:root {
  --bg-deep: #0A1128;
  --bg-panel: #14213D;
  --gold: #F2A900;
  --gold-light: #F7C873;
  --purple: #6D28D9;
  --cream: #F5EFE6;
  --brown: #2B1E14;
  --red: #E4572E;
  --green: #4ADE80;
  --moon: #E8E6E1;
  --font-head: 'Space Grotesk', 'Suisse Intl', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Serif SC', Georgia, 'Songti SC', serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Consolas, monospace;
  --container: 1200px;
  --nav-w: 220px;
  --radius: 0px;
  --transition: 220ms ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px),
    var(--bg-deep);
  background-size: 32px 32px;
  color: var(--moon);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.15;
  color: var(--cream);
}
h1 { font-size: clamp(2rem, 4vw, 3.25rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.4rem, 2vw, 2rem); }
h3 { font-size: 1.15rem; }
p { margin-bottom: 1rem; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
::selection { background: var(--gold); color: var(--bg-deep); }

#main-content { min-height: 70vh; }

.container, .section-container {
  width: min(var(--container), calc(100% - 2rem));
  margin-inline: auto;
}
.content-container {
  width: min(760px, calc(100% - 2rem));
  margin-inline: auto;
}
.page-shell {
  display: grid;
  grid-template-columns: var(--nav-w) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  width: min(var(--container), calc(100% - 2rem));
  margin-inline: auto;
  padding: 2.5rem 0 4rem;
}
.brand-rail {
  position: sticky;
  top: 6.5rem;
  display: grid;
  gap: 1.5rem;
  border-right: 1px solid rgba(242,169,0,0.18);
  padding-right: 1.5rem;
}
.page-main { min-width: 0; }
.gold-rule {
  height: 2px;
  border: 0;
  background: linear-gradient(90deg, var(--gold), rgba(242,169,0,0.1));
  margin: 2rem 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 200;
  padding: 0.75rem 1.25rem;
  background: var(--gold);
  color: var(--bg-deep);
  font-family: var(--font-head);
  font-weight: 700;
  transform: translateY(-200%);
  transition: transform 180ms ease;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-deep);
  border-bottom: 1px solid rgba(242,169,0,0.22);
}
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(255,255,255,0.06);
  overflow: hidden;
}
.scroll-progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--gold), var(--gold-light), var(--purple));
  transition: width 120ms linear;
}
.header-track {
  max-width: var(--container);
  margin-inline: auto;
  padding: 0 1rem;
}
.header-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.45rem 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--moon);
  border-bottom: 1px solid rgba(232,230,225,0.1);
}
.meta-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--green);
}
.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(74,222,128,0.14);
  animation: statusPulse 2.4s ease infinite;
}
@keyframes statusPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.65; transform: scale(0.82); }
}
.meta-contact { color: var(--moon); opacity: 0.75; }

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 5rem;
}
.brand-lockup { display: inline-flex; align-items: center; gap: 0.75rem; }
.brand-lockup--footer { display: inline-flex; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--bg-deep);
  border: 1px solid rgba(255,255,255,0.16);
  box-shadow: 0 0 0 1px rgba(242,169,0,0.2), 0 8px 24px rgba(0,0,0,0.25);
}
.brand-mark-core { font-family: var(--font-head); font-weight: 700; font-size: 1.35rem; line-height: 1; }
.brand-copy { display: grid; gap: 0.05rem; }
.brand-name { font-family: var(--font-head); font-weight: 700; font-size: 1.05rem; letter-spacing: 0.02em; color: var(--cream); line-height: 1.2; }
.brand-tagline { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.12em; color: var(--gold-light); text-transform: uppercase; }

