/* 黑银人物档案：由登录首页“关于作者”入口打开，不参与开机动画。 */
body.author-intro-open { overflow: hidden; }

.author-intro {
  --author-pointer-x: 0px;
  --author-pointer-y: 0px;
  position: fixed;
  inset: 0;
  z-index: 10500;
  min-height: 100svh;
  overflow: hidden;
  color: #edf1f4;
  background: #040609;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  isolation: isolate;
  transition: opacity .62s cubic-bezier(.22,.7,.16,1), visibility .62s ease;
}

.author-intro[hidden],
.author-intro-slide[hidden] { display: none; }

.author-intro.is-active {
  opacity: 1;
  visibility: visible;
}

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

.author-intro:focus { outline: none; }

.author-intro-close {
  position: absolute;
  z-index: 8;
  top: max(24px, env(safe-area-inset-top));
  left: clamp(24px, 4vw, 64px);
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid rgba(196, 210, 222, .24);
  border-radius: 999px;
  color: rgba(235, 240, 244, .78);
  background: rgba(8, 11, 15, .66);
  box-shadow: 0 16px 40px rgba(0, 0, 0, .24);
  backdrop-filter: blur(16px);
  font: 500 12px/1 "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: .12em;
  cursor: pointer;
  transition: color .24s ease, border-color .24s ease, background-color .24s ease, transform .24s ease;
}

.author-intro-close svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.author-intro-close:hover,
.author-intro-close:focus-visible {
  color: #fff;
  border-color: rgba(218, 228, 236, .5);
  background: rgba(14, 18, 23, .88);
  transform: translateY(-1px);
}

.author-intro-close:focus-visible { outline: 2px solid rgba(203, 220, 233, .46); outline-offset: 3px; }

.author-intro::before,
.author-intro::after,
.author-intro-ambient {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.author-intro::before {
  z-index: -3;
  background:
    radial-gradient(circle at 76% 44%, rgba(70, 96, 121, .17), transparent 35%),
    radial-gradient(circle at 18% 78%, rgba(104, 83, 54, .09), transparent 30%),
    #040609;
}

.author-intro::after {
  z-index: 4;
  background:
    linear-gradient(90deg, rgba(4,6,9,.22), transparent 24% 76%, rgba(4,6,9,.22)),
    linear-gradient(180deg, rgba(255,255,255,.025), transparent 18%, transparent 78%, rgba(0,0,0,.34));
  mix-blend-mode: screen;
}

.author-intro-ambient {
  z-index: -2;
  opacity: .26;
  background-image:
    linear-gradient(rgba(175, 196, 214, .075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(175, 196, 214, .045) 1px, transparent 1px);
  background-size: 100% 25vh, 25vw 100%;
  mask-image: linear-gradient(90deg, transparent, #000 18% 82%, transparent);
}

.author-intro-slide {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(320px, .92fr) minmax(420px, 1.08fr);
  align-items: center;
  gap: clamp(36px, 7vw, 120px);
  padding: clamp(58px, 7vw, 112px) clamp(42px, 8vw, 148px) clamp(92px, 10vh, 126px);
  opacity: 0;
  visibility: hidden;
  transform: translate3d(0, 24px, 0);
  transition:
    opacity .62s cubic-bezier(.22,.7,.16,1),
    transform .62s cubic-bezier(.22,.7,.16,1),
    visibility .62s ease;
}

.author-intro-slide.is-active {
  opacity: 1;
  visibility: visible;
  transform: translate3d(0, 0, 0);
}

.author-intro-slide.is-leaving {
  opacity: 0;
  visibility: hidden;
  transform: translate3d(-22px, 0, 0);
}

.author-intro-portrait {
  position: relative;
  align-self: stretch;
  min-height: min(72vh, 760px);
  margin: 0;
  overflow: hidden;
  transform: translate3d(calc(var(--author-pointer-x) * -.34), calc(var(--author-pointer-y) * -.34), 0);
  transition: transform .8s cubic-bezier(.22,.7,.16,1);
  mask-image: linear-gradient(180deg, transparent 0, #000 11%, #000 82%, transparent 100%);
}

.author-intro-portrait::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(4,6,9,.68) 0, transparent 18% 76%, rgba(4,6,9,.1) 100%),
    linear-gradient(180deg, rgba(4,6,9,.1), transparent 32% 74%, rgba(4,6,9,.72));
  pointer-events: none;
}

.author-intro-portrait picture,
.author-intro-portrait img {
  display: block;
  width: 100%;
  height: 100%;
}

.author-intro-portrait img {
  position: absolute;
  inset: 0;
  object-fit: cover;
  object-position: 50% 42%;
  filter: saturate(1.08) brightness(.9) contrast(1.02);
  transform: scale(1.025);
  animation: authorPortraitDrift 12s ease-in-out infinite alternate;
}

