/* ============================================================
   AIEWI v5.0 - Complete Design System
   Based on v4, with layout optimizations:
   - Architecture: 2x2 grid wings, centered π
   - Pipeline: horizontal ellipse layout
   - Hero: 5 stat cards (no empty slot)
   ============================================================ */
/* fonts.css 已移至 index.html 中以非阻塞方式加载 */

:root {
  --white: #FFFFFF;
  --sky-50: #f0f9ff;
  --sky-100: #e0f2fe;
  --sky-200: #bae6fd;
  --sky-300: #7dd3fc;
  --sky-400: #38bdf8;
  --sky-500: #0ea5e9;
  --sky-600: #0284c7;
  --sky-700: #0369a1;
  --cyan-400: #22d3ee;
  --cyan-500: #06b6d4;
  --cyan-600: #0891b2;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --gradient-sky: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 50%, #7dd3fc 100%);
  --gradient-sky-v: linear-gradient(180deg, #0ea5e9 0%, #38bdf8 100%);
  --shadow-glow: 0 8px 32px rgba(14,165,233,0.25);
  --shadow-glow-lg: 0 16px 48px rgba(14,165,233,0.35);
  --shadow-card: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-card-hover: 0 16px 48px rgba(14,165,233,0.18);
  --shadow-xl: 0 24px 48px rgba(0,0,0,0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; }

body {
  font-family: "Noto Sans SC", "Sora", -apple-system, sans-serif;
  background: var(--white);
  color: var(--gray-900);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

::selection { background: rgba(14,165,233,0.15); }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--sky-400); border-radius: 3px; }

h1,h2,h3,h4,h5,h6 {
  font-family: "Sora", "Noto Sans SC", sans-serif;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.text-gradient {
  background: var(--gradient-sky);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: grad-shift 4s ease infinite;
}

@keyframes grad-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 768px) { .container { padding: 0 20px; } }

/* ========== Reveal System - Multiple Types ========== */
.reveal {
  opacity: 0;
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.revealed { opacity: 1; transform: none !important; }

/* Default: fade up */
.reveal { transform: translateY(50px); }

/* Slide from left */
.reveal-left { transform: translateX(-60px); }

/* Slide from right */
.reveal-right { transform: translateX(60px); }

/* Scale up */
.reveal-scale { transform: scale(0.92); }

/* Rotate in */
.reveal-rotate { transform: perspective(800px) rotateY(8deg) translateY(30px); }

/* Stagger delays */
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }
.reveal-d4 { transition-delay: 0.4s; }
.reveal-d5 { transition-delay: 0.5s; }
.reveal-d6 { transition-delay: 0.6s; }
.reveal-d7 { transition-delay: 0.7s; }
.reveal-d8 { transition-delay: 0.8s; }

/* Noise texture overlay */
.noise-overlay::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px;
  pointer-events: none;
  z-index: 0;
}

/* ========== Navigation ========== */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: all 0.4s var(--ease);
}

.nav.nav-scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid rgba(14,165,233,0.08);
  box-shadow: 0 2px 16px rgba(0,0,0,0.04);
}

.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 32px;
  height: 72px; display: flex; align-items: center; justify-content: space-between;
}

.logo {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; transition: transform 0.3s var(--ease);
}
.logo:hover { transform: translateY(-2px); }

.logo-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--gradient-sky);
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 18px; color: var(--white);
  box-shadow: var(--shadow-glow);
  font-family: "Sora", sans-serif;
  position: relative; overflow: hidden;
}

.logo-icon::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%);
  transform: translateX(-100%);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
}

.logo-wordmark {
  font-size: 24px; font-weight: 800; letter-spacing: -0.02em;
  color: var(--gray-900); font-family: "Sora", sans-serif;
}

.nav-links { display: none; list-style: none; gap: 4px; }
@media (min-width: 768px) { .nav-links { display: flex; } }

.nav-links a {
  padding: 10px 20px; border-radius: var(--radius-md);
  font-size: 15px; font-weight: 500; color: var(--gray-600);
  text-decoration: none; transition: all 0.3s var(--ease);
  position: relative;
}

