/* 点击主题碎片后，先看到对应主题空间的模糊预映，再读取前景信息。 */
.theme-preview {
  overflow: hidden;
  isolation: isolate;
}

.preview-scrim {
  z-index: 0;
  background: rgba(0, 4, 11, 0.62);
  backdrop-filter: blur(3px) saturate(0.72) brightness(0.62);
}

.preview-context {
  --context-accent: #4fbaff;
  position: absolute;
  z-index: 1;
  inset: -5%;
  overflow: hidden;
  color: rgba(231, 243, 251, 0.92);
  background:
    radial-gradient(circle at 78% 22%, color-mix(in srgb, var(--context-accent) 20%, transparent), transparent 34%),
    linear-gradient(125deg, rgba(7, 25, 42, 0.96), rgba(1, 6, 13, 0.99));
  filter: blur(6px) saturate(0.74);
  opacity: 0.5;
  transform: scale(1.035);
  pointer-events: none;
  will-change: opacity, transform, filter;
}

.preview-context[data-theme="creation"] { --context-accent: #8b86ff; }
.preview-context[data-theme="exploration"] { --context-accent: #48b9ff; }
.preview-context[data-theme="inspiration"] { --context-accent: #d865b7; }
.preview-context[data-theme="vision"] { --context-accent: #e8202c; }

.preview-context::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 3, 9, 0.62), transparent 38%, rgba(0, 2, 8, 0.34)),
    repeating-linear-gradient(180deg, rgba(134, 207, 255, 0.025) 0 1px, transparent 1px 5px);
}

.preview-context__stage {
  position: absolute;
  inset: 8% 7%;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: clamp(54px, 9vh, 100px);
}

.preview-context__heading {
  max-width: min(660px, 62vw);
}

.preview-context__heading h3,
.preview-context__heading p {
  margin: 0;
}

.preview-context__heading h3 {
  font-size: clamp(54px, 8vw, 124px);
  font-weight: 680;
  line-height: 0.92;
  letter-spacing: -0.055em;
}

.preview-context__heading p {
  max-width: 620px;
  margin-top: 22px;
  color: rgba(180, 210, 230, 0.72);
  font-size: clamp(14px, 1.2vw, 18px);
  line-height: 1.7;
}

.preview-context__content {
  align-self: end;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.preview-context__entry {
  min-height: 210px;
  padding: 28px;
  border: 1px solid color-mix(in srgb, var(--context-accent) 25%, transparent);
  background: rgba(5, 16, 28, 0.72);
}

.preview-context__entry strong,
.preview-context__entry span {
  display: block;
}

.preview-context__entry strong {
  font-size: 20px;
  line-height: 1.35;
}

.preview-context__entry span {
  margin-top: 18px;
  color: rgba(169, 199, 218, 0.68);
  font-size: 14px;
  line-height: 1.7;
}

.preview-context__gallery {
  align-self: end;
  display: grid;
  grid-template-columns: repeat(5, minmax(160px, 1fr));
  gap: 20px;
  transform: rotate(-2deg) translateX(-3vw);
}

.preview-context__gallery img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid color-mix(in srgb, var(--context-accent) 28%, transparent);
  box-shadow: 0 28px 58px rgba(0, 0, 0, 0.5);
}

.preview-card {
  --preview-edge: #62c9ff;
  --preview-shape: polygon(3% 18%, 17% 5%, 42% 7%, 52% 1%, 80% 8%, 97% 25%, 93% 68%, 82% 93%, 53% 98%, 35% 92%, 12% 95%, 2% 70%);
  z-index: 2;
  width: min(1160px, 82vw);
  min-height: min(690px, 76vh);
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  isolation: isolate;
}

.preview-card::before {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 13px 15px 17px;
  padding: 1px;
  background: linear-gradient(138deg, rgba(145, 220, 255, 0.58), rgba(49, 130, 235, 0.22));
  clip-path: var(--preview-shape);
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.34;
  pointer-events: none;
}

.preview-card__surface {
  position: absolute;
  z-index: 0;
  inset: 0;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: linear-gradient(
    138deg,
    rgba(177, 230, 255, 0.92),
    var(--preview-edge) 17%,
    rgba(31, 103, 209, 0.8) 61%,
    rgba(143, 215, 255, 0.72)
  );
  clip-path: var(--preview-shape);
  filter:
    drop-shadow(0 52px 90px rgba(0, 0, 0, 0.72))
    drop-shadow(0 0 18px rgba(49, 139, 255, 0.2));
}

