/* =========================================
   TCP-80.NET — Main Stylesheet
   ========================================= */

/* === Variables === */
:root {
  --bg: #080c14;
  --bg-card: #0d1220;
  --bg-card-hover: #111827;
  --border: #1e2a3d;
  --border-light: #263348;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.15);
  --accent: #06b6d4;
  --accent-green: #10b981;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "Fira Code", "Cascadia Code", "JetBrains Mono", monospace;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.3);
  --transition: 0.2s ease;
  --header-h: 68px;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-hover); }
ul { list-style: none; }

/* === Layout === */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === Header === */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(8, 12, 20, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: background var(--transition);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 32px;
}

/* Logo */
.site-logo {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  letter-spacing: -0.5px;
}
.site-logo:hover { color: var(--text); }
.logo-bracket { color: var(--accent); }
.logo-dash { color: var(--text-dim); }
.logo-port { color: var(--primary); }
.site-logo-img {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.site-logo-img img {
  display: block;
  height: 36px;
  width: auto;
  max-width: 160px;
  object-fit: contain;
}

/* Nav */
.site-nav > ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav > ul > li {
  position: relative;
}
.site-nav > ul > li > a {
  display: block;
  padding: 8px 14px;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.site-nav > ul > li > a:hover,
.site-nav > ul > li.active > a {
  color: var(--text);
  background: rgba(255,255,255,0.06);
}

/* Dropdown */
.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all 0.15s ease;
  box-shadow: var(--shadow);
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown li a {
  display: block;
  padding: 9px 14px;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.dropdown li a:hover {
  color: var(--text);
  background: rgba(255,255,255,0.06);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: all 0.2s ease;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
}
.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-light);
}
.btn-outline:hover {
  color: var(--text);
  border-color: var(--primary);
  background: var(--primary-glow);
}
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-sm { padding: 7px 14px; font-size: 0.8rem; }
.btn-telegram {
  background: #229ED9;
  color: #fff;
}
.btn-telegram:hover {
  background: #1a8abf;
  color: #fff;
  transform: translateY(-1px);
}

/* === Hero === */
.hero {
  padding-top: calc(var(--header-h) + 80px);
  padding-bottom: 100px;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 50% -20%, rgba(59, 130, 246, 0.12) 0%, transparent 70%),
    radial-gradient(ellipse 40% 30% at 80% 60%, rgba(6, 182, 212, 0.07) 0%, transparent 60%);
  pointer-events: none;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 24px;
  font-weight: 500;
}
.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--accent-green);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.hero h1 .accent { color: var(--primary); }
.hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 36px;
}
.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  margin-top: 72px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.hero-stat {
  text-align: center;
}
.hero-stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  font-family: var(--font-mono);
}
.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 6px;
}

/* === Section === */
section {
  padding: 80px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary);
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
}
.section-header p {
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* === Service Cards Grid === */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.service-card:hover::before { opacity: 1; }
.service-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-glow);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}
.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.service-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 20px;
}
.service-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  font-family: var(--font-mono);
}
.service-price span {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-dim);
  font-family: var(--font);
}
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  margin-top: 20px;
  transition: gap var(--transition);
}
.service-link:hover { gap: 10px; color: var(--primary); }

/* === Features Section === */
.features-bg {
  background: linear-gradient(180deg, transparent 0%, rgba(59, 130, 246, 0.03) 50%, transparent 100%);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.feature-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  gap: 16px;
  transition: border-color var(--transition);
}
.feature-item:hover { border-color: var(--border-light); }
.feature-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: rgba(16, 185, 129, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-green);
}
.feature-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.feature-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* === Pricing Cards === */
.pricing-grid {
  display: grid;
  gap: 16px;
}
.pricing-grid-2 { grid-template-columns: repeat(2, 1fr); }
.pricing-grid-3 { grid-template-columns: repeat(3, 1fr); }
.pricing-grid-4 { grid-template-columns: repeat(4, 1fr); }
.pricing-grid-5 { grid-template-columns: repeat(5, 1fr); }

