/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #FFFFFF;
  --bg-2: #F8FAFC;
  --bg-3: #F1F5F9;
  --purple: #8B5CF6;
  --purple-light: #A78BFA;
  --purple-dark: #7C3AED;
  --blue: #3B82F6;
  --blue-light: #60A5FA;
  --text: #111827;
  --text-2: #374151;
  --text-3: #6B7280;
  --border: rgba(139,92,246,0.12);
  --glass-bg: rgba(255,255,255,0.7);
  --glass-border: rgba(255,255,255,0.5);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-lg: 0 24px 64px rgba(0,0,0,0.12);
  --shadow-purple: 0 8px 32px rgba(139,92,246,0.25);
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 { font-family: 'Syne', sans-serif; line-height: 1.1; font-weight: 800; }
h1 { font-size: clamp(2.8rem, 7vw, 5.5rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); font-weight: 700; }

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--purple);
  margin-bottom: 1rem;
}

.section-title {
  color: var(--text);
  margin-bottom: 3rem;
}

/* ===== UTILS ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  border-radius: 100px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--purple) 0%, var(--blue) 100%);
  color: #fff;
  padding: 0.75rem 1.75rem;
  box-shadow: 0 4px 16px rgba(139,92,246,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(139,92,246,0.45);
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.12);
  opacity: 0;
  transition: opacity 0.2s;
}
.btn-primary:hover::after { opacity: 1; }

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  padding: 0.75rem 1.75rem;
  border: 1.5px solid var(--border);
}
.btn-ghost:hover {
  background: var(--bg-3);
  border-color: var(--purple-light);
  color: var(--purple);
  transform: translateY(-2px);
}

.btn-white {
  background: #fff;
  color: var(--purple-dark);
  padding: 0.875rem 2.5rem;
  font-weight: 700;
  box-shadow: 0 4px 24px rgba(0,0,0,0.15);
}
.btn-white:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.2);
}

.btn-lg { padding: 1rem 2.25rem; font-size: 1rem; }
.btn-sm { padding: 0.5rem 1.25rem; font-size: 0.875rem; }

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: all 0.3s ease;
}

.nav.scrolled {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-mark {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1rem;
}

.logo-text {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text);
}

.logo-accent { color: var(--purple); }

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
  margin-left: auto;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-2);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.875rem;
  border-radius: 8px;
  transition: all 0.2s;
}

.nav-links a:hover {
  background: var(--bg-3);
  color: var(--text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.cart-btn {
  position: relative;
  background: var(--bg-3);
  border: none;
  width: 40px; height: 40px;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  transition: all 0.2s;
}

.cart-btn:hover { background: var(--bg-2); color: var(--purple); transform: scale(1.05); }

.cart-count {
  position: absolute;
  top: -4px; right: -4px;
  background: var(--purple);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  width: 18px; height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #fff;
  display: none;
}

.cart-count.visible { display: flex; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 1.5rem 1.5rem;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
  text-decoration: none;
  color: var(--text-2);
  font-weight: 500;
  font-size: 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--bg-3);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 7rem 1.5rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.25;
}

.hero-orb-1 {
  width: 600px; height: 600px;
  top: -100px; right: -100px;
  background: radial-gradient(circle, var(--purple-light), transparent 70%);
  animation: floatOrb 8s ease-in-out infinite;
}

.hero-orb-2 {
  width: 400px; height: 400px;
  bottom: -50px; left: 10%;
  background: radial-gradient(circle, var(--blue-light), transparent 70%);
  animation: floatOrb 6s ease-in-out infinite reverse;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(139,92,246,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139,92,246,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

@keyframes floatOrb {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content { padding-right: 3rem; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(139,92,246,0.08);
  border: 1px solid rgba(139,92,246,0.2);
  border-radius: 100px;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--purple);
  margin-bottom: 1.5rem;
}

.badge-dot {
  width: 7px; height: 7px;
  background: #22c55e;
  border-radius: 50%;
  box-shadow: 0 0 6px #22c55e;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 4px #22c55e; }
  50% { box-shadow: 0 0 10px #22c55e; }
}

.hero-title {
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.title-gradient {
  background: linear-gradient(135deg, var(--purple), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-3);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 2.5rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-3);
}

.trust-sep { color: var(--text-3); opacity: 0.4; }

/* ===== HERO VISUAL ===== */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.product-float {
  position: relative;
  animation: floatProduct 4s ease-in-out infinite;
}

