:root {
  --ink: #eefbff;
  --ink-2: #b5cfd7;
  --muted: #7d9aa4;
  --bg: #051317;
  --bg-2: #081c22;
  --surface: #0b252d;
  --surface-2: #10343e;
  --card: rgba(10, 37, 45, .82);
  --line: rgba(205, 244, 255, .12);
  --line-strong: rgba(205, 244, 255, .24);
  --lime: #5cecff;
  --mint: #26c9df;
  --orange: #ff8267;
  --on-accent: #03171c;
  --nav: rgba(5, 19, 23, .82);
  --shadow: 0 30px 90px rgba(0, 9, 13, .38);
  --display: 'Syne', sans-serif;
  --body: 'Manrope', sans-serif;
  --mono: 'DM Mono', monospace;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --ink: #082a34;
  --ink-2: #345a65;
  --muted: #56737c;
  --bg: #f0fbfd;
  --bg-2: #e3f4f7;
  --surface: #fbfeff;
  --surface-2: #d7eef2;
  --card: rgba(251, 254, 255, .88);
  --line: rgba(8, 42, 52, .13);
  --line-strong: rgba(8, 42, 52, .24);
  --lime: #007c91;
  --mint: #006f82;
  --orange: #c94c30;
  --on-accent: #f6fdff;
  --nav: rgba(240, 251, 253, .86);
  --shadow: 0 28px 72px rgba(22, 77, 89, .13);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; background: radial-gradient(circle at 84% -8%, color-mix(in srgb, var(--mint) 9%, transparent), transparent 34rem), var(--bg); color: var(--ink); font-family: var(--body); line-height: 1.6; overflow-x: hidden; }
img, svg { max-width: 100%; }
body::before { content: ''; position: fixed; inset: 0; z-index: 30; pointer-events: none; opacity: .17; mix-blend-mode: soft-light; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.86' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.16'/%3E%3C/svg%3E"); }
a { color: inherit; }
button { font: inherit; }
::selection { background: var(--lime); color: var(--on-accent); }
:focus-visible { outline: 2px solid var(--lime); outline-offset: 4px; }
.shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; top: -60px; left: 18px; z-index: 200; padding: 10px 14px; color: var(--on-accent); background: var(--lime); border-radius: 8px; }
.skip-link:focus { top: 14px; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 100; height: 76px; background: var(--nav); border-bottom: 1px solid var(--line); backdrop-filter: blur(18px); }
.nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font: 700 1rem var(--display); }
.brand em { color: var(--mint); font-style: normal; }
.brand-mark { width: 34px; aspect-ratio: 1; display: grid; place-items: center; flex: 0 0 34px; border-radius: 50%; color: var(--ink); background: color-mix(in srgb, var(--ink) 4%, transparent); transition: color .25s ease, background .25s ease; }
.brand-mark svg { width: 100%; height: 100%; display: block; overflow: visible; }
.brand-mark circle { fill: none; stroke: currentColor; stroke-width: 1.4; }
.brand-mark text { fill: currentColor; font: 400 14px/1 Arial, Helvetica, sans-serif; letter-spacing: -1px; }
.back-link { text-decoration: none; color: var(--ink-2); font-size: .78rem; font-weight: 700; }
.back-link:hover { color: var(--ink); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.theme-toggle { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: var(--surface); color: var(--ink); cursor: pointer; }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .sun, [data-theme="light"] .theme-toggle .moon { display: none; }
[data-theme="light"] .theme-toggle .sun { display: block; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 11px; min-height: 46px; padding: 0 20px; border: 1px solid transparent; border-radius: 999px; text-decoration: none; font-size: .82rem; font-weight: 700; transition: transform .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: var(--on-accent); background: var(--lime); }
.button.secondary { border-color: var(--line-strong); }
.button.secondary:hover { border-color: var(--mint); }

.product-hero { min-height: 850px; padding: 150px 0 90px; position: relative; display: flex; align-items: center; overflow: hidden; border-bottom: 1px solid var(--line); }
.product-hero::before { content: ''; position: absolute; width: 820px; height: 820px; right: -260px; top: -280px; border-radius: 50%; background: radial-gradient(circle, color-mix(in srgb, var(--mint) 23%, transparent), transparent 68%); filter: blur(18px); }
.hero-grid { position: absolute; inset: 0; opacity: .28; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to bottom, transparent, #000 22%, #000 82%, transparent); }
.hero-layout { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 70px; }
.edastavez-hero-layout, .wide-product-hero { width: min(1460px, calc(100% - 48px)); grid-template-columns: minmax(300px, 3fr) minmax(0, 7fr); gap: 34px; }
.edastavez-hero-layout h1, .wide-product-hero h1 { font-size: clamp(3.8rem, 5vw, 5.4rem); }
.edastavez-hero-layout .hero-copy, .wide-product-hero .hero-copy { font-size: 1rem; }
.product-kicker { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 28px; padding: 8px 12px; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--card); color: var(--mint); font: .66rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 6px color-mix(in srgb, var(--lime) 15%, transparent); }
h1 { margin: 0; font: 600 clamp(4rem, 8vw, 7.6rem)/.88 var(--display); letter-spacing: -.075em; }
.hero-tagline { margin: 22px 0 0; color: var(--orange); font: .7rem var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.hero-copy { max-width: 650px; margin: 24px 0 0; color: var(--ink-2); font-size: 1.1rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-visual { min-height: 520px; position: relative; display: grid; place-items: center; }

