*{box-sizing:border-box;margin:0;padding:0}
:root{--b:#C8102E;--b2:#1A4FB8;--d:#0B1E4A;--l:#fdecee;--w:#fff}
body{font-family:"Be Vietnam Pro",system-ui,sans-serif;color:var(--d);background:#ffffff;min-height:100vh;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.web{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.13;animation:sway 14s ease-in-out infinite alternate}
@keyframes sway{to{transform:rotate(2deg) scale(1.03)}}
nav{position:relative;z-index:2;display:flex;justify-content:space-between;align-items:center;padding:24px 80px}
.logo{font-weight:800;font-size:24px;display:flex;align-items:center;gap:10px}.logo span{color:var(--b)}
.logo i{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--b),var(--b2));display:grid;place-items:center;color:#fff;font-style:normal;font-size:18px}
.menu a{margin-left:28px;font-weight:600;font-size:15px;opacity:.75;transition:.2s}.menu a:hover{opacity:1;color:var(--b)}
.btn{display:inline-flex;gap:8px;align-items:center;padding:14px 28px;border-radius:14px;font-weight:700;transition:.25s;border:2px solid var(--b)}
.btn.p{background:var(--b);color:#fff;box-shadow:0 10px 30px #C8102E44}.btn.o{color:var(--b);background:#fff}.btn:hover{transform:translateY(-3px)}
main{position:relative;z-index:1}
.up{opacity:0;transform:translateY(24px);animation:up .8s forwards}@keyframes up{to{opacity:1;transform:none}}
.d1{animation-delay:.1s}.d2{animation-delay:.2s}.d3{animation-delay:.3s}.d4{animation-delay:.4s}.d5{animation-delay:.5s}
/* home */
.home{min-height:calc(100vh - 90px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:30px 80px 60px}
.av{width:110px;height:110px;border-radius:50%;background:var(--l);border:4px solid #fff;box-shadow:0 0 0 3px var(--b2),0 12px 40px #C8102E33;display:grid;place-items:center;color:#8a97b8;font-size:12px;margin-bottom:18px}
.home h1{font-size:64px;font-weight:800;letter-spacing:-1px}.home h1 b{color:var(--b)}
.tag{font-size:19px;opacity:.7;margin:10px 0 40px}
.fields{display:grid;grid-template-columns:repeat(4,250px);gap:24px}
.f{background:#ffffffd9;backdrop-filter:blur(8px);border:1.5px solid #e3e6ef;border-radius:24px;padding:30px 22px;text-align:left;transition:.3s;position:relative;overflow:hidden}
.f:hover{transform:translateY(-8px);border-color:var(--b);box-shadow:0 20px 50px #C8102E2e}
.f .ic{width:56px;height:56px;border-radius:16px;background:var(--l);display:grid;place-items:center;font-size:28px;margin-bottom:18px}
.f h3{font-size:20px;margin-bottom:8px}.f p{font-size:14px;opacity:.65;line-height:1.55}.f .go{margin-top:18px;color:var(--b);font-weight:700;font-size:14px}
.f .st{position:absolute;top:18px;right:18px;font-size:11px;font-weight:700;padding:4px 10px;border-radius:20px;background:var(--l);color:var(--b)}
.cta{display:flex;gap:14px;margin-top:44px}.hint{margin-top:20px;font-size:12px;opacity:.45}
/* sub common */
.sub{padding:20px 80px 80px}.back{font-weight:700;color:var(--b);font-size:14px}
.sub h1{font-size:52px;font-weight:800;margin:14px 0 8px}.sub .lead{font-size:18px;opacity:.7;max-width:720px;margin-bottom:40px}
.ph{background:repeating-linear-gradient(45deg,#eef0f6,#eef0f6 10px,#f8f9fc 10px,#f8f9fc 20px);display:grid;place-items:center;color:#5b6b94;font-size:13px;font-weight:600}
