/* ============================================================
   GIGAGO Developer Docs — stylesheet
   Ported from "Gigago Docs v2" design (light/dark, bilingual)
   ============================================================ */

:root {
  --primary: #0B85F0;
  --primary-soft: rgba(11, 133, 240, .09);
  --purple: #4A0CA5;
  --bg: #FFFFFF;
  --side: #FAFAFA;
  --ink: #1A1A2E;
  --muted: #6B7280;
  --line: #E5E7EB;
  --code-bg: #0F1226;
  --inline-bg: #F3F4F6;
  --card: #FFFFFF;
  --zebra: #FAFBFC;
  --thead: #F5F6F8;
  --content-w: 760px;

  --green-bg: #DCFCE7;   --green-fg: #15803D;
  --blue-bg: #DBEAFE;    --blue-fg: #1D4ED8;
  --orange-bg: #FFEDD5;  --orange-fg: #C2410C;
  --red-bg: #FEE2E2;     --red-fg: #B91C1C;
  --amber-bg: #FEF3C7;   --amber-fg: #A16207;
}

html[data-theme="dark"] {
  --primary: #4DA6FF;
  --primary-soft: rgba(77, 166, 255, .13);
  --bg: #0F1117;
  --side: #161922;
  --ink: #E6E8EC;
  --muted: #9CA3AF;
  --line: #262A36;
  --code-bg: #171A2A;
  --inline-bg: #1E2230;
  --card: #141721;
  --zebra: #131620;
  --thead: #181C28;

  --green-bg: #14351f;   --green-fg: #7ee2a0;
  --blue-bg: #16233f;    --blue-fg: #8ab4f8;
  --orange-bg: #3a2410;  --orange-fg: #f5b072;
  --red-bg: #3a1a1a;     --red-fg: #f4a3a3;
  --amber-bg: #382c10;   --amber-fg: #e6c25a;
}

* { box-sizing: border-box; }
/* Luôn chừa chỗ cho thanh cuộn → không nhảy ngang giữa trang ngắn/dài */
html { scroll-behavior: smooth; scrollbar-gutter: stable; overflow-y: scroll; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--purple); text-decoration: underline; }
html[data-theme="dark"] a:hover { color: #8AB4F8; }
::selection { background: rgba(11, 133, 240, .2); }
code, pre { font-family: 'JetBrains Mono', ui-monospace, monospace; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 16px;
  height: 60px; padding: 0 max(12px, calc(50vw - 688px));
  background: var(--bg); border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.brand #brandLogo { height: 22px; width: auto; display: block; }
.brand .sub {
  font-size: 13px; font-weight: 600; color: var(--muted);
  border-left: 1px solid var(--line); padding-left: 10px; letter-spacing: .02em;
}
.spacer { flex: 1; }
.search-btn {
  display: flex; align-items: center; gap: 8px; height: 34px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--side);
  color: var(--muted); font-size: 13px; min-width: 220px; cursor: text;
  font-family: inherit;
}
.search-btn .kbd {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  border: 1px solid var(--line); border-radius: 4px; padding: 1px 5px; background: var(--bg);
}
.icon-btn {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--bg); color: var(--ink); cursor: pointer; font-size: 15px;
}
.icon-btn:hover { border-color: var(--primary); color: var(--primary); }
.lang-toggle {
  display: flex; border: 1px solid var(--line); border-radius: 8px;
  overflow: hidden; font-size: 12px; font-weight: 600;
}
.lang-toggle span { padding: 7px 10px; cursor: pointer; color: var(--muted); }
.lang-toggle span.active { background: var(--primary); color: #fff; }
.menu-btn { display: none; }

/* ---------- Layout ---------- */
.layout { display: flex; align-items: flex-start; max-width: 1400px; margin: 0 auto; }

