:root {
  --ink: #111820;
  --night: #07111b;
  --night-2: #0d1822;
  --gold: #d8ad68;
  --gold-soft: #f3d49a;
  --silver: #d9dde1;
  --mist: #f4f0e8;
  --paper: #fbfaf7;
  --line: rgba(17, 24, 32, 0.12);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  letter-spacing: 0;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(18px, 4vw, 56px);
  color: #fff;
  background: linear-gradient(180deg, rgba(5, 12, 19, 0.88), rgba(5, 12, 19, 0.2));
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: block;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(216, 173, 104, 0.75);
  border-radius: 50%;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.04);
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.45);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 16px;
}

.brand small {
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 11px;
  text-transform: uppercase;
}

.nav {
  display: flex;
  gap: 26px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.nav a:hover {
  color: var(--gold-soft);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.78fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding: 118px clamp(20px, 5vw, 72px) 72px;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 74% 28%, rgba(216, 173, 104, 0.18), transparent 25%),
    linear-gradient(125deg, #06101a 0%, #101a23 52%, #19232b 100%);
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 120px;
  background: linear-gradient(0deg, var(--paper), rgba(251, 250, 247, 0));
  pointer-events: none;
}

.hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 52px 52px;
}

.hero-content,
.hero-symbol {
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--gold-soft);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow.dark {
  color: #9a6c2e;
}

.hero h1 {
  margin: 0;
  font-size: clamp(48px, 8vw, 104px);
  line-height: 1;
  font-weight: 800;
}

.hero-subtitle {
  margin: 16px 0 0;
  color: var(--gold-soft);
  font-size: clamp(20px, 3vw, 38px);
  font-weight: 300;
  text-transform: uppercase;
}

.hero-copy {
  max-width: 680px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.8;
}

.hero-copy strong {
  color: var(--gold-soft);
  font-weight: 800;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 4px;
  font-weight: 700;
}

.button.primary {
  border-color: transparent;
  color: #121820;
  background: linear-gradient(135deg, var(--gold-soft), var(--gold));
}

.button.secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.hero-symbol {
  min-height: 430px;
  border: 1px solid rgba(216, 173, 104, 0.32);
  border-radius: 8px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.38);
  overflow: hidden;
}

.hero-building {
  display: block;
  position: relative;
  aspect-ratio: 4 / 3;
  background: #111b24;
}

.ad-carousel {
  position: absolute;
  inset: 0;
}

.ad-slide {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 52% 54%;
  transform: scale(1.02);
  opacity: 0;
  transition: opacity 900ms ease;
}

.ad-slide.is-active {
  opacity: 1;
}

.ad-dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 14px;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: 8px;
}

.ad-dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.42);
}

.ad-dots span.is-active {
  width: 22px;
  border-radius: 999px;
  background: var(--gold-soft);
}

.emblem {
  position: relative;
  display: grid;
  width: min(330px, 72vw);
  aspect-ratio: 1 / 1;
  place-items: center;
  border: 1px solid rgba(216, 173, 104, 0.38);
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 44%, rgba(255, 255, 255, 0.1), transparent 55%),
    rgba(5, 12, 19, 0.42);
}

.emblem::before,
.emblem::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.emblem::before {
  inset: 22px;
  border: 1px solid rgba(217, 221, 225, 0.18);
}

.emblem::after {
  inset: 56px;
  border: 1px solid rgba(216, 173, 104, 0.24);
}

.emblem img {
  position: relative;
  z-index: 1;
  display: block;
  width: 82%;
  height: 82%;
  object-fit: contain;
}

.hero-symbol p {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  z-index: 1;
  padding: 58px 22px 34px;
  color: var(--gold-soft);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 300;
  text-align: center;
  background: linear-gradient(180deg, rgba(7, 17, 27, 0), rgba(7, 17, 27, 0.86) 48%, rgba(7, 17, 27, 0.94));
}

.hero-symbol p span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(15px, 1.6vw, 20px);
  font-weight: 600;
}

.strip {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 84px 0;
}

.section-heading {
  max-width: 760px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(30px, 4.2vw, 54px);
  line-height: 1.16;
}

.section-heading.light {
  color: #fff;
}

.lead {
  max-width: 900px;
  margin: 28px 0 0;
  color: #44505a;
  font-size: 20px;
  line-height: 1.9;
}

