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

:root {
  --bg:          #ffffff;
  --bg2:         #f0f5ff;
  --bg3:         #e2eaff;
  --accent:      #2563eb;
  --accent2:     #1d4ed8;
  --teal:        #0284c7;
  --hematoxylin: #7c3aed;
  --indigo:      #6366f1;
  --text:        #0f172a;
  --text2:       #334155;
  --text3:       #64748b;
  --border:      rgba(37,99,235,0.10);
  --border2:     rgba(37,99,235,0.20);
  --shadow:      0 1px 3px rgba(15,23,42,0.07), 0 4px 12px rgba(15,23,42,0.05);
  --shadow-lg:   0 4px 24px rgba(15,23,42,0.10), 0 12px 40px rgba(37,99,235,0.06);
  --radius:      6px;
  --radius-lg:   10px;
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; }
h1,h2,h3,h4 { line-height: 1.2; }

/* ── Scroll reveal ────────────────────────────────────────── */
.reveal, .reveal-left, .reveal-right {
  opacity: 0;
  transition: opacity 0.7s cubic-bezier(0.25,0.46,0.45,0.94),
              transform 0.7s cubic-bezier(0.25,0.46,0.45,0.94);
}
.reveal       { transform: translateY(28px); }
.reveal-left  { transform: translateX(-30px); }
.reveal-right { transform: translateX(30px); }
.reveal.visible, .reveal-left.visible, .reveal-right.visible {
  opacity: 1; transform: translate(0,0);
}
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

/* ── Gradient text ────────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--teal) 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}

/* ── Background layers ────────────────────────────────────── */
.hero-bg {
  position: fixed; inset: 0; z-index: -4; pointer-events: none;
  background: linear-gradient(-45deg, #ffffff, #eff6ff, #dbeafe, #f0f9ff, #f5f3ff);
  background-size: 400% 400%;
  animation: gradientShift 14s ease infinite;
}
@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.grid-overlay {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image: radial-gradient(circle, rgba(37,99,235,0.07) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.45) 0%, rgba(0,0,0,0.08) 55%, transparent 90%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.45) 0%, rgba(0,0,0,0.08) 55%, transparent 90%);
}
#bgCanvas {
  position: fixed; inset: 0; z-index: -3; pointer-events: none; display: block;
}

/* ── Orbs ─────────────────────────────────────────────────── */
.orb { position: fixed; border-radius: 50%; pointer-events: none; z-index: -1; filter: blur(80px); will-change: transform; }
.orb-1 { width: 600px; height: 600px; background: radial-gradient(circle, rgba(37,99,235,0.07) 0%, transparent 70%); top: -180px; right: -160px; }
.orb-2 { width: 480px; height: 480px; background: radial-gradient(circle, rgba(2,132,199,0.06) 0%, transparent 70%); bottom: -140px; left: -100px; }
.orb-3 { width: 400px; height: 400px; background: radial-gradient(circle, rgba(124,58,237,0.05) 0%, transparent 70%); top: 38vh; right: 5vw; }
.orb-4 { width: 300px; height: 300px; background: radial-gradient(circle, rgba(2,132,199,0.04) 0%, transparent 70%); top: 55vh; left: 8vw; }

/* ── Mouse glow ───────────────────────────────────────────── */
.mouse-glow {
  position: fixed; width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.05) 0%, transparent 60%);
  pointer-events: none; z-index: 0;
  transform: translate(-50%,-50%); mix-blend-mode: multiply;
}

/* ── Nav ──────────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem; height: 60px;
  background: rgba(255,255,255,0.92);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.nav.scrolled { border-color: var(--border); box-shadow: 0 1px 14px rgba(15,23,42,0.07); }
.nav-logo { font-weight: 700; font-size: 17px; letter-spacing: -0.02em; color: var(--text); text-decoration: none; }
.logo-accent { color: var(--accent); }
.logo-dot    { color: var(--teal); }
.logo-ai     { font-size: 0.62em; color: var(--teal); font-family: 'JetBrains Mono', monospace; font-weight: 500; vertical-align: super; }
.nav-links { display: flex; align-items: center; gap: 0.15rem; }
.nav-links a {
  font-size: 13.5px; color: var(--text2); padding: 0.4rem 0.7rem; border-radius: var(--radius);
  transition: color 0.15s, background 0.15s; text-decoration: none; font-weight: 450;
}
.nav-links a:hover { color: var(--accent); background: rgba(37,99,235,0.05); text-decoration: none; }
.nav-links a:first-child { font-weight: 600; color: var(--accent); }
.nav-signin { color: var(--text2) !important; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: var(--accent); color: #fff; border: none;
  padding: 0.58rem 1.2rem; border-radius: var(--radius); font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all 0.18s; text-decoration: none; letter-spacing: 0.01em;
  box-shadow: 0 2px 10px rgba(37,99,235,0.22);
}
.btn-primary:hover { background: var(--accent2); box-shadow: 0 4px 18px rgba(37,99,235,0.32); transform: translateY(-1px); text-decoration: none; color: #fff; }
.btn-primary.btn-lg { padding: 0.72rem 1.55rem; font-size: 15px; }
.btn-primary.btn-sm { padding: 0.38rem 0.85rem; font-size: 13px; }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: transparent; color: var(--accent);
  border: 1px solid rgba(37,99,235,0.28); padding: 0.58rem 1.2rem;
  border-radius: var(--radius); font-size: 14px; font-weight: 500;
  cursor: pointer; transition: all 0.18s; text-decoration: none;
}
.btn-ghost:hover { background: rgba(37,99,235,0.05); border-color: var(--accent); text-decoration: none; color: var(--accent); }
.btn-ghost.btn-lg { padding: 0.72rem 1.55rem; font-size: 15px; }
.btn-text { background: none; border: none; color: var(--text3); font-size: 14px; cursor: pointer; padding: 0.6rem 0; text-decoration: none; transition: color 0.15s; }
.btn-text:hover { color: var(--accent); text-decoration: none; }

