@font-face{font-family:"Inter";src:url("/fonts/inter.woff2") format("woff2");font-weight:100 900;font-style:normal;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("/fonts/jbmono.woff2") format("woff2");font-weight:100 800;font-style:normal;font-display:swap}

:root{
  --navy:#06101F;--navy2:#0B1730;--bg:#050B18;--panel:#0C1629;--panel2:#13203A;--ink:#F5F8FC;--ink2:#C3CDDD;--muted:#8D9AB2;--line:#1C2A45;--line2:#2A3B5E;
  --teal:#1E90FF;--teal-ink:#8CCBFF;--teal-soft:#0E2240;--gold:#E8C674;--gold-ink:#F3D995;--good:#34C474;--good-soft:#0F2318;--bad:#F2596A;--bad-soft:#2A1217;--amber:#E9A23B;--amber-ink:#F2C46F;--amber-soft:#2A2112;
  --font:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;--serif:"Inter",ui-sans-serif,system-ui,sans-serif;--mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --r:16px;--shadow:0 1px 0 rgba(255,255,255,.06) inset,0 10px 30px rgba(0,0,0,.35);color-scheme:dark}
:root[data-theme=light]{--bg:#F3F6FB;--panel:#FFFFFF;--panel2:#E9EEF7;--ink:#0A1428;--ink2:#2C3A55;--muted:#5A6782;--line:#D8E0EE;--line2:#C3CEE2;--teal:#0B6FD8;--teal-ink:#0A5BB5;--teal-soft:#E3EFFD;--gold:#9A7414;--gold-ink:#7C5C0C;--good:#127A43;--good-soft:#E2F3E9;--bad:#B3202F;--bad-soft:#F8E4E6;--amber-ink:#7C5508;--amber-soft:#FBF0DC;--shadow:0 1px 2px rgba(10,20,40,.06),0 8px 24px rgba(10,20,40,.08);color-scheme:light}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.65 var(--font);-webkit-font-smoothing:antialiased}
a{color:var(--teal-ink);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--teal);outline-offset:2px;border-radius:6px}
img,svg{max-width:100%}
h1,h2,h3{line-height:1.15;letter-spacing:-.01em;color:var(--ink);font-family:var(--serif);font-weight:700}
h1{font-size:clamp(32px,5vw,48px);font-weight:800;margin:.2em 0 .35em}
h2{font-size:clamp(23px,3vw,29px);font-weight:800;margin:1.7em 0 .5em}
h3{font-size:20px;font-weight:750;margin:1.4em 0 .4em}
p{margin:0 0 1em}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:var(--panel);padding:10px 14px;z-index:99}.skip:focus{left:12px;top:12px}
/* header */
.top{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:18px;height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:19px;letter-spacing:-.02em;flex:none}
.brand svg{width:32px;height:32px;flex:none}.brand .tld{color:var(--muted);font-weight:600}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{color:var(--ink2);text-decoration:none;font-weight:650;font-size:15.5px;padding:8px 13px;border-radius:10px}
.nav a:hover,.nav a[aria-current=page]{background:var(--panel2);color:var(--ink)}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:42px;height:42px;padding:0 12px;border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer;font:600 15px var(--font)}
.icon-btn:hover{border-color:var(--line2)}
.icon-btn svg{width:19px;height:19px}
.searchbtn{color:var(--muted);min-width:180px;justify-content:flex-start}
.searchbtn kbd{margin-left:auto;font:600 12px var(--font);border:1px solid var(--line);border-radius:6px;padding:1px 6px;color:var(--muted)}
@media(max-width:880px){.nav{order:3;width:100%;margin:0;overflow-x:auto;scrollbar-width:none;padding-bottom:8px}.nav::-webkit-scrollbar{display:none}.top .wrap{flex-wrap:wrap;height:auto;padding-top:10px;gap:10px}.tools-r{margin-left:auto}.searchbtn{min-width:0}.searchbtn span,.searchbtn kbd{display:none}}
.tools-r{display:flex;gap:8px;align-items:center}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:12px;border:1px solid var(--line2);background:var(--panel);color:var(--ink);font:700 16px var(--font);text-decoration:none;cursor:pointer}
.btn:hover{border-color:var(--ink2)}
.btn.primary{background:var(--teal);border-color:var(--teal);color:#fff}
.btn.primary:hover{filter:brightness(1.05)}
/* home hero */
.hero{position:relative;padding:64px 0 40px;text-align:center;z-index:5}
.eyebrow{display:inline-block;font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--teal-ink)}
.hero h1{font-size:clamp(40px,7vw,68px);margin:.15em 0 .2em}
.hero .lede{max-width:640px;margin:0 auto 26px;color:var(--ink2);font-size:clamp(17px,2vw,20px)}
.hero-art{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;opacity:.4;z-index:-1}
.bigsearch{position:relative;max-width:680px;margin:0 auto;text-align:left}
.bigsearch input{width:100%;height:64px;border-radius:18px;border:1.5px solid var(--line2);background:var(--panel);color:var(--ink);font:500 19px var(--font);padding:0 22px 0 56px;box-shadow:var(--shadow)}
