* {
  box-sizing: border-box;
}

:root {
  color-scheme: dark;
  --bg: #05090f;
  --bg-deep: #02050a;
  --text: #edf4fb;
  --muted: #8e9caf;
  --subtle: #566579;
  --line: rgba(154, 178, 204, 0.16);
  --line-strong: rgba(154, 178, 204, 0.26);
  --cyan: #72d8ff;
  --violet: #9d86ff;
  --pointer-x: 0px;
  --pointer-y: 0px;
  --pointer-x-soft: 0px;
  --pointer-y-soft: 0px;
}

html {
  min-height: 100%;
  background: var(--bg-deep);
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 16% 18%, rgba(54, 178, 255, 0.08), transparent 30%),
    radial-gradient(circle at 86% 72%, rgba(129, 89, 255, 0.07), transparent 34%),
    linear-gradient(145deg, #07121d 0%, #050a11 48%, #03060b 100%);
  font-family:
    Inter,
    "Segoe UI",
    "PingFang SC",
    "Microsoft YaHei",
    system-ui,
    sans-serif;
}

a {
  color: inherit;
}

.intro {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 50%, rgba(62, 155, 255, 0.06), transparent 28%),
    #02050a;
  transition:
    opacity 620ms cubic-bezier(0.22, 1, 0.36, 1),
    visibility 620ms cubic-bezier(0.22, 1, 0.36, 1);
}

.intro::before,
.intro::after {
  content: "";
  position: absolute;
  width: 42vw;
  aspect-ratio: 1;
  border: 1px solid rgba(126, 174, 215, 0.08);
  border-radius: 50%;
}

.intro::before {
  top: -25vw;
  left: -14vw;
}

.intro::after {
  right: -18vw;
  bottom: -28vw;
}

.intro.is-leaving {
  opacity: 0;
  visibility: hidden;
}

.intro-wordmark {
  position: relative;
  width: max-content;
  max-width: calc(100vw - 48px);
  padding: 24px 14px;
}

.intro-text {
  display: block;
  clip-path: inset(0 100% 0 0);
  color: #f4f7fb;
  font-family:
    "Segoe Script",
    "Bradley Hand",
    "Brush Script MT",
    "Lucida Handwriting",
    cursive;
  font-size: clamp(2.5rem, 7vw, 6.8rem);
  font-style: italic;
  font-weight: 500;
  letter-spacing: 0.035em;
  line-height: 1;
  white-space: nowrap;
  text-shadow:
    0 0 22px rgba(135, 200, 255, 0.12),
    0 0 60px rgba(118, 133, 255, 0.08);
  animation: writeReveal 1850ms cubic-bezier(0.16, 1, 0.3, 1) 260ms forwards;
}

.intro-sweep {
  position: absolute;
  top: 22%;
  bottom: 22%;
  left: 14px;
  width: 1px;
  opacity: 0;
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(208, 236, 255, 0.92),
    transparent
  );
  box-shadow:
    0 0 12px rgba(114, 216, 255, 0.7),
    0 0 28px rgba(157, 134, 255, 0.42);
  animation: sweepPen 1850ms cubic-bezier(0.16, 1, 0.3, 1) 260ms forwards;
}

@keyframes writeReveal {
  from {
    clip-path: inset(0 100% 0 0);
  }

  to {
    clip-path: inset(0 0 0 0);
  }
}

@keyframes sweepPen {
  0% {
    opacity: 0;
    transform: translateX(0);
  }

  8% {
    opacity: 1;
  }

  92% {
    opacity: 0.85;
  }

  100% {
    opacity: 0;
    transform: translateX(calc(100% + min(72vw, 960px)));
  }
}

.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.ambient-glow {
  position: absolute;
  width: 44vw;
  min-width: 420px;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.32;
  will-change: transform;
}

.ambient-glow--cyan {
  top: -20vw;
  left: -12vw;
  background: radial-gradient(circle, rgba(42, 187, 255, 0.17), transparent 66%);
  transform: translate3d(var(--pointer-x-soft), var(--pointer-y-soft), 0);
  animation: cyanDrift 18s ease-in-out infinite alternate;
}

