/* ============================================================
   site-nav.css — unified fixed top-tab navigation + page shell
   Shared across all navigation-level pages of the collection site.
   ============================================================ */
:root {
  --sn-pink: #f472b6;
  --sn-purple: #a78bfa;
  --sn-ink: #202635;
  --sn-muted: #6b7183;
  --sn-line: rgba(244, 114, 182, 0.18);
  --sn-cream: #fff9f0;
}

/* ---------- fixed top tab bar (refined) ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  height: 68px;
  padding: 0 max(1rem, calc((100% - 1220px) / 2));
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  box-shadow: 0 6px 24px -14px rgba(120, 80, 130, 0.35);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
/* gradient hairline at the very bottom */
.site-nav::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: linear-gradient(90deg, var(--sn-pink), var(--sn-purple) 45%, #5eead4 100%);
  opacity: 0.5;
}

.snav-brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--sn-ink); text-decoration: none; flex: none; }
.snav-mark {
  position: relative; width: 42px; height: 42px; border-radius: 14px; display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 0.92rem; letter-spacing: 0.04em;
  background: linear-gradient(135deg, var(--sn-pink), var(--sn-purple));
  box-shadow: 0 6px 14px -5px rgba(167, 139, 250, 0.7), inset 0 1px 0 rgba(255,255,255,0.5);
}
.snav-mark::after { content: ""; position: absolute; inset: 4px; border-radius: 10px; border: 1.5px solid rgba(255,255,255,0.35); }
.snav-brandtext b { display: block; font-size: 1.02rem; line-height: 1.05; letter-spacing: -0.01em; }
.snav-brandtext small { color: var(--sn-pink); font-size: 0.68rem; letter-spacing: 0.02em; }

.snav-tabs { flex: 1 1 auto; display: flex; align-items: center; gap: 0.15rem; overflow-x: auto; margin-left: 0.6rem; scrollbar-width: none; }
.snav-tabs::-webkit-scrollbar { display: none; }
.snav-tab {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.5rem 0.85rem; border-radius: 12px;
  color: var(--sn-muted); text-decoration: none; font-size: 0.93rem; font-weight: 600; white-space: nowrap;
  transition: background 0.2s, color 0.2s, transform 0.15s, box-shadow 0.2s;
}
.snav-tab .ic { display: inline-flex; }
.snav-tab .ic svg { width: 18px; height: 18px; display: block; }
.snav-tab:hover { background: #fdeef6; color: #d84f9a; transform: translateY(-1px); }
.snav-tab.active {
  color: #fff;
  background: linear-gradient(135deg, var(--sn-pink), var(--sn-purple));
  box-shadow: 0 8px 18px -7px rgba(216, 79, 154, 0.7);
}
.snav-tab .soon { font-size: 0.6rem; font-weight: 700; opacity: 0.85; padding: 0.05rem 0.3rem; border-radius: 6px; background: rgba(255,255,255,0.25); }

.snav-right { flex: none; margin-left: auto; display: inline-flex; align-items: center; gap: 0.5rem; }
.snav-lang {
  padding: 0.42rem 0.75rem; border-radius: 999px; border: 1px solid var(--sn-line);
  background: rgba(255,255,255,0.6); color: var(--sn-muted); font: inherit; font-size: 0.82rem; font-weight: 700;
  cursor: pointer; white-space: nowrap; transition: border-color 0.2s, color 0.2s, transform 0.15s;
}
.snav-lang:hover { border-color: var(--sn-pink); color: #d84f9a; transform: translateY(-1px); }
.snav-login {
  display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.52rem 1.15rem; border-radius: 999px;
  background: linear-gradient(135deg, var(--sn-pink), var(--sn-purple)); color: #fff; font-weight: 700; text-decoration: none; font-size: 0.9rem;
  box-shadow: 0 8px 18px -8px rgba(167, 139, 250, 0.8); transition: transform 0.15s, box-shadow 0.2s, filter 0.2s;
}
.snav-login .ic svg { width: 17px; height: 17px; display: block; }
.snav-login:hover { transform: translateY(-1px); box-shadow: 0 12px 22px -8px rgba(167, 139, 250, 0.9); filter: brightness(1.04); }

.snav-user {
  display: inline-flex; align-items: center; gap: 0.55rem; text-decoration: none; color: var(--sn-ink);
  padding: 0.28rem 0.85rem 0.28rem 0.32rem; border: 1px solid var(--sn-line); border-radius: 999px;
  background: rgba(255,255,255,0.6); transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
}
.snav-user:hover { transform: translateY(-1px); box-shadow: 0 8px 18px -10px rgba(120,80,130,0.5); }
.snav-user.active { border-color: var(--sn-pink); box-shadow: 0 0 0 2px rgba(244,114,182,0.18); }
.snav-ava {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--sn-pink), var(--sn-purple)); color: #fff; font-weight: 800; flex: none;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.5), 0 0 0 2px rgba(255,255,255,0.85);
}
.snav-uinfo { display: flex; flex-direction: column; gap: 1px; }
.snav-uinfo b { font-size: 0.85rem; line-height: 1.05; white-space: nowrap; }
.snav-coin { display: inline-flex; align-items: center; gap: 0.2rem; font-size: 0.72rem; font-weight: 800; color: #d98a13; line-height: 1; }
.snav-coin svg { width: 14px; height: 14px; display: block; }

@media (max-width: 860px) {
  .snav-brandtext { display: none; }
  .site-nav { gap: 0.5rem; height: 62px; }
  .snav-tab .lb { display: none; }
  .snav-tab { padding: 0.5rem 0.6rem; }
  .snav-tab.active .lb { display: inline; }
  .snav-uinfo { display: none; }
  .snav-login span:last-child { display: none; }
  .snav-login { padding: 0.5rem 0.7rem; }
}

/* ---------- shared page shell (统一分页模板) ---------- */
.page-body {
  min-height: 100vh;
  margin: 0;
  color: var(--sn-ink);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background:
    radial-gradient(circle at 12% 4%, rgba(244, 114, 182, 0.14), transparent 24rem),
    radial-gradient(circle at 88% 8%, rgba(94, 234, 212, 0.16), transparent 22rem),
    var(--sn-cream);
}
.page-wrap { max-width: 1220px; margin: 0 auto; padding: 2rem max(1rem, 4vw) 4rem; }
.page-head { margin-bottom: 1.8rem; }
.page-head .eyebrow { color: var(--sn-pink); font-weight: 700; letter-spacing: 0.08em; font-size: 0.8rem; text-transform: uppercase; }
.page-head h1 { margin: 0.3rem 0 0.5rem; font-size: clamp(1.6rem, 3.5vw, 2.3rem); }
.page-head p { margin: 0; color: var(--sn-muted); font-size: 1.02rem; line-height: 1.6; max-width: 60ch; }
.page-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.3rem; }
.page-section-title { margin: 2.2rem 0 1rem; font-size: 1.3rem; }
.page-foot { text-align: center; padding: 2.5rem 1rem 1rem; color: var(--sn-muted); font-size: 0.9rem; }
.page-foot a { color: var(--sn-pink); font-weight: 600; }

/* generic pastel card */
.uc-card { background: #fff; border: 1px solid var(--sn-line); border-radius: 22px; box-shadow: 0 12px 30px -18px rgba(60, 40, 70, 0.4); padding: 1.4rem; }