/* ===================================================================
   KONIX Vietnam — Engineering Resources
   Mo rong konix.css. Dung lai bien mau, radius, shadow va component
   co san. Khong ghi de bat ky quy tac nao cua konix.css.
   =================================================================== */

/* ---------- nav highlight ---------- */
.nav-links a.nav-res{color:#fff}
.nav-links a.nav-res::after{content:"";display:block;height:2px;border-radius:2px;background:var(--steel-2);
  transform:scaleX(0);transform-origin:left;transition:.25s}
.nav-links a.nav-res:hover::after{transform:scaleX(1)}

/* ---------- hero anh full-bleed, cung kieu voi trang industry ----------
   Dung lai .visual-hero cua konix.css, chi ghi de trong pham vi
   .rs-visual-hero nen khong anh huong trang nao khac.               */
/* Anh nha may duoc xu ly thanh lop nen duotone navy: giu chieu sau va
   cam giac "xuong that", nhung khong tranh chap voi chu. Muon anh hien
   ro hon thi giam grayscale va tang brightness; muon toi hon thi lam nguoc lai. */
.rs-visual-hero .visual-hero-img{right:0;width:100%;object-fit:cover;object-position:center;
  filter:grayscale(.82) brightness(.58) contrast(1.06)}
.rs-visual-hero::after{display:block !important;content:"";position:absolute;inset:0;z-index:2;
  background:
    linear-gradient(180deg,rgba(6,13,24,.62) 0%,rgba(6,13,24,.30) 36%,
      rgba(6,13,24,.42) 68%,rgba(6,13,24,.88) 100%),
    linear-gradient(90deg,rgba(10,31,60,.52) 0%,rgba(10,31,60,.74) 100%)}
/* vet sang xanh thep phia sau khung chu, cho hero co diem nhan */
.rs-visual-hero::before{content:"";position:absolute;z-index:2;pointer-events:none;
  width:760px;height:760px;right:-200px;top:-280px;border-radius:50%;
  background:radial-gradient(circle,rgba(46,117,182,.26),transparent 68%)}
.rs-visual-hero .visual-hero-text{z-index:3;background:rgba(6,21,43,.58)}
@media(max-width:820px){
  .rs-visual-hero .visual-hero-img{object-position:center}
  .rs-visual-hero::before{width:420px;height:420px;right:-140px;top:-180px}
}

/* ---------- dai tim kiem duoi hero ---------- */
.rs-searchband{background:linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff;
  padding:52px 0;position:relative;overflow:hidden;scroll-margin-top:74px}
.rs-searchband::before{content:"";position:absolute;width:520px;height:520px;right:-150px;top:-220px;
  border-radius:50%;background:radial-gradient(circle,rgba(46,117,182,.20),transparent 70%);pointer-events:none}
.rs-searchband .wrap{position:relative;z-index:2}
.rs-hero-lead{color:#c6d3e6;font-size:1.04rem;max-width:70ch}

.rs-searchbar{display:flex;align-items:center;gap:11px;margin-top:26px;max-width:620px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);border-radius:12px;padding:0 14px;
  transition:.2s}
.rs-searchbar:focus-within{border-color:var(--steel-2);background:rgba(255,255,255,.11)}
.rs-searchbar svg{flex:none;width:19px;height:19px;stroke:#9fb0c7;fill:none;stroke-width:2;stroke-linecap:round}
.rs-searchbar input{flex:1;background:none;border:0;outline:none;color:#fff;font:inherit;font-size:.95rem;padding:14px 0}
.rs-searchbar input::placeholder{color:#8fa2bb}

.rs-chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.rs-chip{background:rgba(255,255,255,.05);border:1px solid var(--line);color:#cdd9ec;border-radius:999px;
  padding:8px 15px;font:inherit;font-size:.82rem;font-weight:700;cursor:pointer;transition:.18s}
.rs-chip span{opacity:.55;margin-left:5px;font-weight:600}
.rs-chip:hover{border-color:var(--steel-2);color:#fff}
.rs-chip.on{background:var(--steel);border-color:var(--steel);color:#fff}

/* ---------- search results ---------- */
.rs-results{padding:44px 0 10px}
.rs-results-lab{font-size:.85rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--muted-d);margin-bottom:20px}

/* ---------- cards ----------
   Dung lai radius, vien, shadow va hieu ung hover cua the .ind-card /
   .sol-card san co. Desktop 4 the mot hang, tablet 2x2, dien thoai 1 cot. */
.rs-grid{display:grid;gap:20px}
.rs-grid-3{grid-template-columns:repeat(3,1fr)}
.rs-grid-4{grid-template-columns:repeat(4,1fr)}

