:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #111827;
  --muted: #4b5563;
  --line: #e5e7eb;
  --brand: #0f766e;
  --brand-2: #0ea5e9;
  --accent: #f59e0b;
  --soft: #ecfeff;
  --danger: #dc2626;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "Noto Sans SC", "PingFang SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    linear-gradient(180deg, #eef7ff 0%, #f4f7fb 28%, #f8fafc 100%);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; }
.container { width: min(100% - 2rem, 1100px); margin-inline: auto; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  min-height: 64px;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.brand { display: flex; align-items: center; gap: .7rem; font-weight: 800; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px;
  display: grid; place-items: center; color: #fff; font-size: .85rem;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}
.nav-links { display: flex; align-items: center; gap: 1.1rem; color: var(--muted); font-size: .95rem; }
.nav-links a:hover { color: var(--brand); }
.nav-cta, .btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .7rem 1.1rem; border-radius: 999px; border: 1px solid transparent;
  font-weight: 700; cursor: pointer;
}
.nav-cta, .btn-primary {
  background: linear-gradient(135deg, var(--brand), #0d9488);
  color: #fff !important;
}
.btn-ghost {
  background: #fff;
  border-color: var(--line);
  color: var(--text) !important;
}
.nav-toggle {
  display: none; width: 40px; height: 40px; border-radius: 10px;
  border: 1px solid var(--line); background: #fff;
}

.hero {
  padding: 2.8rem 0 1.5rem;
}
.hero-box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 2rem;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 1.5rem;
}
.eyebrow {
  display: inline-block;
  padding: .25rem .65rem;
  border-radius: 999px;
  background: var(--soft);
  color: var(--brand);
  font-size: .8rem;
  font-weight: 700;
}
.hero h1 {
  margin: .8rem 0 .6rem;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  line-height: 1.25;
}
.hero p { margin: 0; color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.2rem; }
.hero-side {
  background: linear-gradient(160deg, #0f766e, #0ea5e9);
  color: #fff;
  border-radius: 18px;
  padding: 1.3rem;
}
.hero-side h3 { margin: 0 0 .8rem; color: #fff; }
.hero-side ul { margin: 0; padding-left: 1.1rem; }
.hero-side li { margin: .35rem 0; color: #fff; }

.section { padding: 2.2rem 0; }
.section-head { margin-bottom: 1.1rem; }
.section-head h2 { margin: .35rem 0; font-size: 1.6rem; }
.section-head p { margin: 0; color: var(--muted); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.product-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: .7rem;
}
.product-card.hot { border-color: #99f6e4; background: linear-gradient(180deg, #f0fdfa, #fff); }
.tag {
  align-self: flex-start;
  background: #fff7ed;
  color: #c2410c;
  font-size: .75rem;
  font-weight: 700;
  padding: .2rem .5rem;
  border-radius: 999px;
}
.product-card h3 { margin: 0; font-size: 1.2rem; }
.price {
  font-size: 2rem;
  font-weight: 900;
  color: #0f766e;
  letter-spacing: -.03em;
}
.price small { font-size: .95rem; color: var(--muted); font-weight: 600; }
.product-card ul {
  margin: 0; padding: 0; list-style: none;
  color: var(--muted); flex: 1;
}
.product-card li { padding: .28rem 0 .28rem 1.15rem; position: relative; }
.product-card li::before {
  content: "✓"; position: absolute; left: 0; color: var(--brand); font-weight: 800;
}

.table-wrap {
  overflow: auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
table.compare {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}
.compare th, .compare td {
  padding: .85rem 1rem;
  border-bottom: 1px solid var(--line);
  text-align: center;
  font-size: .92rem;
}
.compare th {
  background: #0f172a;
  color: #fff;
  font-weight: 700;
}
.compare td:first-child, .compare th:first-child { text-align: left; }
.compare tr:nth-child(even) td { background: #f8fafc; }
.compare .yes { color: #059669; font-weight: 800; }
.compare .no { color: #9ca3af; }

.panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}
.split {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 1rem;
}

