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

:root {
  --bg0: #f4f2ee;
  --bg1: #ffffff;
  --bg2: #f0ede8;
  --bg3: #e8e4de;
  --bg4: #d8d4ce;
  --am:  #a86a10;
  --am2: #d4901a;
  --am3: #8a5608;
  --amb: rgba(168,106,16,.08);
  --ambb: rgba(168,106,16,.2);
  --tx:  #1a1816;
  --tx2: #5a5652;
  --tx3: #9a9690;
  --brd: rgba(0,0,0,.09);
  --brd2: rgba(0,0,0,.15);
  --grn: #2a6a3a;
  --red: #8a2a1a;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
  --max: 1100px;
}

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

html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg0);
  color: var(--tx);
  font-size: 15px;
  line-height: 1.7;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 2px; }

/* ── TOPNAV ── */
.topnav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244,242,238,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--brd);
  height: 56px;
  display: flex;
  align-items: center;
  padding: 0 32px;
  gap: 0;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.nav-logo-mark {
  width: 28px; height: 28px;
  background: var(--am);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  color: #000;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.nav-logo-name {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--tx);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 40px;
  list-style: none;
}
.nav-links a {
  display: block;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--tx2);
  text-decoration: none;
  border-radius: 4px;
  transition: all .13s;
}
.nav-links a:hover { background: rgba(255,255,255,.05); color: var(--tx); }
.nav-links a.active { color: var(--am3); background: var(--amb); }
.nav-cta {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 5px;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: all .13s;
  cursor: pointer;
  border: none;
  font-family: var(--sans);
}
.btn-primary {
  background: var(--am);
  color: #000;
}
.btn-primary:hover { background: var(--am3); }
.btn-ghost {
  background: transparent;
  color: var(--tx2);
  border: 1px solid var(--brd2);
}
.btn-ghost:hover { border-color: var(--am); color: var(--am3); }

/* ── PAGE WRAPPER ── */
.page-wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}

/* ── HERO ── */
.hero {
  padding: 96px 32px 80px;
  max-width: var(--max);
  margin: 0 auto;
  position: relative;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--am);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 24px; height: 1px;
  background: var(--am);
}
.hero h1 {
  font-size: clamp(36px, 5vw, 58px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--tx);
  margin-bottom: 20px;
  max-width: 720px;
}
.hero h1 span { color: var(--am3); }
.hero-desc {
  font-size: 17px;
  color: var(--tx2);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-meta {
  margin-top: 48px;
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-meta-val {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 500;
  color: var(--am3);
}
.hero-meta-lbl {
  font-size: 11px;
  color: var(--tx3);
  letter-spacing: .06em;
  text-transform: uppercase;
}

/* ── SECTION ── */
.section {
  padding: 72px 32px;
  max-width: var(--max);
  margin: 0 auto;
}
.section + .section { padding-top: 0; }
.section-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--am);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-label::before { content:''; display:block; width:20px; height:1px; background:var(--am); }
.section h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 600;
  color: var(--tx);
  margin-bottom: 12px;
  letter-spacing: -.01em;
}
.section-desc { font-size: 15px; color: var(--tx2); max-width: 560px; margin-bottom: 40px; }

/* ── FEATURE GRID ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.feature-card {
  background: var(--bg1);
  border: 1px solid var(--brd);
  border-radius: 10px;
  padding: 24px;
  transition: border-color .15s;
}
.feature-card:hover { border-color: var(--ambb); }
.feature-icon {
  width: 36px; height: 36px;
  background: var(--amb);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
  font-size: 16px;
}
.feature-card h3 {
  font-size: 14px;
  font-weight: 500;
  color: var(--tx);
  margin-bottom: 6px;
}
.feature-card p { font-size: 13px; color: var(--tx2); line-height: 1.6; }

