:root {
  --ivory: #f7f4ec;
  --paper: #efe8d8;
  --ink: #3a3428;
  --muted: #6e6758;
  --rose: #c9a4a0;
  --sage: #8aa38a;
  --sky: #9bb8c4;
  --dash: 1px dashed rgba(58,52,40,0.45);
  --max: 1100px;
  --foot-min: 1180px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--ivory);
  font-family: "PingFang SC", "Microsoft YaHei", serif;
  font-size: 15px;
  line-height: 1.8;
}
img { max-width: 100%; height: auto; border: 0; vertical-align: middle; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
ul { margin: 0; padding: 0; list-style: none; }
.hand { font-family: "Segoe Script", "KaiTi", "STKaiti", cursive; font-weight: 600; color: #8a4e3c; }

.wash {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 18% 12%, rgba(201,164,160,0.28), transparent 42%),
    radial-gradient(ellipse at 86% 18%, rgba(155,184,196,0.26), transparent 40%),
    radial-gradient(ellipse at 72% 82%, rgba(138,163,138,0.22), transparent 46%);
}
.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 90;
  opacity: 0.14;
  mix-blend-mode: multiply;
  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='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}

.wrap { width: var(--max); max-width: calc(100% - 40px); margin: 0 auto; position: relative; z-index: 1; }
.kicker { font-size: 12px; letter-spacing: 0.22em; 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: 1px dashed var(--ink);
  background: var(--paper);
  color: var(--ink);
  letter-spacing: 0.08em;
  cursor: pointer;
}
.btn-ink { background: var(--ink); color: var(--ivory); border-style: solid; }
.btn-ghost { background: transparent; }

.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: var(--ivory);
  z-index: 50;
  grid-template-columns: 1.2fr 1fr;
  gap: 12px;
  border: 1px dashed var(--ink);
}
.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: 1px dashed var(--ink);
  background: var(--paper);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(58,52,40,0.12);
}
.overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 80;
  background: rgba(247,244,236,0.96);
  padding: 72px 40px;
  overflow: auto;
}
.overlay.is-on { display: block; }
.overlay a { display: inline-block; margin: 0 14px 12px 0; border-bottom: 1px dashed var(--ink); }
.overlay-close {
  position: absolute;
  top: 20px;
  right: 24px;
  border: 1px dashed var(--ink);
  background: var(--paper);
  padding: 8px 14px;
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 100vh;
  padding: 110px 0 0;
  overflow: hidden;
  background: #ebe4d4;
}
.globe { position: absolute; left: 50%; top: 42%; width: 820px; height: 820px; margin: -410px 0 0 -410px; opacity: 0.22; }
.spin { transform-origin: 200px 200px; animation: spin 50s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.hero-mask {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(247,244,236,0.15), rgba(58,52,40,0.18));
}
.hero-inner { position: relative; z-index: 2; text-align: center; padding-bottom: 28px; }
.float-banner {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  border: 1px dashed var(--ink);
  padding: 4px 12px;
}
.hero h1 { margin: 0 0 8px; font-size: 48px; font-weight: 600; }
.hero .sub { margin: 0 0 22px; font-size: 18px; color: var(--muted); }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.hero-stats {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 48px;
  border-top: 1px dashed var(--ink);
  background: rgba(247,244,236,0.82);
}
.hero-stats div { padding: 16px 8px; text-align: center; border-right: 1px dashed var(--ink); }
.hero-stats b { display: block; font-size: 22px; }
.hero-stats span { font-size: 12px; color: var(--muted); }

.section { padding: 80px 0; position: relative; z-index: 1; border-top: 1px dashed rgba(58,52,40,0.2); }
.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: #cfc8ba; border: 1px dashed var(--ink); }
.sell-item h3 { margin: 0 0 6px; font-size: 16px; }
.sell-item p { margin: 0; text-align: left; color: var(--muted); font-size: 13px; }

