/* DeepCOA Studio — Landing page styles */

html, body { background: var(--bg-0); color: var(--fg-0); font-family: var(--font-sans); }
body { overflow-x: hidden; }

/* Layout container */
.shell { max-width: 1360px; margin: 0 auto; padding: 0 32px; }

/* === Top nav === */
.topnav {
  position: sticky; top: 0; z-index: 50;
  height: 68px;
  display: flex; align-items: center; gap: 32px;
  padding: 0 32px;
  background: rgba(7,13,26,0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-1);
}
.topnav .brand-mark {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: 14px; letter-spacing: 0.04em;
  color: var(--fg-0);
  text-decoration: none;
}
.topnav .brand-mark b { font-weight: 700; letter-spacing: 0.08em; color: var(--cyan); }
.topnav .nav-links { display: flex; gap: 28px; margin-left: 24px; }
.topnav .nav-toggle {
  display: none;
  width: 36px; height: 36px;
  background: transparent; border: 1px solid var(--line-2);
  border-radius: var(--r-2);
  flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  cursor: pointer; padding: 0;
}
.topnav .nav-toggle span { display:block; width: 16px; height: 1.5px; background: var(--fg-1); }
.topnav .nav-cta { height: 36px; padding: 0 18px; font-size: 11.5px; font-weight: 700; }
.topnav .nav-links a {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--fg-2); text-decoration: none;
  transition: color 0.12s;
}
.topnav .nav-links a:hover { color: var(--fg-0); }
.topnav .spacer { flex: 1; }
.topnav .status {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.12em; color: var(--fg-2);
  text-transform: uppercase;
}
.topnav .status .dot { color: var(--green); }

/* "By DeepSentrics" badge in topnav */
.topnav .nav-by-ds {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
  padding: 6px 14px;
  border-left: 1px solid var(--line-1);
  margin-left: -8px;
  transition: opacity 0.14s;
}
.topnav .nav-by-ds .by-label {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.18em;
  color: var(--fg-2); text-transform: uppercase;
}
.topnav .nav-by-ds img {
  height: 26px; width: auto;
  opacity: 0.85;
  transition: opacity 0.14s;
}
.topnav .nav-by-ds:hover img { opacity: 1; }
.topnav .nav-by-ds:hover .by-label { color: var(--fg-0); }

/* === Hero === */
.hero {
  position: relative;
  padding: 64px 32px 48px;
  border-bottom: 1px solid var(--line-1);
  overflow: hidden;
}
.hero .grid-fade {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(79,209,217,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,209,217,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 35%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 35%, #000 30%, transparent 80%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.4fr);
  gap: 48px;
  max-width: 1360px;
  margin: 0 auto;
  align-items: stretch;
}
.hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.22em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 22px;
  display: inline-flex; align-items: center; gap: 10px;
}
.hero .eyebrow .pip { width: 6px; height: 6px; background: var(--cyan); display: inline-block; border-radius: 50%; box-shadow: 0 0 10px var(--cyan); }
.hero h1 {
  font-family: var(--font-sans);
  font-size: 64px;
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-weight: 500;
  margin: 0 0 24px;
  color: var(--fg-0);
  text-wrap: balance;
}
.hero h1 em {
  font-style: normal;
  color: var(--cyan);
  position: relative;
  white-space: nowrap;
}
.hero .lede {
  font-size: 17px;
  line-height: 1.55;
  color: var(--fg-1);
  margin: 0 0 32px;
  max-width: 520px;
  text-wrap: pretty;
}
.hero .cta-row { display: flex; gap: 12px; margin-bottom: 40px; }
.btn-lg {
  display: inline-flex; align-items: center; gap: 10px;
  height: 52px; padding: 0 28px;
  font-family: var(--font-mono);
  font-size: 13px; letter-spacing: 0.16em; text-transform: uppercase;
  font-weight: 700;
  border: 1px solid;
  border-radius: var(--r-2);
  cursor: pointer;
  transition: all 0.14s;
  text-decoration: none;
}
.btn-lg.primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #070d1a;
}
.btn-lg.primary:hover { box-shadow: 0 0 24px rgba(79,209,217,0.4); }
.btn-lg.ghost {
  background: transparent;
  border-color: var(--line-3);
  color: var(--fg-0);
}
.btn-lg.ghost:hover { border-color: var(--fg-1); background: var(--bg-2); }
.btn-lg .arrow { font-family: var(--font-mono); }