.nav-links a::after {
  content: ""; position: absolute;
  bottom: 8px; left: 20px; right: 20px; height: 2px;
  background: var(--gradient-sky);
  transform: scaleX(0); transition: transform 0.3s var(--ease);
  border-radius: 2px;
}

.nav-links a:hover { color: var(--sky-600); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-cta {
  display: none; padding: 10px 24px; border-radius: var(--radius-md);
  font-size: 15px; font-weight: 600;
  background: var(--gradient-sky); color: var(--white);
  text-decoration: none; border: none; cursor: pointer;
  box-shadow: var(--shadow-glow);
  transition: all 0.3s var(--ease);
  font-family: "Sora", sans-serif;
  position: relative; overflow: hidden;
}

@media (min-width: 768px) { .nav-cta { display: inline-flex; } }

.nav-cta::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.2) 50%, transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease);
}

.nav-cta:hover::before { transform: translateX(100%); }
.nav-cta:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow-lg); }

.nav-mobile-toggle {
  display: flex; width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border: none; background: transparent; cursor: pointer;
  color: var(--gray-700); border-radius: var(--radius-sm);
}
@media (min-width: 768px) { .nav-mobile-toggle { display: none; } }

/* 移动端导航菜单展开样式 */
@media (max-width: 767px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(24px);
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s var(--ease);
    z-index: 1000;
  }

  .nav-links.nav-links-open {
    display: flex;
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a {
    padding: 16px 20px;
    border-bottom: 1px solid rgba(14, 165, 233, 0.1);
  }

  .nav-links a:last-child {
    border-bottom: none;
  }

  .nav-cta {
    display: block;
    margin-top: 16px;
    text-align: center;
  }
}

/* ========== Hero ========== */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  padding: 140px 32px 100px;
  background: linear-gradient(180deg, var(--white) 0%, var(--sky-50) 100%);
}

.hero-bg { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }

.mesh-gradient {
  position: absolute; inset: 0;
  background:
    radial-gradient(at 20% 30%, rgba(14,165,233,0.08) 0%, transparent 50%),
    radial-gradient(at 80% 70%, rgba(6,182,212,0.06) 0%, transparent 50%),
    radial-gradient(at 50% 50%, rgba(56,189,248,0.04) 0%, transparent 70%);
  animation: mesh-breathe 8s ease-in-out infinite;
}

@keyframes mesh-breathe {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

.grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(14,165,233,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14,165,233,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 100%);
  animation: grid-pulse 4s ease-in-out infinite;
}

@keyframes grid-pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

.hero-content {
  position: relative; z-index: 2;
  max-width: 1200px; width: 100%;
}

.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

@media (max-width: 968px) {
  .hero-split { grid-template-columns: 1fr; gap: 60px; }
}

.hero-left { text-align: left; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 20px 8px 12px; border-radius: 100px;
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(14,165,233,0.2);
  color: var(--sky-600); font-size: 14px; font-weight: 500;
  margin-bottom: 40px; backdrop-filter: blur(10px);
  box-shadow: 0 4px 12px rgba(14,165,233,0.1);
  transition: all 0.3s var(--ease);
}

.hero-badge:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(14,165,233,0.2);
}

.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--sky-500);
  animation: pulse-ring 2s ease-in-out infinite;
}

@keyframes pulse-ring {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(14,165,233,0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(14,165,233,0); }
}

.hero h1 {
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 800; line-height: 1.05; letter-spacing: -0.04em;
  margin-bottom: 24px; font-family: "Sora", sans-serif;
}

.pi-symbol {
  display: inline-block;
  animation: pi-flip 4s ease-in-out infinite;
  transform-style: preserve-3d;
}

@keyframes pi-flip {
  0%, 100% { transform: rotateY(0deg); }
  50% { transform: rotateY(180deg); }
}

.hero-tagline {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 500; color: var(--gray-500);
  letter-spacing: 0.08em; margin-bottom: 24px;
  font-family: "Sora", sans-serif;
}

.hero-desc {
  font-size: 17px; color: var(--gray-600);
  max-width: 560px; margin-bottom: 40px; line-height: 1.8;
}

.hero-actions {
  display: flex; gap: 16px; flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 36px; border-radius: var(--radius-lg);
  font-size: 16px; font-weight: 600;
  font-family: "Sora", sans-serif;
  text-decoration: none; border: none; cursor: pointer;
  transition: all 0.3s var(--ease);
  position: relative; overflow: hidden;
}

