:root{
  --brand:#1d4ed8;--accent:#1d4ed8;--hero:#0f2742;--ink:#0f172a;--ink-2:#334155;--muted:#64748b;--line:#e5e9f0;--bg:#f6f8fb;--card:#fff;
  --accent-soft:#eef3ff;--brand-soft:#e8efff;--warn-soft:#fffbeb;--warn:#b45309;--danger-soft:#fef2f2;--danger:#b91c1c;--code-bg:#0f172a;
  --side:290px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:20px}
body{margin:0;font:15.5px/1.7 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink-2);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
h1,h2,h3,h4{color:var(--ink);letter-spacing:-.015em;line-height:1.25}
code,kbd,pre{font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-variant-ligatures:none}
code{background:#eef2f7;color:#0f172a;border-radius:6px;padding:1px 6px;font-size:.86em}
kbd{background:#fff;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:1px 7px;font-size:.82em;color:var(--ink)}
svg.i{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ── sidebar ── */
.side{position:fixed;inset:0 auto 0 0;width:var(--side);background:var(--hero);color:#cbd5e1;display:flex;flex-direction:column;z-index:20}
.side-top{padding:22px 20px 14px}
.product{display:flex;align-items:center;gap:11px;color:#fff;text-decoration:none}
.product .mark{display:grid;place-items:center;width:40px;height:40px;border-radius:11px;background:var(--brand);flex:none}
.product b{display:block;font-size:15px;line-height:1.25}
.product small{display:block;color:#94a3b8;font-size:12px;font-weight:500}
.search{position:relative;margin-top:16px}
.search .i{position:absolute;left:11px;top:50%;transform:translateY(-50%);width:15px;height:15px;color:#94a3b8}
.search input{width:100%;padding:9px 12px 9px 34px;border-radius:9px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.07);color:#fff;font:inherit;font-size:13.5px}
.search input::placeholder{color:#94a3b8}
.search input:focus{outline:none;border-color:rgba(255,255,255,.35);background:rgba(255,255,255,.1)}
nav.toc{flex:1;overflow-y:auto;padding:4px 12px 24px;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.2) transparent}
.toc .grp{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#64748b;padding:16px 10px 6px}
.toc a{display:flex;align-items:center;gap:10px;padding:7px 10px;border-radius:8px;color:#cbd5e1;text-decoration:none;font-size:13.5px;line-height:1.35}
.toc a:hover{background:rgba(255,255,255,.07);color:#fff}
.toc a.on{background:rgba(255,255,255,.12);color:#fff}
.toc a .n{display:grid;place-items:center;min-width:22px;height:22px;border-radius:6px;background:rgba(255,255,255,.08);font-size:11px;font-weight:700;color:#94a3b8}
.toc a.on .n{background:var(--brand);color:#fff}
.toc .none{padding:10px;color:#94a3b8;font-size:13px}
.side-foot{padding:12px 20px;border-top:1px solid rgba(255,255,255,.08);font-size:12px;color:#64748b}

/* ── content ── */
.main{margin-left:var(--side);min-width:0}
.hero{background:linear-gradient(135deg,var(--hero),#1e3a8a);color:#fff;padding:56px 56px 64px}
.hero .eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;background:rgba(255,255,255,.12);padding:4px 11px;border-radius:999px}
.hero h1{color:#fff;font-size:clamp(28px,4vw,40px);margin:14px 0 10px}
.hero p{margin:0;max-width:680px;color:#cbd5e1;font-size:17px}
.hero .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.hero .chips span{font-size:13px;font-weight:600;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);padding:5px 12px;border-radius:999px}
.content{max-width:900px;padding:0 56px 80px;margin-top:-30px}
section.doc{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:34px 40px;margin-bottom:22px;box-shadow:0 1px 2px rgba(15,23,42,.04),0 4px 18px rgba(15,23,42,.04)}
section.doc>h2{display:flex;align-items:center;gap:12px;font-size:24px;margin:0 0 6px}
section.doc>h2 .n{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--accent-soft);color:var(--accent);font-size:15px;font-weight:800;flex:none}
section.doc>.lead{margin:0 0 22px;color:var(--muted);font-size:16px}
section.doc h3{font-size:18px;margin:28px 0 8px}
section.doc h4{font-size:15px;margin:20px 0 6px}
section.doc p{margin:0 0 14px}
section.doc ul,section.doc ol{margin:0 0 16px;padding-left:22px}
section.doc li{margin:4px 0}
.anchor{opacity:0;margin-left:auto;color:var(--muted);text-decoration:none;font-size:15px}
section.doc>h2:hover .anchor{opacity:1}

