:root {
  --bg: #faf8f5;
  --panel: #fff;
  --bg-muted: #f3f0eb;
  --text: #1c1917;
  --muted: #57534e;
  --faint: #78716c;
  --line: rgba(28, 25, 23, 0.1);
  --accent: #0d8077;
  --accent-soft: rgba(13, 148, 136, 0.1);
  --warm: #a85a05;
  --font: "Plus Jakarta Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --serif: "Noto Serif SC", "Source Serif 4", "Songti SC", Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --max: 1120px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body { margin: 0; font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; letter-spacing: 0.01em; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; height: auto; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
::selection { background: #cce7e2; color: var(--text); }
.container { width: min(var(--max), calc(100% - 48px)); margin-inline: auto; }
section { padding: 88px 0; scroll-margin-top: 88px; }
main { scroll-margin-top: 80px; }
.skip-link { position: fixed; top: 8px; left: 16px; padding: 10px 16px; background: var(--text); color: white; border-radius: 8px; z-index: 100; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.site-nav { position: sticky; top: 0; z-index: 50; background: rgba(250, 248, 245, 0.9); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.site-nav .container { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; font-size: 15px; font-weight: 600; letter-spacing: -0.025em; white-space: nowrap; }
.brand img { flex: none; border-radius: 8px; }
.brand-short { display: none; }
.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links a { padding: 10px; font-size: 13px; color: var(--muted); white-space: nowrap; border-radius: 10px; }
.nav-links a:hover { background: var(--bg-muted); color: var(--text); }
.nav-cta { display: flex; align-items: center; gap: 8px; flex: none; }
.lang-switch { display: inline-flex; align-items: center; padding: 3px; border: 1px solid var(--line); border-radius: 999px; background: var(--panel); }
.lang-switch button { appearance: none; border: 0; background: transparent; color: var(--muted); font-size: 12px; font-weight: 600; padding: 7px 10px; border-radius: 999px; cursor: pointer; line-height: 1.2; }
.lang-switch button[aria-pressed="true"] { background: var(--text); color: #fff; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; gap: 8px; padding: 10px 18px; font-size: 14px; font-weight: 500; border: 1px solid transparent; border-radius: 999px; transition: transform 0.15s, background 0.15s; text-align: center; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--text); color: #fff; box-shadow: 0 10px 24px -12px rgba(0,0,0,0.45); }
.btn-primary:hover { background: #292524; }
.btn-secondary { background: var(--panel); border-color: var(--line); }
.btn-secondary:hover { background: var(--bg-muted); }
.hero { padding: 72px 0 48px; text-align: center; }
.hero-identity { display: flex; flex-direction: column; align-items: center; margin-bottom: 28px; }
.hero-identity img { width: 76px; height: 76px; }
.hero-identity p { margin: 18px 0 0; font-size: 21px; font-weight: 500; letter-spacing: -0.03em; }
.eyebrow { display: inline-flex; padding: 6px 14px; margin-bottom: 24px; font-size: 13px; font-weight: 500; color: var(--accent); background: var(--accent-soft); border-radius: 999px; }
.hero h1 { margin: 0 0 20px; font-family: var(--serif); font-size: clamp(2.4rem, 5vw, 3.75rem); font-weight: 600; line-height: 1.3; letter-spacing: 0.02em; text-wrap: balance; }
.hero .lead { max-width: 660px; margin: 0 auto 32px; font-size: clamp(1.05rem, 2vw, 1.2rem); color: var(--muted); line-height: 1.85; }
.hero-actions { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-bottom: 56px; }
.hero-visual { max-width: 960px; margin: 0 auto; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; background: var(--panel); box-shadow: 0 24px 60px -28px rgba(15,23,42,0.28); }
.hero-visual img { width: 100%; }
.visual-caption { margin: 20px auto 0; color: var(--faint); font-size: 13px; max-width: 680px; }
.integrations { padding: 30px 0 42px; border-bottom: 1px solid var(--line); text-align: center; }
.integrations h2 { margin: 0 0 22px; font-size: 13px; font-weight: 400; color: var(--faint); }
.host-list { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 20px 46px; list-style: none; margin: 0; padding: 0; }
.host-list li { font-size: 19px; font-weight: 600; color: var(--muted); letter-spacing: -0.035em; }
.host-list .host-protocol { font: 13px var(--mono); border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; }
.section-label { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; font-size: 13px; color: var(--faint); letter-spacing: 0.06em; }
.idx { font-family: var(--mono); color: var(--warm); white-space: nowrap; }
.section-head { max-width: 720px; margin-bottom: 44px; }
.section-head h2 { margin: 0 0 16px; font-family: var(--serif); font-size: clamp(1.75rem,3.5vw,2.5rem); font-weight: 600; line-height: 1.35; letter-spacing: 0.02em; text-wrap: balance; }
.section-head p { margin: 0; font-size: 1.05rem; color: var(--muted); line-height: 1.8; }
.feature-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.feature-card { padding: 30px; background: var(--panel); border: 1px solid var(--line); border-radius: 20px; }
.card-index { margin: 0 0 32px; color: var(--accent); font: 11px/1.6 var(--mono); letter-spacing: 0.02em; }
