/* ==========================================================
   全球机器人平台竞争格局 —— 工业蓝图风格
   ========================================================== */

:root {
  /* Base */
  --bg-0: #0a0e16;
  --bg-1: #0f1522;
  --bg-2: #141c2e;
  --bg-3: #1a2438;
  --surface: rgba(26, 36, 56, 0.6);
  --surface-2: rgba(20, 28, 46, 0.85);

  /* Blueprint grid color */
  --grid: rgba(64, 120, 200, 0.07);
  --grid-strong: rgba(64, 120, 200, 0.12);

  /* Text */
  --text-0: #e8eef7;
  --text-1: #c8d2e0;
  --text-2: #8a99b0;
  --text-3: #5a6a85;

  /* Brand accent — cyan tech */
  --accent: #38bdf8;
  --accent-2: #0ea5e9;
  --accent-soft: rgba(56, 189, 248, 0.12);
  --accent-line: rgba(56, 189, 248, 0.35);

  /* Data highlight — warm gold */
  --gold: #fbbf24;
  --gold-2: #f59e0b;
  --gold-soft: rgba(251, 191, 36, 0.12);

  /* Green — positive/growth */
  --green: #34d399;
  --green-2: #10b981;
  --green-soft: rgba(52, 211, 153, 0.12);

  /* Red/orange — warning */
  --orange: #fb923c;
  --orange-soft: rgba(251, 146, 60, 0.12);

  /* Lines */
  --line: rgba(140, 170, 210, 0.12);
  --line-2: rgba(140, 170, 210, 0.22);

  /* Fonts */
  --font-display: 'Georama', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  /* Radius */
  --r-sm: 2px;
  --r-md: 4px;
  --r-lg: 8px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.35);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.45);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-0);
  color: var(--text-1);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Blueprint grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-strong) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-strong) 1px, transparent 1px);
  background-size: 240px 240px;
  pointer-events: none;
  z-index: 0;
}

/* ========== Layout ========== */
.nav-wrap, .section-wrap {
  position: relative;
  z-index: 1;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ========== Navigation ========== */
.nav-wrap {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(10, 14, 22, 0.75);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--text-0);
}

.nav-logo-mark {
  width: 28px; height: 28px;
  border: 1.5px solid var(--accent);
  display: grid;
  place-items: center;
  position: relative;
}

.nav-logo-mark::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-2);
  text-decoration: none;
  border-radius: var(--r-sm);
  transition: color 0.2s, background 0.2s;
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.nav-links a:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.nav-cta {
  padding: 8px 18px;
  background: transparent;
  border: 1px solid var(--accent-line);
  color: var(--accent);
  font-size: 13px;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  border-radius: var(--r-sm);
  transition: all 0.2s;
}

.nav-cta:hover {
  background: var(--accent-soft);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-2);
  color: var(--text-1);
  width: 36px; height: 36px;
  cursor: pointer;
  border-radius: var(--r-sm);
}

/* ========== Section Common ========== */
section {
  padding: 100px 0;
  position: relative;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--accent);
}

.section-title {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-0);
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 17px;
  color: var(--text-2);
  max-width: 680px;
  margin-bottom: 48px;
  line-height: 1.7;
}

/* Blueprint corner mark */
.bp-corner {
  position: absolute;
  width: 32px; height: 32px;
  border-color: var(--accent-line);
  border-style: solid;
  border-width: 0;
  opacity: 0.6;
}
.bp-corner.tl { top: 24px; left: 24px; border-top-width: 1px; border-left-width: 1px; }
.bp-corner.tr { top: 24px; right: 24px; border-top-width: 1px; border-right-width: 1px; }
.bp-corner.bl { bottom: 24px; left: 24px; border-bottom-width: 1px; border-left-width: 1px; }
.bp-corner.br { bottom: 24px; right: 24px; border-bottom-width: 1px; border-right-width: 1px; }

/* ========== Hero ========== */
.hero {
  padding: 160px 0 100px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%; right: -10%;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%; left: -15%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 24px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
}

.hero-kicker::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(42px, 5.5vw, 72px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text-0);
  margin-bottom: 24px;
}

.hero-title span.accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 560px;
}

.hero-subtitle strong {
  color: var(--text-0);
  font-weight: 600;
}

.hero-meta {
  display: flex;
  gap: 32px;
  margin-bottom: 40px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-meta span strong {
  color: var(--text-1);
  display: block;
  font-size: 14px;
  font-family: var(--font-body);
  text-transform: none;
  letter-spacing: normal;
  font-weight: 500;
  margin-top: 4px;
}

