/* ================================================
   IDM PRECISION — Industrial B2B Stylesheet v2
   Phong cách công nghiệp cơ khí chính xác Việt Nam
   ================================================ */

:root{
  --idm-navy:#0A2540;
  --idm-navy-2:#1A3A6E;
  --idm-blue:#2A6BB8;
  --idm-sky:#4A90D9;
  --idm-steel:#5C6B7A;
  --idm-light:#F1F5F9;
  --idm-line:#E2E8F0;
  --idm-orange:#F97316;
  --idm-orange-2:#EA580C;
  --idm-green:#16A34A;
  --idm-red:#DC2626;
  --idm-dark:#0F172A;
  --text-primary:#0F172A;
  --text-secondary:#475569;
  --text-muted:#64748B;
  --bg:#FFFFFF;
  --font-heading:'Be Vietnam Pro','Inter',sans-serif;
  --font-body:'Be Vietnam Pro',sans-serif;
  --font-mono:'JetBrains Mono',monospace;
  --shadow-sm:0 1px 2px rgba(15,23,42,.05);
  --shadow-md:0 4px 12px rgba(15,23,42,.08);
  --shadow-lg:0 16px 40px rgba(15,23,42,.12);
  --shadow-xl:0 24px 64px rgba(15,23,42,.18);
  --radius:4px;
  --radius-md:8px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);color:var(--text-primary);line-height:1.65;background:var(--bg);-webkit-font-smoothing:antialiased}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
img{max-width:100%;height:auto;display:block}
a{color:var(--idm-blue);text-decoration:none;transition:.2s}
a:hover{color:var(--idm-navy)}

/* TOPBAR */
.topbar{background:var(--idm-dark);color:#cbd5e1;font-size:13px;padding:8px 0;border-bottom:1px solid rgba(255,255,255,.05)}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.topbar a{color:#cbd5e1}
.topbar-info{display:flex;gap:24px;flex-wrap:wrap}
.topbar-info span{display:inline-flex;align-items:center;gap:6px}
.topbar-info strong{color:#fff}
.topbar-lang a{margin-left:12px;opacity:.85}
.topbar-lang a:hover{color:#fff;opacity:1}

/* HEADER */
header{background:#fff;box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:100;border-bottom:1px solid var(--idm-line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:24px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
/* LOGO REAL IMAGE */
.logo-img{height:52px;width:auto;display:block;transition:.2s}
.logo:hover .logo-img{transform:scale(1.03)}
.foot-logo-img{height:64px;width:auto;display:block;background:#fff;padding:10px 14px;border-radius:var(--radius);box-shadow:0 4px 16px rgba(0,0,0,.18);margin-bottom:8px;max-width:220px}
.foot-logo-mark-img{display:none}
.foot-logo{display:block;margin-bottom:20px;padding-bottom:14px;border-bottom:2px solid var(--idm-orange);width:fit-content}
.foot-logo-text{font-family:var(--font-heading);font-weight:800;color:#fff;font-size:24px;line-height:1.1;letter-spacing:.5px}
.foot-logo-text small{display:block;font-size:11px;font-weight:600;color:var(--idm-orange);letter-spacing:3px;margin-top:6px;text-transform:uppercase}

.logo-mark{width:52px;height:52px;background:linear-gradient(135deg,var(--idm-navy),var(--idm-blue));border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-weight:800;color:#fff;font-size:16px;letter-spacing:1px;box-shadow:var(--shadow-sm)}
.logo-text{font-family:var(--font-heading);font-weight:800;color:var(--idm-navy);font-size:18px;line-height:1.1;letter-spacing:.3px}
.logo-text small{display:block;font-size:10px;font-weight:600;color:var(--idm-blue);letter-spacing:2px;margin-top:3px;text-transform:uppercase}
nav ul{list-style:none;display:flex;gap:4px}
nav a{color:var(--text-primary);font-weight:600;padding:10px 14px;border-radius:var(--radius);font-size:15px;text-transform:uppercase;letter-spacing:.3px;transition:.2s;position:relative}
html[lang="vi"] nav a{font-size:16px}
nav a:hover,nav a.active{color:var(--idm-blue)}
nav a.active::after{content:'';position:absolute;bottom:-2px;left:14px;right:14px;height:2px;background:var(--idm-orange)}
.btn-quote{background:var(--idm-orange);color:#fff!important;padding:12px 22px;border-radius:var(--radius);font-weight:700;font-size:13px;display:inline-flex;align-items:center;gap:6px;box-shadow:0 4px 12px rgba(249,115,22,.3);text-transform:uppercase;letter-spacing:.5px}
.btn-quote:hover{background:var(--idm-orange-2);color:#fff!important;transform:translateY(-1px);box-shadow:0 6px 16px rgba(249,115,22,.4)}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;font-size:24px;color:var(--idm-navy)}