.hero .meta-row {
  display: flex; gap: 32px;
  padding-top: 22px;
  border-top: 1px solid var(--line-1);
}
.hero .meta-row .item .k {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--fg-2);
  margin-bottom: 6px;
}
.hero .meta-row .item .v {
  font-family: var(--font-mono);
  font-size: 13px; color: var(--fg-0);
}

/* === Hero viz panel === */
.viz-panel {
  background: var(--bg-1);
  border: 1px solid var(--line-2);
  border-radius: var(--r-3);
  overflow: hidden;
  display: flex; flex-direction: column;
  min-height: 540px;
  box-shadow: var(--shadow-2);
}
.viz-head {
  display: flex; align-items: center;
  padding: 10px 14px; gap: 14px;
  border-bottom: 1px solid var(--line-1);
  background: linear-gradient(180deg, #0e1828, #091222);
}
.viz-head .lights { display: flex; gap: 6px; }
.viz-head .lights span { width: 8px; height: 8px; border-radius: 50%; background: var(--bg-4); }
.viz-head .title {
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--fg-1);
}
.viz-head .running {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--amber);
  display: flex; align-items: center; gap: 8px;
}
.viz-head .running .pulse {
  width: 6px; height: 6px; background: var(--amber); border-radius: 50%;
  animation: pulse 1.4s ease-out infinite;
}
.viz-body {
  flex: 1; min-height: 0;
  display: grid;
  grid-template-columns: 220px 1fr;
}
.voice-col {
  border-right: 1px solid var(--line-1);
  padding: 16px 14px;
  display: flex; flex-direction: column; gap: 10px;
  min-width: 0;
}
.voice-col .label {
  font-family: var(--font-mono);
  font-size: 9.5px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-2);
  display: flex; align-items: center; justify-content: space-between;
}
.voice-col .mic-status {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px; color: var(--cyan);
  padding: 8px 10px;
  background: var(--cyan-soft);
  border: 1px solid rgba(79,209,217,0.3);
  border-radius: var(--r-2);
}
.voice-col .waveform {
  display: flex; align-items: center; gap: 2px; height: 14px;
}
.voice-col .waveform i {
  width: 2px; background: var(--cyan); border-radius: 1px;
  animation: wave 0.8s ease-in-out infinite;
}
.voice-col .waveform i:nth-child(1) { height: 30%; animation-delay: 0s; }
.voice-col .waveform i:nth-child(2) { height: 70%; animation-delay: 0.1s; }
.voice-col .waveform i:nth-child(3) { height: 100%; animation-delay: 0.2s; }
.voice-col .waveform i:nth-child(4) { height: 60%; animation-delay: 0.3s; }
.voice-col .waveform i:nth-child(5) { height: 40%; animation-delay: 0.4s; }
.voice-col .waveform i:nth-child(6) { height: 80%; animation-delay: 0.5s; }
@keyframes wave {
  0%, 100% { transform: scaleY(0.6); opacity: 0.7; }
  50% { transform: scaleY(1.4); opacity: 1; }
}
.voice-col .transcript {
  flex: 1;
  font-size: 12.5px; line-height: 1.5;
  color: var(--fg-0);
  overflow: hidden;
}
.voice-col .transcript .line {
  margin-bottom: 8px;
  opacity: 0;
  transform: translateY(4px);
  animation: lineIn 0.4s ease forwards;
}
.voice-col .transcript .line.constraint { color: var(--amber); font-family: var(--font-mono); font-size: 11.5px; padding-left: 10px; border-left: 2px solid var(--amber); }
@keyframes lineIn { to { opacity: 1; transform: translateY(0); } }
.voice-col .doctrine-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 8px;
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--r-1);
  font-family: var(--font-mono);
  font-size: 9.5px; color: var(--fg-1); letter-spacing: 0.08em;
}
.voice-col .doctrine-tag b { color: var(--cyan); font-weight: 600; }