.ambient-glow--violet {
  right: -17vw;
  bottom: -23vw;
  background: radial-gradient(circle, rgba(118, 83, 255, 0.14), transparent 68%);
  transform: translate3d(var(--pointer-x), var(--pointer-y), 0);
  animation: violetDrift 22s ease-in-out infinite alternate;
}

.ambient-grid {
  position: absolute;
  inset: 0;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(174, 200, 226, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(174, 200, 226, 0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at 67% 44%, black 0%, transparent 62%);
}

@keyframes cyanDrift {
  from {
    margin-top: -18px;
    margin-left: -12px;
  }

  to {
    margin-top: 24px;
    margin-left: 34px;
  }
}

@keyframes violetDrift {
  from {
    margin-right: -22px;
    margin-bottom: -12px;
  }

  to {
    margin-right: 32px;
    margin-bottom: 26px;
  }
}

.site-shell {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 780ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 780ms cubic-bezier(0.16, 1, 0.3, 1);
}

body.intro-complete .site-shell {
  opacity: 1;
  transform: translateY(0);
}

.topbar {
  width: min(1500px, calc(100% - 64px));
  margin: 0 auto;
  padding: 28px 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-name {
  color: #dce9f5;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.22em;
  text-decoration: none;
}

.topbar-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #78899b;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #63e0aa;
  box-shadow: 0 0 14px rgba(99, 224, 170, 0.52);
}

.hero {
  position: relative;
  width: min(1500px, calc(100% - 64px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  grid-template-rows: 1fr auto;
  gap: 40px 48px;
  align-items: center;
  padding: 72px 0 46px;
}

.hero-copy {
  position: relative;
  z-index: 2;
  align-self: center;
  max-width: 860px;
}

.eyebrow {
  margin: 0 0 24px;
  color: #678096;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
}

h1 {
  margin: 0;
  display: flex;
  flex-direction: column;
  width: max-content;
  max-width: 100%;
  font-size: clamp(5rem, 10.5vw, 10.5rem);
  font-weight: 630;
  letter-spacing: -0.075em;
  line-height: 0.78;
}

.hero-title-accent {
  margin-left: 0.72em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(224, 237, 248, 0.52);
}

.hero-lead {
  max-width: 660px;
  margin: 42px 0 0;
  color: #9cabb9;
  font-size: clamp(1rem, 1.45vw, 1.18rem);
  line-height: 1.95;
  letter-spacing: 0.01em;
}

.hero-modes {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: 34px;
  color: #bfd4e6;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mode-divider {
  width: 18px;
  height: 1px;
  background: linear-gradient(90deg, rgba(114, 216, 255, 0.6), rgba(157, 134, 255, 0.34));
}

.portal-stage {
  position: relative;
  justify-self: end;
  width: min(42vw, 610px);
  aspect-ratio: 1;
  border: 1px solid rgba(144, 174, 201, 0.11);
  border-radius: 50%;
  transform: translate3d(var(--pointer-x), var(--pointer-y), 0);
  transition: transform 180ms ease-out;
  will-change: transform;
}

.portal-stage::before,
.portal-stage::after {
  content: "";
  position: absolute;
  inset: 14%;
  border-radius: 50%;
}

.portal-stage::before {
  border: 1px dashed rgba(105, 196, 236, 0.13);
  animation: slowSpin 34s linear infinite;
}

.portal-stage::after {
  inset: 33%;
  border: 1px solid rgba(166, 139, 255, 0.15);
  box-shadow:
    0 0 100px rgba(73, 174, 255, 0.06),
    inset 0 0 64px rgba(116, 89, 255, 0.04);
}

.portal-orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(128, 161, 190, 0.11);
}

.portal-orbit--outer {
  inset: 4%;
}

.portal-orbit--middle {
  inset: 23%;
  border-color: rgba(114, 216, 255, 0.14);
  animation: slowSpin 27s linear infinite reverse;
}

