/* ===== TOKEN =====
   Một màu nhấn duy nhất: xanh dương. Còn lại là xám xanh nhạt và trắng.
   Bo góc nhỏ (4px, vỏ ngoài 6px). Khoảng cách vừa phải, nhiều khoảng thở. */
:root{--mk-body:#3155e9;--mk-wave:#9ec8ea;--mk-dot:#3155e9;
  color-scheme:light;
  --bg:#F3F5F9; --surface:#FFFFFF; --soft:#EAEEF6; --line:#E2E7F0; --line2:#CCD4E4;
  --ink:#0F1730; --mut:#55607E; --mut2:#626C8B;
  --blue:#2F54EB; --blue-d:#2442C7; --sky:#3A9BF2; --cyan:#12B5D0; --indigo:#4458D6; --teal:#0FAE9A; --amber:#F2A93B; --blue-s:color-mix(in srgb,var(--blue) 8%,var(--surface)); --blue-m:color-mix(in srgb,var(--blue) 16%,var(--surface));
  --err:#C62828; --r:4px; --r2:6px;
  --sh:0 1px 2px rgb(15 23 48/.04),0 18px 36px -22px rgb(47 84 235/.28);
  --font:'Be Vietnam Pro',system-ui,sans-serif;
  --ease:cubic-bezier(.32,.72,0,1);
}
:root[data-theme="dark"]{--mk-body:#cfd9ff;--mk-wave:#9ec8ea;--mk-dot:#7f9bff;
  color-scheme:dark;
  --bg:#0C1226; --surface:#131A33; --soft:#1A2244; --line:#252E55; --line2:#35407A;
  --ink:#EEF1FF; --mut:#A5AED0; --mut2:#7F89B0; --err:#FF8A80;
  --sh:0 1px 2px rgb(0 0 0/.3),0 18px 36px -22px rgb(0 0 0/.7);
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{background:var(--bg);color:var(--ink);font:400 15.5px/1.65 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;z-index:60;pointer-events:none;opacity:.035;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{font-weight:700;letter-spacing:-.025em;line-height:1.14;text-wrap:balance}
p{color:var(--mut);text-wrap:pretty}
ul,ol{list-style:none;padding:0}
.wrap{width:min(1180px,100% - 40px);margin-inline:auto}
section{padding-block:clamp(52px,7vw,92px)}
.ph{font-size:1.2em;line-height:1;vertical-align:-.18em}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.skip{position:absolute;left:-999px;top:6px;background:var(--blue);color:#fff;padding:8px 12px;z-index:300;border-radius:var(--r);font-weight:600}
.skip:focus{left:8px}
.it{width:36px;height:36px;flex:none;display:grid;place-items:center;border-radius:var(--r);background:color-mix(in srgb,var(--c,var(--blue)) 11%,var(--surface));color:var(--c,var(--blue));font-size:19px;box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--c,var(--blue)) 24%,transparent);transition:transform .5s var(--ease),background-color .3s,color .3s}

/* Nút: viền kép nhẹ, mũi tên nằm trong ô riêng */
.btn{display:inline-flex;align-items:center;gap:10px;padding:10px 14px 10px 18px;border-radius:var(--r);font-weight:600;font-size:14.5px;line-height:1.2;white-space:nowrap;border:1px solid transparent;cursor:pointer;transition:transform .45s var(--ease),box-shadow .45s var(--ease),background-color .25s,border-color .25s,color .25s}
.btn .arr{width:26px;height:26px;display:grid;place-items:center;border-radius:3px;background:rgb(255 255 255/.16);font-size:15px;transition:transform .45s var(--ease),background-color .3s}
.btn:hover .arr{transform:translate(2px,-1px) scale(1.06)}
.btn-p{background:var(--blue);color:#fff;box-shadow:0 10px 22px -12px rgb(47 84 235/.85),inset 0 1px 0 rgb(255 255 255/.18)}
.btn-p:hover{background:var(--blue-d);transform:translateY(-2px)}
.btn-g{background:var(--surface);border-color:var(--line2);color:var(--ink);padding:10px 18px}
.btn-g:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}
.btn-t{padding:10px 4px;color:var(--blue);font-weight:600;background:transparent;border-color:transparent}
:root[data-theme="dark"] .lgo img{filter:grayscale(1) invert(1);opacity:.55}
:root[data-theme="dark"] .lgo:hover img{filter:none;opacity:1}
:root[data-theme="dark"] .btn-t,:root[data-theme="dark"] .more{color:#8FB0FF}
.btn-t:hover{text-decoration:underline}
.btn:active{transform:scale(.98)}
.btn-w{background:#fff;color:var(--blue);box-shadow:0 10px 22px -14px rgb(0 0 0/.5)}
.btn-w .arr{background:var(--blue-s)}
.btn-w:hover{transform:translateY(-2px)}
.btn-o{background:rgb(255 255 255/.12);border-color:rgb(255 255 255/.4);color:#fff;padding:10px 18px}
.btn-o:hover{background:#fff;color:var(--blue)}

/* Hiện dần khi cuộn: nhấc nhẹ và rõ nét dần */
.rv{opacity:0}
.rv.in{opacity:1;animation:rvin .9s var(--ease) backwards;animation-delay:calc(var(--d,0) * 80ms)}
@keyframes rvin{from{opacity:0;transform:translateY(22px);filter:blur(6px)}}
@keyframes rvfade{from{opacity:0}}

/* Vỏ kép: khung ngoài mảnh + lõi trong */
.bz{padding:5px;background:color-mix(in srgb,var(--blue) 5%,var(--surface));border:1px solid var(--line);border-radius:var(--r2);box-shadow:var(--sh)}
.bz>.core{background:var(--surface);border-radius:var(--r);box-shadow:inset 0 1px 0 rgb(255 255 255/.7);overflow:hidden;height:100%}

.sh{max-width:640px;margin-bottom:34px}
.sh h2{font-size:clamp(1.7rem,3.2vw,2.5rem)}
.sh p{margin-top:12px;font-size:16px}

/* Sắc độ tuần hoàn: xanh dương, xanh trời, xanh lam, chàm, xanh ngọc */
.kc>:nth-child(5n+1),.k1{--c:var(--blue)}
.kc>:nth-child(5n+2),.k2{--c:var(--sky)}
.kc>:nth-child(5n+3),.k3{--c:var(--cyan)}
.kc>:nth-child(5n+4),.k4{--c:var(--indigo)}
.kc>:nth-child(5n+5),.k5{--c:var(--teal)}

/* ===== NAV nổi ===== */
.nav{position:sticky;top:0;z-index:100;padding:0;background:color-mix(in srgb,var(--surface) 90%,transparent);backdrop-filter:blur(16px) saturate(160%);-webkit-backdrop-filter:blur(16px) saturate(160%);border-bottom:1px solid var(--line);box-shadow:0 10px 26px -20px rgb(15 23 48/.35)}
.navbar{position:relative;display:flex;align-items:center;gap:16px;height:64px;padding:0}
.logo{display:flex;align-items:center;gap:10px;white-space:nowrap}
.logo .mk{width:40px;height:40px;flex:none;transition:transform .8s var(--ease)}
.logo:hover .mk{transform:rotate(-14deg)}
.logo .wm{display:grid;line-height:1}
.logo .w1{font:700 19px/1 var(--font);letter-spacing:-.035em}
.logo .w1 i{font-style:normal;font-weight:500}
.logo .w1 b{color:var(--blue)}
.logo small{font:500 11px/1 var(--font);color:var(--mut2);margin-top:4px}
.logo.big .mk{width:50px;height:50px}.logo.big .w1{font-size:27px}.logo.big small{font-size:13px;margin-top:6px}
.menu{display:flex;gap:0;margin-left:6px;flex:1;height:100%}
.mi{position:relative;display:flex;align-items:center}
.mi>a{display:flex;align-items:center;gap:5px;white-space:nowrap;padding:8px 10px;font-size:14.5px;font-weight:500;color:var(--mut);border-radius:var(--r);transition:color .25s,background-color .25s}
.mi:hover>a,.mi:focus-within>a{color:var(--blue);background:var(--blue-s)}
.mi.wide{position:static}
.mg{position:absolute;left:0;right:0;top:calc(100% + 1px);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .3s,transform .5s var(--ease),visibility .3s}
.mi.wide:hover .mg,.mi.wide:focus-within .mg{opacity:1;visibility:visible;transform:none}
.mg-in{display:grid;grid-template-columns:1fr 280px;gap:8px;padding:6px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);box-shadow:0 30px 60px -28px rgb(15 23 48/.4)}
.mg-list{display:grid;grid-template-columns:1fr 1fr;gap:2px;padding:10px;align-content:start}
.mg-it{display:flex;gap:12px;align-items:flex-start;padding:11px;border-radius:var(--r);transition:background-color .25s}
.mg-it:hover{background:var(--blue-s)}
.mg-it:hover .it{background:var(--c,var(--blue));color:#fff}
.mg-it b{display:block;font-size:14.5px;line-height:1.3}
.mg-it small{display:block;font-size:13px;color:var(--mut);line-height:1.45;margin-top:2px}
.mg-feat{display:flex;flex-direction:column;background:var(--bg);border-radius:var(--r);overflow:hidden;transition:transform .5s var(--ease)}
.mg-feat .im{aspect-ratio:16/10;overflow:hidden}
.mg-feat img{width:100%;height:100%;object-fit:cover;object-position:top;transition:transform .9s var(--ease)}
.mg-feat:hover img{transform:scale(1.06)}
.mg-feat .tx{padding:12px 14px;display:grid;gap:3px}
.mg-feat b{font-size:14.5px}.mg-feat small{font-size:13px;color:var(--mut)}
.nav-tel{display:none}
.ico-b{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--line2);border-radius:var(--r);background:var(--surface);cursor:pointer;font-size:17px;transition:border-color .25s,color .25s}
.ico-b:hover{border-color:var(--blue);color:var(--blue)}
html[data-motion="full"] #mtg{color:var(--blue);border-color:var(--blue)}
.thm .i-sun{display:none}
:root[data-theme="dark"] .thm .i-sun{display:block}
:root[data-theme="dark"] .thm .i-moon{display:none}
.burger{display:none}
.prog{position:fixed;left:0;top:0;height:2px;width:100%;background:var(--blue);transform-origin:0 50%;transform:scaleX(0);z-index:250}
@supports (animation-timeline:scroll()){.prog{animation:prog linear both;animation-timeline:scroll(root)}}
@keyframes prog{to{transform:scaleX(1)}}

