:root {
  --color-ink: #06101F;
  --color-deep: #0B1D3A;
  --color-navy: #122A4E;
  --color-gold: #D4A843;
  --color-gold-bright: #F2C94C;
  --color-red: #E63946;
  --color-ice: #E8F0FE;
  --color-moon: #B0C4DE;
  --color-electric: #39D2F2;
  --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", monospace;
  --header-h: 74px;
  --container: 1240px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --section-py: clamp(4rem, 8vw, 6.5rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-ice);
  background-color: var(--color-deep);
  background-image:
    radial-gradient(ellipse 80% 60% at 85% -20%, rgba(57, 210, 242, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 10% 10%, rgba(212, 168, 67, 0.06), transparent);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  display: block;
}

#main-content {
  display: block;
  scroll-margin-top: calc(var(--header-h) + 16px);
}

a {
  color: inherit;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.2;
  color: var(--color-ice);
}

:focus-visible {
  outline: 3px solid var(--color-electric);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: rgba(212, 168, 67, 0.35);
  color: var(--color-ice);
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-ink);
}
::-webkit-scrollbar-thumb {
  background: var(--color-navy);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(212, 168, 67, 0.5);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -60px;
  left: 20px;
  z-index: 200;
  padding: 10px 20px;
  background: var(--color-gold);
  color: var(--color-ink);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  line-height: 1.4;
  transition: top 0.3s ease;
}
.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-electric);
  outline-offset: 0;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}

.section {
  padding-block: var(--section-py);
}

.section-head {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.section-index {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gold);
}
.section-index::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--color-gold);
  transform: skewX(-28deg);
  flex-shrink: 0;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  line-height: 1.15;
  color: var(--color-ice);
  margin: 12px 0 0;
  letter-spacing: -0.01em;
}
.section-title em {
  font-style: normal;
  color: var(--color-gold);
}

.meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-moon);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease, transform 0.3s var(--ease), box-shadow 0.3s ease;
}
.btn--gold {
  background: var(--color-gold);
  color: var(--color-ink);
}
.btn--gold:hover,
.btn--gold:focus-visible {
  background: var(--color-gold-bright);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(242, 201, 76, 0.25);
}
.btn--ghost {
  background: transparent;
  border-color: rgba(212, 168, 67, 0.6);
  color: var(--color-gold);
}
.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: rgba(212, 168, 67, 0.12);
  border-color: var(--color-gold-bright);
  color: var(--color-gold-bright);
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 24px);
}

.bento-card {
  position: relative;
  background: var(--color-navy);
  border: 1px solid rgba(212, 168, 67, 0.12);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 32px);
  min-height: 120px;
  transition: transform 0.35s var(--ease), border-color 0.35s ease, box-shadow 0.35s ease;
}
.bento-card:hover {
  transform: translateY(-4px) scale(1.01);
  border-color: rgba(212, 168, 67, 0.35);
  box-shadow: 0 16px 40px rgba(6, 16, 31, 0.4);
}

.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  aspect-ratio: 16 / 10;
  background:
    radial-gradient(circle at 30% 25%, rgba(57, 210, 242, 0.12), transparent 55%),
    linear-gradient(135deg, rgba(212, 168, 67, 0.08) 0%, transparent 55%),
    var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
}
.media--portrait {
  aspect-ratio: 4 / 5;
}
.media--wide {
  aspect-ratio: 16 / 7;
}
.media--square {
  aspect-ratio: 1 / 1;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  color: var(--color-ice);
  transition: background-color 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}
.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold) 30%, transparent 30%, transparent 85%, var(--color-red) 85%, var(--color-red) 100%);
  opacity: 0;
  transform: scaleX(0);
  transform-origin: left;
  transition: opacity 0.35s ease, transform 0.5s var(--ease);
  pointer-events: none;
}
.site-header.is-scrolled {
  background: rgba(11, 29, 58, 0.96);
  box-shadow: 0 4px 24px rgba(6, 16, 31, 0.4);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.site-header.is-scrolled::after {
  opacity: 1;
  transform: scaleX(1);
}
.site-header.is-nav-open {
  background: rgba(11, 29, 58, 0.98);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: var(--header-h);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}
.site-brand__mark {
  width: 36px;
  height: 36px;
  color: var(--color-gold);
  flex-shrink: 0;
}
.site-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  white-space: nowrap;
}
.site-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--color-ice);
  line-height: 1.2;
}
.site-brand__name i {
  font-style: normal;
  font-weight: 400;
  color: var(--color-gold);
  margin-left: 4px;
  letter-spacing: 0.06em;
}
.site-brand__sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-moon);
  line-height: 1.4;
  margin-top: 2px;
}

.site-nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  z-index: 90;
  max-height: 0;
  overflow: hidden;
  background: rgba(11, 29, 58, 0.98);
  padding: 0;
  transition: max-height 0.45s var(--ease), padding 0.45s var(--ease), box-shadow 0.45s ease;
}
.site-nav[data-open] {
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 20px 0 28px;
  box-shadow: 0 16px 40px rgba(6, 16, 31, 0.45);
  border-bottom: 1px solid rgba(212, 168, 67, 0.35);
}
.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-nav__item {
  list-style: none;
}
.site-nav__link {
  display: block;
  margin: 0 clamp(16px, 4vw, 32px);
  padding: 13px 20px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 16px;
  color: var(--color-ice);
  text-decoration: none;
  transition: background-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}
.site-nav__link:hover,
.site-nav__link:focus-visible {
  background: rgba(212, 168, 67, 0.15);
  color: var(--color-gold-bright);
}
.site-nav__link[aria-current="page"] {
  background: rgba(212, 168, 67, 0.12);
  color: var(--color-gold-bright);
  box-shadow: inset 0 0 0 1px rgba(212, 168, 67, 0.4);
}

