/* Ariston Việt Nam – bổ sung */
.ar-dg{display:grid;grid-template-columns:220px 1fr;gap:22px;align-items:center;margin-bottom:8px}
.ar-dg img{width:100%;aspect-ratio:1;object-fit:contain;background:#fff;border-radius:20px;padding:10px;box-shadow:0 14px 34px rgba(4,34,63,.12);animation:arFlt 6s ease-in-out infinite}
@keyframes arFlt{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.ar-ftw{position:relative;overflow:hidden;padding:56px 0;background:linear-gradient(160deg,#021a33,#04325e 55%,#0077c8);color:#fff}
.ar-ftw:before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(79,179,246,.28),transparent 65%);right:-160px;top:-220px}
.ar-ftw .center{text-align:center;margin-bottom:26px;position:relative}
.ar-ftw .eb{display:inline-block;background:rgba(255,255,255,.14);color:#bfe3fc;font-weight:800;font-size:12px;letter-spacing:.12em;text-transform:uppercase;padding:5px 12px;border-radius:99px;margin-bottom:10px}
.ar-ftw h2{color:#fff;font-size:28px;margin:0}
.ar-ft{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.ar-fc{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:18px;padding:20px 18px;transition:transform .35s,background .35s;animation:arIn .7s both;animation-delay:calc(var(--i)*90ms)}
@keyframes arIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
.ar-fc:hover{transform:translateY(-6px);background:rgba(255,255,255,.14)}
.ar-fc i{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;margin-bottom:12px;background:linear-gradient(135deg,#4fb3f6,#0077c8);color:#fff;box-shadow:0 10px 22px rgba(0,119,200,.35)}
.ar-fc:nth-child(3n+2) i{background:linear-gradient(135deg,#ffd166,#f59e0b);color:#3a2600;box-shadow:0 10px 22px rgba(245,158,11,.3)}
.ar-fc:nth-child(3n) i{background:linear-gradient(135deg,#5eead4,#14b8a6);color:#053b35;box-shadow:0 10px 22px rgba(20,184,166,.3)}
.ar-fc svg{width:26px;height:26px}
.ar-fc h3{color:#fff;font-size:15.5px;margin:0 0 6px;line-height:1.35}
.ar-fc p{color:rgba(255,255,255,.86);font-size:14px;line-height:1.55;margin:0}
.ar-why{margin-top:10px}
.ar-gia{display:flex;gap:18px;align-items:center;background:linear-gradient(120deg,#eaf5fd,#fff);border:1px solid #cfe9fc;border-radius:18px;padding:14px 18px;margin:6px 0 18px}
.ar-gia img{width:96px;height:96px;object-fit:contain;background:#fff;border-radius:14px;padding:6px}
.ar-gia>div{flex:1}
.ar-gia span{display:block;font-size:13px;color:#5f6d7c;font-weight:600}
.ar-gia .kv b,.ar-gia .rp{font-size:26px}
.ar-gia .bt{white-space:nowrap}
.gs-ct img{border-radius:14px;margin:14px auto}
@media(max-width:900px){.ar-ft{grid-template-columns:1fr 1fr;gap:10px}.ar-fc{padding:14px 12px}.ar-fc i{width:42px;height:42px;border-radius:12px}.ar-fc p{font-size:13px}.ar-ftw{padding:38px 0}.ar-ftw h2{font-size:21px}
.ar-dg{grid-template-columns:1fr}.ar-dg img{max-width:210px;margin:0 auto}.ar-gia{flex-wrap:wrap}.ar-gia img{width:72px;height:72px}}

/* bài viết */
.ar-art{max-width:860px;padding-top:6px}
.ar-ah{text-align:center;margin:10px 0 18px}
.ar-cat{display:inline-block;background:#eaf5fd;color:#0066b3;font-weight:800;font-size:12px;letter-spacing:.08em;text-transform:uppercase;padding:5px 12px;border-radius:99px;margin-bottom:10px}
.ar-ah h1{font-size:34px;line-height:1.25;margin:0 0 10px;color:#04223f}
.ar-meta{color:#6b6b72;font-size:14px;margin:0}
.ar-fig{margin:0 0 22px;background:linear-gradient(135deg,#eaf5fd,#fff);border-radius:22px;overflow:hidden;display:flex;justify-content:center}
