/* =====================================================================
   APHIS Design System v2 — "Công nghiệp sáng"
   Chốt 28/09/2026. Tiêu đề Fraunces (mềm, SOFT 50), nội dung Be Vietnam Pro.
   Nền trắng, ảnh thật toàn khổ, xanh dương logo #00508E làm màu hành động,
   teal #5FE0C4 chỉ dùng trên nền tối. File này là nguồn sự thật của v2.
   ===================================================================== */
@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght,SOFT,WONK@9..144,400..700,0..100,0..1&family=Be+Vietnam+Pro:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap");

:root{
  /* Màu thương hiệu (lấy từ logo) */
  --navy:#06193D; --ink:#0B1B2B; --blue:#00508E; --blue-700:#01408F; --blue-50:#E8F1F8;
  --teal:#02BC9A; --teal-600:#009C7E; --teal-light:#5FE0C4; --teal-pale:#9BF0DC;
  /* Trung tính */
  --body:#3F4B58; --muted:#66727F; --line:#E1E6EB; --line-strong:#C9D2DB;
  --bg:#FFFFFF; --band:#F2F5F7; --band-2:#E9EEF2;
  /* Trên nền tối */
  --on-dark:#FFFFFF; --on-dark-body:#DCE4EC; --on-dark-muted:#A9B8C8;
  /* Trạng thái */
  --ok:#0F7B5F; --warn:#9A6400; --warn-bg:#FFF6E5;

  --f-head:"Fraunces",Georgia,serif;
  --f-body:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",sans-serif;
  --r-sm:6px; --r:8px; --r-lg:12px;
  --shadow:0 1px 2px rgba(11,27,43,.06),0 6px 20px rgba(11,27,43,.06);
  --shadow-hover:0 2px 4px rgba(11,27,43,.08),0 16px 40px rgba(11,27,43,.12);
  --veil:linear-gradient(90deg,rgba(8,20,34,.9) 0%,rgba(8,20,34,.66) 45%,rgba(8,20,34,.12) 100%);
  --wrap:1200px; --gutter:24px;
}

/* ---------- Nền tảng ---------- */
*{box-sizing:border-box}
html{overflow-x:clip;scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;font-family:var(--f-body);font-size:17px;line-height:1.7;color:var(--body);background:var(--bg);-webkit-font-smoothing:antialiased;font-variant-numeric:lining-nums}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-family:var(--f-head);font-weight:500;letter-spacing:-.01em;line-height:1.2;font-variation-settings:"SOFT" 50,"WONK" 0}
h1{font-size:clamp(36px,5vw,64px);line-height:1.12}
h2{font-size:clamp(28px,3.4vw,42px)}
h3{font-size:21px;font-weight:600;line-height:1.3}
h4{font-family:var(--f-body);font-size:16px;font-weight:600;letter-spacing:0}
p{margin:0}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.sec{padding:88px 0}
.sec.tight{padding:64px 0}
.band{background:var(--band)}
.dark{background:var(--ink);color:var(--on-dark-body)}
.dark h2,.dark h3{color:var(--on-dark)}
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:14px;font-weight:600;color:var(--blue);margin-bottom:14px}
.kicker::before{content:"";width:22px;height:3px;border-radius:3px;background:currentColor}
.dark .kicker,.hero .kicker{color:var(--teal-pale)}
.lead{font-size:19px;max-width:640px;margin-top:16px}
.muted{color:var(--muted)}
.sec-head{display:flex;justify-content:space-between;align-items:end;gap:32px;margin-bottom:44px;flex-wrap:wrap}
.sec-head .lead{margin:0;max-width:440px}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

