:root {
  --cu: #2a9d8f;
  --cu-d: #17685d;
  --glow: #7ef0de;
  --silk: #cfd8d3;
  --paper: #d6ddd8;
  --ink: #1c2a27;
  --muted: #5d6b67;
  --line: rgba(23, 104, 93, 0.16);
  --max: 1100px;
  --foot-min: 1180px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: 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; }

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 90;
  opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.45'/%3E%3C/svg%3E");
}
.silk {
  background-image: linear-gradient(115deg, rgba(255,255,255,0.28), transparent 42%, rgba(126,240,222,0.12) 58%, transparent);
}
.wrap { width: var(--max); max-width: calc(100% - 40px); margin: 0 auto; }
.kicker { font-size: 11px; letter-spacing: 0.22em; color: var(--cu-d); }
.h2 { margin: 8px 0 16px; font-size: 28px; font-weight: 600; }
.lead { max-width: 640px; color: var(--muted); }
.vtitle {
  writing-mode: vertical-rl;
  letter-spacing: 0.28em;
  font-size: 18px;
  color: var(--cu-d);
  margin: 0 16px 0 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border: 0;
  border-radius: 8px;
  color: #f4fffc;
  letter-spacing: 0.08em;
  font-size: 13px;
  cursor: pointer;
  background: linear-gradient(#48c4b4, #17685d);
  box-shadow: 0 4px 0 #0e3f38, 0 10px 18px rgba(14,63,56,0.28), inset 0 1px 0 rgba(255,255,255,0.35);
}
.btn:active { transform: translateY(3px); box-shadow: 0 1px 0 #0e3f38, inset 0 2px 4px rgba(0,0,0,0.2); }
.btn-ghost {
  background: linear-gradient(rgba(255,255,255,0.12), rgba(255,255,255,0.02));
  color: #f4fffc;
  box-shadow: 0 4px 0 #0e3f38, inset 0 1px 0 rgba(126,240,222,0.35);
}
.btn-ink { background: linear-gradient(#2a3d39, #1c2a27); }

.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: 14px; flex: 1; justify-content: center; font-size: 13px; color: #f4fffc; }
.nav-main > li { position: relative; }
.nav-main a:hover { color: var(--glow); }
.search {
  width: 168px;
  height: 34px;
  padding: 0 12px;
  border: 0;
  border-radius: 8px;
  background: rgba(244,255,252,0.14);
  color: #f4fffc;
}
.search::placeholder { color: rgba(244,255,252,0.55); }
.mega {
  display: none;
  position: absolute;
  top: 130%; left: 50%;
  transform: translateX(-50%);
  width: 520px;
  padding: 18px;
  background: #e7eeea;
  color: var(--ink);
  z-index: 50;
  grid-template-columns: 1.2fr 1fr;
  gap: 12px;
  box-shadow: 0 16px 30px rgba(14,63,56,0.18);
}
.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 { color: #f4fffc; font-size: 12px; }
.menu-toggle { display: none; margin-left: auto; border: 0; background: var(--cu); color: #fff; padding: 8px 12px; border-radius: 8px; }

.hero {
  position: relative;
  min-height: 100vh;
  padding: 110px 0 64px;
  overflow: hidden;
  background: #16332e;
  color: #f4fffc;
}
.globe { position: absolute; right: -10%; top: 0; width: 760px; height: 760px; opacity: 0.34; }
.spin { transform-origin: 200px 200px; animation: spin 46s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.hero-mask {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(22,51,46,0.2), rgba(22,51,46,0.78));
}
.hero-inner { position: relative; z-index: 2; }
.hero-3 {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr 0.7fr;
  gap: 18px;
  align-items: center;
}
.float-banner { display: inline-block; margin-bottom: 16px; font-size: 12px; letter-spacing: 0.14em; color: var(--glow); }
.hero h1 { margin: 0 0 12px; font-size: 48px; font-weight: 600; letter-spacing: 0.06em; }
.hero .sub { margin: 0 0 24px; font-size: 18px; color: rgba(244,255,252,0.72); }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-shot { width: 100%; min-height: 280px; object-fit: contain; background: rgba(0,0,0,0.18); border-radius: 12px; }
.hero-data { text-align: center; }
.hero-data strong { display: block; font-size: 28px; color: var(--glow); }
.hero-data span { font-size: 12px; color: rgba(244,255,252,0.7); }

.section { padding: 80px 0; }
.section-head { display: flex; align-items: flex-start; }
.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: #c5d0cb; }
.sell-item h3 { margin: 0 0 6px; font-size: 16px; }
.sell-item p { margin: 0; text-align: left; color: var(--muted); font-size: 13px; }

