/* === PayTok Design System v3 — Linear/Stripe-inspired === */
:root {
  --bg-deep: #0F172A;
  --bg-card: #111D30;
  --bg-surface: #1A2744;
  --brand: #2563EB;
  --brand-bright: #3B82F6;
  --accent: #06B6D4;
  --accent-dim: rgba(6,182,212,.08);
  --success: #10B981;
  --gold: #F59E0B;
  --white: #FFFFFF;
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1E293B;
  --gray-900: #0F172A;

  --radius-xl: 24px;
  --radius: 20px;
  --radius-sm: 14px;
  --radius-pill: 9999px;

  --shadow-xs: 0 1px 2px rgba(0,0,0,.04);
  --shadow-sm: 0 4px 12px rgba(0,0,0,.04), 0 1px 3px rgba(0,0,0,.02);
  --shadow: 0 8px 30px rgba(0,0,0,.06), 0 2px 8px rgba(0,0,0,.03);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.1), 0 4px 16px rgba(0,0,0,.04);
  --shadow-xl: 0 32px 80px rgba(0,0,0,.12);

  --ease-out: cubic-bezier(.16,1,.3,1);
  --ease-spring: cubic-bezier(.34,1.56,.64,1);
  --transition: .5s var(--ease-out);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', 'Noto Sans', system-ui, sans-serif;
  color: var(--gray-700); background: var(--white);
  line-height: 1.7; -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Dark mode — default for PayTok */
body.dark,
body {
  color: rgba(255,255,255,.7);
  background: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(37,99,235,.04), transparent),
    radial-gradient(ellipse 60% 40% at 90% 80%, rgba(6,182,212,.03), transparent);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ==================== TYPOGRAPHY ==================== */
h1, .h1 { font-size: clamp(40px, 5vw, 64px); font-weight: 900; letter-spacing: -2px; line-height: 1.08; }
h2, .h2 { font-size: clamp(30px, 4vw, 48px); font-weight: 800; letter-spacing: -1px; line-height: 1.15; }
h3, .h3 { font-size: clamp(22px, 2.5vw, 32px); font-weight: 700; line-height: 1.25; }
h4, .h4 { font-size: 18px; font-weight: 700; line-height: 1.3; }
.body-lg { font-size: 18px; line-height: 1.7; color: rgba(255,255,255,.5); }
.body { font-size: 15px; line-height: 1.65; color: rgba(255,255,255,.45); }
.caption { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 2px; }

.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--brand-bright), var(--gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==================== NAV ==================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: background .4s ease, box-shadow .4s ease;
}
.nav.scrolled {
  background: rgba(15,23,42,.94); backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255,255,255,.05);
  box-shadow: 0 1px 20px rgba(0,0,0,.25);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 22px; font-weight: 800; color: var(--white);
  letter-spacing: -.5px;
}
.brand-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-size: 15px; color: var(--white); font-weight: 900;
}
.nav-links { display: flex; align-items: center; gap: 36px; list-style: none; }
.nav-links a {
  color: rgba(255,255,255,.55); font-size: 14px; font-weight: 500;
  transition: color .3s ease; position: relative;
}
.nav-links a:hover { color: var(--white); }
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; right: 0;
  height: 2px; background: var(--brand); transform: scaleX(0);
  transition: transform .35s var(--ease-out); border-radius: 2px;
}
.nav-links a:hover::after { transform: scaleX(1); }
.nav-cta {
  background: var(--brand); color: var(--white) !important;
  padding: 10px 24px !important; border-radius: var(--radius-pill) !important;
  font-weight: 600 !important; font-size: 14px !important;
  box-shadow: 0 4px 16px rgba(37,99,235,.3);
  transition: all .35s var(--ease-out);
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(37,99,235,.4) !important;
}
.nav-cta::after { display: none !important; }

.lang-switch {
  display: flex; align-items: center; gap: 2px;
  background: rgba(255,255,255,.06); border-radius: var(--radius-pill); padding: 3px;
}
.lang-btn {
  padding: 6px 14px; border-radius: var(--radius-pill); border: none;
  background: transparent; color: rgba(255,255,255,.45);
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: all .3s ease;
}
.lang-btn.active { background: rgba(255,255,255,.12); color: var(--white); }