.portal-orbit--inner {
  inset: 39%;
  border-color: rgba(157, 134, 255, 0.18);
}

.portal-core {
  position: absolute;
  inset: 46%;
  border-radius: 50%;
  background: #b8e9ff;
  box-shadow:
    0 0 16px rgba(114, 216, 255, 0.72),
    0 0 46px rgba(114, 216, 255, 0.28),
    0 0 100px rgba(157, 134, 255, 0.16);
  animation: corePulse 3.8s ease-in-out infinite;
}

.portal-index,
.portal-caption {
  position: absolute;
  color: #63768a;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 9px;
  letter-spacing: 0.14em;
}

.portal-index {
  top: 12%;
  right: 2%;
}

.portal-caption {
  right: 4%;
  bottom: 13%;
}

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

@keyframes corePulse {
  0%,
  100% {
    transform: scale(0.76);
    opacity: 0.46;
  }

  50% {
    transform: scale(1.08);
    opacity: 0.92;
  }
}

.region-status {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: max-content minmax(80px, 1fr) max-content;
  align-items: end;
  gap: 20px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.status-block {
  display: grid;
  gap: 8px;
}

.status-block--right {
  text-align: right;
}

.status-label {
  color: #56697d;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 9px;
  letter-spacing: 0.14em;
}

.status-block strong {
  color: #a9bdce;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.03em;
}

.status-rule {
  height: 1px;
  margin-bottom: 5px;
  background: linear-gradient(
    90deg,
    rgba(114, 216, 255, 0.3),
    rgba(157, 134, 255, 0.2),
    transparent
  );
}

.site-footer {
  width: min(1500px, calc(100% - 64px));
  margin: 0 auto;
  padding: 0 0 24px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  color: #526477;
  font-size: 11px;
}

.footer-note {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-version {
  color: #394a5b;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 9px;
  letter-spacing: 0.12em;
}

.beian {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.beian a {
  color: inherit;
  text-decoration: none;
  transition: color 160ms ease;
}

.beian a:hover,
.beian a:focus-visible {
  color: #91a9be;
}

.beian-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.beian-link img {
  display: block;
  width: auto;
  height: 16px;
}

.footer-divider {
  color: #344657;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    align-content: center;
    gap: 32px;
    padding-top: 56px;
  }

  .portal-stage {
    position: absolute;
    z-index: 0;
    top: 50%;
    right: -24vw;
    width: min(80vw, 620px);
    opacity: 0.58;
    transform:
      translate3d(var(--pointer-x), var(--pointer-y), 0)
      translateY(-50%);
  }

  .hero-copy {
    padding-right: 8vw;
  }

  .region-status {
    position: relative;
    z-index: 2;
  }
}

@media (max-width: 720px) {
  .topbar,
  .hero,
  .site-footer {
    width: min(100% - 36px, 1500px);
  }

  .topbar {
    padding-top: 22px;
  }

  .hero {
    padding: 72px 0 34px;
  }

  h1 {
    font-size: clamp(4.3rem, 22vw, 7.6rem);
  }

  .hero-title-accent {
    margin-left: 0.34em;
  }

  .hero-lead {
    margin-top: 36px;
    max-width: 92%;
    font-size: 0.98rem;
  }

  .portal-stage {
    top: 43%;
    right: -54vw;
    width: 118vw;
    opacity: 0.4;
  }

  .region-status {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .status-rule {
    display: none;
  }

  .status-block--right {
    text-align: left;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-bottom: 18px;
  }

  .beian {
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .topbar-status {
    display: none;
  }

  .eyebrow {
    font-size: 9px;
  }

  h1 {
    line-height: 0.84;
  }

  .hero-modes {
    gap: 9px;
    font-size: 9px;
  }

  .mode-divider {
    width: 12px;
  }

  .intro-text {
    font-size: clamp(2.2rem, 12vw, 4rem);
    letter-spacing: 0;
  }

  .footer-note {
    width: 100%;
    justify-content: space-between;
  }
}

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

  .intro-text {
    clip-path: none;
  }

  .intro-sweep {
    display: none;
  }
}