/* ===== Self-hosted Inter (latin + vietnamese) + IBM Plex Mono for data ===== */
@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/inter-400-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;}
@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/inter-400-viet.woff2') format('woff2');unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;}
@font-face{font-family:'Inter';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/inter-500-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;}
@font-face{font-family:'Inter';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/inter-500-viet.woff2') format('woff2');unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;}
@font-face{font-family:'Inter';font-style:normal;font-weight:600;font-display:swap;src:url('../fonts/inter-600-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;}
@font-face{font-family:'Inter';font-style:normal;font-weight:600;font-display:swap;src:url('../fonts/inter-600-viet.woff2') format('woff2');unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;}
@font-face{font-family:'Inter';font-style:normal;font-weight:700;font-display:swap;src:url('../fonts/inter-700-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;}
@font-face{font-family:'Inter';font-style:normal;font-weight:700;font-display:swap;src:url('../fonts/inter-700-viet.woff2') format('woff2');unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/mono-400-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/mono-400-viet.woff2') format('woff2');unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/mono-500-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/mono-500-viet.woff2') format('woff2');unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:600;font-display:swap;src:url('../fonts/mono-600-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:600;font-display:swap;src:url('../fonts/mono-600-viet.woff2') format('woff2');unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;}

/* ==========================================================================
   K&K Chemical & Instruments — shared site stylesheet
   Light theme, white background. Brand navy #000032 used only on bands
   (utility bar, stat band, CTA band, footer) — never as the page ground.
   Design tokens match the product-page template so the whole site is one system.
   Fonts: Inter (headings/body) + IBM Plex Mono (data/labels).
   ========================================================================== */

:root{
  --bg:#ffffff;
  --bg-inset:#f2f4fa;
  --surface:#ffffff;
  --border:#e0e4f0;
  --border-strong:#c7cce3;
  --text:#0b0c1a;
  --text-muted:#565c74;
  --brand-surface:#000032;
  --brand-surface-2:#0b0d3d;
  --on-brand:#ffffff;
  --on-brand-muted:#a9adcf;
  --accent:#2f5fe0;
  --accent-hover:#1f3fb8;
  --accent-contrast:#ffffff;
  --accent-soft:#e8edfc;
  --focus:#2f5fe0;
  --shadow:0 1px 2px rgba(0,0,50,.06), 0 8px 24px rgba(0,0,50,.06);
  --shadow-lg:0 2px 4px rgba(0,0,50,.06), 0 18px 48px rgba(0,0,50,.10);
  --maxw:1180px;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',-apple-system,'Segoe UI',sans-serif;
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block;}
a{color:inherit;}
.mono{font-family:'IBM Plex Mono',ui-monospace,monospace;font-variant-numeric:tabular-nums;}
h1,h2,h3,h4{font-weight:600;text-wrap:balance;margin:0;letter-spacing:-.01em;}
p{margin:0;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;}

.eyebrow{
  font-family:'Inter',-apple-system,'Segoe UI',sans-serif;font-weight:600;
  font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);
}
.section{padding:72px 0;}
.section-head{max-width:60ch;margin-bottom:36px;}
.section-head h2{font-size:2.2rem;line-height:1.12;margin:8px 0 12px;letter-spacing:-.02em;}
.section-head p{color:var(--text-muted);font-size:1.02rem;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;border-radius:8px;font-weight:600;
  font-size:.9rem;padding:12px 22px;border:1px solid transparent;cursor:pointer;
  text-decoration:none;white-space:nowrap;
  transition:background .15s ease, border-color .15s ease, color .15s ease, transform .1s ease;
}
.btn:active{transform:translateY(1px);}
.btn-accent{background:var(--accent);color:var(--accent-contrast);}
.btn-accent:hover{background:var(--accent-hover);}
.btn-outline{background:transparent;border-color:var(--border-strong);color:var(--text);}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);}
.btn-ghost{background:transparent;color:var(--text-muted);padding:12px 4px;}
.btn-ghost:hover{color:var(--accent);}
.btn-sm{padding:8px 14px;font-size:.8rem;}
.btn-lg{padding:14px 26px;font-size:.98rem;}

