* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --color-bg: #ffffff;
  --color-surface: #f8fafc;
  --color-text-primary: #0b1a33;
  --color-text-secondary: #334155;
  --color-text-muted: #64748b;
  --color-accent: #2563eb;
  --color-accent-soft: #dbeafe;
  --color-accent-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
  --color-border: #e9edf4;
  --shadow-card: 0 20px 60px -12px rgba(0, 20, 40, 0.08), 0 8px 24px -6px rgba(0,0,0,0.02);
  --shadow-hover: 0 30px 80px -16px rgba(0, 20, 40, 0.15);
  --radius-lg: 32px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: var(--font-sans); background-color: var(--color-bg); color: var(--color-text-primary); line-height: 1.6; }
a { color: inherit; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 40px; }
@media (max-width: 768px) { .container { padding: 0 24px; } }

.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px;
  font-weight: 600; font-size: 0.95rem; border: none; border-radius: 60px;
  background: var(--color-accent-gradient); color: #fff; cursor: pointer;
  transition: var(--transition); box-shadow: 0 8px 24px -6px rgba(37, 99, 235, 0.25);
  text-decoration: none; letter-spacing: 0.3px;
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 16px 40px -8px rgba(37, 99, 235, 0.35); }
.btn-outline { background: transparent; color: var(--color-text-primary); box-shadow: inset 0 0 0 1.5px var(--color-border); backdrop-filter: blur(4px); }
.btn-outline:hover { background: var(--color-surface); box-shadow: inset 0 0 0 1.5px var(--color-text-primary); }
.btn-sm { padding: 10px 24px; font-size: 0.9rem; }

.navbar {
  padding: 24px 0 16px; border-bottom: 1px solid rgba(0,0,0,0.02);
  background: rgba(255,255,255,0.72); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 999;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; position: relative; }
.logo { font-weight: 700; font-size: 1.6rem; letter-spacing: -0.02em; background: var(--color-accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.logo span { font-weight: 300; -webkit-text-fill-color: var(--color-text-secondary); background: none; }
.nav-links { display: flex; align-items: center; gap: 36px; list-style: none; }
.nav-links a { text-decoration: none; color: var(--color-text-secondary); font-weight: 500; font-size: 0.95rem; transition: var(--transition); position: relative; }
.nav-links a::after { content: ''; position: absolute; width: 0; height: 2px; bottom: -4px; left: 0; background: var(--color-accent-gradient); transition: var(--transition); }
.nav-links a:hover { color: var(--color-text-primary); }
.nav-links a:hover::after { width: 100%; }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.hamburger span { width: 28px; height: 2.5px; background: var(--color-text-primary); border-radius: 4px; transition: var(--transition); }
@media (max-width: 900px) {
  .nav-links {
    display: none; flex-direction: column; background: rgba(255,255,255,0.96); backdrop-filter: blur(12px);
    padding: 32px 24px; border-radius: var(--radius-md); box-shadow: var(--shadow-card); position: absolute;
    top: 76px; left: 24px; right: 24px; gap: 20px; align-items: flex-start;
  }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
}

.hero { padding: 80px 0 64px; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 60px; align-items: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: var(--color-accent-soft); padding: 6px 18px 6px 12px; border-radius: 60px; font-size: 0.85rem; font-weight: 500; color: var(--color-accent); margin-bottom: 24px; }
.hero-badge i { font-size: 0.8rem; }
.hero h1 { font-size: 3.6rem; font-weight: 700; line-height: 1.15; letter-spacing: -0.03em; margin-bottom: 20px; }
.hero h1 .highlight { background: var(--color-accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 1.2rem; color: var(--color-text-secondary); max-width: 520px; margin-bottom: 36px; }
.hero-visual { background: var(--color-surface); border-radius: var(--radius-lg); padding: 20px 20px 0; box-shadow: var(--shadow-card); display: flex; flex-direction: column; align-items: center; transition: var(--transition); border: 1px solid rgba(255,255,255,0.4); }
.hero-visual:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.mockup-wrapper { width: 100%; background: #fff; border-radius: var(--radius-md) var(--radius-md) 0 0; padding: 16px 16px 0; box-shadow: inset 0 -2px 0 rgba(0,0,0,0.02); }
.mockup-browser { display: flex; gap: 8px; padding: 8px 12px; background: #f1f5f9; border-radius: 40px 40px 0 0; }
.mockup-dot { width: 12px; height: 12px; border-radius: 50%; background: #e2e8f0; }
.mockup-dot:nth-child(1) { background: #ef4444; } .mockup-dot:nth-child(2) { background: #f59e0b; } .mockup-dot:nth-child(3) { background: #10b981; }
.mockup-screen { background: #f8fafc; border-radius: 0 0 var(--radius-sm) var(--radius-sm); padding: 24px 16px; min-height: 300px; display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; align-items: center; }
.mockup-app { background: white; border-radius: 16px; padding: 20px 16px; width: 130px; box-shadow: 0 8px 20px -8px rgba(0,0,0,0.05); border: 1px solid var(--color-border); text-align: center; transition: var(--transition); }
.mockup-app:hover { transform: scale(1.02); border-color: var(--color-accent); }
.mockup-app i { font-size: 2.4rem; background: var(--color-accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 8px; }
.mockup-app h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.mockup-app p { font-size: 0.75rem; color: var(--color-text-muted); }
@media (max-width: 1024px) { .hero h1 { font-size: 2.8rem; } .hero-grid { gap: 40px; } }
@media (max-width: 768px) { .hero-grid { grid-template-columns: 1fr; } .hero h1 { font-size: 2.4rem; } .mockup-app { width: 100px; } }