/* ── Section utilities ────────────────────────────────────── */
.section-wrap { max-width: 1100px; margin: 0 auto; padding: 5rem 2rem; }
.section-tag {
  display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent);
  border: 1px solid rgba(37,99,235,0.18); background: rgba(37,99,235,0.05);
  padding: 3px 10px; border-radius: 99px; margin-bottom: 1rem;
}
.section-tag-hema  { color: var(--hematoxylin); border-color: rgba(124,58,237,0.2);  background: rgba(124,58,237,0.05); }
.section-tag-eosin { color: var(--teal);          border-color: rgba(2,132,199,0.2);   background: rgba(2,132,199,0.05); }
.section-tag-teal  { color: var(--teal);          border-color: rgba(2,132,199,0.2);   background: rgba(2,132,199,0.05); }
.section-wrap h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; letter-spacing: -0.02em; margin-bottom: 1rem; }
.section-sub { font-size: 15px; color: var(--text2); max-width: 600px; line-height: 1.7; margin-bottom: 2.5rem; }

/* ── Section backgrounds ──────────────────────────────────── */
.section-alt   { background: var(--bg2); }
.section-hema  { background: rgba(245,243,255,0.65); }
.section-eosin { background: rgba(240,249,255,0.55); }
.section-light { background: var(--bg2); }

/* ── Section dividers ─────────────────────────────────────── */
.section-divider       { display: block; height: 1px; border: none; background: linear-gradient(90deg, transparent, rgba(37,99,235,0.16), transparent); }
.section-divider-hema  { background: linear-gradient(90deg, transparent, rgba(124,58,237,0.16), transparent); }
.section-divider-eosin { background: linear-gradient(90deg, transparent, rgba(2,132,199,0.14), transparent); }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  min-height: 100vh; padding: 120px 2rem 80px;
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; gap: 4rem;
}
.hero-content { flex: 1; min-width: 0; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem; font-size: 12px; font-weight: 500;
  color: var(--accent); border: 1px solid rgba(37,99,235,0.2); background: rgba(37,99,235,0.05);
  padding: 5px 12px; border-radius: 99px; margin-bottom: 1.5rem;
}
.badge-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
  animation: pulse 2.2s ease infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.45; transform: scale(0.65); }
}
.hero h1 { font-size: clamp(2rem, 4.5vw, 3.4rem); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 1.25rem; color: var(--text); }
.hero-sub { font-size: 16px; color: var(--text2); max-width: 480px; line-height: 1.75; margin-bottom: 2rem; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 2rem; }

/* ── Zoom slider ──────────────────────────────────────────── */
.zoom-slider-wrap {
  display: flex; align-items: center; gap: 0.75rem; margin-bottom: 2.5rem;
  padding: 0.55rem 1rem; background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); max-width: 280px; box-shadow: var(--shadow);
}
.zoom-label { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text3); flex-shrink: 0; }
.zoom-slider { flex: 1; -webkit-appearance: none; appearance: none; height: 3px; background: var(--bg3); border-radius: 99px; outline: none; }
.zoom-slider::-webkit-slider-thumb { -webkit-appearance: none; width: 14px; height: 14px; border-radius: 50%; background: var(--accent); cursor: pointer; box-shadow: 0 0 0 3px rgba(37,99,235,0.14); }
.zoom-val { font-size: 12px; font-family: 'JetBrains Mono', monospace; font-weight: 600; color: var(--accent); min-width: 28px; text-align: right; }

/* ── Hero stats ───────────────────────────────────────────── */
.hero-stats {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 0;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg); overflow: hidden; max-width: 420px;
  box-shadow: var(--shadow);
}
.stat { padding: 0.85rem 1rem; display: flex; flex-direction: column; align-items: center; border-right: 1px solid var(--border); }
.stat:last-child { border-right: none; }
.stat-num { font-size: 15px; font-weight: 700; color: var(--accent); font-family: 'JetBrains Mono', monospace; line-height: 1; margin-bottom: 3px; }
.stat-lbl { font-size: 9px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text3); }

/* ── Hero visual (browser mockup) ────────────────────────── */
.hero-visual { flex: 1; max-width: 560px; }
.viewer-mockup {
  background: #1e293b; border-radius: 12px;
  box-shadow: 0 28px 80px rgba(15,23,42,0.18), 0 6px 20px rgba(37,99,235,0.08);
  overflow: hidden; border: 1px solid rgba(255,255,255,0.08);
}
.mockup-bar { background: #0f172a; padding: 0.65rem 0.9rem; display: flex; align-items: center; gap: 0.75rem; }
.mockup-dots { display: flex; gap: 6px; }
.mockup-dots span { width: 10px; height: 10px; border-radius: 50%; background: #1e293b; }
.mockup-dots span:nth-child(1) { background: #ef4444; }
.mockup-dots span:nth-child(2) { background: #f59e0b; }
.mockup-dots span:nth-child(3) { background: #10b981; }
.mockup-url {
  flex: 1; background: rgba(255,255,255,0.06); border-radius: 4px;
  padding: 3px 10px; font-size: 11px; color: rgba(255,255,255,0.35);
  font-family: 'JetBrains Mono', monospace; display: flex; align-items: center; gap: 0.4rem;
}
.mockup-controls { display: flex; gap: 8px; font-size: 12px; color: rgba(255,255,255,0.28); }
.mockup-app { display: flex; height: 320px; }