/* ---------- Nút ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 24px;border-radius:var(--r-sm);font:600 16px/1.2 var(--f-body);border:0;cursor:pointer;transition:background .15s,box-shadow .15s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-700)}
.btn-light{background:#fff;color:var(--blue)}
.btn-light:hover{background:var(--blue-50)}
.btn-outline{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line-strong)}
.btn-outline:hover{box-shadow:inset 0 0 0 1.5px var(--ink)}
.btn-ghost-dark{background:rgba(255,255,255,.1);color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.5)}
.btn-ghost-dark:hover{background:rgba(255,255,255,.18)}
.btn-zalo{background:#0068FF;color:#fff}
.btn-zalo:hover{background:#0056D6}
.link{font-weight:600;color:var(--blue);display:inline-flex;align-items:center;gap:6px}
.link:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header .nav{display:flex;align-items:center;gap:28px;height:76px}
.site-header .logo img{height:40px;width:auto}
.site-header nav ul{display:flex;gap:26px;list-style:none;margin:0;padding:0;font-size:15.5px;font-weight:500;color:var(--ink)}
.site-header nav{margin-left:auto}
.site-header nav a:hover,.site-header nav a[aria-current]{color:var(--blue)}
.site-header .phone{display:flex;align-items:center;gap:8px;font-weight:600;color:var(--ink);font-size:15px;white-space:nowrap}
.site-header .phone svg{width:18px;height:18px;color:var(--blue)}
.site-header .btn{padding:11px 20px;font-size:15px}
.site-header .lang{font-size:14px;color:var(--muted)}
.site-header .lang b{color:var(--ink)}
.menu-btn{display:none;background:none;border:0;padding:8px;margin-left:auto;color:var(--ink);cursor:pointer}
.menu-btn svg{width:26px;height:26px}
.drop{position:relative}
.drop>.sub{position:absolute;left:-18px;top:100%;padding-top:14px;display:none;min-width:280px}
.drop>.sub ul{display:grid;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-hover);padding:8px;list-style:none;margin:0}
.drop>.sub a{display:block;padding:9px 12px;border-radius:var(--r-sm);font-weight:500}
.drop>.sub a:hover{background:var(--band);color:var(--blue)}
.drop:hover>.sub,.drop:focus-within>.sub{display:block}

/* ---------- Hero ảnh toàn khổ ---------- */
.hero{position:relative;color:var(--on-dark-body);background:var(--ink);overflow:hidden}
.hero .bg{position:absolute;inset:0}
.hero .bg img{width:100%;height:100%;object-fit:cover}
.hero .bg::after{content:"";position:absolute;inset:0;background:var(--veil)}
.hero .in{position:relative;padding:112px 0 104px;max-width:720px}
.hero.home .in{padding:136px 0 124px}
.hero h1{color:#fff}
.hero h1 em{font-style:italic;color:var(--teal-light);font-variation-settings:"SOFT" 100,"WONK" 1}
.hero .lead{color:var(--on-dark-body);font-size:20px}
.hero .ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.crumbs{font-size:14px;color:var(--on-dark-muted);margin-bottom:22px;display:flex;gap:8px;flex-wrap:wrap}
.crumbs a:hover{color:#fff}
.trust{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:34px;font-size:15px;font-weight:500;color:#fff}
.trust span{display:flex;align-items:center;gap:8px}
.trust svg{width:20px;height:20px;color:var(--teal-light);flex:none}
.photo-note{position:absolute;right:16px;bottom:12px;font-size:11.5px;color:rgba(255,255,255,.6)}

/* ---------- Thẻ ngành ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.ind{background:#fff;border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}
.ind:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.ind .ph{aspect-ratio:16/10;overflow:hidden;background:var(--band-2)}
.ind .ph img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.ind:hover .ph img{transform:scale(1.04)}
.ind .tx{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.ind .who{font-size:13px;font-weight:600;color:var(--blue)}
.ind h3{font-size:19px;line-height:1.35}
.ind p{font-size:15px;color:var(--muted);line-height:1.55}
.ind .link{margin-top:auto;padding-top:6px;font-size:15px}
.ind.ask{background:var(--blue);color:#DCEBF7;padding:28px;justify-content:center;box-shadow:none}
.ind.ask h3{color:#fff;font-size:23px}
.ind.ask p{color:#D6E6F5;font-size:16px;margin:10px 0 22px}
.ind.ask .btn{align-self:flex-start}