.card{background:#fff;border:1.5px solid #e3e6ef;border-radius:20px;padding:24px;box-shadow:0 8px 30px #C8102E12}
.pill{display:inline-block;padding:5px 12px;border-radius:20px;background:var(--l);color:var(--b);font-size:12px;font-weight:700;margin:0 6px 6px 0}
/* design */
.tools{display:flex;gap:12px;margin-bottom:30px}.tool{padding:10px 18px;border-radius:12px;background:#fff;border:1.5px solid #e3e6ef;font-weight:700}
.board{background:#fff;border-radius:28px;padding:30px;background-image:radial-gradient(#d5dae8 1.2px,transparent 1.2px);background-size:22px 22px;border:1.5px solid #e3e6ef}
.gal{columns:3;gap:22px}.art{break-inside:avoid;margin-bottom:22px;border-radius:18px;overflow:hidden;background:#fff;box-shadow:0 10px 30px #C8102E1c;transition:.3s;position:relative}
.art:hover{transform:rotate(-1deg) scale(1.02)}.art .ph{border-radius:0}.art .cap{padding:14px 16px;font-weight:700}.art .cap small{display:block;font-weight:500;opacity:.55}
.art .lbl{position:absolute;top:-1px;left:16px;background:var(--b);color:#fff;font-size:11px;padding:3px 8px;border-radius:0 0 6px 6px}
/* data */
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:22px}.kpi strong{display:block;font-size:34px;color:var(--b)}.kpi span{font-size:13px;opacity:.6}
.dash{display:grid;grid-template-columns:1.6fr 1fr;gap:22px;margin-bottom:22px}
.bars{display:flex;align-items:flex-end;gap:16px;height:220px;padding-top:20px}.bars div{flex:1;border-radius:10px 10px 4px 4px;background:linear-gradient(var(--b2),var(--b));animation:grow 1.2s ease both;transform-origin:bottom}
@keyframes grow{from{transform:scaleY(0)}}.axis{display:flex;gap:16px;font-size:12px;opacity:.5;margin-top:8px}.axis span{flex:1;text-align:center}
.donut{width:190px;height:190px;border-radius:50%;margin:20px auto;background:conic-gradient(var(--b) 0 40%,var(--b2) 0 70%,#c7cfe3 0 100%);display:grid;place-items:center}.donut i{width:110px;height:110px;border-radius:50%;background:#fff;display:grid;place-items:center;font-style:normal;font-weight:800}
table{width:100%;border-collapse:collapse;font-size:14px}th{text-align:left;background:var(--l);color:var(--b);padding:12px}td{padding:12px;border-bottom:1px solid #eceef4}
h4{font-size:16px;margin-bottom:6px}
/* web */
.ide{display:grid;grid-template-columns:1fr 1fr;gap:22px}.win{border-radius:16px;overflow:hidden;background:#fff;border:1.5px solid #e3e6ef;box-shadow:0 20px 50px #C8102E1f}
.bar3{display:flex;gap:7px;align-items:center;padding:12px 16px;background:var(--l);font-size:13px;font-weight:600}.bar3 i{width:11px;height:11px;border-radius:50%;background:#c7cfe3}.bar3 i:first-child{background:var(--b)}
.code{background:#0B1E4A;color:#cfe2ff;font-family:"JetBrains Mono",monospace;font-size:14px;line-height:1.8;padding:22px;min-height:330px}.code .k{color:#ff6b7d}.code .s{color:#9fc0ff}.code .c{color:#5f7fb5}
.prompt{margin-top:22px;display:flex;gap:12px;align-items:center;background:#fff;border:2px solid var(--b);border-radius:18px;padding:14px 18px;box-shadow:0 10px 30px #C8102E26}
.prompt .ai{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--b),var(--b2));color:#fff;display:grid;place-items:center}
.prompt p{flex:1;font-size:16px}.caret{animation:bl 1s steps(1) infinite;color:var(--b)}@keyframes bl{50%{opacity:0}}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:30px}
