/* ===== Nền sáng (xanh Sông Đà 9) + thành phần mạch mới · 12/10/2026 ===== */
/* nhãn bài toán / lời giải, đặt trên dải header cạnh logo */
.f-tags{position:absolute;right:240px;top:42px;z-index:31;display:flex;gap:10px;align-items:center}
.slide.z:not(.z-free)>.f-tags{zoom:.7463}
.f-tags .f-thr{position:static!important;padding:7px 14px;font-size:16px}
.f-tags .bt{display:inline-flex;align-items:center;padding:7px 16px;border-radius:999px;font-size:15px;font-weight:700;letter-spacing:.06em;white-space:nowrap}
.f-tags .bt.q{background:#FCD34D;color:#3B2A00}
.f-tags .bt.a{background:#fff;color:#1446B0}
/* bài toán 3 */
.f-bt3{position:absolute;left:120px;right:120px;top:360px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.f-bt3 .f-card{padding:36px 34px}
.f-bt3 .f-card small{font-size:16px}
.f-bt3 .f-card h3{font-size:34px;margin-bottom:14px}
.f-bt3 .f-card p{font-size:22px}
.f-bt3n{position:absolute;left:120px;right:120px;top:720px}
/* kết luận CASAN */
.ck-lv{position:absolute!important;left:120px;right:120px;top:232px;margin:0!important}
.ck-lv .lv{padding:12px 16px!important}
.ck-lv .lv h3{font-size:22px!important;margin:2px 0 0!important}
.ck-lv .lv p{font-size:13px!important;margin:2px 0 0!important}
.ck{position:absolute;left:120px;right:120px;top:368px;display:grid;gap:10px}
.ck-h,.ck-r{display:grid;grid-template-columns:330px 1fr 380px 380px;gap:14px;align-items:stretch}
.ck-h span{font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:#D6ECFF;padding:0 18px}
.ck-h span i{display:block;font-style:normal;font-weight:400;letter-spacing:0;text-transform:none;font-size:15px;color:rgba(255,255,255,.85);margin-top:2px}
.ck-h .s,.ck-h .a{padding:10px 18px;border-radius:12px}
.ck-h .s{background:rgba(94,234,212,.22)}.ck-h .a{background:rgba(196,181,253,.25)}
.ck-r>*{margin:0;padding:16px 18px;border-radius:14px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);font-size:19px;line-height:1.4;color:#fff;display:flex;align-items:center}
.ck-r b{font-size:20px;gap:12px}
.ck-r b em{font-style:normal;flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#FCD34D;color:#3B2A00;font-size:18px}
.ck-r .s{background:rgba(94,234,212,.16);border-color:rgba(153,246,228,.5)}
.ck-r .a{background:rgba(196,181,253,.18);border-color:rgba(221,214,254,.55)}
.ck-r i{font-style:normal;color:rgba(255,255,255,.8);margin-left:6px}
.ck-n{position:absolute;left:120px;right:120px;top:820px}
.ck-lv{height:auto!important;align-items:stretch!important;top:226px!important}
.ck-lv .lv{height:auto!important;border-radius:12px!important}
.slide.z:not(.z-free)>.tk-foot{zoom:.7463}
.f-bt3{top:330px}
.f-bt3 .f-card{padding:48px 42px;min-height:300px}
.f-bt3 .f-card small{font-size:18px;margin-bottom:16px}
.f-bt3 .f-card h3{font-size:40px;margin-bottom:18px}
.f-bt3 .f-card p{font-size:24px;line-height:1.5}
.f-bt3n{top:740px}
/* ===== v22 · thang ứng dụng AI ===== */
.f-lad{position:absolute;left:120px;right:120px;top:330px;bottom:120px}
.f-lad .st{position:absolute;bottom:60px;width:318px;border-radius:18px;padding:22px 22px 18px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.24);display:flex;flex-direction:column}