/* ---------- Sidebar ---------- */
.sidebar {
  position: sticky; top: 60px; width: 312px; flex: 0 0 312px;
  height: calc(100vh - 60px); overflow-y: auto;
  background: var(--side); border-right: 1px solid var(--line);
  padding: 16px 12px 40px; display: flex; flex-direction: column;
}
.nav-home {
  display: flex; align-items: center; gap: 8px; padding: 8px 12px;
  border-radius: 6px; font-size: 14px; cursor: pointer; color: var(--ink);
  font-weight: 500; margin-bottom: 14px;
}
.nav-home:hover, .nav-item:hover, .nav-collapse:hover { background: var(--primary-soft); }
.nav-home.active, .nav-item.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }

.nav-group { margin-bottom: 16px; }
.nav-group-label {
  font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); padding: 6px 12px;
}
/* Tách các nhóm con trong doc-set cho rõ ràng hơn */
.nav-children .nav-group-label { margin-top: 12px; }
.nav-children .nav-group-label:first-child { margin-top: 6px; }
.nav-item {
  display: flex; align-items: center; gap: 8px; padding: 7px 12px;
  border-radius: 6px; font-size: 14px; cursor: pointer; color: var(--ink);
}
.nav-item .label { flex: 1; white-space: nowrap; }
.nav-item .method-badge { flex: none; }
.nav-sep { border-top: 1px solid var(--line); margin: 0 12px 12px; }

.nav-collapse {
  display: flex; align-items: center; gap: 8px; padding: 8px 12px;
  border-radius: 6px; cursor: pointer; font-size: 13px; font-weight: 700; letter-spacing: .02em;
}
.nav-collapse.disabled { opacity: .5; cursor: not-allowed; }
.nav-collapse .label { flex: 1; }
.nav-collapse .chev { color: var(--muted); font-size: 11px; }
.nav-children { padding-left: 10px; border-left: 1px solid var(--line); margin-left: 19px; }
.nav-subsection { margin-bottom: 12px; }
.nav-item.sub { font-size: 14px; padding: 6px 12px; }

.ver-badge {
  font-family: 'JetBrains Mono', monospace; font-size: 10px; font-weight: 600;
  padding: 1px 6px; border-radius: 4px; background: var(--primary-soft); color: var(--primary);
}
.soon-badge {
  font-size: 10px; font-weight: 600; padding: 1px 6px; border-radius: 4px;
  background: var(--inline-bg); color: var(--muted);
}
.method-badge {
  font-family: 'JetBrains Mono', monospace; font-size: 10px; font-weight: 600;
  padding: 1px 6px; border-radius: 4px;
}
.m-get  { background: var(--green-bg);  color: var(--green-fg); }
.m-post { background: var(--blue-bg);   color: var(--blue-fg); }
.m-put  { background: var(--orange-bg); color: var(--orange-fg); }

/* ---------- Main ---------- */
.main { flex: 1; min-width: 0; padding: 36px 48px 80px; }
.content { max-width: var(--content-w); }

.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.breadcrumb .sep { margin: 0 4px; }
.breadcrumb .cur { color: var(--ink); font-weight: 500; }

.page-title { font-size: 32px; font-weight: 800; margin: 0 0 10px; letter-spacing: -.01em; }
h1.page-title.home { margin: 8px 0 10px; }
.lead { font-size: 17px; color: var(--muted); margin: 0 0 24px; line-height: 1.65; }
.page-updated { font-size: 13px; color: var(--muted); margin: -2px 0 22px; }
.lead.big { font-size: 18px; margin-bottom: 32px; }

.content h2 {
  font-size: 24px; font-weight: 600; margin: 36px 0 14px;
  padding-top: 20px; border-top: 1px solid var(--line); scroll-margin-top: 76px;
}
.content h2.tight { margin-top: 24px; }
.content p { font-size: 15px; line-height: 1.7; margin: 0 0 14px; }
.content p.muted { color: var(--muted); }
.content ul, .content ol { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 8px; }
.content li { font-size: 15px; line-height: 1.65; }