/* security */
.sec{display:grid;grid-template-columns:1fr 1.4fr;gap:24px}.shield{display:grid;place-items:center;padding:40px}
.radar{width:260px;height:260px;border-radius:50%;border:2px solid #c7cfe3;position:relative;background:radial-gradient(circle,#fff 0 30%,#eaf3ff 30% 31%,#fff 31% 60%,#eaf3ff 60% 61%,#fff 61%)}
.radar:after{content:"";position:absolute;inset:0;border-radius:50%;background:conic-gradient(#C8102E55,transparent 25%);animation:spin 3s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
.radar b{position:absolute;inset:0;display:grid;place-items:center;font-size:70px;z-index:1}
.term{background:#0a0f1f;color:#bfe0ff;font-family:"JetBrains Mono",monospace;font-size:14px;line-height:1.9;padding:22px;border-radius:0 0 16px 16px;min-height:330px}.term .g{color:#ff5a6e}.term .ok{color:#7cf0c0}
.road{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:30px}.step{border-left:4px solid var(--b)}.step.dim{border-left-color:#d5dae8;opacity:.7}
footer{position:relative;z-index:1;text-align:center;padding:30px;font-size:13px;opacity:.5}
.fields{grid-template-columns:repeat(4,270px)}
.f{text-align:center;padding:30px 22px 26px}.f .big{width:160px;height:160px;margin:6px auto 18px;display:block;color:var(--b);transition:.35s}
.f:hover .big{transform:scale(1.08) rotate(-3deg);color:#0B3D91}
.story{position:relative;padding:110px 80px 120px;display:grid;grid-template-columns:1fr 1.25fr;gap:70px;align-items:center;max-width:1280px;margin:0 auto}
.story .kick{color:var(--b);font-weight:800;letter-spacing:3px;font-size:13px}.story h2{font-size:48px;font-weight:800;line-height:1.15;margin:12px 0 26px}.story h2 b{color:var(--b)}
.quote{position:relative;background:linear-gradient(135deg,var(--b),var(--b2));color:#fff;border-radius:28px;padding:40px 36px;font-size:24px;font-weight:700;line-height:1.5;box-shadow:0 20px 50px #C8102E40;overflow:hidden}
.quote:before{content:"“";position:absolute;top:-30px;right:18px;font-size:180px;opacity:.25}.quote small{display:block;margin-top:16px;font-size:14px;font-weight:500;opacity:.85}
.quote svg{position:absolute;left:-40px;bottom:-40px;width:200px;opacity:.18}
.story .txt p{font-size:17px;line-height:1.85;margin-bottom:16px;opacity:.85}
.reveal{opacity:0;transform:translateY(40px);transition:1s}.reveal.on{opacity:1;transform:none}

:root{--b:#C8102E;--b2:#1A4FB8;--blue:#0B3D91;--d:#0B1E4A}
h1,h2,h3,h4{text-wrap:balance}p,li,td,small{text-wrap:pretty}
.web{opacity:.09}
/* home mask hero */
.home{position:relative;color:#fff;background:radial-gradient(ellipse at 50% 40%,#d81f3a 0,#B11313 55%,#7d0b12 100%);overflow:hidden;min-height:calc(100vh - 90px)}
.home>*{position:relative;z-index:1}.home .mask{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.32;pointer-events:none}
.home .mask .eye{animation:blink 7s infinite;transform-origin:center;transform-box:fill-box}@keyframes blink{0%,92%,100%{transform:scaleY(1)}95%{transform:scaleY(.08)}}
.home .mask .glow{animation:glow 4s ease-in-out infinite alternate}@keyframes glow{to{opacity:.6}}
.home h1 b{color:#fff;text-shadow:0 0 24px #0B3D91}.home .tag{opacity:.9}.home .hint{opacity:.7}
.av{background:#0B3D91;color:#c9d6f5;box-shadow:0 0 0 3px #0B1E4A,0 12px 40px #0006}
