:root {
  color-scheme: dark;
  --ink: #f8fbff;
  --soft: rgba(232, 244, 250, 0.72);
  --quiet: rgba(232, 244, 250, 0.52);
  --line: rgba(255, 255, 255, 0.13);
  --glass: rgba(5, 12, 22, 0.68);
  --cyan: #20bde9;
  --gold: #f0c44d;
  --green: #5be3a3;
  --red: #ff5d78;
  --black: #04070d;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 14% 9%, rgba(32, 189, 233, 0.18), transparent 26rem),
    radial-gradient(circle at 86% 26%, rgba(240, 196, 77, 0.15), transparent 23rem),
    linear-gradient(180deg, #060914 0%, #080b12 48%, #030509 100%);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Microsoft YaHei", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

.page {
  position: relative;
  overflow: hidden;
}

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  padding: 18px clamp(18px, 5vw, 64px) 34px;
  isolation: isolate;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.055), transparent 12%, transparent 88%, rgba(255, 255, 255, 0.035)),
    repeating-linear-gradient(180deg, transparent 0 10px, rgba(255, 255, 255, 0.07) 11px, transparent 12px);
  opacity: 0.46;
  mix-blend-mode: screen;
}

.chain-field {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  opacity: 0.7;
}

.hero-glow {
  position: absolute;
  z-index: 0;
  width: 48vmax;
  height: 48vmax;
  border-radius: 50%;
  filter: blur(58px);
  opacity: 0.28;
}

.hero-glow-a {
  top: -18vmax;
  left: -22vmax;
  background: var(--cyan);
}

.hero-glow-b {
  right: -25vmax;
  bottom: -20vmax;
  background: var(--gold);
}

.topbar {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100%, 1120px);
  margin: 0 auto;
  min-height: 46px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: rgba(248, 251, 255, 0.9);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 50%;
}

.nav-link {
  min-height: 34px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--soft);
  font-size: 0.8rem;
  backdrop-filter: blur(14px);
}

.hero-inner {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(260px, 440px) minmax(300px, 560px);
  align-items: center;
  gap: clamp(24px, 6vw, 84px);
  width: min(100%, 1120px);
  min-height: calc(100svh - 112px);
  margin: 0 auto;
  padding: clamp(18px, 5vh, 64px) 0 0;
}

.orbit-stage {
  position: relative;
  display: grid;
  place-items: center;
  width: min(76vw, 370px);
  aspect-ratio: 1;
  margin: 0 auto;
  order: 2;
}

.logo-rotor {
  position: relative;
  z-index: 4;
  display: grid;
  place-items: center;
  width: 52%;
  height: 52%;
  transform-origin: 50% 50%;
  will-change: transform;
}

.logo-rotor.is-spinning {
  animation: logo-spin 24s linear infinite;
}

.hero-logo {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: contain;
  transform-origin: 50% 50%;
  will-change: transform;
  filter: drop-shadow(0 24px 32px rgba(0, 0, 0, 0.56));
}

@keyframes logo-spin {
  to {
    transform: rotate(360deg);
  }
}

.orbit-ring {
  position: absolute;
  border: 1px solid rgba(91, 227, 163, 0.56);
  border-radius: 50%;
  inset: 0;
}

.particle-track {
  position: absolute;
  z-index: 2;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.82;
  background:
    repeating-conic-gradient(
      from 8deg,
      rgba(255, 255, 255, 0.58) 0deg 1.5deg,
      transparent 1.5deg 8deg
    );
  mask: radial-gradient(circle, transparent calc(50% - 1px), #000 calc(50% - 1px), #000 calc(50% + 1px), transparent calc(50% + 1px));
  -webkit-mask: radial-gradient(circle, transparent calc(50% - 1px), #000 calc(50% - 1px), #000 calc(50% + 1px), transparent calc(50% + 1px));
}

.track-inner {
  inset: 13%;
  background:
    repeating-conic-gradient(
      from -14deg,
      rgba(240, 196, 77, 0.62) 0deg 1.5deg,
      transparent 1.5deg 8deg
    );
}

.track-outer {
  inset: 0;
  background:
    repeating-conic-gradient(
      from 12deg,
      rgba(32, 189, 233, 0.56) 0deg 1.5deg,
      transparent 1.5deg 9deg
    );
}

.orbit-particle {
  position: absolute;
  z-index: 3;
  left: 50%;
  top: 50%;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  opacity: 0;
  transform: translate(-50%, -50%);
  will-change: transform, opacity;
  transition: opacity 720ms ease;
}

.orbit-stage.particles-live .orbit-particle {
  opacity: 1;
}

.orbit-particle::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: currentColor;
}

.orbit-particle::before {
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: inherit;
  background: currentColor;
  filter: blur(12px);
  opacity: 0.45;
}

.particle-blue {
  color: var(--cyan);
}

.particle-gold {
  color: var(--gold);
}

.particle-a,
.particle-c {
  background: var(--cyan);
  box-shadow: 0 0 20px rgba(32, 189, 233, 0.95);
}