/* ---------- Thẻ nội dung ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px}
.band .card{border-color:transparent;box-shadow:var(--shadow)}
.card .ic{width:44px;height:44px;border-radius:var(--r);background:var(--blue-50);color:var(--blue);display:grid;place-items:center;margin-bottom:18px}
.card .ic svg{width:22px;height:22px}
.card h3{font-size:20px}
.card p{margin-top:8px;font-size:16px;color:var(--muted)}
.card .note{margin-top:14px;font-size:14px;color:var(--warn);background:var(--warn-bg);border-radius:var(--r-sm);padding:8px 12px}
.pain{border-left:3px solid var(--blue);border-radius:0 var(--r) var(--r) 0}
.pain .q{font-family:var(--f-head);font-size:22px;font-weight:500;color:var(--ink);line-height:1.3;font-variation-settings:"SOFT" 50}
.pain p{margin-top:10px;font-size:16px;color:var(--muted)}

.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 16px;font-size:15px;font-weight:500;color:var(--ink)}
.band .chips span{border-color:transparent;box-shadow:var(--shadow)}
.chips.green span{background:#EAF6F1;border-color:#EAF6F1;color:var(--ok);font-weight:600}

/* ---------- Bước ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.steps.s3{grid-template-columns:repeat(3,1fr)}
.step{background:var(--band);border-radius:var(--r);padding:26px 24px}
.band .step{background:#fff;box-shadow:var(--shadow)}
.step .n{width:44px;height:44px;border-radius:var(--r-sm);background:var(--blue);color:#fff;font:600 20px/44px var(--f-head);text-align:center;margin-bottom:18px}
.step h3{font-size:19px}
.step p{font-size:15px;color:var(--muted);margin-top:8px;line-height:1.6}

/* ---------- Trích dẫn / dải CTA ---------- */
.quote{background:var(--blue);color:#D6E6F5;border-radius:var(--r-lg);padding:40px 44px;display:flex;gap:24px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-top:44px}
.quote p{font-family:var(--f-head);font-size:clamp(21px,2.4vw,28px);font-weight:500;line-height:1.35;color:#fff;max-width:760px;font-variation-settings:"SOFT" 50}
.quote p em{font-style:italic;color:var(--teal-pale);font-variation-settings:"SOFT" 100,"WONK" 1}
.cta-band{position:relative;background:var(--ink);color:var(--on-dark-body);overflow:hidden}
.cta-band .bg{position:absolute;inset:0;opacity:.35}
.cta-band .bg img{width:100%;height:100%;object-fit:cover}
.cta-band .in{position:relative;padding:88px 0;text-align:center;max-width:760px;margin:0 auto}
.cta-band h2{color:#fff}
.cta-band p{margin-top:14px;font-size:18px}
.cta-band .ctas{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:30px}

/* ---------- Ảnh + chữ ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split .photo{border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/5}
.split .photo img{width:100%;height:100%;object-fit:cover}
.fig3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.fig3 figure{margin:0}
.fig3 .ph{border-radius:var(--r);overflow:hidden;aspect-ratio:3/4}
.fig3 img{width:100%;height:100%;object-fit:cover}
.fig3 figcaption{font-size:14px;font-weight:600;color:var(--ink);margin-top:10px;line-height:1.4}
.fig3 figcaption span{display:block;font-weight:400;color:var(--muted);font-size:13px}
.facts{list-style:none;padding:0;margin:28px 0 0;display:grid;gap:16px}
.facts li{display:flex;gap:14px;align-items:flex-start}
.facts .ic{width:40px;height:40px;border-radius:var(--r);background:var(--blue-50);color:var(--blue);display:grid;place-items:center;flex:none}
.facts .ic svg{width:20px;height:20px}
.facts b{display:block;color:var(--ink)}
.facts span{font-size:15px;color:var(--muted)}

