/* ==========================================================================
   x-pm 站点样式
   设计基调：克制、偏工具感。紫色作为品牌色，中文排版优先。
   ========================================================================== */

:root {
  /* 品牌色 */
  --brand: #6d4aff;
  --brand-soft: #f1eeff;
  --brand-border: #d9d0ff;

  /* 语义色 */
  --ok: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;

  /* 中性色 —— 亮色主题 */
  --bg: #ffffff;
  --bg-subtle: #fafafa;
  --bg-code: #f6f5fb;
  --border: #e6e4ee;
  --border-strong: #d3d0e0;
  --text: #1c1b22;
  --text-dim: #5c5a68;
  --text-faint: #8b8996;

  /* 尺寸 */
  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 1px 2px rgb(28 27 34 / 6%), 0 8px 24px rgb(28 27 34 / 6%);
  --maxw: 1080px;
  --maxw-wide: 1240px;

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', 'JetBrains Mono', Menlo,
    Consolas, 'Liberation Mono', monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #a78bfa;
    --brand-soft: #241f3d;
    --brand-border: #3b3163;

    --bg: #0f0e14;
    --bg-subtle: #16151e;
    --bg-code: #1a1923;
    --border: #272633;
    --border-strong: #383748;
    --text: #eceaf3;
    --text-dim: #a8a5b8;
    --text-faint: #706d80;

    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 8px 24px rgb(0 0 0 / 25%);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  /* 锚点跳转时避开吸顶导航 */
  scroll-padding-top: 84px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

/* ---------- 布局 ---------- */

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}
.wrap-wide {
  max-width: var(--maxw-wide);
}

/* ---------- 顶部导航 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 60px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
}
.logo:hover {
  text-decoration: none;
}
.logo-mark {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
}

.site-nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
  align-items: center;
}
.site-nav a {
  padding: 6px 12px;
  border-radius: 8px;
  color: var(--text-dim);
  font-size: 14.5px;
}
.site-nav a:hover {
  background: var(--bg-subtle);
  color: var(--text);
  text-decoration: none;
}
.site-nav a.active {
  color: var(--brand);
  background: var(--brand-soft);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  cursor: pointer;
}

@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }
  .site-nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }
  .site-nav.open {
    display: flex;
  }
}

/* ---------- Hero ---------- */

.hero {
  padding: 88px 0 64px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -220px;
  left: 50%;
  transform: translateX(-50%);
  width: 760px;
  height: 460px;
  background: radial-gradient(closest-side, var(--brand-soft), transparent);
  opacity: 0.85;
  pointer-events: none;
}
.hero > .wrap {
  position: relative;
  text-align: center;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(34px, 6vw, 54px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 800;
}
.hero h1 .accent {
  background: linear-gradient(96deg, var(--brand), #c084fc);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.sub {
  margin: 0 auto 14px;
  max-width: 640px;
  font-size: 18px;
  color: var(--text-dim);
}
.hero p.lead {
  margin: 0 auto 32px;
  max-width: 680px;
  color: var(--text-dim);
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--brand) 32%, transparent);
}
.btn-primary:hover {
  background: color-mix(in srgb, var(--brand) 88%, #000);
}
.btn-ghost {
  border-color: var(--border-strong);
  color: var(--text);
  background: var(--bg);
}
.btn-ghost:hover {
  background: var(--bg-subtle);
}

.hero-meta {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
  color: var(--text-faint);
  font-size: 13.5px;
}

/* ---------- 区块 ---------- */

section {
  padding: 64px 0;
}
section.tint {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.sec-head {
  margin-bottom: 40px;
  max-width: 680px;
}
.sec-head h2 {
  margin: 0 0 10px;
  font-size: clamp(24px, 3.4vw, 32px);
  letter-spacing: -0.015em;
  line-height: 1.3;
}
.sec-head p {
  margin: 0;
  color: var(--text-dim);
}

.eyebrow {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--brand);
}

/* ---------- 卡片 ---------- */

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover {
  border-color: var(--brand-border);
  transform: translateY(-2px);
}
.card h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 14.8px;
  line-height: 1.7;
}
.card code {
  font-size: 13.5px;
}

.card .ico {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 9px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 15px;
}

/* ---------- 代码块 ---------- */

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

:not(pre) > code {
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg-code);
  color: var(--text);
  white-space: nowrap;
}

.codeblock {
  position: relative;
  margin: 18px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-code);
  overflow: hidden;
}
.codeblock .bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px 8px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--text-faint);
  font-family: var(--font-mono);
}
.codeblock pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  font-size: 13.6px;
  line-height: 1.72;
}
.codeblock pre code {
  background: none;
  border: 0;
  padding: 0;
  white-space: pre;
}

.copy {
  padding: 3px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text-dim);
  font-family: var(--font-sans);
  font-size: 12px;
  cursor: pointer;
}
.copy:hover {
  color: var(--brand);
  border-color: var(--brand-border);
}
.copy.done {
  color: var(--ok);
  border-color: color-mix(in srgb, var(--ok) 40%, transparent);
}

/* 终端里的命令行着色 */
.t-prompt {
  color: var(--ok);
}
.t-cmd {
  color: var(--brand);
  font-weight: 600;
}
.t-flag {
  color: var(--warn);
}
.t-dim {
  color: var(--text-faint);
}

/* ---------- 表格 ---------- */

.table-scroll {
  overflow-x: auto;
  margin: 20px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}
th,
td {
  padding: 11px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
th {
  background: var(--bg-subtle);
  font-weight: 600;
  font-size: 13.5px;
  color: var(--text-dim);
}
tbody tr:last-child td {
  border-bottom: 0;
}
tbody tr:hover {
  background: var(--bg-subtle);
}
td code {
  white-space: nowrap;
}

