/* tracston.observer — THE DIGITAL LIGHTHOUSE (wiki 119/2214, v1001 redesign).
   A lighthouse in a digital ocean — not another dark cyberpunk product site.
   Deep ocean blues throughout; storm intensity and light/dark tone vary per
   scene (calm surface, deep storm, clearing horizon) rather than one flat
   dark theme. Warm light is reserved for the lighthouse beam itself. */
:root{
  --deep:#062A46; --storm:#0B3A5B; --atlantic:#0D4F73; --deepblue:#082F49;
  --telemetry:#168AAD; --cyan:#4CC9D9; --mist:#DCEAF0; --cloud:#EDF4F7; --white:#F8FCFF;
  --warm:#FFE9BE; --warm2:#FFD98A;
  --steel:#9FC1D6; --green:#35DB9A; --amber:#F0B83F; --red:#F0626F;
  --line:rgba(220,234,240,.16);
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --nav-h:64px;
}
*{box-sizing:border-box}
html,body{max-width:100%;overflow-x:hidden}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html.no-smooth{scroll-behavior:auto}
body{margin:0;background:var(--deep);color:var(--white);font-family:var(--sans);font-size:16px;line-height:1.55;overflow-x:hidden}
body.locked{overflow:hidden}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-.01em}
.mono{font-family:var(--mono)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

/* ---------- ocean stage (canvas) ---------- */
#stage{position:fixed;inset:0;width:100%;height:100%;z-index:0;background:var(--deep)}
#stage-vignette{position:fixed;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(ellipse at 50% 30%,rgba(6,42,70,0) 45%,rgba(4,20,34,.55) 100%)}

/* ---------- loading / intro ---------- */
#boot{position:fixed;inset:0;z-index:100;background:var(--deep);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:22px;transition:opacity .6s}
#boot.done{opacity:0;pointer-events:none}
#boot .beacon-o{position:relative;width:84px;height:84px}
#boot .beacon-o svg{width:100%;height:100%;display:block}
#boot .beacon-ring{fill:none;stroke:rgba(220,234,240,.22);stroke-width:3}
#boot .beacon-sweep{transform-origin:42px 42px;animation:beaconspin 10s linear infinite}
#boot .beacon-core{fill:var(--warm)}
@keyframes beaconspin{to{transform:rotate(360deg)}}
#boot .line{font-family:var(--mono);letter-spacing:.3em;font-size:11px;color:var(--steel)}
#boot ol{list-style:none;margin:0;padding:0;font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--steel);display:grid;gap:6px;min-width:240px;opacity:.8}
#boot li{display:flex;justify-content:space-between;gap:24px;opacity:.35;transition:opacity .25s}
#boot li.on{opacity:1;color:var(--white)}
#boot li.on::after{content:"OK";color:var(--green)}
#boot li::after{content:"··";color:var(--steel)}

#intro{position:fixed;inset:0;z-index:90;background:transparent;display:flex;align-items:center;justify-content:center;transition:opacity .9s}
#intro.done{opacity:0;pointer-events:none}
#intro .line{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);text-align:center;font-family:var(--mono);letter-spacing:.3em;font-size:clamp(12px,1.5vw,16px);color:var(--white);opacity:0;transition:opacity 1.1s ease;padding:0 24px;max-width:90vw}
#intro .line.show{opacity:1}
#intro .cine{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center;opacity:0;transition:opacity 1.2s ease;width:min(920px,92vw)}
#intro .cine.show{opacity:1}
#intro .brandline{font-family:var(--mono);letter-spacing:.4em;font-size:12px;color:var(--cyan);margin-bottom:22px}
#intro h1{font-size:clamp(28px,5vw,60px);line-height:1.08;font-weight:600;letter-spacing:-.02em}
#intro .cta{margin-top:36px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
#skip{position:fixed;right:24px;bottom:22px;z-index:95;font-family:var(--mono);font-size:11px;letter-spacing:.3em;color:var(--steel);padding:10px 14px;border:1px solid var(--line);transition:color .2s,border-color .2s,opacity .5s}
#skip:hover{color:var(--white);border-color:var(--steel)}
#skip.hide{opacity:0;pointer-events:none}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;padding:14px 22px;border:1px solid var(--cyan);color:var(--cyan);transition:background .2s,color .2s,box-shadow .2s}
.btn:hover{background:var(--cyan);color:var(--deep);box-shadow:0 0 40px rgba(76,201,217,.28)}
.btn.ghost{border-color:var(--line);color:var(--steel)}
.btn.ghost:hover{background:transparent;color:var(--white);border-color:var(--steel);box-shadow:none}
.btn.warm{border-color:var(--warm2);color:var(--warm2)}
.btn.warm:hover{background:var(--warm2);color:var(--deep)}
.btn.sm{padding:9px 14px;font-size:10px}
.tone-light .btn{border-color:var(--telemetry);color:var(--telemetry)}
.tone-light .btn:hover{background:var(--telemetry);color:var(--white)}

