/* Arva Data — site styles */
:root {
  --bg: #05070d;
  --bg-2: #080c17;
  --surface: #0b1120;
  --line: rgba(148, 163, 184, 0.13);
  --line-2: rgba(148, 163, 184, 0.24);
  --text: #e8ecf4;
  --muted: #93a0b8;
  --dim: #64708a;
  --accent: #5b8cff;
  --accent-2: #22d3ee;
  --grad: linear-gradient(135deg, #5b8cff 0%, #22d3ee 100%);
  --radius: 18px;
  --maxw: 1160px;
  --font-head: 'Manrope', system-ui, -apple-system, sans-serif;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-head); margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }
section[id] { scroll-margin-top: 72px; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.ico { width: 22px; height: 22px; flex: none; }
.ico-sm { width: 17px; height: 17px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  height: 48px; padding: 0 22px; border-radius: 12px;
  font: 600 15px var(--font); white-space: nowrap;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
}
.btn-primary { background: var(--grad); color: #04121f; box-shadow: 0 10px 30px -12px rgba(34, 211, 238, .65); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 34px -12px rgba(34, 211, 238, .85); }
.btn-ghost { border: 1px solid var(--line-2); background: rgba(255, 255, 255, .03); color: var(--text); }
.btn-ghost:hover { background: rgba(255, 255, 255, .07); border-color: rgba(148, 163, 184, .4); }
.btn-sm { height: 40px; padding: 0 16px; font-size: 14px; border-radius: 10px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(5, 7, 13, .72);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s;
}
.site-header.scrolled { border-bottom-color: var(--line); }
.nav { display: flex; align-items: center; gap: 32px; height: 70px; }
.brand { display: flex; align-items: center; gap: 11px; font: 700 18px var(--font-head); letter-spacing: -.01em; }
.brand-mark { position: relative; width: 32px; height: 32px; border-radius: 9px; overflow: hidden; flex: none; }
.brand-mark > img, .brand-mark .logo-svg { width: 100%; height: 100%; object-fit: cover; }
.nav-links { display: flex; gap: 28px; margin-left: auto; font-size: 14.5px; color: var(--muted); }
.nav-link { transition: color .2s; }
a.nav-link:hover { color: var(--text); }

/* ---------- hero ---------- */
.hero { position: relative; padding: 110px 0 150px; text-align: center; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px; background-position: center top;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 25%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 25%, transparent 75%);
  opacity: .6;
}
.glow { position: absolute; border-radius: 50%; filter: blur(90px); }
.glow-1 { width: 560px; height: 560px; background: rgba(91, 140, 255, .22); top: -220px; left: 50%; transform: translateX(-75%); }
.glow-2 { width: 460px; height: 460px; background: rgba(34, 211, 238, .14); top: -120px; left: 50%; transform: translateX(5%); }
.hero-inner { position: relative; z-index: 1; }
.badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 15px 6px 12px; border-radius: 999px;
  border: 1px solid var(--line-2); background: rgba(255, 255, 255, .03);
  font-size: 13.5px; color: #c3cde0;
}
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: #34d399; animation: live 2s infinite; flex: none; }
@keyframes live { 0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, .55); } 70% { box-shadow: 0 0 0 9px rgba(52, 211, 153, 0); } 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); } }
.hero-title {
  font-size: clamp(52px, 9vw, 104px); font-weight: 800; line-height: 1.02; letter-spacing: -.035em;
  margin: 26px 0 22px;
  background: linear-gradient(180deg, #fff 35%, #9fb2d6 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: clamp(19px, 2.3vw, 23px); font-weight: 500; line-height: 1.45; color: #d2dbec; max-width: 720px; margin: 0 auto 18px; }
.hero-text { color: var(--muted); max-width: 680px; margin: 0 auto; font-size: 16.5px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 38px; }
.hero-chips { margin-top: 48px; }
.chips-label { font-size: 12.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--dim); margin-bottom: 14px; }
.chips { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.chip { position: relative; padding: 6px 15px; border-radius: 999px; border: 1px solid var(--line); background: rgba(8, 12, 23, .8); color: #b4c0d6; font-size: 13.5px; }
.hero-wave { position: absolute; left: 0; bottom: 0; width: 100%; height: 160px; pointer-events: none; }
.wave-base { fill: none; stroke: url(#wave-g); stroke-width: 1.5; opacity: .45; }
.wave-run { fill: none; stroke: #22d3ee; stroke-width: 2; stroke-dasharray: 70 930; stroke-dashoffset: 1000; animation: wave 7s linear infinite; filter: drop-shadow(0 0 6px rgba(34, 211, 238, .9)); }
@keyframes wave { to { stroke-dashoffset: 0; } }

