/* =====================================================
   NEURÉLUX — Premium Brain Wellness Device
   Korea Lighting Inc. | CSS Design System
   ===================================================== */

/* ─── CSS Variables ─── */
:root {
  --navy:         #0d1b3e;
  --navy-mid:     #132048;
  --navy-light:   #1a2d5a;
  --navy-lighter: #1e3566;
  --sky:          #4fc3f7;
  --sky-dark:     #29b6f6;
  --sky-glow:     rgba(79, 195, 247, 0.15);
  --sky-border:   rgba(79, 195, 247, 0.25);
  --white:        #ffffff;
  --gray-50:      #f8fafc;
  --gray-100:     #f1f5f9;
  --gray-200:     #e2e8f0;
  --gray-400:     #94a3b8;
  --gray-600:     #475569;
  --gray-800:     #1e293b;
  --text-primary: #0f172a;
  --text-muted:   #64748b;
  --font-main:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --radius-sm:    8px;
  --radius-md:    14px;
  --radius-lg:    20px;
  --radius-xl:    28px;
  --shadow-sm:    0 2px 8px rgba(0,0,0,.06);
  --shadow-md:    0 8px 24px rgba(0,0,0,.10);
  --shadow-lg:    0 20px 48px rgba(0,0,0,.14);
  --shadow-glow:  0 0 32px rgba(79, 195, 247, 0.20);
  --transition:   0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-main);
  color: var(--text-primary);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Section Variants ─── */
.section-light  { background: var(--white); }
.section-gray   { background: var(--gray-50); }
.section-dark   { background: var(--navy); position: relative; overflow: hidden; }

/* ─── Scroll-reveal ─── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}
.navbar.scrolled {
  background: rgba(13, 27, 62, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 24px rgba(0,0,0,.3);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar.scrolled .nav-container { padding: 14px 24px; }

.nav-logo {
  display: flex;
  align-items: center;
  line-height: 1;
}
.nav-logo .accent { color: var(--sky); }

/* ─── Logo Image Styles ─── */
.logo-img {
  display: block;
  object-fit: contain;
  -webkit-user-drag: none;
  user-select: none;
}

/* Navbar logo — white version, compact */
.logo-img-nav {
  height: 32px;
  width: auto;
  max-width: 160px;
  /* PNG has transparent background: works on dark navbar */
  filter: brightness(1);
  transition: opacity var(--transition);
}
.nav-logo:hover .logo-img-nav { opacity: 0.85; }

/* Hero logo — large white version */
.logo-img-hero {
  height: clamp(60px, 10vw, 100px);
  width: auto;
  max-width: 520px;
  display: block;
  /* White version on dark hero bg */
  filter: brightness(1.05);
  animation: heroLogoFadeIn 0.9s ease both;
}
@keyframes heroLogoFadeIn {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Footer logo — white version, medium */
.logo-img-footer {
  height: 44px;
  width: auto;
  max-width: 220px;
  margin-bottom: 4px;
  filter: brightness(1);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  color: rgba(255,255,255,0.8);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--white); background: rgba(255,255,255,0.08); }
.nav-links a.nav-cta {
  color: var(--navy);
  background: var(--sky);
  padding: 8px 18px;
  border-radius: 50px;
  font-weight: 600;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.nav-links a.nav-cta:hover {
  background: #81d4fa;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(79,195,247,0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ═══════════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #060e22 0%, var(--navy) 40%, #0f2850 70%, #071428 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  display: flex;
  align-items: center;
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: orbFloat 8s ease-in-out infinite;
}
.hero-orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(79,195,247,0.12) 0%, transparent 70%);
  top: -100px; right: -100px;
  animation-delay: 0s;
}
.hero-orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(41,182,246,0.08) 0%, transparent 70%);
  bottom: 0; left: -80px;
  animation-delay: -3s;
}
.hero-orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(129,212,250,0.06) 0%, transparent 70%);
  top: 50%; left: 40%;
  animation-delay: -5s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(20px, -20px) scale(1.05); }
  66% { transform: translate(-10px, 15px) scale(0.97); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 620px;
  flex: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(79,195,247,0.12);
  border: 1px solid rgba(79,195,247,0.3);
  color: var(--sky);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 8px 16px;
  border-radius: 50px;
  margin-bottom: 28px;
}
.badge-dot {
  width: 7px; height: 7px;
  background: var(--sky);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  /* h1 태그를 이미지 래퍼로 사용 — line-height/font 제거 */
  line-height: 1;
  margin-bottom: 20px;
  display: flex;
  align-items: flex-start;
}
.hero-accent { color: var(--sky); }

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  line-height: 1.5;
  margin-bottom: 18px;
  letter-spacing: 0.01em;
}

