/* ============================================================
   SINWAR TELECOM SYSTEMS — design system
   Subject: spiral (OAM) modulation for optical telecom.
   Palette pulled from a diffracted beam: near-black "night fiber"
   background, violet + cyan as the twinned modes of a light wave,
   amber held back for the one active call to action.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #080B14;
  --bg-elevated: #0F1526;
  --bg-card: #131b31;
  --bg-card-hover: #172040;
  --text: #EAEDF7;
  --text-dim: #99A1C0;
  --text-faint: #5B6486;
  --violet: #9B7BFF;
  --violet-dim: #6C56B8;
  --cyan: #3CE7CF;
  --amber: #FFB454;
  --hairline: rgba(234, 237, 247, 0.09);
  --hairline-strong: rgba(234, 237, 247, 0.16);
  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;
  --max: 1160px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* subtle drifting starfield / grain backdrop, fixed behind content */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1px 1px at 12% 22%, rgba(255,255,255,0.35), transparent 60%),
    radial-gradient(1px 1px at 82% 15%, rgba(255,255,255,0.25), transparent 60%),
    radial-gradient(1px 1px at 60% 70%, rgba(255,255,255,0.2), transparent 60%),
    radial-gradient(1px 1px at 30% 85%, rgba(255,255,255,0.3), transparent 60%),
    radial-gradient(1px 1px at 92% 55%, rgba(255,255,255,0.18), transparent 60%),
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(155,123,255,0.14), transparent 60%);
}

a { color: inherit; }
img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}

p { margin: 0; }

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.eyebrow::before {
  content: '';
  width: 18px;
  height: 1px;
  background: var(--cyan);
  display: inline-block;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

/* ---------------- NAV ---------------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 11, 20, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hairline);
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
}

.brand img {
  height: 32px;
  width: 32px;
  border-radius: 8px;
  object-fit: contain;
}

.brand .tag {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  border-left: 1px solid var(--hairline-strong);
  padding-left: 10px;
  margin-left: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--text); }

.nav-links a.cta {
  color: var(--bg);
  background: var(--cyan);
  padding: 9px 16px;
  border-radius: 100px;
  font-weight: 600;
}

.nav-links a.cta:hover { background: #62efd9; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--hairline-strong);
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-s);
  font-size: 1.1rem;
  cursor: pointer;
}

@media (max-width: 820px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .site-nav.open .nav-links {
    display: flex;
    position: absolute;
    top: 68px;
    left: 0; right: 0;
    background: var(--bg-elevated);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 28px 26px;
    border-bottom: 1px solid var(--hairline);
    gap: 18px;
  }
  .site-nav.open .nav-links a.cta { margin-top: 4px; }
}

/* ---------------- BUTTONS ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.94rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease;
  font-family: var(--font-body);
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  background: linear-gradient(135deg, var(--violet), #7857e0);
  color: white;
}
.btn-primary:hover { filter: brightness(1.08); }

.btn-ghost {
  background: transparent;
  border-color: var(--hairline-strong);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

.btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------------- HERO ---------------- */

.hero {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .oam-visual { max-width: 320px; margin-top: 10px; }
}

.hero h1 {
  font-size: clamp(2.3rem, 4.4vw, 3.6rem);
  line-height: 1.06;
  margin: 18px 0 22px;
}

.hero h1 .accent {
  background: linear-gradient(100deg, var(--cyan), var(--violet) 70%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-kicker {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.12rem;
  color: var(--text);
  margin-bottom: 14px;
}

.hero-sub {
  color: var(--text-dim);
  font-size: 1.08rem;
  max-width: 46ch;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 46px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 34px;
}

.stat-row .stat-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
}
.stat-row .stat-num span { color: var(--cyan); }
.stat-row .stat-label {
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 4px;
}

@media (max-width: 560px) {
  .stat-row { grid-template-columns: 1fr 1fr; gap: 24px; }
}

/* --- OAM spiral signature visual --- */

.oam-visual {
  position: relative;
  aspect-ratio: 1;
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
}

.oam-visual svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.oam-spin {
  transform-origin: 200px 200px;
  animation: oam-rotate 40s linear infinite;
}

@keyframes oam-rotate {
  to { transform: rotate(360deg); }
}

.oam-arm {
  fill: none;
  stroke-width: 2.4;
  stroke-linecap: round;
}
.oam-arm-0 { stroke: var(--violet); opacity: 0.95; }
.oam-arm-1 { stroke: var(--cyan); opacity: 0.8; }
.oam-arm-2 { stroke: #d9c9ff; opacity: 0.55; }