/* ---------- brand mark ---------- */
.mark{display:inline-flex;align-items:center}
.mark .wm{height:52px;width:auto;display:block}
#nav .mark .wm{height:48px}
#boot .mark .wm,#intro .mark .wm{height:68px}
footer .mark .wm{height:48px}

/* ---------- nav ---------- */
#nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:60;display:flex;align-items:center;justify-content:space-between;padding:0 28px;
  background:linear-gradient(180deg,rgba(6,42,70,.85),rgba(6,42,70,0));opacity:0;transform:translateY(-8px);transition:opacity .6s,transform .6s}
body.live #nav{opacity:1;transform:none}
#nav ul{list-style:none;margin:0;padding:0;display:flex;gap:26px}
#nav ul a{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--steel);transition:color .2s}
#nav ul a:hover,#nav ul a[aria-current]{color:var(--white)}
#nav .right{display:flex;align-items:center;gap:14px}
#menu-btn{display:none;font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--steel);border:1px solid var(--line);padding:8px 10px}
@media (max-width:980px){
  #nav ul{display:none;position:fixed;top:var(--nav-h);left:0;right:0;flex-direction:column;gap:0;background:rgba(6,42,70,.97);border-top:1px solid var(--line);padding:12px 0}
  #nav.open ul{display:flex}
  #nav ul li a{display:block;padding:14px 28px}
  #menu-btn{display:inline-block}
}
@media (max-width:700px){#nav{padding:0 16px}#nav .right .btn{display:none}}

/* ---------- HUD + chapters ---------- */
.hud{position:fixed;z-index:55;font-family:var(--mono);font-size:10px;letter-spacing:.28em;color:var(--steel);pointer-events:none;opacity:0;transition:opacity .8s}
body.live .hud{opacity:.85}
.hud.tl{left:28px;top:calc(var(--nav-h) + 10px)}
.hud.tr{right:28px;top:calc(var(--nav-h) + 10px);text-align:right}
.hud.bl{left:28px;bottom:20px}
.hud.br{right:28px;bottom:20px;text-align:right}
.hud .live{color:var(--green)}
.hud .live::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--green);margin-right:8px;box-shadow:0 0 10px var(--green);animation:blink 2.4s infinite}
@keyframes blink{50%{opacity:.25}}
.hud small{display:block;color:rgba(220,234,240,.6);letter-spacing:.18em}
#chapters{position:fixed;left:28px;top:50%;transform:translateY(-50%);z-index:55;list-style:none;margin:0;padding:0;display:grid;gap:13px;opacity:0;transition:opacity .8s}
body.live #chapters{opacity:1}
#chapters a{display:flex;align-items:baseline;gap:10px;font-family:var(--mono);font-size:10px;letter-spacing:.24em;color:rgba(220,234,240,.5);transition:color .3s}
#chapters a span{opacity:0;transform:translateX(-6px);transition:opacity .3s,transform .3s}
#chapters a:hover span,#chapters li.on a span{opacity:1;transform:none}
#chapters li.on a,#chapters li.on a b{color:var(--cyan)}
@media (max-width:1180px){#chapters,.hud.bl,.hud.tl{display:none}}
@media (max-width:700px){.hud{display:none}}
body.tone-light .hud,body.tone-light #chapters a{color:rgba(8,47,73,.6)}
body.tone-light #chapters li.on a,body.tone-light #chapters li.on a b{color:var(--telemetry)}
body.tone-light .hud .live{color:#1C9A6C}
body.tone-light #nav{background:linear-gradient(180deg,rgba(237,244,247,.9),rgba(237,244,247,0))}
body.tone-light #nav ul a{color:#3D6883}
body.tone-light #nav ul a:hover,body.tone-light #nav ul a[aria-current]{color:#062A46}
body.tone-light #menu-btn{color:#3D6883;border-color:rgba(8,47,73,.2)}
body.tone-light #nav .right .btn{border-color:var(--telemetry);color:var(--telemetry)}
body.tone-light #nav .right .btn:hover{background:var(--telemetry);color:#fff}

