/* Giáo trình Claude Code cho CEO VietGlobal — theo 00-brand/brand-tokens.css */
:root{
  --red:#9E0E0E;--red2:#C72528;--hot:#E01212;--deep:#5C0707;--ink:#161616;--gold:#EECB00;--gold-soft:#FFF6CC;
  --rose:#FBE9E9;--paper:#fff;--mist:#F5F4F2;--line:#E6E6E6;--muted:#6E6E6E;--ok:#478C02;--ok-soft:#EEF6E4;
  --grad:linear-gradient(135deg,#140404 0%,#5C0707 38%,#9E0E0E 72%,#C72528 100%);
  --fh:'Helvetica Neue','Be Vietnam Pro',Arial,sans-serif;--fb:'Be Vietnam Pro','Helvetica Neue',Arial,sans-serif;
  --mono:'Cascadia Code',Consolas,'SFMono-Regular',Menlo,monospace;
  --r:14px;--sh:0 1px 2px rgba(22,22,22,.06),0 6px 24px rgba(22,22,22,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;font:400 16px/1.65 var(--fb);color:var(--ink);background:var(--mist);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--red)}
code,.mono{font-family:var(--mono);font-size:.88em}
code{background:#F1ECEC;color:var(--deep);padding:.1em .4em;border-radius:5px;word-break:break-word}
mark{background:var(--gold-soft);color:#5a4a00;padding:0 .2em;border-radius:3px;box-shadow:inset 0 -2px 0 var(--gold)}
h1,h2,h3,h4{font-family:var(--fh);line-height:1.2;margin:0}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.narrow{max-width:860px}

/* ---------- Topbar ---------- */
.top{position:sticky;top:0;z-index:50;background:rgba(22,22,22,.94);backdrop-filter:blur(8px);color:#fff}
.top .wrap{display:flex;align-items:center;gap:14px;height:60px}
.top img{height:30px;width:auto}
.top .ten{font:700 14px/1.2 var(--fb);letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top .ten small{display:block;font-weight:400;color:#bbb;font-size:11.5px}
.top .sp{flex:1}
.tien-do{display:flex;align-items:center;gap:10px;font-size:13px;white-space:nowrap}
.tien-do .thanh{width:120px;height:7px;border-radius:9px;background:#3a3a3a;overflow:hidden}
.tien-do .thanh i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gold),#ffe666);transition:width .5s}
.nut-muc{background:var(--red);color:#fff;border:0;border-radius:99px;padding:8px 15px;font:600 13.5px var(--fb);cursor:pointer}
.nut-muc:hover{background:var(--red2)}
@media(max-width:700px){.tien-do .thanh{display:none}.top .ten small{display:none}.top .ten{font-size:13px}}

/* ---------- Drawer ---------- */
.ngan{position:fixed;inset:0;z-index:80;pointer-events:none}
.ngan .nen{position:absolute;inset:0;background:rgba(0,0,0,.45);opacity:0;transition:.25s}
.ngan nav{position:absolute;right:0;top:0;bottom:0;width:min(380px,92vw);background:#fff;transform:translateX(100%);transition:.3s;overflow:auto;padding:18px 18px 40px}
.ngan.mo{pointer-events:auto}.ngan.mo .nen{opacity:1}.ngan.mo nav{transform:none}
.ngan h4{font:700 11px/1 var(--fb);letter-spacing:.16em;text-transform:uppercase;color:var(--red);margin:18px 0 8px}
.ngan a{display:flex;gap:10px;align-items:center;padding:7px 10px;border-radius:8px;color:var(--ink);text-decoration:none;font-size:14.5px}
.ngan a:hover{background:var(--rose)}
.ngan a .so{flex:0 0 26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--mist);font:700 12px var(--fb)}
.ngan a.xong .so{background:var(--ok);color:#fff}
.ngan .dong{float:right;border:0;background:var(--mist);border-radius:99px;width:34px;height:34px;font-size:18px;cursor:pointer}

