:root{
  --ink:#0b1526;--ink-2:#16233a;--muted:#5a6b84;--muted-2:#7c8ca3;
  --line:#e2e8f2;--line-2:#cfd9e8;--bg:#f5f7fb;--card:#fff;
  --brand:#2563eb;--brand-2:#7c3aed;--brand-3:#0891b2;
  --ok:#047857;--ok-bg:#ecfdf5;--warn:#b45309;--warn-bg:#fffbeb;--danger:#b91c1c;--danger-bg:#fef2f2;
  --dark:#070d1a;--dark-2:#0c1628;
  --code:#0b1220;--code-fg:#dbe6f8;
  --radius:14px;--radius-lg:18px;
  --shadow:0 18px 44px -26px rgba(15,23,42,.28);
  --max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{margin:0;background:var(--bg);color:var(--ink);font:15.5px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:#1d4ed8}
button{font:inherit}
code,kbd,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.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}

/* header */
header.site{position:sticky;top:0;z-index:60;background:rgba(7,13,26,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(148,163,184,.16)}
.nav{max-width:var(--max);margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16.5px;white-space:nowrap}
.brand:hover{color:#fff}
.brand .mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,#2563eb,#7c3aed);display:grid;place-items:center;font-size:16px;font-weight:900;box-shadow:0 8px 22px rgba(37,99,235,.4)}
.brand small{display:block;font-size:9px;font-weight:600;color:#94a3b8;letter-spacing:2.2px;line-height:1.1}
.nav-links{display:flex;gap:22px;margin-left:14px}
.nav-links a{color:#cbd5e1;font-size:14px}
.nav-links a:hover,.nav-links a[aria-current=page]{color:#fff}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid transparent;border-radius:9px;padding:9px 16px;font-size:14px;font-weight:650;line-height:1.2;cursor:pointer;transition:transform .15s,background .15s,border-color .15s;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 9px 22px -10px rgba(37,99,235,.85)}
.btn-primary:hover{background:#1d4ed8;color:#fff}
.btn-ghost{background:transparent;border-color:rgba(148,163,184,.38);color:#e2e8f0}
.btn-ghost:hover{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(203,213,225,.6)}
.nav-toggle{display:none;background:none;border:1px solid rgba(148,163,184,.35);border-radius:8px;color:#e2e8f0;padding:7px 10px;cursor:pointer}
.nav-login-mobile{display:none}

/* hero */
.hero{position:relative;color:#e8eefb;background:
 radial-gradient(820px 420px at 10% -12%,rgba(37,99,235,.36),transparent 62%),
 radial-gradient(700px 380px at 94% 0%,rgba(124,58,237,.28),transparent 60%),
 linear-gradient(180deg,#070d1a 0%,#091120 74%,#0a1424 100%);
 overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(148,163,184,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.055) 1px,transparent 1px);background-size:42px 42px;mask-image:radial-gradient(820px 460px at 72% 0%,#000 8%,transparent 74%);pointer-events:none}
.hero .wrap{position:relative;padding-top:48px;padding-bottom:40px}
.crumbs{display:flex;gap:8px;align-items:center;color:#8394ad;font-size:12.5px;margin-bottom:18px}
.crumbs a{color:#a9b7cc}
.crumbs a:hover{color:#fff}
.crumbs span{color:#56657c}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(96,165,250,.32);background:rgba(37,99,235,.12);color:#bfdbfe;border-radius:999px;padding:5px 12px;font-size:12px;font-weight:600;letter-spacing:.3px}
.hero .eyebrow i{width:6px;height:6px;border-radius:50%;background:#22d3ee;box-shadow:0 0 10px #22d3ee}
.hero h1{margin:16px 0 12px;font-size:clamp(30px,3.4vw,42px);line-height:1.16;letter-spacing:-.8px;color:#fff;font-weight:800}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#60a5fa,#a78bfa 58%,#22d3ee);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lede{margin:0;max-width:760px;color:#a9b7cc;font-size:16px;line-height:1.8}
.hero .lede b{color:#e8eefb;font-weight:650}
.hero-meta{display:flex;flex-wrap:wrap;gap:7px 18px;margin-top:18px;color:#8494ad;font-size:12.5px}
.hero-meta span{display:inline-flex;align-items:center;gap:6px}
.hero-meta i{width:5px;height:5px;border-radius:50%;background:#34d399;display:inline-block}

