/* TradeThink blog (blog.tradethink.net). Same tokens and square corners as the rest of the site. */
:root{--font:'Google Sans',Arial,Helvetica,sans-serif;--bg:#f2f5fa;--panel:#fff;--soft:#F4F6F8;--ink:#16232E;--ink2:#55646F;--line:#D9DFE4;--accent:#111;--accent-ink:#fff;--pos:#12A150;--neg:#E5484D;color-scheme:light}
@media all{:root:not([data-theme=light]){--bg:#000;--panel:#0A0A0A;--soft:#141414;--ink:#ECECEC;--ink2:#9A9A9A;--line:#222;--accent:#F2F2F2;--accent-ink:#0A0A0A;--pos:#2BD46E;--neg:#FF5C61;color-scheme:dark}}
*,*::before,*::after{box-sizing:border-box;border-radius:0!important}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.7}
a{color:var(--ink);text-underline-offset:3px}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.skip{position:absolute;left:-999px;top:8px;background:var(--panel);padding:8px 12px;z-index:20}.skip:focus{left:8px}
.b-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.b-wrap{max-width:1180px;margin:0 auto;padding:0 20px}
/* images: dark version by default, light version in light mode */
.bimg{display:block;position:relative;background:var(--soft)}
.bimg img{display:block;width:100%;height:auto}
.bimg .im-l{display:none}
:root[data-theme=light] .bimg .im-l{display:block}:root[data-theme=light] .bimg .im-d{display:none}
/* header */
.b-top{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.b-bar{display:flex;align-items:center;gap:14px;height:64px}
.b-brand{display:inline-flex;align-items:baseline;text-decoration:none;color:var(--ink);font:400 24px/1 "JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;letter-spacing:-.03em;white-space:nowrap}
.b-brand b{font-weight:400}.b-brand u{display:inline-block;width:.6em;height:.13em;background:var(--ink);margin-inline-start:.08em}
.b-brand span{font:500 15px/1 var(--font);letter-spacing:0;color:var(--ink2);margin-inline-start:12px;padding-inline-start:12px;border-inline-start:1px solid var(--line)}
.b-nav{display:flex;gap:2px;margin-inline-start:auto}
.b-nav a{padding:8px 12px;text-decoration:none;color:var(--ink2);font-size:14.5px}.b-nav a:hover{color:var(--ink)}
.b-ib{display:inline-grid;place-items:center;width:36px;height:36px;padding:0;border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer}
.b-ib svg{width:17px;height:17px}.b-ib:hover{background:var(--soft)}
.b-cta,.b-btn{display:inline-flex;align-items:center;height:36px;padding:0 16px;background:var(--accent);color:var(--accent-ink);text-decoration:none;font-size:14.5px;font-weight:500;white-space:nowrap}
.b-btn{height:44px;padding:0 20px;font-size:15.5px}
.b-btn2{display:inline-flex;align-items:center;height:44px;padding:0 20px;border:1px solid var(--line);color:var(--ink);text-decoration:none;font-size:15.5px;background:var(--panel)}
.b-cta:hover,.b-btn:hover{opacity:.88}
/* index */
.b-index{padding-top:48px;padding-bottom:80px}
.b-ih{max-width:760px;margin-bottom:26px}
.b-ih h1{font-size:clamp(34px,5.4vw,56px);line-height:1.04;letter-spacing:-.035em;margin:0 0 14px;font-weight:600}
.b-ih p{font-size:18.5px;color:var(--ink2);margin:0 0 22px;max-width:62ch}
.b-search{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.b-search input{width:min(440px,100%);height:46px;padding:0 14px;border:1px solid var(--line);background:var(--panel);color:var(--ink);font:inherit;font-size:16px}
.b-search input:focus{outline:2px solid var(--ink);outline-offset:-1px}
