:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --surface-alt: #f0f3f9;
  --accent: #0054ff;
  --accent-soft: rgba(0, 84, 255, 0.08);
  --accent-strong: #0034a3;
  --text-main: #111827;
  --text-muted: #6b7280;
  --border: rgba(15, 23, 42, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text-main);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: radial-gradient(circle at 15% 0, #ffffff 0, #a5b4fc 28%, #2563eb 65%, #020617 100%);
}

.logo-mark::after {
  content: "J";
  display: block;
  text-align: center;
  line-height: 28px;
  font-weight: 800;
  color: #e5ebff;
}

.logo-text {
  font-weight: 700;
  font-size: 16px;
}

.logo-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
}

.nav a {
  padding: 4px 8px;
  border-radius: 999px;
  color: var(--text-muted);
}

.nav a:hover {
  background-color: var(--accent-soft);
  color: var(--accent-strong);
}

.nav a.active {
  background-color: var(--accent);
  color: #ffffff;
}

.nav-cta {
  padding: 6px 10px;
  border-radius: 999px;
  background-color: #111827;
  color: #f9fafb;
  font-size: 12px;
}

.nav-cta:hover {
  background-color: #020617;
}

.layout {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 16px 32px;
  display: grid;
  grid-template-columns: 260px minmax(0, 1.5fr) minmax(0, 1.1fr);
  gap: 16px;
  flex: 1;
}

.hero-panel {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, #ffffff 0, #e5edff 40%, #eef2ff 100%);
  border-radius: 18px;
  padding: 16px 18px;
  border: 1px solid rgba(191, 219, 254, 0.6);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) 260px;
  gap: 16px;
  align-items: center;
}

.hero-text h1 {
  font-size: 24px;
  margin: 0 0 6px;
}

.hero-text p {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.tag {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  background-color: var(--accent-soft);
  color: var(--accent-strong);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 12px;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--accent);
  border-color: transparent;
  color: #ffffff;
}

.btn-outline {
  background-color: transparent;
  border-color: rgba(148, 163, 184, 0.7);
  color: #111827;
}

.hero-media {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background-color: #0b1120;
}

.hero-media img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.col-main {
  grid-column: 1 / 3;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.col-side {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.panel {
  background-color: var(--surface);
  border-radius: 14px;
  border: 1px solid var(--border);
  padding: 12px 14px 14px;
}

.panel h2 {
  font-size: 15px;
  margin: 0 0 6px;
}

.panel p {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

.list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.list li {
  padding: 5px 0;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.list li:first-child {
  border-top: none;
}

.pill {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 999px;
  background-color: #eff6ff;
  color: #1d4ed8;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.comparison-table th,
.comparison-table td {
  padding: 5px 4px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.3);
  text-align: left;
}

.comparison-table th {
  font-weight: 500;
  color: var(--text-muted);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 16px 20px;
  font-size: 11px;
  color: var(--text-muted);
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .col-main {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .topbar-inner {
    flex-wrap: wrap;
  }

  .nav {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .hero-panel {
    padding: 12px 12px 14px;
  }

  .layout {
    padding-inline: 12px;
  }
}