.bigsearch input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 4px color-mix(in srgb,var(--teal) 25%,transparent)}
.bigsearch>svg{position:absolute;left:20px;top:21px;width:22px;height:22px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:16px}
.chips a,.chips button{border:1px solid var(--line);background:var(--panel);color:var(--ink2);border-radius:999px;padding:7px 14px;font:600 14.5px var(--font);text-decoration:none;cursor:pointer}
.chips a:hover,.chips button:hover{border-color:var(--teal);color:var(--ink)}
.results{position:absolute;left:0;right:0;top:calc(100% + 8px);background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:0 12px 40px rgba(11,18,32,.14);z-index:30;overflow:hidden;max-height:min(420px,60vh);overflow-y:auto}
.results[hidden]{display:none}
.res{display:flex;gap:12px;align-items:flex-start;padding:12px 16px;text-decoration:none;color:var(--ink);border-top:1px solid var(--line)}
.res:first-child{border-top:0}
.res:hover,.res.on{background:var(--panel2)}
.res b{display:block;font-weight:750}.res small{color:var(--muted);font-size:14px;line-height:1.45;display:block}
.tag{flex:none;font-size:11.5px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;border-radius:6px;padding:3px 7px;margin-top:2px}
.tag.t-tool{background:var(--teal-soft);color:var(--teal-ink)}.tag.t-guide{background:var(--panel2);color:var(--ink2)}.tag.t-term{background:var(--amber-soft);color:var(--amber-ink)}.tag.t-safety{background:var(--bad-soft);color:var(--bad)}
.noresult{padding:16px;color:var(--muted)}
/* sections */
.section{padding:44px 0}
.section h2{margin-top:0}
.sub{color:var(--muted);font-size:15px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:980px){.grid4{grid-template-columns:repeat(2,1fr)}.grid3{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.grid4,.grid3,.grid2{grid-template-columns:1fr}}
.card{display:block;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:22px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow)}
a.card:hover{border-color:var(--teal)}
.card h3{margin:12px 0 6px;font-size:19px}.card p{margin:0;color:var(--muted);font-size:15.5px;line-height:1.55}
.card .ic{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--teal-soft);color:var(--teal-ink)}
.card .ic svg{width:24px;height:24px}
.card .ic.red{background:var(--bad-soft);color:var(--bad)}.card .ic.amber{background:var(--amber-soft);color:var(--amber-ink)}.card .ic.navy{background:var(--panel2);color:var(--ink)}
.feature{border:1px solid var(--line);display:grid;grid-template-columns:1.1fr 1fr;gap:28px;align-items:center;background:var(--navy);color:#E8EDF5;border-radius:22px;padding:36px;overflow:hidden}
.feature h2{color:#fff;margin:.2em 0 .4em}.feature p{color:#C3CCDA}.feature .eyebrow{color:var(--teal)}
.feature .btn.primary{margin-top:6px}
@media(max-width:820px){.feature{grid-template-columns:1fr;padding:26px}}
.steps3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;counter-reset:s}
.steps3 button{text-align:left;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px;color:var(--ink);font:inherit;cursor:pointer}
.steps3 button[aria-pressed=true]{border-color:var(--teal);box-shadow:0 0 0 3px color-mix(in srgb,var(--teal) 22%,transparent)}
.steps3 .n{font-weight:800;color:var(--teal-ink);font-size:14px;letter-spacing:.08em}
.steps3 b{display:block;font-size:19px;margin:2px 0}
.steps3 span{color:var(--muted);font-size:15px}
.stepdetail{margin-top:14px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;color:var(--ink2)}
@media(max-width:700px){.steps3{grid-template-columns:1fr}}
.trust{display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:center;color:var(--muted);font-weight:600;font-size:15px}
.trust span{display:inline-flex;align-items:center;gap:8px}.trust svg{width:18px;height:18px;color:var(--teal-ink)}
/* article */
.crumbs{font-size:14.5px;color:var(--muted);margin:26px 0 0}.crumbs a{color:var(--muted)}.crumbs span{margin:0 6px}
.art{display:grid;grid-template-columns:minmax(0,740px) 240px;gap:56px;justify-content:space-between;padding-bottom:40px}
.art.solo{grid-template-columns:minmax(0,820px);justify-content:start}
@media(max-width:1060px){.art{grid-template-columns:minmax(0,740px)}.toc{display:none}}
.art .lede{font-size:19px;color:var(--ink2)}
.meta{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;font-size:14px;color:var(--muted);margin:6px 0 24px}
