/* Base stylesheet (phase 0).
   Keep this file lean: tokens, reset, utilities, and shared components only. */

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

:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-elevated: #ffffff;
  --text: #0b1222;
  --muted: #556070;
  --border: #d4deed;
  --border-light: #e6edf7;
  --primary: #1746ff;
  --primary-contrast: #ffffff;
  --primary-soft: rgba(27, 92, 255, 0.12);
  --surface: #f6f8fc;
  --surface-strong: #eaf1ff;
  --accent: #2a6df6;
  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #ef4444;
  --shadow: 0 20px 60px rgba(12, 20, 40, 0.12);
  --shadow-soft: 0 10px 30px rgba(12, 20, 40, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --container: 1120px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 56px;
  --space-10: 72px;
  --font-sans: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(1200px 600px at 20% -10%, #eef4ff 0%, #ffffff 55%),
    radial-gradient(900px 500px at 90% 0%, #e9f1ff 0%, #ffffff 50%);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(27, 92, 255, 0.3);
  outline-offset: 2px;
}

button,
input,
textarea,
select {
  font: inherit;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.section {
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--border);
}

.section:last-child {
  border-bottom: none;
}

/* Home page layout */
.home .hero {
  display: grid;
  gap: var(--space-7);
  align-items: center;
  padding: var(--space-8);
  border-radius: var(--radius);
  background: radial-gradient(600px 320px at 10% 0%, rgba(23, 70, 255, 0.08), transparent),
    radial-gradient(500px 260px at 90% 10%, rgba(42, 109, 246, 0.08), transparent),
    #ffffff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.home .hero-split {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
}

.home .hero h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  margin-bottom: var(--space-3);
}

.home .hero p {
  font-size: 1.05rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.social-proof {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: var(--space-4) 0;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.9rem;
  color: var(--muted);
}

.social-proof-text strong {
  color: var(--text);
}

.stat-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stat {
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
}

.stat-label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.stat-value {
  display: block;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 4px;
}

.note {
  margin-top: var(--space-4);
  color: var(--muted);
}

.two-col {
  display: grid;
  gap: var(--space-7);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.section.section--soft {
  padding: var(--space-7);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  margin: var(--space-7) 0;
}

.section.section--soft:last-child {
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .home .hero {
    padding: var(--space-6);
  }

  .home .hero-split {
    grid-template-columns: 1fr;
  }

  .two-col {
    grid-template-columns: 1fr;
  }
}

.page-title {
  margin: 0 0 var(--space-3);
  font-size: clamp(1.75rem, 2.5vw, 2.5rem);
  line-height: 1.2;
}

.page-lead {
  margin: 0 0 var(--space-6);
  color: var(--muted);
  max-width: 75ch;
}

/* Base typography */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-3);
  line-height: 1.25;
  color: var(--text);
}

h2 { font-size: clamp(1.4rem, 2.2vw, 2rem); }
h3 { font-size: clamp(1.15rem, 1.6vw, 1.4rem); }
h4 { font-size: 1.05rem; }
h5, h6 { font-size: 1rem; }

p {
  margin: 0 0 var(--space-4);
  color: var(--muted);
  max-width: 75ch;
}

p:last-child {
  margin-bottom: 0;
}

ul, ol {
  margin: 0 0 var(--space-4);
  padding-left: var(--space-5);
}

li {
  margin-bottom: var(--space-2);
}

blockquote {
  margin: var(--space-5) 0;
  padding: var(--space-4) var(--space-5);
  background: var(--surface);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-sm);
  color: var(--text);
}

code {
  font-family: "SF Mono", "Consolas", "Monaco", monospace;
  font-size: 0.9em;
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
}

pre {
  background: var(--surface);
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  overflow: auto;
}

pre code {
  background: none;
  padding: 0;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-6) 0;
}

small {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Alerts / notices */
.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
}

.alert--success {
  background: rgba(22, 163, 74, 0.08);
  border-color: rgba(22, 163, 74, 0.2);
}

.alert--warning {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.2);
}

.alert--danger {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.2);
}

.alert--info {
  background: rgba(59, 130, 246, 0.08);
  border-color: rgba(59, 130, 246, 0.2);
}

