:root {
  --bg: #ffffff;
  --bg-soft: #f7f7f8;
  --bg-softer: #f1f1f3;
  --border: #ececf1;
  --border-strong: #e3e3e8;
  --text: #0d0d0d;
  --muted: #6e6e80;
  --faint: #a4a4b2;
  --dark: #0d0d0d;
  --radius-lg: 28px;
  --radius: 20px;
  --radius-sm: 14px;
  --shadow-hover: 0 1px 2px rgba(0, 0, 0, .04), 0 12px 32px rgba(0, 0, 0, .07);
  --container: 1160px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { margin: 0; }

.muted { color: var(--muted); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}
.topbar.is-scrolled { border-bottom-color: var(--border); }
.topbar__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: 16px; letter-spacing: -.01em; }
.brand__mark {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--dark);
  box-shadow: inset 0 0 0 7px var(--dark), inset 0 0 0 9px #fff;
}

/* Buttons & chips */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 18px;
  border-radius: 999px;
  font-size: 14px; font-weight: 500;
  border: 1px solid var(--border-strong);
  background: var(--bg);
  transition: background .15s ease, border-color .15s ease, transform .15s ease;
  cursor: pointer;
}
.btn:hover { background: var(--bg-soft); }
.btn--dark { background: var(--dark); color: #fff; border-color: var(--dark); }
.btn--dark:hover { background: #2a2a2a; }

.chip {
  display: inline-flex; align-items: center;
  height: 28px; padding: 0 12px;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  font-size: 13px; color: var(--muted); font-weight: 500;
  white-space: nowrap;
}
.chips { display: flex; flex-wrap: wrap; gap: 6px; }

/* Hero */
.hero { padding-block: 96px 72px; text-align: center; }
.hero__badge { margin-bottom: 24px; }
.hero__title {
  font-size: clamp(36px, 5.6vw, 60px);
  line-height: 1.06;
  font-weight: 600;
  letter-spacing: -.035em;
  max-width: 860px;
  margin: 0 auto;
  text-wrap: balance;
}
.hero__sub {
  margin: 20px auto 0;
  max-width: 600px;
  font-size: 18px;
  color: var(--muted);
  text-wrap: pretty;
}

/* Section */
.section { padding-block: 24px 88px; }
.section__head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 24px; gap: 16px;
}
.section__title { font-size: 28px; font-weight: 600; letter-spacing: -.025em; }
.section__count { font-size: 15px; color: var(--muted); }

/* Case grid */
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
@media (max-width: 980px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } }

.card {
  display: flex; flex-direction: column;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 8px;
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: var(--border-strong); }
.card:focus-visible { outline: 2px solid var(--dark); outline-offset: 3px; }

.card__media {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-soft);
}
.card__media img, .card__media video { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.card:hover .card__media img, .card:hover .card__media video { transform: scale(1.03); }

.card__body { padding: 16px 14px 14px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card__meta { font-size: 13px; color: var(--muted); font-weight: 500; }
.card__title { font-size: 19px; font-weight: 600; letter-spacing: -.015em; line-height: 1.3; }
.card__text {
  font-size: 15px; color: var(--muted);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card__foot {
  margin-top: auto; padding-top: 10px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.card__arrow {
  flex: none;
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--bg-soft);
  transition: background .2s ease, color .2s ease;
}
.card:hover .card__arrow { background: var(--dark); color: #fff; }

/* Photo placeholder */
.ph {
  width: 100%; height: 100%;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  background:
    radial-gradient(circle at 1px 1px, #e4e4ea 1px, transparent 0) 0 0 / 18px 18px,
    var(--bg-soft);
  color: var(--faint);
  font-size: 13px; font-weight: 500;
}
.ph svg { width: 34px; height: 34px; }

/* Services */
.services {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
@media (max-width: 980px) { .services { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .services { grid-template-columns: 1fr; } }
.service {
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: 22px 22px 24px;
  display: flex; flex-direction: column; gap: 8px;
}
.service__num { font-size: 13px; color: var(--faint); font-weight: 600; margin-bottom: 18px; }
.service__title { font-size: 17px; font-weight: 600; letter-spacing: -.01em; }
.service__text { font-size: 15px; color: var(--muted); }

/* Case page */
.case { padding-block: 40px 96px; }
.case__wrap { max-width: 920px; margin: 0 auto; }
.case__back { margin-bottom: 40px; }
.case__meta { margin-bottom: 18px; }
.case__title {
  font-size: clamp(32px, 4.6vw, 48px);
  line-height: 1.1; font-weight: 600; letter-spacing: -.03em;
  text-wrap: balance;
}
.case__lead { margin-top: 16px; font-size: 19px; color: var(--muted); max-width: 720px; text-wrap: pretty; }
.case__link { margin-top: 24px; }

