/* ═══════════════════════════════════════════════════
   SONY WH-CH520 — DEEP DARK THEME
   Palette: Volcanic Glass + Acid Neon accent
   Fonts: Syne (display) + Outfit (body)
═══════════════════════════════════════════════════ */

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

:root {
  --bg-0:       #080808;
  --bg-1:       #0f0f0f;
  --bg-2:       #141414;
  --bg-3:       #1a1a1a;
  --bg-4:       #222222;
  --border:     rgba(255,255,255,0.07);
  --border-md:  rgba(255,255,255,0.12);
  --text-1:     #f0f0f0;
  --text-2:     #a0a0a0;
  --text-3:     #606060;
  --accent:     #e8ff00;
  --accent-dim: rgba(232,255,0,0.12);
  --accent-glow:rgba(232,255,0,0.25);
  --pink:       #ff6eb4;
  --pink-dim:   rgba(255,110,180,0.15);
  --cyan:       #00d4ff;
  --cyan-dim:   rgba(0,212,255,0.12);
  --white:      #ffffff;
  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-xl:  40px;
  --shadow-card: 0 8px 40px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 60px rgba(232,255,0,0.15);
  --transition: 0.35s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

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

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

/* ── PAGE SYSTEM ── */
.page { display: none; min-height: 100vh; }
.page.active { display: block; animation: pageFadeIn 0.5s ease forwards; }

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ══════════════════════════════════════════════════
   NAVBAR
══════════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 40px;
  height: 72px;
  display: flex;
  align-items: center;
  background: rgba(8,8,8,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(8,8,8,0.97);
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}
.nav-inner {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-sony {
  font-family: 'Syne', sans-serif;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--white);
}
.logo-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
  margin-left: auto;
}
.nav-link {
  font-family: 'Outfit', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  letter-spacing: 0.5px;
}
.nav-link:hover, .nav-link.active {
  color: var(--white);
  background: rgba(255,255,255,0.06);
}
.nav-link.active { color: var(--accent); }
.nav-cta {
  font-family: 'Outfit', sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--bg-0);
  background: var(--accent);
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  flex-shrink: 0;
}
.nav-cta:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-1);
  border-radius: 2px;
  transition: var(--transition);
}

/* ══════════════════════════════════════════════════
   BUTTONS
══════════════════════════════════════════════════ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Outfit', sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--bg-0);
  background: var(--accent);
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.btn-primary:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  font-family: 'Outfit', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-1);
  background: transparent;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-md);
  transition: var(--transition);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}
.btn-prod {
  font-family: 'Outfit', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(232,255,0,0.2);
  transition: var(--transition);
}
.btn-prod:hover {
  background: var(--accent);
  color: var(--bg-0);
  transform: translateY(-1px);
}

/* ══════════════════════════════════════════════════
   PAGE 1 — HERO
══════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 72px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg-img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.25) saturate(0.6);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(8,8,8,0.95) 0%,
    rgba(8,8,8,0.7) 50%,
    rgba(8,8,8,0.4) 100%
  );
}
.hero-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(232,255,0,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,255,0,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  padding: 80px 40px 80px 80px;
  animation: heroSlideIn 0.8s ease forwards;
}
@keyframes heroSlideIn {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(232,255,0,0.2);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
}
.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}
.hero-title {
  font-family: 'Syne', sans-serif;
  line-height: 1.05;
  margin-bottom: 24px;
}
.title-line {
  display: block;
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -2px;
}
.title-line.accent { color: var(--accent); }
.title-line.thin {
  font-size: clamp(20px, 2.5vw, 32px);
  font-weight: 400;
  color: var(--text-2);
  letter-spacing: 0;
}
.hero-desc {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: 'Syne', sans-serif;
  font-size: 28px;
  font-weight: 800;
  color: var(--white);
}
.stat-unit { font-size: 16px; color: var(--accent); }
.stat-label {
  display: block;
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-top: 2px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-md);
}

