:root{--ink:#14213D;--ink-2:#44506A;--paper:#FFFFFF;--mist:#EDF2F4;--teal:#0B6E6E;--teal-deep:#084F4F;--saffron:#F2B233;--line:#D5DEE2;--measure:68ch;
--display:"Bricolage Grotesque",ui-sans-serif,system-ui,sans-serif;--body:"IBM Plex Sans","IBM Plex Sans Arabic",ui-sans-serif,system-ui,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--body);color:var(--ink);background:var(--paper);font-size:1.0625rem;line-height:1.65}
img,svg{max-width:100%;height:auto}a{color:var(--teal);text-underline-offset:.18em}a:hover{color:var(--teal-deep)}
:focus-visible{outline:3px solid var(--saffron);outline-offset:3px;border-radius:4px}
h1,h2,h3{font-family:var(--display);line-height:1.08;letter-spacing:-.02em;margin:0 0 .5em;font-weight:700}
h1{font-size:clamp(2.3rem,5.4vw,4.4rem);font-variation-settings:"wdth" 88}h2{font-size:clamp(1.6rem,3vw,2.4rem)}h3{font-size:1.25rem;letter-spacing:-.01em}
p{margin:0 0 1.1em}.wrap{max-width:74rem;margin-inline:auto;padding-inline:clamp(1.1rem,4vw,2.5rem)}
.skip{position:absolute;inset-inline-start:-999px}.skip:focus{inset-inline-start:1rem;top:1rem;background:var(--ink);color:#fff;padding:.6rem 1rem;z-index:9}
.site-head{border-block-end:1px solid var(--line);position:sticky;top:0;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);z-index:5}
.site-head .wrap{display:flex;align-items:center;gap:1.5rem;min-height:4.2rem}
.brand{font-family:var(--display);font-weight:800;font-size:1.3rem;color:var(--ink);text-decoration:none;letter-spacing:-.03em}.brand span{color:var(--teal)}
.nav{display:flex;gap:1.3rem;margin-inline-start:auto;flex-wrap:wrap}.nav a{color:var(--ink);text-decoration:none;font-weight:500;font-size:.98rem}.nav a:hover,.nav a[aria-current]{color:var(--teal)}
.btn{display:inline-block;background:var(--teal);color:#fff;text-decoration:none;font-weight:600;padding:.85rem 1.4rem;border-radius:999px;border:2px solid var(--teal)}
.btn:hover{background:var(--teal-deep);border-color:var(--teal-deep);color:#fff}.btn.ghost{background:transparent;color:var(--teal)}.btn.ghost:hover{background:var(--mist);color:var(--teal-deep)}
.menu-btn{display:none}
section{padding-block:clamp(3rem,7vw,6rem)}section.tint{background:var(--mist)}section.dark{background:var(--ink);color:#fff}section.dark a{color:var(--saffron)}
.hero{padding-block:clamp(2.5rem,6vw,5rem) clamp(3rem,7vw,6rem)}.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(2rem,5vw,4.5rem);align-items:center}
.lede{font-size:1.2rem;color:var(--ink-2);max-width:36rem}.cta-row{display:flex;gap:.8rem;flex-wrap:wrap;margin-block-start:1.6rem}
.proofline{margin-block-start:1.8rem;font-size:.95rem;color:var(--ink-2);max-width:36rem}
.thread{background:var(--mist);border-radius:1.4rem;padding:1.2rem;display:grid;gap:.8rem;font-size:.97rem;line-height:1.5}
.bubble{padding:.85rem 1rem;border-radius:1.1rem;max-width:92%}.bubble.user{background:var(--ink);color:#fff;justify-self:end;border-end-end-radius:.3rem}
.bubble.bot{background:#fff;border:1px solid var(--line);border-end-start-radius:.3rem}.bubble.bot ul{margin:.4rem 0 0;padding-inline-start:1.1rem}
.sponsored{background:#fff;border:2px solid var(--saffron);border-radius:1.1rem;padding:.9rem 1rem;display:grid;gap:.25rem}
.sponsored .tag{justify-self:start;background:var(--saffron);color:var(--ink);font-weight:700;font-size:.78rem;padding:.12rem .55rem;border-radius:999px}
.sponsored strong{font-family:var(--display);font-size:1.05rem}.sponsored small{color:var(--ink-2)}
.thread-note{font-size:.85rem;color:var(--ink-2);margin:.6rem .3rem 0}
@media (prefers-reduced-motion:no-preference){.thread>*{opacity:0;transform:translateY(8px);animation:rise .5s ease forwards}.thread>*:nth-child(2){animation-delay:.5s}.thread>*:nth-child(3){animation-delay:1.1s}}
@keyframes rise{to{opacity:1;transform:none}}
.split{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:clamp(1.5rem,4vw,4rem)}
.facts{display:grid;gap:0;border-block-start:1px solid var(--line)}.fact{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:1.5rem;padding-block:1.2rem;border-block-end:1px solid var(--line)}
