:root {
  --bg: #f5f6fb;
  --surface: #ffffff;
  --surface-soft: #faf9ff;
  --text: #1a1833;
  --muted: #5a5c7a;
  --border: #e3e2ef;
  --accent: #f15a22;
  --accent-soft: #ffe9df;
  --brand: #5a4fbe;
  --brand-soft: #ecebfa;
  --brand-deep: #332c7a;
  --accent-2: #5a4fbe;
  --accent-3: #332c7a;
  --ok: #15803d;
  --warn: #b45309;
  --danger: #dc2626;
  --code-bg: #1a1833;
  --code-text: #e8e6ff;
  --code-border: #2c2757;
  --shadow: 0 14px 40px rgba(51, 44, 122, 0.10);
  --shadow-soft: 0 4px 14px rgba(51, 44, 122, 0.06);
  --radius: 18px;
  --sidebar-width: 310px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

/* Accessibility */
.sr-only{position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;}
.skip-link{position:absolute; left:-9999px; top:8px; z-index:100; background:var(--brand); color:#fff; padding:10px 16px; border-radius:8px; font-weight:700;}
.skip-link:focus{left:16px;}
:focus-visible{outline:3px solid var(--brand); outline-offset:2px; border-radius:4px;}
body {
  margin:0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:
    radial-gradient(1100px 500px at 12% -10%, rgba(90,79,190,0.10), transparent 60%),
    radial-gradient(900px 400px at 100% 0%, rgba(241,90,34,0.08), transparent 60%),
    linear-gradient(180deg, #f9f8ff 0%, var(--bg) 320px);
  color:var(--text);
  -webkit-font-smoothing: antialiased;
}
a{ color:var(--accent-2); text-decoration:none; font-weight:600; }
a:hover{text-decoration:underline;}

/* Topbar */
.topbar{position:sticky; top:0; z-index:40; backdrop-filter: saturate(180%) blur(12px); background:rgba(255,255,255,.85); border-bottom:1px solid var(--border);}
.topbar-inner{max-width:1460px; margin:0 auto; padding:14px 24px; display:flex; align-items:center; justify-content:space-between; gap:16px;}
.brand-link{text-decoration:none; color:inherit;}
.brand{display:flex; align-items:center; gap:14px;}
.brand img{width:52px; height:52px; object-fit:contain; filter: drop-shadow(0 6px 14px rgba(90,79,190,0.18));}
.brand-title strong{display:block; font-size:17px; letter-spacing:-0.01em;}
.brand-title span{display:block; color:var(--muted); font-size:12.5px; margin-top:2px;}
.topbar-actions{display:flex; align-items:center; gap:12px;}
.search{position:relative; min-width:320px;}
.search-wrap{position:relative;}
.search input{
  width:100%;
  border:1px solid var(--border);
  border-radius:14px;
  padding:11px 40px 11px 42px;
  background:#fff;
  color:var(--text);
  font-size:14px;
  transition: border-color .15s, box-shadow .15s, background .15s;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%235a5c7a' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><circle cx='11' cy='11' r='7'/><path d='m21 21-4.3-4.3'/></svg>");
  background-repeat:no-repeat;
  background-position:14px center;
}
.search input::-webkit-search-decoration,
.search input::-webkit-search-cancel-button,
.search input::-webkit-search-results-button,
.search input::-webkit-search-results-decoration{ -webkit-appearance:none; }
.search input:focus{outline:none; border-color:var(--brand); box-shadow:0 0 0 3px rgba(90,79,190,.15);}

/* Search results dropdown */
.search-panel{
  position:absolute;
  top:calc(100% + 8px);
  left:0;
  right:0;
  max-height:min(480px, 70vh);
  overflow-y:auto;
  background:#fff;
  border:1px solid var(--border);
  border-radius:16px;
  box-shadow:0 20px 50px rgba(51,44,122,.18);
  z-index:60;
  padding:6px;
}
.search-panel[hidden]{ display:none; }
.search-item{
  display:block;
  padding:12px 14px;
  border-radius:12px;
  color:inherit;
  text-decoration:none !important;
  transition: background .12s;
  border:1px solid transparent;
}
.search-item + .search-item{ margin-top:2px; }
.search-item:hover,
.search-item.active,
.search-item:focus-visible{
  background: linear-gradient(90deg, var(--brand-soft), #fff 80%);
  border-color: #e2def5;
}
.search-item-section{
  font-size:11px;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--brand);
  margin-bottom:3px;
}
.search-item-title{
  font-size:14.5px;
  font-weight:700;
  color:var(--text);
  margin-bottom:3px;
  letter-spacing:-0.005em;
}
.search-item-desc{
  font-size:13px;
  color:var(--muted);
  line-height:1.45;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.search-item mark{
  background: linear-gradient(180deg, transparent 55%, rgba(241,90,34,.28) 55%);
  color:inherit;
  padding:0 1px;
  border-radius:2px;
}
.search-empty{
  padding:18px 14px;
  color:var(--muted);
  font-size:13.5px;
  text-align:center;
}

