.docs-main {
  max-width: 1120px;
}

.docs-topbar {
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 1.1rem;
}

.docs-page,
.docs-page * {
  font-family: var(--font-body);
}

.docs-version {
  color: var(--color-text-muted);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.docs-page {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
}

.docs-hero {
  padding: clamp(3rem, 7vw, 5.5rem) 0 3rem;
  border-bottom: 1px solid var(--color-border);
}

.docs-kicker {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--color-secondary);
  font-size: 0.75rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.docs-hero h1 {
  max-width: 720px;
  margin: 1.1rem 0 1.2rem;
  font-size: clamp(2.7rem, 7vw, 5.5rem);
  line-height: 0.98;
  letter-spacing: -0.075em;
}

.docs-hero h1 em {
  color: var(--color-primary);
  font-style: normal;
}

.docs-lede {
  max-width: 58ch;
  color: var(--color-text-muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.docs-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-top: 2rem;
  color: var(--color-text-muted);
  font-size: 0.74rem;
}

.docs-meta span + span::before {
  content: "·";
  margin-right: 1.2rem;
  color: var(--color-primary);
}

.docs-meta strong {
  color: var(--color-text);
  font-weight: 600;
}

.docs-contents {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem 1.25rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.contents-label {
  margin-right: auto;
  color: var(--color-text-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.docs-contents a {
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.docs-contents a:hover {
  color: var(--color-primary);
}

.docs-section {
  scroll-margin-top: 1.5rem;
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  border-bottom: 1px solid var(--color-border);
}

.docs-section-heading { display: block; }

.docs-section-index {
  margin: 0 0 0.45rem;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-weight: 500;
}

.docs-section h2 {
  margin-bottom: 1rem;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  letter-spacing: -0.055em;
}

.docs-copy {
  max-width: 68ch;
  margin: 0 0 2.2rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.layer-diagram {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
}

.layer-card {
  min-height: 285px;
  padding: 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-raised);
  box-shadow: 0 5px 0 rgba(23, 42, 58, 0.04);
}

.layer-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--color-text-muted);
  font: 0.72rem var(--font-body);
}

.layer-card h3 {
  margin: 1.4rem 0 0.1rem;
  font-size: 1.35rem;
}

.layer-card > p {
  margin-bottom: 1.2rem;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.layer-visual {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.28rem;
  min-height: 105px;
  margin-bottom: 1.2rem;
  padding: 0.8rem;
  border-radius: 8px;
  background: #1d3443;
  color: #d7eee9;
  font: 0.7rem/1.5 var(--font-body);
}

.html-visual .indent { padding-left: 1rem; color: #f2c14e; }
.css-visual { align-items: flex-start; justify-content: center; }
.css-line { display: block; width: 72%; height: 5px; border-radius: 4px; background: #76c7c1; }
.css-line.wide { width: 92%; background: #f2c14e; }
.css-line.short { width: 48%; }
.js-visual { flex-direction: row; align-items: center; flex-wrap: wrap; gap: 0.5rem; }
.js-button, .js-result { padding: 0.35rem 0.55rem; border-radius: 5px; }
.js-button { background: var(--color-primary); color: #fff; }
.js-result { background: #dff1ef; color: #172a3a; }
.js-arrow { color: #f2c14e; font-size: 1rem; }

.layer-card small {
  color: var(--color-text-muted);
  font-size: 0.72rem;
}

.docs-note {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--color-primary);
  background: var(--color-primary-tint);
}

.docs-note p { margin: 0; color: var(--color-text); font-size: 0.86rem; }
.architecture-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-raised);
}

.architecture-node {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 0.7rem;
  align-items: center;
  padding: 1rem;
  border-radius: 8px;
  background: var(--color-bg);
}