/* ── Mockup sidebar ───────────────────────────────────────── */
.mockup-sidebar { width: 140px; flex-shrink: 0; background: #0f1629; border-right: 1px solid rgba(255,255,255,0.06); padding: 0.85rem; overflow: hidden; }
.mock-section-label { font-size: 9px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.28); margin-bottom: 0.5rem; margin-top: 0.6rem; }
.mock-mags { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; margin-bottom: 0.6rem; }
.mag-btn {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.38); border-radius: 3px; padding: 4px 0; font-size: 10px;
  cursor: pointer; text-align: center; transition: all 0.15s; font-weight: 500;
  font-family: 'JetBrains Mono', monospace;
}
.mag-btn:hover  { border-color: rgba(37,99,235,0.5); color: rgba(255,255,255,0.7); }
.mag-btn.active { background: rgba(37,99,235,0.35); color: #fff; border-color: rgba(37,99,235,0.6); font-weight: 600; }
.mock-divider   { height: 1px; background: rgba(255,255,255,0.07); margin: 0.5rem 0; }
.mock-info { display: flex; justify-content: space-between; font-size: 9.5px; padding: 2px 0; }
.mock-info span:first-child { color: rgba(255,255,255,0.3); }
.mock-info span:last-child  { color: rgba(255,255,255,0.6); font-family: 'JetBrains Mono', monospace; }
.mock-thumb { height: 42px; background: rgba(255,255,255,0.04); border-radius: 3px; border: 1px solid rgba(255,255,255,0.07); margin-top: 0.5rem; position: relative; overflow: hidden; }

/* ── Mockup canvas (H&E tissue) ───────────────────────────── */
.mockup-canvas { flex: 1; position: relative; background: #0a0f1a; overflow: hidden; }
.canvas-eosin {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 65% 55% at 48% 52%, rgba(232,130,154,0.16) 0%, rgba(232,130,154,0.06) 45%, transparent 70%),
    radial-gradient(ellipse 40% 35% at 72% 35%, rgba(232,130,154,0.10) 0%, transparent 55%),
    radial-gradient(ellipse 45% 40% at 22% 68%, rgba(232,130,154,0.08) 0%, transparent 55%);
}
.canvas-hema {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 55% 48% at 47% 50%, rgba(123,94,167,0.22) 0%, transparent 65%),
    radial-gradient(ellipse 28% 32% at 78% 28%, rgba(123,94,167,0.14) 0%, transparent 55%),
    radial-gradient(ellipse 32% 28% at 18% 72%, rgba(123,94,167,0.12) 0%, transparent 50%);
}
.tissue-layer { position: absolute; inset: 0; background: radial-gradient(ellipse 80% 70% at 50% 50%, rgba(15,10,30,0.15) 0%, transparent 100%); transform-origin: center; }
.nuclei-layer { position: absolute; inset: 0; pointer-events: none; }
.nucleus { position: absolute; border-radius: 50%; background: radial-gradient(circle, rgba(80,45,110,0.85) 0%, rgba(123,94,167,0.5) 55%, transparent 100%); }

/* ── Reticle ──────────────────────────────────────────────── */
.reticle { position: absolute; inset: 0; pointer-events: none; z-index: 2; }
.reticle-h { position: absolute; top: 50%; left: 0; right: 0; height: 1px; background: rgba(6,182,212,0.18); }
.reticle-v { position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: rgba(6,182,212,0.18); }
.reticle-ring { position: absolute; border-radius: 50%; border: 1px solid rgba(6,182,212,0.24); }
.reticle-ring-outer { width: 90px; height: 90px; top: calc(50% - 45px); left: calc(50% - 45px); }
.reticle-ring-mid   { width: 44px; height: 44px; top: calc(50% - 22px); left: calc(50% - 22px); border-color: rgba(6,182,212,0.18); }
.reticle-ring-inner { width: 14px; height: 14px; top: calc(50% - 7px);  left: calc(50% - 7px); border-color: rgba(6,182,212,0.30); }
.reticle-tick { position: absolute; background: rgba(6,182,212,0.22); }
.tick-t,.tick-b { width: 1px; height: 6px; left: calc(50% - 0.5px); }
.tick-l,.tick-r { height: 1px; width: 6px; top: calc(50% - 0.5px); }
.tick-t { top: calc(50% - 50px); }
.tick-b { bottom: calc(50% - 50px); }
.tick-l { left: calc(50% - 50px); }
.tick-r { right: calc(50% - 50px); }
.scan-line {
  position: absolute; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(6,182,212,0.4) 30%, rgba(6,182,212,0.6) 50%, rgba(6,182,212,0.4) 70%, transparent 100%);
  animation: scan 4s ease-in-out infinite;
}
@keyframes scan {
  0%   { top: 15%; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { top: 85%; opacity: 0; }
}
.zoom-indicator {
  position: absolute; bottom: 8px; left: 8px; font-size: 9px;
  font-family: 'JetBrains Mono', monospace; color: rgba(6,182,212,0.7);
  background: rgba(0,0,0,0.5); padding: 2px 6px; border-radius: 3px;
}
.mockup-toolbar { position: absolute; bottom: 8px; right: 8px; display: flex; flex-direction: column; gap: 2px; z-index: 5; }
.mockup-toolbar button {
  width: 22px; height: 22px; background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.10);
  color: rgba(255,255,255,0.45); border-radius: 3px; font-size: 13px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: all 0.15s;
}
.mockup-toolbar button:hover { background: rgba(255,255,255,0.14); color: rgba(255,255,255,0.82); border-color: rgba(255,255,255,0.22); }
.tool-btn.active { background: rgba(37,99,235,0.28) !important; color: rgba(255,255,255,0.9) !important; border-color: rgba(37,99,235,0.5) !important; }
.tool-sep { height: 1px; background: rgba(255,255,255,0.08); margin: 1px 0; }

