:root {
  --cloud: #f4f7fb;
  --mist: #e8eef5;
  --ink: #243044;
  --muted: #66758a;
  --line: rgba(36,48,68,0.16);
  --a: #7eb6c9;
  --b: #c9a6c0;
  --max: 1100px;
  --foot-min: 1180px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--cloud);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.75;
}
code, .mono { font-family: Consolas, "Courier New", monospace; font-size: 0.86em; letter-spacing: 0.04em; color: #4a6d82; }
img { max-width: 100%; height: auto; border: 0; vertical-align: middle; }
a { color: inherit; text-decoration: none; }
button, input { font-family: inherit; }
ul { margin: 0; padding: 0; list-style: none; }

.wash {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 14% 16%, rgba(126,182,201,0.28), transparent 42%),
    radial-gradient(ellipse at 86% 10%, rgba(201,166,192,0.24), transparent 40%),
    radial-gradient(ellipse at 70% 84%, rgba(180,210,200,0.22), transparent 46%);
}

.wrap { width: var(--max); max-width: calc(100% - 40px); margin: 0 auto; position: relative; z-index: 1; }
.kicker { font-size: 12px; letter-spacing: 0.18em; color: var(--muted); }
.h2 { margin: 8px 0 18px; font-size: 28px; font-weight: 600; }
.lead { max-width: 640px; color: var(--muted); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border: 2px solid transparent;
  border-radius: 999px;
  background:
    linear-gradient(#f4f7fb, #f4f7fb) padding-box,
    linear-gradient(120deg, var(--a), var(--b)) border-box;
  color: var(--ink);
  letter-spacing: 0.06em;
  cursor: pointer;
}
.btn-fill {
  background:
    linear-gradient(#243044, #243044) padding-box,
    linear-gradient(120deg, var(--a), var(--b)) border-box;
  color: #f4f7fb;
}

.index-top { position: absolute; top: 0; left: 0; z-index: 40; width: 100%; }
.top-inner {
  width: var(--max);
  max-width: calc(100% - 40px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 64px;
}
.logo img { width: 118px; display: block; }
.nav-main { display: flex; align-items: center; gap: 16px; flex: 1; justify-content: center; font-size: 13px; }
.nav-main > li { position: relative; }
.mega {
  display: none;
  position: absolute;
  top: 130%;
  left: 50%;
  transform: translateX(-50%);
  width: 520px;
  padding: 18px;
  background: #fff;
  z-index: 50;
  grid-template-columns: 1.2fr 1fr;
  gap: 12px;
  border-radius: 16px;
  box-shadow: 0 16px 40px rgba(36,48,68,0.1);
}
.has-mega:hover .mega, .has-mega:focus-within .mega { display: grid; }
.mega h4 { margin: 0 0 8px; font-size: 12px; }
.mega a { display: block; padding: 4px 0; color: var(--muted); }
.top-cta { display: flex; gap: 10px; align-items: center; }
.top-cta .link { font-size: 12px; }

.fab {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 70;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid transparent;
  background:
    linear-gradient(#fff, #fff) padding-box,
    linear-gradient(120deg, var(--a), var(--b)) border-box;
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
}
.overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 80;
  background: rgba(244,247,251,0.96);
  padding: 72px 40px;
  overflow: auto;
}
.overlay.is-on { display: block; }
.overlay a { display: inline-block; margin: 0 14px 12px 0; }
.overlay-close {
  position: absolute;
  top: 20px;
  right: 24px;
  border: 0;
  background: none;
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 100vh;
  padding: 120px 0 72px;
  overflow: hidden;
  background: #dfe8f0;
}
.tree {
  position: absolute;
  inset: 8% 6%;
  z-index: 1;
  opacity: 0.45;
}
.pulse { stroke-dasharray: 8 10; animation: dash 18s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -240; } }
.node { fill: #fff; stroke: #7eb6c9; stroke-width: 2; }
.on { fill: #7eb6c9; }
.globe { position: absolute; right: -80px; bottom: -120px; width: 520px; height: 520px; opacity: 0.28; z-index: 1; }
.spin { transform-origin: 200px 200px; animation: spin 50s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.hero-mask { position: absolute; inset: 0; z-index: 2; background: radial-gradient(ellipse at 30% 40%, rgba(244,247,251,0.2), rgba(36,48,68,0.22)); }
.hero-inner { position: relative; z-index: 3; }
.float-banner { display: inline-block; margin-bottom: 14px; font-size: 12px; letter-spacing: 0.16em; }
.hero h1 { margin: 0 0 10px; font-size: 48px; font-weight: 600; }
.hero .sub { margin: 0 0 24px; font-size: 18px; color: rgba(36,48,68,0.72); }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.section { padding: 80px 0; position: relative; z-index: 1; }
.sell-row { overflow: hidden; margin-left: -6.88%; }
.sell-item { float: left; width: 18.11%; margin-left: 6.88%; text-align: center; }
.illust { width: 200px; height: 176px; margin: 0 auto 12px; object-fit: cover; display: block; background: #cfd8e2; border-radius: 12px; }
.sell-item h3 { margin: 0 0 6px; font-size: 16px; }
.sell-item p { margin: 0; text-align: left; color: var(--muted); font-size: 13px; }