.scatter-col {
  position: relative; min-width: 0;
  display: flex; flex-direction: column;
}
.scatter-col .top-bar {
  display: flex; align-items: center; gap: 16px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line-1);
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.1em;
  color: var(--fg-2); text-transform: uppercase;
}
.scatter-col .top-bar .progress {
  flex: 1; height: 3px; background: var(--bg-3); border-radius: 2px; overflow: hidden;
  margin: 0 8px;
}
.scatter-col .top-bar .progress > div {
  height: 100%; background: var(--cyan); transition: width 80ms linear;
}
.scatter-col .funnel {
  display: flex; gap: 20px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line-1);
  font-family: var(--font-mono);
  font-size: 10.5px;
}
.scatter-col .funnel .stage { display: flex; gap: 8px; align-items: baseline; }
.scatter-col .funnel .stage .k { color: var(--fg-2); letter-spacing: 0.1em; text-transform: uppercase; font-size: 9.5px; }
.scatter-col .funnel .stage .v { color: var(--fg-0); }
.scatter-col .funnel .stage .v.amber { color: var(--amber); }
.scatter-col .funnel .stage .v.cyan { color: var(--cyan); }
.scatter-col .funnel .stage .v.green { color: var(--green); }
.scatter-col .scatter {
  flex: 1; min-height: 0;
  position: relative;
}
.scatter-col .scatter svg { width: 100%; height: 100%; display: block; }

/* Capability bar */
.kpi-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-1);
  border-bottom: 1px solid var(--line-1);
  background: var(--bg-1);
}
.kpi-bar .kpi {
  padding: 28px 32px;
  border-right: 1px solid var(--line-1);
}
.kpi-bar .kpi:last-child { border-right: 0; }
.kpi-bar .kpi .v {
  font-family: var(--font-mono);
  font-size: 32px; font-weight: 500;
  color: var(--fg-0);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}
.kpi-bar .kpi .v small { font-size: 16px; color: var(--fg-2); margin-left: 4px; }
.kpi-bar .kpi .v .arrow { color: var(--cyan); margin: 0 6px; }
.kpi-bar .kpi .k {
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--fg-2);
}

/* === Section base === */
.section {
  padding: 96px 32px;
  border-bottom: 1px solid var(--line-1);
}
.section .head { max-width: 760px; margin: 0 auto 56px; text-align: center; }
.section .head .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.22em;
  color: var(--cyan); text-transform: uppercase;
  margin-bottom: 16px;
}
.section h2 {
  font-size: 42px; line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 500;
  margin: 0 0 16px;
  color: var(--fg-0);
  text-wrap: balance;
}
.section .desc {
  font-size: 16px; line-height: 1.55;
  color: var(--fg-1);
  text-wrap: pretty;
}

/* === How it works === */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  max-width: 1360px; margin: 0 auto;
  border: 1px solid var(--line-2);
  border-radius: var(--r-3);
  overflow: hidden;
  background: var(--bg-1);
}
.step {
  padding: 28px 26px 32px;
  border-right: 1px solid var(--line-1);
  position: relative;
  display: flex; flex-direction: column;
  min-height: 320px;
}
.step:last-child { border-right: 0; }
.step .num {
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.18em;
  color: var(--fg-2); text-transform: uppercase;
  margin-bottom: 14px;
}
.step .num b { color: var(--cyan); }
.step h3 {
  font-size: 19px; line-height: 1.25;
  font-weight: 500;
  margin: 0 0 10px;
  color: var(--fg-0);
  letter-spacing: -0.01em;
}
.step p {
  font-size: 13.5px; line-height: 1.55;
  color: var(--fg-1);
  margin: 0 0 18px;
  flex: 1;
}
.step .vis {
  height: 90px;
  border-top: 1px solid var(--line-1);
  margin: 0 -26px -32px;
  padding: 16px 26px;
  background: rgba(255,255,255,0.01);
  display: flex; align-items: center;
}
.step .vis svg { width: 100%; height: 100%; }