/* Hero Product Showcase */
.hero-product-showcase {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding-right: 60px;
  animation: heroImgIn 1s ease 0.3s both;
}
@keyframes heroImgIn {
  from { opacity: 0; transform: translateY(-40%) scale(0.95); }
  to   { opacity: 1; transform: translateY(-50%) scale(1); }
}
.showcase-glow {
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,255,0,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.product-img-wrap {
  position: relative;
  width: 420px;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-hero-img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.5s ease, transform 0.5s ease;
  transform: scale(0.95);
  filter: drop-shadow(0 20px 60px rgba(0,0,0,0.8));
}
.product-hero-img.active {
  opacity: 1;
  transform: scale(1);
}
.color-switcher {
  display: flex;
  gap: 12px;
  z-index: 3;
}
.color-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 2px solid transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  background: var(--bg-3);
}
.color-btn.active { border-color: var(--accent); }
.color-swatch {
  width: 24px; height: 24px;
  border-radius: 50%;
}
.color-swatch.black { background: #1a1a1a; border: 1px solid #444; }
.color-swatch.pink  { background: #ff6eb4; }
.product-color-label {
  font-size: 13px;
  color: var(--text-2);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 80px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-3);
}
.scroll-line {
  width: 40px; height: 1px;
  background: var(--text-3);
  animation: scrollPulse 2s infinite;
}
@keyframes scrollPulse {
  0%, 100% { width: 40px; opacity: 0.5; }
  50%       { width: 60px; opacity: 1; }
}

/* ── FEATURES STRIP ── */
.features-strip {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 32px 40px;
}
.features-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.feature-item:hover { background: var(--bg-3); }
.feature-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-dim);
  border: 1px solid rgba(232,255,0,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}
.feature-icon svg { width: 20px; height: 20px; }
.feature-text h4 {
  font-family: 'Syne', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 2px;
}
.feature-text p { font-size: 12px; color: var(--text-3); }

/* ── PRODUCT DETAIL ── */
.product-detail {
  padding: 120px 40px;
  background: var(--bg-1);
}
.pd-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.pd-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.pd-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 24px;
}
.accent-text { color: var(--accent); }
.pd-desc {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 36px;
}
.pd-specs {
  list-style: none;
  margin-bottom: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.pd-specs li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.pd-specs li:last-child { border-bottom: none; }
.pd-specs li:hover { background: var(--bg-3); }
.spec-label { font-size: 13px; color: var(--text-3); }
.spec-val { font-size: 13px; font-weight: 600; color: var(--text-1); }
.pd-price-row {
  display: flex;
  align-items: center;
  gap: 24px;
}
.pd-price {
  font-family: 'Syne', sans-serif;
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
}
.pd-img-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-3);
  border: 1px solid var(--border);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pd-img-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(232,255,0,0.08) 0%, transparent 70%);
}
.pd-img {
  width: 85%;
  height: 85%;
  object-fit: contain;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.7));
  position: relative;
  z-index: 1;
}
.pd-img-badge {
  position: absolute;
  top: 24px;
  right: 24px;
  background: var(--accent);
  color: var(--bg-0);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  text-align: center;
  z-index: 2;
}
.pd-img-badge span {
  display: block;
  font-family: 'Syne', sans-serif;
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
}
.pd-img-badge small {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ── COLOR SHOWCASE ── */
.color-showcase {
  padding: 100px 40px;
  background: var(--bg-0);
}
.cs-container { max-width: 1200px; margin: 0 auto; }
.cs-header {
  text-align: center;
  margin-bottom: 60px;
}
.cs-header h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
}
.cs-header p { font-size: 16px; color: var(--text-2); }
.cs-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.cs-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-2);
  padding: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  transition: var(--transition);
}
.cs-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-md);
  box-shadow: var(--shadow-card);
}
.cs-card-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: var(--transition);
}
.cs-card:hover .cs-card-glow { opacity: 1; }
.black-glow { background: radial-gradient(circle at 50% 30%, rgba(100,100,100,0.15) 0%, transparent 60%); }
.pink-glow  { background: radial-gradient(circle at 50% 30%, rgba(255,110,180,0.15) 0%, transparent 60%); }
.cs-img {
  width: 260px;
  height: 260px;
  object-fit: contain;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.6));
  position: relative;
  z-index: 1;
}
.cs-info { text-align: center; position: relative; z-index: 1; }
.cs-info h3 {
  font-family: 'Syne', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.cs-info p { font-size: 14px; color: var(--text-2); margin-bottom: 16px; }
.cs-price {
  font-family: 'Syne', sans-serif;
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
}
.pink-card .cs-price { color: var(--pink); }