.btn::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.2) 50%, transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease);
}

.btn:hover::before { transform: translateX(100%); }

.btn-primary {
  background: var(--gradient-sky); color: var(--white);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-lg);
}

.btn-ghost {
  background: var(--white); color: var(--sky-600);
  border: 2px solid var(--sky-300);
  box-shadow: var(--shadow-card);
}

.btn-ghost:hover {
  border-color: var(--sky-500); background: var(--sky-50);
  transform: translateY(-3px); box-shadow: var(--shadow-card-hover);
}

.btn svg { width: 18px; height: 18px; }

/* Hero Stats */
.hero-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-card {
  padding: 28px;
  border-radius: var(--radius-xl);
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(14,165,233,0.12);
  transition: all 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-sky);
  opacity: 0;
  transition: opacity 0.4s;
}

.stat-card:hover::after { opacity: 0.04; }

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--sky-400);
}

.stat-card-lg { grid-column: span 2; }

.stat-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: var(--sky-50);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  position: relative; z-index: 1;
  color: var(--sky-500);
}

.stat-val {
  font-size: 40px; font-weight: 800;
  letter-spacing: -0.03em; line-height: 1;
  margin-bottom: 6px;
  font-family: "Sora", sans-serif;
  position: relative; z-index: 1;
}

.stat-label {
  font-size: 14px; color: var(--gray-600); font-weight: 500;
  position: relative; z-index: 1;
}

.stat-note {
  font-size: 12px; color: var(--gray-400); margin-top: 8px;
  position: relative; z-index: 1;
}


/* ========== Section Dividers ========== */
.section-divider {
  height: 120px;
  position: relative;
  overflow: hidden;
}

.section-divider-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.section-divider-wave svg {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 80px;
}

/* ========== Sections ========== */
.section {
  padding: 120px 32px;
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) { .section { padding: 160px 40px; } }

.section-light { background: var(--white); }

.section-gray {
  background: var(--gray-50);
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 80px;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 100px;
  background: rgba(14,165,233,0.08);
  border: 1px solid rgba(14,165,233,0.15);
  color: var(--sky-600);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
  font-family: "Sora", sans-serif;
}

.section-title {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  line-height: 1.1;
  font-family: "Sora", sans-serif;
}

.section-desc {
  font-size: 18px;
  color: var(--gray-500);
  line-height: 1.8;
  max-width: 680px;
  margin: 0 auto;
}

/* ========== Architecture - Grid Layout ========== */
.arch-layout {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

@media (max-width: 968px) {
  .arch-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .arch-wing {
    grid-template-columns: 1fr;
  }
}

.arch-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.arch-center-orb {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--sky-300);
  box-shadow: var(--shadow-glow);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  z-index: 2;
}

.arch-center-orb::before {
  content: "";
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  border: 2px dashed var(--sky-200);
  animation: orb-spin 20s linear infinite;
}

@keyframes orb-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.arch-center-pi {
  font-size: 48px;
  font-weight: 900;
  background: var(--gradient-sky);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-family: "Sora", sans-serif;
  line-height: 1;
}

.arch-center-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-600);
  margin-top: 8px;
}

.arch-connector {
  width: 2px;
  height: 40px;
  background: linear-gradient(180deg, var(--sky-300), transparent);
  margin: 16px auto;
}

.arch-wing {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto auto;
  gap: 12px;
}

.arch-wing-header {
  grid-column: span 2;
  margin-bottom: 4px;
}

.arch-wing-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 100px;
  background: var(--sky-50);
  border: 1px solid var(--sky-200);
  color: var(--sky-700);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
  font-family: "Sora", sans-serif;
}

.arch-wing-badge-alt {
  background: rgba(6,182,212,0.08);
  border-color: rgba(6,182,212,0.2);
  color: var(--cyan-600);
}

.arch-wing-desc {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.5;
}

.arch-node {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid var(--gray-200);
  transition: all 0.4s var(--ease);
  cursor: default;
}

.arch-node:hover {
  border-color: var(--sky-300);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.arch-node-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  background: var(--sky-50);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--sky-500);
  transition: all 0.3s var(--ease);
}