/* search */
.doc-search{margin-top:24px;max-width:660px;position:relative}
.doc-search input{width:100%;height:48px;border-radius:11px;border:1px solid rgba(148,163,184,.34);background:rgba(10,18,32,.86);color:#e8eefb;padding:0 118px 0 44px;font-size:14.5px;outline:none;transition:border-color .15s,box-shadow .15s}
.doc-search input::placeholder{color:#7f90a8}
.doc-search input:focus{border-color:#60a5fa;box-shadow:0 0 0 4px rgba(37,99,235,.16)}
.doc-search .loupe{position:absolute;left:15px;top:14px;width:18px;height:18px;color:#7f90a8;pointer-events:none}
.doc-search kbd{position:absolute;right:12px;top:12px;color:#8ea0b8;border:1px solid rgba(148,163,184,.3);background:rgba(148,163,184,.1);border-radius:6px;padding:3px 7px;font-size:11px}
.search-status{margin-top:9px;color:#8ea0b8;font-size:12.5px;min-height:18px}
.search-status b{color:#bfdbfe}

/* hero quick links */
.quick-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:24px}
.quick-card{display:block;background:rgba(11,20,36,.74);border:1px solid rgba(148,163,184,.22);border-radius:12px;padding:14px 15px;color:#dbe6f8;transition:border-color .15s,transform .15s,background .15s}
.quick-card:hover{border-color:rgba(96,165,250,.55);background:rgba(15,27,48,.9);transform:translateY(-1px);color:#fff}
.quick-card b{display:block;font-size:13.5px;color:#fff;margin-bottom:3px}
.quick-card span{display:block;font-size:11.5px;color:#8ea0b8;line-height:1.5}
.quick-card .q-ico{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;background:rgba(37,99,235,.18);color:#93c5fd;font-size:13px;font-weight:800;margin-bottom:8px}

/* layout */
.doc-wrap{max-width:var(--max);margin:0 auto;padding:30px 24px 88px;display:grid;grid-template-columns:266px minmax(0,1fr);gap:30px;align-items:start}
.doc-nav{position:sticky;top:84px;max-height:calc(100vh - 104px);overflow:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 12px 14px;box-shadow:0 12px 30px -26px rgba(15,23,42,.3);scrollbar-width:thin}
.doc-nav .nav-title{font-size:11px;font-weight:800;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted-2);padding:4px 10px 10px}
.doc-nav .nav-group{margin:14px 0 4px;padding:7px 10px 4px;font-size:10.5px;font-weight:750;letter-spacing:.9px;text-transform:uppercase;color:#98a7bb;border-top:1px solid var(--line)}
.doc-nav .nav-group:first-of-type{border-top:0;margin-top:0}
.doc-nav a{display:block;padding:7px 10px;border-radius:7px;color:#43536b;font-size:13.2px;line-height:1.45;border-left:2px solid transparent}
.doc-nav a:hover{background:#f3f6fc;color:var(--ink)}
.doc-nav a.active{background:#eef4ff;color:#1d4ed8;border-left-color:var(--brand);font-weight:650}
.doc-nav a.sub{padding-left:22px;font-size:12.6px;color:#63718a}
.doc-nav .nav-cta{margin:14px 2px 0;border:1px solid var(--line);border-radius:9px;padding:10px 11px;background:linear-gradient(180deg,#f8fbff,#f2f6fd);font-size:12px;color:#53617a;line-height:1.55}
.doc-nav .nav-cta b{display:block;color:var(--ink);font-size:12.5px;margin-bottom:2px}
.doc-main{min-width:0}
.mobile-toc{display:none;margin-bottom:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 14px}
.mobile-toc summary{cursor:pointer;padding:13px 0;font-weight:700;font-size:14px;list-style:none;display:flex;align-items:center;justify-content:space-between}
.mobile-toc summary::-webkit-details-marker{display:none}
.mobile-toc summary::after{content:"+";font-weight:700;color:var(--brand);font-size:18px}
.mobile-toc[open] summary::after{content:"−"}
.mobile-toc .mt-links{padding:2px 0 14px;border-top:1px solid var(--line)}
.mobile-toc a{display:block;padding:5px 0;font-size:13.5px;color:#43536b}