.fact b{font-family:var(--display);font-size:1.5rem;letter-spacing:-.02em}.fact span{color:var(--ink-2)}.fact a{font-size:.88rem}
section.dark .facts,section.dark .fact{border-color:rgba(255,255,255,.18)}section.dark .fact span{color:#C9D3E2}
.list-links{list-style:none;padding:0;margin:0;display:grid;gap:0;border-block-start:1px solid var(--line)}
.list-links li{border-block-end:1px solid var(--line)}.list-links a{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:1.5rem;padding-block:1.15rem;text-decoration:none;color:var(--ink)}
.list-links a:hover h3{color:var(--teal)}.list-links h3{margin:0}.list-links p{margin:0;color:var(--ink-2)}
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:1.6rem}.steps li{counter-increment:s;display:grid;grid-template-columns:3rem minmax(0,1fr);gap:1rem}
.steps li::before{content:counter(s);font-family:var(--display);font-weight:800;font-size:2rem;color:var(--teal);line-height:1}
.article-grid{display:grid;grid-template-columns:15rem minmax(0,1fr);gap:clamp(2rem,5vw,4.5rem);align-items:start}
.toc{position:sticky;top:5.5rem;font-size:.93rem;max-height:calc(100dvh - 7rem);overflow:auto}.toc ol{list-style:none;padding:0;margin:0;display:grid;gap:.55rem}.toc a{color:var(--ink-2);text-decoration:none}.toc a:hover{color:var(--teal)}.toc p{font-weight:600;margin:0 0 .7rem}
.prose{max-width:var(--measure)}.prose h2{margin-block-start:2.4em;scroll-margin-top:6rem}.prose h3{margin-block-start:1.8em}.prose li{margin-block-end:.45em}
.prose table{width:100%;border-collapse:collapse;font-size:.96rem;margin-block:1.5rem}.prose th{text-align:start;background:var(--mist);font-weight:600}.prose th,.prose td{padding:.7rem .8rem;border-block-end:1px solid var(--line);vertical-align:top}
.table-scroll{overflow-x:auto}
.ledger{background:var(--mist);border-inline-start:4px solid var(--teal);padding:1rem 1.2rem;border-radius:0 .8rem .8rem 0;font-size:.95rem;margin-block:1.5rem 2rem}.ledger p{margin:0 0 .3em}.ledger ul{margin:.3rem 0 0;padding-inline-start:1.1rem}
.crumbs{font-size:.9rem;color:var(--ink-2);margin-block-end:1.2rem}.crumbs a{color:var(--ink-2)}
.meta{color:var(--ink-2);font-size:.95rem;margin-block-end:1.5rem}
.faq details{border-block-end:1px solid var(--line);padding-block:1rem}.faq summary{cursor:pointer;font-weight:600;font-size:1.08rem}.faq details p{margin:.7rem 0 0;color:var(--ink-2)}
.tool{background:var(--mist);border-radius:1.2rem;padding:clamp(1.2rem,3vw,2rem);display:grid;gap:1rem;max-width:44rem}
.tool label{display:grid;gap:.35rem;font-weight:600;font-size:.95rem}.tool input,.tool select,.tool textarea{font:inherit;padding:.7rem .8rem;border:1px solid var(--line);border-radius:.6rem;background:#fff;color:var(--ink);width:100%}
.tool output{display:block;background:#fff;border:1px solid var(--line);border-radius:.8rem;padding:1rem;word-break:break-word}.tool .row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.site-foot{background:var(--ink);color:#C9D3E2;padding-block:3rem;font-size:.95rem}.site-foot a{color:#fff}.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem}.site-foot ul{list-style:none;padding:0;margin:0;display:grid;gap:.45rem}.site-foot h3{font-size:1rem;color:#fff}
.fine{margin-block-start:2rem;padding-block-start:1.2rem;border-block-start:1px solid rgba(255,255,255,.18);font-size:.85rem}
@media (max-width:860px){.hero-grid,.split,.article-grid,.foot-grid{grid-template-columns:1fr}.toc{position:static;max-height:none;background:var(--mist);padding:1rem;border-radius:.8rem}
.fact,.list-links a{grid-template-columns:1fr;gap:.3rem}.nav{display:none;position:absolute;inset-inline:0;top:4.2rem;background:#fff;padding:1rem 1.2rem;border-block-end:1px solid var(--line);flex-direction:column}
.nav.open{display:flex}.menu-btn{display:inline-block;margin-inline-start:auto;background:none;border:1px solid var(--line);border-radius:.6rem;padding:.5rem .8rem;font:inherit;color:var(--ink)}.tool .row{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}