:root {
  --bg: #f7f7f4;
  --panel: #ffffff;
  --text: #111111;
  --muted: #666666;
  --border: #deded8;
  --soft: #eeeeea;
  --black: #050505;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 72px;
  padding: 0 6vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(247, 247, 244, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.08em;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 16px;
}

nav a:hover {
  color: var(--text);
}

.hero {
  min-height: calc(100vh - 72px);
  padding: 72px 6vw;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-inner {
  max-width: 1240px;
  text-align: center;
}

.hero-logo {
  width: 240px;
  height: 240px;
  object-fit: contain;
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(34px, 5.5vw, 68px);
  line-height: 1;
  letter-spacing: -0.045em;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1;
  letter-spacing: -0.045em;
}

h3 {
  margin-bottom: 14px;
  font-size: 24px;
  letter-spacing: -0.025em;
}

.hero-text {
  max-width: 720px;
  margin: 0 auto 34px;
  color: var(--muted);
  font-size: 19px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  border: 1px solid var(--black);
}

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

.btn.secondary {
  background: transparent;
  color: var(--black);
}

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

.section {
  padding: 88px 6vw;
  border-top: 1px solid var(--border);
}

.section-head {
  max-width: 760px;
  margin-bottom: 36px;
}

.section-head p {
  color: var(--muted);
  font-size: 18px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  min-height: 280px;
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 28px;
  display: flex;
  flex-direction: column;
}

.card:hover {
  border-color: #b8b8b0;
  transform: translateY(-2px);
}

.card-label {
  width: fit-content;
  margin-bottom: 28px;
  padding: 7px 10px;
  background: var(--soft);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card p {
  color: var(--muted);
  margin-bottom: 28px;
}

.card-link {
  margin-top: auto;
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
}

.card-link:hover {
  text-decoration: underline;
}

.split-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: center;
}

.split-section p {
  color: var(--muted);
  font-size: 18px;
}

.contact-section {
  max-width: 920px;
}

.contact-section p {
  color: var(--muted);
  font-size: 18px;
}

.contact-section a {
  color: var(--text);
  font-weight: 800;
}

.rf-hero {
  min-height: 72vh;
}

footer {
  padding: 28px 6vw;
  border-top: 1px solid var(--border);
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 14px;
}

@media (max-width: 900px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .split-section {
    grid-template-columns: 1fr;
  }

  .site-header {
    padding: 0 22px;
  }

  nav {
    gap: 14px;
  }

  nav a {
    font-size: 13px;
  }

  .hero,
  .section {
    padding-left: 22px;
    padding-right: 22px;
  }
}

@media (max-width: 560px) {
  .site-header {
    height: auto;
    padding-top: 14px;
    padding-bottom: 14px;
    flex-direction: column;
    gap: 12px;
  }

  .hero {
    min-height: auto;
    padding-top: 56px;
  }

  .hero-logo {
    width: 110px;
    height: 110px;
  }

  h1 {
    font-size: 42px;
  }

  footer {
    flex-direction: column;
  }
}