/* ============================================================
   QooBot Website — Apple-inspired Design System
   ============================================================ */

/* --- CSS Variables / Design Tokens --- */
:root {
  --color-bg: #ffffff;
  --color-bg-secondary: #f5f5f7;
  --color-text: #1d1d1f;
  --color-text-secondary: #86868b;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-border: #d2d2d7;
  --color-hero-gradient-start: #fbfbfd;
  --color-hero-gradient-end: #f5f5f7;
  --color-card-bg: #ffffff;
  --color-footer-bg: #f5f5f7;
  --color-footer-text: #6e6e73;
  --nav-blur: rgba(255, 255, 255, 0.72);

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --max-width: 1200px;
  --nav-height: 48px;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-elevated: 0 8px 40px rgba(0, 0, 0, 0.08);

  --transition-fast: 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-smooth: 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

[data-theme="dark"] {
  --color-bg: #000000;
  --color-bg-secondary: #1d1d1f;
  --color-text: #f5f5f7;
  --color-text-secondary: #a1a1a6;
  --color-accent: #2997ff;
  --color-accent-hover: #40a9ff;
  --color-border: #424245;
  --color-hero-gradient-start: #000000;
  --color-hero-gradient-end: #1d1d1f;
  --color-card-bg: #1d1d1f;
  --color-footer-bg: #1d1d1f;
  --color-footer-text: #86868b;
  --nav-blur: rgba(0, 0, 0, 0.72);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-elevated: 0 8px 40px rgba(0, 0, 0, 0.4);
}

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

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.47059;
  letter-spacing: -0.022em;
  transition: background var(--transition-smooth), color var(--transition-smooth);
  overflow-x: hidden;
}

/* --- Skip Link (keyboard accessibility) --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 10000;
  padding: 12px 20px;
  background: var(--color-accent);
  color: #ffffff;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid #ffffff;
  outline-offset: -3px;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

/* --- Focus styles (keyboard navigation) --- */
:focus-visible {
  outline: 2.5px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: 4px;
}

a:focus-visible {
  outline-offset: 2px;
}

button:focus-visible {
  outline-offset: 3px;
}

/* Suppress focus ring for mouse clicks */
:focus:not(:focus-visible) {
  outline: none;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--nav-blur);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-smooth), border-color var(--transition-smooth);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  text-decoration: none;
}

.nav-logo svg,
.nav-logo img {
  height: 28px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: -0.01em;
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  opacity: 1;
  color: var(--color-text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-lang {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 4px 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav-lang:hover {
  border-color: var(--color-text);
  color: var(--color-text);
}

.nav-theme {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--color-text);
  opacity: 0.8;
  padding: 4px;
  transition: opacity var(--transition-fast);
}

.nav-theme:hover {
  opacity: 1;
}

/* --- Nav Dropdown --- */
.nav-dropdown-trigger {
  position: relative;
}

.nav-dropdown-link {
  display: flex !important;
  align-items: center;
  gap: 4px;
}

.dropdown-arrow {
  font-size: 0.6rem;
  transition: transform var(--transition-fast);
  display: inline-block;
}

.nav-dropdown-trigger:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--nav-blur);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px 0;
  min-width: 260px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
  box-shadow: var(--shadow-elevated);
  z-index: 1001;
}

.nav-dropdown-trigger:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(10px);
}

.nav-dropdown-group {
  padding: 8px 0;
}

.nav-dropdown-group + .nav-dropdown-group {
  border-top: 1px solid var(--color-border);
}

.nav-dropdown-label {
  display: block;
  padding: 6px 20px 4px;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  font-weight: 600;
}

.nav-dropdown a {
  display: block;
  padding: 6px 20px;
  font-size: 0.8rem !important;
  color: var(--color-text) !important;
  white-space: nowrap;
  transition: background var(--transition-fast);
}

.nav-dropdown a:hover {
  background: var(--color-bg-secondary);
  opacity: 1 !important;
}

.nav-dropdown-mega {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  width: 100%;
  transform: translateY(0);
  padding: 0;
  min-width: auto;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  border-top: none;
}

.nav-dropdown-trigger:hover .nav-dropdown-mega {
  transform: translateY(0);
}

.nav-dropdown-mega-inner {
  display: flex;
  flex-direction: row;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 24px 28px;
  gap: 0;
}

.nav-dropdown-mega .nav-dropdown-group {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 0 20px;
  border-top: none;
}

.nav-dropdown-mega .nav-dropdown-group + .nav-dropdown-group {
  border-left: 1px solid var(--color-border);
}

