/* ================================
   ZhugeDengpao — Minimal Dark Theme
   Inspired by VoxYZ
   ================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&family=JetBrains+Mono:wght@400;500&display=swap');

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

/* ---- Tokens ---- */
:root {
  --bg:        #0a0a0b;
  --surface:   #111113;
  --border:    #1e1e1f;
  --text:      #e8e8e8;
  --muted:     #888888;
  --accent:    #f5c518;
  --accent-dim:#f5c51820;
  --amber-glow:rgba(245,197,24,0.15);

  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans:  'DM Sans', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', monospace;

  --nav-h: 64px;
  --content-w: 720px;
  --section-py: 100px;
  --radius: 12px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  min-height: 100vh;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ---- Selection ---- */
::selection { background: var(--accent); color: #000; }

/* ---- Focus ---- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---- Links ---- */
a {
  color: inherit;
  text-decoration: none;
}

/* ================================
   NAVIGATION
   ================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  transition: background 0.3s, backdrop-filter 0.3s;
}

.nav.scrolled {
  background: rgba(10,10,11,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo .bulb {
  color: var(--accent);
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--muted);
  transition: color 0.2s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.25s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links .sep {
  color: var(--border);
  user-select: none;
}

/* ================================
   LAYOUT
   ================================ */
.container {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 0 24px;
}

.container--wide {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-py) 0;
}

.section--sm {
  padding: 60px 0;
}

/* ================================
   TYPOGRAPHY
   ================================ */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  display: block;
}

h1, .h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 400;
}

h2, .h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 400;
}

h3, .h3 {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

p {
  color: var(--muted);
  max-width: 60ch;
}

p + p { margin-top: 1em; }

.muted { color: var(--muted); }
.accent { color: var(--accent); }
.mono { font-family: var(--font-mono); }

/* ================================
   HERO
   ================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--nav-h);
  position: relative;
}

.hero__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 5.5rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 32px;
}

.hero__title em {
  font-style: italic;
  color: var(--accent);
}

.hero__sub {
  font-size: 1.125rem;
  color: var(--muted);
  line-height: 1.6;
  max-width: 48ch;
  margin-bottom: 48px;
}

.hero__sub strong {
  color: var(--text);
  font-weight: 500;
}

.hero__divider {
  width: 48px;
  height: 2px;
  background: var(--accent);
  margin: 48px 0;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  padding: 10px 20px;
  border-radius: 6px;
  transition: background 0.2s, border-color 0.2s;
}

.hero__cta:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
}

/* ================================
   AGENT GRID
   ================================ */
.agent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 48px;
}

.agent-card {
  background: var(--surface);
  padding: 28px 24px;
  transition: background 0.2s;
  position: relative;
}

.agent-card:hover {
  background: #161618;
}

.agent-card:hover .agent-card__bar {
  opacity: 1;
}

.agent-card__emoji {
  font-size: 1.5rem;
  margin-bottom: 12px;
  display: block;
}

.agent-card__name {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.agent-card__title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.agent-card__desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}

.agent-card__bar {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.2s;
}

/* ================================
   STEPS / HOW IT WORKS
   ================================ */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 48px;
}

.step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 24px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

.step:last-child { border-bottom: none; }

.step__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  padding-top: 4px;
}

.step__content h3 {
  margin-bottom: 8px;
}

.step__content p {
  font-size: 0.9rem;
  max-width: 52ch;
}

/* ================================
   CARD (surface)
   ================================ */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}

.card--border-left {
  border-left: 3px solid var(--accent);
}

.card + .card { margin-top: 16px; }

/* ================================
   DIVIDER
   ================================ */
.divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: 0;
}

.divider--accent {
  height: 2px;
  width: 48px;
  background: var(--accent);
  border-radius: 1px;
}

/* ================================
   CTA BLOCK
   ================================ */
.cta-block {
  text-align: center;
  padding: 80px 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 80px;
}

.cta-block h2 {
  margin-bottom: 16px;
}

.cta-block p {
  margin: 0 auto 32px;
  text-align: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #000;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 24px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s;
}

.btn:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
}

.btn--outline:hover {
  background: var(--accent-dim);
  opacity: 1;
  transform: none;
}

/* ================================
   STATS
   ================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 48px;
}

.stat {
  background: var(--surface);
  padding: 40px 32px;
  text-align: center;
}

.stat__num {
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}

.stat__label {
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* ================================
   INSIGHT LIST
   ================================ */
.insight-list {
  list-style: none;
  margin-top: 40px;
}

.insight-item {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.insight-item.visible { opacity: 1; transform: none; }
.insight-item:last-child { border-bottom: none; }

.insight-item__meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.insight-item__title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  transition: color 0.2s;
}

.insight-item:hover .insight-item__title {
  color: var(--accent);
}

.insight-item__excerpt {
  font-size: 0.875rem;
  color: var(--muted);
  max-width: 56ch;
}

/* ================================
   RADAR CHART (CSS-only simulation)
   ================================ */
.radar-demo {
  margin-top: 48px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}

.radar-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.radar-row:last-child { margin-bottom: 0; }