/* Hero right side — blueprint visual */
.hero-visual {
  position: relative;
  aspect-ratio: 1;
  max-width: 480px;
  justify-self: end;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  border: 1px solid var(--line-2);
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    var(--surface);
  background-size: 24px 24px;
}

.hero-canvas::before {
  content: '';
  position: absolute;
  inset: 16px;
  border: 1px dashed var(--accent-line);
}

.robot-silhouette {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.robot-silhouette svg {
  width: 60%;
  height: 60%;
  stroke: var(--accent);
  stroke-width: 1.5;
  fill: none;
  filter: drop-shadow(0 0 20px rgba(56, 189, 248, 0.3));
}

.hero-badge {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--line-2);
  background: var(--surface-2);
  white-space: nowrap;
}

.hero-badge::before {
  content: '';
  width: 4px; height: 4px;
  background: var(--accent);
  border-radius: 50%;
}

.hero-badge.tl { top: -1px; left: -1px; }
.hero-badge.br { bottom: -1px; right: -1px; }

/* Hero stats cards */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 64px;
  grid-column: 1 / -1;
}

.stat-card {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
  backdrop-filter: blur(8px);
  transition: border-color 0.3s, transform 0.3s;
}

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

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--accent);
}

.stat-card.gold::before { background: var(--gold); }
.stat-card.green::before { background: var(--green); }

.stat-number {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  color: var(--text-0);
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-number .unit {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-2);
  margin-left: 2px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.5;
  margin-bottom: 10px;
}

.stat-foot {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--green);
  letter-spacing: 0.05em;
}

.stat-foot.gold { color: var(--gold); }
.stat-foot.accent { color: var(--accent); }

/* ========== Market Background ========== */
.market-structures {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.structure-card {
  padding: 32px 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
  backdrop-filter: blur(8px);
}

.structure-card .num {
  font-family: var(--font-display);
  font-size: 72px;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--accent-line);
  position: absolute;
  top: 16px; right: 20px;
  opacity: 0.5;
}

.structure-icon {
  width: 48px; height: 48px;
  border: 1px solid var(--accent-line);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  background: var(--accent-soft);
  color: var(--accent);
}

.structure-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 14px;
  line-height: 1.3;
}

.structure-desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
}

.structure-desc strong {
  color: var(--text-0);
  font-weight: 600;
}

.structure-highlight {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.03em;
}

/* Chart grid */
.chart-grid-2 {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 32px;
  margin-top: 48px;
}

.chart-card {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 28px;
  position: relative;
}

.chart-card-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-0);
  margin-bottom: 4px;
}

.chart-card-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.chart-box {
  width: 100%;
  min-height: 280px;
}

/* ========== Competition Section ========== */
.competition {
  background: linear-gradient(180deg, transparent 0%, var(--bg-1) 100%);
}

.competition-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.competition-table th,
.competition-table td {
  text-align: left;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.competition-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  background: var(--bg-2);
  border-bottom: 1px solid var(--line-2);
}

.competition-table tbody tr:hover {
  background: var(--accent-soft);
}

.competition-table td.type {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-0);
  font-size: 15px;
  min-width: 140px;
}

.competition-table td.reps {
  color: var(--text-1);
  font-size: 13px;
  min-width: 180px;
}

.competition-table td.capability {
  color: var(--text-2);
  font-size: 13px;
}

.competition-table td.pros {
  color: var(--green);
  font-size: 13px;
}

.competition-table td.cons {
  color: var(--orange);
  font-size: 13px;
}

.competition-table td.pros::before {
  content: '+ ';
  font-weight: 700;
}
.competition-table td.cons::before {
  content: '− ';
  font-weight: 700;
}

/* Player highlight cards */
.player-spotlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.spotlight {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
}

.spotlight-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.spotlight-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 10px;
}

.spotlight-desc {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.65;
}

.spotlight-metric {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  font-weight: 500;
}

/* ========== Pain Points ========== */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pain-card {
  padding: 28px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
  transition: border-color 0.3s;
}

.pain-card:hover {
  border-color: var(--orange);
}

.pain-icon {
  width: 44px; height: 44px;
  border: 1px solid var(--orange);
  background: var(--orange-soft);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  color: var(--orange);
}

.pain-num {
  position: absolute;
  top: 18px; right: 20px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-3);
}

