/* Yektora. Calm, information-first; the product screens carry the visuals. */
:root{
  --bg:#FFFFFF; --surface:#FFFFFF; --sunk:#F3F6F9; --fg:#14212B; --muted:#4A5A66; --line:#DCE3EA;
  --brand:#004B8E; --brand-fg:#FFFFFF; --link:#004B8E; --node:#F78B2D;
  --ok:#23704A; --warn:#A54E0B; --bad:#B42318; --ok-fill:#B9E3C9;
  --cold:#7FA8E0; --cool:#B9D2F0; --warm:#F4C98A; --hot:#E98A6B;
  --m-energy:#F78B2D; --m-parking:#004B8E; --m-parking-strong:#00366A; --m-buildings:#3D74AE;
  --m-industrial:#4A5A66; --m-ops:#004B8E; --m-intel:#A54E0B;
  --display:Figtree,ui-sans-serif,system-ui,sans-serif;
  --body:Figtree,ui-sans-serif,system-ui,sans-serif;
  --mono:Figtree,ui-sans-serif,system-ui,sans-serif;
  --r:12px; --gutter:20px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0B1A2A; --surface:#12263B; --sunk:#0F2033; --fg:#EEF2F6; --muted:#A9B8C8; --line:#25405C;
  --brand:#E3ECF5; --brand-fg:#004B8E; --link:#FFB273; --node:#F78B2D;
  --ok:#5FCB92; --warn:#FFB273; --bad:#FF8A7A; --ok-fill:#2F6B48;
  --cold:#3D6AA8; --cool:#2E4C73; --warm:#8A6420; --hot:#A3452C;
  --m-energy:#F78B2D; --m-parking:#9FC3E6; --m-parking-strong:#E3ECF5; --m-buildings:#9FC3E6;
  --m-industrial:#A9B8C8; --m-ops:#E3ECF5; --m-intel:#FFB273;
  color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0B1A2A; --surface:#12263B; --sunk:#0F2033; --fg:#EEF2F6; --muted:#A9B8C8; --line:#25405C;
  --brand:#E3ECF5; --brand-fg:#004B8E; --link:#FFB273; --node:#F78B2D;
  --ok:#5FCB92; --warn:#FFB273; --bad:#FF8A7A; --ok-fill:#2F6B48;
  --cold:#3D6AA8; --cool:#2E4C73; --warm:#8A6420; --hot:#A3452C;
  --m-energy:#F78B2D; --m-parking:#9FC3E6; --m-parking-strong:#E3ECF5; --m-buildings:#9FC3E6;
  --m-industrial:#A9B8C8; --m-ops:#E3ECF5; --m-intel:#FFB273;
  color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 var(--body);padding-inline:var(--gutter);padding-block:0}
.wrap{max-width:1140px;margin-inline:auto}
h1,h2,h3{font-family:var(--display);line-height:1.15;text-wrap:balance;margin:0}
h1{font-size:clamp(2rem,4.4vw,3.2rem);font-weight:700;letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,2.8vw,2.05rem);font-weight:700;letter-spacing:-.01em}
h3{font-size:1.08rem;font-weight:600}
p{margin:0}
a{color:var(--link)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--link);outline-offset:2px}
.eyebrow{font:500 .74rem/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.lede{color:var(--muted);font-size:1.1rem;max-width:62ch}
.muted{color:var(--muted)}
.stack{display:grid;gap:16px;align-content:start}
.stack-lg{display:grid;gap:24px;align-content:start}

.preview-bar{font:500 .78rem/1.4 var(--mono);color:var(--muted);text-align:center;padding-block:8px;border-bottom:1px dashed var(--line);margin-inline:calc(-1 * var(--gutter));padding-inline:var(--gutter)}