.f{background:#fff;color:var(--d);border:2px solid #0B1E4A;box-shadow:0 10px 30px #0004}.f:hover{border-color:#0B3D91;box-shadow:0 24px 50px #0006}
.f .big{color:#0B3D91}.f:hover .big{color:#C8102E}.f .st{background:#0B3D91;color:#fff}
nav{background:#0B1E4A;color:#fff;padding:18px 80px}.logo span{color:#ff4a5f}.logo i{background:linear-gradient(135deg,#C8102E,#0B3D91)}
/* web-styled buttons */
.webbg{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' fill='none' stroke='%23ffffff' stroke-opacity='.28' stroke-width='1'%3E%3Cpath d='M0 0L60 60M60 0L0 60M30 0V60M0 30H60'/%3E%3Ccircle cx='30' cy='30' r='10'/%3E%3Ccircle cx='30' cy='30' r='22'/%3E%3C/svg%3E")}
.btn{position:relative;border:2px solid #0B1E4A;transform-origin:50% -40px;overflow:visible}
.btn.p{background:#C8102E url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' fill='none' stroke='%23ffffff' stroke-opacity='.25' stroke-width='1'%3E%3Cpath d='M0 0L60 60M60 0L0 60M30 0V60M0 30H60'/%3E%3Ccircle cx='30' cy='30' r='10'/%3E%3Ccircle cx='30' cy='30' r='22'/%3E%3C/svg%3E");color:#fff;box-shadow:0 8px 0 #0B1E4A,0 14px 30px #0005}
.btn.o{background:#0B3D91 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' fill='none' stroke='%23ffffff' stroke-opacity='.2' stroke-width='1'%3E%3Cpath d='M0 0L60 60M60 0L0 60M30 0V60M0 30H60'/%3E%3Ccircle cx='30' cy='30' r='10'/%3E%3Ccircle cx='30' cy='30' r='22'/%3E%3C/svg%3E");color:#fff;box-shadow:0 8px 0 #0B1E4A,0 14px 30px #0004}
.btn:before{content:"";position:absolute;left:50%;bottom:100%;width:2px;height:0;background:linear-gradient(#fff0,#fff);transition:height .35s}
.btn:after{content:"";position:absolute;top:-6px;right:-6px;width:26px;height:26px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 26 26' fill='none' stroke='%23fff' stroke-width='1.2'%3E%3Cpath d='M26 0L0 26M26 0V26M26 0H0M26 9Q18 8 17 0M26 18Q10 16 9 0'/%3E%3C/svg%3E") no-repeat;opacity:.85}
.btn:hover{transform:none;animation:swing .9s ease-in-out}.btn:hover:before{height:60px}
@keyframes swing{0%{transform:rotate(0)}25%{transform:rotate(4deg) translateY(-4px)}50%{transform:rotate(-3deg)}75%{transform:rotate(1.5deg)}100%{transform:rotate(0)}}
.btn:active{transform:translateY(4px);box-shadow:0 3px 0 #0B1E4A}
.menu a{position:relative;color:#fff;opacity:.85;padding:6px 2px}.menu a:hover{color:#ff4a5f;opacity:1}
.menu a:after,.go:after,.back:after,.lk a:after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:repeating-linear-gradient(90deg,currentColor 0 6px,transparent 6px 9px);transition:width .4s}
.menu a:hover:after,.f:hover .go:after,.back:hover:after{width:100%}
.go,.back{position:relative;display:inline-block;color:#C8102E}.go:before{content:"🕸 ";font-size:12px;opacity:0;transition:.3s}.f:hover .go:before{opacity:1}
/* story */
.story{max-width:none;background:#0B1E4A;color:#fff}.story .txt p{opacity:.92}.story h2 b{color:#ff4a5f}
.quote{text-wrap:pretty;background:linear-gradient(135deg,#C8102E,#8d0a1c)}
.sub h1 .ac{color:#C8102E}
footer{background:#0a0f1f;color:#fff;opacity:1}
@media(max-width:600px){nav{padding:14px 18px;flex-wrap:wrap;gap:8px}.menu a{margin-left:0;margin-right:14px;font-size:13px}.home{padding:30px 18px 50px}.home h1{font-size:36px}.fields{grid-template-columns:1fr 1fr;gap:12px}.f{padding:18px 10px}.f .big{width:80px;height:80px}.f p{display:none}.f h3{font-size:16px}.cta{flex-wrap:wrap;justify-content:center}