/* Utilities: cards */
.u-card--surface { background: var(--surface); }
.u-card--white { background: #ffffff; }
.u-card--radius-sm { border-radius: var(--radius-sm); }
.u-card--radius { border-radius: var(--radius); }
.u-card--pad-3 { padding: var(--space-3); }
.u-card--pad-4 { padding: var(--space-4); }
.u-card--pad-5 { padding: var(--space-5); }
.u-card--pad-6 { padding: var(--space-6); }
.u-card--shadow-soft { box-shadow: var(--shadow-soft); }
.u-card--shadow { box-shadow: var(--shadow); }
.u-card--transition { transition: box-shadow 0.2s ease, transform 0.2s ease; }
.u-card--elevated { background: var(--bg-elevated); }
.u-card--border-light { border: 1px solid var(--border-light); }
.u-card--border-light-2 { border: 2px solid var(--border-light); }
.u-card--border-2 { border: 2px solid var(--border); }
.u-overflow-hidden { overflow: hidden; }

/* Utilities: flex */
.u-flex { display: flex; }
.u-flex-col { flex-direction: column; }
.u-flex-row { flex-direction: row; }
.u-flex-wrap { flex-wrap: wrap; }
.u-items-start { align-items: flex-start; }
.u-items-center { align-items: center; }
.u-justify-start { justify-content: flex-start; }
.u-justify-center { justify-content: center; }
.u-justify-between { justify-content: space-between; }

/* Utilities: grid */
.u-grid { display: grid; }
.u-gap-2 { gap: var(--space-2); }
.u-gap-3 { gap: var(--space-3); }
.u-gap-4 { gap: var(--space-4); }
.u-gap-5 { gap: var(--space-5); }
.u-gap-6 { gap: var(--space-6); }
.u-grid--min-120 { grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); }
.u-grid--min-140 { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
.u-grid--min-150 { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.u-grid--min-180 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.u-grid--min-200 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.u-grid--min-220 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.u-grid--min-240 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.u-grid--min-250 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.u-grid--min-260 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.u-grid--min-280 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.u-grid--min-300 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.u-grid--cols-2 { grid-template-columns: repeat(2, 1fr); }
.u-grid--cols-3 { grid-template-columns: repeat(3, 1fr); }
.u-grid--cols-4 { grid-template-columns: repeat(4, 1fr); }
.u-grid--cols-6 { grid-template-columns: repeat(6, 1fr); }

/* Utilities: text */
.u-text-center { text-align: center; }
.u-text-muted { color: var(--muted); }
.u-text-success { color: var(--success); }
.u-text-danger { color: var(--danger); }

/* Utilities: spacing */
.u-mt-4 { margin-top: var(--space-4); }
.u-my-6 { margin: var(--space-6) 0; }
.u-my-5 { margin: var(--space-5) 0; }
.u-my-4 { margin: var(--space-4) 0; }
.u-mb-5 { margin-bottom: var(--space-5); }
.u-pt-5 { padding-top: var(--space-5); }
.u-border-top { border-top: 1px solid var(--border); }
.u-line-through { text-decoration: line-through; }

/* Utilities: sizing */
.u-flex-1 { flex: 1; }

/* Utilities: backgrounds/borders */
.u-bg-danger-soft { background: rgba(239, 68, 68, 0.08); }
.u-border-danger-soft { border: 1px solid rgba(239, 68, 68, 0.2); }
.u-banner-primary {
  background: linear-gradient(135deg, var(--primary), #2563eb);
  color: #ffffff;
}
.u-banner-primary .button {
  background: #ffffff;
  color: var(--primary);
  flex-shrink: 0;
}
.u-banner-primary .button:hover {
  background: rgba(255, 255, 255, 0.9);
}

@media (max-width: 640px) {
  .u-flex-col-sm { flex-direction: column; }
  .u-text-center-sm { text-align: center; }
}

/* Account & Payments: method panels */
.reg-method-selector {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.reg-method-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-4);
  background: var(--bg-elevated);
  border: 2px solid var(--border-light);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
}

.reg-method-tab:hover {
  border-color: var(--accent);
}

.reg-method-tab.active {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
}

.reg-method-tab .method-name {
  font-weight: 600;
  color: var(--text);
}

.reg-method-tab .method-time {
  font-size: 0.75rem;
  color: var(--muted);
}

.reg-method-content {
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: var(--space-5);
  border: 1px solid var(--border-light);
}

.reg-method-panel {
  display: none;
}

.reg-method-panel.active {
  display: block;
}

.reg-method-panel h3 {
  margin: 0 0 var(--space-2) 0;
}

.method-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin: var(--space-4) 0;
}

.method-step {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.method-step .step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  font-weight: 600;
  flex-shrink: 0;
}

.method-step .step-content strong {
  display: block;
  margin-bottom: var(--space-1);
}

.method-step .step-content p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.method-note {
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  margin-top: var(--space-4);
}