.arch-node:hover .arch-node-icon {
  background: var(--gradient-sky);
  color: var(--white);
  box-shadow: var(--shadow-glow);
}

.arch-node-info h4 {
  font-size: 14px; font-weight: 700;
  margin-bottom: 3px; color: var(--gray-800);
}

.arch-node-info p {
  font-size: 12px; color: var(--gray-500); line-height: 1.4;
}

/* ========== VisionForge Immersive ========== */
.immersive-card {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  position: relative;
  margin-bottom: 48px;
  box-shadow: var(--shadow-xl);
  background: var(--white);
}

.immersive-visual {
  position: relative;
  padding: 32px;
  background: linear-gradient(135deg, var(--sky-50) 0%, var(--sky-100) 100%);
  min-height: 200px;
  overflow: hidden;
}

/* Mock UI Dashboard */
.mock-ui {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 12px;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  font-size: 11px;
  max-width: 600px;
  margin: 0 auto;
}

.mock-sidebar {
  background: var(--gray-50);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mock-sidebar-item {
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--gray-500);
  font-weight: 500;
  transition: all 0.2s;
}

.mock-sidebar-item.active {
  background: var(--gradient-sky);
  color: var(--white);
  box-shadow: var(--shadow-glow);
}

.mock-main {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-topbar {
  display: flex;
  gap: 6px;
  align-items: center;
}

.mock-tab {
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--gray-100);
  color: var(--gray-500);
  font-weight: 500;
  font-size: 10px;
}

.mock-tab.active {
  background: var(--sky-500);
  color: var(--white);
}

.mock-chart {
  flex: 1;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  align-items: flex-end;
  gap: 4px;
  min-height: 80px;
}

.mock-bar {
  flex: 1;
  border-radius: 3px 3px 0 0;
  background: var(--sky-200);
  transition: all 0.6s var(--ease-out);
  min-height: 8px;
}

.mock-bar:nth-child(odd) { background: var(--sky-400); }
.mock-bar:nth-child(3) { background: var(--sky-500); }

@media (max-width: 640px) {
  .mock-ui { grid-template-columns: 1fr; }
  .mock-sidebar { flex-direction: row; flex-wrap: wrap; }
}

.immersive-content {
  padding: 48px;
}

.immersive-eyebrow {
  font-size: 12px; font-weight: 600;
  color: var(--sky-600); letter-spacing: 0.08em;
  text-transform: uppercase; margin-bottom: 12px;
  font-family: "Sora", sans-serif;
}

.immersive-content h3 {
  font-size: 32px; font-weight: 800; margin-bottom: 16px;
}

.immersive-content > p {
  font-size: 16px; color: var(--gray-600);
  line-height: 1.8; margin-bottom: 32px;
}

.immersive-stats {
  display: flex; gap: 32px; align-items: center;
  flex-wrap: wrap;
}

.im-stat { display: flex; flex-direction: column; gap: 4px; }

.im-stat-val {
  font-size: 32px; font-weight: 800;
  letter-spacing: -0.02em; font-family: "Sora", sans-serif;
}

.im-stat-label {
  font-size: 13px; color: var(--gray-500); font-weight: 500;
}

.im-stat-divider {
  width: 1px; height: 40px; background: var(--gray-200);
}

@media (max-width: 768px) {
  .immersive-content { padding: 32px 24px; }
}

/* ========== Duo Showcase ========== */
.duo-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}

@media (max-width: 768px) { .duo-showcase { grid-template-columns: 1fr; } }

.duo-card {
  border-radius: var(--radius-xl);
  padding: 40px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  position: relative;
  transition: all 0.4s var(--ease);
  overflow: hidden;
}

.duo-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-sky);
  transform: scaleX(0);
  transition: transform 0.5s var(--ease);
  transform-origin: left;
}

.duo-card:hover::before { transform: scaleX(1); }

.duo-card:hover {
  border-color: var(--sky-300);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-6px);
}

.duo-card-number {
  position: absolute;
  top: 20px; right: 24px;
  font-size: 80px; font-weight: 900;
  color: var(--sky-50);
  font-family: "Sora", sans-serif;
  line-height: 1;
  transition: color 0.4s;
}