/* ==================== HERO ==================== */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 140px 32px 120px;
  position: relative; overflow: hidden;
  background:
    radial-gradient(ellipse 70% 50% at 20% 10%, rgba(37,99,235,.08) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(6,182,212,.05) 0%, transparent 50%),
    var(--bg-deep);
}
.hero-grid {
  max-width: 1280px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px;
  align-items: center; width: 100%;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(37,99,235,.1); border: 1px solid rgba(37,99,235,.15);
  padding: 6px 18px; border-radius: var(--radius-pill);
  font-size: 13px; color: var(--brand-bright); font-weight: 600;
  margin-bottom: 28px; letter-spacing: .5px;
}
.hero h1 { color: var(--white); margin-bottom: 24px; max-width: 540px; }
.hero-desc {
  font-size: 18px; color: rgba(255,255,255,.45);
  line-height: 1.75; margin-bottom: 40px; max-width: 480px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero Mockup */
.hero-mockup { position: relative; display: flex; justify-content: center; align-items: center; }
.mockup-main {
  width: 520px; height: 340px;
  background: linear-gradient(155deg, #1E293B, #0F172A);
  border-radius: var(--radius-xl); border: 1px solid rgba(255,255,255,.08);
  box-shadow: 0 30px 80px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.04);
  position: relative; overflow: hidden; padding: 20px 24px;
  display: flex; flex-direction: column; gap: 14px;
}
.mockup-dots { display: flex; gap: 8px; }
.mockup-dots span { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.15); }
.mockup-dots span:first-child { background: var(--brand); }
.mockup-row { display: flex; gap: 12px; }
.mockup-sidebar {
  width: 100px; background: rgba(255,255,255,.03);
  border-radius: var(--radius-sm); padding: 12px 10px;
  display: flex; flex-direction: column; gap: 8px;
}
.mockup-sidebar .item {
  padding: 8px 10px; border-radius: 8px;
  font-size: 11px; color: rgba(255,255,255,.3); font-weight: 500;
}
.mockup-sidebar .item.active {
  background: rgba(37,99,235,.2); color: var(--brand-bright);
}
.mockup-content {
  flex: 1; background: rgba(255,255,255,.02);
  border-radius: var(--radius-sm); padding: 14px;
  display: flex; flex-direction: column; gap: 10px;
}
.mockup-bar {
  height: 6px; background: rgba(255,255,255,.08); border-radius: 3px; width: 60%;
}
.mockup-bar.short { width: 35%; }
.mockup-chart {
  display: flex; gap: 6px; align-items: flex-end; height: 60px;
}
.mockup-chart .col {
  flex: 1; background: linear-gradient(180deg, var(--brand), rgba(37,99,235,.2));
  border-radius: 4px 4px 0 0;
}
.mockup-chart .col:nth-child(1) { height: 100%; }
.mockup-chart .col:nth-child(2) { height: 70%; }
.mockup-chart .col:nth-child(3) { height: 85%; }
.mockup-chart .col:nth-child(4) { height: 45%; }
.mockup-chart .col:nth-child(5) { height: 60%; }
.mockup-kpi {
  display: flex; gap: 10px;
}
.mockup-kpi .kpi {
  flex: 1; background: rgba(255,255,255,.03); border-radius: 10px; padding: 10px 12px;
}
.mockup-kpi .kpi .num { font-size: 18px; font-weight: 800; color: var(--brand-bright); }
.mockup-kpi .kpi .lbl { font-size: 10px; color: rgba(255,255,255,.25); margin-top: 2px; }
.mockup-float {
  position: absolute;
  background: var(--white); border-radius: var(--radius);
  padding: 14px 18px; box-shadow: 0 16px 48px rgba(0,0,0,.3);
}
.mockup-float.top-right {
  top: 16px; right: -30px;
  font-size: 13px; color: var(--gray-700); font-weight: 600;
  display: flex; align-items: center; gap: 8px;
}
.mockup-float.top-right .dot { width: 8px; height: 8px; background: var(--success); border-radius: 50%; }
.mockup-float.bottom-left {
  bottom: 20px; left: -40px;
  font-size: 13px; color: var(--gray-600);
}
.mockup-float.bottom-left .big { font-size: 22px; font-weight: 800; color: var(--gray-800); display: block; }