.story{grid-template-columns:1fr;padding:60px 20px;gap:30px}.story h2{font-size:32px}.quote{font-size:19px;padding:28px 22px}
.sub{padding:16px 18px 50px}.sub h1{font-size:34px}.kpis,.dash,.ide,.sec,.grid3,.road{grid-template-columns:1fr}.gal{columns:1}.fields,.kpis{width:100%}table{font-size:12px}.f .st{position:static;display:inline-block;margin-bottom:6px}}
.logo img{display:block;height:44px;width:auto;transition:.3s}.logo:hover img{transform:rotate(-3deg) scale(1.04)}@media(max-width:600px){.logo img{height:34px}}
.gal2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.art2{margin:0;position:relative;background:#fff;border-radius:18px;overflow:hidden;border:2px solid #0B1E4A;box-shadow:6px 6px 0 #0B1E4A;cursor:zoom-in;transition:.3s}
.art2:hover{transform:rotate(-1deg) translateY(-4px);box-shadow:10px 10px 0 #C8102E}.art2 img{display:block;width:100%;height:auto;aspect-ratio:auto;object-fit:contain;background:#0B1E4A}
.art2 figcaption{padding:16px 18px}.art2 b{display:block;font-size:18px}.art2 small{display:block;opacity:.6;margin:4px 0 10px}.art2 .lbl{z-index:1}
.art2.soon{cursor:default;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px;background:#0B1E4A;color:#fff;border-style:dashed}.art2.soon div{font-size:40px;color:#C8102E}.art2.soon small{max-width:280px}
.lb{position:fixed;inset:0;background:#0a0f1fe6;z-index:50;display:none;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:30px}.lb.on{display:flex;animation:up .3s forwards}
.lb img{max-width:min(90vw,1200px);max-height:80vh;width:auto;height:auto;object-fit:contain;border-radius:12px;box-shadow:0 20px 60px #000}.lb p{color:#fff;font-weight:700}.lb button{position:absolute;top:20px;right:28px;font-size:40px;background:none;border:0;color:#fff;cursor:pointer}
.soonp{background:#0B1E4A;color:#fff}
.contact{text-align:center;padding:90px 20px;background:#fff}.contact .kick{color:#C8102E;font-weight:800;letter-spacing:3px;font-size:13px}.contact h2{font-size:42px;margin:10px 0 14px}.contact p{opacity:.7;margin-bottom:28px}.contact .cta{justify-content:center;flex-wrap:wrap;margin-top:0}
footer a{text-decoration:underline}
@media(max-width:600px){.gal2{grid-template-columns:1fr}.contact h2{font-size:30px}}
.art2 .lbl{position:absolute;top:0;left:16px;background:#C8102E;color:#fff;font-size:11px;padding:3px 8px;border-radius:0 0 6px 6px}
.cinfo{list-style:none;display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:center;margin:22px 0 0;padding:0}
.cinfo li{white-space:nowrap}.cinfo a{color:inherit;text-decoration:none;border-bottom:1px dashed currentColor}
footer a{color:inherit}
.av{overflow:hidden;padding:0}.av img{width:100%;height:100%;object-fit:cover;object-position:50% 40%;border-radius:50%;display:block}
/* ===== REDESIGN 2026 — Editorial chuyên nghiệp ===== */
:root{--ink:#0B1E4A;--mut:#4a5678;--line:#e2e6f0;--bg:#f7f8fb;--red:#C8102E;--blue:#1A4FB8}
html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--ink);color:#fff;padding:12px 16px;border-radius:10px;font-weight:700}.skip:focus{top:12px}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:6px}