/* ---------- Sản phẩm ---------- */
.prod{background:#fff;border-radius:var(--r-lg);padding:32px;display:grid;grid-template-columns:150px 1fr;gap:28px;align-items:start;box-shadow:var(--shadow)}
.prod .sw{aspect-ratio:1;border-radius:var(--r);overflow:hidden}
.prod .sw img{width:100%;height:100%;object-fit:cover}
.prod .sw.pending{display:grid;place-items:center;text-align:center;font-size:13px;line-height:1.4;color:var(--muted);font-weight:600;background:var(--band);border:2px dashed var(--line-strong)}
.prod .tag{display:inline-block;font-size:13px;font-weight:600;color:var(--blue);background:var(--blue-50);border-radius:999px;padding:4px 12px;margin-bottom:10px}
.prod h3{font-size:26px}
.prod p{margin-top:8px;font-size:16px}
.prod .chips{margin-top:16px}
.prod .chips span{font-size:14px;padding:5px 12px;background:var(--band);border-color:var(--band)}

/* ---------- Hồ sơ ---------- */
.doclist{list-style:none;padding:0;margin:28px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.doclist li{display:flex;gap:12px;align-items:center;background:var(--band);border-radius:var(--r-sm);padding:14px 16px;font-weight:500;color:var(--ink);font-size:15px;line-height:1.4}
.band .doclist li,.tech .doclist li{background:#fff;box-shadow:var(--shadow)}
.doclist svg{width:22px;height:22px;color:var(--blue);flex:none}

/* ---------- Tầng kỹ thuật ---------- */
.tech{background:var(--band);border-top:1px solid var(--line)}
.tech-head{display:flex;gap:16px;align-items:center;margin-bottom:28px;flex-wrap:wrap}
.tech-head .badge{font-size:13px;font-weight:600;color:#fff;background:var(--ink);border-radius:999px;padding:5px 14px}
details.acc{background:#fff;border-radius:var(--r);box-shadow:var(--shadow);margin-bottom:14px}
details.acc>summary{list-style:none;cursor:pointer;padding:22px 26px;display:flex;justify-content:space-between;align-items:center;gap:16px;font:500 21px/1.3 var(--f-head);color:var(--ink);font-variation-settings:"SOFT" 50}
details.acc>summary::-webkit-details-marker{display:none}
details.acc>summary::after{content:"";width:12px;height:12px;border-right:2px solid var(--blue);border-bottom:2px solid var(--blue);transform:rotate(45deg);transition:transform .2s;flex:none;margin-top:-6px}
details.acc[open]>summary::after{transform:rotate(-135deg);margin-top:6px}
details.acc .body{padding:0 26px 26px;font-size:16px}
details.acc .body p+p{margin-top:12px}
table.spec{width:100%;border-collapse:collapse;font-size:15px}
table.spec th,table.spec td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--line);vertical-align:top}
table.spec th{font-weight:600;color:var(--ink);background:var(--band);font-size:14px}
table.spec td:first-child{font-weight:600;color:var(--ink);width:34%}
.tablewrap{overflow-x:auto}

/* ---------- FAQ ---------- */
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:20px 0;display:flex;justify-content:space-between;gap:16px;font-weight:600;color:var(--ink);font-size:17px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:400 26px/1 var(--f-body);color:var(--blue)}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 0 20px;color:var(--body)}