.f-lad .st::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;border-radius:18px 18px 0 0;background:var(--c)}
.f-lad .s0{left:0;height:330px;--c:#93C5FD;background:rgba(255,255,255,.06);border-style:dashed}
.f-lad .s1{left:340px;height:385px;--c:#5EEAD4}
.f-lad .s2{left:680px;height:440px;--c:#5EEAD4}
.f-lad .s3{left:1020px;height:495px;--c:#C4B5FD}
.f-lad .s4{left:1360px;height:550px;--c:#C4B5FD;background:rgba(255,255,255,.16)}
.f-lad .st small{font-size:14px;font-weight:800;letter-spacing:.2em;color:var(--c)}
.f-lad .st h3{font-size:27px;line-height:1.2;margin:6px 0 10px;color:#fff}
.f-lad .st p{font-size:18px;line-height:1.42;color:rgba(255,255,255,.9);margin:0;font-weight:300}
.f-lad .st p.vd{margin-top:12px;padding-top:12px;border-top:1px solid rgba(255,255,255,.18);font-size:17px}
.f-lad .st p.vd b{display:block;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:#FCD34D;font-weight:700;margin-bottom:3px}
.f-lad .st .ft{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px;padding-top:12px}
.f-lad .st .ft span{font-size:14px;font-weight:600;color:#D6ECFF}
.f-lad .st .ft i{font-style:normal;font-size:14px;font-weight:800;padding:4px 10px;border-radius:999px;background:var(--c);color:#0B1B33;white-space:nowrap}
.f-lad .nv{position:absolute;right:0;top:-38px;width:318px;text-align:center;font-size:17px;color:#fff;padding:9px 12px;border-radius:999px;border:1px dashed rgba(255,255,255,.55)}
.f-lad .nv b{font-size:12px;letter-spacing:.18em;color:#FCD34D;margin-right:8px}
.f-lad .ax{position:absolute;left:0;right:0;bottom:0;height:34px;display:flex;justify-content:space-between;align-items:center;font-size:15px;font-weight:600;letter-spacing:.06em;color:#D6ECFF;border-top:2px solid rgba(255,255,255,.35)}
.f-lad .ax::after{content:"";position:absolute;right:-2px;top:-8px;border:7px solid transparent;border-left:12px solid rgba(255,255,255,.6)}
/* slide mock dạng nl-app trên nền xanh */
[data-bg="e"] .slide.s-nlapp.f-nl{background:var(--stage-bg)}
.s-nlapp.f-nl .nl-eye{color:#FCD34D}
.s-nlapp.f-nl .nl-top{color:#fff}
/* nấc 4 */
.f-n4{position:absolute;left:120px;right:120px;top:300px;display:grid;grid-template-columns:1fr 640px;gap:40px}
.f-n4 .cap{font-size:14px;font-weight:700;letter-spacing:.18em;color:#D6ECFF;margin-bottom:14px}
.f-n4 .r{display:flex;align-items:center;gap:16px;padding:14px 18px;border-radius:14px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.24);margin-bottom:12px;position:relative}
.f-n4 .ch>.r:not(:last-of-type)::after{content:"";position:absolute;left:36px;bottom:-13px;height:12px;border-left:2px dashed rgba(255,255,255,.5)}
.f-n4 .r em{flex:none;font-style:normal;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:#C4B5FD;color:#1E1B4B;font-weight:800;font-size:16px}
.f-n4 .r p{margin:0;flex:1;font-size:20px;line-height:1.35;color:#fff;font-weight:300}
.f-n4 .r p b{font-weight:700}
.f-n4 .r .sy{flex:none;font-size:14px;font-weight:700;padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.18);color:#fff;white-space:nowrap}
.f-n4 .sp{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:4px}
.f-n4 .sp .r{flex-wrap:wrap;margin:0;align-items:flex-start}
.f-n4 .sp .r p{flex-basis:calc(100% - 60px)}
.f-n4 .sp .r .sy{margin-left:56px}