.nav-dropdown-mega .nav-dropdown-label {
  padding: 0 8px 8px;
  margin-bottom: 4px;
  font-size: 0.7rem;
}

.nav-dropdown-mega a {
  font-size: 0.78rem !important;
  padding: 6px 8px;
  border-radius: 6px;
}

.nav-dropdown-desc {
  display: block;
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  padding: 0 8px 8px;
  line-height: 1.4;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  margin: 4px 0;
  transition: transform var(--transition-fast);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  padding: 0 24px;
  text-align: center;
  width: 100%;
  aspect-ratio: 1920 / 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-img,
.hero-bg-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(0,0,0,0.5) 0%,
    rgba(0,0,0,0.3) 40%,
    rgba(0,0,0,0.65) 100%);
}

[data-theme="dark"] .hero-bg-overlay {
  background: linear-gradient(180deg,
    rgba(0,0,0,0.6) 0%,
    rgba(0,0,0,0.4) 40%,
    rgba(0,0,0,0.75) 100%);
}

/* Particle canvas */
#hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

/* Animated gradient overlay */
.hero-gradient-anim {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 20% 40%, rgba(41,151,255,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 45% at 75% 35%, rgba(175,82,222,0.10) 0%, transparent 55%),
    radial-gradient(ellipse 55% 40% at 50% 70%, rgba(0,113,227,0.08) 0%, transparent 50%);
  animation: gradientShift 8s ease-in-out infinite alternate;
}

@keyframes gradientShift {
  0% {
    opacity: 0.6;
    transform: scale(1);
  }
  33% {
    opacity: 1;
    transform: scale(1.08);
  }
  66% {
    opacity: 0.7;
    transform: scale(0.96);
  }
  100% {
    opacity: 1;
    transform: scale(1.05);
  }
}

/* Hero glow effect */
.hero-glow {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse at center,
    rgba(41, 151, 255, 0.15) 0%,
    rgba(0, 113, 227, 0.05) 40%,
    transparent 70%);
  pointer-events: none;
  animation: heroGlow 6s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 1; transform: translate(-50%, -50%) scale(1.15); }
}

.hero-content {
  position: relative;
  z-index: 1;
}

/* Hero text on dark background */
.hero .hero-tagline {
  color: #ffffff;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.hero .hero-subtitle {
  color: rgba(255,255,255,0.8);
  text-shadow: 0 1px 10px rgba(0,0,0,0.4);
}

.hero .hero-logo img {
  filter: brightness(0) invert(1) drop-shadow(0 2px 12px rgba(0,0,0,0.4));
}

.hero-logo {
  margin-bottom: 36px;
}

.hero-logo img,
.hero-logo svg {
  width: 300px;
  max-width: 80vw;
  height: auto;
  animation: heroLogoFloat 4s ease-in-out infinite alternate;
}

@keyframes heroLogoFloat {
  0% { transform: translateY(0); }
  100% { transform: translateY(-8px); }
}

.hero-tagline {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  max-width: 900px;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--color-text-secondary);
  max-width: 900px;
  margin-bottom: 44px;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 64px;
}

/* Gradient text */
.gradient-text {
  background: linear-gradient(135deg, #2997ff 0%, #40a9ff 30%, #69b1ff 60%, #91caff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Hero outline button on dark bg */
.btn-outline-hero {
  background: transparent;
  color: #ffffff;
  border: 1.5px solid rgba(255,255,255,0.5);
  backdrop-filter: blur(4px);
}

.btn-outline-hero:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.8);
  color: #ffffff;
  transform: scale(1.02);
}

.arrow-right {
  display: inline-block;
  transition: transform var(--transition-fast);
}

.btn-outline-hero:hover .arrow-right {
  transform: translateX(4px);
}

/* Hero Stats */
.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stat {
  text-align: center;
}

.hero-stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.hero-stat-label {
  display: block;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 4px;
}

/* Scroll indicator */
.hero-scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.scroll-indicator {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, rgba(255,255,255,0.4), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(1); transform-origin: top; }
  50% { transform: scaleY(0.3); transform-origin: top; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 28px;
  border-radius: 980px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #ffffff;
  transform: scale(1.02);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}

.btn-outline:hover {
  background: var(--color-accent);
  color: #ffffff;
  transform: scale(1.02);
}

.btn-large {
  padding: 16px 36px;
  font-size: 1rem;
}

/* --- Sections --- */
.section {
  padding: 100px 24px;
}

.section-dark {
  background: var(--color-bg-secondary);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 650px;
  line-height: 1.55;
  margin-bottom: 48px;
}