.hero-desc {
  font-size: 1rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
  margin-bottom: 36px;
}

.desktop-br { display: inline; }

.hero-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-wavelengths {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.wl-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.7);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 50px;
  letter-spacing: 0.04em;
}
.wl-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  display: block;
}
.wl-810  { background: #f97316; box-shadow: 0 0 8px rgba(249,115,22,0.6); }
.wl-1064 { background: #dc2626; box-shadow: 0 0 8px rgba(220,38,38,0.5); }
.wl-sep { color: rgba(255,255,255,0.3); font-size: 1.1rem; font-weight: 300; }

/* Hero Visual */
/* ─── Hero Product Carousel ─── */
.hero-visual {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 520px;
  height: 720px;
  display: flex;
  align-items: stretch;
  z-index: 3; /* hero-content(z-index:2)보다 높게 — 버튼 클릭 보장 */
}

.hero-carousel {
  position: relative;
  width: 100%;
  height: 100%;          /* ← 필수: 부모 높이를 채워야 stage가 flex:1 동작 */
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Image stage: fills available height above dots */
.hero-carousel-stage {
  position: relative;   /* 버튼이 이 요소를 기준으로 절대 위치 */
  width: 100%;
  flex: 1;
  min-height: 0;
}

.hero-carousel-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.65s ease;
  pointer-events: none; /* 항상 none — 버튼 클릭 방해 안 함 */
  /* mix-blend-mode 제거 — 어두운 배경에서 이미지 전환이 보이지 않는 문제 수정 */
}
.hero-carousel-img.active {
  opacity: 1;
  /* pointer-events 는 none 유지 — 버튼이 클릭돼야 하므로 */
}

/* Prev / Next arrow buttons — stage 안에 있고 z-index로 이미지 위에 표시 */
.hero-carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.22);
  background: rgba(10,20,55,0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  padding: 0;
}
.hero-carousel-btn:hover {
  background: rgba(79,195,247,0.28);
  border-color: rgba(79,195,247,0.65);
  transform: translateY(-50%) scale(1.1);
}
.hero-carousel-btn svg { width: 20px; height: 20px; }

.hero-carousel-prev { left: 14px; }
.hero-carousel-next { right: 14px; }

/* Dot indicators */
.hero-carousel-dots {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  padding-bottom: 4px;
}
.hero-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.28);
  cursor: pointer;
  padding: 0;
  transition: background 0.3s ease, transform 0.3s ease, width 0.3s ease;
  flex-shrink: 0;
}
.hero-dot.active {
  background: var(--sky);
  width: 20px;
  border-radius: 4px;
  transform: none;
}

.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.4);
  animation: scrollBounce 2s ease-in-out infinite;
}
.hero-scroll svg { width: 28px; height: 28px; }
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ═══════════════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn-primary {
  background: var(--sky);
  color: var(--navy);
}
.btn-primary:hover {
  background: #81d4fa;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79,195,247,0.4);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.35);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.6);
  transform: translateY(-2px);
}

.btn-product {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--navy);
  background: var(--sky);
  border: none;
  transition: all var(--transition);
  width: 100%;
  justify-content: center;
}
.btn-product svg { width: 16px; height: 16px; }
.btn-product:hover {
  background: #81d4fa;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79,195,247,0.35);
}

.btn-flagship {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--white);
  background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
  border: none;
  transition: all var(--transition);
  width: 100%;
  justify-content: center;
}
.btn-flagship svg { width: 16px; height: 16px; }
.btn-flagship:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(29,78,216,0.4);
  background: linear-gradient(135deg, #1e40af, #2563eb);
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 18px 40px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  background: var(--sky);
  transition: all var(--transition);
}
.btn-cta svg { width: 20px; height: 20px; }
.btn-cta:hover {
  background: #81d4fa;
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(79,195,247,0.45);
}

/* ═══════════════════════════════════════════════════
   SECTION HEADERS
═══════════════════════════════════════════════════ */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header-light { text-align: center; margin-bottom: 56px; }

.section-tag {
  display: inline-block;
  background: rgba(79,195,247,0.1);
  border: 1px solid rgba(79,195,247,0.25);
  color: #0284c7;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
}
.section-tag-light {
  background: rgba(79,195,247,0.15);
  border-color: rgba(79,195,247,0.35);
  color: var(--sky);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 12px;
}
.title-light { color: var(--white); }

.section-sub {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.6;
}
.sub-light { color: rgba(255,255,255,0.6); }