.f-n4 .r.ok{border-color:#99F6E4;background:rgba(94,234,212,.16)}.f-n4 .r.ok em{background:#5EEAD4}
.f-n4 .r.ex{border-color:#FCD34D;background:rgba(252,211,77,.14)}.f-n4 .r.ex em{background:#FCD34D}
.f-n4 .rt .f-shot img{width:100%;display:block;border-radius:12px}
.f-n4 .rt .sc{font-size:16px;color:#D6ECFF;margin:10px 0 14px}
.f-n4 .kc{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.f-n4 .kc span{font-size:15px;line-height:1.35;color:rgba(255,255,255,.9);padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22)}
.f-n4 .kc b{display:block;font-size:17px;color:#fff;margin-bottom:2px}
.n4n{position:absolute;left:120px;right:120px;top:840px}
/* kết luận CASAN v22 */
.ck2{position:absolute;left:120px;right:120px;top:366px;display:grid;gap:10px}
.ck2 .h,.ck2 .r{display:grid;grid-template-columns:380px 1fr 1fr 150px 190px;gap:12px;align-items:stretch}
.ck2 .h span{font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:#D6ECFF;padding:0 18px}
.ck2 .r>*{margin:0;padding:15px 18px;border-radius:14px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);font-size:19px;line-height:1.38;color:#fff;display:flex;align-items:center;gap:12px}
.ck2 .r b{font-size:21px}
.ck2 .r b em{font-style:normal;flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-size:17px;color:#0B1B33}
.ck2 .r.s b em{background:#5EEAD4}.ck2 .r.a b em{background:#C4B5FD}
.ck2 .r .l{justify-content:center;font-weight:700}
.ck2 .r .c{justify-content:center;font-weight:700}
.ck2 .r.s .c{background:rgba(94,234,212,.22);border-color:rgba(153,246,228,.6)}
.ck2 .r.a .c{background:rgba(196,181,253,.25);border-color:rgba(221,214,254,.6)}
.f-lad .nv{top:-28px;width:auto;white-space:nowrap;padding:7px 18px;font-size:16px}
.s-nlapp.f-nl .nl-steps li,.s-nlapp.f-nl .nl-steps li.on{color:rgba(255,255,255,.86)}
.s-nlapp.f-nl .nl-steps li.on:not(:has(~ li.on)){color:rgba(255,255,255,.86);border-left-color:transparent;background:none}
.s-nlapp.f-nl .nl-steps li.on:not(:has(~ li.on))::before{color:inherit}
.s-nlapp.f-nl .nl-steps li.cur{color:#fff!important;border-left-color:#FCD34D!important;background:linear-gradient(90deg,rgba(255,255,255,.16),transparent)!important}
.s-nlapp.f-nl .nl-steps li.cur::before{color:#FCD34D!important}
.s-nlapp.f-nl .nl-steps li.on:not(:has(~ li.on)){color:rgba(255,255,255,.88)!important;border-left-color:transparent!important;background:none!important}
.s-nlapp.f-nl .nl-steps li.on:not(:has(~ li.on))::before{color:rgba(220,235,255,.8)!important}
.s-nlapp.f-nl .nl-steps li.cur{color:#fff!important;border-left-color:#FCD34D!important;background:linear-gradient(90deg,rgba(255,255,255,.16),transparent)!important}
.s-nlapp.f-nl .nl-steps li.cur::before{color:#FCD34D!important}
.s-nlapp.f-nl .nl-l{width:440px}
.s-nlapp.f-nl .nl-steps li{font-size:19px}
/* nấc 3: đưa "giao việc trực tiếp" và "theo lịch" lên trước, "trong quy trình" xuống cuối */
.f-3x.n3 .c2{order:1}.f-3x.n3 .c3{order:2}.f-3x.n3 .c1{order:3}
.f-3x.n3 .m2{transform:translate(17px,37px) scale(.1597)}
.f-3x.n3 .m3{transform:translate(17px,272px) scale(.1597)}
.f-3x.n3 .m1{transform:translate(17px,507px) scale(.1597)}
.f-3x.n3[data-big="1"] .m1,.f-3x.n3[data-big="2"] .m2,.f-3x.n3[data-big="3"] .m3{transform:translate(600px,3px) scale(.75);z-index:7}