/* --- Feature Grid --- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

.feature-card-icon {
  font-size: 2rem;
  margin-bottom: 20px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-bg-secondary);
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* --- Product Cards --- */
.product-hero {
  padding: 120px 24px 60px;
  text-align: center;
}

.product-hero .section-label {
  margin-bottom: 8px;
}

.product-list {
  display: flex;
  flex-direction: column;
  gap: 80px;
  padding: 0 24px 100px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.product-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.product-card:nth-child(even) .product-card-visual {
  order: -1;
}

.product-card-visual {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.product-card-img,
.product-card-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.product-card-info h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.product-card-info .tagline {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.product-card-info .desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.product-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 28px;
}

.product-spec {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.product-spec .label {
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-spec .value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* --- About Page --- */
.about-hero {
  padding: 120px 24px 80px;
  text-align: center;
  background: linear-gradient(180deg, var(--color-hero-gradient-start), var(--color-hero-gradient-end));
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px 100px;
}

.about-content h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  margin-top: 60px;
}

.about-content h2:first-child {
  margin-top: 0;
}

.about-hero-img {
  max-width: var(--max-width);
  margin: -40px auto 0;
  padding: 0 24px;
}

.about-hero-pic {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.about-content p {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.about-values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.about-value {
  text-align: center;
  padding: 28px 20px;
}

.about-value .icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.about-value h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.about-value p {
  font-size: 0.85rem;
}

/* --- Footer --- */
.footer {
  background: var(--color-footer-bg);
  padding: 40px 24px 24px;
  font-size: 0.75rem;
  color: var(--color-footer-text);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 40px;
  margin-bottom: 24px;
}

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a {
  color: var(--color-footer-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.1, 0.25, 1),
    transform 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--nav-blur);
    backdrop-filter: saturate(180%) blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 1rem;
  }

  .nav-dropdown-trigger {
    position: static;
  }

  .nav-dropdown {
    position: static;
    transform: none;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    border-radius: 0;
    padding: 0;
    min-width: auto;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    display: none;
    padding-left: 12px;
  }

  .nav-dropdown-trigger:hover .nav-dropdown {
    display: block;
    transform: none;
  }

  .nav-dropdown a {
    font-size: 0.9rem !important;
    padding: 8px 0;
  }

  .nav-dropdown-group {
    padding: 4px 0;
  }

  .nav-dropdown-group + .nav-dropdown-group {
    border-top: none;
  }

  .nav-dropdown-label {
    padding: 8px 0 4px;
  }

  .nav-dropdown-mega {
    position: static;
    display: none;
    width: auto;
    border-radius: 0;
    padding: 0;
    padding-left: 12px;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    box-shadow: none;
    transform: none;
  }

  .nav-dropdown-trigger:hover .nav-dropdown-mega {
    display: block;
    transform: none;
  }

  .nav-dropdown-mega-inner {
    display: block;
    padding: 0;
    max-width: none;
  }

  .nav-dropdown-mega .nav-dropdown-group {
    padding: 4px 0;
  }

  .nav-dropdown-mega .nav-dropdown-group + .nav-dropdown-group {
    border-left: none;
    border-top: none;
  }

  .nav-dropdown-mega a {
    font-size: 0.9rem !important;
    padding: 8px 0;
    border-radius: 0;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    padding: 40px 20px;
    aspect-ratio: auto;
    min-height: 100vh;
  }

  .section {
    padding: 60px 20px;
  }

  .product-card {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .product-card:nth-child(even) .product-card-visual {
    order: 0;
  }

  .footer-inner {
    flex-direction: column;
    gap: 24px;
  }

  .hero-stats {
    gap: 28px;
  }

  .hero-stat-number {
    font-size: 1.6rem;
  }

  .hero-glow {
    width: 400px;
    height: 300px;
  }

  .trust-logos {
    gap: 20px;
  }

  .trust-logo-item {
    font-size: 0.85rem;
  }

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

  .arch-layer-visual {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
  }

  .arch-layer-header-visual {
    min-width: auto;
  }

  .arch-layer-items {
    gap: 10px;
  }

  .vision-values {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .vision-section {
    padding: 80px 24px;
  }

  .footer-brand {
    max-width: 100%;
  }
}

/* --- Hardware Reference Designs --- */
.hardware-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.hardware-card {
  display: flex;
  flex-direction: column;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.hardware-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

.hardware-card-preview {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #fafafa;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow: hidden;
}

.hardware-card-preview img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.08));
  transition: transform 0.3s ease;
}

