:root {
  --bg: #f7f8fc;
  --surface: #ffffff;
  --surface-alt: #f0f3fb;
  --text: #101828;
  --text-soft: #475467;
  --primary: #315efb;
  --primary-dark: #2248cd;
  --accent: #7f56d9;
  --border: #d9dfef;
  --success: #0f9d58;
  --danger: #c62828;
  --shadow: 0 12px 35px rgba(16, 24, 40, 0.08);
  --radius: 18px;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Heebo", "Arial", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

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

.container {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  inset-inline-start: 1rem;
  inset-block-start: -5rem;
  background: #000;
  color: #fff;
  padding: 0.65rem 0.8rem;
  z-index: 1000;
}

.skip-link:focus {
  inset-block-start: 1rem;
}

.site-header {
  background: rgba(247, 248, 252, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 999;
  border-bottom: 1px solid var(--border);
}

.header-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--text);
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.brand strong {
  display: block;
  line-height: 1.2;
}

.brand small {
  color: var(--text-soft);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--text-soft);
  font-weight: 500;
}

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

.nav-cta {
  padding: 0.55rem 0.95rem;
  border-radius: 999px;
  background: var(--primary);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  padding: 0.45rem 0.85rem;
  font: inherit;
}

.hero {
  padding: 4.5rem 0 3.5rem;
}

.hero-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1.35fr 1fr;
  align-items: start;
}

.eyebrow {
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 0.6rem;
}

h1 {
  margin: 0;
  line-height: 1.2;
  font-size: clamp(2rem, 3.5vw, 3.2rem);
}

h2 {
  line-height: 1.25;
  margin: 0 0 0.65rem;
  font-size: clamp(1.35rem, 2vw, 2.05rem);
}

h3 {
  margin: 0 0 0.35rem;
  line-height: 1.3;
}

.lead {
  margin: 1rem 0 0;
  font-size: 1.1rem;
  color: var(--text-soft);
  max-width: 62ch;
}

.hero-actions {
  margin-top: 1.35rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.7rem 1.1rem;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  font: inherit;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-full {
  width: 100%;
}

.chip-list {
  list-style: none;
  margin: 1.15rem 0 0;
  padding: 0;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.chip-list li {
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  font-size: 0.92rem;
  color: var(--text-soft);
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.hero-card ol {
  margin: 0.8rem 0 0;
  padding-inline-start: 1.2rem;
}

.hero-card li {
  margin-bottom: 0.45rem;
}

.section {
  padding: 3.2rem 0;
}

.section-alt {
  background: var(--surface-alt);
  border-block: 1px solid var(--border);
}

.section-intro {
  margin-top: 0.25rem;
  color: var(--text-soft);
}

.two-col {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card-grid {
  margin-top: 1rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

.steps {
  margin-top: 1rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.steps article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

.steps span {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: #e8edff;
  color: var(--primary);
  font-weight: 800;
}

.diagnostic-form {
  margin-top: 1rem;
  display: grid;
  gap: 1rem;
}

fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  background: var(--surface);
}

legend {
  font-weight: 700;
  padding-inline: 0.35rem;
}

.diagnostic-form label {
  display: block;
  margin-top: 0.5rem;
  color: var(--text);
}

.form-grid {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.hp-field {
  position: absolute;
  inset-inline-start: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

input[type="text"],
input[type="email"],
input[type="tel"] {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  min-height: 42px;
  padding: 0.55rem 0.7rem;
  font: inherit;
  color: var(--text);
}

input:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(49, 94, 251, 0.25);
  outline-offset: 2px;
}

.form-message {
  min-height: 1.2rem;
  margin: 0;
  font-weight: 700;
}

.form-message.error {
  color: var(--danger);
}

.form-message.success {
  color: var(--success);
}

.checklist-grid {
  margin-top: 1rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.checklist-grid article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

.checklist-grid ul {
  margin: 0;
  padding-inline-start: 1rem;
}

.campaign-grid .card p {
  margin-bottom: 0;
}

.final-cta {
  text-align: center;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1rem 0;
  background: #fff;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.mini-hero {
  padding: 3.2rem 0 1.8rem;
}

.surface-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: #e8f8ef;
  color: var(--success);
  font-weight: 700;
}

.summary-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.metric-box {
  background: #f9fbff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.8rem;
}

.next-steps li {
  margin-bottom: 0.4rem;
}

.kit-grid {
  margin-top: 1rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.copy-block {
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 12px;
  padding: 0.8rem;
  overflow-x: auto;
  white-space: pre-wrap;
  margin: 0.5rem 0 0;
}

.copy-btn {
  margin-top: 0.6rem;
}

.posts-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.post-tag {
  margin: 0 0 0.45rem;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.92rem;
}

.article-shell {
  max-width: 860px;
}

.article-shell ul {
  margin: 0.5rem 0 1rem;
  padding-inline-start: 1.2rem;
}

.article-shell li {
  margin-bottom: 0.45rem;
}

.article-shell code {
  font-family: "Courier New", monospace;
  background: #eef2ff;
  color: #1f2a56;
  border-radius: 6px;
  padding: 0.1rem 0.35rem;
}

.article-note {
  margin-top: 1rem;
}

@media (max-width: 980px) {
  .hero-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .form-grid,
  .two-col,
  .card-grid,
  .checklist-grid,
  .summary-grid,
  .kit-grid,
  .posts-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    position: absolute;
    top: 74px;
    inset-inline: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 1rem;
  }

  .site-nav.open {
    display: flex;
  }

  .menu-toggle {
    display: inline-flex;
  }
}