/* ===========================================================
   CÔNG TY TNHH THÀNH VŨ — style.css
   Tông màu theo logo: xanh dương #1577bd
   =========================================================== */

:root {
  --primary: #1577bd;
  --primary-dark: #0d568c;
  --primary-light: #2f9bd6;
  --accent: #e18e14;
  --accent-dark: #b8710a;
  --text: #233039;
  --text-soft: #586773;
  --bg: #ffffff;
  --bg-soft: #f2f8fb;
  --border: #dbe7ee;
  --shadow: 0 8px 30px rgba(21, 119, 189, 0.12);
  --shadow-sm: 0 4px 14px rgba(21, 119, 189, 0.09);
  --radius: 12px;
  --container: 1200px;
  --header-h: 80px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  color: var(--text);
  line-height: 1.65;
  background: var(--bg);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
h1, h2, h3, h4 { line-height: 1.25; color: var(--primary); font-weight: 700; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section.alt { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 50px; }
.section-tag {
  display: block; color: var(--accent-dark); font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase; font-size: 0.85rem; margin-bottom: 8px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.3rem); position: relative; display: inline-block; padding-bottom: 16px;
}
.section-title::after {
  content: ""; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%);
  width: 64px; height: 4px; border-radius: 4px; background: var(--accent);
}
.section-head p { color: var(--text-soft); margin-top: 18px; }
.text-center { text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  padding: 13px 28px; border-radius: 50px; font-weight: 600; font-size: 0.98rem;
  border: 2px solid transparent; transition: all .25s ease; white-space: nowrap;
}
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(225,142,20,.35); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,.7); }
.btn-outline:hover { background: #fff; color: var(--primary); border-color: #fff; }
.btn-outline-dark { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline-dark:hover { background: var(--primary); color: #fff; }

/* ===========================================================
   HEADER
   =========================================================== */
.topbar { background: linear-gradient(315deg, var(--primary-light), var(--primary), var(--primary-dark)); color: #eaf3fb; font-size: 0.86rem; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; min-height: 42px; flex-wrap: wrap; gap: 6px; }
.topbar a { color: #dbe5f2; transition: color .2s; }
.topbar a:hover { color: var(--accent); }
.topbar .tb-left, .topbar .tb-right { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.topbar i { color: var(--accent); margin-right: 6px; }

.site-header {
  position: sticky; top: 0; z-index: 1000; background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,.06); transition: box-shadow .3s;
  padding: 10px 0;
}
.site-header.scrolled { box-shadow: 0 6px 22px rgba(0,0,0,.12); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: var(--header-h); gap: 20px; }

.logo { display: flex; align-items: center; gap: 12px; }
.logo img { height: 100px; width: auto; display: block; }
.logo .logo-fallback {
  width: 52px; height: 52px; border-radius: 10px; flex: none;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.25rem;
}
.logo .logo-text strong { display: block; color: var(--primary); font-size: 1.18rem; font-weight: 800; letter-spacing: .5px; line-height: 1.1; }
.logo .logo-text span { display: block; font-size: 0.72rem; color: var(--text-soft); letter-spacing: 2px; text-transform: uppercase; }

.main-nav ul { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  display: block; padding: 10px 16px; font-weight: 600; color: var(--text);
  border-radius: 8px; transition: all .2s; position: relative;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a.active { color: var(--primary); }
.main-nav a.active::after, .main-nav a:hover::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 4px; height: 3px; border-radius: 3px; background: var(--accent);
}
.header-actions { display: flex; align-items: center; gap: 14px; }