.section { padding: 120px 0; }
.section.alt { background: var(--bg-2); border-block: 1px solid var(--line); }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; color: var(--mint); font: 500 .7rem var(--mono); letter-spacing: .11em; text-transform: uppercase; }
.eyebrow::before { content: ''; width: 24px; height: 1px; background: currentColor; }
.section-heading { margin: 0; max-width: 880px; font: 600 clamp(2.4rem, 5vw, 4.8rem)/.98 var(--display); letter-spacing: -.055em; }
.section-lead { max-width: 680px; margin: 24px 0 0; color: var(--ink-2); font-size: 1.08rem; }
.section-top { display: flex; align-items: end; justify-content: space-between; gap: 44px; margin-bottom: 56px; }
.section-top .section-lead { max-width: 440px; margin: 0; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.feature-card { min-height: 270px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--card); }
.feature-card span { color: var(--muted); font: .66rem var(--mono); }
.feature-card h3 { margin: 72px 0 12px; font: 600 1.24rem var(--display); letter-spacing: -.03em; }
.feature-card p { margin: 0; color: var(--ink-2); font-size: .9rem; }

.semantic-feature-grid { gap: 14px; border: 0; }
.semantic-feature-grid .feature-card {
  --feature-accent: var(--mint);
  min-height: 270px;
  padding: 26px;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid color-mix(in srgb, var(--feature-accent) 20%, var(--line));
  border-radius: 20px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--feature-accent) 6%, var(--card)), var(--card) 68%);
  transition: transform .3s cubic-bezier(.2,.8,.2,1), border-color .3s ease, box-shadow .3s ease;
}
.semantic-feature-grid .feature-card:nth-child(2) { --feature-accent: #7d9fff; }
.semantic-feature-grid .feature-card:nth-child(3) { --feature-accent: var(--orange); }
.semantic-feature-grid .feature-card:nth-child(4) { --feature-accent: #42b88a; }
.semantic-feature-grid .feature-card:nth-child(5) { --feature-accent: #8d7df2; }
.semantic-feature-grid .feature-card:nth-child(6) { --feature-accent: #38b8c9; }
.semantic-feature-grid .feature-card::before { width: 50px; height: 50px; display: grid; place-items: center; border: 1px solid color-mix(in srgb, var(--feature-accent) 38%, var(--line)); border-radius: 15px; color: var(--feature-accent); background: color-mix(in srgb, var(--feature-accent) 9%, transparent); font: 1rem var(--mono); }
/* TattvAI capability symbols: model, clone, compression, provenance, timeline,
   annotation, projects, filters, identity and analyst decision. */
.tattvai-page .capability-profile-grid .feature-card:nth-child(1)::before { content: '✦'; }
.tattvai-page .capability-profile-grid .feature-card:nth-child(2)::before { content: '⧉'; }
.tattvai-page .capability-profile-grid .feature-card:nth-child(3)::before { content: '≋'; }
.tattvai-page .capability-profile-grid .feature-card:nth-child(4)::before { content: '⌖'; }
.tattvai-page .capability-profile-grid .feature-card:nth-child(5)::before { content: '▷'; }
.tattvai-page .capability-profile-grid .feature-card:nth-child(6)::before { content: '✎'; }
.tattvai-page .capability-profile-grid .feature-card:nth-child(7)::before { content: '▣'; }
.tattvai-page .capability-profile-grid .feature-card:nth-child(8)::before { content: '☷'; }
.tattvai-page .capability-profile-grid .feature-card:nth-child(9)::before { content: '#'; }
.tattvai-page .capability-profile-grid .feature-card:nth-child(10)::before { content: '✓'; }
/* Chakshu capability symbols: enhancement, AI model, frames, history,
   geometry, tracking, redaction, custody, export and live capture. */
.chakshu-page .capability-profile-grid .feature-card:nth-child(1)::before { content: '◐'; }
.chakshu-page .capability-profile-grid .feature-card:nth-child(2)::before { content: '✦'; }
.chakshu-page .capability-profile-grid .feature-card:nth-child(3)::before { content: '▷'; }
.chakshu-page .capability-profile-grid .feature-card:nth-child(4)::before { content: '↶'; }
.chakshu-page .capability-profile-grid .feature-card:nth-child(5)::before { content: '◇'; }
.chakshu-page .capability-profile-grid .feature-card:nth-child(6)::before { content: '⌖'; }
.chakshu-page .capability-profile-grid .feature-card:nth-child(7)::before { content: '◩'; }
.chakshu-page .capability-profile-grid .feature-card:nth-child(8)::before { content: '♢'; }
.chakshu-page .capability-profile-grid .feature-card:nth-child(9)::before { content: '↗'; }
.chakshu-page .capability-profile-grid .feature-card:nth-child(10)::before { content: '◎'; }
.semantic-feature-grid .feature-card::after { content: ''; position: absolute; z-index: -1; width: 150px; height: 150px; right: -86px; top: -92px; border-radius: 50%; background: color-mix(in srgb, var(--feature-accent) 13%, transparent); }
.semantic-feature-grid .feature-card:hover { transform: translateY(-5px); border-color: color-mix(in srgb, var(--feature-accent) 52%, var(--line)); box-shadow: 0 24px 52px color-mix(in srgb, var(--feature-accent) 10%, transparent); }
.semantic-feature-grid .feature-card > span { position: absolute; right: 26px; top: 33px; padding: 7px 10px; border: 1px solid color-mix(in srgb, var(--feature-accent) 28%, var(--line)); border-radius: 999px; color: var(--feature-accent); background: color-mix(in srgb, var(--feature-accent) 7%, transparent); font: 500 .55rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.semantic-feature-grid .feature-card h3 { margin: 42px 0 11px; font-size: 1.27rem; line-height: 1.18; }
.semantic-feature-grid .feature-card p { font-size: .84rem; line-height: 1.6; }
.capability-stats { margin-bottom: 18px; }
.capability-profile-grid { grid-template-columns: repeat(2, 1fr); }
.capability-profile-grid .feature-card { min-height: 245px; }
.process.five-step-process { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.use-grid.investigation-use-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px; }
.investigation-use-grid .use-card { --use-accent: var(--mint); min-height: 245px; grid-column: span 2; padding: 24px; position: relative; overflow: hidden; isolation: isolate; border-color: color-mix(in srgb, var(--use-accent) 22%, var(--line)); border-radius: 19px; background: linear-gradient(145deg, color-mix(in srgb, var(--use-accent) 7%, var(--card)), var(--card) 68%); transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease; }
.investigation-use-grid .use-card:nth-child(2) { --use-accent: #7d9fff; }
.investigation-use-grid .use-card:nth-child(3) { --use-accent: var(--orange); }
.investigation-use-grid .use-card:nth-child(4) { --use-accent: #42b88a; grid-column: 2 / span 2; }
.investigation-use-grid .use-card:nth-child(5) { --use-accent: #8d7df2; }
.investigation-use-grid .use-card::before { content: '⌕'; width: 50px; height: 50px; display: grid; place-items: center; border: 1px solid color-mix(in srgb, var(--use-accent) 38%, var(--line)); border-radius: 15px; color: var(--use-accent); background: color-mix(in srgb, var(--use-accent) 9%, transparent); font: 1rem var(--mono); }
.investigation-use-grid .use-card:nth-child(2)::before { content: '◉'; }
.investigation-use-grid .use-card:nth-child(3)::before { content: '▤'; }
.investigation-use-grid .use-card:nth-child(4)::before { content: '◆'; }
.investigation-use-grid .use-card:nth-child(5)::before { content: '⚖'; }
.investigation-use-grid .use-card::after { content: ''; position: absolute; z-index: -1; width: 140px; height: 140px; right: -82px; top: -84px; border-radius: 50%; background: color-mix(in srgb, var(--use-accent) 12%, transparent); transition: transform .35s ease; }
.investigation-use-grid .use-card:hover { transform: translateY(-5px); border-color: color-mix(in srgb, var(--use-accent) 52%, var(--line)); box-shadow: 0 22px 48px color-mix(in srgb, var(--use-accent) 9%, transparent); }
.investigation-use-grid .use-card:hover::after { transform: scale(1.25); }
.investigation-use-grid .use-card h3 { margin: 42px 0 10px; font-size: 1.12rem; }
.investigation-use-grid .use-card p { font-size: .82rem; line-height: 1.55; }
.responsible-use { padding: clamp(30px, 6vw, 64px); border: 1px solid color-mix(in srgb, var(--mint) 35%, var(--line)); border-radius: 24px; background: linear-gradient(135deg, color-mix(in srgb, var(--mint) 10%, var(--card)), var(--card)); }
.responsible-use > span { color: var(--mint); font: 500 .64rem var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.responsible-use h2 { max-width: 860px; margin: 16px 0 18px; font: 600 clamp(2rem, 4.5vw, 4.2rem)/1 var(--display); letter-spacing: -.05em; }
.responsible-use p { max-width: 900px; margin: 0; color: var(--ink-2); font-size: 1rem; line-height: 1.7; }

