:root {
  --canvas: #F7F8F6;
  --paper: #FFFFFF;
  --steel: #EEF0EE;
  --ink: #1D252C;
  --ink-2: #3F4851;
  --grey: #8A949E;
  --line: #E3E6E4;
  --line-2: #D3D8D5;
  --blue: #1E5E45;
  --blue-deep: #164634;
  --blueprint: #DCEBE2;
  --amber: #F0B45D;
  --amber-deep: #B97A1C;
  --red: #D4533F;
  --green: #3E9B5F;

  --display: "Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --body: "DM Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --gutter: clamp(16px, 4vw, 56px);
  --maxw: 1320px;
  --ease: cubic-bezier(.2, .8, .2, 1);
}

* { box-sizing: border-box; }
html { background: var(--canvas); scroll-behavior: smooth; }
body {
  margin: 0; background: var(--canvas); color: var(--ink);
  font: 400 1.0625rem/1.6 var(--body);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, canvas { max-width: 100%; display: block; }
[hidden] { display: none !important; }
a { color: inherit; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 8px; }
.mono { font-family: var(--mono); font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; }
.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px; height: 50px; padding-inline: 24px;
  border-radius: 10px; font: 600 1rem/1 var(--body); text-decoration: none; cursor: pointer;
  border: 1.5px solid transparent; transition: transform .25s var(--ease), background .25s, box-shadow .25s, border-color .25s;
}
.btn svg { width: 18px; height: 18px; }
.btn-blue { background: var(--blue); color: #fff; box-shadow: 0 1px 0 rgba(255,255,255,.25) inset, 0 10px 24px -12px rgba(30,94,69,.8); }
.btn-blue:hover { background: var(--blue-deep); transform: translateY(-1px); }
.btn-line { background: var(--paper); color: var(--ink); border-color: var(--ink); }
.btn-line:hover { transform: translateY(-1px); box-shadow: 0 8px 20px -14px rgba(29,37,44,.6); }
.btn-sm { height: 40px; padding-inline: 18px; font-size: .9375rem; border-radius: 9px; }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  background: rgba(247,248,246,.82); backdrop-filter: saturate(160%) blur(10px); -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid transparent; transition: border-color .3s;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav-row { display: flex; align-items: center; gap: 40px; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 700 1.375rem/1 var(--display); letter-spacing: -.02em; }
.brand svg { width: 34px; height: 34px; color: var(--ink); }
.brand.small { font-size: 1.125rem; }
.brand.small svg { width: 26px; height: 26px; }
.nav-links { display: flex; gap: 34px; margin-left: auto; font-size: .9375rem; font-weight: 500; }
.nav-links a { text-decoration: none; color: var(--ink-2); transition: color .2s; }
.nav-links a:hover { color: var(--ink); }
@media (max-width: 860px) { .nav-links { display: none; } .nav-row { justify-content: space-between; } }

/* ---------- stage (hero + relay) ---------- */
.stage { position: relative; height: 830vh; }
.stage-sticky { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; }
#bench { position: absolute; inset: 0; width: 100%; height: 100%; }
.stage-shade {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(62% 58% at 14% 22%, rgba(247,248,246,.97) 0%, rgba(247,248,246,.85) 45%, rgba(247,248,246,0) 78%),
    linear-gradient(to bottom, rgba(247,248,246,.9) 0, rgba(247,248,246,0) 110px);
  transition: opacity .6s;
}
.stage.relaying .stage-shade { opacity: .25; }
.hero-copy { position: relative; z-index: 2; padding-top: clamp(104px, 15vh, 150px); pointer-events: none; transition: opacity .5s var(--ease), transform .5s var(--ease); }
.hero-copy > * { pointer-events: auto; }
.hero-copy.gone { opacity: 0; transform: translateY(-24px); }
.hero-copy.gone > * { pointer-events: none; }
.eyebrow { color: var(--grey); }
.hero-copy .eyebrow { margin-bottom: 22px; }
@keyframes rise { from { opacity: 0; transform: translateY(26px); } }
.hero-copy .eyebrow, .hero-copy h1, .hero-copy .lede, .hero-copy .cta-row { animation: rise .9s var(--ease) both; }
.hero-copy h1 { animation-delay: .06s; } .hero-copy .lede { animation-delay: .16s; } .hero-copy .cta-row { animation-delay: .24s; }
h1 {
  font: 800 clamp(2.6rem, 5.4vw, 5.5rem)/.94 var(--display); letter-spacing: -.04em;
  font-variation-settings: "opsz" 96;
}
.lede { margin-top: 26px; max-width: 34ch; font-size: clamp(1.0625rem, 1.4vw, 1.3125rem); line-height: 1.5; color: var(--ink-2); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.cta-row.center { justify-content: center; }

