/* ===================================================================
   Skromatic base
   =================================================================== */

@font-face {
  font-family: "InterDisplay";
  src: url("../assets/fonts/InterDisplay-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "InterDisplay";
  src: url("../assets/fonts/InterDisplay-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "InterDisplay";
  src: url("../assets/fonts/InterDisplay-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "InterDisplay";
  src: url("../assets/fonts/InterDisplay-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "InterDisplay";
  src: url("../assets/fonts/InterDisplay-ExtraBold.woff2") format("woff2");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "InterDisplay";
  src: url("../assets/fonts/InterDisplay-Black.woff2") format("woff2");
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../assets/fonts/InterVariable.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #0a0a0a;
  --ink-soft: #3a3a3c;
  --grey-700: #5b5b5e;
  --grey-500: #8a8a8e;
  --grey-300: #d4d4d7;
  --grey-200: #e7e7ea;
  --grey-100: #f2f2f4;
  --paper: #fbfbfa;
  --white: #ffffff;
  --silver-a: #c8c9cd;
  --silver-b: #eceef1;
  --line: rgba(10, 10, 10, 0.09);
  --line-soft: rgba(10, 10, 10, 0.06);
  --shadow-card: 0 1px 2px rgba(10, 10, 10, 0.04), 0 12px 32px -16px rgba(10, 10, 10, 0.14);
  --shadow-lift: 0 20px 60px -20px rgba(10, 10, 10, 0.28);
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
@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; scroll-behavior: auto !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}
.wrap-wide {
  max-width: 1760px;
  padding: 0 48px;
}
@media (max-width: 780px) {
  .wrap-wide { padding: 0 20px; }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "SFMono-Regular", ui-monospace, Menlo, monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grey-500);
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink);
}

h1, h2, h3, h4 {
  font-family: "InterDisplay", "Inter", sans-serif;
  font-weight: 500;
  letter-spacing: -0.03em;
  margin: 0;
  color: var(--ink);
}

.section-head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.12;
  margin-top: 14px;
}
.section-head p {
  margin: 16px 0 0;
  color: var(--grey-700);
  font-size: 16.5px;
}

section { position: relative; }

.muted { color: var(--grey-700); }
.dim { color: var(--grey-500); }

/* ---------- ambient moving background ---------- */
.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.ambient span {
  position: absolute;
  border-radius: 50%;
  filter: blur(64px);
  opacity: 0.55;
  will-change: transform;
}
.ambient .b1 {
  width: 46vw; height: 46vw;
  top: -14vw; left: -10vw;
  background: radial-gradient(circle at 30% 30%, var(--silver-b), transparent 70%);
  animation: drift1 34s var(--ease) infinite alternate;
}
.ambient .b2 {
  width: 38vw; height: 38vw;
  top: 8vw; right: -14vw;
  background: radial-gradient(circle at 60% 40%, var(--grey-200), transparent 70%);
  animation: drift2 40s var(--ease) infinite alternate;
}
.ambient .b3 {
  width: 42vw; height: 42vw;
  bottom: -18vw; left: 18vw;
  background: radial-gradient(circle at 50% 50%, var(--silver-a), transparent 72%);
  opacity: 0.35;
  animation: drift3 46s var(--ease) infinite alternate;
}
@keyframes drift1 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(6vw, 8vw) scale(1.12); }
}
@keyframes drift2 {
  from { transform: translate(0, 0) scale(1.05); }
  to   { transform: translate(-7vw, 6vw) scale(0.95); }
}
@keyframes drift3 {
  from { transform: translate(0, 0) rotate(0deg); }
  to   { transform: translate(4vw, -6vw) rotate(20deg); }
}
.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

main, header, footer { position: relative; z-index: 2; }

/* ---------- corner frame (skale-style device readout) ---------- */
.corner-frame {
  position: absolute;
  top: 22px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 28px;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--grey-500);
  z-index: 3;
  pointer-events: none;
}
.corner-frame span { display: inline-block; }

