/* AK NESTING PRO — giao diện website (27/09/2026)
   Nền trắng, điểm nhấn đỏ AK, phần đầu trang và chân trang tối. */
:root{
  --do:#d7141f; --do-dam:#b00f18; --do-nhat:#fdecec;
  --xanh:#1565d8; --xanh-dam:#0f4fb0;
  --chu:#15171c; --chu2:#2d323b; --mo:#5b6270; --mo2:#8a909c;
  --nen:#ffffff; --nen2:#f5f6f8; --nen3:#eef0f3; --vien:#e3e6eb;
  --toi:#0f1115; --toi2:#171a20; --toi-vien:#2a2f38;
  --bo:12px; --bo-lon:18px;
  --bong:0 1px 2px rgba(16,24,40,.06),0 4px 14px rgba(16,24,40,.06);
  --bong-lon:0 10px 40px rgba(16,24,40,.14);
  --rong:1200px;
  --font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--nen);color:var(--chu);font:16px/1.65 var(--font);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--do);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.2;letter-spacing:-.01em;margin:0 0 .5em;color:var(--chu)}
p{margin:0 0 1em}
.khung{max-width:var(--rong);margin:0 auto;padding:0 20px}
.an-man{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- Nút ---------- */
.nut{display:inline-flex;align-items:center;justify-content:center;gap:9px;
  background:var(--do);color:#fff;border:1px solid var(--do);border-radius:10px;
  padding:12px 22px;font:600 15px/1.2 var(--font);cursor:pointer;text-decoration:none;
  transition:background .15s,border-color .15s,transform .15s;white-space:nowrap}
.nut:hover{background:var(--do-dam);border-color:var(--do-dam);text-decoration:none;color:#fff}
.nut:active{transform:translateY(1px)}
.nut.xanh{background:var(--xanh);border-color:var(--xanh)}
.nut.xanh:hover{background:var(--xanh-dam);border-color:var(--xanh-dam)}
.nut.vien{background:transparent;color:var(--chu);border-color:var(--vien)}
.nut.vien:hover{background:var(--nen2);color:var(--chu)}
.nut.trong{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.55)}
.nut.trong:hover{background:rgba(255,255,255,.14)}
.nut.phu{background:#fff;color:var(--chu);border-color:var(--vien)}
.nut.phu:hover{background:var(--nen2);color:var(--chu)}
.nut.nho{padding:8px 14px;font-size:14px;border-radius:8px}
.nut.lon{padding:15px 26px;font-size:16px}
.nut svg{flex:0 0 auto}

/* ---------- Đầu trang ---------- */
.dau{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(1.6) blur(10px);-webkit-backdrop-filter:saturate(1.6) blur(10px);
  border-bottom:1px solid var(--vien)}
.dau .khung{display:flex;align-items:center;gap:22px;height:70px;max-width:1340px}
.logo{display:flex;align-items:center;gap:10px;color:var(--chu);flex:0 0 auto}
.logo:hover{text-decoration:none}
.logo svg{height:38px;width:auto}
.logo-chu{display:flex;flex-direction:column;line-height:1.05}
.logo-chu b{font-size:18px;letter-spacing:.02em;font-weight:800}
.logo-chu small{font-size:10.5px;color:var(--mo);margin-top:3px;letter-spacing:.01em}
.menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.menu a{color:var(--chu2);font-size:14.5px;font-weight:500;padding:8px 10px;border-radius:8px;white-space:nowrap}
.menu a:hover{background:var(--nen2);text-decoration:none;color:var(--chu)}
.menu a.dang{color:var(--do);font-weight:700}
.dau-phai{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.dau-phai .tk{font-size:14px;color:var(--chu2);font-weight:500;padding:8px 10px;border-radius:8px}
.dau-phai .tk:hover{background:var(--nen2);text-decoration:none}
.mo-menu{display:none;background:none;border:1px solid var(--vien);border-radius:9px;
  width:42px;height:42px;align-items:center;justify-content:center;cursor:pointer;color:var(--chu)}
@media (max-width:1180px){
  .menu{display:none;position:absolute;left:0;right:0;top:70px;background:#fff;
    flex-direction:column;align-items:stretch;padding:10px 16px 16px;gap:2px;
    border-bottom:1px solid var(--vien);box-shadow:var(--bong-lon)}
  .menu a{padding:12px 12px;font-size:16px}
  .dau.mo .menu{display:flex}
  .mo-menu{display:inline-flex;margin-left:auto}
  .dau-phai .tk{display:none}
}
@media (max-width:1320px) and (min-width:1181px){.menu a{padding:8px 7px;font-size:14px}.logo-chu small{display:none}}
@media (max-width:520px){
  .logo-chu small{display:none}
  .logo svg{height:30px}
  .logo-chu b{font-size:15px}
  .dau-phai .nut{padding:8px 11px;font-size:13.5px}
  .dau .khung{gap:8px;padding:0 14px}
  .mo-menu{width:38px;height:38px}
}