@keyframes floatProduct {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

.acrylic-card {
  width: 380px; height: 280px;
  background: linear-gradient(145deg, rgba(255,255,255,0.9), rgba(248,250,252,0.7));
  border: 1px solid rgba(255,255,255,0.8);
  border-radius: var(--radius-xl);
  box-shadow: 
    0 40px 80px rgba(139,92,246,0.15),
    0 20px 40px rgba(0,0,0,0.08),
    inset 0 1px 0 rgba(255,255,255,0.9);
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
  padding: 1.5rem;
}

.acrylic-shine {
  position: absolute;
  top: -30px; left: -30px; right: 40%;
  height: 60%;
  background: linear-gradient(135deg, rgba(255,255,255,0.6), transparent);
  transform: skewX(-10deg);
  pointer-events: none;
}

.acrylic-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.keyboard-visual {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.kb-row {
  display: flex;
  gap: 3px;
  align-items: center;
}

.kb-key {
  height: 24px;
  min-width: 24px;
  background: linear-gradient(145deg, #f8f9fa, #e9ecef);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 4px;
  box-shadow: 0 2px 0 rgba(0,0,0,0.1), inset 0 1px 0 rgba(255,255,255,0.8);
}

.kb-key.kb-wide { min-width: 40px; }
.kb-key.kb-tab { min-width: 36px; }
.kb-key.kb-caps { min-width: 40px; }
.kb-key.kb-enter { min-width: 36px; }
.kb-key.kb-shift { min-width: 52px; }
.kb-key.kb-rshift { min-width: 48px; }
.kb-key.kb-ctrl { min-width: 30px; }
.kb-key.kb-fn { min-width: 28px; }
.kb-key.kb-space { min-width: 100px; }
.kb-key.kb-alt { min-width: 26px; }
.kb-key.kb-arr { min-width: 22px; }

.acrylic-cover-viz {
  position: absolute;
  inset: 0;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(139,92,246,0.06), rgba(59,130,246,0.04));
  border: 1.5px solid rgba(139,92,246,0.15);
  pointer-events: none;
}

.float-tag {
  position: absolute;
  background: rgba(255,255,255,0.95);
  border: 1px solid rgba(139,92,246,0.15);
  border-radius: 100px;
  padding: 0.4rem 0.875rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  backdrop-filter: blur(10px);
  white-space: nowrap;
}

.float-tag-1 { top: -16px; right: -20px; animation: floatTag1 3s ease-in-out infinite; }
.float-tag-2 { bottom: 20px; left: -30px; animation: floatTag2 3.5s ease-in-out infinite; }
.float-tag-3 { bottom: -16px; right: 10px; animation: floatTag3 4s ease-in-out infinite; }

@keyframes floatTag1 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }
@keyframes floatTag2 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(6px)} }
@keyframes floatTag3 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-4px)} }

/* ===== SCROLL INDICATOR ===== */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text-3);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  grid-column: 1 / -1;
  animation: fadeInUp 1s 1s both;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--purple), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

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

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeInUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }

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

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ===== SECTIONS SHARED ===== */
section { padding: 6rem 0; }

/* ===== PROBLEM & SOLUTION ===== */
.problem-solution { background: var(--bg); }

.problems-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.problem-card {
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: all 0.3s ease;
}

.problem-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(139,92,246,0.15);
}

.problem-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.problem-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.problem-card p { font-size: 0.875rem; color: var(--text-3); line-height: 1.6; }

.solution-bridge {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.bridge-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border), transparent);
}

.bridge-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--purple);
  white-space: nowrap;
}

.solution-card {
  position: relative;
  background: linear-gradient(135deg, rgba(139,92,246,0.04), rgba(59,130,246,0.04));
  border: 1px solid rgba(139,92,246,0.15);
  border-radius: var(--radius-xl);
  padding: 4rem;
  text-align: center;
  overflow: hidden;
}

.solution-glow {
  position: absolute;
  top: -60px; left: 50%; transform: translateX(-50%);
  width: 300px; height: 200px;
  background: radial-gradient(ellipse, rgba(139,92,246,0.15), transparent);
  pointer-events: none;
}

.solution-title { margin-bottom: 1rem; }

.solution-desc {
  max-width: 580px;
  margin: 0 auto 2rem;
  color: var(--text-2);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ===== FEATURES ===== */
.features { background: var(--bg-2); }

.feature-tabs {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.feature-tab {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  background: var(--bg);
  border: 1.5px solid var(--bg-3);
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: 'Inter', sans-serif;
}