/* ---------- stats ---------- */
.stats { padding: 8px 0 30px; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 16px; }
.stat {
  position: relative; text-align: center; padding: 30px 22px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, .035), rgba(255, 255, 255, .008));
}
.stat-value {
  font: 800 clamp(32px, 4vw, 44px)/1.1 var(--font-head); letter-spacing: -.02em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-label { color: var(--muted); font-size: 14.5px; margin-top: 8px; line-height: 1.45; }

/* ---------- sections ---------- */
.section { padding: 110px 0; position: relative; }
.section-head { text-align: center; max-width: 700px; margin: 0 auto 56px; }
.section-head.left { text-align: left; margin: 0 0 30px; }
.eyebrow { font: 600 12.5px var(--font); letter-spacing: .16em; text-transform: uppercase; color: var(--accent-2); margin-bottom: 14px; }
.section h2 { font-size: clamp(30px, 4vw, 44px); font-weight: 700; line-height: 1.15; }
.section-lead { color: var(--muted); margin-top: 16px; font-size: 17px; }

.card {
  position: relative;
  background: linear-gradient(180deg, rgba(255, 255, 255, .035), rgba(255, 255, 255, .008));
  border: 1px solid var(--line); border-radius: var(--radius);
  transition: border-color .25s, transform .25s, box-shadow .25s;
}
.card:hover { border-color: rgba(91, 140, 255, .38); transform: translateY(-3px); box-shadow: 0 24px 50px -30px rgba(91, 140, 255, .55); }

/* technology */
.cards-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.feature { padding: 32px 28px 34px; }
.feat-ico {
  width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center;
  background: rgba(91, 140, 255, .1); border: 1px solid rgba(91, 140, 255, .26); color: #82a8ff;
  margin-bottom: 24px;
}
.feature h3 { font-size: 19.5px; font-weight: 700; margin-bottom: 10px; line-height: 1.3; }
.feature p { color: var(--muted); font-size: 15.5px; }

/* about */
.about { background: linear-gradient(180deg, transparent, rgba(91, 140, 255, .04) 50%, transparent); }
.about-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: center; }
.points { display: grid; gap: 14px; }
.point { position: relative; display: flex; gap: 13px; align-items: flex-start; color: #cdd6e6; }
.point-ico { flex: none; width: 24px; height: 24px; border-radius: 7px; display: grid; place-items: center; background: rgba(34, 211, 238, .12); color: var(--accent-2); margin-top: 1px; }
.point-ico .ico { width: 15px; height: 15px; stroke-width: 2.4; }
.about-media {
  position: relative; aspect-ratio: 4 / 3; border-radius: 24px; overflow: hidden;
  border: 1px solid var(--line-2); background: var(--surface);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .8);
}
.about-media > img, .about-media .ed-img > img { width: 100%; height: 100%; object-fit: cover; }
.media-fallback { position: absolute; inset: 0; overflow: hidden; background: radial-gradient(circle at 30% 20%, rgba(91, 140, 255, .28), transparent 55%), radial-gradient(circle at 80% 90%, rgba(34, 211, 238, .2), transparent 50%), #0a1020; }
.mf-grid { position: absolute; inset: 0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 34px 34px; opacity: .7; }
.mf-orb { position: absolute; width: 60%; aspect-ratio: 1; border-radius: 50%; left: 20%; top: 12%; border: 1px solid rgba(34, 211, 238, .25); box-shadow: inset 0 0 60px rgba(91, 140, 255, .25); }
.mf-inner { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; font: 700 22px var(--font-head); color: #dbe5f7; }
.mf-inner .logo-svg { width: 64px; height: 64px; }
.media-caption {
  position: absolute; left: 16px; bottom: 16px; z-index: 2;
  padding: 8px 14px; border-radius: 10px; font-size: 13.5px; font-weight: 500;
  background: rgba(5, 7, 13, .7); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border: 1px solid var(--line-2);
}