/* === Capabilities grid === */
.caps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-1);
  max-width: 1360px;
  margin: 0 auto;
  border: 1px solid var(--line-2);
  border-radius: var(--r-3);
  overflow: hidden;
}
.cap {
  padding: 32px 28px;
  background: var(--bg-1);
  display: flex; flex-direction: column; gap: 12px;
  min-height: 220px;
}
.cap .icon {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line-3);
  border-radius: var(--r-2);
  color: var(--cyan);
}
.cap h4 {
  font-size: 16px; font-weight: 500;
  margin: 0;
  color: var(--fg-0);
  letter-spacing: -0.005em;
}
.cap p {
  font-size: 13px; line-height: 1.55;
  color: var(--fg-1);
  margin: 0;
}
.cap .tag {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 9.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--fg-2);
}

/* === Product preview === */
.preview-tabs-wrap {
  max-width: 1360px; margin: 0 auto 20px;
  display: flex; flex-direction: column; gap: 10px;
  align-items: center;
}
.preview-tabs-hint {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--cyan);
}
.preview-tabs-hint .arrow { animation: nudge 1.6s ease-in-out infinite; }
@keyframes nudge { 0%,100% { transform: translateY(0); } 50% { transform: translateY(3px); } }

.preview-tabs {
  display: flex; gap: 8px;
  padding: 6px;
  background: var(--bg-1);
  border: 1px solid var(--line-2);
  border-radius: var(--r-3);
  width: fit-content;
}
.preview-tabs button {
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 700;
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  padding: 12px 18px;
  color: var(--fg-1);
  cursor: pointer;
  border-radius: var(--r-2);
  transition: all 0.14s;
  display: inline-flex; align-items: center; gap: 10px;
}
.preview-tabs button .num {
  font-size: 9.5px; color: var(--fg-3); letter-spacing: 0.18em;
}
.preview-tabs button .caret {
  opacity: 0; transform: translateX(-4px);
  transition: all 0.14s;
  color: var(--cyan);
}
.preview-tabs button:hover {
  color: var(--fg-0);
  border-color: var(--line-3);
  background: var(--bg-3);
}
.preview-tabs button:hover .caret { opacity: 1; transform: translateX(0); }
.preview-tabs button.active {
  background: var(--cyan-soft);
  border-color: rgba(79,209,217,0.5);
  color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(79,209,217,0.15), 0 0 12px rgba(79,209,217,0.18);
}
.preview-tabs button.active .num { color: var(--cyan); opacity: 0.7; }
.preview-tabs button.active .caret { opacity: 1; transform: translateX(0); color: var(--cyan); }
.preview-frame {
  max-width: 1360px;
  margin: 0 auto;
  border: 1px solid var(--line-2);
  border-radius: var(--r-3);
  overflow: hidden;
  background: var(--bg-1);
  box-shadow: var(--shadow-2);
}
.preview-frame .pf-head {
  height: 36px;
  background: linear-gradient(180deg, #0e1828, #091222);
  border-bottom: 1px solid var(--line-1);
  display: flex; align-items: center; gap: 12px;
  padding: 0 14px;
}
.preview-frame .pf-head .lights { display: flex; gap: 6px; }
.preview-frame .pf-head .lights span { width: 8px; height: 8px; border-radius: 50%; background: var(--bg-4); }
.preview-frame .pf-head .crumb {
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--fg-2);
}
.preview-frame .pf-head .crumb b { color: var(--fg-0); }
.preview-body { min-height: 480px; padding: 24px; }

/* === Integrations === */
/* === Integrations: API/MCP surfaces === */
.int-surfaces {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  max-width: 1360px; margin: 0 auto;
  border: 1px solid var(--line-2);
  border-radius: var(--r-3);
  overflow: hidden;
  background: var(--bg-1);
}
.int-surface {
  padding: 32px 28px 28px;
  border-right: 1px solid var(--line-1);
  display: flex; flex-direction: column; gap: 12px;
  position: relative;
}
.int-surface:last-child { border-right: 0; }
.int-surface .int-kind {
  display: inline-flex; align-items: center; justify-content: center;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.22em; font-weight: 700;
  color: var(--cyan);
  background: color-mix(in oklch, var(--cyan) 10%, var(--bg-1));
  border: 1px solid color-mix(in oklch, var(--cyan) 35%, transparent);
  padding: 5px 10px;
  border-radius: 3px;
  margin-bottom: 4px;
}
.int-surface h4 {
  font-size: 17px; font-weight: 500;
  color: var(--fg-0);
  letter-spacing: -0.005em;
  margin: 0;
}
.int-surface p {
  font-size: 13px; line-height: 1.55;
  color: var(--fg-1);
  margin: 0;
}
.int-surface .int-tag {
  margin-top: auto;
  padding-top: 14px;
  font-family: var(--font-mono);
  font-size: 9.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--fg-2);
  border-top: 1px dashed var(--line-1);
}