.oam-ring {
  fill: none;
  stroke: var(--hairline-strong);
  stroke-width: 1;
  stroke-dasharray: 2 6;
}

.oam-core {
  fill: url(#coreGlow);
}

.oam-mode-label {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--text-faint);
}

/* ---------------- SECTIONS ---------------- */

section { position: relative; z-index: 1; }

.section {
  padding: 96px 0;
  border-top: 1px solid var(--hairline);
}

.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  margin-top: 14px;
}

.section-head p {
  color: var(--text-dim);
  margin-top: 16px;
  font-size: 1.02rem;
}

/* ---------------- MODES / EXPLAINER ---------------- */

.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.mode-card {
  background: var(--bg-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-m);
  padding: 28px 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.mode-card:hover {
  border-color: var(--hairline-strong);
  transform: translateY(-3px);
}

.mode-card .mode-l {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--violet);
  margin-bottom: 14px;
  display: block;
}

.mode-card h3 {
  font-size: 1.12rem;
  margin-bottom: 10px;
}

.mode-card p {
  color: var(--text-dim);
  font-size: 0.95rem;
}

@media (max-width: 800px) {
  .mode-grid { grid-template-columns: 1fr; }
}

/* ---------------- COMPARISON TABLE ---------------- */

.compare-wrap {
  overflow-x: auto;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-m);
  background: var(--bg-card);
}

table.compare {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

table.compare th, table.compare td {
  text-align: left;
  padding: 16px 20px;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.94rem;
}

table.compare th {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 500;
  background: var(--bg-elevated);
}

table.compare td:first-child, table.compare th:first-child {
  color: var(--text-dim);
}

table.compare td.hi {
  color: var(--cyan);
  font-weight: 600;
}

table.compare tr:last-child td { border-bottom: none; }

/* ---------------- SINWAR 1 / SPLIT SECTION ---------------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.split .split-media {
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--hairline-strong);
  aspect-ratio: 4/3;
}

.split .split-media img {
  width: 100%; height: 100%; object-fit: cover;
}

.split ul.feature-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  gap: 14px;
}

.split ul.feature-list li {
  display: flex;
  gap: 12px;
  color: var(--text-dim);
  font-size: 0.96rem;
}

.split ul.feature-list li::before {
  content: '';
  width: 6px; height: 6px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--cyan);
  flex-shrink: 0;
}

@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; }
  .split.reverse .split-media { order: -1; }
}

/* ---------------- LAB GALLERY TEASER ---------------- */

.lab-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 18px;
}

.lab-grid a {
  display: block;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--hairline);
  position: relative;
  aspect-ratio: 4/3;
  text-decoration: none;
}

.lab-grid img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}

.lab-grid a:hover img { transform: scale(1.06); }

.lab-grid .lab-cap {
  position: absolute;
  inset: auto 0 0 0;
  padding: 14px 16px;
  background: linear-gradient(to top, rgba(0,0,0,0.75), transparent);
  color: white;
  font-size: 0.82rem;
  font-family: var(--font-mono);
}

@media (max-width: 800px) {
  .lab-grid { grid-template-columns: 1fr 1fr; }
  .lab-grid a:first-child { grid-column: 1 / -1; }
}

/* ---------------- INDUSTRIES ---------------- */

.chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.chip {
  border: 1px solid var(--hairline-strong);
  padding: 12px 18px;
  border-radius: 100px;
  font-size: 0.9rem;
  color: var(--text-dim);
  background: var(--bg-card);
}

/* ---------------- IP / CREDIBILITY BAND ---------------- */

.ip-band {
  border: 1px solid var(--hairline-strong);
  background: radial-gradient(120% 140% at 0% 0%, rgba(155,123,255,0.14), transparent 60%), var(--bg-card);
  border-radius: var(--radius-l);
  padding: 44px;
}

.ip-band h3 { font-size: 1.4rem; margin-bottom: 12px; }
.ip-band p { color: var(--text-dim); max-width: 72ch; }

@media (max-width: 800px) {
  .ip-band { padding: 32px 26px; }
}

/* ---------------- CONTACT / FOOTER CTA ---------------- */

.cta-band {
  text-align: center;
  padding: 100px 0 70px;
}

.cta-band h2 {
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  max-width: 20ch;
  margin: 0 auto 20px;
}

.cta-band p {
  color: var(--text-dim);
  max-width: 46ch;
  margin: 0 auto 34px;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

footer.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 34px 0;
}

footer.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.85rem;
  color: var(--text-faint);
}

footer.site-footer a {
  color: var(--text-faint);
  text-decoration: none;
}
footer.site-footer a:hover { color: var(--cyan); }

