/* ═══════════════════════════════════════════════════════
   作品集影片 · 入口层
   00 Intro → 播放 / 跳过 · 与站点同一套色板与字阶
   ═══════════════════════════════════════════════════════ */

html.is-introlocked,
html.is-introlocked body {
  overflow: hidden;
}

/* ── 选择层 ─────────────────────────────────────────── */

.intro {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: center;
  background: rgba(8, 9, 10, .90);
  -webkit-backdrop-filter: blur(28px) saturate(.82);
  backdrop-filter: blur(28px) saturate(.82);
  transition: opacity .62s var(--ease), visibility .62s;
  overscroll-behavior: contain;
}

@supports not (backdrop-filter: blur(1px)) {
  .intro { background: rgba(8, 9, 10, .97); }
}

html.no-intro .intro {
  display: none;
}

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

/* 底纹：一圈极淡的星轨，呼应影片开场 */
.intro__ring {
  position: absolute;
  width: min(112vh, 1120px);
  height: min(112vh, 1120px);
  display: grid;
  place-items: center;
  opacity: .5;
  pointer-events: none;
}

.intro__ring svg {
  width: 100%;
  height: 100%;
  animation: introOrbit 120s linear infinite;
}

.intro__ring::after {
  content: "";
  position: absolute;
  width: 62%;
  height: 62%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 180, 135, .10) 0%, rgba(201, 180, 135, .03) 46%, rgba(8, 9, 10, 0) 72%);
}

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

.intro__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 760px;
  padding: 0 28px;
  text-align: center;
}

.intro__eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 0 0 30px;
  font-family: var(--ui);
  font-size: 10px;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: rgba(237, 234, 227, .42);
}

.intro__eyebrow b {
  font-weight: 400;
  color: var(--accent);
}

.intro__eyebrow i {
  display: block;
  width: 46px;
  height: 1px;
  background: rgba(201, 180, 135, .5);
}

.intro__eyebrow em {
  font-style: normal;
}

.intro__title {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-size: clamp(40px, 5.6vw, 70px);
  font-weight: 300;
  line-height: 1.24;
  letter-spacing: .2em;
  text-indent: .2em;
  color: var(--text);
}

.intro__latin {
  margin: 0 0 46px;
  font-family: var(--ui);
  font-size: 10px;
  letter-spacing: .44em;
  text-indent: .44em;
  text-transform: uppercase;
  color: var(--text-4);
}

.intro__latin span {
  color: var(--accent);
  opacity: .75;
  margin: 0 8px;
}

.intro__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
}

.intro__play {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 15px 32px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: var(--text);
  color: var(--bg);
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: .12em;
  text-indent: .12em;
  box-shadow: 0 14px 44px rgba(201, 180, 135, .16);
  transition: background .35s var(--ease), transform .35s var(--ease), box-shadow .35s var(--ease);
}

.intro__play svg {
  margin-left: -2px;
  transition: transform .35s var(--ease);
}

.intro__play:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 18px 54px rgba(201, 180, 135, .26);
}

.intro__play:hover svg { transform: translateX(2px); }
.intro__play:active { transform: translateY(0) scale(.99); }

.intro__skip {
  padding: 7px 2px;
  border: 0;
  border-bottom: 1px solid rgba(237, 234, 227, .18);
  background: none;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 300;
  letter-spacing: .16em;
  color: var(--text-3);
  transition: color .3s var(--ease), border-color .3s var(--ease);
}

.intro__skip:hover {
  color: var(--text);
  border-color: rgba(201, 180, 135, .7);
}

.intro__note {
  margin: 36px 0 0;
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 300;
  letter-spacing: .22em;
  color: rgba(237, 234, 227, .3);
}

/* 入场：依次抬起，克制一点 */
.intro__inner > * {
  animation: introRise .95s var(--ease) both;
}

.intro__inner > :nth-child(1) { animation-delay: .04s; }
.intro__inner > :nth-child(2) { animation-delay: .12s; }
.intro__inner > :nth-child(3) { animation-delay: .2s; }
.intro__inner > :nth-child(4) { animation-delay: .3s; }
.intro__inner > :nth-child(5) { animation-delay: .4s; }

@keyframes introRise {
  from {
    opacity: 0;
    transform: translateY(14px);
    filter: blur(6px);
  }
  to {
    opacity: 1;
    transform: none;
    filter: none;
  }
}

/* ── 播放层 ─────────────────────────────────────────── */

.reel {
  position: fixed;
  inset: 0;
  z-index: 320;
  display: grid;
  place-items: center;
  /* 留一圈黑边当银幕衬底，播放器的按钮就不会压到片子自带的角落信息 */
  padding: clamp(20px, 5vh, 66px) clamp(20px, 5vw, 66px);
  background: #000;
  opacity: 0;
  visibility: hidden;
  transition: opacity .55s var(--ease), visibility .55s;
}

.reel.is-in {
  opacity: 1;
  visibility: visible;
}

.reel__video {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  background: #000;
  cursor: pointer;
}

.reel__close {
  position: absolute;
  top: clamp(10px, 1.8vh, 22px);
  right: clamp(10px, 1.8vw, 22px);
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 50%;
  background: rgba(8, 9, 10, .38);
  color: #B5B1A8;
  cursor: pointer;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity .5s var(--ease), border-color .3s var(--ease), color .3s var(--ease);
}

.reel.is-in .reel__close {
  opacity: .55;
  transition-delay: .8s;
}

.reel__close:hover,
.reel__close:focus-visible {
  opacity: 1;
  border-color: rgba(201, 180, 135, .55);
  color: var(--text);
  outline: none;
}

.reel__bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0 clamp(0px, 5vw, 66px);
  height: 2px;
  background: rgba(255, 255, 255, .07);
}

.reel__bar span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--accent);
  box-shadow: 0 0 14px rgba(201, 180, 135, .55);
}

.reel__hint {
  position: absolute;
  left: 26px;
  bottom: 22px;
  margin: 0;
  font-family: var(--ui);
  font-size: 10px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: rgba(237, 234, 227, .3);
  opacity: 0;
  transition: opacity .5s var(--ease);
  pointer-events: none;
}

.reel.is-in .reel__hint {
  opacity: 1;
  transition-delay: 1.2s;
}

.reel.is-idle .reel__close,
.reel.is-idle .reel__hint {
  opacity: 0;
  transition-delay: 0s;
}

/* 暂停时浮出的播放键 */
.reel__pause {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 68px;
  height: 68px;
  margin: -34px 0 0 -34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 50%;
  background: rgba(8, 9, 10, .45);
  color: var(--text);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s var(--ease);
}

.reel.is-paused .reel__pause {
  opacity: 1;
}

@media (max-width: 640px) {
  .intro__title { letter-spacing: .14em; text-indent: .14em; }
  .intro__latin { margin-bottom: 38px; }
  .intro__actions { gap: 20px; }
  .intro__play { padding: 14px 26px; font-size: 13px; }
  .intro__note { margin-top: 30px; }
  .reel__close { top: 16px; right: 16px; width: 38px; height: 38px; }
  .reel__hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .intro__inner > * { animation: none; }
  .intro__ring svg { animation: none; }
  .intro { transition-duration: .01s; }
  .reel { transition-duration: .01s; }
}