:root{--ink:#1F183E;--violet:#4F2780;--orange:#EE4421;--paper:#F6F4F4;--muted:#5d576b;--line:#E8E4E9;--soft:#f3edf7;--white:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--paper);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit}img{max-width:100%;height:auto}
.gw{width:min(1120px,calc(100% - 32px));margin-inline:auto}
.gsb{background:var(--ink);color:#fff;padding:7px 16px;font-size:11px;letter-spacing:.08em;text-align:center}.gsb a{color:inherit}
.gh{position:sticky;top:0;z-index:50;background:rgba(246,244,244,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(31,24,62,.08)}
.ghn{display:flex;align-items:center;justify-content:space-between;gap:18px;height:72px}
.glogo{font-weight:900;font-size:24px;letter-spacing:-.06em;white-space:nowrap;line-height:1;text-decoration:none}.glogo span{color:var(--orange)}
.glogo small{display:block;font-size:9px;letter-spacing:.11em;margin-top:7px;color:var(--muted);font-weight:800}.glogo.light{color:#fff}
.gnav{display:flex;gap:24px;font-size:13px;font-weight:700}.gnav a{text-decoration:none}.gnav a:hover{color:var(--orange)}
.gbtn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;padding:12px 18px;font-size:14px;font-weight:800;color:#fff;background:var(--orange);text-decoration:none;box-shadow:0 8px 22px rgba(238,68,33,.18);border:0;cursor:pointer}
.gbtn:hover{transform:translateY(-1px)}.gbtn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:none}
.gcr{font-size:12px;color:var(--muted);padding:18px 0 6px}.gcr a{text-decoration:none}.gcr a:hover{color:var(--orange)}
/* bài */
.gart{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:40px;align-items:start;padding-bottom:60px}
.gart>.gcr{grid-column:1/-1}
article{min-width:0;background:#fff;border:1px solid var(--line);border-radius:22px;padding:clamp(20px,4vw,44px)}
.geye{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--violet);margin:0 0 10px}
article h1{font-size:clamp(28px,3.6vw,42px);line-height:1.18;letter-spacing:-.03em;margin:0 0 12px;text-wrap:balance}
.gmeta{font-size:13px;color:var(--muted);margin:0 0 22px}
.gsum{background:var(--soft);border-left:4px solid var(--violet);border-radius:14px;padding:18px 20px;margin:0 0 24px;font-size:16px}
.gsum>b{display:block;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--violet);margin-bottom:6px}.gsum p:last-child{margin-bottom:0}
.gtoc{border:1px solid var(--line);border-radius:14px;padding:14px 18px;margin:0 0 28px;font-size:14px}.gtoc b{font-size:13px}.gtoc ol{margin:8px 0 0;padding-left:20px}.gtoc a{text-decoration:none;color:var(--violet)}
.gbody{font-size:17px}.gbody h2{font-size:clamp(22px,2.4vw,28px);line-height:1.25;letter-spacing:-.02em;margin:38px 0 12px;scroll-margin-top:90px;text-wrap:balance}
.gbody h3{font-size:19px;margin:24px 0 8px}.gbody p{margin:0 0 14px}.gbody ul,.gbody ol{padding-left:22px;margin:0 0 16px}.gbody li{margin-bottom:6px}
.gbody a{color:var(--violet)}.gbody strong{font-weight:800}
.gtbl{overflow-x:auto;margin:6px 0 20px;border:1px solid var(--line);border-radius:14px}
.gtbl table{border-collapse:collapse;width:100%;font-size:15px;font-variant-numeric:tabular-nums}
.gtbl th,.gtbl td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.gtbl th{background:var(--soft);font-size:13px}.gtbl tr:last-child td{border-bottom:0}
.gnote{font-size:13px;color:var(--muted)}
.gbox{border-radius:16px;padding:18px 20px;margin:18px 0}.gbox.red{background:#fff1ed;border:1px solid #f6c9bd}.gbox.do{background:#f1f8f3;border:1px solid #cfe7d6}
.gbox h3{margin-top:0}
.gcta{display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:linear-gradient(135deg,#1F183E,#4F2780);color:#fff;border-radius:18px;padding:22px 24px;margin:28px 0}
.gcta b{font-size:18px}.gcta p{margin:6px 0 0;color:#ded6ea;font-size:14px;max-width:460px}.gctab{display:flex;gap:10px;flex-wrap:wrap}
.gfaq details{border-bottom:1px solid var(--line);padding:12px 0}.gfaq summary{cursor:pointer;font-weight:800;font-size:16px}.gfaq details div{margin-top:8px;color:#3d3754}
.gsrc ol{font-size:13px;color:var(--muted);padding-left:20px}.gsrc a{color:var(--muted);word-break:break-word}
.grev{margin-top:26px;background:var(--paper);border-radius:14px;padding:16px 18px;font-size:13px;color:var(--muted)}.grev p{margin:4px 0 0}
.grel{position:sticky;top:96px;display:grid;gap:10px;font-size:14px}.grel b{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--violet)}
.grel a{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;text-decoration:none;font-weight:700;line-height:1.4}.grel a:hover{border-color:var(--violet)}