.digisampark-capability-grid { gap: 14px; border: 0; }
.digisampark-capability-grid .feature-card {
  --feature-accent: var(--mint);
  min-height: 285px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid color-mix(in srgb, var(--feature-accent) 20%, var(--line));
  border-radius: 20px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--feature-accent) 6%, var(--card)), var(--card) 68%);
  transition: transform .3s cubic-bezier(.2,.8,.2,1), border-color .3s ease, box-shadow .3s ease;
}
.digisampark-capability-grid .feature-card:nth-child(2) { --feature-accent: #7d9fff; }
.digisampark-capability-grid .feature-card:nth-child(3) { --feature-accent: var(--orange); }
.digisampark-capability-grid .feature-card:nth-child(4) { --feature-accent: #42b88a; }
.digisampark-capability-grid .feature-card:nth-child(5) { --feature-accent: #8d7df2; }
.digisampark-capability-grid .feature-card:nth-child(6) { --feature-accent: #38b8c9; }
.digisampark-capability-grid .feature-card::before { content: ''; position: absolute; z-index: -1; width: 170px; height: 170px; right: -94px; top: -104px; border-radius: 50%; background: color-mix(in srgb, var(--feature-accent) 13%, transparent); transition: transform .4s ease; }
.digisampark-capability-grid .feature-card::after { content: ''; position: absolute; left: 26px; bottom: 0; width: 38px; height: 3px; border-radius: 999px 999px 0 0; background: var(--feature-accent); transition: width .35s ease; }
.digisampark-capability-grid .feature-card:hover { transform: translateY(-5px); border-color: color-mix(in srgb, var(--feature-accent) 52%, var(--line)); box-shadow: 0 24px 52px color-mix(in srgb, var(--feature-accent) 10%, transparent); }
.digisampark-capability-grid .feature-card:hover::before { transform: scale(1.22); }
.digisampark-capability-grid .feature-card:hover::after { width: calc(100% - 52px); }
.digisampark-feature-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.digisampark-feature-icon { width: 54px; height: 54px; display: grid; place-items: center; border: 1px solid color-mix(in srgb, var(--feature-accent) 38%, var(--line)); border-radius: 16px; color: var(--feature-accent); background: color-mix(in srgb, var(--feature-accent) 9%, transparent); }
.digisampark-feature-icon svg { width: 25px; height: 25px; stroke-width: 1.55; }
.digisampark-capability-grid .feature-card .digisampark-feature-label { padding: 7px 10px; border: 1px solid color-mix(in srgb, var(--feature-accent) 28%, var(--line)); border-radius: 999px; color: var(--feature-accent); background: color-mix(in srgb, var(--feature-accent) 7%, transparent); font: 500 .55rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.digisampark-feature-copy { margin-top: auto; padding-top: 38px; }
.digisampark-capability-grid .feature-card h3 { margin: 0 0 11px; font-size: 1.27rem; line-height: 1.18; }
.digisampark-capability-grid .feature-card p { font-size: .84rem; line-height: 1.6; }
.process {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 24px;
  background:
    linear-gradient(115deg, color-mix(in srgb, var(--mint) 8%, transparent), transparent 42%),
    var(--card);
  box-shadow: 0 24px 70px color-mix(in srgb, var(--bg) 46%, transparent);
  counter-reset: workflow-step;
}
.process::before {
  content: '';
  position: absolute;
  z-index: 2;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--mint), var(--lime) 55%, color-mix(in srgb, var(--mint) 10%, transparent));
}
.step {
  min-width: 0;
  min-height: 338px;
  padding: 28px 26px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  border-right: 1px solid var(--line);
  background: linear-gradient(160deg, color-mix(in srgb, var(--surface) 18%, transparent), transparent 62%);
  counter-increment: workflow-step;
  transition: background .3s ease, transform .3s cubic-bezier(.2,.8,.2,1);
}
.step::before {
  content: counter(workflow-step, decimal-leading-zero);
  position: absolute;
  top: 31px;
  right: 24px;
  color: color-mix(in srgb, var(--mint) 72%, var(--muted));
  font: 500 .62rem/1 var(--mono);
  letter-spacing: .14em;
}
.step::after {
  content: '';
  position: absolute;
  right: -90px;
  bottom: -118px;
  width: 220px;
  height: 220px;
  border: 1px solid color-mix(in srgb, var(--mint) 17%, transparent);
  border-radius: 50%;
  opacity: 0;
  transform: scale(.74);
  transition: opacity .35s ease, transform .45s cubic-bezier(.2,.8,.2,1);
}
.step:last-child { border-right: 0; }
.step:hover { background: linear-gradient(160deg, color-mix(in srgb, var(--mint) 12%, var(--surface)), color-mix(in srgb, var(--card) 94%, transparent)); transform: translateY(-4px); }
.step:hover::after { opacity: 1; transform: scale(1); }
.step-num {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  position: relative;
  z-index: 1;
  flex: 0 0 52px;
  border: 1px solid color-mix(in srgb, var(--mint) 40%, var(--line-strong));
  border-radius: 50%;
  color: var(--mint);
  background: color-mix(in srgb, var(--mint) 7%, var(--surface));
  box-shadow: inset 0 0 0 5px color-mix(in srgb, var(--mint) 3%, transparent);
  font: 600 1rem/1 var(--mono);
  transition: color .25s ease, background .25s ease, transform .25s ease;
}
.step-num::before { content: '→'; }
.step:last-child .step-num::before { content: '✓'; }
.step:hover .step-num { color: var(--on-accent); background: var(--mint); transform: translateX(3px); }
.step h3 {
  margin: auto 0 16px;
  padding-top: 68px;
  font: 600 clamp(1.16rem, 1.55vw, 1.48rem)/1.22 var(--display);
  letter-spacing: -.035em;
}
.step p {
  margin: 0;
  position: relative;
  z-index: 1;
  color: var(--ink);
  font-size: .84rem;
  line-height: 1.72;
}

