/* ==========================================================================
   Radar 官网 — 现代企业风样式
   ========================================================================== */

:root {
  --color-bg: #0a0e1a;
  --color-bg-soft: #0f1424;
  --color-bg-card: #131a2e;
  --color-border: rgba(148, 163, 184, 0.14);
  --color-border-strong: rgba(148, 163, 184, 0.28);
  --color-text: #e6edf3;
  --color-text-soft: #94a3b8;
  --color-text-muted: #64748b;
  --color-primary: #5b8def;
  --color-primary-soft: #3b6dd6;
  --color-accent: #22d3ee;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-enterprise: #f59e0b;
  --color-community: #22d3ee;

  --gradient-hero: radial-gradient(ellipse at top, rgba(91, 141, 239, 0.18) 0%, transparent 55%),
                   radial-gradient(ellipse at bottom right, rgba(34, 211, 238, 0.10) 0%, transparent 60%);
  --gradient-text: linear-gradient(135deg, #5b8def 0%, #22d3ee 100%);
  --gradient-enterprise: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);

  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset,
                 0 24px 48px -16px rgba(0, 0, 0, 0.4);
  --radius: 12px;
  --radius-lg: 16px;
  --max-width: 1200px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
               "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--color-primary); text-decoration: none; transition: color .15s; }
a:hover { color: var(--color-accent); }

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

code, pre {
  font-family: "SF Mono", Menlo, Monaco, Consolas, "Courier New", monospace;
}

/* ==========================================================================
   Layout 通用
   ========================================================================== */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-sm { padding: 64px 0; }

.section-title {
  text-align: center;
  margin: 0 0 16px;
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-subtitle {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
  color: var(--color-text-soft);
  font-size: 17px;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ==========================================================================
   Header 导航
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 26, 0.78);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.nav-brand:hover { color: var(--color-text); }

.nav-logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--gradient-text);
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(91, 141, 239, 0.4);
}

.nav-brand-suffix {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(245, 158, 11, 0.14);
  color: var(--color-enterprise);
  margin-left: 4px;
  letter-spacing: 0.04em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  color: var(--color-text-soft);
  font-size: 14px;
  font-weight: 500;
  transition: color .15s;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--color-text);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ==========================================================================
   按钮
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(91, 141, 239, 0.35);
}
.btn-primary:hover {
  background: var(--color-primary-soft);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(91, 141, 239, 0.5);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn-ghost:hover {
  border-color: var(--color-text-soft);
  color: var(--color-text);
  background: rgba(148, 163, 184, 0.06);
}

.btn-enterprise {
  background: var(--gradient-enterprise);
  color: #fff;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
}
.btn-enterprise:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 15px;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  padding: 120px 0 96px;
  text-align: center;
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 75%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 100px;
  background: rgba(91, 141, 239, 0.10);
  border: 1px solid rgba(91, 141, 239, 0.25);
  font-size: 13px;
  color: var(--color-text-soft);
  margin-bottom: 24px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
}

.hero-title {
  font-size: 64px;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 24px;
}

.hero-subtitle {
  font-size: 20px;
  line-height: 1.6;
  color: var(--color-text-soft);
  margin: 0 auto 40px;
  max-width: 680px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 720px;
  margin: 0 auto;
}

.hero-stat-num {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}

.hero-stat-label {
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-text-soft);
}

/* ==========================================================================
   特性卡片
   ========================================================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 32px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all .2s;
}

.feature-card:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(91, 141, 239, 0.18), rgba(34, 211, 238, 0.12));
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  font-size: 22px;
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 12px;
}

.feature-desc {
  margin: 0;
  color: var(--color-text-soft);
  font-size: 14.5px;
  line-height: 1.7;
}

/* ==========================================================================
   版本对比
   ========================================================================== */

.compare-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.compare-card {
  position: relative;
  padding: 40px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.compare-card-enterprise {
  border-color: rgba(245, 158, 11, 0.4);
  background:
    linear-gradient(180deg, rgba(245, 158, 11, 0.06), transparent 40%),
    var(--color-bg-card);
}

.compare-card-enterprise::before {
  content: "推荐";
  position: absolute;
  top: -12px;
  right: 24px;
  padding: 4px 12px;
  background: var(--gradient-enterprise);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  border-radius: 100px;
  letter-spacing: 0.04em;
}

.compare-card-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-community);
}

.compare-card-enterprise .compare-card-label {
  color: var(--color-enterprise);
}

.compare-card-title {
  font-size: 28px;
  font-weight: 800;
  margin: 8px 0 12px;
  letter-spacing: -0.02em;
}

