:root{
  --bg:#F6F4EF; --surface:#FFFFFF; --ink:#12182B; --muted:#596074; --line:#E3E0D8;
  --accent:#E4572E; --accent-ink:#FFFFFF; --night:#0D1220; --night-ink:#ECEAE4; --night-muted:#9AA1B2; --night-line:#232B40;
  --display:"Inter Tight",system-ui,sans-serif; --body:Inter,system-ui,sans-serif; --mono:"JetBrains Mono",ui-monospace,monospace;
  --max:1160px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){ --bg:#0B0F1A; --surface:#121829; --ink:#ECEAE4; --muted:#9AA1B2; --line:#222A3E; --accent:#FF6B3D; --accent-ink:#0B0F1A; }
}
:root[data-theme="dark"]{ --bg:#0B0F1A; --surface:#121829; --ink:#ECEAE4; --muted:#9AA1B2; --line:#222A3E; --accent:#FF6B3D; --accent-ink:#0B0F1A; }

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 var(--body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
img,svg{display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
@media(min-width:720px){.wrap{padding:0 32px}}

/* mark */
.mark .i{stroke:currentColor}.mark .af{fill:var(--accent)}

/* nav */
.nav{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
.nav.scrolled{border-bottom-color:var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font:600 22px/1 var(--display);letter-spacing:-.035em}
.brand svg{width:30px;height:30px}
.links{display:none;gap:28px;align-items:center;font-size:15px}
.links a{text-decoration:none;color:var(--muted)}
.links a:hover{color:var(--ink)}
@media(min-width:880px){.links{display:flex}}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;border-radius:999px;font:500 15px/1 var(--body);text-decoration:none;border:1px solid transparent;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:var(--ink);color:var(--bg)}
.btn.accent{background:var(--accent);color:var(--accent-ink)}
.btn.ghost{border-color:var(--line);color:var(--ink)}
.nav .btn{padding:10px 16px;font-size:14px}

/* type */
.eyebrow{font:500 12px/1.2 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
h1,h2,h3{font-family:var(--display);letter-spacing:-.025em;margin:0}
h2{font-weight:600;font-size:clamp(30px,4vw,44px);line-height:1.08;max-width:760px}
h3{font-weight:600;font-size:21px;line-height:1.25;letter-spacing:-.01em}
.lead{font-size:clamp(18px,2vw,20px);color:var(--muted);max-width:640px}
section{padding:88px 0}
@media(min-width:720px){section{padding:120px 0}}
.sec-head{display:grid;gap:16px;margin-bottom:48px}

/* hero */
.hero{padding:64px 0 72px}
@media(min-width:720px){.hero{padding:96px 0 104px}}
.hero .wrap{display:grid;gap:48px;align-items:center}
@media(min-width:960px){.hero .wrap{grid-template-columns:1.25fr .75fr}}
.hero h1{font-weight:600;font-size:clamp(42px,7vw,80px);line-height:.98;letter-spacing:-.04em;margin:20px 0 24px}
.hero h1 em{font-style:normal;color:var(--accent)}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.viz{max-width:min(420px,80vw);width:100%;justify-self:center;color:var(--ink)}
.viz .ev{fill:var(--muted)}
.viz .ln{stroke:var(--line);stroke-width:1.5}
.viz .ln.on{stroke:var(--ink);stroke-width:2}
.viz .dec{fill:var(--accent)}
.viz .halo{fill:none;stroke:var(--accent);opacity:.35}
@media (prefers-reduced-motion:no-preference){
  .viz .ln.on{stroke-dasharray:240;stroke-dashoffset:240;animation:draw 1.4s cubic-bezier(.2,.7,.2,1) forwards}
  .viz .halo{transform-origin:330px 200px;animation:pulse 2.8s ease-out 1.4s infinite}
  @keyframes draw{to{stroke-dashoffset:0}}
  @keyframes pulse{0%{transform:scale(.6);opacity:.5}100%{transform:scale(2.2);opacity:0}}
}

/* services */
.cards{display:grid;gap:16px}
@media(min-width:900px){.cards.three{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:28px;display:flex;flex-direction:column;gap:14px}
.num{font:500 12px var(--mono);color:var(--accent);letter-spacing:.08em}
.card p{margin:0;color:var(--muted)}
.card ul{margin:6px 0 0;padding:0;list-style:none;display:grid;gap:10px;font-size:15px}
.card li{padding-left:20px;position:relative}
.card li::before{content:"";position:absolute;left:0;top:.62em;width:10px;height:2px;background:var(--accent)}