.frame-lines {
  position: fixed;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--line-soft);
  z-index: 1;
  pointer-events: none;
}
.frame-lines.left { left: 9%; }
.frame-lines.right { right: 9%; }
@media (max-width: 1300px) {
  .frame-lines { display: none; }
}

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(251, 251, 250, 0.72);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.nav.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 1px 0 rgba(10,10,10,0.02);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
}
.brand img { width: 22px; height: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 14.5px;
  color: var(--ink-soft);
}
.nav-links a { position: relative; padding: 4px 0; transition: color 0.2s; }
.nav-links a:hover { color: var(--ink); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--ink);
  transition: right 0.25s var(--ease);
}
.nav-links a:hover::after { right: 0; }

.nav-cta { display: flex; align-items: center; gap: 14px; }

.menu-btn {
  display: none;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--white);
  align-items: center;
  justify-content: center;
}
.menu-btn span, .menu-btn span::before, .menu-btn span::after {
  content: "";
  display: block;
  width: 15px; height: 1.4px;
  background: var(--ink);
  position: relative;
  transition: transform 0.25s var(--ease), opacity 0.2s;
}
.menu-btn span::before { position: absolute; top: -5px; }
.menu-btn span::after { position: absolute; top: 5px; }
.menu-btn.is-open span { background: transparent; }
.menu-btn.is-open span::before { transform: translateY(5px) rotate(45deg); }
.menu-btn.is-open span::after { transform: translateY(-5px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .menu-btn { display: flex; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.25s, color 0.25s, border-color 0.25s;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--ink);
  color: var(--white);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lift); }
.btn-ghost {
  background: var(--grey-100);
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { background: var(--white); border-color: var(--ink); transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-outline:hover { border-color: var(--ink); transform: translateY(-2px); }
.btn-sm { height: 40px; padding: 0 18px; font-size: 13.5px; }
.btn-wide { width: 100%; }

/* ---------- hero ---------- */
.hero {
  padding: 200px 0 108px;
  text-align: center;
  position: relative;
}
.hero > .wrap, .hero > .trust { position: relative; z-index: 1; }

.hero h1 {
  font-family: "InterDisplay", sans-serif;
  font-weight: 500;
  font-size: clamp(38px, 6.4vw, 76px);
  line-height: 1.08;
  letter-spacing: -0.04em;
  max-width: 900px;
  margin: 0 auto;
}
.hero h1 .fade { color: var(--grey-300); }
.hero p.lede {
  max-width: 580px;
  margin: 30px auto 0;
  font-size: 19px;
  line-height: 1.55;
  color: var(--grey-700);
}
.hero-ctas {
  margin-top: 42px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.trust {
  margin-top: 108px;
}
.trust p {
  text-align: center;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-500);
  margin-bottom: 30px;
}

/* logo marquee */
.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track {
  display: flex;
  align-items: center;
  width: max-content;
  gap: 72px;
  animation: scroll-x 32s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes scroll-x {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.marquee-track img {
  height: 22px;
  width: auto;
  filter: grayscale(1) contrast(0.7) brightness(0.4);
  opacity: 0.55;
  transition: opacity 0.3s, filter 0.3s;
}
.marquee-track img:hover { filter: none; opacity: 1; }

/* ---------- reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.stagger.is-visible > * { transition-delay: calc(var(--i, 0) * 70ms); }

/* ---------- work / portfolio ---------- */
.work { padding: 130px 0; }
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 28px;
}
@media (max-width: 780px) { .work-grid { grid-template-columns: 1fr; gap: 36px; } }

.card {
  cursor: pointer;
}
.card-frame {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--grey-100);
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.card:hover .card-frame { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.card video, .card .poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card-caption {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
}
.card-caption h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}
.card-caption .tag {
  font-size: 12.5px;
  color: var(--grey-500);
  white-space: nowrap;
}

