/* ═══════════════════════════════════════════
   DONGTHINK — Cinematic Precision
   ═══════════════════════════════════════════ */

:root {
  --bg: #050507;
  --bg-surface: #0a0a0e;
  --bg-elevated: #101015;
  --bg-glass: rgba(8, 8, 12, 0.7);

  --text: #f0f0f5;
  --text-2: rgba(240, 240, 245, 0.6);
  --text-3: rgba(240, 240, 245, 0.32);

  --accent: #00e5ff;
  --accent-glow: rgba(0, 229, 255, 0.12);
  --accent-subtle: rgba(0, 229, 255, 0.06);

  --border: rgba(255, 255, 255, 0.06);
  --border-2: rgba(255, 255, 255, 0.1);

  --container: 1200px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);

  --font-display: "DM Sans", "Noto Sans SC", sans-serif;
  --font-body: "DM Sans", "Noto Sans SC", system-ui, sans-serif;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

body.lang-cn .en,
body.lang-en .cn { display: none; }
body.menu-open { overflow: hidden; }

::selection { background: rgba(0, 229, 255, 0.18); color: var(--text); }

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ─── Grain Overlay ─── */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

/* ─── Layout ─── */
.section-inner,
.nav-inner,
.footer-inner,
.manifesto-inner {
  width: min(var(--container), calc(100% - var(--gutter) * 2));
  margin: 0 auto;
}

/* ═══════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════ */
.navbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  padding: 0 var(--gutter);
  transition: background 400ms, backdrop-filter 400ms, box-shadow 400ms;
}

.navbar.scrolled {
  background: rgba(5, 5, 7, 0.65);
  backdrop-filter: blur(24px) saturate(1.2);
  box-shadow: 0 1px 0 var(--border);
}

.nav-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo { display: inline-flex; align-items: center; flex-shrink: 0; }
.logo-img {
  height: 24px;
  width: auto;
  opacity: 0.88;
  transition: opacity 300ms;
}
.nav-logo:hover .logo-img { opacity: 1; }

.nav-center {
  display: none;
  align-items: center;
  gap: 0;
  padding: 0.35rem 0.45rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
}
@media (min-width: 1024px) { .nav-center { display: flex; } }

.nav-link {
  position: relative;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-2);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  transition: color 250ms, background 250ms;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--text-3);
  transition: border-color 250ms;
}

.lang-toggle:hover { border-color: var(--border-2); }
.lang-btn { transition: color 200ms; }
.lang-btn.active { color: var(--text); }
.lang-divider { opacity: 0.3; }

.mobile-toggle {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  transition: border-color 250ms;
}

.mobile-toggle:hover { border-color: var(--border-2); }
.mobile-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  border-radius: 999px;
  background: var(--text);
  transition: transform 300ms var(--ease), opacity 200ms;
}
.mobile-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.mobile-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

@media (min-width: 1024px) { .mobile-toggle { display: none; } }

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 72px 0 auto;
  z-index: 90;
  padding: 0 var(--gutter);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 250ms var(--ease), transform 250ms var(--ease), visibility 250ms;
}

.mobile-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }
@media (min-width: 1024px) { .mobile-menu { display: none; } }

.mobile-menu-inner {
  background: rgba(8, 8, 12, 0.96);
  border: 1px solid var(--border-2);
  border-radius: 16px;
  padding: 0.5rem 1rem;
  backdrop-filter: blur(24px);
}

.mobile-link {
  display: block;
  padding: 1rem 0;
  color: var(--text-2);
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 200ms, padding-left 200ms;
}

.mobile-link:last-child { border-bottom: none; }
.mobile-link:hover { color: var(--text); padding-left: 0.5rem; }

/* ═══════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

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

.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 45%;
  opacity: 0;
  animation: heroImgIn 2s 0.1s var(--ease) forwards;
  will-change: transform;
}

@keyframes heroImgIn {
  from { opacity: 0; transform: scale(1.03); }
  to   { opacity: 0.45; transform: scale(1); }
}

.hero-vignette {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 45%, transparent 20%, var(--bg) 85%),
    linear-gradient(180deg, rgba(5,5,7,0.5) 0%, transparent 25%, transparent 65%, var(--bg) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
  padding: 0 var(--gutter);
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 6.5vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin-bottom: 1.75rem;
}

body.lang-cn .hero-title {
  letter-spacing: 0.02em;
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 900;
}

.hero-line {
  display: block;
}

.hero-line + .hero-line {
  margin-top: 0.1em;
}

.hero-sub {
  font-size: clamp(0.88rem, 1.4vw, 1rem);
  color: var(--text-2);
  line-height: 1.75;
  max-width: 540px;
  margin: 0 auto 2.5rem;
}