/* sections */
.doc-sec{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px 36px 34px;margin-bottom:20px;box-shadow:var(--shadow)}
.doc-sec.hidden{display:none}
.sec-head{display:flex;align-items:flex-start;gap:13px;margin-bottom:10px}
.sec-no{flex:none;width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;font-size:13px;font-weight:800;display:grid;place-items:center;box-shadow:0 7px 16px -8px rgba(37,99,235,.8);margin-top:3px}
.sec-head h2{margin:0;font-size:24px;line-height:1.3;letter-spacing:-.3px;color:var(--ink);font-weight:800}
.sec-head .sec-kicker{margin:2px 0 0;color:var(--muted-2);font-size:12.5px;letter-spacing:.2px}
.sec-intro{margin:6px 0 20px;color:#43536b;font-size:15px;line-height:1.8}
.sec-intro b{color:var(--ink);font-weight:650}
.doc-sec h3{margin:30px 0 9px;font-size:18px;line-height:1.4;color:var(--ink);font-weight:750}
.doc-sec h3:first-of-type{margin-top:12px}
.doc-sec h4{margin:20px 0 7px;font-size:15px;line-height:1.45;color:var(--ink-2);font-weight:750}
.doc-sec p{margin:9px 0;color:#3f4e65}
.doc-sec ul,.doc-sec ol{margin:9px 0;padding-left:22px;color:#3f4e65}
.doc-sec li{margin:5px 0}
.doc-sec li>strong,.doc-sec p>strong{color:var(--ink)}
.doc-sec a.inline{border-bottom:1px solid rgba(37,99,235,.3)}
.small{font-size:13px;color:var(--muted)}
.mt0{margin-top:0!important}
.mb0{margin-bottom:0!important}
.anchor{opacity:0;margin-left:7px;font-weight:600;color:#9aa9bd;font-size:.75em;vertical-align:middle;transition:opacity .15s}
h2:hover .anchor,h3:hover .anchor,.anchor:focus{opacity:1}

/* callouts */
.note,.warn,.danger,.okbox{position:relative;border-radius:10px;padding:12px 15px 12px 44px;margin:14px 0;font-size:14px;line-height:1.7;border:1px solid}
.note::before,.warn::before,.danger::before,.okbox::before{position:absolute;left:14px;top:12px;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:850;color:#fff}
.note{background:#eff6ff;border-color:#bfdbfe;color:#1e3a5f}
.note::before{content:"i";background:#2563eb;font-style:italic;font-family:Georgia,serif}
.warn{background:var(--warn-bg);border-color:#fde68a;color:#713f12}
.warn::before{content:"!";background:#d97706}
.danger{background:var(--danger-bg);border-color:#fecaca;color:#7f1d1d}
.danger::before{content:"!";background:#dc2626}
.okbox{background:var(--ok-bg);border-color:#a7f3d0;color:#064e3b}
.okbox::before{content:"✓";background:#059669}
.note b,.warn b,.danger b,.okbox b{font-weight:750}
.note code,.warn code,.danger code,.okbox code{background:rgba(255,255,255,.7);border-color:rgba(148,163,184,.3)}

/* steps */
.steps{counter-reset:step;display:grid;gap:10px;margin:16px 0}
.step{position:relative;padding:13px 15px 13px 52px;border:1px solid var(--line);border-radius:11px;background:#fbfcfe}
.step::before{counter-increment:step;content:counter(step);position:absolute;left:14px;top:13px;width:25px;height:25px;border-radius:50%;background:#e8f0ff;color:#1d4ed8;font-size:12px;font-weight:800;display:grid;place-items:center}
.step b{display:block;color:var(--ink);font-size:14.5px;margin-bottom:1px}
.step span{display:block;color:#53617a;font-size:13.5px;line-height:1.65}
.step a{font-weight:600}
.quick-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:16px 0}
.qstep{border:1px solid var(--line);border-radius:12px;background:linear-gradient(180deg,#fff,#f8fbff);padding:15px;position:relative}
.qstep .qn{width:24px;height:24px;border-radius:50%;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;font-size:11.5px;font-weight:800;display:grid;place-items:center;margin-bottom:8px}
.qstep b{display:block;font-size:14px;color:var(--ink);margin-bottom:3px}
.qstep p{margin:0;color:#53617a;font-size:12.8px;line-height:1.65}
.qstep a{display:inline-block;margin-top:7px;font-size:12.5px;font-weight:650}