/* ---------- Phần đầu trang lớn (hero) ---------- */
.hero{position:relative;background:var(--toi);color:#fff;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 480px at 85% 30%,rgba(215,20,31,.28),transparent 60%),
    radial-gradient(700px 420px at 5% 110%,rgba(21,101,216,.18),transparent 60%),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px) 0 0/44px 44px,
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px) 0 0/44px 44px}
.hero .khung{position:relative;display:grid;grid-template-columns:1fr 1.08fr;gap:48px;
  align-items:center;padding-top:64px;padding-bottom:36px}
.hero h1{color:#fff;font-size:clamp(36px,5.2vw,62px);font-weight:800;letter-spacing:-.025em;margin:0 0 10px}
.hero .phu-de{font-size:clamp(20px,2.3vw,29px);font-weight:700;color:#fff;margin:0 0 18px;line-height:1.25}
.hero .mo-ta{color:#c7ccd6;font-size:17px;max-width:54ch;margin:0 0 28px}
.hero .hang-nut{display:flex;flex-wrap:wrap;gap:12px}
.hero .ghi{color:#9aa1ad;font-size:13.5px;margin-top:16px}
.hero .ghi b{color:#fff}
.man-hinh{position:relative;border-radius:14px;background:#0a0b0e;padding:10px 10px 12px;
  box-shadow:0 30px 80px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.08)}
.man-hinh:after{content:"";position:absolute;left:50%;bottom:-26px;width:26%;height:26px;
  transform:translateX(-50%);background:linear-gradient(#1b1e24,#0d0f12);
  clip-path:polygon(18% 0,82% 0,100% 100%,0 100%)}
.man-hinh img{border-radius:6px;width:100%;aspect-ratio:16/9;object-fit:cover;object-position:left top;background:#1c1f25}
.hero .khung.hero-duoi{display:block;padding-top:0;padding-bottom:0}
.hero-loi{position:relative;display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(255,255,255,.1);margin-top:18px}
.hero-loi div{display:flex;align-items:center;gap:12px;padding:20px 14px;color:#e6e8ec;font-size:14.5px;font-weight:600}
.hero-loi div+div{border-left:1px solid rgba(255,255,255,.1)}
.hero-loi svg{flex:0 0 auto;color:#ff5a61}
@media (max-width:960px){
  .hero .khung{grid-template-columns:1fr;gap:40px;padding-top:44px}
  .hero-loi{grid-template-columns:repeat(2,1fr)}
  .hero-loi div:nth-child(3){border-left:0}
  .hero-loi div:nth-child(n+3){border-top:1px solid rgba(255,255,255,.1)}
}
@media (max-width:520px){
  .hero .hang-nut .nut{flex:1 1 100%}
  .hero-loi div{padding:16px 8px;font-size:13.5px}
}