.site-header__cta {
  flex-shrink: 0;
  margin-left: auto;
}

.site-nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid rgba(232, 240, 254, 0.3);
  border-radius: 12px;
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}
.site-nav-toggle:hover,
.site-nav-toggle:focus-visible {
  border-color: rgba(212, 168, 67, 0.6);
  background: rgba(212, 168, 67, 0.08);
}
.site-nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-ice);
  transition: transform 0.3s var(--ease), opacity 0.25s ease, background-color 0.25s ease;
}
.site-nav-toggle:hover .site-nav-toggle__bar,
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar {
  background: var(--color-gold-bright);
}
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(2) {
  transform: translateY(7px) rotate(45deg);
}
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(3) {
  opacity: 0;
}
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(4) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-footer {
  position: relative;
  z-index: 10;
  background: var(--color-ink);
  color: var(--color-moon);
  padding-top: clamp(48px, 7vw, 72px);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold) 25%, var(--color-electric) 60%, var(--color-electric) 100%);
  opacity: 0.7;
  pointer-events: none;
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: clamp(32px, 5vw, 64px);
  padding-bottom: clamp(40px, 5vw, 56px);
}
.site-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.site-footer__logo-mark {
  width: 34px;
  height: 34px;
  color: var(--color-gold);
  flex-shrink: 0;
}
.site-footer__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.site-footer__logo-text strong {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  color: var(--color-ice);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.site-footer__logo-text em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-moon);
  margin-top: 2px;
  white-space: nowrap;
}
.site-footer__trust {
  margin-top: 18px;
  max-width: 420px;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--color-moon);
}
.site-footer__heading {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin: 0 0 16px;
}
.site-footer__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-footer__list a {
  display: inline-block;
  font-size: 14px;
  font-weight: 400;
  color: var(--color-moon);
  text-decoration: none;
  padding: 2px 0;
  transition: color 0.25s ease;
}
.site-footer__list a:hover,
.site-footer__list a:focus-visible {
  color: var(--color-gold-bright);
}
.site-footer__contact-line {
  display: flex;
  gap: 10px;
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.8;
}
.site-footer__contact-label {
  flex-shrink: 0;
  min-width: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--color-gold);
}
.site-footer__contact-value {
  flex: 1;
  color: var(--color-moon);
  overflow-wrap: anywhere;
}
.site-footer__contact-note {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid rgba(212, 168, 67, 0.5);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.7;
  color: rgba(176, 196, 222, 0.7);
}
.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding: 20px 0 28px;
  border-top: 1px solid rgba(176, 196, 222, 0.12);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: rgba(176, 196, 222, 0.7);
}
.site-footer__copyright,
.site-footer__icp {
  margin: 0;
}

.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.has-js [data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 1025px) {
  .site-nav {
    position: static;
    max-height: none;
    overflow: visible;
    background: transparent;
    box-shadow: none;
    border-bottom: none;
    padding: 0;
    margin-left: auto;
  }
  .site-nav[data-open] {
    max-height: none;
    padding: 0;
    box-shadow: none;
    border-bottom: none;
  }
  .site-nav__list {
    flex-direction: row;
    align-items: center;
    gap: 2px;
  }
  .site-nav__link {
    display: inline-block;
    margin: 0;
    padding: 9px 16px;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 500;
    background: transparent;
  }
  .site-nav__link:hover,
  .site-nav__link:focus-visible {
    background: rgba(212, 168, 67, 0.18);
    color: var(--color-gold-bright);
  }
  .site-nav__link[aria-current="page"] {
    background: rgba(212, 168, 67, 0.12);
    color: var(--color-gold-bright);
    box-shadow: inset 0 0 0 1px rgba(212, 168, 67, 0.4);
  }
  .site-header__cta {
    margin-left: 0;
  }
  .site-nav-toggle {
    display: none;
  }
}

@media (max-width: 1024px) {
  .site-header__cta {
    margin-left: auto;
  }
}

@media (max-width: 768px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .site-footer__list {
    grid-template-columns: 1fr 1fr;
  }
  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .col-3,
  .col-4,
  .col-5,
  .col-6 {
    grid-column: span 6;
  }
  .col-8,
  .col-12 {
    grid-column: span 12;
  }
}

@media (max-width: 640px) {
  .col-3,
  .col-4,
  .col-5,
  .col-6,
  .col-8,
  .col-12 {
    grid-column: span 12;
  }
  .site-footer__list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .site-brand__sub {
    display: none;
  }
  .site-header__cta {
    padding: 9px 16px;
    font-size: 13px;
  }
  .site-brand__name {
    font-size: 16px;
  }
  .site-brand__mark {
    width: 30px;
    height: 30px;
  }
}

@media (max-width: 360px) {
  .site-header__cta {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
  }
  .has-js [data-reveal],
  .has-js [data-reveal].is-revealed {
    opacity: 1;
    transform: none;
  }
}