/* ============================================================
   DESIGN SYSTEM — ValueQuote & SeedLaunch
   ============================================================
   Fonts: Sora (headings), DM Sans (body), JetBrains Mono (code)
   Spacing: 8px base system
   Easing: cubic-bezier(0.16, 1, 0.3, 1)
   Colors: Warm paper tone with visible shadows for depth
   Background: Warm cream with subtle warm gradients
   ============================================================ */

/* --- Fonts --- */
    /* Self-hosted fonts */
    @font-face {
      font-family: 'Sora';
      src: url('/fonts/Sora-400.ttf') format('truetype');
      font-weight: 400;
      font-style: normal;
      font-display: swap;
    }
    @font-face {
      font-family: 'Sora';
      src: url('/fonts/Sora-500.ttf') format('truetype');
      font-weight: 500;
      font-style: normal;
      font-display: swap;
    }
    @font-face {
      font-family: 'Sora';
      src: url('/fonts/Sora-600.ttf') format('truetype');
      font-weight: 600;
      font-style: normal;
      font-display: swap;
    }
    @font-face {
      font-family: 'Sora';
      src: url('/fonts/Sora-700.ttf') format('truetype');
      font-weight: 700;
      font-style: normal;
      font-display: swap;
    }
    @font-face {
      font-family: 'Sora';
      src: url('/fonts/Sora-800.ttf') format('truetype');
      font-weight: 800;
      font-style: normal;
      font-display: swap;
    }
    @font-face {
      font-family: 'DM Sans';
      src: url('/fonts/DMSans-400.ttf') format('truetype');
      font-weight: 400;
      font-style: normal;
      font-display: swap;
    }
    @font-face {
      font-family: 'DM Sans';
      src: url('/fonts/DMSans-500.ttf') format('truetype');
      font-weight: 500;
      font-style: normal;
      font-display: swap;
    }
    @font-face {
      font-family: 'DM Sans';
      src: url('/fonts/DMSans-600.ttf') format('truetype');
      font-weight: 600;
      font-style: normal;
      font-display: swap;
    }
    @font-face {
      font-family: 'DM Sans';
      src: url('/fonts/DMSans-700.ttf') format('truetype');
      font-weight: 700;
      font-style: normal;
      font-display: swap;
    }
@font-face {
  font-family: 'JetBrains Mono';
  src: local('JetBrains Mono'), local('JetBrains Mono Regular'), local('Consolas'), local('monospace');
  font-weight: 400 600;
  font-display: swap;
}

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

:root {
  --color-bg: #FFFFFF;
  --color-bg-alt: #0F172A;
  --color-bg-card: #FFFFFF;
  --color-bg-card-hover: #F8FAFC;
  --color-surface: #F1F5F9;
  --color-border: #E2E8F0;
  --color-border-hover: #CBD5E1;

  --color-text: #0F172A;
  --color-text-dim: #475569;
  --color-text-muted: #94A3B8;

  --color-text-on-dark: #F8FAFC;
  --color-text-on-dark-dim: #CBD5E1;
  --color-text-on-dark-muted: #64748B;

  --color-accent: #3B82F6;
  --color-accent-hover: #2563EB;
  --color-accent-glow: rgba(59, 130, 246, 0.15);

  --color-cta: #3B82F6;
  --color-cta-hover: #2563EB;
  --color-cta-text: #FFFFFF;

  --color-orange-dim: rgba(255, 149, 0, 0.08);
  --color-blue-dim: rgba(59, 130, 246, 0.1);

  --color-success: #22C55E;
  --color-error: #EF4444;

  --font-heading: 'Sora', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-code: 'JetBrains Mono', monospace;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-7: 56px;
  --space-8: 64px;
  --space-10: 80px;
  --space-12: 96px;
  --space-14: 112px;
  --space-16: 128px;
  --space-20: 160px;

  --content-width: 65ch;
  --container-width: 1280px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-base: 200ms;
  --duration-slow: 400ms;
}

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

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(ellipse 80% 60% at 10% 10%, oklch(0.45 0.15 260 / 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 20%, oklch(0.4 0.12 270 / 0.10) 0%, transparent 50%),
    radial-gradient(ellipse 70% 40% at 50% 80%, oklch(0.78 0.04 30 / 0.10) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 20% 70%, oklch(0.72 0.04 280 / 0.09) 0%, transparent 40%);
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
  opacity: 0.05;
  pointer-events: none;
}