.pill{display:inline-block;border-radius:999px;padding:3px 10px;font-weight:700;font-size:13px;background:var(--panel2);color:var(--ink2)}
.pill.beg{background:var(--good-soft);color:var(--good)}.pill.int{background:var(--amber-soft);color:var(--amber-ink)}.pill.adv{background:var(--teal-soft);color:var(--teal-ink)}
.answer{background:var(--teal-soft);border-left:4px solid var(--teal);border-radius:0 var(--r) var(--r) 0;padding:18px 22px;margin:0 0 28px}
.answer .lab{font-size:12.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--teal-ink);margin-bottom:6px}
.answer p{margin:0;font-size:18px;color:var(--ink)}
.callout{border-radius:var(--r);padding:16px 20px;margin:22px 0;border:1px solid var(--line);background:var(--panel)}
.callout.warn{background:var(--bad-soft);border-color:color-mix(in srgb,var(--bad) 35%,transparent)}
.callout.note{background:var(--amber-soft);border-color:color-mix(in srgb,var(--amber) 45%,transparent)}
.callout .lab{font-weight:800;margin-bottom:4px}
.callout.warn .lab{color:var(--bad)}.callout.note .lab{color:var(--amber-ink)}
.callout p:last-child,.callout ul:last-child{margin-bottom:0}
.content ul,.content ol{padding-left:1.3em}.content li{margin:.35em 0}
.content table{width:100%;border-collapse:collapse;font-size:15.5px;margin:12px 0 22px}
.content th,.content td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.content th{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.tablewrap{overflow-x:auto}
.diagram{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin:8px 0 28px}
.diagram figcaption{font-size:14px;color:var(--muted);margin-top:8px}
.diagram svg{display:block;width:100%;height:auto}
details.tech{border:1px solid var(--line);border-radius:var(--r);background:var(--panel);padding:0 18px;margin:20px 0}
details.tech summary{cursor:pointer;font-weight:750;padding:14px 0;list-style:none;display:flex;align-items:center;gap:10px}
details.tech summary::before{content:"+";display:inline-flex;width:22px;height:22px;border-radius:6px;background:var(--panel2);align-items:center;justify-content:center;font-weight:800}
details.tech[open] summary::before{content:"−"}
details.tech>div{padding-bottom:12px}
.faq h3{font-size:18px}
.sources{font-size:15px;color:var(--ink2)}.sources li{margin:.3em 0}
.next{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:12px 0 0}
@media(max-width:700px){.next{grid-template-columns:1fr}}
.next a{display:block;border:1px solid var(--line);background:var(--panel);border-radius:12px;padding:14px 16px;text-decoration:none;color:var(--ink)}
.next a:hover{border-color:var(--teal)}.next small{display:block;color:var(--muted);font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.06em}.next b{font-weight:750}
.toc{position:sticky;top:90px;align-self:start;font-size:14.5px;margin-top:150px}
.toc b{display:block;font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.toc a{display:block;color:var(--ink2);text-decoration:none;padding:5px 0 5px 12px;border-left:2px solid var(--line)}
.toc a:hover{color:var(--ink);border-left-color:var(--teal)}
.reviewed{font-size:14px;color:var(--muted);border-top:1px solid var(--line);margin-top:30px;padding-top:14px}
kbd{font-family:var(--mono)}
code,.mono{font-family:var(--mono);font-size:.92em;background:var(--panel2);padding:1px 6px;border-radius:5px;overflow-wrap:anywhere}
/* tools */
.tool{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:24px;margin:8px 0 28px}
.tool .cols{display:grid;grid-template-columns:1fr 1fr;gap:26px}
@media(max-width:760px){.tool .cols{grid-template-columns:1fr}.tool{padding:18px}}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field>span{font-weight:700;font-size:15px}
.field small{color:var(--muted);font-size:13.5px}
.inp{position:relative;display:flex;align-items:center}
.inp input,.field select,.field textarea{width:100%;min-height:48px;border-radius:11px;border:1.5px solid var(--line2);background:var(--bg);color:var(--ink);font:600 17px var(--font);padding:0 14px;font-variant-numeric:tabular-nums}
.field textarea{padding:10px 14px;min-height:90px;font-weight:500;font-size:16px;line-height:1.5}
.inp input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px color-mix(in srgb,var(--teal) 22%,transparent)}
.inp .pre{position:absolute;left:14px;color:var(--muted);font-weight:700}.inp .pre+input{padding-left:30px}
.inp .post{position:absolute;right:12px;color:var(--muted);font-weight:700;font-size:15px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.seg{display:inline-flex;background:var(--panel2);border-radius:11px;padding:3px;gap:2px}