.footer-links {
  display: flex;
  gap: 22px;
}

/* ---------------- MODAL ---------------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 6, 12, 0.72);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  padding: 20px;
}

.modal-overlay.show { display: flex; }

.modal-box {
  background: var(--bg-elevated);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-l);
  max-width: 640px;
  width: 100%;
  max-height: 82vh;
  overflow-y: auto;
  padding: 34px;
  position: relative;
}

.modal-box h3 { font-size: 1.35rem; margin-bottom: 18px; }
.modal-box p { color: var(--text-dim); margin-bottom: 14px; font-size: 0.96rem; }
.modal-box ul { margin: 0; padding-left: 20px; color: var(--text-dim); }
.modal-box ul li { margin-bottom: 8px; }

.modal-close {
  position: absolute;
  top: 18px; right: 22px;
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 1.4rem;
  cursor: pointer;
}
.modal-close:hover { color: var(--text); }

/* ---------------- VISUAL CAPTION ---------------- */

.visual-caption {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 18px;
  letter-spacing: 0.03em;
}

.kappa-caption {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  letter-spacing: 0.03em;
  margin-top: 30px;
}

.kappa-legend {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-top: 26px;
}

.kappa-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.kappa-item svg {
  width: 52px;
  height: 52px;
}

.kappa-item svg path {
  fill: none;
  stroke: var(--violet);
  stroke-width: 4;
  opacity: 0.85;
}

.kappa-item:nth-child(2) svg path { stroke: var(--cyan); }

.kappa-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  letter-spacing: 0.03em;
}

.impl-note {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-top: 20px;
  letter-spacing: 0.02em;
}

/* ---------------- SIGNAL CHAIN (central diagram) ---------------- */

.signal-chain {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px 8px;
  margin: 36px 0 44px;
  padding: 30px 24px;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-l);
  background: radial-gradient(120% 160% at 50% 0%, rgba(60,231,207,0.08), transparent 60%), var(--bg-card);
}

.chain-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  max-width: 190px;
}

.chain-node {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--hairline-strong);
  padding: 9px 16px;
  border-radius: 100px;
  white-space: nowrap;
}

.chain-sub {
  font-size: 0.78rem;
  color: var(--text-faint);
  line-height: 1.4;
}

.chain-arrow {
  color: var(--cyan);
  font-size: 1rem;
  flex: 0 0 auto;
  align-self: center;
}

@media (max-width: 820px) {
  .signal-chain { flex-direction: column; }
  .chain-stage { max-width: none; }
  .chain-arrow { transform: rotate(90deg); }
}

/* ---------------- PITCH NOTE (experiments) ---------------- */

.pitch-note {
  max-width: 76ch;
  margin: 40px 0 22px;
}

.pitch-note h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.pitch-note p {
  color: var(--text-dim);
  font-size: 0.94rem;
}

/* ---------------- PIPELINE ---------------- */

.pipeline {
  display: flex;
  align-items: stretch;
  gap: 4px;
  flex-wrap: wrap;
}

.pipeline-step {
  flex: 1 1 170px;
  background: var(--bg-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-m);
  padding: 24px 20px;
}

.pipeline-step h3 {
  font-size: 1.02rem;
  margin-bottom: 8px;
}

.pipeline-step p {
  color: var(--text-dim);
  font-size: 0.88rem;
}

.pipeline-num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--violet);
  display: block;
  margin-bottom: 12px;
}

.pipeline-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-faint);
  font-size: 1.3rem;
  padding: 0 4px;
  flex: 0 0 auto;
}

.note-block {
  margin-top: 34px;
  color: var(--text-dim);
  font-size: 0.94rem;
  max-width: 76ch;
  padding: 20px 24px;
  border-left: 2px solid var(--violet-dim);
  background: var(--bg-card);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
}

@media (max-width: 900px) {
  .pipeline { flex-direction: column; }
  .pipeline-arrow { transform: rotate(90deg); padding: 6px 0; }
}

/* ---------------- SCHEMATIC DIAGRAM ---------------- */

.schematic {
  background: var(--bg-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-l);
  padding: 30px 20px 14px;
  overflow-x: auto;
}

.schematic-svg {
  width: 100%;
  min-width: 640px;
  height: auto;
  display: block;
}

.sch-beam {
  stroke: var(--cyan);
  stroke-width: 1.4;
  stroke-dasharray: 5 6;
  opacity: 0.55;
}

.sch-beam-thin {
  stroke: var(--cyan);
  stroke-width: 1.2;
  opacity: 0.5;
  fill: none;
}

.sch-node {
  fill: var(--bg-elevated);
  stroke: var(--text-dim);
  stroke-width: 1.3;
}

