@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg-default: #000000;
  --bg-surface: #0a0a0a;
  --bg-surface2: #0f0f0f;
  --bg-inset: #050505;
  --fg-default: #ffffff;
  --fg-secondary: #878787;
  --fg-tertiary: #5c5c5c;
  --fg-emerald: #1affab;
  --fg-emerald-dim: #0d3326;
  --border-default: rgba(255,255,255,0.06);
  --border-strong: rgba(255,255,255,0.1);
  --border-hover: rgba(255,255,255,0.15);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;
  --t: 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-default);
  color: var(--fg-default);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  font-weight: 400;
}

a { color: var(--fg-emerald); text-decoration: none; transition: opacity var(--t); }
a:hover { opacity: 0.8; }
button, input, select, textarea { font: inherit; }
::selection { background: var(--fg-emerald); color: #000; }
::-webkit-scrollbar { width: 0; height: 0; }

code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  background: var(--bg-surface2);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--fg-emerald);
}

.navbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 24px; height: 52px;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}
.navbar.scrolled { border-bottom-color: var(--border-default); }
.nav-logo {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; letter-spacing: -0.02em;
  color: var(--fg-default); opacity: 1;
}
.nav-logo:hover { opacity: 1; }
.nav-logo-mark {
  width: 26px; height: 26px; border-radius: 7px;
  background: var(--fg-emerald); color: #000;
  display: grid; place-items: center;
  font-size: 10px; font-weight: 700; letter-spacing: -0.02em;
}
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a {
  font-size: 13px; font-weight: 500;
  color: var(--fg-secondary);
  transition: color var(--t);
}
.nav-links a:hover { color: var(--fg-default); opacity: 1; }

.nav-burger {
  display: none;
  background: transparent; border: 0;
  cursor: pointer; padding: 6px;
  flex-direction: column; gap: 5px;
  z-index: 60;
}
.nav-burger span {
  display: block; width: 22px; height: 2px;
  background: var(--fg-default);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed; inset: 0; z-index: 55;
  background: rgba(0,0,0,0.95);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  flex-direction: column;
  align-items: center; justify-content: center; gap: 8px;
  padding: 20px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 20px; font-weight: 500;
  color: var(--fg-secondary);
  padding: 14px 24px;
  transition: color var(--t);
  letter-spacing: -0.02em;
}
.mobile-menu a:hover { color: var(--fg-default); opacity: 1; }
.mobile-menu .btn {
  margin-top: 16px;
  font-size: 15px;
  padding: 12px 28px;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 20px; border-radius: var(--radius-full);
  font-size: 13px; font-weight: 500; line-height: 1;
  cursor: pointer; transition: all var(--t);
  border: 1px solid transparent;
  white-space: nowrap; position: relative; overflow: hidden;
}
.btn-primary {
  background: var(--fg-emerald); color: #000;
  border-color: var(--fg-emerald);
}
.btn-primary:hover { background: #00e6a0; border-color: #00e6a0; color: #000; opacity: 1; }
.btn-sm { padding: 6px 14px; font-size: 12px; }

.policy-page {
  max-width: 860px;
  margin: 0 auto;
  padding: 60px 24px 100px;
}

.policy-header {
  margin-bottom: 56px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-default);
}
.policy-breadcrumb {
  font-size: 12px;
  color: var(--fg-tertiary);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}
.policy-breadcrumb a { color: var(--fg-secondary); }
.policy-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 1.05;
  margin-bottom: 16px;
}
.policy-subtitle {
  font-size: 17px;
  color: var(--fg-secondary);
  line-height: 1.6;
  max-width: 600px;
}
.policy-meta {
  display: flex;
  gap: 24px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.policy-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.policy-meta-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-tertiary);
  font-family: 'JetBrains Mono', monospace;
}
.policy-meta-value {
  font-size: 14px;
  color: var(--fg-default);
  font-weight: 500;
}

.policy-toc {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  padding: 32px;
  margin-bottom: 56px;
}
.policy-toc-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-emerald);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 20px;
}
.policy-toc-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 32px;
}
.policy-toc-list li a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--fg-secondary);
  padding: 6px 0;
  transition: color var(--t);
}
.policy-toc-list li a:hover { color: var(--fg-default); opacity: 1; }
.policy-toc-list li a::before {
  content: attr(data-num);
  font-size: 10px;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  color: var(--fg-tertiary);
  width: 24px;
  flex-shrink: 0;
}