/* ═══════════════════════════════════════════════════
   PILOT BANNER
═══════════════════════════════════════════════════ */
.pilot-banner {
  background: linear-gradient(135deg, #0a1628 0%, var(--navy) 50%, #0f2547 100%);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.pilot-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234fc3f7' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.pilot-header {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: center;
  margin-bottom: 44px;
  flex-wrap: wrap;
}
.pilot-badge {
  display: inline-block;
  background: var(--sky);
  color: var(--navy);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: 6px;
}
.pilot-title {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 600;
  color: var(--white);
  text-align: center;
}

.pilot-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  max-width: 700px;
  margin: 0 auto 32px;
}
.stat-card {
  flex: 1;
  text-align: center;
  padding: 36px 32px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(79,195,247,0.2);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), background var(--transition);
}
.stat-card:hover {
  transform: translateY(-4px);
  background: rgba(79,195,247,0.07);
}
.stat-icon { font-size: 2rem; margin-bottom: 12px; }
.stat-value {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--sky);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.03em;
}
.stat-unit {
  font-size: 1.5rem;
  font-weight: 600;
  color: rgba(79,195,247,0.7);
}
.stat-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 4px;
}
.stat-sub {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
  font-weight: 400;
}
.stat-divider {
  width: 1px;
  height: 120px;
  background: linear-gradient(to bottom, transparent, rgba(79,195,247,0.3), transparent);
  flex-shrink: 0;
  margin: 0 8px;
}
.pilot-disclaimer {
  text-align: center;
  color: rgba(255,255,255,0.4);
  font-size: 0.8rem;
  font-style: italic;
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════════
   HOW IT WORKS
═══════════════════════════════════════════════════ */
.how-it-works { padding: 96px 0; }

.steps-grid {
  display: flex;
  align-items: stretch;
  gap: 0;
}
.step-card {
  flex: 1;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  transition: all var(--transition);
  cursor: default;
}
.step-card:hover {
  border-color: var(--sky);
  box-shadow: 0 12px 40px rgba(79,195,247,0.12);
  transform: translateY(-6px);
}
.step-icon-wrap {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, rgba(79,195,247,0.1), rgba(79,195,247,0.05));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.8rem;
  border: 1px solid rgba(79,195,247,0.15);
  transition: transform var(--transition);
}
.step-card:hover .step-icon-wrap { transform: scale(1.1); }

.step-num {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--sky-dark);
  letter-spacing: 0.15em;
  margin-bottom: 10px;
  opacity: 0.7;
}
.step-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.step-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}
.step-tag {
  display: inline-block;
  background: rgba(79,195,247,0.08);
  color: #0284c7;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 50px;
  letter-spacing: 0.04em;
}

.step-connector {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding: 0 8px;
  opacity: 0.5;
}
.step-connector svg { width: 40px; height: 24px; }

/* ═══════════════════════════════════════════════════
   DUAL WAVELENGTH
═══════════════════════════════════════════════════ */
.wavelength { padding: 96px 0; }

.wl-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  max-width: 900px;
  margin: 0 auto 28px;
}

.wl-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 36px;
  border: 2px solid var(--gray-200);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.wl-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.wl-card-810:hover { border-color: rgba(249,115,22,0.4); }
.wl-card-1064:hover { border-color: rgba(220,38,38,0.3); }

.wl-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.wl-number {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}
.wl-number span { font-size: 1rem; font-weight: 600; color: var(--text-muted); }

.wl-spectrum {
  width: 60px; height: 28px;
  border-radius: 6px;
}
.spec-810  { background: linear-gradient(90deg, #f97316, #ea580c); box-shadow: 0 0 12px rgba(249,115,22,0.4); }
.spec-1064 { background: linear-gradient(90deg, #dc2626, #991b1b); box-shadow: 0 0 12px rgba(220,38,38,0.35); }

.wl-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.wl-card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}
.wl-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.wl-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--gray-600);
  font-weight: 500;
}
.wl-features li svg {
  width: 16px; height: 16px;
  flex-shrink: 0;
  stroke: #16a34a;
}

.wl-plus-badge {
  display: flex;
  align-items: center;
  justify-content: center;
}
.wl-plus-circle {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sky), var(--sky-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
  box-shadow: 0 4px 16px rgba(79,195,247,0.4);
  flex-shrink: 0;
}

.wl-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  max-width: 700px;
  margin: 0 auto;
  padding: 14px 20px;
  background: rgba(79,195,247,0.06);
  border: 1px solid rgba(79,195,247,0.15);
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.5;
}
.wl-note svg { width: 16px; height: 16px; flex-shrink: 0; stroke: var(--sky-dark); margin-top: 1px; }

/* ═══════════════════════════════════════════════════
   HS FRAME™ TECHNOLOGY — Full Redesign
═══════════════════════════════════════════════════ */
.technology { padding: 96px 0; }

