/* Platform operations — Bilibili scroll-driven CRT section */
.video-scene.xhs-mode {
  overflow-y: auto !important;
  overflow-x: hidden !important;
  scroll-snap-type: y proximity;
  scroll-behavior: smooth;
  overscroll-behavior-y: contain;
}

.video-scene.xhs-mode .xhs-scrapbook {
  position: relative !important;
  inset: auto !important;
  min-height: calc(100vh - 74px);
  margin-top: 74px;
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

.video-scene.xhs-mode > .scene-back {
  position: fixed;
  z-index: 95;
  color: #fff;
  mix-blend-mode: difference;
}

.bili-scroll-section {
  position: relative;
  height: 300vh;
  min-height: 1800px;
  background: #050506;
  color: #f1f0eb;
  scroll-snap-align: start;
  isolation: isolate;
}

.bili-scroll-section::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 42vh;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(to bottom, #f3f0e8 0%, #c8c5bf 17%, #444343 46%, rgba(5, 5, 6, 0) 100%);
}

.bili-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  min-height: 640px;
  overflow: hidden;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 50% 49%, rgba(255,255,255,.07), transparent 26%),
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px),
    #050506;
  background-size: auto, 42px 42px, 42px 42px, auto;
}

.bili-sticky::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .28;
  background: radial-gradient(circle at center, transparent 42%, rgba(0,0,0,.74) 100%);
}

.bili-heading {
  position: absolute;
  left: 4.2vw;
  top: 13vh;
  z-index: 8;
  width: min(34vw, 430px);
}

.bili-heading .eyebrow {
  margin: 0 0 13px;
  opacity: .62;
}

.bili-heading h2 {
  margin: 0;
  font-size: clamp(42px, 5.8vw, 84px);
  line-height: .88;
  letter-spacing: -.065em;
  font-weight: 500;
}

.bili-heading > p:last-child {
  width: min(340px, 90%);
  margin: 18px 0 0;
  font: 400 10px/1.7 "IBM Plex Mono", monospace;
  text-transform: uppercase;
  opacity: .64;
}

.bili-system-meta {
  position: absolute;
  right: 4.2vw;
  top: 14vh;
  z-index: 8;
  display: grid;
  justify-items: end;
  gap: 7px;
  font: 500 9px/1.3 "IBM Plex Mono", monospace;
  letter-spacing: .06em;
}

.bili-system-meta b { font-size: 12px; font-weight: 500; }
.bili-system-meta span { opacity: .48; }

.bili-tv-stage {
  position: relative;
  z-index: 5;
  width: min(72vw, 900px);
  height: 76vh;
  min-height: 520px;
  display: grid;
  place-items: center;
}

.bili-tv {
  --tv-scale: 1;
  position: relative;
  width: min(25vw, 355px);
  aspect-ratio: .86;
  transform: translateY(2vh) scale(var(--tv-scale));
  transition: transform .9s cubic-bezier(.22,1,.36,1), filter .5s ease;
  filter: drop-shadow(0 42px 48px rgba(0,0,0,.52));
}

.bili-tv-body {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 24px 24px 18px 18px;
  background:
    linear-gradient(112deg, rgba(255,255,255,.62), transparent 18%),
    linear-gradient(145deg, #cbc5b5 0%, #a9a391 44%, #d8d2c2 100%);
  box-shadow:
    inset 0 0 0 2px rgba(255,255,255,.15),
    inset -18px -22px 34px rgba(61,54,42,.22),
    inset 12px 12px 26px rgba(255,255,255,.24);
}

.bili-tv-body::after {
  content: "";
  position: absolute;
  left: 7%;
  right: 7%;
  bottom: -7%;
  height: 14%;
  z-index: -1;
  border-radius: 0 0 18px 18px;
  background: linear-gradient(#7e7a70, #4d4b46);
  box-shadow: 0 16px 28px rgba(0,0,0,.45);
}

