/* DevYield — landing page · Direction C (design brief v0.3) */
:root{
  --n-950:#111111; --n-800:#2B2B2B; --n-700:#3A3A3A; --n-600:#5E5E5E; --n-500:#7A7A7A; --n-400:#9A9A9A;
  --n-300:#C9C9C6; --n-200:#E8E8E6; --n-100:#F2F2F0; --n-50:#F8F8F7; --white:#FFFFFF;
  --blue:#253A9E; --blue-ring:rgba(37,58,158,.18);
  --pos:#119A5B; --neg:#D93B2B;
  --font:"Inter Tight",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --wrap:1120px; --gutter:32px;
  --r-ctl:8px; --r-panel:10px;
}
*{box-sizing:border-box} html,body{margin:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{background:var(--white);color:var(--n-950);font-family:var(--font);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
p,h1,h2,h3{margin:0}
img{display:block;max-width:100%}
button{font:inherit;color:inherit;cursor:pointer}
[id]{scroll-margin-top:72px}
:focus-visible{outline:none;box-shadow:0 0 0 2px #fff,0 0 0 4px var(--blue);border-radius:6px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.lbl{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--n-500)}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--n-950);color:#fff;padding:10px 16px}
.skip-link:focus{left:0}

.logo{font-size:24px;font-weight:500;letter-spacing:-.03em;display:inline-flex;align-items:baseline;gap:4px}
.logo sup{font-family:var(--mono);font-size:11px;color:var(--blue)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:44px;padding:0 20px;border-radius:999px;font-weight:500;font-size:15px;white-space:nowrap;border:1px solid transparent;transition:background .2s,color .2s,border-color .2s,transform .2s}
.btn:hover{transform:translateY(-1px)}
.btn--light{background:#fff;color:var(--n-950)}
.btn--ink{background:var(--n-950);color:#fff}
.btn--ink:hover{background:var(--n-800)}
.btn--glass{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.35);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn--glass:hover{background:rgba(255,255,255,.24)}
.btn--block{width:100%}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;color:#fff;transition:background .3s,color .3s,box-shadow .3s}
.nav__in{display:flex;align-items:center;gap:32px;height:68px;padding:0 32px;max-width:1440px;margin:0 auto}
.nav__links{display:flex;gap:26px;font-size:15px;opacity:.92}
.nav__links a:hover{opacity:1;text-decoration:underline;text-underline-offset:6px;text-decoration-thickness:1px}
.nav__cta{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav__login{font-size:15px;opacity:.92}
.nav .btn{height:38px;padding:0 16px;font-size:14.5px}
.nav.is-stuck{background:rgba(255,255,255,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);color:var(--n-950);box-shadow:0 1px 0 var(--n-200)}
.nav.is-stuck .btn--light{background:var(--n-950);color:#fff}
.nav__toggle{display:none;width:38px;height:38px;border:0;background:none;flex-direction:column;justify-content:center;gap:6px;padding:9px}
.nav__toggle span{display:block;height:1.5px;background:currentColor;transition:transform .25s}
.nav.is-open .nav__toggle span:first-child{transform:translateY(3.75px) rotate(45deg)}
.nav.is-open .nav__toggle span:last-child{transform:translateY(-3.75px) rotate(-45deg)}
.nav__mobile{display:none;flex-direction:column;padding:8px 24px 22px;background:#fff;color:var(--n-950);border-bottom:1px solid var(--n-200)}
.nav__mobile a{padding:13px 2px;border-bottom:1px solid var(--n-100);font-size:17px}
.nav__mobile a.btn{border:0;margin-top:14px;justify-content:center}
.nav.is-open{background:#fff;color:var(--n-950)}
.nav.is-open .nav__mobile{display:flex}