.flip-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.flip { perspective: 900px; min-height: 180px; }
.flip-inner { position: relative; width: 100%; height: 180px; transition: transform 0.55s; transform-style: preserve-3d; }
.flip:hover .flip-inner { transform: rotateY(180deg); }
.flip-face {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  padding: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.45), rgba(255,255,255,0.18));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.55);
}
.flip-back { transform: rotateY(180deg); background: linear-gradient(#2a9d8f, #17685d); color: #f4fffc; }
.flip-face h3 { margin: 0 0 8px; font-size: 17px; }
.flip-face p { margin: 0; font-size: 13px; }
.flip-face img { width: 100%; height: 72px; object-fit: cover; margin-bottom: 8px; }

.split { display: grid; grid-template-columns: 1fr 1.05fr; gap: 28px; align-items: center; }
.ftabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 18px; }
.ftabs button {
  border: 0; padding: 8px 14px; border-radius: 8px;
  background: rgba(23,104,93,0.08); color: var(--muted); cursor: pointer;
}
.ftabs button.is-on { background: linear-gradient(#48c4b4, #17685d); color: #fff; }
.pane { display: none; }
.pane.is-on { display: block; }
.shot { width: 100%; min-height: 260px; object-fit: contain; display: none; background: #c5d0cb; }
.shot.is-on { display: block; }

.icon-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.icon-cell { background: rgba(255,255,255,0.32); padding: 18px 14px; min-height: 118px; }
.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; letter-spacing: 0.14em; cursor: pointer; }
.oa-banner { width: 100%; max-width: 460px; margin: 0 0 22px; background: #2a5a4a; }

.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.card { padding: 24px; min-height: 160px; background: rgba(255,255,255,0.3); box-shadow: inset 0 1px 0 rgba(255,255,255,0.5); }
.card.private { border-radius: 16px; border: 1px solid rgba(6,15,26,0.07); background: rgba(255,255,255,0.42); }
.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; }

.rings { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; text-align: center; }
.ring svg { width: 120px; height: 120px; }
.ring strong { display: block; margin-top: 6px; font-size: 18px; color: var(--cu-d); }
.ring span { font-size: 12px; color: var(--muted); }

.quote-hero { text-align: center; padding: 40px 10%; }
.quote-hero p { margin: 0; font-size: 28px; line-height: 1.5; }
.quote-hero b { display: block; margin-top: 16px; font-size: 13px; color: var(--cu-d); font-weight: 500; }

.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(255,255,255,0.38); font-size: 13px; color: var(--muted); }
.quote-card strong { display: block; margin-top: 10px; color: var(--cu-d); font-size: 12px; }
@keyframes marquee { to { transform: translateX(-50%); } }

.plat-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.plat-card { padding: 22px; background: rgba(255,255,255,0.32); min-height: 180px; }
.platforms { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 14px; }
.plat { text-align: center; padding: 14px 8px; background: rgba(23,104,93,0.08); border-radius: 8px; }

.faq-split { display: grid; grid-template-columns: 280px 1fr; gap: 20px; min-height: 240px; }
.faq-q button {
  display: block; width: 100%; text-align: left;
  border: 0; padding: 12px 10px; background: none; cursor: pointer;
  box-shadow: inset 0 -1px 0 var(--line);
}
.faq-q button.is-on { color: var(--cu-d); background: rgba(42,157,143,0.08); }
.faq-a { padding: 18px; background: rgba(255,255,255,0.34); min-height: 220px; }
.faq-a h3 { margin: 0 0 10px; font-size: 18px; }

.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(214,221,216,0.94); }
body.sub .nav-main, body.sub .link { color: var(--ink); }
body.sub .search { background: rgba(23,104,93,0.08); color: var(--ink); }

.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-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 28px; }
.foot-logo { width: 168px; }
.subscribe { display: flex; gap: 8px; }
.subscribe input {
  width: 240px; height: 42px; padding: 0 12px; border: 0;
  background: rgba(23,104,93,0.08); border-radius: 8px;
}
.foot-nav { display: flex; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.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; }
  .hero-3, .split, .cards-3, .flip-grid, .rings, .plat-cards, .faq-split, .foot-top { grid-template-columns: 1fr; }
  .hero-3 { display: block; }
  .vtitle { writing-mode: horizontal-tb; margin: 0 0 8px; }
  .sell-item { width: 43%; margin-bottom: 22px; }
  .icon-grid, .platforms { grid-template-columns: 1fr 1fr; }
  .foot-nav { flex-wrap: wrap; }
  .search { width: 120px; }
}
@media (max-width: 770px) {
  .menu-toggle { display: inline-flex; }
  .nav-main, .top-cta { display: none; }
  .index-top.is-open .nav-main {
    display: flex; flex-direction: column; position: absolute; top: 100%; left: 20px; right: 20px;
    background: #e7eeea; color: var(--ink); padding: 16px; gap: 10px;
  }
  .sell-item { width: 100%; margin-left: 0; }
  .sell-row { margin-left: 0; }
}