.method-note.success {
  background: rgba(34, 197, 94, 0.1);
  border-left: 3px solid var(--success);
}

.method-note.warning {
  background: rgba(245, 158, 11, 0.1);
  border-left: 3px solid #f59e0b;
}

.method-note.info {
  background: rgba(59, 130, 246, 0.1);
  border-left: 3px solid var(--accent);
}

.method-note.tip {
  background: rgba(99, 102, 241, 0.08);
  border-left: 3px solid #6366f1;
}

.troubleshoot-item {
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: var(--space-4);
  border: 1px solid var(--border-light);
}

.troubleshoot-item h3 {
  margin: 0 0 var(--space-3) 0;
  font-size: 1rem;
  color: var(--text);
}

.troubleshoot-item ul {
  margin: 0;
  padding-left: var(--space-4);
}

.troubleshoot-item li {
  margin-bottom: var(--space-1);
  font-size: 0.9rem;
}

.checklist-interactive {
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: var(--space-4);
  border: 1px solid var(--border-light);
}

.checklist-interactive h3 {
  margin: 0 0 var(--space-4) 0;
}

.checklist-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--bg);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s;
}

.checklist-item:hover {
  background: rgba(59, 130, 246, 0.05);
}

.checklist-item input[type="checkbox"] {
  display: none;
}

.checklist-item .checkmark {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
}

.checklist-item input:checked + .checkmark {
  background: #22c55e;
  border-color: #22c55e;
}

.checklist-item input:checked + .checkmark::after {
  content: '';
  color: white;
  font-weight: bold;
}

.checklist-item .item-text {
  flex: 1;
  font-size: 0.95rem;
}

.checklist-item input:checked ~ .item-text {
  text-decoration: line-through;
  color: var(--muted);
}

@media (max-width: 768px) {
  .reg-method-selector {
    grid-template-columns: repeat(2, 1fr);
  }

  .troubleshoot-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .reg-method-selector {
    grid-template-columns: 1fr;
  }
}

/* FAQ (simple list) */
.faq-list {
  padding: var(--space-4) var(--space-6);
}

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

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  transition: color 0.2s ease;
}

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

.faq-toggle {
  font-size: 1.3rem;
  font-weight: 300;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border-radius: 50%;
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.faq-item.open .faq-toggle {
  background: var(--primary);
  color: white;
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  padding: 0 var(--space-4);
  transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.2s ease;
}

.faq-item.open .faq-answer {
  max-height: 1000px;
  opacity: 1;
  padding: var(--space-3) var(--space-4) var(--space-4);
}

.faq-item .faq-answer p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.faq-no-results {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-9);
  text-align: center;
  color: var(--muted);
}

.faq-no-results span {
  font-size: 2rem;
  margin-bottom: var(--space-3);
}

@media (max-width: 640px) {
  .faq-list {
    padding: var(--space-4);
  }
}

/* CTA Row */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

@media (max-width: 720px) {
  .cta-row {
    flex-direction: column;
    align-items: stretch;
  }
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--primary-contrast);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-weight: 600;
  transition: top 0.2s;
}

.skip-link:focus {
  top: var(--space-3);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-4) 0;
  min-height: 64px;
}

.brand-group { flex-shrink: 0; }

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--text);
}

.brand:hover { opacity: 0.85; }

.brand-logo {
  display: block;
  height: 36px;
  width: auto;
  object-fit: contain;
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s;
}

.nav-toggle:hover { background: var(--surface); }

.nav-toggle-icon {
  position: relative;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: background 0.2s;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease;
}

.nav-toggle-icon::before { top: -6px; }
.nav-toggle-icon::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after { transform: translateY(-6px) rotate(-45deg); }

.main-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.main-nav.is-open { display: flex; }

.main-nav a {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  background: transparent;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  transition: background 0.2s ease, color 0.2s ease;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  background: var(--surface);
  color: var(--primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header-actions .button {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
}

.button-icon {
  font-size: 1.1em;
  line-height: 1;
}

@media (min-width: 640px) {
  .brand-logo { height: 40px; }
}

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .main-nav {
    display: flex;
    position: static;
    flex-direction: row;
    gap: var(--space-1);
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
  }
  .main-nav a {
    padding: var(--space-2) var(--space-3);
    font-size: 0.9rem;
  }
}

.site-main {
  padding: var(--space-9) 0 var(--space-10);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0 0 var(--space-4);
}

.breadcrumbs a { color: inherit; }
.breadcrumbs .separator { color: var(--muted); }

