:root{
  --fog:#EDF0F5;
  --surface:#FFFFFF;
  --ink:#151A33;
  --slate:#5A627D;
  --line:#D5DAE5;
  --cobalt:#2747F5;
  --cobalt-soft:#E3E8FF;
  --onair:#F0435A;
  --display:"Bricolage Grotesque", system-ui, sans-serif;
  --body:"Atkinson Hyperlegible", system-ui, sans-serif;
  --measure:64ch;
  --gutter:clamp(16px, 4vw, 48px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--fog);color:var(--ink);font:400 1.0625rem/1.6 var(--body);-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit}
:focus-visible{outline:3px solid var(--cobalt);outline-offset:3px;border-radius:4px}
.wrap{max-width:1200px;margin:0 auto;padding:0 var(--gutter)}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;border-radius:6px;z-index:10}
.skip:focus{left:8px}

h1,h2,h3{font-family:var(--display);font-weight:700;letter-spacing:-0.02em;margin:0;line-height:1.05}
h2{font-size:clamp(2rem, 4vw, 3rem);font-variation-settings:"wdth" 85;max-width:20ch}
h3{font-size:1.25rem;letter-spacing:-0.01em;line-height:1.25}
p{margin:0}
.lede{color:var(--slate);font-size:1.1875rem;max-width:var(--measure)}

/* Header */
.site-head{padding:20px 0}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--display);font-weight:700;font-size:1.3rem;letter-spacing:-0.02em}
.brand svg{width:30px;height:30px}
.nav{display:flex;gap:28px;align-items:center}
.nav a{text-decoration:none;color:var(--slate);font-weight:700;font-size:.95rem}
.nav a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:700 1rem/1 var(--body);padding:14px 22px;border-radius:999px;border:2px solid var(--ink);background:var(--ink);color:#fff;text-decoration:none;cursor:pointer}
.btn:hover{background:var(--cobalt);border-color:var(--cobalt)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.ghost:hover{background:var(--surface);color:var(--ink);border-color:var(--ink)}
.nav .btn{padding:10px 18px;color:#fff}
@media (max-width:820px){.nav a:not(.btn){display:none}}

/* Hero */
.hero{padding:clamp(40px,7vw,96px) 0 clamp(64px,8vw,112px)}
.hero .wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(32px,5vw,72px);align-items:center}
@media (max-width:960px){.hero .wrap{grid-template-columns:1fr}}
.status{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:.9rem;color:var(--slate);margin-bottom:28px}
.status i{width:9px;height:9px;border-radius:50%;background:var(--onair);box-shadow:0 0 0 4px rgba(240,67,90,.18)}
.hero h1{font-size:clamp(2.75rem, 6.6vw, 5.4rem);font-weight:800;font-variation-settings:"wdth" 78;letter-spacing:-0.035em;line-height:.98;max-width:12ch}
.hero .lede{margin-top:24px;max-width:46ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.hero-note{margin-top:18px;font-size:.92rem;color:var(--slate)}

