/* Manual do Blix CRM — central de ajuda. Identidade: laranja Blix, azul-marinho do app, tipografia Geist. */
:root{
  --bg:#F5F6FA;--surface:#fff;--surface-2:#F7F8FC;--line:#E4E7EF;--line-2:#D3D8E5;
  --text:#10131C;--muted:#586075;--faint:#8A91A6;
  --accent:#F97316;--accent-2:#EA580C;--accent-ink:#9A3412;--accent-soft:#FFF1E4;--accent-line:#FED7AA;
  --navy:#0D1530;--navy-2:#16204A;--ember:#7C2D12;--ember-deep:#431407;
  --ok:#15803D;--ok-soft:#E8F5EE;--warn:#B45309;--warn-soft:#FFF4DC;--bad:#C62828;--bad-soft:#FDECEC;--info:#1D4ED8;--info-soft:#E8EFFE;
  --r:14px;--shadow:0 1px 2px rgba(13,21,48,.05),0 8px 28px -12px rgba(13,21,48,.14);--shadow-lg:0 30px 70px -28px rgba(13,21,48,.45);
  --side:292px;--toc:230px;--head:64px;--ease:cubic-bezier(.2,.8,.2,1);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0A0F20;--surface:#111933;--surface-2:#0F1630;--line:#222C4F;--line-2:#2E3A63;
    --text:#EEF1FA;--muted:#A5ADC6;--faint:#7C85A3;
    --accent-soft:#2A1A10;--accent-line:#5A3418;--accent-ink:#FDBA74;
    --ok-soft:#10261B;--warn-soft:#2A2110;--bad-soft:#2B1417;--info-soft:#121F44;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -14px rgba(0,0,0,.6);color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0A0F20;--surface:#111933;--surface-2:#0F1630;--line:#222C4F;--line-2:#2E3A63;
  --text:#EEF1FA;--muted:#A5ADC6;--faint:#7C85A3;
  --accent-soft:#2A1A10;--accent-line:#5A3418;--accent-ink:#FDBA74;
  --ok-soft:#10261B;--warn-soft:#2A2110;--bad-soft:#2B1417;--info-soft:#121F44;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -14px rgba(0,0,0,.6);color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--head) + 24px)}
body{font-family:"Geist",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--accent-ink);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
img{max-width:100%;display:block}
.ic{width:1.15em;height:1.15em;flex:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-999px;top:8px;background:var(--accent);color:#fff;padding:8px 14px;border-radius:8px;z-index:200}
.skip:focus{left:8px}

/* ───── cabeçalho ───── */
.top{position:sticky;top:0;z-index:60;height:var(--head);display:flex;align-items:center;gap:18px;padding:0 24px;background:color-mix(in srgb,var(--surface) 86%,transparent);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);font-weight:650;letter-spacing:-.01em}
.brand img{height:34px;width:auto}
.brand .sep{width:1px;height:22px;background:var(--line-2)}
.brand span{font-size:15px;color:var(--muted);font-weight:500}
.burger{display:none;border:1px solid var(--line);background:var(--surface);border-radius:10px;width:40px;height:40px;place-items:center;cursor:pointer;color:var(--text)}
.backsite{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 15px 0 12px;border-radius:12px;background:var(--accent-soft);border:1px solid var(--accent-line);color:var(--accent-ink);font-weight:600;font-size:14px;white-space:nowrap;transition:background .2s,transform .2s var(--ease)}
.backsite:hover{text-decoration:none;background:color-mix(in srgb,var(--accent-soft) 60%,var(--accent-line));transform:translateX(-2px)}
.backsite .ic{width:18px;height:18px}
.from-app .backsite{display:none}
.search{position:relative;flex:1;max-width:520px;margin-left:auto}
.search input{width:100%;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--surface-2);padding:0 52px 0 42px;font:inherit;font-size:14.5px;color:var(--text);transition:border-color .2s,box-shadow .2s,background .2s}
.search input::placeholder{color:var(--faint)}
.search input:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 22%,transparent);background:var(--surface)}
.search .ic{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--faint);width:18px;height:18px}
.search kbd{position:absolute;right:12px;top:50%;transform:translateY(-50%);font:600 11px/1 inherit;border:1px solid var(--line-2);border-radius:6px;padding:4px 7px;color:var(--faint);background:var(--surface)}
.results{position:absolute;left:0;right:0;top:calc(100% + 8px);background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);max-height:min(70vh,520px);overflow:auto;padding:8px;display:none}
.results.on{display:block}
.results a{display:block;padding:10px 12px;border-radius:10px;color:var(--text)}
.results a:hover,.results a.sel{background:var(--accent-soft);text-decoration:none}
.results b{display:block;font-weight:600;font-size:14.5px}
.results small{display:block;color:var(--muted);font-size:12.5px}
.results mark{background:color-mix(in srgb,var(--accent) 28%,transparent);color:inherit;border-radius:3px}
.results .none{padding:18px;color:var(--muted);font-size:14px;text-align:center}
.cta{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 16px;border-radius:12px;background:linear-gradient(135deg,var(--accent-2),#C2410C);color:#fff;font-weight:600;font-size:14px;box-shadow:0 10px 22px -12px rgba(194,65,12,.9);white-space:nowrap}
.cta:hover{text-decoration:none;filter:brightness(1.06)}
.theme{border:1px solid var(--line);background:var(--surface);border-radius:12px;width:42px;height:42px;display:grid;place-items:center;cursor:pointer;color:var(--muted)}
.theme:hover{color:var(--text)}