   .grid-lines {
     position: fixed;
     inset: 0;
     z-index: -1;
     background-image:
       linear-gradient(to right, oklch(0 0 0 / 0.08) 1px, transparent 1px),
       linear-gradient(to bottom, oklch(0 0 0 / 0.08) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1.08; }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); font-weight: 700; letter-spacing: -0.025em; }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); font-weight: 600; }

p { max-width: var(--content-width); margin-bottom: var(--space-3); }

a { color: var(--color-accent); text-decoration: none; transition: color var(--duration-fast) var(--ease-out); }
a:hover { color: var(--color-accent-hover); }

.container { width: min(92%, var(--container-width)); margin: 0 auto; padding: 0 var(--space-2); }

.section-label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: oklch(0.7 0.2 220);
  margin-bottom: var(--space-3);
  display: block;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.625rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  text-decoration: none;
  border: none;
  line-height: 1.3;
  white-space: nowrap;
}

.btn-lg { padding: 0.875rem 1.75rem; font-size: 1.0625rem; }

.btn-primary { background: var(--color-cta); color: var(--color-cta-text); }
.btn-primary:hover { background: var(--color-cta-hover); transform: translateY(-1px); box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3); }

.btn-secondary { background: transparent; color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-bg-card); border-color: var(--color-border-hover); transform: translateY(-1px); }

.btn-accent { background: var(--color-accent); color: #FFFFFF; }
.btn-accent:hover { background: var(--color-accent-hover); transform: translateY(-1px); box-shadow: 0 4px 20px var(--color-accent-glow); }

.btn-disabled { background: var(--color-surface); color: var(--color-text-muted); cursor: not-allowed; pointer-events: none; opacity: 0.5; }

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: var(--space-3) 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid var(--color-border);
}
.nav .container { display: flex; align-items: center; justify-content: space-between; }

.nav-logo { font-family: var(--font-heading); font-size: 1.375rem; font-weight: 800; color: var(--color-text); letter-spacing: -0.03em; }
.nav-logo span { color: var(--color-accent); }

.nav-links { display: flex; align-items: center; gap: var(--space-5); list-style: none; }
.nav-links a { font-size: 0.875rem; font-weight: 500; color: var(--color-text-dim); text-decoration: none; }
.nav-links a:hover { color: var(--color-text); }
.nav-links .btn-nav { background: #2563eb; color: #fff !important; padding: 8px 20px !important; border-radius: 8px; font-weight: 600; }
.nav-links .btn-nav:hover { background: #1d4ed8; color: #fff !important; }
.nav-links a.nav-zh {
  background: rgba(59, 130, 246, 0.08);
  color: #3B82F6;
  padding: 0.4rem 0.85rem;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.8125rem;
  border: 1px solid rgba(59, 130, 246, 0.2);
  transition: all 0.2s ease;
}
.nav-links a.nav-zh:hover {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.35);
  color: #2563EB;
}

/* ======================== HERO ======================== */
.hero {
  padding: var(--space-14) 0 var(--space-8);
  position: relative;
  text-align: center;
  background: linear-gradient(180deg, #EFF6FF 0%, #FFFFFF 100%);
}
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

/* --- 1. 顶部标题区 --- */
.hero-top {
  max-width: 720px;
  margin: 0 auto var(--space-6);
}

.hero-headline {
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero-headline .hh-line-1 {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  color: var(--color-text-dim);
  margin-bottom: 4px;
}

.hero-headline .hh-line-2 {
  display: block;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.03em;
}

.hero-headline .hh-line-2 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--color-accent), #7C3AED);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--color-text-dim);
  line-height: 1.65;
  max-width: 60ch;
  margin: var(--space-4) auto 0;
}

/* --- 2. 三列梯度蓝卡片 --- */
.hero-cards-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1050px;
  margin: 0 auto var(--space-6);
}