/* ---------- Liên hệ ---------- */
.contact-card{background:#fff;border-radius:var(--r-lg);box-shadow:var(--shadow-hover);display:grid;grid-template-columns:1fr 1.1fr;overflow:hidden}
.contact-card .l{background:var(--ink);color:var(--on-dark-body);padding:48px 44px;display:flex;flex-direction:column;gap:18px}
.contact-card .l h2{color:#fff}
.contact-card .l .btn{align-self:flex-start}
.contact-card .l .ph-line{display:flex;gap:10px;align-items:center;color:#fff;font-weight:600;font-size:20px}
.contact-card .l small{font-size:14px;color:var(--on-dark-muted);line-height:1.8}
.contact-card .l small a{display:inline-block;padding:3px 0;color:#fff;text-decoration:underline;text-underline-offset:3px}
.contact-card form{padding:44px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600;color:var(--ink)}
.field.full{grid-column:1/-1}
.field input,.field select,.field textarea{font:inherit;font-weight:400;font-size:16px;padding:12px 14px;border-radius:var(--r-sm);border:1.5px solid var(--line);background:#fff;color:var(--ink)}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-50)}
.opt{display:flex;gap:10px;flex-wrap:wrap;grid-column:1/-1}
.opt label{display:flex;gap:8px;align-items:center;font-size:15px;border:1.5px solid var(--line);border-radius:999px;padding:8px 14px;cursor:pointer}
.contact-card form .btn{grid-column:1/-1;justify-self:start}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--on-dark-muted);padding:60px 0 32px;font-size:15px}
.site-footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.site-footer h4{color:#fff;margin:0 0 14px;font-size:15px}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.site-footer a:hover{color:#fff}
.site-footer .credits{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:12.5px;line-height:1.6;color:#7F90AE}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .grid-4,.steps{grid-template-columns:repeat(2,1fr)}
  .site-header nav,.site-header .lang{display:none}
  .menu-btn{display:block}
  .site-header.open nav{display:block;position:absolute;left:0;right:0;top:76px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-hover);padding:12px var(--gutter) 20px;max-height:calc(100vh - 76px);max-height:calc(100dvh - 76px);overflow-y:auto;overscroll-behavior:contain}
  .site-header.open nav ul{flex-direction:column;gap:0}
  .site-header.open nav li>a{display:block;padding:12px 0;border-bottom:1px solid var(--line)}
  .site-header.open .drop>.sub{display:block;position:static;padding:0 0 8px 12px;min-width:0}
  .site-header.open .drop>.sub ul{box-shadow:none;border:0;padding:0}
}
@media (max-width:860px){
  .sec{padding:64px 0}
  .split,.grid-3,.grid-2,.contact-card,.steps.s3{grid-template-columns:1fr}
  .split .photo{aspect-ratio:16/10}
  .hero .in,.hero.home .in{padding:84px 0 76px}
  .hero .bg::after{background:linear-gradient(180deg,rgba(8,20,34,.72) 0%,rgba(8,20,34,.84) 100%)}
  .hero .lead{font-size:17.5px}
  .site-footer .cols{grid-template-columns:1fr 1fr}
  .site-header .phone{display:none}
  .prod{grid-template-columns:96px 1fr;padding:24px;gap:18px}
}
@media (max-width:560px){
  :root{--gutter:16px}
  .grid-4,.steps,.doclist,.fig3{grid-template-columns:1fr}
  .fig3 .ph{aspect-ratio:16/10}
  .contact-card form{grid-template-columns:1fr;padding:28px 20px}
  .contact-card .l{padding:32px 20px}
  .quote{padding:28px 22px}
  .site-header .nav{gap:12px}
  .site-header .logo img{height:32px}
  .site-header .btn{padding:10px 14px;font-size:14px}
  .prod{grid-template-columns:1fr}
  .prod .sw{aspect-ratio:16/9}
  .btn{white-space:normal}
  .card{padding:22px}
  details.acc>summary{padding:18px 20px;font-size:19px}
  details.acc .body{padding:0 20px 22px}
}