/* ───── estrutura ───── */
.shell{display:grid;grid-template-columns:var(--side) minmax(0,1fr);min-height:calc(100vh - var(--head))}
.side{position:sticky;top:var(--head);align-self:start;height:calc(100vh - var(--head));overflow:auto;padding:22px 16px 40px 20px;border-right:1px solid var(--line);background:var(--surface)}
.side h6{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);font-weight:650;margin:22px 10px 8px}
.side h6:first-child{margin-top:0}
.side a{display:flex;align-items:center;gap:11px;padding:8px 10px;border-radius:10px;color:var(--muted);font-size:14.5px;font-weight:500;line-height:1.3;transition:background .15s,color .15s}
.side a .ic{color:var(--faint);transition:color .15s}
.side a:hover{background:var(--surface-2);color:var(--text);text-decoration:none}
.side a.on{background:var(--accent-soft);color:var(--accent-ink);font-weight:600}
.side a.on .ic{color:var(--accent-2)}
.side a.sub{margin-left:22px;padding:6px 10px;font-size:13.5px;border-left:1px solid var(--line);border-radius:0 8px 8px 0}
.side a.sub.on{border-left-color:var(--accent)}
.scrim{display:none}

.main{display:grid;grid-template-columns:minmax(0,1fr) var(--toc);gap:44px;padding:44px 48px 80px;max-width:1240px;width:100%;margin:0 auto}
.main.nostoc{grid-template-columns:minmax(0,1fr);max-width:1100px}
article{min-width:0}
.toc{position:sticky;top:calc(var(--head) + 28px);align-self:start;max-height:calc(100vh - var(--head) - 56px);overflow:auto;font-size:13.5px}
.toc h6{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);font-weight:650;margin-bottom:10px}
.toc a{display:block;color:var(--muted);padding:5px 0 5px 14px;border-left:2px solid var(--line);line-height:1.4}
.toc a:hover{color:var(--text);text-decoration:none}
.toc a.on{color:var(--accent-ink);border-left-color:var(--accent);font-weight:600}
.toc a.l3{padding-left:28px;font-size:13px}

/* ───── cabeçalho de página ───── */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--faint);margin-bottom:14px}
.crumbs a{color:var(--muted)}
.crumbs .ic{width:14px;height:14px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:650;letter-spacing:.06em;text-transform:uppercase;color:var(--accent-ink);background:var(--accent-soft);border:1px solid var(--accent-line);padding:6px 12px;border-radius:99px}
h1{font-size:clamp(30px,4.2vw,42px);line-height:1.1;letter-spacing:-.03em;font-weight:680;margin:16px 0 14px}
.lead{font-size:18.5px;line-height:1.6;color:var(--muted);max-width:68ch}
.meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);background:var(--surface);border:1px solid var(--line);padding:7px 12px;border-radius:99px}
.chip .ic{color:var(--accent-2);width:16px;height:16px}
.chip b{color:var(--text);font-weight:600}