.sch-node-o {
  fill: none;
  stroke: var(--text-dim);
  stroke-width: 1.3;
}

.sch-mirror {
  stroke: var(--violet);
  stroke-width: 2.4;
}

.sch-roi {
  fill: none;
  stroke: var(--amber);
  stroke-width: 1.2;
}

.sch-dot {
  fill: var(--cyan);
}

.sch-spiral {
  fill: none;
  stroke: var(--violet);
  stroke-width: 3;
}

.sch-label {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--text-faint);
  letter-spacing: 0.04em;
}

/* ---------------- FRAME PLACEHOLDER CARDS ---------------- */

.frame-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 22px;
}

.frame-card {
  border: 1px dashed var(--hairline-strong);
  border-radius: var(--radius-m);
  aspect-ratio: 4/3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--text-faint);
  background: var(--bg-card);
}

.frame-card svg { width: 36px; height: 36px; opacity: 0.6; }

.frame-card .frame-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
}

@media (max-width: 700px) {
  .frame-grid { grid-template-columns: 1fr; }
}

/* ---------------- REAL STATE CARDS (CCW / Centre / CW) ---------------- */

.state-card {
  margin: 0;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: #050505;
}

.state-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}

.state-card figcaption {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  border-top: 1px solid var(--hairline);
}

.disclaimer {
  margin-top: 22px;
  font-size: 0.82rem;
  color: var(--text-faint);
  max-width: 70ch;
}

.tech-link {
  margin-top: 30px;
}

.tech-link a {
  color: var(--cyan);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.96rem;
}

.tech-link a:hover { text-decoration: underline; }

.demo-line {
  margin-top: 22px;
  color: var(--text-dim);
  font-size: 0.94rem;
  max-width: 76ch;
}

.repeat-block {
  margin-top: 70px;
  padding-top: 60px;
  border-top: 1px solid var(--hairline);
}

.composite-frame {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: #050505;
}

.composite-frame img {
  width: 100%;
  display: block;
}

.composite-caption {
  margin-top: 16px;
  color: var(--text-dim);
  font-size: 0.9rem;
  max-width: 76ch;
}

/* ---------------- OTHER RESEARCH (demoted card) ---------------- */

.other-research { margin-top: 40px; }

.other-research-card {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-m);
  padding: 20px;
}

.other-research-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-s);
}

.other-research-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.other-research-card p {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-bottom: 14px;
}

@media (max-width: 600px) {
  .other-research-card { grid-template-columns: 1fr; }
}

/* ---------------- GENERIC PAGE HEADER (sub-pages) ---------------- */

.page-head {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--hairline);
}

.page-head h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  margin-top: 14px;
}

.page-head p {
  color: var(--text-dim);
  margin-top: 14px;
  max-width: 56ch;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  margin-top: 30px;
}
.back-link:hover { color: var(--cyan); }

/* ---------------- OPENING BRAND INTRO ---------------- */

body.intro-active {
  overflow: hidden;
}

.site-intro {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  background: #000;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.65s ease, visibility 0.65s ease;
}

.site-intro.is-leaving {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.site-intro-video {
  width: min(100vw, 1100px);
  height: 100vh;
  object-fit: contain;
  background: #000;
}

.site-intro-controls {
  position: absolute;
  top: max(20px, env(safe-area-inset-top));
  right: max(20px, env(safe-area-inset-right));
  display: flex;
  gap: 10px;
}

.intro-control {
  border: 1px solid rgba(255,255,255,0.28);
  border-radius: 999px;
  padding: 9px 14px;
  background: rgba(8,11,20,0.48);
  color: #fff;
  font: 500 0.82rem var(--font-body);
  backdrop-filter: blur(10px);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.intro-control:hover,
.intro-control:focus-visible {
  background: rgba(8,11,20,0.78);
  border-color: rgba(255,255,255,0.6);
  outline: none;
}

@media (max-width: 600px) {
  .site-intro-video {
    width: 100vw;
    height: 100dvh;
  }

  .site-intro-controls {
    top: max(14px, env(safe-area-inset-top));
    right: max(14px, env(safe-area-inset-right));
  }

  .intro-control {
    padding: 8px 12px;
    font-size: 0.78rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-intro {
    display: none;
  }
}

/* ============================================================
   PROFESSIONAL HOMEPAGE REFINEMENTS — Aug 2026
   Adds clearer company positioning, proof hierarchy and
   partnership paths while preserving the original visual system.
   ============================================================ */

.hero {
  padding-top: 92px;
  padding-bottom: 78px;
}

.hero h1 {
  max-width: 12ch;
  font-size: clamp(2.7rem, 5.2vw, 4.55rem);
  letter-spacing: -0.035em;
}