/* steps */
.steps{list-style:none;padding:0!important;margin:8px 0 18px!important;counter-reset:s}
.steps>li{position:relative;padding:0 0 22px 50px;margin:0!important;counter-increment:s}
.steps>li::before{content:counter(s);position:absolute;left:0;top:-2px;width:32px;height:32px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;font-size:14px;box-shadow:0 0 0 4px var(--brand-soft)}
.steps>li::after{content:"";position:absolute;left:15px;top:34px;bottom:4px;width:2px;background:var(--line)}
.steps>li:last-child{padding-bottom:4px}
.steps>li:last-child::after{display:none}
.steps>li>b:first-child{display:block;color:var(--ink);font-size:16px;margin-bottom:2px}

/* callouts */
.note{display:flex;gap:12px;padding:14px 16px;border-radius:12px;margin:16px 0;font-size:14.5px;border:1px solid}
.note .i{margin-top:3px}
.note p:last-child{margin:0}
.note.tip{background:#ecfdf3;border-color:#bbf7d0;color:#14532d}
.note.info{background:var(--accent-soft);border-color:#c7d7fe;color:#1e3a8a}
.note.warn{background:var(--warn-soft);border-color:#fde68a;color:#78350f}
.note.danger{background:var(--danger-soft);border-color:#fecaca;color:#7f1d1d}
.note b{color:inherit}

/* tables */
.table{overflow-x:auto;margin:10px 0 18px;border:1px solid var(--line);border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;background:#f8fafc;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em;font-weight:700;padding:10px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:10px 14px;border-bottom:1px solid #f1f5f9;vertical-align:top}
tr:last-child td{border-bottom:0}
td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}
td.wrap{white-space:normal}

/* code */
.code{position:relative;margin:10px 0 18px}
.code pre{margin:0;background:var(--code-bg);color:#e2e8f0;border-radius:12px;padding:16px 18px;font-size:13px;line-height:1.65;overflow-x:auto}
.code .copy{position:absolute;top:8px;right:8px;background:rgba(255,255,255,.1);color:#e2e8f0;border:0;border-radius:7px;padding:5px 10px;font:600 12px Inter,sans-serif;cursor:pointer}
.code .copy:hover{background:rgba(255,255,255,.2)}
.code .label{position:absolute;top:-10px;left:14px;background:var(--accent);color:#fff;font:700 11px Inter,sans-serif;padding:2px 8px;border-radius:6px;letter-spacing:.03em}