/* Language switcher */
.lang-switch{display:inline-flex; align-items:center; background:#fff; border:1px solid var(--border); border-radius:999px; padding:4px; box-shadow:var(--shadow-soft);}
.lang-switch a{padding:6px 14px; border-radius:999px; font-size:12px; font-weight:700; color:var(--muted); letter-spacing:.04em; text-transform:uppercase; transition: background .15s, color .15s;}
.lang-switch a:hover{text-decoration:none; color:var(--brand);}
.lang-switch a.active{background: linear-gradient(135deg, var(--brand), var(--accent)); color:#fff; box-shadow: 0 4px 10px rgba(90,79,190,.25);}

/* Layout */
.layout{max-width:1460px; margin:0 auto; padding:24px; display:grid; grid-template-columns:var(--sidebar-width) 1fr; gap:24px;}
.sidebar{position:sticky; top:86px; align-self:start; max-height:calc(100vh - 110px); overflow:auto; padding:18px; background:var(--surface); border:1px solid var(--border); border-radius:22px; box-shadow:var(--shadow);}
.sidebar-brand{display:flex; align-items:center; gap:12px; padding:10px 8px 16px; margin-bottom:12px; border-bottom:1px solid var(--border);}
.sidebar-brand img{width:38px; height:38px; object-fit:contain;}
.sidebar-brand strong{display:block; font-size:14.5px; letter-spacing:-0.01em;}
.sidebar-brand span{display:block; color:var(--muted); font-size:12px;}
.nav-group{margin-bottom:18px;}
.nav-group-title{display:block; font-size:11px; text-transform:uppercase; letter-spacing:.1em; font-weight:800; color:var(--muted); margin:0 0 8px; padding-left:12px;}
.nav-link{display:block; color:var(--muted); padding:9px 12px; border-radius:12px; margin:3px 0; font-size:14px; font-weight:500; transition: background .15s, color .15s, transform .15s;}
.nav-link:hover{background:var(--brand-soft); color:var(--brand-deep); text-decoration:none;}
.nav-link.active{background: linear-gradient(90deg, var(--brand-soft), var(--accent-soft)); color:var(--brand-deep); font-weight:700; box-shadow: inset 3px 0 0 var(--accent);}

/* Content cards */
.content{min-width:0;}
.hero,.section-card,.endpoint,.callout,.feature-card{background:var(--surface); border:1px solid var(--border); border-radius:22px; box-shadow:var(--shadow);}
.hero{padding:32px; margin-bottom:22px; position:relative; overflow:hidden;}
.premium-hero{background:
  linear-gradient(135deg, rgba(90,79,190,0.04) 0%, rgba(241,90,34,0.03) 100%),
  var(--surface);}
.premium-hero::before{content:""; position:absolute; right:-80px; top:-100px; width:300px; height:300px; background:radial-gradient(circle, rgba(90,79,190,.18) 0%, rgba(90,79,190,0) 70%);}
.premium-hero::after{content:""; position:absolute; right:160px; bottom:-110px; width:260px; height:260px; background:radial-gradient(circle, rgba(241,90,34,.16) 0%, rgba(241,90,34,0) 70%);}
.breadcrumb{position:relative; z-index:1; color:var(--muted); font-size:13px; margin-bottom:12px; font-weight:600; letter-spacing:.01em;}
.breadcrumb span.sep{margin:0 6px; opacity:.5;}
.hero h1{position:relative; z-index:1; margin:0 0 12px; font-size:42px; line-height:1.05; max-width:900px; letter-spacing:-0.02em; background: linear-gradient(135deg, var(--brand-deep), var(--brand) 50%, var(--accent)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;}
.hero p{position:relative; z-index:1; margin:0; font-size:17px; line-height:1.65; max-width:920px; color:var(--muted);}

.section-card{padding:26px; margin-bottom:18px;}
.section-card h2{margin:0 0 12px; font-size:26px; letter-spacing:-0.01em;}
.section-card h3{margin:22px 0 10px; font-size:19px; letter-spacing:-0.01em;}
.section-card h4{margin:16px 0 8px; font-size:15px; color:var(--brand-deep); text-transform:uppercase; letter-spacing:.06em;}
.section-card p,.section-card li{color:var(--muted); line-height:1.72; font-size:15px;}
.section-card code:not(pre code){background:var(--brand-soft); color:var(--brand-deep); padding:2px 7px; border-radius:6px; font-size:.9em; font-weight:600;}

