:root {
  --ice: #5b87a8;
  --ice-d: #355a74;
  --ice-l: #cfe0ec;
  --ink: #131a21;
  --muted: #6b7780;
  --paper: #eef1f3;
  --max: 1100px;
  --foot-min: 1180px;
  --r: 22px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 10%, rgba(91, 135, 168, 0.16), transparent 42%),
    radial-gradient(circle at 88% 80%, rgba(207, 224, 236, 0.6), transparent 46%),
    var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.75;
}
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; }

.hand {
  font-family: "Segoe Script", "KaiTi", "STKaiti", "STXingkai", cursive;
  font-weight: 700;
  color: var(--ice-d);
}

.wrap { width: var(--max); max-width: calc(100% - 40px); margin: 0 auto; position: relative; z-index: 1; }
.kicker { font-size: 12px; letter-spacing: 0.2em; color: var(--ice-d); }
.h2 { margin: 8px 0 18px; font-size: 28px; font-weight: 800; }
.lead { max-width: 640px; color: var(--muted); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 24px;
  border: 0;
  border-radius: var(--r);
  background: var(--ice-d);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 14px 30px rgba(53, 90, 116, 0.28);
}
.btn-ghost { background: #fff; color: var(--ink); box-shadow: 0 12px 26px rgba(19, 26, 33, 0.1); }

.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-mid { display: flex; gap: 16px; align-items: center; font-size: 13px; flex: 1; justify-content: center; }
.nav-mid > a { white-space: nowrap; }
.drop { position: relative; }
.drop summary { list-style: none; cursor: pointer; }
.drop summary::-webkit-details-marker { display: none; }
.mega {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%);
  min-width: 220px; background: #fff; border-radius: 16px; padding: 12px;
  box-shadow: 0 16px 36px rgba(19,26,33,0.14); display: none; z-index: 50;
}
.drop[open] .mega { display: grid; gap: 4px; }
.mega a { display: block; padding: 6px 8px; border-radius: 10px; }
.mega a:hover { background: var(--ice-l); }
.top-cta { margin-left: auto; display: flex; gap: 10px; align-items: center; font-size: 12px; }
.top-cta .btn { min-height: 34px; padding: 0 14px; }
.split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 28px; align-items: center; }
.split.rev { grid-template-columns: 0.95fr 1.05fr; }
.split img { width: 100%; height: 280px; object-fit: cover; border-radius: var(--r); box-shadow: 0 14px 32px rgba(19,26,33,0.12); }
.split p { margin: 0 0 12px; color: var(--muted); }
.band-b .split p { color: rgba(238,241,243,0.82); }

.rail {
  position: fixed; left: 16px; top: 50%; transform: translateY(-50%); z-index: 70;
  display: flex; flex-direction: column; gap: 8px;
}
.rail a {
  width: 46px; height: 46px; border-radius: 50%;
  background: rgba(255,255,255,0.9); box-shadow: 0 8px 20px rgba(19,26,33,0.12);
  display: flex; align-items: center; justify-content: center; font-size: 13px; color: var(--ice-d); font-weight: 700;
}
.rail a:hover { background: var(--ice-l); }

.hero {
  position: relative;
  min-height: 100vh;
  padding: 130px 0 70px;
  overflow: hidden;
  background: linear-gradient(180deg, #d7e3ec, #c6d8e4);
  text-align: center;
}
.globe { position: absolute; left: 50%; top: 10%; width: 720px; height: 720px; margin-left: -360px; opacity: 0.14; 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 50% 40%, rgba(238,241,243,0.04), rgba(53,90,116,0.18)); }
.hero-inner { position: relative; z-index: 3; }
.float-banner {
  display: inline-block; margin-bottom: 16px; padding: 8px 18px; border-radius: 999px;
  background: rgba(255,255,255,0.85); color: var(--ink); font-size: 12px;
  box-shadow: 0 12px 26px rgba(19,26,33,0.14);
  animation: floaty 3.2s ease-in-out infinite;
}
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
.hero h1 { margin: 0 0 8px; font-size: 48px; font-weight: 900; line-height: 1.2; }
.hero .sub { margin: 0 0 20px; font-size: 17px; color: var(--ice-d); }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }

.section { padding: 84px 0; position: relative; z-index: 1; }
.band-a { background: #e2ebf1; border-radius: 40px; margin: 0 12px; }
.band-b { background: #22384a; color: #eef1f3; border-radius: 40px; margin: 0 12px; }
.band-b .lead, .band-b p { color: rgba(238,241,243,0.8); }
.band-c { background: transparent; }

.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: #cfe0ec; border-radius: var(--r); box-shadow: 0 14px 30px rgba(19,26,33,0.1); }
.sell-item h3 { margin: 0 0 6px; font-size: 16px; }
.sell-item p { margin: 0; text-align: left; color: var(--muted); font-size: 13px; }
.band-b .sell-item p { color: rgba(238,241,243,0.8); }

