/* OpenClaw 安装指南 — 样式 */
:root {
  --bg: #0d1117;
  --bg-elevated: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #f0883e;
  --accent-hover: #e57a2d;
  --accent-soft: rgba(240, 136, 62, 0.15);
  --code-bg: #21262d;
  --success: #3fb950;
  --font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --radius: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.header {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
}

.logo:hover {
  color: var(--accent);
}

.logo-icon {
  font-size: 1.5rem;
}

.header nav {
  display: flex;
  gap: 1.25rem;
}

.header nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.header nav a:hover {
  color: var(--accent);
}

/* Hero */
.hero {
  padding: 2.5rem 0;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: 1.85rem;
  font-weight: 700;
}

.hero-desc {
  margin: 0 0 0.5rem;
  color: var(--text);
  font-size: 1.05rem;
}

.hero-note {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Platform section */
.platform {
  padding: 0 0 3rem;
}

.platform h2 {
  margin: 0 0 1.25rem;
  font-size: 1.25rem;
  font-weight: 600;
}

.tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
  padding: 0.25rem;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  width: fit-content;
  border: 1px solid var(--border);
}

.tab {
  padding: 0.5rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
}

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

.tab.active {
  color: var(--bg);
  background: var(--accent);
}

.panels {
  position: relative;
}

.panel {
  display: none;
}

.panel.active {
  display: block;
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.platform-note {
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.95rem;
}

.step {
  margin-bottom: 1.75rem;
}

.step h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.step p {
  margin: 0 0 0.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.step p:last-of-type {
  margin-bottom: 0;
}

.step.highlight .code-block {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.code-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 0.5rem 0 0;
}

.code-block code {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text);
  overflow-x: auto;
  white-space: nowrap;
}

.copy-btn {
  flex-shrink: 0;
  padding: 0.4rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.copy-btn:hover {
  color: var(--bg);
  background: var(--accent);
}

.copy-btn.copied {
  color: var(--success);
  border-color: var(--success);
}

.hint {
  margin-top: 0.5rem !important;
  font-size: 0.85rem !important;
}

.hint code {
  font-size: 0.8rem;
  padding: 0.15rem 0.35rem;
  background: var(--code-bg);
  border-radius: 4px;
}

.step code:not(.code-block code) {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.15rem 0.35rem;
  background: var(--code-bg);
  border-radius: 4px;
}

.extra {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.extra a {
  color: var(--accent);
  text-decoration: none;
}

.extra a:hover {
  text-decoration: underline;
}

/* Links section */
.links {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--border);
}

.links h2 {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  font-weight: 600;
}

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

.links li {
  margin-bottom: 0.5rem;
}

.links a {
  color: var(--accent);
  text-decoration: none;
}

.links a:hover {
  text-decoration: underline;
}

/* Footer */
.footer {
  margin-top: auto;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}

.footer p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer a {
  color: var(--accent);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 1.5rem;
  }

  .tabs {
    width: 100%;
  }

  .tab {
    flex: 1;
  }

  .code-block {
    flex-wrap: wrap;
  }

  .code-block code {
    white-space: pre-wrap;
    word-break: break-all;
  }
}