.frontend-node { border-left: 3px solid var(--color-secondary); }
.backend-node { border-left: 3px solid var(--color-primary); }
.architecture-node strong { font-size: 0.95rem; }
.architecture-node small { grid-column: 1 / -1; color: var(--color-text-muted); font-size: 0.76rem; }
.node-file { grid-column: 1 / -1; margin-top: 0.45rem; color: var(--color-secondary); font: 0.68rem var(--font-body); }
.architecture-connection { display: flex; flex-direction: column; align-items: center; gap: 0.1rem; color: var(--color-text-muted); font: 0.62rem var(--font-body); }
.architecture-connection i { color: var(--color-primary); font: normal 1.1rem var(--font-body); line-height: 0.8; }
.architecture-database { grid-column: 1 / -1; justify-self: center; display: flex; align-items: center; gap: 0.5rem; padding: 0.55rem 0.8rem; border: 1px dashed var(--color-line-strong); border-radius: 999px; color: var(--color-text-muted); font-size: 0.75rem; }
.architecture-database small { font-size: 0.68rem; }

.docs-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.docs-columns > div { padding: 1.2rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-raised); }
.docs-columns h3 { margin-bottom: 0.4rem; font-size: 1.05rem; }
.docs-columns p { margin-bottom: 1rem; color: var(--color-text-muted); font-size: 0.86rem; line-height: 1.6; }
.inline-code { color: var(--color-secondary); font-size: 0.72rem; }

.editor-demo {
  display: grid;
  grid-template-columns: 165px 1fr;
  min-height: 250px;
  overflow: hidden;
  border: 1px solid #233f50;
  border-radius: var(--radius-md);
  background: #162b3a;
  box-shadow: 0 8px 0 rgba(23, 42, 58, 0.1);
}

.editor-sidebar { display: flex; flex-direction: column; gap: 0.35rem; padding: 1.1rem 0.8rem; border-right: 1px solid #2b4858; color: #9bb0b9; font-size: 0.72rem; }
.editor-folder { margin-bottom: 0.45rem; color: #f2c14e; font-size: 0.68rem; letter-spacing: 0.08em; }
.editor-file { padding: 0.35rem 0.45rem; border-radius: 4px; }
.editor-file.active { background: rgba(118, 199, 193, 0.14); color: #d7eee9; }
.editor-code { min-width: 0; }
.editor-tab { padding: 0.7rem 1rem; border-bottom: 1px solid #2b4858; color: #d7eee9; font-size: 0.7rem; }
.editor-tab span { float: right; color: #7e969f; }
.editor-code pre { margin: 0; padding: 1.2rem 1rem; overflow-x: auto; color: #d7eee9; font: 0.78rem/2 var(--font-body); }
.editor-code pre i { display: inline-block; width: 2rem; color: #65808c; font-style: normal; user-select: none; }
.editor-code pre b { color: #f2c14e; font-weight: 500; }
.editor-code pre em { color: #76c7c1; font-style: normal; }
.editor-code pre u { color: #f5a48f; text-decoration: none; }

.editor-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1rem; }
.editor-steps > div { padding-top: 1rem; border-top: 2px solid var(--color-secondary); }
.editor-steps span { display: block; margin-bottom: 0.6rem; color: var(--color-text-muted); font: 0.72rem var(--font-body); }
.editor-steps strong { font-size: 0.9rem; }
.editor-steps p { margin: 0.4rem 0 0; color: var(--color-text-muted); font-size: 0.8rem; line-height: 1.5; }
.editor-steps code { color: var(--color-secondary); font-family: var(--font-body); font-size: 0.72rem; }

.repository-overview {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.8rem;
}

.repository-box {
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-raised);
}

