:root {
  /* Light (default) */
  --bg: #ffffff;
  --panel: #ffffff;
  --text: #0b0c10;
  --muted: #475569;
  --primary: #ff4d6d;
  --primary-2: #d946ef;
  --accent: #ef4444;
  --ring: rgba(255, 77, 109, 0.30);
  --border-soft: rgba(0,0,0,0.08);
  --border-strong: rgba(0,0,0,0.12);
  --card-bg: rgba(0,0,0,0.02);
  --glass-shadow: 0 16px 40px rgba(0,0,0,0.08);

  /* header height for fixed nav */
  --nav-height: 84px;

  /* spacing (easy to tweak) */
  --space-hero-t: 64px;
  --space-hero-b: 24px;
  --space-sec-t: 64px;
  --space-sec-b: 64px;
  --space-cta-t: 56px;
  --space-cta-b: 72px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  /* offset content for fixed header */
  padding-top: var(--nav-height);
}

.muted { color: var(--muted); }
.card-actions { margin-top: 12px; }

/* Background effects */
.bg { position: fixed; inset: 0; pointer-events: none; }
.fx-grid {
  background-image: linear-gradient(to right, rgba(255,255,255,0.06) 1px, transparent 1px), linear-gradient(to bottom, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 70%);
  opacity: 0.3;
}
.fx-radial { filter: blur(60px); opacity: 0.35; }
.fx-radial-1 { background: radial-gradient(600px 600px at 20% 15%, rgba(217,70,239,0.18), transparent 70%); }
.fx-radial-2 { background: radial-gradient(600px 600px at 80% 85%, rgba(239,68,68,0.14), transparent 70%); }
.fx-noise { background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="240" height="240" viewBox="0 0 240 240"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="2" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23n)" opacity="0.035"/></svg>'); mix-blend-mode: soft-light; }

.container { width: min(1120px, 92%); margin-inline: auto; }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; position: fixed; top: 0; left: 0; right: 0; width: 100%; background: transparent; backdrop-filter: blur(10px); z-index: 20; }
.nav .container { width: min(1120px, 92%); margin-inline: auto; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700; letter-spacing: 0.2px; }
.brand-logo { height: 32px; width: auto; display: block; }
.brand-logo { color: inherit; }
.brand-logo.lg { height: 42px; width: auto; }
.brand-logo.sm { height: 24px; width: auto; }
.brand-text { font-size: 1.05rem; }

.nav-actions { display: flex; gap: 10px; align-items: center; }

/* Language Dropdown */
.lang-dropdown {
  position: relative;
  margin-right: 12px;
}

.lang-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  color: #4b5563; /* slate-600 */
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: auto;
  justify-content: center;
  box-shadow: none;
}

.lang-trigger:hover {
  transform: none;
  background: transparent;
  border: none;
  box-shadow: none;
}

.lang-trigger.open {
  background: transparent;
  border: none;
  box-shadow: none;
}

.lang-trigger .globe-icon { width: 18px; height: 18px; display: inline-block; color: currentColor; }

.lang-trigger .lang-text { font-size: 12px; letter-spacing: 1px; font-weight: 700; }

.lang-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.95);
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: 12px;
  backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  padding: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s ease;
  z-index: 1000;
  min-width: 130px;
}

.lang-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 12px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: #0b0c10;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
}

.lang-option:hover {
  background: rgba(0,0,0,0.06);
}

.lang-option.active {
  background: rgba(255,77,109,0.1);
  color: var(--primary);
  font-weight: 600;
}