.tech-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.tech-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,195,247,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,195,247,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* ── KPI Bar ── */
.tech-kpi-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(79,195,247,0.15);
  border-radius: var(--radius-lg);
  padding: 28px 0;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.tech-kpi {
  flex: 1;
  min-width: 120px;
  text-align: center;
  padding: 0 20px;
}
.tech-kpi-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--sky);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 6px;
}
.tech-kpi-value span {
  font-size: 1.1rem;
  font-weight: 600;
  color: rgba(79,195,247,0.65);
}
.tech-kpi-label {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.55);
  font-weight: 500;
  letter-spacing: 0.02em;
}
.tech-kpi-divider {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, rgba(79,195,247,0.25), transparent);
  flex-shrink: 0;
}

/* ── Comparison Wrapper ── */
.tech-compare-wrapper {
  display: grid;
  grid-template-columns: 1fr 72px 1fr;
  gap: 0;
  margin-bottom: 40px;
  align-items: start;
}

/* ── Panel shared ── */
.tech-panel {
  border-radius: var(--radius-xl);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.tech-panel-conventional {
  background: rgba(239,68,68,0.05);
  border: 1px solid rgba(239,68,68,0.2);
}
.tech-panel-hsframe {
  background: rgba(79,195,247,0.05);
  border: 1px solid rgba(79,195,247,0.2);
}

.tech-panel-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.tech-panel-label svg { width: 16px; height: 16px; flex-shrink: 0; }
.tech-panel-label-bad  { color: #f87171; }
.tech-panel-label-good { color: var(--sky); }

.tech-panel-subtitle {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
  font-weight: 400;
  margin-top: -14px;
  padding-left: 24px;
}

/* ── Heat path bars ── */
.heat-path {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.heat-path-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: 6px;
  background: var(--clr, #888);
  width: var(--w, 100%);
  margin-left: auto;
  margin-right: auto;
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(255,255,255,0.92);
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  transition: transform var(--transition);
}
.heat-path-bar:hover { transform: scaleX(1.01); }
.heat-bar-icon { font-size: 0.9rem; }

.heat-path-arrow {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 14px;
  position: relative;
}
.heat-arrow-line {
  flex: 1;
  height: 1px;
  background: rgba(239,68,68,0.3);
  position: relative;
}
.heat-arrow-line::after {
  content: '';
  position: absolute;
  right: -1px;
  top: -4px;
  border: 4px solid transparent;
  border-left-color: rgba(239,68,68,0.4);
}
.heat-arrow-label {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.4);
  white-space: nowrap;
}
.heat-arrow-bad .heat-arrow-label { color: rgba(248,113,113,0.6); }

/* ── Bottleneck funnel ── */
.bottleneck-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px;
  background: rgba(239,68,68,0.06);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(239,68,68,0.2);
}
.bottleneck-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: #f87171;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.bottleneck-funnel {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  gap: 4px;
}
.funnel-wide, .funnel-narrow {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.4);
  text-align: center;
}
.funnel-neck svg {
  width: 80px;
  height: 60px;
  display: block;
  margin: 0 auto;
}

/* ── Result badge ── */
.tech-result-badge {
  border-radius: var(--radius-md);
  padding: 18px 20px;
  text-align: center;
}
.tech-result-bad {
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.25);
}
.tech-result-good {
  background: rgba(79,195,247,0.1);
  border: 1px solid rgba(79,195,247,0.3);
}
.result-badge-num {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 4px;
  letter-spacing: -0.03em;
}
.tech-result-bad  .result-badge-num { color: #f87171; }
.tech-result-good .result-badge-num { color: var(--sky); }
.result-badge-num span {
  font-size: 1rem;
  font-weight: 600;
  opacity: 0.7;
}
.result-badge-text {
  font-size: 0.78rem;
  font-weight: 600;
}
.tech-result-bad  .result-badge-text { color: rgba(248,113,113,0.7); }
.tech-result-good .result-badge-text { color: rgba(79,195,247,0.75); }

/* ── Problem list ── */
.tech-problem-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.tech-problem-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.5;
}
.tech-problem-list li svg {
  width: 14px; height: 14px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ── Chip photo ── */
.tech-chip-photo {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  position: relative;
}
.tech-chip-img {
  width: 100%;
  height: auto;
  aspect-ratio: 797 / 343; /* 원본 이미지 비율 */
  object-fit: cover;
  display: block;
  filter: brightness(0.85) saturate(1.1);
  transition: filter var(--transition), transform var(--transition);
}
.tech-chip-photo:hover .tech-chip-img {
  filter: brightness(1) saturate(1.2);
  transform: scale(1.02);
}
.chip-photo-caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  padding: 18px 12px 8px;
  font-size: 0.7rem;
  color: rgba(255,255,255,0.65);
  font-style: italic;
}

