:root{
  --bg: #F7F8FB;
  --surface: #FFFFFF;
  --surface-alt: #EEF1FA;
  --ink: #12142B;
  --ink-soft: #565B7A;
  --ink-faint: #8489A6;
  --accent: #3654E0;
  --accent-ink: #FFFFFF;
  --accent-2: #0FA98C;
  --border: rgba(18,20,43,0.10);
  --border-strong: rgba(18,20,43,0.16);
  --shadow: 0 20px 50px -25px rgba(18,20,43,0.25);
  --radius: 14px;
}
html[data-theme="dark"]{
  --bg: #0A0C1C;
  --surface: #12142A;
  --surface-alt: #171A35;
  --ink: #F2F3FA;
  --ink-soft: #ADB2D1;
  --ink-faint: #6E7396;
  --accent: #6F86FF;
  --accent-ink: #0A0C1C;
  --accent-2: #33D9B8;
  --border: rgba(242,243,250,0.12);
  --border-strong: rgba(242,243,250,0.2);
  --shadow: 0 20px 50px -20px rgba(0,0,0,0.55);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Inter', system-ui, sans-serif;
  -webkit-font-smoothing:antialiased;
  transition:background .35s ease, color .35s ease;
}
h1,h2,h3,.display{
  font-family:'Space Grotesk', system-ui, sans-serif;
  letter-spacing:-0.01em;
  margin:0;
}
.mono{font-family:'IBM Plex Mono', monospace;}
a{color:inherit;}
img{max-width:100%;display:block;}
:focus-visible{outline:2px solid var(--accent); outline-offset:3px;}
.wrap{max-width:1180px; margin:0 auto; padding:0 28px;}

/* NAV */
header{
  position:sticky; top:0; z-index:50;
  background:color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
nav{display:flex; align-items:center; justify-content:space-between; padding:18px 0;}
.logo{display:flex; align-items:center; gap:10px; font-weight:600; font-size:1.05rem; text-decoration:none;}
.logo-img{height:34px; width:auto; display:block;}
.logo-mark{
  width:32px; height:32px; border-radius:9px;
  background:linear-gradient(135deg, var(--accent), var(--accent-2));
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:15px;
  flex-shrink:0;
}
.nav-links{display:flex; gap:30px; list-style:none; margin:0; padding:0; font-size:0.94rem; color:var(--ink-soft);}
.nav-links a{text-decoration:none; transition:color .2s;}
.nav-links a:hover, .nav-links a.active{color:var(--ink);}
.nav-links a.active{color:var(--accent); font-weight:600;}
.nav-right{display:flex; align-items:center; gap:14px;}
.theme-toggle{
  width:38px; height:38px; border-radius:50%;
  border:1px solid var(--border-strong); background:var(--surface);
  display:flex; align-items:center; justify-content:center; cursor:pointer;
  color:var(--ink); position:relative;
}
.theme-toggle svg{width:17px; height:17px;}
.icon-sun{display:none;}
html[data-theme="dark"] .icon-moon{display:none;}
html[data-theme="dark"] .icon-sun{display:block;}
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:11px 20px; border-radius:999px; font-size:0.92rem; font-weight:500;
  text-decoration:none; cursor:pointer; border:1px solid transparent;
  transition:transform .18s ease, box-shadow .18s ease, background .2s ease;
}
.btn-primary{background:var(--accent); color:var(--accent-ink);}
.btn-primary:hover{transform:translateY(-2px); box-shadow:0 12px 24px -10px color-mix(in srgb, var(--accent) 60%, transparent);}
.btn-ghost{border-color:var(--border-strong); color:var(--ink); background:transparent;}
.btn-ghost:hover{background:var(--surface-alt);}
.nav-cta{display:none;}
@media(min-width:860px){ .nav-cta{display:inline-flex;} }
@media(max-width:859px){ .nav-links{display:none;} }

.menu-toggle{
  width:38px; height:38px; border-radius:10px;
  border:1px solid var(--border-strong); background:var(--surface);
  display:flex; align-items:center; justify-content:center; cursor:pointer; color:var(--ink);
}
.menu-toggle svg{width:19px; height:19px;}
@media(min-width:860px){ .menu-toggle{display:none;} }

