:root{
  --accent:#FB7701;--accent-hover:#FF8E2B;--accent-text:#C85E00;--accent-soft:#FFF1E5;
  --bg:#FFFFFF;--surface:#F7F8FA;--card:#FFFFFF;--border:#E7E9EE;--border-strong:#D5D8E0;
  --ink:#0E0E0E;--body:#4F5563;--muted:#8A8F9C;--danger:#E23744;
  --shadow:0 10px 30px rgba(14,18,30,.07);--shadow-lg:0 24px 60px rgba(14,18,30,.10);
  --maxw:1280px;color-scheme:light;
}
[data-theme="dark"]{
  --accent-text:#FF9A3D;--accent-soft:#2A1A0C;
  --bg:#0E0E0E;--surface:#141414;--card:#161616;--border:#262626;--border-strong:#333;
  --ink:#FFFFFF;--body:#B0B5BF;--muted:#7B808A;--danger:#FF5A66;
  --shadow:0 10px 30px rgba(0,0,0,.35);--shadow-lg:0 24px 60px rgba(0,0,0,.45);color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:110px}
body{background:var(--bg);color:var(--ink);font-family:Inter,system-ui,sans-serif;line-height:1.6;overflow-x:hidden;transition:background .3s,color .3s}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
@media (max-width:520px){.wrap{padding:0 16px}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:999px;font-weight:600;font-size:15px;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s;white-space:nowrap}
.btn-primary{background:var(--accent);color:#111;box-shadow:0 10px 26px rgba(251,119,1,.3)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px)}
.btn-ghost{background:var(--card);border:1px solid var(--border-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--accent);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn svg{width:16px;height:16px}

/* risk + header (matches homepage) */
.risk{background:var(--surface);border-bottom:1px solid var(--border);color:var(--body);font-size:12px;text-align:center;padding:8px 16px}
header.site{position:sticky;top:0;z-index:50;padding:12px 0}
header.site .bar{display:flex;align-items:center;justify-content:space-between;gap:16px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:999px;padding:8px 10px 8px 22px;box-shadow:var(--shadow)}
.logo img{height:36px;width:auto}
nav.main{display:flex;gap:4px}
nav.main .item{position:relative}
nav.main .item>a{display:block;white-space:nowrap;padding:10px 12px;border-radius:999px;font-size:15px;font-weight:500}
nav.main .item>a:hover,nav.main .item>a.on{background:var(--surface)}
nav.main .drop{position:absolute;top:calc(100% + 10px);left:0;min-width:250px;background:var(--card);border:1px solid var(--border);border-radius:18px;padding:8px;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(6px);transition:.2s}
nav.main .item:hover .drop,nav.main .item:focus-within .drop{opacity:1;visibility:visible;transform:none}
.drop a{display:block;padding:9px 14px;border-radius:12px;font-size:14px;color:var(--body)}
.drop a:hover{background:var(--accent-soft);color:var(--ink)}
.actions{display:flex;align-items:center;gap:8px}
.toggle{display:flex;gap:2px;padding:3px;border:1px solid var(--border);border-radius:999px;background:var(--surface)}
.toggle button{width:32px;height:30px;border-radius:999px;display:grid;place-items:center;color:var(--muted)}
.toggle button[aria-pressed="true"]{background:var(--card);color:var(--accent);box-shadow:0 1px 3px rgba(0,0,0,.12)}
.burger{display:none;width:42px;height:42px;border-radius:999px;border:1px solid var(--border);place-items:center}
@media (max-width:1240px){nav.main .item>a{padding:10px 8px;font-size:14px}}
@media (max-width:1100px){nav.main,.actions .login{display:none}.burger{display:grid}}
@media (max-width:520px){.actions .open{display:none}.logo img{height:30px}}
.drawer{position:fixed;inset:0;z-index:80;background:rgba(0,0,0,.35);opacity:0;visibility:hidden;transition:.25s}
.drawer.open{opacity:1;visibility:visible}
.drawer .panel{position:absolute;top:0;right:0;bottom:0;width:min(360px,88vw);background:var(--bg);padding:20px;overflow:auto;transform:translateX(100%);transition:transform .3s}
.drawer.open .panel{transform:none}
.drawer details{border-bottom:1px solid var(--border)}
.drawer summary{list-style:none;padding:16px 4px;font-weight:600;display:flex;justify-content:space-between}
.drawer summary::after{content:"+";color:var(--accent)}
.drawer details[open] summary::after{content:"–"}
.drawer details a{display:block;padding:8px 12px;color:var(--body)}

