:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #5c5c5c;
  --border: #e5e5e5;
  --accent: #1b4332;
  --accent-hover: #2d6a4f;
  --accent-soft: #e8f5e9;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  --max: 1080px;
  --header-control-h: 44px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}

a {
  color: var(--accent);
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

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

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.header-img {
  height: var(--header-control-h);
  width: auto;
  display: block;
  object-fit: contain;
}

header .header-inner > .btn-primary {
  height: var(--header-control-h);
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  line-height: 1;
  box-sizing: border-box;
  white-space: nowrap;
}

nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  margin-left: 24px;
}

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

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Hero */
.hero {
  padding: 72px 0 56px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  max-width: 720px;
  margin: 0 auto 16px;
  font-weight: 700;
}

.hero .sub {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 32px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  align-items: center;
}

.hero-note {
  margin-top: 16px;
  font-size: 0.875rem;
  color: var(--muted);
}

/* Pillars */
.pillars {
  padding: 48px 0 64px;
}

.pillars h2 {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: 32px;
  letter-spacing: -0.02em;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--accent);
}

.card p {
  color: var(--muted);
  font-size: 0.95rem;
}

/* How it works */
.how {
  padding: 64px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.how h2 {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: 40px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.step-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.35;
  line-height: 1;
  margin-bottom: 8px;
}

.step h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.step p {
  font-size: 0.9rem;
  color: var(--muted);
}

/* Sample */
.sample {
  padding: 64px 0;
  text-align: center;
}

.sample p {
  color: var(--muted);
  max-width: 520px;
  margin: 12px auto 20px;
}

/* Waitlist */
.waitlist {
  padding: 64px 0 80px;
  background: var(--accent-soft);
}

.waitlist-inner {
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

.waitlist h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.waitlist > .container > .waitlist-inner > p {
  color: var(--muted);
  margin-bottom: 28px;
  font-size: 0.95rem;
}

form {
  text-align: left;
  background: var(--surface);
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

input,
select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  margin-bottom: 16px;
  font-family: inherit;
}

input:focus,
select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 0;
}

form .btn {
  width: 100%;
  margin-top: 8px;
  padding: 14px;
}

.form-msg {
  margin-top: 16px;
  padding: 12px;
  border-radius: 8px;
  font-size: 0.9rem;
  display: none;
}

.form-msg.success {
  display: block;
  background: #e8f5e9;
  color: #1b4332;
}

.form-msg.error {
  display: block;
  background: #ffebee;
  color: #b71c1c;
}

/* Footer */
footer {
  padding: 40px 0 32px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.footer-logo {
  width: auto;
  min-height: 300px;
  height: 300px;
  max-width: 100%;
  object-fit: contain;
  display: block;
  margin-bottom: 8px;
}

footer p {
  margin: 0;
}

@media (max-width: 640px) {
  nav { display: none; }
  .hero { padding-top: 48px; }
  .header-img,
  header .header-inner > .btn-primary {
    height: 40px;
  }
}