/* ───── texto ───── */
article h2{font-size:27px;line-height:1.2;letter-spacing:-.022em;font-weight:660;margin:56px 0 14px;padding-top:6px;position:relative}
article h2 .anchor{position:absolute;left:-26px;top:10px;opacity:0;color:var(--faint);font-weight:500;transition:opacity .15s}
article h2:hover .anchor{opacity:1;text-decoration:none}
article h3{font-size:19px;letter-spacing:-.012em;font-weight:650;margin:34px 0 10px}
article p{margin:0 0 16px;max-width:72ch}
article ul,article ol{margin:0 0 18px 4px;padding-left:22px;max-width:72ch}
article li{margin:6px 0}
article li::marker{color:var(--accent-2)}
article strong{font-weight:640}
article code,.kbd{font:600 .86em/1 ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--surface-2);border:1px solid var(--line);padding:.2em .45em;border-radius:6px}
.kbd{box-shadow:0 1px 0 var(--line-2);border-radius:7px}
.btnref{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:.92em;background:var(--accent-soft);color:var(--accent-ink);border:1px solid var(--accent-line);padding:.12em .6em;border-radius:8px;white-space:nowrap}
.btnref.dark{background:var(--navy);border-color:var(--navy);color:#fff}
.btnref.grey{background:var(--surface-2);border-color:var(--line-2);color:var(--text)}

/* ───── "para que serve" ───── */
.purpose{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;margin:30px 0 6px;padding:20px 22px;border-radius:var(--r);background:linear-gradient(135deg,var(--accent-soft),color-mix(in srgb,var(--accent-soft) 40%,var(--surface)));border:1px solid var(--accent-line)}
.purpose .ico{width:44px;height:44px;border-radius:12px;background:var(--accent-2);color:#fff;display:grid;place-items:center;box-shadow:0 10px 22px -10px rgba(194,65,12,.8)}
.purpose .ico .ic{width:22px;height:22px}
.purpose h4{font-size:14px;letter-spacing:.04em;text-transform:uppercase;color:var(--accent-ink);margin-bottom:4px}
.purpose p{margin:0;color:var(--text);max-width:none}

/* ───── callouts ───── */
.callout{display:grid;grid-template-columns:auto 1fr;gap:14px;margin:24px 0;padding:16px 18px;border-radius:var(--r);border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow)}
.callout .ico{width:34px;height:34px;border-radius:10px;display:grid;place-items:center}
.callout .ico .ic{width:19px;height:19px}
.callout h5{font-size:14.5px;font-weight:650;margin-bottom:2px}
.callout p,.callout ul{margin:0 0 6px;font-size:15.5px;max-width:none}
.callout p:last-child,.callout ul:last-child{margin-bottom:0}
.callout.dica{background:var(--ok-soft);border-color:color-mix(in srgb,var(--ok) 28%,var(--line))}.callout.dica .ico{background:var(--ok);color:#fff}
.callout.atencao{background:var(--warn-soft);border-color:color-mix(in srgb,var(--warn) 30%,var(--line))}.callout.atencao .ico{background:var(--warn);color:#fff}
.callout.importante{background:var(--bad-soft);border-color:color-mix(in srgb,var(--bad) 28%,var(--line))}.callout.importante .ico{background:var(--bad);color:#fff}
.callout.nota{background:var(--info-soft);border-color:color-mix(in srgb,var(--info) 26%,var(--line))}.callout.nota .ico{background:var(--info);color:#fff}
.callout.exemplo{background:var(--surface);border-style:dashed;border-color:var(--line-2)}.callout.exemplo .ico{background:var(--navy);color:#fff}

/* ───── passo a passo ───── */
.steps{list-style:none;margin:26px 0 30px!important;padding:0!important;counter-reset:s;max-width:none!important}
.steps>li{position:relative;margin:0;padding:0 0 26px 62px;counter-increment:s}
.steps>li::before{content:counter(s);position:absolute;left:0;top:0;width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:700;font-size:17px;display:grid;place-items:center;box-shadow:0 10px 20px -10px rgba(194,65,12,.85),0 0 0 5px var(--accent-soft)}
.steps>li::after{content:"";position:absolute;left:20px;top:50px;bottom:6px;width:2px;background:linear-gradient(var(--accent-line),transparent);border-radius:2px}
.steps>li:last-child{padding-bottom:4px}.steps>li:last-child::after{display:none}
.steps h4{font-size:17px;font-weight:650;letter-spacing:-.01em;line-height:1.35;margin:8px 0 4px}
.steps li p{margin:0 0 8px}
.steps li>.fig{margin:14px 0 4px}