/* thư viện */
.ghub{padding-bottom:60px}.ghub h1{font-size:clamp(30px,4vw,46px);margin:8px 0 10px;letter-spacing:-.03em}
.glead{font-size:18px;color:var(--muted);max-width:760px;margin:0 0 26px}
.gpil{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-bottom:30px}
.gpil a{display:block;text-decoration:none;background:linear-gradient(145deg,#4F2780,#1F183E);color:#fff;border-radius:20px;padding:24px}
.gpil span{font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:#ffb6a3}.gpil b{display:block;font-size:22px;margin:8px 0;line-height:1.25}.gpil p{color:#ddd5ea;font-size:14px;margin:0}
.ghub section h2{font-size:22px;margin:28px 0 12px}
.gcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.gcards a{display:block;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;text-decoration:none}.gcards a:hover{border-color:var(--violet)}
.gcards b{display:block;font-size:17px;line-height:1.35;margin-bottom:6px}.gcards p{font-size:14px;color:var(--muted);margin:0}
/* công cụ */
.gtool{padding-bottom:60px}.gtool h1{font-size:clamp(28px,3.6vw,42px);letter-spacing:-.03em;margin:8px 0 8px;text-wrap:balance}
.tgrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px;align-items:start}
.tcard{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px}
.tcard label{display:block;font-size:13px;font-weight:800;margin:12px 0 6px}.tcard input,.tcard select{width:100%;padding:12px 14px;border:1px solid #d9d3df;border-radius:12px;font-size:16px;background:#fff;color:var(--ink)}
.trow{display:grid;grid-template-columns:1fr 1fr;gap:12px}.tseg{display:flex;gap:8px}.tseg label{flex:1;margin:0;border:1px solid #d9d3df;border-radius:12px;padding:11px;text-align:center;cursor:pointer;font-weight:800}
.tseg input{position:absolute;opacity:0;width:1px;height:1px}.tseg input:checked+span{color:var(--orange)}.tseg label:has(input:checked){border-color:var(--orange);background:#fff4f1}
.thint{font-size:12px;color:var(--muted);margin-top:4px}
.tres{min-height:200px}.tres[hidden]{display:none}.tflag{border-radius:16px;padding:16px 18px;margin-bottom:14px}
.tflag.red{background:#fff1ed;border:1px solid #f6c9bd}.tflag.yellow{background:#fff9e8;border:1px solid #f1dfa4}.tflag.green{background:#f1f8f3;border:1px solid #cfe7d6}
.tflag b{font-size:18px}.tstat{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:12px 0}.tstat div{background:var(--paper);border-radius:12px;padding:12px}
.tstat span{display:block;font-size:12px;color:var(--muted)}.tstat strong{font-size:22px;font-variant-numeric:tabular-nums}
.tbar{position:relative;height:14px;border-radius:99px;background:linear-gradient(90deg,#f6c9bd 0 3%,#f1dfa4 3% 10%,#cfe7d6 10% 90%,#f1dfa4 90% 97%,#f6c9bd 97%);margin:18px 0 6px}
.tbar i{position:absolute;top:-6px;width:4px;height:26px;background:var(--ink);border-radius:2px;transform:translateX(-50%)}
.tsc{display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}
.tpriv{font-size:12px;color:var(--muted);margin-top:12px}
/* chân trang */
.gf{background:#17122d;color:#cfc8dc;padding:40px 0 30px;margin-top:20px}.gfg{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:26px}
.gf b{display:block;color:#fff;font-size:13px;margin-bottom:8px}.gf a{display:block;text-decoration:none;font-size:14px;margin-bottom:6px}.gf a:hover{color:#fff}.gf p{font-size:13px}
.gleg{border-top:1px solid #2e2648;margin-top:22px;padding-top:16px;font-size:12px!important;color:#9e96b0}
@media(max-width:900px){.gnav{display:none}.gart{grid-template-columns:1fr}.grel{position:static}.tgrid{grid-template-columns:1fr}.gfg{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.ghn{height:64px}.glogo{font-size:20px}.gbtn{padding:11px 14px;font-size:13px}.gfg{grid-template-columns:1fr}.trow{grid-template-columns:1fr}.gbody{font-size:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.gbtn:hover{transform:none}}
.ghero{margin:0 0 22px}.ghero img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border-radius:16px}
.gfig{margin:22px 0}.gfig img{display:block;width:100%;height:auto;border-radius:14px}
.ghero figcaption,.gfig figcaption{font-size:13px;color:var(--muted);margin-top:8px}
.gthumb{display:block;width:calc(100% + 36px);max-width:none;height:auto!important;aspect-ratio:16/9;object-fit:cover;margin:-18px -18px 14px;border-radius:16px 16px 0 0}
.gcards a{overflow:hidden}.gpil a{overflow:hidden}.gpil .gthumb{width:calc(100% + 48px);margin:-24px -24px 16px;border-radius:20px 20px 0 0}
.gpil .gthumb{aspect-ratio:21/9}@media(max-width:520px){.gpil .gthumb{aspect-ratio:16/9}}