/* Custom Patches Pro - High Speed Modular CSS */
:root {
  --primary: #0f172a;
  --primary-accent: #2563eb;
  --primary-hover: #1d4ed8;
  --accent-green: #059669;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #475569;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 12px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  font-family: var(--font);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-hover);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Nav */
header {
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo span {
  color: var(--primary-accent);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 24px;
  align-items: center;
}

.nav-menu a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 15px;
}

.nav-menu a:hover, .nav-menu a.active {
  color: var(--primary-accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  background-color: var(--primary-accent);
  color: #ffffff !important;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-outline {
  border: 2px solid var(--border-color);
  background: transparent;
  color: var(--text-main);
}

.btn-outline:hover {
  border-color: var(--primary-accent);
  color: var(--primary-accent);
}

/* Mobile Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--primary);
}

/* Hero Section */
.hero {
  padding: 60px 0;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #ffffff;
  border-radius: 0 0 24px 24px;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: rgba(37, 99, 235, 0.2);
  color: #60a5fa;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  border: 1px solid rgba(96, 165, 250, 0.3);
}

.hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  color: #94a3b8;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Section Common */
.section {
  padding: 60px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
}

.section-title p {
  color: var(--text-muted);
  font-size: 16px;
  margin-top: 8px;
}

/* Grid & Cards */
.patch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #cbd5e1;
}

.card-icon {
  width: 48px;
  height: 48px;
  background: #eff6ff;
  color: var(--primary-accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary);
}

.card p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 20px;
  flex-grow: 1;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

/* Detail Article Layout */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  margin-top: 40px;
}

.article-body {
  background: #ffffff;
  padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.article-body h2 {
  font-size: 24px;
  color: var(--primary);
  margin: 32px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid #f1f5f9;
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body h3 {
  font-size: 18px;
  color: var(--primary);
  margin: 24px 0 12px 0;
}

.article-body p {
  margin-bottom: 16px;
  color: #334155;
  font-size: 16px;
  line-height: 1.7;
}

.article-body ul, .article-body ol {
  margin-bottom: 20px;
  padding-left: 24px;
  color: #334155;
}

.article-body li {
  margin-bottom: 8px;
}

/* Spec Table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.spec-table th, .spec-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.spec-table th {
  background: #f1f5f9;
  font-weight: 700;
  color: var(--primary);
}

/* Sidebar Quote Card */
.sidebar {
  position: sticky;
  top: 90px;
  height: fit-content;
}

.quote-widget {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-md);
}

.quote-widget h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* FAQ Accordion */
.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 16px 20px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #ffffff;
}

.faq-answer {
  padding: 0 20px 16px 20px;
  display: none;
  color: var(--text-muted);
}

.faq-item.active .faq-answer {
  display: block;
}

/* Footer */
footer {
  background: var(--primary);
  color: #94a3b8;
  padding: 60px 0 30px 0;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 16px;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: #94a3b8;
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid #334155;
  font-size: 14px;
}

/* Responsive */
@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
  }
  .nav-menu.active {
    display: flex;
  }
  .menu-toggle {
    display: block;
  }
  .hero h1 {
    font-size: 30px;
  }
}