.stats { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: 20px; overflow: hidden; background: var(--card); }
.stat { padding: 28px; border-right: 1px solid var(--line); }
.stat:last-child { border: 0; }
.stat strong { display: block; color: var(--lime); font: 600 clamp(1.8rem, 3vw, 3.2rem)/1 var(--display); letter-spacing: -.05em; }
.stat span { display: block; margin-top: 8px; color: var(--muted); font: .65rem var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.digisampark-stats { grid-template-columns: repeat(3, 1fr); margin-top: 22px; }
.digisampark-stats .stat:nth-child(3n) { border-right: 0; }
.digisampark-stats .stat:nth-child(n+4) { border-top: 1px solid var(--line); }
.illustrative-note { margin: 18px 0 0; color: var(--muted); font: .62rem var(--mono); letter-spacing: .03em; }

.digisampark-proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 22px; }
.digisampark-proof-card {
  --proof-accent: var(--mint);
  min-height: 190px;
  padding: 24px;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid color-mix(in srgb, var(--proof-accent) 22%, var(--line));
  border-radius: 18px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--proof-accent) 7%, var(--card)), var(--card) 64%);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.digisampark-proof-card:nth-child(2) { --proof-accent: #7d9fff; }
.digisampark-proof-card:nth-child(3) { --proof-accent: var(--orange); }
.digisampark-proof-card:nth-child(4) { --proof-accent: #42b88a; }
.digisampark-proof-card:nth-child(5) { --proof-accent: #8d7df2; }
.digisampark-proof-card:nth-child(6) { --proof-accent: #38b8c9; }
.digisampark-proof-card::after { content: ''; position: absolute; z-index: -1; width: 120px; height: 120px; right: -68px; top: -72px; border-radius: 50%; background: color-mix(in srgb, var(--proof-accent) 12%, transparent); transition: transform .35s ease; }
.digisampark-proof-card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--proof-accent) 50%, var(--line)); box-shadow: 0 20px 45px color-mix(in srgb, var(--proof-accent) 9%, transparent); }
.digisampark-proof-card:hover::after { transform: scale(1.25); }
.digisampark-proof-icon { width: 44px; height: 44px; display: grid; place-items: center; border: 1px solid color-mix(in srgb, var(--proof-accent) 34%, var(--line)); border-radius: 13px; color: var(--proof-accent); background: color-mix(in srgb, var(--proof-accent) 8%, transparent); }
.digisampark-proof-icon svg { width: 21px; height: 21px; stroke-width: 1.55; }
.digisampark-proof-card h3 { margin: 28px 0 7px; font: 600 1.08rem var(--display); letter-spacing: -.025em; }
.digisampark-proof-card p { margin: 0; color: var(--ink-2); font-size: .8rem; line-height: 1.55; }

.use-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.use-card { min-height: 240px; padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: var(--card); }
.use-card h3 { margin: 70px 0 10px; font: 600 1.35rem var(--display); }
.use-card p { margin: 0; color: var(--ink-2); }

.cta { padding: 0 0 100px; }
.cta-box { padding: clamp(38px, 7vw, 80px); border-radius: 28px; color: var(--on-accent); background: var(--lime); display: flex; align-items: end; justify-content: space-between; gap: 40px; }
.cta-box h2 { margin: 0; max-width: 760px; font: 600 clamp(2.6rem, 5vw, 5.2rem)/.95 var(--display); letter-spacing: -.06em; }
.cta-box p { max-width: 580px; color: #31412b; }
.cta-box .button { flex: 0 0 auto; color: var(--on-accent); border-color: color-mix(in srgb, var(--on-accent) 35%, transparent); }

.site-footer { padding: 34px 0; border-top: 1px solid var(--line); }
.footer-row { display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font-size: .74rem; }

/* TattvAI visual */
.forensic-stage { width: min(480px, 100%); aspect-ratio: 1; position: relative; display: grid; place-items: center; }
.forensic-ring { position: absolute; border: 1px solid var(--line-strong); border-radius: 50%; animation: orbit 22s linear infinite; }
.forensic-ring.r1 { inset: 2%; }
.forensic-ring.r2 { inset: 16%; animation-direction: reverse; animation-duration: 16s; }
.forensic-ring.r3 { inset: 31%; animation-duration: 11s; }
.forensic-ring::before { content: ''; position: absolute; width: 10px; height: 10px; left: 16%; top: 8%; border-radius: 50%; background: var(--orange); box-shadow: 0 0 22px var(--orange); }
.forensic-core { width: 38%; aspect-ratio: 1; display: grid; place-items: center; position: relative; border: 1px solid var(--mint); border-radius: 30%; background: var(--surface); box-shadow: 0 0 65px color-mix(in srgb, var(--mint) 25%, transparent); }
.forensic-core::before, .forensic-core::after { content: ''; position: absolute; inset: 18%; border: 1px solid var(--line-strong); border-radius: 50%; }
.forensic-core::after { inset: 35%; background: var(--lime); border: 0; box-shadow: 0 0 24px var(--lime); }
.signal-label { position: absolute; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink-2); font: .59rem var(--mono); letter-spacing: .06em; text-transform: uppercase; backdrop-filter: blur(10px); }
.signal-label.a { top: 15%; left: 1%; }.signal-label.b { top: 42%; right: 0; }.signal-label.c { bottom: 12%; left: 12%; }
@keyframes orbit { to { transform: rotate(360deg); } }

/* Chakshu visual */
.enhance-stage { width: min(500px, 100%); aspect-ratio: 1.05; position: relative; border: 1px solid var(--line-strong); border-radius: 22px; overflow: hidden; background: var(--surface); box-shadow: var(--shadow); }
.enhance-side { position: absolute; inset: 0; display: grid; place-items: center; }
.enhance-side.before { background: radial-gradient(circle at 42% 40%, #505656, #151a19 58%, #060807); filter: contrast(.7) blur(1.5px); }
.enhance-side.after { width: 53%; overflow: hidden; background: radial-gradient(circle at 42% 40%, #a8d9e2, #1d6070 53%, #06181d); border-right: 2px solid var(--lime); animation: reveal-image 4.5s ease-in-out infinite alternate; }
.enhance-subject { width: 38%; height: 52%; border: 2px solid rgba(255,255,255,.65); border-radius: 46% 46% 38% 38%; position: absolute; left: 31%; top: 22%; }
.enhance-subject::before { content: ''; position: absolute; width: 45%; height: 16%; left: 27%; bottom: 16%; border-bottom: 2px solid rgba(255,255,255,.55); border-radius: 50%; }
.enhance-line { position: absolute; z-index: 4; top: 0; bottom: 0; left: 53%; width: 2px; background: var(--lime); box-shadow: 0 0 18px var(--lime); animation: reveal-line 4.5s ease-in-out infinite alternate; }
.enhance-badge { position: absolute; z-index: 5; left: 18px; bottom: 18px; padding: 8px 10px; border: 1px solid var(--line-strong); border-radius: 8px; background: rgba(5,19,23,.84); color: #eefbff; font: .6rem var(--mono); }
@keyframes reveal-image { from { width: 28%; } to { width: 72%; } }
@keyframes reveal-line { from { left: 28%; } to { left: 72%; } }