/* HERO INDUSTRIAL */
.hero{position:relative;min-height:680px;display:flex;align-items:center;color:#fff;overflow:hidden;background:var(--idm-dark)}
.hero-bg{position:absolute;inset:0;background-image:url('images/khuon-muong-gia-cong-cnc.jpg');background-size:cover;background-position:center;background-repeat:no-repeat;opacity:.35;filter:grayscale(40%) contrast(1.1)}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,37,64,.95) 0%,rgba(10,37,64,.75) 50%,rgba(26,58,110,.65) 100%)}
.hero-grid{position:absolute;inset:0;opacity:.08;background-image:linear-gradient(rgba(74,144,217,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(74,144,217,.5) 1px,transparent 1px);background-size:80px 80px;pointer-events:none}
.hero-content{position:relative;z-index:2;max-width:880px;padding:80px 0}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(249,115,22,.15);border:1px solid rgba(249,115,22,.4);padding:8px 16px;border-radius:var(--radius);font-size:12px;font-weight:700;letter-spacing:1.5px;margin-bottom:28px;text-transform:uppercase;color:#fdba74}
.hero-tag::before{content:'';display:inline-block;width:6px;height:6px;background:var(--idm-orange);border-radius:50%;animation:pulse-dot 2s infinite}
@keyframes pulse-dot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.5)}}
.hero h1{font-family:var(--font-heading);font-size:62px;font-weight:800;line-height:1.05;margin-bottom:24px;letter-spacing:-1.5px;text-shadow:0 2px 8px rgba(0,0,0,.3)}
.hero h1 span{color:var(--idm-sky);display:block}
.hero h1 em{font-style:normal;color:var(--idm-orange)}
/* Hero trang phụ - nhỏ hơn home */
.hero-inner h1{font-size:52px;line-height:1.12;letter-spacing:-1px}
.hero-eyebrow{display:inline-block;color:#fdba74;font-weight:800;letter-spacing:2.5px;font-size:12px;text-transform:uppercase;margin-bottom:18px;background:rgba(249,115,22,.12);border:1px solid rgba(249,115,22,.35);padding:6px 14px;border-radius:var(--radius)}
.breadcrumb{font-size:13px;color:#94a3b8;margin-bottom:16px;letter-spacing:.3px}
.breadcrumb a{color:var(--idm-sky);text-decoration:none;font-weight:600}
.hero-sub{font-size:18px;font-weight:400;color:#e2e8f0;margin-bottom:32px;max-width:680px;line-height:1.7}
.hero-tagline{display:flex;align-items:flex-start;gap:12px;font-style:italic;font-weight:500;padding:16px 20px;background:rgba(255,255,255,.06);border-left:3px solid var(--idm-orange);margin-bottom:40px;font-size:15px;color:#cbd5e1;backdrop-filter:blur(8px);border-radius:0 var(--radius) var(--radius) 0}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-features{display:flex;gap:24px;margin-top:40px;flex-wrap:wrap;padding-top:32px;border-top:1px solid rgba(255,255,255,.1)}
.hero-feat{display:flex;gap:12px;align-items:flex-start;color:#e2e8f0;font-size:14px}
.hero-feat .icon{color:var(--idm-orange);font-size:20px;flex-shrink:0;font-weight:700;width:24px;text-align:center}

/* BUTTONS */
.btn-primary{background:var(--idm-orange);color:#fff;padding:16px 32px;border-radius:var(--radius);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:10px;box-shadow:0 4px 16px rgba(249,115,22,.35);border:none;cursor:pointer;font-family:inherit;text-transform:uppercase;letter-spacing:.5px;transition:.2s}
.btn-primary:hover{background:var(--idm-orange-2);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(249,115,22,.5)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.4);padding:14px 30px;border-radius:var(--radius);font-weight:700;font-size:14px;display:inline-flex;align-items:center;gap:10px;text-transform:uppercase;letter-spacing:.5px}
.btn-outline:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff}
.btn-dark{background:var(--idm-navy);color:#fff;padding:14px 28px;border-radius:var(--radius);font-weight:700;font-size:14px;display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer;font-family:inherit;text-transform:uppercase;letter-spacing:.5px}
.btn-dark:hover{background:var(--idm-dark);color:#fff;transform:translateY(-2px)}

/* STATS BAR */
.stats-bar{background:var(--idm-navy);color:#fff;padding:0;position:relative;border-top:4px solid var(--idm-orange)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-cell{padding:48px 32px;text-align:center;border-right:1px solid rgba(255,255,255,.1);position:relative;transition:.3s}
.stat-cell:last-child{border-right:none}
.stat-cell:hover{background:rgba(74,144,217,.1)}
.stat-num{font-family:var(--font-mono);font-size:56px;font-weight:700;line-height:1;margin-bottom:12px;color:#fff;letter-spacing:-2px}
.stat-num span{color:var(--idm-orange);font-size:36px;font-weight:700}
.stat-label{color:#cbd5e1;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:2px}

/* SECTIONS */
section{padding:96px 0;position:relative}
.section-head{text-align:center;max-width:780px;margin:0 auto 64px}
.section-head.left{text-align:left;margin-left:0}
.section-eyebrow{color:var(--idm-orange);font-weight:800;letter-spacing:3px;font-size:12px;text-transform:uppercase;margin-bottom:16px;display:inline-flex;align-items:center;gap:10px}
.section-eyebrow::before,.section-eyebrow::after{content:'';display:inline-block;width:30px;height:2px;background:var(--idm-orange)}
.section-title{font-family:var(--font-heading);font-size:42px;font-weight:800;color:var(--idm-navy);line-height:1.15;margin-bottom:20px;letter-spacing:-1px}
.section-title span{color:var(--idm-blue)}
.section-sub{font-size:17px;color:var(--text-secondary);line-height:1.7}
.bg-light{background:var(--idm-light)}
.bg-dark{background:var(--idm-dark);color:#fff}
.bg-dark .section-title{color:#fff}
.bg-dark .section-sub{color:#cbd5e1}