.seg button{border:0;background:transparent;color:var(--ink2);font:700 14px var(--font);padding:7px 12px;border-radius:9px;cursor:pointer}
.seg button[aria-pressed=true]{background:var(--panel);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12)}
.out{background:var(--panel2);border-radius:14px;padding:20px;align-self:start}
.out .lab{font-size:12.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.out .big{font-size:clamp(30px,5vw,42px);font-weight:800;letter-spacing:-.02em;line-height:1.15;font-variant-numeric:tabular-nums;margin:4px 0 6px;overflow-wrap:anywhere}
.out .big.pos{color:var(--good)}.out .big.neg{color:var(--bad)}
.out dl{display:grid;grid-template-columns:1fr auto;gap:8px 16px;margin:14px 0 0;font-size:15.5px}
.out dt{color:var(--muted)}.out dd{margin:0;text-align:right;font-weight:700;font-variant-numeric:tabular-nums}
.out .says{background:var(--panel);border-radius:10px;padding:12px 14px;margin-top:12px;font-size:15.5px;color:var(--ink2)}
.err{color:var(--bad);font-weight:650;font-size:15px;min-height:0}
.assume{font-size:14px;color:var(--muted);margin-top:14px}
.scen{width:100%;border-collapse:collapse;margin-top:14px;font-size:15px;font-variant-numeric:tabular-nums}
.scen td,.scen th{padding:7px 8px;border-bottom:1px solid var(--line);text-align:right}.scen th:first-child,.scen td:first-child{text-align:left}
.scen th{font-size:12.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.pos{color:var(--good)}.neg{color:var(--bad)}
.checklist{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.checklist label{display:flex;gap:12px;align-items:flex-start;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:12px 14px;cursor:pointer;font-size:16px;line-height:1.45}
.checklist input{width:20px;height:20px;margin-top:2px;flex:none;accent-color:var(--bad)}
.checklist label:has(input:checked){border-color:var(--bad);background:var(--bad-soft)}
.meter{height:12px;border-radius:99px;background:var(--line);overflow:hidden;margin:10px 0}
.meter i{display:block;height:100%;width:0;background:var(--good);transition:width .25s}
@media(prefers-reduced-motion:reduce){.meter i{transition:none}*{scroll-behavior:auto!important}}
/* chain demo */
.chain{display:flex;gap:12px;overflow-x:auto;padding:4px 2px 10px}
.blk{flex:0 0 250px;background:var(--panel);border:2px solid var(--good);border-radius:14px;padding:14px;font-size:14px}
.blk.bad{border-color:var(--bad);background:var(--bad-soft)}
.blk .h{font-weight:800;display:flex;justify-content:space-between;align-items:center}
.blk label{display:block;font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-top:8px}
.blk textarea{width:100%;min-height:58px;border:1px solid var(--line2);border-radius:8px;background:var(--bg);color:var(--ink);font:500 14px var(--font);padding:6px 8px;resize:vertical}
.blk .hash{font-family:var(--mono);font-size:12px;overflow-wrap:anywhere;color:var(--ink2)}
.blk .st{font-size:12.5px;font-weight:800}.blk .st.ok{color:var(--good)}.blk .st.no{color:var(--bad)}
.blk button{margin-top:8px;min-height:36px;padding:0 12px;font-size:14px}
/* glossary */
.az{display:flex;flex-wrap:wrap;gap:4px;margin:10px 0 18px}
.az a{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;background:var(--panel);border:1px solid var(--line);text-decoration:none;font-weight:750;color:var(--ink2)}
.az a:hover{border-color:var(--teal)}
.terms{display:grid;gap:12px}
.term{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:16px 20px;scroll-margin-top:90px}
.term:target{border-color:var(--teal);box-shadow:0 0 0 3px color-mix(in srgb,var(--teal) 22%,transparent)}
.term h3{margin:0 0 4px;font-size:19px}.term p{margin:0 0 6px}.term .rel{font-size:14.5px;color:var(--muted)}
.letter{font-size:22px;margin:26px 0 10px;color:var(--muted)}
.gfilter{max-width:460px}
/* footer */
.foot{border-top:1px solid var(--line);margin-top:40px;padding:40px 0 30px;font-size:15px;color:var(--muted)}
.foot .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
@media(max-width:820px){.foot .cols{grid-template-columns:1fr 1fr}}
.foot b{display:block;color:var(--ink);margin-bottom:8px;font-size:14px;letter-spacing:.06em;text-transform:uppercase}
.foot a{display:block;color:var(--ink2);text-decoration:none;padding:3px 0}.foot a:hover{color:var(--ink);text-decoration:underline}