/* ── Center vs badge ── */
.tech-compare-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 60px;
  gap: 8px;
}
.vs-badge {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, #dc2626, #ef4444, #f97316);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: 0 0 24px rgba(239,68,68,0.4), 0 0 48px rgba(239,68,68,0.2);
  animation: vsPulse 3s ease-in-out infinite;
  flex-shrink: 0;
}
.vs-badge span {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1;
  letter-spacing: -0.03em;
}
.vs-badge small {
  font-size: 0.48rem;
  color: rgba(255,255,255,0.85);
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.2;
  display: block;
  padding: 0 4px;
  text-align: center;
}
@keyframes vsPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 24px rgba(239,68,68,0.4); }
  50% { transform: scale(1.06); box-shadow: 0 0 36px rgba(239,68,68,0.6); }
}
.compare-arrow-down {
  flex: 1;
  display: flex;
  align-items: stretch;
  padding: 4px 0;
}
.compare-arrow-down svg { width: 24px; flex: 1; }

/* ── Direct path (HS FRAME side) ── */
.heat-path-direct { gap: 12px; }
.direct-path-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: rgba(79,195,247,0.7);
  font-weight: 500;
}
.direct-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--sky);
  box-shadow: 0 0 8px rgba(79,195,247,0.6);
  flex-shrink: 0;
}
.direct-path-visual {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: rgba(79,195,247,0.04);
  border: 1px solid rgba(79,195,247,0.15);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.direct-layer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  font-size: 0.82rem;
  font-weight: 600;
}
.direct-layer-top {
  background: rgba(79,195,247,0.12);
  color: rgba(255,255,255,0.9);
  border-bottom: 1px solid rgba(79,195,247,0.1);
}
.direct-layer-bot {
  background: rgba(79,195,247,0.08);
  color: rgba(255,255,255,0.8);
}
.direct-layer svg { width: 20px; height: 20px; flex-shrink: 0; }
.direct-arrow {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
}
.direct-arrow-line {
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, var(--sky), rgba(79,195,247,0.3));
  border-radius: 2px;
  position: relative;
}
.direct-arrow-line::after {
  content: '';
  position: absolute;
  right: -1px;
  top: -4px;
  border: 5px solid transparent;
  border-left-color: var(--sky);
}
.direct-arrow span {
  font-size: 0.68rem;
  color: rgba(79,195,247,0.55);
  white-space: nowrap;
}

/* ── Smooth flow animation ── */
.smooth-flow-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px;
  background: rgba(79,195,247,0.04);
  border: 1px solid rgba(79,195,247,0.12);
  border-radius: var(--radius-md);
}
.smooth-flow-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--sky);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.smooth-flow-bars {
  display: flex;
  gap: 4px;
  align-items: flex-end;
  height: 32px;
}
.smooth-bar {
  flex: 1;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(to top, var(--sky-dark), rgba(79,195,247,0.4));
  animation: smoothFlow 1.8s ease-in-out infinite var(--delay, 0s);
}
@keyframes smoothFlow {
  0%, 100% { height: 40%; opacity: 0.5; }
  50% { height: 100%; opacity: 1; }
}
.smooth-flow-sublabel {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.35);
}

/* ── HS FRAME features grid ── */
.hsframe-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.hsframe-feat {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: rgba(79,195,247,0.06);
  border: 1px solid rgba(79,195,247,0.12);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.8);
  font-weight: 500;
  transition: background var(--transition), border-color var(--transition);
}
.hsframe-feat:hover {
  background: rgba(79,195,247,0.12);
  border-color: rgba(79,195,247,0.25);
}
.hsframe-feat svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ── Credential row ── */
.tech-credential-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.tech-credential {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 20px 22px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(79,195,247,0.12);
  border-radius: var(--radius-md);
  transition: background var(--transition), border-color var(--transition);
}
.tech-credential:hover {
  background: rgba(79,195,247,0.06);
  border-color: rgba(79,195,247,0.25);
}
.credential-icon { font-size: 1.6rem; flex-shrink: 0; }
.credential-body { display: flex; flex-direction: column; gap: 4px; }
.credential-body strong {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--white);
}
.credential-body span {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.5;
}

.tech-note {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.3);
  font-style: italic;
  text-align: center;
  line-height: 1.6;
  max-width: 780px;
  margin: 0 auto;
}


}

/* ═══════════════════════════════════════════════════
   PRODUCT LINEUP
═══════════════════════════════════════════════════ */
/* ─── Lineup wrapper ─── */
.lineup { padding: 96px 0; }

