/* sites.com.vn */
:root{--nen:#f6f5f1;--the:#fff;--muc:#0f1222;--mo:#5d6275;--vien:#e4e2da;--nhan:#2f4bff;--nhan-dam:#1f36d6;--la:#0a7a45;--zalo:#0068ff;--bo:16px;--bong:0 1px 2px rgba(15,18,34,.05),0 12px 32px rgba(15,18,34,.08)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--nen);color:var(--muc);font:16px/1.6 "Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block;height:auto}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.15;letter-spacing:-.02em}
p{margin:0}
.khung{max-width:1160px;margin:0 auto;padding:0 20px}
.an{display:none!important}
.bo-qua{position:absolute;left:-999px;top:8px;background:var(--muc);color:#fff;padding:10px 14px;border-radius:10px;z-index:99}
.bo-qua:focus{left:8px}
:focus-visible{outline:3px solid #9fb0ff;outline-offset:2px}
.nhan{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--nhan)}
.mo{color:var(--mo)}.mo.nho{font-size:13px}

/* Nút */
.nt{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:12px;border:1.5px solid var(--muc);background:var(--muc);color:#fff;font-weight:700;font-size:14.5px;letter-spacing:.02em;cursor:pointer;transition:transform .08s,background .15s,border-color .15s,color .15s;white-space:nowrap}
.nt:hover{background:var(--nhan);border-color:var(--nhan)}
.nt:active{transform:translateY(1px)}
.nt.vien{background:transparent;color:var(--muc)}
.nt.vien:hover{background:var(--muc);color:#fff;border-color:var(--muc)}
.nt.zalo{background:var(--zalo);border-color:var(--zalo)}
.nt.zalo:hover{background:#0054cc;border-color:#0054cc}
.nt.lon{min-height:54px;padding:0 26px;font-size:15.5px}
.nt.nho{min-height:40px;padding:0 14px;font-size:13px}
.nt.rong{width:100%}
.hang{display:flex;gap:10px;flex-wrap:wrap}

/* Đầu trang */
.dau{position:sticky;top:0;z-index:30;background:rgba(246,245,241,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--vien)}
.dau .khung{display:flex;align-items:center;gap:12px;height:68px}
.nut-menu{width:44px;height:44px;border:1.5px solid var(--vien);border-radius:12px;background:var(--the);display:grid;place-items:center;cursor:pointer;flex:none}
.nut-menu span,.nut-menu span:before,.nut-menu span:after{display:block;width:18px;height:2px;background:var(--muc);border-radius:2px;position:relative;content:""}
.nut-menu span:before{position:absolute;top:-6px}.nut-menu span:after{position:absolute;top:6px}
.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-.02em}
.logo svg{width:34px;height:34px}
.logo i{font-style:normal;color:var(--mo);font-weight:600}
.logo.sang{color:#fff}.logo.sang i{color:#a9afc6}
.logo.sang svg rect:first-child{fill:#fff}.logo.sang svg rect:nth-child(2),.logo.sang svg path:nth-of-type(1){stroke:#0f1222}
.menu{margin-left:auto;display:flex;gap:4px}
.menu a{padding:10px 12px;border-radius:10px;font-weight:600;font-size:14.5px}
.menu a:hover{background:#ebe9e1}
.dau .nt{margin-left:6px}
@media(max-width:860px){.menu{display:none}.dau .nt{margin-left:auto}}
@media(max-width:420px){.logo b{font-size:17px}.dau .nt{padding:0 10px}}

/* Ngăn kéo */
.man{position:fixed;inset:0;background:rgba(15,18,34,.5);z-index:40;opacity:0;pointer-events:none;transition:opacity .2s}
.ngan{position:fixed;top:0;left:0;bottom:0;width:min(330px,88vw);background:var(--the);z-index:41;transform:translateX(-102%);transition:transform .22s;overflow:auto;padding:0 0 24px}
body.mo-ngan .man{opacity:1;pointer-events:auto}body.mo-ngan .ngan{transform:none}
.ngan-dau{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid var(--vien);letter-spacing:.1em}
.ngan-dau button{width:38px;height:38px;border:0;background:var(--nen);border-radius:10px;cursor:pointer}
.ngan h3{margin:18px 18px 6px;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--mo)}
.ngan a{display:flex;align-items:center;gap:10px;padding:12px 18px;font-weight:600}
.ngan a:hover{background:var(--nen)}
.ngan a em{margin-left:auto;font-style:normal;font-weight:700;color:var(--nhan);font-size:14px}
.cai-app{margin:10px 18px 0;width:calc(100% - 36px);min-height:46px;border:1.5px dashed var(--nhan);background:#eef1ff;color:var(--nhan-dam);border-radius:12px;font-weight:700;cursor:pointer}
.luot{margin:0 18px;border:1px solid var(--vien);border-radius:12px;overflow:hidden}
.luot div{display:flex;justify-content:space-between;padding:10px 14px;font-size:14.5px}
.luot div+div{border-top:1px solid var(--vien)}
.luot span{color:var(--mo)}