/* v24 · model và kiểm soát */
.f-mk{position:absolute;left:120px;right:120px;top:290px;display:grid;grid-template-columns:560px 1fr;gap:40px}
.f-mk .f-shot img{width:100%;display:block;border-radius:12px;max-height:520px;object-fit:cover;object-position:top}
.f-mk .sc{font-size:16px;color:#D6ECFF;margin:10px 0 0}
.f-mk .cl{display:grid;gap:16px}
.f-mk .f-card{padding:22px 28px}
.f-mk .f-card h3{font-size:26px;margin:0 0 6px}
.f-mk .f-card p{font-size:19px}
.mkn{position:absolute;left:120px;right:120px;top:880px}
/* bắt đầu từ đâu */
.bd3 .f-card p.vd{margin-top:16px;padding-top:14px;border-top:1px solid rgba(255,255,255,.2);font-size:19px}
.bd3 .f-card p.vd b{display:block;font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:#FCD34D;margin-bottom:4px}
/* v25 · 4 thẻ nền tảng */
.f-mk .cl.c4{grid-template-columns:1fr 1fr;gap:14px}
.f-mk .cl.c4 .f-card{padding:20px 24px}
.f-mk .cl.c4 .f-card h3{font-size:23px}
.f-mk .cl.c4 .f-card p{font-size:17.5px;line-height:1.45}
/* v27 · thanh tiến trình 4 bước + slide tổng quan */
.f-tags.f-stp{right:230px;top:40px}
.f-step{display:flex;gap:6px;padding:5px;border-radius:999px;background:rgba(8,24,72,.35);border:1px solid rgba(255,255,255,.22)}
.f-step span{display:inline-flex;align-items:center;gap:7px;padding:5px 13px 5px 6px;border-radius:999px;font-size:14px;font-weight:600;color:rgba(255,255,255,.6);white-space:nowrap}
.f-step span i{font-style:normal;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:800;background:rgba(255,255,255,.14);color:#fff}
.f-step span.done{color:rgba(255,255,255,.82)}.f-step span.done i{background:rgba(94,234,212,.45)}
.f-step span.on{background:#fff;color:#1446B0}.f-step span.on i{background:#1446B0;color:#fff}
.s-nlapp.f-nl .nl-top .tag{display:none}
.s-nlapp.f-nl .nl-top{right:830px;font-size:19px}
.s-nlapp.f-nl .nl-top>span:nth-child(2){overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.f-4b{position:absolute;left:120px;right:120px;top:350px;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.f-4b .b{position:relative;display:flex;flex-direction:column;min-height:400px;padding:30px 28px 26px;border-radius:20px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.24);cursor:pointer;text-decoration:none;color:#fff;transition:background .3s,border-color .3s}
.f-4b .b:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.5)}
.f-4b .b::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;border-radius:20px 20px 0 0;background:var(--c)}
.f-4b .b em{font-style:normal;font-size:56px;font-weight:800;line-height:1;color:var(--c);opacity:.9}
.f-4b .b small{margin-top:14px;font-size:13px;font-weight:800;letter-spacing:.2em;color:var(--c)}
.f-4b .b h3{font-size:27px;line-height:1.25;margin:8px 0 12px}
.f-4b .b p{font-size:19px;line-height:1.45;color:rgba(255,255,255,.88);font-weight:300;margin:0}
.f-4b .b .pg{margin-top:auto;padding-top:16px;font-size:14px;font-weight:600;letter-spacing:.08em;color:#D6ECFF}
.f-4b .b:not(:last-child)::after{content:"";position:absolute;right:-17px;top:62px;border:7px solid transparent;border-left:10px solid rgba(255,255,255,.55)}
.b4n{position:absolute;left:120px;right:120px;top:800px}