/* Console */
.console{background:var(--ink);color:#fff;border-radius:22px;padding:22px;box-shadow:0 30px 60px -30px rgba(21,26,51,.55)}
.console-top{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:.88rem;color:#AEB5CF}
.onair{display:inline-flex;align-items:center;gap:8px;color:#fff;font-weight:700}
.onair i{width:8px;height:8px;border-radius:50%;background:var(--onair)}
@media (prefers-reduced-motion: no-preference){.onair i{animation:pulse 1.6s ease-in-out infinite}}
@keyframes pulse{50%{opacity:.35}}
.lane{margin-top:16px;border-radius:14px;padding:16px 18px;min-height:132px}
.lane.floor{background:#222849}
.lane.out{background:var(--cobalt)}
.lane-head{display:flex;justify-content:space-between;align-items:center;font-size:.85rem;color:rgba(255,255,255,.72);margin-bottom:10px}
.lane-head b{color:#fff}
.lane-text{font-family:var(--display);font-size:clamp(1.05rem,1.8vw,1.3rem);line-height:1.4;font-weight:500;letter-spacing:-0.005em}
.lane-text[dir="rtl"]{font-family:"Noto Sans Arabic", var(--display);line-height:1.7}
.lane-text .w{opacity:0;transition:opacity .25s}
.lane-text .w.on{opacity:1}
.lane-text .w.now{color:#fff;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:5px;text-decoration-color:rgba(255,255,255,.5)}
.wave{display:flex;gap:3px;align-items:center;height:18px}
.wave span{width:3px;border-radius:2px;background:rgba(255,255,255,.7);height:30%}
@media (prefers-reduced-motion: no-preference){
  .wave span{animation:bar 1s ease-in-out infinite}
  .wave span:nth-child(2){animation-delay:-.2s}.wave span:nth-child(3){animation-delay:-.5s}
  .wave span:nth-child(4){animation-delay:-.1s}.wave span:nth-child(5){animation-delay:-.7s}
}
@keyframes bar{50%{height:100%}}
.span-meter{display:flex;align-items:center;gap:10px;margin:14px 2px 0;font-size:.85rem;color:#AEB5CF}
.span-meter .track{flex:1;height:4px;border-radius:2px;background:#2E3560;position:relative;overflow:hidden}
.span-meter .track b{position:absolute;inset:0 auto 0 0;width:22%;background:#8FA2FF;border-radius:2px}
.channels{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.channels button{font:700 .9rem/1 var(--body);color:#fff;background:transparent;border:1.5px solid #3A4270;padding:9px 14px;border-radius:999px;cursor:pointer}
.channels button:hover{border-color:#8FA2FF}
.channels button[aria-pressed="true"]{background:#fff;color:var(--ink);border-color:#fff}

/* Sections */
section{padding:clamp(64px,9vw,120px) 0}
.sec-head{display:grid;gap:18px;margin-bottom:clamp(36px,5vw,64px)}
.band{background:var(--surface);border-block:1px solid var(--line)}

/* Steps */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,48px);counter-reset:s}
@media (max-width:860px){.steps{grid-template-columns:1fr}}
.steps li{counter-increment:s;border-top:2px solid var(--ink);padding-top:22px}
.steps li::before{content:counter(s);display:block;font-family:var(--display);font-weight:800;font-size:3.2rem;line-height:1;color:var(--cobalt);margin-bottom:18px;font-variation-settings:"wdth" 75}
.steps p{color:var(--slate);margin-top:10px;max-width:38ch}

/* Features */
.features{display:grid;grid-template-columns:repeat(2,1fr);gap:0 clamp(32px,5vw,80px);margin:0}
@media (max-width:760px){.features{grid-template-columns:1fr}}
.features div{padding:26px 0;border-top:1px solid var(--line)}
.features dt{font-family:var(--display);font-weight:700;font-size:1.25rem;letter-spacing:-0.01em}
.features dd{margin:8px 0 0;color:var(--slate);max-width:48ch}

/* Use cases */
.uses{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,80px);align-items:start}
@media (max-width:860px){.uses{grid-template-columns:1fr}}
.use-list{list-style:none;margin:0;padding:0}
.use-list li{display:grid;grid-template-columns:minmax(150px,auto) 1fr;gap:6px 24px;padding:20px 0;border-bottom:1px solid var(--line)}
.use-list li:first-child{border-top:1px solid var(--line)}
.use-list strong{font-family:var(--display);font-size:1.15rem}
.use-list span{color:var(--slate)}
@media (max-width:520px){.use-list li{grid-template-columns:1fr}}

/* Languages */
.langs{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;padding:0;list-style:none}
.langs li{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-weight:700;font-size:.95rem}
.langs li[lang="ar"],.langs li[lang="fa"]{font-family:"Noto Sans Arabic",var(--body)}
.fine{color:var(--slate);font-size:.92rem;margin-top:18px;max-width:var(--measure)}

/* Human + AI */
.pair{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:8px}
@media (max-width:760px){.pair{grid-template-columns:1fr}}
.pair article{border-radius:18px;padding:28px}
.pair article:first-child{background:var(--cobalt-soft)}
.pair article:last-child{background:var(--fog);border:1px solid var(--line)}
.pair ul{margin:14px 0 0;padding-left:1.1em;color:var(--slate)}
.pair li{margin:6px 0}