/* eDastavez product tour */
.edastavez-hero-visual, .wide-product-visual { min-height: 620px; }
.screen-tour { width: 100%; position: relative; }
.coverflow-stage { height: 590px; position: relative; perspective: 1400px; isolation: isolate; border-radius: 30px; background: radial-gradient(circle at 50% 48%, color-mix(in srgb, var(--mint) 16%, transparent), transparent 43%); }
.coverflow-stage::before { content: ''; position: absolute; inset: 8% 4%; border: 1px solid var(--line); border-radius: 50%; transform: rotate(-8deg); }
.coverflow-orbit { position: absolute; inset: 20% 18%; border: 1px dashed color-mix(in srgb, var(--mint) 28%, transparent); border-radius: 50%; animation: orbit 24s linear infinite; }
.coverflow-orbit::before, .coverflow-orbit::after { content: ''; position: absolute; width: 8px; height: 8px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 18px var(--lime); }
.coverflow-orbit::before { left: 9%; top: 12%; }
.coverflow-orbit::after { right: 5%; bottom: 22%; background: var(--orange); box-shadow: 0 0 18px var(--orange); }
.coverflow-card { position: absolute; margin: 0; padding: 24px 4px 4px; overflow: hidden; aspect-ratio: 1.82; border: 1px solid var(--line-strong); border-radius: 13px; color: #eefbff; background: #071a20; box-shadow: 0 18px 45px rgba(0,0,0,.24); cursor: pointer; transform-origin: center; transition: left .82s cubic-bezier(.2,.8,.2,1), top .82s cubic-bezier(.2,.8,.2,1), width .82s cubic-bezier(.2,.8,.2,1), transform .82s cubic-bezier(.2,.8,.2,1), opacity .45s ease, filter .45s ease, border-color .3s ease, box-shadow .3s ease; }
.coverflow-card::before { content: '●  ●  ●'; position: absolute; left: 10px; top: 6px; color: #5cecff; font: .47rem var(--mono); letter-spacing: 3px; }
.coverflow-card::after { content: ''; position: absolute; inset: 24px 4px 4px; pointer-events: none; background: linear-gradient(125deg, rgba(255,255,255,.1), transparent 34%); border-radius: 0 0 9px 9px; }
.coverflow-card img { width: 100%; height: 100%; display: block; object-fit: contain; object-position: center; border-radius: 0 0 9px 9px; background: #071a20; }
.coverflow-card > span { position: absolute; z-index: 3; left: 10px; bottom: 9px; padding: 6px 8px; border-radius: 7px; color: #eefbff; background: rgba(5,19,23,.88); font: 500 .52rem var(--mono); letter-spacing: .04em; text-transform: uppercase; backdrop-filter: blur(10px); }
.coverflow-card > span b { margin-right: 5px; color: #5cecff; }
.coverflow-card[data-position="0"] { z-index: 6; left: 50%; top: 50%; width: 76%; transform: translate(-50%,-50%) rotateX(1deg) scale(1); border-color: color-mix(in srgb, var(--lime) 65%, var(--line-strong)); box-shadow: 0 30px 75px rgba(0,0,0,.36), 0 0 55px color-mix(in srgb, var(--mint) 15%, transparent); filter: saturate(1); }
.coverflow-card[data-position="-1"] { z-index: 4; left: 18%; top: 18%; width: 40%; transform: translate(-50%,-50%) rotate(-8deg) rotateY(9deg) scale(.94); filter: saturate(.82) brightness(.8); }
.coverflow-card[data-position="1"] { z-index: 4; left: 82%; top: 18%; width: 40%; transform: translate(-50%,-50%) rotate(8deg) rotateY(-9deg) scale(.94); filter: saturate(.82) brightness(.8); }
.coverflow-card[data-position="-2"] { z-index: 2; left: 18%; top: 78%; width: 34%; transform: translate(-50%,-50%) rotate(7deg) rotateY(8deg) scale(.9); opacity: .74; filter: saturate(.68) brightness(.7); }
.coverflow-card[data-position="2"] { z-index: 2; left: 82%; top: 78%; width: 34%; transform: translate(-50%,-50%) rotate(-7deg) rotateY(-8deg) scale(.9); opacity: .74; filter: saturate(.68) brightness(.7); }
.coverflow-card[data-position="hidden"] { z-index: 0; left: 50%; top: 50%; width: 28%; opacity: 0; visibility: hidden; pointer-events: none; transform: translate(-50%,-50%) scale(.72); filter: saturate(.45) brightness(.55); }
.coverflow-card:not([data-position="0"]):hover { z-index: 7; opacity: 1; filter: saturate(1) brightness(1); border-color: var(--mint); box-shadow: 0 24px 55px rgba(0,0,0,.34); }
.coverflow-card.active > span { color: var(--on-accent); background: var(--lime); }
.coverflow-card.active > span b { color: var(--on-accent); }
.tour-heading { display: none; }
.tour-caption { color: var(--mint); }
.tour-controls { width: min(100%, 360px); margin: 12px 0 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.tour-control { width: 46px; height: 46px; flex: 0 0 46px; display: grid; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; background: var(--surface); color: var(--ink); cursor: pointer; }
.tour-control:active { transform: scale(.96); }
.tour-position { min-width: 0; flex: 1; display: grid; gap: 2px; text-align: center; }
.tour-count { color: var(--muted); font: .52rem var(--mono); letter-spacing: .08em; }