/* ---------- utility bar ---------- */
.utility{background:var(--brand-surface);color:var(--on-brand-muted);font-size:.78rem;}
.utility .wrap{display:flex;justify-content:space-between;align-items:center;height:36px;gap:24px;}
.utility .badge{
  color:var(--on-brand);font-family:'IBM Plex Mono',ui-monospace,monospace;
  letter-spacing:.03em;font-size:.72rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.utility .links{display:flex;gap:20px;white-space:nowrap;align-items:center;}
.utility .links a{text-decoration:none;color:var(--on-brand-muted);}
.utility .links a:hover{color:var(--on-brand);}
.utility .lang{display:flex;gap:6px;align-items:center;}
.utility .lang a{padding:1px 5px;border-radius:4px;}
.utility .lang a.active{background:rgba(255,255,255,.14);color:#fff;}
.utility .links span.wide{display:inline;}
@media (max-width:640px){.utility .links span.wide{display:none;}}

/* ---------- header ---------- */
header.site{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40;}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:76px;gap:32px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.3rem;letter-spacing:-.02em;color:var(--text);text-decoration:none;}
.logo .mark{
  width:34px;height:34px;border-radius:8px;background:var(--brand-surface);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:.95rem;
  font-weight:700;font-family:'IBM Plex Mono',ui-monospace,monospace;flex-shrink:0;
}
.logo .logo-img{height:52px;width:auto;display:block;flex-shrink:0;}
.logo small{
  display:block;font-family:'IBM Plex Mono',ui-monospace,monospace;font-weight:400;
  font-size:.62rem;letter-spacing:.08em;color:var(--text-muted);text-transform:uppercase;
}
nav.primary{display:flex;gap:28px;font-size:.92rem;font-weight:500;flex:1;justify-content:center;}
nav.primary a{text-decoration:none;color:var(--text-muted);position:relative;padding:4px 0;}
nav.primary a.active{color:var(--text);}
nav.primary a.active::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--accent);}
nav.primary a:hover{color:var(--text);}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--border);border-radius:8px;background:transparent;cursor:pointer;color:var(--text);align-items:center;justify-content:center;}

/* mobile nav */
@media (max-width:940px){
  nav.primary{
    position:absolute;top:76px;left:0;right:0;background:var(--surface);
    border-bottom:1px solid var(--border);flex-direction:column;gap:0;padding:8px 0;
    justify-content:flex-start;display:none;box-shadow:var(--shadow);
  }
  nav.primary.open{display:flex;}
  nav.primary a{padding:13px 32px;width:100%;}
  nav.primary a.active::after{display:none;}
  nav.primary a.active{color:var(--accent);}
  .nav-toggle{display:flex;}
  .header-actions .btn-quote-text{display:none;}
}

/* ---------- hero ---------- */
.hero{
  border-bottom:1px solid var(--border);overflow:hidden;position:relative;
  min-height:560px;display:flex;align-items:center;
  background-image:linear-gradient(rgba(244,246,252,.84), rgba(244,246,252,.84)), url('../img/paint_photo_indexpage.jpg');
  background-size:cover;background-position:center;background-repeat:no-repeat;
}
.hero .wrap{position:relative;display:block;padding-top:92px;padding-bottom:92px;text-align:center;}
.hero-text{max-width:940px;margin:0 auto;}
.hero-chip{
  display:inline-flex;align-items:center;gap:8px;background:var(--accent-soft);color:var(--accent);
  font-family:'Inter',-apple-system,'Segoe UI',sans-serif;font-weight:600;font-size:.72rem;letter-spacing:.06em;
  text-transform:uppercase;padding:7px 12px;border-radius:100px;margin-bottom:20px;
}
.hero h1{font-size:3rem;line-height:1.06;margin-bottom:18px;}
.hero .lead{font-size:1.15rem;color:var(--text-muted);max-width:52ch;margin-bottom:28px;}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px;justify-content:center;}
.hero-meta{display:flex;gap:26px;flex-wrap:wrap;font-size:.85rem;color:var(--text-muted);}
.hero-meta div{display:flex;align-items:center;gap:8px;}
.hero-meta svg{color:var(--accent);flex-shrink:0;}

.hero-visual{
  background:var(--bg-inset);border:1px solid var(--border);border-radius:18px;
  padding:30px;box-shadow:var(--shadow-lg);
}
.hero-visual svg{width:100%;height:auto;}