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
  position: relative;
}
.pricing-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}
.pricing-card.featured {
  border-color: var(--primary);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.06) 0%, var(--bg-card) 100%);
}
.pricing-card.featured::before {
  content: '추천';
  position: absolute;
  top: -1px; right: 20px;
  background: var(--primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 0 0 6px 6px;
  letter-spacing: 0.05em;
}
.pricing-tier {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.pricing-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.pricing-price {
  margin-bottom: 20px;
}
.pricing-amount {
  font-size: 1.8rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text);
  line-height: 1;
}
.pricing-period {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 4px;
}
.pricing-free { color: var(--accent-green); }
.pricing-divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
}
.pricing-specs {
  flex: 1;
}
.spec-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  font-size: 0.85rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.spec-item:last-child { border-bottom: none; }
.spec-label { color: var(--text-muted); }
.spec-value { font-weight: 600; color: var(--text); }
.pricing-features {
  margin: 16px 0;
}
.pricing-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 7px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.pricing-feature .check {
  flex-shrink: 0;
  color: var(--accent-green);
  margin-top: 1px;
}
.pricing-feature .free-badge {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 1px 6px;
  margin-left: auto;
  flex-shrink: 0;
}
.pricing-cta { margin-top: 20px; }
.pricing-cta .btn { width: 100%; justify-content: center; }

/* === Page Hero (내부 페이지용) === */
.page-hero {
  padding-top: calc(var(--header-h) + 60px);
  padding-bottom: 60px;
  position: relative;
  overflow: hidden;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 10% 50%, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 16px;
}
.page-hero .breadcrumb a { color: var(--text-dim); }
.page-hero .breadcrumb a:hover { color: var(--text-muted); }
.page-hero .breadcrumb span { color: var(--text-dim); }
.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 14px;
}
.page-hero h1 .accent { color: var(--primary); }
.page-hero p {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
}

/* === Note boxes === */
.note-box {
  background: rgba(59, 130, 246, 0.07);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}
.note-box strong { color: var(--primary); }

/* === Security Page === */
.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.security-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition);
}
.security-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}
.security-card.free-card {
  border-color: rgba(16, 185, 129, 0.25);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, var(--bg-card) 100%);
}
.security-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  margin-bottom: 14px;
}
.badge-free {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.2);
}
.badge-paid {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary);
  border: 1px solid rgba(59, 130, 246, 0.2);
}
.badge-consult {
  background: rgba(148, 163, 184, 0.08);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.security-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.security-card p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.security-price-text {
  font-size: 1.4rem;
  font-weight: 800;
  font-family: var(--font-mono);
}
.security-price-free { color: var(--accent-green); }
.security-price-paid { color: var(--text); }
.security-price-period { font-size: 0.8rem; font-weight: 400; color: var(--text-dim); font-family: var(--font); }
.security-features { margin-top: 16px; }
.security-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 6px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.security-feature .check { color: var(--accent-green); flex-shrink: 0; }