.compare-card-tagline {
  color: var(--color-text-soft);
  margin: 0 0 24px;
  font-size: 15px;
  min-height: 48px;
}

.compare-card-price {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 8px;
}

.compare-card-price small {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-soft);
}

.compare-card-target {
  padding: 14px 18px;
  background: rgba(148, 163, 184, 0.06);
  border-radius: 10px;
  color: var(--color-text-soft);
  font-size: 13.5px;
  margin: 20px 0 28px;
}

.compare-list {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
}

.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  font-size: 14.5px;
  color: var(--color-text);
}

.compare-list li::before {
  content: "✓";
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.14);
  color: var(--color-accent);
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  margin-top: 2px;
}

.compare-card-enterprise .compare-list li::before {
  background: rgba(245, 158, 11, 0.14);
  color: var(--color-enterprise);
}

/* ==========================================================================
   对比表
   ========================================================================== */

.compare-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-card);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 720px;
}

.compare-table thead th {
  padding: 20px 24px;
  text-align: left;
  font-weight: 700;
  font-size: 15px;
  border-bottom: 1px solid var(--color-border);
  background: rgba(148, 163, 184, 0.04);
}

.compare-table thead th:first-child {
  color: var(--color-text-soft);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.compare-table thead th:nth-child(2) { color: var(--color-community); }
.compare-table thead th:nth-child(3) { color: var(--color-enterprise); }

.compare-table tbody td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.compare-table tbody tr:last-child td { border-bottom: 0; }
.compare-table tbody tr:hover td { background: rgba(148, 163, 184, 0.03); }

.compare-table .row-group {
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: rgba(148, 163, 184, 0.04);
}

.compare-table .row-group td { padding: 12px 24px; }

.compare-table .cell-key { color: var(--color-text); font-weight: 500; }
.compare-table .cell-yes { color: var(--color-success); font-weight: 600; }
.compare-table .cell-no  { color: var(--color-text-muted); }
.compare-table .cell-partial { color: var(--color-warning); }

.cell-yes::before { content: "● "; }
.cell-no::before  { content: "— "; }
.cell-partial::before { content: "◐ "; }

/* ==========================================================================
   架构图
   ========================================================================== */

.arch-diagram {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 32px 0;
}

.arch-diagram pre {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-text-soft);
  overflow-x: auto;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-top: 32px;
}

.tech-chip {
  padding: 14px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: all .15s;
}

.tech-chip:hover {
  border-color: var(--color-border-strong);
}

.tech-chip-name {
  font-weight: 600;
  font-size: 14px;
}

.tech-chip-role {
  font-size: 12px;
  color: var(--color-text-muted);
}

.tech-group-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  margin: 40px 0 16px;
}

/* ==========================================================================
   快速开始
   ========================================================================== */

.quickstart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.code-block {
  background: #0d1117;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 16px 0;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(148, 163, 184, 0.04);
  border-bottom: 1px solid var(--color-border);
  font-size: 12px;
  color: var(--color-text-soft);
}

.code-block pre {
  margin: 0;
  padding: 16px 18px;
  font-size: 13.5px;
  line-height: 1.65;
  color: #e6edf3;
  overflow-x: auto;
}

.code-block .c-comment { color: #6e7681; }
.code-block .c-cmd { color: #79c0ff; }
.code-block .c-str { color: #a5d6ff; }

.copy-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-soft);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: all .15s;
}

.copy-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-soft);
}

.endpoint-list {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
}

.endpoint-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 8px;
  font-size: 14px;
}

.endpoint-list code {
  font-size: 13px;
  color: var(--color-accent);
}

.endpoint-list .endpoint-label { color: var(--color-text-soft); }

/* ==========================================================================
   CTA 区
   ========================================================================== */

.cta-section {
  text-align: center;
  padding: 80px 0;
  background:
    radial-gradient(ellipse at center, rgba(91, 141, 239, 0.12), transparent 60%);
}

.cta-title {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

.cta-subtitle {
  color: var(--color-text-soft);
  font-size: 17px;
  margin: 0 auto 32px;
  max-width: 560px;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 48px 0 32px;
  background: var(--color-bg-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand-desc {
  margin: 12px 0 0;
  color: var(--color-text-soft);
  font-size: 14px;
  max-width: 280px;
}

.footer-col-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
  margin: 0 0 16px;
}

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

.footer-links li { margin-bottom: 10px; }

.footer-links a {
  color: var(--color-text-soft);
  font-size: 14px;
}

.footer-links a:hover { color: var(--color-text); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-muted);
  font-size: 13px;
}