/* ---------- Hero ---------- */
.hero{background:var(--grad);color:#fff;position:relative;overflow:hidden;padding:64px 0 70px}
.hero:before{content:"";position:absolute;right:-180px;top:-160px;width:720px;height:720px;border-radius:50%;
  background:repeating-radial-gradient(circle,rgba(238,203,0,.14) 0 1px,transparent 1px 34px);pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.kicker{font:700 12px/1.3 var(--fb);letter-spacing:.18em;text-transform:uppercase;color:var(--gold)}
.hero h1{font-size:clamp(34px,5vw,58px);font-weight:800;text-transform:uppercase;letter-spacing:-.01em;margin:14px 0 16px}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero p.lead{font-size:18px;color:#f3dede;max-width:560px;margin:0 0 22px}
.so-lieu{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:26px 0}
.so-lieu div{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:12px;padding:12px 10px}
.so-lieu b{display:block;font:800 28px/1 var(--fh);color:var(--gold)}
.so-lieu span{font-size:12px;color:#f0d6d6;line-height:1.35;display:block;margin-top:6px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:99px;padding:13px 22px;font:700 15px var(--fb);text-decoration:none;cursor:pointer;border:0}
.btn.vang{background:var(--gold);color:#2a1a00}.btn.vang:hover{background:#ffe14d}
.btn.vien{border:1.5px solid rgba(255,255,255,.5);color:#fff;background:transparent}.btn.vien:hover{background:rgba(255,255,255,.1)}
.btn.do{background:var(--red);color:#fff}.btn.do:hover{background:var(--red2)}
.ban-in{margin-top:18px;font-size:12.5px;color:#d9b9b9}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr}.so-lieu{grid-template-columns:repeat(3,1fr)}}
@media(max-width:520px){.so-lieu{grid-template-columns:repeat(2,1fr)}.hero{padding:40px 0 50px}}

/* ---------- VS Code / terminal mock ---------- */
.vsc{background:#1e1e1e;border-radius:14px;box-shadow:0 30px 60px rgba(0,0,0,.45);overflow:hidden;color:#ddd;font-size:13.5px;border:1px solid #333}
.vsc .bar{display:flex;align-items:center;gap:7px;background:#2d2d2d;padding:9px 12px;font-size:12px;color:#aaa}
.vsc .bar i{width:11px;height:11px;border-radius:50%;background:#ff5f57}.vsc .bar i+i{background:#febc2e}.vsc .bar i+i+i{background:#28c840}
.vsc .bar span{margin-left:10px}
.vsc .body{display:grid;grid-template-columns:150px 1fr;min-height:360px}
.vsc .cay{background:#252526;padding:10px 0;font:12px/1.9 var(--mono);color:#bbb;border-right:1px solid #333}
.vsc .cay div{padding:0 12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.vsc .cay .on{background:#37373d;color:#fff}
.vsc .chat{padding:14px 16px;display:flex;flex-direction:column;gap:10px}
.vsc .chat .hd{font:600 11px var(--fb);letter-spacing:.12em;color:#999;text-transform:uppercase}
.msg-sep{align-self:flex-end;background:#3a2020;border:1px solid #5c3030;border-radius:12px 12px 2px 12px;padding:9px 12px;max-width:92%;color:#fff}
.msg-ai{color:#ddd;max-width:100%}
.chip{display:inline-flex;align-items:center;gap:6px;background:#2b2b2b;border:1px solid #3d3d3d;border-radius:7px;padding:4px 9px;font:12px var(--mono);color:#cfcfcf;margin:2px 4px 2px 0}
.chip b{color:#7ec27e;font-weight:400}.chip.do b{color:#ff8080}.chip.vang b{color:var(--gold)}
.ok-line{color:#8fd18f}
@media(max-width:520px){.vsc .body{grid-template-columns:1fr}.vsc .cay{display:none}}