.foot .risk{margin-top:26px;padding-top:18px;border-top:1px solid var(--line);font-size:14px}
/* search overlay */
.sov{position:fixed;inset:0;z-index:80;background:rgba(11,18,32,.45);display:flex;align-items:flex-start;justify-content:center;padding:10vh 16px 16px}
.sov[hidden]{display:none}
.sov .box{width:100%;max-width:640px;background:var(--panel);border-radius:18px;box-shadow:0 20px 60px rgba(0,0,0,.3);overflow:hidden}
.sov .bigsearch input{border:0;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none;height:60px}
.sov .results{position:static;border:0;border-radius:0;box-shadow:none;max-height:60vh}
.sov .hint{padding:12px 16px;color:var(--muted);font-size:14px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.hubhead{padding:34px 0 10px}
.hubhead .lede{font-size:19px;color:var(--ink2);max-width:720px}
.list{display:grid;gap:10px}
.list a{display:flex;justify-content:space-between;gap:16px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 18px;text-decoration:none;color:var(--ink)}
.list a:hover{border-color:var(--teal)}.list a span{color:var(--muted);font-size:15px}.list a b{font-weight:750}
@media(max-width:620px){.list a{flex-direction:column;align-items:flex-start;gap:2px}}
.prose{max-width:760px}
@media print{.top,.foot,.toc,.next,.sov{display:none!important}body{background:#fff}}
/* diagrams */
.d-box{fill:var(--panel2);stroke:var(--line2);stroke-width:1.5}
.d-box2{fill:var(--teal-soft);stroke:var(--teal);stroke-width:1.5}
.d-bad{fill:var(--bad-soft);stroke:var(--bad);stroke-width:1.5}
.d-t{fill:var(--ink);font:700 15px var(--font)}
.d-s{fill:var(--muted);font:600 12.5px var(--font)}
.d-m{fill:var(--ink2);font:500 12px var(--mono)}
.d-a{stroke:var(--teal-ink);stroke-width:2.2;fill:none}
.d-ah{fill:var(--teal-ink)}
.d-x{stroke:var(--bad);stroke-width:2.2;fill:none}
/* course */
.lessonbar{display:flex;align-items:center;gap:10px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:8px 14px;margin:6px 0 4px;font-size:14.5px;color:var(--ink2);text-decoration:none;width:fit-content;max-width:100%}
.lessonbar svg{width:18px;height:18px;color:var(--teal-ink);flex:none}.lessonbar .lp{color:var(--good);font-weight:700}
.quiz{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:22px 24px;margin:34px 0;box-shadow:var(--shadow)}
.quiz h2{margin:.2em 0 .1em}
.q{border:0;margin:18px 0 0;padding:0}.q legend{font-weight:700;font-size:17.5px;margin-bottom:8px;padding:0}
.opt{display:flex;gap:10px;align-items:flex-start;border:1.5px solid var(--line);border-radius:12px;padding:10px 14px;margin:6px 0;cursor:pointer;background:var(--bg);line-height:1.45}
.opt input{width:18px;height:18px;margin-top:3px;accent-color:var(--teal);flex:none}
.opt:hover{border-color:var(--line2)}
.opt.is-ok{border-color:var(--good);background:var(--good-soft)}.opt.is-bad{border-color:var(--bad);background:var(--bad-soft)}
.answered .opt{cursor:default}
.why{background:var(--panel2);border-radius:10px;padding:10px 14px;margin:8px 0 0;font-size:15.5px}
.right .why b{color:var(--good)}.wrong .why b{color:var(--bad)}
.qdone{background:var(--teal-soft);border-radius:12px;padding:12px 16px;margin-top:18px}
.qnav{margin:18px 0 0;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.lessons{list-style:none;padding:0;margin:18px 0 30px;display:grid;gap:10px}
.lesson a{display:flex;align-items:center;gap:14px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px 18px;text-decoration:none;color:var(--ink)}
.lesson a:hover{border-color:var(--teal)}
.lesson .ln{width:34px;height:34px;flex:none;border-radius:50%;background:var(--panel2);display:flex;align-items:center;justify-content:center;font-weight:800}
.lesson.is-done .ln{background:var(--good);color:#fff}
.lesson .lt{flex:1}.lesson .lt b{display:block;font-weight:750}.lesson .lt small{color:var(--muted);font-size:14px}
.lesson .lst{color:var(--good);font-weight:800;font-size:14.5px}
.course-prog .meter i{background:var(--teal)}
.cert{margin:10px 0 30px}.certin{border:3px double var(--teal);border-radius:18px;padding:30px;text-align:center;background:var(--panel)}
.certin h2{margin:.2em 0 .4em;font-size:clamp(26px,4vw,36px)}
@media print{html.print-cert body *{visibility:hidden}html.print-cert .cert,html.print-cert .cert *{visibility:visible}html.print-cert .cert{position:absolute;inset:40px 40px auto 40px}html.print-cert .cert button{display:none}}
