/* OCTO overview page: docs layout with the shared section nav. A quiet title with the key art,
   then image led tiles for the six tasks, the kit in three parts, and the downloads shelf. */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:var(--bg,#02040A);color:var(--fg,#EAF0FF);font:400 16px/1.55 var(--font-ui,'Inter',system-ui,sans-serif);overflow-x:hidden;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(50% 45% at 82% -6%,rgba(var(--emit-plasma),.12),transparent 70%),radial-gradient(40% 40% at 10% 0%,rgba(var(--emit-cyan),.035),transparent 70%)}
a{color:inherit}
.skip{position:absolute;left:-999px;top:8px;z-index:2000;background:#fff;color:#000;padding:8px 12px;border-radius:8px}
.skip:focus{left:8px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--cyan-500);box-shadow:0 0 8px rgba(var(--emit-cyan),.9)}

/* Layout */
.doc{display:grid;grid-template-columns:264px minmax(0,1fr);max-width:1440px;margin:0 auto}
/* The rail scrolls inside itself under its filter field (system/nav.css), so the column only frames it */
.doc__side{position:sticky;top:64px;align-self:start;height:calc(100vh - 64px);overflow:hidden;padding:0;border-right:1px solid var(--stroke-1)}
.doc__main{min-width:0;padding:0 clamp(16px,4.4vw,64px)}

/* Page title: large and quiet, the key art feathered into the abyss on the right */
.page-head{position:relative;isolation:isolate;padding:104px 0 0;min-height:0}
.page-head__text{position:relative;z-index:1;max-width:720px}
.keyart{position:absolute;z-index:0;top:40px;right:0;width:min(30%,300px);height:300px;opacity:.62;margin:0;pointer-events:none;
  -webkit-mask-image:radial-gradient(closest-side at 54% 50%,#000 52%,transparent 100%);mask-image:radial-gradient(closest-side at 54% 50%,#000 52%,transparent 100%)}
.keyart img{display:block;width:100%;height:100%;object-fit:cover;object-position:50% 46%}
.release{display:inline-flex;align-items:center;gap:9px;margin:0 0 22px;font:500 13px/1 var(--font-ui);letter-spacing:.02em;color:var(--fg-2)}
h1{margin:0;font:700 clamp(40px,5.3vw,76px)/1.02 var(--font-display);letter-spacing:-.042em}
.page-sub{margin:24px 0 0;max-width:620px;font-size:clamp(17px,1.5vw,21px);line-height:1.5;color:rgba(234,240,255,.78);letter-spacing:-.006em}
.act{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px 0 14px;border-radius:999px;border:1px solid var(--stroke-2);
  background:rgba(255,255,255,.025);color:var(--fg);font:500 13.5px/1 var(--font-ui);text-decoration:none;cursor:pointer;transition:background .2s,border-color .2s,color .2s}
.act:hover{background:rgba(255,255,255,.07);border-color:rgba(234,240,255,.32)}
.act svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.act:focus-visible{outline:2px solid var(--cyan-500);outline-offset:2px}
.block__head .toast{position:absolute;right:0;top:100%;max-width:100%;margin:6px 0 0;padding:0 2px;font-size:13px;line-height:16px;color:var(--cyan-300);background:var(--bg)}
.block__head .toast:empty{display:none}

/* Blocks */
#tasks{padding-top:64px}
.block{padding:52px 0 8px}
.block__head{margin-bottom:28px}
.block__head h2{margin:0;font:700 clamp(26px,2.3vw,32px)/1.15 var(--font-display);letter-spacing:-.022em}
.block__head p{margin:10px 0 0;max-width:680px;font-size:16px;line-height:1.5;color:rgba(234,240,255,.74)}
.block__head p a{color:var(--plasma-300);text-decoration:underline;text-decoration-color:rgba(199,166,255,.4);text-underline-offset:3px}
.block__head p a:hover{text-decoration-color:currentColor}
/* A section head that carries one tool: the tool sits level with the text it serves */
.block__head--tool{position:relative;display:flex;align-items:flex-end;justify-content:space-between;gap:16px 28px;flex-wrap:wrap}
.block__head--tool .act{flex:none}

/* Shared art panel: dark glass lit from below in the tile's own hue */
.task__art,.kit__art{position:relative;display:block;overflow:hidden;aspect-ratio:16/9;border-radius:16px;
  background:radial-gradient(75% 85% at 50% 108%,rgba(var(--c),.34),transparent 72%),radial-gradient(60% 50% at 50% -10%,rgba(var(--c),.10),transparent 70%),linear-gradient(180deg,#0B1124,#060914);
  border:1px solid rgba(var(--c),.22);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 18px 40px -24px rgba(0,0,0,.8);transition:border-color .3s,box-shadow .3s}
.task__art svg,.kit__art svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible;filter:drop-shadow(0 0 16px rgba(var(--c),.4));transition:transform .5s var(--ease-out)}

