:root{--bg:#f5f2eb;--paper:#fffdf8;--ink:#141a16;--muted:#5b645d;--pine:#24402f;--pine-2:#3c6650;--sand:#cfa968;--sand-2:#e9d4ac;--rust:#b5583a;--line:#e2dccd;--dark:#0f1411;--dark-2:#172019;--radius:20px;--max:1200px;--shadow:0 1px 2px rgba(20,26,22,.04),0 12px 32px -12px rgba(20,26,22,.18)}
@media (prefers-color-scheme:dark){:root{--bg:#0f1411;--paper:#161d18;--ink:#ece8df;--muted:#a1aaa3;--pine:#9cc9ad;--pine-2:#b4dcc3;--sand:#dcb978;--sand-2:#3a3324;--rust:#e08a6c;--line:#263029;--shadow:0 1px 2px rgba(0,0,0,.3),0 16px 40px -16px rgba(0,0,0,.6)}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.7 Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--pine);text-underline-offset:3px;text-decoration-thickness:1px}a:hover{color:var(--rust)}
h1,h2,h3{font-family:Fraunces,Georgia,serif;line-height:1.08;letter-spacing:-.02em;margin:0 0 .5em;font-weight:650}
h1{font-size:clamp(2.3rem,5.4vw,4.2rem)}h2{font-size:clamp(1.7rem,3.4vw,2.6rem)}h3{font-size:1.22rem;letter-spacing:-.01em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:var(--paper);padding:8px 12px;z-index:30}
.kicker{display:inline-flex;align-items:center;gap:8px;text-transform:uppercase;letter-spacing:.16em;font-size:.74rem;font-weight:600;color:var(--sand)}
.kicker::before{content:"";width:22px;height:1.5px;background:currentColor}
.lead{font-size:1.2rem;color:var(--muted);max-width:740px}
section{padding:96px 0}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-head h2{margin:.25em 0 0;max-width:720px}

/* header */
header.site{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 80%,transparent);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid color-mix(in srgb,var(--line) 70%,transparent);transition:background .3s,border-color .3s,color .3s}
header.site .wrap{display:flex;align-items:center;gap:20px;min-height:68px}
.logo{font-family:Fraunces,Georgia,serif;font-weight:700;font-size:1.3rem;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:10px;white-space:nowrap}
.logo svg{width:30px;height:30px}
nav.main{margin-left:auto;display:flex;gap:2px}
nav.main a{color:inherit;text-decoration:none;font-size:.92rem;font-weight:500;padding:8px 12px;border-radius:999px;opacity:.88}
nav.main a:hover,nav.main a[aria-current]{background:color-mix(in srgb,currentColor 10%,transparent);opacity:1;color:inherit}
.nav-cta{margin-left:6px;background:var(--ink);color:var(--bg)!important;opacity:1!important}
body.home header.site{position:fixed;left:0;right:0;background:transparent;border-color:transparent;color:#fff;backdrop-filter:none;-webkit-backdrop-filter:none}
body.home header.site .logo{color:#fff}
body.home header.site .nav-cta{background:#fff;color:#141a16!important}
body.home header.site.scrolled{background:color-mix(in srgb,var(--bg) 82%,transparent);border-color:var(--line);color:var(--ink);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px)}
body.home header.site.scrolled .logo{color:var(--ink)}
body.home header.site.scrolled .nav-cta{background:var(--ink);color:var(--bg)!important}
@media (max-width:900px){header.site .wrap{flex-wrap:wrap;gap:8px}nav.main{width:100%;margin:0 0 10px;overflow-x:auto;scrollbar-width:none}nav.main a{white-space:nowrap}.nav-cta{display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--sand);color:#141a16;font-weight:600;padding:14px 24px;border-radius:999px;text-decoration:none;margin:8px 10px 0 0;transition:transform .2s,box-shadow .2s,background .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px -10px rgba(207,169,104,.8);color:#141a16}
.btn.ghost{background:transparent;color:inherit;border:1.5px solid color-mix(in srgb,currentColor 55%,transparent)}
.btn.ghost:hover{background:color-mix(in srgb,currentColor 10%,transparent);box-shadow:none;color:inherit}
.btn.dark{background:var(--ink);color:var(--bg)}.btn.dark:hover{color:var(--bg)}
.arrow::after{content:"→";transition:transform .2s}.btn:hover .arrow::after,a:hover>.arrow::after{transform:translateX(3px)}