.bili-screen-bezel {
  position: absolute;
  left: 8.2%;
  right: 8.2%;
  top: 8%;
  height: 57%;
  padding: 4.2%;
  border-radius: 21% / 15%;
  background: linear-gradient(145deg, #272725, #050506 62%, #343431);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.12),
    0 2px 0 rgba(255,255,255,.28);
}

.bili-screen {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 17% / 12%;
  background: #090a0c;
  transform: translateZ(0);
  box-shadow: inset 0 0 35px rgba(0,0,0,.8);
}

.bili-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  opacity: .17;
  background: repeating-linear-gradient(to bottom, rgba(255,255,255,.14) 0 1px, transparent 1px 4px);
  mix-blend-mode: soft-light;
}

.bili-screen::after {
  content: "";
  position: absolute;
  inset: -15%;
  z-index: 21;
  pointer-events: none;
  background: linear-gradient(118deg, rgba(255,255,255,.2), transparent 26%, transparent 68%, rgba(255,255,255,.06));
  transform: translateX(-24%);
}

.bili-signal {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity .38s ease, transform .8s cubic-bezier(.22,1,.36,1);
}

.bili-signal.is-active {
  opacity: 1;
  transform: scale(1);
}

.bili-signal video,
.bili-signal img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bili-signal img {
  filter: saturate(.72) contrast(1.08) brightness(.82);
  animation: biliFallbackDrift 9s ease-in-out infinite alternate;
}

.bili-signal.is-video-ready img { opacity: 0; }
.bili-signal video { opacity: 0; }
.bili-signal.is-video-ready video { opacity: 1; }

@keyframes biliFallbackDrift {
  from { transform: scale(1.03) translate3d(-1.5%, -.7%, 0); }
  to { transform: scale(1.12) translate3d(1.8%, 1%, 0); }
}

.bili-tv.is-switching .bili-screen {
  animation: biliSwitchFlash .38s steps(2, end);
}

@keyframes biliSwitchFlash {
  0% { filter: brightness(1); transform: scaleY(1); }
  35% { filter: brightness(2.3) contrast(.2); transform: scaleY(.018); }
  58% { filter: brightness(.3); transform: scaleY(.018); }
  100% { filter: brightness(1); transform: scaleY(1); }
}

.bili-tv-lower {
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 8%;
  height: 19%;
}

.bili-drive-slot {
  position: absolute;
  right: 2%;
  top: 22%;
  width: 45%;
  height: 15%;
  border-radius: 3px;
  background: linear-gradient(#2e2d29, #080808 55%, #777166 60%, #292824 72%);
  box-shadow: 0 1px 0 rgba(255,255,255,.28);
}

.bili-drive-slot::after {
  content: "";
  position: absolute;
  right: -5%;
  top: -36%;
  width: 28%;
  height: 172%;
  border-radius: 3px;
  background: linear-gradient(90deg, #817b6f, #b7b1a2 52%, #706b61);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.38);
}

.bili-power {
  position: absolute;
  left: 2%;
  top: 29%;
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 1px solid #4d493f;
  background: #252421;
  box-shadow: inset 0 0 0 3px #aaa394;
}

.bili-power::after {
  content: "";
  position: absolute;
  inset: 4px;
  background: #5b73ce;
}

.bili-machine-label {
  position: absolute;
  left: 14%;
  top: 28%;
  font: 600 11px/1 "IBM Plex Mono", monospace;
  color: rgba(37,35,31,.72);
  letter-spacing: -.04em;
}

.bili-caption {
  position: absolute;
  left: 50%;
  bottom: 4.5vh;
  width: min(520px, 68vw);
  transform: translateX(-50%);
  text-align: center;
  z-index: 9;
}

.bili-caption .bili-caption-index {
  display: block;
  margin-bottom: 8px;
  font: 500 9px/1 "IBM Plex Mono", monospace;
  opacity: .52;
}