svg.i{width:1.1em;height:1.1em;flex:none;vertical-align:-.18em;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.web{opacity:.05}.home .mask{display:none}
nav{position:sticky;top:0;z-index:20;background:rgba(11,30,74,.96);backdrop-filter:blur(10px);padding:10px clamp(18px,5vw,80px);box-shadow:0 1px 0 #ffffff14}
.menu{display:flex;gap:4px;flex-wrap:wrap}.menu a{margin:0;padding:10px 12px;min-height:44px;display:inline-flex;align-items:center;border-radius:10px;font-size:14.5px;opacity:.9}.menu a:hover{background:#ffffff14;color:#fff}.menu a:after{display:none}
.btn{min-height:48px;padding:12px 22px;border-radius:12px;border-width:1.5px}.btn.p{box-shadow:0 6px 18px #C8102E33}.btn.o{border-color:#cdd3e3;color:var(--ink)}.btn.o:hover{border-color:var(--ink)}.btn:hover{transform:translateY(-2px)}
/* hero */
.home{min-height:auto;padding:clamp(48px,8vw,96px) clamp(18px,5vw,80px) 72px;background:radial-gradient(900px 400px at 50% -10%,#1A4FB81a,transparent 70%),linear-gradient(#fff,var(--bg));border-bottom:1px solid var(--line)}
.av{width:120px;height:120px;box-shadow:0 0 0 1px var(--line),0 14px 34px #0B1E4A26;border:4px solid #fff}
.home h1{font-size:clamp(34px,5.2vw,60px);line-height:1.12;letter-spacing:-.02em;max-width:900px;text-wrap:balance}
.tag{font-size:clamp(16px,1.6vw,19px);color:var(--mut);opacity:1;margin:14px 0 44px;max-width:640px}
.fields{grid-template-columns:repeat(4,minmax(0,260px));gap:20px;width:100%;justify-content:center}
.f{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 22px;box-shadow:0 1px 2px #0B1E4A0d;display:flex;flex-direction:column}
.f:before{content:"";position:absolute;left:0;top:0;right:0;height:3px;background:linear-gradient(90deg,var(--red),var(--blue));transform:scaleX(0);transform-origin:left;transition:.35s}
.f:hover{transform:translateY(-4px);border-color:#cfd6e8;box-shadow:0 18px 40px #0B1E4A1f}.f:hover:before{transform:scaleX(1)}
.f .big{width:44px;height:44px;color:var(--red);margin-bottom:16px}.f p{color:var(--mut);opacity:1}.f .go{margin-top:auto;padding-top:16px}.go:before{content:none!important}
.f .st{background:#eef2fb;color:var(--blue)}
/* story */
.story{padding:clamp(56px,8vw,100px) clamp(18px,6vw,100px)}.story .kick,.contact .kick,.kick{letter-spacing:.18em;font-size:12.5px;font-weight:800}
.quote{border-radius:20px;line-height:1.45}
.story .txt p{line-height:1.75;margin-bottom:14px;max-width:68ch}
/* contact */
.contact{background:#fff;border-top:1px solid var(--line)}.contact p{color:var(--mut);opacity:1}
.cinfo li{display:inline-flex;align-items:center;gap:8px;min-height:44px}.cinfo svg.i{color:var(--red)}
footer{padding:28px 20px;text-align:center;font-size:14px;line-height:1.8;background:#0a0f1f}
/* sub pages */
.sub{max-width:1240px;margin:0 auto;padding:28px clamp(18px,5vw,48px) 80px}.back{display:inline-flex;align-items:center;min-height:44px}
.sub h1{font-size:clamp(32px,4.4vw,52px);letter-spacing:-.02em;line-height:1.15}.sub .lead{color:var(--mut);opacity:1}
.card{border:1px solid var(--line);border-radius:18px;box-shadow:0 1px 3px #0B1E4A0f}
.art2{border:1px solid var(--line);box-shadow:0 8px 24px #0B1E4A14}.art2:hover{transform:translateY(-4px);box-shadow:0 18px 40px #0B1E4A26}
.tools{flex-wrap:wrap}.tool{border:1px solid var(--line)}
img{max-width:100%;height:auto}
.lb button{min-width:48px;min-height:48px}
