/* 咸帮帮落地页 — 闲鱼黄品牌 */
.landing {
  --xy-yellow: #ffda00;
  background:
    radial-gradient(ellipse 70% 50% at 10% 0%, rgba(255, 218, 0, 0.22), transparent 55%),
    radial-gradient(ellipse 50% 40% at 100% 20%, rgba(255, 218, 0, 0.12), transparent 50%),
    #f7f6f1;
  color: var(--ink);
  min-height: 100vh;
}
.lp-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem clamp(1.25rem, 4vw, 3rem);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(230, 184, 0, 0.18);
  position: sticky;
  top: 0;
  z-index: 20;
}
.lp-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  font-size: 1.15rem;
}
.lp-brand:hover { text-decoration: none; color: var(--ink); }
.lp-logo {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--xy-yellow);
  border: 2px solid rgba(255, 218, 0, 0.7);
}
.lp-brand picture { line-height: 0; }
.lp-name {
  font-family: "Noto Serif SC", "Outfit", serif;
  letter-spacing: 0.04em;
}
.lp-nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}
.lp-nav-actions > a:not(.btn) {
  color: var(--muted);
  font-weight: 500;
  text-decoration: none;
}
.lp-nav-actions > a:not(.btn):hover { color: var(--ink); }

.lp-hero {
  position: relative;
  min-height: calc(100vh - 76px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(2.5rem, 7vw, 5rem) clamp(1.25rem, 4vw, 3rem);
  overflow: hidden;
}
.lp-hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(28, 26, 20, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 70% 40%, rgba(255, 218, 0, 0.35), transparent 42%);
  pointer-events: none;
}
.lp-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
  text-align: center;
  margin: 0 auto;
  animation: lp-rise 0.55s ease both;
}
@keyframes lp-rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}
.lp-hero-brand {
  margin-bottom: 1.1rem;
}
.lp-hero-logo {
  width: min(168px, 42vw);
  height: auto;
  border-radius: 50%;
  display: block;
  margin: 0 auto;
  box-shadow: 0 16px 40px rgba(28, 26, 20, 0.18);
  animation: lp-float 4.5s ease-in-out infinite;
}
@keyframes lp-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.lp-eyebrow {
  margin: 0 0 0.65rem;
  color: #9a7a00;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.lp-title {
  margin: 0;
  font-family: "Noto Serif SC", "Outfit", serif;
  font-size: clamp(2.4rem, 6vw, 3.5rem);
  line-height: 1.12;
  letter-spacing: 0.06em;
  color: #1a1a1a;
}
.lp-lead {
  margin: 1rem auto 0;
  max-width: 32rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}
.lp-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
  justify-content: center;
}
.lp-cta .btn {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.lp-cta .btn:hover {
  transform: translateY(-2px);
}
.lp-cta .btn.primary {
  box-shadow: 0 8px 20px rgba(230, 184, 0, 0.35);
}

.lp-section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 3.5rem clamp(1.25rem, 4vw, 3rem) 2rem;
}
.lp-section h2 {
  margin: 0;
  font-size: 1.55rem;
  letter-spacing: -0.02em;
}
.lp-section-desc {
  margin: 0.55rem 0 0;
  color: var(--muted);
  max-width: 36rem;
  line-height: 1.6;
}
.lp-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(230, 184, 0, 0.2);
}
.lp-features article h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}
.lp-features article p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.94rem;
}
.lp-announce p {
  margin: 0.75rem 0 0;
  color: var(--muted);
  line-height: 1.7;
}

/* 首页公告弹窗 */
.lp-announce-mask {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(20, 18, 12, 0.48);
  backdrop-filter: blur(3px);
  opacity: 0;
  transition: opacity 0.2s ease;
}
.lp-announce-mask.show { opacity: 1; }
.lp-announce-mask.hide { opacity: 0; }
.lp-announce-panel {
  width: min(420px, 100%);
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 20px 48px rgba(28, 26, 20, 0.22);
  padding: 1.15rem 1.25rem 1.1rem;
  transform: translateY(10px) scale(0.98);
  transition: transform 0.2s ease;
}
.lp-announce-mask.show .lp-announce-panel { transform: none; }
.lp-announce-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}
.lp-announce-head h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 650;
}
.lp-announce-close {
  border: 0;
  background: #f5f3ea;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1;
}
.lp-announce-close:hover { color: var(--ink); background: #ebe6d8; }
.lp-announce-body {
  margin: 0.85rem 0 1.1rem;
  color: var(--ink);
  font-size: 0.95rem;
  line-height: 1.65;
  word-break: break-word;
  max-height: min(50vh, 320px);
  overflow: auto;
}
.lp-announce-actions {
  display: flex;
  justify-content: flex-end;
}

.lp-footer {
  max-width: 1120px;
  margin: 2rem auto 0;
  padding: 1.75rem clamp(1.25rem, 4vw, 3rem) 2.5rem;
  border-top: 1px solid rgba(230, 184, 0, 0.18);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}
.lp-footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.lp-footer-brand img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--xy-yellow);
}
.lp-footer strong { display: block; margin-bottom: 0.15rem; }
.lp-footer-links {
  display: flex;
  gap: 1rem;
}
.lp-footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.lp-footer-links a:hover { color: var(--ink); }

@media (max-width: 900px) {
  .lp-hero { min-height: auto; padding-top: 2.25rem; padding-bottom: 3rem; }
  .lp-features { grid-template-columns: 1fr; gap: 1.5rem; }
}

.install-body .brand-kicker {
  letter-spacing: 0.12em;
  font-size: 0.68rem;
  text-transform: uppercase;
}