.requirement-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.section-subgrid, .requirement-grid + .timeline { margin-top: 32px; }
.requirement-card { padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--card); }
.requirement-card h3 { margin: 0 0 14px; font: 600 1.25rem var(--display); }
.requirement-card ul { margin: 0; padding-left: 18px; color: var(--ink-2); }
.requirement-card li + li { margin-top: 8px; }

.gallery { display: grid; gap: 30px; }
.gallery-item { margin: 0; }
.shot-frame { position: relative; overflow: hidden; padding: 10px; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); box-shadow: var(--shadow); }
.shot-frame::before { content: ''; position: absolute; z-index: 2; inset: 10px 10px auto; height: 25px; border-radius: 12px 12px 0 0; background: rgba(5,19,23,.94); }
.shot-frame::after { content: '●  ●  ●'; position: absolute; z-index: 3; left: 23px; top: 15px; color: #5cecff; font: .5rem var(--mono); letter-spacing: 4px; }
.shot-frame img { width: 100%; display: block; margin-top: 25px; border-radius: 0 0 12px 12px; transition: transform .7s ease; }
.gallery-item:hover .shot-frame img { transform: scale(1.015); }
.gallery-item figcaption { display: grid; grid-template-columns: 180px 1fr; gap: 26px; padding: 20px 8px 0; }
.gallery-item figcaption strong { font: 600 1rem var(--display); }
.gallery-item figcaption span { color: var(--ink-2); font-size: .9rem; }