@media(max-width:1100px){.fields{grid-template-columns:repeat(2,minmax(0,1fr));max-width:640px}}
@media(max-width:600px){nav{position:static}.menu{width:100%;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin:0 -6px}.menu a{white-space:nowrap;padding:10px 10px}
.fields{grid-template-columns:1fr 1fr}.f{padding:18px 14px}.f .big{width:36px;height:36px}.cta{width:100%}.cta .btn{flex:1 1 100%;justify-content:center}
.cinfo{flex-direction:column;align-items:center;gap:0}.sub *{min-width:0}pre,.code{white-space:pre-wrap;word-break:break-word}.tools .tool{flex:1 1 40%}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.up{opacity:1;transform:none}.reveal{opacity:1!important;transform:none!important}}
.home h1,.home h1 *{color:var(--ink);text-shadow:none}.home h1 b{color:var(--red)!important}
.btn{border:1.5px solid var(--red);transform-origin:center}.btn:before,.btn:after{content:none!important}
.btn.p{background:var(--red);color:#fff;box-shadow:0 6px 18px #C8102E33}.btn.p:hover{background:#a50d26}
.btn.o{background:#fff;color:var(--ink);border-color:#cdd3e3;box-shadow:none}
.btn:hover{animation:none;transform:translateY(-2px)}.btn:active{transform:translateY(1px);box-shadow:none}
@media(max-width:600px){.home h1{font-size:34px}}
.home h1 b{text-shadow:none!important}
/* ===== v2: giữ mặt nạ nhện + nút đu tơ, menu ☰ trên điện thoại ===== */
.home{position:relative;overflow:hidden}.home>*:not(.mask){position:relative;z-index:1}
.home .mask{display:block!important;position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.14;pointer-events:none}
.home .mask .glow{display:none}
.btn{transform-origin:50% -40px;overflow:visible;position:relative}
.btn:before{content:""!important;position:absolute;left:50%;bottom:100%;width:1.5px;height:0;background:linear-gradient(#0B1E4A00,#0B1E4A99);transition:height .35s;pointer-events:none}
.btn:hover{transform:none;animation:swing .9s ease-in-out}.btn:hover:before{height:40px}
.btn:active{transform:translateY(1px)}
.burger{display:none;width:44px;height:44px;margin-left:auto;align-items:center;justify-content:center;background:transparent;color:#fff;border:1.5px solid #ffffff40;border-radius:12px;cursor:pointer;padding:0}
.burger:focus-visible{outline:3px solid #ffbf00;outline-offset:2px}
.burger path{transition:transform .2s,opacity .2s;transform-origin:center;transform-box:fill-box}
nav.open .burger .b1{transform:translateY(5px) rotate(45deg)}nav.open .burger .b2{opacity:0}nav.open .burger .b3{transform:translateY(-5px) rotate(-45deg)}
@media(max-width:860px){nav{position:sticky;top:0;display:flex;flex-wrap:nowrap;align-items:center;justify-content:space-between}
 .burger{display:inline-flex}
 .menu{display:none!important;position:absolute;left:0;right:0;top:100%;margin:0!important;width:auto!important;flex-direction:column;gap:2px;padding:8px 14px 14px;background:#0B1E4A;box-shadow:0 14px 30px #0B1E4A40;overflow:visible!important}
 nav.open .menu{display:flex!important}
 .menu a{width:100%;min-height:48px;padding:12px 14px!important;font-size:16px!important;white-space:normal!important;opacity:1}
}
@media(prefers-reduced-motion:reduce){.btn:hover{animation:none!important}.btn:hover:before{height:0}.home .mask .eye{animation:none!important}.burger path{transition:none}}