/* cards */
.cards-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px 0}
.cards-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:14px 0}
.info-card{border:1px solid var(--line);border-radius:11px;padding:14px 15px;background:#fbfcfe}
.info-card h4{margin:0 0 5px;font-size:14.5px;color:var(--ink)}
.info-card p{margin:0;font-size:13.2px;line-height:1.65;color:#53617a}
.info-card ul{margin:6px 0 0;padding-left:18px;font-size:13px;color:#53617a}
.info-card .tagline{display:inline-block;margin-bottom:6px;padding:2px 7px;border-radius:5px;background:#eef4ff;color:#1d4ed8;font-size:10.5px;font-weight:700;letter-spacing:.4px}

/* tables */
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:10px;margin:12px 0;background:#fff}
table.doc{width:100%;border-collapse:collapse;font-size:13.4px;line-height:1.6;min-width:560px}
table.doc th{background:#f6f8fc;color:#52617a;text-align:left;font-weight:750;font-size:12px;letter-spacing:.3px;padding:10px 13px;border-bottom:1px solid var(--line);white-space:nowrap}
table.doc td{padding:10px 13px;border-bottom:1px solid #edf1f7;color:#3f4e65;vertical-align:top}
table.doc tr:last-child td{border-bottom:0}
table.doc tbody tr:nth-child(even){background:#fcfdff}
table.doc code{font-size:12.2px}
table.doc .nowrap{white-space:nowrap}
table.doc .center{text-align:center}
.req{color:#b91c1c;font-weight:750;font-size:11px;letter-spacing:.3px}
.opt{color:#7c8ca3;font-size:11px}

/* code */
pre{position:relative;background:var(--code);color:var(--code-fg);border:1px solid #1c2b45;border-radius:10px;padding:15px 16px;margin:12px 0;overflow:auto;font-size:12.7px;line-height:1.65;tab-size:2}
pre code{font-size:inherit;color:inherit;background:none;padding:0;border:0}
pre .copy{position:absolute;top:8px;right:8px;background:rgba(148,163,184,.14);border:1px solid rgba(148,163,184,.26);color:#cbd5e1;border-radius:6px;padding:4px 8px;font-size:10.5px;font-weight:650;cursor:pointer;font-family:inherit;opacity:0;transition:opacity .15s,background .15s}
pre:hover .copy,.copy:focus{opacity:1}
pre .copy:hover{background:rgba(148,163,184,.24);color:#fff}
pre .copy.done{background:rgba(16,185,129,.22);border-color:rgba(52,211,153,.4);color:#6ee7b7;opacity:1}
code{background:#f1f4f9;border:1px solid #e5eaf2;border-radius:4px;padding:1px 5px;font-size:12.5px;color:#1e3a5f;white-space:break-spaces;overflow-wrap:anywhere}
.code-label{display:flex;align-items:center;gap:7px;margin:16px 0 -4px;font-size:11px;font-weight:750;letter-spacing:.7px;text-transform:uppercase;color:var(--muted-2)}
.code-label::after{content:"";flex:1;height:1px;background:var(--line)}
kbd{display:inline-block;border:1px solid #cfd9e8;border-bottom-width:2px;background:#f8fafc;border-radius:4px;padding:0 5px;font-size:11.5px;color:#334155;line-height:1.6}

/* figure + pins */
.shot{position:relative;margin:18px 0 10px;border:1px solid #dbe3ef;border-radius:13px;overflow:visible;background:#f8fafc;box-shadow:0 16px 36px -26px rgba(15,23,42,.4)}
.shot img{width:100%;display:block;border-radius:12px}
.pin{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:25px;height:25px;border-radius:50%;background:#2563eb;color:#fff;font:800 11.5px/25px -apple-system,sans-serif;text-align:center;border:2px solid #fff;box-shadow:0 0 0 4px rgba(37,99,235,.22),0 4px 12px rgba(15,23,42,.35);cursor:help;z-index:2}
.pin::after{content:attr(data-tip);position:absolute;left:50%;bottom:calc(100% + 9px);transform:translateX(-50%);background:#0b1526;color:#e8eefb;border:1px solid rgba(148,163,184,.3);border-radius:7px;padding:6px 9px;font:500 11.5px/1.45 -apple-system,sans-serif;width:max-content;max-width:min(260px,72vw);white-space:normal;box-shadow:0 8px 22px rgba(0,0,0,.35);opacity:0;pointer-events:none;transition:opacity .15s;z-index:5}
.pin:hover::after,.pin:focus::after{opacity:1}
.shot-legend{display:flex;flex-wrap:wrap;gap:6px 18px;margin:9px 0 18px;color:#53617a;font-size:12.2px;line-height:1.6}
.shot-legend span{display:inline-flex;align-items:center;gap:6px}
.shot-legend i{flex:none;width:17px;height:17px;border-radius:50%;background:#2563eb;color:#fff;font:800 9.5px/17px -apple-system,sans-serif;text-align:center;font-style:normal}
.figcap{font-size:12px;color:var(--muted-2);margin:7px 0 0;text-align:center}