/* ── UI PREVIEW ── */
.ui-preview {
  background: var(--bg1);
  border: 1px solid var(--brd);
  border-radius: 12px;
  overflow: hidden;
  margin: 40px 0;
}
.ui-preview-bar {
  background: var(--bg2);
  border-bottom: 1px solid var(--brd);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.ui-dot { width: 10px; height: 10px; border-radius: 50%; }
.ui-dot-r { background: #ff5f57; }
.ui-dot-y { background: #febc2e; }
.ui-dot-g { background: #28c840; }
.ui-preview-url {
  margin-left: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--tx3);
}
.ui-preview-body {
  display: flex;
  min-height: 320px;
  font-size: 12px;
}
.ui-preview-sidebar {
  width: 160px;
  flex-shrink: 0;
  background: var(--bg2);
  border-right: 1px solid var(--brd);
  padding: 12px 0;
}
.ui-preview-nav-lbl {
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--tx3);
  padding: 8px 14px 3px;
}
.ui-preview-nav-item {
  padding: 6px 14px;
  font-size: 11px;
  color: var(--tx2);
  cursor: default;
}
.ui-preview-nav-item.active {
  background: var(--amb);
  color: var(--am3);
  border-left: 2px solid var(--am);
}
.ui-preview-main {
  flex: 1;
  padding: 20px;
}
.ui-preview-ph {
  height: 12px;
  border-radius: 3px;
  background: var(--bg3);
  margin-bottom: 8px;
}
.ui-preview-ph.short { width: 40%; }
.ui-preview-ph.med { width: 65%; }
.ui-preview-ph.full { width: 100%; }
.ui-preview-ph.am { background: var(--amb); width: 30%; }
.ui-bank {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--bg3);
  border: 1px solid var(--ambb);
  border-radius: 5px;
  margin-bottom: 6px;
}
.ui-bank-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--am); flex-shrink:0; }
.ui-bank-line { flex:1; height:8px; border-radius:2px; background:var(--bg4); }
.ui-bank-tag { width: 36px; height: 8px; border-radius: 2px; background: var(--amb); }

/* ── PLATFORMS ── */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.platform-card {
  background: var(--bg1);
  border: 1px solid var(--brd);
  border-radius: 8px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.platform-icon { font-size: 24px; flex-shrink: 0; }
.platform-name { font-size: 13px; font-weight: 500; color: var(--tx); }
.platform-desc { font-size: 11px; color: var(--tx3); margin-top: 2px; }

/* ── DOC LAYOUT ── */
.doc-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 0;
  max-width: var(--max);
  margin: 0 auto;
  min-height: calc(100vh - 56px);
}
.doc-sidebar {
  border-right: 1px solid var(--brd);
  padding: 32px 0;
  position: sticky;
  top: 56px;
  height: calc(100vh - 56px);
  overflow-y: auto;
}
.doc-sidebar::-webkit-scrollbar { width: 3px; }
.doc-sidebar::-webkit-scrollbar-thumb { background: var(--bg3); }
.doc-nav-section {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--tx3);
  padding: 12px 20px 4px;
}
.doc-nav-link {
  display: block;
  padding: 6px 20px;
  font-size: 13px;
  color: var(--tx2);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all .12s;
}
.doc-nav-link:hover { color: var(--tx); background: rgba(255,255,255,.03); }
.doc-nav-link.active { color: var(--am3); border-left-color: var(--am); background: var(--amb); }
.doc-nav-link.sub { padding-left: 32px; font-size: 12px; }
.doc-content {
  padding: 48px 48px 80px;
  max-width: 760px;
}
.doc-content h1 {
  font-size: 32px;
  font-weight: 600;
  color: var(--tx);
  margin-bottom: 8px;
  letter-spacing: -.01em;
}
.doc-content .doc-lead {
  font-size: 16px;
  color: var(--tx2);
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--brd);
}
.doc-content h2 {
  font-size: 20px;
  font-weight: 500;
  color: var(--tx);
  margin: 40px 0 12px;
  padding-top: 8px;
}
.doc-content h3 {
  font-size: 15px;
  font-weight: 500;
  color: var(--tx2);
  margin: 28px 0 8px;
  font-family: var(--mono);
  letter-spacing: .02em;
}
.doc-content p { color: var(--tx2); margin-bottom: 14px; line-height: 1.8; }
.doc-content ul, .doc-content ol {
  color: var(--tx2);
  margin-bottom: 14px;
  padding-left: 24px;
  line-height: 1.8;
}
.doc-content li { margin-bottom: 4px; }
.doc-content li strong { color: var(--tx); font-weight: 500; }
.doc-content a { color: var(--am3); text-decoration: none; }
.doc-content a:hover { text-decoration: underline; }
.doc-content code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--bg2);
  border: 1px solid var(--brd2);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--am3);
}
.doc-content pre {
  background: var(--bg1);
  border: 1px solid var(--brd);
  border-radius: 8px;
  padding: 20px;
  margin: 16px 0;
  overflow-x: auto;
}
.doc-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 13px;
  color: var(--tx2);
}
.doc-content .note {
  background: var(--amb);
  border: 1px solid var(--ambb);
  border-radius: 6px;
  padding: 14px 16px;
  margin: 20px 0;
  font-size: 13px;
  color: var(--am3);
  line-height: 1.6;
}
.doc-content .note strong { color: var(--am3); }