/* ---------- clients ---------- */
.clients { padding: 130px 0; }
.client-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
@media (max-width: 860px) { .client-grid { grid-template-columns: repeat(2, 1fr); } }
.client-cell {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  aspect-ratio: 16/10;
  display: flex; align-items: center; justify-content: center;
  padding: 30px;
  transition: background 0.3s;
}
.client-cell:hover { background: var(--grey-100); }
.client-cell img {
  max-width: 100%;
  max-height: 46px;
  filter: grayscale(1) contrast(0.85);
  opacity: 0.75;
  transition: filter 0.3s, opacity 0.3s, transform 0.3s var(--ease);
}
.client-cell:hover img { filter: none; opacity: 1; transform: scale(1.04); }

/* ---------- about ---------- */
.about {
  background: var(--ink);
  padding: 130px 0;
}
.about-inner {
  display: grid;
  grid-template-columns: minmax(260px, 400px) 1fr;
  gap: 72px;
  align-items: center;
}
.about-photo {
  border-radius: 24px;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  background: rgba(255, 255, 255, 0.04);
}
.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.about-eyebrow { color: rgba(255, 255, 255, 0.45); margin-bottom: 18px; }
.about-eyebrow::before { background: var(--white); }
.about-content h2 {
  color: var(--white);
  font-size: clamp(30px, 3.6vw, 44px);
  margin-bottom: 26px;
}
.about-content p {
  color: rgba(255, 255, 255, 0.68);
  font-size: 16px;
  line-height: 1.7;
  max-width: 540px;
  margin: 0 0 20px;
}
.about-signoff { margin-top: 8px; }
.about-name {
  display: block;
  font-family: "InterDisplay", sans-serif;
  font-weight: 600;
  font-size: 16px;
  color: var(--white);
  letter-spacing: -0.01em;
}
.about-title {
  display: block;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-top: 6px;
}
.about-connect {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 34px;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}
.about-connect-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.5);
}
.about-connect a {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.25s, border-color 0.25s, transform 0.3s var(--ease);
}
.about-connect a:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.32);
  transform: translateY(-2px);
}
.about-connect a svg { width: 15px; height: 15px; fill: rgba(255, 255, 255, 0.85); }

@media (max-width: 860px) {
  .about-inner { grid-template-columns: 1fr; gap: 40px; }
  .about-photo { max-width: 340px; margin: 0 auto; }
  .about-content { text-align: left; }
  .about-content p { max-width: none; }
}

/* ---------- process ---------- */
.path { padding: 130px 0; }

.path-track {
  position: relative;
  height: 2px;
  background: var(--grey-200);
  margin: 0 5px 40px;
}
.path-track-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: var(--ink);
}
.path-track-dot {
  position: absolute;
  top: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--paper);
  border: 1.5px solid var(--grey-300);
  transform: translate(-50%, -50%);
  z-index: 2;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.path-track-dot.is-active {
  background: var(--ink);
  border-color: var(--ink);
  transform: translate(-50%, -50%) scale(1.2);
}
.path-track-marker {
  position: absolute;
  top: -13px;
  left: 0%;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 7px solid var(--ink);
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}
.path-track.is-active .path-track-marker { opacity: 1; }
@media (max-width: 780px) { .path-track { display: none; } }

.path-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px 22px;
}
@media (max-width: 980px) { .path-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 780px) { .path-grid { grid-template-columns: 1fr; gap: 36px; } }

.path-eyebrow {
  font-family: ui-monospace, Menlo, monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-500);
  margin-bottom: 10px;
  transition: color 0.3s var(--ease);
}
.path-eyebrow.is-filled { color: var(--ink); }
@media (max-width: 780px) {
  .path-eyebrow::before {
    content: "";
    display: inline-block;
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--ink);
    margin-right: 8px;
    vertical-align: middle;
  }
}
.path-col h3 { font-size: 18.5px; margin-bottom: 10px; letter-spacing: -0.02em; }
.path-col p { font-size: 14.5px; line-height: 1.55; color: var(--grey-700); margin: 0; }