.int-platforms { max-width: 1360px; margin: 0 auto; }
.int-platforms-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 18px; flex-wrap: wrap;
  padding-bottom: 14px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line-1);
}
.int-platforms-head .lbl {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--fg-0);
}
.int-platforms-head .hint {
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.12em;
  color: var(--fg-2);
}

.integrations {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--line-2);
  border-radius: var(--r-3);
  overflow: hidden;
  background: var(--bg-1);
}
.integration {
  padding: 22px 18px;
  border-right: 1px solid var(--line-1);
  border-bottom: 1px solid var(--line-1);
  display: flex; flex-direction: column; gap: 6px;
  position: relative;
}
.integration:nth-child(4n) { border-right: 0; }
.integration:nth-last-child(-n+4) { border-bottom: 0; }
.integration .cat {
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 4px;
}
.integration .name {
  font-family: var(--font-mono);
  font-size: 14px; color: var(--fg-0); font-weight: 600;
  letter-spacing: 0.04em;
}
.integration .desc {
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.06em;
  color: var(--fg-2);
}

.programs {
  max-width: 1360px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.program {
  background: var(--bg-1);
  border: 1px solid var(--line-2);
  border-radius: var(--r-3);
  padding: 24px;
}
.program .stamp {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--line-3);
  font-family: var(--font-mono);
  font-size: 9.5px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-1);
  margin-bottom: 16px;
}
.program .stamp.active { color: var(--cyan); border-color: rgba(79,209,217,0.4); }
.program h5 {
  font-size: 15px; font-weight: 500; margin: 0 0 6px;
  color: var(--fg-0);
}
.program .meta {
  font-family: var(--font-mono);
  font-size: 11px; color: var(--fg-2);
}

/* === Footer CTA === */
.footer-cta {
  padding: 96px 32px;
  text-align: center;
  background:
    radial-gradient(ellipse 60% 80% at 50% 50%, rgba(79,209,217,0.08), transparent 60%),
    var(--bg-0);
  border-bottom: 1px solid var(--line-1);
}
.footer-cta h2 {
  font-size: 56px;
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-weight: 500;
  max-width: 880px;
  margin: 0 auto 20px;
  color: var(--fg-0);
  text-wrap: balance;
}
.footer-cta h2 em { font-style: normal; color: var(--cyan); }
.footer-cta p {
  font-size: 16px; color: var(--fg-1);
  max-width: 580px; margin: 0 auto 36px;
}
.footer-cta .ctas { display: flex; gap: 12px; justify-content: center; }

footer {
  padding: 40px 32px;
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--fg-2);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px;
}
footer .left { display: flex; gap: 24px; align-items: center; }
footer .right { display: flex; gap: 24px; }
footer a { color: var(--fg-2); text-decoration: none; }
footer a:hover { color: var(--fg-0); }