/* misc components */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:14px 0 20px}
.flow div{background:#f8fafc;border:1px solid var(--line);border-radius:12px;padding:14px;font-size:13.5px;position:relative}
.flow b{display:block;color:var(--ink);margin-bottom:2px}
.flow div:not(:last-child)::after{content:"→";position:absolute;right:-14px;top:50%;transform:translateY(-50%);color:var(--muted);font-weight:700}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:12px 0 18px}
.cards div{border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.cards b{display:block;color:var(--ink);margin-bottom:2px}
.cards p{margin:0;font-size:14px}
.pill{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:700;white-space:nowrap}
.p-new{background:#fef3c7;color:#92400e}.p-contacted{background:#dbeafe;color:#1e40af}.p-offer{background:#ede9fe;color:#5b21b6}
.p-booked{background:#cffafe;color:#155e75}.p-done{background:#dcfce7;color:#166534}.p-lost{background:#f1f5f9;color:#64748b}
.check{list-style:none;padding:0!important}
.check li{position:relative;padding-left:30px}
.check li::before{content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:5px;border:2px solid #cbd5e1}
details.faq{border:1px solid var(--line);border-radius:12px;margin:0 0 10px;background:#fff}
details.faq summary{cursor:pointer;padding:14px 18px;font-weight:600;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:12px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--muted);font-size:20px;line-height:1}
details.faq[open] summary::after{content:"–"}
details.faq>div{padding:0 18px 14px}
details.faq>div p:last-child{margin:0}
.toplink{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;background:var(--hero);color:#fff;display:grid;place-items:center;text-decoration:none;box-shadow:0 8px 20px rgba(15,23,42,.25);opacity:0;pointer-events:none;transition:.2s}
.toplink.show{opacity:1;pointer-events:auto}
.mbar{display:none}
.hl{background:#fef08a;border-radius:3px}

/* ── responsive ── */
@media (max-width:1020px){
  .side{transform:translateX(-100%);transition:transform .25s;box-shadow:0 0 40px rgba(0,0,0,.3)}
  body.nav-open .side{transform:none}
  .main{margin-left:0}
  .mbar{display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:15;background:var(--hero);color:#fff;padding:10px 16px}
  .mbar button{background:rgba(255,255,255,.12);border:0;color:#fff;border-radius:8px;padding:7px 10px;cursor:pointer;display:flex}
  .mbar b{font-size:14px}
  .hero{padding:36px 20px 52px}
  .content{padding:0 14px 60px}
  section.doc{padding:24px 20px}
  .flow,.cards{grid-template-columns:minmax(0,1fr)}
  .flow div:not(:last-child)::after{content:"↓";right:50%;top:auto;bottom:-17px;transform:translateX(50%)}
  body.nav-open::after{content:"";position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:19}
}
@media print{
  .side,.mbar,.toplink,.code .copy,.anchor{display:none!important}
  .main{margin:0}.hero{padding:24px;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .content{max-width:none;padding:0;margin:0}
  section.doc{box-shadow:none;break-inside:auto;border:0;border-top:1px solid var(--line);border-radius:0;padding:20px 0}
  details.faq{break-inside:avoid}details.faq>div{display:block}
}

/* niche guides */
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:16px 0 4px}
.facts div{background:#f8fafc;border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.facts small{display:block;color:var(--muted);font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.05em}
.facts b{color:var(--ink);font-size:15px}
@media (max-width:760px){.facts{grid-template-columns:1fr 1fr}}
.opts{display:flex;flex-wrap:wrap;gap:6px}
.opts span{background:#eef2f7;border-radius:999px;padding:2px 10px;font-size:12.5px;color:var(--ink-2);white-space:nowrap}
.tag{display:inline-block;padding:1px 8px;border-radius:6px;font-size:11.5px;font-weight:700;background:#fee2e2;color:#991b1b;margin-left:6px;vertical-align:1px}
.tag.opt{background:#eef2f7;color:var(--muted)}
.niche-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px;margin:14px 0}
.niche-list a{display:flex;flex-direction:column;gap:2px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;text-decoration:none;background:#fff;transition:.15s}
.niche-list a:hover{border-color:var(--accent);box-shadow:0 6px 16px -10px rgba(15,23,42,.3)}
.niche-list b{color:var(--ink)}
.niche-list small{color:var(--muted);font-size:12.5px}
.msg{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:12px;padding:12px 14px;white-space:pre-line;font-size:14px;color:#14532d;margin:8px 0 16px}
.back{display:inline-flex;align-items:center;gap:6px;color:#cbd5e1;text-decoration:none;font-size:13px;margin-top:12px}
.back:hover{color:#fff}