/* reading progress */
.progress{position:fixed;top:0;left:0;height:3px;width:100%;transform-origin:0 50%;transform:scaleX(0);background:linear-gradient(90deg,#FFB066,var(--accent));z-index:90}

/* hero */
.lhero{position:relative;padding:40px 0 56px;overflow:hidden}
.lhero::before{content:"";position:absolute;inset:-40% -10% auto auto;width:720px;height:720px;border-radius:50%;background:radial-gradient(circle,rgba(251,119,1,.16),transparent 62%);pointer-events:none}
.crumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);margin-bottom:28px}
.crumbs a:hover{color:var(--accent-text)}
.crumbs span{opacity:.6}
.lhero .grid{display:grid;grid-template-columns:1fr 280px;gap:40px;align-items:center;position:relative}
.eyebrow{font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--accent-text);text-transform:uppercase}
.lhero h1{font-size:clamp(34px,5vw,60px);line-height:1.05;letter-spacing:-.03em;font-weight:800;margin:12px 0 16px}
.lhero p.lead{color:var(--body);font-size:clamp(16px,1.6vw,19px);max-width:640px}
.meta{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 28px}
.meta span{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border:1px solid var(--border);border-radius:999px;font-size:13px;color:var(--body);background:var(--card)}
.meta svg{width:15px;height:15px;color:var(--accent)}
.hbtns{display:flex;flex-wrap:wrap;gap:10px}
.hart{width:260px;height:260px;justify-self:end;animation:float 6s ease-in-out infinite;filter:drop-shadow(0 30px 30px rgba(193,84,0,.18))}
@keyframes float{50%{transform:translateY(-14px)}}
@media (max-width:860px){.lhero .grid{grid-template-columns:1fr}.hart{position:absolute;top:-10px;right:-20px;width:130px;height:130px;opacity:.95}.lhero h1{padding-right:90px}}
@media (max-width:520px){.lhero h1{padding-right:70px}.hart{width:110px;height:110px;right:-14px}}

/* draft notice */
.draft{display:flex;gap:12px;align-items:flex-start;background:var(--accent-soft);border:1px dashed var(--accent);border-radius:16px;padding:14px 18px;font-size:14px;color:var(--ink);margin-bottom:28px}
.draft b{color:var(--accent-text)}

/* layout */
.doc{display:grid;grid-template-columns:270px minmax(0,1fr);gap:56px;padding-bottom:40px}
.toc{position:sticky;top:104px;align-self:start;max-height:calc(100vh - 124px);overflow:auto;padding-right:6px}
.toc h4{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.toc ol{list-style:none;counter-reset:t;border-left:2px solid var(--border)}
.toc li{counter-increment:t}
.toc a{display:flex;gap:10px;padding:7px 12px;margin-left:-2px;border-left:2px solid transparent;font-size:14px;color:var(--body);transition:.2s}
.toc a::before{content:counter(t,decimal-leading-zero);font-variant-numeric:tabular-nums;color:var(--muted);font-size:12px;padding-top:2px}
.toc a:hover{color:var(--ink)}
.toc a.on{border-left-color:var(--accent);color:var(--ink);font-weight:600;background:linear-gradient(90deg,var(--accent-soft),transparent)}
.toc a.on::before{color:var(--accent)}
.tocm{display:none}
@media (max-width:960px){
  html{scroll-padding-top:160px}
  .doc{grid-template-columns:1fr;gap:0}
  .toc{display:none}
  .tocm{display:block;position:sticky;top:86px;z-index:40;margin-bottom:24px}
  .tocm details{background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow)}
  .tocm summary{list-style:none;padding:13px 16px;font-weight:600;font-size:14px;display:flex;justify-content:space-between;gap:10px}
  .tocm summary span{color:var(--accent-text);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .tocm ol{list-style:none;padding:0 8px 10px;max-height:50vh;overflow:auto}
  .tocm a{display:block;padding:9px 10px;border-radius:10px;font-size:14px;color:var(--body)}
  .tocm a:hover{background:var(--accent-soft)}
}