/* SERVICES (3 big cards) */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--idm-line);transition:.3s;position:relative;display:flex;flex-direction:column}
.svc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-xl);border-color:var(--idm-blue)}
.svc-img{aspect-ratio:16/10;overflow:hidden;background:#0F172A;position:relative}
.svc-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.svc-card:hover .svc-img img{transform:scale(1.08)}
.svc-img::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(10,37,64,.4) 0%,transparent 50%)}
.svc-body{padding:32px 28px;flex:1;display:flex;flex-direction:column}
.svc-num{font-family:var(--font-mono);font-size:13px;color:var(--idm-orange);font-weight:700;margin-bottom:12px;letter-spacing:2px}
.svc-card h3{font-family:var(--font-heading);font-size:22px;font-weight:800;color:var(--idm-navy);margin-bottom:14px;line-height:1.3}
.svc-card p{color:var(--text-secondary);font-size:15px;margin-bottom:20px;flex:1}
.svc-list{list-style:none;margin-bottom:24px}
.svc-list li{padding-left:24px;position:relative;margin-bottom:8px;font-size:14px;color:var(--text-secondary)}
.svc-list li::before{content:'›';position:absolute;left:0;color:var(--idm-orange);font-weight:700;font-size:18px;top:-2px}
.svc-card .link{color:var(--idm-blue);font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:1px;display:inline-flex;align-items:center;gap:8px;margin-top:auto}
.svc-card .link::after{content:'→';transition:.2s}
.svc-card:hover .link::after{transform:translateX(4px)}

/* INDUSTRIES */
.ind-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.ind-card{background:#fff;border:1px solid var(--idm-line);border-radius:var(--radius);padding:32px 16px;text-align:center;transition:.3s;cursor:pointer}
.ind-card:hover{background:var(--idm-navy);color:#fff;transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--idm-navy)}
.ind-icon{font-size:40px;margin-bottom:14px;display:block;line-height:1}
.ind-card h4{font-family:var(--font-heading);font-size:15px;font-weight:700;color:var(--idm-navy);line-height:1.3;letter-spacing:.2px}
.ind-card:hover h4{color:#fff}

/* PRODUCTS */
.prod-tabs{display:flex;justify-content:center;gap:8px;margin-bottom:48px;flex-wrap:wrap}
.prod-tab{background:#fff;color:var(--idm-navy);padding:10px 20px;border-radius:var(--radius);font-weight:700;font-size:13px;cursor:pointer;border:1.5px solid var(--idm-line);font-family:inherit;transition:.2s;text-transform:uppercase;letter-spacing:.3px}
.prod-tab.active,.prod-tab:hover{background:var(--idm-navy);color:#fff;border-color:var(--idm-navy)}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.prod-grid.cols-3{grid-template-columns:repeat(3,1fr);gap:24px}
.prod-card{background:#fff;border:1px solid var(--idm-line);border-radius:var(--radius);overflow:hidden;transition:.3s;position:relative}
.prod-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--idm-blue)}
.prod-img{aspect-ratio:4/3;overflow:hidden;background:#0F172A;position:relative;display:block;isolation:isolate}
/* Lớp blur backdrop = chính ảnh đó */
.prod-img::before{content:'';position:absolute;inset:0;background-image:var(--bg-img);background-size:cover;background-position:center;filter:blur(28px) brightness(.55) saturate(1.1);transform:scale(1.15);z-index:1}
/* Ảnh chính - full không crop */
.prod-img img{position:relative;z-index:2;width:100%;height:100%;object-fit:contain;object-position:center center;transition:transform .5s ease;display:block}
.prod-card:hover .prod-img img{transform:scale(1.04)}
.prod-card:hover .prod-img img{transform:scale(1.08)}
.prod-img::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(10,37,64,.85) 0%,rgba(10,37,64,0) 60%);opacity:0;transition:.3s}
.prod-card:hover .prod-img::after{opacity:1}
.prod-tag{position:absolute;top:12px;right:12px;background:var(--idm-orange);color:#fff;padding:4px 10px;border-radius:var(--radius);font-size:10px;font-weight:700;letter-spacing:1px;text-transform:uppercase;z-index:2}
.prod-body{padding:20px}
.prod-cat{font-size:11px;color:var(--idm-orange);font-weight:700;text-transform:uppercase;letter-spacing:1.5px;margin-bottom:8px}
.prod-card h3{font-family:var(--font-heading);font-size:16px;font-weight:700;color:var(--idm-navy);margin-bottom:8px;line-height:1.35;min-height:42px}
.prod-card p{color:var(--text-secondary);font-size:13px;margin-bottom:12px;line-height:1.55}
.prod-meta{display:flex;gap:10px;font-size:11px;color:var(--idm-blue);font-weight:700;font-family:var(--font-mono);flex-wrap:wrap;padding-top:12px;border-top:1px solid var(--idm-line)}

/* WHY US */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.why-card{background:#fff;padding:32px 24px;border-radius:var(--radius);border:1px solid var(--idm-line);transition:.3s;position:relative;overflow:hidden}
.why-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:0;background:var(--idm-orange);transition:.3s}
.why-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--idm-blue)}
.why-card:hover::before{height:100%}
.why-icon{width:48px;height:48px;background:var(--idm-light);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px;color:var(--idm-navy);transition:.3s}
.why-card:hover .why-icon{background:var(--idm-navy);color:#fff;transform:rotate(-5deg)}
.why-card h4{font-family:var(--font-heading);font-size:16px;font-weight:700;color:var(--idm-navy);margin-bottom:8px;line-height:1.3}
.why-card p{color:var(--text-secondary);font-size:14px;line-height:1.65}

/* MATERIALS BAR */
.mat-bar{background:var(--idm-light);padding:48px 0;border-top:1px solid var(--idm-line);border-bottom:1px solid var(--idm-line)}
.mat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:0;background:#fff;border:1px solid var(--idm-line);border-radius:var(--radius);overflow:hidden}
.mat-card{padding:32px 20px;text-align:center;border-right:1px solid var(--idm-line);transition:.3s}
.mat-card:last-child{border-right:none}
.mat-card:hover{background:var(--idm-light)}
.mat-icon{font-size:32px;margin-bottom:12px;display:block}
.mat-card h4{font-family:var(--font-heading);font-weight:700;color:var(--idm-navy);font-size:15px;margin-bottom:8px}
.mat-card p{font-family:var(--font-mono);font-size:11px;color:var(--idm-blue);line-height:1.6;font-weight:600}