.tab-num {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-3);
}

.tab-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-2);
}

.feature-tab.active {
  background: linear-gradient(135deg, var(--purple), var(--blue));
  border-color: transparent;
  box-shadow: var(--shadow-purple);
}

.feature-tab.active .tab-num,
.feature-tab.active .tab-label { color: #fff; }

.feature-tab:hover:not(.active) {
  border-color: var(--purple-light);
  transform: translateY(-2px);
}

.feature-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  animation: panelFade 0.4s ease;
}

.feature-panel.active { display: grid; }

@keyframes panelFade {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Demo visuals */
.mode-demo {
  width: 360px;
  height: 260px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

/* Dust demo */
.dust-demo { background: linear-gradient(135deg, #f8fafc, #f1f5f9); }

.demo-keyboard {
  position: relative;
  background: linear-gradient(145deg, #fff, #f8f9fa);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 10px;
  padding: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.demo-keys { display: flex; flex-direction: column; gap: 3px; }
.demo-key-row { display: flex; gap: 3px; }
.demo-key {
  height: 20px; min-width: 20px;
  background: linear-gradient(145deg, #f1f3f5, #dee2e6);
  border: 1px solid rgba(0,0,0,0.07);
  border-radius: 3px;
  box-shadow: 0 1px 0 rgba(0,0,0,0.12);
}
.demo-key.w2 { min-width: 44px; }
.demo-key.w15 { min-width: 32px; }
.demo-key.w175 { min-width: 38px; }
.demo-key.w4 { min-width: 88px; }

.dust-cover-overlay {
  position: absolute;
  inset: -4px;
  background: linear-gradient(135deg, rgba(139,92,246,0.08) 0%, rgba(59,130,246,0.06) 50%, rgba(255,255,255,0.15) 100%);
  border: 1.5px solid rgba(139,92,246,0.2);
  border-radius: 12px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 8px;
  backdrop-filter: blur(1px);
}

.cover-shine-1 {
  position: absolute;
  top: 0; left: 0; right: 60%;
  height: 40%;
  background: linear-gradient(135deg, rgba(255,255,255,0.4), transparent);
  pointer-events: none;
}

.cover-shine-2 {
  position: absolute;
  bottom: 0; right: 0; left: 60%;
  height: 30%;
  background: linear-gradient(315deg, rgba(255,255,255,0.2), transparent);
  pointer-events: none;
}

.dust-label {
  font-size: 0.6rem;
  font-weight: 700;
  color: rgba(139,92,246,0.7);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(255,255,255,0.9);
  padding: 2px 8px;
  border-radius: 100px;
}

.dust-particles span {
  position: absolute;
  width: 3px; height: 3px;
  background: rgba(139,92,246,0.3);
  border-radius: 50%;
  animation: dustFloat 3s infinite;
}

.dust-particles span:nth-child(1) { top: 15%; left: 10%; animation-delay: 0s; }
.dust-particles span:nth-child(2) { top: 25%; right: 15%; animation-delay: 0.5s; }
.dust-particles span:nth-child(3) { bottom: 20%; left: 20%; animation-delay: 1s; }
.dust-particles span:nth-child(4) { bottom: 30%; right: 25%; animation-delay: 1.5s; }
.dust-particles span:nth-child(5) { top: 50%; left: 5%; animation-delay: 0.8s; }

@keyframes dustFloat {
  0%,100% { transform: translateY(0) rotate(0deg); opacity: 0.4; }
  50% { transform: translateY(-8px) rotate(180deg); opacity: 0.8; }
}

/* Rest demo */
.rest-demo { background: linear-gradient(135deg, #f8fafc, #f0f4f8); }
.demo-desk {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.armrest-piece {
  width: 80px; height: 18px;
  background: linear-gradient(135deg, rgba(139,92,246,0.15), rgba(59,130,246,0.1));
  border: 1.5px solid rgba(139,92,246,0.25);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.armrest-shine {
  position: absolute; top:0; left:0; right:60%; bottom:0;
  background: linear-gradient(135deg, rgba(255,255,255,0.5), transparent);
}

.demo-keyboard-small {
  background: linear-gradient(145deg, #fff, #f8f9fa);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 6px;
  padding: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.demo-keys-small { display: flex; flex-direction: column; gap: 2px; }