/* ---------- stat band (navy) ---------- */
.stat-band{background:var(--brand-surface);color:var(--on-brand);}
.stat-band .wrap{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;padding:44px 32px;}
/* enlarge the BYK logo everywhere it appears */
img[src$="byk.png"]{transform:scale(1.24);}
.stat-band .st{padding:6px 24px 6px 0;border-right:1px solid rgba(255,255,255,.14);}
.stat-band .st:last-child{border-right:none;}
.stat-band .num{font-family:'IBM Plex Mono',ui-monospace,monospace;font-weight:600;font-size:2rem;line-height:1;}
.stat-band .lbl{color:var(--on-brand-muted);font-size:.86rem;margin-top:8px;}

/* ---------- capability cards ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.cap-card{
  border:1px solid var(--border);border-radius:16px;padding:28px;background:var(--surface);
  transition:border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.cap-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow);transform:translateY(-2px);}
.cap-card .cap-photo{background:#fff;border:1px solid var(--border);border-radius:11px;height:170px;margin-bottom:18px;display:flex;align-items:center;justify-content:center;overflow:hidden;}
.cap-card .cap-photo img{max-width:100%;max-height:100%;object-fit:contain;padding:12px;}
.cap-card .ci{
  width:46px;height:46px;border-radius:11px;background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.cap-card h3{font-size:1.15rem;margin-bottom:10px;}
.cap-card p{color:var(--text-muted);font-size:.92rem;margin-bottom:14px;}
.cap-card a{color:var(--accent);text-decoration:none;font-weight:600;font-size:.88rem;}
.cap-card a:hover{text-decoration:underline;}

/* ---------- editorial "what we offer" list ---------- */
.offer-list{border-top:1px solid var(--border);max-width:840px;margin-left:auto;margin-right:auto;}
.offer-row{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:26px 4px;border-bottom:1px solid var(--border);text-decoration:none;color:var(--text);transition:background .15s ease;}
.offer-row:hover{background:var(--accent-soft);}
.offer-row .lc{display:flex;align-items:center;gap:18px;}
.offer-row .ci{flex-shrink:0;display:flex;align-items:center;color:var(--brand-surface);}
.offer-row h3{font-size:1.2rem;margin:0;line-height:1.15;}
.offer-row .go{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-weight:600;font-size:.95rem;white-space:nowrap;}
.offer-row .go svg{transition:transform .15s ease;}
.offer-row:hover .go svg{transform:translateX(4px);}

/* ---------- sales contact card (Zalo / phone) ---------- */
.sales-card{border:1px solid var(--border);border-radius:14px;padding:16px 18px;background:var(--bg-inset);}
.hero-sales{margin-top:20px;}
.sales-card .sc-title{font-family:'Inter',-apple-system,'Segoe UI',sans-serif;font-weight:600;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);margin-bottom:12px;display:flex;align-items:center;gap:7px;}
.sales-reps{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;}
.sales-rep{border:1px solid var(--border);border-radius:10px;padding:11px 13px;background:var(--surface);}
.sales-rep .rep-name{display:block;font-weight:600;font-size:.94rem;margin-bottom:9px;}
.rep-actions{display:flex;gap:8px;flex-wrap:wrap;}
.rep-actions .rep-btn.call{flex-basis:100%;justify-content:center;}
.rep-btn{display:inline-flex;align-items:center;gap:6px;font-size:.82rem;font-weight:600;padding:7px 14px;border-radius:100px;text-decoration:none;white-space:nowrap;}
.rep-btn.call{border:1px solid var(--border-strong);color:var(--text);}
.rep-btn.call:hover{border-color:var(--accent);color:var(--accent);}
.rep-btn.zalo{background:#0068ff;color:#fff;}
.rep-btn.zalo:hover{background:#0055d4;}
.rep-btn.email{border:1px solid var(--border-strong);color:var(--text);padding:7px 11px;}
.rep-btn.email:hover{border-color:var(--accent);color:var(--accent);}

/* ---------- variant selector (geometry 45/0 vs d/8) ---------- */
.variant-box{margin:16px 0 4px;}
.vs-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px;}
.vs-label{font-size:.85rem;color:var(--text-muted);font-weight:600;}
.vs-btn{border:1px solid var(--border-strong);background:var(--surface);color:var(--text);font-weight:600;font-size:.9rem;padding:7px 18px;border-radius:100px;cursor:pointer;transition:border-color .15s ease,background .15s ease,color .15s ease;}
.vs-btn:hover{border-color:var(--accent);color:var(--accent);}
.vs-btn.active{background:var(--accent);color:#fff;border-color:var(--accent);}
.vs-info{font-size:.88rem;color:var(--text-muted);}
.vs-info strong{color:var(--text);}

