@font-face{font-family:Barlow;font-weight:300;font-display:swap;src:url(fonts/barlow-300.woff2) format('woff2')}
@font-face{font-family:Barlow;font-weight:400;font-display:swap;src:url(fonts/barlow-400.woff2) format('woff2')}
@font-face{font-family:Barlow;font-weight:500;font-display:swap;src:url(fonts/barlow-500.woff2) format('woff2')}
@font-face{font-family:Barlow;font-weight:700;font-display:swap;src:url(fonts/barlow-700.woff2) format('woff2')}
/* dark warm (default) */
:root{--bg:#000;--ink:#fff;--mute:rgba(255,255,255,.64);--line:rgba(255,255,255,.2);--soft:rgba(255,255,255,.78);
--surface:rgba(10,6,4,.72);--panel:#0b0e13;--field:rgba(24,28,36,.82);--field-line:rgba(255,255,255,.16);--bubble:rgba(255,255,255,.1);--shadow:#0008;
--veil:rgba(6,4,3,.62);--star:#fff9;--planet:#1c1009;--planet-2:#070302;--rim:#ffd9a8cc;--glow:#ffb86baa;--glow-2:#e8794f55;--inner:#ffb86b22;
--font:'Barlow','Helvetica Neue',Arial,sans-serif;box-sizing:border-box;color-scheme:dark}
/* light cold blue */
:root[data-theme=light]{--bg:#eef3fa;--ink:#0b1a2e;--mute:rgba(11,26,46,.68);--line:rgba(11,26,46,.16);--soft:rgba(11,26,46,.8);
--surface:rgba(255,255,255,.72);--panel:#fff;--field:rgba(255,255,255,.88);--field-line:rgba(11,26,46,.14);--bubble:rgba(37,99,235,.1);--shadow:#1e3a8a22;
--veil:rgba(255,255,255,.7);--star:#3b6fd655;--planet:#fff;--planet-2:#dce7f6;--rim:#9cc2ffcc;--glow:#4f8dfdaa;--glow-2:#1d5fe055;--inner:#4f8dfd22;color-scheme:light}
*,*::before,*::after{box-sizing:inherit}
html{background:var(--bg)}
html,body{height:100%;margin:0;color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased;line-height:1.5}
body{display:flex;flex-direction:column;padding-top:env(safe-area-inset-top,0px)}
a{color:inherit;text-decoration:none}:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.scene{position:fixed;inset:0;z-index:-1;overflow:hidden;background:radial-gradient(1px 1px at 12% 22%,var(--star),transparent),radial-gradient(1px 1px at 78% 14%,var(--star),transparent),radial-gradient(1.5px 1.5px at 55% 36%,var(--star),transparent),radial-gradient(1px 1px at 90% 52%,var(--star),transparent),radial-gradient(1px 1px at 6% 62%,var(--star),transparent)}
.scene::before{content:"";position:absolute;left:50%;bottom:calc(max(32vw,220px) - 150vw);width:150vw;height:150vw;transform:translateX(-50%);border-radius:50%;background:radial-gradient(circle at 50% 0,var(--planet),var(--planet-2) 55%);box-shadow:0 -2px 0 var(--rim),0 -6px 30px var(--glow),0 -30px 120px var(--glow-2),inset 0 24px 60px var(--inner)}
nav{display:flex;justify-content:space-between;align-items:center;gap:10px 16px;padding:20px clamp(20px,4vw,56px)}
/* scrolling pages keep the header in view (chat pages already scroll only their middle) */
body.page>nav{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 72%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.brand__symbol{width:38px;height:38px}
.brand__word{color:var(--ink);letter-spacing:.22em;font-size:clamp(13px,1.1vw + 10px,16px);font-weight:700;line-height:1}
.navr{display:flex;align-items:center;gap:clamp(16px,3vw,40px)}
nav ul{display:flex;gap:clamp(16px,3vw,40px);list-style:none;margin:0;padding:0}
nav li a{font-size:12.5px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;border-bottom:1px solid transparent;padding:6px 0}
nav li a:hover,nav li a[aria-current]{border-color:var(--ink)}
.icon{flex:none;width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;background:transparent;color:var(--ink);cursor:pointer;transition:border-color .2s}
.icon:hover{border-color:var(--ink)}
.i-moon,[data-theme=light] .i-sun{display:none}[data-theme=light] .i-moon{display:block}
@media(max-width:640px){nav{flex-wrap:wrap}.navr{display:contents}nav ul{order:3;width:100%;justify-content:space-between}}