.wrist-label-badge {
  position: absolute;
  bottom: 16px; left: 50%; transform: translateX(-50%);
  background: rgba(139,92,246,0.9);
  color: #fff;
  font-size: 0.6rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  white-space: nowrap;
  letter-spacing: 0.05em;
}

/* Stand demo */
.stand-demo { background: linear-gradient(135deg, #f8fafc, #f0f4f8); }

.stand-assembly { position: relative; }

.keyboard-on-stand { display: flex; flex-direction: column; align-items: center; gap: 0; }

.stand-piece {
  width: 200px; height: 20px;
  background: linear-gradient(135deg, rgba(139,92,246,0.18), rgba(59,130,246,0.12));
  border: 1.5px solid rgba(139,92,246,0.3);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.stand-shine {
  position: absolute; top:0; left:0; right:60%; bottom:0;
  background: linear-gradient(135deg, rgba(255,255,255,0.5), transparent);
}

.kb-elevated {
  background: linear-gradient(145deg, #fff, #f8f9fa);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 8px;
  padding: 10px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}

.elevated-keys { display: flex; flex-direction: column; gap: 2px; }

.angle-badge {
  position: absolute;
  top: -24px; right: -20px;
  background: rgba(59,130,246,0.9);
  color: #fff;
  font-size: 0.6rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  white-space: nowrap;
}

/* Panel info */
.panel-num {
  font-size: 4rem;
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  color: rgba(139,92,246,0.12);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.panel-info h3 { font-size: 2rem; margin-bottom: 1rem; }

.panel-info p { color: var(--text-2); line-height: 1.7; margin-bottom: 1.5rem; }

.panel-benefits {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.panel-benefits li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-2);
  font-weight: 500;
}

.panel-benefits li::before {
  content: '✓';
  color: var(--purple);
  font-weight: 700;
}

/* ===== WHY CHOOSE ===== */
.why-choose { background: var(--bg); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.why-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all 0.3s ease;
}

.why-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(139,92,246,0.1);
  border-color: rgba(139,92,246,0.2);
}

.why-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, rgba(139,92,246,0.12), rgba(59,130,246,0.08));
  border: 1px solid rgba(139,92,246,0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--purple);
  margin-bottom: 1.25rem;
}

.why-card h3 { font-size: 1.1rem; margin-bottom: 0.75rem; }
.why-card p { font-size: 0.875rem; color: var(--text-3); line-height: 1.7; }

/* ===== SPECS ===== */
.specs { background: var(--bg-2); }

.specs-layout {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 4rem;
  align-items: start;
}

.specs-table { display: flex; flex-direction: column; }

.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
  gap: 2rem;
}

.spec-row:first-child { border-top: 1px solid var(--border); }

.spec-key {
  font-size: 0.9rem;
  color: var(--text-3);
  font-weight: 500;
  flex-shrink: 0;
}

.spec-val {
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 600;
  text-align: right;
}

.benefits-list h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: var(--text);
}

.benefits-list ul { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }

.benefits-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-2);
  font-weight: 500;
}

.check {
  color: var(--purple);
  font-weight: 700;
  font-size: 1rem;
}

.compat-note {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.compat-note h4 { font-size: 0.9rem; margin-bottom: 0.75rem; color: var(--text-2); font-weight: 600; }

.compat-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.compat-tags span {
  background: rgba(139,92,246,0.08);
  border: 1px solid rgba(139,92,246,0.15);
  border-radius: 100px;
  padding: 0.3rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--purple);
}

/* ===== COMING SOON ===== */
.coming-soon { background: var(--bg); }

.coming-desc {
  color: var(--text-3);
  max-width: 500px;
  margin-bottom: 3rem;
  font-size: 1rem;
}

.sizes-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 1rem;
  align-items: start;
}

.size-card {
  background: var(--bg-2);
  border: 1.5px solid var(--bg-3);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s;
}

.size-card.active {
  border-color: rgba(139,92,246,0.3);
  background: linear-gradient(135deg, rgba(139,92,246,0.04), rgba(59,130,246,0.02));
}

.size-badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 0.75rem;
}

.size-card.active .size-badge { color: var(--purple); }

.size-label {
  font-family: 'Syne', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 1rem;
}

.size-keys { display: flex; flex-direction: column; gap: 3px; align-items: center; }
.size-key-row { display: flex; gap: 2px; }
.sk { width: 12px; height: 12px; background: linear-gradient(145deg, #e9ecef, #dee2e6); border-radius: 2px; }