/* ---------- Hero gọn (trang phụ, blog) ---------- */
.page-hero{background:var(--band);border-bottom:1px solid var(--line)}
.page-hero .in{padding:64px 0 56px;max-width:780px}
.page-hero .crumbs{color:var(--muted)}
.page-hero .crumbs a:hover{color:var(--blue)}
.page-hero .lead{font-size:19px}

/* ---------- Blog ---------- */
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{background:#fff;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.post-card .ph{aspect-ratio:16/9;overflow:hidden;background:var(--band-2)}
.post-card .ph img{width:100%;height:100%;object-fit:cover}
.post-card .tx{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card .meta{font-size:13px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}
.post-card .meta .cat{color:var(--blue);font-weight:600}
.post-card h3{font-size:20px;line-height:1.35}
.post-card p{font-size:15px;color:var(--muted);line-height:1.6}
.post-card .link{margin-top:auto;font-size:15px}
.post-card.feature{grid-column:1/-1;display:grid;grid-template-columns:1.2fr 1fr}
.post-card.feature .ph{aspect-ratio:auto;min-height:320px}
.post-card.feature .tx{padding:36px;justify-content:center}
.post-card.feature h3{font-size:clamp(24px,2.6vw,32px)}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px}
.filters button{font:500 15px/1 var(--f-body);background:#fff;border:1.5px solid var(--line);color:var(--ink);border-radius:999px;padding:9px 16px;cursor:pointer}
.filters button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}

.article-hero .meta{display:flex;gap:14px;flex-wrap:wrap;font-size:14px;color:var(--muted);margin-top:20px}
.article-hero .meta .cat{color:var(--blue);font-weight:600}
.article-cover{max-width:980px;margin:-1px auto 0;padding:0 var(--gutter)}
.article-cover img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:0 0 var(--r-lg) var(--r-lg)}
.article-cover figcaption{font-size:13px;color:var(--muted);margin-top:8px}
.article-layout{display:grid;grid-template-columns:minmax(0,720px) 260px;gap:64px;justify-content:center;padding:56px var(--gutter) 88px;max-width:var(--wrap);margin:0 auto}
.prose{font-size:18px;line-height:1.8;color:var(--body)}
.prose>*+*{margin-top:1.1em}
.prose h2{font-size:clamp(24px,2.6vw,30px);margin-top:1.9em}
.prose h3{font-size:21px;margin-top:1.6em}
.prose ul,.prose ol{padding-left:1.3em}
.prose li+li{margin-top:.45em}
.prose a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.prose strong{color:var(--ink)}
.prose blockquote{margin:1.6em 0;padding:4px 0 4px 22px;border-left:3px solid var(--blue);font-family:var(--f-head);font-size:22px;line-height:1.45;color:var(--ink);font-variation-settings:"SOFT" 50}
.prose .callout{background:var(--blue-50);border-radius:var(--r);padding:20px 22px;font-size:16px;line-height:1.7}
.prose .callout.warn{background:var(--warn-bg)}
.prose .callout b{display:block;color:var(--ink);margin-bottom:4px}
.prose table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto}
.prose th,.prose td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{background:var(--band);color:var(--ink);font-weight:600}
.prose figure{margin:1.6em 0}
.prose figure img{border-radius:var(--r)}
.prose figcaption{font-size:14px;color:var(--muted);margin-top:8px}
.toc{position:sticky;top:100px;align-self:start;font-size:14.5px}
.toc b{display:block;color:var(--ink);margin-bottom:10px}
.toc ol{margin:0;padding:0 0 0 18px;display:grid;gap:8px;color:var(--muted)}
.toc a:hover{color:var(--blue)}
.toc .side-cta{margin-top:28px;background:var(--ink);color:var(--on-dark-body);border-radius:var(--r);padding:22px}
.toc .side-cta b{color:#fff;font-family:var(--f-head);font-weight:500;font-size:19px;line-height:1.3;margin-bottom:8px}
.toc .side-cta p{font-size:14px;margin-bottom:14px}
.toc .side-cta .btn{padding:11px 16px;font-size:14.5px;width:100%}
.related{border-top:1px solid var(--line)}