/* CLIENTS LOGO WALL */
.clients{background:#fff;padding:64px 0;border-top:1px solid var(--idm-line)}
.clients-head{text-align:center;margin-bottom:40px;color:var(--text-muted);text-transform:uppercase;font-size:13px;letter-spacing:3px;font-weight:700}
.clients-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;align-items:center}
.client-logo{aspect-ratio:3/2;background:var(--idm-light);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-weight:700;color:var(--text-muted);font-size:13px;border:1px solid var(--idm-line);transition:.3s;text-align:center;padding:12px}
.client-logo:hover{background:#fff;color:var(--idm-navy);transform:translateY(-2px);box-shadow:var(--shadow-sm)}

/* CERTIFICATIONS */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cert-card{background:#fff;border:2px solid var(--idm-line);border-radius:var(--radius);padding:32px 20px;text-align:center;transition:.3s}
.cert-card:hover{border-color:var(--idm-orange);transform:translateY(-4px)}
.cert-icon{width:64px;height:64px;background:linear-gradient(135deg,var(--idm-navy),var(--idm-blue));border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;color:#fff;font-size:18px;font-weight:800;font-family:var(--font-mono);letter-spacing:-1px}
.cert-card h4{font-family:var(--font-heading);font-size:15px;font-weight:700;color:var(--idm-navy);margin-bottom:6px}
.cert-card p{color:var(--text-muted);font-size:13px;line-height:1.55}

/* PROCESS */
.process-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:48px;position:relative}
.process-grid::before{content:'';position:absolute;top:24px;left:5%;right:5%;height:2px;background:linear-gradient(to right,var(--idm-blue),var(--idm-orange));z-index:0}
.process-step{background:#fff;padding:24px 16px;border-radius:var(--radius);text-align:center;position:relative;z-index:1;border:1px solid var(--idm-line);transition:.3s}
.process-step:hover{border-color:var(--idm-orange);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.step-num{width:48px;height:48px;background:var(--idm-navy);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-weight:800;font-family:var(--font-mono);font-size:18px;border:4px solid #fff;box-shadow:0 0 0 1px var(--idm-line)}
.process-step h4{font-family:var(--font-heading);font-size:15px;font-weight:700;color:var(--idm-navy);margin-bottom:6px}
.process-step p{font-size:13px;color:var(--text-secondary);line-height:1.55}

/* DIST */
.dist{background:linear-gradient(135deg,#0F172A 0%,#1A3A6E 100%);color:#fff;border-radius:var(--radius);padding:64px;display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;position:relative;overflow:hidden;border:1px solid rgba(255,255,255,.1)}
.dist::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(249,115,22,.2),transparent 50%);pointer-events:none}
.dist-tag{display:inline-block;background:rgba(249,115,22,.15);border:1px solid rgba(249,115,22,.4);padding:6px 14px;border-radius:var(--radius);font-size:11px;font-weight:700;margin-bottom:20px;text-transform:uppercase;letter-spacing:1.5px;color:#fdba74;position:relative}
.dist h2{font-family:var(--font-heading);font-size:40px;font-weight:800;margin-bottom:16px;line-height:1.2;position:relative;letter-spacing:-.5px}
.dist p{opacity:.9;font-size:17px;margin-bottom:28px;position:relative;line-height:1.7}
.dist-feat{list-style:none;margin-bottom:32px;position:relative}
.dist-feat li{padding-left:32px;position:relative;margin-bottom:10px;font-size:15px}
.dist-feat li::before{content:'✓';position:absolute;left:0;width:22px;height:22px;background:var(--idm-orange);color:#fff;border-radius:var(--radius);text-align:center;line-height:22px;font-size:13px;font-weight:700}
.dist-visual{aspect-ratio:1;background:radial-gradient(circle,rgba(74,144,217,.2),transparent 70%);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:120px;position:relative;opacity:.85}

/* CTA FINAL */
.cta-final{background:linear-gradient(135deg,var(--idm-navy) 0%,var(--idm-dark) 100%);color:#fff;padding:80px 48px;border-radius:var(--radius);text-align:center;position:relative;overflow:hidden;border-top:4px solid var(--idm-orange)}
.cta-final::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 20%,rgba(74,144,217,.25),transparent 50%),radial-gradient(circle at 70% 80%,rgba(249,115,22,.2),transparent 50%);pointer-events:none}
.cta-final .section-eyebrow{color:var(--idm-orange);justify-content:center;display:flex}
.cta-final h2{font-family:var(--font-heading);font-size:38px;font-weight:800;margin-bottom:16px;position:relative;letter-spacing:-.5px}
.cta-final p{font-size:17px;opacity:.9;margin-bottom:36px;max-width:680px;margin-left:auto;margin-right:auto;position:relative;line-height:1.7}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;position:relative}

/* COMMITMENTS GRID */
.commit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px}
.commit-card{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:28px 24px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s}
.commit-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--idm-blue)}
.commit-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--idm-orange),#ea580c)}
.commit-card .num{width:54px;height:54px;background:linear-gradient(135deg,var(--idm-navy),var(--idm-blue));color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-weight:800;font-size:18px;margin-bottom:16px;box-shadow:0 6px 16px rgba(30,58,95,.25);letter-spacing:.5px}
.commit-card h3{font-family:var(--font-heading);font-size:18px;color:var(--idm-navy);margin-bottom:10px;line-height:1.3;font-weight:700}
.commit-card p{color:var(--text-secondary);font-size:14px;line-height:1.65;margin:0}
@media(max-width:880px){.commit-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.commit-grid{grid-template-columns:1fr}}