.nav-panel { display: flex; align-items: center; gap: 1.25rem; }
.primary-nav { display: flex; align-items: center; gap: 0.2rem; flex-wrap: wrap; }
.nav-item { margin: 0; }
.nav-link {
  display: block;
  padding: 0.55rem 0.65rem;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--moon);
  border-bottom: 2px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}
.nav-link:hover { color: var(--gold-light); border-bottom-color: rgba(242,169,0,0.4); }
.nav-link[aria-current="page"] { color: var(--gold); border-bottom-color: var(--gold); }
.nav-cta { margin-left: 0.35rem; }
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  gap: 0.3rem;
  flex-direction: column;
  color: var(--cream);
}
.nav-toggle-line { width: 1.35rem; height: 2px; background: var(--gold); transition: transform 200ms ease, opacity 200ms ease; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}
.btn-primary {
  background: var(--gold);
  color: var(--bg-deep);
  border-color: var(--gold);
  box-shadow: 0 4px 0 rgba(0,0,0,0.18);
}
.btn-primary:hover { background: var(--gold-light); border-color: var(--gold-light); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--gold-light);
  border-color: rgba(247,200,115,0.4);
}
.btn-ghost:hover { border-color: var(--gold-light); background: rgba(242,169,0,0.08); }

.site-footer {
  background: var(--bg-deep);
  border-top: 4px solid var(--gold);
  margin-top: 4rem;
}
.footer-top {
  max-width: var(--container);
  margin-inline: auto;
  padding: 3rem 1rem 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.2fr) minmax(0, 1.2fr);
  gap: 2.5rem;
}
.footer-brand { display: grid; gap: 1rem; align-content: start; justify-items: start; }
.footer-brand .brand-mark { width: 3rem; height: 3rem; }
.footer-brand .brand-name { font-size: 1.2rem; }
.footer-trust {
  margin-top: 0.5rem;
  max-width: 30rem;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(232,230,225,0.78);
  border-left: 2px solid var(--purple);
  padding-left: 1rem;
}
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.footer-heading {
  font-family: var(--font-head);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(247,200,115,0.2);
}
.footer-links-group ul { display: grid; gap: 0.5rem; }
.footer-links-group a {
  color: var(--moon);
  opacity: 0.82;
  font-size: 0.9rem;
  font-family: var(--font-body);
  transition: opacity 180ms ease, color 180ms ease;
}
.footer-links-group a:hover { opacity: 1; color: var(--gold); }
.footer-contact { display: grid; gap: 1rem; align-content: start; }
.footer-contact-list { display: grid; gap: 0.6rem; font-size: 0.9rem; color: var(--moon); }
.contact-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--purple);
  margin-right: 0.5rem;
}
.contact-note { margin-top: 0.5rem; font-size: 0.78rem; color: rgba(232,230,225,0.55); line-height: 1.7; }
.footer-bottom {
  max-width: var(--container);
  margin-inline: auto;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(232,230,225,0.55);
  border-top: 1px solid rgba(232,230,225,0.1);
}
.footer-bottom p { margin: 0; }
.footer-copyright { color: inherit; }
.footer-icp { color: inherit; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-family: var(--font-head);
  font-size: 0.82rem;
  color: var(--moon);
  opacity: 0.7;
  padding: 1.25rem 0;
}
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb [aria-current="page"] { color: var(--gold); }

.card {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid rgba(247,200,115,0.12);
  padding: 1.5rem;
  border-radius: 0;
  box-shadow: 0 14px 30px rgba(0,0,0,0.18);
}
.card::before {
  content: "";
  display: block;
  height: 2px;
  background: var(--gold);
  margin-bottom: 1rem;
  width: 2.6rem;
}
.card--cream {
  background: var(--cream);
  color: var(--brown);
  border-color: rgba(43,30,20,0.18);
  box-shadow: 0 14px 30px rgba(0,0,0,0.12);
}
.card--cream h1, .card--cream h2, .card--cream h3, .card--cream h4 { color: var(--brown); }
.grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1.5rem; }
.panel {
  background: rgba(20,33,61,0.72);
  border: 1px solid rgba(232,230,225,0.1);
  padding: 1.25rem;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  background: rgba(109,40,217,0.18);
  color: var(--gold-light);
  border: 1px solid rgba(109,40,217,0.35);
  text-transform: uppercase;
}
.tag--purple { background: rgba(109,40,217,0.22); color: #E9D5FF; }
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--green);
  background: rgba(74,222,128,0.08);
  border: 1px solid rgba(74,222,128,0.3);
  cursor: pointer;
}
.notice {
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--red);
  background: rgba(228,87,46,0.08);
  color: var(--moon);
  font-size: 0.9rem;
}

