/* Path: Network/WEB Service/Content/b09/assets | Timestamp: 2026-03-15 05:16:01 | Version: b01 */
:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #eef4ff;
  --surface-strong: #0f172a;
  --text: #1e293b;
  --muted: #475569;
  --border: #dbe4f0;
  --primary: #2563eb;
  --primary-soft: #dbeafe;
  --accent: #14b8a6;
  --warning: #f59e0b;
  --success: #16a34a;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --code-bg: #0b1220;
  --code-text: #e5edf8;
  --mono: "SFMono-Regular", "Cascadia Code", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.08), transparent 28%),
    radial-gradient(circle at bottom right, rgba(20, 184, 166, 0.08), transparent 22%),
    var(--bg);
  line-height: 1.75;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
}

code,
pre {
  font-family: var(--mono);
}

pre {
  margin: 0;
  padding: 1.25rem;
  overflow-x: auto;
  border-radius: var(--radius-md);
  background: var(--code-bg);
  color: var(--code-text);
  font-size: 0.95rem;
}

pre code {
  white-space: pre;
}

iframe {
  width: 100%;
  min-height: 260px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
}

.site-shell {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  min-height: 100vh;
  padding: 1.5rem;
  border-right: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
}

.sidebar-brand {
  margin-bottom: 1.25rem;
  padding: 1rem 1rem 1.1rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #dbeafe, #ccfbf1);
  box-shadow: var(--shadow);
}

.sidebar-brand small {
  display: block;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.sidebar-brand h2 {
  margin: 0.35rem 0 0;
  font-size: 1.15rem;
  line-height: 1.4;
}

.sidebar-intro {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.sidebar-nav {
  display: grid;
  gap: 0.55rem;
  margin-top: 1.1rem;
}

.sidebar-link {
  display: block;
  padding: 0.85rem 1rem;
  border: 1px solid transparent;
  border-radius: 14px;
  color: var(--text);
  background: transparent;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.sidebar-link:hover {
  text-decoration: none;
  transform: translateX(4px);
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.75);
}

.sidebar-link.active {
  background: var(--primary-soft);
  border-color: rgba(37, 99, 235, 0.2);
  color: #1d4ed8;
  font-weight: 700;
}

.sidebar-link small {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
}

.sidebar-tips {
  margin-top: 1.2rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.sidebar-tips h3 {
  margin: 0 0 0.6rem;
  font-size: 1rem;
}

.sidebar-tips ul {
  padding-left: 1.1rem;
  margin: 0;
  color: var(--muted);
}

.content {
  padding: 2rem clamp(1rem, 2vw, 2.5rem) 4rem;
}

.hero,
.content-section,
.page-footer,
.chapter-card,
.definition-card,
.stat-card,
.roadmap-card,
.mini-card,
.comparison-card,
.callout,
.practice-card,
.summary-card,
.example-showcase,
.framework-card {
  background: var(--surface);
  border: 1px solid rgba(219, 228, 240, 0.95);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero {
  padding: 2rem;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(20, 184, 166, 0.12)),
    var(--surface);
}

.eyebrow,
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: #1d4ed8;
  font-weight: 700;
  font-size: 0.88rem;
}

.hero h1 {
  margin: 1rem 0 0.8rem;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.35rem;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.8rem 1.1rem;
  border-radius: 12px;
  font-weight: 700;
  border: 1px solid transparent;
}

.button-link.primary {
  background: var(--primary);
  color: #fff;
}

.button-link.secondary {
  border-color: rgba(37, 99, 235, 0.2);
  background: rgba(255, 255, 255, 0.8);
}

.button-link:hover {
  text-decoration: none;
}

.content-section {
  margin-top: 1.5rem;
  padding: 1.6rem;
}

.content-section h2 {
  margin-top: 0;
  font-size: 1.55rem;
}

.content-section h3 {
  margin-top: 1.35rem;
  margin-bottom: 0.55rem;
}

.section-intro,
.lead {
  color: var(--muted);
}

.grid-2,
.grid-3,
.chapter-grid,
.definition-grid,
.stat-grid,
.framework-grid,
.card-grid {
  display: grid;
  gap: 1rem;
}