/* ── Ticker ───────────────────────────────────────────────── */
.ticker-wrap { overflow: hidden; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--bg2); padding: 0.6rem 0; }
.ticker { display: inline-flex; align-items: center; white-space: nowrap; animation: ticker-scroll 40s linear infinite; }
@keyframes ticker-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.ticker span { font-size: 11px; font-family: 'JetBrains Mono', monospace; font-weight: 500; color: var(--text3); padding: 0 0.75rem; letter-spacing: 0.06em; }
.ticker .sep { color: var(--accent); opacity: 0.4; padding: 0 0.1rem; }

/* ── Genetic sequence banners ─────────────────────────────── */
.section-banner {
  height: 36px; overflow: hidden; position: relative;
  display: flex; align-items: center; flex-shrink: 0;
}
.section-banner::before,
.section-banner::after {
  content: ''; position: absolute; top: 0; bottom: 0; width: 90px; z-index: 2; pointer-events: none;
}
.section-banner::before { left: 0; }
.section-banner::after  { right: 0; }
.banner-track {
  display: inline-block; white-space: nowrap; position: relative; z-index: 1;
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  letter-spacing: 0.22em; font-weight: 500; text-transform: uppercase;
  animation: seqScroll 38s linear infinite;
}
@keyframes seqScroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.features-banner  { background: linear-gradient(180deg,#e0f2fe,#f0f9ff 50%,#e0f2fe); border-top:1px solid rgba(2,132,199,0.18); border-bottom:1px solid rgba(2,132,199,0.12); }
.features-banner::before  { background: linear-gradient(90deg,#e0f2fe,transparent); }
.features-banner::after   { background: linear-gradient(270deg,#e0f2fe,transparent); }
.features-banner  .banner-track { color: rgba(2,132,199,0.65); }

.products-banner  { background: linear-gradient(180deg,#ede9fe,#f5f3ff 50%,#ede9fe); border-top:1px solid rgba(124,58,237,0.18); border-bottom:1px solid rgba(124,58,237,0.12); }
.products-banner::before  { background: linear-gradient(90deg,#ede9fe,transparent); }
.products-banner::after   { background: linear-gradient(270deg,#ede9fe,transparent); }
.products-banner  .banner-track { color: rgba(109,40,217,0.65); }

.education-banner { background: linear-gradient(180deg,#dbeafe,#eff6ff 50%,#dbeafe); border-top:1px solid rgba(37,99,235,0.18); border-bottom:1px solid rgba(37,99,235,0.12); }
.education-banner::before { background: linear-gradient(90deg,#dbeafe,transparent); }
.education-banner::after  { background: linear-gradient(270deg,#dbeafe,transparent); }
.education-banner .banner-track { color: rgba(29,78,216,0.62); animation-duration: 34s; }

.formats-banner   { background: linear-gradient(180deg,#eff6ff,#f8faff 50%,#eff6ff); border-top:1px solid rgba(37,99,235,0.14); border-bottom:1px solid rgba(37,99,235,0.10); }
.formats-banner::before   { background: linear-gradient(90deg,#eff6ff,transparent); }
.formats-banner::after    { background: linear-gradient(270deg,#eff6ff,transparent); }
.formats-banner   .banner-track { color: rgba(37,99,235,0.55); animation-duration: 30s; }

.about-banner     { background: linear-gradient(180deg,#e8f0fe,#eef2ff 50%,#e8f0fe); border-top:1px solid rgba(99,102,241,0.18); border-bottom:1px solid rgba(124,58,237,0.12); }
.about-banner::before     { background: linear-gradient(90deg,#e8f0fe,transparent); }
.about-banner::after      { background: linear-gradient(270deg,#e8f0fe,transparent); }
.about-banner     .banner-track { color: rgba(99,102,241,0.62); animation-duration: 45s; }

.cta-banner       { background: rgba(0,0,0,0.10) !important; border-top:1px solid rgba(255,255,255,0.15) !important; border-bottom:1px solid rgba(255,255,255,0.10) !important; }
.cta-banner::before { background: linear-gradient(90deg,rgba(29,78,216,0.5),transparent) !important; }
.cta-banner::after  { background: linear-gradient(270deg,rgba(29,78,216,0.5),transparent) !important; }
.cta-banner .banner-track { color: rgba(255,255,255,0.50) !important; animation-duration: 22s; }

.workflow-banner  { background: linear-gradient(180deg,#ede9fe,#f5f3ff 50%,#ede9fe); border-top:1px solid rgba(124,58,237,0.18); border-bottom:1px solid rgba(124,58,237,0.12); }
.workflow-banner::before  { background: linear-gradient(90deg,#ede9fe,transparent); }
.workflow-banner::after   { background: linear-gradient(270deg,#ede9fe,transparent); }
.workflow-banner  .banner-track { color: rgba(109,40,217,0.65); animation-duration: 36s; }