.inline-code {
  font-family: 'JetBrains Mono', monospace; font-size: 13px;
  background: var(--inline-bg); color: var(--primary); padding: 1px 5px; border-radius: 4px;
}
p .inline-code { font-size: 14px; padding: 2px 6px; border-radius: 5px; }

/* ---------- Callouts ---------- */
.callout {
  display: flex; gap: 12px; margin: 22px 0; padding: 14px 16px;
  border-radius: 10px; border-left: 4px solid var(--primary); background: var(--primary-soft);
}
.callout .body { font-size: 14px; line-height: 1.65; }
.callout svg { flex: none; margin-top: 2px; }
.callout.warn   { border-left-color: #F59E0B; background: rgba(245,158,11,.08); }
.callout.danger { border-left-color: #EF4444; background: rgba(239,68,68,.07); }
.callout.success{ border-left-color: #22C55E; background: rgba(34,197,94,.08); }

/* ---------- Tables ---------- */
.tbl {
  width: 100%; border-collapse: collapse; font-size: 14px;
  border: 1px solid var(--line); border-radius: 10px; overflow: hidden; margin: 0 0 4px;
}
.tbl th {
  text-align: left; padding: 10px 14px; background: var(--thead);
  font-weight: 600; border-bottom: 1px solid var(--line);
}
.tbl td { padding: 10px 14px; border-bottom: 1px solid var(--line); line-height: 1.6; }
.tbl tr:last-child td { border-bottom: none; }
.tbl tr.zebra { background: var(--zebra); }
.tbl td.mono { font-family: 'JetBrains Mono', monospace; font-size: 13px; }
.tbl td.muted { color: var(--muted); }
.tbl td.strong { font-weight: 600; white-space: nowrap; }
.tbl td.link { color: var(--primary); font-weight: 600; white-space: nowrap; cursor: pointer; }

.tag {
  font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 99px; white-space: nowrap;
}
.tag.req { background: var(--red-bg); color: var(--red-fg); }
.tag.opt { background: var(--inline-bg); color: var(--muted); }
.tag.ok  { background: var(--green-bg); color: var(--green-fg); }
.status-pill {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 26px; height: 22px; padding: 0 8px; border-radius: 99px;
  font-family: 'JetBrains Mono', monospace; font-size: 12px; font-weight: 600;
}

/* ---------- Markdown-rendered content ---------- */
.content h3 { font-size: 18px; font-weight: 600; margin: 24px 0 10px; }
.content h4 { font-size: 15px; font-weight: 600; margin: 18px 0 8px; }
.tbl-wrap { overflow-x: auto; margin: 0 0 4px; }
.md-list { margin: 0 0 14px; padding-left: 20px; display: flex; flex-direction: column; gap: 8px; }
.md-list li { font-size: 15px; line-height: 1.65; }
.md-hr { border: none; border-top: 1px solid var(--line); margin: 28px 0; }
.md-figure { margin: 16px 0; }
.md-figure img { border: 1px solid var(--line); border-radius: 10px; display: block; max-width: 100%; }

/* ---------- Code blocks ---------- */
.code {
  background: var(--code-bg); border-radius: 8px; overflow: hidden; margin-bottom: 18px;
}
.code-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 14px; border-bottom: 1px solid rgba(255,255,255,.08);
}
.code-head .lang { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: #94A3B8; }
.copy-btn {
  border: 1px solid rgba(255,255,255,.15); border-radius: 6px; background: transparent;
  color: #94A3B8; font-size: 12px; font-family: 'Inter', sans-serif; padding: 4px 10px; cursor: pointer;
}
.copy-btn:hover { color: #fff; border-color: rgba(255,255,255,.4); }
.code pre { margin: 0; padding: 16px 18px; overflow-x: auto; }
.code pre code { font-size: 14px; line-height: 1.7; color: #CBD5E1; }