/* ---------- Khối nội dung ---------- */
.phan{padding:76px 0}
.phan.xam{background:var(--nen2)}
.phan.nho{padding:52px 0}
.tieu-de-phan{text-align:center;max-width:720px;margin:0 auto 42px}
.tieu-de-phan .nhan-nho{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--do);margin-bottom:10px}
.tieu-de-phan h2{font-size:clamp(26px,3.3vw,38px);font-weight:800}
.tieu-de-phan p{color:var(--mo);font-size:17px;margin:0}
.luoi{display:grid;gap:22px}
.luoi-2{grid-template-columns:repeat(2,1fr)}
.luoi-3{grid-template-columns:repeat(3,1fr)}
.luoi-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:960px){.luoi-3,.luoi-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.luoi-2,.luoi-3,.luoi-4{grid-template-columns:1fr}}

.the{background:#fff;border:1px solid var(--vien);border-radius:var(--bo-lon);padding:26px;
  box-shadow:var(--bong);transition:transform .2s,box-shadow .2s}
a.the{display:block;color:inherit}
a.the:hover{transform:translateY(-3px);box-shadow:var(--bong-lon);text-decoration:none}
.the h3{font-size:19px;margin:14px 0 8px}
.the p{color:var(--mo);font-size:15px;margin:0}
.bieu-tuong{width:52px;height:52px;border-radius:14px;background:var(--do-nhat);color:var(--do);
  display:flex;align-items:center;justify-content:center}
.bieu-tuong.xanh{background:#e8f0fd;color:var(--xanh)}
.the.giua{text-align:center}
.the.giua .bieu-tuong{margin:0 auto}

/* ---------- Ảnh sản phẩm ---------- */
.anh-sp{margin:0;background:#fff;border:1px solid var(--vien);border-radius:var(--bo-lon);overflow:hidden;box-shadow:var(--bong)}
.anh-sp a{display:block}
.anh-sp img{width:100%;aspect-ratio:4/3;object-fit:cover;object-position:left top;background:var(--nen3);transition:transform .35s}
.anh-sp a:hover img{transform:scale(1.03)}
.anh-sp figcaption{padding:14px 16px;font-weight:700;font-size:15.5px;text-align:center}
.anh-sp figcaption span{display:block;font-weight:400;color:var(--mo);font-size:13.5px;margin-top:2px}

/* ---------- Quy trình ---------- */
.quy-trinh{counter-reset:b;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.buoc-qt{position:relative;padding:26px 22px;border-radius:var(--bo-lon);background:#fff;border:1px solid var(--vien)}
.buoc-qt:before{counter-increment:b;content:counter(b);display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;background:var(--do);color:#fff;font-weight:800;margin-bottom:14px}
.buoc-qt h3{font-size:17.5px;margin-bottom:6px}
.buoc-qt p{color:var(--mo);font-size:14.5px;margin:0}
@media (max-width:960px){.quy-trinh{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.quy-trinh{grid-template-columns:1fr}}

/* ---------- Video ---------- */
.video-khoi{display:grid;grid-template-columns:1.25fr 1fr;gap:44px;align-items:center}
.video-khung{position:relative;aspect-ratio:16/9;border-radius:var(--bo-lon);overflow:hidden;background:#000;box-shadow:var(--bong-lon)}
.video-khung iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
@media (max-width:900px){.video-khoi{grid-template-columns:1fr}}

/* ---------- Danh sách tick ---------- */
.tick{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.tick li{position:relative;padding-left:32px}
.tick li:before{content:"";position:absolute;left:0;top:3px;width:21px;height:21px;border-radius:50%;
  background:#12a150 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 12 4 4 8-8'/%3E%3C/svg%3E") center/13px no-repeat}

