:root {
  color-scheme: light;
  --ink: #27243a;
  --muted: #68647b;
  --line: rgba(70, 61, 99, 0.14);
  --surface: rgba(255, 255, 255, 0.48);
  --pointer-x: 50%;
  --pointer-y: 50%;
  --display-font: "Figtree", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

@property --pointer-width {
  syntax: "<percentage>";
  inherits: false;
  initial-value: 29%;
}

@property --pointer-height {
  syntax: "<percentage>";
  inherits: false;
  initial-value: 26%;
}

@property --pointer-inner-width {
  syntax: "<percentage>";
  inherits: false;
  initial-value: 21%;
}

@property --pointer-inner-height {
  syntax: "<percentage>";
  inherits: false;
  initial-value: 29%;
}

@property --pointer-color-a {
  syntax: "<color>";
  inherits: false;
  initial-value: rgba(238, 139, 190, 0.34);
}

@property --pointer-color-b {
  syntax: "<color>";
  inherits: false;
  initial-value: rgba(158, 129, 230, 0.23);
}

@property --pointer-color-c {
  syntax: "<color>";
  inherits: false;
  initial-value: rgba(104, 184, 238, 0.2);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

body {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  background: #fbfaff;
  color: var(--ink);
  font-family: var(--display-font);
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

button,
a {
  font: inherit;
}

.color-field {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  background: linear-gradient(135deg, #fffefe 0%, #f8fbff 46%, #fbf7ff 100%);
}

.field-layer {
  position: absolute;
  inset: -14%;
  pointer-events: none;
  background-repeat: no-repeat;
  will-change: background-position;
}

.field-layer-pink {
  background-image:
    radial-gradient(ellipse at center, rgba(255, 177, 210, 0.62), transparent 70%),
    radial-gradient(ellipse at center, rgba(255, 219, 235, 0.42), transparent 72%);
  background-position: 0% 0%, 100% 100%;
  background-size: 72% 66%, 56% 74%;
  animation: field-pink-drift 12.4s ease-in-out infinite;
}

.field-layer-blue {
  background-image:
    radial-gradient(ellipse at center, rgba(165, 215, 255, 0.65), transparent 70%),
    radial-gradient(ellipse at center, rgba(191, 235, 255, 0.5), transparent 72%);
  background-position: 100% 0%, 0% 100%;
  background-size: 68% 80%, 58% 68%;
  animation: field-blue-drift 15.7s ease-in-out infinite;
}

.field-layer-purple {
  background-image:
    radial-gradient(ellipse at center, rgba(198, 174, 255, 0.58), transparent 70%),
    radial-gradient(ellipse at center, rgba(232, 207, 255, 0.38), transparent 72%);
  background-position: 100% 100%, 45% 35%;
  background-size: 76% 62%, 50% 64%;
  animation: field-purple-drift 18.9s ease-in-out infinite;
}

.pointer-field {
  position: absolute;
  inset: -12%;
  pointer-events: none;
  background:
    radial-gradient(
      ellipse var(--pointer-width) var(--pointer-height) at var(--pointer-x) var(--pointer-y),
      var(--pointer-color-a),
      var(--pointer-color-b) 42%,
      transparent 73%
    ),
    radial-gradient(
      ellipse var(--pointer-inner-width) var(--pointer-inner-height) at
        calc(var(--pointer-x) + 2%) calc(var(--pointer-y) - 1%),
      var(--pointer-color-c),
      transparent 70%
    );
  mix-blend-mode: screen;
  animation: pointer-field-flow 5.8s ease-in-out infinite;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.16;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 140 140' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.88' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.18'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

@keyframes field-pink-drift {
  0%,
  100% { background-position: 0% 0%, 100% 100%; }
  27% { background-position: 42% 18%, 78% 52%; }
  61% { background-position: 58% 64%, 32% 44%; }
  83% { background-position: 18% 76%, 56% 18%; }
}

@keyframes field-blue-drift {
  0%,
  100% { background-position: 100% 0%, 0% 100%; }
  22% { background-position: 64% 38%, 24% 62%; }
  53% { background-position: 28% 68%, 72% 24%; }
  79% { background-position: 82% 46%, 48% 78%; }
}

