:root {
  --bg: #f3eee6;
  --surface: #fffdf8;
  --surface-soft: #eee3d5;
  --paper: #fffaf0;
  --text: #241c16;
  --muted: #67584b;
  --faint: #9a8b7a;
  --border: rgba(36, 28, 22, 0.13);
  --border-soft: rgba(36, 28, 22, 0.07);
  --accent: #a65f2b;
  --accent-strong: #87471e;
  --accent-soft: #f3dfcb;
  --button: #241c16;
  --button-text: #fffdf8;
  --shadow: 0 24px 70px rgba(54, 38, 25, 0.14);
  --serif: "Source Serif 4", "Noto Serif SC", Georgia, serif;
  --sans: "IBM Plex Sans", "Noto Sans SC", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

body.dark {
  --bg: #17120e;
  --surface: #211914;
  --surface-soft: #2a2019;
  --paper: #2a211a;
  --text: #fff8ec;
  --muted: #cbbba8;
  --faint: #9f8f7e;
  --border: rgba(255, 248, 236, 0.15);
  --border-soft: rgba(255, 248, 236, 0.08);
  --accent: #d58b53;
  --accent-strong: #f0a76b;
  --accent-soft: rgba(213, 139, 83, 0.18);
  --button: #fff8ec;
  --button-text: #17120e;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 22% 0%, rgba(166, 95, 43, 0.12), transparent 24rem),
    linear-gradient(180deg, var(--surface) 0%, var(--bg) 44%, var(--surface-soft) 100%);
  color: var(--text);
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.65;
  transition: background 220ms ease, color 220ms ease;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; }
h1, h2, h3, p { margin: 0; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border-soft);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(16px);
}

.header-inner {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  min-width: 0;
}

.logo {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--button);
  color: var(--button-text);
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 800;
}

.brand-title { display: block; font-size: 12px; font-weight: 800; letter-spacing: -0.02em; }
.brand-subtitle { display: block; margin-top: 1px; color: var(--faint); font-size: 10px; }

.nav, .toolbar { display: flex; align-items: center; gap: 8px; }

.nav a,
.toolbar button,
.toolbar a,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.nav a:hover,
.toolbar button:hover,
.toolbar a:hover,
.btn:hover { transform: translateY(-1px); border-color: var(--faint); }

.nav a.active,
.btn.primary { background: var(--button); color: var(--button-text); border-color: var(--button); }

.hero { padding: 58px 0 76px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: 46px;
  align-items: center;
}

.eyebrow {
  color: var(--accent);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; }
.badge {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  padding: 6px 10px;
  font-size: 11px;
}

.hero h1 {
  margin-top: 18px;
  font-family: var(--serif);
  font-size: clamp(30px, 4.8vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.05em;
}

.hero-copy {
  max-width: 620px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.personal-copy {
  max-width: 580px;
  margin-top: 12px;
  color: var(--faint);
  font-size: 12px;
  line-height: 1.65;
}

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.actions-center { justify-content: center; }

.workbench {
  border: 1px solid var(--border);
  border-radius: 28px;
  background: linear-gradient(145deg, var(--surface), var(--paper));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.workbench-top {
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--muted);
  font-size: 11px;
}

.workbench-top strong { color: var(--text); font-size: 12px; }
.status { color: var(--accent); font-family: var(--mono); }

.workbench-body {
  min-height: 430px;
  display: grid;
  grid-template-columns: 0.82fr 1.34fr 0.9fr;
}

.rail, .notes { background: color-mix(in srgb, var(--surface-soft) 72%, transparent); padding: 16px; }
.rail { border-right: 1px solid var(--border-soft); }
.notes { border-left: 1px solid var(--border-soft); }
.canvas { padding: 24px 26px; background: var(--surface); }
.mini-title { color: var(--faint); font-size: 10px; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }

.doc-row, .note-row {
  margin-top: 11px;
  padding-top: 11px;
  border-top: 1px solid var(--border-soft);
}

.doc-row strong, .note-row strong { display: block; font-size: 12px; line-height: 1.4; }
.doc-row span, .note-row span { display: block; margin-top: 4px; color: var(--faint); font-size: 10px; }
.note-row { border-left: 2px solid var(--accent); border-top: 0; padding: 10px 0 10px 10px; background: color-mix(in srgb, var(--surface) 78%, transparent); }

.paper-title {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.paper-meta { margin-top: 10px; color: var(--faint); font-family: var(--mono); font-size: 10px; }
.paper-lines { display: grid; gap: 10px; margin-top: 24px; }
.paper-line { height: 8px; border-radius: 999px; background: color-mix(in srgb, var(--accent-soft) 52%, var(--surface-soft)); }
.paper-line:nth-child(1) { width: 94%; }
.paper-line:nth-child(2) { width: 78%; }
.paper-line:nth-child(3) { width: 88%; }
.paper-line:nth-child(4) { width: 63%; }

.index-block {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border-soft);
}

.index-block h3 { font-size: 12px; }
.index-block p { margin-top: 8px; color: var(--muted); font-size: 12px; line-height: 1.65; }

.section { padding: 72px 0; }
.section.surface { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--surface) 62%, transparent); }
.section-head { max-width: 690px; margin: 0 auto 34px; text-align: center; }
.section h2, .guide-article h2, .cta h2 {
  margin-top: 10px;
  font-family: var(--serif);
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.18;
  letter-spacing: -0.04em;
}
.section-desc { margin-top: 12px; color: var(--muted); font-size: 12px; line-height: 1.65; }