/* JSON / curl syntax colors */
.tok-key { color: #7DD3FC; }
.tok-str { color: #FCD34D; }
.tok-num { color: #86EFAC; }
.tok-lit { color: #C4B5FD; }
.tok-punc { color: #E2E8F0; }
.tok-cmd { color: #86EFAC; }
.tok-flag { color: #CBD5E1; }

/* endpoint bar */
.endpoint {
  display: flex; align-items: center; gap: 12px; border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 14px; background: var(--side); margin-bottom: 28px;
}
.endpoint .method {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; font-weight: 600;
  padding: 3px 10px; border-radius: 6px;
}
.endpoint code {
  flex: 1; font-size: 14px; color: var(--ink); overflow-x: auto; white-space: nowrap;
}
.endpoint code .base { color: var(--muted); }
.endpoint .copy-ep {
  border: 1px solid var(--line); border-radius: 6px; background: var(--bg);
  color: var(--muted); font-size: 12px; font-family: 'Inter', sans-serif; padding: 5px 10px; cursor: pointer;
}
.endpoint .copy-ep:hover { color: var(--primary); border-color: var(--primary); }
.endpoint .dir {
  flex: none; font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 99px;
  background: var(--primary-soft); color: var(--primary); white-space: nowrap;
}

/* tabs */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.tab {
  border: none; background: transparent; font-family: 'Inter', sans-serif; font-size: 14px;
  font-weight: 600; padding: 9px 14px; cursor: pointer; color: var(--muted);
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }

/* ---------- Cards ---------- */
.doc-cards { display: flex; flex-direction: column; gap: 14px; margin-bottom: 36px; }
.doc-card {
  display: flex; align-items: center; gap: 18px; border: 1px solid var(--line);
  border-radius: 12px; padding: 22px; cursor: pointer; background: var(--card);
  transition: border-color .15s ease;
}
.doc-card:hover { border-color: var(--primary); }
.doc-card.disabled { opacity: .55; cursor: not-allowed; }
.doc-card .ic {
  flex: none; width: 44px; height: 44px; border-radius: 10px; background: var(--primary-soft);
  display: flex; align-items: center; justify-content: center;
}
.doc-card.disabled .ic { background: var(--inline-bg); }
.doc-card .bd { flex: 1; min-width: 0; }
.doc-card .ttl-row { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.doc-card .ttl { font-size: 16px; font-weight: 700; }
.doc-card .desc { font-size: 13px; color: var(--muted); line-height: 1.5; }
.doc-card .go { flex: none; font-size: 13px; font-weight: 600; color: var(--primary); }

.res-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; margin-bottom: 44px; }
.res-card {
  display: flex; align-items: center; gap: 10px; border: 1px solid var(--line);
  border-radius: 10px; padding: 14px 16px; cursor: pointer; background: var(--card);
  transition: border-color .15s ease; font-size: 14px; font-weight: 600;
}
.res-card:hover { border-color: var(--primary); }

.home-flow-h2 { border-top: none; padding-top: 0; font-size: 24px; font-weight: 700; margin: 8px 0 6px; }
.home-flow-sub { font-size: 13px; margin: 0 0 18px; }

/* home flow strip */
.flow-strip {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: stretch; gap: 8px;
}
.flow-box { border: 1px solid var(--line); border-radius: 10px; padding: 14px 12px; background: var(--card); }
.flow-box .n { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--primary); font-weight: 600; margin-bottom: 6px; }
.flow-box .t { font-size: 13px; font-weight: 600; line-height: 1.4; }
.flow-arrow { align-self: center; color: var(--muted); }

/* start cards (portal intro) */
.start-cards { display: flex; flex-direction: column; gap: 12px; }
.start-card {
  display: flex; align-items: center; gap: 14px; border: 1px solid var(--line);
  border-radius: 12px; padding: 16px 18px; cursor: pointer; background: var(--card);
  transition: border-color .15s ease;
}
.start-card:hover { border-color: var(--primary); }
.start-card .bd { flex: 1; min-width: 0; }
.start-card .t { font-size: 14px; font-weight: 700; margin-bottom: 2px; }
.start-card .d { font-size: 13px; color: var(--muted); line-height: 1.5; }
.start-card .arr { flex: none; color: var(--primary); }

