@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --primary: #dc2626;
  --primary-dark: #b91c1c;
  --primary-light: #fef2f2;
  --dark: #111827;
  --dark-secondary: #1f2937;
  --text: #374151;
  --text-light: #6b7280;
  --text-lighter: #9ca3af;
  --bg: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --border: #e5e7eb;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1);
  --radius: 12px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

/* ─── Navigation ─── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}
.nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--dark);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.3px;
}
.nav-logo-icon {
  width: 34px; height: 34px;
  background: var(--primary);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  color: var(--text-light);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--dark); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 0; right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-cta {
  background: var(--primary) !important;
  color: #fff !important;
  padding: 9px 22px !important;
  border-radius: 9px !important;
  font-weight: 600 !important;
  font-size: 13px !important;
  box-shadow: 0 2px 8px rgba(220,38,38,0.25);
}
.nav-cta:hover { background: var(--primary-dark) !important; transform: translateY(-1px); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--dark);
  font-size: 22px;
  line-height: 1;
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; align-items: center; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-links a.active::after { display: none; }
}

/* ─── Page Wrapper ─── */
.page-wrap {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Hero ─── */
.hero {
  padding: 80px 24px 60px;
  text-align: center;
  background: linear-gradient(165deg, #fef2f2 0%, #fff 40%, #f0f9ff 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -60%; right: -20%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(220,38,38,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(220,38,38,0.15);
}
.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 900;
  color: var(--dark);
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}
.hero h1 span { color: var(--primary); }
.hero p {
  font-size: 18px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(220,38,38,0.3);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); color: #fff; }
.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--dark);
}
.btn-secondary:hover { background: var(--border); transform: translateY(-1px); color: var(--dark); }

/* ─── Section Styles ─── */
.section {
  padding: 80px 24px;
}
.section-alt { background: var(--bg-secondary); }
.section-header {
  text-align: center;
  margin-bottom: 52px;
}
.section-header h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}
.section-header p {
  font-size: 17px;
  color: var(--text-light);
  max-width: 580px;
  margin: 0 auto;
}

/* ─── Feature Cards ─── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 1140px;
  margin: 0 auto;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
}
.feature-card:hover {
  border-color: rgba(220,38,38,0.2);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.feature-icon {
  width: 48px; height: 48px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ─── Use Case Cards ─── */
.usecase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  max-width: 1140px;
  margin: 0 auto;
}
.usecase-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}
.usecase-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.usecase-card .uc-icon {
  font-size: 32px;
  margin-bottom: 14px;
}
.usecase-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}
.usecase-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ─── Steps / How It Works ─── */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}
.step {
  text-align: center;
  position: relative;
}
.step-num {
  width: 44px; height: 44px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  margin-bottom: 18px;
}
.step h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.step p {
  font-size: 14px;
  color: var(--text-light);
}

/* ─── FAQ Accordion ─── */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(220,38,38,0.2); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  color: var(--dark);
  background: #fff;
  border: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
  transition: var(--transition);
}
.faq-q:hover { background: var(--bg-secondary); }
.faq-q .arrow {
  font-size: 12px;
  transition: transform 0.3s;
  color: var(--text-lighter);
}
.faq-item.open .faq-q .arrow { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.open .faq-a { max-height: 400px; }
.faq-a-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

/* ─── Article / Content Page ─── */
.content-page {
  max-width: 780px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}
.content-page h1 {
  font-size: 34px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.content-meta {
  font-size: 14px;
  color: var(--text-lighter);
  margin-bottom: 36px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.content-page h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--dark);
  margin: 40px 0 16px;
}
.content-page h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--dark-secondary);
  margin: 28px 0 12px;
}
.content-page p {
  margin-bottom: 18px;
  color: var(--text);
  font-size: 16px;
}
.content-page ul, .content-page ol {
  margin: 16px 0 24px 28px;
}
.content-page li {
  margin-bottom: 10px;
  font-size: 15px;
  color: var(--text);
}
.content-page strong { color: var(--dark); }
.content-page blockquote {
  border-left: 3px solid var(--primary);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--primary-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--text);
}

/* ─── Blog Cards ─── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
  max-width: 1140px;
  margin: 0 auto;
}
.blog-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  text-decoration: none;
  display: block;
}
.blog-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
  border-color: rgba(220,38,38,0.15);
}
.blog-card-img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
}
.blog-card-body {
  padding: 24px;
}
.blog-card-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
}
.blog-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
  line-height: 1.4;
}
.blog-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 16px;
}
.blog-card .read-more {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}

/* ─── Contact Form ─── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 900px;
  margin: 0 auto;
}
@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}
.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  transition: var(--transition);
}
.contact-info-card:hover { border-color: rgba(220,38,38,0.2); }
.contact-info-card .ci-icon {
  width: 44px; height: 44px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.contact-info-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 4px;
}
.contact-info-card p {
  font-size: 14px;
  color: var(--text-light);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-family: inherit;
  font-size: 15px;
  color: var(--dark);
  transition: var(--transition);
  background: #fff;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(220,38,38,0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* ─── App Download Banner ─── */
.app-banner {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-secondary) 100%);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  display: flex;
  align-items: center;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
  color: #fff;
}
@media (max-width: 640px) {
  .app-banner { flex-direction: column; text-align: center; padding: 36px 24px; }
}
.app-banner-icon {
  width: 88px; height: 88px;
  border-radius: 20px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  flex-shrink: 0;
}
.app-banner h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}
.app-banner p {
  font-size: 15px;
  color: #cbd5e1;
  margin-bottom: 20px;
}
.app-banner .btn-primary { background: var(--primary); }

/* ─── Site Footer ─── */
.site-footer {
  background: var(--dark);
  color: #94a3b8;
  padding: 64px 24px 32px;
}
.footer-inner {
  max-width: 1140px;
  margin: 0 auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-brand .f-logo {
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
}
.footer-col h4 {
  color: #e2e8f0;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.footer-col ul {
  list-style: none;
}
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  color: #94a3b8;
  font-size: 14px;
  transition: var(--transition);
  text-decoration: none;
}
.footer-col a:hover { color: #e2e8f0; }
.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
}

/* ─── Breadcrumb ─── */
.breadcrumb {
  padding: 16px 24px;
  font-size: 13px;
  color: var(--text-lighter);
  max-width: 1140px;
  margin: 0 auto;
}
.breadcrumb a { color: var(--text-light); }
.breadcrumb span { margin: 0 6px; }

/* ─── Utilities ─── */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.highlight-text { color: var(--primary); font-weight: 700; }

/* ─── Animations ─── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}