/* AUDIENCE GRID - đối tượng phục vụ */
.audience-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px}
.audience-card{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:32px 24px 28px;text-align:center;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s}
.audience-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.audience-card::before{content:'';position:absolute;top:0;left:0;right:0;height:5px}
.audience-card .aud-icon{width:78px;height:78px;border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:36px;margin:6px auto 18px;color:#fff;position:relative}
.audience-card .aud-tag{display:inline-block;padding:4px 12px;border-radius:20px;font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:12px}
.audience-card h3{font-family:var(--font-heading);font-size:18px;color:var(--idm-navy);margin-bottom:12px;line-height:1.35;min-height:48px;font-weight:700}
.audience-card p{color:var(--text-secondary);font-size:14px;line-height:1.65;margin:0}
/* Tone variants */
.audience-card[data-tone="navy"]::before{background:linear-gradient(90deg,var(--idm-navy),var(--idm-blue))}
.audience-card[data-tone="navy"] .aud-icon{background:linear-gradient(135deg,var(--idm-navy),var(--idm-blue));box-shadow:0 8px 20px rgba(30,58,95,.25)}
.audience-card[data-tone="navy"] .aud-tag{background:#dbeafe;color:var(--idm-blue)}
.audience-card[data-tone="navy"]:hover{border-color:var(--idm-blue)}
.audience-card[data-tone="orange"]::before{background:linear-gradient(90deg,#F97316,#ea580c)}
.audience-card[data-tone="orange"] .aud-icon{background:linear-gradient(135deg,#F97316,#ea580c);box-shadow:0 8px 20px rgba(249,115,22,.3)}
.audience-card[data-tone="orange"] .aud-tag{background:#fed7aa;color:#9a3412}
.audience-card[data-tone="orange"]:hover{border-color:#F97316}
.audience-card[data-tone="green"]::before{background:linear-gradient(90deg,#22c55e,#16a34a)}
.audience-card[data-tone="green"] .aud-icon{background:linear-gradient(135deg,#22c55e,#16a34a);box-shadow:0 8px 20px rgba(34,197,94,.3)}
.audience-card[data-tone="green"] .aud-tag{background:#dcfce7;color:#166534}
.audience-card[data-tone="green"]:hover{border-color:#22c55e}
.audience-card[data-tone="purple"]::before{background:linear-gradient(90deg,#8b5cf6,#7c3aed)}
.audience-card[data-tone="purple"] .aud-icon{background:linear-gradient(135deg,#8b5cf6,#7c3aed);box-shadow:0 8px 20px rgba(139,92,246,.3)}
.audience-card[data-tone="purple"] .aud-tag{background:#ede9fe;color:#6d28d9}
.audience-card[data-tone="purple"]:hover{border-color:#8b5cf6}
.audience-card[data-tone="sky"]::before{background:linear-gradient(90deg,#0ea5e9,#06b6d4)}
.audience-card[data-tone="sky"] .aud-icon{background:linear-gradient(135deg,#0ea5e9,#06b6d4);box-shadow:0 8px 20px rgba(14,165,233,.3)}
.audience-card[data-tone="sky"] .aud-tag{background:#cffafe;color:#0e7490}
.audience-card[data-tone="sky"]:hover{border-color:#0ea5e9}
.audience-card[data-tone="red"]::before{background:linear-gradient(90deg,#ef4444,#dc2626)}
.audience-card[data-tone="red"] .aud-icon{background:linear-gradient(135deg,#ef4444,#dc2626);box-shadow:0 8px 20px rgba(239,68,68,.3)}
.audience-card[data-tone="red"] .aud-tag{background:#fee2e2;color:#991b1b}
.audience-card[data-tone="red"]:hover{border-color:#ef4444}
@media(max-width:880px){.audience-grid{grid-template-columns:repeat(2,1fr)}.audience-card h3{min-height:0}}
@media(max-width:560px){.audience-grid{grid-template-columns:1fr}}

/* MATERIAL GRID - 5 vật liệu thẳng hàng */
.material-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:32px}
.material-card{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:22px 18px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;text-align:center;transition:transform .2s,box-shadow .2s,border-color .2s;display:flex;flex-direction:column}
.material-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.material-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px}
.material-card .mt-icon{font-size:36px;margin:4px 0 10px;line-height:1}
.material-card h4{font-family:var(--font-heading);font-size:17px;color:var(--idm-navy);margin:0 0 12px;font-weight:700}
.material-card .mt-codes{background:#f1f5f9;padding:10px 12px;border-radius:8px;font-family:var(--font-mono);font-size:12.5px;font-weight:700;color:var(--idm-navy);margin-bottom:12px;line-height:1.55;min-height:50px;display:flex;align-items:center;justify-content:center;text-align:center}
.material-card .mt-app{font-size:12.5px;color:var(--text-secondary);padding-top:10px;border-top:1px dashed #cbd5e1;line-height:1.5;margin-top:auto}
.material-card .mt-app strong{display:block;color:var(--idm-blue);font-size:11px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}
/* Tones */
.material-card[data-tone="navy"]::before{background:var(--idm-navy)}
.material-card[data-tone="navy"]:hover{border-color:var(--idm-blue)}
.material-card[data-tone="slate"]::before{background:#64748b}
.material-card[data-tone="slate"]:hover{border-color:#64748b}
.material-card[data-tone="sky"]::before{background:#0ea5e9}
.material-card[data-tone="sky"]:hover{border-color:#0ea5e9}
.material-card[data-tone="orange"]::before{background:#F97316}
.material-card[data-tone="orange"]:hover{border-color:#F97316}
.material-card[data-tone="green"]::before{background:#22c55e}
.material-card[data-tone="green"]:hover{border-color:#22c55e}
@media(max-width:1024px){.material-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:680px){.material-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:420px){.material-grid{grid-template-columns:1fr}}