/* ===== HERO ===== */
.hero{position:relative;overflow:hidden;padding-block:clamp(40px,6vw,84px) clamp(36px,5vw,64px)}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(900px 480px at 78% 8%,color-mix(in srgb,var(--blue) 12%,transparent),transparent 70%),radial-gradient(600px 400px at 0% 100%,color-mix(in srgb,var(--blue) 6%,transparent),transparent 70%),radial-gradient(520px 340px at 58% 100%,color-mix(in srgb,var(--cyan) 9%,transparent),transparent 70%),radial-gradient(460px 300px at 100% 60%,color-mix(in srgb,var(--sky) 10%,transparent),transparent 70%);pointer-events:none}
.hero .wrap{position:relative;z-index:1}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(color-mix(in srgb,var(--blue) 26%,transparent) 1px,transparent 1.2px);background-size:22px 22px;mask-image:radial-gradient(520px 340px at 85% 30%,#000,transparent 75%);-webkit-mask-image:radial-gradient(520px 340px at 85% 30%,#000,transparent 75%);pointer-events:none;opacity:.7}
.glow{position:absolute;inset:0;pointer-events:none;background:radial-gradient(420px circle at var(--gx,72%) var(--gy,30%),color-mix(in srgb,var(--blue) 12%,transparent),transparent 70%)}
.hero-g{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1.08fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(2.5rem,5.4vw,4.4rem);line-height:1.05;letter-spacing:-.04em;max-width:11ch}
.hero h1 .ln{display:block;overflow:hidden;padding-bottom:.08em}
.hero h1 .ln>span{display:inline-block;transform:translateY(105%);animation:rise 1s var(--ease) forwards;animation-delay:calc(var(--i)*100ms + 80ms)}
@keyframes rise{to{transform:none}}
.hl{color:var(--blue)}
.hero .sub{margin-top:20px;font-size:18px;max-width:38ch;opacity:0;animation:up .8s .5s var(--ease) forwards}
.hero .cta{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;opacity:0;animation:up .8s .62s var(--ease) forwards}
.hero .pts{margin-top:26px;display:flex;flex-wrap:wrap;gap:8px 20px;font-size:14px;color:var(--mut);opacity:0;animation:up .8s .74s var(--ease) forwards}
.hero .pts li{display:flex;gap:8px;align-items:center}
.hero .pts .ph{color:var(--blue)}
@keyframes up{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.devs{position:relative;aspect-ratio:1.14;--px:0;--py:0}
.shape{position:absolute;pointer-events:none}
.s-glow{width:70%;aspect-ratio:1;left:15%;top:8%;border-radius:50%;background:color-mix(in srgb,var(--blue) 14%,transparent);filter:blur(50px)}
.s-ring{width:36%;aspect-ratio:1;right:-2%;top:-5%;border-radius:50%;border:1px solid color-mix(in srgb,var(--blue) 35%,transparent)}
.s-ring::after{content:"";position:absolute;inset:14%;border-radius:50%;border:1px dashed color-mix(in srgb,var(--blue) 30%,transparent)}
.dv{position:absolute;overflow:hidden;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);box-shadow:0 34px 56px -30px rgb(15 23 48/.5);transform:translate(calc(var(--px)*var(--k)*1px),calc(var(--py)*var(--k)*1px));transition:transform .5s ease-out}
.dv .bw{display:flex;gap:4px;padding:7px 9px;background:var(--soft);border-bottom:1px solid var(--line)}
.dv .bw i{width:6px;height:6px;border-radius:50%;background:var(--line2)}
.dv img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;object-position:top}
.d1{left:2%;top:10%;width:76%;--k:6;z-index:2}
.d2{right:0;top:38%;width:50%;--k:12;z-index:3}
.d3{left:14%;bottom:0;width:42%;--k:9;z-index:4}
.fc{position:absolute;z-index:6;display:flex;gap:10px;align-items:center;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:var(--r2);padding:9px 12px;box-shadow:0 18px 30px -16px rgb(15 23 48/.4);font-size:13px;font-weight:600;line-height:1.3;animation:float 7s ease-in-out infinite;transform:translate(calc(var(--px)*var(--k)*1px),calc(var(--py)*var(--k)*1px))}
.fc .it{width:28px;height:28px;font-size:15px}
.fc small{display:block;font-weight:400;color:var(--mut);font-size:12px}
.f1{right:5%;top:4%;--k:16}
.f2{left:-1%;top:56%;--k:14;animation-delay:-3s}
@keyframes float{50%{margin-top:-8px}}
.plat{position:relative;z-index:1;display:flex;align-items:center;gap:6px 18px;flex-wrap:wrap;margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
.plat p{font-size:13.5px;font-weight:500;margin-right:4px}
.lgo{display:grid;place-items:center;width:32px;height:32px}
.lgo img{width:20px;height:20px;filter:grayscale(1);opacity:.6;transition:filter .35s,opacity .35s,transform .5s var(--ease)}
.lgo:hover img{filter:none;opacity:1;transform:translateY(-2px)}

/* ===== HỆ SINH THÁI ===== */
.eco-g{display:grid;grid-template-columns:.78fr 1.22fr;gap:56px;align-items:start}
.eco-l{position:sticky;top:110px}
.eco-l h2{font-size:clamp(1.8rem,3.4vw,2.7rem)}
.eco-l>p{margin-top:14px;font-size:16px;max-width:40ch}
.cnt{display:grid;grid-template-columns:1fr 1fr;gap:1px;margin-top:30px;background:var(--line);border:1px solid var(--line);border-radius:var(--r2);overflow:hidden}
.cn{background:var(--surface);padding:18px 18px 16px;transition:background-color .3s}
.cn:hover{background:var(--blue-s)}
.cn b{display:block;font-size:2.7rem;font-weight:600;line-height:1;letter-spacing:-.04em;color:var(--blue);font-variant-numeric:tabular-nums}
.cn span{display:block;margin-top:8px;font-size:13.5px;color:var(--mut);line-height:1.4}
.eco-l .btn{margin-top:26px}
.layers{border-top:1px solid var(--line)}
.layer{border-bottom:1px solid var(--line)}
.layer summary{display:grid;grid-template-columns:34px 42px 1fr auto 22px;gap:14px;align-items:center;padding:20px 4px;cursor:pointer;list-style:none;transition:padding-left .5s var(--ease)}
.layer summary::-webkit-details-marker{display:none}
.layer summary:hover{padding-left:10px}
.layer .n{font-size:12.5px;font-weight:600;color:var(--mut2);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.layer b{display:block;font-size:1.2rem;letter-spacing:-.02em;line-height:1.2}
.layer .d{display:block;font-size:14px;color:var(--mut);margin-top:3px}
.layer .c{font-size:12.5px;font-weight:600;color:var(--c);background:color-mix(in srgb,var(--c) 11%,var(--surface));padding:4px 9px;border-radius:var(--r);white-space:nowrap}
.layer .cv{transition:transform .5s var(--ease);color:var(--mut)}
.layer[open] .cv{transform:rotate(180deg)}
.layer[open] .it{background:var(--c,var(--blue));color:#fff}
.layer .fnl{display:grid;grid-template-columns:1fr 1fr;gap:2px 22px;padding:0 4px 24px 90px}
.layer .fnc{display:flex;gap:9px;align-items:center;padding:7px 0;font-size:14.5px;border-bottom:1px dashed var(--line);animation:fadeup .6s var(--ease) backwards;animation-delay:calc(var(--k,0)*40ms)}
.layer .fnc .ph{color:var(--c);font-size:17px}
@keyframes fadeup{from{opacity:0;transform:translateY(8px)}}

/* ===== THEO NGÀNH ===== */
.bandw{background:color-mix(in srgb,var(--blue) 3.5%,var(--surface));border-block:1px solid var(--line)}
.bandsky{background:color-mix(in srgb,var(--sky) 6%,var(--surface));border-block:1px solid var(--line)}
.bandcy{background:color-mix(in srgb,var(--cyan) 5.5%,var(--surface));border-block:1px solid var(--line)}
.ng{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.ng a{position:relative;overflow:hidden;display:grid;gap:16px;align-content:start;min-height:152px;padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);transition:transform .5s var(--ease),border-color .3s,box-shadow .5s var(--ease)}
.ng a:hover{transform:translateY(-5px);border-color:var(--blue);box-shadow:var(--sh)}
.ng a:hover .it{background:var(--c,var(--blue));color:#fff;transform:translateY(-2px)}
.ng b{display:block;font-size:16px;line-height:1.3}
.ng small{display:block;font-size:13.5px;color:var(--mut);line-height:1.5;margin-top:3px}
.ng .go{position:absolute;right:16px;top:18px;color:var(--mut2);font-size:18px;transition:transform .5s var(--ease),color .3s}
.ng a:hover .go{transform:translate(3px,-3px);color:var(--blue)}
.ngo{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:14px;padding:16px 20px;border:1px dashed var(--line2);border-radius:var(--r2);background:transparent}
.ngo b{font-size:15.5px}.ngo p{font-size:14px}

/* ===== DỰ ÁN ===== */
.case{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);overflow:hidden;transition:transform .55s var(--ease),border-color .3s,box-shadow .55s var(--ease)}
.case:hover{transform:translateY(-5px);border-color:var(--blue);box-shadow:var(--sh)}
.cf{display:flex;align-items:center;gap:10px;padding:8px 12px;background:var(--soft);border-bottom:1px solid var(--line);font-size:12.5px;color:var(--mut)}
.cf .dd{display:flex;gap:4px}.cf .dd i{width:7px;height:7px;border-radius:50%;background:var(--line2)}
.cf .url{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.cs{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--soft)}
.cs img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 0;transition:object-position 6s ease-in-out}
.case:hover .cs img{object-position:50% 100%}
.cs .hint{position:absolute;right:10px;bottom:10px;font-size:12px;font-weight:500;padding:4px 9px;border-radius:var(--r);background:rgb(15 23 48/.82);color:#fff;opacity:0;transform:translateY(6px);transition:opacity .4s,transform .5s var(--ease)}
.case:hover .cs .hint{opacity:1;transform:none}
.cb{padding:16px 18px 18px;display:grid;gap:10px;align-content:start;flex:1}
.cb h3{font-size:1.1rem;line-height:1.25}
.dl{display:grid;gap:7px;font-size:13.5px}
.dl div{display:grid;grid-template-columns:78px 1fr;gap:8px;line-height:1.5}
.dl dt{color:var(--mut2)}.dl dd{margin:0;color:var(--ink)}
.cact{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}
.cact .btn{font-size:13.5px}
.st{font-size:12px;font-weight:600;padding:3px 8px;border-radius:var(--r);white-space:nowrap;display:inline-block}
.st.on{background:var(--blue-s);color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue-m)}
.st.tr{background:var(--soft);color:var(--mut)}
.bz.bigw{margin-bottom:10px}
.bigw .case{border:0;border-radius:var(--r);display:grid;grid-template-columns:1.3fr 1fr;box-shadow:none}
.bigw .case:hover{transform:none}
.bigw .cwrap{display:flex;flex-direction:column;border-right:1px solid var(--line)}
.bigw .cs{aspect-ratio:auto;flex:1;min-height:400px}
.bigw .cb{padding:30px 32px;gap:16px;align-content:center}
.bigw h3{font-size:1.9rem}
.bigw .lead{font-size:15.5px}
.bigw .dl{font-size:14.5px;gap:10px}.bigw .dl div{grid-template-columns:92px 1fr}
.cases{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.cta-line{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;margin-top:10px;padding:18px 22px;border:1px dashed var(--line2);border-radius:var(--r2)}
.cta-line b{font-size:1.05rem}.cta-line p{font-size:14px}