.mobile-menu{
  display:none; flex-direction:column; gap:4px;
  padding:6px 0 18px;
  border-top:1px solid var(--border);
}
.mobile-menu.open{display:flex;}
.mobile-menu a{
  text-decoration:none; color:var(--ink-soft); font-size:0.96rem; padding:12px 4px;
  border-bottom:1px solid var(--border);
}
.mobile-menu a.active{color:var(--accent); font-weight:600;}
.mobile-menu a.btn{border-bottom:none; margin-top:10px; text-align:center; justify-content:center;}
@media(min-width:860px){ .mobile-menu{display:none !important;} }

/* HERO (home page) */
.hero{
  position:relative; overflow:hidden;
  padding:110px 0 96px;
  text-align:center;
}
.hero-bg{
  position:absolute; inset:0; z-index:0;
  background:
    radial-gradient(circle at 18% 20%, color-mix(in srgb, var(--accent) 20%, transparent), transparent 45%),
    radial-gradient(circle at 82% 12%, color-mix(in srgb, var(--accent-2) 18%, transparent), transparent 40%),
    radial-gradient(circle at 50% 100%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 55%),
    var(--bg);
}
.hero-bg::before{
  content:""; position:absolute; inset:0;
  background-image: radial-gradient(color-mix(in srgb, var(--ink) 12%, transparent) 1px, transparent 1.5px);
  background-size:26px 26px;
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 72%);
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 72%);
  opacity:0.5;
}
.hero-art{
  position:absolute; inset:0; width:100%; height:100%;
  -webkit-mask-image: radial-gradient(ellipse 55% 60% at 50% 45%, transparent 35%, black 78%);
  mask-image: radial-gradient(ellipse 55% 60% at 50% 45%, transparent 35%, black 78%);
  opacity:0.9;
}
.hero-art .trace{fill:none; stroke:var(--border-strong); stroke-width:2; stroke-dasharray:6 6;}
.hero-art .frame{fill:none; stroke:var(--ink-faint); stroke-width:2;}
.hero-art .glyph{fill:none; stroke:var(--ink-faint); stroke-width:2; stroke-linecap:round;}
.hero-art .accent-line{fill:none; stroke:var(--accent); stroke-width:2;}
.hero-art .node{fill:var(--accent-2);}
.hero-art .dot{fill:var(--ink-faint);}
.hero-inner{position:relative; z-index:1; max-width:760px; margin:0 auto;}
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:0.78rem; text-transform:uppercase; letter-spacing:0.09em;
  color:var(--accent); font-weight:600; margin-bottom:18px;
}
.eyebrow::before{content:""; width:7px; height:7px; border-radius:50%; background:var(--accent-2);}
.hero .eyebrow{justify-content:center;}
.hero h1{font-size:clamp(2.1rem, 5vw, 3.6rem); line-height:1.08; font-weight:700;}
.hero h1 .accent-word{color:var(--accent);}
.hero p.lead{
  margin:22px auto 0; font-size:1.12rem; line-height:1.6; color:var(--ink-soft); max-width:560px;
}
.hero-actions{display:flex; gap:14px; margin-top:34px; flex-wrap:wrap; justify-content:center;}

/* PAGE HEADER (interior pages) */
.page-header{
  padding:72px 0 52px; text-align:center; position:relative; overflow:hidden;
}
.page-header::before{
  content:""; position:absolute; inset:0; z-index:0;
  background:
    radial-gradient(circle at 15% 10%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 45%),
    radial-gradient(circle at 85% 0%, color-mix(in srgb, var(--accent-2) 12%, transparent), transparent 40%);
}
.page-header .wrap{position:relative; z-index:1;}
.page-header .eyebrow{justify-content:center;}
.page-header h1{font-size:clamp(1.9rem, 4vw, 2.8rem); font-weight:700;}
.page-header p.lead{margin:18px auto 0; max-width:560px; color:var(--ink-soft); font-size:1.05rem; line-height:1.6;}

/* SIGNAL DIVIDER */
.signal{padding:34px 0; overflow:hidden;}
.signal-caption{text-align:center; font-size:0.78rem; letter-spacing:0.08em; text-transform:uppercase; color:var(--ink-faint); margin-bottom:14px;}
.signal svg{width:100%; height:52px; display:block;}
.signal-path{fill:none; stroke:var(--border-strong); stroke-width:1.5;}
.signal-dot{fill:var(--accent);}