/* header */
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:var(--bg);border-bottom:1px solid var(--line);margin-inline:calc(-1 * var(--gutter));padding-inline:var(--gutter)}
.nav{display:flex;align-items:center;gap:22px;padding-block:13px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--fg)}
.brand span{font:600 1.32rem/1 var(--display);letter-spacing:-.01em}
.menu{display:flex;gap:20px;list-style:none;margin:0;padding:0;flex-wrap:wrap;align-items:center}
.menu > li > a,.menu summary{color:var(--fg);text-decoration:none;font-weight:500;font-size:.95rem;cursor:pointer}
.menu a[aria-current="page"]{color:var(--link)}
.menu details{position:relative}
.menu summary{list-style:none}
.menu summary::-webkit-details-marker{display:none}
.menu summary::after{content:"";display:inline-block;width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-3px);margin-left:7px}
.dropdown{position:absolute;top:calc(100% + 10px);left:-12px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px;display:grid;min-width:250px;box-shadow:0 16px 40px -20px rgba(0,75,142,.35);z-index:20}
.dropdown a{display:flex;gap:10px;align-items:center;padding:8px 10px;border-radius:7px;text-decoration:none;color:var(--fg);font-size:.93rem}
.dropdown a:hover{background:var(--sunk)}
.dot{width:9px;height:9px;border-radius:3px;display:inline-block;flex:none}
.nav .cta{margin-left:auto}
.btn{display:inline-flex;align-items:center;gap:8px;font:600 .95rem/1 var(--display);padding:12px 18px;border-radius:8px;text-decoration:none;border:1px solid var(--brand);cursor:pointer}
.btn.primary{background:var(--brand);color:var(--brand-fg)}
.btn.ghost{background:transparent;color:var(--fg);border-color:var(--line)}
.btn:hover{filter:brightness(1.08)}
.actions{display:flex;gap:12px;flex-wrap:wrap}

/* sections */
section{padding-block:72px;border-bottom:1px solid var(--line)}
section.tight{padding-block:48px}
section:last-of-type{border-bottom:0}
.hero{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center;padding-block:56px 64px}
.hero > *,.split > *,.two > *,.contact > *{min-width:0}
.page-hero{padding-block:56px 48px;display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.page-hero > *{min-width:0}
.crumbs{font:500 .78rem var(--mono);color:var(--muted);display:flex;gap:8px;flex-wrap:wrap}
.crumbs a{color:var(--muted)}
.proto{display:flex;gap:8px;flex-wrap:wrap}
.proto span{font:500 .78rem/1 var(--mono);padding:6px 9px;border:1px solid var(--line);border-radius:6px;color:var(--muted);background:var(--surface)}
.split{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:start}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* illustrations */
.illus{margin:0;display:grid;gap:8px}
.illus svg{width:100%;height:auto;display:block;max-width:100%}
.illus figcaption{font:400 .72rem var(--mono);color:var(--muted);text-align:right}
.illus:not(.diagram) svg{filter:drop-shadow(0 18px 30px rgba(0,75,142,.16))}
.diagram{overflow-x:auto}
.diagram svg{min-width:560px}

/* steps */
.steps{display:grid;list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{display:grid;grid-template-columns:44px 1fr;gap:14px;padding-block:18px;border-top:1px solid var(--line)}
.steps li:first-child{border-top:0;padding-top:0}
.steps li::before{counter-increment:s;content:counter(s,decimal-leading-zero);font:500 .85rem/1.6 var(--mono);color:var(--muted)}
.steps p{color:var(--muted);margin-top:4px}

/* modules grid */
.sec-head{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.mods{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.mod{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;display:grid;gap:10px;align-content:start;min-width:0;text-decoration:none;color:var(--fg);transition:border-color .15s}
.mod:hover{border-color:var(--muted)}
.mod .name{display:flex;align-items:center;gap:9px;font:600 1.05rem var(--display)}
.mod p{color:var(--muted);font-size:.95rem}
.mod .more{font:500 .82rem var(--mono);color:var(--link);margin-top:4px}