.hero-sub {
  max-width: 59ch;
  line-height: 1.72;
}

.credibility-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  padding-top: 22px;
  border-top: 1px solid var(--hairline);
  color: var(--text-faint);
  font-size: 0.82rem;
}

.credibility-strip span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.credibility-strip span::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(60,231,207,.6);
}

.credibility-strip strong {
  color: var(--text-dim);
  font-weight: 600;
}

.value-section {
  background: linear-gradient(180deg, rgba(15,21,38,.52), rgba(8,11,20,0));
}

.wide-head {
  max-width: 780px;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: rgba(15,21,38,.62);
}

.value-card {
  padding: 34px 30px 36px;
  min-height: 230px;
}

.value-card + .value-card {
  border-left: 1px solid var(--hairline);
}

.value-index {
  display: block;
  margin-bottom: 42px;
  font: 500 .74rem var(--font-mono);
  letter-spacing: .12em;
  color: var(--cyan);
}

.value-card h3 {
  font-size: 1.24rem;
  margin-bottom: 12px;
}

.value-card p {
  color: var(--text-dim);
  font-size: .94rem;
}

.proof-section {
  background:
    radial-gradient(80% 50% at 85% 20%, rgba(60,231,207,.035), transparent 70%);
}

.proof-section .mode-card h3 {
  font-size: 2rem;
  font-family: var(--font-mono);
  color: var(--text);
}

.proof-section .mode-card .mode-l {
  color: var(--cyan);
}

.company-section {
  background:
    radial-gradient(70% 110% at 0% 40%, rgba(155,123,255,.10), transparent 70%),
    var(--bg-elevated);
}

.company-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 90px;
  align-items: start;
}

.company-grid h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.8rem);
  line-height: 1.15;
  margin-top: 15px;
  max-width: 12ch;
}

.company-copy {
  display: grid;
  gap: 18px;
  color: var(--text-dim);
  font-size: 1.02rem;
}

.company-principles {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.company-principles span {
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  padding: 9px 13px;
  background: rgba(19,27,49,.66);
  color: var(--text-dim);
  font-size: .82rem;
}

/* ---------------- PEOPLE ---------------- */

.people-section {
  background: linear-gradient(180deg, var(--bg), rgba(15,21,38,.88));
}

.people-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 38px;
}

.person-card {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 20px;
  align-items: start;
  padding: 30px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-m);
  background: var(--bg-card);
}

.person-monogram {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  border: 1px solid rgba(60,231,207,.28);
  background: rgba(60,231,207,.07);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: .86rem;
  letter-spacing: .08em;
}

.person-role {
  display: block;
  margin-bottom: 8px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: .72rem;
  line-height: 1.5;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.person-card h3 {
  margin: 0 0 12px;
  color: var(--text);
  font-size: 1.35rem;
}

.person-card p {
  margin: 0;
  color: var(--text-dim);
  line-height: 1.72;
}

.contact-paths {
  max-width: 900px;
  margin: 38px auto 30px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  text-align: left;
}

.contact-path {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 128px;
  padding: 24px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-m);
  background: var(--bg-card);
  text-decoration: none;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.contact-path:hover {
  transform: translateY(-3px);
  border-color: rgba(60,231,207,.55);
  background: var(--bg-card-hover);
}

.contact-path strong {
  font-family: var(--font-display);
  color: var(--text);
}

.contact-path span {
  color: var(--text-faint);
  font-size: .83rem;
}

.cta-band {
  padding-top: 110px;
}

.cta-band h2 {
  max-width: 18ch;
}

@media (max-width: 900px) {
  .value-grid { grid-template-columns: 1fr; }
  .value-card { min-height: auto; }
  .value-card + .value-card {
    border-left: none;
    border-top: 1px solid var(--hairline);
  }
  .value-index { margin-bottom: 22px; }
  .company-grid { grid-template-columns: 1fr; gap: 30px; }
  .company-grid h2 { max-width: 18ch; }
  .people-grid { grid-template-columns: 1fr; }
  .contact-paths { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .hero { padding-top: 62px; }
  .hero h1 { max-width: 11ch; }
  .credibility-strip { flex-direction: column; gap: 10px; }
  .value-card { padding: 28px 24px 30px; }
  .company-copy { font-size: .96rem; }
  .person-card { grid-template-columns: 1fr; padding: 24px; }
}

@media (max-width: 620px) {
  .brand .tag { display: none; }
  .brand { font-size: .96rem; }
  .brand img { height: 29px; width: 29px; }
}