.c101{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;background:var(--teal-soft);border:1px solid color-mix(in srgb,var(--teal) 40%,transparent);border-radius:22px;padding:30px}
.c101 h2{margin:.2em 0 .3em}.c101 p{margin:0;color:var(--ink2)}
@media(max-width:700px){.c101{grid-template-columns:1fr;padding:22px}}

/* Wall Street details */
.brand{font-family:var(--serif);font-size:21px;letter-spacing:0}
.eyebrow,.answer .lab,.out .lab,.toc b,.foot b,.content th,.scen th{font-family:var(--mono);letter-spacing:.14em}
.ticker{border-bottom:1px solid var(--line);background:var(--panel);overflow:hidden;white-space:nowrap;font:500 13px var(--mono);color:var(--ink2)}
.ticker .tk{display:inline-flex;gap:38px;padding:8px 0;animation:tick 70s linear infinite}
.ticker span b{color:var(--teal-ink);font-weight:500;margin-right:8px}.ticker .up{color:var(--good)}.ticker .dn{color:var(--bad)}
.ticker:hover .tk{animation-play-state:paused}
@keyframes tick{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media(prefers-reduced-motion:reduce){.ticker .tk{animation:none}}
.hero h1{font-weight:700;letter-spacing:-.02em}
.hero{border-bottom:1px solid var(--line)}
.card,.tool,.quiz,.list a,.term,.lesson a,.next a,.opt,.diagram,details.tech,.callout,.stepdetail,.steps3 button,.chips a,.chips button{border-radius:6px}
.bigsearch input{border-radius:8px}
.card .ic{border-radius:6px}
.feature{border-radius:8px;background:linear-gradient(135deg,#111111,#000000);border-color:var(--line2)}

.big,.out dd,.scen td,.ticker{font-variant-numeric:tabular-nums}
.out .big{font-family:var(--mono);font-weight:500;letter-spacing:-.02em}
.section .wrap>h2,.hubhead h1{border-top:2px solid var(--teal);padding-top:14px;width:fit-content}
.c101 .eyebrow,.feature .eyebrow{display:block}
.answer{border-left-color:var(--teal)}
.c101{border-radius:8px}

.tag.t-coin{background:var(--teal-soft);color:var(--teal-ink)}
.coinhead{display:flex;align-items:center;gap:16px;margin-top:6px}
.coinhead h1{margin:0}
.coinbadge{flex:none;width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;font:600 15px var(--mono);color:var(--coin-ink,#fff);background:var(--coin);box-shadow:0 0 0 3px color-mix(in srgb,var(--coin) 30%,transparent)}
.coinpage .answer{border-left-color:var(--coin)}
.facts th{text-transform:none;letter-spacing:0;font:600 15px var(--font);color:var(--muted);width:42%}
.facts td{font-weight:600}
.coingrid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:900px){.coingrid{grid-template-columns:1fr 1fr}}@media(max-width:600px){.coingrid{grid-template-columns:1fr}}
.coincard{display:flex;gap:14px;align-items:center;background:var(--panel);border:1px solid var(--line);border-top:3px solid var(--coin);border-radius:6px;padding:16px;text-decoration:none;color:var(--ink)}
.coincard:hover{border-color:var(--teal)}.coincard .coinbadge{width:46px;height:46px;font-size:13px}
.coincard b{display:block;font-weight:750}.coincard small{color:var(--muted);font-size:13.5px;line-height:1.4}

/* ===== glossy Wall Street theme ===== */
body{background:radial-gradient(1200px 600px at 15% -10%,rgba(30,144,255,.16),transparent 60%),radial-gradient(900px 500px at 95% 0%,rgba(232,198,116,.08),transparent 60%),var(--bg);background-attachment:fixed;font-feature-settings:"cv11","ss01"}
:root[data-theme=light] body{background:radial-gradient(1200px 600px at 15% -10%,rgba(11,111,216,.10),transparent 60%),var(--bg)}
h1,h2,h3{font-family:var(--font);letter-spacing:-.025em;font-weight:800}
h1{letter-spacing:-.035em}
.top{background:color-mix(in srgb,var(--bg) 72%,transparent);border-bottom:1px solid rgba(140,203,255,.10)}
.brand{font-weight:800;letter-spacing:-.03em}
.nav a{font-weight:600;border-radius:999px}
.icon-btn{border-radius:999px;background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.01)),var(--panel)}
.btn{border-radius:999px;font-weight:700;letter-spacing:-.01em;transition:transform .15s ease,box-shadow .2s ease,filter .2s ease}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:linear-gradient(180deg,#4AA8FF 0%,#1E90FF 45%,#0A6FDB 100%);border:1px solid rgba(255,255,255,.18);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.35) inset,0 8px 24px rgba(30,144,255,.38),0 0 0 1px rgba(30,144,255,.25)}
.btn.primary:hover{filter:brightness(1.08);box-shadow:0 1px 0 rgba(255,255,255,.4) inset,0 12px 32px rgba(30,144,255,.5),0 0 0 1px rgba(30,144,255,.35)}
.card,.list a,.next a,.tool,.quiz,.opt,.diagram,.callout,.answer,.coincard,.lesson a,.stepdetail,.steps3 button,.feature,.c101{border-radius:18px}