/* ---------- Steps / timeline ---------- */
.steps { display: flex; flex-direction: column; }
.step { display: flex; gap: 16px; }
.step .rail { display: flex; flex-direction: column; align-items: center; }
.step .dot {
  flex: none; width: 30px; height: 30px; border-radius: 99px;
  background: var(--primary-soft); color: var(--primary);
  font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.step .line { flex: 1; width: 1px; background: var(--line); min-height: 20px; }
.step .bd { flex: 1; min-width: 0; padding-bottom: 24px; }
.step .head { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; flex-wrap: wrap; }
.step .t { font-size: 15px; font-weight: 700; }
.step .api-pill {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 600;
  padding: 2px 8px; border-radius: 99px; background: var(--primary-soft); color: var(--primary); cursor: pointer;
}
.step .d { font-size: 14px; color: var(--muted); line-height: 1.65; }

/* numbered list (ol variant) */
.numbered { padding-left: 0; list-style: none; display: flex; flex-direction: column; gap: 12px; }
.numbered li { display: flex; gap: 12px; align-items: flex-start; }
.numbered .num {
  flex: none; width: 24px; height: 24px; border-radius: 99px;
  background: var(--primary-soft); color: var(--primary);
  font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}

/* security rules */
.rules { display: flex; flex-direction: column; gap: 10px; }
.rule {
  display: flex; gap: 12px; align-items: flex-start; border: 1px solid var(--line);
  border-radius: 10px; padding: 14px 16px; background: var(--card);
}
.rule .mark { flex: none; font-size: 14px; font-weight: 700; width: 20px; text-align: center; margin-top: 1px; }
.rule .txt { font-size: 14px; line-height: 1.65; }

/* changelog */
.cl-row { display: flex; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.cl-date { flex: none; width: 110px; font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--muted); padding-top: 2px; }
.cl-body { flex: 1; min-width: 0; }
.cl-tag {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 600;
  padding: 2px 8px; border-radius: 99px; background: var(--primary-soft); color: var(--primary);
  display: inline-block; margin-bottom: 10px;
}

/* FAQ */
.faq { display: flex; flex-direction: column; gap: 14px; }
.faq-item { border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; background: var(--card); }
.faq-q { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; font-weight: 700; line-height: 1.5; }
.faq-n {
  flex: none; width: 22px; height: 22px; border-radius: 99px; background: var(--primary-soft);
  color: var(--primary); font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; margin-top: 1px;
}
.faq-a { font-size: 14px; color: var(--muted); line-height: 1.65; margin-top: 8px; padding-left: 32px; }

/* pager */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 48px; }
.pager .pg {
  border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; cursor: pointer;
  transition: border-color .15s ease;
}
.pager .pg:hover { border-color: var(--primary); }
.pager .pg.next { text-align: right; }
.pager .lbl { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.pager .ttl { font-size: 15px; font-weight: 600; color: var(--primary); }

/* ---------- Demo (live example) blocks ---------- */
.demo-badge {
  display: inline-block; font-size: 10px; font-weight: 700; letter-spacing: .06em;
  padding: 2px 8px; border-radius: 99px; background: var(--amber-bg); color: var(--amber-fg);
  margin-left: 8px; vertical-align: middle;
}
.demo-note { font-size: 13px; color: var(--muted); margin: 0 0 14px; line-height: 1.6; }
.demo-panel { min-height: 40px; }
.demo-loading { color: var(--muted); font-size: 13px; padding: 10px 0; }