/* ── Features ─────────────────────────────────────────────── */
.features-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.2rem; }
.features-grid-3 { grid-template-columns: repeat(3,1fr); max-width: 900px; }
.feat-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 1.6rem 1.5rem; box-shadow: var(--shadow);
  transition: all 0.22s ease; display: flex; flex-direction: column; gap: 0.4rem;
  position: relative; overflow: hidden; text-decoration: none; color: inherit;
}
.feat-card::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg,var(--accent),var(--teal));
  transform: scaleX(0); transform-origin: left; transition: transform 0.25s ease;
}
.feat-card:hover { border-color: rgba(37,99,235,0.22); box-shadow: var(--shadow-lg); transform: translateY(-3px); text-decoration: none; color: inherit; }
.feat-card:hover::after { transform: scaleX(1); }
.feat-icon-wrap {
  font-size: 10px; font-family: 'JetBrains Mono', monospace; font-weight: 700;
  color: var(--accent); letter-spacing: 0.08em;
  background: rgba(37,99,235,0.06); border: 1px solid rgba(37,99,235,0.14);
  padding: 3px 8px; border-radius: 4px; width: fit-content; margin-bottom: 0.25rem;
}
.feat-card h3 { font-size: 14px; font-weight: 650; color: var(--text); }
.feat-card p  { font-size: 13px; color: var(--text2); line-height: 1.65; flex: 1; }
.feat-extra {
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height 0.35s ease, opacity 0.3s ease, margin-top 0.3s ease, padding-top 0.3s ease;
  font-size: 11.5px; color: var(--text3); font-family: 'JetBrains Mono', monospace;
  line-height: 1.7; border-top: 1px solid var(--border);
}
.feat-card:hover .feat-extra { max-height: 80px; opacity: 1; margin-top: 0.6rem; padding-top: 0.6rem; }
.feat-tag {
  font-size: 10px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--teal); background: rgba(2,132,199,0.06); border: 1px solid rgba(2,132,199,0.18);
  padding: 2px 7px; border-radius: 99px; width: fit-content; margin-top: 0.25rem;
}

/* ── Products ─────────────────────────────────────────────── */
.products-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.4rem; }
.product-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 2rem 1.75rem; box-shadow: var(--shadow);
  transition: all 0.25s ease; display: block; text-decoration: none; color: inherit;
}
.product-card:hover { border-color: rgba(124,58,237,0.28); box-shadow: 0 0 0 1px rgba(124,58,237,0.06), var(--shadow-lg); transform: translateY(-3px); text-decoration: none; color: inherit; }
.product-circle {
  width: 48px; height: 48px; border-radius: 50%;
  border: 2px solid rgba(124,58,237,0.28); background: rgba(124,58,237,0.06);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800; color: var(--hematoxylin);
  font-family: 'JetBrains Mono', monospace; position: relative; margin-bottom: 1.2rem;
}
.product-circle::before { content: ''; position: absolute; inset: -6px; border-radius: 50%; border: 1px solid rgba(124,58,237,0.14); }
.product-circle::after  { content: ''; position: absolute; inset: -12px; border-radius: 50%; border: 1px solid rgba(124,58,237,0.07); }
.product-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 0.2rem; color: var(--text); }
.product-card h3 span { color: var(--hematoxylin); }
.product-name-sub { font-size: 11px; color: var(--text3); font-family: 'JetBrains Mono', monospace; margin-bottom: 0.85rem; letter-spacing: 0.05em; }
.product-card p { font-size: 13px; color: var(--text2); line-height: 1.68; }
.product-badge {
  display: inline-block; margin-top: 1.1rem; font-size: 10px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; font-family: 'JetBrains Mono', monospace;
  color: var(--teal); border: 1px solid rgba(2,132,199,0.22);
  background: rgba(2,132,199,0.06); padding: 3px 8px; border-radius: 99px;
}
.circle-decor { position: absolute; border-radius: 50%; pointer-events: none; }
.circle-decor-lg { width: 400px; height: 400px; border: 1px solid rgba(124,58,237,0.06); }
.circle-decor-md { width: 240px; height: 240px; border: 1px solid rgba(124,58,237,0.06); }
.circle-decor-sm { width: 120px; height: 120px; border: 1px solid rgba(124,58,237,0.06); }
.circle-accent { border-color: rgba(37,99,235,0.07) !important; }
.circle-teal   { border-color: rgba(2,132,199,0.07) !important; }
.circle-hema   { border-color: rgba(124,58,237,0.07) !important; }
.circle-eosin  { border-color: rgba(2,132,199,0.07) !important; }

/* ── Education ────────────────────────────────────────────── */
.education-section { position: relative; }
.edu-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1.25rem; margin-top: 2rem; }
.edu-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 1.75rem; position: relative; overflow: hidden;
  transition: all 0.28s ease; display: block; text-decoration: none; color: inherit;
  box-shadow: var(--shadow);
}
.edu-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg,var(--accent),var(--teal));
  opacity: 0; transition: opacity 0.28s;
}
.edu-card:hover { border-color: rgba(37,99,235,0.22); transform: translateY(-4px); box-shadow: var(--shadow-lg); text-decoration: none; color: inherit; }
.edu-card:hover::before { opacity: 1; }
.edu-card-bg { position: absolute; inset: 0; pointer-events: none; opacity: 0.5; transition: opacity 0.3s; }
.edu-card:hover .edu-card-bg { opacity: 1; }
.edu-card:nth-child(1) .edu-card-bg { background: radial-gradient(ellipse 55% 50% at 35% 55%,rgba(2,132,199,0.04) 0%,transparent 55%),radial-gradient(ellipse 35% 40% at 70% 35%,rgba(124,58,237,0.03) 0%,transparent 50%); }
.edu-card:nth-child(2) .edu-card-bg { background: radial-gradient(ellipse 50% 45% at 60% 45%,rgba(124,58,237,0.04) 0%,transparent 55%),radial-gradient(ellipse 30% 35% at 25% 65%,rgba(37,99,235,0.03) 0%,transparent 50%); }
.edu-card:nth-child(3) .edu-card-bg { background: radial-gradient(ellipse 60% 55% at 45% 40%,rgba(2,132,199,0.04) 0%,transparent 55%),radial-gradient(ellipse 25% 30% at 75% 70%,rgba(124,58,237,0.03) 0%,transparent 45%); }
.edu-card:nth-child(4) .edu-card-bg { background: radial-gradient(ellipse 45% 50% at 55% 60%,rgba(37,99,235,0.05) 0%,transparent 55%),radial-gradient(ellipse 35% 35% at 30% 30%,rgba(2,132,199,0.04) 0%,transparent 50%); }
.edu-card h3 { font-size: 14px; font-weight: 650; margin-bottom: 0.45rem; position: relative; z-index: 1; color: var(--text); }
.edu-card p  { font-size: 13px; color: var(--text2); line-height: 1.65; position: relative; z-index: 1; }
.edu-tags    { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 0.9rem; position: relative; z-index: 1; }
.edu-tag     { font-size: 10px; font-family: 'JetBrains Mono', monospace; letter-spacing: 0.08em; color: var(--teal); border: 1px solid rgba(2,132,199,0.2); background: rgba(2,132,199,0.05); padding: 2px 7px; border-radius: 99px; }
.edu-footer  { text-align: center; margin-top: 2.5rem; }
.edu-note    { font-size: 12px; color: var(--text3); margin-bottom: 1.25rem; }
.edu-note span { color: var(--teal); }

