:root {
  --color-primary: #1a365d;
  --color-primary-light: #2c5282;
  --color-primary-dark: #0f2240;
  --color-accent: #d69e2e;
  --color-accent-light: #ecc94b;
  --color-accent-dark: #b7791f;
  --color-bg: #ffffff;
  --color-bg-alt: #f7fafc;
  --color-bg-dark: #edf2f7;
  --color-text: #2d3748;
  --color-text-light: #4a5568;
  --color-text-muted: #718096;
  --color-border: #e2e8f0;
  --color-success: #38a169;
  --color-error: #e53e3e;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px 0 rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --transition: 0.2s ease;
  --max-width: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); margin-bottom: 1rem; }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); margin-bottom: 0.75rem; }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); margin-bottom: 0.5rem; }
h4 { font-size: 1.125rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; }

ul, ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

li { margin-bottom: 0.25rem; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .container { padding: 0 2rem; }
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary);
}

.logo img, .logo svg {
  height: 40px;
  width: auto;
}

.nav {
  display: none;
}

@media (min-width: 1024px) {
  .nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-link:hover {
  color: var(--color-primary);
  background: var(--color-bg-alt);
}

.nav-link[aria-current="page"] {
  color: var(--color-accent);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: block;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
}

.nav-dropdown a:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
}

@media (min-width: 1024px) {
  .mobile-toggle { display: none; }
}

.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  padding: 1rem;
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform var(--transition);
  z-index: 999;
}

.mobile-nav.active {
  transform: translateX(0);
}

@media (min-width: 1024px) {
  .mobile-nav { display: none; }
}

.mobile-nav-link {
  display: block;
  padding: 0.75rem 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-section {
  padding: 0.5rem 0;
}

.mobile-nav-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  padding: 0.5rem 0;
}

.mobile-nav-sub a {
  display: block;
  padding: 0.5rem 0 0.5rem 1rem;
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary-dark);
}

.btn-primary:hover {
  background: var(--color-accent-light);
  color: var(--color-primary-dark);
}

.btn-secondary {
  background: var(--color-primary);
  color: #fff;
}

.btn-secondary:hover {
  background: var(--color-primary-light);
  color: #fff;
}

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

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Hero */
.hero {
  padding: 4rem 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
}

@media (min-width: 768px) {
  .hero { padding: 6rem 0; }
}

.hero h1 {
  color: #fff;
  max-width: 800px;
}

.hero p {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 600px;
}

.hero-content {
  max-width: 700px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Sections */
.section {
  padding: 4rem 0;
}

@media (min-width: 768px) {
  .section { padding: 6rem 0; }
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-dark {
  background: var(--color-primary);
  color: #fff;
}

.section-dark h2, .section-dark h3 {
  color: #fff;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
}

.section-header p {
  color: var(--color-text-light);
  font-size: 1.125rem;
}

/* Grid */
.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 { grid-template-columns: repeat(1, 1fr); }
.grid-3 { grid-template-columns: repeat(1, 1fr); }
.grid-4 { grid-template-columns: repeat(2, 1fr); }

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Cards */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  color: var(--color-accent);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.card h3 a {
  color: inherit;
}

.card h3 a:hover {
  color: var(--color-accent);
}

/* Feature */
.feature {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 768px) {
  .feature { grid-template-columns: 1fr 1fr; }
  .feature-reverse { direction: rtl; }
  .feature-reverse > * { direction: ltr; }
}

.feature-image {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.feature-image svg {
  width: 80%;
  height: auto;
  color: var(--color-primary);
}

/* Stats */
.stats {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(2, 1fr);
  text-align: center;
}

@media (min-width: 768px) {
  .stats { grid-template-columns: repeat(4, 1fr); }
}

.stat-value {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin-top: 0.5rem;
}

/* Pricing */
.pricing-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .pricing-grid { grid-template-columns: repeat(3, 1fr); }
}

.pricing-card {
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  text-align: center;
}

.pricing-card.featured {
  border-color: var(--color-accent);
  position: relative;
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: var(--color-primary-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 1rem;
  border-radius: 999px;
  text-transform: uppercase;
}