.particle-b,
.particle-d {
  background: var(--gold);
  box-shadow: 0 0 20px rgba(240, 196, 77, 0.95);
}

.ring-two {
  inset: 13%;
  border-color: rgba(240, 196, 77, 0.58);
}

.ring-three {
  inset: 28%;
  border-color: rgba(255, 255, 255, 0.22);
}

.hero-copy {
  order: 1;
  max-width: 610px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.headline {
  max-width: 670px;
  margin: 0;
  font-size: clamp(3.15rem, 9vw, 6.5rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.lead {
  max-width: 570px;
  margin: 22px 0 0;
  color: var(--soft);
  font-size: clamp(1rem, 2.6vw, 1.22rem);
  line-height: 1.75;
}

.split-word {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
}

.split-word > span {
  display: inline-block;
}

.pop-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  column-gap: 0.02em;
  row-gap: 0.04em;
}

.title-char {
  display: inline-block;
  overflow: visible;
  perspective: 400px;
}

.title-char > span {
  display: inline-block;
  transform-origin: 50% 86%;
  will-change: transform, opacity, filter;
}

.title-char.is-danger > span {
  background: linear-gradient(135deg, #ff5d78 0%, #f0c44d 72%);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.hero-metrics {
  grid-column: 1 / -1;
  order: 3;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  width: min(100%, 680px);
}

.hero-metrics div,
.principle-card,
.proof,
.timeline-item,
.closing {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--glass);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 22px 70px rgba(0, 0, 0, 0.26);
  backdrop-filter: blur(18px);
}

.hero-metrics div {
  padding: 16px;
}

.hero-metrics span {
  display: block;
  color: var(--quiet);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.hero-metrics strong {
  display: block;
  margin-top: 7px;
  font-size: clamp(1.2rem, 4vw, 2rem);
}

.manifest,
.principles,
.proof,
.timeline,
.closing {
  position: relative;
  z-index: 2;
  width: min(calc(100% - 36px), 1040px);
  margin: 0 auto;
}

.manifest {
  padding: clamp(72px, 14vw, 140px) 0 clamp(34px, 7vw, 78px);
}

.manifest h2,
.proof h2,
.closing h2 {
  max-width: 880px;
  margin: 0;
  font-size: clamp(2rem, 6vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.manifest-title span {
  display: block;
  overflow: hidden;
}

.manifest p:not(.section-kicker),
.proof p,
.timeline-item p,
.closing p {
  max-width: 720px;
  color: var(--soft);
  font-size: clamp(1rem, 2.4vw, 1.18rem);
  line-height: 1.85;
}

.principles {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: clamp(58px, 10vw, 110px);
}

.principles-chain-line {
  position: absolute;
  top: 38px;
  left: 8%;
  right: 8%;
  z-index: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(91, 227, 163, 0.72), rgba(240, 196, 77, 0.68), transparent);
  box-shadow: 0 0 24px rgba(91, 227, 163, 0.32);
  opacity: 0.28;
  transform: scaleX(0);
  transform-origin: left center;
}

.principle-card {
  position: relative;
  z-index: 1;
  overflow: hidden;
  min-height: 245px;
  padding: 22px;
  transform-origin: 50% 70%;
  will-change: transform, opacity, filter;
  transition:
    border-color 260ms ease,
    box-shadow 260ms ease,
    filter 260ms ease;
}

.principle-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: inherit;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.16), transparent 24%),
    radial-gradient(circle at 24% 14%, rgba(91, 227, 163, 0.18), transparent 34%);
  opacity: 0;
  transition: opacity 260ms ease;
}

.principle-card > *:not(.card-glow):not(.card-scan) {
  position: relative;
  z-index: 2;
}

.card-glow,
.card-scan {
  position: absolute;
  pointer-events: none;
}

.card-glow {
  inset: -26%;
  z-index: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(32, 189, 233, 0.28), transparent 45%),
    radial-gradient(circle at 60% 40%, rgba(240, 196, 77, 0.18), transparent 38%);
  filter: blur(18px);
  opacity: 0;
  transform: translate3d(-18%, -18%, 0) scale(0.74);
}

.card-scan {
  top: -30%;
  bottom: -30%;
  left: -45%;
  z-index: 3;
  width: 36%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.46), transparent);
  opacity: 0;
  transform: rotate(18deg) translateX(-80%);
  mix-blend-mode: screen;
}

.principle-card.is-active {
  border-color: rgba(91, 227, 163, 0.62);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 24px 80px rgba(32, 189, 233, 0.16),
    0 0 0 1px rgba(91, 227, 163, 0.08);
}

.principle-card.is-active::before {
  opacity: 1;
}

.principle-card.is-active .card-index {
  box-shadow:
    0 0 0 5px rgba(91, 227, 163, 0.1),
    0 0 26px rgba(240, 196, 77, 0.42);
}

.principle-card.is-locked {
  border-color: rgba(255, 255, 255, 0.1);
  filter: saturate(0.82) brightness(0.88);
}