.timeline { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.timeline-item { padding: 26px 24px 0 0; border-right: 1px solid var(--line); }
.timeline-item:last-child { border: 0; }
.timeline-item strong { display: block; color: var(--lime); font: 600 2rem var(--display); }
.timeline-item span { color: var(--muted); font: .68rem var(--mono); text-transform: uppercase; }
.timeline-item p { color: var(--ink-2); font-size: .86rem; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .hero-layout { grid-template-columns: 1fr; }
  .edastavez-hero-layout, .wide-product-hero { width: min(100% - 48px, 720px); grid-template-columns: 1fr; }
  .edastavez-hero-layout h1, .wide-product-hero h1 { font-size: clamp(3.6rem, 12vw, 6.2rem); }
  .hero-visual { min-height: 450px; }
  .product-hero { min-height: auto; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .process.five-step-process, .use-grid.investigation-use-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .five-step-process .step, .investigation-use-grid .use-card { grid-column: auto; }
  .five-step-process .step:nth-child(4), .investigation-use-grid .use-card:nth-child(4) { grid-column: auto; }
  .five-step-process .step:last-child, .investigation-use-grid .use-card:last-child { grid-column: 1 / -1; }
  .process, .stats, .timeline { grid-template-columns: repeat(2, 1fr); gap: 28px 0; }
  .process { gap: 0; }
  .process .step { border-bottom: 1px solid var(--line); }
  .process .step:nth-child(2n) { border-right: 0; }
  .process:not(.five-step-process) .step:nth-last-child(-n+2) { border-bottom: 0; }
  .process.five-step-process .step:nth-child(4) { border-bottom: 1px solid var(--line); }
  .process.five-step-process .step:last-child { border-right: 0; border-bottom: 0; }
  .digisampark-stats { grid-template-columns: repeat(2, 1fr); gap: 0; }
  .digisampark-stats .stat { border-top: 1px solid var(--line); }
  .digisampark-stats .stat:nth-child(-n+2) { border-top: 0; }
  .digisampark-stats .stat:nth-child(odd) { border-right: 1px solid var(--line); }
  .digisampark-stats .stat:nth-child(even) { border-right: 0; }
  .digisampark-proof-grid { grid-template-columns: repeat(2, 1fr); }
  .section-top { display: block; }
  .section-top .section-lead { margin-top: 22px; }
  .cta-box { display: block; }
  .cta-box .button { margin-top: 26px; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 32px, 560px); }
  .site-header { height: 64px; overflow: hidden; background: var(--bg); }
  .nav-wrap { width: 100%; padding-inline: 12px; display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 8px; }
  .brand { min-width: 0; gap: 8px; font-size: .84rem; }
  .brand-mark { width: 30px; flex: 0 0 30px; }
  .back-link { margin-left: 0; font-size: .64rem; white-space: nowrap; }
  .nav-actions { gap: 0; }
  .nav-actions .button { display: none; }
  .theme-toggle { width: 40px; height: 40px; flex: 0 0 40px; }
  .product-hero { padding: 98px 0 58px; }
  .product-hero::before { width: 520px; height: 520px; right: -300px; top: -220px; }
  .hero-layout, .edastavez-hero-layout, .wide-product-hero { width: min(100% - 32px, 560px); gap: 34px; }
  h1, .edastavez-hero-layout h1, .wide-product-hero h1 { max-width: 100%; font-size: clamp(3rem, 15.5vw, 4.25rem); line-height: .92; overflow-wrap: anywhere; }
  .product-kicker { max-width: 100%; margin-bottom: 20px; white-space: normal; line-height: 1.45; }
  .hero-tagline { line-height: 1.55; }
  .hero-copy { margin-top: 18px; font-size: 1rem; }
  .hero-actions { display: grid; grid-template-columns: 1fr; margin-top: 28px; }
  .hero-actions .button { width: 100%; min-height: 48px; }
  .hero-visual, .edastavez-hero-visual, .wide-product-visual { min-height: 300px; }
  .section { padding: 76px 0; }
  .section-top { margin-bottom: 38px; }
  .section-heading { font-size: clamp(2.25rem, 11vw, 3.35rem); overflow-wrap: anywhere; }
  .section-lead { font-size: .98rem; }
  .feature-grid, .use-grid, .requirement-grid, .investigation-use-grid { grid-template-columns: 1fr; }
  .process.five-step-process, .use-grid.investigation-use-grid { grid-template-columns: 1fr; }
  .five-step-process .step, .five-step-process .step:nth-child(4), .five-step-process .step:last-child, .investigation-use-grid .use-card, .investigation-use-grid .use-card:nth-child(4), .investigation-use-grid .use-card:last-child { min-height: 0; grid-column: auto; }