/* ── Formats ──────────────────────────────────────────────── */
.format-pills { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.format-pill {
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--bg); border: 1px solid var(--border);
  padding: 0.5rem 0.9rem; border-radius: var(--radius);
  box-shadow: var(--shadow); transition: all 0.18s;
}
.format-pill:hover { border-color: rgba(37,99,235,0.22); transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.fmt-dot    { width: 6px; height: 6px; border-radius: 50%; background: var(--teal); flex-shrink: 0; }
.fmt-vendor { font-size: 12px; font-weight: 600; color: var(--text); }
.fmt-exts   { font-size: 10px; font-family: 'JetBrains Mono', monospace; color: var(--text3); }

/* ── About ────────────────────────────────────────────────── */
.about-grid {
  max-width: 1100px; margin: 0 auto; padding: 5rem 2rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start;
}
.about-text h2 { font-size: clamp(1.6rem,3vw,2.4rem); font-weight: 700; letter-spacing: -0.02em; margin-bottom: 1rem; }
.about-text p  { font-size: 14px; color: var(--text2); line-height: 1.75; margin-bottom: 0.9rem; }
.about-links   { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1.5rem; }
.about-cards   { display: flex; flex-direction: column; gap: 1rem; }
.about-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem; box-shadow: var(--shadow);
  transition: all 0.22s ease; display: block; text-decoration: none; color: inherit;
  position: relative; overflow: hidden;
}
.about-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg,var(--accent),var(--teal));
  opacity: 0; transition: opacity 0.22s;
}
.about-card:hover { border-color: rgba(37,99,235,0.2); box-shadow: var(--shadow-lg); transform: translateX(3px); text-decoration: none; color: inherit; }
.about-card:hover::before { opacity: 1; }
.about-card h4 { font-size: 14px; font-weight: 650; color: var(--text); margin-bottom: 0.35rem; }
.about-card p  { font-size: 13px; color: var(--text2); line-height: 1.65; }

/* ── CTA ──────────────────────────────────────────────────── */
.cta-section { position: relative; background: var(--accent); overflow: hidden; }
.cta-inner { max-width: 700px; margin: 0 auto; padding: 6rem 2rem; text-align: center; position: relative; z-index: 1; }
.cta-glow { position: absolute; inset: 0; background: radial-gradient(ellipse 60% 70% at 50% 50%,rgba(255,255,255,0.08) 0%,transparent 70%); pointer-events: none; }
.cta-section .section-tag  { color: rgba(255,255,255,0.8); border-color: rgba(255,255,255,0.22); background: rgba(255,255,255,0.1); }
.cta-section h2 { color: #fff; font-size: clamp(1.8rem,3.5vw,2.8rem); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 1rem; }
.cta-section p  { color: rgba(255,255,255,0.82); font-size: 16px; line-height: 1.7; max-width: 520px; margin: 0 auto 2.5rem; }
.cta-section .btn-primary { background: #fff; color: var(--accent); box-shadow: 0 4px 20px rgba(0,0,0,0.15); }
.cta-section .btn-primary:hover { background: rgba(255,255,255,0.93); color: var(--accent); }
.cta-section .btn-ghost   { border-color: rgba(255,255,255,0.35); color: #fff; }
.cta-section .btn-ghost:hover { background: rgba(255,255,255,0.12); color: #fff; }

/* ── Footer ───────────────────────────────────────────────── */
.footer { background: #0f1629; border-top: 1px solid rgba(255,255,255,0.06); padding: 2rem 0; }
.footer-inner { max-width: 1100px; margin: 0 auto; padding: 0 2rem; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1.5rem; }
.footer .nav-logo    { color: #fff; }
.footer .logo-accent { color: rgba(96,165,250,0.88); }
.footer .logo-dot    { color: rgba(6,182,212,0.75); }
.footer .logo-ai     { color: rgba(6,182,212,0.65); }
.footer-tagline { font-size: 11px; color: rgba(255,255,255,0.28); margin-top: 3px; letter-spacing: 0.06em; text-transform: uppercase; }
.footer-links { display: flex; gap: 0.2rem; align-items: center; flex-wrap: wrap; justify-content: center; }
.footer-links a { font-size: 12px; color: rgba(255,255,255,0.38); padding: 4px 8px; border-radius: var(--radius); transition: color 0.15s; text-decoration: none; }
.footer-links a:hover { color: rgba(255,255,255,0.8); }
.footer-right  { text-align: right; }
.footer-copy   { font-size: 11px; color: rgba(255,255,255,0.28); display: block; margin-bottom: 4px; }
.footer-location { font-size: 11px; color: rgba(255,255,255,0.28); }
.footer-location span { color: rgba(6,182,212,0.65); }