.section { padding: 80px 0; }
.section-header { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-header h2 { font-size: 2.6rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 12px; }
.section-header p { color: var(--color-text-secondary); font-size: 1.1rem; }
.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 32px; }
.product-card { background: #fff; border-radius: var(--radius-md); padding: 36px 28px 32px; box-shadow: var(--shadow-card); border: 1px solid var(--color-border); transition: var(--transition); position: relative; overflow: hidden; }
.product-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: var(--color-accent-gradient); opacity: 0; transition: var(--transition); }
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: transparent; }
.product-card:hover::before { opacity: 1; }
.product-icon { font-size: 2.8rem; margin-bottom: 18px; background: var(--color-accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.product-card h3 { font-size: 1.5rem; font-weight: 600; margin-bottom: 10px; }
.product-card p { color: var(--color-text-secondary); margin-bottom: 20px; font-size: 0.98rem; }
.product-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.product-tags span { background: var(--color-surface); padding: 4px 14px; border-radius: 60px; font-size: 0.75rem; font-weight: 500; color: var(--color-text-secondary); }
.product-link { font-weight: 600; color: var(--color-accent); text-decoration: none; display: inline-flex; align-items: center; gap: 6px; transition: var(--transition); }
.product-link i { transition: var(--transition); }
.product-link:hover i { transform: translateX(4px); }

.tech-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; margin-top: 24px; }
.tech-item { background: #fff; border-radius: var(--radius-sm); padding: 28px 20px; text-align: center; border: 1px solid var(--color-border); transition: var(--transition); }
.tech-item:hover { border-color: var(--color-accent); box-shadow: var(--shadow-card); transform: translateY(-4px); }
.tech-item i { font-size: 2.6rem; background: var(--color-accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 12px; }
.tech-item h4 { font-weight: 600; font-size: 1rem; margin-bottom: 4px; }
.tech-item p { font-size: 0.85rem; color: var(--color-text-muted); }

.cta-section { background: var(--color-surface); border-radius: var(--radius-lg); padding: 64px 40px; display: flex; flex-direction: column; align-items: center; text-align: center; border: 1px solid var(--color-border); }
.cta-section h2 { font-size: 2.4rem; font-weight: 700; margin-bottom: 12px; }
.cta-section p { max-width: 520px; color: var(--color-text-secondary); font-size: 1.1rem; margin-bottom: 32px; }

.detail-hero {
  padding: 64px 0 40px;
}
.detail-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
}
.detail-panel h1, .page-title {
  font-size: 2.8rem;
  line-height: 1.2;
  margin-bottom: 14px;
}
.detail-panel p, .page-copy {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
}
.legal-content {
  display: grid;
  gap: 24px;
}
.legal-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
}
.legal-card h2 {
  font-size: 1.35rem;
  margin-bottom: 14px;
}
.legal-card p, .legal-card li {
  color: var(--color-text-secondary);
  font-size: 0.98rem;
}
.legal-card ul, .legal-card ol {
  padding-left: 1.4rem;
  margin: 0.6rem 0 0 0;
}
.legal-card li {
  margin-bottom: 0.45rem;
}
.legal-note {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.92rem;
}
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.info-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
}
.info-card h3 {
  margin-bottom: 10px;
  font-size: 1.25rem;
}
.info-card p, .info-card li {
  color: var(--color-text-secondary);
}
.breadcrumb {
  margin-bottom: 16px;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}
.breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}
.form-grid {
  display: grid;
  gap: 16px;
  max-width: 720px;
}
.form-grid input, .form-grid textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 14px 16px;
  font: inherit;
  background: #fff;
  color: var(--color-text-primary);
}
.form-grid textarea {
  min-height: 160px;
  resize: vertical;
}
.form-grid input:focus, .form-grid textarea:focus {
  outline: 2px solid rgba(37, 99, 235, 0.15);
  border-color: var(--color-accent);
}

.footer { padding: 48px 0 32px; border-top: 1px solid var(--color-border); margin-top: 24px; }
.footer-grid { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 32px; }
.footer-col p { color: var(--color-text-muted); font-size: 0.9rem; margin-top: 8px; max-width: 260px; }
.footer-links { display: flex; gap: 48px; flex-wrap: wrap; }
.footer-links ul { list-style: none; }
.footer-links ul li { margin-bottom: 8px; }
.footer-links a { color: var(--color-text-secondary); text-decoration: none; font-size: 0.9rem; transition: var(--transition); }
.footer-links a:hover { color: var(--color-text-primary); }
.footer-bottom { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--color-border); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; font-size: 0.85rem; color: var(--color-text-muted); }
@media (max-width: 600px) { .footer-grid { flex-direction: column; } .footer-links { gap: 24px; } .detail-panel { padding: 28px 20px; } .detail-panel h1, .page-title { font-size: 2.1rem; } }