  .feature-card, .semantic-feature-grid .feature-card, .digisampark-capability-grid .feature-card, .use-card { min-height: 0; padding: 22px; }
  .investigation-use-grid .use-card { min-height: 0; padding: 22px; }
  .investigation-use-grid .use-card::before { width: 44px; height: 44px; border-radius: 13px; }
  .investigation-use-grid .use-card h3 { margin-top: 26px; }
  .responsible-use { padding: 26px 22px; border-radius: 18px; }
  .responsible-use h2 { font-size: clamp(2rem, 10vw, 3rem); }
  .responsible-use p { font-size: .9rem; }
  .feature-card h3 { margin-top: 28px; }
  .semantic-feature-grid .feature-card::before, .digisampark-feature-icon { width: 46px; height: 46px; border-radius: 13px; }
  .semantic-feature-grid .feature-card > span, .digisampark-capability-grid .feature-card .digisampark-feature-label { padding: 6px 9px; font-size: .5rem; }
  .semantic-feature-grid .feature-card h3 { margin-top: 26px; }
  .digisampark-feature-copy { margin-top: 0; padding-top: 26px; }
  .process, .stats, .timeline { grid-template-columns: 1fr; }
  .stats.capability-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; }
  .capability-stats .stat { min-width: 0; padding: 18px 14px; border-bottom: 1px solid var(--line); }
  .capability-stats .stat:nth-child(2) { border-right: 0; }
  .capability-stats .stat strong { font-size: clamp(1.25rem, 7vw, 1.8rem); overflow-wrap: anywhere; }
  .capability-stats .stat span { font-size: .52rem; line-height: 1.35; }
  .digisampark-stats { grid-template-columns: 1fr; }
  .digisampark-stats .stat, .digisampark-stats .stat:nth-child(odd) { border-right: 0; }
  .digisampark-proof-grid { grid-template-columns: 1fr; }
  .step { min-height: 0; padding: 22px; display: grid; grid-template-columns: 42px minmax(0, 1fr); column-gap: 15px; align-items: start; border-right: 0; border-bottom: 1px solid var(--line); }
  .step:last-child { border-bottom: 0; }
  .step-num { grid-row: 1 / 3; width: 38px; height: 38px; }
  .step h3 { grid-column: 2; margin: 1px 0 9px; padding-top: 0; }
  .step p { grid-column: 2; }
  .five-step-process .step { padding: 22px; grid-template-columns: 46px minmax(0, 1fr); border: 0; border-bottom: 1px solid var(--line); }
  .five-step-process .step:last-child { border-bottom: 0; }
  .five-step-process .step-num { width: 44px; height: 44px; flex-basis: 44px; border-radius: 13px; }
  .five-step-process .step h3 { margin: 1px 0 7px; padding-top: 0; }
  .stat, .timeline-item { border-right: 0; border-bottom: 1px solid var(--line); padding-bottom: 24px; }
  .gallery-item figcaption { grid-template-columns: 1fr; gap: 6px; }
  .coverflow-stage { height: 255px; margin-inline: 0; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); overflow: hidden; }
  .coverflow-stage::before, .coverflow-orbit { display: none; }
  .coverflow-card { pointer-events: none; }
  .coverflow-card:not([data-position="0"]) { left: 50%; top: 50%; width: 94%; opacity: 0; visibility: hidden; pointer-events: none; transform: translate(-50%,-50%) scale(.94); filter: none; }
  .coverflow-card[data-position="0"] { left: 50%; top: 50%; width: 94%; opacity: 1; visibility: visible; transform: translate(-50%,-50%); }
  .tour-controls { width: 100%; margin-top: 14px; }
  .tour-caption { flex: 1; text-align: center; font: .6rem var(--mono); letter-spacing: .06em; text-transform: uppercase; }
  .requirement-card { padding: 24px; }
  .shot-frame { padding: 6px; border-radius: 15px; }
  .shot-frame::before { inset: 6px 6px auto; }
  .shot-frame::after { left: 18px; top: 11px; }
  .gallery { gap: 42px; }
  .gallery-item figcaption { padding-inline: 2px; }
  .cta { padding-bottom: 72px; }
  .cta-box { padding: 32px 24px; border-radius: 20px; }
  .cta-box h2 { font-size: clamp(2.15rem, 11vw, 3.2rem); overflow-wrap: anywhere; }
  .cta-box .button { width: 100%; min-height: 48px; }
  .footer-row { flex-direction: column; }
}

@media (max-width: 380px) {
  .nav-wrap { padding-inline: 10px; gap: 6px; }
  .brand { font-size: .76rem; }
  .back-link { font-size: .59rem; }
  .theme-toggle { width: 38px; height: 38px; flex-basis: 38px; }
}

@media (hover: none), (pointer: coarse) {
  .button:hover, .semantic-feature-grid .feature-card:hover, .digisampark-capability-grid .feature-card:hover, .digisampark-proof-card:hover, .gallery-item:hover .shot-frame img { transform: none; }
  .button, .theme-toggle, .tour-control { min-height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}