:root{
  --bg:#f4f6f3;--surface:#ffffff;--surface-2:#f0f3ef;
  --ink:#121a16;--muted:#5a6b62;--faint:#8a988f;
  --line:#e3e8e2;--line-strong:#d3dbd3;
  --accent:#1E6FB8;--accent-ink:#144F85;--accent-wash:#E4EFF9;
  --up:#1E6FB8;--down:#d84848;--warn:#b9771a;--warn-wash:#f7ecd9;
  --radius:16px;--maxw:1080px;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --display:"Bricolage Grotesque","IBM Plex Sans",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"Cascadia Code",monospace;
  color-scheme:light dark;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0B0D10;--surface:#121816;--surface-2:#171f1b;--ink:#eaf1ec;--muted:#95a69b;--faint:#6d7d73;
  --line:#1f2a24;--line-strong:#2a3830;--accent:#4FA3E3;--accent-ink:#A9D4F5;--accent-wash:#0F2233;
  --up:#4FA3E3;--down:#f16a6a;--warn:#e0a526;--warn-wash:#2a2210;color-scheme:dark;}}
:root[data-theme="dark"]{
  --bg:#0B0D10;--surface:#121816;--surface-2:#171f1b;--ink:#eaf1ec;--muted:#95a69b;--faint:#6d7d73;
  --line:#1f2a24;--line-strong:#2a3830;--accent:#4FA3E3;--accent-ink:#A9D4F5;--accent-wash:#0F2233;
  --up:#4FA3E3;--down:#f16a6a;--warn:#e0a526;--warn-wash:#2a2210;color-scheme:dark;}
*{box-sizing:border-box}html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
a{color:inherit}
.article p a,.article li a,.article .lead a,.callout p a,.warnbox p a,.fa a{color:var(--accent-ink);text-decoration:underline;text-underline-offset:2px}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) :is(.article p a,.article li a,.article .lead a,.callout p a,.warnbox p a,.fa a){color:var(--accent)}}
:root[data-theme="dark"] :is(.article p a,.article li a,.article .lead a,.callout p a,.warnbox p a,.fa a){color:var(--accent)}
h1,h2,h3,h4{font-family:var(--display);margin:0;text-wrap:balance;letter-spacing:-.01em;font-weight:700;color:var(--ink)}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hrow{display:flex;align-items:center;gap:16px;padding-block:12px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:800;font-size:1.02rem;letter-spacing:-.02em;text-decoration:none;color:var(--ink)}
.brand .mk{width:30px;height:30px;border-radius:9px;flex:none}
.nav{display:flex;gap:18px;margin-left:8px}
.nav a{font-size:.9rem;color:var(--muted);text-decoration:none;font-weight:500}
.nav a:hover,.nav a[aria-current]{color:var(--ink)}
.spacer{flex:1}
.iconbtn{width:38px;height:38px;border-radius:10px;border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);cursor:pointer;display:grid;place-items:center;flex:none}
.iconbtn:hover{border-color:var(--accent)}
@media(max-width:640px){.nav{display:none}}
.crumb{font-size:.82rem;color:var(--muted);padding-block:18px 0}
.crumb a{color:var(--muted);text-decoration:none}.crumb a:hover{color:var(--ink)}
.article{max-width:74ch;margin:0 auto;padding-block:10px 16px}
.article .kicker{display:inline-flex;align-items:center;gap:8px;background:var(--accent-wash);color:var(--accent-ink);padding:5px 11px;border-radius:999px;font-size:.74rem;font-weight:600;margin-top:18px}
.article h1{font-size:clamp(2rem,5vw,2.9rem);line-height:1.05;font-weight:800;margin:16px 0 10px}
.article .lead{color:var(--muted);font-size:1.1rem;margin:0 0 6px}
.article .meta{font-size:.8rem;color:var(--faint);margin-top:10px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.article h2{font-size:1.5rem;margin:38px 0 12px;padding-top:10px}
.article h3{font-size:1.18rem;margin:26px 0 8px}
.article p{margin:0 0 14px}
.article ul,.article ol{margin:0 0 16px;padding-left:22px}
.article li{margin-bottom:7px}
.article b,.article strong{color:var(--ink);font-weight:600}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin:22px 0}
.toc .tl{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);font-weight:600;margin-bottom:8px}
.toc ol{margin:0;padding-left:18px}
.toc a{text-decoration:none}
.callout{background:var(--accent-wash);border:1px solid color-mix(in srgb,var(--accent) 26%,transparent);border-radius:12px;padding:14px 18px;margin:18px 0}
.callout .ct{font-weight:600;color:var(--accent-ink);margin-bottom:3px}
.callout p{margin:0;color:var(--ink)}
.warnbox{background:var(--warn-wash);border:1px solid color-mix(in srgb,var(--warn) 26%,transparent);border-radius:12px;padding:14px 18px;margin:18px 0}
.warnbox p{margin:0;color:var(--ink)}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.94rem}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
th{font-family:var(--display);font-weight:700;font-size:.9rem}
td .num,th .num{font-family:var(--mono)}
.faq details{border:1px solid var(--line);border-radius:12px;background:var(--surface);margin-bottom:10px;overflow:hidden}
.faq summary{cursor:pointer;padding:16px 18px;font-weight:600;font-family:var(--display);font-size:1.04rem;list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-size:1.4rem;font-weight:400}
.faq details[open] summary::after{content:"\2212"}
.faq .fa{padding:0 18px 16px;color:var(--muted)}
.faq .fa p{margin:0 0 10px}
.ad{border:1px dashed var(--line-strong);border-radius:12px;background:var(--surface-2);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--faint);text-align:center;padding:16px;margin:24px 0}
.ad .k{font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;font-weight:600}
.ad .d{font-size:.8rem}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:18px 0 6px}
@media(max-width:720px){.related{grid-template-columns:1fr}}
.related a{display:block;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;text-decoration:none;color:var(--ink)}
.related a:hover{border-color:var(--accent)}
.related .rt{font-family:var(--display);font-weight:700;font-size:1.02rem}
.related .rd{font-size:.84rem;color:var(--muted);margin-top:4px}
.cta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:22px 0;padding:16px 18px;border-radius:14px;background:var(--accent-wash);border:1px solid color-mix(in srgb,var(--accent) 30%,transparent);flex-wrap:wrap}
.cta .ct{font-size:.92rem;color:var(--accent-ink);font-weight:500;min-width:0}
.cta a{background:var(--accent);color:#04120d;text-decoration:none;font-weight:700;font-size:.9rem;padding:10px 18px;border-radius:10px;white-space:nowrap}
.disc{font-size:.82rem;color:var(--faint);margin:26px 0;max-width:74ch}
footer{border-top:1px solid var(--line);margin-top:30px}
.frow{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:22px;font-size:.84rem;color:var(--muted)}
.frow a{color:var(--muted);text-decoration:none}.frow a:hover{color:var(--ink)}
.flinks{display:flex;gap:16px;flex-wrap:wrap}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.liverate{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin:22px 0}
.lrtop{display:flex;justify-content:space-between;align-items:baseline;gap:10px;flex-wrap:wrap}
.lrlabel{font-weight:600;font-size:.92rem}
.lrtime{font-size:.78rem;color:var(--muted)}
.lrnum{display:flex;align-items:baseline;gap:12px;margin-top:8px;flex-wrap:wrap}
.lrnum .num{font-weight:600;font-size:clamp(2.2rem,7vw,3rem);letter-spacing:-.03em;line-height:1}
.lru{font-family:var(--display);font-weight:700;font-size:1.1rem;color:var(--muted)}
.chg{display:inline-flex;align-items:center;gap:5px;font-family:var(--mono);font-weight:600;font-size:.9rem;padding:3px 9px;border-radius:8px}
.chg.up{color:var(--up);background:color-mix(in srgb,var(--up) 13%,transparent)}
.chg.down{color:var(--down);background:color-mix(in srgb,var(--down) 13%,transparent)}
.ratelinks{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:14px 0 4px}
@media(max-width:720px){.ratelinks{grid-template-columns:repeat(2,1fr)}}
.ratelinks a{display:block;text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 8px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.88rem}
.ratelinks a:hover{border-color:var(--accent)}
.ratelinks a[aria-current]{border-color:var(--accent);background:var(--accent-wash)}