/* ---------- layout ---------- */
main{position:relative;z-index:10}
.scene{position:relative;min-height:100vh;display:flex;align-items:center;padding:calc(var(--nav-h) + 40px) 24px 80px;transition:background-color .8s}
@media (max-width:700px){.scene{padding:calc(var(--nav-h) + 24px) 16px 56px}}
.scene .wrap{width:min(1180px,100%);margin:0 auto}
.scene.narrow .wrap{width:min(860px,100%)}
.scene.tone-light{background:linear-gradient(180deg,var(--cloud),var(--mist))}
.scene.tone-light,.scene.tone-light .steel,.scene.tone-light .lead{color:#0D3854}
.kicker{font-family:var(--mono);font-size:11px;letter-spacing:.32em;color:var(--cyan);margin-bottom:20px;text-transform:uppercase}
.tone-light .kicker{color:var(--telemetry)}
.h-cine{font-size:clamp(30px,5vw,64px);line-height:1.06;font-weight:600;letter-spacing:-.02em;max-width:18ch}
.h-cine .dim{color:var(--steel)}
.h-cine .warm{color:var(--warm2)}
.h-cine .cyan{color:var(--cyan)}
.tone-light .h-cine{color:#062A46}
.tone-light .h-cine .dim{color:#4E7A97}
.lead{font-size:clamp(16px,1.5vw,20px);color:var(--steel);max-width:60ch;margin-top:24px;line-height:1.65}
.lead b{color:var(--white);font-weight:600}
.tone-light .lead{color:#3D6883}
.tone-light .lead b{color:#062A46}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .9s ease,transform .9s ease}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.15s}.reveal.d2{transition-delay:.3s}.reveal.d3{transition-delay:.45s}.reveal.d4{transition-delay:.6s}.reveal.d5{transition-delay:.75s}
.grid2{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.grid2>*{min-width:0}
@media (max-width:900px){.grid2{grid-template-columns:1fr;gap:36px}}
.panel{background:rgba(4,26,44,.55);border:1px solid var(--line);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);padding:22px 24px;position:relative}
.tone-light .panel{background:rgba(255,255,255,.72);border-color:rgba(8,47,73,.14)}
.panel .ph{display:flex;flex-wrap:wrap;gap:4px 12px;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:10px;letter-spacing:.26em;color:var(--steel);border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:16px}
.panel .ph i{font-style:normal;color:var(--cyan)}
.tag{display:inline-block;font-family:var(--mono);font-size:10px;letter-spacing:.18em;padding:4px 9px;border:1px solid var(--line);color:var(--steel)}
.tag.cyan{color:var(--cyan);border-color:rgba(76,201,217,.45)}
.tag.green{color:var(--green);border-color:rgba(53,219,154,.45)}
.tag.amber{color:var(--amber);border-color:rgba(240,184,63,.5)}
.tag.red{color:var(--red);border-color:rgba(240,98,111,.5)}
.tag.warm{color:var(--warm2);border-color:rgba(255,217,138,.5)}

/* ---------- hero ---------- */
#hero .wrap{text-align:center}
#hero .h-cine{margin:0 auto;max-width:20ch}
#hero .lead{margin-left:auto;margin-right:auto}
.hero-cta{margin-top:40px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.signals{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 14px;margin-top:56px}
.signals span{font-family:var(--mono);font-size:10px;letter-spacing:.16em;padding:9px 13px;border:1px solid var(--line);background:rgba(4,26,44,.4);color:var(--steel);opacity:0;transform:translateY(8px);transition:opacity .5s,transform .5s}
.in .signals span{opacity:1;transform:none}
.signals span b{color:var(--cyan);font-weight:600;margin-right:6px}
.scroll-hint{margin-top:54px;font-family:var(--mono);font-size:10px;letter-spacing:.32em;color:rgba(220,234,240,.55);animation:hint 3s infinite}
@keyframes hint{50%{transform:translateY(6px)}}