.lang-option .lang-text {
  font-size: 13px;
  letter-spacing: 0.3px;
}

/* shadcn-like buttons */
.btn { appearance: none; border: 1px solid transparent; border-radius: 10px; padding: 9px 14px; color: var(--text); background: transparent; text-decoration: none; font-weight: 600; letter-spacing: .2px; transition: all .2s ease; display: inline-flex; align-items: center; gap: 8px; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-ghost { color: var(--muted); }
.btn-ghost:hover { color: var(--text); background: rgba(217,70,239,0.06); }
.btn-outline { border-color: rgba(255,255,255,0.14); background: rgba(255,255,255,0.02); }
.btn-outline:hover { border-color: rgba(217,70,239,0.35); box-shadow: 0 0 0 2px var(--ring), 0 0 0 4px rgba(255,255,255,0.05) inset; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #0b0c10; border: none; }
.btn-primary:hover { filter: saturate(1.05) brightness(1.02); }
.btn-primary-white { background: rgba(255,255,255,0.95); color: #0b0c10; border: none; box-shadow: 0 8px 25px rgba(0,0,0,0.15); backdrop-filter: blur(10px); }
.btn-primary-white:hover { background: rgba(255,255,255,1); box-shadow: 0 12px 35px rgba(0,0,0,0.2); transform: translateY(-2px); }
.btn-outline-white { border-color: rgba(255,255,255,0.3); background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.9); backdrop-filter: blur(10px); }
.btn-outline-white:hover { border-color: rgba(255,255,255,0.6); background: rgba(255,255,255,0.2); box-shadow: 0 8px 25px rgba(0,0,0,0.15); }
.btn-lg { padding: 13px 18px; border-radius: 12px; font-size: 0.95rem; }

/* badges */
.badge-row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.badge { padding: 6px 10px; border-radius: 999px; font-size: 12px; letter-spacing: .3px; border: 1px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.04); color: var(--muted); }
.badge-muted { color: var(--muted); border-color: rgba(255,255,255,0.12); background: rgba(255,255,255,0.04); }
.badge-success { color: #fecdd3; border-color: rgba(244,63,94,0.35); background: rgba(244,63,94,0.10); }

/* hero */
.hero { padding: var(--space-hero-t) 0 var(--space-hero-b); }
.hero-card { 
  background: #ffffff;
  border-radius: 24px;
  padding: 60px 40px;
  position: relative;
  overflow: hidden;
  /* subtle pink gradient-like shadow (very light) */
  box-shadow:
    0 26px 64px rgba(255, 77, 109, 0.08),
    0 14px 32px rgba(255, 128, 170, 0.05),
    0 4px 12px rgba(255, 166, 194, 0.03),
    inset 0 1px 0 rgba(255,255,255,0.10);
  display: grid;
  gap: 40px;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  min-height: 600px;
}
.hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: none;
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; text-align: left; }
.hero-title { font-size: clamp(36px, 5vw, 60px); line-height: 1.1; letter-spacing: -1.2px; margin: 0 0 20px; color: var(--text); text-align: left; }
.grad-white { background: linear-gradient(90deg, var(--primary), var(--primary-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { max-width: 480px; margin: 0 0 32px; color: var(--text); font-size: 16px; line-height: 1.6; text-align: left; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-start; }
.hero-media { position: relative; z-index: 2; }

.glass { position: relative; background: var(--panel); border: 1px solid var(--border-soft); border-radius: 16px; box-shadow: inset 0 1px 0 rgba(255,255,255,0.05), var(--glass-shadow); }
.glass::before { content: ""; position: absolute; inset: 0; padding: 1px; border-radius: 16px; background: linear-gradient(135deg, rgba(255,77,109,0.6), rgba(217,70,239,0.6)); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; opacity: .55; }
.glass-white { position: relative; background: #ffffff; border: 1px solid rgba(255,255,255,0.2); border-radius: 16px; box-shadow: 0 8px 32px rgba(0,0,0,0.12); backdrop-filter: blur(20px); }
.glass-white::before { content: ""; position: absolute; inset: 0; padding: 1px; border-radius: 16px; background: linear-gradient(135deg, rgba(255,255,255,0.8), rgba(255,255,255,0.4)); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; opacity: 0.6; }
.hero-media { margin-top: 0; padding: 10px; }
.media-bar { display: flex; gap: 8px; align-items: center; border-bottom: 1px solid rgba(0,0,0,0.08); padding: 10px; }
.media-bar .title { margin-left: auto; color: rgba(0,0,0,0.6); font-size: 12px; letter-spacing: .2px; }