.orbit {
  position: relative;
  min-height: 420px;
  max-width: 760px;
  margin: 0 auto;
}
.hub {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 96px;
  height: 96px;
  margin: -48px 0 0 -48px;
  object-fit: contain;
  background: #fff;
  border-radius: 50%;
  padding: 16px;
  box-shadow: 0 10px 30px rgba(36,48,68,0.08);
}
.sat {
  position: absolute;
  width: 160px;
  text-align: center;
  font-size: 13px;
}
.sat img { width: 72px; height: 56px; object-fit: cover; border-radius: 10px; background: #cfd8e2; }
.sat:nth-child(2) { left: 50%; top: 0; transform: translateX(-50%); }
.sat:nth-child(3) { right: 0; top: 28%; }
.sat:nth-child(4) { right: 8%; bottom: 4%; }
.sat:nth-child(5) { left: 8%; bottom: 4%; }
.sat:nth-child(6) { left: 0; top: 28%; }
.shot { width: 100%; max-width: 720px; margin: 18px auto 0; display: block; object-fit: contain; background: #cfd8e2; border-radius: 12px; }

.icon-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.icon-cell { background: rgba(255,255,255,0.7); padding: 18px 14px; min-height: 118px; border-radius: 12px; }
.icon-cell strong { display: block; margin-bottom: 6px; }
.icon-cell span { color: var(--muted); font-size: 13px; }
.more-box { display: none; margin-top: 8px; }
.more-box.is-on { display: grid; }
.fold-btn { display: block; margin: 20px auto 0; background: none; border: 0; cursor: pointer; color: var(--muted); }
.oa-banner { width: 100%; max-width: 460px; margin: 0 0 22px; background: #2a5a4a; border-radius: 12px; }

.gauges { display: flex; justify-content: space-around; gap: 12px; flex-wrap: wrap; }
.gauge {
  width: 160px;
  height: 90px;
  background: conic-gradient(from 180deg, var(--a) calc(var(--p) * 1%), #d7e0ea 0);
  border-radius: 160px 160px 0 0;
  -webkit-mask: radial-gradient(circle at 50% 100%, transparent 52px, #000 53px);
  mask: radial-gradient(circle at 50% 100%, transparent 52px, #000 53px);
  position: relative;
}
.gauge span {
  position: absolute;
  left: 0; right: 0; bottom: 8px;
  text-align: center;
  font-family: Consolas, monospace;
  font-size: 18px;
}

.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.card { padding: 22px; min-height: 160px; background: rgba(255,255,255,0.72); border-radius: 12px; }
.card.private { border-radius: 16px; border: 1px solid rgba(6,15,26,0.07); }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.tile-shot { width: 100%; height: 128px; object-fit: cover; object-position: top; margin-top: 12px; border-radius: 10px; }

.avatars { display: flex; flex-wrap: wrap; gap: 8px; position: relative; min-height: 180px; }
.av {
  width: 48px; height: 48px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: #d7e0ea; font-size: 12px; font-weight: 700;
}
.bubble {
  position: absolute;
  max-width: 220px;
  padding: 12px 14px;
  background: #fff;
  border-radius: 14px;
  font-size: 13px;
  box-shadow: 0 10px 24px rgba(36,48,68,0.08);
}
.bubble:nth-of-type(1) { top: 8px; left: 120px; }
.bubble:nth-of-type(2) { top: 70px; right: 40px; }
.bubble:nth-of-type(3) { bottom: 10px; left: 40%; }

