:root {
  --bg: #f4f7fc;
  --panel: rgba(255, 255, 255, 0.86);
  --panel-strong: #ffffff;
  --panel-border: rgba(18, 40, 82, 0.09);
  --text: #0f2241;
  --muted: #5f6f8d;
  --accent: #1f66e5;
  --accent-soft: #e8f0ff;
  --accent-dark: #114bb2;
  --shadow: 0 24px 56px rgba(27, 58, 110, 0.08);
  --shadow-soft: 0 14px 34px rgba(27, 58, 110, 0.06);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top left, #eef4ff 0%, #f7f9fd 40%, #f3f6fb 100%);
}

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

img {
  max-width: 100%;
}

.site-bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(31, 102, 229, 0.10), transparent 24%),
    radial-gradient(circle at 100% 10%, rgba(88, 173, 255, 0.10), transparent 20%);
  pointer-events: none;
  z-index: -1;
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.narrow {
  width: min(960px, 100%);
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
}

.panel-tinted {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(238, 245, 255, 0.95));
}

.site-header {
  padding: 24px 0 8px;
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 24px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(18, 40, 82, 0.08);
  border-radius: 22px;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, #2f8bff, #1358d8);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.24);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 7px 6px 7px 6px;
  border: 2px solid rgba(255, 255, 255, 0.86);
  border-top: 0;
  border-radius: 3px;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.nav-link,
.footer-nav a,
.breadcrumbs a,
.related-link {
  color: var(--muted);
  transition: color 0.18s ease, transform 0.18s ease;
}

.nav-link:hover,
.footer-nav a:hover,
.breadcrumbs a:hover,
.related-link:hover {
  color: var(--accent);
}

.primary-button,
.secondary-button,
.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 12px;
  font-weight: 700;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  cursor: pointer;
}

.primary-button,
.nav-cta {
  color: #fff;
  background: linear-gradient(135deg, #246df0, #1455d3);
  box-shadow: 0 12px 24px rgba(31, 102, 229, 0.22);
}

.secondary-button {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.84);
  border-color: rgba(31, 102, 229, 0.2);
}

.primary-button:hover,
.secondary-button:hover,
.nav-cta:hover {
  transform: translateY(-1px);
}

.button-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.button-wide {
  width: 100%;
}

.small-button {
  min-height: 40px;
  padding: 0 14px;
  font-size: 0.95rem;
}

.hero-section {
  padding: 48px 0 24px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 36px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.6rem, 5vw, 4.35rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.hero-text,
.detail-header p,
.section-heading p,
.value-strip p,
.basic-article p,
.sidebar-panel p {
  color: var(--muted);
  line-height: 1.7;
}

.hero-text {
  max-width: 560px;
  margin: 18px 0 24px;
  font-size: 1.08rem;
}

.hero-card-wrap {
  padding: 24px 0;
}

.mock-email {
  padding: 24px;
  max-width: 540px;
  margin-left: auto;
}

.window-chrome {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}

.window-chrome span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #ffd470;
}

.window-chrome span:nth-child(2) {
  background: #ff9564;
}

.window-chrome span:nth-child(3) {
  background: #77d38b;
}

.mock-line,
.subject-row {
  font-size: 0.96rem;
  color: var(--muted);
  margin-bottom: 10px;
}

.mock-copy,
.email-preview,
.template-body {
  font-size: 0.98rem;
  line-height: 1.72;
  white-space: pre-wrap;
}

.section {
  padding: 24px 0;
}

.section-compact {
  padding-bottom: 56px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.section-heading h2,
.info-panel h2,
.sidebar-panel h2,
.prose-panel h2,
.cta-banner h2,
.detail-header h1,
.basic-article h1 {
  margin: 0;
  font-size: clamp(1.6rem, 2.4vw, 2.25rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.category-grid,
.popular-grid,
.steps-grid,
.detail-panels,
.resource-grid {
  display: grid;
  gap: 18px;
}

.category-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.popular-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.steps-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.resource-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 18px;
}

.category-card,
.popular-card,
.step-card,
.resource-card {
  padding: 22px;
}

.category-card strong,
.popular-card span:first-child,
.step-card h3,
.detail-header h1 {
  letter-spacing: -0.02em;
}

.category-card {
  display: grid;
  gap: 10px;
}

.category-card p,
.step-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.resource-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.category-icon {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(36, 109, 240, 0.18), rgba(20, 85, 211, 0.06));
  position: relative;
}

.category-icon::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 2px solid var(--accent);
  border-top-width: 3px;
  border-radius: 6px;
}