.hardware-card:hover .hardware-card-preview img {
  transform: scale(1.04);
}

.hardware-card-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hardware-card-icon {
  font-size: 1.5rem;
}

.hardware-card-info h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
}

.hardware-card-info p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0;
  flex: 1;
}

.hardware-card-count {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  background: rgba(0, 113, 227, 0.08);
  padding: 4px 12px;
  border-radius: 100px;
  align-self: flex-start;
  margin-top: 4px;
}

[data-theme="dark"] .hardware-card-count {
  background: rgba(41, 151, 255, 0.1);
}

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

/* --- Architecture / Ecosystem --- */
.eco-hero-img {
  max-width: 1440px;
  width: 100%;
  aspect-ratio: 1440 / 1080;
  margin: 0 auto 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.eco-hero-pic {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.arch-overview {
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin-top: 48px;
}

.arch-layer {
  padding: 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-card-bg);
}

.arch-layer-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.arch-layer-icon {
  font-size: 1.5rem;
}

.arch-layer-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.arch-layer-desc {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-left: auto;
}

/* Layer accent borders */
.arch-layer-core { border-left: 3px solid #0071e3; }
.arch-layer-platform { border-left: 3px solid #30b158; }
.arch-layer-quality { border-left: 3px solid #f5a623; }
.arch-layer-community { border-left: 3px solid #af52de; }

[data-theme="dark"] .arch-layer-core { border-left-color: #2997ff; }
[data-theme="dark"] .arch-layer-platform { border-left-color: #30d158; }
[data-theme="dark"] .arch-layer-quality { border-left-color: #ff9f0a; }
[data-theme="dark"] .arch-layer-community { border-left-color: #bf5af2; }

/* Eco Card Grid */
.eco-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.eco-card {
  display: flex;
  gap: 16px;
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  border: 1px solid transparent;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.eco-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-card);
}

.eco-card-icon {
  font-size: 2rem;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  flex-shrink: 0;
}

.eco-card-body {
  flex: 1;
  min-width: 0;
}

.eco-card-body h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.eco-card-body p {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin-bottom: 12px;
}

.eco-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.eco-card-tags span {
  font-size: 0.68rem;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  padding: 2px 10px;
  border-radius: 980px;
  border: 1px solid var(--color-border);
}

.eco-link {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.eco-link:hover {
  opacity: 0.7;
}

/* Eco Badge */
.eco-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 2px 10px;
  border-radius: 980px;
  line-height: 1.5;
  text-transform: uppercase;
}

.eco-badge.status-alpha {
  background: #e8f5e9;
  color: #2e7d32;
}

.eco-badge.status-design {
  background: #fff3e0;
  color: #e65100;
}

[data-theme="dark"] .eco-badge.status-alpha {
  background: rgba(48, 209, 88, 0.15);
  color: #30d158;
}

[data-theme="dark"] .eco-badge.status-design {
  background: rgba(255, 159, 10, 0.15);
  color: #ff9f0a;
}

/* Status Table */
.status-table-wrap {
  overflow-x: auto;
  margin-top: 32px;
}

.status-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.status-table th {
  text-align: left;
  padding: 12px 16px;
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  border-bottom: 2px solid var(--color-border);
}

.status-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.status-table td:last-child {
  color: var(--color-text-secondary);
  font-size: 0.82rem;
}

.status-table tbody tr:hover {
  background: var(--color-bg-secondary);
}

.status-table td strong {
  color: var(--color-text);
}

/* --- Utility --- */
.text-center {
  text-align: center;
}

.mt-16 {
  margin-top: 16px;
}

.mt-24 {
  margin-top: 24px;
}

.mt-48 {
  margin-top: 48px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* --- Trust Banner --- */
.trust-banner {
  padding: 40px 24px;
  border-bottom: 1px solid var(--color-border);
}

.trust-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: 28px;
}

.trust-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.trust-logo-item {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  opacity: 0.5;
  letter-spacing: -0.01em;
  transition: opacity var(--transition-fast);
}

.trust-logo-item:hover {
  opacity: 0.8;
}

/* --- Product Preview Grid --- */
.product-preview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.product-preview-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.product-preview-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-elevated);
}

.product-preview-visual {
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-preview-emoji {
  font-size: 3.5rem;
  opacity: 0.5;
}

.product-preview-info {
  padding: 28px;
}

.product-preview-tier {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
  display: block;
}

.product-preview-info h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.product-preview-info p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin-bottom: 16px;
}

.product-preview-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.product-preview-specs span {
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

/* Color Tags */
.product-color-tags {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 16px;
}