/* hero */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;color:#fff;overflow:hidden;background:var(--dark)}
.hero img,.hero .hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:72% 40%}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,13,10,.82) 0%,rgba(9,13,10,.5) 40%,rgba(9,13,10,0) 70%),linear-gradient(180deg,rgba(9,13,10,.35) 0%,rgba(9,13,10,0) 25%,rgba(9,13,10,0) 60%,rgba(9,13,10,.75) 100%)}
.hero .wrap{position:relative;z-index:1;padding-top:140px;padding-bottom:40px;width:100%}
.hero h1{font-size:clamp(2.5rem,5.6vw,5rem);max-width:640px;margin:.35em 0 .4em}
.hero p.sub{font-size:1.18rem;max-width:500px;opacity:.92}
.pill{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;font-weight:600;padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);backdrop-filter:blur(8px)}
.pill i{width:7px;height:7px;border-radius:50%;background:#7fd19b;box-shadow:0 0 0 4px rgba(127,209,155,.25)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin-top:56px;border-top:1px solid rgba(255,255,255,.2);padding-top:22px}
.stats div{padding-right:14px}.stats b{display:block;font-family:Fraunces,Georgia,serif;font-size:clamp(1.6rem,3vw,2.3rem);font-weight:650}.stats span{font-size:.85rem;opacity:.8}
@media (max-width:700px){.stats{grid-template-columns:repeat(2,1fr);row-gap:16px}.hero::after{background:linear-gradient(180deg,rgba(9,13,10,.35) 0%,rgba(9,13,10,.55) 45%,rgba(9,13,10,.9) 100%)}.hero img,.hero .hero-video{object-position:65% 40%}}
@media (prefers-reduced-motion:reduce){.hero .hero-video,video.bg,figure.vid video{display:none}html{scroll-behavior:auto}}

/* bento */
.bento{display:grid;gap:16px;grid-template-columns:repeat(6,1fr);grid-auto-rows:240px}
.tile{position:relative;border-radius:var(--radius);overflow:hidden;color:#fff;text-decoration:none;display:flex;flex-direction:column;justify-content:flex-end;padding:24px;isolation:isolate;box-shadow:var(--shadow)}
.tile img,.tile video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.tile::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(9,13,10,0) 30%,rgba(9,13,10,.82) 100%)}
.tile:hover img,.tile:hover video{transform:scale(1.05)}
.tile h3{font-size:1.5rem;margin:0 0 .25em;color:#fff}.tile p{margin:0;font-size:.95rem;opacity:.88;max-width:440px}
.tile .count{position:absolute;top:18px;left:18px;font-size:.75rem;font-weight:600;padding:5px 11px;border-radius:999px;background:rgba(255,255,255,.16);backdrop-filter:blur(8px)}
.tile:hover{color:#fff}
.t-a{grid-column:span 4;grid-row:span 2}.t-b{grid-column:span 2;grid-row:span 1}.t-c{grid-column:span 2;grid-row:span 1}.t-d{grid-column:span 3}.t-e{grid-column:span 3}
@media (max-width:860px){.bento{grid-template-columns:1fr;grid-auto-rows:260px}.t-a,.t-b,.t-c,.t-d,.t-e{grid-column:auto;grid-row:auto}}

/* dark band */
.band{position:relative;color:#fff;overflow:hidden;background:var(--dark)}
.band video.bg,.band img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.band::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,13,10,.9),rgba(9,13,10,.35))}
.band .wrap{position:relative;z-index:1}.band h2{color:#fff;max-width:640px}.band p{max-width:520px;opacity:.88}