.feature-card h3 { font-family: var(--serif); font-size: 1.35rem; font-weight: 600; line-height: 1.5; margin: 0 0 14px; }
.feature-card > p:last-child { color: var(--muted); font-size: 14px; margin: 0; line-height: 1.9; }
.section-muted { background: var(--bg-muted); }
.workflow-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 28px; list-style: none; padding: 0; margin: 0; }
.workflow-grid li { border-top: 1px solid var(--line); padding-top: 24px; }
.step-number { color: var(--warm); font: 15px var(--mono); }
.workflow-grid h3 { font-size: 17px; font-weight: 600; margin: 18px 0 10px; }
.workflow-grid p { color: var(--muted); font-size: 14px; margin: 0; }
.workflow-note { border-top: 1px solid var(--line); margin-top: 38px; padding-top: 22px; }
.workflow-note p { margin: 0; font-size: 13px; color: var(--muted); }
.install-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.install-steps { padding: 0; margin: 0 0 28px; list-style: none; counter-reset: install; }
.install-steps li { position: relative; padding-left: 44px; margin-bottom: 28px; counter-increment: install; }
.install-steps li::before { content: counter(install, decimal-leading-zero); position: absolute; top: 3px; left: 0; color: var(--warm); font: 13px/1.7 var(--mono); }
.install-steps h3 { font-size: 16px; font-weight: 600; margin: 0 0 8px; }
.install-steps p { font-size: 14px; margin: 0; color: var(--muted); }
.text-link { display: inline-block; color: var(--accent); font-size: 14px; text-decoration: underline; text-underline-offset: 5px; padding-block: 6px; }
.text-link:hover { color: var(--text); }
.code-card { min-width: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 20px; overflow: hidden; }
.code-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 22px; background: var(--bg-muted); border-bottom: 1px solid var(--line); font-size: 13px; }
.copy-button { color: var(--text); background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 8px 12px; font-size: 12px; cursor: pointer; }
.copy-button:hover { background: var(--accent-soft); }
pre { margin: 0; padding: 24px; overflow: auto; font: 12px/2 var(--mono); }
code { font-family: var(--mono); }
.code-note { border-top: 1px solid var(--line); padding: 18px 24px 0; margin: 0; color: var(--muted); font-size: 12px; }
.copy-status { min-height: 22px; margin: 8px 24px 14px; color: var(--accent); font-size: 12px; }
.faq-layout { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 64px; }
.faq-layout .section-head { margin-bottom: 18px; }
.faq-list { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.faq-item { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; }
.faq-item summary { padding: 20px 22px; font-size: 15px; font-weight: 500; cursor: pointer; }
.faq-item summary::marker { color: var(--accent); font-size: 12px; }
.faq-item[open] summary { padding-bottom: 12px; }
.faq-item p { margin: 0; padding: 0 22px 22px; color: var(--muted); font-size: 14px; line-height: 1.85; }
.site-footer { padding: 40px 0; border-top: 1px solid var(--line); background: var(--panel); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13px; color: var(--muted); }
.footer-links a:hover { text-decoration: underline; text-underline-offset: 4px; }
.footer-copy { width: 100%; margin: 0; font-size: 12px; color: var(--faint); }
@media (max-width: 1100px) {
  .site-nav .container { gap: 12px; }
  .site-nav .brand-name { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .site-nav .brand-short { display: inline; }
  .feature-card { padding: 24px; }
  .install-grid, .faq-layout { gap: 36px; }
}
@media (max-width: 760px) {
  .container { width: calc(100% - 36px); }
  .site-nav .container { flex-wrap: wrap; gap: 0 12px; padding-top: 8px; }
  .nav-cta { margin-left: auto; }
  .nav-github { display: none; }
  .nav-links { order: 3; width: 100%; justify-content: center; padding: 4px 0; }
  .nav-links a { padding: 8px 14px; }
  .nav-cta .btn { padding: 8px 14px; font-size: 12px; }
  .lang-switch button { min-height: 32px; }
  section { padding: 56px 0; scroll-margin-top: 120px; }
  main { scroll-margin-top: 120px; }
  .hero { padding: 44px 0 32px; }
  .hero-identity { margin-bottom: 22px; }
  .hero-identity img { width: 58px; height: 58px; }
  .hero-identity p { font-size: 18px; margin-top: 14px; }
  .eyebrow { font-size: 11px; margin-bottom: 20px; }
  .hero h1 { font-size: clamp(1.75rem,5.5vw,2.5rem); }
  .hero .lead { font-size: 15px; max-width: 520px; }
  .hero-actions { gap: 8px; margin-bottom: 36px; }
  .hero-actions .btn { font-size: 12px; padding: 10px 14px; }
  .hero-visual { border-radius: 12px; }
  .visual-caption { font-size: 12px; }
  .integrations { padding: 22px 0 32px; }
  .host-list { gap: 16px 24px; }
  .host-list li { font-size: 15px; }
  .section-head { margin-bottom: 30px; }
  .section-head p { font-size: 15px; }
  .section-label { font-size: 11px; }
  .feature-grid, .install-grid, .faq-layout { grid-template-columns: 1fr; }
  .feature-grid { gap: 14px; }
  .card-index { margin-bottom: 18px; }
  .workflow-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 28px 24px; }
  .install-grid, .faq-layout { gap: 32px; }
  .code-header { padding: 14px 18px; }
  pre { padding: 20px; font-size: 11px; }
  .footer-inner { align-items: flex-start; flex-direction: column; gap: 22px; }
  .footer-links { gap: 14px 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}