.author-intro-slide[data-author-slide="1"] .author-intro-portrait img { object-position: 50% 28%; }
.author-intro-slide[data-author-slide="2"] .author-intro-portrait img { object-position: 50% 38%; }

.author-intro-copy {
  position: relative;
  z-index: 2;
  max-width: 700px;
  transform: translate3d(calc(var(--author-pointer-x) * .46), calc(var(--author-pointer-y) * .46), 0);
  transition: transform .8s cubic-bezier(.22,.7,.16,1);
}

.author-intro-number {
  position: absolute;
  right: calc(100% + clamp(20px, 3vw, 58px));
  top: -.2em;
  margin: 0;
  color: rgba(188, 202, 214, .14);
  font: 300 clamp(76px, 10vw, 166px)/.82 Georgia, "Times New Roman", serif;
  letter-spacing: -.07em;
  animation: authorTextFloat 7.6s ease-in-out -.8s infinite alternate;
}

.author-intro-copy h1,
.author-intro-copy h2 {
  margin: 0;
  font-weight: 400;
}

.author-intro-copy h1 span,
.author-intro-copy h2 span {
  display: block;
  margin-bottom: clamp(14px, 2.2vh, 24px);
  color: rgba(198, 211, 222, .62);
  font: 500 clamp(14px, 1.2vw, 18px)/1.4 "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: .34em;
  animation: authorTextFloat 6.8s ease-in-out -.2s infinite alternate;
}

.author-intro-copy h1 strong,
.author-intro-copy h2 strong {
  display: block;
  color: #f1f3f5;
  font: 400 clamp(46px, 6vw, 90px)/1.04 Georgia, "Songti SC", "STSong", serif;
  letter-spacing: .025em;
  text-wrap: balance;
  text-shadow: 0 18px 46px rgba(0,0,0,.44);
  animation: authorTextFloat 8.2s ease-in-out -1.6s infinite alternate-reverse;
}

.author-intro-details {
  display: grid;
  gap: 12px;
  margin-top: clamp(34px, 5vh, 60px);
  padding-top: clamp(24px, 3.5vh, 38px);
  border-top: 1px solid rgba(184, 200, 214, .19);
}

.author-intro-details p {
  margin: 0;
  color: rgba(219, 226, 232, .72);
  font: 400 clamp(15px, 1.3vw, 19px)/1.75 "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: .05em;
  text-wrap: pretty;
  animation: authorTextFloat 7.4s ease-in-out -2.4s infinite alternate;
}

.author-intro-details p + p {
  color: rgba(183, 198, 210, .56);
  animation-delay: -3.5s;
}

.author-intro-controls {
  position: absolute;
  z-index: 6;
  right: clamp(26px, 5vw, 84px);
  bottom: max(24px, env(safe-area-inset-bottom));
  left: clamp(26px, 5vw, 84px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  pointer-events: none;
}

.author-intro-controls p {
  margin: 0;
  color: rgba(184, 200, 214, .42);
  font: 500 12px/1 ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
  letter-spacing: .22em;
}

.author-intro-controls button {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  min-height: 48px;
  padding: 0;
  border: 0;
  color: rgba(231, 237, 242, .78);
  background: transparent;
  font: 500 13px/1 "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: .18em;
  cursor: pointer;
  pointer-events: auto;
}

.author-intro-controls button::before {
  content: "";
  width: clamp(52px, 6vw, 92px);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(205, 216, 225, .52));
  transition: width .28s ease, background-color .28s ease;
}

.author-intro-controls button svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.35;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform .28s ease;
}

.author-intro-controls button:hover,
.author-intro-controls button:focus-visible { color: #fff; }
.author-intro-controls button:hover::before,
.author-intro-controls button:focus-visible::before { width: clamp(68px, 8vw, 118px); }
.author-intro-controls button:hover svg,
.author-intro-controls button:focus-visible svg { transform: translateX(5px); }
.author-intro-controls button:focus-visible { outline: 1px solid rgba(197, 211, 223, .46); outline-offset: 10px; }

.author-intro-status {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

@keyframes authorTextFloat {
  from { transform: translate3d(0, -3px, 0); }
  to { transform: translate3d(0, 5px, 0); }
}

@keyframes authorPortraitDrift {
  from { transform: scale(1.025) translate3d(-.35%, -.3%, 0); }
  to { transform: scale(1.055) translate3d(.45%, .4%, 0); }
}

@media (min-width: 861px) {
  .author-intro-slide:nth-of-type(even) {
    grid-template-columns: minmax(420px, 1.08fr) minmax(320px, .92fr);
  }

  .author-intro-slide:nth-of-type(even) .author-intro-portrait { grid-column: 2; grid-row: 1; }
  .author-intro-slide:nth-of-type(even) .author-intro-copy { grid-column: 1; grid-row: 1; }
  .author-intro-slide:nth-of-type(even) .author-intro-number { right: auto; left: calc(100% + clamp(20px, 3vw, 58px)); }
}