/* ---------- Bảng giá ---------- */
.bang-goi{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:22px;align-items:stretch}
.goi{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--vien);
  border-radius:var(--bo-lon);padding:30px 26px;box-shadow:var(--bong)}
.goi.noi{border:2px solid var(--do);box-shadow:var(--bong-lon)}
.goi .nhan-goi{position:absolute;top:-13px;left:26px;background:var(--do);color:#fff;font-size:11.5px;
  font-weight:800;letter-spacing:.08em;padding:5px 12px;border-radius:30px}
.goi .ten{font-weight:700;color:var(--mo);text-transform:uppercase;letter-spacing:.06em;font-size:13px}
.goi .gia{font-size:36px;font-weight:800;letter-spacing:-.02em;margin:10px 0 2px;color:var(--chu)}
.goi .han{color:var(--do);font-weight:700;font-size:14.5px}
.goi .mo-ta-goi{color:var(--mo);font-size:14.5px;margin:14px 0 22px;flex:1}

/* ---------- Tải về ---------- */
.hop-tai{display:flex;align-items:center;gap:22px;flex-wrap:wrap;justify-content:space-between;
  background:#fff;border:1px solid var(--vien);border-radius:var(--bo-lon);padding:24px 26px;box-shadow:var(--bong)}
.hop-tai .ten-file{font-weight:800;font-size:18px;word-break:break-all}
.hop-tai .thong-tin{color:var(--mo);font-size:14.5px;margin-top:3px}
.dai-cta{background:linear-gradient(120deg,#b00f18,#d7141f 55%,#e8434b);color:#fff;border-radius:22px;
  padding:44px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.dai-cta h2{color:#fff;font-size:clamp(24px,3vw,32px);margin:0 0 6px}
.dai-cta p{margin:0;color:#ffe3e4;font-size:16.5px}
.dai-cta .nut.trang{background:#fff;color:var(--do);border-color:#fff}
.dai-cta .nut.trang:hover{background:#ffeeee}

/* ---------- Trang con / bài viết ---------- */
.dau-trang-con{background:var(--toi);color:#fff;position:relative;overflow:hidden}
.dau-trang-con:before{content:"";position:absolute;inset:0;
  background:radial-gradient(700px 300px at 90% 0,rgba(215,20,31,.3),transparent 60%),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px) 0 0/44px 44px,
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px) 0 0/44px 44px}
.dau-trang-con .khung{position:relative;padding-top:52px;padding-bottom:50px}
.dau-trang-con h1{color:#fff;font-size:clamp(30px,4vw,46px);font-weight:800;margin:0 0 12px;max-width:26ch}
.dau-trang-con p{color:#c7ccd6;font-size:17.5px;max-width:64ch;margin:0}
.duong-dan{font-size:13.5px;color:#9aa1ad;margin-bottom:16px}
.duong-dan a{color:#c7ccd6}
.bai{max-width:820px;margin:0 auto}
.bai h2{font-size:clamp(23px,2.6vw,30px);font-weight:800;margin:44px 0 14px}
.bai h3{font-size:20px;margin:30px 0 10px}
.bai p,.bai li{color:var(--chu2);font-size:16.5px}
.bai ul,.bai ol{padding-left:22px;margin:0 0 1.1em}
.bai li{margin-bottom:7px}
.bai figure{margin:28px 0}
.bai figure img{border-radius:var(--bo);border:1px solid var(--vien)}
.bai figcaption{font-size:14px;color:var(--mo);text-align:center;margin-top:8px}
.bai .luoi{margin:18px 0}
.hop-ghi{background:var(--nen2);border-left:4px solid var(--do);border-radius:10px;padding:16px 20px;margin:22px 0}
.hop-ghi p:last-child{margin:0}
.bang-cn{width:100%;border-collapse:collapse;margin:14px 0 24px;font-size:15.5px}
.bang-cn th,.bang-cn td{padding:12px 14px;border-bottom:1px solid var(--vien);text-align:left;vertical-align:top}
.bang-cn th{background:var(--nen2);font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--mo)}
.bang-cn td:first-child{font-weight:700;white-space:nowrap}
@media (max-width:620px){.bang-cn td:first-child{white-space:normal}}
.muc-luc{background:var(--nen2);border-radius:var(--bo);padding:18px 22px;margin:0 0 30px}
.muc-luc b{display:block;margin-bottom:6px}
.muc-luc ol{margin:0;padding-left:20px}
.muc-luc li{margin:3px 0;font-size:15.5px}