.meaning-grid,
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 42px;
}

.meaning-grid article,
.service-grid article,
.step,
.join-form {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.62);
}

.meaning-grid article {
  padding: 28px;
}

.meaning-grid span {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 50%;
  color: #121820;
  background: linear-gradient(135deg, var(--gold-soft), var(--gold));
  font-size: 24px;
  font-weight: 800;
}

h3 {
  margin: 22px 0 10px;
  font-size: 22px;
}

.meaning-grid p,
.step p,
.service-grid p,
.join-copy p {
  margin: 0;
  color: #53606b;
  line-height: 1.75;
}

.dark-band,
.services,
.footer {
  color: #fff;
  background:
    linear-gradient(135deg, rgba(216, 173, 104, 0.1), transparent 34%),
    linear-gradient(180deg, var(--night), var(--night-2));
}

.value-row {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  padding: 34px 0;
}

.value-row article {
  min-height: 92px;
  padding: 24px;
  border-left: 1px solid rgba(216, 173, 104, 0.36);
}

.value-row b,
.value-row span {
  display: block;
}

.value-row b {
  color: var(--gold-soft);
  font-size: 20px;
}

.value-row span {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.72);
}

.system-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 26px;
  margin-top: 42px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.step {
  padding: 26px;
}

.step span {
  color: #a87434;
  font-weight: 800;
}

.quote-panel {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  justify-content: flex-end;
  padding: 30px;
  border-radius: 8px;
  color: #fff;
  background:
    radial-gradient(circle at 72% 22%, rgba(216, 173, 104, 0.32), transparent 26%),
    linear-gradient(135deg, #111b24, #07111b 72%);
  overflow: hidden;
}

.quote-panel p {
  margin: 0;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.45;
}

.quote-panel small {
  margin-top: 18px;
  color: var(--gold-soft);
  text-transform: uppercase;
}

.services {
  padding: 86px clamp(20px, 5vw, 72px);
}

.services .section-heading,
.service-grid {
  width: min(var(--max), 100%);
  max-width: var(--max);
  margin-left: auto;
  margin-right: auto;
}

.service-grid {
  grid-template-columns: repeat(4, 1fr);
}

.service-grid article {
  padding: 24px;
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}

.service-grid i {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(216, 173, 104, 0.68);
  border-radius: 50%;
  color: var(--gold-soft);
  font-style: normal;
  font-weight: 800;
}

.service-grid p {
  color: rgba(255, 255, 255, 0.68);
}

.document-layout {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 24px;
  margin-top: 42px;
}

.document-feature {
  position: sticky;
  top: 96px;
  align-self: start;
  padding: 28px;
  border: 1px solid rgba(216, 173, 104, 0.36);
  border-radius: 8px;
  color: #fff;
  background:
    radial-gradient(circle at 86% 10%, rgba(216, 173, 104, 0.32), transparent 28%),
    linear-gradient(150deg, #111b24, #07111b);
}

.document-feature span {
  color: var(--gold-soft);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.document-feature h3 {
  margin: 20px 0 12px;
  font-size: 28px;
  line-height: 1.28;
}

.document-feature p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.75;
}

.document-actions {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.document-actions a {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  color: #121820;
  background: linear-gradient(135deg, var(--gold-soft), var(--gold));
  font-weight: 800;
}

.document-actions a + a {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.document-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.doc-group {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.68);
}

.doc-group h3 {
  margin: 0 0 16px;
  font-size: 22px;
}

.doc-group small {
  display: block;
  margin-top: 4px;
  color: #9a6c2e;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.doc-link {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid rgba(17, 24, 32, 0.1);
}

.doc-link span {
  color: #24303a;
  font-weight: 700;
  line-height: 1.45;
}

.doc-link b {
  flex: 0 0 auto;
  min-width: 48px;
  padding: 6px 8px;
  border-radius: 999px;
  color: #7b5526;
  background: rgba(216, 173, 104, 0.18);
  font-size: 11px;
  text-align: center;
}

.doc-link:hover span {
  color: #9a6c2e;
}

.portal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 42px;
}

.portal-card {
  display: block;
  min-height: 220px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 16px 46px rgba(16, 24, 32, 0.06);
}

.portal-card.featured {
  color: #fff;
  background:
    radial-gradient(circle at 88% 14%, rgba(216, 173, 104, 0.32), transparent 28%),
    linear-gradient(150deg, #111b24, #07111b);
}