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 20px;
  min-height: 44px;
  border-radius: 999px;
  background: linear-gradient(135deg, #1d4fff 0%, #173bdb 100%);
  color: var(--primary-contrast);
  font-weight: 600;
  border: 1px solid var(--primary);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button.secondary {
  background: #ffffff;
  color: var(--primary);
  border-color: var(--border);
}

.button.small {
  padding: 8px 14px;
  font-size: 0.9rem;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(23, 70, 255, 0.24);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 100%);
  padding: var(--space-9) 0 var(--space-6);
  margin-top: auto;
}

.footer-inner { display: grid; gap: var(--space-7); }
.footer-top { display: grid; gap: var(--space-6); }

@media (min-width: 768px) {
  .footer-top {
    grid-template-columns: 1fr 2fr;
    gap: var(--space-8);
  }
}

.footer-brand-block {
  display: grid;
  gap: var(--space-3);
  align-content: start;
}

.footer-brand-block .brand { font-size: 1.1rem; }

.footer-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 32ch;
}

.footer-columns {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 640px) {
  .footer-columns {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-5);
  }
}

.footer-col {
  display: grid;
  gap: var(--space-2);
  align-content: start;
}

.footer-col h4 {
  margin: 0 0 var(--space-2);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text);
}

.footer-col a {
  font-size: 0.9rem;
  color: var(--muted);
  padding: var(--space-1) 0;
  transition: color 0.2s;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.footer-legal a {
  color: var(--muted);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-sep { opacity: 0.4; }

/* Forms */
label {
  display: inline-block;
  font-weight: 500;
}

input,
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--text);
  line-height: 1.4;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

input::placeholder,
textarea::placeholder {
  color: var(--muted);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(27, 92, 255, 0.18);
  outline: none;
}

input:disabled,
select:disabled,
textarea:disabled {
  background: var(--surface);
  color: var(--muted);
  cursor: not-allowed;
}

input[type="checkbox"],
input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
}

input[type="range"] {
  appearance: none;
  -webkit-appearance: none;
  height: 6px;
  background: var(--surface-strong);
  border-radius: 999px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid #ffffff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid #ffffff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
}

tr:nth-child(even) td {
  background: rgba(246, 248, 252, 0.6);
}

table caption {
  text-align: left;
  color: var(--muted);
  margin-bottom: var(--space-2);
}

/* Table helpers */
.table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.table-wrap {
  margin: var(--space-4) 0 var(--space-5);
  overflow-x: auto;
}

.table-wrap + .button,
.table + .button,
.table-wrap + .cta-row {
  margin-top: var(--space-4);
}

.table th,
.table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.table th {
  background: var(--surface);
  font-weight: 600;
}

.table a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.table a:hover,
.table a:focus-visible {
  color: var(--accent);
}

/* Lists */
.list-check {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-3);
}

.list-check li {
  position: relative;
  padding-left: 28px;
  color: var(--muted);
}

.list-check li::before {
  content: "✓";
  display: grid;
  place-items: center;
  position: absolute;
  left: 0;
  top: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  color: #ffffff;
  font-size: 0.75rem;
  line-height: 1;
}

.list-steps {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-5);
  display: grid;
  gap: var(--space-3);
  counter-reset: step;
}

.list-steps li {
  position: relative;
  padding: var(--space-3) var(--space-4) var(--space-3) calc(var(--space-5) + 24px);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  line-height: 1.5;
}

.list-steps li::before {
  content: counter(step);
  counter-increment: step;
  position: absolute;
  left: var(--space-4);
  top: var(--space-3);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: var(--primary-contrast);
  font-size: 0.75rem;
  font-weight: 600;
}

.callout {
  padding: var(--space-6);
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

/* Last updated label */
.last-updated {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: var(--space-5);
  padding: var(--space-2) var(--space-3);
  background: var(--surface);
  border-radius: var(--radius-sm);
}

/* Pillars (download quick links) */
.pillars {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-top: var(--space-4);
}

.pillar {
  padding: var(--space-4);
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #ffffff;
  font-weight: 600;
  transition: border-color 0.2s ease, transform 0.2s ease;
  box-shadow: var(--shadow-soft);
}

.pillar:hover,
.pillar:focus-visible {
  border-color: var(--primary);
  transform: translateY(-1px);
}

/* Trust badges (download) */
.trust-badges {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin: var(--space-4) 0;
  padding: var(--space-3) 0;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text);
}

.badge-icon { font-size: 1.1rem; }
.badge-text { font-weight: 500; }

.trust-badge:nth-child(1) {
  border-color: #22c55e;
  background: rgba(34, 197, 94, 0.05);
}