/* ---------- 步骤 ---------- */

.steps {
  counter-reset: step;
  display: grid;
  gap: 14px;
}
.step {
  display: flex;
  gap: 16px;
  padding: 20px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg);
}
.step::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
}
.step h3 {
  margin: 2px 0 6px;
  font-size: 16px;
}
.step p {
  margin: 0 0 10px;
  color: var(--text-dim);
  font-size: 14.5px;
}

/* ---------- 检测规则链 ---------- */

.chain {
  display: grid;
  gap: 10px;
  margin: 20px 0;
}
.chain-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}
.chain-item .n {
  display: grid;
  place-items: center;
  flex: none;
  width: 24px;
  height: 24px;
  border-radius: 7px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 12.5px;
  font-weight: 700;
}
.chain-item .what {
  font-weight: 600;
  font-size: 14.5px;
  min-width: 240px;
}
.chain-item .why {
  color: var(--text-dim);
  font-size: 13.5px;
}

/* ---------- 提示条 ---------- */

.note {
  display: flex;
  gap: 12px;
  margin: 20px 0;
  padding: 15px 18px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--brand);
  border-radius: var(--radius);
  background: var(--bg-subtle);
  font-size: 14.5px;
  color: var(--text-dim);
}
.note strong {
  color: var(--text);
}
.note.warn {
  border-left-color: var(--warn);
}
.note.danger {
  border-left-color: var(--danger);
}
.note.ok {
  border-left-color: var(--ok);
}
.note .tag {
  flex: none;
  font-weight: 700;
  font-size: 12.5px;
  color: var(--text-faint);
  letter-spacing: 0.05em;
  padding-top: 2px;
}

/* ---------- 页脚 ---------- */

.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 14px;
}
.site-footer .wrap {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}
.site-footer .sep {
  margin: 0 4px;
}

/* ---------- 文档页：侧栏目录 ---------- */

.docs-layout {
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  padding: 40px 0 80px;
}

.toc {
  position: sticky;
  top: 84px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  font-size: 14px;
  border-left: 2px solid var(--border);
}
.toc-title {
  margin: 0 0 10px;
  padding-left: 16px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.toc a {
  display: block;
  padding: 5px 16px;
  color: var(--text-dim);
  border-left: 2px solid transparent;
  margin-left: -2px;
}
.toc a:hover {
  color: var(--text);
  background: var(--bg-subtle);
  text-decoration: none;
}
.toc a.active {
  color: var(--brand);
  border-left-color: var(--brand);
  font-weight: 600;
}
.toc a.sub {
  padding-left: 30px;
  font-size: 13.4px;
}

@media (max-width: 900px) {
  .docs-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .toc {
    display: none;
  }
  .toc.mobile-open {
    display: block;
    position: static;
    max-height: none;
    margin-bottom: 28px;
    border-left: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
  }
}

/* ---------- 文档正文排版 ---------- */

.doc h2 {
  margin: 52px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 25px;
  letter-spacing: -0.015em;
  scroll-margin-top: 84px;
}
.doc h2:first-child {
  margin-top: 0;
}
.doc h3 {
  margin: 32px 0 12px;
  font-size: 18.5px;
  scroll-margin-top: 84px;
}
.doc h4 {
  margin: 22px 0 10px;
  font-size: 15.5px;
  color: var(--text-dim);
}
.doc p {
  margin: 0 0 14px;
  color: var(--text-dim);
}
.doc ul,
.doc ol {
  margin: 0 0 16px;
  padding-left: 22px;
  color: var(--text-dim);
}
.doc li {
  margin-bottom: 6px;
}
.doc li::marker {
  color: var(--text-faint);
}
.doc strong {
  color: var(--text);
  font-weight: 650;
}

/* 命令条目 */
.cmd-item {
  margin: 14px 0 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.cmd-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  padding: 13px 18px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}
.cmd-head .sig {
  font-family: var(--font-mono);
  font-size: 14.5px;
  font-weight: 650;
  color: var(--brand);
}
.cmd-head .desc {
  color: var(--text-dim);
  font-size: 14px;
}
.cmd-body {
  padding: 6px 18px 16px;
}
.cmd-body p:first-child {
  margin-top: 12px;
}

.flag-list {
  display: grid;
  gap: 8px;
  margin: 12px 0 4px;
}
.flag {
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: 14.2px;
}
.flag .name {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13.4px;
  color: var(--warn);
  min-width: 128px;
}
.flag .what {
  color: var(--text-dim);
}

/* 徽章 */
.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 20px;
  border: 1px solid var(--border-strong);
  background: var(--bg-subtle);
  color: var(--text-dim);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  vertical-align: middle;
}
.badge.brand {
  border-color: var(--brand-border);
  background: var(--brand-soft);
  color: var(--brand);
}

/* FAQ */
.faq {
  margin: 12px 0 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.faq details {
  border-bottom: 1px solid var(--border);
}
.faq details:last-child {
  border-bottom: 0;
}
.faq summary {
  padding: 14px 18px;
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  list-style: none;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary::before {
  content: '▸';
  display: inline-block;
  width: 1.1em;
  color: var(--brand);
  transition: transform 0.15s ease;
}
.faq details[open] summary::before {
  transform: rotate(90deg);
}
.faq .answer {
  padding: 0 18px 16px 34px;
  color: var(--text-dim);
  font-size: 14.5px;
}
.faq .answer p:last-child {
  margin-bottom: 0;
}

@media (max-width: 480px) {
  .hero {
    padding: 56px 0 44px;
  }
  section {
    padding: 48px 0;
  }
  .flag {
    flex-direction: column;
    gap: 2px;
  }
}