.ar-fig img{max-height:440px;width:auto;object-fit:contain;padding:14px}
.ar-body{font-size:16.5px;line-height:1.8;color:#2b2b33}
.ar-body h2{font-size:25px;color:#04223f;margin:34px 0 12px;padding-left:14px;border-left:5px solid #0077c8;scroll-margin-top:90px}
.ar-body h3{font-size:19px;color:#00508f;margin:22px 0 8px}
.ar-body p{margin:0 0 14px}
.ar-body ul,.ar-body ol{margin:0 0 16px 22px}
.ar-body li{margin-bottom:6px}
.ar-body a{color:#0066b3;font-weight:600;text-decoration:underline;text-decoration-color:rgba(0,102,179,.35);text-underline-offset:3px}
.ar-body img{border-radius:14px;margin:12px auto}
.ar-intro{font-size:17.5px;background:#f4f9fe;border-left:4px solid #4fb3f6;border-radius:0 14px 14px 0;padding:14px 18px;margin-bottom:18px}
.ar-intro p:last-child{margin:0}
.ar-toc{background:#fff;border:1px solid #e3e9ef;border-radius:16px;padding:16px 20px;margin:0 0 10px;box-shadow:0 6px 18px rgba(4,34,63,.05)}
.ar-toc b{display:block;color:#04223f;margin-bottom:6px}
.ar-toc ol{margin:0 0 0 20px}.ar-toc li{margin:4px 0}.ar-toc a{text-decoration:none;font-weight:500}
.ar-note{background:#fff8e6;border:1px solid #f4e2b4;border-radius:14px;padding:12px 16px;margin:0 0 16px;font-size:15px}
.ar-body .tbl-wrap{overflow-x:auto;margin:10px 0 18px;border-radius:12px;box-shadow:0 0 0 1px #e3e9ef}
.ar-body table{width:100%;border-collapse:collapse;font-size:14.5px;line-height:1.5}
.ar-body th,.ar-body td{padding:10px 12px;border-bottom:1px solid #e3e9ef;text-align:left;vertical-align:top}
.ar-body thead th{background:#0077c8;color:#fff}
.ar-body tbody tr:nth-child(even){background:#f7fafc}
.ar-body td a{text-decoration:none}
.ar-pbox{background:#f4f9fe;border-radius:18px;padding:16px;margin:22px 0}
.ar-pbox>b{display:block;margin-bottom:10px;color:#04223f}
.ar-pbox .grid{gap:10px}
.ar-cta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;background:linear-gradient(120deg,#04223f,#0077c8);color:#fff;border-radius:18px;padding:18px 20px;margin:30px 0 10px}
.ar-cta>div{flex:1;min-width:220px}.ar-cta b{display:block;font-size:18px}.ar-cta span{opacity:.88;font-size:14px}
.ar-cta a{text-decoration:none}
.ar-rel{padding:10px 16px 40px}.ar-rel h2{font-size:24px;color:#04223f}
.ar-blog{padding-bottom:40px}.ar-blog h1{font-size:32px;color:#04223f;margin-top:10px}
.ar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:14px}
.ar-blog .ar-grid{grid-template-columns:repeat(3,1fr)}
.ar-card{display:flex;flex-direction:column;background:#fff;border:1px solid #e3e9ef;border-radius:18px;overflow:hidden;color:inherit;text-decoration:none!important;transition:transform .3s,box-shadow .3s}
.ar-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(4,34,63,.12)}
.ar-card img{width:100%;aspect-ratio:16/10;object-fit:contain;background:linear-gradient(135deg,#eaf5fd,#fff);padding:10px}
.ar-card span{margin:12px 14px 0;font-size:11.5px;font-weight:800;color:#0077c8;text-transform:uppercase;letter-spacing:.06em}
.ar-card b{margin:4px 14px 6px;font-size:16px;line-height:1.4;color:#04223f}
.ar-card p{margin:0 14px 16px;font-size:13.5px;color:#6b6b72;line-height:1.55}
.ar-home{padding:30px 0}
@media(max-width:900px){.ar-ah h1{font-size:25px}.ar-body{font-size:16px}.ar-body h2{font-size:21px}.ar-grid,.ar-blog .ar-grid{grid-template-columns:1fr 1fr;gap:10px}.ar-card b{font-size:14.5px}.ar-card p{display:none}.ar-blog h1{font-size:24px}}