.rs-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line-d);
  border-radius:var(--radius);overflow:hidden;transition:.3s;height:100%;text-decoration:none}
.rs-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:#cbd9ea}
.rs-card-img{display:block;aspect-ratio:4/3;background:#0b1c34;overflow:hidden}
.rs-card-img img{width:100%;height:100%;object-fit:cover;object-position:left top;transition:transform .5s}
.rs-card:hover .rs-card-img img{transform:scale(1.04)}
.rs-card-body{display:flex;flex-direction:column;flex:1;padding:18px 20px 20px}
.rs-card-pn{display:inline-block;align-self:flex-start;font-size:.62rem;font-weight:800;
  letter-spacing:.13em;text-transform:uppercase;color:#fff;background:var(--navy);
  border-radius:6px;padding:4px 9px;margin-bottom:10px}
.rs-card-cat{display:block;font-size:.66rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;
  color:var(--steel);margin-bottom:7px}
.rs-card h3{font-size:1rem;line-height:1.32;color:var(--navy);font-weight:800;margin-bottom:8px}
.rs-card p{font-size:.87rem;color:#3c4a5e;flex:1;line-height:1.55}
.rs-card-meta{display:block;margin-top:14px;padding-top:12px;border-top:1px solid #eef2f7;
  font-size:.76rem;color:var(--muted-d)}
.rs-card-meta b{color:var(--steel);font-weight:700}

/* the noi bat — anh ben trai, chu ben phai */
.rs-card-feat{flex-direction:row;align-items:stretch}
.rs-card-feat .rs-card-img{flex:0 0 46%;aspect-ratio:auto}
.rs-card-feat .rs-card-body{padding:32px 34px}
.rs-card-feat h3{font-size:1.5rem;line-height:1.22;margin-bottom:12px}
.rs-card-feat p{font-size:1rem}

/* ---------- popular topics ---------- */
.rs-topics{display:flex;flex-wrap:wrap;gap:9px}
.rs-topic{background:#fff;border:1px solid var(--line-d);border-radius:999px;padding:9px 16px;
  font:inherit;font-size:.85rem;font-weight:600;color:var(--navy);cursor:pointer;transition:.18s}
.rs-topic:hover{border-color:var(--steel);box-shadow:0 6px 16px -8px rgba(10,20,40,.25);transform:translateY(-2px)}
/* danh muc chua co bai — hien thi nhung khong bam duoc, khong tao bai gia */
.rs-topic-soon{cursor:default;color:var(--muted-d);background:#f2f6fb;border-style:dashed}
.rs-topic-soon:hover{transform:none;box-shadow:none;border-color:#cdd8e6}

/* ---------- category sections ---------- */
.rs-cats{padding-bottom:20px}
.rs-catsec{padding:52px 0;border-top:1px solid var(--line-d);scroll-margin-top:90px}
.rs-cathead{margin-bottom:26px;max-width:70ch}
.rs-cathead h2{font-size:1.5rem;color:var(--navy);font-weight:800;letter-spacing:-.01em;margin-bottom:7px}
.rs-cathead p{color:var(--muted-d);font-size:.98rem}

/* ---------- pills ---------- */
.rs-pills{display:flex;flex-wrap:wrap;gap:9px}
.rs-pill{display:inline-flex;align-items:center;background:#fff;border:1px solid var(--line-d);
  border-radius:999px;padding:9px 16px;font:inherit;font-size:.86rem;font-weight:600;color:var(--navy);
  cursor:pointer;transition:.18s}
.rs-pill:hover{border-color:var(--steel);color:var(--steel);transform:translateY(-2px)}
.rs-pills-lg .rs-pill{font-size:.9rem;padding:11px 19px}

/* ===================================================================
   ARTICLE
   =================================================================== */
.rs-article{padding-top:110px}
.rs-narrow{max-width:820px}
.rs-crumb{font-size:.8rem;color:var(--muted-d);margin-bottom:22px}
.rs-crumb a{color:var(--steel)}
.rs-crumb a:hover{text-decoration:underline}

.rs-pn-badge{display:inline-block;font-size:.66rem;font-weight:800;letter-spacing:.14em;
  text-transform:uppercase;color:#fff;background:var(--navy);border-radius:7px;padding:6px 12px;
  margin-bottom:14px}
.rs-article h1{font-size:clamp(1.6rem,3.2vw,2.35rem);line-height:1.18;font-weight:800;color:var(--navy);
  letter-spacing:-.02em;margin:2px 0 22px}
.rs-hero-fig{margin:0 0 30px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-d);
  background:#0b1c34}
.rs-hero-fig img{width:100%;height:auto;display:block}
.rs-hero-sub{color:#d4def0;font-size:1.06rem;margin:6px 0 24px;max-width:46ch}
.rs-relnotes{margin-bottom:34px}
.rs-relnotes h2{font-size:1.28rem;color:var(--navy);font-weight:800;letter-spacing:-.01em;margin-bottom:18px}