.repository-local { border-top: 3px solid var(--color-secondary); }
.repository-remote { border-top: 3px solid var(--color-primary); }
.repo-label { margin: 0 0 0.45rem; color: var(--color-text-muted); font: 0.68rem var(--font-body); text-transform: uppercase; letter-spacing: 0.06em; }
.repository-box h3 { margin-bottom: 1rem; font-size: 1.1rem; }
.repo-files { display: grid; gap: 0.35rem; margin-bottom: 1rem; }
.repo-files span { padding: 0.45rem 0.55rem; border: 1px solid var(--color-line); border-radius: 4px; color: var(--color-text); font: 0.72rem var(--font-body); }
.repository-box small { color: var(--color-text-muted); font-size: 0.75rem; }
.repository-sync { display: flex; flex-direction: column; gap: 0.45rem; color: var(--color-secondary); font: 0.7rem var(--font-body); text-align: center; }
.repository-sync span { padding: 0.3rem 0.45rem; border: 1px solid var(--color-line-strong); border-radius: 4px; }
.repository-definitions { margin-top: 1rem; }
.git-workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 1rem; }
.git-step { padding-top: 1rem; border-top: 2px solid var(--color-secondary); }
.git-step > span { display: block; margin-bottom: 0.6rem; color: var(--color-text-muted); font: 0.72rem var(--font-body); }
.git-step strong { display: block; margin-bottom: 0.45rem; font-size: 0.88rem; }
.git-step code { color: var(--color-secondary); font: 0.7rem var(--font-body); }
.git-step p { margin: 0.45rem 0 0; color: var(--color-text-muted); font-size: 0.78rem; line-height: 1.5; }

.hosting-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 0.55rem;
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-raised);
}

.hosting-flow > div:not(.hosting-arrow) {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.9rem;
  border-radius: 6px;
  background: var(--color-bg);
}

.hosting-flow strong { font-size: 0.84rem; }
.hosting-flow span { color: var(--color-text-muted); font-size: 0.72rem; }
.hosting-arrow { color: var(--color-primary); font-size: 1.1rem; text-align: center; }

.hosting-types,
.hosting-providers {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.hosting-types > div,
.provider-card {
  padding: 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-raised);
}

.hosting-types h3,
.provider-card h3 { margin-bottom: 0.45rem; font-size: 1.05rem; }
.hosting-types p,
.provider-card > p:not(.provider-type) { margin-bottom: 1rem; color: var(--color-text-muted); font-size: 0.84rem; line-height: 1.6; }
.provider-type { margin: 0 0 0.45rem; color: var(--color-secondary); font-size: 0.72rem; font-weight: 600; }
.provider-card ul { display: grid; gap: 0.45rem; margin: 0; padding: 0; list-style: none; color: var(--color-text-muted); font-size: 0.78rem; }
.provider-card li { padding-top: 0.45rem; border-top: 1px solid var(--color-line); }
.provider-cloudflare { border-top: 3px solid #f6821f; }
.provider-aws { border-top: 3px solid #ff9900; }
.provider-azure { border-top: 3px solid #0078d4; }
.hosting-providers { grid-template-columns: repeat(3, 1fr); }
.hosting-choice { display: flex; gap: 1rem; align-items: baseline; margin-top: 1rem; padding: 1rem 1.2rem; border-left: 3px solid var(--color-secondary); background: var(--color-secondary-tint); font-size: 0.84rem; }
.hosting-choice strong { white-space: nowrap; }
.hosting-choice span { color: var(--color-text-muted); line-height: 1.5; }

.docs-footer { display: flex; justify-content: space-between; gap: 1rem; padding: 1.5rem 0 0.5rem; color: var(--color-text-muted); font: 0.75rem var(--font-body); }
.docs-footer a { color: var(--color-primary); }

@media (max-width: 760px) {
  .docs-page { max-width: none; }
  .docs-contents { align-items: flex-start; flex-direction: column; }
  .contents-label { margin: 0 0 0.35rem; }
  .docs-copy { margin-left: 0; }
  .layer-diagram, .docs-columns, .editor-steps { grid-template-columns: 1fr; }
  .repository-overview, .git-workflow { grid-template-columns: 1fr; }
  .hosting-flow, .hosting-types, .hosting-providers { grid-template-columns: 1fr; }
  .hosting-arrow { transform: rotate(90deg); }
  .hosting-choice { flex-direction: column; gap: 0.4rem; }
  .architecture-diagram { grid-template-columns: 1fr; }
  .architecture-connection { flex-direction: row; justify-content: center; }
  .architecture-database { grid-column: auto; }
}

@media (max-width: 520px) {
  .docs-hero h1 { font-size: 2.8rem; }
  .editor-demo { grid-template-columns: 1fr; }
  .editor-sidebar { display: none; }
  .docs-footer { flex-direction: column; }
}