/* audience */
.aud{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}
@media(min-width:900px){.aud{grid-template-columns:repeat(3,1fr)}}
.aud div{background:var(--bg);padding:28px}
.aud p{margin:10px 0 0;color:var(--muted)}

/* work (dark band) */
.band{background:var(--night);color:var(--night-ink);--accent:#FF6B3D}
.band .lead,.band .card p{color:var(--night-muted)}
.band .card{background:#121829;border-color:var(--night-line)}
.work{display:grid;gap:16px}
@media(min-width:760px){.work{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1080px){.work{grid-template-columns:repeat(3,1fr)}}
.work .card{min-height:100%}
.work .meta{font:500 11px/1.4 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--night-muted)}
.work .fact{margin-top:auto;padding-top:14px;border-top:1px solid var(--night-line);font-size:14px;color:var(--night-ink)}
.work a.go{font-size:14px;color:var(--accent);text-decoration:none;font-weight:500}
.work a.go:hover{text-decoration:underline}
.work .more{background:transparent;border-style:dashed}

/* how */
.how{display:grid;gap:40px}
@media(min-width:960px){.how{grid-template-columns:1fr 1fr;gap:64px}}
.steps{display:grid;gap:28px}
.step{display:grid;grid-template-columns:44px 1fr;gap:16px}
.step .dot{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font:500 13px var(--mono);color:var(--accent);background:var(--surface)}
.step p{margin:6px 0 0;color:var(--muted)}
.lessons{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:32px;align-self:start}
@media(min-width:960px){.lessons{margin-top:120px}}
.lessons ol{margin:20px 0 0;padding:0;list-style:none;display:grid;gap:18px;counter-reset:l}
.lessons li{counter-increment:l;display:grid;grid-template-columns:32px 1fr;font:500 19px/1.35 var(--display);letter-spacing:-.01em}
.lessons li::before{content:counter(l,decimal-leading-zero);font:500 12px/1.9 var(--mono);color:var(--accent)}

/* about */
.about{display:grid;gap:40px}
@media(min-width:960px){.about{grid-template-columns:1.4fr .9fr;gap:64px}}
.about p{color:var(--muted);margin:0 0 18px}
.about p strong{color:var(--ink);font-weight:500}
.facts{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:28px;align-self:start}
.facts dl{margin:16px 0 0;display:grid;gap:14px}
.facts dt{font:500 11px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.facts dd{margin:2px 0 0}

/* contact */
.contact{padding-bottom:120px}
.contact .box{background:var(--ink);color:var(--bg);border-radius:24px;padding:48px 28px;display:grid;gap:24px}
@media(min-width:720px){.contact .box{padding:72px 64px}}
.contact h2{color:inherit}
.contact p{margin:0;opacity:.75;max-width:620px}
.contact .btn.accent{justify-self:start}
@media(min-width:960px){.contact .box{grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start}}
.intro{display:grid;gap:20px;align-content:start}
.form{display:grid;gap:16px}
.form .row{display:grid;gap:16px}
@media(min-width:600px){.form .row{grid-template-columns:1fr 1fr}}
.form label{display:grid;gap:6px;font-size:14px;font-weight:500}
.form .opt{font-weight:400;opacity:.6}
.form input,.form textarea{font:inherit;font-size:16px;color:inherit;background:color-mix(in srgb,var(--bg) 8%,transparent);border:1px solid color-mix(in srgb,var(--bg) 22%,transparent);border-radius:10px;padding:12px 14px;width:100%}
.form textarea{resize:vertical;min-height:130px}
.form input:focus,.form textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}
.form [aria-invalid="true"]{border-color:#FF8A6B;box-shadow:0 0 0 1px #FF8A6B}
.form .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form .actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px}
.form button{cursor:pointer;font-size:15px;padding:14px 22px}
.form button:disabled{opacity:.6;cursor:wait;transform:none}
.form .status{margin:0;font-size:14px;opacity:.85}
.form .status.err{color:#FF8A6B;opacity:1}
.sent{padding:24px;border:1px solid color-mix(in srgb,var(--bg) 22%,transparent);border-radius:14px}
.sent h3{color:inherit;margin-bottom:8px}

footer{border-top:1px solid var(--line);padding:32px 0;font-size:14px;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;align-items:center}
footer a{text-decoration:none}
footer a:hover{color:var(--ink)}