/* SECTIONS */
section{padding:78px 0;}
.section-head{max-width:620px; margin-bottom:48px;}
.section-head.center{max-width:640px; margin-left:auto; margin-right:auto; text-align:center;}
.section-tag{font-size:0.78rem; text-transform:uppercase; letter-spacing:0.09em; color:var(--accent-2); font-weight:600;}
.section-head h2{font-size:clamp(1.7rem, 3vw, 2.3rem); margin-top:12px; font-weight:600;}
.section-head p{color:var(--ink-soft); margin-top:14px; line-height:1.6; font-size:1.02rem;}

/* Service clusters */
.cluster{margin-bottom:56px;}
.cluster-head{display:flex; align-items:baseline; gap:12px; margin-bottom:22px;}
.cluster-head h3{font-size:1.15rem; font-weight:600;}
.cluster-head span{font-size:0.8rem; color:var(--ink-faint);}
.cards{display:grid; grid-template-columns:1fr; gap:18px;}
@media(min-width:720px){ .cards{grid-template-columns:repeat(3,1fr);} }
.cards.two-col{grid-template-columns:1fr;}
@media(min-width:720px){ .cards.two-col{grid-template-columns:repeat(2,1fr);} }
.card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:26px 24px; transition:transform .2s ease, border-color .2s ease;
}
.card:hover{transform:translateY(-4px); border-color:var(--border-strong);}
.card-icon{
  width:42px; height:42px; border-radius:10px; background:var(--surface-alt);
  display:flex; align-items:center; justify-content:center; margin-bottom:16px; color:var(--accent);
}
.card-icon svg{width:20px; height:20px;}
.card h4{font-size:1.02rem; font-weight:600; margin-bottom:8px;}
.card p{margin:0; font-size:0.9rem; color:var(--ink-soft); line-height:1.55;}
.card .card-list{margin:14px 0 0; padding-left:18px; font-size:0.86rem; color:var(--ink-soft); line-height:1.7;}

/* Service detail rows (services page) */
.service-row{
  display:grid; grid-template-columns:1fr; gap:24px;
  padding:36px 0; border-top:1px solid var(--border);
  align-items:start;
}
.service-row:last-child{border-bottom:1px solid var(--border);}
@media(min-width:800px){ .service-row{grid-template-columns:0.9fr 1.6fr;} }
.service-row .service-label{display:flex; align-items:center; gap:14px;}
.service-row .service-label h3{font-size:1.15rem; font-weight:600;}
.service-row .service-body p{margin:0 0 14px; color:var(--ink-soft); line-height:1.65; font-size:0.98rem;}
.service-row .service-body ul{margin:0; padding-left:20px; color:var(--ink-soft); line-height:1.8; font-size:0.94rem;}

/* Process */
.process-list{display:grid; grid-template-columns:1fr; gap:0; border-top:1px solid var(--border);}
@media(min-width:760px){ .process-list{grid-template-columns:repeat(4,1fr); gap:0;} }
.process-item{padding:26px 6px; border-bottom:1px solid var(--border);}
@media(min-width:760px){ .process-item{border-bottom:none; border-right:1px solid var(--border); padding-right:22px;} .process-item:last-child{border-right:none;} }
.process-num{font-family:'IBM Plex Mono',monospace; font-size:0.82rem; color:var(--accent); margin-bottom:10px;}
.process-item h4{font-size:1rem; font-weight:600; margin-bottom:8px;}
.process-item p{margin:0; font-size:0.88rem; color:var(--ink-soft); line-height:1.55;}

/* Badges / why us */
.badges{display:grid; grid-template-columns:1fr; gap:14px;}
@media(min-width:720px){ .badges{grid-template-columns:repeat(3,1fr);} }
.badge{
  border:1px solid var(--border); border-radius:var(--radius); padding:22px;
  background:var(--surface-alt);
}
.badge h4{font-size:0.98rem; font-weight:600; margin-bottom:6px;}
.badge p{margin:0; font-size:0.86rem; color:var(--ink-soft); line-height:1.5;}

/* Values grid (about page) */
.values-grid{display:grid; grid-template-columns:1fr; gap:18px;}
@media(min-width:720px){ .values-grid{grid-template-columns:repeat(2,1fr);} }
.value-item{padding:24px; border:1px solid var(--border); border-radius:var(--radius); background:var(--surface);}
.value-item h4{font-size:1rem; font-weight:600; margin-bottom:8px;}
.value-item p{margin:0; font-size:0.92rem; color:var(--ink-soft); line-height:1.6;}