/* Case viewer */
.viewer { margin: 40px 0 56px; }
.viewer__stage {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  isolation: isolate;
}
.viewer__slot { position: absolute; inset: 0; }
.viewer__slot.is-switching .viewer__media { animation: viewer-in .3s ease both; }
@keyframes viewer-in { from { transform: scale(.985); opacity: .4; } to { transform: none; opacity: 1; } }
.viewer__bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  filter: blur(40px) saturate(1.15);
  transform: scale(1.25);
  opacity: .55;
}
.viewer__media {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: contain;
}
.viewer__nav {
  position: absolute; top: 50%; z-index: 2;
  transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, .08);
  color: var(--text);
  cursor: pointer;
  opacity: 0;
  transition: opacity .2s ease, background .15s ease;
}
.viewer__nav--prev { left: 16px; }
.viewer__nav--next { right: 16px; }
.viewer__stage:hover .viewer__nav, .viewer__nav:focus-visible { opacity: 1; }
.viewer__nav:hover { background: #fff; }
@media (hover: none) { .viewer__nav { opacity: 1; width: 38px; height: 38px; } }
.viewer__pill {
  position: absolute; bottom: 14px; z-index: 2;
  height: 30px; padding: 0 12px;
  display: inline-flex; align-items: center;
  border-radius: 999px;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  font-size: 13px; font-weight: 500;
  max-width: calc(100% - 110px);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.viewer__pill[hidden] { display: none; }
.viewer__caption { left: 14px; }
.viewer__count { right: 14px; color: var(--muted); font-variant-numeric: tabular-nums; }

.viewer__thumbs {
  display: flex; gap: 10px;
  margin-top: 12px;
  padding: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.viewer__thumbs::-webkit-scrollbar { display: none; }
.viewer__thumb {
  position: relative;
  flex: none;
  width: 132px; aspect-ratio: 16 / 10;
  padding: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  cursor: pointer;
  opacity: .55;
  transition: opacity .2s ease, outline-color .2s ease;
  outline: 2px solid transparent;
  outline-offset: 2px;
}
.viewer__thumb:hover { opacity: .85; }
.viewer__thumb.is-active { opacity: 1; outline-color: var(--dark); }
.viewer__thumb img, .viewer__thumb video { display: block; width: 100%; height: 100%; object-fit: cover; }
.viewer__thumb .ph span { display: none; }
.viewer__thumb .ph svg { width: 22px; height: 22px; }
.viewer__play {
  position: absolute; left: 8px; bottom: 8px;
  width: 24px; height: 24px; border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(255, 255, 255, .92);
  color: var(--text);
}
@media (max-width: 640px) {
  .viewer__stage { aspect-ratio: 4 / 3; border-radius: var(--radius); }
  .viewer__thumb { width: 96px; }
}

.case__layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}
@media (max-width: 800px) { .case__layout { grid-template-columns: 1fr; gap: 32px; } }

.facts {
  position: sticky; top: 88px;
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: 8px 20px;
}
@media (max-width: 800px) { .facts { position: static; } }
.fact { padding: 14px 0; border-bottom: 1px solid var(--border-strong); }
.fact:last-child { border-bottom: 0; }
.fact__label { font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.fact__value { font-size: 15px; font-weight: 500; }
.fact .chips { margin-top: 4px; }
.fact .chip { background: var(--bg); }

.block + .block { margin-top: 44px; }
.block__title { font-size: 22px; font-weight: 600; letter-spacing: -.02em; margin-bottom: 14px; }
.block p { font-size: 17px; color: #353740; }
.block p + .metrics { margin-top: 18px; }

.bullets { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.bullets li { position: relative; padding-left: 22px; font-size: 17px; color: #353740; }
.bullets li::before {
  content: ""; position: absolute; left: 4px; top: .7em;
  width: 6px; height: 6px; border-radius: 50%; background: var(--faint);
}

.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.steps li {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 16px;
}
.steps__title { font-weight: 600; letter-spacing: -.01em; }
.steps__text { margin-top: 4px; font-size: 15px; color: var(--muted); }
.steps__n {
  flex: none;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--bg-soft);
  display: grid; place-items: center;
  font-size: 13px; font-weight: 600; color: var(--muted);
}

.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.metric { border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.metric__value { font-size: 34px; font-weight: 600; letter-spacing: -.03em; line-height: 1.1; }
.metric__label { margin-top: 6px; font-size: 14px; color: var(--muted); }

.flow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
@media (max-width: 560px) { .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.flow__step {
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 15px; font-weight: 500;
}
.flow__n { display: block; font-size: 12px; color: var(--faint); font-weight: 600; margin-bottom: 6px; }

.next {
  margin-top: 72px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 24px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-soft);
  transition: background .2s ease;
}
.next:hover { background: var(--bg-softer); }
.next__label { font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.next__title { font-size: 20px; font-weight: 600; letter-spacing: -.015em; }

/* Footer */
.footer { border-top: 1px solid var(--border); }
.footer__inner {
  max-width: var(--container); margin: 0 auto; padding: 28px 24px;
  display: flex; justify-content: space-between; gap: 16px;
  font-size: 14px; font-weight: 500;
}

/* View transition */
.view { animation: fade .35s ease both; }
@keyframes fade { from { transform: translateY(8px); } to { transform: none; } }

@media (max-width: 640px) {
  .hero { padding-block: 64px 48px; }
  .hero__sub { font-size: 17px; }
  .section { padding-bottom: 64px; }
  .case__back { margin-bottom: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}