.tip {
  position: absolute; z-index: 4; pointer-events: none; transform: translate(14px, 14px);
  background: var(--paper); color: var(--ink); border: 1px solid var(--line-2); border-radius: 10px;
  padding: 10px 12px; box-shadow: 0 16px 32px -18px rgba(29,37,44,.5); text-transform: none; letter-spacing: 0; font-size: .75rem; line-height: 1.5; max-width: 280px;
}
.tip b { display: block; font-family: var(--body); font-size: .875rem; font-weight: 600; margin-bottom: 2px; }
.tip .st { display: inline-flex; align-items: center; gap: 6px; }
.tip .st::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--blue); }
.tip .st.amber::before { background: var(--amber); }
.tip .st.red::before { background: var(--red); }

.steps-dock { position: absolute; z-index: 3; left: 0; right: 0; bottom: clamp(20px, 5vh, 48px); pointer-events: none; }
.steps { position: relative; max-width: 470px; min-height: 196px; }
.step {
  position: absolute; left: 0; bottom: 0; right: 0;
  padding: 22px 24px 24px; background: rgba(255,255,255,.94); border: 1px solid var(--line); border-radius: 16px;
  box-shadow: 0 24px 48px -30px rgba(29,37,44,.45);
  opacity: 0; transform: translateY(14px); transition: opacity .18s ease-out, transform .3s var(--ease);
}
.step.on { opacity: 1; transform: none; transition: opacity .45s .12s var(--ease), transform .45s .12s var(--ease); }
.step-k { color: var(--blue); }
.step[data-step="4"] .step-k { color: var(--amber-deep); }
.step h2 { margin-top: 10px; font: 700 1.5rem/1.12 var(--display); letter-spacing: -.02em; }
.step p { margin-top: 10px; font-size: .9375rem; color: var(--ink-2); }
.rail {
  position: relative; display: grid; grid-template-columns: .8fr 1.25fr 1fr .9fr .8fr; max-width: 470px; margin-top: 16px;
  font: 500 .625rem/1 var(--mono); letter-spacing: .04em; text-transform: uppercase; color: var(--grey);
  border-top: 2px solid var(--line-2); padding-top: 10px; opacity: 0; transition: opacity .4s;
}
.rail.on { opacity: 1; }
.rail span.on { color: var(--ink); }
.rail-fill { position: absolute; top: -2px; left: 0; height: 2px; width: 0; background: var(--blue); }
.stage.fallback { height: auto; }
.stage.fallback .stage-sticky { position: relative; height: auto; overflow: visible; padding-bottom: 48px; }
.stage.fallback .stage-shade, .stage.fallback .rail { display: none; }
.stage.fallback .steps-dock { position: static; margin-top: 56px; }
.stage.fallback .steps { min-height: 0; max-width: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 12px; }
.stage.fallback .step { position: static; opacity: 1; transform: none; }

/* ---------- blocks ---------- */
.block { padding-block: clamp(88px, 12vw, 168px); }
.head { max-width: 760px; }
.h2 { margin-top: 16px; font: 800 clamp(2.25rem, 4.6vw, 4rem)/.98 var(--display); letter-spacing: -.035em; font-variation-settings: "opsz" 96; }
.body-l { margin-top: 20px; font-size: 1.125rem; line-height: 1.6; color: var(--ink-2); max-width: 60ch; }