/* Hero */
.hero{padding:56px 0 64px}
.hero-luoi{display:grid;grid-template-columns:1.15fr 1fr;gap:44px;align-items:center}
.hero h1{font-size:clamp(36px,4.6vw,58px);font-weight:800;letter-spacing:-.04em;line-height:1.02;margin:14px 0 20px}
.hero h1 em{font-style:normal;color:var(--nhan)}
.dan{font-size:18px;color:#3b4055;max-width:36em}
.hero .hang{margin:28px 0 22px}
.tin{list-style:none;margin:0;padding:0;display:flex;gap:8px 20px;flex-wrap:wrap;font-size:14.5px;font-weight:600;color:#3b4055}
.tin li:before{content:"✓";color:var(--la);font-weight:800;margin-right:7px}
.khung-web{display:block;background:var(--the);border:1px solid var(--vien);border-radius:var(--bo);overflow:hidden;box-shadow:var(--bong);transition:transform .2s,box-shadow .2s}
a.khung-web:hover{transform:translateY(-4px);box-shadow:0 2px 4px rgba(15,18,34,.06),0 24px 48px rgba(15,18,34,.14)}
.thanh-web{display:flex;align-items:center;gap:6px;padding:10px 12px;background:#efede6;border-bottom:1px solid var(--vien)}
.thanh-web i{width:10px;height:10px;border-radius:50%;background:#cfccc0}
.thanh-web span{margin-left:10px;flex:1;max-width:260px;background:var(--the);border-radius:7px;font-size:12px;color:var(--mo);padding:3px 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.khung-web img{width:100%;aspect-ratio:16/10;object-fit:cover;object-position:top}
.hero .khung-web{transform:rotate(1.2deg)}
.hero a.khung-web:hover{transform:rotate(0) translateY(-4px)}
@media(max-width:900px){.hero h1{font-size:clamp(36px,9vw,54px)}.hero{padding:32px 0 44px}.hero-luoi{grid-template-columns:1fr;gap:30px}.hero .khung-web{transform:none}.dan{font-size:16.5px}}
@media(max-width:480px){.hero .hang .nt{width:100%}}

/* Mục */
.muc{padding:64px 20px}
.khung .khung.muc,.nen-dam .muc{padding-left:20px;padding-right:20px}
.muc-dau{max-width:680px;margin:0 auto 36px;text-align:center}
.muc-dau.trai{margin-left:0;text-align:left}
.muc-dau h1,.muc-dau h2{font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:-.03em;margin:10px 0 12px}
.muc-dau p:not(.nhan){color:var(--mo);font-size:17px}
.hep{max-width:820px}
@media(max-width:600px){.muc{padding-top:44px;padding-bottom:44px}}

/* Thẻ gói */
.luoi-goi{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.goi{background:var(--the);border:1px solid var(--vien);border-radius:22px;padding:14px;display:flex;flex-direction:column;gap:6px;transition:box-shadow .2s}
.goi:hover{box-shadow:var(--bong)}
.goi .khung-web{box-shadow:none;border-radius:12px}
.goi a.khung-web:hover{transform:none;box-shadow:none}
.goi-tt{padding:14px 8px 8px;display:flex;flex-direction:column;gap:12px;flex:1}
.goi-dau{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.goi h3{font-size:22px;font-weight:800}
.goi h3 a:hover{color:var(--nhan)}
.gia{font-size:20px;font-weight:800;color:var(--nhan);white-space:nowrap}
.goi p{color:var(--mo)}
.the-nho{list-style:none;margin:0;padding:0;display:flex;gap:6px;flex-wrap:wrap}
.the-nho li{font-size:12.5px;font-weight:600;background:var(--nen);border:1px solid var(--vien);border-radius:99px;padding:3px 10px}
.goi .hang{margin-top:auto}
.goi .hang .nt{flex:1}
.trong{grid-column:1/-1;text-align:center;color:var(--mo);border:1px dashed var(--vien);border-radius:var(--bo);padding:40px 16px}
@media(max-width:820px){.luoi-goi{grid-template-columns:1fr;gap:20px}}
.sap{margin-top:36px;background:var(--the);border:1px solid var(--vien);border-radius:22px;padding:24px}
.sap h3{font-size:20px}.sap>p{color:var(--mo);margin:4px 0 12px}
.sap ul{list-style:none;margin:0;padding:0}
.sap li{display:flex;align-items:center;gap:14px;justify-content:space-between;padding:12px 0;border-top:1px solid var(--vien)}
.sap li b{display:block}.sap li span{color:var(--mo);font-size:14.5px}
@media(max-width:560px){.sap li{flex-direction:column;align-items:flex-start;gap:8px}}