/* ==================== SECTION RHYTHM ==================== */
.section { padding: 120px 32px; }
.section-dark { background: var(--bg-deep); color: var(--white); }
.section-slate { background: #111827; }
.section-gray { background: var(--gray-50); }
.section-white { background: var(--white); }
.section-gradient {
  background: linear-gradient(180deg, var(--bg-deep), #111827, var(--bg-deep));
}

.section-inner { max-width: 1280px; margin: 0 auto; }

.section-label {
  font-size: 13px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 2.5px; color: var(--brand-bright); margin-bottom: 16px;
  display: inline-block;
}
.section-title { margin-bottom: 16px; color: var(--gray-800); }
.section-dark .section-title,
.section-slate .section-title { color: var(--white); }
.section-desc {
  font-size: 18px; color: var(--gray-500);
  max-width: 640px; line-height: 1.75;
}
.section-dark .section-desc,
.section-slate .section-desc { color: rgba(255,255,255,.45); }

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 15px 32px; border-radius: var(--radius-pill);
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: all .4s var(--ease-out); border: none;
  white-space: nowrap;
  min-height: 50px; min-width: 50px;
}
.btn-primary {
  background: var(--brand); color: var(--white);
  box-shadow: 0 4px 16px rgba(37,99,235,.3);
}
.btn-primary:hover {
  background: #1D4ED8;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(37,99,235,.4);
}
.btn-white {
  background: var(--white); color: var(--gray-800);
  box-shadow: var(--shadow);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline {
  background: transparent; color: var(--white);
  border: 1.5px solid rgba(255,255,255,.15);
}
.btn-outline:hover {
  border-color: rgba(255,255,255,.35);
  background: rgba(255,255,255,.03);
  transform: translateY(-2px);
}
.btn-outline-dark {
  background: transparent; color: var(--gray-600);
  border: 1.5px solid var(--gray-300);
}
.btn-outline-dark:hover { border-color: var(--brand); color: var(--brand); }
.btn-lg { padding: 18px 40px; font-size: 17px; min-height: 56px; }

/* ==================== CARDS ==================== */
.card {
  background: var(--bg-card); border-radius: var(--radius-xl);
  padding: 36px 32px; border: 1px solid rgba(255,255,255,.05);
  transition: all .5s var(--ease-out);
  position: relative; overflow: hidden;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(37,99,235,.15);
  box-shadow: var(--shadow-lg);
}
.card-light {
  background: var(--white); border-radius: var(--radius-xl);
  padding: 36px 32px; border: 1px solid var(--gray-100);
  transition: all .5s var(--ease-out);
}
.card-light:hover {
  transform: translateY(-6px);
  border-color: transparent;
  box-shadow: var(--shadow-lg);
}

/* ==================== STATS ROW ==================== */
.stats-row {
  display: flex; justify-content: center; gap: 60px; flex-wrap: wrap;
  padding: 48px 0;
  border-top: 1px solid rgba(255,255,255,.04);
  border-bottom: 1px solid rgba(255,255,255,.04);
}
.stat-item { text-align: center; }
.stat-num {
  font-size: clamp(28px, 4vw, 40px); font-weight: 900;
  background: linear-gradient(135deg, var(--brand-bright), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 14px; color: rgba(255,255,255,.35); margin-top: 6px; font-weight: 500; }

/* ==================== FEATURES GRID ==================== */
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 28px; margin-top: 64px;
}
.feature-card {
  background: var(--bg-card); border-radius: var(--radius-xl);
  padding: 36px 28px; border: 1px solid rgba(255,255,255,.04);
  transition: all .5s var(--ease-out);
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: linear-gradient(90deg, var(--brand), var(--accent));
  transform: scaleX(0); transition: transform .5s var(--ease-out);
  border-radius: 3px;
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(37,99,235,.12);
  box-shadow: var(--shadow-lg);
}
.feature-icon {
  width: 56px; height: 56px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(37,99,235,.12), rgba(6,182,212,.08));
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; margin-bottom: 24px;
}
.feature-card h3 { font-size: 19px; font-weight: 700; color: var(--white); margin-bottom: 6px; }
.feature-card .feature-tagline { font-size: 13px; color: var(--brand-bright); font-weight: 600; margin-bottom: 16px; }
.feature-card .feature-bullets { list-style: none; margin: 0; padding: 0; }
.feature-card .feature-bullets li {
  font-size: 14px; color: rgba(255,255,255,.5); line-height: 1.65;
  padding: 5px 0; display: flex; gap: 8px; align-items: flex-start;
}
.feature-card .feature-bullets li::before { content: '▸'; color: var(--accent); font-size: 12px; margin-top: 2px; flex-shrink: 0; }