.color-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  flex-shrink: 0;
}

.color-label {
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  margin-left: 4px;
}

/* Visual Backgrounds */
.max-visual {
  background: linear-gradient(135deg, #e8eaf6 0%, #c5cae9 100%);
}

.nova-visual {
  background: linear-gradient(135deg, #fce4ec 0%, #f8bbd0 100%);
}

[data-theme="dark"] .max-visual {
  background: linear-gradient(135deg, rgba(121,134,203,0.15) 0%, rgba(121,134,203,0.06) 100%);
}

[data-theme="dark"] .nova-visual {
  background: linear-gradient(135deg, rgba(244,143,177,0.15) 0%, rgba(244,143,177,0.06) 100%);
}

/* Responsive */
@media (max-width: 768px) {
  .product-preview-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* --- Brain Grid --- */
.brain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.brain-card {
  background: var(--color-card-bg);
  padding: 36px 32px;
  position: relative;
  transition: background var(--transition-fast);
}

.brain-card:hover {
  background: var(--color-bg-secondary);
}

.brain-card-number {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.brain-card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-bg-secondary);
}

.brain-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.brain-card p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* --- Architecture Visual --- */
.arch-visual {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}

.arch-layer-visual {
  border-radius: var(--radius-md);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  gap: 32px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  border: 1px solid transparent;
}

.arch-layer-visual:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-card);
  border-color: var(--color-border);
}

.layer-core {
  background: linear-gradient(135deg, rgba(0,113,227,0.08), rgba(0,113,227,0.02));
  border-left: 3px solid #0071e3;
}
.layer-platform {
  background: linear-gradient(135deg, rgba(48,177,88,0.08), rgba(48,177,88,0.02));
  border-left: 3px solid #30b158;
}
.layer-quality {
  background: linear-gradient(135deg, rgba(245,166,35,0.08), rgba(245,166,35,0.02));
  border-left: 3px solid #f5a623;
}
.layer-eco {
  background: linear-gradient(135deg, rgba(175,82,222,0.08), rgba(175,82,222,0.02));
  border-left: 3px solid #af52de;
}

[data-theme="dark"] .layer-core { background: linear-gradient(135deg, rgba(41,151,255,0.08), rgba(41,151,255,0.02)); border-left-color: #2997ff; }
[data-theme="dark"] .layer-platform { background: linear-gradient(135deg, rgba(48,209,88,0.08), rgba(48,209,88,0.02)); border-left-color: #30d158; }
[data-theme="dark"] .layer-quality { background: linear-gradient(135deg, rgba(255,159,10,0.08), rgba(255,159,10,0.02)); border-left-color: #ff9f0a; }
[data-theme="dark"] .layer-eco { background: linear-gradient(135deg, rgba(191,90,242,0.08), rgba(191,90,242,0.02)); border-left-color: #bf5af2; }

.arch-layer-header-visual {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  min-width: 120px;
}

.arch-layer-num {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  letter-spacing: 0.06em;
  background: var(--color-bg-secondary);
  padding: 2px 8px;
  border-radius: 4px;
}

.arch-layer-items {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.arch-layer-items span {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  padding: 4px 0;
}

/* --- Vision & Mission Section --- */
.vision-section {
  position: relative;
  padding: 140px 24px 120px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,113,227,0.04) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(124,58,237,0.04) 0%, transparent 55%),
    radial-gradient(ellipse 50% 50% at 85% 20%, rgba(41,151,255,0.03) 0%, transparent 50%);
}

[data-theme="dark"] .vision-section {
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(41,151,255,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(124,58,237,0.06) 0%, transparent 55%),
    radial-gradient(ellipse 50% 50% at 85% 20%, rgba(41,151,255,0.04) 0%, transparent 50%);
}

/* Cosmic particles (pure CSS stars) */
.vision-stars {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.vision-star {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 50%;
  opacity: 0;
  animation: starTwinkle var(--star-duration, 3s) ease-in-out infinite;
  animation-delay: var(--star-delay, 0s);
}

.vision-star:nth-child(odd) {
  background: #7c3aed;
  width: 1.5px;
  height: 1.5px;
}

.vision-star:nth-child(3n) {
  width: 3px;
  height: 3px;
  background: #f5a623;
}

@keyframes starTwinkle {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 0.6; }
}

.vision-content {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
}

/* Vision Banner */
.vision-banner-visual {
  margin: 48px 0 36px;
  text-align: center;
}

.vision-banner-img {
  width: 100%;
  max-width: 900px;
  border-radius: var(--radius-lg);
  margin: 0 auto;
  filter: drop-shadow(0 8px 32px rgba(0,113,227,0.15));
  transition: filter var(--transition-smooth);
}