.pain-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 10px;
}

.pain-desc {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
}

.pain-stat {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  font-weight: 500;
}

/* ========== 5-Layer Architecture ========== */
.architecture {
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
}

.arch-intro {
  text-align: center;
  margin-bottom: 64px;
}

.arch-tagline {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--text-0);
  margin-top: 8px;
  letter-spacing: -0.01em;
}

.arch-tagline .sep {
  color: var(--accent);
  margin: 0 12px;
}

.arch-stack {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.arch-layer {
  display: grid;
  grid-template-columns: 80px 1fr 240px;
  gap: 24px;
  padding: 28px 32px;
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
  align-items: start;
  cursor: default;
  transition: all 0.3s;
}

.arch-layer:hover {
  border-color: var(--accent-line);
  background: var(--surface-2);
}

.arch-layer-num {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--accent);
}

.arch-layer-main h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.arch-layer-main h3 .en {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
}

.arch-layer-main .metaphor {
  font-size: 13px;
  color: var(--gold);
  margin-bottom: 14px;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

.arch-layer-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.arch-layer-features li {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.6;
  padding-left: 18px;
  position: relative;
}

.arch-layer-features li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 1px;
  background: var(--accent);
}

.arch-layer-side {
  border-left: 1px solid var(--line);
  padding-left: 24px;
}

.arch-layer-side .revenue {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.arch-layer-side .revenue-items {
  font-size: 12px;
  color: var(--green);
  line-height: 1.7;
}

/* Layer colors */
.arch-layer:nth-child(1) { border-left: 3px solid #38bdf8; }
.arch-layer:nth-child(2) { border-left: 3px solid #22d3ee; }
.arch-layer:nth-child(3) { border-left: 3px solid #a78bfa; }
.arch-layer:nth-child(4) { border-left: 3px solid #fbbf24; }
.arch-layer:nth-child(5) { border-left: 3px solid #fb923c; }

/* ========== Roadmap ========== */
.roadmap {
  position: relative;
}

.timeline {
  position: relative;
  margin-top: 24px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0; right: 0;
  top: 58px;
  height: 1px;
  background: var(--line-2);
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.timeline-phase {
  position: relative;
  padding-top: 80px;
}

.timeline-dot {
  position: absolute;
  top: 48px;
  left: 0;
  width: 20px; height: 20px;
  border: 2px solid var(--accent);
  background: var(--bg-0);
  transform: translateY(-50%);
}

.timeline-dot::after {
  content: '';
  position: absolute;
  inset: 4px;
  background: var(--accent);
}

.timeline-phase:nth-child(2) .timeline-dot {
  border-color: var(--gold);
}
.timeline-phase:nth-child(2) .timeline-dot::after {
  background: var(--gold);
}
.timeline-phase:nth-child(3) .timeline-dot {
  border-color: var(--green);
}
.timeline-phase:nth-child(3) .timeline-dot::after {
  background: var(--green);
}

.timeline-time {
  position: absolute;
  top: 12px; left: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.timeline-phase h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 6px;
}

.timeline-phase .phase-goal {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 18px;
}

.timeline-phase:nth-child(2) .phase-goal { color: var(--gold); }
.timeline-phase:nth-child(3) .phase-goal { color: var(--green); }

.timeline-tasks {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.timeline-tasks li {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.6;
  padding-left: 20px;
  position: relative;
}

.timeline-tasks li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
}

.timeline-revenue {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.timeline-revenue strong {
  display: block;
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--green);
  margin-top: 4px;
  text-transform: none;
  letter-spacing: normal;
}

/* ========== Differentiation ========== */
.diff-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.diff-table th,
.diff-table td {
  text-align: left;
  padding: 20px 28px;
  border-bottom: 1px solid var(--line);
}

.diff-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  background: var(--bg-2);
}

.diff-table thead th:last-child {
  color: var(--accent);
  background: var(--accent-soft);
}

.diff-table td.dim {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-0);
  width: 180px;
  font-size: 15px;
}

.diff-table td.status-quo {
  color: var(--text-2);
  width: 35%;
  font-size: 14px;
}

.diff-table td.our-way {
  color: var(--text-0);
  font-weight: 500;
  font-size: 14px;
}

.diff-table td.our-way::before {
  content: '✓ ';
  color: var(--green);
  font-weight: 700;
}

/* ========== Core Advantages ========== */
.advantages {
  background: linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 100%);
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.adv-card {
  padding: 28px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  text-align: center;
  position: relative;
  transition: all 0.3s;
}

