/* 品相 · 营销落地页 — 对齐设计稿（桌面左营销 + 右功能区纵向） */
:root {
  --land-primary: #3b6fff;
  --land-primary-hover: #2f5ce6;
  --land-primary-dim: #eaf0ff;
  --land-bg: #f7f8fa;
  --land-trust-bg: #eef0f4;
  --land-card: #ffffff;
  --land-text: #1f2329;
  --land-muted: #6b7280;
  --land-border: #e5e8ec;
  --land-radius: 12px;
  --land-radius-lg: 16px;
  --land-shadow-card: 0 2px 16px rgba(0, 0, 0, 0.05);
  --land-inner-max: 1280px;
}

.land {
  margin: 0;
  width: 100%;
  min-height: 100vh;
  background:
    linear-gradient(180deg, #fff 0, #fff 28rem, var(--land-bg) 28rem),
    var(--land-bg);
  color: var(--land-text);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.land-inner {
  width: 100%;
  max-width: var(--land-inner-max);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
  box-sizing: border-box;
}

.land-main {
  width: 100%;
}

/* ── 顶栏：Logo 左 · 导航中 · 按钮右 ── */
.land-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--land-border);
}
.land-header-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 64px;
  gap: 1rem;
}
.land-logo {
  justify-self: start;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--land-text);
  font-weight: 700;
  font-size: 1.15rem;
}
.land-logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background:
    url("/static/assets/images/brand-mark.svg") center / cover no-repeat,
    var(--land-primary);
  color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
}
.land-nav {
  justify-self: center;
  display: flex;
  gap: 2.5rem;
}
.land-nav a {
  color: var(--land-text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}
.land-nav a:hover,
.land-nav a.is-active {
  color: var(--land-primary);
}
.land-header-actions-wrap {
  justify-self: end;
  display: flex;
  gap: 0.5rem;
}
.land-nav-toggle {
  display: none;
  justify-self: end;
  padding: 0.35rem;
  border: none;
  background: transparent;
  cursor: pointer;
}

/* ── 按钮 ── */
.land-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.45rem 1.2rem;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  font-family: inherit;
  transition: background 0.15s, box-shadow 0.15s;
}
.land-btn-primary {
  background: var(--land-primary);
  color: #fff;
}
.land-btn-primary:hover { background: var(--land-primary-hover); }
.land-btn-outline {
  background: #fff;
  color: var(--land-primary);
  border: 1.5px solid var(--land-primary);
}
.land-btn-outline:hover { background: var(--land-primary-dim); }
.land-btn-lg {
  padding: 0.7rem 1.75rem;
  font-size: 0.95rem;
  border-radius: 10px;
  min-width: 100px;
}
.land-btn-block {
  width: 100%;
  max-width: 100%;
  padding: 0.95rem 1.5rem;
  font-size: 1rem;
  border-radius: 10px;
}

/* ── Hero 首屏（白底） ── */
.land-hero {
  width: 100%;
  padding: clamp(2.5rem, 5vw, 4.4rem) 0 clamp(2rem, 3vw, 2.8rem);
  background:
    radial-gradient(circle at 78% 24%, rgba(59, 111, 255, 0.12), transparent 34%),
    #fff;
}
.land-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: center;
}
.land-hero h1 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.6rem, 2.8vw, 2.15rem);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.01em;
}
.land-hero-sub {
  margin: 0 0 0.5rem;
  color: var(--land-muted);
  font-size: clamp(0.9rem, 1.4vw, 1rem);
  line-height: 1.65;
}
.land-hero-flow {
  margin: 0 0 1.1rem;
  font-size: 0.85rem;
  color: #8a909a;
  line-height: 1.55;
}
.land-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.35rem;
}
.land-tag {
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: #f0f2f5;
  color: #4b5563;
  border: 1px solid var(--land-border);
}
.land-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 0.6rem;
}
.land-hero-note {
  margin: 0;
  font-size: 0.8rem;
  color: #9ca3af;
}
.land-hero-visual {
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: var(--land-radius-lg);
  overflow: hidden;
  max-width: 520px;
  width: 100%;
  justify-self: center;
  border: 1px solid rgba(229, 232, 236, 0.8);
  box-shadow: 0 22px 54px rgba(31, 35, 41, 0.12);
}
.land-hero-img {
  width: 100%;
  max-width: 520px;
  height: auto;
  display: block;
  border-radius: var(--land-radius-lg);
}