/* hero */
.hero{position:relative;height:100vh;min-height:640px;max-height:940px;color:#fff;display:flex;justify-content:center;text-align:center;overflow:hidden;background:#1d2433}
/* The timelapse plays once over its first-frame poster, then .is-still swaps in the
   final-frame image. Without JS, or with reduced motion, only the still shows. */
.hero__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero__video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .8s ease}
.js .hero__img{opacity:0}
.js .hero__video{opacity:1}
.js .hero.is-still .hero__img{opacity:1}
.js .hero.is-still .hero__video{opacity:0}
@media (prefers-reduced-motion:reduce){.hero__video{display:none}.js .hero__img{opacity:1}}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,12,24,.58) 0%,rgba(8,12,24,.44) 38%,rgba(8,12,24,.2) 66%,rgba(8,12,24,.55) 100%);pointer-events:none}
.hero__copy{position:relative;z-index:2;text-shadow:0 1px 18px rgba(8,12,24,.45);padding:clamp(130px,18vh,190px) 24px 0;max-width:900px}
.hero h1{font-size:clamp(40px,6.2vw,76px);line-height:1.02;letter-spacing:-.035em;font-weight:500}
.hero__copy>p{margin:20px auto 0;max-width:56ch;font-size:clamp(16px,1.5vw,19px);color:rgba(255,255,255,.88)}
.hero .hero__fine{margin-top:10px;font-size:14.5px;color:#fff}
.hero__cta{display:flex;gap:10px;justify-content:center;margin-top:28px;flex-wrap:wrap}
.ticker{position:absolute;z-index:2;left:0;right:0;bottom:0;display:flex;justify-content:center;gap:clamp(20px,5vw,64px);padding:22px 16px;font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.75);background:linear-gradient(0deg,rgba(0,0,0,.4),transparent);flex-wrap:wrap}
.ticker b{font-family:var(--font);font-size:15px;font-weight:500;letter-spacing:0;color:#fff;margin-left:10px;font-variant-numeric:tabular-nums}

/* statement blocks */
.block{padding:clamp(88px,12vw,140px) 0 0}
.glyph{width:56px;height:56px;margin-bottom:26px;color:var(--n-950)}
.big{font-size:clamp(28px,3.9vw,46px);line-height:1.12;letter-spacing:-.03em;font-weight:500;max-width:23ch}
.big .g{color:var(--n-400)}
.note{margin-top:22px;font-size:16px}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:56px;padding-top:28px;border-top:1px solid var(--n-200)}
.three h3,.mod h3{font-size:18px;font-weight:500;margin-bottom:8px;letter-spacing:-.01em}
.three p,.mod p{font-size:16px;color:var(--n-600);line-height:1.5}

/* showcase */
.showcase{padding:clamp(88px,12vw,140px) 0 0}
.sec-head{max-width:640px;margin-bottom:28px}
.sec-head h2{font-size:clamp(28px,3.9vw,46px);line-height:1.1;letter-spacing:-.03em;font-weight:500;margin-top:12px}
.sec-head p{margin-top:14px;font-size:17px;color:var(--n-600)}
.track{position:relative;display:inline-flex;align-items:center;gap:2px;background:var(--n-100);border-radius:10px;padding:3px;max-width:100%;overflow-x:auto;scrollbar-width:none}
.track button{position:relative;z-index:1;height:34px;padding:0 14px;border:0;background:none;border-radius:7px;color:var(--n-600);font-size:14.5px;font-weight:450;white-space:nowrap;transition:color .25s}
.track button:not(.on):hover{color:var(--n-950)}
.track button.on{color:#fff;font-weight:500}
.track .ind{position:absolute;z-index:0;top:3px;height:34px;border-radius:7px;background:var(--n-950);transition:left .32s cubic-bezier(.3,.7,.2,1),width .32s cubic-bezier(.3,.7,.2,1)}
.screen{margin-top:18px;border:1px solid var(--n-200);border-radius:12px;overflow:hidden;background:var(--n-50);box-shadow:0 40px 80px -50px rgba(0,0,0,.35)}
.screen__bar{display:flex;align-items:center;gap:6px;height:36px;padding:0 14px;border-bottom:1px solid var(--n-200);background:#fff}
.screen__bar span{width:9px;height:9px;border-radius:50%;background:var(--n-200)}
.screen__bar em{font-style:normal;font-family:var(--mono);font-size:11px;color:var(--n-500);margin:0 auto;padding-right:40px}
.screen__view{position:relative;width:100%;aspect-ratio:1440/900;overflow:hidden;background:var(--n-50)}
.screen__view iframe{position:absolute;left:0;top:0;width:1440px;height:900px;border:0;transform-origin:0 0;background:var(--n-50)}
.screen__full{font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;color:var(--n-500);margin-left:-40px}
.screen__full:hover{color:var(--n-950)}
.screen__tap{display:none}
@media (max-width:760px){
  .screen__full{display:none}
  .screen__view iframe{pointer-events:none}
  .screen__tap{display:flex;position:absolute;inset:0;align-items:flex-end;justify-content:center;padding-bottom:18px;background:linear-gradient(to top,rgba(255,255,255,.92),rgba(255,255,255,0) 55%);font-weight:500;color:var(--n-950)}
}
.screen__cap{margin-top:14px;font-size:14.5px;color:var(--n-600)}