[data-theme="dark"] .vision-banner-img {
  filter: drop-shadow(0 8px 32px rgba(41,151,255,0.2));
}

/* Vision Overview */
.vision-overview-visual {
  margin: 36px 0 48px;
  text-align: center;
}

.vision-overview-img {
  width: 100%;
  max-width: 1000px;
  border-radius: var(--radius-lg);
  margin: 0 auto;
  filter: drop-shadow(0 6px 24px rgba(124,58,237,0.12));
}

[data-theme="dark"] .vision-overview-img {
  filter: drop-shadow(0 6px 24px rgba(124,58,237,0.18));
}

/* --- Vision Section Divider --- */
.vision-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 60px 0 48px;
  opacity: 0.4;
}

.vision-divider-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.vision-divider-diamond {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  transform: rotate(45deg);
  border-radius: 1px;
  flex-shrink: 0;
}

/* Vision Cards Grid */
.vision-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.vision-card {
  position: relative;
  display: flex;
  gap: 18px;
  padding: 28px 24px;
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
  overflow: hidden;
}

.vision-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg,
    rgba(0,113,227,0.03) 0%,
    rgba(124,58,237,0.03) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.vision-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,113,227,0.1), 0 4px 16px rgba(0,0,0,0.06);
  border-color: rgba(0,113,227,0.3);
}

.vision-card:hover::before {
  opacity: 1;
}

[data-theme="dark"] .vision-card:hover {
  box-shadow: 0 12px 40px rgba(41,151,255,0.15), 0 4px 16px rgba(0,0,0,0.3);
  border-color: rgba(41,151,255,0.3);
}

/* Vision Card shimmer effect */
.vision-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 80%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent,
    rgba(255,255,255,0.05),
    transparent);
  transition: left 0.6s ease;
}

.vision-card:hover::after {
  left: 120%;
}

.vision-card-num {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, #0071e3 0%, #4f46e5 100%);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  font-family: var(--font-display);
  box-shadow: 0 4px 12px rgba(0,113,227,0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.vision-card:hover .vision-card-num {
  transform: scale(1.08) rotate(-3deg);
  box-shadow: 0 6px 20px rgba(0,113,227,0.4);
}

[data-theme="dark"] .vision-card-num {
  background: linear-gradient(135deg, #2997ff 0%, #7c3aed 100%);
  box-shadow: 0 4px 16px rgba(41,151,255,0.35);
}

.vision-card-content {
  position: relative;
  z-index: 1;
  flex: 1;
  min-width: 0;
}

.vision-card-content h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--color-text), var(--color-text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: all 0.3s ease;
}

.vision-card:hover .vision-card-content h3 {
  background: linear-gradient(135deg, #0071e3, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="dark"] .vision-card:hover .vision-card-content h3 {
  background: linear-gradient(135deg, #2997ff, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.vision-card-content p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Vision Roadmap */
.vision-roadmap {
  margin-top: 72px;
  padding: 48px 0 32px;
}

.vision-roadmap-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  text-align: center;
  margin-bottom: 48px;
  background: linear-gradient(135deg, var(--color-text), var(--color-text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.vision-roadmap-visual {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  overflow-x: auto;
  padding: 24px 0 40px;
  position: relative;
  -webkit-overflow-scrolling: touch;
}

.vision-roadmap-visual::-webkit-scrollbar {
  height: 4px;
}

.vision-roadmap-visual::-webkit-scrollbar-track {
  background: transparent;
}

.vision-roadmap-visual::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

.roadmap-phase {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  min-width: 120px;
  position: relative;
}

.roadmap-year {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.02em;
  transition: transform 0.3s ease, color 0.3s ease;
}

.roadmap-phase:hover .roadmap-year {
  transform: scale(1.15);
  color: #7c3aed;
}

.roadmap-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 3px var(--color-accent), 0 0 16px rgba(0,113,227,0.3);
  z-index: 1;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.roadmap-phase:hover .roadmap-dot {
  transform: scale(1.3);
  box-shadow: 0 0 0 4px var(--color-accent), 0 0 28px rgba(0,113,227,0.5);
}

.roadmap-dot-glow {
  background: #7c3aed;
  box-shadow: 0 0 0 3px #7c3aed, 0 0 24px rgba(124,58,237,0.6), 0 0 48px rgba(124,58,237,0.2);
  animation: roadmapPulse 2.5s ease-in-out infinite;
}

