/* Kanvaz user guide: clean, readable, dark/light, mobile friendly. No framework, no external fonts. */
:root {
  --bg: #ffffff; --bg-2: #f6f6fa; --bg-3: #ececf4;
  --text: #1c1c24; --text-2: #4a4a5c; --text-3: #7a7a8e;
  --line: #e2e2ec; --accent: #7c5cfc; --accent-2: #9d7fff; --accent-bg: rgba(124, 92, 252, .09);
  --code-bg: #f3f2fa; --shadow: 0 1px 2px rgba(20, 20, 40, .06), 0 6px 20px rgba(20, 20, 40, .06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "Cascadia Code", Consolas, Menlo, monospace;
  --top: 58px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e0e12; --bg-2: #15151b; --bg-3: #1d1d26;
    --text: #e8e8f0; --text-2: #b4b4c6; --text-3: #8383998f;
    --line: #272733; --accent: #a58bff; --accent-2: #b9a3ff; --accent-bg: rgba(165, 139, 255, .12);
    --code-bg: #181820; --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
  }
}
:root[data-theme="dark"] {
  --bg: #0e0e12; --bg-2: #15151b; --bg-3: #1d1d26;
  --text: #e8e8f0; --text-2: #b4b4c6; --text-3: #8f8fa6;
  --line: #272733; --accent: #a58bff; --accent-2: #b9a3ff; --accent-bg: rgba(165, 139, 255, .12);
  --code-bg: #181820; --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --text-3: #8f8fa6; } }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--top) + 16px); -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.7 var(--font); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: #fff; padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
.muted { color: var(--text-3); }

/* top bar */
.topbar { position: sticky; top: 0; z-index: 50; height: var(--top); display: flex; align-items: center; gap: 14px; padding: 0 20px;
  background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 17px; }
.brand:hover { text-decoration: none; }
.brand em { font-style: normal; color: var(--text-3); font-weight: 500; }
.brand img { border-radius: 50%; }
.top-links { margin-left: auto; display: flex; gap: 4px; }
.top-links a { color: var(--text-2); padding: 6px 10px; border-radius: 8px; font-size: 14px; }
.top-links a:hover { background: var(--bg-3); text-decoration: none; color: var(--text); }
.icon-btn { width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; border: 0; border-radius: 9px; background: transparent; color: var(--text-2); cursor: pointer; }
.icon-btn:hover { background: var(--bg-3); color: var(--text); }
.menu-btn { display: none; }
.i-moon { display: none; }
:root[data-theme="dark"] .i-sun { display: none; } :root[data-theme="dark"] .i-moon { display: block; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .i-sun { display: none; } :root:not([data-theme="light"]) .i-moon { display: block; } }

/* page frame */
.shell { display: grid; grid-template-columns: 272px minmax(0, 1fr) 236px; max-width: 1480px; margin: 0 auto; }
.sidebar { position: sticky; top: var(--top); align-self: start; height: calc(100vh - var(--top)); overflow-y: auto; padding: 22px 12px 40px 20px; border-right: 1px solid var(--line); }
.nav-group { margin-bottom: 20px; }
.nav-title { font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-3); font-weight: 700; padding: 0 10px 6px; }
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li a { display: block; padding: 6px 10px; border-radius: 8px; color: var(--text-2); font-size: 14.5px; line-height: 1.4; }
.sidebar li a:hover { background: var(--bg-3); color: var(--text); text-decoration: none; }
.sidebar li a.active { background: var(--accent-bg); color: var(--accent); font-weight: 600; }
.content { padding: 34px 40px 60px; min-width: 0; }
.doc { max-width: 780px; }
.toc { position: sticky; top: var(--top); align-self: start; max-height: calc(100vh - var(--top)); overflow-y: auto; padding: 30px 16px 30px 8px; font-size: 13.5px; }
.toc[hidden] { display: none; }
.toc-title { font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-3); font-weight: 700; margin-bottom: 8px; }
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.toc li a { display: block; padding: 3px 12px; color: var(--text-3); margin-left: -1px; border-left: 2px solid transparent; line-height: 1.4; }
.toc li.l3 a { padding-left: 24px; }
.toc li a:hover { color: var(--text); text-decoration: none; }
.toc li a.on { color: var(--accent); border-left-color: var(--accent); }
.scrim { display: none; }