/* cards */
.grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:var(--ink);display:flex;flex-direction:column;overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
a.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent;color:var(--ink)}
.card .img{overflow:hidden;aspect-ratio:16/10}.card .img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
a.card:hover .img img{transform:scale(1.04)}
.card .cb{padding:18px 22px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.card h3{margin:0;font-size:1.18rem}.card p{color:var(--muted);margin:0;font-size:.95rem;line-height:1.55}
.meta-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;font-size:.76rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-weight:600}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:currentColor}
.scroller{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(300px,360px);gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px;scrollbar-width:thin}
.scroller>*{scroll-snap-align:start}
.steps{display:grid;gap:20px;grid-template-columns:repeat(3,1fr);counter-reset:s}
.steps .card{counter-increment:s}.steps .card .cb::before{content:"0" counter(s);font-family:Fraunces,Georgia,serif;font-size:2.2rem;color:var(--sand);line-height:1}
@media (max-width:860px){.steps{grid-template-columns:1fr}}
.split{display:grid;gap:56px;grid-template-columns:1fr 1.1fr;align-items:center}
@media (max-width:860px){.split{grid-template-columns:1fr;gap:28px}}
.stack{position:relative}.stack .a{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.stack .b{position:absolute;right:-18px;bottom:-34px;width:46%;border-radius:16px;overflow:hidden;border:6px solid var(--bg);box-shadow:var(--shadow)}
@media (max-width:860px){.stack .b{right:10px;bottom:-24px}}
.checks{list-style:none;padding:0;margin:20px 0}.checks li{padding-left:30px;position:relative;margin:10px 0}
.checks li::before{content:"";position:absolute;left:0;top:.45em;width:16px;height:16px;border-radius:50%;background:var(--pine);mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M6.5 11.2 3.3 8l1.1-1.1 2.1 2.1 5.1-5.1 1.1 1.1z'/%3E%3C/svg%3E") center/16px no-repeat,linear-gradient(#000,#000)}
.cta-card{border-radius:28px;padding:56px;background:linear-gradient(135deg,var(--pine),#1b2e22);color:#fff;display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;overflow:hidden;position:relative}
.cta-card h2{color:#fff}.cta-card p{opacity:.85}
.grade-demo{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.grade-demo span{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:14px;text-align:center;font-family:Fraunces,Georgia,serif;font-size:1.3rem}
.grade-demo small{display:block;font-family:Inter,sans-serif;font-size:.72rem;opacity:.7;letter-spacing:.06em;text-transform:uppercase}
@media (max-width:860px){.cta-card{grid-template-columns:1fr;padding:32px}}

/* page head & hubs */
.pagehead{padding-top:64px;padding-bottom:28px}
.hub-hero{position:relative;border-radius:28px;overflow:hidden;color:#fff;min-height:440px;display:flex;align-items:flex-end;margin-top:24px;background:var(--dark)}
.hub-hero img,.hub-hero video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hub-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(9,13,10,.1) 20%,rgba(9,13,10,.85) 100%)}
.hub-hero .in{position:relative;z-index:1;padding:40px}
.hub-hero h1{color:#fff;margin:.3em 0}.hub-hero p{max-width:640px;opacity:.9;font-size:1.12rem;margin:0}
@media (max-width:700px){.hub-hero{min-height:380px;border-radius:20px}.hub-hero .in{padding:24px}}
.feature{display:grid;grid-template-columns:1.25fr 1fr;border-radius:var(--radius);overflow:hidden;background:var(--paper);border:1px solid var(--line);text-decoration:none;color:var(--ink);margin-bottom:24px;transition:box-shadow .25s,transform .25s}
.feature:hover{box-shadow:var(--shadow);transform:translateY(-3px);color:var(--ink)}
.feature .img img{width:100%;height:100%;object-fit:cover;min-height:300px}.feature .cb{padding:36px;display:flex;flex-direction:column;gap:12px;justify-content:center}
.feature h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin:0}
@media (max-width:860px){.feature{grid-template-columns:1fr}.feature .cb{padding:24px}}
.guides{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.guides li{background:var(--paper);border:1px dashed var(--line);border-radius:14px;padding:16px 18px;display:flex;gap:14px;justify-content:space-between;align-items:baseline;flex-wrap:wrap}
.guides .t{font-weight:600}.guides .d{color:var(--muted);font-size:.93rem;flex-basis:100%}
.tag{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;border:1px solid var(--line);border-radius:999px;padding:3px 10px;color:var(--muted);font-weight:600}
.tag.live{border-color:transparent;background:color-mix(in srgb,var(--pine) 12%,transparent);color:var(--pine)}