/* article */
article{counter-reset:s;max-width:760px}
article section{counter-increment:s;padding:8px 0 30px;border-bottom:1px solid var(--border);margin-bottom:30px}
article section:last-of-type{border-bottom:0}
article h2{display:flex;align-items:center;gap:14px;font-size:clamp(21px,2.2vw,26px);letter-spacing:-.015em;line-height:1.25;margin-bottom:14px}
article h2::before{content:counter(s);flex:0 0 36px;height:36px;border-radius:12px;display:grid;place-items:center;font-size:15px;font-weight:700;color:#fff;background:linear-gradient(145deg,#FFB066,var(--accent));box-shadow:0 8px 18px rgba(251,119,1,.28)}
article h2 a.anchor{opacity:0;color:var(--muted);font-size:18px;transition:.2s}
article h2:hover a.anchor{opacity:1}
article p,article li{color:var(--body);font-size:16px}
article p+p,article p+ul,article ul+p,article p+ol,article ol+p,article .callout+p,article p+.callout,article p+.tbl,article ul+.callout{margin-top:14px}
article b{color:var(--ink)}
article a{color:var(--accent-text);text-decoration:underline;text-underline-offset:3px}
article ul,article ol{padding-inline-start:4px;display:grid;gap:10px;margin-top:10px}
article ul{list-style:none}
article ul li{position:relative;padding-inline-start:26px}
article ul li::before{content:"";position:absolute;left:4px;top:.62em;width:8px;height:8px;border-radius:3px;background:var(--accent);transform:rotate(45deg)}
article ol{list-style:none;counter-reset:o}
article ol li{counter-increment:o;position:relative;padding-inline-start:40px}
article ol li::before{content:counter(o);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--accent-text);border:1.5px solid var(--accent);background:var(--accent-soft)}
.callout{border-radius:16px;padding:16px 18px;font-size:15px;color:var(--ink);border:1px solid var(--border);background:var(--surface);border-left:4px solid var(--accent)}
.callout.danger{border-left-color:var(--danger);background:color-mix(in srgb,var(--danger) 7%,var(--bg))}
.callout.warn{border-left-color:var(--accent);background:var(--accent-soft)}
.tbl{overflow-x:auto;border:1px solid var(--border);border-radius:16px}
table{border-collapse:collapse;width:100%;font-size:14.5px;min-width:520px}
th,td{padding:13px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--border);color:var(--body)}
th{background:var(--surface);color:var(--ink);font-size:13px;letter-spacing:.04em;text-transform:uppercase}
tr:last-child td{border-bottom:0}
.ph{background:var(--accent-soft);color:var(--accent-text);border-bottom:1.5px dashed var(--accent);border-radius:4px;padding:0 4px;font-weight:600;white-space:normal}

/* help + related */
.help{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:26px 28px;border:1px solid var(--border);border-radius:24px;background:radial-gradient(120% 140% at 100% 0%,var(--accent-soft),var(--card) 60%);margin:10px 0 64px}
.help h3{font-size:20px;margin-bottom:4px}.help p{color:var(--body);font-size:15px}
.help img{width:72px;height:72px}
.help .l{display:flex;gap:16px;align-items:center}
.related h2{font-size:clamp(24px,3vw,34px);letter-spacing:-.02em;margin-bottom:22px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.dcard{position:relative;display:flex;flex-direction:column;gap:8px;padding:22px;border:1px solid var(--border);border-radius:22px;background:var(--card);transition:transform .35s cubic-bezier(.2,.8,.2,1),border-color .3s,box-shadow .3s;overflow:hidden}
.dcard:hover{transform:translateY(-6px);border-color:var(--accent);box-shadow:var(--shadow-lg)}
.dcard img{width:76px;height:76px;margin:-6px 0 6px -6px;transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.dcard:hover img{transform:rotate(-8deg) scale(1.1)}
.dcard h3{font-size:17px;line-height:1.3}
.dcard p{color:var(--body);font-size:14px}
.dcard .go{position:absolute;top:18px;right:18px;width:34px;height:34px;border-radius:50%;border:1px solid var(--border);display:grid;place-items:center;color:var(--accent-text);transition:.3s}
.dcard:hover .go{background:var(--accent);border-color:var(--accent);color:#111;transform:rotate(45deg)}