/* 经营服务页：购买面板（对标会员购买弹层） */
.buy-board {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 1.2rem;
}
.tabs {
  display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1rem;
}
.tab {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: .55rem 1rem;
  cursor: pointer;
  font-weight: 700;
  color: var(--muted);
}
.tab.active {
  background: #0f766e;
  border-color: #0f766e;
  color: #fff;
}
.plan-list { display: grid; gap: .7rem; }
.plan {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: .9rem 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.plan.active {
  border-color: #0f766e;
  background: #f0fdfa;
  box-shadow: inset 0 0 0 1px #0f766e;
}
.plan .name { font-weight: 800; }
.plan .desc { color: var(--muted); font-size: .88rem; }
.plan .amt { color: #0f766e; font-size: 1.35rem; font-weight: 900; }
.privilege h3 { margin: 0 0 .7rem; }
.privilege table { width: 100%; border-collapse: collapse; }
.privilege td {
  padding: .55rem 0;
  border-bottom: 1px solid var(--line);
  font-size: .92rem;
}
.privilege td:last-child { text-align: right; color: var(--brand); font-weight: 700; }
.buy-actions { margin-top: 1rem; display: grid; gap: .7rem; }
.agree {
  display: flex; gap: .5rem; align-items: flex-start;
  color: var(--muted); font-size: .85rem;
}
.live-price {
  font-size: 1.8rem; font-weight: 900; color: #0f766e;
}

/* 本页可体验演示 */
.demo-board {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
  min-height: 420px;
}
.demo-nav {
  background: #0f172a;
  color: #fff;
  padding: 1rem;
}
.demo-nav h4 { margin: 0 0 .8rem; color: #fff; }
.demo-nav button {
  width: 100%;
  text-align: left;
  margin: .35rem 0;
  padding: .65rem .75rem;
  border-radius: 10px;
  border: 0;
  background: rgba(255,255,255,.08);
  color: #fff;
  cursor: pointer;
}
.demo-nav button.active { background: #0f766e; }
.demo-stage { padding: 1rem; background: #f8fafc; }
.demo-frame {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  min-height: 360px;
}
.demo-topbar {
  height: 36px; background: #f3f4f6; border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: .35rem; padding: 0 .75rem;
}
.demo-topbar i { width: 8px; height: 8px; border-radius: 50%; background: #f87171; display: inline-block; }
.demo-topbar i:nth-child(2) { background: #fbbf24; }
.demo-topbar i:nth-child(3) { background: #34d399; }
.demo-body { padding: 1rem; }
.demo-body h3 { margin: 0 0 .5rem; }
.demo-body p { margin: 0 0 .8rem; color: var(--muted); }
.wire { height: 12px; border-radius: 999px; background: #e5e7eb; margin: .45rem 0; }
.wire.w40 { width: 40%; } .wire.w60 { width: 60%; } .wire.w80 { width: 80%; }
.demo-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; margin-top: .8rem; }
.demo-card {
  border: 1px solid var(--line); border-radius: 10px; padding: .7rem; background: #f8fafc;
}
.demo-card strong { display: block; margin-bottom: .25rem; }

.form-grid { display: grid; gap: .75rem; }
.form-grid label { display: grid; gap: .3rem; font-size: .9rem; color: var(--muted); }
.form-grid input, .form-grid select, .form-grid textarea {
  width: 100%; padding: .75rem .9rem; border-radius: 10px;
  border: 1px solid var(--line); background: #fff; color: var(--text);
}
.form-success {
  display: none; margin-top: .6rem; padding: .75rem .9rem;
  border-radius: 10px; background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0;
}
.form-success.show { display: block; }

.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 1.6rem 0 2rem;
  color: var(--muted);
  font-size: .9rem;
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 1rem;
}
.site-footer h4 { margin: 0 0 .5rem; color: var(--text); }
.footer-bottom {
  margin-top: 1rem; padding-top: .9rem; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: .7rem 1.2rem; justify-content: space-between;
}

.notice {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #9a3412;
  border-radius: 12px;
  padding: .9rem 1rem;
  margin: 1rem 0 0;
  font-size: .92rem;
}

@media (max-width: 960px) {
  .hero-box, .product-grid, .split, .buy-board, .demo-board, .footer-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none; position: absolute; left: 1rem; right: 1rem; top: 64px;
    background: #fff; border: 1px solid var(--line); border-radius: 12px;
    flex-direction: column; align-items: stretch; padding: .8rem;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: inline-grid; place-items: center; }
}