.page-stack { display: grid; gap: 18px; }
.page-entry {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 22px;
  align-items: center;
  padding: 24px 0;
  border-top: 1px solid var(--border);
}
.page-entry:first-child { padding-top: 4px; }
.page-entry.reverse { grid-template-columns: 1.1fr 0.9fr; }
.page-kicker { color: var(--accent); font-family: var(--mono); font-size: 10px; }
.page-entry h3 { margin-top: 12px; font-size: 18px; line-height: 1.25; }
.page-entry p { margin-top: 10px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.page-points { display: grid; gap: 8px; margin-top: 14px; }
.page-points span {
  padding-left: 12px;
  border-left: 2px solid var(--accent);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.page-preview {
  min-height: 260px;
  display: grid;
  place-items: center;
  border: 1px dashed var(--border);
  border-radius: 24px;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  color: var(--faint);
  padding: 24px;
  text-align: center;
}

.page-preview strong { display: block; color: var(--text); font-size: 13px; }
.page-preview span { display: block; margin-top: 8px; font-size: 12px; }

.workflow { background: var(--text); color: var(--surface); padding: 56px 0; }
.workflow .eyebrow { color: var(--accent-strong); }
.workflow-grid { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: 34px; align-items: start; }
.workflow h2 { margin-top: 10px; font-family: var(--serif); font-size: clamp(22px, 3.2vw, 32px); line-height: 1.18; letter-spacing: -0.04em; }
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
.step-card { border: 1px solid rgba(255,255,255,0.12); border-radius: 16px; padding: 16px; background: rgba(255,255,255,0.05); }
.step-card span { color: rgba(255,255,255,0.48); font-family: var(--mono); font-size: 10px; }
.step-card p { margin-top: 12px; font-size: 12px; font-weight: 800; }

.trust-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.trust-item { padding: 22px 18px; border-right: 1px solid var(--border-soft); }
.trust-item:last-child { border-right: 0; }
.trust-item h3 { font-size: 13px; }
.trust-item p { margin-top: 8px; color: var(--muted); font-size: 12px; line-height: 1.6; }

.guide-layout-wrap { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--surface) 70%, transparent); }
.guide-layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); min-height: 660px; }
.guide-sidebar { border-right: 1px solid var(--border); padding: 26px 16px 26px 0; }
.guide-sidebar-sticky { position: sticky; top: 92px; }
.guide-sidebar-title { margin: 0 0 12px 12px; color: var(--accent); font-size: 10px; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }
.guide-nav { display: grid; gap: 4px; }

.guide-nav button {
  width: 100%;
  border: 0;
  border-radius: 14px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 9px 10px;
  text-align: left;
}

.guide-nav button:hover { background: color-mix(in srgb, var(--accent-soft) 44%, transparent); color: var(--text); }
.guide-nav button.active { background: var(--button); color: var(--button-text); }
.guide-nav small { display: block; opacity: 0.72; font-size: 10px; }
.guide-nav span { display: block; margin-top: 3px; font-size: 11px; font-weight: 800; line-height: 1.35; }
.guide-content { padding: 40px 0 40px 46px; }
.guide-article { max-width: 760px; }
.guide-article .chapter { color: var(--accent); font-size: 11px; font-weight: 800; }
.guide-intro { margin-top: 12px; color: var(--muted); font-size: 12px; line-height: 1.65; }
.doc-block { border-top: 1px solid var(--border); padding: 24px 0; }
.doc-block:first-of-type { margin-top: 28px; }
.doc-block h3 { font-size: 13px; }
.doc-block p { margin-top: 12px; color: var(--muted); font-size: 12px; line-height: 1.65; }

.cta { padding: 62px 0; text-align: center; }
.cta-inner { max-width: 760px; margin: 0 auto; }
.cta p { margin-top: 14px; color: var(--muted); font-size: 12px; line-height: 1.65; }

.footer { border-top: 1px solid var(--border); padding: 24px 0; color: var(--faint); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: 10px; }
.footer-links { display: flex; gap: 14px; align-items: center; }

@media (max-width: 940px) {
  .header-inner { height: auto; flex-wrap: wrap; padding: 12px 0; }
  .nav { order: 3; width: 100%; overflow-x: auto; padding-bottom: 2px; }
  .hero-grid, .workflow-grid, .page-entry, .page-entry.reverse { grid-template-columns: 1fr; }
  .trust-list { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .guide-layout { grid-template-columns: 1fr; }
  .guide-sidebar { border-right: 0; border-bottom: 1px solid var(--border); padding: 18px 0; }
  .guide-sidebar-sticky { position: static; }
  .guide-nav { display: flex; overflow-x: auto; gap: 8px; padding-bottom: 4px; }
  .guide-nav button { min-width: 210px; }
  .guide-content { padding: 34px 0; }
}

@media (max-width: 560px) {
  .container { width: min(100% - 28px, 1120px); }
  .toolbar a span, .toolbar button span { display: none; }
  .hero { padding: 48px 0 64px; }
  .hero h1 { font-size: clamp(28px, 8vw, 42px); }
  .trust-list, .steps { grid-template-columns: 1fr; }
  .workbench-body { grid-template-columns: 1fr; }
  .rail, .notes { display: none; }
  .canvas { min-height: 330px; }
  .page-preview { min-height: 240px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}