.duo-card:hover .duo-card-number { color: var(--sky-100); }

.duo-card-content { position: relative; z-index: 2; }

.duo-card h4 {
  font-size: 24px; font-weight: 800; margin-bottom: 8px;
}

.duo-card-tagline {
  font-size: 14px; color: var(--sky-600);
  font-weight: 600; margin-bottom: 16px;
}

.duo-card-desc {
  font-size: 15px; color: var(--gray-600);
  line-height: 1.7; margin-bottom: 20px;
}

.duo-highlights {
  display: flex; flex-wrap: wrap; gap: 8px;
}

.duo-hl {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 100px;
  background: var(--sky-50); border: 1px solid var(--sky-100);
  color: var(--sky-700); font-size: 12px; font-weight: 600;
}

.duo-hl svg { color: var(--sky-500); flex-shrink: 0; }

/* ========== Hardware Cards ========== */
.hw-showcase { margin-top: 64px; }

.hw-title {
  font-size: 24px; font-weight: 700;
  text-align: center; margin-bottom: 32px;
}

.hw-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 968px) { .hw-cards { grid-template-columns: 1fr; } }

.hw-card {
  border-radius: var(--radius-xl);
  background: var(--white);
  border: 1px solid var(--gray-200);
  transition: all 0.4s var(--ease);
  overflow: hidden;
}

.hw-card:hover {
  border-color: var(--sky-300);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-6px);
}

.hw-card-visual {
  padding: 32px;
  background: linear-gradient(135deg, var(--sky-50), var(--sky-100));
  display: flex; align-items: center; justify-content: center;
  min-height: 120px;
  transition: all 0.4s var(--ease);
}

.hw-card:hover .hw-card-visual {
  background: linear-gradient(135deg, var(--sky-100), var(--sky-200));
}

.hw-card-body {
  padding: 28px;
}

.hw-card-body h4 {
  font-size: 20px; font-weight: 700; margin-bottom: 12px;
}

.hw-card-body p {
  font-size: 14px; color: var(--gray-600);
  line-height: 1.7; margin-bottom: 16px;
}

.hw-card-stat {
  font-size: 13px; color: var(--gray-500); font-weight: 500;
}


/* ========== Chip Hero (Consumer) ========== */
.chip-hero {
  border-radius: var(--radius-2xl);
  padding: 64px 48px;
  background: linear-gradient(135deg, var(--gray-900) 0%, #1e293b 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
  margin-bottom: 48px;
}

.chip-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 40%, rgba(14,165,233,0.15), transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(6,182,212,0.1), transparent 50%);
  pointer-events: none;
}

.chip-hero-content {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 48px;
  align-items: center;
}

@media (max-width: 768px) {
  .chip-hero { padding: 40px 24px; }
  .chip-hero-content { grid-template-columns: 1fr; text-align: center; }
}

.chip-hero-visual {
  position: relative;
  width: 200px; height: 200px;
  margin: 0 auto;
}

.chip-ring {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(14,165,233,0.3);
}

.chip-ring-1 { width: 200px; height: 200px; animation: chip-pulse 3s ease-in-out infinite; }
.chip-ring-2 { width: 160px; height: 160px; animation: chip-pulse 3s ease-in-out infinite 0.5s; }
.chip-ring-3 { width: 120px; height: 120px; animation: chip-pulse 3s ease-in-out infinite 1s; }

@keyframes chip-pulse {
  0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.6; transform: translate(-50%, -50%) scale(1.05); }
}

.chip-core {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 80px; height: 80px;
  border-radius: 50%;
  background: var(--gradient-sky);
  display: flex; align-items: center; justify-content: center;
  font-size: 36px; font-weight: 900; color: var(--white);
  box-shadow: 0 0 60px rgba(14,165,233,0.4);
  font-family: "Sora", sans-serif;
}

.chip-eyebrow {
  font-size: 12px; font-weight: 600;
  color: var(--sky-400); letter-spacing: 0.08em;
  text-transform: uppercase; margin-bottom: 12px;
  font-family: "Sora", sans-serif;
}

.chip-hero-info h3 {
  font-size: 28px; font-weight: 800;
  color: var(--white); margin-bottom: 16px;
}