.policy-section {
  margin-bottom: 48px;
}
.policy-section-anchor {
  display: block;
  position: relative;
  top: -70px;
  visibility: hidden;
}
.policy-section-num {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-emerald);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 10px;
}
.policy-section h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 20px;
}
.policy-section h3 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: 28px;
  margin-bottom: 10px;
}
.policy-section p {
  font-size: 15px;
  color: var(--fg-secondary);
  line-height: 1.75;
  margin-bottom: 14px;
}
.policy-section ul {
  list-style: none;
  display: grid;
  gap: 10px;
  margin-bottom: 16px;
  padding-left: 0;
}
.policy-section ul li {
  font-size: 14px;
  color: var(--fg-secondary);
  line-height: 1.65;
  display: flex;
  gap: 10px;
  align-items: baseline;
}
.policy-section ul li::before {
  content: '';
  display: block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--fg-emerald);
  flex-shrink: 0;
  margin-top: 8px;
}

.policy-callout {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-left: 3px solid var(--fg-emerald);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin: 24px 0;
}
.policy-callout p {
  font-size: 14px;
  margin-bottom: 0;
}

.policy-table-wrap {
  overflow-x: auto;
  margin: 20px 0;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
}
.policy-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.policy-table th {
  text-align: left;
  padding: 14px 18px;
  font-weight: 600;
  color: var(--fg-default);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg-surface2);
  border-bottom: 1px solid var(--border-default);
}
.policy-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-default);
  color: var(--fg-secondary);
  line-height: 1.55;
}
.policy-table tr:last-child td { border-bottom: none; }

.policy-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 20px 0;
}
.policy-info-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.policy-info-card h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}
.policy-info-card p {
  font-size: 13px;
  margin-bottom: 0;
}

.policy-contact-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  padding: 32px;
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}
.policy-contact-item h4 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-tertiary);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 8px;
}
.policy-contact-item p {
  font-size: 14px;
  color: var(--fg-default);
  margin-bottom: 0;
}

.policy-footer-section {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--border-default);
}
.policy-footer-section h2 {
  font-size: 20px;
  margin-bottom: 12px;
}
.policy-footer-section p {
  font-size: 14px;
  color: var(--fg-secondary);
  line-height: 1.7;
}

.site-footer {
  max-width: 1300px; margin: 0 auto;
  padding: 40px 24px;
  border-top: 1px solid var(--border-default);
}
.site-footer-inner {
  display: flex; justify-content: space-between; gap: 16px;
  color: var(--fg-tertiary); font-size: 12px;
}

.sr {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.sr.visible { opacity: 1; transform: none; }

.sr-stagger > * {
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.sr-stagger > *.visible { opacity: 1; transform: none; }

.btn .ripple {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,0.2);
  transform: scale(0); animation: rippleEffect .5s ease-out;
  pointer-events: none;
}
.btn-primary .ripple { background: rgba(0,0,0,0.12); }
@keyframes rippleEffect { to { transform: scale(4); opacity: 0; } }

@media (max-width: 1024px) {
  .policy-page { padding: 48px 20px 80px; }
  .policy-header { margin-bottom: 40px; padding-bottom: 32px; }
  .policy-toc { padding: 24px; margin-bottom: 40px; }
  .policy-contact-card { padding: 24px; }
}

@media (max-width: 768px) {
  .navbar { padding: 10px 16px; }
  .nav-links { display: none; }
  .nav-burger { display: flex; }
  .navbar > .btn { display: none; }

  .policy-page { padding: 32px 16px 60px; }

  .policy-header { margin-bottom: 32px; padding-bottom: 24px; }
  .policy-title { font-size: clamp(28px, 8vw, 40px); margin-bottom: 12px; }
  .policy-subtitle { font-size: 15px; }
  .policy-meta { gap: 16px; margin-top: 16px; }

  .policy-toc { padding: 20px; margin-bottom: 32px; border-radius: var(--radius-lg); }
  .policy-toc-list { grid-template-columns: 1fr; gap: 4px 0; }

  .policy-section { margin-bottom: 36px; }
  .policy-section h2 { font-size: clamp(20px, 5vw, 26px); margin-bottom: 14px; }
  .policy-section h3 { font-size: 15px; margin-top: 20px; margin-bottom: 8px; }
  .policy-section p { font-size: 14px; line-height: 1.7; }
  .policy-section ul li { font-size: 13px; }

  .policy-callout { padding: 16px 18px; margin: 18px 0; border-radius: var(--radius-md); }
  .policy-callout p { font-size: 13px; }

  .policy-table { font-size: 12px; }
  .policy-table th { padding: 10px 12px; font-size: 10px; }
  .policy-table td { padding: 10px 12px; }

  .policy-info-grid { grid-template-columns: 1fr; gap: 12px; }
  .policy-info-card { padding: 18px; }

  .policy-contact-card { grid-template-columns: 1fr; padding: 20px; gap: 16px; border-radius: var(--radius-lg); }

  .policy-footer-section { margin-top: 40px; padding-top: 28px; }
  .policy-footer-section h2 { font-size: 18px; }
  .policy-footer-section p { font-size: 13px; }

  .site-footer { padding: 24px 16px; }
  .site-footer-inner { flex-direction: column; text-align: center; gap: 8px; font-size: 11px; }
}