/* ─── Product Showcase: full-width two-column strip ─── */
.product-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-bottom: 64px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  background: var(--white);
  transition: box-shadow var(--transition);
}
.product-showcase:last-of-type { margin-bottom: 28px; }
.product-showcase:hover { box-shadow: var(--shadow-lg); }

/* Flagship strip gets a subtle gradient border */
.product-showcase-flagship {
  border-color: rgba(29,78,216,0.18);
  background: linear-gradient(135deg, #fff 60%, rgba(29,78,216,0.02) 100%);
}

/* ─── Gallery (photo side) ─── */
.product-gallery {
  background: #f3f4f6;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  padding: 20px 20px 16px;
  position: relative;
  overflow: hidden;
  min-height: 460px;
}
.product-gallery::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(79,195,247,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.product-showcase-flagship .product-gallery::before {
  background: radial-gradient(ellipse at 50% 40%, rgba(29,78,216,0.07) 0%, transparent 70%);
}

.product-gallery-main {
  position: relative;
  width: 100%;
  min-height: 0;
  flex: 1 1 0%;  /* flex-basis 명시 */
  height: 0;     /* 절대 위치 자식(inset:0)이 높이를 올바르게 상속하도록 */
}
/* Stand Pro shares same fill behaviour */
.product-gallery-right .product-gallery-main {
  width: 100%;
}

.product-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.45s ease;
  pointer-events: none;
}
.product-photo.active {
  opacity: 1;
  pointer-events: auto;
}

/* Thumbnail strip */
.product-gallery-thumbs {
  display: flex;
  gap: 10px;
  margin-top: 20px;
  justify-content: center;
}
.thumb-btn {
  width: 52px; height: 52px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--gray-200);
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition);
  background: var(--white);
  padding: 3px;
  flex-shrink: 0;
}
.thumb-btn img {
  width: 100%; height: 100%;
  object-fit: contain;
  border-radius: 4px;
}
.thumb-btn:hover { border-color: var(--sky); transform: translateY(-2px); }
.thumb-btn.active { border-color: var(--sky-dark); box-shadow: 0 0 0 3px rgba(79,195,247,0.2); }
.product-showcase-flagship .thumb-btn.active {
  border-color: #1d4ed8;
  box-shadow: 0 0 0 3px rgba(29,78,216,0.15);
}

/* ─── Info (text side) ─── */
.product-info {
  padding: 48px 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.product-info-right { padding: 48px 44px; }

.product-series-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--sky-dark);
  margin-bottom: 10px;
  opacity: 0.7;
}
.product-series-tag-dark { color: #3b82f6; }

.product-name {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 6px;
  line-height: 1.15;
}
.product-tagline {
  font-size: 0.9rem;
  color: var(--sky-dark);
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.product-tagline-flagship { color: #2563eb; }

.product-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 380px;
}

/* Flagship badge — inline (not absolute) */
.flagship-badge-inline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 10px;
  width: fit-content;
  box-shadow: 0 4px 12px rgba(29,78,216,0.25);
}
.flagship-badge-inline svg { width: 11px; height: 11px; fill: #fbbf24; }

/* Specs table */
.product-specs {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 22px;
  border-top: 1px solid var(--gray-100);
  padding-top: 20px;
}
.product-specs li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  padding: 4px 0;
}
.spec-label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-weight: 500;
}
.spec-label svg {
  width: 14px; height: 14px;
  flex-shrink: 0;
  opacity: 0.5;
}
.spec-val {
  font-weight: 600;
  color: var(--text-primary);
  text-align: right;
}
.spec-highlight {
  color: var(--sky-dark);
  background: rgba(79,195,247,0.08);
  padding: 2px 10px;
  border-radius: 50px;
  font-size: 0.82rem;
}
.highlight-val {
  color: #1d4ed8;
  background: rgba(29,78,216,0.08);
  padding: 2px 10px;
  border-radius: 50px;
  font-size: 0.8rem;
}

/* Coverage bar */
.product-coverage { margin-bottom: 28px; }
.coverage-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.coverage-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.coverage-pct {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--sky-dark);
}
.coverage-pct-flagship { color: #2563eb; }
.coverage-bar {
  height: 6px;
  background: var(--gray-100);
  border-radius: 6px;
  margin-bottom: 6px;
  overflow: hidden;
}
.coverage-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--sky), var(--sky-dark));
  border-radius: 6px;
  transition: width 1.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.coverage-fill-flagship {
  background: linear-gradient(90deg, #1d4ed8, #60a5fa);
}
.coverage-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
}

.lineup-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 8px;
}

/* ═══════════════════════════════════════════════════
   RESEARCH TIMELINE
═══════════════════════════════════════════════════ */
.research { padding: 96px 0; }