.stage{flex:1;overflow-y:auto;display:flex;flex-direction:column;padding:8px clamp(12px,3vw,56px) 24px}
.wrap{width:min(720px,100%);margin:auto auto 0;padding:clamp(20px,4vw,40px)}
/* one frosted panel behind all reading text, so the arc never sits directly under words */
.wrap,.doc{background:var(--veil);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border:1px solid var(--line);border-radius:24px}
.hero{max-height:900px;transition:max-height .7s,opacity .5s,margin .7s}
body.chat .hero{max-height:0;opacity:0;overflow:hidden;margin:0}
body.chat .wrap{margin:0 auto}
h1{margin:0;font-size:clamp(32px,6vw,64px);font-weight:300;line-height:1.08;letter-spacing:.01em}
.sub{margin:18px 0 0;max-width:46ch;color:var(--mute);font-size:clamp(16px,1.6vw,19px)}
.story{margin:clamp(24px,4.5vh,44px) 0 0;padding-left:20px;border-left:1px solid var(--line)}
.story p{margin:0 0 10px;font-size:clamp(16px,1.5vw,18px);font-weight:300;max-width:52ch}
.story p.note{color:var(--mute);font-size:13px;margin:12px 0 0}
.beat,.fade{opacity:0;transform:translateY(10px);transition:opacity .5s,transform .5s}
.on{opacity:1;transform:none}
.ask{margin:clamp(22px,4vh,36px) 0 0;font-size:12.5px;font-weight:500;letter-spacing:.22em;text-transform:uppercase}
.alts{margin:14px 0 0;color:var(--mute);font-size:14.5px}.alts a{color:var(--ink);text-decoration:underline}
#log{display:flex;flex-direction:column;gap:12px;padding-top:8px}
.m{max-width:86%;padding:10px 0;font-size:16.5px;white-space:pre-wrap}
.m.a{align-self:flex-start}.m.u{background:var(--bubble);padding:11px 18px;border-radius:22px;align-self:flex-end}.m.t{color:var(--mute);align-self:flex-start}
.dock{padding:12px clamp(12px,3vw,56px) calc(14px + env(safe-area-inset-bottom,0px))}
.dock>*{width:min(720px,100%);margin-left:auto;margin-right:auto}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
body.chat .chips{display:none}
.chip{font:inherit;font-size:13.5px;color:var(--soft);background:var(--surface);backdrop-filter:blur(6px);border:1px solid var(--line);border-radius:999px;padding:8px 16px;cursor:pointer;transition:color .2s,border-color .2s}
.chip:hover{color:var(--ink);border-color:var(--ink)}
#sheet{border:1px solid var(--line);border-radius:20px;background:var(--panel);padding:14px 18px;margin-bottom:10px;font-size:14.5px;color:var(--mute);display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;justify-content:space-between}
#sheet[hidden]{display:none}#sheet div{display:flex;gap:10px}
#sheet a{text-decoration:underline}#sheet a[href^=mailto]{color:var(--ink)}
.b{display:inline-flex;align-items:center;gap:8px;font:inherit;font-size:12px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--ink);background:var(--surface);backdrop-filter:blur(6px);border:1px solid var(--ink);border-radius:999px;padding:11px 18px;cursor:pointer;transition:background .2s,color .2s}
.b:hover,.b.fill{background:var(--ink);color:var(--bg)}.b.fill:hover{background:transparent;color:var(--ink)}
#f{display:flex;align-items:flex-end;gap:8px;border:1px solid var(--field-line);border-radius:28px;background:var(--field);backdrop-filter:blur(12px);padding:8px;box-shadow:0 8px 40px var(--shadow)}
#f:focus-within{border-color:var(--mute)}
textarea{flex:1;min-width:0;resize:none;background:transparent;border:0;color:var(--ink);font:inherit;font-size:16px;line-height:1.45;padding:10px 6px 10px 14px;max-height:160px}
textarea:focus{outline:0}textarea::placeholder{color:var(--mute);opacity:.75}
#f button{flex:none;width:40px;height:40px;border-radius:50%;border:0;background:var(--ink);color:var(--bg);display:grid;place-items:center;cursor:pointer;transition:opacity .2s,transform .2s}
#f button:disabled{opacity:.25;cursor:default}