.tabs { margin: 1.5rem 0; }
.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  border-bottom: 1px solid rgba(242,169,0,0.25);
  margin-bottom: 1.25rem;
}
.tab-button {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 0.7rem 1rem;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--moon);
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease;
}
.tab-button:hover { color: var(--gold-light); }
.tab-button[aria-selected="true"] { color: var(--gold); border-bottom-color: var(--gold); }
.tab-panel { padding-top: 0.5rem; }

.visual-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-panel), #0d1730);
  border: 1px solid rgba(242,169,0,0.16);
  aspect-ratio: 16 / 9;
}
.visual-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(242,169,0,0.22), transparent 42%),
    radial-gradient(circle at 78% 72%, rgba(109,40,217,0.25), transparent 38%),
    linear-gradient(120deg, transparent 0%, rgba(255,255,255,0.04) 48%, transparent 70%);
  background-size: 200% 200%;
}
.visual-frame::after {
  content: "";
  position: absolute;
  right: -20%;
  top: -20%;
  width: 55%;
  height: 55%;
  border: 1px solid rgba(242,169,0,0.24);
  transform: rotate(35deg);
}
.visual-placeholder {
  display: grid;
  place-items: center;
  min-height: 260px;
  background:
    linear-gradient(120deg, transparent 30%, rgba(247,200,115,0.14) 50%, transparent 70%),
    linear-gradient(135deg, var(--bg-panel), #0B1633);
  border: 1px dashed rgba(247,200,115,0.32);
  color: rgba(232,230,225,0.5);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 1rem;
  text-align: center;
}

@media (max-width: 920px) {
  .grid { grid-template-columns: repeat(6, 1fr); }
  .page-shell { grid-template-columns: 1fr; }
  .brand-rail {
    position: static;
    border-right: 0;
    border-bottom: 1px solid rgba(242,169,0,0.18);
    padding-bottom: 1.25rem;
  }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .header-meta { display: none; }
  .nav-toggle { display: grid; position: relative; z-index: 120; }
  .nav-panel {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(20rem, 86vw);
    background: var(--bg-panel);
    border-left: 1px solid rgba(242,169,0,0.25);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 5.5rem 1.5rem 2rem;
    transform: translateX(105%);
    transition: transform 260ms ease, visibility 0s linear 260ms;
    box-shadow: -20px 0 50px rgba(0,0,0,0.4);
    overflow-y: auto;
    z-index: 110;
    visibility: hidden;
  }
  .nav-panel[data-open] {
    transform: translateX(0);
    visibility: visible;
    transition: transform 260ms ease, visibility 0s;
  }
  .primary-nav { flex-direction: column; align-items: stretch; gap: 0.15rem; }
  .nav-link {
    padding: 0.85rem 0.6rem;
    font-size: 1.1rem;
    border-bottom: 1px solid rgba(232,230,225,0.08);
  }
  .nav-cta { margin: 1.25rem 0 0; }
  .site-header[data-open] .nav-toggle .nav-toggle-line:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .site-header[data-open] .nav-toggle .nav-toggle-line:nth-child(2) { opacity: 0; }
  .site-header[data-open] .nav-toggle .nav-toggle-line:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
}

@media (max-width: 640px) {
  .footer-top { grid-template-columns: 1fr; gap: 1.75rem; }
  .footer-links { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .grid { grid-template-columns: 1fr; }
  .header-main { min-height: 4.5rem; }
  .brand-name { font-size: 0.95rem; }
  .brand-tagline { font-size: 0.6rem; }
  .brand-mark { width: 2.3rem; height: 2.3rem; }
  .brand-mark-core { font-size: 1.15rem; }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .status-dot { animation: none; }
  .nav-panel { transition: none; }
  .scroll-progress span { transition: none; }
}