/* ===== AI ===== */
.ai-g{display:grid;grid-template-columns:1fr 1.02fr;gap:56px;align-items:center}
.ai-l h2{font-size:clamp(1.7rem,3.2vw,2.5rem);max-width:15ch}
.ai-l>p{margin-top:14px;font-size:16px;max-width:44ch}
.pr3{margin-top:26px;display:grid;gap:4px}
.pr3 li{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-top:1px solid var(--line)}
.pr3 b{display:block;font-size:15.5px;line-height:1.3}
.pr3 small{display:block;font-size:14px;color:var(--mut);line-height:1.5;margin-top:2px}
.ai-l .acts{display:flex;gap:10px;margin-top:22px;align-items:center;flex-wrap:wrap}
.chat-top{display:flex;align-items:center;gap:12px;padding:13px 16px;border-bottom:1px solid var(--line)}
.av{width:34px;height:34px;border-radius:var(--r);background:var(--blue);color:#fff;display:grid;place-items:center;font-size:18px}
.chat-top b{font-size:14.5px;display:block;line-height:1.2}.chat-top small{font-size:12.5px;color:var(--mut)}
.msgs{padding:16px;display:flex;flex-direction:column;gap:10px;min-height:310px;background:color-mix(in srgb,var(--blue) 3%,var(--surface))}
.m{max-width:86%;padding:10px 13px;border-radius:var(--r);font-size:14.5px;line-height:1.5;opacity:0;transform:translateY(10px);transition:opacity .5s var(--ease),transform .6s var(--ease)}
.m.show{opacity:1;transform:none}
.m.me{align-self:flex-end;background:var(--blue);color:#fff}
.m.bot{align-self:flex-start;background:var(--surface);border:1px solid var(--line)}
.m.sys{align-self:stretch;max-width:100%;background:var(--blue-s);border:1px solid var(--blue-m);color:var(--blue);font-weight:600;font-size:13.5px;display:flex;gap:8px;align-items:center}
.flowline{display:flex;align-items:center;gap:10px;padding:12px 16px;border-top:1px solid var(--line);font-size:12.5px;color:var(--mut);flex-wrap:wrap}
.flowline i.ph{color:var(--blue)}
.flowline .sep{flex:1;min-width:20px;height:1px;background:linear-gradient(90deg,var(--line2),var(--blue),var(--line2));background-size:200% 100%;animation:sweep 3s linear infinite}
@keyframes sweep{to{background-position:-200% 0}}

/* ===== KHO GIAO DIỆN ===== */
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:18px}
.chip{padding:7px 14px;border-radius:var(--r);border:1px solid var(--line2);background:var(--surface);font-size:13.5px;font-weight:500;cursor:pointer;transition:all .3s var(--ease)}
.chip:hover{border-color:var(--blue);color:var(--blue)}
.chip[aria-pressed="true"]{background:var(--blue);border-color:var(--blue);color:#fff}
.tpls{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.tp{position:relative;overflow:hidden;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);display:flex;flex-direction:column;transition:transform .55s var(--ease),border-color .3s,box-shadow .55s var(--ease)}
.tp[hidden]{display:none}
.tp:hover{transform:translateY(-5px);border-color:var(--blue);box-shadow:var(--sh)}
.wf{aspect-ratio:16/9;padding:12px;background:color-mix(in srgb,var(--blue) 6%,var(--surface));border-bottom:1px solid var(--line);display:grid;grid-template-rows:14px 1fr 30%;gap:7px;overflow:hidden}
.wf>span{border-radius:2px}
.w-nav{display:block;position:relative;background:var(--surface);box-shadow:inset 0 0 0 1px var(--line)}
.w-nav::before{content:"";position:absolute;left:6px;top:5px;width:24px;height:4px;border-radius:1px;background:var(--ink);opacity:.7}
.w-nav::after{content:"";position:absolute;right:6px;top:4px;width:30px;height:6px;border-radius:1px;background:var(--blue)}
.w-hero{display:grid;grid-template-columns:1.15fr 1fr;gap:8px}
.w-hero em{display:block;background:
 linear-gradient(var(--ink) 0 0) 2px 6px/62% 6px no-repeat,
 linear-gradient(var(--line2) 0 0) 2px 19px/88% 3px no-repeat,
 linear-gradient(var(--line2) 0 0) 2px 26px/72% 3px no-repeat,
 linear-gradient(var(--blue) 0 0) 2px 38px/34% 9px no-repeat}
.w-hero u{display:block;border-radius:2px;background:linear-gradient(135deg,var(--blue-m),color-mix(in srgb,var(--blue) 36%,var(--surface)));transition:transform .8s var(--ease)}
.tp:hover .w-hero u{transform:scale(1.05)}
.w-row{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}
.w-row i{display:block;position:relative;background:var(--surface);box-shadow:inset 0 0 0 1px var(--line);border-radius:2px;transition:transform .5s var(--ease)}
.w-row i::after{content:"";position:absolute;left:5px;top:5px;right:5px;height:36%;background:var(--blue-m);border-radius:1px}
.tp:hover .w-row i{transform:translateY(-3px)}
.tp:hover .w-row i:nth-child(2){transition-delay:.06s}.tp:hover .w-row i:nth-child(3){transition-delay:.12s}
.v2 .w-hero{grid-template-columns:1fr}.v2 .w-hero u{display:none}
.v3 .w-row{grid-template-columns:repeat(4,1fr)}
.v4 .w-hero em{order:2}
.tb{padding:16px 18px 14px;display:grid;gap:8px;flex:1;align-content:start}
.tb h3{font-size:1.1rem}.tb p{font-size:14px;line-height:1.5}
.tags{display:flex;flex-wrap:wrap;gap:5px}
.tags span{font-size:12.5px;padding:3px 8px;border-radius:var(--r);background:var(--soft);color:var(--mut)}
.tf{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:11px 18px;border-top:1px solid var(--line);font-size:13px}
.tf a{font-weight:600;color:var(--blue)}.tf a:hover{text-decoration:underline}
.sb{font-size:12px;font-weight:600;padding:3px 8px;border-radius:var(--r)}
.sb.on{background:var(--blue-s);color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue-m)}
.sb.pl2{background:var(--soft);color:var(--mut)}
.kf{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:16px;padding:16px 20px;border:1px dashed var(--line2);border-radius:var(--r2)}
.kf p{font-size:14.5px;color:var(--ink)}

/* ===== KHO ỨNG DỤNG ===== */
.adv{display:grid;grid-template-columns:auto auto 1fr;gap:12px 16px;align-items:end;padding:18px 20px;margin-bottom:22px}
.adv label{display:grid;gap:6px;font-size:13px;font-weight:600;color:var(--mut)}
.adv select{min-width:210px}
.advo{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:14px;color:var(--ink);min-height:44px}
.advo span{max-width:46ch;line-height:1.5}
.lgd{display:flex;gap:18px;flex-wrap:wrap;margin-bottom:20px;font-size:13px;color:var(--mut)}
.lgd span{display:flex;gap:7px;align-items:center}
.dot{width:8px;height:8px;border-radius:50%;background:var(--blue)}
.dot.e{background:transparent;box-shadow:inset 0 0 0 2px var(--blue)}
.dot.a{border-radius:1px;transform:rotate(45deg);background:var(--mut2)}

/* ===== KHO DỊCH VỤ ===== */
.srv{border-top:1px solid var(--line)}
.sr{position:relative;display:grid;grid-template-columns:44px 1.1fr 1.5fr 140px;gap:20px;align-items:center;padding:22px 8px;border-bottom:1px solid var(--line);transition:padding-left .55s var(--ease),background-color .35s}
.sr::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--blue);transform:scaleY(0);transition:transform .5s var(--ease)}
.sr:hover{padding-left:20px;background:var(--blue-s)}
.sr:hover::before{transform:scaleY(1)}
.sr:hover .it{background:var(--c,var(--blue));color:#fff}
.sr h3{font-size:1.15rem}
.sr .sub2{font-size:14px;color:var(--mut);margin-top:3px}
.sc{display:flex;flex-wrap:wrap;gap:6px}
.sc li{font-size:13.5px;padding:4px 10px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);color:var(--mut)}
.sr .end{display:grid;gap:6px;justify-items:end;text-align:right}
.bill{font-size:12.5px;font-weight:600;color:var(--blue)}
.sa{font-weight:600;font-size:14px;color:var(--blue)}
.sa .ph{transition:transform .5s var(--ease)}
.sr:hover .sa .ph{transform:translate(3px,-3px)}

/* ===== KIỂM TRA NHANH ===== */
.quiz{display:grid;grid-template-columns:.85fr 1.15fr;min-height:360px}
.quiz .ql{position:relative;overflow:hidden;background:var(--blue);color:#fff;padding:34px}
.quiz .ql::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgb(255 255 255/.22) 1px,transparent 1.2px);background-size:20px 20px;mask-image:radial-gradient(300px 260px at 100% 100%,#000,transparent);-webkit-mask-image:radial-gradient(300px 260px at 100% 100%,#000,transparent)}
.quiz .ql>*{position:relative}
.quiz h2{font-size:clamp(1.6rem,2.8vw,2.2rem);color:#fff;max-width:13ch}
.quiz .ql p{color:rgb(255 255 255/.88);margin-top:12px;max-width:34ch}
.quiz .ql ul{margin-top:20px;display:grid;gap:9px;font-size:14.5px}
.quiz .ql li{display:flex;gap:9px;align-items:center}
.qr2{padding:32px 34px;display:grid;gap:18px;align-content:start}
.qprog{display:flex;gap:6px}
.qprog i{height:3px;flex:1;border-radius:2px;background:var(--line2);transition:background-color .4s}
.qprog i.on{background:var(--blue)}
.qq{font-size:1.25rem;font-weight:600;line-height:1.3}
.qo{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.qo button{padding:13px 15px;text-align:left;font-weight:500;font-size:14.5px;background:var(--bg);border:1px solid var(--line2);border-radius:var(--r);cursor:pointer;transition:transform .45s var(--ease),border-color .25s,background-color .25s}
.qo button:hover{transform:translateY(-3px);border-color:var(--blue);background:var(--blue-s)}
.qres h3{font-size:1.55rem}
.qres .rec{display:inline-block;margin-bottom:10px}
.qres ul{display:grid;gap:8px;margin:14px 0 18px}
.qres li{display:flex;gap:9px;line-height:1.5;font-size:14.5px}
.qres li .ph{color:var(--blue);flex:none;margin-top:3px}
.qres small{display:block;color:var(--mut);margin-top:12px;font-size:13px}
.cact{display:flex;gap:8px;flex-wrap:wrap}