.generator-card {
  padding: 24px;
}

.generator-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 18px;
}

.generator-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.generator-form label {
  display: grid;
  gap: 8px;
}

.generator-form label:last-of-type,
.generator-form .button-wide {
  grid-column: 1 / -1;
}

.generator-form span {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
}

.generator-form input,
.generator-form select {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid rgba(18, 40, 82, 0.12);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  font: inherit;
}

.generator-preview {
  display: grid;
  gap: 14px;
  padding: 22px;
}

.preview-copy {
  justify-self: end;
}

.popular-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.resource-card {
  display: block;
  border-radius: var(--radius-md);
  border: 1px solid rgba(18, 40, 82, 0.08);
  background: rgba(255, 255, 255, 0.8);
}

.resource-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1rem;
}

.arrow {
  color: var(--accent);
  font-size: 1.25rem;
}

.step-card {
  position: relative;
  overflow: hidden;
}

.step-index {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, #246df0, #1455d3);
  color: #fff;
  font-weight: 800;
}

.value-strip {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 22px;
  padding: 28px;
}

.value-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

.value-points span,
.variables-list span {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 14px;
  background: rgba(232, 240, 255, 0.92);
  border: 1px solid rgba(31, 102, 229, 0.14);
  border-radius: 999px;
  color: var(--accent-dark);
  font-weight: 700;
}

.site-footer {
  padding: 18px 0 36px;
}

.footer-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 18px;
  align-items: center;
  padding: 26px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(18, 40, 82, 0.08);
  border-radius: 24px;
}

.footer-brand p,
.footer-copy {
  margin: 8px 0 0;
  color: var(--muted);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.detail-section {
  padding-top: 18px;
  padding-bottom: 40px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.94rem;
}

.breadcrumb-sep {
  color: rgba(95, 111, 141, 0.55);
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 304px;
  gap: 22px;
  align-items: start;
}

.detail-header {
  margin-bottom: 18px;
}

.template-card,
.variation-card,
.prose-panel,
.cta-banner,
.basic-article {
  padding: 24px;
}

.template-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.subject-badge {
  color: var(--muted);
}

.tabs-header {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 22px 0 12px;
}

.tab-button {
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(18, 40, 82, 0.08);
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.tab-button.is-active {
  background: rgba(31, 102, 229, 0.12);
  border-color: rgba(31, 102, 229, 0.22);
  color: var(--accent-dark);
}

.variation-card {
  display: grid;
  gap: 16px;
}

.detail-panels {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 22px;
}

.info-panel,
.sidebar-panel {
  padding: 22px;
}

.info-panel ul,
.sidebar-panel ul {
  margin: 14px 0 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.7;
}

.prose-panel {
  margin-top: 22px;
}

.prose-panel p {
  margin: 0 0 18px;
  color: var(--muted);
  line-height: 1.8;
}

.variables-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.cta-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 22px;
  background: linear-gradient(135deg, rgba(242, 247, 255, 0.96), rgba(232, 240, 255, 0.9));
}

.sidebar {
  display: grid;
  gap: 16px;
}

.sidebar-panel h2 {
  font-size: 1.16rem;
}

.related-links {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.related-link {
  font-weight: 600;
}

.sidebar-cta {
  background: linear-gradient(180deg, rgba(244, 248, 255, 0.96), rgba(232, 240, 255, 0.96));
}

.basic-article .lead {
  margin: 0 0 18px;
}

.generator-notes {
  margin-top: 20px;
}

.not-found-card {
  text-align: center;
}

.not-found-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 24px;
}

@media (max-width: 1080px) {
  .category-grid,
  .popular-grid,
  .resource-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-grid,
  .hero-grid,
  .value-strip,
  .generator-grid,
  .footer-shell {
    grid-template-columns: 1fr;
  }

  .detail-grid {
    gap: 18px;
  }

  .sidebar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .nav-shell,
  .top-nav {
    flex-direction: column;
    align-items: stretch;
  }

  .top-nav {
    gap: 10px;
  }

  .nav-link,
  .nav-cta {
    text-align: center;
  }

  .hero-section {
    padding-top: 28px;
  }

  .steps-grid,
  .detail-panels,
  .sidebar,
  .category-grid,
  .popular-grid,
  .resource-grid,
  .generator-form {
    grid-template-columns: 1fr;
  }

  .cta-banner,
  .template-card-top,
  .section-heading {
    flex-direction: column;
    align-items: stretch;
  }

  .footer-shell {
    text-align: center;
  }

  h1 {
    font-size: clamp(2.15rem, 11vw, 3.2rem);
  }
}