*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --ink: #0a0a0a;
  --on-dark: #ffffff;
  --canvas-cream: #fbfbf5;
  --canvas-light: #ffffff;
  --surface-dark: #1e2c31;
  --surface-night: #000000;
  --aloe: #c1fbd4;
  --pistachio: #d4f9e0;
  --muted: #71717a;
  --hairline: #e4e4e7;
  --link-cool: #99b3ad;
  --radius-lg: 20px;
  --radius-md: 12px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.08);
  --font-display: "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-body: "PingFang SC", "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--canvas-light);
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 251, 245, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 24px;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 0.9375rem;
  color: var(--muted);
}

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

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--surface-night);
  color: var(--on-dark);
  padding: 96px 0 112px;
}

.hero-glow {
  position: absolute;
  inset: auto -20% -40% 30%;
  height: 420px;
  background: radial-gradient(ellipse at center, rgba(193, 251, 212, 0.18), transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: 720px;
}

.hero-eyebrow {
  margin: 0 0 16px;
  font-size: 0.875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--link-cool);
}

.hero-title {
  margin: 0 0 24px;
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: 0.06em;
}

.hero-lead {
  margin: 0 0 36px;
  max-width: 560px;
  font-size: 1.125rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.78);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary {
  background: var(--on-dark);
  color: var(--surface-night);
}

.btn-primary:hover {
  background: var(--aloe);
  color: var(--ink);
}

.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: var(--on-dark);
}

.btn-outline:hover {
  border-color: var(--on-dark);
  background: rgba(255, 255, 255, 0.06);
}

/* Sections */
.section {
  padding: 88px 0;
}

.section-cream {
  background: var(--canvas-cream);
}

.section-dark {
  background: var(--surface-dark);
  color: var(--on-dark);
}

.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}

.section-head h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.section-desc {
  margin: 0;
  color: var(--muted);
  font-size: 1.0625rem;
}

.section-dark .section-desc,
.section-dark .access-note {
  color: rgba(255, 255, 255, 0.72);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.about-card {
  background: var(--canvas-light);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
}

.about-icon {
  display: inline-block;
  font-size: 1.75rem;
  margin-bottom: 16px;
}

.about-card h3 {
  margin: 0 0 10px;
  font-size: 1.125rem;
}

.about-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
}

/* Services */
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 32px;
  background: var(--canvas-light);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
  border-color: var(--aloe);
  box-shadow: var(--shadow);
}

.service-num {
  margin-bottom: 16px;
  font-family: var(--font-display);
  font-size: 0.875rem;
  letter-spacing: 0.12em;
  color: var(--link-cool);
}

.service-card h3 {
  margin: 0 0 10px;
  font-size: 1.25rem;
}

.service-card p {
  margin: 0;
  color: var(--muted);
}

/* Access */
.access-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.access-copy h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
}

.access-copy p {
  margin: 0 0 16px;
  color: rgba(255, 255, 255, 0.82);
}

.access-list {
  margin: 0 0 20px;
  padding-left: 1.25rem;
  color: rgba(255, 255, 255, 0.78);
}

.access-list li + li {
  margin-top: 8px;
}

.access-note {
  font-size: 0.875rem;
}

.access-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
}

.mini-app-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(193, 251, 212, 0.15);
  color: var(--aloe);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
}

.mini-app-name {
  margin: 20px 0 8px;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 500;
}

.mini-app-hint {
  margin: 0;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.65);
}

.mini-app-placeholder {
  width: 120px;
  height: 120px;
  margin: 0 auto;
  border-radius: 24px;
  background: linear-gradient(145deg, var(--pistachio), var(--aloe));
  display: grid;
  place-items: center;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 600;
}

/* Footer */
.site-footer {
  background: var(--surface-night);
  color: rgba(255, 255, 255, 0.72);
  padding: 40px 0 32px;
  font-size: 0.875rem;
}

.footer-inner {
  display: grid;
  gap: 16px;
}

.footer-brand strong {
  display: block;
  color: var(--on-dark);
  font-size: 1rem;
  margin-bottom: 4px;
}

.footer-brand p {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
}

.footer-links a:hover {
  color: var(--aloe);
}

.footer-copy {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.45);
}

/* Legal page */
.legal-page {
  padding: 48px 0 80px;
  background: var(--canvas-cream);
}

.legal-inner {
  max-width: 720px;
}

.legal-inner h1 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 2rem;
}

.legal-updated {
  margin: 0 0 32px;
  color: var(--muted);
  font-size: 0.875rem;
}

.legal-inner h2 {
  margin: 32px 0 12px;
  font-size: 1.125rem;
}

.legal-inner h3 {
  margin: 20px 0 8px;
  font-size: 1rem;
  font-weight: 600;
}

.legal-inner p,
.legal-inner li {
  color: #3f3f46;
}

.legal-inner ul,
.legal-inner ol {
  padding-left: 1.25rem;
}

.legal-inner a {
  color: #2f6f5e;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-table-wrap {
  overflow-x: auto;
  margin: 12px 0 24px;
  -webkit-overflow-scrolling: touch;
}

.legal-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  background: #fff;
}

.legal-table th,
.legal-table td {
  border: 1px solid var(--hairline);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  color: #3f3f46;
}

.legal-table th {
  background: #f4f4f5;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

.legal-back {
  margin-top: 48px;
}

.legal-back a {
  color: var(--muted);
}

.legal-back a:hover {
  color: var(--ink);
}

/* Responsive */
@media (max-width: 900px) {
  .about-grid,
  .access-inner {
    grid-template-columns: 1fr;
  }

  .service-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 32px, 1120px);
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 0;
    min-height: auto;
  }

  .hero {
    padding: 72px 0 88px;
  }

  .section {
    padding: 64px 0;
  }
}