#f button:not(:disabled):hover{transform:scale(1.06)}
.fine{margin-top:10px;font-size:12px;color:var(--mute);letter-spacing:.04em;text-align:center}
.fine a{text-decoration:underline}
/* content pages (services, about, products) scroll as a normal document */
body.page{height:auto;min-height:100%}
.doc{width:min(800px,100% - 2*clamp(12px,3vw,56px));margin:clamp(4px,2vh,24px) auto clamp(120px,22vw,240px);padding:clamp(22px,5vw,56px)}
.doc section{margin-top:clamp(56px,9vh,96px)}
.doc h2{margin:0 0 12px;font-size:clamp(26px,3.4vw,36px);font-weight:300;line-height:1.15}
.doc h3{margin:0 0 6px;font-size:clamp(20px,2.2vw,24px);font-weight:400;line-height:1.25}
.doc p,.doc li{font-size:clamp(16px,1.4vw,17.5px);max-width:62ch}
.doc p{margin:0 0 14px}.doc strong{font-weight:500}
.doc ul,.doc ol{margin:0 0 14px;padding-left:20px}.doc li{margin:0 0 6px}.doc li::marker{color:var(--mute)}
.lead{color:var(--mute)}.doc .story+p{margin-top:28px}
.svc{padding-top:28px;margin-top:36px;border-top:1px solid var(--line)}
.svc .tag{color:var(--mute);font-size:clamp(17px,1.6vw,19px);font-weight:300;margin-bottom:18px}
.ico{display:block;width:28px;height:28px;margin-bottom:14px}
.go{display:inline-flex;align-items:center;gap:6px;border-bottom:1px solid var(--line);padding-bottom:2px;transition:border-color .2s}.go:hover{border-color:var(--ink)}
.go svg,.b svg{width:16px;height:16px}
.cta{margin-top:clamp(56px,9vh,96px);padding:clamp(22px,4vw,36px);border:1px solid var(--line);border-radius:20px;background:var(--surface);backdrop-filter:blur(6px)}
.cta p{font-size:clamp(18px,2vw,22px);font-weight:300}.cta small{display:block;margin-top:14px;color:var(--mute);font-size:13px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;margin:18px 0 22px}
.card{display:block;padding:16px 18px;border:1px solid var(--line);border-radius:16px;background:var(--surface);backdrop-filter:blur(6px);transition:border-color .2s}
.card:hover{border-color:var(--ink)}.card b{display:block;font-weight:500}.card span{color:var(--mute);font-size:14.5px}
.foot{padding:24px clamp(20px,4vw,56px) calc(24px + env(safe-area-inset-bottom,0px));text-align:center;font-size:12px;color:var(--mute);letter-spacing:.04em}
.foot a{text-decoration:underline}
/* the S cube: every face IS the logo (a square cut by two lines), so whichever way it turns, Silogus is facing you */
:root{--cube-face:#0b0806;--cube-edge:rgba(255,206,160,.32);--cube-cut:#ffe2bd;--cube-cut-glow:#ffb86bcc;--cube-cut-far:#e8794f88;--cube-glow:rgba(255,150,80,.22)}
:root[data-theme=light]{--cube-face:#f5f8fd;--cube-edge:rgba(79,141,253,.45);--cube-cut:#4f8dfd;--cube-cut-glow:#4f8dfdaa;--cube-cut-far:#1d5fe055;--cube-glow:rgba(79,141,253,.28)}
.cube{--s:84px;--h:calc(var(--s) / 2);position:relative;width:var(--s);height:var(--s);margin:6px 0 30px 6px;perspective:calc(var(--s) * 6)}
.cube::before{content:"";position:absolute;inset:-60%;background:radial-gradient(closest-side,var(--cube-glow),transparent)}
.cube__y,.cube__x{position:absolute;inset:0;transform-style:preserve-3d}
.cube__y{animation:cube-y 32s linear infinite}.cube__x{animation:cube-x 47s linear infinite}
@keyframes cube-y{to{transform:rotateY(360deg)}}
@keyframes cube-x{from{transform:rotateX(-24deg)}to{transform:rotateX(336deg)}}
.cube i{position:absolute;inset:0;background:var(--cube-face);border:1px solid var(--cube-edge)}
/* the two cuts, in the logo's exact proportions (24-unit square: cuts 2 units thick, 7 units from the open edge) */
.cube i::before,.cube i::after{content:"";position:absolute;height:8.33%;background:var(--cube-cut);box-shadow:0 0 calc(var(--s) * .05) var(--cube-cut-glow),0 0 calc(var(--s) * .14) var(--cube-cut-far)}
.cube i::before{top:29.17%;left:29.17%;right:0}
.cube i::after{top:62.5%;left:0;right:29.17%}
