:root {
  --page-bg: #e3edff;
  --page-bg-soft: #eaf1ff;
  --surface: #ffffff;
  --surface-soft: #f6f9ff;
  --primary: #1e63ff;
  --primary-deep: #1645b5;
  --secondary: #ff8a24;
  --success: #1e9a5f;
  --text: #0f1c2e;
  --text-muted: #2b4c75;
  --border: #d4deef;
  --border-strong: #bfd0ea;
  --page-bg-rgb: 227, 237, 255;
  --page-bg-soft-rgb: 234, 241, 255;
  --surface-rgb: 255, 255, 255;
  --primary-rgb: 30, 99, 255;
  --primary-deep-rgb: 22, 69, 181;
  --secondary-rgb: 255, 138, 36;
  --text-rgb: 15, 28, 46;
  --shadow-soft: 0 16px 40px rgba(15, 28, 46, 0.08);
  --shadow-card: 0 18px 48px rgba(22, 69, 181, 0.08);
  --radius-lg: 30px;
  --radius-md: 22px;
  --radius-sm: 16px;
  --focus-width: 760px;
  --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;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: "Inter", "Noto Sans Thai", system-ui, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(var(--page-bg-soft-rgb), 0.9), transparent 26%),
    radial-gradient(circle at top right, rgba(var(--primary-rgb), 0.12), transparent 34%),
    linear-gradient(180deg, rgba(var(--page-bg-soft-rgb), 0.98) 0%, var(--page-bg) 42%, rgba(var(--surface-rgb), 0.98) 100%);
}

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

.landing-page {
  min-height: 100vh;
}

.container {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.narrow {
  max-width: 760px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(var(--primary-deep-rgb), 0.12);
  backdrop-filter: blur(16px);
  background: rgba(var(--surface-rgb), 0.78);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 72px;
}

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

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: var(--surface);
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  box-shadow: var(--shadow-soft);
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.brand-title {
  font-size: 16px;
  font-weight: 800;
}

.brand-subtitle {
  color: var(--text-muted);
  font-size: 12px;
}

.header-actions,
.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero-actions,
.cta-actions {
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 800;
  line-height: 1;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn-small {
  min-height: 44px;
  padding: 0 16px;
  font-size: 14px;
}

.btn-primary {
  color: var(--surface);
  background: var(--secondary);
  box-shadow: 0 12px 28px rgba(var(--secondary-rgb), 0.24);
}

.btn-secondary {
  color: var(--primary);
  border-color: var(--border-strong);
  background: rgba(var(--surface-rgb), 0.9);
}

.btn-ghost {
  color: var(--primary-deep);
  border-color: rgba(var(--primary-rgb), 0.2);
  background: rgba(var(--surface-rgb), 0.36);
}

.hero {
  padding: var(--space-6) 0 var(--space-7);
}

.hero-shell {
  display: grid;
  gap: var(--space-5);
  max-width: var(--focus-width);
  margin: 0 auto;
}

.hero-copy,
.section-pain,
.section-shift,
.section-proof,
.section-cta,
.section-story {
  position: relative;
}

.hero-copy {
  text-align: center;
}

.eyebrow,
.section-kicker,
.story-kicker,
.scene-label {
  margin: 0 0 var(--space-2);
  color: var(--primary-deep);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.section-kicker,
.story-kicker {
  display: table;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.hero-copy h1,
.section-head h2,
.section-story h2,
.proof-copy h2,
.cta-box h2 {
  margin: 0;
  font-size: clamp(32px, 7vw, 50px);
  line-height: 1.04;
  letter-spacing: -0.03em;
}

.section-head h2,
.section-story h2,
.proof-copy h2,
.cta-box h2 {
  font-size: clamp(28px, 6vw, 44px);
}

.hero-lead,
.story-body,
.section-head + *,
.proof-copy p,
.cta-box p,
.pain-card p,
.shift-item p,
.proof-card p,
.footer-copy {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.75;
}