/* ===== GIÁ ===== */
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;align-items:stretch}
.plan{position:relative;display:flex;flex-direction:column;gap:16px;padding:24px 22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);transition:transform .55s var(--ease),border-color .3s,box-shadow .55s var(--ease)}
.plan:hover{transform:translateY(-5px);border-color:var(--blue);box-shadow:var(--sh)}
.plan .hd{display:flex;align-items:center;gap:11px}
.plan h3{font-size:1.2rem}
.price{font-size:1.1rem;font-weight:600;line-height:1.3;min-height:3.4em}
.price small{display:block;font-size:13px;font-weight:400;color:var(--mut);margin-top:4px}
.plan ul{display:grid;gap:10px;font-size:14.5px;flex:1;padding-top:16px;border-top:1px solid var(--line)}
.plan li{display:flex;gap:9px;align-items:flex-start;line-height:1.45}
.plan li .ph{color:var(--blue);flex:none;margin-top:3px}
.plan .btn{justify-content:center}
.plan.rec{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 30px 50px -26px rgb(47 84 235/.7)}
.plan.rec h3,.plan.rec .price{color:#fff}
.plan.rec .price small,.plan.rec li{color:rgb(255 255 255/.86)}
.plan.rec ul{border-color:rgb(255 255 255/.25)}
.plan.rec li .ph{color:#fff}
.plan.rec .it{background:rgb(255 255 255/.16);color:#fff;box-shadow:none}
.plan.rec .rb{position:absolute;right:16px;top:20px;font-size:12px;font-weight:700;background:var(--amber);color:#3a2600;padding:3px 9px;border-radius:var(--r)}
.plan.rec:hover{box-shadow:0 36px 56px -26px rgb(47 84 235/.8)}
.ex{display:grid;grid-template-columns:1.2fr 1fr;gap:10px;margin-top:10px}
.box{padding:22px}
.box h3{font-size:1.05rem;margin-bottom:14px}
.mods{display:flex;flex-wrap:wrap;gap:6px}
.mods span{font-size:13.5px;padding:5px 11px;border-radius:var(--r);background:var(--soft);color:var(--mut);transition:background-color .3s,color .3s}
.mods span:hover{background:var(--blue-s);color:var(--blue)}
.dom{display:grid;gap:14px}
.dom div{display:flex;gap:13px;align-items:flex-start}
.dom b{display:block;font-size:14.5px}.dom small{color:var(--mut);font-size:13.5px}

/* ===== QUY TRÌNH ===== */
.pr{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.pr::before{content:"";position:absolute;left:18px;right:18px;top:18px;border-top:1px solid var(--line2)}
.pr li{position:relative;padding:0 22px 0 0}
.pr .n{position:relative;width:36px;height:36px;display:grid;place-items:center;border-radius:var(--r);background:var(--surface);border:1px solid var(--line2);font-weight:600;font-size:14px;color:var(--blue);margin-bottom:18px;transition:background-color .35s,color .35s,transform .5s var(--ease)}
.pr li:hover .n{background:var(--blue);color:#fff;transform:translateY(-2px)}
.pr h3{font-size:1.05rem;margin-bottom:6px}
.pr p{font-size:14px;line-height:1.55}
.pledge{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:40px;background:var(--line);border:1px solid var(--line);border-radius:var(--r2);overflow:hidden}
.pg{display:flex;gap:12px;align-items:flex-start;padding:18px;background:var(--surface);transition:background-color .3s}
.pg:hover{background:var(--blue-s)}
.pg b{display:block;font-size:14.5px;line-height:1.3}.pg small{display:block;font-size:13px;color:var(--mut);line-height:1.45;margin-top:2px}

/* ===== FAQ ===== */
.fq{display:grid;grid-template-columns:.7fr 1.3fr;gap:56px;align-items:start}
.fq-l h2{font-size:clamp(1.7rem,3vw,2.3rem)}.fq-l p{margin-top:12px}
.fq-l .btn{margin-top:20px}
.fq-r{border-top:1px solid var(--line)}
details.q{border-bottom:1px solid var(--line)}
details.q summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center;padding:19px 4px;font-weight:600;font-size:15.5px;line-height:1.4;transition:color .25s}
details.q summary::-webkit-details-marker{display:none}
details.q summary:hover{color:var(--blue)}
details.q summary .ph{flex:none;color:var(--mut2);transition:transform .5s var(--ease),color .25s}
details.q[open] summary .ph{transform:rotate(45deg);color:var(--blue)}
details.q p{padding:0 4px 20px;font-size:15px;max-width:60ch}

/* ===== LIÊN HỆ ===== */
.ct{display:grid;grid-template-columns:1fr 1fr;min-height:100%}
.ct .l{position:relative;overflow:hidden;padding:38px;background:var(--blue);color:#fff}
.ct .l::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgb(255 255 255/.22) 1px,transparent 1.2px);background-size:20px 20px;mask-image:radial-gradient(360px 300px at 0% 100%,#000,transparent);-webkit-mask-image:radial-gradient(360px 300px at 0% 100%,#000,transparent)}
.ct .l::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;border:1px solid rgb(255 255 255/.25);right:-110px;top:-110px;box-shadow:0 0 0 40px rgb(255 255 255/.05)}
.ct .l>*{position:relative;z-index:1}
.ct h2{font-size:clamp(1.8rem,3.2vw,2.6rem);max-width:12ch;color:#fff}
.ct .l p{margin-top:14px;max-width:38ch;color:rgb(255 255 255/.88)}
.cts{margin-top:26px;display:grid;gap:8px;max-width:270px}
.cts a{display:flex;gap:11px;align-items:center;font-weight:500;font-size:14.5px;padding:11px 13px;background:rgb(255 255 255/.1);border:1px solid rgb(255 255 255/.28);border-radius:var(--r);transition:background-color .3s,color .3s,transform .5s var(--ease)}
.cts a:hover{background:#fff;color:var(--blue);transform:translateX(5px)}
form{display:grid;gap:14px;padding:34px;align-content:start;background:var(--surface)}
.f{display:grid;gap:6px}
label{font-weight:600;font-size:13.5px}
input,select,textarea{width:100%;padding:11px 13px;border-radius:var(--r);border:1px solid var(--line2);background:var(--bg);transition:border-color .25s,box-shadow .25s}
input::placeholder,textarea::placeholder{color:var(--mut2)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgb(47 84 235/.18)}
textarea{min-height:76px;resize:vertical}
.f small{color:var(--mut);font-size:13px}
.f .err{display:none;color:var(--err);font-size:13px}
.f.bad .err{display:block}.f.bad input,.f.bad select{border-color:var(--err)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.ok{display:none;padding:11px 13px;border:1px solid var(--blue-m);border-radius:var(--r);background:var(--blue-s);font-size:14px}
.ok.show{display:block}
.ok.fail{border-color:var(--err);background:#fdf1f1}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.consent{margin:2px 0 0;color:var(--mut);font-size:12.5px}
option{background:var(--surface)}
form .btn-p{justify-content:space-between}

/* ===== FOOTER ===== */
footer{margin-top:20px;background:color-mix(in srgb,var(--blue) 5%,var(--bg));border-top:1px solid var(--line);overflow:hidden}
.t1{padding-top:56px}
.fcta{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:30px 34px;background:var(--blue);color:#fff;border-radius:var(--r)}
.fcta::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgb(255 255 255/.2) 1px,transparent 1.2px);background-size:20px 20px;mask-image:radial-gradient(420px 220px at 100% 0%,#000,transparent);-webkit-mask-image:radial-gradient(420px 220px at 100% 0%,#000,transparent)}
.fcta>*{position:relative}
.fcta h2{font-size:clamp(1.5rem,2.8vw,2.1rem);max-width:20ch;color:#fff}
.fcta p{margin-top:8px;color:rgb(255 255 255/.88)}
.fb{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.t2{padding-top:56px}
.fcs{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.fcs a{display:flex;gap:14px;align-items:center;padding:16px 18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);transition:transform .5s var(--ease),border-color .3s}
.fcs a:hover{transform:translateY(-3px);border-color:var(--blue)}
.fcs b{display:block;font-size:15px}.fcs small{color:var(--mut);font-size:13.5px}
.t3{padding-block:46px 30px}
.fgrid{display:grid;grid-template-columns:1.35fr repeat(5,1fr);gap:26px}
.fbrand p{font-size:14.5px;margin:18px 0 18px;max-width:34ch}
.soc{display:flex;gap:8px}
.soc a{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line2);border-radius:var(--r);font-size:18px;color:var(--mut);transition:all .4s var(--ease)}
.soc a:hover{background:var(--blue);border-color:var(--blue);color:#fff;transform:translateY(-3px)}
.fgrid h4{font-size:14px;margin-bottom:14px;color:var(--ink)}
.fgrid ul{display:grid;gap:10px}
.fgrid li a{font-size:14.5px;color:var(--mut);transition:color .25s,padding-left .4s var(--ease)}
.fgrid li a:hover{color:var(--blue);padding-left:5px}
.t4{border-top:1px solid var(--line);padding-block:16px}
.fbot{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;font-size:13.5px;color:var(--mut2);padding-right:210px}
.fbot .up{display:inline-flex;gap:6px;align-items:center;font-weight:600;color:var(--mut)}
.fbot .up:hover{color:var(--blue)}
.gw{display:block;text-align:center;line-height:.8;margin-bottom:-.1em;user-select:none;overflow:hidden;padding-top:6px}
.gw span{display:inline-block;font:700 clamp(3rem,13.4vw,12.8rem)/.84 var(--font);letter-spacing:-.055em;background:linear-gradient(180deg,color-mix(in srgb,var(--blue) 80%,transparent) 0%,color-mix(in srgb,var(--blue) 8%,transparent) 88%);-webkit-background-clip:text;background-clip:text;color:transparent;transition:transform 1.2s var(--ease),filter .6s}
.gw:hover span{transform:translateY(-.02em);filter:saturate(1.2)}