/* article typography */
.doc h1 { font-size: 2.15rem; line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.02em; }
.doc h2 { font-size: 1.45rem; margin: 2.2em 0 .6em; padding-bottom: .35em; border-bottom: 1px solid var(--line); letter-spacing: -.01em; }
.doc h3 { font-size: 1.12rem; margin: 1.7em 0 .4em; }
.doc h4 { font-size: 1rem; margin: 1.4em 0 .3em; color: var(--text-2); }
.doc h1 + p em:only-child, .doc > p:first-of-type > em { color: var(--text-3); }
.doc p, .doc ul, .doc ol { margin: 0 0 1em; }
.doc li { margin: .25em 0; }
.doc li > ul, .doc li > ol { margin: .25em 0 .5em; }
.doc a { text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent); text-underline-offset: 3px; }
.doc a:hover { text-decoration-color: var(--accent); }
.doc .anchor { opacity: 0; margin-left: .35em; font-weight: 400; text-decoration: none; color: var(--text-3); }
.doc h2:hover .anchor, .doc h3:hover .anchor { opacity: 1; }
.doc code { font: .88em var(--mono); background: var(--code-bg); border: 1px solid var(--line); padding: .12em .4em; border-radius: 6px; }
.doc pre { position: relative; background: var(--code-bg); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; overflow-x: auto; margin: 0 0 1.2em; line-height: 1.55; }
.doc pre code { background: none; border: 0; padding: 0; font-size: .86em; }
.copy { position: absolute; top: 8px; right: 8px; font: 12px var(--font); padding: 4px 9px; border-radius: 7px; border: 1px solid var(--line); background: var(--bg); color: var(--text-2); cursor: pointer; opacity: 0; }
.doc pre:hover .copy, .copy:focus-visible { opacity: 1; }
.doc blockquote { margin: 0 0 1.2em; padding: 12px 16px; border-left: 4px solid var(--accent); background: var(--accent-bg); border-radius: 0 10px 10px 0; color: var(--text); }
.doc blockquote p:last-child { margin-bottom: 0; }
.doc hr { border: 0; border-top: 1px solid var(--line); margin: 2.2em 0; }
.doc img { max-width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--line); box-shadow: var(--shadow); display: block; margin: 1.2em 0; }
.doc table { display: block; overflow-x: auto; border-collapse: collapse; width: 100%; margin: 0 0 1.3em; font-size: .94rem; }
.doc th, .doc td { padding: 9px 13px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.doc th { background: var(--bg-2); font-weight: 650; white-space: nowrap; border-top: 1px solid var(--line); }
.doc tr:hover td { background: var(--bg-2); }
kbd, .doc kbd { font: .82em var(--mono); background: var(--bg-2); border: 1px solid var(--line); border-bottom-width: 2px; padding: .1em .45em; border-radius: 6px; white-space: nowrap; }

/* landing blocks (guide home) */
.hero { margin: 0 0 2rem; padding: 28px 28px 24px; border: 1px solid var(--line); border-radius: 18px;
  background: radial-gradient(1200px 300px at 0% 0%, var(--accent-bg), transparent 60%), var(--bg-2); }
.hero h1 { margin: 0 0 .3em; }
.hero p { margin: 0 0 .8em; color: var(--text-2); font-size: 1.06rem; }
.hero .btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.btn { display: inline-block; padding: 9px 16px; border-radius: 10px; background: var(--accent); color: #fff !important; font-weight: 600; text-decoration: none !important; }
.btn.ghost { background: transparent; color: var(--text) !important; border: 1px solid var(--line); }
.btn:hover { filter: brightness(1.08); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; margin: 0 0 1.6rem; }
.cards a { display: block; padding: 16px 16px 14px; border: 1px solid var(--line); border-radius: 14px; background: var(--bg); color: var(--text); text-decoration: none !important; transition: border-color .12s, transform .12s, box-shadow .12s; }
.cards a:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.cards b { display: block; margin-bottom: 4px; font-size: 1rem; }
.cards span { color: var(--text-2); font-size: .9rem; line-height: 1.45; display: block; }