/* Nhóm tính năng */
.nhom-cn{scroll-margin-top:90px}
.nhom-cn+.nhom-cn{margin-top:64px}
.nhom-cn .dau-nhom{display:flex;align-items:center;gap:16px;margin-bottom:22px}
.nhom-cn .dau-nhom h2{margin:0;font-size:clamp(23px,2.6vw,30px);font-weight:800}
.nhom-cn .dau-nhom p{margin:2px 0 0;color:var(--mo)}
.cn-muc{background:#fff;border:1px solid var(--vien);border-radius:14px;padding:20px 22px}
.cn-muc h3{font-size:16.5px;margin:0 0 6px;display:flex;align-items:center;gap:8px}
.cn-muc h3:before{content:"";width:8px;height:8px;border-radius:2px;background:var(--do);flex:0 0 auto}
.cn-muc p{color:var(--mo);font-size:14.5px;margin:0}
.nhay-nhom{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:-10px 0 44px}
.nhay-nhom a{border:1px solid var(--vien);border-radius:30px;padding:8px 16px;font-size:14.5px;color:var(--chu2);font-weight:600;background:#fff}
.nhay-nhom a:hover{border-color:var(--do);color:var(--do);text-decoration:none}

/* Hỏi đáp */
.hoi-dap details{background:#fff;border:1px solid var(--vien);border-radius:14px;padding:0 22px;margin-bottom:12px}
.hoi-dap summary{cursor:pointer;list-style:none;padding:18px 34px 18px 0;font-weight:700;font-size:16.5px;position:relative}
.hoi-dap summary::-webkit-details-marker{display:none}
.hoi-dap summary:after{content:"+";position:absolute;right:0;top:12px;font-size:26px;font-weight:400;color:var(--do)}
.hoi-dap details[open] summary:after{content:"−"}
.hoi-dap details > div{padding:0 0 18px;color:var(--chu2)}
.hoi-dap details > div p:last-child{margin:0}

/* Liên hệ */
.lien-he-the{display:flex;gap:16px;align-items:flex-start}
.lien-he-the .bieu-tuong{flex:0 0 52px}
.lien-he-the h3{margin:0 0 4px;font-size:17px}
.lien-he-the p{margin:0;color:var(--mo)}

/* Blog */
.the-bai{display:flex;flex-direction:column;background:#fff;border:1px solid var(--vien);border-radius:var(--bo-lon);
  overflow:hidden;box-shadow:var(--bong);color:inherit;transition:transform .2s,box-shadow .2s}
.the-bai:hover{transform:translateY(-3px);box-shadow:var(--bong-lon);text-decoration:none}
.the-bai img{aspect-ratio:16/9;object-fit:cover;object-position:left top;background:var(--nen3);width:100%}
.the-bai .noi{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.the-bai .chuyen-muc{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--do)}
.the-bai h3{font-size:18.5px;margin:8px 0 8px}
.the-bai p{color:var(--mo);font-size:14.5px;margin:0 0 14px;flex:1}
.the-bai .doc{font-weight:700;color:var(--do);font-size:14.5px}

/* Đánh giá (chỉ hiện khi có nhận xét thật) */
.danh-gia{background:#fff;border:1px solid var(--vien);border-radius:var(--bo-lon);padding:24px}
.danh-gia .ai{display:flex;gap:12px;align-items:center;margin-bottom:12px}
.danh-gia .ai img,.danh-gia .chu-dau{width:48px;height:48px;border-radius:50%;object-fit:cover;flex:0 0 48px}
.danh-gia .chu-dau{display:flex;align-items:center;justify-content:center;background:var(--do-nhat);color:var(--do);font-weight:800}
.danh-gia .ai b{display:block}
.danh-gia .ai span{color:var(--mo);font-size:14px}
.danh-gia p{margin:0;color:var(--chu2)}