.size-soon-label {
  font-size: 0.75rem;
  color: var(--text-3);
  font-weight: 500;
}

.size-card.coming { opacity: 0.65; }
.size-card.coming:hover { opacity: 0.85; transform: translateY(-2px); }

/* ===== TESTIMONIALS ===== */
.testimonials { background: var(--bg-2); }

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

.review-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all 0.3s;
}

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

.review-stars { color: #f59e0b; font-size: 1rem; margin-bottom: 1rem; }

.review-text {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.author-avatar {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}

.author-name { font-size: 0.9rem; font-weight: 600; color: var(--text); display: block; }
.author-sub { font-size: 0.75rem; color: var(--text-3); }

/* ===== FAQ ===== */
.faq { background: var(--bg); }

.faq-list { max-width: 720px; }

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-q {
  width: 100%;
  background: none;
  border: none;
  padding: 1.25rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  gap: 1rem;
  transition: color 0.2s;
}

.faq-q:hover { color: var(--purple); }

.faq-arrow {
  flex-shrink: 0;
  transition: transform 0.3s ease;
  color: var(--text-3);
}

.faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--purple); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s;
}

.faq-a p {
  padding-bottom: 1.25rem;
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.7;
}

.faq-item.open .faq-a { max-height: 200px; }

/* ===== FINAL CTA ===== */
.final-cta { background: var(--bg); padding: 4rem 0 6rem; }

.cta-card {
  background: linear-gradient(135deg, #7C3AED 0%, #5B21B6 40%, #1D4ED8 100%);
  border-radius: var(--radius-xl);
  padding: 5rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  top: -80px; left: 50%; transform: translateX(-50%);
  width: 400px; height: 300px;
  background: radial-gradient(ellipse, rgba(255,255,255,0.15), transparent);
  pointer-events: none;
}

.cta-title {
  color: #fff;
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.cta-sub { color: rgba(255,255,255,0.75); font-size: 1.05rem; margin-bottom: 2.5rem; }

/* ===== FOOTER ===== */
.footer {
  background: var(--text);
  color: rgba(255,255,255,0.8);
  padding: 3rem 0 2rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 2rem;
}

.footer-brand .nav-logo { margin-bottom: 1rem; }
.footer-brand .logo-text { color: #fff; }
.footer-brand p { font-size: 0.875rem; color: rgba(255,255,255,0.55); line-height: 1.7; }

.footer-links-col h4 { font-size: 0.85rem; font-weight: 700; color: #fff; margin-bottom: 1rem; letter-spacing: 0.05em; }
.footer-links-col a { display: block; color: rgba(255,255,255,0.55); text-decoration: none; font-size: 0.875rem; margin-bottom: 0.5rem; transition: color 0.2s; }
.footer-links-col a:hover { color: var(--purple-light); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}

.footer-bottom a { color: rgba(255,255,255,0.4); text-decoration: none; }
.footer-bottom a:hover { color: var(--purple-light); }

/* ===== CART DRAWER ===== */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  backdrop-filter: blur(4px);
  transition: opacity 0.3s;
}

.cart-overlay.open { opacity: 1; pointer-events: all; }

.cart-drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: 380px;
  background: var(--bg);
  z-index: 201;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  box-shadow: -8px 0 40px rgba(0,0,0,0.12);
}

.cart-drawer.open { transform: translateX(0); }

.cart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.cart-header h3 { font-size: 1.1rem; color: var(--text); }

.cart-close {
  background: var(--bg-3);
  border: none;
  width: 36px; height: 36px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  transition: all 0.2s;
}

.cart-close:hover { background: var(--bg-2); color: var(--text); }

.cart-items { flex: 1; overflow-y: auto; padding: 1.5rem; }

.cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 200px;
  gap: 1rem;
  color: var(--text-3);
}

.cart-empty p { font-size: 0.9rem; font-weight: 500; }

.cart-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border);
}

.cart-total {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 1rem;
}

.cart-item-row {
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.cart-item-info { flex: 1; }
.cart-item-name { font-size: 0.9rem; font-weight: 600; color: var(--text); margin-bottom: 0.25rem; }
.cart-item-price { font-size: 0.85rem; color: var(--purple); font-weight: 600; }

.cart-item-qty {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.qty-btn {
  width: 28px; height: 28px;
  background: var(--bg-3);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.qty-btn:hover { background: var(--purple); color: #fff; }
.qty-num { font-weight: 700; font-size: 0.9rem; min-width: 20px; text-align: center; }