/* ---------- Sections ---------- */
section.khoi{padding:64px 0}
section.khoi.trang{background:#fff}
section.khoi.toi{background:var(--ink);color:#eee}
.tieu-de{margin-bottom:28px}
.tieu-de h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;text-transform:uppercase;color:var(--red);margin-top:8px}
.toi .tieu-de h2{color:#fff}
.tieu-de p{color:var(--muted);max-width:760px;margin:10px 0 0;font-size:17px}
.toi .tieu-de p{color:#bbb}
.luoi{display:grid;gap:16px}
.l2{grid-template-columns:repeat(2,1fr)}.l3{grid-template-columns:repeat(3,1fr)}.l4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.l3,.l4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.l2,.l3,.l4{grid-template-columns:1fr}}
.the{background:#fff;border-radius:var(--r);padding:20px;box-shadow:var(--sh);border:1px solid #eee}
.the h3{font-size:18px;margin:6px 0 8px}
.the p{margin:0;color:#444;font-size:15px}
.the .ic{font-size:28px;line-height:1}
.the ul{margin:6px 0 0;padding-left:18px;font-size:15px;color:#333}
.the.vien-do{border-top:4px solid var(--red)}
.the.vien-vang{border-top:4px solid var(--gold)}

/* showcase */
.du-an{display:grid;grid-template-columns:1.25fr 1fr;gap:20px;margin-bottom:22px;background:#fff;border-radius:18px;overflow:hidden;box-shadow:var(--sh);border:1px solid #eee}
.du-an .anh{background:#222;position:relative;min-height:260px}
.du-an .anh img{width:100%;height:100%;object-fit:cover;object-position:top}
.du-an .anh .mobile{position:absolute;right:16px;bottom:-30px;width:28%;border-radius:18px;border:5px solid #111;box-shadow:0 16px 30px rgba(0,0,0,.4);height:auto}
.du-an .nd{padding:24px 26px 24px 4px}
.du-an .nd h3{font-size:24px;color:var(--red);text-transform:uppercase;font-weight:800}
.du-an .nd p{margin:8px 0;color:#444;font-size:15px}
.du-an .link{display:inline-block;margin-top:6px;font:600 14px var(--mono);color:var(--red)}
.tag{display:inline-block;font:700 11px/1 var(--fb);letter-spacing:.08em;text-transform:uppercase;padding:5px 9px;border-radius:99px;background:var(--rose);color:var(--red);margin:0 6px 6px 0}
.tag.vang{background:var(--gold-soft);color:#7A6400}.tag.xanh{background:var(--ok-soft);color:var(--ok)}.tag.den{background:var(--ink);color:#fff}
@media(max-width:820px){.du-an{grid-template-columns:1fr}.du-an .nd{padding:20px}.du-an .anh .mobile{display:none}}

/* ---------- Layer architecture ---------- */
.tang-wrap{display:grid;grid-template-columns:1fr 1.05fr;gap:26px;align-items:start}
.tang{display:flex;flex-direction:column;gap:8px}
.tang button{display:flex;align-items:center;gap:14px;text-align:left;border:1px solid #3a3a3a;background:#222;color:#eee;border-radius:12px;padding:12px 16px;cursor:pointer;font:500 15px var(--fb);transition:.2s;position:relative}
.tang button:hover{border-color:var(--red2)}
.tang button.on{background:var(--grad);border-color:transparent;color:#fff;transform:translateX(6px)}
.tang button .n{flex:0 0 30px;height:30px;border-radius:8px;background:#333;display:grid;place-items:center;font:800 14px var(--fh);color:var(--gold)}
.tang button.on .n{background:rgba(0,0,0,.3)}
.tang button small{display:block;font:12px var(--mono);color:#aaa}
.tang button.on small{color:#f3d0d0}
.tang-ct{background:#fff;color:var(--ink);border-radius:16px;padding:24px;min-height:420px;position:sticky;top:84px}
.tang-ct h3{color:var(--red);font-size:22px}
.tang-ct .duong{font:13px var(--mono);background:var(--mist);padding:6px 10px;border-radius:7px;display:inline-block;margin:8px 0 12px;word-break:break-all}
.tang-ct pre{background:#1e1e1e;color:#ddd;border-radius:10px;padding:14px;font:12.5px/1.6 var(--mono);overflow:auto;margin:12px 0 0;white-space:pre-wrap}
@media(max-width:860px){.tang-wrap{grid-template-columns:1fr}.tang-ct{position:static;min-height:0}}