@keyframes field-purple-drift {
  0%,
  100% { background-position: 100% 100%, 45% 35%; }
  31% { background-position: 46% 72%, 76% 58%; }
  57% { background-position: 24% 30%, 38% 82%; }
  86% { background-position: 72% 18%, 18% 52%; }
}

@keyframes pointer-field-flow {
  0%,
  100% {
    --pointer-width: 29%;
    --pointer-height: 26%;
    --pointer-inner-width: 21%;
    --pointer-inner-height: 29%;
    --pointer-color-a: rgba(238, 139, 190, 0.34);
    --pointer-color-b: rgba(158, 129, 230, 0.23);
    --pointer-color-c: rgba(104, 184, 238, 0.2);
  }
  36% {
    --pointer-width: 17%;
    --pointer-height: 38%;
    --pointer-inner-width: 31%;
    --pointer-inner-height: 15%;
    --pointer-color-a: rgba(151, 116, 224, 0.3);
    --pointer-color-b: rgba(90, 171, 229, 0.22);
    --pointer-color-c: rgba(231, 125, 177, 0.2);
  }
  72% {
    --pointer-width: 38%;
    --pointer-height: 17%;
    --pointer-inner-width: 15%;
    --pointer-inner-height: 34%;
    --pointer-color-a: rgba(91, 171, 226, 0.3);
    --pointer-color-b: rgba(232, 126, 179, 0.22);
    --pointer-color-c: rgba(157, 119, 224, 0.2);
  }
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: max(24px, env(safe-area-inset-top)) max(30px, env(safe-area-inset-right)) 0
    max(30px, env(safe-area-inset-left));
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(68, 60, 92, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.4);
  box-shadow: 0 10px 35px rgba(87, 75, 123, 0.08);
  color: #554b72;
  font-size: 17px;
  font-weight: 650;
  backdrop-filter: blur(14px);
}

.language-switch {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.45);
  box-shadow: 0 10px 35px rgba(87, 75, 123, 0.08);
  backdrop-filter: blur(14px);
}

.language-switch span {
  width: 1px;
  height: 16px;
  background: rgba(70, 61, 99, 0.12);
}

.language-switch button {
  min-width: 42px;
  min-height: 30px;
  padding: 0 9px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #777287;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease;
}

.language-switch button[aria-pressed="true"] {
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  box-shadow: 0 3px 12px rgba(71, 60, 104, 0.08);
}

.language-switch button:focus-visible,
.follower-link:focus-visible,
.profile-link:focus-visible {
  outline: 3px solid rgba(86, 119, 213, 0.35);
  outline-offset: 3px;
}

.hero {
  width: min(100% - 48px, 1060px);
  height: 100vh;
  height: 100dvh;
  margin: 0 auto;
  padding: 86px 0 62px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-copy {
  max-width: 940px;
}

.hero-copy,
.proof-and-action,
.footer-note {
  transition: opacity 420ms cubic-bezier(0.4, 0, 0.2, 1),
    transform 420ms cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

body.language-transitioning .hero-copy,
body.language-transitioning .proof-and-action,
body.language-transitioning .footer-note {
  opacity: 0;
  transform: translateY(7px);
}

.eyebrow {
  margin: 0 0 18px;
  color: #69627f;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
}

h1 {
  display: inline-block;
  margin: 0;
  background: linear-gradient(105deg, #292637 8%, #6e5b91 38%, #332e45 56%, #8971aa 76%, #292637 94%);
  background-size: 240% 100%;
  background-clip: text;
  color: transparent;
  font-family: "Nunito Sans", var(--display-font);
  font-size: 92px;
  font-weight: 680;
  line-height: 1.12;
  padding: 0.04em 0 0.1em;
  text-shadow: 0 12px 42px rgba(78, 64, 114, 0.1);
  animation: text-gloss 8s ease-in-out infinite;
}

