {
    display: block;
    padding: 10px 0;
    font-size: 0.95rem;
    white-space: normal;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px 8px;
  }
  .hero-stat-item { min-width: 0; }
  .hero-stat-num { font-size: clamp(1.05rem, 3.6vw, 2rem); }
  .hero-stat-label {
    font-size: clamp(0.62rem, 2vw, 0.82rem);
    line-height: 1.25;
    white-space: normal;
  }

  .pain-grid, .data-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .features-grid { grid-template-columns: 1fr; }
  .platforms-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .automation-categories { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .automation-stats { grid-template-columns: repeat(2, 1fr); }
  .linkage-container, .control-container { grid-template-columns: 1fr; gap: 40px; }
  .cluster-grid, .value-grid { grid-template-columns: 1fr; }
  .match-mode-dimensions { grid-template-columns: 1fr; }
  .match-mode-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .demo-dashboard-host:not(.demo-panel-dashboard-host) .nd-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: auto;
    grid-auto-rows: minmax(160px, auto);
  }
  .section { padding: 80px var(--page-gutter); }
  .hero { padding: 120px var(--page-gutter) 80px; }
  .cta-section { padding: 80px var(--page-gutter); }
  .footer { padding: var(--footer-padding-y) var(--nav-gutter-left); }
  .hero-title { font-size: clamp(2rem, 5vw, 2.8rem); }
  .section-title { font-size: clamp(1.8rem, 4vw, 2.2rem); }
  .linkage-info h3 { font-size: 1.5rem; }
}

@media (max-width: 960px) {
  :root {
    --footer-gap: 10px;
  }

  .footer {
    padding: var(--footer-padding-y) 0;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: var(--footer-gap);
    padding-left: var(--nav-gutter-left);
    padding-right: var(--nav-gutter-left);
  }

  .footer .nav-logo {
    overflow: visible;
    text-overflow: unset;
    white-space: normal;
    flex: none;
  }

  .footer .nav-logo span {
    display: inline;
  }

  .footer-logo,
  .footer-logo:first-of-type,
  .footer-logo-right {
    justify-self: center;
    text-align: center;
    white-space: normal;
    overflow: visible;
    text-overflow: unset;
    max-width: 100%;
  }

  .footer-copy {
    white-space: normal;
  }
}

@media (max-width: 768px) {
  .section { padding: 64px var(--page-gutter); }
  .section-header { margin-bottom: 48px; }
  .hero {
    min-height: auto;
    padding: 96px var(--page-gutter) 64px;
  }
  .hero-title {
    font-size: clamp(1.65rem, 7vw, 2rem);
    word-break: break-word;
  }
  .hero-title br,
  .hero-subtitle br { display: none; }
  .hero-subtitle {
    font-size: 0.98rem;
    margin-bottom: 36px;
    padding: 0 4px;
  }
  .hero-badge { font-size: 0.78rem; margin-bottom: 24px; }
  .hero-stats {
    gap: 12px 6px;
    margin-top: 48px;
  }

  .section-title { font-size: clamp(1.45rem, 6vw, 1.8rem); }
  .section-desc { font-size: 0.95rem; }
  .section-tag { font-size: 0.72rem; letter-spacing: 1px; }

  .pain-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px 6px;
  }
  .pain-card {
    padding: 14px 8px;
    min-width: 0;
  }
  .pain-icon {
    width: clamp(28px, 8vw, 40px);
    height: clamp(28px, 8vw, 40px);
    border-radius: 8px;
    margin-bottom: 8px;
  }
  .pain-icon svg { width: clamp(14px, 4vw, 20px); height: clamp(14px, 4vw, 20px); }
  .pain-value { font-size: clamp(0.85rem, 3.6vw, 1.2rem); margin-bottom: 4px; }
  .pain-name {
    font-size: clamp(0.62rem, 2.2vw, 0.78rem);
    margin-bottom: 0;
    line-height: 1.25;
  }
  .pain-desc { display: none; }