.hero-cta {
  display: flex;
  gap: 0.85rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.8rem 1.8rem;
  border-radius: 999px;
  transition: all 280ms var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
}

.btn-primary:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(255, 255, 255, 0.12);
}

.btn-outline {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border-2);
}

.btn-outline:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.03);
}

/* Scroll Indicator */
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-track {
  width: 1px;
  height: 48px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.scroll-thumb {
  width: 100%;
  height: 50%;
  background: var(--accent);
  border-radius: 999px;
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0% { transform: translateY(-100%); opacity: 0; }
  50% { opacity: 1; }
  100% { transform: translateY(200%); opacity: 0; }
}

/* ═══════════════════════════════════════════
   MANIFESTO
   ═══════════════════════════════════════════ */
.manifesto {
  padding: clamp(6rem, 16vh, 12rem) 0;
  position: relative;
}

.manifesto::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(var(--container), calc(100% - var(--gutter) * 2));
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-2), transparent);
}

.manifesto-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 4.5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  text-align: center;
  background: linear-gradient(180deg, var(--text) 30%, var(--text-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

body.lang-cn .manifesto-text {
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 900;
  letter-spacing: 0.04em;
}

/* ═══════════════════════════════════════════
   SECTIONS — Common
   ═══════════════════════════════════════════ */
.section {
  position: relative;
  padding: clamp(5rem, 10vh, 8rem) 0;
}

.section + .section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(var(--container), calc(100% - var(--gutter) * 2));
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-2), transparent);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.label-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.label-line {
  flex: 1;
  height: 1px;
  background: var(--border);
  max-width: 60px;
}

.label-text {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ═══════════════════════════════════════════
   PRODUCT SHOWCASE
   ═══════════════════════════════════════════ */
/* ─── Product Sections ─── */
.product-section {
  margin-bottom: clamp(4rem, 8vh, 6rem);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-surface);
}

.product-section:last-child { margin-bottom: 0; }

.product-header {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
}

@media (min-width: 768px) {
  .product-header {
    grid-template-columns: 0.9fr 1.1fr;
  }
  .product-header--flip {
    grid-template-columns: 1.1fr 0.9fr;
  }
  .product-header--flip .product-img-wrap { order: 2; }
  .product-header--flip .product-info { order: 1; }
}

.product-img-wrap {
  overflow: hidden;
  background: var(--bg-elevated);
}

.product-img-wrap img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform 600ms var(--ease);
}

.product-section:hover .product-img-wrap img {
  transform: scale(1.03);
}

.product-info {
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.product-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 0.75rem;
}

.product-tagline {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.showcase-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 0.25rem 0.65rem;
  background: var(--accent-subtle);
  border: 1px solid rgba(0, 229, 255, 0.1);
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border-top: 1px solid var(--border);
}

.feature-grid--5 {
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 900px) {
  .feature-grid--5 {
    grid-template-columns: repeat(5, 1fr);
  }
}

.feature-card {
  padding: clamp(1.25rem, 3vw, 1.5rem);
  background: var(--bg-surface);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: background 300ms;
}

.feature-card:hover {
  background: var(--bg-elevated);
}

.feature-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--accent-subtle);
  border: 1px solid rgba(0, 229, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 0.2rem;
  flex-shrink: 0;
}

.feature-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.feature-text {
  font-size: 0.72rem;
  color: var(--text-3);
  line-height: 1.6;
}

@media (max-width: 640px) {
  .feature-grid,
  .feature-grid--5 {
    grid-template-columns: 1fr;
  }
}

.showcase-specs {
  display: flex;
  gap: 2rem;
}

.spec {
  display: flex;
  flex-direction: column;
}

.spec-val {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--text);
}

.spec-unit {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 0.3rem;
}

/* ═══════════════════════════════════════════
   TECHNOLOGY
   ═══════════════════════════════════════════ */
.section--tech {
  overflow: hidden;
}

.tech-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.tech-bg-img {
  position: absolute;
  inset: -10%;
  width: 120%;
  height: 120%;
  object-fit: cover;
  opacity: 0.12;
  filter: saturate(0.6);
}

.tech-bg-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 40%, transparent 10%, var(--bg) 70%),
    linear-gradient(180deg, var(--bg) 0%, transparent 15%, transparent 85%, var(--bg) 100%);
}

.tech-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(0.95rem, 2.4vw, 1.55rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 3.5rem;
}