.preview-card__surface::before {
  content: "";
  position: absolute;
  inset: 2px;
  background:
    linear-gradient(90deg, rgba(1, 6, 15, 0.76) 0%, rgba(1, 5, 13, 0.54) 42%, rgba(0, 4, 12, 0.68) 100%),
    linear-gradient(0deg, rgba(0, 3, 10, 0.72), transparent 58%),
    url("./assets/theme/preview-ice-fill.webp") 52% 50% / cover no-repeat;
  clip-path: var(--preview-shape);
  filter: saturate(0.9) brightness(0.86) contrast(1.08);
}

.preview-card__surface::after {
  content: "";
  position: absolute;
  inset: 2px;
  height: auto;
  background:
    linear-gradient(122deg, rgba(255, 255, 255, 0.06), transparent 18% 76%, rgba(89, 179, 255, 0.05)),
    repeating-linear-gradient(180deg, rgba(136, 211, 255, 0.025) 0 1px, transparent 1px 5px);
  clip-path: var(--preview-shape);
}

.preview-card__body {
  position: relative;
  z-index: 3;
  display: flex;
  width: 56%;
  min-height: inherit;
  justify-content: center;
  padding: clamp(64px, 7vw, 104px) clamp(54px, 7vw, 106px);
}

.preview-card h2 {
  max-width: 560px;
  color: rgba(246, 250, 253, 0.98);
  font-size: clamp(58px, 7.2vw, 102px);
  font-weight: 690;
  line-height: 0.96;
  letter-spacing: -0.058em;
  text-shadow: 0 18px 46px rgba(0, 0, 0, 0.42);
}

.preview-card .preview-card__body > .preview-card__lead {
  margin-top: 28px;
  color: rgba(225, 237, 246, 0.88);
  font-size: clamp(15px, 1.3vw, 18px);
  line-height: 1.72;
}

.preview-card .preview-card__body > .preview-card__note {
  margin-top: 16px;
  color: rgba(169, 197, 215, 0.72);
  font-size: 13px;
  line-height: 1.74;
}

.preview-card__fragment {
  z-index: 4;
  top: calc(var(--preview-fragment-y) - 3%);
  right: calc(var(--preview-fragment-x) - 10%);
  width: calc(var(--preview-fragment-width) + 3%);
  max-width: 790px;
  pointer-events: none;
}

.preview-card__fragment img {
  filter:
    drop-shadow(0 48px 44px rgba(0, 0, 0, 0.68))
    drop-shadow(0 0 28px color-mix(in srgb, var(--preview-accent) 14%, transparent));
}

.enter-theme {
  position: relative;
  isolation: isolate;
  gap: 22px;
  min-width: 238px;
  min-height: 54px;
  margin-top: 34px;
  padding: 11px 19px 12px 25px;
  border: 0;
  border-radius: 0;
  color: rgba(242, 248, 252, 0.94);
  background: transparent;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 17px, calc(100% - 8px) 100%, 16px 100%, 0 calc(100% - 14px));
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.035em;
  box-shadow: none;
  transform: translateZ(0);
  transition: color 180ms ease, transform 260ms cubic-bezier(0.16, 1, 0.3, 1);
}

.enter-theme::before,
.enter-theme::after {
  content: "";
  position: absolute;
  clip-path: inherit;
  pointer-events: none;
}

.enter-theme::before {
  z-index: -2;
  inset: 0;
  background:
    linear-gradient(
      108deg,
      rgba(86, 165, 221, 0.42) 0 34%,
      rgba(209, 244, 255, 0.9) 47%,
      rgba(83, 171, 230, 0.5) 59% 100%
    )
    100% 50% / 235% 100%;
  transition: background-position 460ms cubic-bezier(0.16, 1, 0.3, 1);
}

.enter-theme::after {
  z-index: -1;
  inset: 1px;
  background:
    linear-gradient(112deg, rgba(10, 29, 45, 0.88), rgba(3, 12, 23, 0.94) 60%, rgba(2, 8, 17, 0.98)),
    #020a13;
  transition: background-position 480ms cubic-bezier(0.16, 1, 0.3, 1);
}

.enter-theme__label {
  position: relative;
  z-index: 1;
  display: inline-block;
  color: inherit;
  white-space: nowrap;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.44);
}

.enter-theme__arrow {
  position: relative;
  z-index: 1;
  display: inline-flex;
  width: 38px;
  align-items: center;
  justify-content: flex-end;
  color: rgba(146, 214, 248, 0.92);
  background: linear-gradient(90deg, rgba(106, 191, 236, 0.42), rgba(106, 191, 236, 0.42)) left center / 23px 1px no-repeat;
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-size: 18px;
  font-weight: 500;
  line-height: 1;
  transition: color 180ms ease, transform 280ms cubic-bezier(0.16, 1, 0.3, 1), background-size 280ms cubic-bezier(0.16, 1, 0.3, 1);
}