/* Phần nền đậm + bước */
.nen-dam{background:var(--muc);color:#fff}
.nen-dam .nhan{color:#9fb0ff}
.buoc{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.buoc li{border:1px solid rgba(255,255,255,.14);border-radius:var(--bo);padding:24px}
.buoc i{font-style:normal;display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--nhan);color:#fff;font-weight:800;margin-bottom:16px}
.buoc b{display:block;font-size:18px;margin-bottom:6px}
.buoc p{color:#b9bdd0;font-size:15px}
.buoc.doc{grid-template-columns:1fr;gap:10px}
.buoc.doc li{border-color:var(--vien);background:var(--the);display:grid;grid-template-columns:40px 1fr;gap:2px 16px;padding:18px}
.buoc.doc i{grid-row:1/3;margin:0}.buoc.doc p{color:var(--mo)}
@media(max-width:820px){.buoc{grid-template-columns:1fr}}

.o-luoi{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--vien);border:1px solid var(--vien);border-radius:22px;overflow:hidden}
.o-luoi div{background:var(--the);padding:26px}
.o-luoi h3{font-size:18px;margin-bottom:8px}
.o-luoi p{color:var(--mo);font-size:15px}
@media(max-width:820px){.o-luoi{grid-template-columns:1fr}}
@media(min-width:561px) and (max-width:820px){.o-luoi{grid-template-columns:repeat(2,1fr)}}
.can-biet{margin-top:28px;background:#fff8e6;border:1px solid #f0dfae;border-radius:var(--bo);padding:22px 24px}
.can-biet h3{font-size:17px;margin-bottom:8px}
.can-biet ul{margin:0;padding-left:20px;color:#4a4020}
.can-biet li{margin:6px 0}

details{background:var(--the);border:1px solid var(--vien);border-radius:14px;margin-bottom:10px}
summary{cursor:pointer;padding:18px 48px 18px 20px;font-weight:700;list-style:none;position:relative}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;font-weight:500;color:var(--nhan)}
details[open] summary:after{content:"–"}
details p{padding:0 20px 18px;color:#3b4055}

.chot{background:var(--nhan);color:#fff;border-radius:26px;padding:40px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:72px}
.chot h2{font-size:clamp(24px,3.4vw,32px);font-weight:800;margin-bottom:6px}
.chot p{opacity:.92}
.chot .nt{background:#fff;color:var(--muc);border-color:#fff}
.chot .nt:hover{background:var(--muc);color:#fff;border-color:var(--muc)}
.chot.nho{margin:40px 0 0;padding:28px;border-radius:20px}
@media(max-width:600px){.chot{padding:28px 22px}.chot .nt{width:100%}}