.navdd{position:relative}
.navddbtn{background:none;border:0;font:inherit;color:var(--muted);font-size:.9rem;font-weight:500;cursor:pointer;padding:0;display:inline-flex;align-items:center;gap:4px}
.navddbtn:hover{color:var(--ink)}
.navddmenu{position:absolute;top:100%;left:0;padding-top:12px;opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .14s,transform .14s;z-index:40}
.navddinner{min-width:250px;background:var(--surface);border:1px solid var(--line-strong);border-radius:14px;padding:7px;box-shadow:0 14px 34px rgba(0,0,0,.22)}
.navdd:hover .navddmenu,.navdd:focus-within .navddmenu{opacity:1;visibility:visible;transform:translateY(0)}
.navddinner a{display:block;padding:9px 12px;border-radius:10px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.9rem}
.navddinner a span{display:block;font-weight:400;font-size:.77rem;color:var(--muted);margin-top:1px}
.navddinner a:hover{background:var(--surface-2)}

.rlist{display:grid;gap:10px}
.rrow{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px 16px;text-decoration:none;color:inherit}
.rrow:hover{border-color:var(--accent)}
.bd{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:#fff;font-family:var(--mono);font-size:.78rem;font-weight:600;flex:none}
.rtx{flex:1;min-width:0}
.rtx b{display:block;font-family:var(--display);font-size:1rem;font-weight:700}
.rtx span{color:var(--muted);font-size:.85rem}
.rval{text-align:right;font-variant-numeric:tabular-nums;flex:none}
.rval b{display:block;font-family:var(--display);font-size:1.1rem;font-weight:700}
.rval .c{font-family:var(--mono);font-size:.76rem;color:var(--muted)}
.rval .c.up{color:var(--accent)}
.rval .c.down{color:var(--down)}
.conv{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;display:grid;gap:14px;margin:18px 0 28px}
.conv label{display:grid;gap:6px;color:var(--muted);font-size:.9rem}
.conv input{font:inherit;font-size:1.05rem;padding:11px 13px;border-radius:12px;border:1px solid var(--line-strong);background:var(--surface-2);color:var(--ink);width:100%}
.conv input:focus{outline:2px solid var(--accent);outline-offset:1px}
.cnote{color:var(--muted);font-size:.85rem}

.nav{display:flex}
@media(max-width:640px){.nav{margin-left:0;gap:12px}.nav>a{display:none}}
.navdd.open .navddmenu{opacity:1;visibility:visible;transform:translateY(0)}