.icon-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.icon-cell { padding: 18px 14px; min-height: 112px; border-radius: var(--r); background: #fff; box-shadow: 0 12px 26px rgba(19,26,33,0.1); }
.icon-cell strong { display: block; margin-bottom: 6px; }
.icon-cell span { color: var(--muted); font-size: 13px; }
.more-box { display: none; margin-top: 10px; }
.more-box.is-on { display: grid; }
.fold-btn { display: block; margin: 20px auto 0; background: #fff; border: 0; cursor: pointer; color: var(--ice-d); padding: 10px 20px; border-radius: 999px; box-shadow: 0 10px 24px rgba(19,26,33,0.1); }
.oa-banner { width: 100%; max-width: 460px; margin: 0 0 22px; background: #2a5a4a; border-radius: var(--r); }

.ticker { overflow: hidden; padding: 14px 0; background: rgba(34,56,74,0.92); color: #cfe0ec; }
.ticker-track { display: flex; gap: 28px; width: max-content; animation: marquee 26s linear infinite; font-size: 14px; }
.ticker-track span { white-space: nowrap; font-weight: 700; }

.mason { column-count: 3; column-gap: 12px; }
.mason-item { break-inside: avoid; margin-bottom: 12px; padding: 16px; background: #fff; border-radius: var(--r); box-shadow: 0 12px 26px rgba(19,26,33,0.08); }
.mason-item .num { font-size: 30px; font-weight: 900; color: var(--ice-d); line-height: 1.1; }
.mason-item p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }

.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.card { padding: 22px; min-height: 160px; border-radius: var(--r); background: #fff; box-shadow: 0 14px 32px rgba(19,26,33,0.1); }
.card.private { border-radius: 16px; border: 1px solid rgba(19,26,33,0.12); box-shadow: none; }
.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: 14px; }

.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: #fff; font-size: 13px; color: var(--muted); border-radius: var(--r); box-shadow: 0 10px 24px rgba(19,26,33,0.08); }
.quote-card strong { display: block; margin-top: 10px; color: var(--ink); font-size: 12px; }
@keyframes marquee { to { transform: translateX(-50%); } }

.unlock { max-width: 720px; margin: 0 auto; display: grid; gap: 12px; }
.unlock .step-c { display: grid; grid-template-columns: 46px 1fr auto; gap: 14px; align-items: center; background: #fff; border-radius: var(--r); padding: 16px 18px; box-shadow: 0 14px 30px rgba(19,26,33,0.1); }
.unlock .lv { width: 46px; height: 46px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: var(--ice-l); color: var(--ice-d); font-weight: 800; }
.unlock .step-c:nth-child(2) { margin-left: 30px; }
.unlock .step-c:nth-child(3) { margin-left: 60px; }
.unlock .step-c:nth-child(4) { margin-left: 90px; }
.platforms { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 22px; }
.plat { text-align: center; padding: 14px 8px; border-radius: var(--r); background: #fff; box-shadow: 0 10px 24px rgba(19,26,33,0.08); }

.faq-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.faq-tabs button { border: 0; border-radius: 999px; background: #fff; padding: 9px 18px; cursor: pointer; box-shadow: 0 8px 20px rgba(19,26,33,0.08); }
.faq-tabs button.is-on { background: var(--ice-d); color: #fff; }
.acc { border-radius: var(--r); box-shadow: 0 12px 26px rgba(19,26,33,0.08); overflow: hidden; margin-bottom: 12px; background: #fff; }
.acc-btn {
  width: 100%; text-align: left; padding: 17px 20px; border: 0; background: transparent;
  cursor: pointer; font-size: 15px; font-weight: 700; display: flex; justify-content: space-between;
}
.acc-panel { display: none; padding: 0 20px 18px; color: var(--muted); }
.acc.is-on .acc-panel { display: block; }
.acc[data-cat].is-hide { display: none; }

.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 { position: relative; background: rgba(238,241,243,0.95); }
body.sub .crumbs { padding-top: 12px; }

.site-foot { background: #f7f8f8; min-width: var(--foot-min); padding: 40px 0 24px; color: #6a6560; text-align: center; }
.foot-inner { width: var(--foot-min); max-width: calc(100% - 40px); margin: 0 auto; }
.foot-logo { width: 150px; margin: 0 auto 12px; display: block; }
.foot-nav { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 16px; text-align: left; }
.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; margin: 0 auto; }

@media (max-width: 1180px) { .site-foot, .foot-inner { min-width: 0; width: 100%; } }
@media (max-width: 930px) {
  .hero h1 { font-size: 32px; }
  .cards-3 { grid-template-columns: 1fr; }
  .mason { column-count: 2; }
  .sell-item { width: 43%; margin-bottom: 22px; }
  .icon-grid, .platforms { grid-template-columns: 1fr 1fr; }
  .unlock .step-c:nth-child(n) { margin-left: 0; }
  .rail { display: none; }
  .foot-nav { flex-wrap: wrap; }
  .split, .split.rev { grid-template-columns: 1fr; }
  .nav-mid { display: none; }
}
@media (max-width: 770px) {
  .sell-item { width: 100%; margin-left: 0; }
  .sell-row { margin-left: 0; }
  .mason { column-count: 1; }
}