:root{--ltc-accent:#04aa6d}.ltc-app{font-family:Arial,Helvetica,sans-serif;color:#222;background:#fff}.ltc-top{position:sticky;top:0;z-index:9999;display:flex;align-items:center;gap:20px;min-height:58px;padding:0 18px;background:#fff;border-bottom:1px solid #ddd}.ltc-logo{font-size:22px;font-weight:800;white-space:nowrap}.ltc-logo span{font-weight:400}.ltc-langbar{display:flex;gap:4px;overflow-x:auto;white-space:nowrap}.ltc-langbar a{padding:10px 13px;text-decoration:none;color:#222;border-radius:4px;font-size:14px}.ltc-langbar a:hover,.ltc-langbar a.active{background:var(--ltc-accent);color:#fff}.ltc-menu-btn{display:none;background:var(--ltc-accent);color:#fff;border:0;padding:8px 12px;border-radius:4px;font-size:20px}.ltc-grid{display:grid;grid-template-columns:270px minmax(0,1fr) 220px;min-height:calc(100vh - 58px)}.ltc-sidebar{background:#f8f8f8;border-right:1px solid #ddd;position:sticky;top:58px;height:calc(100vh - 58px);overflow-y:auto}.ltc-side-title{padding:16px 18px;font-weight:700;background:#eee;border-bottom:1px solid #ddd}.ltc-sidebar a{display:block;padding:9px 18px;color:#333;text-decoration:none;font-size:14px;border-left:4px solid transparent}.ltc-sidebar a:hover{background:#e9e9e9}.ltc-sidebar a.current{background:#dff3eb;color:#078654;border-left-color:var(--ltc-accent);font-weight:700}.ltc-content{max-width:900px;width:100%;margin:auto;padding:30px 42px;box-sizing:border-box}.ltc-crumb{font-size:13px;color:#777;margin-bottom:16px}.ltc-content h1{font-size:36px;margin:0 0 20px}.ltc-nav{display:flex;justify-content:space-between;gap:15px;margin:20px 0}.ltc-nav a{background:var(--ltc-accent);color:#fff;text-decoration:none;padding:10px 17px;border-radius:5px;font-weight:600}.ltc-nav.bottom{border-top:1px solid #ddd;padding-top:20px}.ltc-article{font-size:17px;line-height:1.75}.ltc-code{position:relative;background:#1e1e1e;border-radius:7px;overflow:auto;margin:20px 0}.ltc-code pre{margin:0;padding:22px;color:#f5f5f5;min-width:450px;line-height:1.6}.ltc-copy{position:absolute;right:8px;top:8px;border:0;padding:6px 10px;border-radius:4px;cursor:pointer}.ltc-right{padding:20px 12px;background:#fafafa}.ltc-ad{height:250px;border:1px dashed #ccc;display:flex;align-items:center;justify-content:center;color:#999;font-size:12px}.ltc-box{margin-top:20px;padding:15px;border:1px solid #ddd;background:#fff}.ltc-box p{font-size:13px}@media(max-width:1100px){.ltc-grid{grid-template-columns:270px minmax(0,1fr)}.ltc-right{display:none}}@media(max-width:768px){.ltc-top{flex-wrap:wrap;padding:8px 12px}.ltc-menu-btn{display:block}.ltc-langbar{order:3;width:100%}.ltc-grid{display:block}.ltc-sidebar{position:fixed;left:-280px;top:0;width:270px;height:100vh;z-index:10000;transition:left .25s;box-shadow:3px 0 12px rgba(0,0,0,.2)}.ltc-sidebar.open{left:0}.ltc-content{padding:24px 18px}.ltc-content h1{font-size:29px}.ltc-code pre{min-width:0}}