.card,.list a,.next a,.coincard,.tool,.lesson a,.steps3 button{background:linear-gradient(180deg,rgba(255,255,255,.055) 0%,rgba(255,255,255,.012) 60%),var(--panel);border:1px solid rgba(140,203,255,.12);box-shadow:0 1px 0 rgba(255,255,255,.07) inset,0 14px 34px rgba(0,0,0,.32);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.card:hover,.list a:hover,.next a:hover,.coincard:hover,.lesson a:hover{transform:translateY(-3px);border-color:rgba(140,203,255,.35);box-shadow:0 1px 0 rgba(255,255,255,.09) inset,0 18px 44px rgba(0,0,0,.4),0 0 0 1px rgba(30,144,255,.15)}
:root[data-theme=light] .card,:root[data-theme=light] .list a,:root[data-theme=light] .next a,:root[data-theme=light] .coincard,:root[data-theme=light] .tool,:root[data-theme=light] .lesson a,:root[data-theme=light] .steps3 button{background:linear-gradient(180deg,#fff,#F7F9FD);border-color:var(--line);box-shadow:var(--shadow)}
.card .ic{border-radius:14px;background:linear-gradient(145deg,rgba(30,144,255,.28),rgba(30,144,255,.06));border:1px solid rgba(140,203,255,.22);color:var(--teal-ink)}
.eyebrow{color:var(--gold);letter-spacing:.14em;font-family:var(--mono);font-weight:600}
.hero{padding:84px 0 56px;border-bottom:0;overflow:visible}
.hero::before{content:"";position:absolute;inset:-40px 0 0;z-index:-1;background:radial-gradient(600px 300px at 50% 30%,rgba(30,144,255,.28),transparent 70%),radial-gradient(500px 260px at 80% 70%,rgba(232,198,116,.12),transparent 70%)}
.hero h1{font-size:clamp(44px,8vw,84px);font-weight:850;letter-spacing:-.045em;background:linear-gradient(180deg,#FFFFFF 0%,#D6E8FF 55%,#8CCBFF 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
:root[data-theme=light] .hero h1{background:linear-gradient(180deg,#0A1428 0%,#0B3E80 100%);-webkit-background-clip:text;background-clip:text}
.bigsearch input{border-radius:999px;background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02)),var(--panel);border:1px solid rgba(140,203,255,.22);box-shadow:0 1px 0 rgba(255,255,255,.08) inset,0 16px 40px rgba(0,0,0,.35)}
.bigsearch input:focus{border-color:var(--teal);box-shadow:0 0 0 4px rgba(30,144,255,.22),0 16px 40px rgba(0,0,0,.35)}
.chips a,.chips button{border-radius:999px;background:rgba(255,255,255,.04);border:1px solid rgba(140,203,255,.16)}
.ticker{background:linear-gradient(90deg,#071226,#0A1A36 50%,#071226);border-bottom:1px solid rgba(232,198,116,.18);font-family:var(--mono)}
.ticker span b{color:var(--gold)}
:root[data-theme=light] .ticker{background:#0A1428;color:#C3CDDD}
.section .wrap>h2,.hubhead h1{border-top:0;padding-top:0;width:auto}
.section .wrap>h2{font-size:clamp(28px,4vw,40px)}
.feature,.c101{background:radial-gradient(500px 220px at 85% 0%,rgba(30,144,255,.22),transparent 70%),linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.01)),var(--panel);border:1px solid rgba(140,203,255,.16);box-shadow:0 1px 0 rgba(255,255,255,.08) inset,0 20px 50px rgba(0,0,0,.35)}
:root[data-theme=light] .feature,:root[data-theme=light] .c101{background:linear-gradient(180deg,#fff,#EEF4FD);border-color:var(--line);box-shadow:var(--shadow)}
.big,.out dd,.scen td,.facts td{font-family:var(--mono)}
.foot{border-top:1px solid rgba(140,203,255,.10);background:linear-gradient(180deg,transparent,rgba(6,16,31,.6))}
/* glossy home additions */
.trustbar{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 28px;margin:28px 0 0;color:var(--ink2);font-weight:600;font-size:15px}
.trustbar span{display:inline-flex;align-items:center;gap:8px}.trustbar svg{width:18px;height:18px;color:var(--gold)}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 18px}
.tabs button{border-radius:999px;border:1px solid rgba(140,203,255,.16);background:rgba(255,255,255,.03);color:var(--ink2);font:600 15px var(--font);padding:9px 16px;cursor:pointer;min-height:42px}
.tabs button[aria-selected=true]{background:linear-gradient(180deg,#4AA8FF,#1E90FF 50%,#0A6FDB);color:#fff;border-color:transparent;box-shadow:0 6px 18px rgba(30,144,255,.35)}
.coinrow{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.coinrow a{display:flex;gap:14px;align-items:center;padding:14px 16px;border-radius:16px;text-decoration:none;color:var(--ink);background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.01)),var(--panel);border:1px solid rgba(140,203,255,.12)}
.coinrow a:hover{border-color:rgba(140,203,255,.35)}