.hero-lead {
  margin: var(--space-3) 0 0;
  max-width: 32ch;
  margin-left: auto;
  margin-right: auto;
}

.hero-note {
  margin: var(--space-3) 0 0;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  max-width: 46ch;
  margin-left: auto;
  margin-right: auto;
}

.hero-scene {
  display: grid;
  gap: var(--space-3);
  max-width: var(--focus-width);
  margin: 0 auto;
}

.scene-card,
.pain-card,
.shift-item,
.proof-card,
.cta-box {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.scene-card {
  padding: var(--space-4);
}

.scene-card h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.3;
}

.scene-card-chaos {
  color: var(--surface);
  background: linear-gradient(145deg, var(--primary-deep), var(--text));
  border-color: rgba(var(--primary-deep-rgb), 0.46);
}

.scene-card-chaos .scene-label {
  color: rgba(var(--surface-rgb), 0.74);
}

.scene-card-clarity {
  background: linear-gradient(180deg, rgba(var(--surface-rgb), 0.97), rgba(var(--page-bg-soft-rgb), 0.96));
}

.scene-list {
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.scene-list li {
  position: relative;
  padding-left: 20px;
  line-height: 1.7;
}

.scene-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: currentColor;
  opacity: 0.72;
}

.section {
  padding: var(--space-8) 0 0;
}

.section-story {
  padding-top: var(--space-6);
}

.story-body {
  margin: var(--space-4) 0 0;
}

.section-story .narrow {
  text-align: center;
}

.section-story .story-body {
  max-width: 40ch;
  margin-left: auto;
  margin-right: auto;
}

.story-body.strong {
  color: var(--text);
  font-weight: 700;
}

.section-head {
  max-width: var(--focus-width);
  margin-bottom: var(--space-5);
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.pain-grid,
.proof-points,
.shift-list {
  display: grid;
  gap: var(--space-4);
  max-width: var(--focus-width);
  margin-left: auto;
  margin-right: auto;
}

.pain-card,
.shift-item,
.proof-card,
.cta-box {
  padding: var(--space-5);
  background: rgba(var(--surface-rgb), 0.94);
}

.pain-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.pain-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  margin-bottom: var(--space-4);
  padding: 0 12px;
  border-radius: 999px;
  color: var(--primary-deep);
  background: var(--page-bg-soft);
  font-size: 13px;
  font-weight: 800;
}

.pain-card h3,
.shift-item h3,
.proof-card h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.32;
}

.pain-card p,
.shift-item p,
.proof-card p {
  margin: var(--space-3) 0 0;
}

.pain-card h3,
.pain-card p {
  max-width: 34ch;
}

.shift-shell,
.proof-shell {
  display: grid;
  gap: var(--space-5);
}

.proof-copy {
  max-width: var(--focus-width);
  margin: 0 auto;
  text-align: center;
}

.proof-copy p {
  margin: var(--space-4) 0 0;
}

.cta-box {
  background:
    radial-gradient(circle at top right, rgba(var(--primary-rgb), 0.1), transparent 28%),
    linear-gradient(180deg, rgba(var(--surface-rgb), 0.98), rgba(var(--page-bg-soft-rgb), 0.96));
  max-width: var(--focus-width);
  margin: 0 auto;
  text-align: center;
}

.cta-box p {
  margin: var(--space-4) 0 0;
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
}

.site-footer {
  padding: var(--space-8) 0 var(--space-7);
}

.footer-shell {
  display: grid;
  gap: var(--space-5);
  max-width: var(--focus-width);
  margin-left: auto;
  margin-right: auto;
  padding-top: var(--space-5);
  border-top: 1px solid rgba(var(--primary-deep-rgb), 0.12);
}

.footer-copy {
  margin: var(--space-4) 0 0;
  max-width: 36ch;
}

.footer-links {
  display: grid;
  gap: var(--space-3);
}

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

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }

  .header-row {
    min-height: 80px;
  }

  .hero {
    padding-top: var(--space-6);
  }

  .hero-shell {
    gap: var(--space-5);
  }

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