/* ---------- tray ---------- */
.split { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1.6fr); gap: clamp(32px, 5vw, 80px); align-items: center; }
.ticks { margin-top: 28px; display: grid; gap: 12px; }
.ticks li { display: flex; gap: 12px; align-items: baseline; }
.ticks li::before { content: ""; flex: none; width: 14px; height: 2px; background: var(--blue); transform: translateY(-4px); }
.tray { margin: 0; perspective: 1600px; }
.tray-rim {
  position: relative; padding: 14px; border-radius: 22px;
  background: linear-gradient(160deg, #FBFBFA 0%, #E6E9E7 55%, #D8DCD9 100%);
  box-shadow: 0 1px 0 #fff inset, 0 -1px 0 rgba(0,0,0,.06) inset, 0 50px 80px -50px rgba(29,37,44,.55), 0 18px 30px -24px rgba(29,37,44,.4);
  transform-origin: 50% 100%; transform: rotateX(var(--tilt, 0deg)); transition: transform .2s linear;
}
.tray-rim::before { content: ""; position: absolute; inset: 7px; border-radius: 16px; border: 1px solid rgba(0,0,0,.06); pointer-events: none; }
.tray-rim img { position: relative; border-radius: 10px; border: 1px solid var(--line-2); width: 100%; height: auto; background: var(--paper); }
.tray figcaption { margin-top: 16px; color: var(--grey); text-align: right; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

/* ---------- squads ---------- */
.stations { margin-top: 64px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; position: relative; }
.stations::before { content: ""; position: absolute; left: 0; right: 0; top: 30px; border-top: 2px dashed var(--line-2); }
.station { position: relative; padding: 0 28px 0 0; }
.station + .station { padding-left: 28px; border-left: 1px solid var(--line); }
.station-k { position: relative; display: inline-block; background: var(--canvas); padding-right: 12px; color: var(--grey); line-height: 60px; }
.station h3 { font: 700 1.75rem/1.1 var(--display); letter-spacing: -.02em; }
.station > p { margin-top: 10px; color: var(--ink-2); font-size: .9875rem; max-width: 32ch; }
.pucks { margin-top: 20px; display: grid; gap: 8px; }
.pucks li { display: flex; align-items: center; gap: 10px; font: 500 .9375rem/1.3 var(--mono); }
.pucks i { width: 14px; height: 14px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #5E9A7C, var(--blue) 60%, var(--blue-deep)); box-shadow: 0 2px 4px rgba(22,70,52,.4); }
.pucks em { font-style: normal; color: var(--grey); font-size: .75rem; }
.gate { display: inline-flex; align-items: center; gap: 8px; margin-top: 22px; color: var(--amber-deep); }
.gate::before { content: ""; width: 12px; height: 12px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 3px rgba(240,180,93,.25); }
.skills { margin-top: 72px; padding-top: 28px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: baseline; }
.skills-h { color: var(--ink-2); max-width: 30ch; }
.skills-h strong { color: var(--ink); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; flex: 1 1 520px; text-transform: none; letter-spacing: 0; }
.chips li { padding: 7px 12px; border-radius: 8px; background: var(--paper); border: 1px solid var(--line-2); font-size: .8125rem; }
@media (max-width: 900px) {
  .stations { grid-template-columns: 1fr; gap: 36px; }
  .stations::before { display: none; }
  .station, .station + .station { padding: 0; border-left: 0; }
}

/* ---------- analytics ---------- */
.analytics { background: var(--paper); border-block: 1px solid var(--line); }
.analytics .station-k { background: var(--paper); }
.an-grid { margin-top: 56px; display: grid; grid-template-columns: minmax(0, 1fr); gap: 40px; }
.an-side { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 20px 48px; align-items: start; }
.seg { display: inline-flex; flex-wrap: wrap; gap: 4px; padding: 4px; border-radius: 12px; background: var(--steel); border: 1px solid var(--line); }
.seg button { font: 600 .875rem/1 var(--body); color: var(--ink-2); background: transparent; border: 0; padding: 10px 12px; border-radius: 9px; cursor: pointer; transition: background .2s, color .2s; }
.seg button:hover { color: var(--ink); }
.seg button[aria-selected="true"] { background: var(--paper); color: var(--ink); box-shadow: 0 1px 2px rgba(29,37,44,.12), 0 0 0 1px var(--line); }
.an-notes { margin-top: 0; }
.an-note { display: grid; grid-template-columns: minmax(0, 14ch) minmax(0, 1fr); gap: 20px 40px; align-items: start; }
.an-note h3 { font: 700 1.5rem/1.15 var(--display); letter-spacing: -.02em; }
.an-note dl { margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px 24px; }
.an-note dt { font-weight: 600; }
.an-note dd { margin: 2px 0 0; color: var(--ink-2); font-size: .9375rem; }
.an-note dl > div { padding-left: 14px; border-left: 2px solid var(--blueprint); }
.shots { display: grid; }
.shots img { grid-area: 1 / 1; animation: fadein .45s var(--ease); }
@keyframes fadein { from { opacity: 0; transform: translateY(6px); } }
@media (max-width: 1000px) { .an-side, .an-note { grid-template-columns: 1fr; } }