.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px dashed var(--ink); margin-bottom: 16px; }
.col { padding: 22px; }
.col + .col { border-left: 1px dashed var(--ink); }
.col h3 { margin: 0 0 8px; }
.col p { margin: 0; color: var(--muted); font-size: 14px; }
.shot { width: 100%; min-height: 180px; object-fit: contain; background: #cfc8ba; border: 1px dashed var(--ink); }

.icon-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.icon-cell { background: rgba(255,255,255,0.45); padding: 18px 14px; min-height: 118px; border: 1px dashed var(--ink); }
.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; border-bottom: 1px dashed var(--ink); cursor: pointer; }
.oa-banner { width: 100%; max-width: 460px; margin: 0 0 22px; background: #2a5a4a; border: 1px dashed var(--ink); }

.data-marquee { overflow: hidden; border-top: 1px dashed var(--ink); border-bottom: 1px dashed var(--ink); background: var(--paper); }
.data-track { display: flex; gap: 36px; width: max-content; animation: marquee 40s linear infinite; padding: 14px 0; font-size: 13px; }
.data-track span { white-space: nowrap; }

.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.card { padding: 22px; min-height: 160px; background: rgba(255,255,255,0.4); border: 1px dashed var(--ink); }
.card.private { border-radius: 16px; border: 1px solid rgba(6,15,26,0.07); background: rgba(255,255,255,0.55); }
.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; }

.water {
  column-count: 3;
  column-gap: 12px;
}
.water > * { break-inside: avoid; display: block; margin: 0 0 12px; padding: 16px; border: 1px dashed var(--ink); background: rgba(255,255,255,0.42); }
.water b { display: block; font-size: 28px; margin-bottom: 6px; }

.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(255,255,255,0.5); font-size: 13px; color: var(--muted); border: 1px dashed var(--ink); }
.quote-card strong { display: block; margin-top: 10px; color: var(--ink); font-size: 12px; }
@keyframes marquee { to { transform: translateX(-50%); } }

.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: center; }
.qr {
  width: 168px;
  height: 168px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
  padding: 10px;
  border: 1px dashed var(--ink);
  background: #fff;
}
.qr i { display: block; background: var(--ink); }
.qr i.off { background: transparent; }
.platforms { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 16px; }
.plat { text-align: center; padding: 14px 8px; border: 1px dashed var(--ink); }

.faq-layout { display: grid; grid-template-columns: 200px 1fr; gap: 28px; }
.toc { position: sticky; top: 20px; }
.toc a { display: block; padding: 8px 0; border-bottom: 1px dashed rgba(58,52,40,0.25); font-size: 13px; }
.faq-item { padding: 16px 0; border-bottom: 1px dashed var(--ink); }
.faq-item h3 { margin: 0 0 6px; font-size: 16px; }
.faq-item p { margin: 0; color: var(--muted); font-size: 14px; }

.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(247,244,236,0.94); border-bottom: 1px dashed 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-duo { display: grid; grid-template-columns: 280px 1fr; gap: 32px; margin-bottom: 18px; }
.brand p { margin: 8px 0 0; font-size: 13px; }
.foot-nav { display: flex; justify-content: space-between; gap: 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; border-top: 1px dashed rgba(58,52,40,0.25); padding-top: 14px; }

@media (max-width: 1180px) { .site-foot, .foot-inner { min-width: 0; width: 100%; } }
@media (max-width: 930px) {
  .hero h1 { font-size: 32px; }
  .compare, .duo, .faq-layout, .foot-duo, .cards-3 { grid-template-columns: 1fr; }
  .hero-stats, .water { grid-template-columns: 1fr 1fr; column-count: 2; }
  .sell-item { width: 43%; margin-bottom: 22px; }
  .icon-grid, .platforms { grid-template-columns: 1fr 1fr; }
  .col + .col { border-left: 0; border-top: 1px dashed var(--ink); }
  .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; }
}