/* ---------- FAQ (AEO) ---------- */
.faq{max-width:820px;margin:0 auto;}
.faq-item{border:1px solid var(--border);border-radius:12px;margin-bottom:12px;background:var(--surface);}
.faq-item summary{cursor:pointer;padding:16px 20px;font-weight:600;font-size:1.02rem;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:1.5rem;line-height:1;color:var(--accent);font-weight:400;flex-shrink:0;}
.faq-item[open] summary::after{content:"\2013";}
.faq-item .faq-a{padding:0 20px 18px;color:var(--text-muted);line-height:1.7;font-size:.95rem;}

/* ---------- industries ---------- */
.ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.ind-card{
  border:1px solid var(--border);border-radius:14px;padding:22px;background:var(--surface);
  display:flex;gap:16px;align-items:flex-start;transition:border-color .15s ease, box-shadow .15s ease;
}
.ind-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow);}
.ind-card .ii{
  width:38px;height:38px;border-radius:9px;background:var(--brand-surface);color:#fff;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.ind-card h3{font-size:1rem;margin-bottom:5px;}
.ind-card p{color:var(--text-muted);font-size:.85rem;}

/* ---------- instruments feature band ---------- */
.feature-band{background:var(--bg-inset);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.feature-band .wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:64px 32px;}
.feature-band .eyebrow{color:var(--accent);}
.feature-band h2{font-size:1.8rem;line-height:1.15;margin:10px 0 14px;}
.feature-band p{color:var(--text-muted);margin-bottom:20px;max-width:48ch;}
.feature-list{list-style:none;padding:0;margin:0 0 24px;display:grid;gap:12px;}
.feature-list li{display:flex;gap:11px;align-items:flex-start;font-size:.94rem;}
.feature-list svg{color:var(--accent);flex-shrink:0;margin-top:3px;}
.feature-visual{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px;box-shadow:var(--shadow);}
.feature-visual svg{width:100%;height:auto;}
/* Awards gallery */
.awards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;}
.award-item{display:block;border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:var(--shadow);background:var(--surface);}
.award-item img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;transition:transform .3s ease;}
.award-item:hover img{transform:scale(1.05);}
@media (max-width:640px){.awards-grid{grid-template-columns:repeat(2,1fr);gap:10px;}}
/* Product search */
.search-wrap{position:relative;}
.search-input{width:100%;padding:14px 18px;font-size:1rem;border:1.5px solid var(--border);border-radius:12px;background:var(--surface);color:var(--text);box-shadow:var(--shadow);}
.search-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(47,95,224,.15);}
.search-results{position:absolute;top:calc(100% + 6px);left:0;right:0;background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-lg);z-index:50;max-height:380px;overflow-y:auto;}
.search-result{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:11px 16px;text-decoration:none;color:var(--text);border-bottom:1px solid var(--border);}
.search-result:last-child{border-bottom:none;}
.search-result:hover{background:var(--bg-inset);}
.sr-name{font-weight:600;font-size:.95rem;}
.sr-cat{font-size:.8rem;color:var(--text-muted);white-space:nowrap;}
.search-empty{padding:14px 16px;color:var(--text-muted);font-size:.9rem;}

/* ---------- logo wall (principals) ---------- */
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;}
.logo-cell{
  border:1px solid var(--border);border-radius:12px;background:var(--surface);
  height:104px;display:flex;align-items:center;justify-content:center;padding:22px;
  transition:border-color .15s ease, box-shadow .15s ease;
}
.logo-cell:hover{border-color:var(--border-strong);box-shadow:var(--shadow);}
.logo-cell img{max-height:100%;max-width:100%;width:auto;object-fit:contain;}
.logo-cell.text-logo{
  font-weight:700;font-size:1.15rem;color:var(--brand-surface);letter-spacing:-.01em;text-align:center;
}
.logo-cell.text-logo small{display:block;font-size:.6rem;font-weight:500;color:var(--text-muted);letter-spacing:.05em;margin-top:3px;font-family:'IBM Plex Mono',ui-monospace,monospace;}
.wall-foot{margin-top:26px;display:flex;justify-content:center;}

