:root {
  --bg: #f6f8fc;
  --surface: #ffffff;
  --surface-alt: #edf2fa;
  --text: #172033;
  --muted: #65718a;
  --primary: #5b6cff;
  --primary-dark: #4655e8;
  --accent: #12b8a6;
  --border: #dfe5ef;
  --shadow: 0 18px 50px rgba(27, 42, 78, .09);
  --radius: 20px;
}
[data-theme="dark"] {
  --bg: #0d1322;
  --surface: #151e31;
  --surface-alt: #1c2940;
  --text: #eef3ff;
  --muted: #a7b3ca;
  --primary: #8994ff;
  --primary-dark: #aab1ff;
  --accent: #42d8c5;
  --border: #2a3852;
  --shadow: 0 18px 50px rgba(0, 0, 0, .24);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65; transition: background .2s, color .2s;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 10px; z-index: 100; }
.skip-link:focus { left: 8px; }
.site-header {
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg) 88%, transparent); border-bottom: 1px solid var(--border);
}
.nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 800; letter-spacing: -.04em; font-size: 1.08rem; }
.brand-mark {
  width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px;
  color: white; background: linear-gradient(135deg, var(--primary), #8b5cf6); font-weight: 900;
}
.nav-links { display: flex; align-items: center; gap: 7px; }
.nav-links a { padding: 9px 13px; color: var(--muted); font-size: .92rem; font-weight: 650; border-radius: 10px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); background: var(--surface-alt); }
.nav-actions { display: flex; align-items: center; gap: 9px; }
.icon-btn, .menu-btn {
  width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid var(--border);
  color: var(--text); background: var(--surface); border-radius: 12px; cursor: pointer; font-size: 1rem;
}
.menu-btn { display: none; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  border: 1px solid transparent; border-radius: 12px; padding: 12px 18px;
  background: var(--primary); color: white; font-weight: 750; cursor: pointer; transition: .2s;
}
.btn:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn.secondary { color: var(--text); background: var(--surface); border-color: var(--border); }
.btn.secondary:hover { background: var(--surface-alt); }
.eyebrow { color: var(--primary); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; font-size: .75rem; }
.hero { padding: 92px 0 76px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.12fr .88fr; align-items: center; gap: 58px; }
.hero h1 { font-size: clamp(2.7rem, 6vw, 5.25rem); line-height: 1.04; letter-spacing: -.065em; margin: 15px 0 22px; max-width: 720px; }
.gradient-text { background: linear-gradient(100deg, var(--primary), #9b67ef 60%, var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { color: var(--muted); font-size: 1.12rem; max-width: 620px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-art {
  min-height: 390px; position: relative; border-radius: 32px; overflow: hidden;
  background: radial-gradient(circle at 70% 20%, rgba(18,184,166,.45), transparent 32%),
              radial-gradient(circle at 25% 80%, rgba(139,92,246,.5), transparent 38%),
              linear-gradient(145deg, #182849, #11182d 70%);
  box-shadow: var(--shadow); padding: 30px; display: flex; align-items: center; justify-content: center;
}
.orbit { width: 260px; height: 260px; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; position: relative; display: grid; place-items: center; }
.orbit:before, .orbit:after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; inset: 28px; }
.orbit:after { inset: 66px; }
.core { width: 100px; height: 100px; border-radius: 30px; display: grid; place-items: center; color: white; font-size: 2.6rem; font-weight: 900; background: linear-gradient(135deg, #6574ff, #13bda9); box-shadow: 0 0 60px rgba(91,108,255,.65); z-index: 2; }
.float-card { position: absolute; color: #f7f9ff; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2); border-radius: 14px; padding: 12px 15px; backdrop-filter: blur(10px); font-size: .85rem; }
.float-card strong { display: block; font-size: 1.1rem; }
.float-one { top: 45px; left: 22px; } .float-two { right: 20px; bottom: 48px; }
.section { padding: 76px 0; }
.section.alt { background: var(--surface-alt); }
.section-heading { max-width: 680px; margin-bottom: 34px; }
.section-heading h2, .page-heading h1 { font-size: clamp(2rem, 4vw, 3.25rem); letter-spacing: -.05em; line-height: 1.12; margin: 10px 0 14px; }
.section-heading p, .page-heading p { color: var(--muted); margin: 0; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { padding: 25px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: 0 5px 20px rgba(25,40,70,.025); }
.card-icon { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; background: color-mix(in srgb, var(--primary) 13%, var(--surface)); color: var(--primary); font-size: 1.35rem; margin-bottom: 18px; }
