:root {
  --bg: #0a0a0a;
  --bg-elevated: #141414;
  --bg-card: #1a1a1a;
  --fg: #e8e8e8;
  --fg-dim: #888888;
  --fg-muted: #555555;
  --accent: #00e5ff;
  --accent-glow: rgba(0, 229, 255, 0.15);
  --warm: #ffb300;
  --warm-glow: rgba(255, 179, 0, 0.12);
  --border: #2a2a2a;
  --font-en: 'Space Grotesk', sans-serif;
  --font-cn: 'Noto Sans SC', sans-serif;
}

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

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-cn);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ========== HERO ========== */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 80vw;
  height: 80vw;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(ellipse, var(--warm-glow) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(0, 229, 255, 0.3);
  padding: 0.4rem 1rem;
  border-radius: 2px;
  margin-bottom: 2.5rem;
}

.hero-title {
  margin-bottom: 2rem;
}

.hero-cn {
  display: block;
  font-family: var(--font-cn);
  font-size: clamp(4rem, 12vw, 9rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--fg) 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-en {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(1.2rem, 3vw, 2rem);
  font-weight: 400;
  color: var(--fg-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 0.5rem;
}

.hero-tagline {
  font-family: var(--font-en);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 400;
  color: var(--fg);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: 1rem;
  color: var(--fg-dim);
  line-height: 1.8;
  max-width: 600px;
}

.hero-gradient-bar {
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--warm), transparent);
  margin-top: 4rem;
}

/* ========== STATS ========== */
.stats {
  padding: 5rem 2rem;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.stat-block {
  flex: 1;
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.stat-label {
  display: block;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--fg);
  margin-bottom: 0.3rem;
}

.stat-sublabel {
  display: block;
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.stat-divider {
  width: 1px;
  height: 60px;
  background: var(--border);
  flex-shrink: 0;
}

/* ========== PIPELINE ========== */
.pipeline {
  padding: 6rem 2rem;
}

.pipeline-inner {
  max-width: 900px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 4rem;
}

.section-header h2 {
  font-family: var(--font-cn);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--fg-dim);
  max-width: 600px;
}

.pipeline-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.pipeline-step {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  padding: 2rem;
  border-left: 2px solid var(--border);
  position: relative;
  transition: border-color 0.3s;
}

.pipeline-step:hover {
  border-left-color: var(--accent);
}

.pipeline-step::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 2.4rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--fg-muted);
  transition: border-color 0.3s, background 0.3s;
}

.pipeline-step:hover::before {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.step-num {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
  min-width: 2rem;
  padding-top: 0.2rem;
}

.step-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.step-content p {
  font-size: 0.95rem;
  color: var(--fg-dim);
  line-height: 1.7;
}

.pipeline-connector {
  display: none;
}

/* ========== PLATFORMS ========== */
.platforms {
  padding: 6rem 2rem;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.platforms-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.platform-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 2rem;
  border-radius: 4px;
  transition: border-color 0.3s, transform 0.2s;
}

.platform-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.platform-name {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.platform-detail {
  font-family: var(--font-en);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--warm);
  margin-bottom: 0.4rem;
}

.platform-note {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

/* ========== MANIFESTO ========== */
.manifesto {
  padding: 6rem 2rem;
}

.manifesto-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.manifesto-frame {
  border: 1px solid var(--border);
  padding: 3rem;
  position: relative;
}

.manifesto-label {
  position: absolute;
  top: -0.7rem;
  left: 2rem;
  background: var(--bg);
  padding: 0 0.8rem;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.manifesto-quote {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--fg);
  border: none;
  padding: 0;
  margin: 0;
}

.manifesto-quote strong {
  color: var(--accent);
  font-weight: 600;
}

.manifesto-attr {
  display: block;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--fg-muted);
  font-style: normal;
}

.manifesto-points {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.manifesto-point .mp-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--warm);
  margin-bottom: 0.5rem;
}

.manifesto-point p {
  font-size: 0.95rem;
  color: var(--fg-dim);
  line-height: 1.7;
}

/* ========== CLOSING ========== */
.closing {
  padding: 8rem 2rem;
  text-align: center;
  position: relative;
}

.closing::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 60vw;
  height: 60vw;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
  opacity: 0.5;
}

.closing-inner {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.closing-line {
  width: 60px;
  height: 2px;
  background: var(--accent);
  margin: 0 auto 3rem;
}

.closing-headline {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 1.5rem;
}

.closing-text {
  font-size: 1.05rem;
  color: var(--fg-dim);
  line-height: 1.8;
  margin-bottom: 3rem;
}

.closing-cn {
  font-family: var(--font-cn);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.3em;
}

/* ========== FOOTER ========== */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
}

.footer-brand {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 0.3rem;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-bottom: 1rem;
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--fg-muted);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .hero {
    min-height: 80vh;
    padding: 4rem 1.5rem 3rem;
  }

  .stats-inner {
    flex-direction: column;
    gap: 2rem;
  }

  .stat-divider {
    width: 60px;
    height: 1px;
  }

  .platform-grid {
    grid-template-columns: 1fr;
  }

  .manifesto-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .pipeline-step {
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.5rem;
  }
}