.enter-theme:hover,
.enter-theme:focus-visible {
  color: #fff;
  background: transparent;
  filter: none;
  transform: translate3d(3px, -1px, 0);
}

.enter-theme:hover::before,
.enter-theme:focus-visible::before {
  background-position: 0 50%;
}

.enter-theme:hover .enter-theme__arrow,
.enter-theme:focus-visible .enter-theme__arrow {
  color: #dff7ff;
  background-size: 29px 1px;
  transform: translateX(3px);
}

.enter-theme:active {
  filter: none;
  transform: translate3d(1px, 1px, 0);
}

.preview-close {
  --close-top-y: -58px;
  --close-anchor-x: 23%;
  --close-control-width: 60%;
  --close-control-height: 96px;
  --close-glyph-x: 4%;
  --close-edge-y-start: 82%;
  --close-edge-inner-start-x: 31.67%;
  --close-edge-y-inner-start: 92%;
  --close-edge-turn-one-x: 48.33%;
  --close-edge-y-turn-one: 48%;
  --close-edge-turn-two-x: 75%;
  --close-edge-y-turn-two: 67%;
  --close-edge-inner-end-x: 95%;
  --close-edge-y-inner-end: 88%;
  --close-edge-y-end: 94%;
  --close-plate-shape: polygon(
    4% 0,
    95% 0,
    100% 22%,
    100% var(--close-edge-y-end),
    var(--close-edge-inner-end-x) var(--close-edge-y-inner-end),
    var(--close-edge-turn-two-x) var(--close-edge-y-turn-two),
    var(--close-edge-turn-one-x) var(--close-edge-y-turn-one),
    var(--close-edge-inner-start-x) var(--close-edge-y-inner-start),
    0 var(--close-edge-y-start),
    0 28%
  );
  position: absolute;
  z-index: auto;
  isolation: auto;
  top: var(--close-top-y);
  right: auto;
  left: var(--close-anchor-x);
  width: var(--close-control-width);
  height: var(--close-control-height);
  padding: 0;
  border: 0;
  border-radius: 0;
  color: rgba(201, 228, 242, 0.82);
  background: transparent;
  clip-path: none;
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  box-shadow: none;
  filter: none;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transform: none;
  transition: color 180ms ease;
}

.preview-close__plate {
  position: absolute;
  z-index: 2;
  inset: 0;
  pointer-events: none;
  clip-path: var(--close-plate-shape);
  filter: none;
  transition: filter 220ms ease;
}

.preview-close__plate::before,
.preview-close__plate::after {
  content: "";
  position: absolute;
  clip-path: var(--close-plate-shape);
}

.preview-close__plate::before {
  inset: 0;
  background: linear-gradient(
    138deg,
    rgba(177, 230, 255, 0.92),
    var(--preview-edge) 17%,
    rgba(31, 103, 209, 0.8) 61%,
    rgba(143, 215, 255, 0.72)
  );
  filter:
    drop-shadow(0 18px 32px rgba(0, 0, 0, 0.5))
    drop-shadow(0 0 14px color-mix(in srgb, var(--preview-accent) 18%, transparent));
  transition: filter 240ms ease;
}

.preview-close__plate::after {
  inset: 2px;
  background:
    linear-gradient(90deg, rgba(1, 6, 15, 0.48) 0%, rgba(1, 5, 13, 0.24) 42%, rgba(0, 4, 12, 0.44) 100%),
    linear-gradient(0deg, rgba(0, 3, 10, 0.46), transparent 64%),
    url("./assets/theme/preview-close-fill.jpg") 52% 46% / cover no-repeat;
  filter: blur(2.4px) saturate(0.92) brightness(0.84) contrast(1.08);
}

.preview-close::before {
  content: "";
  position: absolute;
  z-index: 3;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(105deg, transparent 22%, rgba(218, 248, 255, 0.18) 46%, transparent 68%) 145% 50% / 220% 100% no-repeat;
  clip-path: var(--close-plate-shape);
  opacity: 0;
  transition:
    opacity 180ms ease,
    background-position 520ms cubic-bezier(0.16, 1, 0.3, 1);
}