.adv-card:hover {
  border-color: var(--accent-line);
  transform: translateY(-4px);
}

.adv-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 14px;
}

.adv-icon {
  width: 48px; height: 48px;
  margin: 0 auto 16px;
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
  display: grid;
  place-items: center;
  color: var(--accent);
}

.adv-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 8px;
  line-height: 1.4;
}

.adv-desc {
  font-size: 12.5px;
  color: var(--text-2);
  line-height: 1.6;
}

/* ========== Action Items ========== */
.action-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.action-card {
  padding: 32px 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
  border-top: 3px solid var(--accent);
}

.action-card:nth-child(2) { border-top-color: var(--gold); }
.action-card:nth-child(3) { border-top-color: var(--green); }

.action-timeline {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.action-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 14px;
  line-height: 1.35;
}

.action-detail {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}

.action-step-num {
  position: absolute;
  top: 24px; right: 28px;
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-2);
  line-height: 1;
}

/* ========== Footer ========== */
.site-footer {
  padding: 80px 0 48px;
  border-top: 1px solid var(--line);
  background: var(--bg-0);
  position: relative;
}

.footer-quote {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.footer-quote-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.footer-quote-main {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  color: var(--text-0);
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.footer-quote-main em {
  font-style: normal;
  color: var(--gold);
}

.footer-quote-sub {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.8;
  max-width: 680px;
  margin: 0 auto 48px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.05em;
}

/* ========== Globalization Infrastructure ========== */
.global-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.global-card {
  padding: 24px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
  transition: all 0.3s;
}

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

.global-card-icon {
  width: 44px; height: 44px;
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  color: var(--accent);
}

.global-card h4 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 8px;
}

.global-card p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.65;
}

.global-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.global-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-1);
  padding: 3px 8px;
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  letter-spacing: 0.03em;
}

/* Language hero strip */
.lang-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  justify-content: center;
  margin: 32px 0;
  padding: 20px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.lang-strip-item {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  color: var(--text-2);
  padding: 4px 10px;
  transition: color 0.2s;
  cursor: default;
}

.lang-strip-item:hover {
  color: var(--accent);
}

.lang-strip-item.active {
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
}

/* ========== Supplier Section ========== */
.supplier-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.supplier-module {
  padding: 32px 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
}

.supplier-module h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.supplier-module-icon {
  width: 36px; height: 36px;
  border: 1px solid var(--gold);
  background: var(--gold-soft);
  display: grid;
  place-items: center;
  color: var(--gold);
  flex-shrink: 0;
}

.supplier-module-sub {
  font-size: 13px;
  color: var(--text-2);
  margin-bottom: 20px;
  padding-left: 48px;
}

.cert-tiers {
  display: flex;
  gap: 12px;
  margin: 16px 0;
  padding-left: 48px;
}

.cert-tier {
  flex: 1;
  padding: 14px 10px;
  text-align: center;
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  position: relative;
}

.cert-tier.gold {
  border-color: var(--gold);
  background: var(--gold-soft);
}

.cert-tier-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.cert-tier-name {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-0);
}

.cert-tier.gold .cert-tier-name {
  color: var(--gold);
}

.module-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.module-list li {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.6;
  padding-left: 20px;
  position: relative;
}

.module-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 12px;
}

/* ========== Services Ecosystem ========== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  padding: 28px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
  transition: all 0.3s;
}

.service-card:hover {
  border-color: var(--green);
  transform: translateY(-3px);
}

.service-card-icon {
  width: 48px; height: 48px;
  border: 1px solid var(--green);
  background: var(--green-soft);
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  color: var(--green);
}

.service-card h4 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.65;
}

.service-card ul {
  list-style: none;
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.service-card ul li {
  font-size: 12.5px;
  color: var(--text-2);
  padding-left: 16px;
  position: relative;
}

.service-card ul li::before {
  content: '·';
  position: absolute;
  left: 4px;
  color: var(--green);
  font-weight: 700;
}

/* ========== AI Assistant ========== */
.ai-assistant-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.ai-card {
  padding: 26px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  position: relative;
  transition: all 0.3s;
}

.ai-card:hover {
  border-color: var(--accent-line);
  background: var(--surface-2);
}

.ai-card-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.ai-card h4 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.ai-card p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.65;
}

/* ========== Developer & Data Section ========== */
.dev-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
}

.dev-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 20px;
}

.dev-features li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.dev-features-icon {
  width: 36px; height: 36px;
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
  display: grid;
  place-items: center;
  color: var(--accent);
  flex-shrink: 0;
}