/* hub */
.hubinfo{display:grid;grid-template-columns:1.2fr 1fr;gap:16px;margin:8px 0 56px}
.hubinfo .box{padding:24px 26px;border:1px solid var(--border);border-radius:22px;background:var(--card)}
.hubinfo h3{font-size:17px;margin-bottom:10px}
.hubinfo p{color:var(--body);font-size:14.5px}
.hubinfo dl{display:grid;gap:8px;font-size:14.5px}
.hubinfo dl div{display:grid;grid-template-columns:130px 1fr;gap:10px}
.hubinfo dt{color:var(--muted)}.hubinfo dd{color:var(--ink)}
@media (max-width:860px){.hubinfo{grid-template-columns:1fr}.hubinfo dl div{grid-template-columns:1fr;gap:0}}

/* footer */
footer{border-top:1px solid var(--border);margin-top:80px;padding:56px 0 110px;background:var(--surface)}
.fgrid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:28px}
.fgrid h4{font-size:14px;margin-bottom:12px}
.fgrid a{display:block;color:var(--body);font-size:14px;padding:4px 0}
.fgrid a:hover,.fgrid a.on{color:var(--accent-text)}
.fgrid button{color:var(--body);font-size:14px;padding:4px 0}
.fgrid button:hover{color:var(--accent-text)}
.flegal{margin-top:40px;padding-top:24px;border-top:1px solid var(--border);color:var(--muted);font-size:12.5px;display:grid;gap:10px}
.flegal b{color:var(--body)}
@media (max-width:960px){.fgrid{grid-template-columns:1fr 1fr}.fgrid .brand{grid-column:span 2}}

/* floating */
.fab{position:fixed;bottom:22px;inset-inline-end:22px;z-index:70;display:flex;flex-direction:column;gap:10px}
.fab a{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;box-shadow:0 12px 28px rgba(0,0,0,.18);transition:transform .2s}
.fab a:hover{transform:scale(1.07)}
.fab .chat{background:var(--accent);color:#111}.fab .wa{background:#25D366;color:#fff}
.fab svg{width:25px;height:25px}
.totop{position:fixed;bottom:22px;inset-inline-start:22px;z-index:70;width:46px;height:46px;border-radius:50%;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow);display:grid;place-items:center;opacity:0;visibility:hidden;transform:translateY(10px);transition:.3s}
.totop.show{opacity:1;visibility:visible;transform:none}
.totop:hover{border-color:var(--accent);color:var(--accent)}
@media (max-width:760px){.fab{bottom:84px}.totop{bottom:84px}}
.mbar{display:none}
@media (max-width:760px){
  .mbar{display:flex;position:fixed;left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:70;gap:8px;padding:8px;border-radius:999px;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(14px);border:1px solid var(--border);box-shadow:var(--shadow-lg)}
  .mbar a{flex:1;text-align:center;padding:12px 6px;border-radius:999px;font-weight:600;font-size:14px}
  .mbar .l{border:1px solid var(--border-strong)}.mbar .o{background:var(--accent);color:#111}
}

/* reveal */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}.hart{animation:none}html{scroll-behavior:auto}}

/* print / PDF */
@media print{
  .risk,header.site,.progress,.toc,.tocm,.fab,.mbar,.totop,.help,.related,footer,.hart,.hbtns,.drawer,.ck{display:none!important}
  body{background:#fff;color:#000}
  .doc{display:block}.lhero{padding:0 0 20px}.lhero::before{display:none}
  article{max-width:none}
  article section{break-inside:avoid-page}
  .rv{opacity:1;transform:none}
}

.hubcards{grid-template-columns:repeat(3,1fr)}
@media (max-width:960px){.hubcards{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.hubcards{grid-template-columns:1fr}}