.card-index {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: #081018;
  font-size: 0.82rem;
  font-weight: 950;
  background: linear-gradient(135deg, var(--gold), var(--green));
  transition:
    box-shadow 260ms ease,
    transform 260ms ease;
}

.principle-card h3,
.timeline-item h3 {
  margin: 34px 0 12px;
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  line-height: 1.1;
}

.principle-card p {
  margin: 0;
  color: var(--soft);
  font-size: 0.98rem;
  line-height: 1.75;
}

.proof {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(260px, 400px);
  gap: clamp(24px, 5vw, 72px);
  align-items: center;
  padding: clamp(24px, 5vw, 48px);
  margin-bottom: clamp(64px, 12vw, 120px);
  background:
    radial-gradient(circle at 82% 18%, rgba(91, 227, 163, 0.18), transparent 24rem),
    var(--glass);
}

.proof-stack {
  display: grid;
  gap: 10px;
}

.proof-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 62px;
  padding: 0 17px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
}

.proof-row span {
  color: var(--quiet);
  font-size: 0.88rem;
}

.proof-row strong {
  color: var(--green);
  font-size: 1rem;
}

.timeline {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(64px, 12vw, 130px);
}

.timeline-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 21px;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(91, 227, 163, 0.7), transparent);
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 18px;
  align-items: start;
  padding: 22px;
}

.timeline-item > span {
  position: relative;
  z-index: 2;
  width: 16px;
  height: 16px;
  margin-top: 10px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 26px rgba(240, 196, 77, 0.82);
}

.timeline-item h3 {
  margin-top: 0;
}

.timeline-item p {
  margin: 0;
}

.closing {
  display: grid;
  place-items: center;
  min-height: 72svh;
  margin-bottom: 28px;
  padding: clamp(32px, 7vw, 80px) 24px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 34%, rgba(240, 196, 77, 0.18), transparent 22rem),
    radial-gradient(circle at 50% 68%, rgba(32, 189, 233, 0.14), transparent 26rem),
    var(--glass);
}

.closing img {
  width: 86px;
  height: 86px;
  border-radius: 50%;
  object-fit: contain;
}

.closing p {
  margin: 24px 0 0;
}

.closing h2 {
  max-width: 760px;
  margin-top: 12px;
}

@media (max-width: 760px) {
  .hero {
    padding-right: 18px;
    padding-left: 18px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 10px;
    min-height: auto;
    padding-top: 20px;
  }

  .orbit-stage {
    order: 1;
    width: min(74vw, 270px);
  }

  .hero-copy {
    order: 2;
    margin-top: 20px;
  }

  .headline {
    font-size: clamp(3.05rem, 15vw, 4.7rem);
    line-height: 1.02;
  }

  .hero-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 20px;
  }

  .hero-metrics div {
    padding: 13px 10px;
  }

  .principles,
  .proof {
    grid-template-columns: 1fr;
  }

  .principles {
    gap: 14px;
  }

  .principles-chain-line {
    top: 18px;
    bottom: 18px;
    left: 40px;
    right: auto;
    width: 1px;
    height: auto;
    background: linear-gradient(180deg, transparent, rgba(91, 227, 163, 0.72), rgba(240, 196, 77, 0.68), transparent);
    transform: scaleY(0);
    transform-origin: top center;
  }

  .principle-card {
    min-height: auto;
  }
}

@media (max-width: 430px) {
  .brand span {
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .hero {
    padding-top: 14px;
  }

  .headline {
    font-size: 3.25rem;
    line-height: 1.03;
  }

  .manifest h2,
  .proof h2,
  .closing h2 {
    font-size: 1.85rem;
    line-height: 1.14;
  }

  .lead {
    font-size: 0.98rem;
  }

  .hero-metrics strong {
    font-size: 1.05rem;
  }

  .hero-metrics span {
    font-size: 0.68rem;
  }

  .manifest,
  .principles,
  .proof,
  .timeline,
  .closing {
    width: min(calc(100% - 24px), 1040px);
  }

  .proof {
    padding: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .principles-chain-line,
  .card-glow,
  .card-scan {
    display: none;
  }

  .principle-card {
    transform: none !important;
    opacity: 1 !important;
    filter: none !important;
  }
}

@media (max-width: 360px) {
  .topbar {
    min-height: 40px;
  }

  .brand {
    gap: 8px;
    font-size: 0.68rem;
  }

  .brand img {
    width: 30px;
    height: 30px;
  }

  .nav-link {
    min-height: 32px;
    padding: 7px 11px;
  }

  .orbit-stage {
    width: min(70vw, 238px);
  }

  .hero-copy {
    margin-top: 16px;
  }

  .headline {
    max-width: 4.35em;
    font-size: 2.85rem;
    line-height: 1.08;
  }

  .lead {
    font-size: 0.92rem;
    line-height: 1.68;
  }

  .hero-metrics {
    gap: 8px;
  }

  .hero-metrics div {
    padding: 11px 8px;
  }

  .hero-metrics strong {
    font-size: 0.98rem;
  }

  .manifest h2,
  .proof h2,
  .closing h2 {
    font-size: 1.72rem;
  }
}