/* Grids */
.hero-grid,.grid-2,.grid-3,.grid-4{display:grid; gap:16px;}
.hero-grid{grid-template-columns:1.1fr .9fr; align-items:center;}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}

/* KPIs / feature cards */
.feature-card,.kpi{padding:20px; border-radius:18px; border:1px solid var(--border); background:linear-gradient(180deg,#fff,#fafaff); transition: transform .15s, box-shadow .15s, border-color .15s;}
.feature-card:hover,.kpi:hover{transform:translateY(-2px); box-shadow:var(--shadow); border-color:#d8d6ec;}
.feature-card strong,.kpi strong{display:block; margin-bottom:8px; font-size:15px; color:var(--text);}
.feature-card span,.kpi span{color:var(--muted); font-size:14px; line-height:1.6;}
.kpi-number{font-size:30px; font-weight:800; color:var(--brand); margin-bottom:6px; letter-spacing:-0.02em;}

/* Tags */
.tag-row{display:flex; flex-wrap:wrap; gap:8px; margin-top:14px;}
.tag{display:inline-flex; align-items:center; padding:6px 12px; border-radius:999px; background:var(--brand-soft); color:var(--brand-deep); font-size:11.5px; font-weight:700; letter-spacing:.04em; text-transform:uppercase;}
.tag.orange{background:var(--accent-soft); color:var(--accent);}
.tag.new{background: linear-gradient(135deg, var(--brand), var(--accent)); color:#fff; box-shadow: 0 3px 8px rgba(90,79,190,.25);}

/* Endpoints */
.endpoint{padding:22px; margin-bottom:16px; transition: box-shadow .15s, border-color .15s;}
.endpoint:hover{border-color:#cfc9e8;}
.endpoint-head{display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin-bottom:10px;}
.method{display:inline-flex; align-items:center; justify-content:center; min-width:66px; border-radius:8px; color:#fff; font-weight:800; font-size:11px; letter-spacing:.08em; padding:6px 10px;}
.method.get{background:#5a4fbe;}
.method.post{background:#2563eb;}
.method.patch{background:#16a34a;}
.method.delete{background:#dc2626;}
.path{font-family: ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace; font-size:15px; font-weight:700; word-break:break-word; color:var(--text);}
.desc{color:var(--muted); margin:0 0 12px; font-size:14.5px;}
.endpoint-meta{display:flex; gap:8px; flex-wrap:wrap; margin-bottom:12px;}
.pill{display:inline-flex; align-items:center; padding:5px 10px; border:1px solid var(--border); border-radius:999px; background:#fff; color:var(--muted); font-size:11.5px; font-weight:600;}
.pill.new{background: linear-gradient(135deg, var(--brand), var(--accent)); color:#fff; border-color:transparent;}

/* Code */
pre{margin:0; padding:18px; border-radius:14px; background:var(--code-bg); color:var(--code-text); overflow:auto; line-height:1.6; border:1px solid var(--code-border); font-size:13.5px;}
code{font-family: ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;}
pre code{color:inherit; background:transparent; padding:0;}

.note{font-size:12.5px; color:var(--muted); margin-top:10px; padding-left:12px; border-left:3px solid var(--brand-soft);}

/* Callouts */
.callout{padding:18px 20px; margin:14px 0 0; border-left:4px solid transparent; border-radius:14px; background:linear-gradient(180deg,#fff,#fafaff);}
.callout.info{border-left-color:var(--brand); background:linear-gradient(90deg, var(--brand-soft) 0%, #fff 60%);}
.callout.ok{border-left-color:var(--ok); background:linear-gradient(90deg, #e6f6ec 0%, #fff 60%);}
.callout.warn{border-left-color:var(--warn); background:linear-gradient(90deg, #fef3e2 0%, #fff 60%);}
.callout.danger{border-left-color:var(--danger); background:linear-gradient(90deg, #fde7e7 0%, #fff 60%);}
.callout h4{margin:0 0 6px; font-size:14px; color:var(--text); text-transform:none; letter-spacing:0;}
.callout p,.callout li{margin:0; color:var(--muted);}

