:root {
  --paper: #FFFBEF;
  --paper-elevated: #FFFFFF;
  --paper-tint: #FDF3D1;
  --paper-warm: #FFF4D6;
  --ink: #1F1B3A;
  --ink-muted: #57536B;
  --ink-dim: #8A8699;
  --accent: #D9840C;
  --accent-deep: #A8620A;
  --accent-warm: #F5C518;
  --accent-glow: rgba(217, 132, 12, 0.28);
  --accent-subtle: rgba(217, 132, 12, 0.08);
  --accent-dim: rgba(217, 132, 12, 0.22);
  --border: rgba(31, 27, 58, 0.09);
  --shadow-soft: 0 1px 3px rgba(31, 27, 58, 0.04), 0 10px 30px rgba(31, 27, 58, 0.06);
  --shadow-phone: 0 24px 48px rgba(31, 27, 58, 0.18), 0 6px 16px rgba(31, 27, 58, 0.08);
}

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

html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

body {
  min-height: 100vh;
}

a {
  color: var(--accent-deep);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.75;
}

.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-wide {
  max-width: 960px;
}

.page {
  padding: 5rem 0 4rem;
}

.page h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--accent-warm), var(--accent-deep));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page .last-updated {
  color: var(--ink-dim);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

.page h2 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--ink);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.page h3 {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.page p,
.page li {
  color: var(--ink-muted);
  font-size: 1rem;
  font-weight: 400;
  margin-bottom: 1rem;
}

.page ul,
.page ol {
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}

.page li {
  margin-bottom: 0.5rem;
}

.page .back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 3rem;
}

.page .back:hover {
  color: var(--accent-deep);
  opacity: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 251, 239, 0.82);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-header .site-brand { margin-right: auto; }

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 1.15rem;
}

.site-brand-icon {
  width: 38px;
  height: 38px;
  display: block;
  border-radius: 9px;
  box-shadow: 0 4px 12px rgba(31, 27, 58, 0.12);
}

.site-brand-mark {
  color: var(--ink);
}

.site-brand-short {
  display: none;
  color: var(--ink);
}

.site-nav {
  display: flex;
  gap: 1.5rem;
}

.site-nav a {
  color: var(--ink-muted);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.site-nav a:hover {
  color: var(--accent-deep);
  opacity: 1;
}

@media (max-width: 720px) {
  .site-nav { gap: 1rem; }
  .site-nav a { font-size: 0.85rem; }
  .site-brand-mark { display: none; }
  .site-brand-short { display: inline; font-size: 1.1rem; }
}

@media (max-width: 520px) {
  .site-header-inner { padding: 0.8rem 1rem; }
  .site-nav { gap: 0.8rem; }
  .site-nav a:not(:first-child):not(:nth-child(2)) { display: none; }
}

.site-footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--border);
  padding: 3rem 1.5rem 2rem;
  margin-top: 5rem;
  color: var(--ink-dim);
  font-size: 0.9rem;
  background: var(--paper);
}

.site-footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: start;
}

.site-footer-brand {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.site-footer-icon {
  width: 72px;
  height: 72px;
  display: block;
  border-radius: 16px;
  flex-shrink: 0;
  box-shadow: var(--shadow-soft);
}

.site-footer-brand-text .site-footer-mark {
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--ink);
  margin-bottom: 0.25rem;
}

.site-footer-brand p {
  color: var(--ink-muted);
  font-weight: 400;
  max-width: 20rem;
}

.site-footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, auto));
  gap: 2.5rem;
}

.site-footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.site-footer-col h4 {
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.site-footer-col a,
.site-footer a {
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.site-footer-col a:hover,
.site-footer a:hover {
  color: var(--accent-deep);
  opacity: 1;
}

.site-footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--ink-dim);
  font-size: 0.8rem;
}

@media (max-width: 640px) {
  .site-footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .site-footer-nav { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
}