.b-chips{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 30px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.b-chips a{padding:7px 14px;border:1px solid var(--line);background:var(--panel);text-decoration:none;color:var(--ink2);font-size:14.5px;white-space:nowrap}
.b-chips a:hover{color:var(--ink)}.b-chips a[aria-current=page]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.b-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 24px}
.b-card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);min-width:0}
.b-card .bimg{border-bottom:1px solid var(--line)}
.b-cbody{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.b-cat{font-size:13.5px;color:var(--ink2);text-decoration:none;margin-bottom:6px}.b-cat:hover{color:var(--ink);text-decoration:underline}
.b-ct{font-size:19px;line-height:1.3;margin:0 0 8px;letter-spacing:-.01em;font-weight:600}
.b-ct a{text-decoration:none}.b-ct a:hover{text-decoration:underline}
.b-card p{margin:0 0 14px;color:var(--ink2);font-size:15px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.b-meta{font-size:13.5px;color:var(--ink2);margin-top:auto}
.b-feat{margin-bottom:28px}
.b-card.big{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr)}
.b-card.big .bimg{border-bottom:0;border-inline-end:1px solid var(--line);height:100%}
.b-card.big .bimg img{height:100%;object-fit:cover}
.b-card.big .b-cbody{padding:30px 32px;justify-content:center}
.b-card.big .b-ct{font-size:clamp(24px,2.8vw,34px);line-height:1.15;letter-spacing:-.025em}
.b-card.big p{-webkit-line-clamp:4;font-size:16.5px}
.b-card.big .b-meta{margin-top:0}
.b-empty{color:var(--ink2);padding:30px 0}
/* post */
.b-post{padding-top:28px;padding-bottom:80px}
.b-crumb{display:flex;gap:8px;font-size:14px;color:var(--ink2);margin-bottom:22px;flex-wrap:wrap}
.b-crumb a{color:var(--ink2);text-decoration:none}.b-crumb a:hover{color:var(--ink);text-decoration:underline}
.b-ph{max-width:860px}
.b-ph h1{font-size:clamp(32px,4.8vw,52px);line-height:1.08;letter-spacing:-.033em;margin:0 0 16px;font-weight:600;text-wrap:balance}
.b-dek{font-size:20px;line-height:1.5;color:var(--ink2);margin:0 0 18px;max-width:64ch}
.b-ph .b-meta{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 26px}
.b-hero{border:1px solid var(--line);margin-bottom:40px}
.b-pgrid{display:grid;grid-template-columns:220px minmax(0,720px);gap:56px;justify-content:start}
.b-toc{position:sticky;top:92px;align-self:start;font-size:14px;max-height:calc(100vh - 110px);overflow:auto}
.b-toc b{display:block;font-size:13px;color:var(--ink2);font-weight:500;margin:0 0 8px}
.b-toc ol{list-style:none;margin:0 0 26px;padding:0;border-inline-start:1px solid var(--line)}
.b-toc li a{display:block;padding:5px 12px;color:var(--ink2);text-decoration:none;line-height:1.4;margin-inline-start:-1px;border-inline-start:2px solid transparent}
.b-toc li a:hover{color:var(--ink)}.b-toc li a.on{color:var(--ink);border-inline-start-color:var(--ink)}
.b-share{display:flex;flex-wrap:wrap;gap:6px}.b-share b{width:100%}
.b-share a,.b-share button{padding:5px 10px;border:1px solid var(--line);background:var(--panel);color:var(--ink2);font:inherit;font-size:13.5px;text-decoration:none;cursor:pointer}
.b-share a:hover,.b-share button:hover{color:var(--ink)}
.b-body{min-width:0}
.b-body>p:first-child{font-size:19px}
.b-body h2{font-size:27px;line-height:1.25;letter-spacing:-.02em;margin:46px 0 12px;font-weight:600}
.b-body h3{font-size:20px;line-height:1.3;margin:30px 0 8px;font-weight:600}