.chip-hero-info p {
  font-size: 15px; color: rgba(255,255,255,0.7);
  line-height: 1.7; margin-bottom: 20px;
}

.chip-specs { display: flex; gap: 12px; flex-wrap: wrap; }

@media (max-width: 768px) { .chip-specs { justify-content: center; } }

.chip-spec {
  padding: 6px 14px; border-radius: 100px;
  background: rgba(14,165,233,0.15);
  border: 1px solid rgba(14,165,233,0.3);
  color: var(--sky-300); font-size: 12px; font-weight: 600;
}

/* ========== Terminal Grid ========== */
.terminal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 968px) { .terminal-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .terminal-grid { grid-template-columns: 1fr; } }

.terminal-card {
  border-radius: var(--radius-xl);
  padding: 32px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  transition: all 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}

.terminal-card::before {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-sky);
  transform: scaleX(0);
  transition: transform 0.5s var(--ease);
  transform-origin: center;
}

.terminal-card:hover::before { transform: scaleX(1); }

.terminal-card-wide { grid-column: span 2; }

@media (max-width: 640px) { .terminal-card-wide { grid-column: span 1; } }

.terminal-card:hover {
  border-color: var(--sky-300);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-6px);
}

.tc-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-lg);
  background: var(--sky-50);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  transition: all 0.3s var(--ease);
}

.terminal-card:hover .tc-icon {
  background: var(--gradient-sky);
  box-shadow: var(--shadow-glow);
}

.terminal-card:hover .tc-icon svg { stroke: var(--white); }

.terminal-card h4 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.terminal-card p { font-size: 14px; color: var(--gray-600); line-height: 1.7; }

/* ========== Pipeline - SVG Ring (Ellipse) ========== */
.pipeline-ring-wrap {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
  aspect-ratio: 2 / 1;
}

.pipeline-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.pipeline-path {
  fill: none;
  stroke: var(--sky-200);
  stroke-width: 2;
}

.pipeline-path-glow {
  fill: none;
  stroke: url(#pipelineGrad);
  stroke-width: 3;
  stroke-dasharray: 200;
  stroke-dashoffset: 800;
  animation: pipeline-flow 4s linear infinite;
}

@keyframes pipeline-flow {
  to { stroke-dashoffset: 0; }
}

.pipeline-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 100px; height: 100px;
  border-radius: 50%;
  background: var(--gradient-sky);
  display: flex; align-items: center; justify-content: center;
  font-size: 40px; font-weight: 900; color: var(--white);
  box-shadow: var(--shadow-glow-lg);
  font-family: "Sora", sans-serif;
  z-index: 5;
}

.pipeline-node {
  position: absolute;
  width: 240px;
  z-index: 4;
}

.pipeline-node-1 { top: -10px; left: 50%; transform: translateX(-50%); }
.pipeline-node-2 { top: 50%; right: -10px; transform: translateY(-50%); }
.pipeline-node-3 { bottom: -10px; left: 50%; transform: translateX(-50%); }
.pipeline-node-4 { top: 50%; left: -10px; transform: translateY(-50%); }

@media (max-width: 768px) {
  .pipeline-ring-wrap {
    aspect-ratio: auto;
    max-width: 100%;
  }
  .pipeline-svg { display: none; }
  .pipeline-center {
    position: static;
    transform: none;
    margin: 0 auto 32px;
  }
  .pipeline-node {
    position: static;
    transform: none;
    width: 100%;
    max-width: 400px;
    margin: 0 auto 20px;
  }
}

.pn-card {
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-card);
  transition: all 0.4s var(--ease);
}

.pn-card:hover {
  border-color: var(--sky-300);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.pn-num {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--gradient-sky);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
  margin-bottom: 12px;
  font-family: "Sora", sans-serif;
}

.pn-card h5 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.pn-card p { font-size: 13px; color: var(--gray-500); line-height: 1.5; }

/* ========== About ========== */
.about-showcase {
  border-radius: var(--radius-2xl);
  padding: 64px 48px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-card);
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
}

.about-showcase::before {
  content: "";
  position: absolute;
  top: -100px; right: -100px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14,165,233,0.06), transparent 70%);
  pointer-events: none;
}