  .platforms-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 36px; }
  .platform-card { padding: 18px 14px; min-width: 0; }
  .platform-card-logo { width: 56px; height: 56px; border-radius: 12px; padding: 6px; margin-bottom: 12px; }
  .platform-card-title { font-size: 0.95rem; margin-bottom: 8px; }
  .platform-card-desc { font-size: 0.78rem; margin-bottom: 10px; }
  .platform-card-tag { font-size: 0.7rem; padding: 3px 8px; }
  .automation-categories { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .auto-category-header { padding: 20px 20px 14px; }
  .auto-category-body { padding: 0 20px 20px; }
  .auto-category-icon { width: 46px; height: 46px; border-radius: 12px; }
  .auto-category-icon svg { width: 22px; height: 22px; }
  .auto-category-title { font-size: 1.05rem; }
  .auto-category-desc { font-size: 0.85rem; margin-bottom: 14px; }
  .automation-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 40px; padding-top: 32px; }
  .auto-stat-num { font-size: 1.6rem; }

  .data-grid,
  .cluster-grid,
  .value-grid,
  .match-mode-grid { grid-template-columns: minmax(0, 1fr); }
  .value-number { font-size: 2.4rem; }

  .linkage-container { gap: 32px; }
  .linkage-visual { padding: 20px 16px; }
  .linkage-info h3 { font-size: 1.35rem; margin-bottom: 20px; }
  .linkage-step { padding: 14px 16px; }
  .room-device {
    font-size: 0.6rem;
    padding: 5px 8px 5px 6px;
    max-width: calc(50% - 6px);
  }
  .room-device-icon { width: 26px; height: 26px; }
  .room-device-icon svg { width: 20px; height: 20px; }
  .room-device-label {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .room-dev-pc {
    font-size: 0.72rem;
    padding: 8px 12px;
    max-width: none;
  }
  .room-dev-pc .room-device-icon { width: 30px; height: 30px; }
  .room-dev-pc .room-device-icon svg { width: 24px; height: 24px; }
  .room-dev-light { max-width: none; }
  .trigger-btn { padding: 8px 18px; font-size: 0.78rem; gap: 6px; }
  .trigger-icon { width: 16px; height: 16px; }
  .trigger-icon svg { width: 14px; height: 14px; }

  .control-container { gap: 32px; }
  .control-mockup { order: -1; }
  .control-screen {
    width: min(100%, 320px);
    max-width: 100%;
    margin: 0 auto;
  }
  .control-item {
    flex-wrap: wrap;
    gap: 10px;
    align-items: flex-start;
  }
  .control-item-left { flex: 1 1 120px; min-width: 0; }
  .fan-speed {
    flex: 1 1 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
  }
  .temp-value { font-size: 2.8rem; }

  .arch-layer {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 24px 20px;
  }
  .arch-layer:hover { transform: none; }
  .arch-info { min-width: 0; }

  .deploy-timeline::before { left: 15px; }
  .deploy-step { gap: 16px; padding: 20px 0; }
  .deploy-dot { margin-left: 5px; }
  .deploy-content { padding: 20px; }
  .deploy-step:hover .deploy-content { transform: none; }

  .cta-section { padding: 64px var(--page-gutter); }
  .cta-title { font-size: clamp(1.45rem, 6vw, 2rem); }
  .cta-desc { font-size: 0.98rem; }
  .cta-buttons,
  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
  }
  .btn-primary,
  .btn-secondary,
  .nav-cta {
    width: 100%;
    justify-content: center;
    padding: 14px 24px;
    font-size: 0.95rem;
  }