/* ───── figuras (moldura de navegador + legenda numerada) ───── */
.fig{margin:28px 0;border-radius:16px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);overflow:hidden}
.fig .bar{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--surface-2);border-bottom:1px solid var(--line)}
.fig .dots{display:flex;gap:6px}.fig .dots i{width:10px;height:10px;border-radius:50%;background:var(--line-2)}
.fig .url{flex:1;text-align:center;font-size:12px;color:var(--faint);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:4px 12px;max-width:380px;margin:0 auto;font-family:ui-monospace,Menlo,monospace;letter-spacing:.01em}
.fig .zoom{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--muted);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:4px 9px;cursor:zoom-in;font-family:inherit}
.fig .zoom:hover{color:var(--text);border-color:var(--line-2)}
.fig .zoom .ic{width:14px;height:14px}
.fig .shot{display:block;width:100%;height:auto;cursor:zoom-in;background:var(--surface-2)}
.fig.plain .bar{display:none}
.fig.fit{margin-left:auto;margin-right:auto}
.fig.beside .url{display:none}
.fig.beside .sidebody{display:flex;align-items:flex-start}
.fig.beside .sidebody .shot{flex:none;width:var(--iw);height:auto}
.fig.beside .sidebody .legend{flex:1;min-width:0;grid-template-columns:1fr;border-top:0;border-left:1px solid var(--line)}
@media (max-width:760px){.fig.beside .sidebody{display:block}.fig.beside .sidebody .shot{width:100%}.fig.beside .sidebody .legend{border-left:0;border-top:1px solid var(--line)}}
.fig.fit .url{display:none}
.fig.fit .bar{justify-content:space-between}
.fig figcaption{padding:12px 16px;font-size:14px;color:var(--muted);border-top:1px solid var(--line)}
.fig figcaption b{color:var(--text)}
.legend{list-style:none;margin:0!important;padding:16px 18px 18px!important;display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:10px 22px;border-top:1px solid var(--line);background:var(--surface);max-width:none!important;counter-reset:l}
.legend li{display:grid;grid-template-columns:28px 1fr;gap:10px;align-items:start;margin:0;font-size:14.8px;line-height:1.5;counter-increment:l}
.legend li::before{content:counter(l);width:26px;height:26px;border-radius:50%;background:var(--accent-2);color:#fff;font-weight:700;font-size:13px;display:grid;place-items:center;margin-top:1px;box-shadow:0 0 0 3px var(--accent-soft)}
.legend li b{font-weight:640}
.pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:28px 0}
.pair .fig{margin:0}
.pair .legend{grid-template-columns:1fr}

/* ───── tabelas ───── */
.tbl{margin:22px 0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--surface);box-shadow:var(--shadow)}
.tbl table{width:100%;border-collapse:collapse;font-size:15px}
.tbl th{text-align:left;font-size:12px;letter-spacing:.07em;text-transform:uppercase;color:var(--faint);font-weight:650;padding:12px 16px;background:var(--surface-2);border-bottom:1px solid var(--line)}
.tbl td{padding:13px 16px;border-top:1px solid var(--line);vertical-align:top;line-height:1.5}
.tbl tr:first-child td{border-top:0}
.tbl td:first-child{font-weight:620;white-space:nowrap}
.tbl .req{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--bad);background:var(--bad-soft);padding:2px 7px;border-radius:99px;margin-left:8px;vertical-align:1px}
.tbl .opt{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--faint);background:var(--surface-2);padding:2px 7px;border-radius:99px;margin-left:8px;vertical-align:1px;border:1px solid var(--line)}

/* ───── cartões ───── */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin:24px 0}
.card{display:flex;flex-direction:column;gap:8px;padding:20px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);color:var(--text);transition:transform .25s var(--ease),border-color .2s,box-shadow .25s}
.card:hover{transform:translateY(-3px);border-color:var(--accent-line);text-decoration:none;box-shadow:0 18px 40px -20px rgba(194,65,12,.45)}
.card .ico{width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--accent-2);display:grid;place-items:center;border:1px solid var(--accent-line)}
.card h3{font-size:17px;font-weight:650;margin:6px 0 0;letter-spacing:-.01em}
.card p{font-size:14.5px;color:var(--muted);line-height:1.5;margin:0;max-width:none}
.card .go{margin-top:auto;padding-top:6px;font-size:13.5px;font-weight:600;color:var(--accent-ink);display:inline-flex;align-items:center;gap:6px}