@media (max-width: 720px) {
  .media-bar { padding: 8px; }
  .media-bar .title { font-size: 11px; }
}
.dot { width: 8px; height: 8px; border-radius: 999px; display: inline-block; }
.dot.red { background: #ef4444; }
.dot.amber { background: #f59e0b; }
.dot.green { background: #10b981; }
.media-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; padding: 12px; }
.media-card { position: relative; border: 1px solid var(--border-soft); border-radius: 14px; overflow: hidden; background: var(--card-bg); }
.media-card.focused { outline: 2px solid var(--accent); box-shadow: 0 0 0 4px rgba(239,68,68,0.25); }
.media-skeleton { height: 140px; background: linear-gradient(120deg, rgba(217,70,239,0.14), rgba(255,77,109,0.10)); }
.media-label { position: absolute; left: 10px; bottom: 10px; font-size: 12px; color: #0b0c10; background: rgba(255,255,255,0.85); padding: 4px 8px; border-radius: 8px; border: 1px solid rgba(0,0,0,0.06); }

/* Text Demo Styles */
.text-demo { padding: 20px; display: grid; gap: 16px; }
.text-sample { display: grid; gap: 8px; }
.text-line { padding: 8px 12px; border-radius: 8px; background: rgba(0,0,0,0.04); border: 1px solid rgba(0,0,0,0.08); font-size: 14px; line-height: 1.4; color: #0b0c10; font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace; }
.text-line.selected { padding: 8px 12px; border-radius: 8px; background: rgba(0,0,0,0.04) !important; border: 1px solid rgba(0,0,0,0.08) !important; font-size: 14px; line-height: 1.4; color: #0b0c10; font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace; }
/* Ensure no red/pink styling on selected lines */
.text-sample .text-line.selected {
  background: rgba(0,0,0,0.04) !important;
  border-color: rgba(0,0,0,0.08) !important;
  box-shadow: none !important;
}
.explanation-bubble { background: rgba(255,255,255,0.95); border: 1px solid rgba(0,0,0,0.08); border-radius: 12px; padding: 16px; box-shadow: 0 8px 25px rgba(0,0,0,0.08); }
.bubble-header { font-weight: 600; color: #0b0c10; margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.bubble-content { color: rgba(0,0,0,0.7); font-size: 14px; line-height: 1.5; }



/* sections */
.section { padding: var(--space-sec-t) 0 var(--space-sec-b); }
#cta.section { padding: var(--space-cta-t) 0 var(--space-cta-b); }
.section-head { text-align: center; margin-bottom: 48px; max-width: 800px; margin-left: auto; margin-right: auto; }
.section-title { position: relative; font-size: clamp(32px, 4vw, 48px); margin: 0 0 20px; letter-spacing: -0.8px; font-weight: 700; line-height: 1.2; }
.section-title::after { content: ""; position: absolute; left: 50%; transform: translateX(-50%); bottom: -12px; width: 80px; height: 3px; border-radius: 999px; background: linear-gradient(90deg, var(--primary), var(--primary-2)); box-shadow: 0 0 20px rgba(217,70,239,0.35); }
.section-sub { color: var(--muted); margin: 0; font-size: 18px; line-height: 1.6; font-weight: 400; }

/* demo video */
.demo-media { position: relative; border: none; border-radius: 16px; overflow: hidden; background: #000; box-shadow: 0 16px 40px rgba(255,77,109,0.08), 0 6px 20px rgba(217,70,239,0.06); width: min(960px, 100%); margin: 0 auto; }
.demo-wrap { position: relative; aspect-ratio: 16 / 9; width: 100%; border-radius: 16px; overflow: hidden; }
.demo-video { position: absolute; inset: 0; width: 100%; height: 100%; display: block; object-fit: cover; background: #000; border-radius: 16px; }
/* (removed) .demo-notes, .demo-actions: no longer used */
@media (max-width: 720px) {
  .demo-wrap { aspect-ratio: 16 / 9; }
}