/* modules */
.mods{display:grid;grid-template-columns:repeat(3,1fr);margin-top:56px;border-top:1px solid var(--n-200)}
.mod{padding:28px 32px 32px 0;border-bottom:1px solid var(--n-200)}
.mod .lbl{display:block;margin-bottom:14px}

/* the wall — rules written on brick */
.wall{--wall-bg:#AB6A4C;--wall-tint:58,20,6;position:relative;margin-top:clamp(88px,12vw,140px);min-height:clamp(640px,96vh,920px);display:flex;align-items:center;overflow:hidden;background:var(--wall-bg);color:#fff}
.wall--metal{--wall-bg:#7B8F7C;--wall-tint:12,30,18}
.wall--louvre{--wall-bg:#3C4A68;--wall-tint:8,14,34}
.wall .glyph{display:block;color:#fff;margin-bottom:22px;filter:drop-shadow(0 1px 10px rgba(var(--wall-tint),.4))}
.wall__lbl{display:block}
.wall__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.wall::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(var(--wall-tint),.42),rgba(var(--wall-tint),.24) 70%,rgba(var(--wall-tint),.18));pointer-events:none}
.wall--metal::after{background:linear-gradient(90deg,rgba(var(--wall-tint),.5),rgba(var(--wall-tint),.34) 70%,rgba(var(--wall-tint),.28))}
.wall__in{position:relative;z-index:1;width:100%;padding-top:clamp(72px,10vw,120px);padding-bottom:clamp(72px,10vw,120px);text-shadow:0 1px 16px rgba(var(--wall-tint),.35)}
.wall__lbl{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.85)}
.wall__h{margin-top:14px;margin-bottom:0;font-size:clamp(44px,7.4vw,104px);line-height:.98;letter-spacing:-.045em;font-weight:500;max-width:11ch}
.wall__sub{margin-top:22px;max-width:46ch;font-size:clamp(16px,1.5vw,19px);color:rgba(255,255,255,.92)}
.rules{list-style:none;margin:clamp(44px,6vw,72px) 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);column-gap:clamp(24px,4vw,56px)}
.rules li{padding:18px 0 22px;border-top:1px solid rgba(255,255,255,.55);font-size:15.5px;font-weight:450;line-height:1.4;color:rgba(255,255,255,.92)}
.rules span{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:rgba(255,255,255,.78);margin-bottom:10px}
.rules b{display:block;font-size:clamp(21px,2.2vw,28px);line-height:1.1;font-weight:500;letter-spacing:-.025em;color:#fff;margin-bottom:6px}
.js .rules li{opacity:0;transform:translateY(14px)}
.js .rules.is-in li{opacity:1;transform:none;transition:opacity .6s ease,transform .6s cubic-bezier(.22,1,.36,1)}
.js .rules.is-in li:nth-child(2){transition-delay:.08s}
.js .rules.is-in li:nth-child(3){transition-delay:.16s}
.js .rules.is-in li:nth-child(4){transition-delay:.24s}
.js .rules.is-in li:nth-child(5){transition-delay:.32s}
.js .rules.is-in li:nth-child(6){transition-delay:.40s}
@media (prefers-reduced-motion:reduce){.js .rules li{opacity:1!important;transform:none!important;transition:none}}
@media (max-width:960px){.rules{grid-template-columns:1fr 1fr}}
@media (max-width:640px){
  .wall{min-height:0}
  .wall__img{object-position:center}
  .rules{grid-template-columns:1fr}
  .rules li{padding:14px 0 16px}
}

