:root {
  color-scheme: light;
  --ink: #111;
  --paper: #f7f7f7;
  --glass: rgba(250, 250, 250, 0.82);
  --line: rgba(15, 15, 15, 0.18);
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  background: #e9e9e9;
  color: var(--ink);
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: #e9e9e9; overflow-x: hidden; }
body.nav-open { overflow: hidden; }
button, a { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 10px 14px; color: #fff; background: #111; }
.skip-link:focus { top: 16px; }

.scroll-progress { position: fixed; z-index: 80; left: 0; right: 0; top: 0; height: 3px; pointer-events: none; }
.scroll-progress i { display: block; width: 100%; height: 100%; transform: scaleX(0); transform-origin: left; background: #3d7cff; }

.floating-header {
  position: fixed; z-index: 70; left: 0; right: 0; top: 0;
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; padding: 0 clamp(16px, 2.4vw, 42px);
  pointer-events: none; color: #111;
}
.floating-header a, .floating-header button { pointer-events: auto; }
.wordmark {
  color: inherit; text-decoration: none; font-weight: 650; letter-spacing: -.02em;
  padding: 8px 12px; border: 1px solid rgba(20,20,20,.16); border-radius: 99px;
  background: var(--glass); backdrop-filter: blur(14px);
}
.wordmark span { margin-left: 8px; font-size: 11px; font-weight: 450; opacity: .7; text-transform: uppercase; letter-spacing: .12em; }
.header-actions { display: flex; align-items: center; gap: 10px; }
.sound-button, .nav-button {
  display: flex; align-items: center; gap: 8px; border: 1px solid currentColor; border-radius: 99px;
  padding: 8px 12px; background: var(--glass); backdrop-filter: blur(14px); cursor: pointer; font-size: 11px; letter-spacing: .04em;
}
.sound-dot { width: 7px; height: 7px; border-radius: 50%; border: 1px solid currentColor; }
.sound-button[aria-pressed="true"] .sound-dot { background: currentColor; box-shadow: 0 0 0 3px rgba(255,255,255,.2); }
.nav-button i, .nav-button i::after { content: ""; display: block; width: 12px; height: 1px; background: currentColor; transition: transform .25s; }
.nav-button i::after { transform: translateY(4px); }
.nav-open .nav-button i { transform: translateY(2px) rotate(45deg); }
.nav-open .nav-button i::after { transform: rotate(-90deg); }

.project-nav {
  position: fixed; z-index: 95; top: 0; right: 0; width: min(520px, 92vw); height: 100svh;
  display: flex; flex-direction: column; padding: 26px clamp(22px, 4vw, 48px);
  background: #f4f4f1; transform: translateX(102%); transition: transform .45s cubic-bezier(.2,.75,.2,1);
  box-shadow: -30px 0 70px rgba(0,0,0,.14);
}
.nav-open .project-nav { transform: translateX(0); }
.nav-top { display: flex; justify-content: space-between; padding-bottom: 50px; text-transform: uppercase; font-size: 11px; letter-spacing: .14em; }
.nav-top button { border: 0; background: none; font-size: 30px; line-height: 1; cursor: pointer; }
.project-nav > a {
  display: grid; grid-template-columns: 58px 1fr; align-items: start; gap: 14px;
  padding: 20px 0; border-top: 1px solid var(--line); color: inherit; text-decoration: none;
  transition: padding-left .25s, color .25s;
}
.project-nav > a:hover, .project-nav > a:focus-visible { padding-left: 8px; color: #2f65e9; }
.project-nav b { font-size: 12px; font-weight: 500; }
.project-nav span { font-size: clamp(19px, 2.5vw, 28px); letter-spacing: -.03em; }
.project-nav small { display: block; margin-top: 5px; color: #777; font-size: 10px; text-transform: uppercase; letter-spacing: .12em; }
.nav-contact { margin-top: auto; display: flex; justify-content: space-between; gap: 20px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 11px; }
.nav-contact a { color: inherit; }
.nav-backdrop { position: fixed; z-index: 90; inset: 0; border: 0; background: rgba(0,0,0,.36); opacity: 0; pointer-events: none; transition: opacity .35s; }
.nav-open .nav-backdrop { opacity: 1; pointer-events: auto; }

.portfolio-stream { width: min(100%, 1920px); margin: 0 auto; background: #fff; box-shadow: 0 0 80px rgba(0,0,0,.08); }
.portfolio-block { position: relative; width: 100%; margin: 0; padding: 0; overflow: hidden; line-height: 0; background: #fff; }
.portfolio-block img, .portfolio-video { display: block; width: 100%; height: auto; margin: 0; padding: 0; border: 0; }
.portfolio-block:not(.is-visible) { opacity: 0; transform: translateY(18px); }
.portfolio-block.is-visible { opacity: 1; transform: none; transition: opacity .7s ease, transform .7s cubic-bezier(.2,.75,.2,1); }
.media-block { aspect-ratio: 16 / 9; background: #050a25; }
.media-block video { width: 100%; height: 100%; object-fit: cover; }

.video-play {
  position: absolute; right: clamp(12px, 2vw, 30px); bottom: clamp(12px, 2vw, 30px);
  width: 52px; height: 52px; border: 1px solid rgba(255,255,255,.65); border-radius: 50%;
  background: rgba(0,0,0,.28); color: #fff; backdrop-filter: blur(12px); cursor: pointer;
  opacity: 0; transform: scale(.9); transition: opacity .25s, transform .25s, background .25s;
}
.media-block:hover .video-play, .video-play:focus-visible, .video-play.is-paused,
.embedded-video:hover .video-play { opacity: 1; transform: scale(1); }
.video-play:hover { background: rgba(0,0,0,.55); }
.video-play span { font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.video-play.compact { right: 12px; bottom: 12px; width: 42px; height: 42px; }

.composite-block > img { position: relative; z-index: 1; }
.video-composite-block { aspect-ratio: 16 / 9; }
.video-composite-block > .composite-background {
  position: relative; z-index: 1; width: 100%; height: 100%; object-fit: cover;
}
.embedded-video {
  position: absolute; z-index: 2; left: var(--left); top: var(--top); width: var(--width); height: var(--height);
  overflow: hidden; line-height: 0; background: #061b55;
  border-radius: clamp(0px, 2.8125vw, var(--radius));
}
.embedded-video video { width: 100%; height: 100%; object-fit: cover; }
.composite-block.video-behind > img { z-index: 2; pointer-events: none; }
.composite-block.video-behind .embedded-video {
  z-index: 1;
  background: #000;
  box-shadow: 0 0 0 var(--radius) #000;
}
.video-composite-block .embedded-video { z-index: 2; }
.index-hotspot {
  position: absolute; z-index: 4; left: var(--left); top: var(--top); width: var(--width); height: var(--height);
  border: 1px solid transparent; background: rgba(255,255,255,0); transition: border-color .25s, background .25s, transform .25s;
}
.index-hotspot:hover, .index-hotspot:focus-visible { border-color: rgba(255,255,255,.8); background: rgba(255,255,255,.08); transform: translateY(-3px); outline: none; }

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

@media (max-width: 700px) {
  .floating-header { height: 58px; padding: 0 12px; }
  .wordmark span, .sound-button span:last-child { display: none; }
  .sound-button, .nav-button { padding: 7px 10px; }
  .project-nav { width: 94vw; }
  .project-nav > a { grid-template-columns: 40px 1fr; padding: 17px 0; }
  .nav-contact { flex-direction: column; }
  .video-play { width: 42px; height: 42px; opacity: .72; }
  .portfolio-stream { box-shadow: none; }
}