/*! STL Emboss — © 2026 stlemboss.com. All rights reserved. */






:root {
  color-scheme: dark;
  --bg: #0e1116; --panel: #141922; --ink: #dfe3ea; --dim: #a0a9b9;
  --accent: #3f7cb5; --accent-deep: #2f5d8a; --link: #7fb3e0;
  --line: rgba(190, 212, 236, .14); --btn-line: rgba(190, 212, 236, .24);
  --facet-lit: rgba(222, 236, 255, .22);
  --glow: rgba(127, 179, 224, .55);
  --lift: inset 0 1px 0 rgba(255, 255, 255, .06), 0 18px 40px -18px rgba(0, 0, 0, .8);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
       font: 17px/1.65 system-ui, -apple-system, sans-serif; -webkit-text-size-adjust: 100%; }



body::before { content: ''; position: fixed; inset: 0; z-index: -2;
               background: var(--bg) url(ground.jpg) center / cover no-repeat; }
body::after { content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none;
              background: radial-gradient(58% 42% at 50% 0%, rgba(150, 192, 236, .16), transparent 100%),
                          radial-gradient(120% 95% at 50% 45%, transparent 55%, rgba(3, 6, 11, .5) 100%); }

a { color: var(--link); text-underline-offset: .18em;
    text-decoration-color: color-mix(in srgb, var(--link) 45%, transparent); }
a:hover { text-decoration-color: currentColor; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -200vw; top: .5rem; z-index: 1; padding: .5rem .8rem;
        border-radius: 8px; background: var(--panel); color: var(--ink); }
.skip:focus { left: .5rem; }


header { max-width: 46rem; margin: 0 auto; padding: 1rem 1rem .75rem; }
#home { display: inline-block; }
#home img { display: block; height: 26px; width: auto; transition: filter .15s; }
#home:hover img, #home:focus-visible img { filter: brightness(0) invert(1); }



.sheet { width: calc(100% - 2rem); max-width: 44rem; margin: 0 auto 3rem; padding: 2.75rem 3rem 1.5rem;
         border: 1px solid rgba(200, 225, 255, .16); border-top-color: rgba(255, 234, 204, .3);
         border-radius: 16px;
         background: linear-gradient(155deg, rgba(120, 160, 215, .12), transparent 40%, rgba(232, 172, 110, .08)),
                     color-mix(in srgb, var(--panel) 90%, transparent);
         box-shadow: inset 1px 1px 0 rgba(255, 228, 190, .1), 0 30px 80px -20px rgba(0, 0, 0, .7);
         -webkit-backdrop-filter: blur(24px) saturate(1.3); backdrop-filter: blur(24px) saturate(1.3); }

.crumbs ol { list-style: none; margin: 0 0 1.25rem; padding: 0; display: flex; flex-wrap: wrap;
             gap: .4rem; font-size: 14px; color: var(--dim); }
.crumbs li + li::before { content: "›"; margin-right: .4rem; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

h1 { font-size: 40px; line-height: 1.15; letter-spacing: -.02em; font-weight: 700;
     margin: 0 0 .9rem; text-wrap: balance; }
.lead { font-size: 20px; line-height: 1.5; margin: 0 0 1.5rem; color: #cdd3de; text-wrap: pretty; }
h2 { font-size: 22px; line-height: 1.3; letter-spacing: -.01em; font-weight: 650; margin: 2.75rem 0 .6rem; }
p { margin: 0 0 1rem; }
.note { color: var(--dim); font-size: 15px; }
strong { font-weight: 650; color: #eef1f6; }


.btn { display: inline-flex; align-items: center; min-height: 48px; padding: 0 1.25rem;
       border-radius: 10px; border: 1px solid color-mix(in srgb, var(--accent) 75%, transparent);
       background: linear-gradient(#33648f, var(--accent-deep)); color: #fff;
       font-weight: 600; font-size: 16px; line-height: 1; text-decoration: none;
       box-shadow: inset 0 1px 0 rgba(255, 255, 255, .16), 0 2px 6px -1px rgba(0, 0, 0, .45);
       transition: filter .15s; }
.btn:hover { filter: brightness(1.12); }

kbd, .chip { font: inherit; font-size: 15px; padding: .05em .4em; border-radius: 5px;
             border: 1px solid var(--btn-line); background: rgba(255, 255, 255, .05);
             box-shadow: inset 0 -1px 0 rgba(0, 0, 0, .35); white-space: nowrap; }


code { font: 15px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; }
pre { margin: 0 0 1rem; padding: .9rem 1.1rem; overflow-x: auto; border: 1px solid var(--line); border-radius: 10px;
      background: rgba(0, 0, 0, .28); }
pre code { font-size: 14px; overflow-wrap: normal; }
main ul:not(.guides) { margin: 0 0 1rem; padding-left: 1.25rem; }

figure { margin: 2rem 0; }
figure img { display: block; width: 100%; height: auto; border-radius: 12px;
             border: 1px solid var(--line); box-shadow: var(--lift); }
figure video { display: block; width: 100%; height: auto; border-radius: 12px;
               border: 1px solid var(--line); box-shadow: var(--lift); background: var(--bg); }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.pair figcaption { grid-column: 1 / -1; margin-top: 0; }
figcaption { margin-top: .6rem; color: var(--dim); font-size: 14px; line-height: 1.5; }