/* ---------- Language switcher (cờ Việt - Trung) ---------- */
.lang-switch { display: flex; align-items: center; gap: 8px; }
.lang-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 23px; border-radius: 4px; overflow: hidden; padding: 0;
  border: 2px solid transparent; background: none; cursor: pointer; opacity: .5;
  transition: opacity .2s, border-color .2s, transform .2s; line-height: 0;
}
.lang-btn .fi { width: 100%; height: 100%; border-radius: 2px; background-size: cover; }
.lang-btn:hover { opacity: 1; transform: translateY(-1px); }
.lang-btn.active { opacity: 1; border-color: var(--accent); box-shadow: 0 2px 6px rgba(0,0,0,.15); }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 44px; background: var(--bg-soft); border: none; border-radius: 8px; cursor: pointer;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--primary); margin: 0 auto; transition: .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===========================================================
   HERO (trang chủ)
   =========================================================== */
.hero {
  position: relative; min-height: 640px; display: flex; align-items: center;
  color: #fff; text-align: left; overflow: hidden;
}
/* Slideshow ảnh banner (2 ảnh chuyển qua lại) */
.hero-slides { position: absolute; inset: 0; z-index: 0; }
.hero__slide {
  position: absolute; inset: 0;
  background-position: center; background-size: cover; background-repeat: no-repeat;
  opacity: 0; transition: opacity 1.1s ease; will-change: opacity;
}
.hero__slide.is-active { opacity: 1; }
/* Lớp phủ gradient */
.hero__overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(110deg, rgba(7,38,60,.93) 0%, rgba(9,52,80,.78) 50%, rgba(13,86,140,.45) 100%);
}
/* Quầng sáng xanh ngọc trang trí */
.hero__glow {
  position: absolute; z-index: 1; width: 460px; height: 460px; border-radius: 50%;
  right: -120px; top: -130px; pointer-events: none;
  background: radial-gradient(circle, rgba(21,119,189,.32), rgba(21,119,189,0) 70%);
  animation: heroFloat 9s ease-in-out infinite;
}
/* Lớp canvas bụi gỗ bay */
.hero-dust { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.hero .container { position: relative; z-index: 2; max-width: 840px; }

/* Hiệu ứng xuất hiện tuần tự */
.hero .eyebrow, .hero h1, .hero p, .hero .hero-btns, .hero .hero-trust {
  opacity: 0; animation: heroIn .9s cubic-bezier(.22,.61,.36,1) forwards;
}
.hero .eyebrow { animation-delay: .15s; }
.hero h1 { animation-delay: .35s; }
.hero p { animation-delay: .55s; }
.hero .hero-btns { animation-delay: .75s; }
.hero .hero-trust { animation-delay: .95s; }

.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 8px; background: rgba(21,119,189,.18); color: #a9d6f3;
  border: 1px solid rgba(21,119,189,.45); padding: 8px 20px; border-radius: 50px;
  font-size: 0.85rem; font-weight: 600; letter-spacing: .5px; margin-bottom: 22px;
  backdrop-filter: blur(2px);
}
.hero .eyebrow i { animation: heroStar 2.5s ease-in-out infinite; }
.hero h1 { color: #fff; font-size: clamp(2rem, 5vw, 3.5rem); margin-bottom: 20px; text-shadow: 0 2px 20px rgba(0,0,0,.25); }
.hero h1 span { color: var(--accent); position: relative; white-space: nowrap; }
.hero h1 span::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 5px; border-radius: 4px;
  background: rgba(21,119,189,.40); transform: scaleX(0); transform-origin: left;
  animation: heroUnderline .8s ease forwards; animation-delay: 1.1s;
}
.hero p { font-size: 1.12rem; color: #e4ebf5; max-width: 620px; margin-bottom: 34px; }
.hero .hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero .btn-accent { animation: heroBtnPulse 2.6s ease-out infinite; }
.hero .btn-accent:hover { animation-play-state: paused; }

/* Dải uy tín */
.hero-trust { display: flex; gap: 30px; margin-top: 38px; flex-wrap: wrap; }
.hero-trust .ht { display: flex; align-items: center; gap: 12px; }
.hero-trust .ht i { color: var(--accent); font-size: 1.6rem; }
.hero-trust .ht strong { display: block; font-size: 1.2rem; color: #fff; line-height: 1.1; }
.hero-trust .ht span { font-size: 0.82rem; color: #cdd9ea; }

/* Mũi tên cuộn xuống */
.hero-scroll {
  position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 6px; color: #cdd9ea;
  font-size: 0.78rem; letter-spacing: 1px; text-transform: uppercase;
  animation: heroBounce 2s ease-in-out infinite;
}
.hero-scroll i { font-size: 1.1rem; color: var(--accent); }
.hero-scroll:hover { color: #fff; }

/* Chấm điều hướng slide banner */
.hero-dots {
  position: absolute; left: 50%; bottom: 58px; transform: translateX(-50%);
  z-index: 3; display: flex; gap: 10px;
}
.hero-dot {
  width: 12px; height: 12px; padding: 0; border-radius: 50%; cursor: pointer;
  border: 2px solid rgba(255,255,255,.85); background: transparent; transition: all .25s;
}
.hero-dot:hover { background: rgba(255,255,255,.5); }
.hero-dot.is-active { background: #fff; transform: scale(1.15); }