@media (max-width:1024px){
  .posts{grid-template-columns:repeat(2,1fr)}
  .posts.latest>:nth-child(3),.related .posts>:nth-child(3){display:none}
  .article-layout{grid-template-columns:minmax(0,720px);gap:0}
  .toc{display:none}
}
@media (max-width:760px){
  .posts{grid-template-columns:1fr}
  .posts.latest>:nth-child(3),.related .posts>:nth-child(3){display:flex}
  .post-card.feature{grid-template-columns:1fr}
  .post-card.feature .ph{min-height:0;aspect-ratio:16/9}
  .post-card.feature .tx{padding:22px}
  .article-cover{padding:0}
  .article-cover img{border-radius:0;aspect-ratio:16/9}
  .article-cover figcaption{padding:0 var(--gutter)}
  .prose{font-size:17px}
  .page-hero .in{padding:48px 0 40px}
}

/* Tablet: thẻ trong lưới 3 cột xếp ngang (ảnh trái, chữ phải) thay vì ảnh cao chiếm cả màn */
@media (min-width:561px) and (max-width:860px){
  .grid-3:has(>.card:nth-child(4)),.grid-2:has(>.card:nth-child(3)){grid-template-columns:repeat(2,1fr)}
  .grid-3>.ind{flex-direction:row}
  .grid-3>.ind .ph{width:38%;flex:none;aspect-ratio:auto;min-height:170px}
  .grid-3>.post-card,.posts>.post-card:not(.feature){flex-direction:column}
}

/* Điện thoại: bảng 3+ cột cuộn ngang thay vì bóp chữ; thẻ ngành trong lưới 4 xếp ngang, ảnh nhỏ */
@media (max-width:560px){
  .tablewrap{margin:0 calc(var(--gutter) * -1);padding:0 var(--gutter);-webkit-overflow-scrolling:touch}
  details.acc .tablewrap{margin:0;padding:0}
  table.spec:has(th:nth-child(3)){min-width:560px}
  .prose table:has(th:nth-child(3)) th,.prose table:has(th:nth-child(3)) td{min-width:140px}
  .grid-4>.ind:not(.ask),.grid-3>.ind:not(.ask){flex-direction:row;align-items:stretch}
  .grid-4>.ind:not(.ask) .ph,.grid-3>.ind:not(.ask) .ph{width:112px;flex:none;aspect-ratio:auto;min-height:0}
  .grid-4>.ind:not(.ask) .tx,.grid-3>.ind:not(.ask) .tx{padding:14px 16px 16px;gap:6px}
  .grid-4>.ind:not(.ask) h3,.grid-3>.ind:not(.ask) h3{font-size:17px}
  .grid-4>.ind:not(.ask) p{font-size:14px}
}
/* Thẻ ngang: ảnh phủ khung, không để ảnh dọc kéo cao thẻ */
@media (max-width:860px){
  .grid-3>.ind .ph,.grid-4>.ind .ph{position:relative}
}
@media (min-width:561px) and (max-width:860px){
  .grid-3>.ind .ph img{position:absolute;inset:0}
}
@media (max-width:560px){
  .grid-3>.ind:not(.ask) .ph img,.grid-4>.ind:not(.ask) .ph img{position:absolute;inset:0}
}

.form-msg{grid-column:1/-1;margin:0;padding:12px 14px;border-radius:var(--r-sm);background:var(--warn-bg);color:#6b4600;font-size:15px}
.form-msg a{color:var(--blue);font-weight:600;text-decoration:underline}
button[disabled]{opacity:.6;cursor:wait}