/* ── DOWNLOAD CARD ── */
.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.download-card {
  background: var(--bg1);
  border: 1px solid var(--brd);
  border-radius: 10px;
  padding: 20px;
  transition: border-color .15s;
}
.download-card:hover { border-color: var(--ambb); }
.download-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.download-card-icon { font-size: 20px; }
.download-card-name { font-size: 14px; font-weight: 500; color: var(--tx); }
.download-card-desc { font-size: 12px; color: var(--tx3); margin-bottom: 14px; line-height: 1.6; }
.download-card .btn { width: 100%; justify-content: center; font-size: 12px; }

/* ── FOOTER ── */
.footer {
  border-top: 1px solid var(--brd);
  padding: 32px;
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-copy { font-size: 12px; color: var(--tx3); }
.footer-links { display: flex; gap: 16px; margin-left: auto; }
.footer-links a { font-size: 12px; color: var(--tx3); text-decoration: none; }
.footer-links a:hover { color: var(--am); }

/* ── DIVIDER ── */
.divider { border: none; border-top: 1px solid var(--brd); margin: 0; }

/* ── NAV PREV/NEXT ── */
.doc-nav-arrows {
  display: flex;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--brd);
  gap: 12px;
}
.doc-nav-arrow {
  display: flex;
  flex-direction: column;
  gap: 3px;
  text-decoration: none;
  padding: 12px 16px;
  border: 1px solid var(--brd);
  border-radius: 6px;
  transition: border-color .13s;
  max-width: 46%;
}
.doc-nav-arrow:hover { border-color: var(--ambb); }
.doc-nav-arrow-dir { font-size: 10px; color: var(--tx3); font-family: var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.doc-nav-arrow-title { font-size: 13px; color: var(--am3); }
.doc-nav-arrow.next { align-items: flex-end; }

/* ── INLINE CODE HINT ── */
.kbd {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--bg2);
  border: 1px solid var(--brd2);
  border-radius: 3px;
  padding: 1px 6px;
  color: var(--tx2);
}

/* ── LIGHT MODE REFINEMENTS ── */
.feature-card { box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.download-card { box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.platform-card { box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.ui-preview { box-shadow: 0 2px 8px rgba(0,0,0,.08); }
.doc-content pre { background: #f8f6f2; border-color: var(--brd2); }
.doc-content pre code { color: var(--tx2); }
.doc-content code { background: #f0ede8; color: var(--am); }
.doc-content .note { background: rgba(168,106,16,.07); }
.ui-preview-body { background: var(--bg0); }
.ui-preview-sidebar { background: var(--bg1); }
.ui-bank { background: var(--bg1); }

/* ── ANIMATE IN ── */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fade-up .5s ease both; }
.fade-up-1 { animation-delay: .1s; }
.fade-up-2 { animation-delay: .2s; }
.fade-up-3 { animation-delay: .3s; }
.fade-up-4 { animation-delay: .4s; }