/* ── 双平台（灰底延续） ── */
.land-platforms {
  width: 100%;
  padding: 0 0 1.75rem;
  background: var(--land-bg);
}
.land-platform-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.land-platform-card {
  background: var(--land-card);
  border: 1px solid var(--land-border);
  border-radius: var(--land-radius);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--land-shadow-card);
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.land-platform-card:hover {
  transform: translateY(-2px);
  border-color: rgba(59, 111, 255, 0.28);
  box-shadow: 0 12px 28px rgba(31, 35, 41, 0.08);
}
.land-platform-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 700;
}
.land-platform-card p {
  margin: 0 0 0.9rem;
  font-size: 0.82rem;
  color: var(--land-muted);
  line-height: 1.5;
}
.land-platform-icons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.land-picon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
}
.land-picon.dom-tao { background: #ff5000; }
.land-picon.dom-mao { background: #ff0036; }
.land-picon.dom-jing { background: #e1251b; }
.land-picon.dom-dou { background: #111; }
.land-picon.x-amz { background: #ff9900; color: #232f3e; }
.land-picon.x-shopee { background: #ee4d2d; }
.land-picon.x-tiktok { background: #010101; }
.land-picon.x-ali { background: #e62e04; }
.land-picon.x-temu { background: #fb7701; }
.land-langs {
  margin: 1rem 0 0;
  text-align: center;
  font-size: 0.8rem;
  color: #8a909a;
}

/* ── 信任条：整宽灰条 ── */
.land-trust {
  width: 100%;
  background: var(--land-trust-bg);
  padding: 0.9rem 0;
  border-top: 1px solid var(--land-border);
  border-bottom: 1px solid var(--land-border);
}
.land-trust-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem 1.5rem;
}
.land-trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--land-muted);
  font-weight: 500;
  white-space: nowrap;
}
.land-trust-check {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--land-primary);
}

/* ── 营销区底部四步 ── */
.land-flow-marketing {
  width: 100%;
  background: var(--land-bg);
  padding: 1.75rem 0 2.5rem;
}
.land-flow-marketing-note {
  margin: 0 0 1rem;
  text-align: center;
  font-size: 0.8rem;
  color: #8a909a;
}
.land-flow-marketing-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem 0.65rem;
}
.land-flow-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  font-weight: 600;
  color: var(--land-text);
}
.land-flow-chip em {
  font-style: normal;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--land-primary);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
}
.land-flow-marketing-arrow {
  color: #c5c9d0;
  font-size: 1.15rem;
  user-select: none;
}

/* ── 功能区：顶四步图标条 + 2×3 白卡 ── */
.land-func {
  width: 100%;
  padding: clamp(2rem, 4vw, 3rem) 0 clamp(2.5rem, 4vw, 3.5rem);
  background: #fff;
  border-top: 1px solid var(--land-border);
}
.land-flow-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-bottom: clamp(1.75rem, 3vw, 2.5rem);
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}
.land-flow-bar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.75rem;
  text-align: center;
  position: relative;
}
.land-flow-bar-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: var(--land-border);
}
.land-flow-bar-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--land-primary-dim);
  color: var(--land-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.land-flow-bar-icon svg {
  width: 24px;
  height: 24px;
}
.land-flow-bar-item span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--land-text);
}

.land-feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
  background: var(--land-bg);
  padding: 1.25rem;
  border-radius: var(--land-radius-lg);
}
.land-feat-card {
  background: var(--land-card);
  border: 1px solid var(--land-border);
  border-radius: var(--land-radius);
  padding: 1.35rem 1.2rem;
  box-shadow: var(--land-shadow-card);
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.land-feat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(59, 111, 255, 0.28);
  box-shadow: 0 12px 28px rgba(31, 35, 41, 0.08);
}
.land-feat-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--land-primary-dim);
  color: var(--land-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.85rem;
}
.land-feat-icon svg {
  width: 24px;
  height: 24px;
}
.land-feat-card h3 {
  margin: 0 0 0.4rem;
  font-size: 0.98rem;
  font-weight: 700;
}
.land-feat-card p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--land-muted);
  line-height: 1.6;
}

/* ── 规格一行 ── */
.land-specs-band {
  width: 100%;
  padding: 1rem 0;
  background: var(--land-bg);
  border-top: 1px solid var(--land-border);
}
.land-specs-band p {
  margin: 0;
  text-align: center;
  font-size: 0.82rem;
  color: #8a909a;
}