/* ---------- Course map ---------- */
.chang-the{display:block;text-decoration:none;color:inherit;background:#fff;border-radius:16px;padding:20px;box-shadow:var(--sh);border:1px solid #eee;transition:.2s;position:relative;overflow:hidden}
.chang-the:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(158,14,14,.15)}
.chang-the .tuan{font:800 46px/1 var(--fh);color:var(--rose);position:absolute;right:14px;top:10px}
.chang-the h3{font-size:19px;color:var(--red);margin:4px 0 6px;position:relative}
.chang-the ol{margin:8px 0 0;padding-left:20px;font-size:14px;color:#444}
.chang-the .tg{font-size:13px;color:var(--muted)}

/* ---------- Lesson ---------- */
.chang-hd{background:var(--grad);color:#fff;padding:46px 0 40px;position:relative;overflow:hidden}
.chang-hd h2{font-size:clamp(28px,4vw,44px);font-weight:800;text-transform:uppercase;margin-top:8px}
.chang-hd p{color:#f0d6d6;max-width:720px;margin:10px 0 0;font-size:17px}
.bai{background:#fff;border-radius:22px;margin:30px auto;padding:38px 42px 34px;box-shadow:var(--sh);border:1px solid #eee;max-width:1000px;position:relative}
@media(max-width:620px){.bai{padding:26px 18px;border-radius:16px;margin:18px 10px}}
.bai .meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:13.5px;color:var(--muted);margin-bottom:10px}
.bai .meta b{color:var(--ink)}
.bai .so-bai{font:800 13px/1 var(--fb);letter-spacing:.16em;color:var(--red);text-transform:uppercase}
.bai h2{font-size:clamp(24px,3vw,32px);font-weight:800;margin:8px 0 18px;color:var(--ink)}
.bai h3{font-size:19px;color:var(--red);margin:30px 0 10px;display:flex;align-items:center;gap:10px}
.bai h3:before{content:"";width:10px;height:10px;background:var(--red);flex:0 0 10px}
.bai p{margin:10px 0}
.bai .bai-xong-dau{position:absolute;top:22px;right:24px}
.de-hieu{background:var(--gold-soft);border-left:5px solid var(--gold);border-radius:0 12px 12px 0;padding:14px 18px;font-size:16.5px}
.de-hieu b:first-child{display:block;font:800 12px/1 var(--fb);letter-spacing:.14em;text-transform:uppercase;color:#7A6400;margin-bottom:8px}
.buoc{counter-reset:b;list-style:none;padding:0;margin:12px 0}
.buoc>li{counter-increment:b;position:relative;padding:4px 0 12px 46px}
.buoc>li:before{content:counter(b);position:absolute;left:0;top:2px;width:32px;height:32px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font:800 14px var(--fh)}
.buoc>li:not(:last-child):after{content:"";position:absolute;left:15px;top:38px;bottom:2px;width:2px;background:var(--rose)}
table.bang{width:100%;border-collapse:collapse;font-size:14.5px;margin:12px 0;background:#fff}
table.bang th{background:var(--red);color:#fff;text-align:left;padding:9px 11px;font-weight:700}
table.bang td{border-bottom:1px solid var(--line);padding:9px 11px;vertical-align:top}
table.bang tr:nth-child(even) td{background:#FAFAFA}
.cuon{overflow-x:auto;-webkit-overflow-scrolling:touch}
.callout{border-radius:12px;padding:14px 18px;margin:16px 0;font-size:15px}
.callout b.t{display:block;font:800 12px/1 var(--fb);letter-spacing:.12em;text-transform:uppercase;margin-bottom:8px}
.callout.chuyen{background:#F4F1FA;border-left:5px solid #6b4fa8}.callout.chuyen b.t{color:#6b4fa8}
.callout.can-than{background:var(--rose);border-left:5px solid var(--red)}.callout.can-than b.t{color:var(--red)}
.callout.meo{background:var(--ok-soft);border-left:5px solid var(--ok)}.callout.meo b.t{color:var(--ok)}
.hai-cot{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:12px 0}
@media(max-width:700px){.hai-cot{grid-template-columns:1fr}}
.o-nen{background:var(--mist);border-radius:12px;padding:14px 16px;font-size:15px}
.o-nen h4{font-size:15px;margin-bottom:6px}
.o-nen ul{margin:0;padding-left:18px}
.o-nen.xanh{background:var(--ok-soft)}.o-nen.xanh h4{color:var(--ok)}
.o-nen.do{background:var(--rose)}.o-nen.do h4{color:var(--red)}