/* ---------- rising complexity chips (storm one) ---------- */
.rise{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.rise span{font-family:var(--mono);font-size:10px;letter-spacing:.22em;padding:8px 12px;border:1px solid var(--line);color:var(--steel);opacity:0;transform:translateY(10px);transition:opacity .5s,transform .5s}
.in .rise span{opacity:1;transform:none}
.noclarity{margin-top:34px;font-family:var(--mono);letter-spacing:.24em;font-size:clamp(13px,1.6vw,17px);color:var(--warm2);opacity:0;transition:opacity 1s}
.in .noclarity{opacity:1}

/* ---------- lighthouse activation ---------- */
.activation-map{margin-top:34px;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
@media (max-width:640px){.activation-map{grid-template-columns:1fr 1fr}}
.activation-map div{padding:12px 10px;border:1px solid var(--line);background:rgba(4,26,44,.4);font-family:var(--mono);opacity:0;transform:scale(.9);transition:opacity .5s,transform .5s}
.in .activation-map div{opacity:1;transform:none}
.activation-map b{display:block;font-size:13px;color:var(--white);font-weight:600}
.activation-map span{font-size:9px;letter-spacing:.18em;color:var(--steel)}

/* ---------- human + agent duality ---------- */
.paths{display:grid;grid-template-columns:1fr auto 1fr;gap:26px;align-items:center;margin-top:34px}
@media (max-width:760px){.paths{grid-template-columns:1fr}}
.path{display:grid;gap:0;text-align:center}
.path .node{padding:13px 10px;border:1px solid var(--line);background:rgba(4,26,44,.45);font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--white);opacity:0;transform:translateY(8px);transition:opacity .5s,transform .5s}
.in .path .node{opacity:1;transform:none}
.path .arrow{font-family:var(--mono);color:var(--steel);padding:6px 0;font-size:12px}
.path.human .node.on{border-color:var(--cyan);color:var(--cyan)}
.path.agent .node.on{border-color:var(--warm2);color:var(--warm2)}
.paths .converge{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--steel)}
.onetruth{margin-top:30px;text-align:center;font-family:var(--mono);letter-spacing:.3em;font-size:clamp(14px,2vw,22px);color:var(--white)}

/* ---------- AFPM flow chain ---------- */
.flowchain{display:flex;flex-wrap:wrap;gap:0;margin-top:10px}
.flowchain span{font-family:var(--mono);font-size:11px;letter-spacing:.08em;padding:9px 12px;border:1px solid var(--line);color:var(--white);position:relative;background:rgba(4,26,44,.45)}
.flowchain span:not(:last-child)::after{content:"→";position:absolute;right:-13px;top:9px;color:var(--cyan);z-index:2}
.flow-timing{margin-top:26px;display:grid;gap:6px}
.flow-timing div{display:grid;grid-template-columns:110px 1fr 70px;gap:10px;align-items:center;font-family:var(--mono);font-size:11px;opacity:0;transform:translateX(-8px);transition:opacity .4s,transform .4s}
.in .flow-timing div{opacity:1;transform:none}
.flow-timing span{color:var(--white);letter-spacing:.1em}
.flow-timing i{display:block;height:7px;background:rgba(220,234,240,.12);position:relative}
.flow-timing i::after{content:"";position:absolute;left:0;top:0;bottom:0;width:var(--w);background:var(--cyan);transition:width .8s ease}
.flow-timing div.hot i::after{background:var(--red)}
.flow-timing em{font-style:normal;text-align:right;color:var(--steel)}
.flow-total{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-family:var(--mono);font-size:13px;letter-spacing:.14em;color:var(--white)}
.flow-total b{color:var(--warm2)}