.tech-headline-logo {
  display: inline-block;
  height: 1.1em;
  width: auto;
  vertical-align: -0.15em;
  margin-right: 0.15em;
  opacity: 0.9;
}

/* Stats */
.stats {
  display: flex;
  justify-content: flex-start;
  gap: 0;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.stat {
  padding: 1.25rem 2.5rem 1.25rem 0;
  border-right: 1px solid var(--border);
  position: relative;
}

.stat:last-child {
  border-right: none;
  padding-right: 0;
}

.stat:first-child { padding-left: 0; }

@media (max-width: 640px) {
  .stat {
    padding: 1rem 1.5rem 1rem 0;
  }
}

.stat-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 2.8rem);
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--text);
}

.stat-suffix {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(0.85rem, 1.6vw, 1.1rem);
  color: var(--accent);
  margin-left: 0.1em;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.04em;
  margin-top: 0.5rem;
}

/* Tech Description */
.tech-desc {
  max-width: 680px;
  margin-bottom: 4rem;
}

.tech-desc p {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.85;
}


/* ═══════════════════════════════════════════
   COMPETITIVE ADVANTAGE
   ═══════════════════════════════════════════ */
.advantage-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3vw, 2rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.5rem;
}

body.lang-cn .advantage-headline {
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.advantage-sub {
  font-size: 0.82rem;
  color: var(--text-3);
  margin-bottom: 3rem;
}

.advantage-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (min-width: 768px) {
  .advantage-layout {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

.radar-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

.radar-chart {
  width: 100%;
  max-width: 400px;
}

.radar-chart text {
  font-family: var(--font-body);
}

.advantage-points {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.advantage-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.advantage-item-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-subtle);
  border: 1px solid rgba(0, 229, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.advantage-item-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.35rem;
}

.advantage-item-text {
  font-size: 0.78rem;
  color: var(--text-2);
  line-height: 1.65;
}

/* ═══════════════════════════════════════════
   PARTNERS
   ═══════════════════════════════════════════ */
.partners-card {
  background: #fff;
  border-radius: 20px;
  padding: clamp(2rem, 5vw, 3.5rem);
  text-align: center;
}

.partners-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.2vw, 1.5rem);
  letter-spacing: -0.02em;
  color: #111;
  margin-bottom: 2.5rem;
}

body.lang-cn .partners-headline {
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.partners-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(2rem, 4vw, 3.5rem);
}

.partners-grid img {
  height: 28px;
  width: auto;
  object-fit: contain;
  opacity: 0.55;
  transition: opacity 300ms;
}

.partners-grid img:hover {
  opacity: 1;
}

/* ═══════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════ */
.section--contact { text-align: center; }

.contact-body { max-width: 560px; margin: 0 auto; }

.contact-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.contact-headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.5vw, 2.1rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 3rem;
}

body.lang-cn .contact-headline {
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.contact-qr-row {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.qr-box {
  width: 140px;
  height: 140px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-2);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 400ms var(--ease), border-color 300ms;
}

.qr-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.qr-box--placeholder {
  background: var(--bg-elevated);
  border-style: dashed;
}

.qr-box:hover {
  transform: scale(1.04);
  border-color: rgba(255, 255, 255, 0.15);
}

.qr-caption {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-top: 0.75rem;
}

.contact-card--info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.contact-email {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color 250ms;
  position: relative;
}

.contact-email::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 300ms var(--ease);
}

.contact-email:hover { color: var(--text); }
.contact-email:hover::after { width: 100%; }

.contact-loc {
  font-size: 0.85rem;
  color: var(--text-3);
}

/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
.footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
}

.footer-logo {
  height: 18px;
  width: auto;
  opacity: 0.4;
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--text-3);
}

/* ═══════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════ */
.anim-up {
  opacity: 0;
  transform: translateY(32px);
  animation: animUp 0.9s var(--ease) forwards;
  animation-delay: var(--delay, 0s);
}

@keyframes animUp {
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
}

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

.reveal-stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal-stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.08s; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.16s; }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.24s; }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.32s; }

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 767px) {
  .showcase-specs { gap: 1.25rem; }
  .stats { gap: 0; }
  .stat { padding: 0.75rem 1.25rem 0.75rem 0; }
}

@media (max-width: 480px) {
  .hero-eyebrow { font-size: 0.68rem; letter-spacing: 0.1em; }
  .product-name { font-size: 1.3rem; }
  .stat { padding: 0.75rem 1rem 0.75rem 0; }
  .stat-num { font-size: 1.5rem; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal, .anim-up { opacity: 1; transform: none; transition: none; animation: none; }
  .hero-img { opacity: 0.45; animation: none; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.08); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.14); }