:root {
  --brand-primary: #ff6a18;
  --brand-ink: #151b24;
  --brand-ink-2: #1e2733;
  --brand-muted: #6e7682;
  --brand-line: #d9dee4;
  --bg: #f6f8fb;
  --white: #ffffff;

  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  --radius: 10px;

  --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;

  --fs-1: 12px;
  --fs-2: 14px;
  --fs-3: 16px;
  --fs-4: 18px;
  --fs-5: 20px;
  --fs-6: 24px;
  --fs-7: 28px;
  --fs-8: 36px;
  --fs-9: 44px;
}

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

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--brand-ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

h1, h2, h3 {
  line-height: 1.2;
  margin: 0 0 var(--space-5);
}

h1 {
  font-size: var(--fs-9);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--fs-8);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--fs-6);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--white);
  border-bottom: 1px solid var(--brand-line);
  transition: transform 0.2s ease, background 0.2s ease;
}

.site-header.is-scrolled {
  backdrop-filter: saturate(120%) blur(6px);
}

.header-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--brand-ink);
  text-decoration: none;
}

.brand-logo {
  width: 160px;
  max-height: 88px;
  object-fit: cover;
}

.brand-name {
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: var(--fs-6);
}

.site-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: 0;
  margin: 0;
}

.site-nav a {
  color: var(--brand-ink);
  font-size: var(--fs-3);
  padding: var(--space-2) var(--space-3);
  border-radius: 6px;
}

.site-nav a:hover {
  background: var(--bg);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-3);
  border: 1px solid var(--brand-line);
  background: var(--white);
  border-radius: 8px;
}

.nav-toggle-bar {
  width: 20px;
  height: 2px;
  background: var(--brand-ink);
}

/* Hero */
.hero {
  background: radial-gradient(1200px 600px at 10% 0%, rgba(255,106,24,0.06), transparent 60%), var(--bg);
  padding: var(--space-9) 0 var(--space-8);
}

.hero-wrap {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-8);
  align-items: center;
}

.hero-title {
  margin-bottom: var(--space-4);
}

.hero-lead {
  font-size: var(--fs-5);
  color: var(--brand-muted);
}

.hero-actions {
  margin-top: var(--space-6);
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-card {
  background: var(--white);
  border: 1px solid var(--brand-line);
  border-radius: var(--radius);
  padding: var(--space-7);
  box-shadow: 0 6px 18px rgba(21,27,36,0.06);
}

.hero-badge {
  display: inline-block;
  font-size: var(--fs-2);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--brand-ink);
  background: rgba(255,106,24,0.1);
  border: 1px solid rgba(255,106,24,0.25);
  border-radius: 999px;
  padding: 6px 10px;
  margin-bottom: var(--space-5);
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-4);
}

.checklist li {
  position: relative;
  padding-left: 28px;
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 16px;
  height: 16px;
  background: var(--brand-primary);
  border-radius: 4px;
  box-shadow: inset 0 0 0 4px #fff;
}

/* Intro */
.intro {
  padding: var(--space-8) 0;
}

.content p {
  margin: 0 0 var(--space-5);
  color: var(--brand-ink-2);
}

/* Workflow */
.workflow {
  padding: var(--space-8) 0;
}

.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-6);
}

.step {
  background: var(--white);
  border: 1px solid var(--brand-line);
  border-radius: var(--radius);
  padding: var(--space-6);
  min-height: 220px;
  display: flex;
  flex-direction: column;
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--brand-primary);
  color: var(--white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: var(--space-4);
}

/* Patterns */
.patterns {
  padding: var(--space-8) 0;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.card {
  background: var(--white);
  border: 1px solid var(--brand-line);
  border-radius: var(--radius);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: transform 0.15s ease;
}

.card:hover {
  transform: translateY(-2px);
}

.card-link {
  font-weight: 600;
  align-self: start;
}

/* Toolkit */
.toolkit {
  padding: var(--space-8) 0;
  background: var(--white);
  border-top: 1px solid var(--brand-line);
  border-bottom: 1px solid var(--brand-line);
}

/* Empty sections */
.recent-posts, .partners {
  padding: var(--space-8) 0;
}

.post-grid, .logo-strip {
  display: grid;
  gap: var(--space-6);
  min-height: 64px;
  border: 1px dashed var(--brand-line);
  border-radius: var(--radius);
  background: #fff;
  padding: var(--space-6);
}

/* Footer */
.site-footer {
  background: var(--white);
  border-top: 1px solid var(--brand-line);
}

.footer-wrap {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-6);
  align-items: center;
  padding: var(--space-7) 0;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.footer-logo {
 width: 185px;
  max-height: 64px;
  object-fit: cover;
}

.footer-name {
  font-weight: 700;
}

.footer-nav {
  display: inline-flex;
  gap: var(--space-5);
}

.footer-nav a {
  color: var(--brand-ink);
  font-size: var(--fs-3);
}

.footer-note {
  grid-column: 1 / -1;
  color: var(--brand-muted);
  margin: 0;
  font-size: var(--fs-3);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 10px;
  font-weight: 600;
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: var(--brand-primary);
  color: var(--white);
}

.btn-primary:hover {
  filter: brightness(0.96);
  text-decoration: none;
}

.btn-ghost {
  background: var(--white);
  border-color: var(--brand-line);
  color: var(--brand-ink);
}

.btn-ghost:hover {
  background: var(--bg);
  text-decoration: none;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-wrap {
    grid-template-columns: 1fr;
  }
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .header-wrap {
    height: 60px;
  }
  .site-nav {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--brand-line);
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }
  .site-nav ul {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-6);
    gap: var(--space-3);
  }
  .nav-toggle {
    display: inline-flex;
  }
  .site-header.nav-open .site-nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .steps {
    grid-template-columns: 1fr;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
  h1 {
    font-size: 34px;
  }
  h2 {
    font-size: 26px;
  }
}