/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:14px 0}
.price-card{border:1px solid var(--line);border-radius:11px;padding:14px;background:#fff}
.price-card.hot{border-color:#93c5fd;box-shadow:0 0 0 3px #eff6ff}
.price-card h4{margin:0 0 2px;font-size:14px}
.price-card .p{font-size:22px;font-weight:800;color:var(--ink);letter-spacing:-.5px;line-height:1.35}
.price-card .p small{font-size:11px;color:var(--muted-2);font-weight:500;letter-spacing:0}
.price-card ul{padding:0;margin:8px 0 0;list-style:none;font-size:12.2px;color:#53617a;line-height:1.65}
.price-card li{padding-left:14px;position:relative}
.price-card li::before{content:"";position:absolute;left:0;top:8px;width:5px;height:5px;border-radius:50%;background:#93c5fd}
.price-card.hot li::before{background:var(--brand)}

/* misc */
.pill-row{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}
.pill{display:inline-flex;align-items:center;gap:5px;border:1px solid var(--line);background:#f8fafc;color:#52617a;border-radius:999px;padding:3px 9px;font-size:11.5px;font-weight:600}
.pill.blue{background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8}
.pill.green{background:#ecfdf5;border-color:#a7f3d0;color:#047857}
.pill.amber{background:#fffbeb;border-color:#fde68a;color:#b45309}
.pill.red{background:#fef2f2;border-color:#fecaca;color:#b91c1c}
.kv{display:grid;grid-template-columns:150px minmax(0,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:12px 0;font-size:13.2px}
.kv div{background:#fff;padding:8px 12px}
.kv div:nth-child(odd){background:#f8fafc;color:#52617a;font-weight:650}
.split{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:12px 0}
.checklist{list-style:none;padding:0;margin:10px 0}
.checklist li{position:relative;padding-left:24px;margin:7px 0;color:#3f4e65}
.checklist li::before{content:"✓";position:absolute;left:0;top:0;width:17px;height:17px;border-radius:50%;background:#dcfce7;color:#047857;font-size:10px;font-weight:800;display:grid;place-items:center;margin-top:3px}
.checklist li.warn-item::before{content:"!";background:#fef3c7;color:#b45309}
.checklist li.no::before{content:"×";background:#fee2e2;color:#b91c1c}

/* API method badges */
.endpoint{border:1px solid var(--line);border-radius:12px;padding:17px 18px;margin:16px 0;background:#fff}
.endpoint.hidden{display:none}
.ep-head{display:flex;align-items:center;flex-wrap:wrap;gap:9px;margin-bottom:5px}
.method{display:inline-flex;align-items:center;justify-content:center;min-width:52px;border-radius:5px;padding:3px 7px;font-size:10.5px;font-weight:850;letter-spacing:.6px;color:#fff}
.method.get{background:#047857}
.method.post{background:#1d4ed8}
.method.put{background:#b45309}
.method.delete{background:#b91c1c}
.method.patch{background:#7c3aed}
.ep-path{font-size:13.5px;font-weight:700;color:#0b1526;background:#f4f7fc;border:1px solid #e4eaf3;border-radius:6px;padding:3px 8px;word-break:break-all}
.ep-name{font-size:13px;color:#63718a;margin-left:auto}
.ep-desc{margin:6px 0 10px;color:#43536b;font-size:13.8px;line-height:1.7}
.endpoint h4{font-size:13.5px;margin:16px 0 6px;color:#16233a}
.endpoint .table-wrap{margin:8px 0}
.endpoint pre{margin:8px 0;font-size:12.2px}
.endpoint p{font-size:13.6px}
.endpoint ul{font-size:13.4px}

