:root {
  --mint: #58a98c;
  --mint-d: #2e6b54;
  --mint-l: #cde6da;
  --ink: #131c17;
  --muted: #6b7a70;
  --paper: #eef1ea;
  --max: 1100px;
  --foot-min: 1180px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 12%, rgba(88, 169, 140, 0.16), transparent 40%),
    radial-gradient(circle at 86% 78%, rgba(205, 230, 218, 0.6), transparent 44%),
    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; }

.giant { position: absolute; right: 0; top: -20px; font-size: 120px; line-height: 1; color: rgba(88, 169, 140, 0.18); font-weight: 900; pointer-events: none; }

.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(--mint-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: 46px;
  padding: 0 24px;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(180deg, #74c3a4, var(--mint));
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  box-shadow: 0 6px 0 var(--mint-d), 0 12px 22px rgba(46, 107, 84, 0.3);
}
.btn:active { transform: translateY(3px); box-shadow: 0 3px 0 var(--mint-d); }
.btn-ghost { background: linear-gradient(180deg, #fff, #eef1ea); color: var(--ink); box-shadow: 0 6px 0 #d4ddd0; }
.btn-ghost:active { box-shadow: 0 3px 0 #d4ddd0; }

.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; }
.top-cta { margin-left: auto; display: flex; gap: 10px; align-items: center; font-size: 12px; }
.top-cta .btn { min-height: 34px; padding: 0 14px; box-shadow: 0 3px 0 var(--mint-d); }

.side-nav {
  position: fixed; right: 16px; top: 50%; transform: translateY(-50%); z-index: 70;
  writing-mode: vertical-rl; letter-spacing: 0.22em;
  background: rgba(255,255,255,0.9); border-radius: 16px; padding: 16px 8px;
  box-shadow: 0 8px 22px rgba(19,28,23,0.14); font-size: 12px;
}
.side-nav a { display: inline-block; padding: 8px 0; color: var(--muted); }
.side-nav a:hover { color: var(--ink); }

.hero {
  position: relative;
  min-height: 100vh;
  padding: 120px 0 60px;
  overflow: hidden;
  background: linear-gradient(180deg, #dcebe2, #cbe2d6);
  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(238,241,234,0.04), rgba(46,107,84,0.16)); }
.hero-inner { position: relative; z-index: 3; }
.float-banner { display: inline-block; margin-bottom: 14px; padding: 6px 14px; border-radius: 999px; background: #fff; color: var(--ink); font-size: 12px; box-shadow: 0 4px 12px rgba(19,28,23,0.12); }
.hero h1 { margin: 0 0 8px; font-size: 48px; font-weight: 900; line-height: 1.2; }
.hero .sub { margin: 0 0 18px; font-size: 17px; color: var(--mint-d); }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 20px; }
.stage { perspective: 900px; min-height: 290px; position: relative; max-width: 640px; margin: 0 auto; }
.pc, .phone { position: absolute; background: #20302a; overflow: hidden; }
.pc { width: 420px; height: 250px; left: 16px; top: 16px; border-radius: 12px; transform: rotateY(-14deg) rotateX(7deg); box-shadow: 0 18px 0 rgba(46,107,84,0.25), 0 24px 40px rgba(19,28,23,0.25); }
.phone { width: 118px; height: 220px; right: 26px; top: 40px; border-radius: 18px; transform: rotateY(16deg); box-shadow: 0 14px 0 rgba(46,107,84,0.25), 0 20px 34px rgba(19,28,23,0.25); }
.pc img, .phone img { width: 100%; height: 100%; object-fit: cover; }
.orbit { display: flex; justify-content: space-between; max-width: 720px; margin: 0 auto 8px; font-size: 12px; color: var(--muted); }

.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: #cde6da; border-radius: 14px; box-shadow: 0 6px 0 rgba(46,107,84,0.18); }
.sell-item h3 { margin: 0 0 6px; font-size: 16px; }
.sell-item p { margin: 0; text-align: left; color: var(--muted); font-size: 13px; }

.acc { border-radius: 14px; overflow: hidden; margin-bottom: 12px; background: #fff; box-shadow: 0 6px 0 rgba(46,107,84,0.12); }
.acc-btn {
  width: 100%; text-align: left; padding: 17px 20px; border: 0; background: transparent;
  cursor: pointer; font-size: 16px; font-weight: 800; display: flex; justify-content: space-between;
}
.acc-panel { display: none; padding: 0 20px 18px; }
.acc.is-on .acc-panel { display: block; }
.acc-panel .row { display: grid; grid-template-columns: 1fr 200px; gap: 14px; align-items: center; }
.acc-panel img { width: 200px; height: 130px; object-fit: cover; border-radius: 10px; }
.acc-panel p { margin: 0; color: var(--muted); font-size: 14px; }