.marquee { overflow: hidden; padding: 12px 0; }
.track { display: flex; gap: 10px; width: max-content; animation: marquee 90s linear infinite; }
.quote-card { flex: 0 0 228px; padding: 16px; background: rgba(255,255,255,0.8); font-size: 13px; color: var(--muted); border-radius: 12px; }
.quote-card strong { display: block; margin-top: 10px; color: var(--ink); font-size: 12px; }
@keyframes marquee { to { transform: translateX(-50%); } }

.stack { position: relative; min-height: 280px; max-width: 520px; margin: 0 auto; }
.pack {
  position: absolute;
  left: 8%;
  right: 8%;
  padding: 22px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 16px 32px rgba(36,48,68,0.08);
}
.pack:nth-child(1) { top: 0; transform: rotate(-3deg); z-index: 1; }
.pack:nth-child(2) { top: 36px; transform: rotate(2deg); z-index: 2; }
.pack:nth-child(3) { top: 78px; transform: rotate(-1deg); z-index: 3; }
.pack:nth-child(4) { top: 118px; transform: none; z-index: 4; }
.platforms { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 160px; }
.plat { text-align: center; padding: 14px 8px; background: #fff; border-radius: 12px; }

.faq-split { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 18px; }
.qlist button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 12px 14px;
  margin-bottom: 8px;
  border: 0;
  background: rgba(255,255,255,0.7);
  border-radius: 10px;
  cursor: pointer;
}
.qlist button.is-on {
  background: #fff;
  box-shadow: 0 8px 20px rgba(36,48,68,0.08);
}
.apane { background: #fff; border-radius: 16px; padding: 24px; min-height: 200px; }
.apane .ans { display: none; }
.apane .ans.is-on { display: block; }

.article { max-width: 740px; }
.article p { margin: 0 0 16px; color: var(--muted); }
.article h2 { margin: 26px 0 10px; font-size: 22px; }
.crumbs { padding: 88px 0 0; font-size: 12px; color: var(--muted); }
.page-hero { padding: 18px 0 36px; }
.page-hero h1 { margin: 8px 0 12px; font-size: 32px; }
body.sub .index-top { background: rgba(244,247,251,0.94); }

.site-foot { background: #f7f8f8; min-width: var(--foot-min); padding: 40px 0 24px; color: #6a6560; }
.foot-inner { width: var(--foot-min); max-width: calc(100% - 40px); margin: 0 auto; }
.foot-logo { width: 160px; margin-bottom: 12px; }
.subbox { display: flex; gap: 8px; max-width: 420px; margin: 12px 0 22px; }
.subbox input { flex: 1; border: 1px solid #e0e4ea; padding: 10px 12px; border-radius: 999px; background: #fff; }
.foot-nav { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.foot-nav h4 { margin: 0 0 8px; color: var(--ink); font-size: 13px; }
.foot-nav a { display: block; padding: 3px 0; font-size: 13px; }
.legal { font-size: 12px; color: #828282; max-width: 820px; }

@media (max-width: 1180px) { .site-foot, .foot-inner { min-width: 0; width: 100%; } }
@media (max-width: 930px) {
  .hero h1 { font-size: 32px; }
  .cards-3, .faq-split { grid-template-columns: 1fr; }
  .sell-item { width: 43%; margin-bottom: 22px; }
  .icon-grid, .platforms { grid-template-columns: 1fr 1fr; }
  .orbit { min-height: auto; }
  .sat { position: relative; left: auto !important; right: auto !important; top: auto !important; bottom: auto !important; transform: none; display: inline-block; margin: 8px; }
  .hub { position: relative; left: auto; top: auto; margin: 0 auto 16px; display: block; }
  .pack { position: relative; left: auto; right: auto; top: auto !important; transform: none !important; margin-bottom: 10px; }
  .stack { min-height: 0; }
  .platforms { margin-top: 12px; }
  .foot-nav { flex-wrap: wrap; }
}
@media (max-width: 770px) {
  .nav-main, .top-cta .link { display: none; }
  .sell-item { width: 100%; margin-left: 0; }
  .sell-row { margin-left: 0; }
}