/* article */
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--sand),var(--rust));z-index:40}
.art-head{padding-top:48px;max-width:900px}
.art-head h1{font-size:clamp(2.2rem,4.8vw,3.6rem)}
.crumbs{font-size:.85rem;color:var(--muted);margin-bottom:18px}.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--rust)}
.meta{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:.92rem;margin:0 0 30px}
.meta img{border-radius:50%;width:44px;height:44px;object-fit:cover;flex-shrink:0}
.meta strong{color:var(--ink);font-weight:600}
.hero-fig{margin:0 0 8px}.hero-fig img{border-radius:24px;width:100%;aspect-ratio:21/9;object-fit:cover}
@media (max-width:700px){.hero-fig img{aspect-ratio:4/3;border-radius:16px}}
.art-grid{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:64px;align-items:start;margin-top:36px}
@media (max-width:1000px){.art-grid{grid-template-columns:minmax(0,1fr)}.toc{display:none}}
.toc{position:sticky;top:96px;font-size:.88rem;border-left:1px solid var(--line);padding-left:18px}
.toc strong{display:block;text-transform:uppercase;letter-spacing:.12em;font-size:.72rem;color:var(--muted);margin-bottom:10px}
.toc a{display:block;color:var(--muted);text-decoration:none;padding:5px 0;line-height:1.35}
.toc a.on{color:var(--ink);font-weight:600}
.glance{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;margin:0 0 36px;box-shadow:var(--shadow)}
.glance .row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.glance h2{font-size:1.15rem;margin:0 0 6px;font-family:Inter,sans-serif;letter-spacing:0;text-transform:uppercase;font-size:.78rem;color:var(--sand);font-weight:700;letter-spacing:.14em}
.glance ul{margin:0;padding:0;list-style:none}.glance li{position:relative;padding-left:28px;margin:10px 0;line-height:1.55}
.glance li::before{content:"";position:absolute;left:0;top:.5em;width:14px;height:14px;border-radius:4px;background:var(--sand)}
.prose{max-width:740px;font-size:1.06rem}.prose h2{margin-top:1.9em;scroll-margin-top:90px}.prose h3{margin-top:1.5em}
.prose p,.prose li{color:color-mix(in srgb,var(--ink) 88%,var(--muted))}
.tbl{overflow-x:auto;margin:20px 0;border-radius:14px;border:1px solid var(--line)}
table{border-collapse:collapse;width:100%;background:var(--paper);font-size:.95rem}.tbl table{min-width:520px}
th,td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{font-size:.76rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);background:color-mix(in srgb,var(--line) 35%,var(--paper))}
tr:last-child td{border-bottom:0}tr.hit td{background:color-mix(in srgb,var(--sand) 25%,transparent);font-weight:600}
.note{background:color-mix(in srgb,var(--sand) 12%,var(--paper));border:1px solid color-mix(in srgb,var(--sand) 35%,transparent);padding:16px 20px;border-radius:14px;color:var(--ink);font-size:.95rem;margin:24px 0}
figure{margin:36px 0}figure img,figure video{border-radius:16px;width:100%;display:block}
figure.vid video{aspect-ratio:16/9;object-fit:cover;background:var(--line)}
figcaption{font-size:.8rem;color:var(--muted);margin-top:10px}
.sources{font-size:.9rem;color:var(--muted)}.sources a{word-break:break-word}
.author{display:flex;gap:20px;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin:48px 0 10px}
.author img{border-radius:50%;width:92px;height:92px;object-fit:cover;flex-shrink:0}.author p{margin:.3em 0 0;color:var(--muted);font-size:.95rem}

/* converter & misc */
.conv{display:flex;gap:12px;flex-wrap:wrap;align-items:end;margin:18px 0 26px}
.conv label{display:flex;flex-direction:column;font-size:.85rem;color:var(--muted);gap:4px}
select{font:inherit;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--paper);color:var(--ink);min-width:150px}
.out{font-family:Fraunces,Georgia,serif;font-size:2.4rem}
.caption{font-size:.8rem;color:var(--muted);margin-top:8px}
.portrait{border-radius:var(--radius);overflow:hidden}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}
.no-js .reveal{opacity:1;transform:none}

/* footer */
footer.site{background:var(--dark);color:#c9cfc9;padding:72px 0 32px;margin-top:0;font-size:.92rem}
footer.site .cols{display:grid;gap:32px;grid-template-columns:1.6fr repeat(3,1fr)}
@media (max-width:800px){footer.site .cols{grid-template-columns:1fr 1fr}}
footer.site .logo{color:#fff}footer.site a{color:#c9cfc9;text-decoration:none}footer.site a:hover{color:var(--sand)}
footer.site strong{color:#fff;display:block;margin-bottom:10px;font-size:.8rem;text-transform:uppercase;letter-spacing:.12em}
footer.site ul{list-style:none;padding:0;margin:0}footer.site li{margin:6px 0}
footer.site .base{border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding-top:24px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.82rem;opacity:.75}