/* ---------- loop ---------- */
.loop-row { margin-top: 56px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; counter-reset: s; }
.loop-row li {
  position: relative; padding: 20px 18px 22px; border-radius: 14px; background: var(--paper); border: 1px solid var(--line);
  box-shadow: 0 1px 0 #fff inset, 0 14px 24px -22px rgba(29,37,44,.5);
}
.loop-row li::after { content: ""; position: absolute; top: 50%; right: -9px; width: 8px; height: 2px; background: var(--line-2); }
.loop-row li:last-child::after { display: none; }
.loop-row span { color: var(--blue); }
.loop-row p { margin-top: 10px; font-size: .9375rem; color: var(--ink-2); line-height: 1.5; }
.loop-row code { display: block; margin-top: 12px; font-size: .6875rem; color: var(--grey); text-transform: none; letter-spacing: 0; overflow-wrap: anywhere; }
.loop-row .hl { background: var(--blueprint); border-color: #C3DCCD; }
.loop-row .amber { background: #FFF6E7; border-color: #F3D6A6; }
.loop-row .amber span { color: var(--amber-deep); }
@media (max-width: 1100px) { .loop-row { grid-template-columns: repeat(3, 1fr); } .loop-row li::after { display: none; } }
@media (max-width: 560px) { .loop-row { grid-template-columns: 1fr; } }

/* ---------- autonomy panel ---------- */
.auto-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(32px, 5vw, 80px); align-items: center; }
.panel {
  position: relative; padding: 26px; border-radius: 24px;
  background: linear-gradient(170deg, #FDFDFC 0%, #ECEEEC 60%, #E1E4E2 100%);
  border: 1px solid var(--line-2);
  box-shadow: 0 1px 0 #fff inset, 0 60px 90px -60px rgba(29,37,44,.6), 0 20px 30px -26px rgba(29,37,44,.4);
}
.panel::before, .panel::after { content: ""; position: absolute; width: 10px; height: 10px; border-radius: 50%; background: radial-gradient(circle at 40% 35%, #fff, #B9BFBB); box-shadow: 0 1px 1px rgba(0,0,0,.25); top: 14px; }
.panel::before { left: 14px; } .panel::after { right: 14px; }
.panel-top { display: flex; justify-content: space-between; gap: 12px; padding: 4px 8px 16px; }
.panel-k { color: var(--grey); }
.panel-v { color: var(--blue); }
.detents { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; padding: 6px; background: #DEE2DF; border-radius: 14px; box-shadow: 0 2px 4px rgba(0,0,0,.08) inset; }
.detents button {
  display: grid; gap: 4px; padding: 14px 8px; border: 0; border-radius: 10px; cursor: pointer; text-align: center;
  background: linear-gradient(180deg, #FFFFFF, #F1F3F1); color: var(--ink-2); font: 500 .8125rem/1.2 var(--body);
  box-shadow: 0 1px 0 #fff inset, 0 2px 3px rgba(29,37,44,.14); transition: transform .15s, background .2s, color .2s;
}
.detents button b { font: 500 .8125rem/1 var(--mono); color: var(--ink); }
.detents button:active { transform: translateY(1px); }
.detents button[aria-checked="true"] { background: var(--blue); color: #EAF3ED; box-shadow: 0 2px 6px rgba(22,70,52,.45) inset; }
.detents button[aria-checked="true"] b { color: #fff; }
.detents button:disabled { cursor: not-allowed; opacity: .45; }
.lvl-desc { min-height: 5.2em; margin: 18px 8px 0; color: var(--ink-2); font-size: .9875rem; }
.panel-bottom { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 16px; align-items: stretch; }
.kill {
  display: flex; align-items: center; gap: 14px; padding: 12px 18px 12px 12px; border-radius: 14px; cursor: pointer;
  border: 1px solid var(--line-2); background: var(--paper); font: 600 .9375rem/1 var(--body); color: var(--ink);
}
.kill-cap { width: 52px; height: 28px; border-radius: 99px; background: #D9DDDA; position: relative; box-shadow: 0 1px 3px rgba(0,0,0,.18) inset; transition: background .25s; }
.kill-cap::after { content: ""; position: absolute; top: 3px; left: 3px; width: 22px; height: 22px; border-radius: 50%; background: linear-gradient(180deg, #fff, #E6E8E6); box-shadow: 0 1px 3px rgba(0,0,0,.3); transition: transform .25s var(--ease); }
.kill[aria-pressed="true"] .kill-cap { background: var(--red); }
.kill[aria-pressed="true"] .kill-cap::after { transform: translateX(24px); }
.readouts { flex: 1 1 300px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.readouts div { padding: 12px 14px; border-radius: 12px; background: #20272E; color: #F3F5F4; box-shadow: 0 2px 4px rgba(0,0,0,.25) inset; }
.readouts span { display: block; color: #9AA5AE; font-size: .625rem; white-space: nowrap; }
.readouts b { display: block; margin-top: 6px; font: 500 .9375rem/1 var(--mono); color: #FFD08A; white-space: nowrap; }
.panel-note { margin: 16px 8px 0; color: var(--grey); text-transform: none; letter-spacing: .01em; }
.panel.killed .readouts b { color: #F28B7C; }
@media (max-width: 1000px) { .auto-grid { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .detents { grid-template-columns: repeat(3, 1fr); } .readouts { grid-template-columns: 1fr; } }