/* ===== TRỢ LÝ AI ===== */
.ast{position:fixed;right:16px;bottom:16px;z-index:220;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.ast-links{display:flex;gap:8px}
.ast-links a{width:42px;height:42px;border-radius:var(--r);display:grid;place-items:center;font-size:20px;background:var(--surface);color:var(--blue);border:1px solid var(--line2);box-shadow:var(--sh);transition:transform .45s var(--ease),border-color .3s}
.ast-links a:hover{transform:translateY(-3px);border-color:var(--blue)}
.ast-fab{position:relative;display:flex;align-items:center;gap:10px;padding:9px 16px 9px 9px;background:var(--blue);color:#fff;border:0;border-radius:var(--r);font-weight:600;font-size:14.5px;cursor:pointer;box-shadow:0 18px 32px -14px rgb(47 84 235/.9),inset 0 1px 0 rgb(255 255 255/.2);transition:transform .45s var(--ease)}
.ast-fab:hover{transform:translateY(-3px)}
.ast-fab:active{transform:scale(.98)}
.ast-fab .ic{width:32px;height:32px;display:grid;place-items:center;background:rgb(255 255 255/.16);border-radius:3px;font-size:18px}
.ast-fab .ping{position:absolute;right:-3px;top:-3px;width:11px;height:11px;border-radius:50%;background:#fff;box-shadow:0 0 0 3px var(--blue)}
.ast-fab .ping::after{content:"";position:absolute;inset:0;border-radius:50%;background:#fff;animation:ping 2.4s ease-out infinite}
@keyframes ping{to{transform:scale(3);opacity:0}}
.ast-nudge{position:relative;max-width:250px;padding:12px 32px 12px 14px;background:var(--surface);border:1px solid var(--line2);border-radius:var(--r2);box-shadow:var(--sh);font-size:13.5px;font-weight:500;line-height:1.45;animation:amin .6s var(--ease)}
.ast-nudge[hidden]{display:none}
.ast-nudge button{position:absolute;right:5px;top:5px;width:24px;height:24px;border:0;background:none;cursor:pointer;color:var(--mut)}
.ast-panel{padding:0;width:min(392px,calc(100vw - 32px));height:min(590px,calc(100vh - 120px));display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line2);border-radius:var(--r2);box-shadow:0 40px 80px -30px rgb(15 23 48/.55);overflow:hidden;transform-origin:100% 100%;animation:pop .5s var(--ease)}
.ast-panel[hidden]{display:none}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.97)}}
@keyframes amin{from{opacity:0;transform:translateY(8px)}}
.ast-hd{display:flex;align-items:center;gap:12px;padding:14px;background:var(--blue);color:#fff}
.ast-hd .av{background:rgb(255 255 255/.18)}
.ast-hd b{display:block;font-size:15px;line-height:1.2}
.ast-hd small{font-size:12.5px;opacity:.9;line-height:1.35;display:block}
.ast-x{margin-left:auto;width:30px;height:30px;border:0;border-radius:var(--r);background:rgb(255 255 255/.16);color:#fff;cursor:pointer;font-size:16px;transition:background-color .25s}
.ast-x:hover{background:rgb(255 255 255/.3)}
.ast-log{flex:1;overflow:auto;padding:14px;display:flex;flex-direction:column;gap:9px;background:color-mix(in srgb,var(--blue) 3%,var(--bg))}
.am{max-width:90%;padding:10px 12px;border-radius:var(--r);font-size:14px;line-height:1.55;animation:amin .5s var(--ease)}
.am.bot{background:var(--surface);border:1px solid var(--line);align-self:flex-start}
.am.me{background:var(--blue);color:#fff;align-self:flex-end}
.am .who{display:block;font-size:12px;font-weight:600;color:var(--blue);margin-bottom:3px}
.am.typing{display:flex;gap:4px;padding:13px}
.am.typing i{width:6px;height:6px;border-radius:50%;background:var(--mut2);animation:blink 1.1s infinite}
.am.typing i:nth-child(2){animation-delay:.15s}.am.typing i:nth-child(3){animation-delay:.3s}
@keyframes blink{0%,100%{opacity:.25}50%{opacity:1}}
.am .acts{display:grid;gap:6px;margin-top:9px}
.am .acts a,.am .acts button{display:flex;gap:9px;align-items:center;padding:9px 11px;border-radius:var(--r);border:1px solid var(--line2);background:var(--surface);font-weight:500;font-size:13.5px;cursor:pointer;text-align:left;transition:border-color .25s,color .25s}
.am .acts a:hover,.am .acts button:hover{border-color:var(--blue);color:var(--blue)}
.ast-qr{display:flex;flex-wrap:wrap;gap:6px;padding:10px 14px;border-top:1px solid var(--line);background:var(--surface)}
.ast-qr button{padding:6px 11px;font-size:13px;font-weight:500;border:1px solid var(--line2);border-radius:var(--r);background:var(--bg);cursor:pointer;transition:all .3s var(--ease)}
.ast-qr button:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-1px)}
.ast-form{display:flex;gap:8px;padding:10px 14px;border-top:1px solid var(--line);background:var(--surface)}
.ast-form input{flex:1;padding:10px 12px;font-size:14px}
.ast-form button{width:42px;border:0;border-radius:var(--r);background:var(--blue);color:#fff;cursor:pointer;font-size:18px;transition:background-color .25s}
.ast-form button:hover{background:var(--blue-d)}
.ast-ft{padding:9px 14px;font-size:12.5px;color:var(--mut);background:var(--soft);border-top:1px solid var(--line);display:flex;gap:7px;align-items:flex-start;line-height:1.4}
.ast-ft .ph{color:var(--blue);margin-top:1px}

/* Hiệu ứng rê chuột: vệt sáng */
.glare{position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .4s;background:radial-gradient(260px circle at var(--mx,50%) var(--my,50%),rgb(255 255 255/.5),transparent 65%);z-index:5;mix-blend-mode:soft-light}
.tilt{position:relative}
.tilt:hover .glare{opacity:1}


/* ===== NỀN HERO: đường sóng, đường mạch, lưới chuyển động nhẹ ===== */
.hbg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0}
.hbg .wv{fill:none;stroke:url(#hg1);stroke-width:1.4;opacity:.55;animation:wavex 16s ease-in-out infinite alternate}
.hbg .wv.b{opacity:.4;animation-duration:22s;animation-delay:-6s}
.hbg .wv.c{opacity:.3;animation-duration:28s;animation-delay:-12s}
.hbg .dsh{fill:none;stroke:var(--sky);stroke-width:1;stroke-dasharray:3 9;opacity:.5;animation:dmove 30s linear infinite}
.hbg .ckt{fill:none;stroke:var(--blue);stroke-opacity:.28;stroke-width:1.2}
.hbg .nd{fill:var(--surface);stroke:var(--blue);stroke-opacity:.55;stroke-width:1.4;animation:nodep 4s ease-in-out infinite}
.hbg .nd.b{animation-delay:-1.3s;stroke:var(--cyan)}.hbg .nd.c{animation-delay:-2.6s;stroke:var(--sky)}
.hbg .pk{fill:var(--cyan)}
@keyframes wavex{to{transform:translateX(-46px)}}
@keyframes dmove{to{stroke-dashoffset:-240}}
@keyframes nodep{50%{r:7;stroke-opacity:.9}}
.hgrid{position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(color-mix(in srgb,var(--blue) 9%,transparent) 1px,transparent 1px),linear-gradient(90deg,color-mix(in srgb,var(--blue) 9%,transparent) 1px,transparent 1px);background-size:72px 72px;mask-image:radial-gradient(700px 420px at 14% 78%,#000,transparent 72%);-webkit-mask-image:radial-gradient(700px 420px at 14% 78%,#000,transparent 72%);animation:gridpan 60s linear infinite}
@keyframes gridpan{to{background-position:72px 72px}}
html[data-motion="calm"] .hbg *,html[data-motion="calm"] .hgrid,html[data-motion="calm"] .il *{animation:none!important}

/* ===== MINH HOẠ ===== */
.il{display:block;width:100%;height:auto;overflow:visible}
.il .fl{animation:ilfloat 7s ease-in-out infinite}
.il .fl.b{animation-duration:9s;animation-delay:-3s}
.il .fl.c{animation-duration:11s;animation-delay:-6s}
@keyframes ilfloat{50%{transform:translateY(-8px)}}
.il .slab{transition:transform .9s var(--ease)}
.il-stack:hover .slab{transform:translateY(calc(var(--i)*-7px))}
.il .flow{fill:none;stroke:var(--sky);stroke-width:1.6;stroke-dasharray:4 7;animation:dmove 18s linear infinite}
.eco-il{margin:24px 0 4px;max-width:330px}
.ai-r{position:relative}
.ai-r .il-flow{margin-top:18px;max-width:100%}
.ai-r>.bz{position:relative;z-index:1}

/* ===== KHO ỨNG DỤNG: có icon ===== */
.appc{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--r2);background:var(--surface);overflow:hidden}
.acol{padding:18px 16px 12px;border-right:1px solid var(--line)}
.acol:last-child{border-right:0}
.acol>header{display:flex;gap:11px;align-items:center;padding-bottom:14px;margin-bottom:6px;border-bottom:2px solid color-mix(in srgb,var(--c) 40%,var(--line))}
.acol>header b{font-size:15px}.acol>header small{display:block;font-size:12.5px;color:var(--mut)}
.app{position:relative;display:grid;grid-template-columns:36px 1fr;gap:12px;align-items:start;padding:11px 24px 11px 8px;margin:0 -8px;border-radius:var(--r);transition:background-color .3s,opacity .4s,transform .5s var(--ease)}
.app::after{content:"";position:absolute;right:10px;top:16px;width:8px;height:8px;border-radius:50%;background:var(--c)}
.app[data-p="ext"]::after{background:transparent;box-shadow:inset 0 0 0 2px var(--c)}
.app[data-p="adv"]::after{border-radius:1px;transform:rotate(45deg);background:var(--mut2)}
.app:hover{background:color-mix(in srgb,var(--c) 8%,var(--surface));transform:translateX(3px)}
.app:hover .it{background:var(--c);color:#fff;transform:rotate(-6deg) scale(1.06)}
.app b{display:block;font-size:14.5px;line-height:1.3}
.app small{display:block;font-size:13px;color:var(--mut);line-height:1.45;margin-top:2px}
.app.dim{opacity:.28}
.app.hit{background:color-mix(in srgb,var(--c) 10%,var(--surface));box-shadow:inset 3px 0 0 var(--c)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--blue)}
.appmore{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:12px;padding:18px 22px;border:1px dashed var(--line2);border-radius:var(--r2)}
.appmore b{font-size:15.5px}.appmore p{font-size:14px;max-width:70ch}

/* ===== HỌC VIỆN ===== */
.acad{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
.rtabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.rtab{display:flex;gap:9px;align-items:center;padding:9px 14px;border-radius:var(--r);border:1px solid var(--line2);background:var(--surface);font-weight:500;font-size:14px;cursor:pointer;transition:all .35s var(--ease)}
.rtab:hover{border-color:var(--c);color:var(--c)}
.rtab[aria-selected="true"]{background:var(--c);border-color:var(--c);color:#fff}
.lessons{border-top:1px solid var(--line)}
.lessons[hidden]{display:none}
.les{display:grid;grid-template-columns:36px 1fr auto;gap:14px;align-items:center;padding:13px 4px;border-bottom:1px solid var(--line);transition:padding-left .5s var(--ease),background-color .3s;animation:fadeup .6s var(--ease) backwards;animation-delay:calc(var(--k,0)*50ms)}
#les-o{--c:var(--blue)}#les-s{--c:var(--cyan)}#les-e{--c:var(--teal)}
.les:hover{padding-left:12px;background:color-mix(in srgb,var(--c) 7%,transparent)}
.les:hover .it{background:var(--c);color:#fff}
.les b{font-size:15px;font-weight:600}
.fm{font-size:12.5px;font-weight:600;padding:3px 9px;border-radius:var(--r);background:color-mix(in srgb,var(--c) 11%,var(--surface));color:var(--c);white-space:nowrap}
.acad-r .il{max-width:420px;margin:0 auto 18px}
.fmts{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.fmt{display:flex;gap:12px;align-items:flex-start;padding:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);transition:transform .5s var(--ease),border-color .3s}
.fmt:hover{transform:translateY(-3px);border-color:var(--c)}
.fmt b{display:block;font-size:14.5px;line-height:1.3}.fmt small{display:block;font-size:13px;color:var(--mut);line-height:1.45;margin-top:2px}
.acad-note{margin-top:14px;font-size:13.5px;color:var(--mut)}