.icon-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.icon-cell { padding: 16px 14px; min-height: 112px; border-radius: 14px; background: #fff; box-shadow: 0 5px 0 rgba(46,107,84,0.12); }
.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(--mint-d); padding: 10px 20px; border-radius: 999px; box-shadow: 0 4px 0 #d4ddd0; }
.oa-banner { width: 100%; max-width: 460px; margin: 0 0 22px; background: #2a5a4a; border-radius: 14px; }

.tree { width: 100%; max-width: 760px; margin: 0 auto; }
.pulse { stroke-dasharray: 8 10; animation: dash 18s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -240; } }
.node { fill: #fff; stroke: var(--mint); stroke-width: 2; }
.on { fill: var(--mint-d); }
.live { font-size: 12px; color: var(--muted); text-align: center; }

.badges { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.badge { padding: 10px 16px; border-radius: 999px; background: #fff; font-size: 12px; box-shadow: 0 4px 0 rgba(46,107,84,0.15); font-weight: 700; }

.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.card { padding: 22px; min-height: 160px; border-radius: 14px; background: #fff; box-shadow: 0 6px 0 rgba(46,107,84,0.12); }
.card.private { border-radius: 16px; border: 1px solid rgba(19,28,23,0.12); 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: 10px; }

.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: 12px; box-shadow: 0 5px 0 rgba(46,107,84,0.12); }
.quote-card strong { display: block; margin-top: 10px; color: var(--ink); font-size: 12px; }
@keyframes marquee { to { transform: translateX(-50%); } }

.plat-tabs { display: flex; gap: 8px; justify-content: center; margin-bottom: 18px; flex-wrap: wrap; }
.plat-tabs button { border: 0; background: #fff; padding: 10px 20px; cursor: pointer; border-radius: 999px; box-shadow: 0 4px 0 #d4ddd0; font-weight: 700; }
.plat-tabs button.is-on { background: var(--mint); color: #fff; box-shadow: 0 4px 0 var(--mint-d); }
.plat-panes article { display: none; }
.plat-panes article.is-on { display: block; }
.plat-pane { text-align: center; }
.plat-pane .card { max-width: 560px; margin: 0 auto; }
.platforms { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 18px; }
.plat { text-align: center; padding: 14px 8px; border-radius: 12px; background: #fff; box-shadow: 0 4px 0 rgba(46,107,84,0.12); }

.chat { max-width: 680px; margin: 0 auto; display: grid; gap: 12px; }
.msg { max-width: 82%; padding: 12px 16px; border-radius: 18px; font-size: 14px; }
.q { justify-self: end; background: var(--mint-d); color: #fff; border-bottom-right-radius: 4px; }
.a { justify-self: start; background: #fff; color: var(--muted); border-bottom-left-radius: 4px; box-shadow: 0 4px 0 rgba(46,107,84,0.12); }

.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(238,241,234,0.95); }
body.sub .crumbs { padding-top: 12px; }

.site-foot { background: transparent; min-width: var(--foot-min); padding: 40px 0 40px; }
.foot-inner {
  width: var(--foot-min); max-width: calc(100% - 40px); margin: 0 auto;
  background: #f7f8f8; color: #6a6560;
  border-radius: 22px; padding: 32px 36px 22px;
  box-shadow: 0 18px 40px rgba(19,28,23,0.16);
}
.foot-logo { width: 170px; margin-bottom: 12px; }
.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 { grid-template-columns: 1fr; }
  .acc-panel .row { grid-template-columns: 1fr; }
  .sell-item { width: 43%; margin-bottom: 22px; }
  .icon-grid, .platforms { grid-template-columns: 1fr 1fr; }
  .side-nav { display: none; }
  .pc { position: relative; left: auto; transform: none; width: 100%; }
  .phone { display: none; }
  .giant { font-size: 64px; }
  .foot-nav { flex-wrap: wrap; }
}
@media (max-width: 770px) {
  .sell-item { width: 100%; margin-left: 0; }
  .sell-row { margin-left: 0; }
}