/* Responsive */
@media (max-width: 1100px) {
  .shell { padding: 0 24px; }
  .hero { padding: 48px 24px 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 44px; }
  .hero .lede { max-width: 100%; font-size: 16px; }
  .viz-panel { min-height: 460px; }
  .kpi-bar { grid-template-columns: repeat(2, 1fr); }
  .kpi-bar .kpi { padding: 22px 24px; }
  .kpi-bar .kpi:nth-child(2n) { border-right: 0; }
  .kpi-bar .kpi:nth-child(-n+2) { border-bottom: 1px solid var(--line-1); }
  .section { padding: 72px 24px; }
  .section h2 { font-size: 34px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step:nth-child(2n) { border-right: 0; }
  .step:nth-child(-n+2) { border-bottom: 1px solid var(--line-1); }
  .caps { grid-template-columns: repeat(2, 1fr); }
  .int-surfaces { grid-template-columns: 1fr; }
  .int-surface { border-right: 0; border-bottom: 1px solid var(--line-1); }
  .int-surface:last-child { border-bottom: 0; }
  .integrations { grid-template-columns: repeat(3, 1fr); }
  .integration { border-right: 1px solid var(--line-1); border-bottom: 1px solid var(--line-1); }
  .integration:nth-child(4n) { border-right: 1px solid var(--line-1); }
  .integration:nth-child(3n) { border-right: 0; }
  .integration:nth-last-child(-n+4) { border-bottom: 1px solid var(--line-1); }
  .integration:nth-last-child(-n+3) { border-bottom: 0; }
  .programs { grid-template-columns: 1fr; }
  .footer-cta h2 { font-size: 40px; }
  .footer-cta { padding: 72px 24px; }
}

@media (max-width: 760px) {
  .topnav { padding: 0 18px; gap: 12px; height: 56px; position: relative; }
  .topnav .status { display: none; }
  .topnav .nav-by-ds { display: none; }
  .topnav .nav-cta { display: none; }
  .topnav .spacer { display: none; }
  .topnav .nav-toggle { display: flex; margin-left: auto; }
  .topnav .nav-links {
    position: absolute; top: 56px; left: 0; right: 0;
    display: none;
    flex-direction: column; gap: 0;
    margin-left: 0;
    background: rgba(7,13,26,0.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line-1);
  }
  .topnav .nav-links.open { display: flex; }
  .topnav .nav-links a {
    padding: 16px 24px;
    border-bottom: 1px solid var(--line-1);
    font-size: 12px;
  }
  .hero { padding: 36px 18px 32px; }
  .hero h1 { font-size: 34px; line-height: 1.05; }
  .hero .lede { font-size: 15px; }
  .hero .meta-row { flex-wrap: wrap; gap: 18px 28px; }
  .hero .cta-row { flex-direction: column; align-items: stretch; }
  .btn-lg { justify-content: center; }
  .viz-panel { min-height: 0; }
  .viz-body { grid-template-columns: 1fr; }
  .voice-col { border-right: 0; border-bottom: 1px solid var(--line-1); }
  .voice-col .transcript { max-height: 130px; }
  .scatter-col .scatter { min-height: 280px; }
  .scatter-col .funnel { flex-wrap: wrap; gap: 12px 18px; }
  .kpi-bar { grid-template-columns: 1fr; }
  .kpi-bar .kpi { border-right: 0; border-bottom: 1px solid var(--line-1); padding: 20px 24px; }
  .kpi-bar .kpi:last-child { border-bottom: 0; }
  .kpi-bar .kpi .v { font-size: 26px; }
  .section { padding: 56px 18px; }
  .section .head { margin-bottom: 36px; }
  .section h2 { font-size: 26px; }
  .section .desc { font-size: 14px; }
  .steps { grid-template-columns: 1fr; }
  .step { border-right: 0; border-bottom: 1px solid var(--line-1); min-height: 0; padding: 24px 22px; }
  .step:last-child { border-bottom: 0; }
  .step .vis { margin: 0 -22px -24px; padding: 14px 22px; height: 70px; }
  .caps { grid-template-columns: 1fr; }
  .cap { min-height: 0; padding: 24px 22px; }
  .integrations { grid-template-columns: repeat(2, 1fr); }
  .integration { border-right: 1px solid var(--line-1); border-bottom: 1px solid var(--line-1); }
  .integration:nth-child(3n) { border-right: 1px solid var(--line-1); }
  .integration:nth-child(2n) { border-right: 0; }
  .integration:nth-last-child(-n+3) { border-bottom: 1px solid var(--line-1); }
  .integration:nth-last-child(-n+2) { border-bottom: 0; }
  .preview-tabs { width: 100%; overflow-x: auto; }
  .preview-tabs button { padding: 9px 12px; font-size: 9.5px; white-space: nowrap; gap: 6px; }
  .preview-tabs button .num { font-size: 8.5px; }
  .preview-body { padding: 14px; min-height: 360px; }
  .footer-cta { padding: 56px 20px; }
  .footer-cta h2 { font-size: 30px; }
  .footer-cta p { font-size: 14px; }
  .footer-cta .ctas { flex-direction: column; }
  footer { flex-direction: column; align-items: flex-start; gap: 12px; padding: 28px 20px; }
  footer .left, footer .right { flex-wrap: wrap; gap: 14px; }
}