.about-main {
  max-width: 800px;
  margin: 0 auto 48px;
  text-align: center;
}

.about-quote {
  font-size: 120px; font-weight: 900;
  color: var(--sky-100);
  font-family: "Sora", sans-serif;
  line-height: 0.5; margin-bottom: 20px;
}

.about-main h3 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700; line-height: 1.5;
  margin-bottom: 24px; color: var(--gray-800);
}

.about-mission {
  font-size: 16px; color: var(--gray-500); line-height: 1.8;
}

.about-facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-top: 48px;
  border-top: 1px solid var(--gray-200);
}

@media (max-width: 768px) {
  .about-facts { grid-template-columns: repeat(2, 1fr); }
  .about-showcase { padding: 40px 24px; }
}

.about-fact { text-align: center; }

.about-fact-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: var(--sky-50);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 12px;
  transition: all 0.3s var(--ease);
}

.about-fact:hover .about-fact-icon {
  background: var(--gradient-sky);
  box-shadow: var(--shadow-glow);
}

.about-fact:hover .about-fact-icon svg { stroke: var(--white); }

.about-fact-label {
  font-size: 12px; color: var(--gray-400); font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 6px; font-family: "Sora", sans-serif;
}

.about-fact-value {
  font-size: 15px; font-weight: 600; color: var(--gray-800);
}

/* CTA Banner */
.cta-banner {
  border-radius: var(--radius-2xl);
  padding: 64px 48px;
  background: var(--gradient-sky);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.15), transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(255,255,255,0.1), transparent 50%);
  pointer-events: none;
}

.cta-banner > * { position: relative; z-index: 1; }

.cta-banner h3 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800; color: var(--white); margin-bottom: 12px;
}

.cta-banner p {
  font-size: 16px; color: rgba(255,255,255,0.8); margin-bottom: 28px;
}

.btn-white {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: var(--radius-lg);
  font-size: 16px; font-weight: 600;
  font-family: "Sora", sans-serif;
  background: var(--white); color: var(--sky-600);
  text-decoration: none; border: none; cursor: pointer;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  transition: all 0.3s var(--ease);
  position: relative; overflow: hidden;
}

.btn-white::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(14,165,233,0.1) 50%, transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease);
}

.btn-white:hover::before { transform: translateX(100%); }
.btn-white:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(0,0,0,0.2); }

/* ========== Footer ========== */
.footer {
  background: var(--gray-900); color: var(--white);
  padding: 64px 24px 32px;
}

.footer-inner { max-width: 1280px; margin: 0 auto; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 40px;
}

@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-brand-text {
  font-size: 14px; color: rgba(255,255,255,0.5);
  line-height: 1.6; margin-top: 12px;
}

.footer h5 {
  font-size: 12px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: rgba(255,255,255,0.4); margin-bottom: 16px;
  font-family: "Sora", sans-serif;
}

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

.footer a {
  font-size: 14px; color: rgba(255,255,255,0.6);
  text-decoration: none; transition: all 0.2s;
}

.footer a:hover { color: var(--white); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 12px;
}

.footer-copy { font-size: 13px; color: rgba(255,255,255,0.35); }

/* ========== Chat Widget ========== */
.chat-fab {
  position: fixed; bottom: 24px; right: 24px;
  z-index: 900;
  width: 56px; height: 56px;
  border-radius: var(--radius-lg);
  border: none; cursor: pointer;
  background: var(--gradient-sky);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-glow-lg);
  transition: all 0.3s var(--ease-out);
}

.chat-fab:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 20px 56px rgba(14,165,233,0.45);
}

.chat-fab svg { width: 24px; height: 24px; }

.fab-dot {
  position: absolute; top: 10px; right: 10px;
  width: 10px; height: 10px;
  border-radius: 50%; background: #4ade80;
  border: 2px solid var(--sky-500);
  animation: pulse-ring 2s infinite;
}

.chat-panel {
  position: fixed; bottom: 92px; right: 24px;
  z-index: 901;
  width: 380px; height: 520px;
  border-radius: var(--radius-xl);
  background: var(--white);
  border: 1px solid var(--gray-200);
  box-shadow: 0 24px 64px rgba(0,0,0,0.15);
  display: none; flex-direction: column;
  overflow: hidden;
}