.esim-card {
  display: flex; gap: 18px; align-items: center; border: 1px solid var(--line);
  border-radius: 12px; padding: 18px; background: var(--card); flex-wrap: wrap;
}
.esim-card .qr {
  flex: none; width: 132px; height: 132px; border-radius: 10px; background: #fff;
  padding: 6px; border: 1px solid var(--line);
}
.esim-card .qr img { width: 100%; height: 100%; display: block; }
.esim-card .meta { flex: 1; min-width: 200px; display: flex; flex-direction: column; gap: 8px; }
.esim-card .meta .row { font-size: 13px; }
.esim-card .meta .k { color: var(--muted); margin-right: 6px; }
.esim-card .meta .v { font-family: 'JetBrains Mono', monospace; word-break: break-all; }

/* footer */
.footer {
  margin-top: 64px; padding-top: 20px; border-top: 1px solid var(--line);
  display: flex; gap: 20px; font-size: 13px; color: var(--muted);
}
.footer a { color: var(--muted); }

/* ---------- TOC ---------- */
/* #tocHost cao bằng layout để .toc sticky bám theo suốt trang khi cuộn */
#tocHost { align-self: stretch; flex: 0 0 200px; }
.toc {
  position: sticky; top: 60px; width: 200px;
  height: calc(100vh - 60px); overflow-y: auto; padding: 36px 20px 40px 0;
}
.toc .lbl { font-size: 11px; font-weight: 700; letter-spacing: .08em; color: var(--muted); margin-bottom: 10px; }
.toc .list { display: flex; flex-direction: column; gap: 2px; border-left: 1px solid var(--line); }
.toc a { font-size: 13px; color: var(--muted); padding: 4px 0 4px 12px; text-decoration: none; }
.toc a:hover { color: var(--primary); text-decoration: none; }
.toc a.active { color: var(--primary); font-weight: 600; text-decoration: none; }

/* ---------- Search palette ---------- */
.search-overlay {
  position: fixed; inset: 0; z-index: 100; background: rgba(15,17,23,.45);
  display: none; align-items: flex-start; justify-content: center; padding-top: 12vh;
}
.search-overlay.open { display: flex; }
.search-box {
  width: 560px; max-width: 92vw; background: var(--bg); border: 1px solid var(--line);
  border-radius: 12px; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.search-box input {
  width: 100%; border: none; outline: none; padding: 16px 18px; font-size: 15px;
  background: var(--bg); color: var(--ink); font-family: inherit;
  border-bottom: 1px solid var(--line);
}
.search-results { max-height: 50vh; overflow-y: auto; padding: 6px; }
.search-result {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 8px; cursor: pointer;
}
.search-result.active, .search-result:hover { background: var(--primary-soft); }
.search-result .sr-title { font-size: 14px; font-weight: 500; color: var(--ink); }
.search-result .sr-sec { font-size: 12px; color: var(--muted); margin-left: auto; }
.search-empty { padding: 24px; text-align: center; color: var(--muted); font-size: 14px; }

/* ---------- Responsive ---------- */
.scrim { display: none; }
@media (max-width: 1100px) {
  .toc, #tocHost { display: none; }
}
@media (max-width: 860px) {
  .menu-btn { display: flex; }
  .search-btn { min-width: 0; }
  .search-btn .txt, .search-btn .kbd { display: none; }
  .sidebar {
    position: fixed; top: 60px; left: 0; z-index: 60; transform: translateX(-100%);
    transition: transform .2s ease; box-shadow: 4px 0 24px rgba(0,0,0,.12);
  }
  .sidebar.open { transform: translateX(0); }
  .scrim.open { display: block; position: fixed; inset: 60px 0 0 0; background: rgba(0,0,0,.35); z-index: 55; }
  .main { padding: 24px 18px 60px; }
  .res-grid { grid-template-columns: 1fr; }
  .flow-strip { grid-template-columns: 1fr; }
  .flow-arrow { transform: rotate(90deg); justify-self: center; }
  .pager { grid-template-columns: 1fr; }
  .cl-row { flex-direction: column; gap: 8px; }
}