/* Legacy block kept for guard — above queries supersede */
@media (max-width: 1100px) and (min-width: 1101px) {
  .hero-grid { grid-template-columns: 1fr; }
  .kpi-bar { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .caps { grid-template-columns: repeat(2, 1fr); }
  .int-surfaces { grid-template-columns: 1fr; }
  .integrations { grid-template-columns: repeat(3, 1fr); }
  .programs { grid-template-columns: 1fr; }
  .hero h1 { font-size: 48px; }
}

/* === Request a demo block === */
.demo-section {
  padding: 96px 32px;
  border-top: 1px solid var(--line-1);
  border-bottom: 1px solid var(--line-1);
  background:
    radial-gradient(ellipse 900px 400px at 80% 0%, color-mix(in oklch, var(--cyan) 9%, transparent), transparent 60%),
    var(--bg-0);
  position: relative;
}
.demo-shell {
  max-width: 1280px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
  align-items: start;
}
.demo-left .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 18px;
}
.demo-left h2 {
  font-size: 56px; line-height: 1.02;
  letter-spacing: -0.02em;
  font-weight: 600;
  margin: 0 0 20px;
  text-wrap: balance;
}
.demo-left h2 em { font-style: normal; color: var(--cyan); }
.demo-left .lede {
  font-size: 17px; color: var(--fg-1); line-height: 1.5;
  max-width: 480px;
}
.demo-list {
  list-style: none; padding: 0; margin: 28px 0 32px;
  display: flex; flex-direction: column; gap: 12px;
  font-family: var(--font-mono);
  font-size: 13px; color: var(--fg-1);
}
.demo-list li { display: flex; gap: 12px; align-items: flex-start; }
.demo-list .b { color: var(--cyan); font-weight: 700; }
.capability-link {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 18px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-2);
  background: var(--bg-2);
  color: var(--fg-0);
  text-decoration: none;
  transition: all 0.14s;
  max-width: 460px;
}
.capability-link:hover {
  border-color: var(--cyan);
  background: color-mix(in oklch, var(--cyan) 6%, var(--bg-2));
}
.capability-link .ico {
  font-family: var(--font-mono);
  font-size: 10px; font-weight: 700; letter-spacing: 0.1em;
  background: var(--cyan); color: var(--bg-0);
  padding: 6px 8px; border-radius: 3px;
  flex-shrink: 0;
}
.capability-link .t { font-size: 14px; font-weight: 600; }
.capability-link .d { font-size: 12px; color: var(--fg-2); margin-top: 2px; font-family: var(--font-mono); letter-spacing: 0.04em; }
.capability-link .arrow { margin-left: auto; color: var(--fg-2); font-family: var(--font-mono); }
.capability-link:hover .arrow { color: var(--cyan); }
.capability-link .dl-arrow {
  margin-left: auto;
  color: var(--fg-2);
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  background: var(--bg-1);
  transition: all 0.16s;
  flex-shrink: 0;
}
.capability-link:hover .dl-arrow {
  color: var(--cyan);
  border-color: var(--cyan);
  background: color-mix(in oklch, var(--cyan) 10%, var(--bg-1));
  transform: translateY(2px);
}