/* ───── navegação entre páginas ───── */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:64px 0 0;padding-top:28px;border-top:1px solid var(--line)}
.pager a{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border-radius:var(--r);border:1px solid var(--line);background:var(--surface);color:var(--text);transition:border-color .2s,transform .25s var(--ease)}
.pager a:hover{border-color:var(--accent-line);text-decoration:none;transform:translateY(-2px)}
.pager small{color:var(--faint);font-size:12.5px;display:flex;align-items:center;gap:6px}
.pager b{font-size:16px;font-weight:620}
.pager .next{text-align:right;align-items:flex-end}.pager .next small{flex-direction:row-reverse}
.helpbox{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin:36px 0 0;padding:22px 24px;border-radius:var(--r);background:var(--navy);color:#fff}
.helpbox h4{font-size:17px;font-weight:650}
.helpbox p{margin:4px 0 0;color:#B8C0DB;font-size:14.5px;max-width:52ch}
.helpbox .btns{display:flex;gap:10px;flex-wrap:wrap}
.helpbox a{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:11px;background:#fff;color:var(--navy);font-weight:620;font-size:14px}
.helpbox a.o{background:var(--accent-2);color:#fff}
.helpbox a:hover{text-decoration:none;filter:brightness(.96)}
footer.foot{border-top:1px solid var(--line);padding:26px 48px;color:var(--faint);font-size:13.5px;display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;background:var(--surface)}

/* ───── início ───── */
.hero{position:relative;overflow:hidden;isolation:isolate;color:#fff;padding:72px 48px 84px;background:linear-gradient(150deg,#9A3412 0%,#7C2D12 48%,#431407 100%)}
.hero::before,.hero::after{content:"";position:absolute;z-index:-1;border-radius:50%;filter:blur(70px);pointer-events:none}
.hero::before{width:560px;height:560px;right:-160px;bottom:-240px;background:radial-gradient(circle,#F97316,rgba(249,115,22,0) 70%);opacity:.8}
.hero::after{width:380px;height:380px;left:-120px;top:-140px;background:radial-gradient(circle,#FDBA74,rgba(253,186,116,0) 70%);opacity:.32}
.hero .in{max-width:1100px;margin:0 auto}
.hero .tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);padding:7px 14px;border-radius:99px}
.hero h1{font-size:clamp(34px,5.4vw,58px);letter-spacing:-.035em;line-height:1.04;margin:22px 0 16px;max-width:16ch}
.hero p{font-size:19px;color:#FFE2CC;max-width:56ch;line-height:1.6}
.hero .search{max-width:620px;margin:34px 0 0}
.hero .search input{height:56px;border-radius:16px;font-size:16.5px;padding-left:52px;background:#fff;color:#10131C;border-color:transparent;box-shadow:0 24px 50px -22px rgba(0,0,0,.6)}
.hero .search .ic{left:18px;width:21px;height:21px;color:#9A3412}
.hero .results{position:relative;left:auto;right:auto;top:auto;margin-top:10px;box-shadow:0 24px 50px -22px rgba(0,0,0,.6)}
.hero .quick{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.hero .quick a{color:#fff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:8px 14px;border-radius:99px;font-size:14px;font-weight:500}
.hero .quick a:hover{background:rgba(255,255,255,.2);text-decoration:none}
.home{max-width:1100px;margin:0 auto;padding:56px 48px 40px}
.home h2{font-size:27px;letter-spacing:-.022em;font-weight:660;margin:0 0 6px}
.home .sub{color:var(--muted);margin:0 0 22px;max-width:64ch}
.sec{margin:0 0 56px}
.start{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.start .card{padding:24px;background:linear-gradient(180deg,var(--surface),var(--surface-2))}
.preface{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:start;padding:30px;border-radius:20px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.preface h2{margin-bottom:12px}
.preface p{color:var(--muted);margin:0 0 14px;max-width:none}
.how{display:grid;gap:12px}
.how div{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center;padding:14px 16px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);font-size:14.8px}
.how .n{width:28px;height:28px;border-radius:50%;background:var(--accent-2);color:#fff;font-weight:700;font-size:13px;display:grid;place-items:center;box-shadow:0 0 0 3px var(--accent-soft)}
.how .sw{display:inline-block;width:18px;height:18px;border-radius:5px;vertical-align:-3px;margin-right:6px}
.tasks{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 18px}
.tasks a{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:12px;background:var(--surface);border:1px solid var(--line);color:var(--text);font-weight:540;transition:border-color .2s,transform .2s}
.tasks a:hover{border-color:var(--accent-line);text-decoration:none;transform:translateX(3px)}
.tasks .ic{color:var(--accent-2)}
.tasks .arr{margin-left:auto;color:var(--faint)}
.groups{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px}
.group{padding:22px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.group header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.group header .ico{width:40px;height:40px;border-radius:12px;background:var(--accent-soft);color:var(--accent-2);display:grid;place-items:center;border:1px solid var(--accent-line)}
.group h3{font-size:17px;font-weight:650}
.group ul{list-style:none;margin:0;padding:0}
.group li{margin:0;border-top:1px solid var(--line)}
.group li a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 2px;color:var(--text);font-size:14.8px}
.group li a:hover{color:var(--accent-ink);text-decoration:none}
.group li a .ic{width:15px;height:15px;color:var(--faint)}

