:root {
  color-scheme: light dark;
  --bg: #0b0f14;
  --surface: #141a22;
  --surface-alt: #1a222d;
  --text: #e8eef5;
  --muted: #9aa8b8;
  --accent: #00e5c8;
  --accent-dim: rgba(0, 229, 200, 0.12);
  --border: #243040;
  --danger: #ff5a6e;
  --max: 1040px;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fb;
    --surface: #ffffff;
    --surface-alt: #eef2f7;
    --text: #111820;
    --muted: #4a5568;
    --accent: #008f7a;
    --accent-dim: rgba(0, 143, 122, 0.1);
    --border: #d8e0ea;
    --danger: #c53030;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}
a {
  color: var(--accent);
}
a:hover {
  text-decoration: none;
}
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}
.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
.logo span {
  color: var(--accent);
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  font-size: 0.95rem;
}
.site-nav a {
  color: var(--muted);
  text-decoration: none;
}
.site-nav a:hover {
  color: var(--accent);
}
.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}
@media (min-width: 800px) {
  .hero {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  line-height: 1.15;
  margin: 0 0 1rem;
  font-weight: 700;
}
.lede {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 1.25rem;
}
.brand-line {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.5rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}
.btn-primary {
  background: var(--accent);
  color: #04120f;
}
.btn-primary:hover {
  filter: brightness(1.05);
}
.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.section-title {
  font-size: 1.35rem;
  margin: 0 0 1rem;
  font-weight: 600;
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 720px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem 1.35rem;
}
.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.qr-card {
  text-align: center;
}
.qr-wrap {
  display: inline-flex;
  padding: 0.75rem;
  background: #fff;
  border-radius: 12px;
  margin: 0.5rem 0 1rem;
}
.qr-wrap canvas,
.qr-wrap img {
  display: block;
  width: 200px;
  height: 200px;
}
.price-tag {
  font-size: 2rem;
  font-weight: 700;
  margin: 0.25rem 0;
}
.price-sub {
  color: var(--muted);
  font-size: 0.9rem;
}
.deposit-highlight {
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 1rem 1.15rem;
  margin: 1rem 0;
}
.deposit-highlight strong {
  color: var(--accent);
}
.form-section-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 1.25rem 0 0.65rem;
  color: var(--text);
}
.form-section-title:first-of-type {
  margin-top: 0;
}
.form-section-hint {
  font-size: 0.88rem;
  color: var(--muted);
  margin: -0.35rem 0 0.75rem;
  line-height: 1.45;
}
.label-optional {
  font-weight: 400;
  color: var(--muted);
}
.form-row-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 0.85rem;
  margin-bottom: 0.85rem;
}
@media (min-width: 560px) {
  .form-row-2 {
    grid-template-columns: 1fr 1fr;
    gap: 0.85rem;
  }
}
form.preorder-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin: 0 0 0.35rem;
  color: var(--muted);
}
form.preorder-form input[type="email"],
form.preorder-form input[type="text"],
form.preorder-form input[type="tel"],
form.preorder-form select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 0.85rem;
}
form.preorder-form input:focus,
form.preorder-form select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
form.preorder-form select {
  cursor: pointer;
}
.checkbox-row {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  font-size: 0.88rem;
  color: var(--muted);
  margin: 0.5rem 0 1rem;
}
.checkbox-row input {
  margin-top: 0.25rem;
}
.pay-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0 0 1rem;
}
.pay-option {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-alt);
  cursor: pointer;
  font-size: 0.92rem;
}
.pay-option:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.pay-option input {
  margin-top: 0.2rem;
}
.pay-option strong {
  display: block;
  color: var(--text);
  font-weight: 600;
}
.pay-option span.sub {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 0.15rem;
}
.pay-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.pay-actions .btn {
  width: 100%;
}
.form-msg {
  font-size: 0.9rem;
  margin: 0.75rem 0 0;
}
.form-msg.err {
  color: var(--danger);
}
.form-msg.ok {
  color: var(--accent);
}
.note {
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1rem;
  background: var(--surface);
  margin: 1rem 0;
  font-size: 0.92rem;
  color: var(--muted);
}
footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
}
footer p {
  margin: 0 0 0.5rem;
}
ul.features {
  margin: 0;
  padding-left: 1.2rem;
}
ul.features li {
  margin-bottom: 0.4rem;
}