.steps { list-style: none; margin: 2.75rem 0 0; padding: 0; counter-reset: step; }
.steps > li { position: relative; counter-increment: step; padding: 0 0 1.25rem 3.25rem; }
.steps > li:last-child { padding-bottom: 0; }
.steps > li:last-child > :last-child { margin-bottom: 0; }
.steps > li::before { content: counter(step); position: absolute; left: 0; top: 0;
                      width: 2.25rem; height: 2.25rem; border-radius: 50%; display: grid; place-items: center;
                      font-size: 15px; font-weight: 650; line-height: 1; color: #fff;
                      background: linear-gradient(#33648f, var(--accent-deep));
                      border: 1px solid color-mix(in srgb, var(--accent) 75%, transparent);
                      box-shadow: inset 0 1px 0 rgba(255, 255, 255, .16); }
.steps > li:not(:last-child)::after { content: ''; position: absolute; left: calc(1.125rem - .5px);
                                      top: 2.6rem; bottom: .35rem; width: 1px; background: var(--line); }
.steps h2 { margin: .25rem 0 .6rem; }
.steps figure { margin: 1.25rem 0 1rem; }


.fact { display: flex; gap: .85rem; margin: 1.25rem 0 1.5rem; padding: .9rem 1.1rem;
        border: 1px solid var(--line); border-top-color: var(--facet-lit); border-radius: 12px;
        background: rgba(255, 255, 255, .03); font-size: 16px; line-height: 1.55; }
.fact svg { flex: none; width: 16px; height: 16px; margin-top: .22em; color: var(--dim); }
.fact p { margin: 0; }


.guides { list-style: none; margin: 2rem 0; padding: 0; display: grid;
          grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1rem; }
.card { display: flex; flex-direction: column; height: 100%; color: inherit; text-decoration: none;
        border: 1px solid var(--line); border-top-color: var(--facet-lit); border-radius: 12px;
        background: rgba(255, 255, 255, .025); overflow: hidden;
        transition: border-color .15s, box-shadow .2s; }
.card:hover, .card:focus-visible { border-color: color-mix(in srgb, var(--glow) 70%, transparent);
                                   box-shadow: 0 0 0 1px color-mix(in srgb, var(--glow) 40%, transparent), 0 0 18px -4px var(--glow); }
.card img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover;
            border-bottom: 1px solid var(--line); }
.card b { display: block; padding: .9rem 1rem 0; font-size: 18px; line-height: 1.3; font-weight: 650; }
.card span { display: block; padding: .35rem 1rem 1rem; color: var(--dim); font-size: 15px; line-height: 1.5; }


.next { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: .75rem; margin: 2.25rem 0 1rem; }
.next a { position: relative; display: block; padding: .75rem 2.5rem .75rem 1rem; border: 1px solid var(--line); border-radius: 10px;
          color: var(--ink); text-decoration: none; font-weight: 600; font-size: 16px;
          transition: border-color .15s; }
.next a::after { content: "→"; position: absolute; right: 1rem; top: 50%; transform: translateY(-50%);
                 color: var(--link); font-weight: 400; }
.next a:hover { border-color: var(--facet-lit); }
.next small { display: block; color: var(--dim); font-size: 13px; font-weight: 400; margin-bottom: .1rem; }
.cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem;
       margin: 1rem 0 0; padding: 1.25rem; border-radius: 12px;
       border: 1px solid var(--line); border-top-color: rgba(255, 234, 204, .3);
       background: linear-gradient(120deg, rgba(120, 160, 215, .12), rgba(232, 172, 110, .08)); }
.cta p { margin: 0; flex: 1 1 16rem; }
.cta b { display: block; font-size: 18px; font-weight: 650; }
.cta span { display: block; margin-top: .15rem; color: var(--dim); font-size: 15px; line-height: 1.5; }

footer { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--line);
         color: var(--dim); font-size: 13px; }

@media (max-width: 640px) {
  header { padding: .75rem 1.25rem .5rem; }
  .sheet { width: calc(100% - 1rem); margin: 0 auto 1rem; padding: 1.5rem 1.25rem 1rem; border-radius: 14px; }
  h1 { font-size: 30px; }
  .lead { font-size: 18px; }
  h2 { font-size: 20px; margin-top: 2.25rem; }
  .steps > li { padding-left: 2.75rem; }
  .steps > li::before { width: 2rem; height: 2rem; font-size: 14px; }
  .steps > li:not(:last-child)::after { left: calc(1rem - .5px); top: 2.35rem; }
  .btn { width: 100%; justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}