/* ---------- AFPM tabs + product screenshot ---------- */
.shot-tabs{display:flex;gap:8px;flex-wrap:wrap}
.shot-tab{font-family:var(--mono);font-size:11px;letter-spacing:.16em;padding:11px 18px;border:1px solid var(--line);color:var(--steel);transition:all .2s}
.shot-tab:hover{color:var(--white);border-color:var(--steel)}
.shot-tab.on{border-color:var(--cyan);color:var(--cyan);background:rgba(76,201,217,.06)}
.shot-panel{margin-top:22px}
.shot-panel:not(.on){display:none}
.screenshot-frame{position:relative;border:1px solid var(--line);background:#01040c;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.screenshot-frame img{display:block;width:100%;height:auto}
.screenshot-frame::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(115deg,rgba(255,233,190,0) 40%,rgba(255,233,190,.10) 50%,rgba(255,233,190,0) 60%);background-size:250% 250%;background-position:120% 0;transition:background-position 1.1s ease}
.screenshot-frame:hover::after{background-position:-20% 0}

/* ---------- investigation path ---------- */
.invpath{display:grid;gap:0;margin-top:10px}
.invpath div{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;padding:10px 0;color:var(--steel)}
.invpath div b{color:var(--white);font-weight:600}
.invpath .rc{margin-top:6px;padding:14px 16px;border:1px solid var(--warm2);background:rgba(255,217,138,.06);font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--warm2)}

/* ---------- layered ocean depth ---------- */
.depths{display:grid;gap:0;margin-top:20px;border:1px solid var(--line)}
.depth-row{display:grid;grid-template-columns:140px 1fr;border-top:1px solid var(--line);opacity:0;transform:translateX(-10px);transition:opacity .5s,transform .5s}
.depth-row:first-child{border-top:0}
.in .depth-row{opacity:1;transform:none}
.depth-row .lbl{padding:16px 14px;font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--cyan);display:flex;align-items:center}
.depth-row .items{padding:16px 14px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.depth-row .items span{font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--white)}
.depth-row .items span:not(:last-child)::after{content:"·";color:var(--steel);margin-left:8px}

/* ---------- alert correlation funnel ---------- */
.funnel{display:flex;align-items:center;gap:0;margin-top:30px;flex-wrap:wrap}
.funnel .step{padding:16px 18px;border:1px solid var(--line);background:rgba(4,26,44,.45);text-align:center;font-family:var(--mono);opacity:0;transform:scale(.9);transition:opacity .5s,transform .5s}
.in .funnel .step{opacity:1;transform:none}
.funnel .step b{display:block;font-size:clamp(18px,2vw,26px);color:var(--white);font-weight:700}
.funnel .step span{font-size:9px;letter-spacing:.16em;color:var(--steel)}
.funnel .step.final b{color:var(--warm2)}
.funnel .arrow{padding:0 10px;color:var(--steel);font-family:var(--mono)}

/* ---------- root cause card ---------- */
.rootcause{margin-top:14px;padding:22px 24px;border:1px solid var(--warm2);background:rgba(255,217,138,.05)}
.rootcause .rc-head{display:flex;flex-wrap:wrap;gap:6px 14px;justify-content:space-between;align-items:baseline;font-family:var(--mono)}
.rootcause .rc-head b{font-size:clamp(16px,1.8vw,22px);color:var(--white)}
.rootcause .rc-head i{font-style:normal;color:var(--warm2);font-size:13px;letter-spacing:.1em}
.rootcause ul{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:7px;font-family:var(--mono);font-size:12px;color:var(--steel)}
.rootcause ul li::before{content:"▸ ";color:var(--warm2)}

/* ---------- AI advisor ---------- */
.advisor{margin-top:14px;border:1px solid var(--line);background:rgba(4,26,44,.5)}
.advisor .q{padding:16px 18px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:13px;color:var(--white)}
.advisor .q::before{content:"“";color:var(--cyan)}
.advisor .q::after{content:"”";color:var(--cyan)}
.advisor .a{padding:18px;font-size:15px;color:var(--steel);line-height:1.7}
.advisor .a b{color:var(--white);font-weight:600}
.advisor .acts{display:flex;gap:8px;flex-wrap:wrap;padding:0 18px 18px}
.advisor .acts span{font-family:var(--mono);font-size:10px;letter-spacing:.14em;padding:7px 11px;border:1px solid var(--line);color:var(--steel)}
.evidence-scale{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.evidence-scale span{font-family:var(--mono);font-size:10px;letter-spacing:.16em;padding:7px 11px;border:1px solid var(--line);color:var(--steel)}
.evidence-scale span.top{border-color:var(--cyan);color:var(--cyan)}