.b-body p,.b-body li{max-width:70ch}
.b-body ul,.b-body ol{padding-inline-start:24px}.b-body li{margin:6px 0}
.b-body blockquote{margin:24px 0;padding:4px 0 4px 20px;border-inline-start:3px solid var(--ink);color:var(--ink);font-size:19px}
.b-body code{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:.88em;background:var(--soft);padding:1px 5px}
.b-body pre{background:var(--soft);border:1px solid var(--line);padding:14px 16px;overflow:auto}.b-body pre code{background:none;padding:0}
.btw{overflow-x:auto;margin:22px 0;border:1px solid var(--line)}
.b-body table{border-collapse:collapse;width:100%;font-size:15.5px;background:var(--panel)}
.b-body th,.b-body td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:start;vertical-align:top}
.b-body th{font-weight:600;background:var(--soft)}.b-body tr:last-child td{border-bottom:0}
.bfig{margin:30px 0}.bfig .bimg{border:1px solid var(--line)}
.bfig figcaption{font-size:14.5px;color:var(--ink2);margin-top:8px;line-height:1.5}
.b-try{margin:48px 0 34px;padding:26px 28px;border:1px solid var(--line);background:var(--panel)}
.b-try h2{margin:0 0 8px;font-size:22px}.b-try p{margin:0 0 16px;color:var(--ink2)}.b-try p:last-child{margin:0;display:flex;gap:10px;flex-wrap:wrap}
.b-pn{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:10px}
.b-pn a{display:block;padding:16px 18px;border:1px solid var(--line);background:var(--panel);text-decoration:none;line-height:1.4;font-weight:500}
.b-pn a span{display:block;font-size:13px;color:var(--ink2);font-weight:400;margin-bottom:4px}
.b-pn a:hover{border-color:var(--ink2)}.b-next{text-align:end}
.b-rel{margin-top:70px;padding-top:34px;border-top:1px solid var(--line)}
.b-rel h2{font-size:26px;letter-spacing:-.02em;margin:0 0 22px;font-weight:600}
/* footer */
.b-ft{border-top:1px solid var(--line);background:var(--panel);padding:48px 0 26px;font-size:14.5px}
.b-ftg{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
.b-ftg p{color:var(--ink2);max-width:36ch;margin:14px 0 0}
.b-ft h2{font-size:14px;margin:0 0 10px;font-weight:600}
.b-ft ul{list-style:none;margin:0;padding:0}.b-ft li{margin:5px 0}.b-ft li a{color:var(--ink2);text-decoration:none}.b-ft li a:hover{color:var(--ink)}
.b-ftb{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:36px;padding-top:20px;border-top:1px solid var(--line);color:var(--ink2);font-size:13.5px}
.b-ftb a{color:var(--ink2)}
@media(max-width:1020px){.b-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.b-pgrid{grid-template-columns:minmax(0,1fr)}.b-toc{position:static;max-height:none;border:1px solid var(--line);background:var(--panel);padding:16px 18px}.b-toc ol{margin-bottom:16px}}
@media(max-width:760px){body{font-size:16.5px}.b-nav{display:none}.b-cta{margin-inline-start:auto}.b-grid{grid-template-columns:minmax(0,1fr)}.b-card.big{grid-template-columns:minmax(0,1fr)}.b-card.big .bimg{border-inline-end:0;border-bottom:1px solid var(--line)}.b-card.big .b-cbody{padding:18px}.b-ftg{grid-template-columns:1fr 1fr}.b-ftg>div:first-child{grid-column:1/-1}.b-pn{grid-template-columns:1fr}.b-dek{font-size:18px}.b-body h2{font-size:23px}.b-brand span{margin-inline-start:8px;padding-inline-start:8px}.b-index{padding-top:30px}}
@media(max-width:420px){.b-brand{font-size:21px}.b-cta{padding:0 12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.b-top,.b-ft,.b-toc,.b-try,.b-rel,.b-pn{display:none}.b-pgrid{display:block}}