/* Trang gói */
.vun{font-size:14px;color:var(--mo);padding:22px 0 0}
.vun a:hover{color:var(--nhan)}
.ct{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:44px;padding:14px 0 30px;align-items:start}
.ct h1{font-size:clamp(32px,5vw,50px);font-weight:800;letter-spacing:-.035em;margin:6px 0 14px}
.ct h2{font-size:24px;font-weight:800;margin:40px 0 16px}
.bo-anh{margin-top:26px}
.chu-thich{font-size:14px;color:var(--mo);margin:10px 2px 12px;min-height:1.6em}
.anh-nho{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.anh-nho button{padding:0;border:2px solid var(--vien);border-radius:10px;overflow:hidden;background:var(--the);cursor:pointer}
.anh-nho button.dang{border-color:var(--nhan)}
.anh-nho img{width:100%;aspect-ratio:16/10;object-fit:cover;object-position:top}
.tich{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.tich li{padding-left:30px;position:relative}
.tich li:before{content:"✓";position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:50%;background:#dff5e8;color:var(--la);font-weight:800;font-size:12px;display:grid;place-items:center}
.tich.nho{font-size:14.5px;gap:8px;margin:6px 0}
.ct-phai{position:sticky;top:88px}
.hop-mua{background:var(--the);border:1px solid var(--vien);border-radius:22px;padding:24px;display:grid;gap:12px;box-shadow:var(--bong)}
.huy{justify-self:start;font-size:11.5px;font-weight:800;letter-spacing:.08em;background:#eef1ff;color:var(--nhan-dam);border-radius:99px;padding:4px 10px}
.gia-lon{font-size:42px;font-weight:800;letter-spacing:-.03em;line-height:1}
.hop-voi{font-size:14.5px;border-top:1px solid var(--vien);padding-top:12px}
.thanh-mua{display:none}
@media(max-width:900px){.ct{grid-template-columns:1fr;gap:24px}.ct-phai{position:static}
  .thanh-mua{display:flex;align-items:center;gap:12px;position:fixed;left:0;right:0;bottom:0;z-index:25;background:var(--the);border-top:1px solid var(--vien);padding:10px 16px calc(10px + env(safe-area-inset-bottom))}.thanh-mua b{font-size:19px;white-space:nowrap}.thanh-mua .nt{flex:1}body:has(.thanh-mua){padding-bottom:70px}}

/* Bài viết */
.bai{max-width:760px;padding-bottom:20px}
.bai h1{font-size:clamp(30px,4.6vw,44px);font-weight:800;letter-spacing:-.03em;margin:10px 0 8px}
.bai>p,.bai li{font-size:17px;color:#2a2f43}
.bai>p{margin:14px 0}
.bai h2{font-size:23px;font-weight:800;margin:34px 0 10px}
.bai ul,.bai ol{padding-left:22px}.bai li{margin:7px 0}
.bai a:not(.nt){color:var(--nhan);text-decoration:underline;text-underline-offset:3px}
code{background:#eceae2;padding:1px 6px;border-radius:6px;font-size:.9em}
.ds-bai{display:grid;gap:14px}
.ds-bai a{display:block;background:var(--the);border:1px solid var(--vien);border-radius:var(--bo);padding:22px;transition:box-shadow .2s,border-color .2s}
.ds-bai a:hover{box-shadow:var(--bong);border-color:var(--nhan)}
.ds-bai h2{font-size:21px;margin-bottom:6px}.ds-bai p{color:var(--mo)}.ds-bai span{display:inline-block;margin-top:10px;font-weight:700;color:var(--nhan)}
.loi{padding:90px 20px;text-align:center}.loi h1{font-size:clamp(30px,5vw,46px);margin:10px 0}.loi p{margin:10px 0 20px;color:var(--mo)}

/* Chân trang */
.chan{background:var(--muc);color:#c4c8d8;padding:48px 0 30px;font-size:14.5px}
.chan-luoi{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:32px}
.chan-luoi p{margin-top:12px;max-width:30em}
.chan h4{color:#fff;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:10px}
.chan-luoi a:not(.logo){display:block;padding:5px 0}
.chan a:hover{color:#fff}
.chan-duoi{border-top:1px solid rgba(255,255,255,.14);margin-top:30px;padding-top:20px;display:grid;gap:6px;font-size:13.5px}
.chan-duoi a{color:#9fb0ff}
@media(max-width:720px){.chan-luoi{grid-template-columns:1fr 1fr}.chan-luoi>div:first-child{grid-column:1/-1}}

/* Hộp Zalo */
.hop{position:fixed;inset:0;z-index:60;background:rgba(15,18,34,.6);display:grid;place-items:center;padding:16px}
.hop[hidden]{display:none}
.hop-than{background:var(--the);border-radius:22px;padding:28px 24px 22px;width:min(400px,100%);position:relative;display:grid;gap:12px}
.hop-than h3{font-size:22px;padding-right:36px}
.hop-than>p{color:var(--mo);font-size:15px}
.hop-than input[type=tel]{height:54px;border:1.5px solid var(--vien);border-radius:12px;padding:0 16px;font-size:18px;width:100%;outline:none}
.hop-than input[type=tel]:focus{border-color:var(--zalo)}
.hop-than .nt{min-height:54px;font-size:15.5px}
.hop-dong{position:absolute;right:14px;top:14px;width:36px;height:36px;border:0;border-radius:10px;background:var(--nen);cursor:pointer}
.bay{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.hop-kq{min-height:1.4em;font-weight:600}.hop-kq.ok{color:var(--la)}.hop-kq.loi2{color:#b42318}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}