/* ── 三入口胶囊 ── */
.land-modes {
  width: 100%;
  padding: 1.5rem 0 1.75rem;
  background: var(--land-bg);
  text-align: center;
}
.land-mode-pills {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.2rem;
  padding: 0.25rem;
  background: #fff;
  border: 1px solid var(--land-border);
  border-radius: 999px;
}
.land-mode-pill {
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--land-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, color 0.15s;
}
.land-mode-pill:hover:not(.on) {
  background: var(--land-primary-dim);
  color: var(--land-primary);
}
.land-mode-pill.on {
  background: var(--land-primary);
  color: #fff;
}
.land-mode-pill.on::before {
  content: "✓";
  margin-right: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
}

.land-mode-intros {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  text-align: left;
}
.land-mode-intro-card {
  padding: 1.15rem 1.2rem;
  background: #fff;
  border: 1px solid var(--land-border);
  border-radius: var(--land-radius);
  box-shadow: var(--land-shadow-card);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.land-mode-intro-card.on {
  border-color: var(--land-primary);
  box-shadow: 0 4px 20px rgba(59, 111, 255, 0.12);
}
.land-mode-intro-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--land-text);
}
.land-mode-intro-card > p:first-of-type {
  margin: 0 0 0.65rem;
  font-size: 0.84rem;
  color: var(--land-muted);
  line-height: 1.6;
}
.land-mode-intro-card ul {
  margin: 0 0 0.75rem;
  padding-left: 1.15rem;
  font-size: 0.82rem;
  color: var(--land-muted);
  line-height: 1.65;
}
.land-mode-intro-card ul li {
  margin-bottom: 0.2rem;
}
.land-mode-intro-hint {
  margin: 0;
  font-size: 0.78rem;
  color: #9ca3af;
  line-height: 1.5;
}

/* ── 底部 CTA（全宽蓝钮） ── */
.land-cta {
  width: 100%;
  padding: 0 0 clamp(3rem, 6vw, 4rem);
  background: var(--land-bg);
  text-align: center;
}
.land-cta .land-inner {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  max-width: 720px;
}
.land-cta h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 700;
}

.land-footer {
  width: 100%;
  padding: 1.25rem 0 1.75rem;
  text-align: center;
  font-size: 0.78rem;
  color: #9ca3af;
  background: #fff;
  border-top: 1px solid var(--land-border);
}

/* ── Auth ── */
.land-auth-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.land-auth-modal[hidden] { display: none !important; }
.land-auth-panel {
  width: 100%;
  max-width: 400px;
  background: #fff;
  border-radius: var(--land-radius-lg);
  padding: 1.5rem;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}
.land-auth-panel h2 { margin: 0 0 0.4rem; font-size: 1.15rem; }
.land-auth-panel .hint { margin: 0 0 0.85rem; font-size: 0.82rem; color: #8a909a; }
.land-auth-panel label {
  display: block;
  font-size: 0.8rem;
  margin: 0.7rem 0 0.3rem;
  color: var(--land-muted);
}
.land-auth-panel input {
  width: 100%;
  box-sizing: border-box;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--land-border);
  border-radius: 8px;
  font-size: 0.92rem;
}
.land-auth-panel .err { color: #e1453d; }
.land-auth-actions {
  display: flex;
  gap: 0.45rem;
  margin-top: 1.1rem;
  flex-wrap: wrap;
}
.land-btn-ghost {
  background: #fff;
  border: 1px solid var(--land-border);
  color: var(--land-muted);
}

/* ── 响应式 ── */
@media (max-width: 960px) {
  .land-header-row {
    grid-template-columns: auto 1fr auto;
  }
  .land-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: #fff;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--land-border);
    gap: 0.65rem;
    justify-self: stretch;
    grid-column: 1 / -1;
  }
  .land-nav.is-open { display: flex; }
  .land-nav-toggle { display: flex; }

  .land-hero-grid {
    grid-template-columns: 1fr;
  }
  .land-hero-visual { order: -1; }
  .land-platform-grid,
  .land-feat-grid,
  .land-mode-intros {
    grid-template-columns: 1fr;
  }
  .land-flow-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  .land-flow-bar-item:not(:last-child)::after { display: none; }
  .land-trust-grid {
    justify-content: center;
  }
  .land-trust-item { white-space: normal; }
}

@media (max-width: 560px) {
  .land-flow-bar { grid-template-columns: 1fr 1fr; }
  .land-flow-marketing-row { flex-direction: column; }
  .land-flow-marketing-arrow { display: none; }
  .land-header-actions .land-btn-outline { display: none; }
}