/* Feature highlight banner */
.feature-highlight {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 48px;
}
.feature-highlight-card {
  background: linear-gradient(155deg, rgba(37,99,235,.06), rgba(6,182,212,.03));
  border: 1px solid rgba(37,99,235,.1);
  border-radius: var(--radius-xl); padding: 44px 40px;
  transition: all .5s var(--ease-out);
}
.feature-highlight-card:hover {
  border-color: rgba(37,99,235,.2);
  box-shadow: 0 16px 48px rgba(37,99,235,.08);
}
.feature-highlight-card .hl-badge {
  display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; background: rgba(37,99,235,.15); color: var(--brand-bright);
  padding: 4px 14px; border-radius: var(--radius-pill); margin-bottom: 20px;
}
.feature-highlight-card h3 { font-size: 22px; font-weight: 800; color: var(--white); margin-bottom: 10px; }
.feature-highlight-card p { font-size: 15px; color: rgba(255,255,255,.45); line-height: 1.7; margin-bottom: 20px; }
.feature-highlight-card .hl-stats {
  display: flex; gap: 28px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.05);
}
.feature-highlight-card .hl-stat .val { font-size: 24px; font-weight: 900; color: var(--accent); }
.feature-highlight-card .hl-stat .lbl { font-size: 12px; color: rgba(255,255,255,.35); margin-top: 2px; }

/* ==================== KPI SECTION ==================== */
.kpi-section {
  background: linear-gradient(155deg, rgba(37,99,235,.08), rgba(6,182,212,.04), rgba(15,23,42,.5));
  border-top: 1px solid rgba(255,255,255,.04);
  border-bottom: 1px solid rgba(255,255,255,.04);
  padding: 56px 32px;
}
.kpi-grid {
  max-width: 1280px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.kpi-card {
  text-align: center; padding: 32px 20px;
  background: rgba(255,255,255,.015); border-radius: var(--radius-xl);
  border: 1px solid rgba(255,255,255,.04);
  transition: all .4s var(--ease-out);
}
.kpi-card:hover { border-color: rgba(37,99,235,.15); transform: translateY(-3px); }
.kpi-num {
  font-size: clamp(32px, 4vw, 48px); font-weight: 900;
  background: linear-gradient(135deg, var(--brand-bright), var(--accent), var(--gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; line-height: 1.1;
}
.kpi-desc {
  font-size: 15px; color: rgba(255,255,255,.4);
  margin-top: 8px; font-weight: 500;
}
.kpi-sub {
  font-size: 12px; color: rgba(255,255,255,.18);
  margin-top: 4px;
}

/* ==================== CUSTOMER CASES ==================== */
.case-section { padding: 120px 32px; background: linear-gradient(180deg, #0F172A 0%, #111827 50%, #0F172A 100%); }
.case-section .section-title { color: var(--white); }
.case-section .section-desc { color: rgba(255,255,255,.45); }
.case-grid {
  max-width: 1280px; margin: 56px auto 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.case-card {
  background: rgba(255,255,255,.02); border-radius: var(--radius-xl);
  padding: 0; overflow: hidden;
  border: 1px solid rgba(255,255,255,.05);
  transition: all .5s var(--ease-out);
}
.case-card:hover { transform: translateY(-6px); border-color: rgba(37,99,235,.2); box-shadow: var(--shadow-lg); }
.case-img {
  height: 180px; background: linear-gradient(135deg, rgba(37,99,235,.08), rgba(6,182,212,.04));
  display: flex; align-items: center; justify-content: center;
  font-size: 56px; position: relative; overflow: hidden;
}
.case-img .industry-tag {
  position: absolute; top: 14px; left: 14px;
  background: rgba(15,23,42,.85); color: var(--white);
  padding: 4px 12px; border-radius: var(--radius-pill);
  font-size: 11px; font-weight: 700; backdrop-filter: blur(8px);
}
.case-body { padding: 28px 24px 24px; }
.case-body h3 { font-size: 18px; font-weight: 800; color: var(--white); margin-bottom: 4px; }
.case-body .case-loc { font-size: 13px; color: var(--brand-bright); margin-bottom: 14px; }
.case-stats { display: flex; gap: 20px; margin-bottom: 18px; }
.case-stat .val { font-size: 20px; font-weight: 800; color: var(--accent); }
.case-stat .lbl { font-size: 11px; color: rgba(255,255,255,.3); margin-top: 2px; }
.case-body .case-quote {
  font-size: 14px; color: rgba(255,255,255,.4); line-height: 1.7;
  font-style: italic; border-left: 3px solid var(--brand); padding-left: 14px;
}