/* ── TESTIMONIALS ── */
.testimonials {
  padding: 100px 40px;
  background: var(--bg-1);
}
.test-container { max-width: 1200px; margin: 0 auto; }
.test-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  color: var(--white);
  text-align: center;
  margin-bottom: 60px;
}
.test-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.test-card {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}
.test-card:hover {
  border-color: var(--border-md);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}
.featured-test {
  background: var(--bg-4);
  border-color: rgba(232,255,0,0.2);
  box-shadow: 0 0 40px rgba(232,255,0,0.05);
}
.test-stars {
  font-size: 16px;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: 2px;
}
.test-card p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}
.test-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.test-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid rgba(232,255,0,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}
.test-author strong {
  display: block;
  font-size: 14px;
  color: var(--text-1);
}
.test-author small {
  font-size: 11px;
  color: var(--text-3);
}

/* ══════════════════════════════════════════════════
   PAGE 2 — ABOUT
══════════════════════════════════════════════════ */
.about-hero {
  position: relative;
  height: 70vh;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.about-hero-bg { position: absolute; inset: 0; }
.about-hero-img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.2) saturate(0.5);
}
.about-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(8,8,8,0.3) 0%, rgba(8,8,8,0.8) 100%);
}
.about-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 40px;
  margin-top: 72px;
}
.about-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(232,255,0,0.3);
  padding: 6px 20px;
  border-radius: 100px;
  margin-bottom: 24px;
}
.about-hero-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(40px, 6vw, 80px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 20px;
}
.about-hero-content p {
  font-size: 18px;
  color: var(--text-2);
  max-width: 600px;
  margin: 0 auto;
}

/* ── SONY LOGO SECTION ── */
.sony-logo-section {
  padding: 100px 40px;
  background: var(--bg-1);
}
.sls-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 80px;
  align-items: start;
}
.sls-logo-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.sls-logo-glow {
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,255,0,0.1) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.sls-logo-box {
  width: 280px; height: 140px;
  background: var(--bg-3);
  border: 1px solid var(--border-md);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 60px rgba(232,255,0,0.08);
}
.sony-svg-logo { width: 180px; }
.sls-tagline {
  font-family: 'Syne', sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--text-3);
  position: relative;
  z-index: 1;
}
.sls-content h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
}
.sls-lead {
  font-size: 17px;
  color: var(--text-1);
  line-height: 1.7;
  margin-bottom: 20px;
}
.sls-content p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 40px;
}
.sls-numbers {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}
.sls-num { display: flex; flex-direction: column; gap: 4px; }
.num-big {
  font-family: 'Syne', sans-serif;
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.num-label {
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ── TIMELINE ── */
.timeline-section {
  padding: 100px 40px;
  background: var(--bg-0);
}
.tl-container { max-width: 900px; margin: 0 auto; }
.tl-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  color: var(--white);
  text-align: center;
  margin-bottom: 70px;
}
.timeline {
  position: relative;
  padding: 0 20px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--border-md) 10%, var(--border-md) 90%, transparent);
  transform: translateX(-50%);
}
.tl-item {
  position: relative;
  width: 50%;
  padding-bottom: 48px;
}
.tl-item.left  { padding-right: 60px; text-align: right; }
.tl-item.right { padding-left: 60px; margin-left: 50%; }
.tl-dot {
  position: absolute;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
  top: 6px;
}
.tl-item.left  .tl-dot { right: -7px; }
.tl-item.right .tl-dot { left: -7px; }
.tl-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}
.tl-card:hover {
  border-color: rgba(232,255,0,0.2);
  background: var(--bg-3);
}
.tl-year {
  font-family: 'Syne', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  display: block;
  margin-bottom: 8px;
}
.tl-card h4 {
  font-family: 'Syne', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.tl-card p { font-size: 13px; color: var(--text-2); line-height: 1.6; }

