:root {
  color-scheme: light;
  --color-ink: #10233f;
  --color-muted: #5d6f86;
  --color-paper: #ffffff;
  --color-soft: #f7f9fc;
  --color-soft-blue: #edf6ff;
  --color-line: #dbe6f2;
  --color-primary: #2477e8;
  --color-primary-dark: #1759b8;
  --color-mint: #16b99f;
  --color-yellow: #ffe766;
  --color-coral: #e94560;
  --shadow-soft: 0 18px 45px rgba(16, 35, 63, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --container: 1120px;
  font-family: Poppins, "Noto Sans Thai", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, #f7fbff 0%, #ffffff 44%, #f7f9fc 100%);
  color: var(--color-ink);
  font-family: inherit;
  line-height: 1.5;
}

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

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px max(18px, calc((100vw - var(--container)) / 2));
  border-bottom: 1px solid rgba(219, 230, 242, 0.82);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.brand__logo {
  width: 142px;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-nav a {
  min-height: 38px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  font-weight: 800;
  text-decoration: none;
}

.site-nav a:focus-visible,
.site-nav a:hover {
  background: var(--color-soft-blue);
  color: var(--color-primary);
  outline: none;
}

.section {
  width: min(var(--container), calc(100% - 36px));
  margin: 0 auto;
  padding: 54px 0;
}

.hero {
  display: grid;
  gap: 30px;
  align-items: center;
  min-height: calc(100svh - 74px);
  padding-top: 34px;
}

.hero__content {
  max-width: 650px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 11ch;
  margin-bottom: 18px;
  font-size: 2.75rem;
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: 2rem;
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.12rem;
  line-height: 1.2;
}

.hero__description,
.section__intro p,
.feature-card p,
.waitlist-form label,
figcaption,
.site-footer {
  color: var(--color-muted);
}

.hero__description {
  max-width: 58ch;
  margin-bottom: 26px;
  font-size: 1.08rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 900;
  text-decoration: none;
  transition: background 0.18s ease, box-shadow 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

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

.button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(36, 119, 232, 0.28);
  outline-offset: 3px;
}

.button--primary {
  padding: 0 24px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-mint));
  color: #ffffff;
  box-shadow: 0 12px 28px rgba(36, 119, 232, 0.24);
}

.button--primary:hover {
  box-shadow: 0 16px 34px rgba(36, 119, 232, 0.3);
}

.button--secondary {
  width: 100%;
  padding: 0 20px;
  background: var(--color-primary);
  color: #ffffff;
}

.button--secondary:hover {
  background: var(--color-primary-dark);
}

.hero__media {
  justify-self: center;
  width: min(430px, 100%);
}

.hero__media img {
  width: 100%;
  filter: drop-shadow(0 28px 42px rgba(16, 35, 63, 0.18));
}

.section__intro {
  max-width: 680px;
  margin-bottom: 24px;
}

.waitlist {
  display: grid;
  gap: 20px;
  align-items: start;
  padding: 28px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 92% 18%, rgba(255, 231, 102, 0.34), transparent 28%),
    linear-gradient(135deg, #ffffff 0%, #f8fcff 100%);
  box-shadow: var(--shadow-soft);
}

.waitlist-form {
  display: grid;
  gap: 10px;
}

.waitlist-form label {
  font-weight: 800;
}

.waitlist-form__row {
  display: grid;
  gap: 10px;
}

.waitlist-form input {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--color-ink);
}

.waitlist-form input[aria-invalid="true"] {
  border-color: var(--color-coral);
}

.form-message {
  min-height: 1.5em;
  margin: 0;
  color: var(--color-muted);
  font-weight: 800;
}

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

.form-message.is-success {
  color: #147862;
}

.feature-grid,
.preview-grid {
  display: grid;
  gap: 14px;
}

.feature-card {
  min-height: 198px;
  padding: 20px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-paper);
  box-shadow: 0 10px 24px rgba(16, 35, 63, 0.06);
}

.feature-card span {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  border-radius: 12px;
  background: var(--color-soft-blue);
  color: var(--color-primary);
  font-weight: 900;
}

.feature-card:nth-child(2) span,
.feature-card:nth-child(5) span {
  background: #e8f8f4;
  color: #147862;
}

.feature-card:nth-child(3) span,
.feature-card:nth-child(6) span {
  background: #fff4d2;
  color: #8c6412;
}

.feature-card:nth-child(4) span {
  background: #ffe8ee;
  color: #b92d46;
}

.preview {
  padding-bottom: 70px;
}

.preview-grid figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-paper);
  box-shadow: 0 10px 24px rgba(16, 35, 63, 0.06);
}

.preview-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

figcaption {
  padding: 12px 14px 14px;
  font-size: 0.92rem;
  font-weight: 800;
}

.site-footer {
  padding: 24px 18px 30px;
  border-top: 1px solid var(--color-line);
  text-align: center;
}

.site-footer p {
  margin: 0;
}

@media (min-width: 720px) {
  .brand__logo {
    width: 184px;
  }

  .section {
    padding: 72px 0;
  }

  h1 {
    font-size: 4rem;
  }

  h2 {
    font-size: 2.55rem;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.78fr);
    gap: 44px;
  }

  .waitlist {
    grid-template-columns: minmax(0, 0.86fr) minmax(320px, 0.82fr);
    padding: 34px;
  }

  .waitlist-form__row {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .button--secondary {
    width: auto;
  }

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

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

@media (min-width: 980px) {
  h1 {
    font-size: 4.9rem;
  }

  h2 {
    font-size: 3rem;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}