/* ───── lightbox ───── */
.lb{position:fixed;inset:0;z-index:300;background:rgba(7,10,22,.86);backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;padding:28px}
.lb.on{display:flex}
.lb figure{max-width:min(1800px,96vw);max-height:92vh;display:flex;flex-direction:column;gap:10px;align-items:center}
.lb img{max-width:100%;max-height:calc(92vh - 40px);border-radius:12px;box-shadow:0 40px 90px -20px rgba(0,0,0,.8);background:#fff}
.lb figcaption{color:#C7CEE6;font-size:14px;text-align:center}
.lb button{position:absolute;top:18px;right:22px;width:44px;height:44px;border-radius:50%;border:0;background:rgba(255,255,255,.14);color:#fff;font-size:24px;cursor:pointer}
.lb button:hover{background:rgba(255,255,255,.26)}

/* ───── responsivo ───── */
@media (max-width:1180px){.main{grid-template-columns:minmax(0,1fr);padding:36px 32px 70px}.toc{display:none}}
@media (max-width:920px){
  .burger{display:grid}
  .shell{grid-template-columns:minmax(0,1fr)}
  .side{position:fixed;left:0;top:var(--head);bottom:0;width:min(86vw,330px);height:auto;z-index:80;transform:translateX(-102%);transition:transform .3s var(--ease),visibility 0s .3s;visibility:hidden}
  body.nav .side{transform:none;visibility:visible;transition:transform .3s var(--ease);box-shadow:var(--shadow-lg)}
  body.nav .scrim{display:block;position:fixed;inset:var(--head) 0 0 0;background:rgba(7,10,22,.5);z-index:70}
  .brand span,.brand .sep{display:none}
  .backsite{padding:0 11px}.backsite span{display:none}
  .top{padding:0 16px;gap:10px}
  .cta{display:none}
  .main{padding:28px 18px 60px}
  .start,.preface,.tasks{grid-template-columns:1fr}
  .hero{padding:48px 20px 56px}.home{padding:40px 20px 24px}
  .pair{grid-template-columns:1fr}
  .legend{grid-template-columns:1fr}
  .pager{grid-template-columns:1fr}
  footer.foot{padding:22px 20px}
  article h2 .anchor{display:none}
  .steps>li{padding-left:54px}
  .tbl{overflow-x:auto}.tbl td:first-child{white-space:normal}
}
@media print{
  .top,.side,.toc,.scrim,.pager,.helpbox,.search,.theme,.cta,.zoom,.backsite{display:none!important}
  .shell,.main{display:block;padding:0;max-width:none}
  body{background:#fff;font-size:12.5px}
  .fig,.callout,.steps>li,.purpose{break-inside:avoid}
  article h2{break-after:avoid}
  .fig .shot{cursor:default}
  footer.foot{border:0;padding:12px 0}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}