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 960px) {
  .hero-title { font-size: 44px; }
  .hero-subtitle { font-size: 17px; }
  .section { padding: 72px 0; }
  .section-title { font-size: 30px; }
  .features-grid { grid-template-columns: 1fr; }
  .compare-cards { grid-template-columns: 1fr; }
  .quickstart-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .nav-menu { display: none; }
  .hero-title { font-size: 34px; }
  .hero { padding: 80px 0 64px; }
  .section { padding: 56px 0; }
  .section-title { font-size: 26px; }
  .compare-card { padding: 28px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; }
}

/* ==========================================================================
   架构图（可视化版本，替换原 ASCII 图）
   ========================================================================== */

.arch-board {
  position: relative;
  padding: 40px 32px 56px;
  background:
    radial-gradient(ellipse at top, rgba(91, 141, 239, 0.10), transparent 60%),
    var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.arch-board::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  pointer-events: none;
}

.arch-layer {
  position: relative;
  z-index: 1;
}

.arch-layer-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: rgba(10, 14, 26, 0.6);
  margin-bottom: 16px;
}

.arch-row {
  display: grid;
  gap: 16px;
}

.arch-row-1 { grid-template-columns: 1fr; }
.arch-row-2 { grid-template-columns: repeat(2, 1fr); }
.arch-row-3 { grid-template-columns: repeat(3, 1fr); }

.arch-row-data {
  grid-template-columns: repeat(5, 1fr);
}

/* 通用节点 */
.arch-node {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  border-radius: 12px;
  background: rgba(19, 26, 46, 0.85);
  border: 1px solid var(--color-border-strong);
  transition: all .2s;
}

.arch-node:hover {
  transform: translateY(-2px);
  border-color: rgba(91, 141, 239, 0.5);
  box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.4);
}

.arch-node-icon {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 20px;
  background: linear-gradient(135deg, rgba(91, 141, 239, 0.18), rgba(34, 211, 238, 0.10));
}

.arch-node-body { flex: 1; min-width: 0; }

.arch-node-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
}

.arch-node-desc {
  font-size: 12.5px;
  color: var(--color-text-soft);
  margin-top: 2px;
}

.arch-node-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.arch-node-tags span {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(148, 163, 184, 0.10);
  color: var(--color-text-soft);
}

/* Gateway 节点高亮 */
.arch-node-gateway {
  background: linear-gradient(135deg, rgba(91, 141, 239, 0.14), rgba(34, 211, 238, 0.08));
  border-color: rgba(91, 141, 239, 0.4);
  justify-content: center;
  text-align: left;
}

/* 服务卡（应用服务层） */
.arch-service {
  padding: 20px;
  border-radius: 14px;
  background: rgba(19, 26, 46, 0.9);
  border: 1px solid var(--color-border-strong);
  border-top: 3px solid;
  transition: all .2s;
}

.arch-service:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px -12px rgba(0, 0, 0, 0.5);
}

.arch-service-admin   { border-top-color: var(--color-primary); }
.arch-service-engine  { border-top-color: var(--color-enterprise); }
.arch-service-monitor { border-top-color: var(--color-accent); }

.arch-service-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
}

.arch-service-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 20px;
}

.arch-service-admin   .arch-service-icon { background: rgba(91, 141, 239, 0.16); }
.arch-service-engine  .arch-service-icon { background: rgba(245, 158, 11, 0.16); }
.arch-service-monitor .arch-service-icon { background: rgba(34, 211, 238, 0.16); }

.arch-service-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}

.arch-service-port {
  font-size: 12px;
  font-family: "SF Mono", Menlo, Monaco, Consolas, monospace;
  color: var(--color-text-muted);
  margin-top: 2px;
}

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

.arch-service-list li {
  position: relative;
  padding: 4px 0 4px 16px;
  font-size: 13.5px;
  color: var(--color-text-soft);
}

.arch-service-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-muted);
}

.arch-service-admin   .arch-service-list li::before { background: var(--color-primary); }
.arch-service-engine  .arch-service-list li::before { background: var(--color-enterprise); }
.arch-service-monitor .arch-service-list li::before { background: var(--color-accent); }

/* 共享业务层（横条） */
.arch-shared {
  padding: 22px 24px;
  border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(91, 141, 239, 0.08), rgba(34, 211, 238, 0.05));
  border: 1px dashed rgba(91, 141, 239, 0.4);
}

.arch-shared-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-soft);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.arch-shared-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.arch-shared-item {
  padding: 12px 16px;
  background: rgba(10, 14, 26, 0.5);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.arch-shared-item strong {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  font-family: "SF Mono", Menlo, Monaco, Consolas, monospace;
}