/* ---------- CTA band (navy) ---------- */
.cta-band{background:var(--brand-surface);color:var(--on-brand);}
.cta-band .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap;padding:60px 32px;}
.cta-band h2{color:#fff;font-size:1.7rem;max-width:30ch;}
.cta-band p{color:var(--on-brand-muted);margin-top:10px;max-width:46ch;font-size:.95rem;}
.cta-band .actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap;}
.cta-band .btn-outline{border-color:rgba(255,255,255,.35);color:#fff;}
.cta-band .btn-outline:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.06);}

/* ---------- footer ---------- */
footer{background:var(--brand-surface);color:var(--on-brand-muted);padding:52px 0 28px;font-size:.86rem;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;margin-bottom:38px;}
.footer-grid h4{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.07em;margin-bottom:14px;font-weight:600;}
.footer-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:9px;}
.footer-grid a{text-decoration:none;}
.footer-grid a:hover{color:#fff;}
.footer-brand p{max-width:36ch;margin-bottom:14px;}
.footer-badges{display:flex;gap:10px;flex-wrap:wrap;}
.footer-badges span{
  border:1px solid rgba(255,255,255,.18);border-radius:6px;padding:5px 9px;
  font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:.68rem;color:var(--on-brand-muted);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:22px;display:flex;
  justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:.78rem;
}
.footer-bottom a{text-decoration:none;margin-left:16px;}
.footer-bottom a:hover{color:#fff;}

/* ---------- suppliers page ---------- */
.page-head{background:var(--bg-inset);border-bottom:1px solid var(--border);}
.page-head .wrap{padding:52px 32px 46px;}
.page-head .crumbs{font-size:.82rem;color:var(--text-muted);margin-bottom:14px;}
.page-head .crumbs a{text-decoration:none;}
.page-head .crumbs a:hover{color:var(--accent);}
.page-head .crumbs .sep{margin:0 8px;opacity:.5;}
.page-head h1{font-size:2.3rem;margin-bottom:12px;}
.page-head p{color:var(--text-muted);max-width:60ch;font-size:1.05rem;}

.supplier-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.supplier-card{
  border:1px solid var(--border);border-radius:16px;background:var(--surface);padding:26px;
  display:grid;grid-template-columns:150px 1fr;gap:24px;align-items:start;
  transition:border-color .15s ease, box-shadow .15s ease;
}
.supplier-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow);}
.supplier-card.feat{border-color:var(--border-strong);border-top:3px solid var(--accent);background:var(--surface);}
.supplier-card.feat h3{display:flex;align-items:center;gap:8px;}
.supplier-card.feat h3::after{content:"Đối tác chính";font-family:'Inter',-apple-system,'Segoe UI',sans-serif;font-weight:600;font-size:.58rem;letter-spacing:.05em;text-transform:uppercase;color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:2px 8px;}
.supplier-card.feat.en h3::after{content:"Key partner";}
.supplier-logo{
  height:80px;border:1px solid var(--border);border-radius:10px;background:var(--surface);
  display:flex;align-items:center;justify-content:center;padding:16px;
}
.supplier-logo img{max-height:100%;max-width:100%;object-fit:contain;}
.supplier-logo.text-logo{font-weight:700;color:var(--brand-surface);font-size:1.05rem;text-align:center;}
.supplier-card h3{font-size:1.12rem;margin-bottom:6px;}
.supplier-card .cat{
  font-family:'Inter',-apple-system,'Segoe UI',sans-serif;font-weight:600;font-size:.68rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--accent);margin-bottom:10px;
}
.supplier-card p{color:var(--text-muted);font-size:.9rem;margin-bottom:12px;}
.supplier-tags{display:flex;flex-wrap:wrap;gap:6px;}
.supplier-tags span{font-size:.74rem;padding:4px 10px;border-radius:100px;background:var(--bg-inset);border:1px solid var(--border);color:var(--text-muted);}