@keyframes roadmapPulse {
  0%, 100% {
    box-shadow: 0 0 0 3px #7c3aed, 0 0 24px rgba(124,58,237,0.6), 0 0 48px rgba(124,58,237,0.2);
  }
  50% {
    box-shadow: 0 0 0 5px #7c3aed, 0 0 36px rgba(124,58,237,0.8), 0 0 64px rgba(124,58,237,0.3);
  }
}

.roadmap-line {
  flex: 1;
  height: 2px;
  min-width: 48px;
  background: linear-gradient(90deg,
    var(--color-accent),
    #4f46e5 50%,
    #7c3aed);
  margin-top: 30px;
  align-self: flex-start;
  border-radius: 2px;
  position: relative;
}

.roadmap-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent,
    rgba(124,58,237,0.4),
    transparent);
  animation: roadmapFlow 3s ease-in-out infinite;
}

@keyframes roadmapFlow {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.roadmap-label {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  text-align: center;
  line-height: 1.55;
  transition: color 0.3s ease;
}

.roadmap-phase:hover .roadmap-label {
  color: var(--color-text);
}

/* Vision Mission Quote */
.vision-mission-quote {
  margin-top: 64px;
  padding: 48px 40px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg,
    rgba(0,113,227,0.04) 0%,
    rgba(124,58,237,0.04) 50%,
    rgba(245,166,35,0.02) 100%);
  border: 1.5px solid rgba(0,113,227,0.12);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.vision-mission-quote::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 200px;
  background: radial-gradient(ellipse at center,
    rgba(0,113,227,0.06) 0%,
    transparent 70%);
  pointer-events: none;
}

[data-theme="dark"] .vision-mission-quote {
  background: linear-gradient(135deg,
    rgba(41,151,255,0.06) 0%,
    rgba(124,58,237,0.06) 50%,
    rgba(245,166,35,0.03) 100%);
  border-color: rgba(41,151,255,0.15);
}

.vision-mission-quote blockquote {
  margin: 0;
  padding: 0;
  border: none;
  position: relative;
  z-index: 1;
}

.vision-mission-quote blockquote::before {
  content: '"';
  position: absolute;
  top: -36px;
  left: 50%;
  transform: translateX(-50%);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 5rem;
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.12;
  line-height: 1;
}

.vision-mission-quote blockquote p {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.7;
  color: var(--color-text);
  margin: 0;
  max-width: 700px;
  margin: 0 auto;
}

.vision-mission-quote blockquote p strong {
  background: linear-gradient(135deg, #0071e3, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

[data-theme="dark"] .vision-mission-quote blockquote p strong {
  background: linear-gradient(135deg, #2997ff, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Vision Read More link */
.vision-read-more {
  margin-top: 48px;
}

.vision-read-more .btn {
  padding: 14px 36px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: 980px;
  background: transparent;
  border: 1.5px solid var(--color-accent);
  color: var(--color-accent);
  transition: all 0.35s ease;
}

.vision-read-more .btn:hover {
  background: var(--color-accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,113,227,0.25);
}

[data-theme="dark"] .vision-read-more .btn:hover {
  box-shadow: 0 8px 24px rgba(41,151,255,0.3);
}

/* Old vision values (kept for backward compatibility) */
.vision-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.vision-value {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius-md);
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.vision-value:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

.vision-value-icon {
  font-size: 2.2rem;
  display: block;
  margin-bottom: 16px;
}

.vision-value h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.vision-value p {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Responsive for Vision */
@media (max-width: 768px) {
  .vision-section {
    padding: 100px 20px 80px;
  }

  .vision-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .vision-card {
    padding: 24px 20px;
  }

  .vision-open-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .vision-open-item {
    padding: 24px 14px;
  }

  .vision-open-icon {
    font-size: 1.5rem;
  }

  .vision-roadmap-visual {
    flex-wrap: wrap;
    justify-content: center;
    gap: 28px;
    padding: 20px 0 32px;
  }

  .roadmap-phase {
    min-width: 100px;
  }

  .roadmap-line {
    display: none;
  }

  .roadmap-label {
    font-size: 0.75rem;
  }

  .vision-divider {
    margin: 40px 0 32px;
  }

  .vision-mission-quote {
    margin-top: 48px;
    padding: 36px 24px;
  }

  .vision-mission-quote blockquote::before {
    font-size: 3.5rem;
    top: -28px;
  }

  .vision-mission-quote blockquote p {
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  .vision-open-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Industry Comparison Table --- */
.compare-table-wrapper {
  overflow-x: auto;
  margin-top: 48px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  -webkit-overflow-scrolling: touch;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  min-width: 860px; /* 保证至少 8 列完整显示 */
}