.cube .f1{transform:translateZ(var(--h))}.cube .f2{transform:rotateY(180deg) translateZ(var(--h))}
.cube .f3{transform:rotateY(90deg) translateZ(var(--h))}.cube .f4{transform:rotateY(-90deg) translateZ(var(--h))}
.cube .f5{transform:rotateX(90deg) translateZ(var(--h))}.cube .f6{transform:rotateX(-90deg) translateZ(var(--h))}
body.chat .hero .cube{display:none}
.hero .cube{cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none}.hero .cube:active{cursor:grabbing}
/* tiny cube shown while Logus is thinking */
.cube.mini{--s:15px;display:inline-block;vertical-align:-2px;margin:0 10px 0 2px}.cube.mini::before{inset:-50%}
.cube.mini .cube__y{animation-duration:1.1s}.cube.mini .cube__x{animation-duration:1.7s}
/* wide screens: the cube stands beside the text panel instead of above the headline */
@media(min-width:1280px){.wrap{position:relative}.hero .cube{--s:168px;position:absolute;left:calc(100% + clamp(64px,7vw,128px));top:calc(50% - var(--h));margin:0}}
@media(prefers-reduced-motion:reduce){.cube__y,.cube__x{animation:none}.cube__x{transform:rotateX(-24deg) rotateY(38deg)}
.beat,.fade,.hero{transition:none;opacity:1;transform:none}}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}

/* blog */
@media(max-width:640px){nav ul{flex-wrap:wrap;row-gap:8px}nav li a{letter-spacing:.14em}}
.pushbar{position:sticky;top:0;z-index:10;display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;justify-content:center;padding:10px 16px;background:var(--panel);border-bottom:1px solid var(--line);font-size:14.5px;color:var(--soft);text-align:center}
.pushbar[hidden],.pushbar [hidden]{display:none}.pushbar .b{padding:8px 14px}
.posts{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;margin-top:28px}
.post{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface);transition:border-color .2s}
.post:hover{border-color:var(--ink)}.post div{padding:14px 16px 18px}
@media(min-width:1600px){.posts{grid-template-columns:repeat(auto-fill,minmax(190px,1fr))}} /* big monitors: 3 smaller cards per row */
.post img,.art-img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;background:var(--panel)}
.doc .post h2{margin:6px 0 8px;font-size:19px;font-weight:500;line-height:1.3}
.doc .post p{margin:0;font-size:14.5px;color:var(--mute)}
.meta{display:block;color:var(--mute);font-size:13px;letter-spacing:.04em}
.art-img{border-radius:16px;margin:8px 0 28px}
.doc article h2{margin-top:36px}.doc article h1{margin:10px 0 22px;font-size:clamp(30px,4.6vw,48px)}
.pushbar .x{font:inherit;font-size:20px;line-height:1;color:var(--mute);background:none;border:0;padding:4px 8px;cursor:pointer}.pushbar .x:hover{color:var(--ink)}
.pushbar .steps{flex-basis:100%;max-width:520px;margin:4px auto 2px;padding-left:22px;font-size:14.5px;text-align:left}.pushbar .steps li{margin:4px 0}.pushbar .steps svg{vertical-align:-2px}.pushbar .steps .tip{list-style:none;margin-left:-22px;color:var(--mute);font-size:13px}
/* language switcher (built by theme.js). Flags are SVG, not emoji: Windows doesn't draw flag emojis */
.flag{display:inline-block;flex:none;width:21px;height:14px;border-radius:3px;background:center/cover no-repeat;box-shadow:0 0 0 1px var(--line)}
.flag-en{background-image:url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 60 30'><clipPath id='t'><path d='M30,15h30v15zv15h-30zh-30v-15zv-15h30z'/></clipPath><path d='M0,0v30h60v-30z' fill='%23012169'/><path d='M0,0L60,30M60,0L0,30' stroke='%23fff' stroke-width='6'/><path d='M0,0L60,30M60,0L0,30' clip-path='url(%23t)' stroke='%23C8102E' stroke-width='4'/><path d='M30,0v30M0,15h60' stroke='%23fff' stroke-width='10'/><path d='M30,0v30M0,15h60' stroke='%23C8102E' stroke-width='6'/></svg>")}