/* process */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step { position: relative; padding: 28px 24px 30px; border-radius: var(--radius); border: 1px solid var(--line); background: rgba(255, 255, 255, .015); }
.step::before { content: ""; position: absolute; left: 24px; right: 24px; top: -1px; height: 2px; border-radius: 2px; background: var(--grad); opacity: .7; }
.step-num { font: 800 34px/1 var(--font-head); color: transparent; -webkit-text-stroke: 1px rgba(130, 168, 255, .7); margin-bottom: 18px; letter-spacing: .02em; }
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 15px; }

/* team */
.team-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; }
.member { flex: 0 1 224px; padding: 14px 14px 24px; text-align: center; }
.avatar {
  position: relative; aspect-ratio: 1 / 1.05; border-radius: 13px; overflow: hidden; margin-bottom: 20px;
  background: linear-gradient(140deg, #18264a, #0c1428 70%);
}
.avatar > img, .avatar .ed-img > img { width: 100%; height: 100%; object-fit: cover; }
.avatar-fallback { position: absolute; inset: 0; display: grid; place-items: center; font: 700 46px var(--font-head); color: #9db4e6; letter-spacing: .02em; }
.member h3 { font-size: 18.5px; font-weight: 700; }
.member-role { color: var(--muted); font-size: 14.5px; margin-top: 3px; }
.member-mail { display: inline-flex; align-items: center; gap: 7px; margin-top: 14px; color: #7cc4ff; font-size: 14px; max-width: 100%; }
.member-mail .ico { width: 16px; height: 16px; }
.member-mail span { overflow-wrap: anywhere; }
a.member-mail:hover { color: #a8dcff; }

/* contact */
.contact-box {
  position: relative; display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center;
  padding: 64px 56px; border-radius: 28px; overflow: hidden;
  border: 1px solid var(--line-2); background: #070b16;
}
.contact-bg { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(circle at 0% 0%, rgba(91, 140, 255, .2), transparent 50%), radial-gradient(circle at 100% 100%, rgba(34, 211, 238, .14), transparent 45%); }
.contact-copy, .contact-list { position: relative; }
.contact-actions { margin-top: 30px; }
.contact-list { display: grid; gap: 12px; }
.contact-item { position: relative; }
.ci-link {
  display: flex; align-items: center; gap: 14px; padding: 15px 18px;
  border: 1px solid var(--line); border-radius: 14px; background: rgba(5, 7, 13, .55);
  transition: border-color .2s, background .2s;
}
a.ci-link:hover { border-color: rgba(34, 211, 238, .45); background: rgba(34, 211, 238, .05); }
.ci-ico { flex: none; width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; background: rgba(34, 211, 238, .1); border: 1px solid rgba(34, 211, 238, .22); color: var(--accent-2); }
.ci-ico .ico { width: 19px; height: 19px; }
.ci-text { min-width: 0; flex: 1; }
.ci-label { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--dim); }
.ci-value { font-weight: 600; overflow-wrap: anywhere; }
.ci-go { width: 18px; height: 18px; color: var(--dim); transition: transform .2s, color .2s; }
a.ci-link:hover .ci-go { transform: translateX(3px); color: var(--accent-2); }

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 34px 0; color: var(--dim); font-size: 14px; }
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: var(--text); font: 700 15px var(--font-head); }
.footer-brand .logo-svg { width: 24px; height: 24px; }
.footer-tagline { font: 400 14px var(--font); color: var(--dim); padding-left: 12px; margin-left: 2px; border-left: 1px solid var(--line-2); }

/* ---------- reveal on scroll ---------- */
.js-reveal .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; transition-delay: var(--d, 0ms); }
.js-reveal .reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .member, .team-grid > .ed-add { flex-basis: calc(50% - 10px); max-width: 290px; }
}
@media (max-width: 960px) {
  .about-grid { grid-template-columns: 1fr; gap: 44px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .contact-box { grid-template-columns: 1fr; padding: 44px 32px; gap: 32px; }
}
@media (max-width: 760px) {
  .nav { gap: 16px; height: 62px; }
  .nav-links { display: none; }
  .nav-cta { margin-left: auto; }
  .hero { padding: 76px 0 130px; }
  .section { padding: 80px 0; }
  .section-head { margin-bottom: 40px; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .btn { height: 46px; padding: 0 18px; }
  .hero-actions .btn { flex: 1 1 100%; justify-content: center; }
  .contact-box { padding: 32px 20px; border-radius: 22px; }
  .member { flex-basis: 100%; max-width: 320px; }
  .footer-tagline { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .wave-run, .live-dot { animation: none; }
  .js-reveal .reveal { opacity: 1; transform: none; transition: none; }
}