/* ── Auth pages ───────────────────────────────────────────── */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 2rem; background: var(--bg2); }
.auth-card { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 2.5rem; width: 100%; max-width: 420px; box-shadow: var(--shadow-lg); }
.auth-logo { display: block; margin-bottom: 1.5rem; text-align: center; }
.auth-logo .nav-logo { font-size: 22px; }
.auth-title { font-size: 22px; font-weight: 700; margin-bottom: 0.35rem; color: var(--text); text-align: center; }
.auth-sub   { font-size: 14px; color: var(--text3); margin-bottom: 2rem; text-align: center; }
.form-group { margin-bottom: 1.1rem; }
.form-label { display: block; font-size: 13px; font-weight: 600; color: var(--text2); margin-bottom: 0.4rem; }
.form-input { width: 100%; background: var(--bg2); border: 1px solid var(--border2); color: var(--text); border-radius: var(--radius); padding: 0.6rem 0.9rem; font-size: 14px; font-family: 'Inter',sans-serif; transition: border-color 0.15s, box-shadow 0.15s; }
.form-input::placeholder { color: var(--text3); }
.form-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,0.10); }
.form-btn   { width: 100%; margin-top: 0.25rem; padding: 0.7rem; }
.auth-footer { text-align: center; margin-top: 1.5rem; font-size: 13px; color: var(--text3); }
.auth-footer a { color: var(--accent); font-weight: 500; }
.auth-err { font-size: 13px; color: #dc2626; margin-bottom: 1rem; padding: 0.6rem 0.9rem; background: #fef2f2; border: 1px solid #fecaca; border-radius: var(--radius); display: none; }
.auth-err.visible { display: block; }

/* ── Dashboard ────────────────────────────────────────────── */
.dash-page { min-height: 100vh; background: var(--bg2); }
.dash-nav  { background: var(--bg); border-bottom: 1px solid var(--border); padding: 0 2rem; height: 58px; display: flex; align-items: center; justify-content: space-between; box-shadow: var(--shadow); }
.dash-nav-right { display: flex; align-items: center; gap: 0.75rem; }
.dash-user  { font-size: 13px; color: var(--text2); }
.dash-body  { max-width: 1200px; margin: 0 auto; padding: 2.5rem 2rem; }
.dash-header { margin-bottom: 2rem; }
.dash-title { font-size: 24px; font-weight: 700; color: var(--text); margin-bottom: 0.25rem; }
.dash-sub   { font-size: 14px; color: var(--text3); }
.slide-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(240px,1fr)); gap: 1.25rem; }
.slide-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); transition: all 0.22s; }
.slide-card:hover { box-shadow: var(--shadow-lg); border-color: rgba(37,99,235,0.18); transform: translateY(-2px); }
.slide-thumb { height: 140px; background: linear-gradient(135deg,#0a0f1a,#131b30); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.slide-thumb::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg,rgba(37,99,235,0.05),rgba(2,132,199,0.05)); }
.slide-meta    { padding: 0.9rem 1rem; }
.slide-name    { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 0.3rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.slide-info    { font-size: 11px; color: var(--text3); display: flex; gap: 0.75rem; }
.slide-actions { padding: 0.75rem 1rem; border-top: 1px solid var(--border); display: flex; gap: 0.5rem; }
.empty-state   { text-align: center; padding: 5rem 2rem; }
.empty-state h3 { font-size: 18px; color: var(--text); margin-bottom: 0.5rem; }
.empty-state p  { font-size: 14px; color: var(--text3); margin-bottom: 1.5rem; }

/* ── Upload modal ─────────────────────────────────────────── */
.modal-overlay { position: fixed; inset: 0; background: rgba(15,23,42,0.45); z-index: 200; display: flex; align-items: center; justify-content: center; padding: 1.5rem; backdrop-filter: blur(4px); }
.modal-overlay.hidden { display: none; }
.modal { background: var(--bg); border: 1px solid var(--border); border-radius: 14px; padding: 2rem; width: 100%; max-width: 480px; box-shadow: 0 24px 64px rgba(15,23,42,0.16); }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; }
.modal-title  { font-size: 18px; font-weight: 700; color: var(--text); }
.modal-close  { background: none; border: none; color: var(--text3); font-size: 20px; cursor: pointer; padding: 4px; border-radius: var(--radius); transition: color 0.15s; }
.modal-close:hover { color: var(--text); }
.drop-zone { border: 2px dashed var(--border2); border-radius: var(--radius-lg); padding: 2.5rem; text-align: center; transition: all 0.18s; cursor: pointer; }
.drop-zone:hover { border-color: var(--accent); background: rgba(37,99,235,0.02); }
.drop-zone.drag-over { border-color: var(--accent); background: rgba(37,99,235,0.04); }
.drop-icon    { font-size: 2rem; margin-bottom: 0.75rem; }
.drop-zone p  { font-size: 14px; color: var(--text2); margin-bottom: 0.5rem; }
.drop-sub     { font-size: 12px; color: var(--text3) !important; }
.drop-formats { font-size: 11px; color: var(--text3) !important; margin-top: 0.75rem !important; }
.progress-bar  { background: var(--bg3); border-radius: 99px; height: 5px; margin-top: 0.75rem; overflow: hidden; }
.progress-fill { height: 5px; background: linear-gradient(90deg,var(--accent),var(--teal)); border-radius: 99px; width: 0%; transition: width 0.2s; }
#upload-status { font-size: 13px; color: var(--text2); margin-bottom: 0.5rem; }