.preview-close__glyph {
  position: absolute;
  z-index: 6;
  top: clamp(14px, 18%, 22px);
  right: auto;
  left: var(--close-glyph-x);
  display: block;
  width: clamp(72px, 8vw, 102px);
  height: 30px;
  transition: transform 260ms cubic-bezier(0.16, 1, 0.3, 1);
}

.preview-close__glyph::before,
.preview-close__glyph::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 29px;
  height: 1px;
  background: currentColor;
  box-shadow: none;
  transform-origin: center;
}

.preview-close__glyph::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.preview-close__glyph::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.preview-close:hover,
.preview-close:focus-visible {
  border-color: transparent;
  color: #fff;
  filter: none;
  outline: none;
  transform: none;
}

.preview-close:hover .preview-close__plate::before,
.preview-close:focus-visible .preview-close__plate::before {
  filter:
    drop-shadow(0 18px 32px rgba(0, 0, 0, 0.5))
    drop-shadow(0 0 18px color-mix(in srgb, var(--preview-accent) 28%, transparent));
}

.preview-close:hover::before,
.preview-close:focus-visible::before {
  opacity: 1;
  background-position: -36% 50%;
}

.preview-close:hover .preview-close__plate,
.preview-close:focus-visible .preview-close__plate {
  filter: brightness(1.08) saturate(1.06);
}

.preview-close:focus-visible .preview-close__plate::before {
  filter:
    drop-shadow(0 0 5px rgba(121, 211, 255, 0.4))
    drop-shadow(0 8px 18px rgba(0, 6, 15, 0.38));
}

.preview-close:hover .preview-close__glyph,
.preview-close:focus-visible .preview-close__glyph {
  transform: scale(0.86);
}

.preview-close:active {
  color: #dff7ff;
  transform: none;
}

.preview-close:active .preview-close__plate {
  filter: brightness(1.16) saturate(1.08);
}

.preview-close:active .preview-close__glyph {
  transform: scale(0.74);
}

@media (max-width: 980px) {
  .preview-card {
    width: 88vw;
  }

  .preview-card__body {
    width: 60%;
    padding-inline: 52px;
  }

  .preview-context__content {
    grid-template-columns: 1fr 1fr;
  }

  .preview-context__entry:last-child {
    display: none;
  }
}

@media (max-width: 820px) {
  .theme-preview {
    padding: 40px 14px;
  }

  .preview-context {
    inset: -7%;
    filter: blur(5px) saturate(0.7);
    opacity: 0.48;
  }

  .preview-context__stage {
    inset: 10% 9%;
    gap: 34px;
  }

  .preview-context__heading {
    max-width: 82vw;
  }

  .preview-context__heading h3 {
    font-size: clamp(52px, 18vw, 86px);
  }

  .preview-context__content {
    grid-template-columns: 1fr;
  }

  .preview-context__entry {
    min-height: 140px;
  }

  .preview-context__entry:nth-child(n + 2) {
    display: none;
  }

  .preview-context__gallery {
    grid-template-columns: repeat(3, 68vw);
  }

  .preview-card {
    --preview-shape: polygon(6% 13%, 24% 3%, 52% 6%, 73% 1%, 95% 16%, 98% 60%, 88% 89%, 61% 96%, 34% 92%, 11% 97%, 2% 69%);
    width: min(94vw, 560px);
    min-height: min(760px, 84svh);
  }

  .preview-card__body {
    width: 100%;
    min-height: inherit;
    justify-content: flex-end;
    padding: 48% 32px 58px;
  }

  .preview-card h2 {
    max-width: 84%;
    font-size: clamp(48px, 15vw, 72px);
  }

  .preview-card .preview-card__body > .preview-card__lead,
  .preview-card .preview-card__body > .preview-card__note {
    max-width: 92%;
  }

  .preview-card__fragment {
    top: -18%;
    right: -34%;
    width: 104%;
  }

  .preview-close {
    --close-top-y: -42px;
    --close-anchor-x: 27%;
    --close-control-width: 60%;
    --close-control-height: 84px;
    --close-glyph-x: 4%;
    --close-edge-inner-start-x: 41.67%;
    --close-edge-turn-one-x: 76.67%;
    --close-edge-turn-two-x: 88.33%;
    --close-edge-inner-end-x: 95%;
  }

  .preview-close__glyph {
    top: clamp(12px, 18%, 18px);
    right: auto;
    left: var(--close-glyph-x);
    width: 68px;
    height: 25px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .preview-context {
    filter: blur(6px) saturate(0.72);
    transform: none !important;
  }

  .preview-close,
  .preview-close::before,
  .preview-close__plate,
  .preview-close__plate::before,
  .preview-close__glyph {
    transition-duration: 1ms;
  }
}