/* ── MISSION ── */
.mission-section {
  padding: 100px 40px;
  background: var(--bg-1);
}
.ms-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.ms-img {
  width: 100%;
  border-radius: var(--radius-xl);
  object-fit: cover;
  aspect-ratio: 4/3;
  filter: brightness(0.8) saturate(0.7);
  border: 1px solid var(--border);
}
.ms-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.ms-right h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
}
.ms-right p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 20px;
}
.ms-quote {
  border-left: 3px solid var(--accent);
  padding: 16px 24px;
  background: var(--bg-3);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  font-size: 15px;
  color: var(--text-1);
  line-height: 1.6;
  margin-top: 32px;
}
.ms-quote cite {
  display: block;
  font-size: 12px;
  color: var(--accent);
  font-style: normal;
  font-weight: 600;
  margin-top: 10px;
  letter-spacing: 1px;
}

/* ══════════════════════════════════════════════════
   PAGE 3 — PRODUCTS
══════════════════════════════════════════════════ */
.products-hero {
  position: relative;
  height: 60vh;
  min-height: 440px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.ph-bg { position: absolute; inset: 0; }
.ph-bg-img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.15) saturate(0.4);
}
.ph-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(8,8,8,0.2) 0%, rgba(8,8,8,0.85) 100%);
}
.ph-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 40px;
  margin-top: 72px;
}
.ph-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(232,255,0,0.3);
  padding: 6px 20px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.ph-content h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(36px, 5vw, 68px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 16px;
}
.ph-content p {
  font-size: 17px;
  color: var(--text-2);
  max-width: 560px;
  margin: 0 auto;
}

/* ── FEATURED PRODUCT ── */
.featured-product-section {
  padding: 100px 40px;
  background: var(--bg-1);
}
.fps-container { max-width: 1200px; margin: 0 auto; }
.fps-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
  display: block;
}
.fps-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 60px;
  position: relative;
  overflow: hidden;
}
.fps-card::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,255,0,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.fps-img-side {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.fps-glow {
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,255,0,0.1) 0%, transparent 70%);
}
.fps-img {
  width: 100%;
  max-width: 380px;
  object-fit: contain;
  filter: drop-shadow(0 20px 50px rgba(0,0,0,0.7));
  position: relative;
  z-index: 1;
}
.fps-series {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}
.fps-info h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 8px;
}
.fps-tagline {
  font-size: 14px;
  color: var(--text-3);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.fps-desc {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 28px;
}
.fps-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}
.fps-feat {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-2);
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 100px;
}
.feat-icon { font-size: 14px; }
.fps-colors {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 28px;
}
.fps-color-dot {
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 2px solid var(--border-md);
}
.fps-black { background: #1a1a1a; }
.fps-pink  { background: var(--pink); border-color: rgba(255,110,180,0.4); }
.fps-price-row {
  display: flex;
  align-items: center;
  gap: 24px;
}
.fps-price {
  font-family: 'Syne', sans-serif;
  font-size: 40px;
  font-weight: 800;
  color: var(--accent);
}

/* ── PRODUCTS GRID ── */
.products-grid-section {
  padding: 100px 40px;
  background: var(--bg-0);
}
.pgs-container { max-width: 1200px; margin: 0 auto; }
.pgs-header {
  text-align: center;
  margin-bottom: 60px;
}
.pgs-header h2 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
}
.pgs-header p { font-size: 16px; color: var(--text-2); }
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.prod-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.prod-card:hover {
  border-color: var(--border-md);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}
.featured-prod-card {
  border-color: rgba(232,255,0,0.2);
  box-shadow: 0 0 40px rgba(232,255,0,0.05);
}
.prod-img-wrap {
  position: relative;
  background: var(--bg-3);
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.prod-glow {
  position: absolute;
  width: 200px; height: 200px;
  border-radius: 50%;
  opacity: 0.6;
}
.ult-glow  { background: radial-gradient(circle, rgba(0,212,255,0.15) 0%, transparent 70%); }
.zx-glow   { background: radial-gradient(circle, rgba(150,150,150,0.15) 0%, transparent 70%); }
.xm6-glow  { background: radial-gradient(circle, rgba(232,255,0,0.15) 0%, transparent 70%); }
.xm5-glow  { background: radial-gradient(circle, rgba(255,110,180,0.12) 0%, transparent 70%); }
.prod-img {
  width: 200px;
  height: 200px;
  object-fit: contain;
  filter: drop-shadow(0 10px 30px rgba(0,0,0,0.6));
  position: relative;
  z-index: 1;
  transition: transform 0.4s ease;
}
.prod-card:hover .prod-img { transform: scale(1.05); }
.prod-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--bg-0);
  background: var(--accent);
  padding: 5px 12px;
  border-radius: 100px;
  z-index: 2;
}
.wired-badge { background: var(--text-2); color: var(--bg-0); }
.premium-badge { background: linear-gradient(135deg, var(--accent), #fff700); }
.prod-info { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.prod-series {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}
.prod-info h3 {
  font-family: 'Syne', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 12px;
}
.prod-info p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}
.prod-specs-mini {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.prod-specs-mini span {
  font-size: 12px;
  color: var(--text-2);
  background: var(--bg-4);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 100px;
}
.prod-price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}
.prod-price {
  font-family: 'Syne', sans-serif;
  font-size: 24px;
  font-weight: 800;
  color: var(--accent);
}

