:root {
  --navy: #050a18;
  --navy-2: #0b1736;
  --panel: #101a33;
  --line: rgba(161, 202, 255, 0.17);
  --text: #f6f8ff;
  --muted: #9aa9c6;
  --cyan: #32ddff;
  --blue: #5785ff;
  --gold: #f6c968;
  --white: #fff;
  --max: 1180px;
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--navy);
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 77% 8%, rgba(65, 116, 255, 0.2), transparent 27rem),
    radial-gradient(circle at 8% 33%, rgba(22, 210, 255, 0.08), transparent 24rem),
    var(--navy);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

.starfield {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.38;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.8) 0 1px, transparent 1.4px),
    radial-gradient(circle, rgba(88, 185, 255, 0.55) 0 1px, transparent 1.5px);
  background-position: 0 0, 31px 47px;
  background-size: 97px 97px, 151px 151px;
  mask-image: linear-gradient(to bottom, black 0, transparent 76%);
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 78px;
  padding: 0 max(24px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(5, 10, 24, 0.76);
  backdrop-filter: blur(18px);
}

.brand img {
  display: block;
  width: 148px;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 29px;
  font-size: 14px;
  color: #c6d1e8;
}

.site-nav a {
  transition: color 180ms ease;
}

.site-nav a:hover {
  color: var(--white);
}

.nav-cta {
  padding: 10px 18px;
  color: #06101f;
  font-weight: 700;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--cyan), #85edff);
  cursor: pointer;
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 12px 10px;
  border: 0;
  background: transparent;
}

.menu-button span {
  display: block;
  height: 1px;
  margin: 5px 0;
  background: white;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  min-height: 760px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 84px 24px 90px;
}

.hero::after {
  position: absolute;
  right: 20%;
  bottom: 50px;
  width: 260px;
  height: 100px;
  content: "";
  filter: blur(60px);
  background: rgba(31, 187, 255, 0.17);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.19em;
  text-transform: uppercase;
}

.eyebrow span {
  display: inline-block;
  width: 22px;
  height: 1px;
  margin-right: 10px;
  vertical-align: middle;
  background: currentColor;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.hero h1 {
  max-width: 680px;
  margin-bottom: 28px;
  font-size: clamp(54px, 6.8vw, 92px);
  font-weight: 760;
  line-height: 1.03;
  letter-spacing: -0.055em;
}

.hero h1 em {
  color: transparent;
  font-style: normal;
  background: linear-gradient(90deg, #fff 5%, #99eaff 56%, #799dff);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-lead {
  max-width: 580px;
  margin-bottom: 34px;
  color: #b8c4da;
  font-size: 17px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 750;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: #07101e;
  background: linear-gradient(135deg, #37ddff, #98efff);
  box-shadow: 0 13px 34px rgba(44, 212, 255, 0.17);
}

.button.ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.035);
}

.button.light {
  color: #07101e;
  background: white;
}

.button.full {
  width: 100%;
}

.microcopy {
  margin-top: 18px;
  color: #7484a2;
  font-size: 12px;
}

.identity-orbit {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 560px;
}

.orbit {
  position: absolute;
  border: 1px solid rgba(94, 182, 255, 0.19);
  border-radius: 50%;
  transform: rotate(-18deg);
}

.orbit::after {
  position: absolute;
  top: 21%;
  right: -4px;
  width: 8px;
  height: 8px;
  content: "";
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 18px var(--cyan);
}

.orbit-one {
  width: 530px;
  height: 330px;
}

.orbit-two {
  width: 415px;
  height: 520px;
  transform: rotate(36deg);
}

.identity-card {
  position: relative;
  z-index: 2;
  width: min(390px, 82vw);
  min-height: 530px;
  padding: 27px;
  overflow: hidden;
  border: 1px solid rgba(160, 219, 255, 0.3);
  border-radius: 28px;
  background:
    linear-gradient(155deg, rgba(50, 88, 151, 0.45), rgba(6, 12, 28, 0.92) 55%),
    var(--panel);
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.42),
    inset 0 0 80px rgba(61, 170, 255, 0.06);
  transform: perspective(900px) rotateY(-9deg) rotateX(4deg);
}

.identity-card::before {
  position: absolute;
  inset: -60% 50% auto -20%;
  width: 80%;
  height: 180%;
  content: "";
  transform: rotate(29deg);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.085), transparent);
}

.card-top,
.generated-header {
  display: flex;
  justify-content: space-between;
  color: #dcecff;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.status {
  color: #88efc2;
}

.status i {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 6px;
  border-radius: 50%;
  background: #54e7a7;
  box-shadow: 0 0 10px #54e7a7;
}

.planet-mark {
  position: relative;
  display: grid;
  place-items: center;
  height: 275px;
}

.planet {
  width: 148px;
  height: 148px;
  border: 1px solid rgba(197, 235, 255, 0.85);
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 30%, #d5f5ff 0, #438bc4 6%, #16385d 26%, #071122 65%),
    #0c294c;
  box-shadow:
    0 0 45px rgba(73, 195, 255, 0.42),
    inset -20px -16px 32px rgba(0, 0, 0, 0.6);
}