/* ===== Responsive — Mobile < 640px ===== */
@media (max-width: 640px) {
  .hero { padding: var(--space-8) 16px var(--space-6); }
  .hero-top { max-width: 100%; }
  .hero-headline .hh-line-1 { font-size: 1rem; }
  .hero-headline .hh-line-2 { font-size: clamp(1.8rem, 10vw, 2.5rem); }
  .hero-sub { font-size: 0.9375rem; margin-top: var(--space-3); }
  .hero-cards-row { grid-template-columns: 1fr; max-width: 100%; gap: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; gap: 12px; }
  .hero-actions .btn-grad,
  .hero-actions .btn-ghost { width: 100%; text-align: center; }
  .dash-inner { padding: 16px; }
  .dash-name { font-size: 1.1rem; }
  .dash-value { font-size: 1.5rem; }
  .dash-divider { margin: 12px 0; }
  
  .trust-stats { gap: 16px; padding: 20px 16px; }
  .trust-stat strong { font-size: 1.25rem; }
  
  .demos-header h2 { font-size: 1.5rem; }
  .demos-cards-row { grid-template-columns: 1fr; gap: 16px; }
  .dc-section { padding: 12px; }
  .dc-text { font-size: 0.8125rem; }
  
  .pricing-section { padding: var(--space-8) 16px; }
  .pricing-header h2 { font-size: 1.5rem; }
  .pricing-header p { font-size: 0.9375rem; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 100%; gap: 16px; }
  .pricing-card { padding: 24px 20px; }
  .pricing-card .price { font-size: 2rem; }
  
  .faq-section { padding: var(--space-8) 16px; }
  
  .risk-section { padding: var(--space-8) 16px; }
  .risk-section h2 { font-size: 1.25rem; }
  
  section .container { padding-left: 16px; padding-right: 16px; }

  /* Hamburger menu */
  .hamburger { display: flex !important; }
  .nav-links {
    display: none;
    position: fixed;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(16px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    z-index: 99;
  }
  .nav-links.open { display: flex; }
  .nav-links .btn-nav { text-align: center; }
}

/* ===== Tablet < 1024px ===== */
@media (min-width: 641px) and (max-width: 1024px) {
  .hero { padding: var(--space-10) 24px var(--space-6); }
  .hero-cards-row { grid-template-columns: repeat(2, 1fr); max-width: 700px; }
  .hero-headline .hh-line-2 { font-size: clamp(2rem, 5vw, 3.2rem); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); max-width: 700px; gap: 20px; }
  .pricing-card:last-child { grid-column: 1 / -1; max-width: 340px; margin: 0 auto; }
  .demos-cards-row { gap: 20px; }
}
.dash-card {
  border-radius: 16px;
  padding: 2px;
  background: linear-gradient(145deg, #2563EB, #7C3AED);
  box-shadow:
    0 8px 32px rgba(37, 99, 235, 0.12),
    0 2px 8px rgba(0,0,0,0.04);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.dash-card:hover {
  transform: translateY(-4px);
  box-shadow:
    0 12px 40px rgba(37, 99, 235, 0.2),
    0 4px 12px rgba(0,0,0,0.08);
}

/* Bundle卡片用更突出的渐变边框 */
.dash-card-bundle {
  background: linear-gradient(145deg, #7C3AED, #DB2777);
}

.dash-inner {
  background: #FFFFFF;
  border-radius: 14px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  height: 100%;
}

/* 顶部：产品名+标签 */
.dash-top {
  display: flex;
  align-items: center;
  gap: 8px;
}
.dash-name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: #111827;
}
.dash-tag {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 100px;
  background: linear-gradient(135deg, #2563EB15, #7C3AED15);
  color: #5B21B6;
  margin-left: auto;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* 中间展示区 */
.dash-display {
  flex: 1;
}
.dash-label {
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #94A3B8;
  margin-bottom: 6px;
}
.dash-value {
  font-size: 1rem;
  font-weight: 700;
  color: #111827;
  line-height: 1.3;
  margin-bottom: 4px;
}
.dash-meta {
  font-size: 0.8rem;
  color: #6B7280;
  line-height: 1.4;
}

/* 分割线 */
.dash-divider {
  height: 1px;
  background: linear-gradient(90deg, #E5E7EB, #2563EB20, #E5E7EB);
  margin: 0;
}