@keyframes heroZoom { from { transform: scale(1); } to { transform: scale(1.1); } }
@keyframes heroIn { from { opacity: 0; transform: translateY(28px); } to { opacity: 1; transform: translateY(0); } }
@keyframes heroFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(34px); } }
@keyframes heroStar { 0%, 100% { transform: rotate(0) scale(1); } 50% { transform: rotate(18deg) scale(1.15); } }
@keyframes heroUnderline { to { transform: scaleX(1); } }
@keyframes heroBounce { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }
@keyframes heroBtnPulse { 0% { box-shadow: 0 0 0 0 rgba(21,119,189,.5); } 70% { box-shadow: 0 0 0 16px rgba(21,119,189,0); } 100% { box-shadow: 0 0 0 0 rgba(21,119,189,0); } }

/* Banner ảnh: khớp đúng tỉ lệ ảnh thật (1920x750), hiện trọn ảnh, không phủ mờ */
.hero--image { min-height: 0; aspect-ratio: 1920 / 750; }

/* ===========================================================
   HERO INTRO (khối chữ nằm dưới banner)
   =========================================================== */
.hero-intro { padding: 64px 0 24px; text-align: center; }
.hero-intro .container { max-width: 860px; }
.hero-intro .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(21,119,189,.10); color: var(--primary);
  border: 1px solid rgba(21,119,189,.30); padding: 8px 20px; border-radius: 50px;
  font-size: 0.85rem; font-weight: 600; letter-spacing: .5px; margin-bottom: 22px;
}
.hero-intro h1 { font-size: 32px; margin-bottom: 15px;line-height: 50px; }
.hero-intro h1 span { color: var(--accent); white-space: nowrap; }
.hero-intro p { font-size: 1.12rem; color: var(--text-soft); max-width: 680px; margin: 0 auto 30px; }
.hero-intro .hero-btns { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.hero-intro .hero-trust { display: flex; gap: 36px; margin-top: 42px; flex-wrap: wrap; justify-content: center; }
.hero-intro .hero-trust .ht { display: flex; align-items: center; gap: 12px; }
.hero-intro .hero-trust .ht i { color: var(--accent); font-size: 1.6rem; }
.hero-intro .hero-trust .ht strong { display: block; font-size: 1.2rem; color: var(--primary); line-height: 1.1; }
.hero-intro .hero-trust .ht span { font-size: 0.82rem; color: var(--text-soft); }

/* ===========================================================
   PAGE BANNER (trang trong)
   =========================================================== */
.page-banner {
  position: relative; padding: 70px 0; color: #fff; text-align: center;
  background: linear-gradient(rgba(11,62,98,.86), rgba(11,62,98,.86)),
    url('../images/z7963834415656_6d602584c867f5899e906966482ac290.jpg') center/cover no-repeat;
}
.page-banner h1 { color: #fff; font-size: clamp(1.8rem, 4vw, 2.7rem); margin-bottom: 12px; }
.breadcrumb { display: flex; justify-content: center; gap: 8px; font-size: 0.92rem; color: #cdd9ea; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--accent); }

/* ===========================================================
   GRID UTILITIES
   =========================================================== */
.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- Feature cards ---------- */
.feature-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 26px; text-align: center; transition: all .3s; box-shadow: var(--shadow-sm);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.feature-card .ico {
  width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center; font-size: 1.6rem; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
}
.feature-card:hover .ico { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); }
.feature-card h3 { font-size: 1.12rem; margin-bottom: 10px; }
.feature-card p { color: var(--text-soft); font-size: 0.96rem; }

/* ---------- Product cards ---------- */
.product-card {
  background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm);
  transition: all .3s; border: 1px solid var(--border);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.product-card .pc-img { aspect-ratio: 4/3; overflow: hidden; }
.product-card .pc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.product-card:hover .pc-img img { transform: scale(1.07); }
.product-card .pc-body { padding: 22px; }
.product-card h3 { font-size: 1.12rem; margin-bottom: 8px; }
.product-card p { color: var(--text-soft); font-size: 0.94rem; margin-bottom: 14px; }
.product-card .pc-link { color: var(--accent-dark); font-weight: 600; font-size: 0.92rem; display: inline-flex; gap: 6px; align-items: center; }
.product-card:hover .pc-link { gap: 10px; }