.ring {
  position: absolute;
  width: 244px;
  height: 64px;
  border: 4px solid rgba(165, 229, 255, 0.72);
  border-top-color: transparent;
  border-left-color: rgba(128, 198, 255, 0.34);
  border-radius: 50%;
  transform: rotate(-19deg);
  filter: drop-shadow(0 0 8px rgba(57, 198, 255, 0.7));
}

.id-number {
  margin-bottom: 12px;
  color: #d8f6ff;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.07em;
}

.id-name {
  color: #88a5c8;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.card-meta,
.generated-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: #617596;
  font-size: 9px;
  line-height: 1.8;
}

.card-meta b,
.generated-meta b {
  color: #c9dbf5;
  font-size: 11px;
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: 100%;
  padding: 19px max(24px, calc((100vw - var(--max)) / 2));
  color: #7687a6;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.018);
  font-size: 11px;
  letter-spacing: 0.13em;
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 125px 24px;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 60px;
}

.section-heading.centered {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-heading h2,
.crystal-copy h2,
.founding h2 {
  margin-bottom: 24px;
  font-size: clamp(37px, 4.5vw, 60px);
  line-height: 1.18;
  letter-spacing: -0.045em;
}

.section-heading > p:not(.eyebrow),
.crystal-copy > p,
.founding p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.about {
  padding-top: 150px;
}

.about-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 80px;
}

.about-copy {
  color: #aab8d0;
  font-size: 18px;
  line-height: 2;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}

.principles article {
  min-height: 230px;
  padding: 30px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.principles b,
.feature-index {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.principles h3,
.feature h3 {
  margin: 43px 0 12px;
  font-size: 20px;
}

.principles p,
.feature p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.gedid-section {
  max-width: none;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(13, 24, 51, 0.68), rgba(6, 11, 27, 0.2));
}

.gedid-section > * {
  max-width: var(--max);
  margin-right: auto;
  margin-left: auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.feature {
  min-height: 250px;
  padding: 28px;
  background: #0a1125;
}

.feature h3 {
  margin-top: 55px;
}

.gedid-demo {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 70px;
  margin-top: 80px;
  padding: 55px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 30px;
  background:
    radial-gradient(circle at 80% 30%, rgba(52, 161, 255, 0.2), transparent 18rem),
    #091126;
}

.demo-copy h3 {
  margin-bottom: 18px;
  font-size: 36px;
  line-height: 1.25;
}

.demo-copy > p:not(.eyebrow) {
  margin-bottom: 28px;
  color: var(--muted);
  line-height: 1.85;
}

.gedid-demo img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  object-position: top;
  border-radius: 20px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
}

.crystal-section {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 90px;
}

.crystal-visual {
  position: relative;
}

.crystal-visual img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  border-radius: 30px;
  box-shadow: 0 35px 90px rgba(0, 0, 0, 0.55);
}

.image-glow {
  position: absolute;
  inset: 13% 15%;
  filter: blur(70px);
  background: rgba(23, 164, 255, 0.34);
}

.concept-badge {
  position: absolute;
  z-index: 2;
  right: 16px;
  bottom: 16px;
  padding: 8px 12px;
  color: #c5d2e7;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  background: rgba(5, 10, 24, 0.78);
  font-size: 10px;
}

.clean-list {
  margin: 35px 0;
  padding: 0;
  list-style: none;
}

.clean-list li {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 15px 0;
  color: #d7e0ef;
  border-bottom: 1px solid var(--line);
}

.clean-list span {
  color: var(--cyan);
  font-size: 11px;
}

.price-line {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 26px;
  color: var(--muted);
}

.price-line strong {
  color: white;
  font-size: 38px;
}

.price-line small {
  font-size: 14px;
}

.archive-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.archive-card {
  min-height: 275px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(19, 31, 61, 0.72), rgba(8, 14, 31, 0.76));
}

.tag {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
}

.tag.fact {
  color: #85efbd;
  background: rgba(41, 206, 130, 0.12);
}

.tag.claim {
  color: #ffd57e;
  background: rgba(255, 185, 66, 0.12);
}

.tag.theory {
  color: #9bdcff;
  background: rgba(57, 177, 255, 0.12);
}

.tag.fiction {
  color: #d6b2ff;
  background: rgba(166, 89, 255, 0.12);
}

.archive-card h3 {
  margin: 46px 0 13px;
  font-size: 24px;
}

.archive-card p {
  color: var(--muted);
  line-height: 1.8;
}

.archive-card a {
  color: #cdeaff;
  font-size: 13px;
}

.archive-card a span {
  margin-left: 6px;
  color: var(--cyan);
}

.founding {
  max-width: none;
  padding: 130px 24px;
  text-align: center;
  background:
    linear-gradient(110deg, rgba(13, 65, 109, 0.9), rgba(29, 44, 105, 0.94)),
    var(--navy-2);
}

.founding-inner {
  max-width: 760px;
  margin: 0 auto;
}

.founding p:not(.eyebrow) {
  margin-bottom: 34px;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto 1.2fr;
  gap: 70px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 70px 24px;
  color: #7e8da8;
  font-size: 12px;
}