/* ---------- responsive ---------- */
@media (max-width:940px){
  .hero{min-height:auto;background-image:linear-gradient(rgba(244,246,252,.88), rgba(244,246,252,.88)), url('../img/paint_photo_indexpage.jpg');}
  .hero .wrap{padding-top:56px;padding-bottom:56px;}
  .hero-text{max-width:none;}
  .hero h1{font-size:2.4rem;}
  .feature-band .wrap{grid-template-columns:1fr;gap:32px;}
  .cap-grid{grid-template-columns:1fr;}
  .ind-grid{grid-template-columns:repeat(2,1fr);}
  .stat-band .wrap{grid-template-columns:repeat(2,1fr);gap:24px 8px;}
  .stat-band .st:nth-child(2){border-right:none;}
  .logo-wall{grid-template-columns:repeat(4,1fr);}
  .supplier-list{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .wrap{padding:0 18px;}
  .section{padding:52px 0;}
  .hero h1{font-size:2rem;}
  .hero .lead{font-size:1.05rem;}
  .offer-row{flex-direction:column;align-items:flex-start;gap:10px;padding:20px 2px;}
  .offer-row h3{font-size:1.2rem;}
  .ind-grid{grid-template-columns:1fr;}
  .logo-wall{grid-template-columns:repeat(2,1fr);}
  .stat-band .wrap{padding:32px 18px;}
  .cta-band .wrap{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .supplier-card{grid-template-columns:1fr;gap:16px;}
  .supplier-logo{width:150px;}
}
@media (max-width:420px){
  .footer-grid{grid-template-columns:1fr;}
}

/* ---------- photo hero (home, full-bleed) — light + paint streaks ---------- */
.hero-photo{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden;background:#eef2fb;border-bottom:1px solid var(--border);}
.hp-bg{position:absolute;top:0;bottom:0;left:0;right:0;width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;}
.hp-bg svg{width:100%;height:100%;display:block;}
.hp-content{position:relative;z-index:1;text-align:left;color:var(--text);width:100%;padding-top:72px;padding-bottom:72px;}
.hp-content h1{font-size:3.4rem;line-height:1.06;font-weight:700;letter-spacing:-.025em;max-width:20ch;margin:0 0 16px;color:var(--text);text-wrap:balance;}
.hp-content .sub{font-size:1.3rem;color:var(--text-muted);margin:0 0 30px;}
.hp-content .btn{font-size:1.05rem;padding:15px 40px;box-shadow:0 8px 24px rgba(47,95,224,.28);}
@media (max-width:640px){.hp-bg{padding:0 18px;}.hp-content{padding-top:56px;padding-bottom:56px;}.hp-content h1{font-size:2.1rem;}.hp-content .sub{font-size:1.05rem;}}

/* ---------- newsletter opt-in band ---------- */
.newsletter{background:var(--bg-inset);border-top:1px solid var(--border);}
.newsletter .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap;padding:34px 32px;}
.newsletter h3{font-size:1.2rem;margin-bottom:5px;}
.newsletter p{color:var(--text-muted);font-size:.92rem;max-width:48ch;}
.nl-form{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.nl-form input[type=email]{font:inherit;font-size:.92rem;padding:12px 14px;border:1px solid var(--border-strong);border-radius:8px;background:#fff;color:var(--text);min-width:260px;}
.nl-form input[type=email]:focus{outline:2px solid var(--focus);outline-offset:1px;border-color:var(--accent);}
.nl-done{color:var(--accent);font-weight:600;display:flex;align-items:center;gap:8px;}
@media (max-width:640px){
  .newsletter .wrap{flex-direction:column;align-items:flex-start;}
  .nl-form{width:100%;}
  .nl-form input[type=email]{flex:1;min-width:0;}
}

/* ---------- footer columns (brand/contact + link columns) ---------- */
.footer-cols{display:grid;grid-template-columns:1.9fr 1fr 1fr 1fr;gap:40px;margin-bottom:36px;}
.footer-cols .footer-brand .fi-name{color:#fff;font-weight:600;font-size:1rem;margin-bottom:12px;}
.footer-cols .footer-brand p{color:var(--on-brand-muted);font-size:.88rem;line-height:1.65;margin-bottom:10px;max-width:44ch;}
.footer-cols .footer-brand a{color:var(--on-brand-muted);text-decoration:none;}
.footer-cols .footer-brand a:hover{color:#fff;}
.footer-cols h4{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.07em;margin-bottom:15px;font-weight:600;}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:11px;}
.footer-col a{color:var(--on-brand-muted);text-decoration:none;font-size:.9rem;}
.footer-col a:hover{color:#fff;}
@media (max-width:940px){.footer-cols{grid-template-columns:1fr 1fr;gap:30px;}}
@media (max-width:560px){.footer-cols{grid-template-columns:1fr;}}