/* Logo wall */
.logo-wall {
  max-width: 1280px; margin: 56px auto 0;
  display: flex; justify-content: center; align-items: center;
  gap: 40px; flex-wrap: wrap; padding: 40px 0;
  border-top: 1px solid rgba(255,255,255,.04);
}
.logo-wall .logo-item {
  font-size: 14px; font-weight: 700; color: rgba(255,255,255,.15);
  letter-spacing: 1px; text-transform: uppercase;
  transition: all .3s ease;
}
.logo-wall .logo-item:hover { color: rgba(255,255,255,.4); }
.steps-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 40px; margin-top: 64px;
}
.step-card { text-align: center; position: relative; }
.step-num {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: var(--white); font-size: 24px; font-weight: 900;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 24px; box-shadow: 0 8px 32px rgba(37,99,235,.25);
  transition: transform .4s var(--ease-spring);
}
.step-card:hover .step-num { transform: scale(1.08); }
.step-card h3 { font-size: 18px; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.step-card p { font-size: 15px; color: rgba(255,255,255,.45); line-height: 1.65; }

/* ==================== PRODUCT SHOWCASE ==================== */
.showcase {
  padding: 120px 32px;
  background: linear-gradient(180deg, var(--bg-deep) 0%, #111827 50%, var(--bg-deep) 100%);
  text-align: center;
  overflow: hidden;
}
.showcase-device {
  max-width: 900px; margin: 60px auto 0;
  position: relative;
}
.showcase-frame {
  background: linear-gradient(155deg, #1E293B, #0F172A);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255,255,255,.06);
  box-shadow: 0 30px 100px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.03);
  padding: 16px 20px;
}
.showcase-frame .chrome-dots { display: flex; gap: 6px; margin-bottom: 14px; }
.showcase-frame .chrome-dots span { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.1); }
.showcase-frame .chrome-dots span:first-child { background: var(--brand); }
.showcase-content {
  display: grid; grid-template-columns: 180px 1fr 200px;
  gap: 16px; min-height: 300px;
}
.showcase-nav {
  background: rgba(255,255,255,.02); border-radius: var(--radius);
  padding: 16px 12px; display: flex; flex-direction: column; gap: 6px;
}
.showcase-nav .nav-item {
  padding: 10px 14px; border-radius: 10px;
  font-size: 13px; color: rgba(255,255,255,.3); font-weight: 500; text-align: left;
  transition: all .3s ease;
}
.showcase-nav .nav-item.active {
  background: rgba(37,99,235,.15); color: var(--brand-bright);
}
.showcase-main {
  background: rgba(255,255,255,.015); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 12px;
}
.showcase-table {
  width: 100%; text-align: left; font-size: 12px;
}
.showcase-table th { color: rgba(255,255,255,.2); font-weight: 500; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1px; }
.showcase-table td { color: rgba(255,255,255,.5); padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,.03); }
.showcase-table .hl { color: var(--brand-bright); font-weight: 700; }
.showcase-side {
  display: flex; flex-direction: column; gap: 10px;
}
.showcase-kpi {
  background: rgba(255,255,255,.02); border-radius: var(--radius-sm);
  padding: 16px; text-align: center;
}
.showcase-kpi .num { font-size: 24px; font-weight: 800; color: var(--accent); }
.showcase-kpi .lbl { font-size: 11px; color: rgba(255,255,255,.2); margin-top: 4px; }