/* Work filter tags */
.filter-tags{display:flex; gap:10px; flex-wrap:wrap; margin-bottom:36px;}
.filter-tag{
  font-size:0.82rem; padding:8px 16px; border-radius:999px; border:1px solid var(--border-strong);
  color:var(--ink-soft); background:var(--surface);
}
.filter-tag.active{background:var(--accent); color:var(--accent-ink); border-color:var(--accent);}
.work-card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:0; overflow:hidden;
}
.work-thumb{
  height:150px; display:flex; align-items:center; justify-content:center;
  background:var(--surface-alt); color:var(--accent);
}
.work-thumb svg{width:34px; height:34px;}
.work-card-body{padding:22px 22px 24px;}
.work-tag{font-size:0.74rem; text-transform:uppercase; letter-spacing:0.06em; color:var(--accent-2); font-weight:600;}
.work-card-body h4{font-size:1.02rem; font-weight:600; margin:8px 0;}
.work-card-body p{margin:0; font-size:0.9rem; color:var(--ink-soft); line-height:1.55;}

/* Contact page */
.contact-grid{display:grid; grid-template-columns:1fr; gap:40px;}
@media(min-width:880px){ .contact-grid{grid-template-columns:1fr 1fr;} }
.contact-info-list{list-style:none; margin:24px 0 0; padding:0; display:flex; flex-direction:column; gap:18px;}
.contact-info-list li{display:flex; gap:14px; align-items:flex-start;}
.contact-info-list .ci-icon{
  width:38px; height:38px; border-radius:10px; background:var(--surface-alt);
  display:flex; align-items:center; justify-content:center; color:var(--accent); flex-shrink:0;
}
.contact-info-list .ci-icon svg{width:18px; height:18px;}
.contact-info-list strong{display:block; font-size:0.92rem;}
.contact-info-list span{font-size:0.88rem; color:var(--ink-soft);}
.form-card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:30px; box-shadow:var(--shadow);
}
.form-row{margin-bottom:18px; display:flex; flex-direction:column; gap:8px;}
.form-row label{font-size:0.86rem; font-weight:500; color:var(--ink-soft);}
.form-row input, .form-row select, .form-row textarea{
  font-family:inherit; font-size:0.94rem; padding:11px 13px; border-radius:10px;
  border:1px solid var(--border-strong); background:var(--bg); color:var(--ink);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus{outline:2px solid var(--accent); outline-offset:1px;}
.form-two{display:grid; grid-template-columns:1fr; gap:16px;}
@media(min-width:520px){ .form-two{grid-template-columns:1fr 1fr;} }
.form-note{font-size:0.82rem; color:var(--ink-faint); margin-top:10px;}

/* CTA */
.cta-section{
  border-radius:24px; padding:56px 40px; text-align:center;
  background:linear-gradient(135deg, var(--surface-alt), var(--surface));
  border:1px solid var(--border);
}
.cta-section h2{font-size:clamp(1.5rem,3vw,2rem); font-weight:600; margin-bottom:14px;}
.cta-section p{color:var(--ink-soft); max-width:480px; margin:0 auto 26px; line-height:1.6;}
.cta-actions{display:flex; gap:14px; justify-content:center; flex-wrap:wrap;}

/* FOOTER */
footer{border-top:1px solid var(--border); padding:44px 0 34px;}
.footer-grid{display:flex; flex-direction:column; gap:28px;}
@media(min-width:760px){ .footer-grid{flex-direction:row; justify-content:space-between; align-items:flex-start;} }
.footer-col h5{font-size:0.82rem; text-transform:uppercase; letter-spacing:0.07em; color:var(--ink-faint); margin-bottom:14px; font-weight:600;}
.footer-links{list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:10px; font-size:0.9rem; color:var(--ink-soft);}
.footer-links a{text-decoration:none;}
.footer-links a:hover{color:var(--ink);}
.footer-bottom{
  margin-top:40px; padding-top:22px; border-top:1px solid var(--border);
  display:flex; flex-direction:column; gap:10px; font-size:0.82rem; color:var(--ink-faint);
}
@media(min-width:760px){ .footer-bottom{flex-direction:row; justify-content:space-between;} }

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;}
}