.demo-form {
  background: var(--bg-1);
  border: 1px solid var(--line-2);
  border-radius: var(--r-3);
  padding: 28px;
  position: relative;
  overflow: hidden;
}
.demo-form::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, color-mix(in oklch, var(--cyan) 4%, transparent), transparent 200px);
  pointer-events: none;
}
.form-head {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.16em; color: var(--fg-2);
  padding-bottom: 18px; margin-bottom: 22px;
  border-bottom: 1px solid var(--line-1);
  position: relative;
}
.form-head .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px var(--green);
}
.form-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  position: relative;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field > span {
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--fg-2);
}
.field .opt { color: var(--fg-3); text-transform: none; letter-spacing: 0.04em; }
.field input[type="text"],
.field input[type="email"],
.field select,
.field textarea {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  color: var(--fg-0);
  font-family: inherit;
  font-size: 14px;
  padding: 11px 13px;
  border-radius: var(--r-1);
  outline: none;
  transition: border-color 0.14s, background 0.14s;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--cyan);
  background: color-mix(in oklch, var(--cyan) 4%, var(--bg-2));
}
.field textarea { resize: vertical; font-family: inherit; line-height: 1.5; }
.field select {
  appearance: none; -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--fg-2) 50%), linear-gradient(135deg, var(--fg-2) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 36px;
}
.field.checkrow {
  flex-direction: row; gap: 10px; align-items: flex-start;
  font-family: var(--font-mono);
  font-size: 11px; line-height: 1.5; color: var(--fg-2);
  letter-spacing: 0.04em;
  padding: 12px 0 4px;
}
.field.checkrow input { margin-top: 2px; accent-color: var(--cyan); width: 14px; height: 14px; flex-shrink: 0; }
.form-foot {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line-1);
  flex-wrap: wrap; gap: 14px;
  position: relative;
}
.form-foot .muted {
  font-family: var(--font-mono);
  font-size: 11px; color: var(--fg-2); letter-spacing: 0.06em;
}
.form-foot .muted a { color: var(--cyan); text-decoration: none; }
.form-foot .muted a:hover { text-decoration: underline; }

.demo-confirm {
  grid-column: 1 / -1;
  text-align: center;
  max-width: 720px; margin: 0 auto;
  padding: 56px 24px;
}
.confirm-stamp {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.22em;
  color: var(--green);
  border: 1px solid var(--green);
  padding: 8px 14px; border-radius: 3px;
  margin-bottom: 28px;
}
.demo-confirm h2 {
  font-size: 48px; line-height: 1.04;
  letter-spacing: -0.02em; font-weight: 600;
  margin: 0 0 18px;
}
.demo-confirm h2 em { font-style: normal; color: var(--cyan); }
.demo-confirm p { font-size: 16px; color: var(--fg-1); max-width: 520px; margin: 0 auto 36px; line-height: 1.5; }
.confirm-meta {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--line-2);
  border: 1px solid var(--line-2);
  border-radius: var(--r-2); overflow: hidden;
}
.confirm-meta > div {
  background: var(--bg-1);
  padding: 16px;
  display: flex; flex-direction: column; gap: 4px;
  font-family: var(--font-mono);
}
.confirm-meta .k { font-size: 10px; letter-spacing: 0.16em; color: var(--fg-2); text-transform: uppercase; }
.confirm-meta .v { font-size: 14px; color: var(--fg-0); font-weight: 600; }

/* === Footer "A product by DeepSentrics" === */
.by-ds {
  display: flex; align-items: center; gap: 16px;
  text-decoration: none;
  padding: 8px 16px;
  border-left: 1px solid var(--line-1);
  transition: opacity 0.14s;
}
.by-ds:hover { opacity: 1; }
.by-ds .by-label {
  font-family: var(--font-mono);
  font-size: 13.5px; letter-spacing: 0.16em;
  color: var(--fg-2); text-transform: uppercase;
}
.by-ds img {
  height: 42px; width: auto;
  opacity: 0.85;
  transition: opacity 0.14s;
}
.by-ds:hover img { opacity: 1; }

@media (max-width: 1100px) {
  .demo-shell { grid-template-columns: 1fr; gap: 36px; }
  .demo-left h2 { font-size: 44px; }
}
@media (max-width: 720px) {
  .demo-section { padding: 64px 20px; }
  .demo-form { padding: 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .demo-left h2 { font-size: 32px; }
  .demo-confirm h2 { font-size: 28px; }
  .confirm-meta { grid-template-columns: 1fr; }
  .by-ds { border-left: none; padding-left: 0; }
}