.flag-pt{background-image:url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 14'><rect width='20' height='14' fill='%23009C3B'/><path d='M10 1.5 18.5 7 10 12.5 1.5 7z' fill='%23FFDF00'/><circle cx='10' cy='7' r='3.4' fill='%23002776'/><path d='M6.8 6.2c2.2-.4 4.5.1 6.4 1.4' stroke='%23fff' stroke-width='.7' fill='none'/></svg>")}
.flag-es{background-image:url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 3 2'><rect width='3' height='2' fill='%23AA151B'/><rect y='.5' width='3' height='1' fill='%23F1BF00'/></svg>")}
.flag-it{background-image:url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 3 2'><rect width='1' height='2' fill='%23009246'/><rect x='1' width='1' height='2' fill='%23fff'/><rect x='2' width='1' height='2' fill='%23CE2B37'/></svg>")}
.lang{position:relative;min-width:82px;height:34px}
.lang__btn{display:flex;align-items:center;gap:8px;height:34px;font:inherit;font-size:12px;font-weight:500;letter-spacing:.14em;color:var(--ink);background:transparent;border:1px solid var(--line);border-radius:999px;padding:0 10px;cursor:pointer;transition:border-color .2s}
.lang__btn:hover,.lang__btn[aria-expanded=true]{border-color:var(--ink)}
.lang__btn::after{content:"";width:6px;height:6px;margin:-3px 2px 0 0;border:solid currentColor;border-width:0 1.5px 1.5px 0;transform:rotate(45deg)}
.lang__list{position:absolute;right:0;top:calc(100% + 8px);z-index:40;min-width:180px;margin:0;padding:6px;list-style:none;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:0 12px 40px var(--shadow)}
nav .lang__list{display:block;width:auto;order:0;gap:0}.lang__list:focus{outline:none}
.lang__list[hidden]{display:none}
.lang__list li{display:flex;align-items:center;gap:12px;padding:9px 12px;border-radius:10px;font-size:14.5px;letter-spacing:0;text-transform:none;cursor:pointer}
.lang__list li:hover,.lang__list li.active{background:var(--bubble)}.lang__list li[aria-selected=true]{font-weight:500}
@media(max-width:640px){.lang{margin-left:auto}}
/* blog article editing (blog-edit.js, signed-in directors only) */
.edit-pen{display:inline-grid;place-items:center;width:34px;height:34px;vertical-align:middle;border:1px solid var(--line);border-radius:50%;background:var(--surface);color:var(--ink);cursor:pointer;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);transition:border-color .2s}
.edit-pen:hover{border-color:var(--ink)}
.art-img-wrap{position:relative}.art-img-wrap .edit-pen{position:absolute;top:12px;right:12px}
.edit-dlg{width:min(1100px,100% - 24px);max-height:calc(100% - 24px);border:1px solid var(--line);border-radius:20px;background:var(--panel);color:var(--ink);padding:clamp(16px,3vw,28px)}
.edit-dlg::backdrop{background:#000a;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
.edit-dlg form{display:flex;flex-direction:column;gap:12px}
.edit-dlg h2{margin:0;font-weight:300}
.edit-dlg .fld{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--mute)}
.edit-dlg input,.edit-dlg textarea{font:inherit;font-size:15px;color:var(--ink);background:var(--field);border:1px solid var(--field-line);border-radius:10px;padding:9px 12px;width:100%;resize:vertical}
.edit-dlg textarea.md{font-family:ui-monospace,Consolas,monospace;font-size:14px;line-height:1.5;min-height:320px}
.edit-dlg .split{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.edit-dlg .preview{color:var(--ink);font-size:15px;border:1px solid var(--line);border-radius:10px;padding:4px 16px;max-height:520px;overflow:auto;background:var(--bg)}
.edit-dlg .hint{color:var(--mute);font-size:13px;margin:0}.edit-dlg code{font-size:12.5px;background:var(--bubble);padding:1px 5px;border-radius:5px}
.edit-dlg .actions{display:flex;gap:10px;flex-wrap:wrap}.edit-dlg .err{color:#e5484d;margin:0}
.edit-dlg img.pick{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;margin:12px 0}