/* HERO CHIPS - tag thiết bị dưới hero */
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-chip{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:#fff;padding:8px 16px;border-radius:24px;font-size:13px;font-weight:600;backdrop-filter:blur(6px);transition:background .2s,border-color .2s,transform .2s}
.hero-chip:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.35);transform:translateY(-2px)}
.hero-chip i{font-style:normal;font-size:16px;line-height:1}

/* CAPABILITY GRID - 4 năng lực chính */
.capability-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:32px}
.capability-card{background:#fff;border:1px solid #e2e8f0;border-radius:18px;padding:32px 22px 26px;text-align:center;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
.capability-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.capability-card::before{content:'';position:absolute;top:0;left:0;right:0;height:5px}
.capability-card .cap-num{position:absolute;top:14px;right:18px;font-family:var(--font-heading);font-weight:800;font-size:42px;color:#f1f5f9;line-height:1;letter-spacing:-1px;z-index:1}
.capability-card .cap-icon-big{width:80px;height:80px;border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:38px;color:#fff;margin:6px auto 18px;position:relative;z-index:2}
.capability-card .cap-tag{display:inline-block;padding:4px 12px;border-radius:20px;font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:12px}
.capability-card h3{font-family:var(--font-heading);font-size:18px;color:var(--idm-navy);margin-bottom:12px;line-height:1.35;min-height:48px;font-weight:700}
.capability-card p{color:var(--text-secondary);font-size:14px;line-height:1.65;margin:0}
/* Tones */
.capability-card[data-tone="navy"]::before{background:linear-gradient(90deg,var(--idm-navy),var(--idm-blue))}
.capability-card[data-tone="navy"] .cap-icon-big{background:linear-gradient(135deg,var(--idm-navy),var(--idm-blue));box-shadow:0 8px 20px rgba(30,58,95,.3)}
.capability-card[data-tone="navy"] .cap-tag{background:#dbeafe;color:var(--idm-blue)}
.capability-card[data-tone="navy"]:hover{border-color:var(--idm-blue)}
.capability-card[data-tone="blue"]::before{background:linear-gradient(90deg,#2563eb,#3b82f6)}
.capability-card[data-tone="blue"] .cap-icon-big{background:linear-gradient(135deg,#2563eb,#3b82f6);box-shadow:0 8px 20px rgba(37,99,235,.3)}
.capability-card[data-tone="blue"] .cap-tag{background:#dbeafe;color:#1d4ed8}
.capability-card[data-tone="blue"]:hover{border-color:#3b82f6}
.capability-card[data-tone="purple"]::before{background:linear-gradient(90deg,#8b5cf6,#7c3aed)}
.capability-card[data-tone="purple"] .cap-icon-big{background:linear-gradient(135deg,#8b5cf6,#7c3aed);box-shadow:0 8px 20px rgba(139,92,246,.3)}
.capability-card[data-tone="purple"] .cap-tag{background:#ede9fe;color:#6d28d9}
.capability-card[data-tone="purple"]:hover{border-color:#8b5cf6}
.capability-card[data-tone="orange"]::before{background:linear-gradient(90deg,#F97316,#ea580c)}
.capability-card[data-tone="orange"] .cap-icon-big{background:linear-gradient(135deg,#F97316,#ea580c);box-shadow:0 8px 20px rgba(249,115,22,.3)}
.capability-card[data-tone="orange"] .cap-tag{background:#fed7aa;color:#9a3412}
.capability-card[data-tone="orange"]:hover{border-color:#F97316}
@media(max-width:1024px){.capability-grid{grid-template-columns:repeat(2,1fr)}.capability-card h3{min-height:0}}
@media(max-width:560px){.capability-grid{grid-template-columns:1fr}}