/* prompt */
.prompt{border:1.5px solid #2c2c2c;border-radius:12px;overflow:hidden;margin:16px 0;background:#161616}
.prompt .ph{display:flex;align-items:center;justify-content:space-between;gap:10px;background:#2a2a2a;color:#eee;padding:8px 12px;font:600 13px var(--fb)}
.prompt .ph span:before{content:"✦ ";color:var(--gold)}
.prompt pre{margin:0;padding:14px 16px;color:#eaeaea;font:13.5px/1.65 var(--mono);white-space:pre-wrap;word-break:break-word}
.prompt pre mark{background:#4a3d00;color:#ffe773;box-shadow:none}
.copy{background:var(--gold);color:#2a1a00;border:0;border-radius:7px;padding:5px 12px;font:700 12.5px var(--fb);cursor:pointer;white-space:nowrap}
.copy.da{background:var(--ok);color:#fff}

/* checklist & done */
.xong-khi{border:2px dashed #d8c7c7;border-radius:14px;padding:16px 18px;margin-top:30px;background:#FFFCFC}
.xong-khi h4{font:800 13px var(--fb);letter-spacing:.12em;text-transform:uppercase;color:var(--red);margin-bottom:8px}
.xong-khi label{display:flex;gap:10px;align-items:flex-start;padding:5px 0;cursor:pointer;font-size:15px}
.xong-khi input{width:18px;height:18px;accent-color:var(--ok);margin-top:3px;flex:0 0 18px}
.nut-xong{margin-top:12px;background:var(--ink);color:#fff;border:0;border-radius:99px;padding:11px 20px;font:700 14px var(--fb);cursor:pointer}
.nut-xong.da{background:var(--ok)}

/* tabs */
.tabs{margin:14px 0}
.tabs .tb{display:flex;gap:6px;flex-wrap:wrap;border-bottom:2px solid var(--line)}
.tabs .tb button{border:0;background:none;padding:9px 14px;font:600 14px var(--fb);color:var(--muted);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-2px}
.tabs .tb button.on{color:var(--red);border-color:var(--red)}
.tabs .tp{display:none;padding-top:14px}.tabs .tp.on{display:block}

/* flows */
.luong{display:flex;flex-wrap:wrap;align-items:stretch;gap:8px;margin:16px 0}
.luong .o{flex:1 1 120px;background:var(--mist);border-radius:12px;padding:12px;text-align:center;font-size:13.5px;position:relative;border:1px solid #eee}
.luong .o b{display:block;font-size:22px;margin-bottom:4px}
.luong .o.nhan{background:var(--gold-soft);border-color:#f1dd77}
.luong .o.do{background:var(--red);color:#fff}
.luong .mui{align-self:center;color:var(--red);font-weight:800}
@media(max-width:620px){.luong .mui{display:none}}

/* folder tree */
.cay-tm{background:#1e1e1e;color:#ddd;border-radius:12px;padding:16px 18px;font:13px/1.75 var(--mono);overflow-x:auto;white-space:pre;margin:14px 0}
.cay-tm .c{color:#7e7e7e}.cay-tm .v{color:var(--gold)}.cay-tm .d{color:#ff8a8a}.cay-tm .x{color:#8fd18f}