/* FAQ */
.faq{max-width:820px}
.faq details{border-top:1px solid var(--line);padding:4px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:24px;align-items:center;padding:20px 0;font-family:var(--display);font-weight:700;font-size:1.2rem;letter-spacing:-0.01em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:12px;height:12px;border-right:2.5px solid var(--ink);border-bottom:2.5px solid var(--ink);transform:rotate(45deg) translateY(-3px);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(-135deg) translateY(-3px)}
.faq details p{color:var(--slate);padding:0 0 22px;max-width:var(--measure)}

/* CTA */
.cta{background:var(--ink);color:#fff}
.cta .wrap{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,80px);align-items:center}
@media (max-width:860px){.cta .wrap{grid-template-columns:1fr}}
.cta h2{max-width:14ch}
.cta .lede{color:#AEB5CF;margin-top:18px}
form.join{display:grid;gap:14px}
form.join label{font-weight:700;font-size:.95rem;display:grid;gap:6px}
form.join input,form.join select{font:400 1rem var(--body);padding:14px 16px;border-radius:12px;border:1.5px solid #3A4270;background:#1E2444;color:#fff;width:100%}
form.join input::placeholder{color:#7F87A8}
form.join .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:520px){form.join .row{grid-template-columns:1fr}}
form.join .btn{background:#fff;color:var(--ink);border-color:#fff;justify-self:start;margin-top:6px}
form.join .btn:hover{background:var(--cobalt);color:#fff;border-color:var(--cobalt)}
.form-msg{min-height:1.5em;font-size:.95rem;color:#C9D1FF}

/* Footer */
.site-foot{padding:56px 0 40px;font-size:.95rem;color:var(--slate)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr}}
.site-foot h3{font-size:1rem;color:var(--ink);margin-bottom:12px}
.site-foot ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.site-foot a{text-decoration:none}
.site-foot a:hover{color:var(--ink);text-decoration:underline}
.legal{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:.88rem}

/* Language switch */
.lang-switch{display:inline-flex;border:1.5px solid var(--line);border-radius:999px;padding:3px;background:var(--surface)}
.lang-switch a,.lang-switch span{font-weight:700;font-size:.85rem;padding:6px 10px;border-radius:999px;text-decoration:none;color:var(--slate)}
.lang-switch span{background:var(--ink);color:#fff}
.nav .lang-switch a{display:inline}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Signal-flow diagram */
.flow{display:grid;grid-template-columns:1fr 40px 1.25fr 40px 1fr;align-items:center;margin-top:clamp(40px,5vw,64px)}
.flow-col{display:grid;gap:10px}
.flow-col h3{font-size:.95rem;color:var(--slate);font-family:var(--body);font-weight:700;letter-spacing:0;margin-bottom:2px}
.node{background:var(--fog);border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;font-weight:700;display:flex;gap:10px;align-items:center}
.node svg{width:20px;height:20px;flex:none;color:var(--cobalt)}
.engine{background:var(--ink);color:#fff;border-radius:20px;padding:22px}
.engine .brand-line{font-family:var(--display);font-weight:700;font-size:1.2rem}
.stages{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:8px}
.stages li{display:flex;justify-content:space-between;gap:12px;background:#222849;border-radius:10px;padding:10px 14px;font-size:.95rem}
.stages li small{color:#AEB5CF;font-size:.85rem}
.engine-glossary{margin-top:12px;font-size:.88rem;color:#AEB5CF}
.arrow{display:flex;justify-content:center;color:var(--slate)}
.arrow svg{width:32px;height:16px}
@media (max-width:900px){
  .flow{grid-template-columns:1fr}
  .arrow{padding:10px 0}
  .arrow svg{transform:rotate(90deg)}
}