.radar-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  width: 100px;
  flex-shrink: 0;
}

.radar-bar-wrap {
  flex: 1;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.radar-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  transition: width 1s ease;
}

.radar-val {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  width: 40px;
  text-align: right;
  flex-shrink: 0;
}

/* ================================
   OFFICE / LIVE FEED
   ================================ */
.log-stream {
  list-style: none;
  margin-top: 40px;
}

.log-entry {
  display: grid;
  grid-template-columns: 100px 80px 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
  font-size: 0.875rem;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.log-entry.visible { opacity: 1; transform: none; }
.log-entry:last-child { border-bottom: none; }

.log-entry__time {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  padding-top: 2px;
}

.log-entry__agent {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--accent-dim);
  padding: 2px 8px;
  border-radius: 3px;
  display: inline-block;
  width: fit-content;
}

.log-entry__text {
  color: var(--text);
  line-height: 1.5;
}

.log-entry__text .highlight {
  color: var(--accent);
}

/* ================================
   FOOTER
   ================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0;
  margin-top: 80px;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__brand {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer__brand .bulb { color: var(--accent); }

.footer__links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer__links a {
  font-size: 0.8rem;
  color: var(--muted);
  transition: color 0.2s;
}

.footer__links a:hover { color: var(--text); }

.footer__copy {
  font-size: 0.75rem;
  color: var(--muted);
  width: 100%;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* ================================
   SCROLL REVEAL
   ================================ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* Stagger delays */
.reveal:nth-child(2) { transition-delay: 0.08s; }
.reveal:nth-child(3) { transition-delay: 0.16s; }
.reveal:nth-child(4) { transition-delay: 0.24s; }
.reveal:nth-child(5) { transition-delay: 0.32s; }
.reveal:nth-child(6) { transition-delay: 0.40s; }
.reveal:nth-child(7) { transition-delay: 0.48s; }
.reveal:nth-child(8) { transition-delay: 0.56s; }
.reveal:nth-child(9) { transition-delay: 0.64s; }
.reveal:nth-child(10) { transition-delay: 0.72s; }

/* ================================
   AGENT NETWORK ANIMATION
   ================================ */
.agent-network-section {
  width: 100%;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.agent-network-wrap {
  position: relative;
  width: 100%;
  height: 320px;
  overflow: hidden;
}

#agent-network-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.agent-network-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: 24px;
}

.agent-network-label {
  display: flex;
  align-items: center;
  gap: 8px;
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: livePulse 2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes livePulse {
  0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 rgba(245,197,24,0.4); }
  50% { opacity: 0.7; transform: scale(1.1); box-shadow: 0 0 0 6px rgba(245,197,24,0); }
}

.agent-nodes {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 10px;
  max-width: 600px;
}

.agent-node-pill {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(245,197,24,0.08);
  border: 1px solid rgba(245,197,24,0.2);
  padding: 3px 10px;
  border-radius: 20px;
  transition: background 0.3s, border-color 0.3s;
  animation: nodeBreath 3s ease-in-out infinite;
}

.agent-node-pill:nth-child(1) { animation-delay: 0s; }
.agent-node-pill:nth-child(2) { animation-delay: 0.3s; }
.agent-node-pill:nth-child(3) { animation-delay: 0.6s; }
.agent-node-pill:nth-child(4) { animation-delay: 0.9s; }
.agent-node-pill:nth-child(5) { animation-delay: 1.2s; }
.agent-node-pill:nth-child(6) { animation-delay: 1.5s; }
.agent-node-pill:nth-child(7) { animation-delay: 1.8s; }
.agent-node-pill:nth-child(8) { animation-delay: 2.1s; }
.agent-node-pill:nth-child(9) { animation-delay: 2.4s; }
.agent-node-pill:nth-child(10) { animation-delay: 2.7s; }

@keyframes nodeBreath {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; background: rgba(245,197,24,0.15); border-color: rgba(245,197,24,0.4); }
}

/* ================================
   PAGE HEADER (inner pages)
   ================================ */
.page-header {
  padding: 140px 0 80px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}

.page-header h1 {
  margin-bottom: 16px;
}

.page-header p {
  font-size: 1.05rem;
  max-width: 52ch;
}

/* ================================
   RESPONSIVE
   ================================ */
@media (max-width: 640px) {
  :root {
    --section-py: 60px;
    --nav-h: 56px;
  }

  .nav { padding: 0 20px; }
  .nav-links { gap: 20px; }
  .nav-links .sep { display: none; }

  .agent-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr; }

  .log-entry { grid-template-columns: 80px 1fr; }
  .log-entry__agent { display: none; }

  .step { grid-template-columns: 1fr; gap: 12px; }
  .step__num { display: none; }

  .card { padding: 28px 20px; }
  .cta-block { padding: 48px 24px; }

  .footer__inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 400px) {
  .agent-grid { grid-template-columns: 1fr; }
}

/* ================================
   AMBIENT GLOW (homepage accent)
   ================================ */
.glow-orb {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,197,24,0.04) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  top: -200px;
  right: -200px;
}