/* 底部试用区 */
.dash-demo {
  display: flex;
  gap: 6px;
  align-items: baseline;
}
.dash-demo-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: #6B7280;
  white-space: nowrap;
}
.dash-demo-text {
  font-size: 0.75rem;
  font-style: italic;
  color: #9CA3AF;
  line-height: 1.4;
}

/* --- 3. CTA按钮区 --- */
.hero-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--space-4);
}

.btn-grad {
  background: linear-gradient(135deg, #2563EB, #7C3AED);
  color: #FFFFFF;
  padding: 14px 36px;
  border-radius: 12px;
  font-size: 1.0625rem;
  font-weight: 600;
  border: none;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.25);
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-grad:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(37, 99, 235, 0.35);
  color: #FFFFFF;
}

.btn-ghost {
  background: transparent;
  color: #4B5563;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 1.0625rem;
  font-weight: 500;
  border: 1px solid #D1D5DB;
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-ghost:hover {
  border-color: #2563EB;
  color: #2563EB;
  background: rgba(37, 99, 235, 0.04);
}


/* --- TRUST BAR --- */
.trust-bar {
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: oklch(0 0 0 / 0.03);
}

.trust-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-10);
  flex-wrap: wrap;
}

.trust-stat {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.trust-stat strong {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #2563EB, #7C3AED);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.trust-stat .trust-label {
  font-size: 0.8rem;
  color: #6B7280;
  font-weight: 500;
}

/* --- Demos / How It Works --- */
/* --- Demos / See It Work (第二页) --- */
.demos-section {
  padding: var(--space-14) 0;
  position: relative;
  background: linear-gradient(180deg, #F1F5F9 0%, #E2E8F0 100%);
}

.demos-header {
  text-align: center;
  margin-bottom: var(--space-8);
}
   .demos-header .section-label {
   }

   /* ===== Pricing (3-tier subscription) ===== */
.pricing-section { padding: var(--space-14) 0; position: relative; }
.pricing-header { text-align: center; margin-bottom: var(--space-8); }
.pricing-header h2 { margin-bottom: var(--space-2); }
.pricing-header p { color: var(--color-text-dim); font-size: 1.0625rem; max-width: 55ch; margin: 0 auto; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 960px; margin: 0 auto; }
.pricing-card {
  background: linear-gradient(145deg, #fff, #f8fafc);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  position: relative;
  transition: all 0.3s var(--ease-out);
  display: flex;
  flex-direction: column;
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.06); border-color: var(--color-border-hover); }
.pricing-card.popular { border: 2px solid var(--color-accent); box-shadow: 0 8px 32px rgba(59,130,246,0.1); }
.pricing-card .popular-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.pricing-card .name { font-family: var(--font-heading); font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.pricing-card .price { font-size: 2.75rem; font-weight: 800; margin: 12px 0 4px; letter-spacing: -0.03em; }
.pricing-card .price span { font-size: 1rem; font-weight: 400; color: var(--color-text-muted); }
.pricing-card .desc { font-size: 0.875rem; color: var(--color-text-dim); margin-bottom: 24px; min-height: 2.4em; }
.pricing-card .features { list-style: none; padding: 0; margin: 0 0 28px; text-align: left; flex: 1; }
.pricing-card .features li { padding: 10px 0; font-size: 0.875rem; border-bottom: 1px solid var(--color-border); display: flex; align-items: center; gap: 8px; }
.pricing-card .features li::before { content: "✓"; color: var(--color-success); font-weight: 700; font-size: 0.9rem; }
/* ===== Risk Reversal ===== */
.risk-section { text-align: center; padding: var(--space-10) 24px; max-width: 640px; margin: 0 auto; }
.risk-section h2 { margin-bottom: var(--space-3); }
.risk-section p { color: var(--color-text-dim); font-size: 1rem; margin: 0 auto var(--space-5); }
/* ===== Page section background alternation ===== */
.section-dark {
  background: linear-gradient(180deg, oklch(0.12 0.04 260), oklch(0.08 0.03 270));
  color: var(--color-text-on-dark);
}
.section-dark .section-label { color: oklch(0.65 0.2 220); }
.section-dark h2 { color: var(--color-text-on-dark); }
.section-dark .pricing-card {
  background: linear-gradient(145deg, #1E293B, #0F172A);
  border-color: rgba(59, 130, 246, 0.15);
}
.section-dark .pricing-card .name { color: #F1F5F9; }
.section-dark .pricing-card .price { color: #F8FAFC; }
.section-dark .pricing-card .price span { color: #64748B; }
.section-dark .pricing-card .desc { color: #94A3B8; }
.section-dark .pricing-card .features li { color: #CBD5E1; border-color: rgba(59,130,246,0.1); }
.section-dark .pricing-card.popular {
  border-color: #3B82F6;
  box-shadow: 0 0 0 1px rgba(59,130,246,0.2), 0 8px 32px rgba(59,130,246,0.08);
}
.section-dark .pricing-card .popular-badge { background: linear-gradient(135deg, #2563EB, #7C3AED); }
.section-dark .pricing-card .btn-primary {
  background: linear-gradient(135deg, #2563EB, #7C3AED);
  color: #FFFFFF;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 10px;
  border: none;
}
.section-dark .pricing-card .btn-primary:hover {
  box-shadow: 0 4px 20px rgba(37,99,235,0.3);
}