/* ---------- close + everywhere ---------- */
.close { background: linear-gradient(180deg, var(--canvas), #EEF1EF); }
.close-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 64px; align-items: center; }
.close-mark { width: 64px; height: 64px; color: var(--ink); }
.close h2 { margin-top: 24px; font: 800 clamp(2.5rem, 5.4vw, 4.75rem)/.95 var(--display); letter-spacing: -.04em; max-width: 12ch; }
.close .body-l { margin-top: 18px; }
.close .cta-row { margin-top: 28px; }
.close-sf { padding: 32px; border-radius: 20px; background: #fff; border: 1px solid var(--line); box-shadow: 0 30px 60px -40px rgba(29, 37, 44, .35); }
.sf-h { margin-top: 10px; font: 700 clamp(1.4rem, 2.2vw, 1.9rem)/1.1 var(--display); letter-spacing: -.02em; }
.sf-grid { margin-top: 28px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--ink); }
.sf-col { padding: 20px 20px 0 0; }
.sf-col + .sf-col { padding-left: 20px; border-left: 1px solid var(--line); }
.sf-k { color: var(--grey); white-space: nowrap; font-size: .6875rem; }
.sf-col ul { margin-top: 16px; display: grid; gap: 8px; font: 600 1.125rem/1.2 var(--display); letter-spacing: -.01em; }
@media (max-width: 900px) { .close-split { grid-template-columns: 1fr; gap: 40px; } }
@media (max-width: 560px) { .close-sf { padding: 22px; } .sf-grid { grid-template-columns: 1fr; } .sf-col, .sf-col + .sf-col { padding: 18px 0 0; border-left: 0; } }

.foot { padding-block: 32px 48px; border-top: 1px solid var(--line); }
.foot-row { display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; justify-content: space-between; }
.foot nav { display: flex; flex-wrap: wrap; gap: 24px; font-size: .9375rem; color: var(--ink-2); }
.foot nav a { text-decoration: none; }
.foot nav a:hover { color: var(--ink); }

/* ---------- mobile stage ---------- */
@media (max-width: 720px) {
  .stage { height: 720vh; }
  .stage-shade { background: linear-gradient(to bottom, rgba(247,248,246,.98) 0, rgba(247,248,246,.94) 58%, rgba(247,248,246,0) 74%); }
  .stage.relaying .stage-shade { opacity: 0; }
  .hero-copy { padding-top: 92px; }
  .lede { max-width: none; }
  .steps { min-height: 214px; max-width: none; }
  .step { padding: 16px 18px 18px; }
  .step h2 { font-size: 1.25rem; }
  .step p { font-size: .875rem; }
  .rail { max-width: none; font-size: .5625rem; letter-spacing: .02em; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
}