.trust-badge:nth-child(1) .badge-text { color: #16a34a; }

.trust-badge:nth-child(2) {
  border-color: #3b82f6;
  background: rgba(59, 130, 246, 0.05);
}

.trust-badge:nth-child(2) .badge-text { color: #2563eb; }

.trust-badge:nth-child(3) {
  border-color: #8b5cf6;
  background: rgba(139, 92, 246, 0.05);
}

.trust-badge:nth-child(3) .badge-text { color: #7c3aed; }

@media (max-width: 640px) {
  .trust-badges { gap: var(--space-2); }
  .trust-badge {
    padding: var(--space-1) var(--space-2);
    font-size: 0.8rem;
  }
}

/* Tooltips for technical terms */
.term {
  position: relative;
  border-bottom: 1px dotted var(--primary);
  cursor: help;
  color: inherit;
}

.term::after {
  content: attr(data-tip);
  position: fixed;
  top: var(--tip-top, 0);
  left: var(--tip-left, 16px);
  padding: var(--space-3) var(--space-4);
  background: var(--text);
  color: var(--bg);
  font-size: 0.85rem;
  font-weight: 400;
  line-height: 1.5;
  border-radius: var(--radius-sm);
  white-space: normal;
  width: max-content;
  max-width: min(280px, calc(100vw - 32px));
  text-align: left;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, visibility 0.15s ease;
  z-index: 9999;
  pointer-events: none;
  box-shadow: var(--shadow);
}

.term::before {
  content: "";
  position: fixed;
  top: var(--arrow-top, 0);
  left: var(--arrow-left, 50%);
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--text);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, visibility 0.15s ease;
  z-index: 10000;
  pointer-events: none;
}

.term:hover::after,
.term:hover::before,
.term:focus::after,
.term:focus::before {
  opacity: 1;
  visibility: visible;
}

.term[data-tip-pos="top"]::before {
  border-top-color: var(--text);
  border-bottom-color: transparent;
}

.term[data-tip-pos="bottom"]::before {
  border-top-color: transparent;
  border-bottom-color: var(--text);
}

.diagnostic-card.error {
  border-left: 4px solid var(--danger);
}

.diagnostic-card.warning {
  border-left: 4px solid var(--warning);
}

.diagnostic-card.info {
  border-left: 4px solid var(--primary);
}

.diagnostic-header {
  padding: var(--space-4) var(--space-5);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  cursor: pointer;
  user-select: none;
  transition: background 0.2s ease;
}

.diagnostic-header:hover {
  background: var(--surface-strong);
}

.diagnostic-summary {
  flex: 1;
}

.diagnostic-symptom {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 var(--space-1) 0;
}

.diagnostic-preview {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0;
}

.diagnostic-toggle {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border-radius: 50%;
  color: var(--muted);
  transition: transform 0.3s ease;
}

.diagnostic-card.open .diagnostic-toggle {
  transform: rotate(180deg);
}

.diagnostic-body {
  display: none;
  padding: var(--space-5);
}

.diagnostic-card.open .diagnostic-body {
  display: block;
}

.diagnostic-section {
  margin-bottom: var(--space-5);
}

.diagnostic-section:last-child {
  margin-bottom: 0;
}

.diagnostic-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.diagnostic-causes,
.diagnostic-solutions {
  list-style: none;
  padding: 0;
  margin: 0;
}

.diagnostic-causes li {
  padding: var(--space-2) 0;
  padding-left: var(--space-5);
  position: relative;
  font-size: 0.9rem;
  color: var(--text);
}

.diagnostic-causes li::before {
  content: "-";
  position: absolute;
  left: var(--space-2);
  color: var(--danger);
  font-weight: bold;
}

.diagnostic-solutions {
  counter-reset: solution-counter;
}

.diagnostic-solutions li {
  padding: var(--space-3);
  padding-left: calc(var(--space-5) + 24px);
  position: relative;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--surface);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
  counter-increment: solution-counter;
}

.diagnostic-solutions li::before {
  content: counter(solution-counter);
  position: absolute;
  left: var(--space-3);
  top: var(--space-3);
  width: 20px;
  height: 20px;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
}

.diagnostic-note {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  font-size: 0.85rem;
  color: var(--muted);
}

/* Basic FAQ cards */
.faq {
  display: grid;
  gap: var(--space-4);
}

.faq-item {
  padding: var(--space-5);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.faq-item h3 {
  margin: 0 0 var(--space-2);
}