/* simulation player */
.sim{border-radius:14px;border:1px solid #ddd;overflow:hidden;margin:18px 0;background:#fff}
.sim .sh{display:flex;justify-content:space-between;align-items:center;background:var(--ink);color:#fff;padding:8px 12px;font:600 13px var(--fb)}
.sim .sh .lbl:before{content:"▶ MÔ PHỎNG · ";color:var(--gold);font-weight:800;letter-spacing:.06em}
.sim .sh button{background:var(--gold);border:0;border-radius:7px;padding:5px 12px;font:700 12.5px var(--fb);cursor:pointer}
.sim .sb{padding:16px;background:#1e1e1e;color:#ddd;font-size:14px;min-height:120px}
.sim .sb.sang{background:var(--mist);color:var(--ink)}
.sim .st{opacity:.12;transition:opacity .4s,transform .4s;transform:translateY(4px);margin:6px 0}
.sim .st.hien{opacity:1;transform:none}
.sim.chua .st{opacity:.12}

/* kanban */
.kanban{display:grid;grid-template-columns:repeat(5,minmax(170px,1fr));gap:10px;overflow-x:auto;padding-bottom:6px}
.kanban .cot{background:var(--mist);border-radius:12px;padding:10px}
.kanban .cot h5{margin:0 0 8px;font:800 12px var(--fb);letter-spacing:.06em;text-transform:uppercase;color:var(--red)}
.kanban .tk{background:#fff;border-radius:9px;padding:9px 10px;margin-bottom:8px;font-size:13px;border-left:4px solid var(--line);box-shadow:0 1px 2px rgba(0,0,0,.06)}
.kanban .tk b{display:block;font-size:13.5px}
.kanban .tk.tre{border-left-color:var(--hot);background:#fff5f5}.kanban .tk.ok{border-left-color:var(--ok)}.kanban .tk.cho{border-left-color:var(--gold)}

/* phone */
.dt{width:290px;max-width:100%;margin:10px auto;background:#111;border-radius:36px;padding:12px;box-shadow:0 20px 40px rgba(0,0,0,.25)}
.dt .mh{background:#e7ebef;border-radius:26px;overflow:hidden;min-height:430px;font-size:13px}
.dt .tg-hd{background:#2AABEE;color:#fff;padding:12px 14px;font-weight:700;display:flex;gap:10px;align-items:center}
.dt .tg-hd i{width:30px;height:30px;border-radius:50%;background:var(--red);display:grid;place-items:center;font-style:normal;font-size:12px}
.dt .bong{background:#fff;margin:12px;border-radius:12px 12px 12px 3px;padding:10px 12px;line-height:1.5;box-shadow:0 1px 1px rgba(0,0,0,.1)}
.dt .bong .gio{float:right;color:#999;font-size:11px;margin-top:4px}
.zalo-the{background:#fff;margin:12px;border-radius:12px;overflow:hidden;box-shadow:0 1px 2px rgba(0,0,0,.1)}
.zalo-the img{height:140px;width:100%;object-fit:cover;object-position:top}
.zalo-the div{padding:8px 10px;font-size:12.5px}

/* document mock */
.giay{background:#fff;border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.1);border:1px solid #e3e3e3;font-size:12.5px;overflow:hidden}
.giay .gh{background:var(--grad);color:#fff;padding:12px 14px;font:800 15px var(--fh);text-transform:uppercase}
.giay .gh small{display:block;font:500 11px var(--fb);color:var(--gold);text-transform:none;letter-spacing:.04em}
.giay table{width:100%;border-collapse:collapse}
.giay td,.giay th{padding:6px 10px;border-bottom:1px solid #eee;text-align:left}
.giay th{background:#f6f6f6;font-size:11.5px}
.giay .an{background:#ffecec;color:var(--hot);font-weight:700}
.giay .gb{padding:8px 12px;font-size:12px;color:#555}