/* modal (terms/commands) */
.modal { position: fixed; inset: 0; display: none; place-items: center; background: rgba(11,12,16,0.6); backdrop-filter: blur(2px); z-index: 1200; }
.modal.open { display: grid; }
.modal-dialog { width: min(920px, 92%); border-radius: 16px; background: var(--panel); border: 1px solid var(--border-strong); box-shadow: 0 16px 40px rgba(0,0,0,0.25); overflow: hidden; }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--border-soft); background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(245,246,248,0.95)); }
.modal-title { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: 0.2px; color: #0b0c10; }
.modal-close { appearance: none; border: 1px solid var(--border-strong); background: #fff; color: #0b0c10; border-radius: 8px; padding: 6px 10px; font-weight: 700; cursor: pointer; }
.modal-close:hover { background: #f3f4f6; }
.modal-body { padding: 16px; max-height: min(70vh, 680px); overflow: auto; }
.modal-body h4 { margin: 14px 0 8px; font-size: 16px; }
.modal-body p { margin: 6px 0 10px; color: var(--muted); }
.modal-body ul { margin: 6px 0 16px 18px; }
.modal-body li { margin: 4px 0; }
.kbd { display: inline-block; padding: 2px 6px; border: 1px solid var(--border-strong); border-radius: 4px; background: rgba(255,255,255,0.9); font-family: 'SF Mono', ui-monospace, monospace; font-size: 12px; }

.grid.features { display: grid; gap: 24px; grid-template-columns: repeat(3, minmax(0,1fr)); max-width: 1000px; margin: 0 auto; }

/* Desktop: widen card area to match hero/container width on key sections */
@media (min-width: 901px) {
  #features .grid.features,
  #where .grid.features,
  #use-cases .grid.features,
  #faq .grid.features {
    max-width: none;
    width: 100%;
  }
}
.card { background: var(--card-bg); border: 1px solid var(--border-soft); border-radius: 16px; padding: 28px 24px; transition: all .3s ease; position: relative; overflow: hidden; }

.card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), var(--primary-2)); opacity: 0; transition: opacity .3s ease; }

.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.card-title { margin: 0; font-size: 20px; letter-spacing: -0.3px; font-weight: 600; line-height: 1.3; }
.card-body { margin: 0; color: var(--muted); line-height: 1.6; font-size: 15px; }

/* FAQ tables */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin-top: 8px; }
.faq-table { width: 100%; min-width: 1200px; border-collapse: collapse; font-size: 12px; }
.faq-table th, .faq-table td { border: 1px solid var(--border-soft); padding: 10px 14px; vertical-align: top; }
.faq-table thead th { background: rgba(0,0,0,0.04); color: #0b0c10; font-weight: 600; text-align: left; }
.faq-table tbody tr:nth-child(odd) td { background: rgba(0,0,0,0.02); }

@media (max-width: 720px) {
  .faq-table { font-size: 12px; min-width: 1000px; }
  .faq-table th, .faq-table td { padding: 9px 12px; }
}

/* where it works: badges + lists */
#where .card-head { align-items: center; justify-content: space-between; }
.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
  background: transparent;
  color: var(--primary);
  border: 1px solid rgba(255,77,109,0.55);
}

.icon-list { list-style: none; padding-left: 0; margin: 0; }
.icon-list li { position: relative; padding-left: 26px; margin: 10px 0; }
.icon-list li::before {
  content: "✓";
  position: absolute;
  left: 6px;
  top: 0.1em;
  font-size: 14px;
  line-height: 1;
  color: var(--primary);
}
.icon-list .li-desc { font-size: 13px; color: var(--muted); opacity: 0.95; margin-top: 2px; line-height: 1.45; }

/* icons (pure CSS) */
.icon { width: 22px; height: 22px; border-radius: 6px; background: linear-gradient(135deg, rgba(255,77,109,0.9), rgba(217,70,239,0.9)); box-shadow: 0 4px 20px rgba(255,77,109,0.25), 0 2px 10px rgba(217,70,239,0.15); transition: all .3s ease; }

.i-vision { mask: radial-gradient(circle at 50% 50%, black 60%, transparent 61%); }
.i-focus { mask: conic-gradient(black 0 25%, transparent 25% 75%, black 75% 100%); }
.i-shield { clip-path: polygon(50% 0%, 95% 25%, 80% 90%, 20% 90%, 5% 25%); }
.i-bolt { clip-path: polygon(40% 0, 55% 0, 45% 35%, 65% 35%, 35% 100%, 45% 60%, 30% 60%); }

/* steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; grid-template-columns: repeat(3, minmax(0,1fr)); }
.step { display: flex; gap: 14px; align-items: flex-start; background: var(--card-bg); border: 1px solid var(--border-soft); border-radius: 14px; padding: 16px; transition: border-color .2s ease, box-shadow .2s ease, background .2s ease; }

.step .content p { margin: 4px 0 0; }
.num { width: 32px; height: 32px; min-width: 32px; min-height: 32px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; color: #0b0c10; background: linear-gradient(135deg, var(--primary), var(--primary-2)); box-shadow: 0 6px 20px rgba(255,77,109,0.25); flex-shrink: 0; }
.content h4 { margin: 0 0 6px; }
.content p { margin: 0; color: var(--muted); }

/* CTA */
.cta { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 20px; }
.cta-title { margin: 0 0 6px; font-size: 22px; }
.cta-sub { margin: 0; color: var(--muted); }
.cta-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* footer */
.footer { display: flex; align-items: center; justify-content: space-between; padding: 40px 0 60px; color: var(--muted); }
.foot-left { display: flex; align-items: center; gap: 10px; }
.foot-right { display: flex; gap: 14px; }
.link { color: var(--muted); text-decoration: none; }
.btn-primary:hover { transform: translateY(-2px); }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 2px rgba(11,12,16,0.9), 0 0 0 4px var(--ring); }
.link:hover { color: var(--primary-2); text-decoration: underline; text-underline-offset: 3px; }

/* responsive */
@media (max-width: 1024px) {
  .grid.features { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 20px; max-width: 700px; }
  .steps { grid-template-columns: 1fr; }
  .hero-card { 
    grid-template-columns: 1fr; 
    padding: 50px 40px; 
    gap: 40px; 
    text-align: left;
    min-height: auto;
  }
  .hero-content { max-width: 600px; margin: 0; }
  .hero-title { font-size: clamp(32px, 5vw, 52px); text-align: left; }
  .hero-sub { max-width: 550px; margin: 0 0 32px; text-align: left; }
  .hero-cta { justify-content: flex-start; }
  .section-title { font-size: clamp(28px, 4vw, 40px); }
  .section-head { margin-bottom: 40px; }
}

/* Shortcut mini tutorial */
.kbd-demo {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  margin-top: 10px;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(6px);
}
.kbd-demo .keys { display: inline-flex; align-items: center; gap: 6px; }
.kbd-demo .kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  font-weight: 600;
  font-size: 14px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(245,246,248,0.95));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7), 0 2px 6px rgba(0,0,0,0.08);
}
.kbd-demo .plus { color: var(--muted); font-weight: 600; }
.kbd-demo .hint { color: var(--muted); font-size: 12px; flex-shrink: 0; }
.selection-demo {
  width: 120px;
  height: 40px;
  padding: 6px;
  border-radius: 8px;
  border: 1px dashed var(--border-strong);
  background: var(--card-bg);
  display: grid;
  gap: 4px;
}
.selection-demo .line { height: 6px; border-radius: 3px; background: rgba(148,163,184,0.45); }
.selection-demo .line.highlight { background: linear-gradient(90deg, rgba(99,102,241,0.85), rgba(99,102,241,0.35)); }

.screenshot-demo {
  background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(244,63,94,0.1));
  border: 2px dashed rgba(99,102,241,0.3);
}

.screenshot-demo .screenshot-area {
  width: 100%;
  height: 100%;
  background: rgba(99,102,241,0.15);
  border-radius: 4px;
  position: relative;
}

.screenshot-demo .screenshot-area::after {
  content: "📷";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
  opacity: 0.7;
}
@media (max-width: 900px) and (min-width: 721px) {
  .hero-card {
    padding: 45px 32px;
    gap: 36px;
  }
  .hero-title {
    font-size: clamp(30px, 6vw, 48px);
  }
  .hero-sub {
    font-size: 16px;
    max-width: 500px;
  }
  .text-demo {
    padding: 18px;
  }
}