/* ---------- footer contact band (map + details) — legacy, kept for reference ---------- */
.footer-contact{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:stretch;margin-bottom:34px;}
.footer-map{border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.14);background:var(--brand-surface-2);min-height:330px;}
.footer-map iframe{width:100%;height:100%;min-height:330px;border:0;display:block;filter:grayscale(.1);}
.footer-info{align-self:center;}
.footer-info h4{color:#fff;font-size:1.3rem;letter-spacing:-.01em;margin-bottom:20px;}
.footer-info .fi-name{color:#fff;font-weight:600;font-size:1.02rem;margin-bottom:14px;}
.footer-info p{color:var(--on-brand-muted);margin-bottom:14px;max-width:48ch;line-height:1.65;font-size:.92rem;}
.footer-info a{color:var(--on-brand-muted);text-decoration:none;}
.footer-info a:hover{color:#fff;}
.footer-info .fi-badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px;}
.footer-info .fi-badges span{border:1px solid rgba(255,255,255,.18);border-radius:6px;padding:5px 9px;font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:.66rem;}

/* ---------- contact page ---------- */
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start;}
.contact-form{display:grid;gap:16px;}
.form-row{display:grid;gap:16px;grid-template-columns:1fr 1fr;}
.field{display:flex;flex-direction:column;gap:6px;}
.field label{font-size:.82rem;font-weight:500;color:var(--text);}
.field label .req{color:var(--accent);}
.field input,.field select,.field textarea{
  font:inherit;font-size:.92rem;padding:11px 13px;border:1px solid var(--border-strong);
  border-radius:8px;background:var(--surface);color:var(--text);width:100%;
}
.field textarea{min-height:140px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--focus);outline-offset:1px;border-color:var(--accent);}
.form-note{font-size:.8rem;color:var(--text-muted);}
.contact-info-card{background:var(--bg-inset);border:1px solid var(--border);border-radius:16px;padding:28px;}
.contact-info-card h3{font-size:1.1rem;margin-bottom:6px;}
.contact-info-card .lead-sm{color:var(--text-muted);font-size:.9rem;margin-bottom:8px;}
.ci-row{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--border);}
.ci-row:last-child{border-bottom:none;}
.ci-ic{width:38px;height:38px;border-radius:9px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.ci-lbl{font-size:.72rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:3px;}
.ci-val{font-size:.95rem;color:var(--text);line-height:1.5;}
.ci-val a{color:var(--text);text-decoration:none;}
.ci-val a:hover{color:var(--accent);}

@media (max-width:940px){
  .footer-contact{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .form-row{grid-template-columns:1fr;}
}

/* ---------- about page ---------- */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:start;}
.split .prose p{color:var(--text-muted);margin-bottom:16px;max-width:62ch;}
.split .prose h2{font-size:1.7rem;margin-bottom:16px;}
.facts-card{background:var(--bg-inset);border:1px solid var(--border);border-radius:16px;padding:26px;}
.facts-card h3{font-size:1rem;margin-bottom:14px;}
.facts-row{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid var(--border);font-size:.88rem;}
.facts-row:last-child{border-bottom:none;}
.facts-row span:first-child{color:var(--text-muted);}
.facts-row span:last-child{font-weight:500;text-align:right;}
.timeline{list-style:none;margin:0;padding:0;display:grid;gap:22px;}
.timeline li{display:grid;grid-template-columns:92px 1fr;gap:20px;align-items:start;}
.timeline .yr{font-family:'IBM Plex Mono',ui-monospace,monospace;font-weight:600;color:var(--accent);font-size:1.05rem;}
.timeline b{display:block;margin-bottom:3px;}
.timeline p{color:var(--text-muted);font-size:.9rem;margin:0;}

/* ---------- products page (applications × suppliers) ---------- */
.app-block{border-top:1px solid var(--border);padding:36px 0;}
.app-block:first-of-type{border-top:none;padding-top:8px;}
.app-block .ab-head{display:flex;gap:16px;align-items:flex-start;margin-bottom:20px;}
.app-block .ab-ic{width:44px;height:44px;border-radius:11px;background:var(--brand-surface);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.app-block h3{font-size:1.3rem;margin-bottom:6px;}
.app-block .ab-head p{color:var(--text-muted);max-width:64ch;font-size:.95rem;}
.chip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.supplier-chip{display:flex;gap:14px;align-items:center;border:1px solid var(--border);border-radius:12px;padding:14px 16px;background:var(--surface);transition:border-color .15s ease, box-shadow .15s ease;}
.supplier-chip:hover{border-color:var(--border-strong);box-shadow:var(--shadow);}
.supplier-chip .sc-logo{width:56px;height:34px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.supplier-chip .sc-logo img{max-height:34px;max-width:56px;object-fit:contain;}
.supplier-chip .sc-name{font-weight:600;font-size:.9rem;line-height:1.2;}
.supplier-chip .sc-cat{font-size:.78rem;color:var(--text-muted);margin-top:2px;}