/* ==================== PRICING ==================== */
.pricing-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 28px; margin-top: 60px;
}
.price-card {
  background: var(--bg-card); border-radius: var(--radius-xl);
  padding: 44px 36px; border: 1px solid rgba(255,255,255,.05);
  transition: all .5s var(--ease-out); position: relative;
}
.price-card:hover { transform: translateY(-4px); border-color: rgba(37,99,235,.12); }
.price-card.featured {
  border-color: rgba(37,99,235,.2);
  box-shadow: 0 0 0 2px rgba(37,99,235,.12), 0 24px 64px rgba(37,99,235,.1);
  transform: scale(1.03);
}
.price-card.featured:hover { transform: scale(1.03) translateY(-4px); }
.price-card.featured::before {
  content: '⭐ PHỔ BIẾN NHẤT';
  position: absolute; top: -15px; left: 50%; transform: translateX(-50%);
  background: var(--brand); color: var(--white); font-size: 12px; font-weight: 700;
  padding: 6px 22px; border-radius: var(--radius-pill); letter-spacing: .5px;
}
html[data-lang="zh"] .price-card.featured::before { content: '⭐ 最受欢迎'; }
.price-card h3 { font-size: 22px; font-weight: 800; color: var(--white); margin-bottom: 4px; }
.price-tag { font-size: 14px; color: rgba(255,255,255,.35); margin-bottom: 28px; }
.price-amount {
  font-size: 48px; font-weight: 900; margin-bottom: 28px;
  background: linear-gradient(135deg, var(--accent), var(--brand-bright), var(--gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.price-card ul { list-style: none; margin-bottom: 36px; }
.price-card ul li {
  padding: 10px 0; font-size: 14px; color: rgba(255,255,255,.5);
  border-bottom: 1px solid rgba(255,255,255,.03);
  display: flex; align-items: center; gap: 10px;
}
.price-card ul li::before { content: '✓'; color: var(--accent); font-weight: 700; font-size: 14px; }
.price-card .btn { width: 100%; justify-content: center; }

/* ==================== COMPARISON TABLE ==================== */
.comp-table {
  width: 100%; border-collapse: separate; border-spacing: 0;
  margin-top: 48px; border-radius: var(--radius); overflow: hidden;
}
.comp-table thead th {
  padding: 20px 24px; text-align: left;
  font-size: 13px; font-weight: 700; color: rgba(255,255,255,.35);
  background: rgba(255,255,255,.02);
  border-bottom: 2px solid rgba(255,255,255,.04);
  text-transform: uppercase; letter-spacing: 1px;
}
.comp-table thead th.highlight {
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: var(--white); border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
.comp-table tbody td {
  padding: 16px 24px; font-size: 14px; color: rgba(255,255,255,.45);
  border-bottom: 1px solid rgba(255,255,255,.03);
}
.comp-table tbody td:first-child { font-weight: 600; color: rgba(255,255,255,.7); }
.comp-table tbody td.highlight { background: rgba(37,99,235,.03); }
.comp-table .check { color: var(--success); font-weight: 700; }
.comp-table .cross { color: rgba(255,255,255,.1); }

/* ==================== FAQ ==================== */
.faq-list { max-width: 800px; margin: 56px auto 0; }
.faq-item {
  border-bottom: 1px solid rgba(255,255,255,.04);
  padding: 28px 0; cursor: pointer;
}
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 17px; font-weight: 700; color: var(--white);
}
.faq-q .arrow {
  font-size: 20px; color: rgba(255,255,255,.25);
  transition: transform .5s var(--ease-out), color .3s;
}
.faq-item.open .faq-q .arrow {
  transform: rotate(45deg); color: var(--brand-bright);
}
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height .6s var(--ease-out), padding .6s var(--ease-out);
  font-size: 15px; color: rgba(255,255,255,.45); line-height: 1.75;
}
.faq-item.open .faq-a { max-height: 300px; padding-top: 18px; }

/* ==================== CTA ==================== */
.cta {
  background: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(37,99,235,.1) 0%, transparent 70%);
  text-align: center; padding: 120px 32px;
}
.cta h2 { color: var(--white); margin-bottom: 20px; }
.cta p {
  font-size: 18px; color: rgba(255,255,255,.45);
  max-width: 540px; margin: 0 auto 40px; line-height: 1.75;
}