.rs-byline{display:flex;flex-wrap:wrap;gap:14px 34px;padding:18px 0;margin-bottom:28px;
  border-top:1px solid var(--line-d);border-bottom:1px solid var(--line-d)}
.rs-byline>div{display:flex;flex-direction:column;gap:2px}
.rs-byline b{font-size:.86rem;color:var(--navy);font-weight:800}
.rs-byline span{font-size:.8rem;color:var(--muted-d)}

.rs-draft{background:#fff8e6;border:1px solid #f0dca8;color:#7a5a12;border-radius:10px;
  padding:13px 16px;font-size:.88rem;font-weight:600;margin-bottom:22px}

.rs-quick{background:#eef5fc;border:1px solid #cfe0f2;border-left:4px solid var(--steel);
  border-radius:12px;padding:22px 24px;margin-bottom:34px}
.rs-quick-lab{display:block;font-size:.7rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;
  color:var(--steel);margin-bottom:9px}
.rs-quick p{font-size:1.04rem;line-height:1.62;color:#16283f;margin:0}

.rs-body{color:#2b3949;font-size:1.02rem;line-height:1.75}
.rs-body h2{font-size:1.42rem;color:var(--navy);font-weight:800;letter-spacing:-.01em;
  margin:44px 0 14px;scroll-margin-top:90px}
.rs-body h3{font-size:1.1rem;color:var(--navy);font-weight:800;margin:30px 0 10px;scroll-margin-top:90px}
.rs-body h4{font-size:1rem;color:var(--navy);font-weight:800;margin:24px 0 8px}
.rs-body p{margin-bottom:17px}
.rs-body ul,.rs-body ol{margin:0 0 18px 21px}
.rs-body li{margin-bottom:8px}
.rs-body a{color:var(--steel);text-decoration:underline;text-underline-offset:2px}
.rs-body a:hover{color:var(--steel-2)}
.rs-body img{border-radius:12px;margin:22px 0;border:1px solid var(--line-d)}
.rs-body code{background:#eef2f7;border-radius:5px;padding:2px 6px;font-size:.9em;
  font-family:ui-monospace,Consolas,"Courier New",monospace}
.rs-body pre{background:var(--navy);color:#dbe6f5;border-radius:12px;padding:18px 20px;overflow:auto;margin:22px 0}
.rs-body pre code{background:none;color:inherit;padding:0}
.rs-body blockquote{border-left:4px solid var(--steel);background:#f5f8fc;border-radius:0 10px 10px 0;
  padding:15px 20px;margin:22px 0;color:#33415a;font-style:italic}

.rs-tablewrap{overflow-x:auto;margin:24px 0}
.rs-table{width:100%;border-collapse:collapse;font-size:.92rem;min-width:420px}
.rs-table th{background:var(--navy);color:#fff;text-align:left;font-weight:700;padding:11px 14px;
  font-size:.82rem;letter-spacing:.03em}
.rs-table td{border-bottom:1px solid var(--line-d);padding:11px 14px;color:#3c4a5e}
.rs-table tr:nth-child(even) td{background:#f7fafd}

.rs-tags{display:flex;flex-wrap:wrap;gap:8px;margin:34px 0 26px}
.rs-tag{font-size:.76rem;font-weight:600;color:#0d2547;background:#eef4fb;border:1px solid #d6e3f2;
  border-radius:8px;padding:6px 11px}

.rs-share{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:22px 0 8px;
  border-top:1px solid var(--line-d)}
.rs-share-lab{font-size:.74rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted-d);margin-right:4px}

.rs-relblock{background:var(--paper)}
.rs-links{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:34px;
  padding-top:30px;border-top:1px solid #dde6f0}
.rs-links h4{font-size:.74rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;
  color:var(--steel);margin-bottom:13px}

/* ---------- CTA ---------- */
.rs-cta{background:var(--navy);color:#fff;text-align:center}
.rs-cta h2{font-size:clamp(1.4rem,2.6vw,1.95rem);font-weight:800;color:#fff;letter-spacing:-.01em;
  margin-bottom:12px}
.rs-cta p{color:#c6d3e6;max-width:60ch;margin:0 auto 26px}
.rs-cta-btns{display:flex;flex-wrap:wrap;gap:13px;justify-content:center}