.chat-panel.open {
  display: flex;
  animation: chat-in 0.3s var(--ease-out);
}

@keyframes chat-in {
  from { opacity: 0; transform: translateY(12px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.chat-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-100);
  background: var(--gray-50);
}

.chat-head-left { display: flex; align-items: center; gap: 10px; }

.chat-head-avatar {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: var(--gradient-sky);
  display: flex; align-items: center; justify-content: center;
  color: var(--white); font-weight: 800; font-size: 14px;
  font-family: "Sora", sans-serif;
}

.chat-head-info h4 { font-size: 14px; font-weight: 600; line-height: 1.2; }
.chat-head-info span { font-size: 11px; color: var(--gray-400); }

.chat-close-btn {
  width: 28px; height: 28px;
  border-radius: var(--radius-sm);
  border: none; background: transparent;
  color: var(--gray-400); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}

.chat-close-btn:hover { background: var(--gray-200); color: var(--gray-600); }

.chat-body {
  flex: 1; overflow-y: auto; padding: 16px;
  display: flex; flex-direction: column; gap: 12px;
}

.chat-msg { display: flex; gap: 8px; max-width: 85%; }
.chat-msg-bot { align-self: flex-start; }
.chat-msg-user { align-self: flex-end; flex-direction: row-reverse; }

.chat-bubble {
  padding: 10px 14px;
  border-radius: var(--radius-lg);
  font-size: 13px; line-height: 1.6;
}

.chat-msg-bot .chat-bubble {
  background: var(--gray-50); color: var(--gray-700);
  border-bottom-left-radius: 4px;
}

.chat-msg-user .chat-bubble {
  background: var(--gradient-sky); color: var(--white);
  border-bottom-right-radius: 4px;
}

.chat-typing {
  display: flex; gap: 4px;
  padding: 10px 14px;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border-bottom-left-radius: 4px;
  align-self: flex-start;
}

.chat-typing span {
  width: 6px; height: 6px;
  border-radius: 50%; background: var(--sky-400);
  animation: typing-bounce 1.2s infinite;
}

.chat-typing span:nth-child(2) { animation-delay: 0.15s; }
.chat-typing span:nth-child(3) { animation-delay: 0.3s; }

@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-4px); opacity: 1; }
}

.chat-quick {
  display: flex; gap: 6px; padding: 8px 16px;
  overflow-x: auto; flex-shrink: 0;
}

.chat-quick button {
  flex-shrink: 0; padding: 6px 14px;
  border-radius: 100px;
  border: 1px solid var(--gray-200);
  background: var(--white); color: var(--gray-600);
  font-size: 12px; font-family: inherit; font-weight: 500;
  cursor: pointer; transition: all 0.2s; white-space: nowrap;
}

.chat-quick button:hover {
  border-color: var(--sky-300); color: var(--sky-600);
  background: var(--sky-50);
}

.chat-input-bar {
  padding: 12px 14px;
  border-top: 1px solid var(--gray-100);
  display: flex; align-items: center; gap: 8px;
}

.chat-input-bar input {
  flex: 1; padding: 10px 16px;
  border-radius: 100px;
  border: 1px solid var(--gray-200);
  background: var(--gray-50);
  font-size: 13px; font-family: inherit;
  color: var(--gray-900); outline: none;
  transition: border-color 0.2s;
}

.chat-input-bar input:focus { border-color: var(--sky-400); background: var(--white); }
.chat-input-bar input::placeholder { color: var(--gray-400); }

.chat-send-btn {
  width: 36px; height: 36px;
  border-radius: 50%; border: none;
  background: var(--gradient-sky); color: var(--white);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all 0.2s; flex-shrink: 0;
}

.chat-send-btn:hover { box-shadow: var(--shadow-glow); transform: scale(1.05); }
.chat-send-btn svg { width: 14px; height: 14px; }

/* ========== Responsive ========== */
@media (max-width: 640px) {
  .hero { padding: 100px 20px 60px; }
  .section { padding: 80px 20px; }
  .hero h1 { font-size: 40px; }
  .chat-panel { width: calc(100vw - 48px); }
}

@media (max-width: 480px) {
  .about-facts { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}