/* ==================== FOOTER ==================== */
.footer {
  background: var(--bg-deep); border-top: 1px solid rgba(255,255,255,.04);
  padding: 72px 32px 36px;
}
.footer-grid {
  max-width: 1280px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 56px;
}
.footer-brand { font-size: 22px; font-weight: 800; color: var(--white); margin-bottom: 10px; }
.footer-desc { font-size: 14px; color: rgba(255,255,255,.3); line-height: 1.7; max-width: 280px; }
.footer h4 {
  font-size: 13px; font-weight: 700; color: rgba(255,255,255,.4);
  margin-bottom: 18px; text-transform: uppercase; letter-spacing: 1.5px;
}
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 10px; }
.footer ul li a {
  font-size: 14px; color: rgba(255,255,255,.3);
  transition: color .3s ease;
}
.footer ul li a:hover { color: var(--brand-bright); }
.footer-bottom {
  max-width: 1280px; margin: 40px auto 0; padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,.03);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
  font-size: 13px; color: rgba(255,255,255,.15);
}
.footer-bottom a { color: rgba(255,255,255,.2); }
.footer-bottom a:hover { color: rgba(255,255,255,.4); }

/* ==================== STICKY CTA (mobile) ==================== */
.sticky-cta {
  display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 999;
  background: rgba(15,23,42,.96); backdrop-filter: blur(24px);
  padding: 14px 24px; border-top: 1px solid rgba(255,255,255,.05);
}
.sticky-cta .btn { width: 100%; justify-content: center; }

/* ==================== FOUC ==================== */
html:not(.i18n-ready) [data-i18n] { visibility: hidden; }

/* ==================== BILINGUAL ==================== */
[data-zh] { display: none !important; }
[data-lang="vi"] [data-zh] { display: none !important; }
[data-lang="zh"] [data-vi] { display: none !important; }
[data-lang="zh"] [data-zh] { display: revert !important; }

/* ==================== SCROLL ANIMATIONS ==================== */
.fade-up {
  opacity: 0; transform: translateY(40px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up:nth-child(2) { transition-delay: .12s; }
.fade-up:nth-child(3) { transition-delay: .24s; }
.fade-up:nth-child(4) { transition-delay: .36s; }
.fade-up:nth-child(5) { transition-delay: .48s; }
.fade-up:nth-child(6) { transition-delay: .6s; }

/* ==================== MOBILE ==================== */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; z-index: 1001; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--white); border-radius: 2px; transition: .35s var(--ease-out); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Mobile nav drawer */
.mobile-nav {
  display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15,23,42,.98); backdrop-filter: blur(30px);
  z-index: 999; flex-direction: column; align-items: center;
  justify-content: center; gap: 24px; padding: 48px 32px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 20px; font-weight: 700; color: var(--white);
  padding: 12px 0; text-align: center; transition: color .3s;
}
.mobile-nav a:hover { color: var(--brand-bright); }
.mobile-nav .nav-mobile-cta {
  background: var(--brand); color: var(--white);
  padding: 14px 36px; border-radius: var(--radius-pill); margin-top: 12px;
  font-size: 16px;
}

/* ==================== TABLET (≤1024px) ==================== */
@media (max-width: 1024px) {
  .hero { min-height: auto; padding: 120px 28px 80px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero h1 { max-width: 100%; font-size: clamp(32px, 5vw, 50px); }
  .hero-desc { max-width: 520px; margin-left: auto; margin-right: auto; }
  .hero-btns { justify-content: center; }
  .hero-mockup { order: -1; margin: 0 auto; }
  .mockup-main { width: 100%; max-width: 400px; height: 240px; padding: 14px 16px; gap: 8px; }
  .mockup-float { display: none; }
  .mockup-sidebar { display: none; }
  .mockup-kpi .kpi .num { font-size: 14px; }
  .nav-links { gap: 20px; }

  .stats-row { padding: 36px 0; gap: 32px; }
  .stat-num { font-size: 28px; }
  .stat-label { font-size: 12px; }

  .features-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .feature-card { padding: 28px 24px; }
  .feature-highlight { grid-template-columns: 1fr; }

  .kpi-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .kpi-card { padding: 24px 16px; }

  .case-grid { grid-template-columns: 1fr; max-width: 480px; margin-left: auto; margin-right: auto; }

  .steps-grid { grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
  .step-card h3 { font-size: 16px; }

  .pricing-grid { grid-template-columns: 1fr; max-width: 440px; margin-left: auto; margin-right: auto; gap: 24px; }
  .price-card.featured { transform: none; }
  .price-card.featured:hover { transform: translateY(-4px); }
  .price-card.featured::before { top: -12px; font-size: 11px; padding: 5px 16px; }