/* ---------- Chân trang ---------- */
.chan{background:var(--toi);color:#aeb4bf;padding:64px 0 0;margin-top:0}
.chan a{color:#d3d7de}
.chan a:hover{color:#fff}
.chan .luoi-chan{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.chan h4{color:#fff;font-size:15px;margin:0 0 14px;letter-spacing:.02em}
.chan ul{list-style:none;padding:0;margin:0}
.chan li{margin:0 0 9px;font-size:14.5px}
.chan .logo{color:#fff;margin-bottom:14px}
.chan .logo-chu small{color:#9aa1ad}
.chan .mo-ta-chan{font-size:14.5px;max-width:36ch}
.mxh{display:flex;gap:10px;margin-top:16px}
.mxh a{width:38px;height:38px;border-radius:50%;background:#1f232a;display:flex;align-items:center;justify-content:center}
.mxh a:hover{background:var(--do)}
.chan-duoi{border-top:1px solid var(--toi-vien);margin-top:48px;padding:20px 0;font-size:13.5px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.chan-duoi .phai{display:flex;gap:18px;flex-wrap:wrap}
@media (max-width:900px){.chan .luoi-chan{grid-template-columns:1fr 1fr}}
@media (max-width:540px){.chan .luoi-chan{grid-template-columns:1fr}}

/* ---------- Trang tài khoản / mua bản quyền (giữ tên lớp cũ) ---------- */
.trang-hep{max-width:780px;margin:0 auto;padding:44px 20px 70px}
.khoi{background:#fff;border:1px solid var(--vien);border-radius:var(--bo-lon);padding:26px;margin-bottom:18px;box-shadow:var(--bong)}
.khoi h1{font-size:26px;margin:0 0 8px}
.khoi h2{font-size:13px;color:var(--do);text-transform:uppercase;letter-spacing:.09em;margin:0 0 14px}
.mo{color:var(--mo)}
code{font:13.5px/1.6 ui-monospace,Menlo,Consolas,monospace;background:var(--nen2);border:1px solid var(--vien);
  border-radius:6px;padding:3px 8px;display:inline-block;letter-spacing:.3px;color:var(--chu)}
table{border-collapse:collapse}
.khoi table{width:100%;font-size:14.5px}
.khoi th{text-align:left;font-size:12px;color:var(--mo);text-transform:uppercase;letter-spacing:.05em;padding:9px 8px;border-bottom:1px solid var(--vien)}
.khoi td{padding:12px 8px;border-bottom:1px solid var(--nen3);vertical-align:top}
.tt{font-size:11.5px;font-weight:700;padding:3px 9px;border-radius:20px;white-space:nowrap}
.tt.ACTIVE{background:#e3f6ea;color:#0f7a3c}.tt.NEW{background:#e6effc;color:#1256b8}
.tt.BLOCKED{background:#fde8e8;color:#b3141c}.tt.REVOKED{background:#eceef1;color:#555c67}
.tt.EXPIRED{background:#fff4dc;color:#8a5a00}
.loi{background:#fdecec;border:1px solid #f5c2c4;color:#9f1219;border-radius:10px;padding:12px 15px;margin-bottom:18px}
.bao-cuon{overflow-x:auto}
.ve-trang-chu{display:inline-block;margin-bottom:16px;font-size:14.5px}
.cn-muc.co-icon h3:before{display:none}

/* Nút Zalo / gọi nổi góc phải */
.nut-noi{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px}
.nut-noi a{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;
  box-shadow:0 8px 24px rgba(0,0,0,.25);font-weight:800;font-size:14px;text-decoration:none}
.nut-noi a:hover{transform:scale(1.06);text-decoration:none;color:#fff}
.nut-noi .zalo{background:#0068ff}
.nut-noi .goi{background:var(--do)}
@media (max-width:520px){.nut-noi{right:12px;bottom:12px}.nut-noi a{width:48px;height:48px}}
.nut-noi svg{width:24px;height:24px;flex:0 0 24px;display:block}