/* === Blog === */
.blog-page {
  padding-top: calc(var(--header-h) + 60px);
  padding-bottom: 80px;
}
.blog-header {
  margin-bottom: 48px;
}
.blog-header h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 10px;
}
.blog-header p { color: var(--text-muted); }
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.blog-card:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}
.blog-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 12px;
}
.blog-card-category {
  background: var(--primary-glow);
  color: var(--primary);
  border-radius: 4px;
  padding: 2px 8px;
  font-weight: 600;
}
.blog-card h2 {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
}
.blog-card h2 a { color: var(--text); }
.blog-card h2 a:hover { color: var(--primary); }
.blog-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 16px;
}
.blog-card-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* === Post Article === */
.post-article {
  padding-top: calc(var(--header-h) + 60px);
  padding-bottom: 80px;
}
.post-header { margin-bottom: 48px; }
.post-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 16px;
}
.post-category {
  background: var(--primary-glow);
  color: var(--primary);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
}
.post-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 16px;
}
.post-excerpt {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.7;
}
.post-content {
  max-width: 720px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-muted);
}
.post-content h2, .post-content h3 { color: var(--text); font-weight: 700; letter-spacing: -0.02em; margin: 2em 0 0.75em; }
.post-content h2 { font-size: 1.5rem; }
.post-content h3 { font-size: 1.15rem; }
.post-content p { margin-bottom: 1.25em; }
.post-content ul, .post-content ol { padding-left: 1.5em; margin-bottom: 1.25em; list-style: initial; }
.post-content ol { list-style: decimal; }
.post-content li { margin-bottom: 0.5em; }
.post-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent);
}
.post-content pre {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  overflow-x: auto;
  margin-bottom: 1.5em;
}
.post-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.post-content blockquote {
  border-left: 3px solid var(--primary);
  padding: 12px 20px;
  background: var(--primary-glow);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 1.5em;
  color: var(--text-muted);
}
.post-footer { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); }

/* === About Page === */
.about-content {
  padding-top: calc(var(--header-h) + 60px);
  padding-bottom: 80px;
}
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}
.about-text h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 20px;
}
.about-text h1 .accent { color: var(--primary); }
.about-text p {
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 16px;
}
.about-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}
.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
}
.value-number {
  font-size: 2.5rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
}
.value-label {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.value-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* === Support Page === */
.support-content {
  padding-top: calc(var(--header-h) + 60px);
  padding-bottom: 80px;
}
.support-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.support-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
}
.support-card h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.support-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 24px;
}
.support-info-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.support-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.support-info-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--primary-glow);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}
.support-info-text strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 2px;
}
.support-info-text span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* === CTA Section === */
.cta-section {
  padding: 80px 0;
  background: radial-gradient(ellipse 80% 100% at 50% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
  text-align: center;
}
.cta-section h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 14px;
}
.cta-section p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 32px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}
.cta-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* === Footer === */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
  background: var(--bg-card);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .site-logo,
.footer-brand .site-logo-img {
  display: inline-flex;
  margin-bottom: 14px;
}
.footer-brand .site-logo-img img {
  height: 32px;
  max-width: 140px;
}
.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-dim);
  line-height: 1.6;
  margin-bottom: 16px;
}
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  transition: color var(--transition);
}
.contact-link:hover { color: #229ED9; }
.footer-links h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 16px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 0.875rem;
  color: var(--text-dim);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--text-muted); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* === Separator === */
.section-sep {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid-4, .pricing-grid-5 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .about-intro { grid-template-columns: 1fr; gap: 40px; }
  .about-values { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed;
    top: var(--header-h); left: 0; right: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    display: none;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .site-nav.open { display: block; }
  .site-nav > ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: rgba(255,255,255,0.03);
    border: none;
    border-left: 2px solid var(--border);
    border-radius: 0;
    margin-left: 16px;
    padding: 4px 0;
    display: none;
  }
  .has-dropdown.open .dropdown { display: block; }
  .services-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid-2, .pricing-grid-3, .pricing-grid-4, .pricing-grid-5 { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 24px; padding-top: 32px; margin-top: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .support-grid { grid-template-columns: 1fr; }
  .about-values { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* === 404 Error Page === */
.error-404 {
  min-height: 60vh;
  display: flex;
  align-items: center;
  padding: 80px 0;
}
.error-404__inner {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}
.error-404__code {
  font-size: clamp(6rem, 20vw, 10rem);
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}
.error-404__title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}
.error-404__desc {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 32px;
}
.error-404__links {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.error-404__nav {
  border-top: 1px solid var(--border);
  padding-top: 32px;
}
.error-404__nav p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 16px;
}
.error-404__nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: center;
}
.error-404__nav ul li a {
  color: var(--primary);
  font-size: 0.9rem;
  text-decoration: none;
}
.error-404__nav ul li a:hover {
  text-decoration: underline;
}