/* ---------- collaboration closing ---------- */
#collab .wrap{text-align:center}
.onelighthouse{margin:36px auto 0;max-width:820px;display:grid;grid-template-columns:1fr auto 1fr;gap:20px;align-items:center}
@media (max-width:700px){.onelighthouse{grid-template-columns:1fr}}
.onelighthouse .side{padding:18px;border:1px solid var(--line);background:rgba(4,26,44,.45);text-align:left}
.onelighthouse .side h4{font-family:var(--mono);font-size:11px;letter-spacing:.24em;color:var(--cyan);margin:0 0 10px}
.onelighthouse .side p{margin:0;font-size:14px;color:var(--steel);line-height:1.6}
.onelighthouse .mid{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--steel)}

/* ---------- deployment / ecosystem ---------- */
.modes{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}
@media (max-width:760px){.modes{grid-template-columns:1fr}}
.modes .mode{padding:30px 24px;border:1px solid var(--line);font-family:var(--mono);letter-spacing:.24em;font-size:clamp(13px,1.4vw,16px);text-align:center;color:var(--white);background:rgba(4,26,44,.45)}
.modes .mode small{display:block;margin-top:12px;font-size:10px;letter-spacing:.16em;color:var(--steel);text-transform:none}
.eco{margin-top:30px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media (max-width:760px){.eco{grid-template-columns:1fr}}
.eco>div{padding:16px;border:1px solid var(--line);background:rgba(4,26,44,.4)}
.eco .mid{border-color:var(--cyan);background:rgba(76,201,217,.06)}
.eco b{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--white);margin-bottom:8px}
.eco .mid b{color:var(--cyan)}
.eco span{font-size:13px;color:var(--steel);line-height:1.55}
.eco-note{margin-top:16px;font-size:13px;color:var(--steel);max-width:70ch}
.notice{margin-top:34px;padding:18px 22px;border:1px solid var(--line);background:rgba(4,26,44,.4);font-size:14px;color:var(--steel);line-height:1.6}
.notice b{color:var(--white)}
.sf-synth{margin:12px 0 0;font-family:var(--mono);font-size:9px;letter-spacing:.18em;color:rgba(220,234,240,.6)}
.tone-light .modes .mode{background:rgba(255,255,255,.6);border-color:rgba(8,47,73,.16);color:#062A46}
.tone-light .modes .mode small{color:#4E7A97}
.tone-light .eco>div{background:rgba(255,255,255,.55);border-color:rgba(8,47,73,.16)}
.tone-light .eco .mid{border-color:var(--telemetry);background:rgba(22,138,173,.08)}
.tone-light .eco b{color:#062A46}
.tone-light .eco .mid b{color:var(--telemetry)}
.tone-light .eco span{color:#3D6883}
.tone-light .eco-note{color:#3D6883}
.tone-light .notice{background:rgba(255,255,255,.55);border-color:rgba(8,47,73,.16);color:#3D6883}
.tone-light .notice b{color:#062A46}
.tone-light .sf-synth{color:rgba(8,47,73,.55)}

/* ---------- footer ---------- */
footer{position:relative;z-index:10;background:var(--deep);border-top:1px solid var(--line);padding:44px 28px;font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--steel)}
footer .wrap{width:min(1180px,100%);margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
@media (max-width:800px){footer .wrap{grid-template-columns:1fr 1fr}}
footer h5{margin:0 0 12px;font-weight:600;font-size:10px;letter-spacing:.3em;color:var(--cyan)}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
footer a:hover{color:var(--white)}
footer p{margin:0;line-height:1.7;letter-spacing:.04em;font-family:var(--sans);font-size:13px}
footer .legal{margin-top:34px;padding-top:18px;border-top:1px solid var(--line);font-size:10px;color:rgba(220,234,240,.55);width:min(1180px,100%);margin-left:auto;margin-right:auto}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}
body.reduced .reveal{opacity:1;transform:none}