.grid-2,
.chapter-grid,
.framework-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3,
.definition-grid,
.stat-grid,
.card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.chapter-card,
.definition-card,
.stat-card,
.framework-card,
.mini-card,
.comparison-card,
.practice-card,
.summary-card {
  padding: 1.15rem;
}

.chapter-card h3,
.definition-card h3,
.framework-card h3,
.practice-card h3,
.summary-card h3,
.stat-card h3 {
  margin-top: 0;
  margin-bottom: 0.45rem;
}

.chapter-card p,
.definition-card p,
.framework-card p,
.stat-card p,
.mini-card p,
.comparison-card p {
  margin: 0;
  color: var(--muted);
}

.chapter-card .button-link {
  margin-top: 1rem;
}

.card-list,
.plain-list,
.practice-list,
.summary-list {
  margin: 0.4rem 0 0;
  padding-left: 1.1rem;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  border: 1px solid var(--border);
  padding: 0.8rem 0.9rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: #eff6ff;
  font-weight: 700;
}

.note,
.callout {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  color: var(--muted);
}

.note {
  border-left: 5px solid var(--accent);
  background: #f0fdfa;
  border-radius: 0 14px 14px 0;
}

.callout strong {
  color: var(--text);
}

.mermaid {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: 18px;
  background: linear-gradient(180deg, #f8fbff, #f4f9ff);
  overflow-x: auto;
}

.example-showcase {
  margin-top: 1rem;
  overflow: hidden;
}

.example-head {
  padding: 1.2rem 1.2rem 0;
}

.example-head h3 {
  margin: 0;
}

.example-head p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.example-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1rem 1.2rem 0.8rem;
}

.example-tab {
  appearance: none;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--muted);
  font: inherit;
  font-weight: 700;
  padding: 0.65rem 1rem;
  border-radius: 999px;
  cursor: pointer;
}

.example-tab.is-active {
  background: var(--surface-strong);
  color: #fff;
  border-color: var(--surface-strong);
}

.example-panel {
  display: none;
  padding: 0 1.2rem 1.25rem;
}

.example-panel.is-active {
  display: block;
}

.preview-window,
.terminal-window,
.response-window,
.browser-window {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
}

.browser-chrome {
  display: flex;
  gap: 0.45rem;
  margin-bottom: 0.9rem;
}

.browser-chrome span {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: #cbd5e1;
}

.terminal-window {
  background: #0f172a;
  color: #e2e8f0;
  font-family: var(--mono);
  white-space: pre-wrap;
}

.response-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.7rem;
}

.tag {
  display: inline-flex;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: var(--primary-soft);
  color: #1d4ed8;
  font-size: 0.85rem;
  font-weight: 700;
}

.path-card {
  display: grid;
  gap: 0.8rem;
  padding: 1rem;
  border-radius: 16px;
  background: linear-gradient(180deg, #f8fbff, #fff);
  border: 1px solid var(--border);
}

.path-card strong {
  display: block;
}

.page-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
}

.page-nav a {
  flex: 1;
  display: block;
  padding: 1rem 1.1rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.88);
  color: var(--text);
}

.page-nav a span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
}

.page-footer {
  margin-top: 1.5rem;
  padding: 1.15rem 1.25rem;
  color: var(--muted);
}

.inline-kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 8px;
  background: #fff;
  font-family: var(--mono);
  font-size: 0.9rem;
}

.comparison {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.comparison-card h4 {
  margin: 0 0 0.45rem;
}

.muted {
  color: var(--muted);
}

@media (max-width: 1180px) {
  .site-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    min-height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
}

@media (max-width: 860px) {
  .grid-2,
  .grid-3,
  .chapter-grid,
  .definition-grid,
  .stat-grid,
  .framework-grid,
  .card-grid,
  .response-grid,
  .comparison {
    grid-template-columns: 1fr;
  }

  .hero,
  .content-section {
    padding: 1.2rem;
  }

  .page-nav {
    flex-direction: column;
  }
}