@media (max-width:940px){
  .split{grid-template-columns:1fr;gap:32px;}
  .chip-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:640px){
  .chip-grid{grid-template-columns:1fr;}
  .timeline li{grid-template-columns:64px 1fr;gap:14px;}
}

/* ---------- news / blog listing ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{border:1px solid var(--border);border-radius:16px;overflow:hidden;background:var(--surface);display:flex;flex-direction:column;transition:border-color .15s ease, box-shadow .15s ease, transform .15s ease;}
.post-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow);transform:translateY(-2px);}
.post-card .thumb{display:block;height:172px;overflow:hidden;}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;display:block;}
.post-card .thumb-fallback{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--brand-surface),var(--accent));}
.post-card .thumb-fallback svg{color:rgba(255,255,255,.5);}
.post-card .pc-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-meta{display:flex;gap:10px;align-items:center;font-family:'Inter',-apple-system,'Segoe UI',sans-serif;font-weight:600;font-size:.72rem;letter-spacing:.04em;text-transform:uppercase;color:var(--text-muted);}
.post-meta .cat{color:var(--accent);}
.post-card h3{font-size:1.1rem;line-height:1.25;}
.post-card h3 a{text-decoration:none;}
.post-card h3 a:hover{color:var(--accent);}
.post-card .excerpt{color:var(--text-muted);font-size:.9rem;flex:1;}
.post-card .read{color:var(--accent);font-weight:600;font-size:.85rem;text-decoration:none;margin-top:2px;}
.post-card .read:hover{text-decoration:underline;}

/* ---------- article (single post) ---------- */
.article{max-width:760px;margin:0 auto;padding:0 32px;}
.article-head{padding:40px 0 4px;}
.article-head .post-meta{margin-bottom:14px;}
.article-head h1{font-size:2.3rem;line-height:1.14;margin-bottom:14px;}
.article-head .byline{color:var(--text-muted);font-size:.9rem;}
.article-figure{margin:26px 0;border-radius:14px;overflow:hidden;border:1px solid var(--border);}
.article-figure img{width:100%;height:auto;max-height:440px;object-fit:contain;display:block;background:var(--bg-inset);}
.article-figure .fig-fallback{height:320px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--brand-surface),var(--accent));color:rgba(255,255,255,.6);}
.article-body{font-size:1.05rem;line-height:1.72;}
.article-body h2{font-size:1.5rem;margin:34px 0 12px;}
.article-body h3{font-size:1.2rem;margin:26px 0 10px;}
.article-body p{margin-bottom:18px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;display:grid;gap:8px;}
.article-body blockquote{margin:24px 0;padding:14px 22px;border-left:3px solid var(--accent);background:var(--bg-inset);border-radius:0 10px 10px 0;color:var(--text-muted);font-style:italic;}
.article-body a{color:var(--accent);}
.article-cta{margin:38px 0 0;padding:24px;border:1px solid var(--border);border-radius:14px;background:var(--bg-inset);display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;}
.article-cta p{margin:0;font-weight:500;}

@media (max-width:940px){.post-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.post-grid{grid-template-columns:1fr;}.article-head h1{font-size:1.8rem;}.article{padding:0 18px;}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .btn,.cap-card,.ind-card,.logo-cell,.supplier-card,.supplier-chip,.post-card{transition:none;}
}

/* Video demo (click-to-play YouTube facade) */
.video-facade{position:relative;aspect-ratio:16/9;max-width:760px;background-size:cover;background-position:center;border-radius:12px;cursor:pointer;box-shadow:var(--shadow);overflow:hidden;}
.video-facade::after{content:"";position:absolute;inset:0;background:rgba(11,12,26,.28);transition:background .2s;}
.video-facade:hover::after{background:rgba(11,12,26,.10);}
.video-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:74px;height:52px;background:#f00;border-radius:14px;z-index:1;}
.video-play::before{content:"";position:absolute;top:50%;left:50%;transform:translate(-40%,-50%);border-style:solid;border-width:11px 0 11px 19px;border-color:transparent transparent transparent #fff;}
.video-facade.playing{cursor:default;}
.video-facade.playing::after,.video-facade.playing .video-play{display:none;}
.video-facade iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}