/* MACHINE GRID - CNC VMC + máy bổ trợ */
.machine-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px}
.machine-card{background:#fff;border:1px solid #e2e8f0;border-radius:18px;padding:28px 26px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
.machine-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.machine-card::before{content:'';position:absolute;top:0;left:0;right:0;height:5px}
.mch-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.mch-icon{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:30px;color:#fff}
.mch-qty{font-family:var(--font-heading);font-weight:700;font-size:13px;padding:6px 14px;border-radius:20px;letter-spacing:.5px}
.mch-name{font-family:var(--font-heading);font-size:20px;font-weight:800;color:var(--idm-navy);margin-bottom:14px;letter-spacing:.3px}
.mch-spec{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;background:#f8fafc;border-radius:10px;margin-bottom:14px;border-left:3px solid var(--idm-blue)}
.mch-spec span{font-size:12px;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;font-weight:600}
.mch-spec strong{font-family:'JetBrains Mono',monospace;color:var(--idm-navy);font-size:15px;font-weight:700}
.mch-app{font-size:14px;color:var(--text-secondary);line-height:1.6;margin:0}
/* Card alt (3 máy bổ trợ) */
.machine-card.alt{text-align:center;padding:36px 24px 28px}
.mch-icon-big{width:84px;height:84px;border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:40px;color:#fff;margin:0 auto 20px}
.mch-alt-name{font-family:var(--font-heading);font-size:19px;color:var(--idm-navy);font-weight:700;margin-bottom:12px;line-height:1.3}
.mch-alt-desc{color:var(--text-secondary);font-size:14px;line-height:1.65;margin:0}
/* Tones */
.machine-card[data-tone="navy"]::before{background:linear-gradient(90deg,var(--idm-navy),var(--idm-blue))}
.machine-card[data-tone="navy"] .mch-icon,.machine-card[data-tone="navy"] .mch-icon-big{background:linear-gradient(135deg,var(--idm-navy),var(--idm-blue));box-shadow:0 8px 20px rgba(30,58,95,.3)}
.machine-card[data-tone="navy"] .mch-qty{background:#dbeafe;color:var(--idm-navy)}
.machine-card[data-tone="navy"]:hover{border-color:var(--idm-blue)}
.machine-card[data-tone="blue"]::before{background:linear-gradient(90deg,#2563eb,#3b82f6)}
.machine-card[data-tone="blue"] .mch-icon,.machine-card[data-tone="blue"] .mch-icon-big{background:linear-gradient(135deg,#2563eb,#3b82f6);box-shadow:0 8px 20px rgba(37,99,235,.3)}
.machine-card[data-tone="blue"] .mch-qty{background:#dbeafe;color:#1d4ed8}
.machine-card[data-tone="blue"]:hover{border-color:#3b82f6}
.machine-card[data-tone="orange"]::before{background:linear-gradient(90deg,#F97316,#ea580c)}
.machine-card[data-tone="orange"] .mch-icon,.machine-card[data-tone="orange"] .mch-icon-big{background:linear-gradient(135deg,#F97316,#ea580c);box-shadow:0 8px 20px rgba(249,115,22,.3)}
.machine-card[data-tone="orange"] .mch-qty{background:#fed7aa;color:#9a3412}
.machine-card[data-tone="orange"] .mch-spec{border-left-color:#F97316}
.machine-card[data-tone="orange"]:hover{border-color:#F97316}
.machine-card[data-tone="purple"]::before{background:linear-gradient(90deg,#8b5cf6,#7c3aed)}
.machine-card[data-tone="purple"] .mch-icon,.machine-card[data-tone="purple"] .mch-icon-big{background:linear-gradient(135deg,#8b5cf6,#7c3aed);box-shadow:0 8px 20px rgba(139,92,246,.35)}
.machine-card[data-tone="purple"]:hover{border-color:#8b5cf6}
.machine-card[data-tone="sky"]::before{background:linear-gradient(90deg,#0ea5e9,#06b6d4)}
.machine-card[data-tone="sky"] .mch-icon,.machine-card[data-tone="sky"] .mch-icon-big{background:linear-gradient(135deg,#0ea5e9,#06b6d4);box-shadow:0 8px 20px rgba(14,165,233,.35)}
.machine-card[data-tone="sky"]:hover{border-color:#0ea5e9}
.machine-card[data-tone="green"]::before{background:linear-gradient(90deg,#22c55e,#16a34a)}
.machine-card[data-tone="green"] .mch-icon,.machine-card[data-tone="green"] .mch-icon-big{background:linear-gradient(135deg,#22c55e,#16a34a);box-shadow:0 8px 20px rgba(34,197,94,.35)}
.machine-card[data-tone="green"]:hover{border-color:#22c55e}
/* Sub-section divider */
.sub-section-head{text-align:center;margin:56px 0 8px;padding-top:40px;border-top:1px dashed #cbd5e1;position:relative}
.sub-section-head .section-eyebrow{margin-bottom:8px}
.sub-section-title{font-family:var(--font-heading);font-size:24px;color:var(--idm-navy);font-weight:700;margin:0 0 8px}
@media(max-width:880px){.machine-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.machine-grid{grid-template-columns:1fr}}

/* CONTACT FORM */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-info{display:block}
.form-wrap{background:#fff;border-radius:16px;padding:32px;box-shadow:var(--shadow-md);border:1px solid #e2e8f0}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group.full{grid-column:1 / -1}
.form-group label{font-size:13px;font-weight:600;color:var(--idm-navy);line-height:1.3;display:flex;align-items:center;gap:6px}
.form-group label .req{color:#ef4444;font-weight:700}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:11px 14px;border:1.5px solid #cbd5e1;border-radius:8px;font-size:14px;font-family:inherit;color:var(--idm-navy);background:#fff;transition:border-color .15s,box-shadow .15s;box-sizing:border-box}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--idm-blue);box-shadow:0 0 0 3px rgba(74,144,217,.15)}
.form-group input::placeholder,.form-group textarea::placeholder{color:#94a3b8;font-size:13px}
.form-group textarea{resize:vertical;min-height:96px;line-height:1.5}
.form-group select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='%2364748b'%3E%3Cpath d='M2 4l4 4 4-4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:12px;padding-right:36px}
.file-upload{cursor:pointer}
.file-upload:hover{border-color:var(--idm-blue) !important;background:#f0f9ff !important}
.form-hint{font-size:11px;color:var(--text-muted);margin:0}
.contact-block{padding:14px 0;border-bottom:1px solid #e2e8f0}
.contact-block .lbl{font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--idm-blue);font-weight:700;margin-bottom:4px}
.contact-block .val{font-weight:700;color:var(--idm-navy);font-size:15px;display:flex;flex-direction:column}
.contact-block .val small{font-weight:500;color:var(--text-secondary);font-size:12px;margin-top:2px}
@media(max-width:880px){
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .form-grid{grid-template-columns:1fr}
  .form-wrap{padding:24px 20px}
}