/* ===========================================================
   ABOUT / INTRO split
   =========================================================== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.split.reverse .split-media { order: 2; }
.split-media img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); aspect-ratio: 4/3; object-fit: cover; }
.split-body h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-bottom: 18px; position: relative; padding-bottom: 14px; }
.split-body h2::after { content: ""; position: absolute; left: 0; bottom: 0; width: 56px; height: 4px; border-radius: 4px; background: var(--accent); }
.split-body p { color: var(--text-soft); margin-bottom: 16px; }
.quote-box {
  border-left: 4px solid var(--accent); background: var(--bg-soft);
  padding: 18px 22px; border-radius: 0 10px 10px 0; font-style: italic;
  color: var(--primary); font-weight: 600; margin-bottom: 22px;
}

/* ---------- Checklist ---------- */
.check-list li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 14px; color: var(--text); }
.check-list li i { color: var(--accent); margin-top: 4px; flex: none; }
.check-list li strong { color: var(--primary); }

/* ---------- Reason / Why list cards ---------- */
.why-item {
  display: flex; gap: 18px; align-items: flex-start; background: #fff;
  padding: 24px; border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  transition: all .3s;
}
.why-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.why-item .ico {
  width: 54px; height: 54px; flex: none; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-light));
}
.why-item h3 { font-size: 1.06rem; margin-bottom: 6px; }
.why-item p { color: var(--text-soft); font-size: 0.94rem; }

/* ===========================================================
   STATS strip
   =========================================================== */
.stats {
  position: relative; color: var(--primary-dark);
  background:
    url('../images/z7963837193731_9ce6502c0e99ec220493be1f793c0188.jpg') center / cover no-repeat;
  background-attachment: fixed;
}
.stats .grid { gap: 20px; }
.stat {
  text-align: center; padding: 22px 16px;
  background: rgba(255,255,255,.82);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,.9);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(7,38,60,.18);
}
.stat .num { font-size: 2.4rem; font-weight: 800; color: var(--accent-dark); line-height: 1; margin-bottom: 8px; }
.stat p { color: var(--primary-dark); font-size: 0.98rem; font-weight: 700; }

/* ===========================================================
   CTA strip
   =========================================================== */
.cta {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #fff; text-align: center;
}
.cta h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2.2rem); margin-bottom: 14px; }
.cta p { color: #ecfdfb; max-width: 640px; margin: 0 auto 28px; font-size: 1.05rem; }
.cta .btn-primary { background: #fff; color: var(--accent-dark); }
.cta .btn-primary:hover { background: var(--primary-dark); color: #fff; }
.cta .cta-phone { font-size: 1.7rem; font-weight: 800; margin-top: 10px; }
.cta .cta-phone a { color: #fff; }

/* ===========================================================
   PRODUCT detail rows (san-pham)
   =========================================================== */
.prod-row { margin-bottom: 64px; }
.prod-row:last-child { margin-bottom: 0; }
.prod-num {
  display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px;
  background: var(--accent); color: #fff; font-weight: 800; border-radius: 12px; margin-bottom: 14px; font-size: 1.1rem;
}
.prod-row .split-body ul { margin-top: 8px; }

/* ===========================================================
   GALLERY + LIGHTBOX
   =========================================================== */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.gallery .g-item { aspect-ratio: 1/1; overflow: hidden; border-radius: 10px; cursor: pointer; position: relative; box-shadow: var(--shadow-sm); }
.gallery .g-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.gallery .g-item::after {
  content: "\f00e"; font-family: "Font Awesome 6 Free"; font-weight: 900; color: #fff; font-size: 1.5rem;
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(13,86,140,.58); opacity: 0; transition: opacity .3s;
}
.gallery .g-item:hover img { transform: scale(1.08); }
.gallery .g-item:hover::after { opacity: 1; }

.lightbox {
  position: fixed; inset: 0; z-index: 2000; background: rgba(6,28,42,.92);
  display: none; align-items: center; justify-content: center; padding: 30px;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 90vw; max-height: 85vh; border-radius: 8px; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.lightbox .lb-close {
  position: absolute; top: 24px; right: 30px; color: #fff; font-size: 2.4rem; cursor: pointer;
  line-height: 1; background: none; border: none;
}
.lightbox .lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%); color: #fff; font-size: 2rem; cursor: pointer;
  background: rgba(255,255,255,.12); border: none; width: 54px; height: 54px; border-radius: 50%; transition: background .2s;
}
.lightbox .lb-nav:hover { background: var(--accent); }
.lightbox .lb-prev { left: 24px; }
.lightbox .lb-next { right: 24px; }