@media (max-width: 860px) {
  .author-intro-close {
    top: max(14px, env(safe-area-inset-top));
    left: 16px;
    min-height: 44px;
    padding: 0 14px;
  }

  .author-intro-slide {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(240px, 44svh) auto;
    align-content: center;
    gap: 0;
    padding: max(20px, env(safe-area-inset-top)) 24px max(92px, calc(env(safe-area-inset-bottom) + 74px));
  }

  .author-intro-portrait {
    min-height: 0;
    width: min(100%, 560px);
    height: 100%;
    justify-self: center;
    mask-image: linear-gradient(180deg, transparent 0, #000 7%, #000 78%, transparent 100%);
  }

  .author-intro-portrait::after {
    background:
      linear-gradient(90deg, rgba(4,6,9,.52), transparent 20% 80%, rgba(4,6,9,.52)),
      linear-gradient(180deg, rgba(4,6,9,.08), transparent 30% 66%, rgba(4,6,9,.78));
  }

  .author-intro-copy {
    align-self: start;
    width: min(100%, 560px);
    margin: clamp(-28px, -3vh, -18px) auto 0;
    padding: 0 clamp(4px, 3vw, 18px);
  }

  .author-intro-number {
    right: 0;
    top: -.34em;
    font-size: clamp(64px, 21vw, 102px);
  }

  .author-intro-copy h1 span,
  .author-intro-copy h2 span {
    margin-bottom: 10px;
    font-size: 12px;
    letter-spacing: .28em;
  }

  .author-intro-copy h1 strong,
  .author-intro-copy h2 strong {
    max-width: 86%;
    font-size: clamp(38px, 12vw, 58px);
  }

  .author-intro-details {
    gap: 8px;
    margin-top: 22px;
    padding-top: 17px;
  }

  .author-intro-details p {
    max-width: 92%;
    font-size: clamp(13px, 3.7vw, 16px);
    line-height: 1.62;
    letter-spacing: .025em;
  }

  .author-intro-controls {
    right: 24px;
    bottom: max(18px, env(safe-area-inset-bottom));
    left: 24px;
  }

  .author-intro-controls button { gap: 10px; font-size: 12px; letter-spacing: .1em; }
  .author-intro-controls button::before { display: none; }
}

@media (max-width: 680px) {
  body > .realm-v3-cassell-launch,
  body > main.landing { display: none !important; }
}

@media (max-width: 860px) and (max-height: 500px) {
  .author-intro-close span { display: none; }
  .author-intro-close { width: 42px; min-height: 42px; padding: 0; justify-content: center; }

  .author-intro-slide {
    grid-template-columns: minmax(180px, .72fr) minmax(0, 1.28fr);
    grid-template-rows: minmax(0, 1fr);
    align-content: stretch;
    gap: clamp(20px, 4vw, 38px);
    padding: max(14px, env(safe-area-inset-top)) 24px max(62px, calc(env(safe-area-inset-bottom) + 54px));
  }

  .author-intro-portrait {
    align-self: center;
    width: 100%;
    height: min(70svh, 262px);
  }

  .author-intro-copy {
    align-self: center;
    width: 100%;
    margin: 0;
    padding: 0;
  }

  .author-intro-number {
    right: 0;
    top: -.18em;
    font-size: clamp(52px, 11vw, 74px);
  }

  .author-intro-copy h1 span,
  .author-intro-copy h2 span {
    margin-bottom: 6px;
    font-size: 10px;
  }

  .author-intro-copy h1 strong,
  .author-intro-copy h2 strong {
    max-width: 92%;
    font-size: clamp(31px, 6.6vw, 44px);
  }

  .author-intro-details {
    gap: 4px;
    margin-top: 13px;
    padding-top: 10px;
  }

  .author-intro-details p {
    max-width: 100%;
    font-size: clamp(11px, 2.1vw, 13px);
    line-height: 1.42;
  }

  .author-intro-controls {
    right: 24px;
    bottom: max(7px, env(safe-area-inset-bottom));
    left: 24px;
  }
}

@media (max-width: 420px) and (max-height: 740px) {
  .author-intro-slide {
    grid-template-rows: minmax(190px, 39svh) auto;
    padding-top: 10px;
  }

  .author-intro-copy h1 strong,
  .author-intro-copy h2 strong { font-size: clamp(34px, 10.6vw, 46px); }
  .author-intro-details { margin-top: 16px; padding-top: 13px; }
  .author-intro-details p { line-height: 1.5; }
}

@media (prefers-reduced-motion: reduce) {
  .author-intro,
  .author-intro-slide,
  .author-intro-portrait,
  .author-intro-copy { transition-duration: .001ms; }
  .author-intro-number,
  .author-intro-copy h1 span,
  .author-intro-copy h1 strong,
  .author-intro-copy h2 span,
  .author-intro-copy h2 strong,
  .author-intro-details p,
  .author-intro-portrait img { animation: none; }
}