/* FAQ */
.faq{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid #e2e8f0;border-radius:12px;overflow:hidden;transition:box-shadow .2s}
.faq-item.open{box-shadow:var(--shadow-sm);border-color:var(--idm-blue)}
.faq-q{padding:18px 22px;font-weight:700;color:var(--idm-navy);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:14px;font-size:15px}
.faq-q::after{content:'+';font-size:24px;color:var(--idm-orange);font-weight:300;flex-shrink:0}
.faq-item.open .faq-q::after{content:'−'}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s,padding .3s;padding:0 22px}
.faq-item.open .faq-a{max-height:300px;padding:0 22px 18px}
.faq-a p{font-size:14px;color:var(--text-secondary);line-height:1.65;margin:0}

/* FOOTER */
footer{background:var(--idm-dark);color:#94a3b8;padding:72px 0 0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
footer h4{color:#fff;font-family:var(--font-heading);font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:2px;margin-bottom:20px;padding-bottom:12px;border-bottom:2px solid var(--idm-orange);display:inline-block}
.foot-logo{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.foot-logo-mark{width:48px;height:48px;background:linear-gradient(135deg,var(--idm-blue),var(--idm-navy));border-radius:var(--radius);border:2px solid var(--idm-sky);display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-weight:800;color:#fff;font-size:15px}
.foot-logo-text{font-family:var(--font-heading);font-weight:800;color:#fff;font-size:18px;line-height:1.2}
.foot-logo-text small{display:block;font-size:10px;color:var(--idm-sky);letter-spacing:2px;margin-top:4px}
footer p{font-size:14px;line-height:1.7;margin-bottom:8px}
.foot-info{font-size:13px;margin-top:16px}
.foot-info div{margin-bottom:8px;padding-left:0;position:relative}
footer ul{list-style:none;margin:0;padding:0}
footer ul li{margin-bottom:10px}
footer ul a{color:#94a3b8;font-size:14px;text-decoration:none;transition:color .2s}
footer ul a:hover{color:var(--idm-sky)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding:24px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;font-size:13px}
.foot-bottom .socials{display:flex;gap:12px}
.foot-bottom .socials a{width:36px;height:36px;background:rgba(255,255,255,.08);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;color:#fff;text-decoration:none;transition:background .2s}
.foot-bottom .socials a:hover{background:var(--idm-blue)}

/* ============ FLOATING CONTACT BUTTONS ============ */
.float-contacts{position:fixed;right:20px;bottom:20px;display:flex;flex-direction:column;gap:12px;z-index:999}
.fc-btn{display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:50%;color:#fff;text-decoration:none;box-shadow:0 6px 20px rgba(0,0,0,.25);transition:transform .2s,box-shadow .2s,width .25s;position:relative;overflow:hidden}
.fc-btn span{display:none;font-weight:600;font-size:14px;margin-left:8px;white-space:nowrap;padding-right:8px}
.fc-btn:hover{transform:scale(1.08);box-shadow:0 10px 28px rgba(0,0,0,.32)}
.fc-zalo{background:#0068ff}
.fc-mess{background:#0084ff}
.fc-call{background:#22c55e;animation:fc-pulse 2s infinite}
.fc-ai{background:linear-gradient(135deg,#4285F4 0%,#9168F1 50%,#D96570 100%);position:relative}
.fc-ai::after{content:'AI';position:absolute;top:-6px;right:-6px;background:#F97316;color:#fff;font-size:9px;font-weight:800;padding:2px 5px;border-radius:8px;letter-spacing:.5px;box-shadow:0 2px 6px rgba(0,0,0,.3)}
@keyframes fc-pulse{0%,100%{box-shadow:0 0 0 0 rgba(34,197,94,.55),0 6px 20px rgba(0,0,0,.25)}50%{box-shadow:0 0 0 14px rgba(34,197,94,0),0 6px 20px rgba(0,0,0,.25)}}
@keyframes fc-ai-glow{0%,100%{box-shadow:0 6px 20px rgba(145,104,241,.4)}50%{box-shadow:0 6px 28px rgba(145,104,241,.75)}}
.fc-ai{animation:fc-ai-glow 2.5s ease-in-out infinite}

/* ============ RESPONSIVE ============ */
@media(max-width:980px){
  .hero h1{font-size:38px}
  .hero-inner h1{font-size:36px}
  .dist h2{font-size:30px}
  .hero{padding:64px 0 80px}
  .stats-grid,.svc-grid,.prod-grid,.commit-grid,.why-grid,.ind-grid{grid-template-columns:repeat(2,1fr)}
  .mat-grid{grid-template-columns:repeat(2,1fr)}
  .dist{grid-template-columns:1fr;padding:48px 32px;text-align:center}
  .dist-feat li{text-align:left}
  .dist-visual{max-width:240px;margin:0 auto;font-size:96px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  section{padding:64px 0}
  .section-title{font-size:30px}
  nav ul{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:16px;box-shadow:var(--shadow-md);z-index:100}
  nav ul.open{display:flex}
  .menu-toggle{display:block}
  .header-inner{position:relative;flex-wrap:wrap}
  .topbar-info{font-size:11px;gap:10px;flex-wrap:wrap}
  .float-contacts{right:14px;bottom:14px;gap:10px}
  .fc-btn{width:48px;height:48px}
  .fc-btn svg{width:22px;height:22px}
}
@media(max-width:560px){
  .stats-grid,.svc-grid,.prod-grid,.commit-grid,.why-grid,.mat-grid,.ind-grid,.foot-grid{grid-template-columns:1fr}
  .hero h1{font-size:28px}
  .hero-inner h1{font-size:28px}
  .dist h2{font-size:24px}
  .cta-final{padding:48px 24px}
  .cta-final h2{font-size:24px}
  .topbar-