@media (max-width: 720px) {
  :root {
    --space-hero-t: 40px;
    --space-hero-b: 20px;
    --space-sec-t: 48px;
    --space-sec-b: 48px;
    --space-cta-t: 44px;
    --space-cta-b: 56px;
  }
  .brand-logo.lg {
    height: 32px;
  }
  .nav .container {
    width: 100%;
    padding: 0 16px;
  }
  .nav-actions { display: flex; gap: 8px; align-items: center; }
  .lang-dropdown {
    margin-right: 8px;
  }
  .lang-trigger {
    padding: 0;
    min-width: auto;
    font-size: 14px;
    background: transparent;
    border: none;
    box-shadow: none;
  }
  .lang-trigger .globe-icon { width: 16px; height: 16px; }
  .lang-menu {
    min-width: 100px;
  }
  .lang-option {
    padding: 6px 8px;
    font-size: 12px;
  }
  /* Mobile hero: match other card area width (container default 92%) */
  .hero-card { 
    padding: 40px 24px 48px; 
    gap: 32px;
    margin: 0;
    border-radius: 20px;
  }
  .hero-content { max-width: 100%; }
  .hero-title { 
    font-size: clamp(28px, 8vw, 44px); 
    text-align: left;
    line-height: 1.15;
    margin-bottom: 16px;
  }
  .hero-sub { 
    font-size: 15px;
    line-height: 1.5;
    max-width: 100%;
    margin-bottom: 28px;
    text-align: left;
  }
  .hero-cta { 
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .hero-cta .btn { width: 100%; max-width: 280px; justify-content: flex-start; }
  .hero-media { margin-top: 8px; }
  /* CTA: stack button under text on mobile */
  .cta { flex-direction: column; align-items: flex-start; gap: 12px; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { width: 100%; max-width: 320px; }
  /* Footer: ensure copyright at the very bottom */
  .footer { flex-direction: column; align-items: flex-start; gap: 10px; }
  .foot-right { order: 1; }
  .foot-left { order: 2; }
  .text-demo { padding: 16px; gap: 12px; }
  .text-line { font-size: 13px; padding: 6px 10px; }
  .text-line.selected { font-size: 13px; padding: 6px 10px; }
  .explanation-bubble { padding: 12px; }
  .bubble-content { font-size: 13px; }
  .grid.features { grid-template-columns: 1fr; gap: 16px; max-width: 100%; }
  .section-head { margin-bottom: 32px; }
  .section-title { font-size: clamp(24px, 6vw, 32px); }
  .section-sub { font-size: 16px; }
  .card { padding: 24px 20px; }
  #where .card-head { align-items: flex-start; }
  .icon-list li { margin: 6px 0; }
  .kbd-demo {
    flex-direction: column;
    gap: 6px;
    padding: 8px 10px;
    align-items: flex-start;
  }
  .kbd-demo .keys { flex-wrap: wrap; }
  .kbd-demo .kbd { min-width: 24px; height: 24px; font-size: 12px; }
  .selection-demo { width: 100px; height: 32px; }
}

@media (max-width: 480px) {
  :root { --nav-height: 72px; }
  .brand-logo.lg {
    height: 28px;
  }
  .nav .container {
    width: 100%;
    padding: 0 12px;
  }
  .hero-card {
    padding: 32px 20px 40px;
    margin: 0;
    border-radius: 16px;
  }
  .hero-title {
    font-size: clamp(24px, 9vw, 36px);
    margin-bottom: 12px;
  }
  .hero-sub {
    font-size: 14px;
    line-height: 1.4;
    margin-bottom: 24px;
  }
  .hero-cta .btn {
    font-size: 15px;
    padding: 12px 16px;
  }
  /* Footer: stack vertically on small screens (keep order) */
  .footer { padding: 28px 0 48px; }
  .foot-right { flex-direction: column; gap: 6px; }
  .text-line {
    font-size: 12px;
    padding: 5px 8px;
  }
  .text-line.selected {
    font-size: 12px;
    padding: 5px 8px;
  }
  .explanation-bubble {
    padding: 10px;
  }
  .bubble-content {
    font-size: 12px;
  }
}

/* Text Demo Animation Styles */
.text-demo {
  transition: opacity 0.5s ease-in-out;
}

.text-demo.fade-out {
  opacity: 0;
}

.text-demo.fade-in {
  opacity: 1;
}