.footer-brand img {
  width: 160px;
}

.footer-brand p {
  margin-top: 18px;
}

.footer-links {
  display: grid;
  align-content: start;
  gap: 13px;
  color: #c0cbdd;
}

.footer-legal {
  line-height: 1.75;
}

.disclaimer {
  color: #687895;
}

.modal {
  width: min(570px, calc(100vw - 28px));
  max-height: calc(100vh - 30px);
  padding: 38px;
  overflow: auto;
  color: var(--text);
  border: 1px solid rgba(142, 215, 255, 0.26);
  border-radius: 26px;
  background:
    radial-gradient(circle at top right, rgba(64, 168, 255, 0.17), transparent 18rem),
    #091126;
  box-shadow: 0 40px 110px rgba(0, 0, 0, 0.75);
}

.modal::backdrop {
  background: rgba(1, 4, 12, 0.82);
  backdrop-filter: blur(10px);
}

.modal h2 {
  margin-bottom: 12px;
  font-size: 34px;
}

.modal > p,
.modal-step > p:not(.eyebrow) {
  color: var(--muted);
  line-height: 1.75;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 36px;
  height: 36px;
  color: #b7c6df;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
}

form {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

label {
  display: grid;
  gap: 8px;
  color: #dce5f4;
  font-size: 13px;
  font-weight: 700;
}

input,
textarea,
select {
  width: 100%;
  padding: 14px 15px;
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 13px;
  outline: 0;
  background: rgba(255, 255, 255, 0.045);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(50, 221, 255, 0.08);
}

textarea {
  min-height: 105px;
  resize: vertical;
}

select option {
  color: #111;
}

.consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #91a0ba;
  font-weight: 400;
  line-height: 1.6;
}

.consent input {
  width: auto;
  margin-top: 4px;
}

.generated-card {
  margin: 25px 0 18px;
  padding: 25px;
  border: 1px solid rgba(134, 218, 255, 0.3);
  border-radius: 22px;
  background:
    radial-gradient(circle at 50% 30%, rgba(40, 167, 255, 0.25), transparent 11rem),
    linear-gradient(150deg, #162951, #080e1e 64%);
}

.generated-orb {
  width: 120px;
  height: 120px;
  margin: 42px auto;
  border: 1px solid #bdeaff;
  border-radius: 50%;
  background: radial-gradient(circle at 34% 29%, #d9f8ff, #3a8ec9 9%, #152f54 34%, #07111f 69%);
  box-shadow: 0 0 38px rgba(54, 196, 255, 0.4);
}

.generated-card > strong {
  display: block;
  color: #d9f8ff;
  font-size: 17px;
  letter-spacing: 0.06em;
}

.generated-card h3 {
  margin: 15px 0 9px;
  font-size: 24px;
}

.generated-card > p {
  color: #a7b6cf;
  line-height: 1.7;
}

.generated-meta {
  grid-template-columns: 1fr 1fr;
}

.demo-note,
.centered-copy {
  text-align: center;
}

.wechat-qr {
  display: block;
  width: min(230px, 70vw);
  margin: 28px auto 16px;
  border-radius: 18px;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

@media (max-width: 980px) {
  .hero,
  .crystal-section,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 90px;
  }

  .identity-orbit {
    min-height: 620px;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .crystal-section {
    gap: 60px;
  }

  .about-grid {
    gap: 35px;
  }

  .site-footer {
    grid-template-columns: 1fr 1fr;
  }

  .footer-legal {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .site-header {
    height: 66px;
    padding-right: 18px;
    padding-left: 18px;
  }

  .brand img {
    width: 126px;
  }

  .menu-button {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 66px;
    right: 12px;
    left: 12px;
    display: none;
    align-items: stretch;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(7, 14, 31, 0.98);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.45);
    flex-direction: column;
    gap: 18px;
  }

  .site-nav.open {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding: 85px 20px 50px;
  }

  .hero h1 {
    font-size: 52px;
  }

  .hero-lead {
    font-size: 15px;
  }

  .identity-orbit {
    min-height: 520px;
    transform: scale(0.9);
  }

  .orbit-one {
    width: 430px;
    height: 270px;
  }

  .orbit-two {
    width: 330px;
    height: 450px;
  }

  .signal-strip {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .section {
    padding: 90px 20px;
  }

  .section-heading {
    margin-bottom: 42px;
  }

  .principles,
  .feature-grid,
  .archive-grid,
  .gedid-demo {
    grid-template-columns: 1fr;
  }

  .principles article {
    min-height: auto;
  }

  .gedid-demo {
    gap: 38px;
    padding: 28px;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 35px;
    padding: 55px 20px;
  }

  .footer-legal {
    grid-column: auto;
  }

  .modal {
    padding: 30px 22px;
  }
}

@media (max-width: 430px) {
  .hero h1 {
    font-size: 45px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .button {
    width: 100%;
  }

  .identity-orbit {
    margin: -30px -15px;
    transform: scale(0.78);
  }

  .signal-strip {
    font-size: 9px;
  }
}