/* ---------- FAQ ---------- */
.faq { padding: 130px 0; }
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 4px;
  text-align: left;
  font-family: "InterDisplay", sans-serif;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}
.faq-plus {
  position: relative;
  width: 20px; height: 20px;
  flex-shrink: 0;
}
.faq-plus::before, .faq-plus::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  background: var(--ink);
  transform: translate(-50%, -50%);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}
.faq-plus::before { width: 14px; height: 1.4px; }
.faq-plus::after { width: 1.4px; height: 14px; }
.faq-item.is-open .faq-plus::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease);
}
.faq-a p { margin: 0 4px 24px; color: var(--grey-700); font-size: 15px; max-width: 620px; line-height: 1.6; }

/* ---------- book a call ---------- */
.book { padding: 130px 0 150px; }
.book-inner {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}
.book-frame {
  margin-top: 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.book-frame iframe {
  width: 100%;
  height: 720px;
  border: none;
  display: block;
}
.book-fallback {
  padding: 16px 18px;
  text-align: center;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--grey-500);
}
.book-fallback a { color: var(--ink-soft); text-decoration: underline; text-underline-offset: 2px; }

/* ---------- footer (dark) ---------- */
footer {
  background: var(--ink);
  padding: 90px 0 32px;
  margin-top: 40px;
}
footer .wrap { max-width: 1400px; }
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 64px;
}
.footer-brand-block { max-width: 620px; }
.footer-mark { display: inline-block; margin-bottom: 28px; }
.footer-mark img { width: 56px; height: auto; display: block; }
.footer-tagline {
  font-family: "InterDisplay", sans-serif;
  font-weight: 500;
  letter-spacing: -0.03em;
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.18;
  color: var(--white);
}
.footer-cols {
  display: flex;
  gap: 100px;
  flex-wrap: wrap;
  flex-shrink: 0;
}
.footer-col h4 {
  font-family: ui-monospace, Menlo, monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 18px;
  font-weight: 500;
}
.footer-col a {
  display: block;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 13px;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-family: ui-monospace, Menlo, monospace;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-top-link { color: rgba(255, 255, 255, 0.6); transition: color 0.2s; }
.footer-top-link:hover { color: var(--white); }

/* ---------- lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4vh 4vw;
  background: rgba(10, 10, 10, 0.86);
  backdrop-filter: blur(10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease);
}
.lightbox.is-open { opacity: 1; pointer-events: auto; }
.lightbox-inner {
  position: relative;
  max-width: 920px;
  width: 100%;
  transform: scale(0.96);
  transition: transform 0.35s var(--ease);
}
.lightbox.is-open .lightbox-inner { transform: scale(1); }
.lightbox video {
  width: 100%;
  max-height: 84vh;
  border-radius: var(--radius-md);
  background: #000;
}
.lightbox-close {
  position: absolute;
  top: -50px;
  right: 0;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.3);
  display: flex; align-items: center; justify-content: center;
}
.lightbox-close svg { width: 15px; height: 15px; stroke: var(--white); }
.lightbox-title {
  position: absolute;
  bottom: -42px;
  left: 0;
  color: rgba(255,255,255,0.75);
  font-size: 14px;
}

/* ---------- mobile nav drawer ---------- */
.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 39;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  padding: 100px 28px 40px;
  transform: translateY(-100%);
  transition: transform 0.4s var(--ease);
}
.mobile-drawer.is-open { transform: translateY(0); }
.mobile-drawer a {
  font-family: "InterDisplay", sans-serif;
  font-size: 28px;
  font-weight: 600;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.mobile-drawer .btn { margin-top: 30px; }

@media (max-width: 640px) {
  .book-frame iframe { height: 620px; }
  .footer-cols { gap: 48px; }
}