.coinrow .cb{flex:none;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font:700 13px var(--mono);box-shadow:0 1px 0 rgba(255,255,255,.35) inset,0 6px 16px rgba(0,0,0,.35)}
.coinrow b{display:block;font-size:16px}.coinrow small{color:var(--muted);font:500 13px var(--mono)}
.coinrow .why{margin-left:auto;color:var(--muted);font-size:13px;text-align:right;max-width:110px}
.feat4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
@media(max-width:900px){.feat4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:520px){.feat4{grid-template-columns:1fr}}
.feat4 .card h3{margin-top:14px}
.cta{text-align:center;padding:56px 24px;border-radius:24px;background:radial-gradient(500px 260px at 50% 0%,rgba(30,144,255,.35),transparent 70%),linear-gradient(180deg,#0E1E3D,#081327);border:1px solid rgba(140,203,255,.2);box-shadow:0 1px 0 rgba(255,255,255,.08) inset,0 24px 60px rgba(0,0,0,.4)}
.cta h2{font-size:clamp(28px,4.5vw,44px);margin:0 0 10px;color:#fff}.cta p{color:#C3CDDD;max-width:560px;margin:0 auto 22px}
.faqs details{border-bottom:1px solid var(--line);padding:6px 0}
.faqs summary{cursor:pointer;list-style:none;font-weight:700;font-size:18px;padding:14px 36px 14px 0;position:relative}
.faqs summary::-webkit-details-marker{display:none}
.faqs summary::after{content:"+";position:absolute;right:6px;top:10px;font-size:24px;color:var(--teal-ink)}
.faqs details[open] summary::after{content:"−"}
.faqs details p{color:var(--ink2);margin:0 0 14px}
.coinrow[hidden]{display:none}.hero-art{opacity:.22}
.coinrow .why{white-space:nowrap;max-width:none;background:rgba(140,203,255,.08);border:1px solid rgba(140,203,255,.14);border-radius:999px;padding:3px 10px;font-size:12px;color:var(--ink2)}
.coinrow a>span:nth-child(2){min-width:0}
.foot .risk b{font-family:var(--font)}
:root[data-theme=light] .ticker span b{color:#F3D995}:root[data-theme=light] .ticker{color:#DCE4F2}
:root[data-theme=light] .ticker span b{color:#F3D995}:root[data-theme=light] .ticker{color:#DCE4F2}
/* live prices */
.pxbox{margin:20px 0 28px;padding:22px;border-radius:20px;background:radial-gradient(420px 180px at 90% 0%,color-mix(in srgb,var(--coin,#1E90FF) 30%,transparent),transparent 70%),linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.01)),var(--panel);border:1px solid rgba(140,203,255,.16);box-shadow:0 1px 0 rgba(255,255,255,.08) inset,0 20px 50px rgba(0,0,0,.35)}
:root[data-theme=light] .pxbox{background:linear-gradient(180deg,#fff,#F3F7FD);border-color:var(--line);box-shadow:var(--shadow)}
.pxtop{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px}
.pxlab{width:100%;font:600 13px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--gold)}
.pxp{font:700 clamp(34px,6vw,52px)/1.1 var(--mono);letter-spacing:-.02em;color:var(--ink)}
.chg{font:700 18px var(--mono)}.up{color:var(--good)}.dn{color:var(--bad)}
.pxstats{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px 18px;margin:18px 0 0}
.pxstats div{border-top:1px solid var(--line);padding-top:8px}.pxstats dt{font-size:13px;color:var(--muted)}.pxstats dd{margin:2px 0 0;font:600 16px var(--mono);color:var(--ink)}
.pxnote{font-size:13px;color:var(--muted);margin:14px 0 0}
.pxconv{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:18px 0 0}
.pxconv label{display:flex;align-items:center;gap:8px;flex:1 1 180px;background:var(--panel2);border:1px solid var(--line2);border-radius:14px;padding:0 12px}
.pxconv label span{font:700 14px var(--mono);color:var(--muted)}
.pxconv input{flex:1;min-width:0;border:0;background:transparent;color:var(--ink);font:600 18px var(--mono);padding:12px 0;outline:0}
.pxconv label:focus-within{border-color:var(--teal);box-shadow:0 0 0 3px rgba(30,144,255,.2)}
.pxtable table{width:100%;border-collapse:collapse}.pxtable th,.pxtable td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:right;font-family:var(--mono);white-space:nowrap}
.pxtable th:first-child,.pxtable td:first-child{text-align:left;font-family:var(--font)}
.pxname{display:inline-flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:700}.pxname small{color:var(--muted);font:500 12px var(--mono)}
.pxname .cb,.coinrow .cb{width:34px;height:34px;border-radius:50%;display:inline-grid;place-items:center;font:700 11px var(--mono);flex:none}
.pxmini{margin-left:auto;text-align:right;display:flex;flex-direction:column;align-items:flex-end}
.pxmini b{font:700 15px var(--mono)}.pxmini i{font:600 12px var(--mono);font-style:normal}
.pxconv label{flex:1 1 130px;min-width:0}
:root[data-theme=light]{--gold:#7A5A0C}