:root{--bg:#f3f6f7;--paper:#fff;--ink:#0c1013;--muted:#56616b;--line:#dfe3e6;--accent:#ff4650;--accent-2:#168ff2;--soft:#fff3f3;--shadow:0 14px 44px #2a42501a}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0e1215;--paper:#161b1f;--ink:#eef2f4;--muted:#a3adb5;--line:#2a3238;--accent:#ff6a72;--accent-2:#4aa8ff;--soft:#2a1a1c;--shadow:none}}
:root[data-theme="dark"]{--bg:#0e1215;--paper:#161b1f;--ink:#eef2f4;--muted:#a3adb5;--line:#2a3238;--accent:#ff6a72;--accent-2:#4aa8ff;--soft:#2a1a1c;--shadow:none}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"Noto Sans SC","PingFang SC","Hiragino Sans","Apple SD Gothic Neo","Noto Sans Thai","Noto Sans Arabic",system-ui,sans-serif;line-height:1.6}
a{color:var(--accent-2)}
.lg-top{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px max(16px,calc((100% - 1100px)/2));background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.lg-brand{display:flex;align-items:center;gap:6px;font-weight:900;font-size:18px;color:var(--ink);text-decoration:none;white-space:nowrap}
.lg-brand span{color:var(--accent);font-size:24px;line-height:1}
.lg-top-actions{display:flex;align-items:center;gap:10px;min-width:0}
#lg-lang{height:34px;max-width:150px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);padding:0 8px;font:inherit;font-size:13px;font-weight:700}
.lg-back{height:34px;display:inline-flex;align-items:center;padding:0 14px;border-radius:10px;background:var(--accent);color:#fff;font-size:13px;font-weight:800;text-decoration:none;white-space:nowrap}
.lg-tabs{display:flex;gap:6px;overflow-x:auto;padding:12px max(16px,calc((100% - 1100px)/2));border-bottom:1px solid var(--line);background:var(--paper);scrollbar-width:none}
.lg-tabs::-webkit-scrollbar{display:none}
.lg-tabs a{flex:none;padding:8px 14px;border-radius:999px;border:1px solid var(--line);color:var(--muted);font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap}
.lg-tabs a:hover{color:var(--ink)}
.lg-tabs a.active{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.lg-main{width:min(1100px,calc(100% - 32px));margin:0 auto;padding:40px 0 64px}
.lg-hero{max-width:760px}
.lg-eyebrow{margin:0;color:var(--accent);font-size:12px;font-weight:900;letter-spacing:.14em;text-transform:uppercase}
.lg-hero h1{margin:8px 0 12px;font-size:clamp(30px,5vw,48px);line-height:1.1;letter-spacing:-.02em}
.lg-intro{margin:0 0 14px;color:var(--muted);font-size:17px}
.lg-meta{margin:0;color:var(--muted);font-size:13px}
.lg-meta b{color:var(--ink)}
.lg-note{margin:16px 0 0;padding:10px 14px;border-radius:12px;background:var(--soft);color:var(--muted);font-size:13px}
.lg-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;margin-top:36px;align-items:start}
.lg-toc{position:sticky;top:130px;max-height:calc(100vh - 150px);overflow:auto;font-size:13px}
.lg-toc p{margin:0 0 8px;font-weight:900;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.lg-toc ol{list-style:none;margin:0;padding:0;border-inline-start:2px solid var(--line)}
.lg-toc a{display:block;padding:5px 12px;color:var(--muted);text-decoration:none}
.lg-toc a:hover{color:var(--ink)}
.lg-doc{min-width:0;background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:8px 36px 28px;box-shadow:var(--shadow)}
.lg-doc section{scroll-margin-top:130px;padding-top:24px}
.lg-doc section+section{border-top:1px solid var(--line);margin-top:24px}
.lg-doc h2{margin:0 0 10px;font-size:20px;line-height:1.3}
.lg-doc p,.lg-doc li{color:var(--muted);font-size:15.5px;line-height:1.8;overflow-wrap:anywhere}
.lg-doc p{margin:10px 0}
.lg-doc b{color:var(--ink)}
.lg-doc ul{margin:10px 0;padding-inline-start:22px}
.lg-doc li{margin:6px 0}
.lg-doc li::marker{color:var(--accent)}
.lg-nowrap{white-space:nowrap}
.lg-foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 20px;padding:20px max(16px,calc((100% - 1100px)/2));border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.lg-foot b{color:var(--ink)}
.lg-foot a{color:inherit}
@media (max-width:820px){
  .lg-layout{grid-template-columns:1fr;gap:20px;margin-top:24px}
  .lg-toc{display:none}
  .lg-doc{padding:4px 18px 20px;border-radius:16px}
  .lg-main{padding-top:28px}
  #lg-lang{max-width:118px}
  .lg-nowrap{white-space:normal}
}
@media (max-width:400px){.lg-brand{font-size:0}.lg-brand span{font-size:26px}}