/* Task tiles */
.tasks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px 22px;margin:0;padding:0;list-style:none}
.task{position:relative;display:flex;flex-direction:column;height:100%;text-decoration:none;container-type:inline-size;border-radius:16px}
.task b{margin-top:16px;font:600 17px/1.3 var(--font-ui);letter-spacing:-.01em;color:var(--fg);transition:color .2s}
.task__d{margin-top:6px;font-size:14.5px;line-height:1.5;color:rgba(234,240,255,.72)}
.task code{position:absolute;left:12px;top:calc(56.25cqw - 36px);padding:5px 8px;border-radius:7px;font:500 11.5px/1.2 var(--font-mono);color:rgba(234,240,255,.82);
  background:rgba(2,4,10,.6);border:1px solid rgba(255,255,255,.08)}
.task:hover .task__art{border-color:rgba(var(--c),.55);box-shadow:inset 0 1px 0 rgba(255,255,255,.1),0 0 0 1px rgba(var(--c),.18),0 24px 48px -24px rgba(var(--c),.45)}
.task:hover .task__art svg{transform:scale(1.04)}
.task:hover b{color:#fff}
.task:focus-visible{outline:none}
.task:focus-visible .task__art{outline:2px solid var(--cyan-500);outline-offset:3px}

/* Illustration parts */
.mix circle{fill-opacity:.62;mix-blend-mode:screen}
.hair{fill:none;stroke:rgba(255,255,255,.34);stroke-width:1}
.guide{fill:none;stroke:rgba(234,240,255,.16);stroke-width:1;stroke-dasharray:3 4}
.base{fill:none;stroke:rgba(234,240,255,.32);stroke-width:1}
.aa{font:700 96px var(--font-display);letter-spacing:-.03em}
.spec{font:500 10px var(--font-mono);fill:rgba(234,240,255,.5)}
.card{fill:rgba(255,255,255,.05);stroke-width:1.2}
.lbl{fill:rgba(234,240,255,.3)}
.live{fill:rgba(198,243,107,.22);stroke:rgba(198,243,107,.6);stroke-width:1}
.num{font:700 34px var(--font-display);fill:#EAF0FF;letter-spacing:-.02em}
.spark{fill:none;stroke:#3FD8FF;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.tip{fill:#3FD8FF}
.line{fill:none;stroke:#C6F36B;stroke-width:2.6;stroke-linecap:round}
.pt{fill:#060914;stroke:#C6F36B;stroke-width:2}
.pt--hot{fill:#C6F36B}
.f-top{fill:rgba(199,166,255,.34)}
.f-left{fill:rgba(139,92,255,.3)}
.f-right{fill:rgba(63,216,255,.14)}
.rim{fill:none;stroke:#3FD8FF;stroke-width:2.2;stroke-linejoin:round}
.win{fill:rgba(255,255,255,.04);stroke:rgba(255,255,255,.22);stroke-width:1}
.dots{fill:rgba(234,240,255,.35)}
.hl{fill:rgba(234,240,255,.85)}
.tx{fill:rgba(234,240,255,.3)}
.globe{fill:none;stroke:rgba(63,216,255,.42);stroke-width:1}
.orbit{fill:none;stroke:rgba(199,166,255,.7);stroke-width:1.4}
.sat{fill:#C7A6FF}

/* Kit: three parts, each with one picture and its pages */
.kit{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.kit__grp{display:flex;flex-direction:column;padding:10px 10px 6px;border-radius:22px;border:1px solid var(--stroke-1);
  background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.008))}
.kit__art{border-radius:14px}
.kit__art--img{background:#060914}
.kit__art--img img{display:block;width:100%;height:100%;object-fit:cover;object-position:50% 30%}
.kit h3{margin:18px 12px 4px;font:600 12px/1 var(--font-ui);letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3)}
.kit__grp > a{position:relative;display:block;margin:0 2px;padding:14px 36px 14px 10px;border-radius:12px;text-decoration:none;transition:background .2s}
.kit__grp > a + a::before{content:"";position:absolute;left:10px;right:10px;top:0;border-top:1px solid var(--stroke-1)}
.kit__grp > a::after{content:"";position:absolute;right:16px;top:20px;width:7px;height:7px;border-top:1.5px solid var(--fg-3);border-right:1.5px solid var(--fg-3);transform:rotate(45deg);transition:border-color .2s,transform .2s}
.kit__grp > a:hover{background:rgba(255,255,255,.04)}
.kit__grp > a:hover::after{border-color:var(--plasma-300);transform:translateX(2px) rotate(45deg)}
.kit a b{display:block;font-weight:600;font-size:15.5px;color:var(--fg)}
.kit a span{display:block;margin-top:4px;font-size:13.5px;line-height:1.45;color:rgba(234,240,255,.72)}