.bili-caption h3 {
  margin: 0;
  font-size: clamp(20px, 2vw, 30px);
  font-weight: 500;
  letter-spacing: -.035em;
}

.bili-caption p {
  margin: 7px 0 0;
  font: 400 9px/1.5 "IBM Plex Mono", monospace;
  opacity: .58;
  text-transform: uppercase;
}

.bili-channel-index {
  position: absolute;
  right: 4.2vw;
  top: 50%;
  z-index: 9;
  transform: translateY(-50%);
  display: grid;
  gap: 11px;
}

.bili-channel-index button {
  display: grid;
  grid-template-columns: 28px 52px;
  align-items: center;
  gap: 8px;
  color: inherit;
  opacity: .32;
  font: 500 9px/1 "IBM Plex Mono", monospace;
  transition: opacity .3s, transform .4s cubic-bezier(.22,1,.36,1);
}

.bili-channel-index button::after {
  content: "";
  height: 1px;
  background: currentColor;
  transform: scaleX(.25);
  transform-origin: left;
  transition: transform .4s cubic-bezier(.22,1,.36,1);
}

.bili-channel-index button.is-active {
  opacity: 1;
  transform: translateX(-7px);
}

.bili-channel-index button.is-active::after { transform: scaleX(1); }

.bili-scroll-meter {
  position: absolute;
  left: 4.2vw;
  bottom: 5vh;
  z-index: 9;
  width: min(280px, 24vw);
  font: 500 8px/1 "IBM Plex Mono", monospace;
}

.bili-meter-track {
  height: 1px;
  background: rgba(255,255,255,.24);
  overflow: hidden;
}

.bili-meter-track span {
  display: block;
  width: 100%;
  height: 100%;
  background: currentColor;
  transform: scaleX(var(--bili-progress, 0));
  transform-origin: left;
}

.bili-meter-copy {
  display: flex;
  justify-content: space-between;
  margin-top: 9px;
  opacity: .58;
}

.bili-next-note {
  position: absolute;
  left: 50%;
  bottom: 1.7vh;
  z-index: 9;
  transform: translateX(-50%);
  font: 500 8px/1 "IBM Plex Mono", monospace;
  opacity: .48;
  letter-spacing: .08em;
}

body.is-bili-section .site-header {
  color: #f3f2ed;
  border-bottom-color: rgba(255,255,255,.13);
  transition: color .45s ease, border-color .45s ease;
}

body.is-bili-section .cursor-dot { color: #fff; }

@media (max-width: 900px) {
  .bili-heading { top: 12vh; width: 44vw; }
  .bili-system-meta { display: none; }
  .bili-tv { width: min(38vw, 340px); }
  .bili-channel-index { right: 3vw; }
}

@media (max-width: 620px) {
  .video-scene.xhs-mode .xhs-scrapbook { min-height: calc(100vh - 64px); margin-top: 64px; }
  .bili-scroll-section { min-height: 1500px; }
  .bili-sticky { min-height: 600px; }
  .bili-heading { left: 18px; top: 10vh; width: calc(100vw - 36px); }
  .bili-heading h2 { font-size: 46px; }
  .bili-heading > p:last-child { width: 260px; }
  .bili-tv-stage { width: 100vw; height: 72vh; padding-top: 9vh; }
  .bili-tv { width: min(67vw, 320px); transform: translateY(4vh); }
  .bili-channel-index { right: 12px; top: 56%; }
  .bili-channel-index button { grid-template-columns: 20px 28px; }
  .bili-scroll-meter { left: 18px; bottom: 42px; width: 120px; }
  .bili-caption { bottom: 7vh; width: 78vw; }
  .bili-caption p { display: none; }
  .bili-next-note { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .bili-signal img { animation: none; }
  .bili-tv, .bili-signal, .bili-channel-index button { transition-duration: .01ms !important; }
}