.timeline {
  display: flex;
  align-items: stretch;
  gap: 0;
  max-width: 1000px;
  margin: 0 auto;
}

.timeline-card {
  flex: 1;
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  border: 2px solid var(--gray-200);
  transition: all var(--transition);
  position: relative;
}
.timeline-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }

.timeline-done  { border-top: 3px solid #16a34a; }
.timeline-progress { border-top: 3px solid var(--sky-dark); }
.timeline-planned  { border-top: 3px solid var(--gray-400); }

.timeline-done:hover  { border-color: #16a34a; box-shadow: 0 12px 32px rgba(22,163,74,0.1); }
.timeline-progress:hover { border-color: var(--sky); box-shadow: 0 12px 32px rgba(79,195,247,0.12); }
.timeline-planned:hover  { border-color: var(--gray-400); }

.timeline-icon { font-size: 2rem; margin-bottom: 14px; }
.timeline-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  gap: 8px;
  flex-wrap: wrap;
}
.timeline-status {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 50px;
}
.status-done     { background: rgba(22,163,74,0.1); color: #16a34a; }
.status-progress { background: rgba(79,195,247,0.12); color: #0284c7; }
.status-planned  { background: rgba(148,163,184,0.15); color: var(--gray-600); }
.timeline-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}
.timeline-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.3;
}
.timeline-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}
.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.t-tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 50px;
  background: var(--gray-100);
  color: var(--gray-600);
  letter-spacing: 0.03em;
}

.timeline-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  position: relative;
  min-height: 80px;
  flex-shrink: 0;
}
.connector-line {
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--sky-dark), var(--gray-200));
  position: relative;
}
.connector-line::after {
  content: '';
  position: absolute;
  right: -6px;
  top: -4px;
  border: 5px solid transparent;
  border-left-color: var(--sky-dark);
}
.connector-dot {
  display: none;
}

/* ═══════════════════════════════════════════════════
   FAQ
═══════════════════════════════════════════════════ */
.faq { padding: 96px 0; }

.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item.active { border-color: rgba(79,195,247,0.35); box-shadow: 0 4px 20px rgba(79,195,247,0.08); }

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  text-align: left;
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  transition: background var(--transition), color var(--transition);
}
.faq-q:hover { background: rgba(79,195,247,0.04); }
.faq-item.active .faq-q { color: #0284c7; }

.faq-arrow {
  flex-shrink: 0;
  width: 28px; height: 28px;
  background: var(--gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), background var(--transition);
}
.faq-arrow svg { width: 14px; height: 14px; stroke: var(--text-muted); }
.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  background: rgba(79,195,247,0.15);
}
.faq-item.active .faq-arrow svg { stroke: var(--sky-dark); }

.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s ease;
}
.faq-item.active .faq-a { grid-template-rows: 1fr; }
.faq-a-inner {
  overflow: hidden;
  padding: 0 24px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.75;
}
.faq-item.active .faq-a-inner { padding-bottom: 20px; }
.faq-a-inner strong { color: var(--text-primary); font-weight: 600; }

/* ═══════════════════════════════════════════════════
   CTA SECTION
═══════════════════════════════════════════════════ */
.cta-section { padding: 96px 0; text-align: center; }

.cta-bg { position: absolute; inset: 0; pointer-events: none; }
.cta-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
}
.cta-orb-1 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(79,195,247,0.15) 0%, transparent 70%);
  top: -100px; left: -100px;
}
.cta-orb-2 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(79,195,247,0.1) 0%, transparent 70%);
  bottom: -80px; right: -80px;
}

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

.cta-badge {
  display: inline-block;
  background: rgba(79,195,247,0.15);
  border: 1px solid rgba(79,195,247,0.3);
  color: var(--sky);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 20px;
}
.cta-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.cta-sub {
  font-size: 1rem;
  color: rgba(255,255,255,0.6);
  max-width: 480px;
  margin: 0 auto 36px;
  line-height: 1.6;
}
.cta-bullets {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  margin-top: 28px;
}
.cta-bullet {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.65);
  font-weight: 500;
}
.cta-bullet svg { width: 16px; height: 16px; stroke: #4ade80; flex-shrink: 0; }