/* ===========================================================
   CONTACT
   =========================================================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: stretch; }
.contact-info { display: grid; gap: 18px; }
.contact-item {
  display: flex; gap: 16px; align-items: flex-start; background: #fff; padding: 22px;
  border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1px solid var(--border);
}
.contact-item .ico {
  width: 50px; height: 50px; flex: none; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.2rem; background: linear-gradient(135deg, var(--primary), var(--primary-light));
}
.contact-item h4 { font-size: 1rem; margin-bottom: 4px; }
.contact-item p, .contact-item a { color: var(--text-soft); font-size: 0.96rem; word-break: break-word; }
.contact-item a:hover { color: var(--accent-dark); }
.contact-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 6px; }
.map-wrap { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); min-height: 360px; }
.map-wrap iframe { width: 100%; height: 100%; min-height: 460px; border: 0; display: block; }

/* ---------- Certification placeholder ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert-box {
  aspect-ratio: 3/4; border: 2px dashed var(--border); border-radius: var(--radius); background: var(--bg-soft);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; color: var(--text-soft); text-align: center; padding: 16px;
}
.cert-box i { font-size: 2rem; color: var(--primary-light); }

.pledge-box {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff;
  border-radius: var(--radius); padding: 44px; text-align: center; box-shadow: var(--shadow);
}
.pledge-box i.big { font-size: 2.6rem; color: var(--accent); margin-bottom: 18px; }
.pledge-box h3 { color: #fff; font-size: 1.5rem; margin-bottom: 14px; }
.pledge-box p { color: #dbe5f2; max-width: 760px; margin: 0 auto; }

/* ===========================================================
   FOOTER
   =========================================================== */
.site-footer { position: relative; overflow: hidden; background: var(--primary-dark); color: #c5d2e4; padding-top: 60px; font-size: 0.94rem; }
/* Ảnh nền xưởng gỗ rõ nét, phủ gradient navy đậm trên - nhạt dần xuống dưới */
.site-footer::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    linear-gradient(to bottom, rgba(7,38,60,.95) 0%, rgba(10,54,84,.80) 45%, rgba(11,62,98,.62) 100%),
    url('../images/z7963832831405_27c6bb50a70948a6f66da00d2f553a3f.jpg') center / cover no-repeat;
}
.site-footer .container, .site-footer .footer-bottom { position: relative; z-index: 1; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.4fr; gap: 40px; padding-bottom: 40px; }
.site-footer h4 { color: #fff; font-size: 1.05rem; margin-bottom: 18px; position: relative; padding-bottom: 12px; }
.site-footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 40px; height: 3px; background: var(--accent); border-radius: 3px; }
.site-footer .f-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.site-footer .f-logo .logo-fallback { background: rgba(255,255,255,.12); }
.site-footer .f-logo strong { color: #fff; font-size: 1.1rem; }
.site-footer .f-logo img { height: 100px; width: auto;  padding: 8px 12px; border-radius: 10px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 12px; }
.footer-contact i { color: var(--accent); margin-top: 4px; flex: none; }
.footer-contact a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 20px 0; text-align: center; color: #9fb1c9; font-size: 0.88rem; }

/* ===========================================================
   BACK TO TOP
   =========================================================== */
.to-top {
  position: fixed; right: 24px; bottom: 24px; width: 48px; height: 48px; border-radius: 50%;
  background: var(--accent); color: #fff; border: none; cursor: pointer; font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center; box-shadow: 0 8px 20px rgba(21,119,189,.4);
  opacity: 0; visibility: hidden; transform: translateY(12px); transition: all .3s; z-index: 900;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--accent-dark); }

/* ===========================================================
   FLOATING CONTACT (Messenger / Zalo / Gọi điện) — góc trái
   =========================================================== */
.float-contact {
  position: fixed; left: 20px; bottom: 24px; z-index: 950;
  display: flex; flex-direction: column; gap: 16px;
}
.fab {
  position: relative; width: 54px; height: 54px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.55rem; box-shadow: 0 6px 18px rgba(0,0,0,.28);
  animation: lba-shake 2.4s cubic-bezier(.36,.07,.19,.97) infinite;
  transform-origin: center; transition: transform .2s;
}
.fab:hover { transform: scale(1.1); }
.fab i { position: relative; z-index: 2; }
.fab-messenger { background: linear-gradient(135deg, #00c6ff, #0073ff); --ring: rgba(0,115,255,.5); animation-delay: 0s; }
.fab-zalo { background: #0068ff; --ring: rgba(0,104,255,.5); animation-delay: .25s; }
.fab-zalo .zalo-txt { position: relative; z-index: 2; font-weight: 800; font-size: 12px; letter-spacing: .3px; }
.fab-phone { background: linear-gradient(135deg, #34c759, #1c9e3f); --ring: rgba(52,199,89,.55); animation-delay: .5s; }