/* feature list */
.features{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px;list-style:none;margin:0;padding:0}
.features li{padding-block:16px;border-top:1px solid var(--line);display:grid;gap:4px;min-width:0}
.features b{font-family:var(--display);font-weight:600}
.features span{color:var(--muted);font-size:.95rem}

/* results */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case{border-top:3px solid var(--line);padding-top:18px;display:grid;gap:10px;align-content:start;min-width:0}
.case .who{font:500 .74rem var(--mono);color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.case .fig{font:700 2.1rem/1 var(--display);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.case p{color:var(--muted);font-size:.95rem}
.case dl{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;margin:6px 0 0;font-size:.92rem}
.case dt{font:500 .74rem/1.9 var(--mono);color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.case dd{margin:0;min-width:0}

/* boxes */
.box{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:28px;display:grid;gap:12px;align-content:start;min-width:0}
.box p{color:var(--muted)}
.powered{display:inline-flex;align-items:center;gap:8px;font:500 .8rem var(--mono);color:var(--muted);border:1px dashed var(--line);border-radius:6px;padding:8px 10px;width:max-content;max-width:100%}
.note{font-size:.86rem;color:var(--muted)}
.callout{border-left:3px solid var(--brand);padding:4px 0 4px 16px;color:var(--muted)}

/* faq */
.faq{display:grid;gap:0}
.faq details{border-top:1px solid var(--line);padding-block:16px}
.faq summary{font:600 1rem var(--display);cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:400 1.3rem/1 var(--mono);color:var(--muted)}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--muted);margin-top:10px;max-width:72ch}

/* about */
.about{display:grid;grid-template-columns:auto 1fr;gap:40px;align-items:center}
.about > *{min-width:0}
.fa{font:600 1.4rem system-ui,sans-serif;color:var(--fg)}

/* contact */
.contact{display:grid;grid-template-columns:1fr 1.1fr;gap:48px}
form{display:grid;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:24px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:grid;gap:6px;font-size:.85rem;font-weight:500}
input,select,textarea{font:inherit;font-size:.95rem;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);width:100%}
textarea{min-height:104px;resize:vertical}
.facts{display:grid;gap:14px}
.facts div{display:grid;gap:2px}
.facts span{font:500 .72rem var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.facts b{font-weight:500;user-select:all}

/* prose (legal) */
.prose{max-width:72ch;display:grid;gap:14px}
.prose h2{font-size:1.25rem;margin-top:18px}
.prose p,.prose li{color:var(--muted)}
.prose ul{margin:0;padding-left:20px;display:grid;gap:6px}

/* cta band */
.band{background:var(--brand);color:var(--brand-fg);border-radius:16px;padding:40px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.band p{opacity:.85;max-width:56ch}
.band .btn{background:var(--brand-fg);color:var(--brand);border-color:var(--brand-fg)}

/* footer */
footer.site{border-top:1px solid var(--line);margin-inline:calc(-1 * var(--gutter));padding-inline:var(--gutter);padding-block:40px 48px}
.fgrid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px}
.fgrid > *{min-width:0}
.fgrid h4{font:500 .74rem var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 12px}
.fgrid ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.fgrid a{color:var(--fg);text-decoration:none;font-size:.93rem}
.fgrid a:hover{color:var(--link)}
.legal{margin-top:32px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:.85rem}

@media (max-width:920px){
  .hero,.page-hero,.split,.contact,.about{grid-template-columns:1fr}
  .mods,.cases{grid-template-columns:1fr 1fr}
  .two,.features{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr 1fr}
  .menu{order:3;width:100%}
}
@media (max-width:560px){
  :root{--gutter:16px}
  section{padding-block:52px}
  .mods,.cases,.row,.fgrid{grid-template-columns:1fr}
  .nav .cta{display:none}
  .band{padding:28px}
  .dropdown{left:0;min-width:220px}
}
@media (prefers-reduced-motion:no-preference){
  .hero .illus{animation:rise .6s ease-out both}
  @keyframes rise{from{transform:translateY(8px)}to{transform:none}}
}