.card h3 { margin: 0 0 8px; letter-spacing: -.02em; }
.card p { margin: 0; color: var(--muted); }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; margin-top: 34px; }
.stat { padding: 20px; border-left: 3px solid var(--accent); }
.stat strong { display: block; font-size: 1.8rem; letter-spacing: -.04em; }
.stat span { color: var(--muted); font-size: .9rem; }
.page-hero { padding: 78px 0 46px; }
.page-heading { max-width: 760px; }
.breadcrumb { color: var(--muted); font-size: .88rem; margin-bottom: 18px; }
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: center; }
.feature-panel { border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); padding: 30px; }
.check-list { list-style: none; padding: 0; margin: 20px 0 0; }
.check-list li { padding: 8px 0; color: var(--muted); }
.check-list li:before { content: "✓"; color: var(--accent); font-weight: 900; margin-right: 10px; }
.project-toolbar { display: flex; gap: 9px; flex-wrap: wrap; margin: 25px 0; }
.filter-btn { border: 1px solid var(--border); background: var(--surface); color: var(--muted); border-radius: 999px; padding: 9px 15px; cursor: pointer; font-weight: 700; }
.filter-btn.active, .filter-btn:hover { background: var(--primary); border-color: var(--primary); color: white; }
.project-card { overflow: hidden; padding: 0; }
.project-visual { min-height: 155px; padding: 25px; display: flex; align-items: center; justify-content: center; color: white; font-size: 2.8rem; background: linear-gradient(135deg, #273c76, #7656c9); }
.project-card:nth-child(2) .project-visual { background: linear-gradient(135deg, #0d746f, #42b89b); }
.project-card:nth-child(3) .project-visual { background: linear-gradient(135deg, #984b73, #e18a69); }
.project-card .card-content { padding: 23px; }
.tag { display: inline-block; color: var(--primary); background: color-mix(in srgb, var(--primary) 12%, var(--surface)); border-radius: 999px; padding: 4px 10px; font-size: .75rem; font-weight: 800; }
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 25px; }
.form-card { padding: 28px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
label { display: block; font-size: .88rem; font-weight: 750; margin: 13px 0 6px; }
input, textarea, select { width: 100%; padding: 13px 14px; border-radius: 11px; border: 1px solid var(--border); background: var(--bg); color: var(--text); font: inherit; outline: none; }
input:focus, textarea:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 15%, transparent); }
textarea { min-height: 135px; resize: vertical; }
.form-message { margin-top: 14px; padding: 12px 14px; border-radius: 10px; display: none; }
.form-message.success { display: block; color: #087c65; background: #dff8f0; }
.form-message.error { display: block; color: #a12c3b; background: #ffeaed; }
.cta { border-radius: 28px; padding: 42px; background: linear-gradient(120deg, #273a82, #604fc1 65%, #147f87); color: white; display: flex; align-items: center; justify-content: space-between; gap: 25px; }
.cta h2 { font-size: clamp(1.7rem, 3vw, 2.5rem); letter-spacing: -.04em; margin: 0 0 8px; }
.cta p { color: rgba(255,255,255,.78); margin: 0; }
.cta .btn { background: white; color: #273a82; white-space: nowrap; }
.site-footer { padding: 45px 0 25px; border-top: 1px solid var(--border); }
.footer-grid { display: flex; justify-content: space-between; gap: 25px; align-items: flex-start; }
.footer-note { color: var(--muted); max-width: 380px; font-size: .9rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; color: var(--muted); font-size: .9rem; }
.copyright { margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--border); color: var(--muted); font-size: .82rem; }
.not-found { text-align: center; padding: 100px 0; }
.not-found .number { font-size: clamp(5rem, 18vw, 10rem); font-weight: 900; letter-spacing: -.1em; line-height: 1; color: var(--primary); }
@media (max-width: 820px) {
  .hero-grid, .feature-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 65px; }
  .hero-art { min-height: 320px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; position: absolute; top: 76px; left: 0; right: 0; padding: 12px 20px 20px; background: var(--bg); border-bottom: 1px solid var(--border); flex-direction: column; align-items: stretch; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px; }
  .menu-btn { display: grid; }
}
@media (max-width: 560px) {
  .container { width: min(100% - 30px, 1120px); }
  .cards, .stats, .form-row { grid-template-columns: 1fr; }
  .hero { padding: 52px 0; }
  .section { padding: 55px 0; }
  .cta, .footer-grid { flex-direction: column; align-items: flex-start; }
  .cta { padding: 30px; }
  .hero-art { min-height: 270px; }
  .orbit { transform: scale(.82); }
}