/* --- Hamburger Menu --- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 101;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #0F172A;
  border-radius: 2px;
  transition: all 0.2s ease;
}
.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); }

/* Tablet nav fix */
@media (min-width: 641px) and (max-width: 1024px) {
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 0.8rem; }
}

/* ===== DEMOS CARDS (How It Works) ===== */
.demos-cards-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.demos-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  padding: 28px 24px;
  transition: all 0.25s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.demos-card:hover {
  border-color: #2563EB;
  box-shadow: 0 8px 24px rgba(37,99,235,0.1);
  transform: translateY(-2px);
}

.dc-product-name {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #E2E8F0;
}
.dcp-name {
  font-family: 'Sora', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: #111827;
}
.dcp-tag {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 100px;
  background: linear-gradient(135deg, #2563EB15, #7C3AED15);
  color: #5B21B6;
  margin-left: auto;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.dc-section {
  padding: 12px 0;
}
.dc-label {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #94A3B8;
  margin-bottom: 8px;
}
.dc-text {
  font-size: 0.875rem;
  line-height: 1.6;
  color: #475569;
}
.dc-input .dc-text {
  color: #6B7280;
  font-style: italic;
  background: #F8FAFC;
  padding: 12px;
  border-radius: 8px;
  border-left: 3px solid #E2E8F0;
}
.dc-output .dc-text {
  color: #1E293B;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.dc-hl {
  font-weight: 700;
  color: #2563EB;
}
.dc-num {
  font-weight: 700;
  color: #7C3AED;
}

/* ===== RISK REVERSAL ===== */
.risk-section {
  text-align: center;
  padding: var(--space-10) 24px;
  max-width: 640px;
  margin: 0 auto;
}
.risk-section h2 {
  margin-bottom: var(--space-3);
}
.risk-section p {
  color: var(--color-text-dim);
  font-size: 1rem;
  margin: 0 auto var(--space-5);
}

/* ===== FAQ (on dark bg) ===== */
.faq-section {
  padding: var(--space-14) 0;
}
.faq-header {
  text-align: center;
  margin-bottom: var(--space-8);
}
.faq-list {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(59,130,246,0.12);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.faq-item:hover {
  border-color: rgba(59,130,246,0.3);
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: none;
  border: none;
  color: #F1F5F9;
  font-family: 'Sora', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: color 0.2s;
}
.faq-question:hover {
  color: #FFFFFF;
}
.faq-question .icon {
  font-size: 1.25rem;
  color: #64748B;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-question .icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}
.faq-answer p {
  color: #CBD5E1;
  font-size: 0.9375rem;
  line-height: 1.7;
  max-width: 100%;
  margin: 0;
}

/* ===== FOOTER ===== */
.footer {
  background: #0F172A;
  border-top: 1px solid rgba(59,130,246,0.1);
  padding: var(--space-10) 0 var(--space-6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: var(--space-8);
}
.footer-brand p {
  font-size: 0.875rem;
  color: #64748B;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 100%;
}
.footer-col h4 {
  font-family: 'Sora', sans-serif;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #94A3B8;
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 0.875rem;
  color: #CBD5E1;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-col ul li a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.8125rem;
  color: #475569;
}