.arch-shared-item span {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* 数据层（5 列圆形卡） */
.arch-data {
  text-align: center;
  padding: 18px 12px;
  background: rgba(19, 26, 46, 0.9);
  border: 1px solid var(--color-border-strong);
  border-radius: 12px;
  transition: all .2s;
}

.arch-data:hover {
  transform: translateY(-2px);
  border-color: rgba(34, 211, 238, 0.45);
}

.arch-data-optional {
  border-style: dashed;
  opacity: 0.85;
}

.arch-data-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.16), rgba(91, 141, 239, 0.08));
  display: grid;
  place-items: center;
  font-size: 22px;
}

.arch-data-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.arch-data-role {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.arch-data-role em {
  font-style: normal;
  color: var(--color-warning);
  font-size: 11px;
}

/* 层间连接器（垂直线） */
.arch-connector {
  position: relative;
  height: 32px;
  margin: 8px 0;
}

.arch-connector::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg,
    rgba(91, 141, 239, 0.45) 0%,
    rgba(91, 141, 239, 0.15) 100%);
  transform: translateX(-50%);
}

.arch-connector::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -1px;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 7px solid rgba(91, 141, 239, 0.45);
  transform: translateX(-50%);
}

.arch-connector-fork::before {
  background: linear-gradient(180deg,
    rgba(91, 141, 239, 0.45) 0%,
    rgba(91, 141, 239, 0.45) 50%,
    transparent 50%);
}

.arch-connector-fork::after { display: none; }

.arch-connector-fork .arch-connector-branches,
.arch-connector-fork::before {
  /* fork 视觉：底部一条横线 + 3 个向下箭头 */
}

/* 缓存同步浮层提示 */
.arch-callout {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 32px;
  padding: 18px 22px;
  background:
    linear-gradient(135deg, rgba(245, 158, 11, 0.10), rgba(245, 158, 11, 0.02));
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 12px;
}

.arch-callout-icon {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(245, 158, 11, 0.18);
  display: grid;
  place-items: center;
  font-size: 22px;
}

.arch-callout-body { flex: 1; }

.arch-callout-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-enterprise);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.arch-callout-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-soft);
}

.arch-callout-step {
  padding: 4px 10px;
  background: rgba(10, 14, 26, 0.5);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  font-weight: 500;
}

.arch-callout-arrow {
  color: var(--color-enterprise);
  font-weight: 700;
}

/* 架构图响应式 */
@media (max-width: 960px) {
  .arch-row-3 { grid-template-columns: 1fr; }
  .arch-row-data { grid-template-columns: repeat(2, 1fr); }
  .arch-shared-grid { grid-template-columns: repeat(2, 1fr); }
  .arch-board { padding: 28px 20px 40px; }
}

@media (max-width: 640px) {
  .arch-row-2 { grid-template-columns: 1fr; }
  .arch-row-data { grid-template-columns: 1fr 1fr; }
  .arch-shared-grid { grid-template-columns: 1fr; }
  .arch-callout { flex-direction: column; align-items: flex-start; }
  .arch-callout-flow { font-size: 12px; }
}

/* ==========================================================================
   联系方式弹窗（二维码 Modal）
   ========================================================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(5, 8, 18, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 24px;
  animation: modal-fade-in .2s ease-out;
}

.modal-overlay.active { display: flex; }

.modal-card {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-strong);
  border-radius: 18px;
  padding: 36px 32px 28px;
  max-width: 420px;
  width: 100%;
  text-align: center;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.05) inset,
    0 32px 80px -16px rgba(0, 0, 0, 0.6);
  animation: modal-pop-in .25s cubic-bezier(.16, 1, .3, 1);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: rgba(148, 163, 184, 0.06);
  color: var(--color-text-soft);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all .15s;
}

.modal-close:hover {
  color: var(--color-text);
  background: rgba(148, 163, 184, 0.12);
  border-color: var(--color-text-soft);
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.modal-subtitle {
  color: var(--color-text-soft);
  font-size: 14px;
  margin: 0 0 24px;
}

.modal-qr {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
  margin: 0 auto;
  border-radius: 12px;
  background: #fff;
  padding: 8px;
}

.modal-tip {
  margin: 18px 0 0;
  font-size: 13px;
  color: var(--color-text-muted);
}

@keyframes modal-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes modal-pop-in {
  from { opacity: 0; transform: scale(0.92) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

@media (max-width: 480px) {
  .modal-card { padding: 28px 20px 22px; }
  .modal-title { font-size: 18px; }
}