.chuyen-theme{border:1px solid var(--vien);background:var(--mat);width:2.1rem;min-width:2.1rem;height:2.1rem;color:var(--phu);cursor:pointer;border-radius:50%;flex:none;justify-content:center;align-items:center;padding:0;transition:border-color .15s,color .15s;display:inline-flex}.chuyen-theme:hover{border-color:var(--nhan);color:var(--nhan)}.chuyen-theme svg{display:none}.chuyen-theme[data-che-do=auto] .bt-auto,.chuyen-theme[data-che-do=light] .bt-sang,.chuyen-theme[data-che-do=dark] .bt-toi{display:block}.chon-ngon-ngu{display:inline-flex;position:relative}.cnn-nut{height:2.1rem;font:inherit;color:var(--phu);border:1px solid var(--vien);background:var(--mat);cursor:pointer;border-radius:999px;align-items:center;gap:.3rem;padding:0 .6rem;font-size:.8rem;font-weight:700;transition:border-color .15s,color .15s;display:inline-flex}.cnn-nut:hover,.cnn-nut[aria-expanded=true]{border-color:var(--nhan);color:var(--nhan)}.cnn-menu{z-index:20;background:var(--mat);border:1px solid var(--vien);min-width:9rem;box-shadow:var(--bong);border-radius:.7rem;margin:0;padding:.3rem;list-style:none;position:absolute;top:calc(100% + .4rem);right:0}.cnn-menu[hidden]{display:none}.cnn-menu li{margin:0}.cnn-menu a{color:var(--chu);white-space:nowrap;border-radius:.5rem;padding:.5rem .8rem;font-size:.93rem;font-weight:500;display:block}.cnn-menu a:hover{background:var(--nhan-nhe);color:var(--nhan);text-decoration:none}.cnn-menu a[aria-current=true]{color:var(--nhan);font-weight:700}.tai-khoan{display:inline-flex;position:relative}.tk-nut{border:1px solid var(--vien);background:var(--mat);width:2.1rem;min-width:2.1rem;height:2.1rem;color:var(--phu);cursor:pointer;border-radius:50%;flex:none;justify-content:center;align-items:center;padding:0;transition:border-color .15s,color .15s,opacity .15s;display:inline-flex}.tk-nut:hover:not(:disabled){border-color:var(--nhan);color:var(--nhan)}.tk-nut:disabled{opacity:.55;cursor:progress}.tk-nut[hidden]{display:none}.tk-google{background:#fff;border-color:#dadce0}.tk-google:hover:not(:disabled){background:#f8f9fa;border-color:#d2e3fc}:root[data-theme=dark] .tk-google{background:#131314;border-color:#8e918f}:root[data-theme=dark] .tk-google:hover:not(:disabled){background:#1f1f20;border-color:#a8abad}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .tk-google{background:#131314;border-color:#8e918f}:root:not([data-theme=light]) .tk-google:hover:not(:disabled){background:#1f1f20;border-color:#a8abad}}.tk-loi{z-index:20;width:max-content;max-width:14rem;color:var(--chu);background:var(--mat);border:1px solid var(--do);box-shadow:var(--bong);border-radius:.5rem;padding:.4rem .7rem;font-size:.82rem;position:absolute;top:calc(100% + .4rem);right:0}.tk-loi[hidden]{display:none}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--nen:#f7f5f0;--mat:#fff;--chu:#1f2421;--phu:#5f6764;--vien:#e6e1d6;--nhan:#b5472b;--nhan-nhe:#f8e9e3;--xanh:#2f7d57;--do:#b03a2e;--bong:0 1px 2px #1f24210f, 0 4px 16px #1f24210d}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}:root[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--nen:#14161a;--mat:#1d2026;--chu:#ecebe6;--phu:#a3aaa6;--vien:#2d3138;--nhan:#e58a6b;--nhan-nhe:#2e2420;--xanh:#5fbf8a;--do:#e0796b;--bong:0 1px 2px #0000004d, 0 4px 16px #0003}}:root[data-theme=dark]{--nen:#14161a;--mat:#1d2026;--chu:#ecebe6;--phu:#a3aaa6;--vien:#2d3138;--nhan:#e58a6b;--nhan-nhe:#2e2420;--xanh:#5fbf8a;--do:#e0796b;--bong:0 1px 2px #0000004d, 0 4px 16px #0003}*{box-sizing:border-box}body{background:var(--nen);color:var(--chu);-webkit-font-smoothing:antialiased;margin:0;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,Arial,sans-serif;line-height:1.6}.thanh-tren{z-index:10;background:var(--nen);border-bottom:1px solid var(--vien);position:-webkit-sticky;position:sticky;top:0}.thanh-tren-noi{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.4rem 1rem;max-width:46rem;margin:0 auto;padding:.6rem 1rem;display:flex}.ten-web{letter-spacing:-.02em;color:var(--chu);align-items:center;gap:.55rem;font-size:1.2rem;font-weight:800;text-decoration:none;display:inline-flex}.ten-web:hover{text-decoration:none}.ten-web .logo{flex:none}.ten-web span span{color:var(--nhan)}.thanh-tren-phai{align-items:center;gap:.9rem;display:flex}.thanh-tren nav{gap:1rem;font-size:.93rem;font-weight:600;display:flex}.nut-menu{border:1px solid var(--vien);background:var(--mat);width:2.1rem;height:2.1rem;color:var(--phu);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;padding:0;transition:border-color .15s,color .15s;display:none}.nut-menu:hover,.thanh-tren[data-mo] .nut-menu{border-color:var(--nhan);color:var(--nhan)}@media (max-width:640px){.nut-menu{display:inline-flex}.thanh-tren nav{display:none}.thanh-tren[data-mo] nav{background:var(--nen);border-bottom:1px solid var(--vien);flex-direction:column;gap:0;padding:.3rem 1rem .6rem;font-size:1rem;display:flex;position:absolute;top:100%;left:0;right:0}.thanh-tren nav a{border-top:1px solid var(--vien);padding:.7rem 0}.thanh-tren nav a:first-child{border-top:0}}.thanh-tren nav a{color:var(--phu)}.thanh-tren nav a:hover,.thanh-tren nav a[aria-current=page]{color:var(--nhan)}.chan-trang{border-top:1px solid var(--vien);max-width:46rem;color:var(--phu);flex-wrap:wrap;justify-content:space-between;gap:1rem;margin:0 auto;padding:1rem 1rem 2rem;font-size:.85rem;display:flex}main{max-width:46rem;margin:0 auto;padding:1.5rem 1rem 3rem}a{color:var(--nhan);text-decoration:none}a:hover{text-underline-offset:3px;text-decoration:underline}h1{letter-spacing:-.02em;margin:.6rem 0 .8rem;font-size:max(1.5rem,min(4vw,2rem));line-height:1.2}h2{letter-spacing:-.01em;margin:1.8rem 0 .6rem;font-size:1.1rem}p{margin:.5rem 0}.phu{color:var(--phu);font-size:.93rem}.the{background:var(--mat);border:1px solid var(--vien);box-shadow:var(--bong);border-radius:14px;margin:.75rem 0;padding:.9rem 1.1rem}.canh-bao{background:var(--nhan-nhe);color:var(--chu);border-left:3px solid var(--do);border-radius:10px;padding:.6rem .9rem}ul{padding-left:1.2rem}ul li{margin:.2rem 0}body.nhung main{max-width:none;padding:.5rem}:focus-visible{outline:2px solid var(--nhan);outline-offset:2px;border-radius:4px}