/* result card */
.ket-qua{border-radius:12px;padding:14px 16px;font-size:14.5px;margin:10px 0}
.ket-qua.dat{background:var(--ok-soft);border:1.5px solid #b8d99a}
.ket-qua.truot{background:#fff1f1;border:1.5px solid #f0b4b4}
.ket-qua h5{margin:0 0 6px;font:800 15px var(--fb)}
.ket-qua.dat h5{color:var(--ok)}.ket-qua.truot h5{color:var(--hot)}
.ket-qua ul{margin:0;padding-left:20px}

/* hook tester */
.hook-test{background:#1e1e1e;border-radius:14px;padding:16px;color:#ddd;margin:16px 0}
.hook-test .hang{display:flex;gap:8px}
.hook-test input{flex:1;background:#111;border:1px solid #444;border-radius:8px;color:#fff;padding:10px 12px;font:14px var(--mono);min-width:0}
.hook-test .goi{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}
.hook-test .goi button{background:#2b2b2b;color:#ccc;border:1px solid #444;border-radius:7px;padding:4px 9px;font:12px var(--mono);cursor:pointer}
.hook-test .kq{margin-top:10px;border-radius:10px;padding:12px 14px;font-size:14px;display:none}
.hook-test .kq.chan{display:block;background:#3a1212;border:1px solid #8a2a2a;color:#ffd5d5}
.hook-test .kq.hoi{display:block;background:#3a3112;border:1px solid #8a7a2a;color:#fff0b8}
.hook-test .kq.qua{display:block;background:#173017;border:1px solid #2f6b2f;color:#cdf3cd}

/* screenshot frame */
.khung{border-radius:12px;overflow:hidden;border:1px solid #ddd;box-shadow:var(--sh);background:#fff;margin:14px 0}
.khung .kbar{display:flex;gap:6px;align-items:center;padding:7px 10px;background:#eee;font:12px var(--mono);color:#666}
.khung .kbar i{width:10px;height:10px;border-radius:50%;background:#ccc}
.khung .kbar span{background:#fff;border-radius:6px;padding:2px 10px;margin-left:8px;flex:1;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.chu-thich{font-size:13px;color:var(--muted);text-align:center;margin-top:6px}

/* timeline */
.dong-tg{position:relative;padding-left:28px;margin:14px 0}
.dong-tg:before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--rose)}
.dong-tg .m{position:relative;padding:4px 0 14px}
.dong-tg .m:before{content:"";position:absolute;left:-24px;top:9px;width:12px;height:12px;border-radius:50%;background:var(--red);box-shadow:0 0 0 4px #fff}
.dong-tg .m.vang:before{background:var(--gold)}
.dong-tg .m b{font-family:var(--mono);font-size:13px;color:var(--red);margin-right:8px}

/* memory loop */
.vong{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:16px 0;counter-reset:v}
.vong div{background:var(--mist);border-radius:50px;padding:14px 10px;text-align:center;font-size:14px;font-weight:600;position:relative}
.vong div:nth-child(2){background:var(--rose)}.vong div:nth-child(3){background:var(--gold-soft)}.vong div:nth-child(4){background:var(--ok-soft)}
@media(max-width:620px){.vong{grid-template-columns:1fr 1fr}}

.footer{background:#0d0d0d;color:#aaa;padding:40px 0;font-size:14px}
.footer img{height:34px;margin-bottom:10px}
.an-in{}
@media print{.top,.ngan,.nut-xong,.copy,.sim .sh button{display:none!important}.bai{box-shadow:none;break-inside:avoid-page}}
.vsc.sim{background:#1e1e1e;border-color:#333}.vsc.sim .chat{background:#1e1e1e}.vsc .msg-sep{background:#5c1a1a;border-color:#8a2a2a}
.nut-muc{white-space:nowrap}@media(max-width:520px){.top .ten{display:none}.top .wrap{gap:10px}.tien-do{font-size:12px}}