/* ===== BODY FIXES ===== */
/* Warmer background instead of pure white */
body {
  background: #FAF9F7;
}

/* Fix trust bar layout */
.trust-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-10);
  flex-wrap: wrap;
}
.trust-stat {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.trust-stat strong {
  font-family: 'Sora', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #2563EB, #7C3AED);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.trust-stat .trust-label {
  font-size: 0.8rem;
  font-weight: 500;
}

/* Hero section visual punch - add subtle glow */
.hero {
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

/* ============================================================
   DESIGN OVERHAUL v2 - 梯度蓝卡片模式铺满全站
   ============================================================ */

/* --- Hero: 加背景装饰圆和更强烈的层次 --- */
.hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-16) 0 var(--space-10);
}
.hero::after {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(37,99,235,0.10) 0%, transparent 65%);
  pointer-events: none;
  z-index: -1;
}

/* --- Demos卡片改为梯度蓝边框（与Hero卡统一） --- */
.demos-card {
  background: #FFFFFF;
  padding: 2px;
  border-radius: 16px;
  border: none;
  background: linear-gradient(145deg, #2563EB, #7C3AED);
  box-shadow: 0 8px 32px rgba(37,99,235,0.10);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.demos-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(37,99,235,0.2);
}
.demos-card .dc-product-name,
.demos-card .dc-section {
  background: #FFFFFF;
  margin: 0;
  padding: 16px 20px;
}
.demos-card .dc-product-name {
  padding-top: 20px;
  border-radius: 14px 14px 0 0;
  border-bottom: 1px solid #E2E8F0;
}
.demos-card .dc-section:last-child {
  border-radius: 0 0 14px 14px;
  padding-bottom: 20px;
}

/* --- Pricing卡片也加梯度边框（选中态） --- */
.pricing-card.popular {
  padding: 2px;
  background: linear-gradient(145deg, #2563EB, #7C3AED) !important;
  border: none !important;
}
.pricing-card.popular > :not(.popular-badge) {
  background: #0F172A;
  border-radius: 14px;
  margin: 0;
  padding: 30px 26px;
  height: calc(100% - 4px);
}
.pricing-card.popular .popular-badge {
  position: relative;
  top: -1px;
  z-index: 3;
  display: inline-block;
  padding: 6px 16px;
  margin-bottom: 4px;
  background: linear-gradient(135deg, #2563EB, #7C3AED) !important;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 20px;
  height: auto;
}

/* --- 更大的标题对比 --- */
.hero-headline .hh-line-1 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  color: #64748B;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.hero-headline .hh-line-2 {
  font-size: clamp(2.8rem, 7vw, 5rem);
  line-height: 1.05;
  margin-top: 8px;
}

.hero-headline .hh-line-2 em {
  background: linear-gradient(135deg, #2563EB, #7C3AED);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Section标题更大 --- */
.demos-header h2 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}
.pricing-header h2 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
}

/* --- 装饰性斜线条背景（Demos区） --- */
.demos-section {
  position: relative;
  overflow: hidden;
}
.demos-section::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* --- 信任条重新设计 --- */
.trust-bar {
  padding: var(--space-6) 0;
  position: relative;
}
.trust-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-12);
  flex-wrap: wrap;
}
.trust-stat strong {
  font-size: 1.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, #2563EB, #7C3AED);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.trust-stat .trust-label {
  font-size: 0.85rem;
  color: #64748B;
  font-weight: 500;
  margin-top: 2px;
}

/* --- 间距加大 --- */
.demos-section { padding: var(--space-16) 0; }
.pricing-section { padding: var(--space-16) 0; }
.faq-section { padding: var(--space-16) 0; }
.risk-section { padding: var(--space-12) 24px; }
.footer { padding: var(--space-12) 0 var(--space-6); }

/* --- Demo内容区 --- */
.dc-input .dc-text {
  border-left: 3px solid #2563EB;
  background: #F8FAFC;
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: #475569;
  font-size: 0.85rem;
}
.dc-output .dc-text {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.dc-hl { color: #2563EB; font-weight: 700; }
.dc-num { color: #7C3AED; font-weight: 700; }