.tagline {
  margin: 24px 0 0;
  background: linear-gradient(100deg, #3d394d 12%, #75638f 43%, #454052 58%, #927aaa 78%, #3d394d 92%);
  background-size: 230% 100%;
  background-clip: text;
  color: transparent;
  font-size: 29px;
  font-weight: 430;
  line-height: 1.3;
  animation: text-gloss 10s ease-in-out 0.8s infinite;
}

@keyframes text-gloss {
  0%,
  18% {
    background-position: 100% 50%;
  }
  60%,
  100% {
    background-position: 0% 50%;
  }
}

.capabilities {
  max-width: 860px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: 16px;
  font-weight: 450;
  line-height: 1.65;
}

.capabilities span {
  margin: 0 7px;
  color: #9d91bd;
}

.proof-and-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 19px;
  margin-top: 44px;
}

.follower-link {
  display: inline-flex;
  width: 190px;
  height: 62px;
  flex: 0 0 auto;
  align-items: center;
  gap: 12px;
  padding: 9px 16px 9px 10px;
  border: 1px solid rgba(68, 60, 92, 0.13);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 14px 45px rgba(74, 64, 107, 0.1);
  color: inherit;
  text-decoration: none;
  backdrop-filter: blur(18px);
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.follower-link:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.66);
  box-shadow: 0 18px 52px rgba(74, 64, 107, 0.14);
}

.follower-link img {
  display: block;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  background: rgba(255, 255, 255, 0.65);
}

.follower-copy {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
  white-space: nowrap;
}

.follower-copy strong {
  color: #363047;
  font-size: 18px;
  font-weight: 650;
  line-height: 1.1;
}

.follower-copy span {
  color: #716b80;
  font-size: 12px;
  font-weight: 400;
}

.profile-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding-bottom: 5px;
  color: #423a5c;
  font-size: 14px;
  font-weight: 550;
  text-decoration: none;
}

.profile-link::after {
  content: "";
  position: absolute;
  right: 4%;
  bottom: 0;
  left: 4%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(66, 58, 92, 0.42), transparent);
  opacity: 0;
  transform: scaleX(0.55);
  transition: opacity 220ms ease, transform 220ms ease;
}

.profile-link:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.bilibili-logo {
  display: block;
  width: auto;
  height: 15px;
}

.footer-note {
  position: fixed;
  right: 0;
  bottom: max(24px, env(safe-area-inset-bottom));
  left: 0;
  margin: 0;
  color: rgba(69, 63, 86, 0.56);
  font-size: 11px;
  font-weight: 400;
  text-align: center;
}

@media (max-width: 700px) {
  .site-header {
    padding-top: max(18px, env(safe-area-inset-top));
    padding-right: max(18px, env(safe-area-inset-right));
    padding-left: max(18px, env(safe-area-inset-left));
  }

  .hero {
    width: min(100% - 34px, 560px);
    padding-top: 78px;
    padding-bottom: 54px;
  }

  .eyebrow {
    margin-bottom: 14px;
    font-size: 11px;
  }

  h1 {
    font-size: 54px;
  }

  .tagline {
    margin-top: 18px;
    font-size: 22px;
  }

  .capabilities {
    max-width: 420px;
    margin-top: 17px;
    font-size: 14px;
    line-height: 1.75;
  }

  .capabilities span {
    margin: 0 3px;
  }

  .proof-and-action {
    gap: 16px;
    margin-top: 32px;
  }

  .footer-note {
    bottom: max(16px, env(safe-area-inset-bottom));
  }
}

@media (max-height: 650px) {
  .hero {
    padding-top: 68px;
    padding-bottom: 42px;
  }

  .eyebrow {
    margin-bottom: 10px;
  }

  h1 {
    font-size: 48px;
  }

  .tagline {
    margin-top: 13px;
    font-size: 19px;
  }

  .capabilities {
    margin-top: 11px;
    font-size: 13px;
  }

  .proof-and-action {
    gap: 12px;
    margin-top: 22px;
  }

  .follower-link {
    height: 54px;
    padding-top: 6px;
    padding-bottom: 6px;
  }

  .follower-link img {
    width: 38px;
    height: 38px;
  }

  .footer-note {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}