.portal-card span {
  color: #9a6c2e;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.portal-card.featured span {
  color: var(--gold-soft);
}

.portal-card h3 {
  margin: 18px 0 10px;
  font-size: 28px;
}

.portal-card p {
  margin: 0;
  color: #53606b;
  line-height: 1.75;
}

.portal-card.featured p {
  color: rgba(255, 255, 255, 0.72);
}

.portal-card:hover {
  transform: translateY(-2px);
  transition: transform 160ms ease, border-color 160ms ease;
  border-color: rgba(216, 173, 104, 0.42);
}

.join {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 42px;
  align-items: start;
}

.join-copy h2 {
  margin: 0 0 22px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.16;
}

.join-copy p {
  max-width: 690px;
  font-size: 18px;
}

.join-form {
  display: grid;
  gap: 16px;
  padding: 24px;
  box-shadow: 0 16px 46px rgba(16, 24, 32, 0.08);
}

.join-form label {
  display: grid;
  gap: 8px;
  color: #313b45;
  font-weight: 700;
}

.join-form input,
.join-form textarea {
  width: 100%;
  border: 1px solid rgba(17, 24, 32, 0.16);
  border-radius: 4px;
  padding: 13px 14px;
  color: var(--ink);
  background: #fff;
  font: inherit;
}

.join-form textarea {
  min-height: 108px;
  resize: vertical;
}

.join-form button {
  height: 48px;
  border: 0;
  border-radius: 4px;
  color: #121820;
  background: linear-gradient(135deg, var(--gold-soft), var(--gold));
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(20px, 5vw, 72px);
}

.footer strong,
.footer span {
  display: block;
}

.footer span,
.footer p {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.62);
}

.music-toggle {
  position: fixed;
  right: clamp(16px, 3vw, 34px);
  bottom: clamp(16px, 3vw, 34px);
  z-index: 20;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 46px;
  padding: 0 16px 0 12px;
  border: 1px solid rgba(216, 173, 104, 0.48);
  border-radius: 999px;
  color: #fff;
  background: rgba(7, 17, 27, 0.82);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(14px);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
}

.music-toggle:hover {
  border-color: rgba(243, 212, 154, 0.82);
}

.music-icon {
  position: relative;
  width: 24px;
  height: 24px;
  border: 1px solid rgba(216, 173, 104, 0.7);
  border-radius: 50%;
}

.music-icon::before,
.music-icon::after {
  content: "";
  position: absolute;
  background: var(--gold-soft);
}

.music-icon::before {
  left: 8px;
  top: 6px;
  width: 3px;
  height: 12px;
  border-radius: 2px;
}

.music-icon::after {
  left: 11px;
  top: 5px;
  width: 7px;
  height: 3px;
  border-radius: 2px;
  transform: rotate(14deg);
  transform-origin: left center;
}

.music-toggle.is-playing .music-icon {
  animation: musicPulse 1.6s ease-in-out infinite;
}

@keyframes musicPulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(216, 173, 104, 0.32);
  }
  50% {
    box-shadow: 0 0 0 7px rgba(216, 173, 104, 0);
  }
}

@media (max-width: 960px) {
  .site-header {
    position: absolute;
  }

  .nav {
    display: none;
  }

  .hero,
  .system-layout,
  .document-layout,
  .join {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 112px;
  }

  .hero-symbol {
    max-width: 560px;
  }

  .meaning-grid,
  .service-grid,
  .value-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .quote-panel {
    min-height: 380px;
  }

  .document-feature {
    position: static;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 14px 16px;
  }

  .brand strong {
    font-size: 14px;
  }

  .brand small {
    max-width: 180px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .hero {
    padding: 104px 18px 54px;
  }

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

  .strip {
    width: calc(100% - 32px);
    padding: 62px 0;
  }

  .lead {
    font-size: 17px;
  }

  .meaning-grid,
  .service-grid,
  .document-groups,
  .portal-grid,
  .value-row,
  .steps {
    grid-template-columns: 1fr;
  }

  .value-row {
    gap: 0;
  }

  .services {
    padding: 64px 16px;
  }

  .quote-panel {
    min-height: 300px;
  }

  .quote-panel p {
    font-size: 23px;
  }

  .footer {
    display: block;
  }
}