/* ==========================================================================
   网际快车内容站 - 全站基础样式
   ========================================================================== */

:root {
  --brand-primary: #2563eb;
  --brand-primary-dark: #1d4ed8;
  --brand-secondary: #0f172a;
  --page-background: #f8fafc;
  --card-background: #ffffff;
  --accent-color: #38bdf8;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --success-color: #16a34a;
  --warning-color: #d97706;
  --danger-color: #dc2626;

  --success-bg: #f0fdf4;
  --warning-bg: #fffbeb;
  --danger-bg: #fef2f2;
  --brand-primary-bg: #eff6ff;

  --font-sans: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  --max-width: 1200px;
  --content-width: 780px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);

  --header-height: 72px;
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--page-background);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul,
ol {
  padding: 0;
  margin: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
p,
figure {
  margin: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
}

table {
  border-collapse: collapse;
  width: 100%;
}

:focus-visible {
  outline: 3px solid var(--accent-color);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 72px 0;
}

.section--tight {
  padding: 48px 0;
}

.section--muted {
  background-color: #f1f5f9;
}

.section-head {
  max-width: 640px;
  margin-bottom: 40px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-primary);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-secondary);
  font-size: 16px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  background: var(--brand-secondary);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 16px;
}

/* ---------- Typography ---------- */
h1 {
  font-size: clamp(30px, 4.2vw, 46px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
}

h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-primary);
}

h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-dark));
  color: #fff;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.28);
}

.btn-primary:hover {
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.36);
}

.btn-secondary {
  background: var(--card-background);
  color: var(--brand-secondary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 9px 18px;
  font-size: 14px;
}

/* ---------- Site header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 250, 252, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
  border-bottom-color: var(--border-color);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  color: var(--text-primary);
  flex-shrink: 0;
}

.brand img {
  width: 34px;
  height: 34px;
}

.brand-sub {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

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

.nav-links a[aria-current="page"] {
  color: var(--brand-primary);
  background: var(--brand-primary-bg);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--card-background);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--brand-primary), var(--accent-color));
  z-index: 101;
  transition: width 0.1s ease-out;
}

/* ---------- Mobile nav ---------- */
@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--card-background);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
    max-height: 80vh;
    overflow-y: auto;
  }

  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links a {
    padding: 13px 12px;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-links a:last-child {
    border-bottom: none;
  }

  .nav-cta .btn-primary-label {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta-desktop {
    display: none;
  }
}

@media (min-width: 901px) {
  .nav-toggle {
    display: none;
  }
}

/* ---------- Hero ---------- */
.hero {
  padding: 56px 0 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-copy .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-primary-bg);
  color: var(--brand-primary);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero-copy h1 {
  margin-bottom: 20px;
}

.hero-copy .lead {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.hero-copy ul.hero-points {
  display: grid;
  gap: 10px;
  margin: 20px 0 28px;
}

.hero-points li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--text-secondary);
  font-size: 15px;
}

.hero-points li svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  color: var(--success-color);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 18px;
}

.hero-trust {
  font-size: 13px;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.7;
}

.hero-visual {
  position: relative;
}

.hero-visual .glow {
  position: absolute;
  inset: -10%;
  background: radial-gradient(circle at 30% 20%, rgba(56, 189, 248, 0.25), transparent 60%),
    radial-gradient(circle at 80% 80%, rgba(37, 99, 235, 0.2), transparent 55%);
  filter: blur(10px);
  z-index: 0;
}

.hero-visual img,
.hero-visual svg {
  position: relative;
  z-index: 1;
}

/* ---------- Answer / GEO summary block ---------- */
.answer-summary {
  background: var(--card-background);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--brand-primary);
  border-radius: var(--radius-lg);
  padding: 28px 30px;
  box-shadow: var(--shadow-sm);
}

.answer-label {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--brand-primary);
  background: var(--brand-primary-bg);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
  letter-spacing: 0.03em;
}

.answer-summary h2,
.answer-summary h1 {
  margin-bottom: 12px;
}

.answer-summary p {
  color: var(--text-secondary);
  font-size: 16px;
}

.answer-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px dashed var(--border-color);
}

.answer-meta-item .block-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 6px;
}

.answer-meta-item p {
  font-size: 14.5px;
  color: var(--text-primary);
  margin: 0;
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.card {
  background: var(--card-background);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.card-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: var(--brand-primary-bg);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.card h3 {
  font-size: 18px;
}

.card p {
  font-size: 14.5px;
  color: var(--text-secondary);
  flex-grow: 1;
}

.card-link {
  font-size: 14px;
  font-weight: 700;
  color: var(--brand-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.card:hover .card-link svg {
  transform: translateX(3px);
}

/* ---------- Pricing cards ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pricing-card {
  background: var(--card-background);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.pricing-card--featured {
  border-color: var(--brand-primary);
}

.pricing-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--accent-color);
  color: var(--brand-secondary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  z-index: 1;
}

.pricing-card-header {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-dark));
  color: #fff;
  padding: 32px 28px 26px;
  text-align: center;
}

.pricing-price {
  font-size: 34px;
  font-weight: 800;
}

.pricing-price span {
  font-size: 15px;
  font-weight: 500;
  opacity: 0.85;
}

.pricing-name {
  margin-top: 6px;
  font-size: 14.5px;
  font-weight: 600;
  color: #dbeafe;
}