/* --- CTA按钮更大 --- */
.btn-grad {
  padding: 16px 40px;
  font-size: 1.125rem;
  border-radius: 14px;
}
.hero-actions {
  gap: var(--space-4);
  margin-top: var(--space-6);
}

/* 手机端：pricing-highlight卡片取消缩放 */
@media (max-width: 640px) {
  .pricing-card.popular-highlight { transform: none; }
}
/* 平板端补充 */
@media (min-width: 641px) and (max-width: 1024px) {
  .hero { padding: var(--space-12) 24px var(--space-8); }
  .trust-stats { gap: var(--space-6); }
}

/* ===== PRICING — Bundle Pro Highlight ===== */
.pricing-card.popular-highlight {
  transform: scale(1.03);
  border: 2px solid #7C3AED;
  box-shadow: 0 12px 48px rgba(124,58,237,0.15);
  position: relative;
  z-index: 2;
}
.pricing-card.popular-highlight:hover {
  transform: scale(1.03) translateY(-4px);
}
.pricing-card.popular-highlight .popular-badge {
  background: linear-gradient(135deg, #7C3AED, #DB2777);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 16px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 12px;
}
.btn-primary-accent {
  background: linear-gradient(135deg, #7C3AED, #DB2777) !important;
  color: #fff !important;
}
.btn-primary-accent:hover {
  opacity: 0.92;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(124,58,237,0.3);
}

/* ===== UNIFIED BUTTON SYSTEM ===== */
.btn { 
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 36px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  line-height: 1.2;
}
.btn-primary {
  background: linear-gradient(135deg, #2563EB, #7C3AED);
  color: #fff;
  box-shadow: 0 4px 16px rgba(37,99,235,0.25);
}
.btn-primary:hover {
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(37,99,235,0.35);
}
.btn-secondary {
  background: #fff;
  color: #2563EB;
  border: 2px solid #2563EB;
}
.btn-secondary:hover {
  background: #EFF6FF;
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: #4B5563;
  border: 1px solid #D1D5DB;
}
.btn-ghost:hover {
  border-color: #2563EB;
  color: #2563EB;
}

/* ===== REAL RESULTS SECTION ===== */
.results-section {
  padding: 80px 24px;
  background: #fff;
}
.results-header {
  text-align: center;
  margin-bottom: 48px;
}
.results-header .section-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: #7C3AED;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.results-header h2 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  color: #0F172A;
  margin-top: 8px;
  letter-spacing: -0.03em;
}
.results-header p {
  color: #64748B;
  font-size: 1rem;
  max-width: 55ch;
  margin: 12px auto 0;
}
.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}
.result-card {
  background: #FAF9F7;
  border-radius: 16px;
  padding: 32px 24px;
  border: 1px solid #E5E7EB;
  transition: all 0.3s;
}
.result-card:hover {
  border-color: #C7D2FE;
  box-shadow: 0 8px 24px rgba(37,99,235,0.08);
  transform: translateY(-2px);
}
.result-card .rc-agent {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #7C3AED;
  margin-bottom: 12px;
}
.result-card .rc-quote {
  font-size: 0.95rem;
  line-height: 1.7;
  color: #334155;
  margin-bottom: 16px;
  font-style: italic;
}
.result-card .rc-quote::before {
  content: '\201C';
  font-size: 2rem;
  color: #2563EB;
  opacity: 0.3;
  line-height: 0;
  vertical-align: -0.3em;
  margin-right: 4px;
}
.result-card .rc-outcome {
  font-size: 0.85rem;
  font-weight: 600;
  color: #059669;
  background: #ECFDF5;
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.result-card .rc-book {
  font-size: 0.75rem;
  color: #94A3B8;
  border-top: 1px solid #E5E7EB;
  padding-top: 12px;
  margin-top: 4px;
}
.result-card .rc-book strong {
  color: #64748B;
}
@media (max-width: 768px) {
  .results-grid { grid-template-columns: 1fr; }
  .results-section { padding: 48px 16px; }
  .result-card { padding: 24px 20px; }
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.875rem;
  border-radius: 8px;
}
.btn-lg {
  padding: 16px 40px;
  font-size: 1.125rem;
  border-radius: 14px;
}