.pricing-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
}

.pricing-price {
  margin: 1.5rem 0;
}

.pricing-amount {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
}

.pricing-period {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  text-align: left;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.5rem 0;
  font-size: 0.9375rem;
}

.pricing-features li::before {
  content: "✓";
  color: var(--color-success);
  font-weight: 700;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0;
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding-bottom: 1.25rem;
  color: var(--color-text-light);
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Footer */
.footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.8);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 3rem;
}

@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: 2fr repeat(3, 1fr); }
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.9375rem;
}

.footer h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.875rem;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-legal a {
  color: rgba(255,255,255,0.6);
}

.footer-legal a:hover {
  color: var(--color-accent);
}

/* Breadcrumb */
.breadcrumb {
  padding: 1rem 0;
  font-size: 0.875rem;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb-item:not(:last-child)::after {
  content: "/";
  color: var(--color-text-muted);
}

.breadcrumb-item a {
  color: var(--color-text-muted);
}

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

.breadcrumb-item[aria-current="page"] {
  color: var(--color-text);
}

/* Content */
.content {
  max-width: 800px;
}

.content h2 {
  margin-top: 2.5rem;
}

.content h3 {
  margin-top: 2rem;
}

.content ul, .content ol {
  margin-bottom: 1.5rem;
}

.content li {
  margin-bottom: 0.5rem;
}

/* Table */
.table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-bg-alt);
}

/* CTA Section */
.cta {
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-xl);
  color: #fff;
}

.cta h2 {
  color: #fff;
}

.cta p {
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* Utilities */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* Tool Cards */
.tool-input-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tool-input {
  flex: 1;
  min-width: 200px;
}

.tool-result {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  display: none;
}

.tool-result.active {
  display: block;
}

/* Blog */
.blog-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .blog-grid { grid-template-columns: repeat(3, 1fr); }
}

.blog-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.blog-card:hover {
  box-shadow: var(--shadow-md);
}

.blog-card-image {
  aspect-ratio: 16/9;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
}

.blog-card-image svg {
  width: 64px;
  height: 64px;
  color: var(--color-accent);
}

.blog-card-content {
  padding: 1.5rem;
}

.blog-card-meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.blog-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.blog-card h3 a {
  color: var(--color-primary);
}

.blog-card h3 a:hover {
  color: var(--color-accent);
}

/* Team */
.team-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 768px) {
  .team-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
  .team-grid { grid-template-columns: repeat(4, 1fr); }
}

.team-card {
  text-align: center;
}

.team-avatar {
  width: 120px;
  height: 120px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.team-avatar svg {
  width: 60%;
  height: 60%;
  color: var(--color-primary);
}

.team-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
}

.team-role {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Partners */
.partners-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 640px) {
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
  .partners-grid { grid-template-columns: repeat(4, 1fr); }
}

.partner-card {
  aspect-ratio: 16/9;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  transition: all var(--transition);
}

.partner-card:hover {
  border-color: var(--color-accent);
}

/* Check List */
.check-list {
  list-style: none;
  padding: 0;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.check-list li::before {
  content: "";
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: var(--color-accent);
  border-radius: 50%;
  margin-top: 0.2rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231a365d' stroke-width='3'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E");
  background-size: 12px;
  background-position: center;
  background-repeat: no-repeat;
}

/* TLD Table */
.tld-category {
  margin-bottom: 3rem;
}

.tld-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 640px) {
  .tld-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 768px) {
  .tld-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
  .tld-grid { grid-template-columns: repeat(5, 1fr); }
}

.tld-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
  transition: all var(--transition);
}

.tld-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow);
}

.tld-ext {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.tld-price {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 8px 16px;
  z-index: 9999;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

/* Print */
@media print {
  .header, .footer, .btn, .mobile-nav { display: none; }
  body { font-size: 12pt; }
  .hero { background: none; color: var(--color-text); padding: 1rem 0; }
  .hero h1 { color: var(--color-primary); }
}