/* vòng sóng lan tỏa */
.fab::before {
  content: ""; position: absolute; inset: 0; border-radius: 50%; z-index: 1;
  animation: lba-ring 1.8s ease-out infinite;
}
.fab-messenger::before { animation-delay: 0s; }
.fab-zalo::before { animation-delay: .3s; }
.fab-phone::before { animation-delay: .6s; }

/* nhãn hiện khi hover */
.fab-label {
  position: absolute; left: 66px; top: 50%; transform: translateY(-50%) translateX(-8px);
  white-space: nowrap; background: #222b38; color: #fff; padding: 7px 13px; border-radius: 8px;
  font-size: 0.85rem; font-weight: 600; opacity: 0; visibility: hidden; transition: all .22s; z-index: 3;font-family: 'Be Vietnam Pro';
}
.fab-label::before {
  content: ""; position: absolute; left: -5px; top: 50%; transform: translateY(-50%);
  border: 5px solid transparent; border-right-color: #222b38;
}
.fab:hover .fab-label { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }

@keyframes lba-shake {
  0%, 64%, 100% { transform: rotate(0deg); }
  66% { transform: rotate(-14deg); }
  69% { transform: rotate(14deg); }
  72% { transform: rotate(-12deg); }
  75% { transform: rotate(12deg); }
  78% { transform: rotate(-7deg); }
  81% { transform: rotate(7deg); }
  84% { transform: rotate(0deg); }
}
@keyframes lba-ring {
  0% { box-shadow: 0 0 0 0 var(--ring); }
  70% { box-shadow: 0 0 0 16px rgba(0,0,0,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,0,0,0); }
}

/* ===========================================================
   REVEAL animation
   =========================================================== */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }
section#hero-intro
 {
    background: #f2f8fb;
}
/* ===========================================================
   RESPONSIVE
   =========================================================== */
@media (max-width: 992px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .gallery { grid-template-columns: repeat(3, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .nav-toggle { display: flex; }
  .main-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff;
    box-shadow: 0 12px 24px rgba(0,0,0,.12); padding: 12px; border-top: 1px solid var(--border);
  }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .main-nav a { padding: 14px 16px; border-radius: 8px; }
  .main-nav a.active::after, .main-nav a:hover::after { display: none; }
  .main-nav a.active, .main-nav a:hover { background: var(--bg-soft); }
  .header-actions .btn { display: none; }
  .header-inner { position: relative; }

  .split, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .split.reverse .split-media { order: 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .hero { text-align: center; }
  .hero .hero-btns { justify-content: center; }
  .hero-trust { justify-content: center; gap: 22px; }
  .hero__glow { width: 280px; height: 280px; right: -90px; top: -90px; }
  .hero-scroll { display: none; }
  .stats { background-attachment: scroll; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .topbar .tb-left { display: none; }
  .topbar .container { justify-content: center; }
  .float-contact { left: 14px; bottom: 16px; gap: 12px; }
  .fab { width: 48px; height: 48px; font-size: 1.35rem; }
  .fab-label { display: none; }
}

@media (max-width: 420px) {
  .gallery, .cert-grid { grid-template-columns: 1fr 1fr; }
  .logo .logo-text span { display: none; }
  .logo img { height: 65px; }
  .site-header {
    padding:0;
  }
  .hero-intro h1{
    font-size: 21px;
    margin-bottom: 15px;
    line-height: 32px;
  }
}
@media(max-width:360px){
  .topbar .tb-left,.topbar .tb-right {
    gap: 12px;
    font-size: 13px;
  }
  .hero-intro {
    padding: 30px 0 10px 0;
    text-align: center;
  }
  .btn {
 
    padding: 11px 14px;
    font-size: 14px;
  
}
  
}
/* Tôn trọng tùy chọn giảm chuyển động của người dùng */
@media (prefers-reduced-motion: reduce) {
  .hero__slide, .hero__glow, .hero-scroll, .hero .eyebrow i, .hero .btn-accent, .fab, .fab::before { animation: none !important; }
  .hero-intro .eyebrow, .hero-intro h1, .hero-intro p, .hero-intro .hero-btns, .hero-intro .hero-trust { opacity: 1 !important; animation: none !important; }
  .hero h1 span::after { transform: scaleX(1); animation: none !important; }
}