/* ── COMPARISON TABLE ── */
.comparison-section {
  padding: 100px 40px;
  background: var(--bg-1);
}
.cmp-container { max-width: 1100px; margin: 0 auto; }
.cmp-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  color: var(--white);
  text-align: center;
  margin-bottom: 48px;
}
.cmp-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.cmp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.cmp-table thead tr {
  background: var(--bg-3);
  border-bottom: 1px solid var(--border-md);
}
.cmp-table th {
  padding: 18px 24px;
  text-align: left;
  font-family: 'Syne', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-2);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.cmp-table th:first-child { color: var(--text-3); }
.cmp-table td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  color: var(--text-2);
}
.cmp-table tr:last-child td { border-bottom: none; }
.cmp-table tr:hover td { background: var(--bg-3); }
.cmp-table td:first-child {
  font-weight: 600;
  color: var(--text-1);
}
.highlight-col {
  background: rgba(232,255,0,0.04) !important;
  color: var(--accent) !important;
  font-weight: 600;
}
.cmp-table thead .highlight-col {
  color: var(--accent) !important;
  border-bottom: 2px solid var(--accent);
}

/* ══════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════ */
.footer {
  background: var(--bg-0);
  border-top: 1px solid var(--border);
  padding: 80px 40px 0;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 60px;
}
.footer-brand .logo-sony {
  font-family: 'Syne', sans-serif;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--white);
  display: block;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.6;
  max-width: 280px;
}
.footer-links h5 {
  font-family: 'Syne', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 20px;
}
.footer-links a {
  display: block;
  font-size: 14px;
  color: var(--text-3);
  margin-bottom: 12px;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-bottom p { font-size: 13px; color: var(--text-3); }

/* ══════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero-product-showcase { width: 45%; padding-right: 30px; }
  .product-img-wrap { width: 340px; height: 340px; }
  .pd-container, .ms-container { grid-template-columns: 1fr; gap: 48px; }
  .sls-container { grid-template-columns: 1fr; gap: 48px; }
  .fps-card { grid-template-columns: 1fr; gap: 40px; padding: 40px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .navbar { padding: 0 20px; }
  .nav-links { display: none; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: rgba(8,8,8,0.98); padding: 20px; border-bottom: 1px solid var(--border); gap: 4px; }
  .nav-links.open { display: flex; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }
  .hero { flex-direction: column; min-height: 100vh; }
  .hero-content { padding: 100px 24px 40px; max-width: 100%; }
  .hero-product-showcase { position: relative; width: 100%; transform: none; top: auto; padding: 0 24px 60px; }
  .product-img-wrap { width: 280px; height: 280px; }
  .features-inner { grid-template-columns: 1fr 1fr; }
  .cs-cards { grid-template-columns: 1fr; }
  .test-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 20px; }
  .tl-item { width: 100%; padding-left: 60px !important; padding-right: 0 !important; text-align: left !important; margin-left: 0 !important; }
  .tl-item .tl-dot { left: 13px !important; right: auto !important; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero-scroll-hint { left: 24px; }
  .hero-stats { gap: 16px; }
}

@media (max-width: 480px) {
  .features-inner { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
  .footer-inner { grid-template-columns: 1fr; }
  .fps-card { padding: 24px; }
  .sls-numbers { gap: 24px; }
}