/* Downloads shelf */
.dl{margin:0;padding:6px;list-style:none;border:1px solid var(--stroke-1);border-radius:20px;background:linear-gradient(180deg,rgba(255,255,255,.025),rgba(255,255,255,.006))}
.dl li + li a::before{content:"";position:absolute;left:68px;right:14px;top:0;border-top:1px solid var(--stroke-1)}
.dl a{position:relative;display:grid;grid-template-columns:44px minmax(0,1fr) auto 34px;align-items:center;gap:16px;padding:12px 10px 12px 12px;border-radius:14px;text-decoration:none;transition:background .2s}
.dl a:hover{background:rgba(255,255,255,.04)}
.dl__type{display:grid;place-items:center;width:44px;height:44px;border-radius:11px;font:600 10.5px/1 var(--font-mono);font-style:normal;letter-spacing:.04em;color:var(--plasma-300);
  background:rgba(var(--emit-plasma),.09);border:1px solid rgba(var(--emit-plasma),.24)}
.dl__txt{min-width:0}
.dl b{display:block;font-weight:600;font-size:15.5px}
.dl__txt span{display:block;margin-top:2px;font-size:14px;color:rgba(234,240,255,.72)}
.dl em{font:500 12.5px/1 var(--font-mono);font-style:normal;color:var(--fg-3);white-space:nowrap}
.dl__ico{justify-self:center;width:34px;height:34px;padding:9px;border-radius:50%;border:1px solid var(--stroke-2);fill:none;stroke:var(--fg-2);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;transition:background .2s,stroke .2s,border-color .2s}
.dl a:hover .dl__ico{background:var(--fg);border-color:var(--fg);stroke:var(--abyss-1000)}

.foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:88px;padding:28px 0 40px;border-top:1px solid var(--stroke-1);font-size:13px;color:var(--fg-3)}
.kit__grp > a:focus-visible,.dl a:focus-visible,.block__head p a:focus-visible{outline:2px solid var(--cyan-500);outline-offset:2px}

@media (max-width:1200px){
  .keyart{width:min(28%,260px);height:260px;opacity:.55}
  .page-head__text{max-width:min(720px,70%)}
  .kit{grid-template-columns:minmax(0,1fr)}
  .kit__grp{display:grid;grid-template-columns:minmax(0,42%) minmax(0,1fr);grid-auto-rows:min-content;column-gap:18px;padding:10px}
  .kit__art{grid-row:1/span 4}
  .kit h3{margin:12px 12px 4px}
}
@media (max-width:1000px){
  .doc{display:block}
  .doc__side{display:none}
}
@media (max-width:860px){
  .keyart{display:none}
  .page-head{min-height:0}
  .page-head__text{max-width:none}
  .tasks{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .doc__main{padding:0 24px}
  .page-head{padding:48px 0 0}
  h1{font-size:40px;line-height:1.05;letter-spacing:-.035em}
  .page-sub{margin-top:16px;font-size:17px;line-height:1.5;color:rgba(234,240,255,.8)}
  .block__head p{font-size:16px}
  .act{height:36px;padding:0 14px 0 12px;font-size:13px}
  .block{padding-top:44px}
  #tasks{padding-top:48px}
  .block__head{margin-bottom:18px}
  .block__head--tool{margin-bottom:26px}
  .block__head .toast{left:0;right:auto}
  .tasks{grid-template-columns:minmax(0,1fr);gap:0}
  .tasks li + li .task::before{content:"";position:absolute;left:104px;right:0;top:0;border-top:1px solid var(--stroke-1)}
  .task{display:grid;grid-template-columns:88px minmax(0,1fr);grid-template-rows:auto auto 1fr;column-gap:16px;padding:14px 0;container-type:normal}
  .task__art{grid-row:1/4;aspect-ratio:1;border-radius:18px;align-self:start}
  .task__art svg{transform:none}
  .task:hover .task__art svg{transform:scale(1.04)}
  .task b{margin-top:2px;font-size:16px}
  .task__d{margin-top:3px;font-size:15px}
  .task code{display:none}
  .kit__grp{display:flex;padding:8px 8px 4px}
  .kit__art{aspect-ratio:2/1}
  .kit h3{margin:16px 10px 4px}
  .dl{padding:4px}
  .dl a{grid-template-columns:40px minmax(0,1fr) 30px;gap:12px;padding:12px 8px}
  .dl__type{width:40px;height:40px}
  .dl em{grid-column:2;grid-row:2;margin-top:-6px}
  .dl__ico{grid-column:3;grid-row:1/3;width:30px;height:30px;padding:7px}
  .dl li + li a::before{left:60px;right:10px}
  .foot{flex-direction:column;gap:6px;margin-top:64px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}