/* ===== TIN TỨC, MẸO, BÀI VIẾT KỸ THUẬT ===== */
.arts{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.art{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);overflow:hidden;transition:transform .55s var(--ease),border-color .3s,box-shadow .55s var(--ease)}
.art[hidden]{display:none}
.art:hover{transform:translateY(-5px);border-color:var(--c);box-shadow:var(--sh)}
.cvr{position:relative;aspect-ratio:16/7;overflow:hidden;background:linear-gradient(135deg,color-mix(in srgb,var(--c) 20%,var(--surface)),color-mix(in srgb,var(--c) 6%,var(--surface)));border-bottom:1px solid var(--line)}
.cvr::before{content:"";position:absolute;width:150px;height:150px;border-radius:50%;right:-36px;top:-60px;border:1px solid color-mix(in srgb,var(--c) 40%,transparent);box-shadow:0 0 0 24px color-mix(in srgb,var(--c) 7%,transparent);transition:transform .9s var(--ease)}
.cvr::after{content:"";position:absolute;inset:0;background-image:radial-gradient(color-mix(in srgb,var(--c) 40%,transparent) 1px,transparent 1.3px);background-size:16px 16px;mask-image:linear-gradient(90deg,#000,transparent 60%);-webkit-mask-image:linear-gradient(90deg,#000,transparent 60%);opacity:.7}
.art:hover .cvr::before{transform:scale(1.18)}
.cvr .big{position:absolute;right:22px;bottom:14px;font-size:68px;color:var(--c);opacity:.9;z-index:1;transition:transform .7s var(--ease)}
.art:hover .cvr .big{transform:translateY(-4px) rotate(-6deg)}
.cvr .tg{position:absolute;left:14px;top:14px;z-index:2;font-size:12.5px;font-weight:600;padding:3px 9px;border-radius:var(--r);background:var(--surface);color:var(--c);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--c) 28%,transparent)}
.ab{padding:16px 18px 14px;display:grid;gap:8px;flex:1;align-content:start}
.ab h3{font-size:1.08rem;line-height:1.3}.ab p{font-size:14px;line-height:1.55}
.am2{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:6px;font-size:13px;color:var(--mut2)}
.am2 .btn{padding:6px 2px;font-size:13.5px}
dialog.dlg{border:1px solid var(--line2);border-radius:var(--r2);padding:0;width:min(700px,92vw);max-height:86vh;background:var(--surface);color:var(--ink);box-shadow:0 50px 90px -30px rgb(15 23 48/.6)}
dialog.dlg::backdrop{background:rgb(15 23 48/.5);backdrop-filter:blur(4px)}
.dlg[open]{animation:pop .5s var(--ease)}
.dlg-h{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;padding:20px 22px 14px;border-bottom:1px solid var(--line)}
.dlg-h h3{font-size:1.35rem;line-height:1.3}
.dlg-h small{display:block;margin-top:6px;color:var(--mut);font-size:13px}
.dlg-x{width:34px;height:34px;flex:none;border:1px solid var(--line2);border-radius:var(--r);background:var(--surface);cursor:pointer;font-size:16px;transition:border-color .25s,color .25s}
.dlg-x:hover{border-color:var(--blue);color:var(--blue)}
.dlg-b{padding:18px 22px 24px;overflow:auto;max-height:calc(86vh - 110px);font-size:15.5px;line-height:1.75}
.dlg-b h4{font-size:1.02rem;margin:16px 0 6px}
.dlg-b p{color:var(--ink);margin-bottom:10px}
.dlg-b ul{display:grid;gap:8px;margin:8px 0 12px;padding-left:2px}
.dlg-b li{position:relative;padding-left:22px}
.dlg-b li::before{content:"";position:absolute;left:3px;top:.7em;width:8px;height:8px;border-radius:50%;background:var(--blue)}
.dlg-b .note2{margin-top:14px;padding:12px 14px;background:var(--blue-s);border-radius:var(--r);font-size:14.5px}

/* minh hoạ ở khối liên hệ */
.ct .l .il-ct{position:absolute;right:-26px;bottom:-26px;width:50%;opacity:.45;z-index:0;pointer-events:none}


/* ===== TOPBAR LIÊN HỆ ===== */
.topbar{background:linear-gradient(90deg,#17267C,#2F54EB 62%,#3A9BF2);color:#fff;font-size:13px}
.tb-in{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:40px;padding-block:6px}
.tb-l{display:flex;align-items:center;gap:6px 22px;flex-wrap:wrap}
.tb-l a,.tb-l li{display:inline-flex;align-items:center;gap:7px;color:rgb(255 255 255/.92);font-weight:500;transition:color .25s}
.tb-l a:hover{color:#fff;text-decoration:underline}
.tb-r{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}
.tb-r .gift{width:26px;height:26px;display:grid;place-items:center;border-radius:var(--r);background:var(--amber);color:#3a2600;font-size:15px}
.tb-r .tag{padding:3px 10px;border-radius:var(--r);background:rgb(255 255 255/.16);font-weight:600;font-size:12.5px}
.tb-cta{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r);background:#fff;color:var(--blue);font-weight:700;transition:transform .4s var(--ease)}
.tb-cta:hover{transform:translateY(-1px)}

/* ===== TIÊU ĐỀ HAI TÔNG ===== */
.ac{font-style:normal;background:linear-gradient(90deg,var(--blue),var(--sky) 55%,var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent;padding-bottom:.06em}
.eyebrow{display:flex;align-items:center;gap:12px;margin-bottom:18px;font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--blue)}
.eyebrow::before{content:"";width:36px;height:2px;background:var(--blue);border-radius:2px}

/* ===== DẢI SỐ LỚN ===== */
.sband{position:relative;overflow:hidden;padding-block:34px;background:linear-gradient(120deg,#15227A,#2F54EB 58%,#3A9BF2);color:#fff}
.sband::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgb(255 255 255/.18) 1px,transparent 1.2px);background-size:22px 22px;mask-image:radial-gradient(520px 200px at 90% 0%,#000,transparent);-webkit-mask-image:radial-gradient(520px 200px at 90% 0%,#000,transparent)}
.sband::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;left:-120px;bottom:-260px;border:1px solid rgb(255 255 255/.2);box-shadow:0 0 0 46px rgb(255 255 255/.04)}
.sb-g{position:relative;z-index:1;display:grid;grid-template-columns:repeat(6,1fr);gap:0}
.sband .cn{background:transparent;border:0;border-radius:0;padding:6px 18px;border-left:1px solid rgb(255 255 255/.22);transition:transform .5s var(--ease)}
.sband .cn:first-child{border-left:0;padding-left:0}
.sband .cn:hover{background:transparent;transform:translateY(-3px)}
.sband .cn b{color:#fff;font-size:clamp(2.2rem,3.6vw,3.2rem);font-weight:700}
.sband .cn span{color:rgb(255 255 255/.86);font-size:13.5px;max-width:16ch;margin-top:6px}
.done{position:relative;z-index:1;display:flex;align-items:center;gap:8px 10px;flex-wrap:wrap;margin-top:14px;font-size:13.5px;color:var(--mut)}
.done a{padding:4px 11px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);color:var(--ink);font-weight:500;transition:border-color .3s,color .3s,transform .45s var(--ease)}
.done a:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}

/* ===== KHO ỨNG DỤNG: tiêu đề cột tô màu ===== */
.acol{padding:0 0 10px}
.acol>header{margin:0 0 8px;padding:15px 16px;border-bottom:0;background:linear-gradient(135deg,color-mix(in srgb,var(--c) 84%,#0b1740),color-mix(in srgb,var(--c) 62%,#0b1740));color:#fff;position:relative;overflow:hidden}
.acol>header::after{content:"";position:absolute;right:-26px;top:-30px;width:96px;height:96px;border-radius:50%;background:rgb(255 255 255/.14)}
.acol>header .it{background:rgb(255 255 255/.18);color:#fff;box-shadow:none}
.acol>header b{font-size:16.5px;color:#fff}
.acol>header small{color:rgb(255 255 255/.86)}
.acol .app{margin:0 8px;padding-left:8px}
.acol .app.hit{box-shadow:inset 3px 0 0 var(--c)}

/* ===== BANNER CỐ ĐỊNH BÊN TRÁI ===== */
.lban{position:fixed;left:16px;bottom:16px;z-index:200;width:300px;padding:18px 18px 16px;border-radius:var(--r2);background:linear-gradient(150deg,#14216F,#2F54EB 70%,#3A9BF2);color:#fff;box-shadow:0 30px 56px -22px rgb(20 33 111/.75);overflow:hidden;animation:lbin .9s var(--ease)}
.lban[hidden]{display:none}
.lban::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgb(255 255 255/.2) 1px,transparent 1.2px);background-size:18px 18px;mask-image:radial-gradient(240px 160px at 100% 0%,#000,transparent);-webkit-mask-image:radial-gradient(240px 160px at 100% 0%,#000,transparent)}
.lban>*{position:relative}
@keyframes lbin{from{opacity:0;transform:translateX(-40px)}}
.lb-x{position:absolute;right:8px;top:8px;width:26px;height:26px;border:0;border-radius:var(--r);background:rgb(255 255 255/.18);color:#fff;cursor:pointer;font-size:14px;transition:background-color .25s}
.lb-x:hover{background:rgb(255 255 255/.34)}
.lban small{display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:3px 8px;border-radius:var(--r);background:var(--amber);color:#3a2600}
.lban b{display:block;font-size:1.12rem;line-height:1.3;margin:10px 26px 6px 0}
.lban p{font-size:13.5px;color:rgb(255 255 255/.88);margin-bottom:14px;max-width:172px}
.lban .il{width:96px;position:absolute;right:10px;bottom:14px;opacity:.95}
.lban .btn{padding:8px 10px 8px 14px;font-size:13.5px}