/* ── Viewer ───────────────────────────────────────────────── */
.viewer-page   { display: flex; flex-direction: column; height: 100vh; overflow: hidden; background: #0a0f1a; }
.viewer-nav    { height: 52px; background: var(--bg); border-bottom: 1px solid var(--border); display: flex; align-items: center; padding: 0 1rem; gap: 1rem; flex-shrink: 0; }
.viewer-title  { flex: 1; font-size: 13px; color: var(--text2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.viewer-nav-right { display: flex; align-items: center; gap: 0.75rem; }
.slide-badge   { font-size: 11px; color: var(--teal); border: 1px solid rgba(2,132,199,0.28); background: rgba(2,132,199,0.06); padding: 2px 8px; border-radius: 99px; }
.viewer-layout  { display: flex; flex: 1; overflow: hidden; }
.viewer-sidebar { width: 200px; flex-shrink: 0; background: var(--bg); border-right: 1px solid var(--border); overflow-y: auto; padding: 1rem 0; }
.sidebar-section { padding: 0 0.85rem 1rem; border-bottom: 1px solid var(--border); margin-bottom: 0.5rem; }
.sidebar-label   { font-size: 10px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text3); margin-bottom: 0.6rem; }
.mag-grid  { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.info-row  { display: flex; justify-content: space-between; font-size: 11px; padding: 3px 0; }
.info-row span:first-child { color: var(--text3); }
.info-row span:last-child  { color: var(--text2); }
.sidebar-thumb { width: 100%; border-radius: 4px; margin-top: 0.5rem; }
.viewer-main   { flex: 1; position: relative; background: #04060d; }
#osd-viewer    { width: 100%; height: 100%; }
.viewer-controls { position: absolute; bottom: 1.25rem; right: 1.25rem; display: flex; flex-direction: column; gap: 5px; }
.viewer-controls button { width: 36px; height: 36px; background: rgba(255,255,255,0.9); border: 1px solid var(--border2); color: var(--text); border-radius: var(--radius); font-size: 18px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.15s; }
.viewer-controls button:hover { background: #fff; border-color: var(--accent); box-shadow: 0 0 12px rgba(37,99,235,0.18); }

/* ── Workflow ─────────────────────────────────────────────── */
.workflow-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.4rem; margin-top: 2.5rem; }
.workflow-step {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 2rem 1.75rem; box-shadow: var(--shadow); position: relative;
  transition: all 0.22s ease;
}
.workflow-step:hover { border-color: rgba(124,58,237,0.22); box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.step-num {
  width: 32px; height: 32px; border-radius: 50%;
  background: rgba(124,58,237,0.08); border: 1px solid rgba(124,58,237,0.22);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-family: 'JetBrains Mono', monospace; font-weight: 700;
  color: var(--hematoxylin); margin-bottom: 1.2rem;
}
.workflow-step h3 { font-size: 14.5px; font-weight: 650; color: var(--text); margin-bottom: 0.5rem; }
.workflow-step p  { font-size: 13px; color: var(--text2); line-height: 1.68; }

/* ── Interactive mockup viewer additions ─────────────────── */
.tissue-pan {
  position: absolute; inset: 0; will-change: transform;
  transition: transform 0.04s linear;
}
.mockup-canvas { cursor: crosshair; user-select: none; -webkit-user-select: none; }

.channel-selector {
  position: absolute; top: 7px; left: 7px; display: flex; gap: 3px; z-index: 5;
}
.chan-btn {
  padding: 2px 8px; font-size: 8px; font-family: 'JetBrains Mono', monospace;
  font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  background: rgba(0,0,0,0.48); border: 1px solid rgba(255,255,255,0.10);
  color: rgba(255,255,255,0.35); border-radius: 3px; cursor: pointer; transition: all 0.15s;
}
.chan-btn:hover { color: rgba(255,255,255,0.65); border-color: rgba(255,255,255,0.22); }
.chan-btn.active { background: rgba(6,182,212,0.2); border-color: rgba(6,182,212,0.5); color: rgba(6,182,212,0.95); }

.viewer-coord {
  position: absolute; bottom: 26px; left: 8px; z-index: 5;
  font-size: 8.5px; font-family: 'JetBrains Mono', monospace; letter-spacing: 0.04em;
  color: rgba(6,182,212,0.8); background: rgba(0,0,0,0.52);
  padding: 2px 7px; border-radius: 3px; pointer-events: none;
  min-height: 16px; transition: opacity 0.15s;
}

.thumb-viewport {
  position: absolute; border: 1px solid rgba(6,182,212,0.85);
  background: rgba(6,182,212,0.14); pointer-events: none;
  box-shadow: 0 0 0 1px rgba(6,182,212,0.18);
  transition: all 0.12s ease;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 960px) {
  .hero { flex-direction: column; padding: 100px 1.5rem 60px; gap: 3rem; }
  .hero-visual { max-width: 100%; }
  .features-grid, .products-grid, .workflow-grid { grid-template-columns: repeat(2,1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-right { text-align: center; }
  .footer-links { justify-content: center; }
}
@media (max-width: 600px) {
  .features-grid, .products-grid, .workflow-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2,1fr); }
  .hero-stats .stat:nth-child(2) { border-right: none; }
  .edu-grid { grid-template-columns: 1fr; }
}