/* Tables */
.table-wrap{overflow:auto; border:1px solid var(--border); border-radius:16px; box-shadow: var(--shadow-soft);}
table{width:100%; border-collapse:collapse; background:#fff;}
th,td{padding:13px 16px; border-bottom:1px solid var(--border); text-align:left; font-size:14px; vertical-align:top;}
th{background: linear-gradient(180deg, var(--brand-soft), #fff); color:var(--brand-deep); font-weight:700; font-size:12.5px; text-transform:uppercase; letter-spacing:.05em;}
tr:last-child td{border-bottom:none;}
tbody tr:hover{background:#fafaff;}
td code{background:var(--brand-soft); color:var(--brand-deep); padding:2px 7px; border-radius:6px; font-size:12.5px; font-weight:600;}

/* Param list (new) */
.param-list{display:grid; gap:10px; margin:12px 0 0;}
.param-item{display:grid; grid-template-columns: 200px 1fr; gap:14px; padding:14px 16px; border:1px solid var(--border); border-radius:12px; background:#fff;}
.param-name{font-family: ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace; font-size:13px; font-weight:700; color:var(--brand-deep); word-break:break-all;}
.param-name .badge{display:inline-block; margin-left:6px; padding:1px 7px; border-radius:4px; font-size:10px; text-transform:uppercase; font-weight:700; letter-spacing:.06em; vertical-align:middle;}
.param-name .badge.opt{background:#eef2fb; color:#5a6b83;}
.param-name .badge.req{background:#fde7e7; color:#dc2626;}
.param-name .badge.new{background:linear-gradient(135deg, var(--brand), var(--accent)); color:#fff;}
.param-desc{color:var(--muted); font-size:13.5px; line-height:1.6;}
.param-desc code{background:var(--brand-soft); color:var(--brand-deep); padding:1px 6px; border-radius:5px; font-size:12.5px;}

/* Example rows */
.example-row{display:grid; grid-template-columns:160px 1fr; gap:14px; align-items:center; padding:12px 16px; border:1px solid var(--border); border-radius:12px; background:#fff; margin-bottom:10px;}
.example-row strong{color:var(--brand-deep); font-size:13.5px;}
.example-row code{display:block; font-family: ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace; font-size:13px; color:var(--text); background:var(--surface-soft); padding:10px 12px; border:1px solid var(--border); border-radius:8px; word-break:break-all;}

/* Quick links */
.quick-links{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px;}
.quick-link-card{display:block; border:1px solid var(--border); border-radius:16px; padding:18px; background:#fff; color:inherit; text-decoration:none; transition: transform .15s, box-shadow .15s, border-color .15s;}
.quick-link-card:hover{box-shadow:var(--shadow); text-decoration:none; transform:translateY(-2px); border-color:#cfc9e8;}
.quick-link-card strong{display:block; margin-bottom:6px; color:var(--text);}
.quick-link-card span{color:var(--muted); font-size:13.5px; line-height:1.55;}

.list-tight li{margin-bottom:8px;}
.list-check{list-style:none; padding:0; margin:8px 0 0;}
.list-check li{position:relative; padding:6px 0 6px 28px; color:var(--muted); line-height:1.65;}
.list-check li::before{content:""; position:absolute; left:0; top:10px; width:16px; height:16px; border-radius:50%; background: linear-gradient(135deg, var(--brand), var(--accent));}
.list-check li::after{content:""; position:absolute; left:5px; top:13px; width:5px; height:9px; border:solid #fff; border-width:0 2px 2px 0; transform:rotate(45deg);}
.list-cross{list-style:none; padding:0; margin:8px 0 0;}
.list-cross li{position:relative; padding:6px 0 6px 28px; color:var(--muted); line-height:1.65;}
.list-cross li::before{content:"✕"; position:absolute; left:0; top:5px; width:18px; height:18px; border-radius:50%; background:#fde7e7; color:var(--danger); font-size:10px; font-weight:800; display:flex; align-items:center; justify-content:center;}

.footer{text-align:center; color:var(--muted); font-size:13px; padding:26px 0 8px;}

@media (max-width:1080px){
  .layout{grid-template-columns:1fr;}
  .sidebar{position:static; max-height:none;}
  .hero-grid,.grid-2,.grid-3,.grid-4,.quick-links{grid-template-columns:1fr;}
  .search{min-width:0; width:100%;}
  .topbar-inner{flex-direction:column; align-items:stretch;}
  .topbar-actions{justify-content:space-between;}
  .param-item,.example-row{grid-template-columns:1fr;}
}
@media (max-width:720px){
  .layout,.topbar-inner{padding-left:14px; padding-right:14px;}
  .hero h1{font-size:30px;}
  .section-card h2{font-size:22px;}
}