/* prev / next + footer */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; max-width: 780px; margin-top: 3rem; }
.pager a { display: block; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; color: var(--text); font-weight: 600; text-decoration: none; }
.pager a:hover { border-color: var(--accent); }
.pager a span { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); font-weight: 600; margin-bottom: 2px; }
.pager .next { text-align: right; grid-column: 2; }
.pager .prev { grid-column: 1; }
.foot { max-width: 780px; margin-top: 2.4rem; padding-top: 1.2rem; border-top: 1px solid var(--line); font-size: 14px; color: var(--text-2); }
.foot p { margin: 0 0 .4em; }

/* responsive */
@media (max-width: 1180px) { .shell { grid-template-columns: 260px minmax(0, 1fr); } .toc { display: none !important; } }
@media (max-width: 820px) {
  .menu-btn { display: inline-flex; }
  .top-links { display: none; }
  .theme-spacer { margin-left: auto; }
  #theme-btn { margin-left: auto; }
  .shell { display: block; }
  .sidebar { position: fixed; top: var(--top); left: 0; bottom: 0; width: min(86vw, 320px); height: auto; background: var(--bg); z-index: 60; transform: translateX(-102%); transition: transform .2s ease; box-shadow: var(--shadow); }
  body.nav-open .sidebar { transform: none; }
  body.nav-open .scrim { display: block; position: fixed; inset: var(--top) 0 0 0; background: rgba(0, 0, 0, .45); z-index: 55; }
  .content { padding: 24px 18px 48px; }
  .doc h1 { font-size: 1.75rem; }
  .pager { grid-template-columns: 1fr; } .pager .next, .pager .prev { grid-column: 1; text-align: left; }
}
@media print { .topbar, .sidebar, .toc, .pager, .scrim, .copy { display: none !important; } .shell { display: block; } .content { padding: 0; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }

/* support call-to-action + star button */
.star-btn { border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px !important; color: var(--accent) !important; font-weight: 600; }
.star-btn:hover { background: var(--accent); color: #fff !important; }
.support { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; margin: 2.4rem 0 1.2rem; padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; background: var(--bg-soft, var(--bg)); }
.support-text b { display: block; font-size: 1.02rem; margin-bottom: 2px; }
.support-text span { color: var(--text-2); font-size: .92rem; }
.support-links { display: flex; flex-wrap: wrap; gap: 8px; }
.support-links .btn { padding: 7px 13px; font-size: .9rem; }
.shot { margin: 1.2rem 0 1.6rem; }
.shot img { width: 100%; border-radius: 12px; border: 1px solid var(--line); box-shadow: var(--shadow); }
.shot figcaption { color: var(--text-2); font-size: .85rem; margin-top: 6px; text-align: center; }
@media print { .support, .star-btn { display: none; } }