/* ═══════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════ */
.footer {
  background: #060e22;
  padding: 56px 0 32px;
  border-top: 1px solid rgba(79,195,247,0.1);
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-logo {
  /* now contains <img> — remove text styles */
  display: flex;
  align-items: flex-start;
  margin-bottom: 4px;
}
.footer-logo .accent { color: var(--sky); }
.footer-company {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  font-weight: 500;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}
.footer-desc {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.65;
  max-width: 320px;
}
.footer-links h4,
.footer-tech h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}
.footer-links ul,
.footer-tech ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  font-weight: 500;
  transition: color var(--transition);
}
.footer-links a svg { width: 14px; height: 14px; flex-shrink: 0; }
.footer-links a:hover { color: var(--sky); }
.footer-tech li {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.5;
}
.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  text-align: center;
}
.footer-copy {
  font-size: 0.825rem;
  color: rgba(255,255,255,0.35);
  font-weight: 500;
}
.footer-legal {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.25);
  max-width: 640px;
  line-height: 1.55;
  font-style: italic;
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE — TABLET (≤ 1024px)
═══════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero-visual { display: none; }
  /* Tech — tablet */
  .tech-compare-wrapper { grid-template-columns: 1fr 56px 1fr; }
  .tech-kpi-bar { gap: 0; }
  .tech-kpi { padding: 0 12px; min-width: 100px; }
  .tech-kpi-value { font-size: 1.6rem; }
  .tech-credential-row { grid-template-columns: 1fr; gap: 12px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE — MOBILE (≤ 768px)
═══════════════════════════════════════════════════ */
@media (max-width: 768px) {
  /* Nav */
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(6, 14, 34, 0.98);
    backdrop-filter: blur(24px);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 80px 32px 32px;
    gap: 8px;
    transition: right var(--transition);
    box-shadow: -8px 0 40px rgba(0,0,0,0.4);
  }
  .nav-links.open { right: 0; }
  .nav-links a { font-size: 1rem; padding: 12px 16px; width: 100%; }
  .nav-links a.nav-cta { width: 100%; text-align: center; justify-content: center; margin-top: 8px; }

  /* Hero */
  .hero { padding: 100px 24px 80px; }
  /* hero-title is now an img wrapper — font-size not needed */
  .logo-img-hero { height: clamp(44px, 9vw, 72px); }
  .desktop-br { display: none; }
  .hero-ctas { gap: 10px; }
  .hero-ctas .btn { flex: 1; justify-content: center; font-size: 0.875rem; }

  /* Steps */
  .steps-grid { flex-direction: column; gap: 16px; }
  .step-connector { transform: rotate(90deg); margin: 0 auto; }

  /* Pilot */
  .pilot-stats { flex-direction: column; gap: 16px; }
  .stat-divider { width: 80%; height: 1px; margin: 0 auto; background: linear-gradient(to right, transparent, rgba(79,195,247,0.3), transparent); }

  /* Wavelength */
  .wl-grid { grid-template-columns: 1fr; gap: 16px; }
  .wl-plus-badge { transform: rotate(90deg); }

  /* Tech — mobile */
  .tech-kpi-bar { flex-wrap: wrap; gap: 12px 0; padding: 20px 12px; }
  .tech-kpi { min-width: 50%; padding: 8px 16px; }
  .tech-kpi-divider { display: none; }
  .tech-compare-wrapper {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .tech-compare-center {
    flex-direction: row;
    justify-content: center;
    padding-top: 0;
    gap: 16px;
  }
  .compare-arrow-down { display: none; }
  .vs-badge { width: 72px; height: 72px; }
  .hsframe-features { grid-template-columns: 1fr; }
  .tech-credential-row { grid-template-columns: 1fr; }

  /* Lineup — stack gallery above info on mobile */
  .product-showcase {
    grid-template-columns: 1fr;
  }
  /* Stand Pro: reverse order so image comes first too */
  .product-showcase-flagship .product-info-right {
    order: -1;
  }
  .product-gallery {
    min-height: 300px;
    padding: 16px 16px 12px;
  }
  .product-gallery-main { width: 100%; min-height: 0; }
  .product-gallery-right .product-gallery-main { width: 100%; }
  .product-info,
  .product-info-right { padding: 32px 28px; }

  /* Timeline */
  .timeline { flex-direction: column; gap: 16px; }
  .timeline-connector { transform: rotate(90deg); }

  /* Footer */
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-brand { grid-column: auto; }

  /* Misc */
  section { scroll-margin-top: 64px; }
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE — SMALL MOBILE (≤ 480px)
═══════════════════════════════════════════════════ */
@media (max-width: 480px) {
  .tech-kpi { min-width: 45%; }
  .tech-panel { padding: 20px 16px; }
  .hero-wavelengths { gap: 8px; }
  .cta-bullets { gap: 16px; flex-direction: column; }
  .pilot-header { flex-direction: column; }
}

/* ═══════════════════════════════════════════════════
   UTILITY
═══════════════════════════════════════════════════ */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #060e22; }
::-webkit-scrollbar-thumb { background: rgba(79,195,247,0.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(79,195,247,0.5); }