:root{
  --brand:#176b52;--brand-hover:#135845;--brand-soft:rgba(23,107,82,.10);--brand-on-dark:#5cb98f;
  --fg:#0f172a;--fg2:#475569;--muted:#64748b;
  --bg:#f6f8fb;--elevated:#ffffff;--subtle:#eef1f6;--ink:#1a1c21;
  --border:#e2e8f0;--border-strong:#cbd5e1;
  --warning:#f59e0b;--error:#ef4444;--success:#10b981;
  --radius-md:.75rem;--radius-lg:1rem;
  --shadow-sm:0 1px 2px 0 rgba(15,23,42,.05);
  --shadow-md:0 4px 6px -1px rgba(15,23,42,.08),0 2px 4px -2px rgba(15,23,42,.05);
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --display:'Manrope',var(--sans);
}
/* Витрина светлая, как лендинг provisium.ru (тёмная у лендинга — opt-in .dark, не авто). */
*{box-sizing:border-box}html,body{margin:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{background:var(--bg);color:var(--fg);font-family:var(--sans);font-size:1.0625rem;line-height:1.6}
a{color:var(--brand);text-decoration:none;transition:color .15s ease}a:hover{color:var(--brand-hover);text-decoration:underline}

/* Header — как у лендинга: без frosted, sticky, вордмарк слева */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:24px;height:64px;padding:0 24px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--border)}
.brand{display:inline-flex;align-items:center}
.brand-mark{display:inline-flex;align-items:center;gap:.34em;font-size:1.25rem;line-height:1}
.brand-mark img{height:1.55em;width:1.55em;object-fit:contain}
.wordmark{font-family:var(--display);font-weight:700;letter-spacing:-.02em;color:var(--fg)}
.lines{display:flex;gap:22px;margin-left:8px}
.lines a{color:var(--fg2);font-weight:500;font-size:1rem}.lines a:hover{color:var(--fg);text-decoration:none}
.lines a.active{color:var(--brand);font-weight:600}
.cta{margin-left:auto;background:var(--brand);color:#fff;padding:9px 16px;border-radius:var(--radius-md);font-weight:600;font-size:.95rem;box-shadow:var(--shadow-sm);transition:background .15s ease,transform .15s ease}
.cta:hover{background:var(--brand-hover);color:#fff;text-decoration:none;transform:translateY(-1px)}

.shell{display:flex;max-width:1120px;margin:0 auto;gap:40px;padding:0 24px}
.sidebar{width:250px;flex:none;padding:28px 0;position:sticky;top:64px;height:calc(100vh - 64px);overflow:auto}
.sidebar h3{font-family:var(--display);font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 10px;padding:0 12px}
.sidebar a{display:block;padding:7px 12px;border-radius:var(--radius-md);color:var(--fg2);font-size:.96rem;transition:background .15s ease,color .15s ease}
.sidebar a:hover{background:var(--subtle);color:var(--fg);text-decoration:none}
.sidebar a.active{background:var(--brand-soft);color:var(--brand);font-weight:600}

.content{flex:1;min-width:0;max-width:760px;padding:36px 0 80px;animation:fade .45s ease both}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.content h1{font-family:var(--display);font-weight:800;font-size:2.1rem;line-height:1.1;letter-spacing:-.03em;margin:.1em 0 .5em}
.content h2{font-family:var(--display);font-weight:800;font-size:1.5rem;line-height:1.2;letter-spacing:-.025em;margin:1.7em 0 .5em;padding-top:.7em;border-top:1px solid var(--border)}
.content h3{font-family:var(--display);font-weight:700;font-size:1.2rem;letter-spacing:-.015em;margin:1.4em 0 .4em}
.content p,.content li{color:var(--fg)}
.content strong{font-weight:700}
.content a{font-weight:500}
.content code{background:var(--subtle);color:var(--fg);padding:.12em .42em;border-radius:8px;font-size:.88em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.content pre{background:var(--ink);color:#e9ecf1;padding:16px 18px;border-radius:var(--radius-lg);overflow:auto;box-shadow:var(--shadow-md)}
.content pre code{background:none;color:inherit;padding:0}
.content ul,.content ol{padding-left:1.3em}.content li{margin:.3em 0}
.content ul li::marker{color:var(--brand)}
.table-wrap{overflow-x:auto;margin:1.2em 0}
table{border-collapse:collapse;width:100%;font-size:.95rem;background:var(--elevated);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}
th,td{border-bottom:1px solid var(--border);padding:10px 14px;text-align:left;vertical-align:top}
th{background:var(--subtle);font-family:var(--display);font-weight:700;font-size:.85rem;letter-spacing:.01em}
tr:last-child td{border-bottom:none}

.foot{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;max-width:1120px;margin:0 auto;padding:28px 24px;border-top:1px solid var(--border);color:var(--muted);font-size:.9rem}
.foot .wordmark{color:var(--muted)}.foot-note{color:var(--muted)}

/* Домашняя */
.shell--home .content{max-width:100%}
.home-lines{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:28px}
.card{border:1px solid var(--border);background:var(--elevated);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-sm);transition:box-shadow .18s ease,transform .18s ease}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.card h3{font-family:var(--display);margin:0 0 10px}.card ul{margin:0;padding-left:1.1em}

@media(max-width:820px){.sidebar{display:none}.lines{display:none}.home-lines{grid-template-columns:1fr}.content h1{font-size:1.8rem}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}