/* Latency charts */
.latency{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(32px,5vw,72px);align-items:start}
@media (max-width:960px){.latency{grid-template-columns:1fr}}
.chart-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:clamp(20px,3vw,32px);display:grid;gap:40px}
figure{margin:0}
figcaption{display:grid;gap:4px;margin-bottom:18px}
figcaption strong{font-family:var(--display);font-size:1.15rem;letter-spacing:-0.01em}
figcaption span{color:var(--slate);font-size:.92rem}
.budget{display:flex;gap:2px;height:28px}
.budget div{position:relative;cursor:default}
.budget div:first-child{border-radius:6px 0 0 6px}
.budget div:last-child{border-radius:0 6px 6px 0}
.budget-legend{display:flex;gap:2px;margin-top:10px}
.budget-legend div{font-size:.85rem;line-height:1.35;color:var(--slate);padding-right:6px}
.budget-legend b{display:block;color:var(--ink);font-size:.95rem}
.budget-total{display:flex;justify-content:space-between;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-weight:700}
@media (max-width:560px){
  .budget-legend{flex-direction:column;gap:8px}
  .budget-legend div{width:auto!important;display:flex;gap:10px;align-items:baseline}
  .budget-legend div::before{content:"";width:10px;height:10px;border-radius:3px;background:var(--sw);flex:none;transform:translateY(1px)}
}
.timeline svg{width:100%;height:auto;overflow:visible}
.timeline .axis text,.timeline .track-label{font:400 12px var(--body);fill:var(--slate)}
.timeline .track-label{font-weight:700;fill:var(--ink)}
.timeline .grid{stroke:var(--line);stroke-width:1}
.timeline rect.chunk{rx:4}
.timeline .gap-label{font:700 12px var(--body);fill:var(--ink)}
.chart-tip{position:fixed;pointer-events:none;background:var(--ink);color:#fff;font-size:.85rem;padding:6px 10px;border-radius:8px;opacity:0;transition:opacity .12s;z-index:20;max-width:260px}
.timeline-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
@media (max-width:560px){.timeline-scroll svg{min-width:540px}}
.latency > *,.chart-card > *{min-width:0}

/* Interpreting modes: human = amber, AI = cobalt, hybrid = both */
:root{--human:#E59A2B;--human-soft:#FDF0DC;--human-ink:#7A4A06}
.md{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:7px;vertical-align:1px}
.md.h{background:var(--human)}
.md.ai{background:#8FA2FF}
.channels button[aria-pressed="true"] .md.ai{background:var(--cobalt)}
.mode-legend{display:flex;flex-wrap:wrap;gap:16px;margin-top:12px;font-size:.82rem;color:#AEB5CF}
.chip{display:inline-flex;align-items:center;font:700 .85rem/1 var(--body);padding:6px 12px;border-radius:999px;white-space:nowrap}
.chip.h{background:var(--human-soft);color:var(--human-ink)}
.chip.ai{background:var(--cobalt-soft);color:#1A2FB0}
.chip.hy{background:linear-gradient(90deg,var(--human-soft) 50%,var(--cobalt-soft) 50%);color:var(--ink)}
.modes-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:clamp(32px,5vw,72px);align-items:start}
@media (max-width:960px){.modes-grid{grid-template-columns:1fr}}
.modes-grid > *{min-width:0}
.mode-list{list-style:none;margin:0;padding:0}
.mode-list li{padding:24px 0;border-top:1px solid var(--line)}
.mode-list li:last-child{border-bottom:1px solid var(--line)}
.mode-list h3{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.mode-list p{color:var(--slate);margin-top:10px;max-width:52ch}
.plan{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:clamp(20px,3vw,32px)}
.plan-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;padding-bottom:16px;border-bottom:1px solid var(--line)}
.plan-head strong{font-family:var(--display);font-size:1.15rem;letter-spacing:-0.01em}
.plan-head span{color:var(--slate);font-size:.92rem}
.plan table{width:100%;border-collapse:collapse;margin-top:6px}
.plan th{text-align:left;font-size:.85rem;color:var(--slate);font-weight:400;padding:12px 0 8px}
.plan td{padding:14px 12px 14px 0;border-top:1px solid var(--line);vertical-align:middle}
.plan td:first-child{font-family:var(--display);font-weight:700;font-size:1.1rem;white-space:nowrap}
.plan td:last-child{color:var(--slate);font-size:.92rem;padding-right:0}
.plan-foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);color:var(--slate);font-size:.92rem}
@media (max-width:520px){.plan th:last-child,.plan td:last-child{display:none}}
.modes-guide{margin-top:clamp(40px,5vw,64px)}
.modes-guide article:first-child{background:var(--cobalt-soft)}
.modes-guide article:last-child{background:var(--human-soft);border:0}
.stages li.h{box-shadow:inset 3px 0 0 var(--human)}
.stages li.ai{box-shadow:inset 3px 0 0 #8FA2FF}