/* agent */
.agent{padding:clamp(88px,12vw,140px) 0 0}
.agent__in{display:grid;grid-template-columns:1.15fr 1fr;gap:56px;align-items:center}
.agent .big{font-size:clamp(26px,3.2vw,38px)}
.spec{margin-top:40px;border-top:1px solid var(--n-950)}
.spec div{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--n-200);font-size:16px}
.spec span{color:var(--n-500)}
.spec--grid{display:grid;grid-template-columns:1fr 1fr;column-gap:48px;margin-top:56px}
.term{background:#0F0F10;color:#E7E7E3;border-radius:12px;font-family:var(--mono);font-size:13px;box-shadow:0 30px 60px -30px rgba(0,0,0,.5);overflow:hidden}
.term__bar{display:flex;align-items:center;gap:6px;padding:10px 14px;border-bottom:1px solid #222}
.term__bar span{width:9px;height:9px;border-radius:50%;background:#333}
.term__bar em{font-style:normal;margin-left:8px;font-size:11px;color:#777;letter-spacing:.06em}
.term__body{padding:16px 18px 20px;line-height:1.9}
.term .p{color:#fff} .term .p::before{content:"› ";color:#8C9BE0}
.term .o{color:#8A8A85;padding-left:14px}
.term .hl{color:#5BE3A6}

/* demo */
.demo{margin-top:clamp(88px,12vw,140px);padding:clamp(72px,10vw,120px) 0;background:var(--n-50);border-top:1px solid var(--n-200)}
.demo__in{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.demo__list{list-style:none;padding:0;margin:28px 0 0;display:flex;flex-direction:column;gap:10px;font-size:16px;color:var(--n-700)}
.demo__list li::before{content:"→";margin-right:10px;color:var(--n-400)}
.form{background:#fff;border:1px solid var(--n-200);border-radius:14px;padding:28px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;font-weight:500;color:var(--n-700);margin-bottom:6px}
.field input,.field textarea{width:100%;font:inherit;font-size:15px;color:var(--n-950);padding:11px 13px;border:1px solid var(--n-200);border-radius:var(--r-ctl);background:#fff;resize:vertical;transition:border-color .15s,box-shadow .15s}
.field input::placeholder,.field textarea::placeholder{color:var(--n-400)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-ring)}
.field.is-error input,.field.is-error textarea{border-color:var(--neg);box-shadow:0 0 0 3px rgba(217,59,43,.14)}
.form .btn{margin-top:6px;height:46px;border-radius:var(--r-ctl)}
.form__note{margin-top:12px;text-align:center;font-size:13px;color:var(--n-500)}
.form.is-sent{text-align:center;padding:48px 28px}
.form.is-sent h3{font-size:22px;font-weight:500;letter-spacing:-.02em;margin:14px 0 8px}
.form.is-sent p{color:var(--n-600)}

/* footer */
.footer{border-top:1px solid var(--n-200);padding:56px 0 28px}
.footer__in{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;padding-bottom:40px}
.footer__in p{margin-top:12px;color:var(--n-600);font-size:15px}
.footer__cols{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.footer__cols .lbl{display:block;margin-bottom:12px}
.footer__cols a{display:block;padding:5px 0;color:var(--n-700);font-size:15px}
.footer__cols a:hover{color:var(--n-950)}
.footer__base{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:22px;border-top:1px solid var(--n-100);font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;color:var(--n-500)}

/* reveal */
.reveal{transition:opacity .7s ease,transform .7s ease}
.js .reveal{opacity:0;transform:translateY(18px)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1!important;transform:none!important;transition:none}.track .ind{transition:none}}


/* responsive */
@media (max-width:960px){
  .nav__links{display:none}
  .three,.mods{grid-template-columns:1fr 1fr}
  .agent__in,.demo__in{grid-template-columns:1fr;gap:40px}
  .footer__in{grid-template-columns:1fr}
}
@media (max-width:640px){
  :root{--gutter:16px}
  .nav__in{padding:0 16px;gap:12px}
  .nav__login,.nav__cta .btn{display:none}
  .nav__toggle{display:flex}
  .hero{min-height:600px}
  .hero__cta .btn{flex:1 1 100%}
  .ticker{gap:10px 22px;font-size:10.5px;padding:16px}
  .ticker b{font-size:13.5px;margin-left:6px}
  .three,.mods{grid-template-columns:1fr;gap:0}
  .three div{padding:18px 0;border-bottom:1px solid var(--n-100)}
  .mod{padding-right:0}
  .spec--grid{grid-template-columns:1fr}
  .spec div{font-size:15px}
  .form{padding:20px}
}