/* ===================================================================
   KHOI RELATED tren trang nganh / san pham / trang chu
   =================================================================== */
/* Khoi nay phai chay duoc CA tren trang dung konix.css LAN trang san pham
   dung product.css — nen moi bien mau deu co gia tri du phong. */
.rs-related{background:var(--paper,#f5f8fc);padding:64px 0}
.rs-wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.rs-related .eyebrow{font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;font-weight:700;
  color:var(--steel-2,#4a90d9);margin:0}
.rs-related-head{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;
  gap:12px;margin-bottom:24px}
.rs-home-h2{font-size:1.55rem;line-height:1.2;color:var(--navy,#0a1f3c);font-weight:800;
  letter-spacing:-.01em;margin-top:8px}
.rs-home-sub{font-size:.98rem;color:var(--muted-d,#5a6b82);margin-top:9px;max-width:62ch}
.rs-related-all{font-size:.88rem;font-weight:700;color:var(--steel,#2E75B6);white-space:nowrap;text-decoration:none}
.rs-related-all:hover{color:var(--steel-2,#4a90d9)}
.rs-mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
/* khi chi co 1 hoac 2 bai lien quan thi khong keo gian ra ca hang */
.rs-mini-grid.rs-mini-1{grid-template-columns:minmax(0,420px)}
.rs-mini-grid.rs-mini-2{grid-template-columns:repeat(2,minmax(0,420px))}
.rs-mini{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line-d,#e2e8f0);
  border-top:3px solid var(--steel,#2E75B6);border-radius:14px;padding:20px 22px;transition:.25s;
  text-decoration:none}
.rs-mini:hover{box-shadow:var(--shadow,0 18px 50px rgba(8,20,40,.14));transform:translateY(-3px)}
.rs-mini-pn{display:inline-block;align-self:flex-start;font-size:.6rem;font-weight:800;
  letter-spacing:.13em;text-transform:uppercase;color:#fff;background:var(--navy,#0a1f3c);
  border-radius:5px;padding:3px 8px;margin-bottom:9px}
.rs-mini-cat{font-size:.66rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;
  color:var(--steel,#2E75B6);margin-bottom:8px}
.rs-mini b{font-size:.98rem;line-height:1.34;color:var(--navy,#0a1f3c);font-weight:800;flex:1}
.rs-mini-meta{margin-top:14px;font-size:.76rem;color:var(--muted-d,#5a6b82)}

/* ---------- sitemap.html ---------- */
.sm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:18px}
.sm-col h3{font-size:.8rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;
  color:var(--steel);margin-bottom:11px}
.sm-col a{display:block;font-size:.9rem;color:#3c4a5e;margin-bottom:8px;line-height:1.45}
.sm-col a:hover{color:var(--steel)}

/* ===================================================================
   RESPONSIVE
   =================================================================== */
@media(max-width:1180px){
  .rs-grid-4{grid-template-columns:repeat(2,1fr)}   /* tablet: 2 x 2 */
}
@media(max-width:980px){
  .rs-grid-3{grid-template-columns:repeat(2,1fr)}
  .rs-mini-grid,
  .rs-mini-grid.rs-mini-1,
  .rs-mini-grid.rs-mini-2{grid-template-columns:1fr}
  .rs-card-feat{flex-direction:column}
  .rs-card-feat .rs-card-img{flex:none;aspect-ratio:4/3}
  .rs-card-feat .rs-card-body{padding:24px}
  .rs-card-feat h3{font-size:1.28rem}
  .sm-grid{grid-template-columns:repeat(2,1fr)}
  .rs-related-head{align-items:flex-start}
}
@media(max-width:680px){
  .rs-searchband{padding:38px 0}
  .rs-grid-3,.rs-grid-4{grid-template-columns:1fr}   /* dien thoai: 1 cot */
  .rs-home-h2{font-size:1.32rem}
  .rs-links{grid-template-columns:1fr;gap:22px}
  .rs-article{padding-top:92px}
  .rs-byline{gap:12px 22px}
  .rs-catsec{padding:38px 0}
  .rs-related-head{align-items:flex-start;flex-direction:column}
  .sm-grid{grid-template-columns:1fr}
  .rs-body{font-size:.98rem}
  .rs-body h2{font-size:1.24rem;margin-top:34px}
  .rs-quick{padding:18px 18px}
  .rs-quick p{font-size:.98rem}
  .rs-cta-btns .btn{width:100%;justify-content:center}
}