  .demo-shell {
    flex-direction: column;
    min-height: auto;
    width: 100%;
    max-width: 100%;
    border-radius: var(--radius);
  }
  .demo-sidebar {
    flex: 0 0 auto;
    flex-direction: row;
    flex-wrap: wrap;
    border-right: none;
    border-bottom: 1px solid var(--glass-border);
    padding: 10px;
    gap: 8px;
  }
  .demo-sidebar-label { display: none; }
  .demo-nav-item {
    flex: 1 1 calc(50% - 4px);
    justify-content: center;
    padding: 10px 8px;
    font-size: 0.76rem;
    min-width: 0;
  }
  .demo-nav-item span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .demo-fullscreen-btn { top: 8px; right: 8px; padding: 8px 10px; }
  .demo-fullscreen-label { display: none; }
  .demo-viewport:has(#demo-panel-dashboard.active) {
    overflow: hidden !important;
    -webkit-overflow-scrolling: auto;
    min-height: clamp(240px, 52vw, 400px);
  }
  .demo-viewport {
    min-height: clamp(360px, 58vh, 520px);
    overflow: auto;
    -webkit-overflow-scrolling: touch;
  }
  .demo-iframe { min-height: clamp(340px, 56vh, 500px); }
  .demo-panel#demo-panel-dashboard.active {
    flex: 1 1 auto;
    min-height: clamp(220px, 50vw, 380px);
    overflow: hidden;
  }
  .demo-panel-dashboard-host {
    padding: 0;
    overflow: hidden;
    align-items: center;
    justify-content: center;
    min-height: clamp(200px, 48vw, 360px);
  }
  .demo-panel-dashboard-host #page-dashboard:not(.demo-dashboard-scaled) {
    opacity: 0;
    pointer-events: none;
  }
  .demo-panel-dashboard-host #page-dashboard.demo-dashboard-scaled {
    opacity: 1;
    pointer-events: auto;
  }
  /* 内嵌大屏布局由上方 .demo-panel-dashboard-host !important 规则固定，此处不再覆盖 */
}

@media (max-width: 480px) {
  html { font-size: 15px; }
  .navbar { height: 60px; }
  .nav-links.show { top: 60px; max-height: calc(100vh - 60px); }
  .hero { padding-top: 88px; }
  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 12px;
  }
  .hero-stat-num { font-size: clamp(1.1rem, 4.5vw, 1.5rem); }
  .hero-stat-label { font-size: clamp(0.68rem, 2.4vw, 0.78rem); }
  .hero-orb-1 { width: 280px; height: 280px; }
  .hero-orb-2 { width: 220px; height: 220px; }
  .hero-orb-3 { width: 180px; height: 180px; }
  .section { padding: 52px var(--page-gutter); }
  .section-header { margin-bottom: 36px; }
  .pain-grid { gap: 6px 4px; }
  .pain-card { padding: 10px 6px; }
  .pain-icon { margin-bottom: 6px; }
  .feature-card,
  .cluster-card,
  .value-card,
  .data-card { padding: 22px 18px; }
  .feature-title { font-size: 1.15rem; }
  .linkage-visual { padding: 16px 12px; }
  .room-device { font-size: 0.55rem; padding: 4px 6px; }
  .room-device-icon { width: 22px; height: 22px; }
  .room-device-icon svg { width: 18px; height: 18px; }
  .room-dev-ac,
  .room-dev-air { top: 8%; }
  .room-dev-supply,
  .room-dev-door { bottom: 10%; }
  .deploy-content { padding: 16px; }
  .demo-nav-item {
    flex: 1 1 100%;
    font-size: 0.82rem;
  }
  .demo-viewport { min-height: 320px; }
  .demo-iframe { min-height: 300px; }
  .data-value { font-size: 1.1rem; }
  .data-ring { width: 84px; height: 84px; }
}

body.nav-open { overflow: hidden; }
a.nav-cta, a.btn-primary { text-decoration: none; }
/* Site guard: limit copy, allow contact */
body { user-select: none; -webkit-user-select: none; }
.selectable, .footer-copy a { user-select: text; -webkit-user-select: text; }