.compare-table thead th {
  position: sticky;
  top: 0;
  background: var(--color-bg-secondary);
  padding: 16px 14px;
  text-align: center;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
  border-bottom: 2px solid var(--color-border);
}

.compare-table thead th:first-child {
  position: sticky;
  left: 0;
  z-index: 3;
  text-align: left;
  min-width: 110px;
  background: var(--color-bg-secondary);
}

.compare-qoobot {
  background: linear-gradient(180deg, rgba(0,113,227,0.08), rgba(0,113,227,0.02)) !important;
  color: var(--color-accent) !important;
  font-size: 0.85rem !important;
  font-weight: 700 !important;
}

[data-theme="dark"] .compare-qoobot {
  background: linear-gradient(180deg, rgba(41,151,255,0.12), rgba(41,151,255,0.04)) !important;
}

.compare-table tbody td {
  padding: 14px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  line-height: 1.4;
  transition: background var(--transition-fast);
}

.compare-table tbody td:first-child {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--color-card-bg);
  text-align: left;
  font-weight: 600;
  color: var(--color-text);
  min-width: 110px;
  font-size: 0.85rem;
}

.compare-table tbody tr:hover td {
  background: var(--color-bg-secondary);
}

.compare-table tbody tr:hover td:first-child {
  background: var(--color-bg-secondary);
}

.compare-best {
  color: #2e7d32 !important;
  font-weight: 600 !important;
  background: rgba(46,125,50,0.06) !important;
}

[data-theme="dark"] .compare-best {
  color: #30d158 !important;
  background: rgba(48,209,88,0.1) !important;
}

.compare-table tbody tr:hover .compare-best {
  background: rgba(46,125,50,0.1) !important;
}

[data-theme="dark"] .compare-table tbody tr:hover .compare-best {
  background: rgba(48,209,88,0.15) !important;
}

.compare-worst {
  color: var(--color-text-secondary) !important;
  opacity: 0.5;
}

/* --- Comparison Highlights --- */
.compare-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.compare-highlight {
  text-align: center;
  padding: 28px 20px;
  border-radius: var(--radius-md);
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.compare-highlight:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

.compare-highlight-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 12px;
}

.compare-highlight strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.compare-highlight p {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* Comparison table — responsive */
@media (max-width: 768px) {
  .compare-table-wrapper {
    border-radius: var(--radius-md);
  }

  .compare-table {
    min-width: 660px;
    font-size: 0.78rem;
  }

  .compare-table thead th,
  .compare-table tbody td {
    padding: 10px 8px;
    font-size: 0.72rem;
  }

  .compare-table thead th:first-child,
  .compare-table tbody td:first-child {
    min-width: 80px;
  }

  .compare-highlights {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* --- CTA Section --- */
.cta-section {
  position: relative;
  overflow: hidden;
  padding: 100px 24px;
}

.cta-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse at center,
    rgba(41, 151, 255, 0.12) 0%,
    transparent 70%);
  pointer-events: none;
}

.cta-note {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: 28px;
}

/* --- Footer Brand --- */
.footer-brand {
  max-width: 260px;
}

.footer-logo {
  height: 28px;
  width: auto;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.8rem;
  color: var(--color-footer-text);
  line-height: 1.55;
}

[data-theme="dark"] .footer-logo {
  filter: brightness(0) invert(1);
}

/* --- Drawing Showcase --- */
.drawing-showcase {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.drawing-item {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.drawing-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

.drawing-item-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #fdfdfd;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow: hidden;
}

[data-theme="dark"] .drawing-item-img {
  background: #fdfdfd;
}

.drawing-item-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.3s ease;
  filter: drop-shadow(0 1px 4px rgba(0,0,0,0.1));
}

.drawing-item:hover .drawing-item-img img {
  transform: scale(1.06);
}

.drawing-item-label {
  display: block;
  padding: 12px 16px 4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.drawing-item-cat {
  display: block;
  padding: 0 16px 14px;
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.03em;
}

@media (max-width: 1024px) {
  .drawing-showcase {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

/* ============================================================
   Accessibility: prefers-reduced-motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .hero-glow {
    animation: none;
    opacity: 0.4;
  }

  .hero-gradient-anim {
    animation: none;
  }

  .hero-logo {
    animation: none;
  }

  .particle {
    display: none;
  }

  .vision-star {
    animation: none;
  }

  .roadmap-dot-glow {
    animation: none;
    box-shadow: 0 0 12px rgba(175, 82, 222, 0.5);
  }
}