/* ===== BẠN NÊN BẮT ĐẦU TỪ ĐÂU: công cụ lập lộ trình ===== */
.qz2{display:block}
.qh{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;padding:26px 30px 20px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,color-mix(in srgb,var(--blue) 5%,var(--surface)),var(--surface))}
.qh h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.qh p{margin-top:6px;font-size:14.5px;max-width:48ch}
.qsteps{display:flex;gap:0;align-items:center}
.qsteps li{display:flex;align-items:center;gap:9px;font-size:13.5px;font-weight:600;color:var(--mut2)}
.qsteps li+li::before{content:"";width:34px;height:2px;background:var(--line2);margin:0 10px;border-radius:2px;transition:background-color .4s}
.qsteps li.done2+li::before,.qsteps li.on+li::before{background:var(--blue)}
.qsteps .n{width:30px;height:30px;display:grid;place-items:center;border-radius:var(--r);border:1px solid var(--line2);background:var(--surface);font-size:16px;transition:all .4s var(--ease)}
.qsteps li.on{color:var(--ink)}
.qsteps li.on .n{background:var(--blue);border-color:var(--blue);color:#fff;transform:translateY(-2px)}
.qsteps li.done2{color:var(--blue)}
.qsteps li.done2 .n{background:var(--blue-s);border-color:var(--blue-m);color:var(--blue)}
.qb{padding:28px 30px 30px;min-height:300px}
.qq{font-size:1.3rem;font-weight:700;margin-bottom:6px;letter-spacing:-.02em}
.qsub{font-size:14.5px;color:var(--mut);margin-bottom:18px}
.qopts{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px}
.qo2{display:flex;gap:13px;align-items:center;padding:14px 15px;text-align:left;border:1px solid var(--line2);border-radius:var(--r2);background:var(--surface);cursor:pointer;transition:transform .5s var(--ease),border-color .3s,box-shadow .5s var(--ease),background-color .3s;animation:fadeup .6s var(--ease) backwards;animation-delay:calc(var(--k,0)*45ms)}
.qo2:hover{transform:translateY(-4px);border-color:var(--c);box-shadow:var(--sh);background:color-mix(in srgb,var(--c) 6%,var(--surface))}
.qo2:hover .it{background:var(--c);color:#fff}
.qo2 b{display:block;font-size:14.5px;line-height:1.3}.qo2 small{display:block;font-size:12.5px;color:var(--mut);line-height:1.4;margin-top:1px}
.qback{margin-top:18px;font-size:13.5px}
.qres2{display:grid;grid-template-columns:1.3fr .7fr;gap:26px;align-items:start}
.qres2 h3{font-size:1.35rem;margin-bottom:4px}
.tl{position:relative;display:grid;gap:22px;margin-top:20px;padding-left:44px}
.tl::before{content:"";position:absolute;left:15px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--blue),var(--cyan));border-radius:2px;opacity:.5}
.tlp{position:relative;animation:fadeup .7s var(--ease) backwards;animation-delay:calc(var(--k,0)*140ms)}
.tlp .dotn{position:absolute;left:-44px;top:0;width:32px;height:32px;display:grid;place-items:center;border-radius:var(--r);background:var(--c);color:#fff;font-weight:700;font-size:14px;box-shadow:0 0 0 4px var(--surface)}
.tlp b{display:block;font-size:15.5px}.tlp p{font-size:14px;margin:2px 0 8px}
.qchips{display:flex;flex-wrap:wrap;gap:6px}
.qchip{display:inline-flex;gap:7px;align-items:center;padding:5px 10px 5px 7px;font-size:13px;font-weight:500;border-radius:var(--r);background:color-mix(in srgb,var(--c) 9%,var(--surface));border:1px solid color-mix(in srgb,var(--c) 26%,var(--line))}
.qchip i{color:var(--c);font-size:16px}
.pkc{position:sticky;top:96px;padding:22px;border-radius:var(--r2);background:linear-gradient(150deg,#14216F,#2F54EB 72%,#3A9BF2);color:#fff;overflow:hidden;box-shadow:0 30px 50px -26px rgb(47 84 235/.8)}
.pkc::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgb(255 255 255/.18) 1px,transparent 1.2px);background-size:18px 18px;mask-image:radial-gradient(260px 200px at 100% 0%,#000,transparent);-webkit-mask-image:radial-gradient(260px 200px at 100% 0%,#000,transparent)}
.pkc>*{position:relative}
.pkc small{display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:3px 8px;border-radius:var(--r);background:var(--amber);color:#3a2600}
.pkc h4{font-size:1.5rem;margin:10px 0 4px;color:#fff}
.pkc p{font-size:14px;color:rgb(255 255 255/.88)}
.pkc ul{display:grid;gap:8px;margin:14px 0 18px;font-size:14px}
.pkc li{display:flex;gap:8px;align-items:flex-start}
.pkc li .ph{color:#fff;margin-top:3px}
.pkc .btn{width:100%;justify-content:space-between}
.pkc .again{display:block;margin-top:12px;text-align:center;font-size:13.5px;color:rgb(255 255 255/.86);background:none;border:0;cursor:pointer;width:100%}
.pkc .again:hover{text-decoration:underline}
.qnote{margin-top:20px;font-size:13px;color:var(--mut);padding:10px 12px;border-left:3px solid var(--blue);background:var(--blue-s);border-radius:var(--r)}

/* ===== FOOTER: từ khoá, danh mục ===== */
.t2b{padding-top:40px}
.kwg{display:grid;grid-template-columns:1.5fr 1fr;gap:34px;padding:26px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2)}
.kwg h4{font-size:14px;margin-bottom:14px}
.kws{display:flex;flex-wrap:wrap;gap:7px}
.kws a{padding:5px 11px;font-size:13px;border-radius:var(--r);background:var(--soft);color:var(--mut);transition:background-color .3s,color .3s,transform .45s var(--ease)}
.kws a:hover{background:var(--blue);color:#fff;transform:translateY(-2px)}
.kws a:nth-child(5n+2):hover{background:var(--sky)}.kws a:nth-child(5n+3):hover{background:var(--cyan)}.kws a:nth-child(5n+4):hover{background:var(--indigo)}.kws a:nth-child(5n+5):hover{background:var(--teal)}
.rec2{display:grid;gap:2px}
.rec2 a{display:flex;gap:11px;align-items:flex-start;padding:9px 6px;border-radius:var(--r);transition:background-color .3s}
.rec2 a:hover{background:var(--blue-s)}
.rec2 b{display:block;font-size:14px;line-height:1.35}.rec2 small{font-size:12.5px;color:var(--mut)}
.rec2 .it{width:30px;height:30px;font-size:16px}
.fcat{margin-top:6px;border-top:1px solid var(--line)}
.fcat .row{display:grid;grid-template-columns:130px 1fr;gap:18px;padding:12px 0;border-bottom:1px solid var(--line);font-size:13.5px}
.fcat .row>b{display:flex;gap:8px;align-items:center;color:var(--c);font-size:14px}
.fcat .row>span{line-height:1.9;color:var(--mut)}
.fcat .row a{color:var(--mut);transition:color .25s}.fcat .row a:hover{color:var(--blue)}
.fcat .row a+a::before{content:"/";margin:0 8px;color:var(--line2)}

@media (max-width:1100px){.sb-g{grid-template-columns:repeat(3,1fr);row-gap:24px}.sband .cn:nth-child(4){border-left:0;padding-left:0}.qres2{grid-template-columns:1fr}.pkc{position:static}.kwg{grid-template-columns:1fr}}
@media (max-width:1180px){.lban{display:none!important}}
@media (max-width:900px){.tb-l li.tb-loc,.tb-r .tag{display:none}.tb-l{gap:6px 14px}.qsteps li b{display:none}}
@media (max-width:700px){.sb-g{grid-template-columns:1fr 1fr}.sband .cn:nth-child(odd){border-left:0;padding-left:0}.qb{padding:22px 18px}.qh{padding:22px 18px}.fcat .row{grid-template-columns:1fr;gap:4px}.tb-l a span{display:none}.tb-l a{font-size:0}.tb-l a i{font-size:18px}}


/* ===== TÌM TÊN MIỀN + HOSTING ===== */
.dm{position:relative;z-index:3;margin-top:-34px;padding-block:0 30px}
.dmx{display:grid;grid-template-columns:1.25fr .75fr}
.dml{padding:24px 26px 22px}
.dml h2{font-size:clamp(1.25rem,2.1vw,1.6rem);display:flex;align-items:center;gap:12px}
.dml h2 .it{width:34px;height:34px}
.dml>p{margin:6px 0 14px;font-size:14px}
.dmf{display:flex;gap:8px;padding:0;background:transparent;align-content:normal}
.dmf .inw{position:relative;flex:1}
.dmf .inw>i{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--mut2);font-size:18px}
.dmf input{padding:13px 14px 13px 40px;font-size:15px}
.dmf .btn{padding:12px 14px 12px 18px}
.dmt{display:flex;flex-wrap:wrap;gap:6px 8px;margin-top:11px;font-size:12.5px;color:var(--mut)}
.dmt span{padding:3px 8px;border-radius:var(--r);background:var(--soft)}
.dmt .vn{background:color-mix(in srgb,var(--blue) 11%,var(--surface));color:var(--blue);font-weight:600}
.dmr{display:grid;gap:6px;margin-top:14px}
.dmr:empty{display:none}
.dmi{display:grid;grid-template-columns:24px 1fr auto auto;gap:12px;align-items:center;padding:9px 12px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);font-size:14px;animation:fadeup .5s var(--ease) backwards;animation-delay:calc(var(--k,0)*60ms)}
.dmi b{font-weight:600;word-break:break-all}
.dmi .st2{font-size:12.5px;color:var(--mut)}
.dmi.free{border-color:var(--blue-m);background:var(--blue-s)}
.dmi.free .st2{color:var(--blue);font-weight:600}
.dmi.taken b,.dmi.taken .st2{color:var(--mut2)}
.dmi.taken b{text-decoration:line-through;text-decoration-color:var(--line2)}
.dmi .ph{font-size:18px}
.dmi.free .ph{color:var(--blue)}.dmi.taken .ph{color:var(--mut2)}
.dmi button{padding:5px 10px;font-size:13px;font-weight:600;border:1px solid var(--blue);border-radius:var(--r);background:var(--surface);color:var(--blue);cursor:pointer;transition:background-color .25s,color .25s}
.dmi button:hover{background:var(--blue);color:#fff}
.dmsp{width:16px;height:16px;border-radius:50%;border:2px solid var(--line2);border-top-color:var(--blue);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.dmn{margin-top:10px;font-size:12.5px;color:var(--mut)}
.dmr-r{padding:22px 24px;background:color-mix(in srgb,var(--blue) 4.5%,var(--surface));border-left:1px solid var(--line);display:grid;gap:6px;align-content:start}
.dmr-r>b{font-size:14.5px}
.hsp{display:flex;gap:12px;align-items:center;padding:10px 4px;border-bottom:1px dashed var(--line);transition:padding-left .45s var(--ease)}
.hsp:last-of-type{border-bottom:0}
.hsp:hover{padding-left:10px}
.hsp b{display:block;font-size:14.5px;line-height:1.3}.hsp small{display:block;font-size:12.5px;color:var(--mut);line-height:1.4}
.hsp a{margin-left:auto;font-size:13px;font-weight:600;color:var(--blue);white-space:nowrap}
.hsp a:hover{text-decoration:underline}
.hsp .it{width:32px;height:32px;font-size:17px}
@media (max-width:1000px){.dm{margin-top:-18px}.dmx{grid-template-columns:1fr}.dmr-r{border-left:0;border-top:1px solid var(--line)}}
@media (max-width:700px){.dmf{flex-direction:column}.dmi{grid-template-columns:24px 1fr auto}.dmi .st2{grid-column:2}.dmi button{grid-column:3;grid-row:1 / span 2}.dml{padding:20px 18px}}