.pricing-body {
  padding: 24px 28px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex-grow: 1;
}

.pricing-feature-list {
  display: grid;
  gap: 12px;
}

.pricing-feature-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14px;
  color: var(--text-secondary);
}

.pricing-feature-list li svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--brand-primary);
  margin-top: 2px;
}

.pricing-feature-list .feature-label {
  color: var(--text-muted);
  margin-right: 4px;
}

.pricing-footnote {
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* ---------- Checklist ---------- */
.checklist {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 28px;
}

.checklist li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--text-secondary);
  background: var(--card-background);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.checklist li svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--brand-primary);
  margin-top: 1px;
}

/* ---------- Callouts ---------- */
.callout {
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  border: 1px solid var(--border-color);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.callout svg {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}

.callout h3 {
  margin-bottom: 8px;
}

.callout p {
  font-size: 14.5px;
  margin: 0;
}

.callout--warning {
  background: var(--warning-bg);
  border-color: #fde68a;
}

.callout--warning svg {
  color: var(--warning-color);
}

.callout--info {
  background: var(--brand-primary-bg);
  border-color: #bfdbfe;
}

.callout--info svg {
  color: var(--brand-primary);
}

.callout--danger {
  background: var(--danger-bg);
  border-color: #fecaca;
}

.callout--danger svg {
  color: var(--danger-color);
}

.callout--success {
  background: var(--success-bg);
  border-color: #bbf7d0;
}

.callout--success svg {
  color: var(--success-color);
}

/* ---------- FAQ accordion ---------- */
.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  background: var(--card-background);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text-primary);
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--brand-primary-bg);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-base);
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-base);
}

.faq-question[aria-expanded="true"] + .faq-answer {
  grid-template-rows: 1fr;
}

.faq-answer-inner {
  overflow: hidden;
}

.faq-answer p {
  padding: 0 22px 20px;
  font-size: 14.5px;
  color: var(--text-secondary);
  margin: 0;
}

/* ---------- Table ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  -webkit-overflow-scrolling: touch;
}

table.data-table {
  min-width: 560px;
}

.data-table th,
.data-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  font-size: 14.5px;
}

.data-table th {
  background: #f1f5f9;
  color: var(--text-primary);
  font-weight: 700;
  white-space: nowrap;
}

.data-table td {
  color: var(--text-secondary);
}

.data-table tr:last-child td {
  border-bottom: none;
}

/* ---------- Steps ---------- */
.steps {
  display: grid;
  gap: 18px;
  counter-reset: step;
}

.step {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 16px;
}

.step-number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--brand-secondary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
}

.step-body h3 {
  margin-bottom: 6px;
  font-size: 16.5px;
}

.step-body p,
.step-body ul {
  font-size: 14.5px;
  color: var(--text-secondary);
}

.step-body ul {
  display: grid;
  gap: 6px;
  margin-top: 8px;
}

.step-body ul li {
  padding-left: 18px;
  position: relative;
}

.step-body ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-primary);
}

/* ---------- Badges / tags ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
}

.badge--primary {
  background: var(--brand-primary-bg);
  color: var(--brand-primary);
}

.badge--muted {
  background: #f1f5f9;
  color: var(--text-muted);
}

.badge--warning {
  background: var(--warning-bg);
  color: var(--warning-color);
}

/* ---------- Final CTA ---------- */
.final-cta {
  background: linear-gradient(135deg, var(--brand-secondary), #1e293b);
  border-radius: var(--radius-lg);
  padding: 56px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(56, 189, 248, 0.25), transparent 55%),
    radial-gradient(circle at 85% 75%, rgba(37, 99, 235, 0.3), transparent 55%);
}

.final-cta > * {
  position: relative;
  z-index: 1;
}

.final-cta h2 {
  color: #fff;
  margin-bottom: 14px;
}

.final-cta p {
  color: #cbd5e1;
  max-width: 560px;
  margin: 0 auto 28px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--brand-secondary);
  color: #cbd5e1;
  padding: 64px 0 32px;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand img {
  width: 30px;
  height: 30px;
}

.footer-about {
  font-size: 13.5px;
  color: #94a3b8;
  line-height: 1.8;
  max-width: 320px;
}

.footer-col .block-label {
  color: #fff;
  font-size: 14px;
  margin-bottom: 16px;
}

.footer-col ul {
  display: grid;
  gap: 10px;
}

.footer-col a {
  font-size: 13.5px;
  color: #94a3b8;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 28px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  font-size: 12.5px;
  color: #64748b;
}

.footer-disclaimer {
  font-size: 12.5px;
  color: #64748b;
  line-height: 1.8;
  max-width: 900px;
  margin-top: 18px;
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--brand-secondary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  z-index: 90;
  border: none;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

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

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

.breadcrumb .sep {
  color: #cbd5e1;
}

.breadcrumb .current {
  color: var(--text-secondary);
  font-weight: 600;
}

/* ---------- Utility ---------- */
.mt-0 { margin-top: 0; }
.text-center { text-align: center; }
.center-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    order: -1;
    max-width: 420px;
    margin: 0 auto;
  }

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

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

  .footer-brand,
  .footer-about {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 52px 0;
  }

  .card-grid,
  .card-grid--2,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

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

  .final-cta {
    padding: 40px 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 18px;
  }

  .hero {
    padding: 32px 0 48px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .answer-summary {
    padding: 22px 20px;
  }
}