/* Cân dòng: tiêu đề chia đều các dòng, đoạn văn tránh dòng cuối lẻ loi (typo.py lo phần còn lại) */
h1,h2,h3,h4,.pain .q,.quote p,.cta-band h2,summary{text-wrap:balance}
p,li,td,figcaption,.lead,.prose{text-wrap:pretty}

/* ---------- Bảng thông số theo nhóm (trang sản phẩm) ---------- */
.params-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:64px;align-items:start}
.params-intro{position:sticky;top:108px}
.params-intro .lead{margin-bottom:28px}
.params-intro .btn{margin-top:24px}
.tradeoff{background:#fff;border-radius:var(--r-lg);box-shadow:var(--shadow);padding:22px 24px 18px}
.tr-scale{display:flex;justify-content:space-between;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:14px}
.tr-scale span:first-child::before{content:"← "}
.tr-scale span:last-child::after{content:" →"}
.tr-row{display:grid;gap:6px;margin-bottom:14px}
.tr-label{font-size:15px;font-weight:600;color:var(--ink)}
.tr-bar{height:10px;border-radius:999px}
.tr-bar.to-fine{background:linear-gradient(90deg,var(--blue) 0%,#6FA3CC 55%,var(--blue-50) 100%)}
.tr-bar.to-coarse{background:linear-gradient(90deg,#E6F7F2 0%,#5FC9B0 45%,var(--teal-600) 100%)}
.tr-note{font-size:14px;color:var(--muted);margin-top:4px}
.params-groups{display:grid;gap:20px}
.pgroup{background:#fff;border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden}
.pgroup-head{display:flex;gap:16px;align-items:center;padding:22px 26px;border-bottom:1px solid var(--line)}
.pg-ic{width:46px;height:46px;border-radius:var(--r);background:var(--blue);color:#fff;display:grid;place-items:center;flex:none}
.pg-ic svg{width:22px;height:22px}
.pgroup-head h3{font-size:21px}
.pgroup-head p{font-size:14.5px;color:var(--muted);margin-top:2px}
.pg-count{margin-left:auto;font-size:13px;font-weight:600;color:var(--blue);background:var(--blue-50);border-radius:999px;padding:4px 12px;white-space:nowrap}
.plist{list-style:none;margin:0;padding:0}
.plist li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 16px;padding:18px 26px;border-bottom:1px solid var(--line)}
.plist li:last-child{border-bottom:0}
.pname{font-family:var(--f-head);font-size:19px;font-weight:600;color:var(--ink);font-variation-settings:"SOFT" 50;line-height:1.3}
.pname sub,.pdesc sub{font-size:.68em;vertical-align:-.25em;line-height:0}
.ptags{display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end;align-self:start}
.ptags span{font-size:12.5px;font-weight:600;color:var(--ok);background:#EAF6F1;border-radius:999px;padding:3px 10px;white-space:nowrap}
.pdesc{grid-column:1/-1;font-size:15.5px;color:var(--muted);line-height:1.6}
.pnote{display:flex;gap:14px;align-items:flex-start;background:var(--blue-50);border-radius:var(--r-lg);padding:18px 22px;font-size:15px}
.pnote svg{width:22px;height:22px;color:var(--blue);flex:none;margin-top:2px}
@media (max-width:1024px){
  .params-grid{grid-template-columns:1fr;gap:36px}
  .params-intro{position:static;display:grid;grid-template-columns:1fr 1fr;gap:0 40px;align-items:start}
  .params-intro>.kicker,.params-intro>h2,.params-intro>.lead{grid-column:1}
  .params-intro .tradeoff{grid-column:2;grid-row:1/span 3;align-self:end}
  .params-intro .btn{grid-column:1/-1;justify-self:start}
}
@media (max-width:760px){
  .params-intro{display:block}
  .plist li{grid-template-columns:1fr;padding:16px 20px}
  .ptags{justify-content:flex-start;order:3}
  .pdesc{order:2}
  .pgroup-head{padding:18px 20px}
  .pg-count{display:none}
}