/* ===== GIÁ: xây dựng một lần + gia hạn hằng năm ===== */
.bld{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.bd3{position:relative;display:flex;flex-direction:column;gap:14px;padding:24px 22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);transition:transform .55s var(--ease),box-shadow .55s var(--ease),border-color .3s}
.bd3:hover{transform:translateY(-5px);box-shadow:var(--sh);border-color:var(--c)}
.bd3 .hd{display:flex;gap:11px;align-items:center}.bd3 h3{font-size:1.2rem}
.bd3 .tg{min-height:26px;display:flex;justify-content:space-between;align-items:center;font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.bd3 .for{font-size:14px;color:var(--mut);line-height:1.45;min-height:2.9em}
.pv{display:flex;flex-wrap:nowrap;align-items:baseline;gap:7px;padding:14px 0 0;border-top:1px solid var(--line);white-space:nowrap;font-variant-numeric:tabular-nums}
.pv .pn{font-size:2.5rem;font-weight:700;letter-spacing:-.04em;line-height:1;color:color-mix(in srgb,var(--c) 78%,var(--ink))}
.pv .pu{font-size:1rem;font-weight:500;color:var(--mut)}
.pv.pt .pn{font-size:1.75rem;letter-spacing:-.02em}
.pn-s{display:block;margin-top:-6px;font-size:13px;color:var(--mut)}
.bd3 ul{align-content:start}
.bd3.cus .y1{background:var(--surface)}
.bd3.cus{background:var(--soft)}
.bd3 ul{display:grid;gap:9px;font-size:14.5px;flex:1;padding-top:14px;border-top:1px solid var(--line)}
.bd3 li{display:flex;gap:9px;align-items:flex-start;line-height:1.45}.bd3 li .ph{color:var(--c);flex:none;margin-top:3px}
.bd3 .y1{font-size:13px;padding:8px 10px;border-radius:var(--r);background:color-mix(in srgb,var(--c) 10%,var(--surface));color:var(--ink)}
.bd3.rec{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 30px 50px -26px rgb(47 84 235/.7)}
.bd3.rec h3,.bd3.rec .pv .pn{color:#fff}.bd3.rec .pv .pu,.bd3.rec .pn-s,.bd3.rec .tg,.bd3.rec .for,.bd3.rec li{color:rgb(255 255 255/.88)}.bd3.rec .pv{border-color:rgb(255 255 255/.25)}
.bd3.rec ul{border-color:rgb(255 255 255/.25)}.bd3.rec li .ph{color:#fff}
.bd3.rec .it{background:rgb(255 255 255/.16);color:#fff;box-shadow:none}
.bd3.rec .y1{background:rgb(255 255 255/.14);color:#fff}
.bd3.rec .rb{position:static;font-size:12px;font-weight:700;background:var(--amber);color:#3a2600;padding:3px 9px;border-radius:var(--r)}
.rn{display:grid;grid-template-columns:1.1fr .9fr;gap:10px;margin-top:10px}
.rnt{width:100%;border-collapse:collapse;font-size:14px}
.rnt th,.rnt td{padding:11px 12px;text-align:right;border-bottom:1px solid var(--line)}
.rnt th:first-child,.rnt td:first-child{text-align:left}
.rnt th{font-size:12.5px;font-weight:600;color:var(--mut);background:var(--soft)}
.rnt td:first-child{font-weight:600}
.rnt .tot td{font-weight:700;background:var(--blue-s);border-bottom:0}
.rnt tr:hover td{background:color-mix(in srgb,var(--blue) 4%,var(--surface))}.rnt .tot:hover td{background:var(--blue-s)}
.rnn{padding:12px 14px;font-size:13px;color:var(--mut);border-top:1px solid var(--line)}
.myr{display:grid;gap:8px}
.myr>div{display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:center;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.myr b{display:block;font-size:14.5px}.myr small{font-size:13px;color:var(--mut)}
.myr .gf{width:44px;height:44px;display:grid;place-items:center;border-radius:var(--r);background:var(--blue-s);color:var(--blue);font-weight:700;font-size:15px;box-shadow:inset 0 0 0 1px var(--blue-m)}
.opt{margin-top:10px;display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;padding:16px 20px;border:1px dashed var(--line2);border-radius:var(--r2)}
.opt b{font-size:15px}.opt p{font-size:14px;max-width:72ch}

/* ===== GIÁ: một khối liên kết (3 bước) ===== */
.pkg{margin-top:6px}
.pks{padding:28px 26px;border-top:1px solid var(--line)}
.pks:first-child{border-top:0}
.pks1{background:color-mix(in srgb,var(--blue) 3%,var(--surface))}
.pkh{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.pkh>div{flex:1;min-width:0}
.pkh h3{font-size:1.2rem}
.pkh p{font-size:14px;color:var(--mut);margin-top:3px}
.pkn{flex:none;width:34px;height:34px;display:grid;place-items:center;border-radius:var(--r);background:var(--blue);color:#fff;font-weight:700;font-size:15px}
.pkt{flex:none;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:5px 11px;border-radius:var(--r);background:var(--blue-s);color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue-m)}
.pk2{display:grid;grid-template-columns:1.2fr .8fr;gap:0;border:1px solid var(--line);border-radius:var(--r2);overflow:hidden;background:var(--surface)}
.pk2a{border-right:1px solid var(--line)}
.pk2b{padding:20px}
.pk2b h4,.pk3 h4{font-size:12.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--mut);margin-bottom:14px}
.pk2 .rnt th:first-child{background:var(--soft)}
.pk2b .rnn{padding:12px 0 0;border:0}
.pk3{display:grid;grid-template-columns:1.1fr 1fr .8fr;gap:0;border:1px solid var(--line);border-radius:var(--r2);background:var(--surface);overflow:hidden}
.pk3>div{padding:20px}
.pk3>div+div{border-left:1px solid var(--line)}
.pkp{font-size:14px;color:var(--mut);margin-bottom:14px}
.pkf{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:20px 26px;border-top:1px solid var(--line);background:var(--blue-s)}
.pkf p{font-size:14.5px;max-width:70ch}
.pkb{display:flex;gap:8px;flex-wrap:wrap}
@media (max-width:1000px){.pk2,.pk3{grid-template-columns:1fr}.pk2a{border-right:0;border-bottom:1px solid var(--line)}.pk3>div+div{border-left:0;border-top:1px solid var(--line)}}
@media (max-width:680px){.pks{padding:22px 14px}.pkh{flex-wrap:wrap}.pkt{order:3}.pkf{padding:18px 14px}}
@media (max-width:1100px){.bld{grid-template-columns:repeat(2,1fr)}}
@media (max-width:1000px){.rn{grid-template-columns:1fr}}
@media (max-width:680px){.bld{grid-template-columns:1fr}.bd3 .for{min-height:0}}

/* ===== RESPONSIVE ===== */
@media (max-width:1280px){.nav-tel{display:none}}
@media (max-width:1100px){
  .mg-in{grid-template-columns:1fr}.mg-feat{display:none}
  .appc{grid-template-columns:repeat(2,1fr)}
  .acol:nth-child(2){border-right:0}.acol:nth-child(n+3){border-top:1px solid var(--line)}
  .acad{grid-template-columns:1fr}.arts{grid-template-columns:1fr 1fr}
  .bigw .case{grid-template-columns:1fr}.bigw .cwrap{border-right:0}.bigw .cs{min-height:280px}
}
@media (max-width:1000px){
  .menu{display:none}
  .burger{display:grid}
  .nav-tel{display:none}
  .menu.open{display:flex;flex-direction:column;position:absolute;top:calc(100% + 8px);left:0;right:0;height:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);padding:8px;margin:0;box-shadow:var(--sh)}
  .menu.open .mi{display:block}.menu.open .mg{display:none}
  .navbar .btn{margin-left:auto}
  .hero-g,.eco-g,.ai-g,.fq,.quiz,.ct,.ex{grid-template-columns:1fr}
  .hero h1{max-width:14ch}
  .devs{max-width:560px;width:100%;margin-inline:auto}
  .eco-l{position:static}
  .ng,.cases,.plans,.tpls{grid-template-columns:1fr 1fr}
  .pr,.pledge{grid-template-columns:1fr 1fr;row-gap:28px}
  .pr::before{display:none}
  .sr{grid-template-columns:44px 1fr;row-gap:12px}
  .sr .sc,.sr .end{grid-column:2}.sr .end{justify-items:start;text-align:left}
  .fgrid{grid-template-columns:repeat(2,1fr)}.fbrand{grid-column:1/-1}
  .fbot{padding-right:0;padding-bottom:76px}
  .adv{grid-template-columns:1fr 1fr}.advo{grid-column:1/-1}
}
@media (max-width:700px){
  .row2,.qo,.fcs,.layer .fnl{grid-template-columns:1fr}
  .layer .fnl{padding-left:4px}
  .layer summary{grid-template-columns:28px 1fr auto 22px}.layer summary .it{display:none}
  .ng,.cases,.plans,.tpls,.pr,.pledge,.appc,.arts,.fmts{grid-template-columns:1fr}
  .acol{border-right:0;border-top:1px solid var(--line)}.acol:first-child{border-top:0}
  .hero .cta .btn-p,.hero .cta .btn-g{flex:1 1 100%;justify-content:center}
  .les{grid-template-columns:36px 1fr}.les .fm{grid-column:2;width:fit-content}
  .fc{display:none}
  .navbar .btn{display:none}
  .ast-fab span:not(.ic){display:none}.ast-fab{padding:9px}
  .adv{grid-template-columns:1fr}.adv select{min-width:0;width:100%}
}
/* Chế độ NHẸ (hệ điều hành bật giảm chuyển động, hoặc bạn chọn): giữ hiện dần và hiệu ứng rê chuột, tắt chuyển động tự chạy và chuyển động lớn */
html[data-motion="calm"] .fc,html[data-motion="calm"] .flowline .sep,html[data-motion="calm"] .prog,html[data-motion="calm"] .ping::after{animation:none!important}
html[data-motion="calm"] .rv.in{animation-name:rvfade}
html[data-motion="calm"] .hero h1 .ln>span{transform:none;animation:none}
html[data-motion="calm"] .hero .sub,html[data-motion="calm"] .hero .cta,html[data-motion="calm"] .hero .pts{opacity:1;animation:none}
html[data-motion="calm"] .m{opacity:1;transform:none}
html[data-motion="calm"] .cs img{transition-duration:.01ms}
html[data-motion="calm"] .dv,html[data-motion="calm"] .fc{transform:none}