.dev-features-content h5 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 4px;
}

.dev-features-content p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.6;
}

/* ========== Data Intelligence ========== */
.data-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.data-card {
  padding: 24px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
}

.data-card-icon {
  width: 40px; height: 40px;
  border: 1px solid var(--gold);
  background: var(--gold-soft);
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  color: var(--gold);
}

.data-card h4 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 8px;
}

.data-card p {
  font-size: 12.5px;
  color: var(--text-2);
  line-height: 1.6;
}

.data-card-metric {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  font-weight: 500;
}

/* ========== Revenue Section ========== */
.revenue-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}

.revenue-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.revenue-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.revenue-dot {
  width: 12px; height: 12px;
  flex-shrink: 0;
  border-radius: 2px;
}

.revenue-info {
  flex: 1;
}

.revenue-name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 2px;
}

.revenue-desc {
  font-size: 12.5px;
  color: var(--text-2);
}

.revenue-pct {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}

/* ========== Architecture with base layer ========== */
.arch-base-layer {
  margin-top: 8px;
  padding: 24px 32px;
  background: linear-gradient(135deg, var(--accent-soft) 0%, rgba(167, 139, 250, 0.08) 100%);
  border: 1px solid var(--accent-line);
  position: relative;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  align-items: start;
}

.arch-base-label {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.05em;
  writing-mode: vertical-lr;
  text-orientation: mixed;
  transform: rotate(180deg);
  text-align: center;
}

.arch-base-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px 20px;
  list-style: none;
}

.arch-base-features li {
  font-size: 13px;
  color: var(--text-1);
  padding-left: 16px;
  position: relative;
  line-height: 1.5;
}

.arch-base-features li::before {
  content: '◇';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 10px;
  top: 3px;
}

/* ========== Section anchor spacing for fixed nav ========== */
section[id] {
  scroll-margin-top: 80px;
}

/* ========== Scroll Reveal ========== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .section-title { font-size: 32px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { justify-self: center; max-width: 380px; }
  .market-structures, .pain-grid, .action-grid { grid-template-columns: 1fr 1fr; }
  .player-spotlights { grid-template-columns: 1fr; }
  .chart-grid-2 { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: repeat(3, 1fr); }
  .arch-layer { grid-template-columns: 60px 1fr; }
  .arch-layer-side { display: none; }
  .timeline-grid { grid-template-columns: 1fr; }
  .timeline::before {
    left: 9px; right: auto;
    top: 0; bottom: 0;
    width: 1px; height: auto;
  }
  .timeline-phase { padding-top: 0; padding-left: 40px; min-height: 80px; }
  .timeline-dot { top: 0; left: 0; }
  .timeline-time { position: relative; top: 0; margin-bottom: 8px; }
  .competition-table { display: block; overflow-x: auto; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .global-grid, .services-grid, .ai-assistant-grid, .data-grid-3 { grid-template-columns: 1fr 1fr; }
  .supplier-grid-2 { grid-template-columns: 1fr; }
  .dev-grid { grid-template-columns: 1fr; }
  .revenue-layout { grid-template-columns: 1fr; }
  .arch-base-layer { grid-template-columns: 50px 1fr; }
  .arch-base-features { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .container { padding: 0 18px; }
  section { padding: 64px 0; }
  .hero { padding: 120px 0 64px; }
  .section-title { font-size: 26px; }
  .hero-title { font-size: 40px; }
  .hero-subtitle { font-size: 16px; }
  .hero-stats { grid-template-columns: 1fr; }
  .market-structures, .pain-grid, .action-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr 1fr; }
  .arch-layer { grid-template-columns: 48px 1fr; padding: 20px; gap: 16px; }
  .arch-layer-num { font-size: 32px; }
  .arch-layer-main h3 { font-size: 17px; }
  .footer-quote-main { font-size: 22px; }
  .global-grid, .services-grid, .ai-assistant-grid, .data-grid-3 { grid-template-columns: 1fr; }
  .supplier-module { padding: 24px 20px; }
  .cert-tiers { padding-left: 0; }
  .supplier-module-sub { padding-left: 0; }
  .arch-base-layer { grid-template-columns: 1fr; padding: 20px; gap: 16px; }
  .arch-base-label {
    writing-mode: horizontal-tb;
    transform: none;
    text-align: left;
  }
  .arch-base-features { grid-template-columns: 1fr; }
}