/* pupu 官网 / 文档站共用样式 */

:root {
  --bg: #f7f6fb;
  --bg-soft: #ffffff;
  --bg-mute: #efedf7;
  --fg: #1b1726;
  --fg-mute: #5d5670;
  --fg-faint: #8d86a3;
  --brand: #7c5cff;
  --brand-soft: rgba(124, 92, 255, 0.12);
  --brand-strong: #5b3ce0;
  --border: rgba(27, 23, 38, 0.1);
  --shadow: 0 1px 2px rgba(20, 15, 40, 0.06), 0 8px 24px rgba(20, 15, 40, 0.06);
  --radius: 14px;
  --max: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0c18;
    --bg-soft: #17131f;
    --bg-mute: #1e1a29;
    --fg: #ece9f5;
    --fg-mute: #a9a1bd;
    --fg-faint: #7d7591;
    --brand: #a289ff;
    --brand-soft: rgba(162, 137, 255, 0.16);
    --brand-strong: #c3b2ff;
    --border: rgba(236, 233, 245, 0.12);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Source Han Sans SC", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

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

/* 顶栏 */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 62px;
}

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

.nav-brand:hover {
  text-decoration: none;
}

.nav-brand img {
  width: 30px;
  height: 30px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-left: auto;
  font-size: 14px;
}

.nav-links a {
  color: var(--fg-mute);
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--fg);
  text-decoration: none;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 6px 18px var(--brand-soft);
}

.btn-primary:hover {
  background: var(--brand-strong);
  color: #fff;
}

.btn-ghost {
  background: var(--bg-soft);
  color: var(--fg);
  border-color: var(--border);
}

.btn-ghost:hover {
  color: var(--fg);
}

/* Hero */
.hero {
  padding: 72px 0 56px;
  text-align: center;
  background: radial-gradient(900px 380px at 50% -80px, var(--brand-soft), transparent 72%);
}

.hero-logo {
  width: 112px;
  height: 112px;
  border-radius: 26px;
  box-shadow: var(--shadow);
}

.hero h1 {
  font-size: clamp(34px, 6vw, 52px);
  margin: 22px 0 8px;
  letter-spacing: -0.02em;
}

.hero .tagline {
  font-size: clamp(16px, 2.4vw, 19px);
  color: var(--fg-mute);
  margin: 0 auto;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 30px;
}

.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 26px;
}

.pill {
  font-size: 13px;
  color: var(--fg-mute);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 13px;
}

.pill strong {
  color: var(--fg);
  font-weight: 600;
}

/* 区块 */
section {
  padding: 52px 0;
}

section + section {
  border-top: 1px solid var(--border);
}

h2 {
  font-size: 24px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 17px;
  margin: 0 0 6px;
}

.section-lead {
  color: var(--fg-mute);
  margin: 0 0 26px;
  max-width: 720px;
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(268px, 1fr));
}

.card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.card .emoji {
  font-size: 22px;
  line-height: 1;
  display: block;
  margin-bottom: 10px;
}

.card p {
  margin: 0;
  color: var(--fg-mute);
  font-size: 14.5px;
}

.card p + p {
  margin-top: 8px;
}

/* 平台 */
.platforms {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.platform-group {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.platform-group h3 {
  display: flex;
  align-items: center;
  gap: 8px;
}

.platform-group .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 12px;
}

.tag {
  font-size: 13px;
  background: var(--bg-mute);
  color: var(--fg-mute);
  border-radius: 7px;
  padding: 4px 10px;
}

.tag.lead {
  background: var(--brand-soft);
  color: var(--brand-strong);
  font-weight: 600;
}

/* 步骤 */
.steps {
  counter-reset: step;
  display: grid;
  gap: 16px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.steps li {
  position: relative;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px 18px 62px;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 18px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand-strong);
  font-size: 14px;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.steps p {
  margin: 4px 0 0;
  color: var(--fg-mute);
  font-size: 14.5px;
}

/* 代码 */
pre {
  background: var(--bg-mute);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13.5px;
  margin: 10px 0;
}

:not(pre) > code {
  background: var(--bg-mute);
  border-radius: 5px;
  padding: 2px 6px;
  font-size: 0.9em;
}

/* 表格 */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  margin: 8px 0;
}

th,
td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  color: var(--fg);
  font-weight: 600;
}

td {
  color: var(--fg-mute);
}

/* 提示条 */
.note {
  border-left: 3px solid var(--brand);
  background: var(--brand-soft);
  border-radius: 0 10px 10px 0;
  padding: 12px 16px;
  color: var(--fg-mute);
  font-size: 14.5px;
  margin: 16px 0;
}

.note strong {
  color: var(--fg);
}

/* 页脚 */
footer {
  border-top: 1px solid var(--border);
  padding: 30px 0 44px;
  color: var(--fg-faint);
  font-size: 14px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a {
  color: var(--fg-mute);
}

/* 文档页 */
.doc {
  padding: 44px 0 60px;
}

.doc-layout {
  display: grid;
  grid-template-columns: 208px 1fr;
  gap: 40px;
  align-items: start;
}

.doc-toc {
  position: sticky;
  top: 86px;
  font-size: 14px;
  border-left: 2px solid var(--border);
  padding-left: 14px;
}

.doc-toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.doc-toc a {
  color: var(--fg-mute);
}

.doc-toc a:hover {
  color: var(--fg);
  text-decoration: none;
}

.doc-body h2 {
  margin-top: 40px;
  padding-top: 4px;
}

.doc-body h2:first-child {
  margin-top: 0;
}

.doc-body h3 {
  margin-top: 26px;
}

.doc-body ul {
  color: var(--fg-mute);
  padding-left: 20px;
}

.doc-body li + li {
  margin-top: 6px;
}

@media (max-width: 780px) {
  .doc-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .doc-toc {
    position: static;
  }

  .nav-links {
    gap: 14px;
    font-size: 13px;
  }

  .hero {
    padding: 48px 0 40px;
  }
}