/* landing page */
.top-links.always { display: flex; }
@media (max-width: 640px) { .top-links.always a:not(.star-btn):not(:first-child) { display: none; } }
.land { max-width: 1040px; margin: 0 auto; padding: 0 20px 40px; }
.l-hero { text-align: center; padding: 56px 0 24px; }
.pill { display: inline-block; padding: 5px 14px; border: 1px solid var(--line); border-radius: 999px; color: var(--accent); font-size: .82rem; font-weight: 600; }
.l-hero h1 { font-size: clamp(2.4rem, 6vw, 4rem); line-height: 1.05; margin: 18px 0 14px; letter-spacing: -.02em; }
.l-hero h1 em { font-style: normal; color: var(--accent); }
.lead { max-width: 640px; margin: 0 auto 22px; font-size: 1.12rem; color: var(--text-2); }
.l-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.btn.big { padding: 12px 22px; font-size: 1rem; border-radius: 12px; }
.fine { color: var(--text-2); font-size: .85rem; margin-top: 12px; }
.l-shot { margin: 34px auto 0; max-width: 940px; }
.l-shot img { width: 100%; border-radius: 14px; border: 1px solid var(--line); box-shadow: var(--shadow); }
.land .stats { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 44px; padding: 30px 0; }
.land .stat { text-align: center; }
.land .stat-value { font-size: 1.7rem; font-weight: 700; }
.land .stat-label { font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--text-2); }
.l-sec { padding: 34px 0; }
.l-sec h2 { font-size: 1.7rem; margin: 0 0 4px; text-align: center; border: 0; }
.l-sec .sub { text-align: center; color: var(--text-2); margin: 0 0 24px; }
.feats { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 16px; }
.feat { display: block; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: var(--bg); color: var(--text); text-decoration: none !important; transition: transform .12s, border-color .12s, box-shadow .12s; }
.feat:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow); }
.feat img { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; object-position: top left; border-bottom: 1px solid var(--line); }
.feat b { display: block; padding: 12px 14px 2px; }
.feat span { display: block; padding: 0 14px 14px; color: var(--text-2); font-size: .9rem; line-height: 1.45; }
.l-split { display: grid; grid-template-columns: 1.3fr 1fr; gap: 28px; align-items: center; }
.l-split h2 { text-align: left; }
.ticks { list-style: none; margin: 0; padding: 18px 20px; border: 1px solid var(--line); border-radius: 14px; }
.ticks li { padding: 6px 0 6px 26px; position: relative; }
.ticks li::before { content: "\2713"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
@media (max-width: 760px) { .l-split { grid-template-columns: 1fr; } }
.table-wrap { overflow-x: auto; }
table.compare { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.compare th, table.compare td { padding: 9px 12px; border-bottom: 1px solid var(--line); text-align: left; }
table.compare .highlight-col { background: rgba(157, 127, 255, .08); font-weight: 600; }
table.compare .yes { color: #2fa37a; }
table.compare .no { color: var(--text-2); }
.l-cta-box { text-align: center; border: 1px solid var(--line); border-radius: 18px; padding: 34px 20px; margin-top: 20px; }
.l-cta-box p { max-width: 560px; margin: 0 auto 18px; color: var(--text-2); }
.l-foot { text-align: center; color: var(--text-2); font-size: .85rem; padding: 26px 0 8px; }

/* search */
.search-btn { display: inline-flex; align-items: center; gap: 8px; height: 36px; padding: 0 10px 0 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg-2, transparent); color: var(--text-2); font: inherit; font-size: 14px; cursor: pointer; }
.search-btn:hover { border-color: var(--accent); color: var(--text); }
.search-btn kbd, .sm kbd { font: 600 11px ui-monospace, Consolas, monospace; padding: 1px 6px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; color: var(--text-2); background: var(--bg); }
@media (max-width: 640px) { .search-btn span, .search-btn kbd { display: none; } .search-btn { width: 36px; padding: 0; justify-content: center; } }
.sm { position: fixed; inset: 0; z-index: 200; background: rgba(10, 9, 24, .62); backdrop-filter: blur(3px); display: flex; justify-content: center; align-items: flex-start; padding: 10vh 16px 0; }
.sm[hidden] { display: none; }
.sm-box { width: min(680px, 100%); background: var(--bg); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 30px 80px rgba(0, 0, 0, .5); overflow: hidden; }
.sm-box input { width: 100%; border: 0; border-bottom: 1px solid var(--line); padding: 18px 20px; font: inherit; font-size: 1.05rem; background: transparent; color: var(--text); outline: none; }
#sm-list { list-style: none; margin: 0; padding: 6px; max-height: 52vh; overflow: auto; }
#sm-list li a { display: block; padding: 10px 14px; border-radius: 10px; color: var(--text); text-decoration: none; }
#sm-list li a b { display: block; font-size: .98rem; }
#sm-list li a span { display: block; color: var(--text-2); font-size: .84rem; line-height: 1.4; margin-top: 2px; }
#sm-list li.on a, #sm-list li a:hover { background: var(--bg-3, rgba(124, 92, 252, .12)); }
#sm-list mark { background: rgba(240, 180, 94, .35); color: inherit; border-radius: 3px; padding: 0 1px; }
#sm-list .none { padding: 18px 16px; color: var(--text-2); }
.sm-foot { display: flex; gap: 18px; padding: 10px 16px; border-top: 1px solid var(--line); color: var(--text-2); font-size: .78rem; }
body.sm-open { overflow: hidden; }