  .showcase { padding: 80px 20px; }
  .showcase-content { grid-template-columns: 1fr; }
  .showcase-nav { display: none; }
  .showcase-side { display: none; }
  .showcase-frame { padding: 10px 14px; }
  .showcase-main { padding: 14px; }

  .faq-list { max-width: 100%; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer { padding: 56px 28px 28px; }
}

/* ==================== PHONE (≤640px) ==================== */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-inner { height: 60px; padding: 0 16px; }
  .nav-brand { font-size: 18px; }
  .brand-icon { width: 32px; height: 32px; border-radius: 10px; font-size: 13px; }

  .hero { padding: 100px 16px 60px; }
  .hero h1 { font-size: clamp(26px, 8vw, 36px); }
  .hero-badge { font-size: 11px; padding: 5px 14px; margin-bottom: 20px; }
  .hero-desc { font-size: 15px; margin-bottom: 28px; }
  .hero-btns { flex-direction: column; align-items: center; }
  .hero-btns .btn { width: 100%; max-width: 300px; justify-content: center; }
  .btn-lg { padding: 14px 28px; font-size: 15px; min-height: 48px; }
  .mockup-main { max-width: 100%; height: 220px; border-radius: var(--radius); }
  .mockup-kpi { gap: 6px; }
  .mockup-kpi .kpi { padding: 8px 10px; }
  .mockup-kpi .kpi .num { font-size: 13px; }
  .mockup-chart { height: 40px; }

  .stats-row { flex-direction: column; gap: 20px; padding: 32px 16px; }
  .stat-num { font-size: 24px; }
  .stat-label { font-size: 13px; }

  .section { padding: 64px 16px; }

  .kpi-section { padding: 40px 16px; }
  .kpi-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .kpi-card { padding: 20px 14px; }
  .kpi-num { font-size: 28px; }
  .kpi-desc { font-size: 13px; }

  .case-section { padding: 64px 16px; }
  .case-grid { grid-template-columns: 1fr; }
  .case-img { height: 140px; font-size: 40px; }
  .logo-wall { gap: 20px; }
  .section-title { font-size: clamp(24px, 6vw, 32px); }
  .section-desc { font-size: 15px; }

  .features-grid { grid-template-columns: 1fr; gap: 16px; }
  .feature-card { padding: 24px 20px; }
  .feature-highlight-card { padding: 28px 24px; }
  .feature-highlight-card .hl-stats { flex-wrap: wrap; gap: 16px; }
  .feature-highlight-card .hl-stat .val { font-size: 20px; }

  .steps-grid { grid-template-columns: 1fr; gap: 32px; }
  .step-num { width: 56px; height: 56px; font-size: 20px; margin-bottom: 16px; }
  .step-card h3 { font-size: 17px; }

  .showcase { padding: 64px 16px; }
  .showcase-device { margin-top: 36px; }
  .showcase-frame { padding: 8px 10px; border-radius: var(--radius); }
  .showcase-main { padding: 10px; gap: 8px; }
  .showcase-table { font-size: 11px; }
  .showcase-table th { font-size: 9px; }
  .showcase-table td { padding: 4px 0; }

  .pricing-grid { gap: 20px; }
  .price-card { padding: 32px 24px; }
  .price-amount { font-size: 38px; }

  .faq-item { padding: 20px 0; }
  .faq-q { font-size: 15px; }
  .faq-a { font-size: 14px; }

  .cta { padding: 80px 20px; }
  .cta h2 { font-size: clamp(24px, 6vw, 32px); }
  .cta p { font-size: 15px; }
  .cta .btn { width: 100%; max-width: 320px; }

  .footer { padding: 48px 20px 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; text-align: center; }
  .footer-brand { justify-content: center; display: flex; align-items: center; gap: 10px; }
  .footer-desc { max-width: 100%; margin: 0 auto; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 8px; font-size: 12px; }

  .comp-table { font-size: 11px; }
  .comp-table thead th { padding: 10px 8px; font-size: 10px; }
  .comp-table tbody td { padding: 10px 8px; font-size: 12px; }

  .sticky-cta { display: block; padding: 10px 16px; }
  .sticky-cta .btn { min-height: 44px; font-size: 14px; }

  .lang-switch { padding: 2px; }
  .lang-btn { padding: 5px 10px; font-size: 12px; }
}