/* API hero and filter */
.api-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.api-badge{display:inline-flex;align-items:center;gap:7px;border:1px solid rgba(148,163,184,.28);background:rgba(11,20,36,.7);border-radius:8px;padding:6px 11px;font-size:12px;color:#cbd5e1}
.api-badge b{color:#fff;font-weight:750}
.filter-row{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 14px}
.filter-btn{border:1px solid var(--line);background:#fff;color:#52617a;border-radius:999px;padding:5px 12px;font-size:12px;font-weight:650;cursor:pointer}
.filter-btn.active{background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8}
.filter-btn:hover{border-color:#93c5fd}

/* footer */
footer.site{background:var(--dark);color:#8ea0b8;padding:34px 0;border-top:1px solid rgba(148,163,184,.14)}
footer.site .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
footer.site .f-brand{color:#fff;font-weight:750;font-size:14px}
footer.site .f-links{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:12.5px}
footer.site a{color:#a9b7cc}
footer.site a:hover{color:#fff}
footer.site .f-note{font-size:11.5px;color:#6f8099;width:100%}
#toTop{position:fixed;right:22px;bottom:22px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;color:#52617a;box-shadow:0 10px 26px -12px rgba(15,23,42,.4);display:none;place-items:center;cursor:pointer;z-index:40;font-size:16px}
#toTop.show{display:grid}
#toTop:hover{color:var(--brand);border-color:#bfdbfe}
.no-results{display:none;background:#fff;border:1px dashed var(--line-2);border-radius:14px;padding:44px 20px;text-align:center;color:var(--muted)}
.no-results.show{display:block}
.no-results b{display:block;color:var(--ink);font-size:16px;margin-bottom:4px}

/* responsive */
@media(max-width:1080px){
  .doc-wrap{grid-template-columns:230px minmax(0,1fr);gap:20px}
  .doc-sec{padding:28px 25px}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .price-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:860px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-links.open{display:flex;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;margin:0;background:#081020;border-bottom:1px solid rgba(148,163,184,.2);padding:8px 24px 16px}
  .nav-links.open a{padding:11px 0;border-bottom:1px solid rgba(148,163,184,.1)}
  .nav-links.open .nav-login-mobile{display:block}
  .doc-wrap{display:block;padding:20px 16px 70px}
  .doc-nav{display:none}
  .mobile-toc{display:block}
  .doc-sec{padding:24px 20px;margin-bottom:14px;border-radius:14px}
  .quick-steps{grid-template-columns:1fr}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cards-3{grid-template-columns:1fr}
  .sec-head h2{font-size:21px}
  .hero .wrap{padding-top:36px;padding-bottom:32px}
  .hero h1{font-size:30px}
  .hero .lede{font-size:14.5px}
  .split{grid-template-columns:1fr}
  .pin{width:21px;height:21px;font-size:10px;line-height:21px;border-width:1.5px}
  .pin::after{display:none}
}
@media(max-width:560px){
  .nav{padding:0 14px;height:58px}
  .nav-actions .btn{padding:7px 11px;font-size:12.5px}
  .nav-actions .btn-ghost{display:none}
  .nav-links.open{top:58px}
  .brand small{display:none}
  .wrap{padding:0 16px}
  .hero h1{font-size:26px;letter-spacing:-.4px}
  .hero .eyebrow{font-size:10.5px}
  .quick-grid{grid-template-columns:1fr}
  .doc-sec{padding:21px 16px}
  .cards-2{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .sec-head h2{font-size:19.5px}
  .sec-no{width:26px;height:26px;font-size:11.5px}
  .doc-search input{height:46px;padding-right:54px;font-size:13.5px}
  .doc-search kbd{display:none}
  .kv{grid-template-columns:112px minmax(0,1fr)}
  pre{font-size:11.8px;padding:13px}
  footer.site .wrap{display:block}
  footer.site .f-links{margin-top:10px}
  #toTop{right:14px;bottom:14px}
}
@media print{
  header.site,.doc-nav,.mobile-toc,.doc-search,.quick-grid,.filter-row,#toTop,.anchor,pre .copy{display:none!important}
  body{background:#fff}
  .doc-wrap{display:block;max-width:none;padding:0}
  .doc-sec{box-shadow:none;break-inside:avoid-page;page-break-inside:avoid;border-color:#ddd}
  .hero{background:#fff;color:#000;border-bottom:1px solid #ddd}
  .hero h1,.hero .lede,.hero-meta,.crumbs{color:#000}
  .hero h1 em{color:#000;-webkit-text-fill-color:#000}
}