*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --red: #E50909;
  --red-dark: #c20808;
  --charcoal: #171A1D;
  --charcoal2: #0e1012;
  --steel: #6B6F73;
  --light: #F3F4F5;
  --white: #fff;
  --text: #222;
  --border: #E1E3E5;
  --green: #25D366;
}

html { scroll-behavior: smooth; }
body { font-family: 'Inter', sans-serif; color: var(--text); background: var(--white); overflow-x: hidden; }

/* ── TOPBAR ── */
.topbar { background: var(--charcoal); padding: 10px 0; font-size: 0.82rem; color: #aaa; border-bottom: 1px solid #222; }
.topbar-inner { max-width: 1200px; margin: auto; padding: 0 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.topbar-inner span, .topbar-inner a { display: flex; align-items: center; gap: 6px; color: #aaa; text-decoration: none; transition: color 0.2s; }
.topbar-inner a:hover { color: var(--red); }
.topbar-inner i { color: var(--red); font-size: 0.75rem; }

/* ── NAVBAR ── */
.navbar { position: sticky; top: 0; background: var(--white); border-bottom: 2px solid var(--border); z-index: 999; transition: box-shadow 0.3s; }
.navbar.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.1); }
.nav-container { max-width: 1200px; margin: auto; padding: 0 24px; height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.logo img { height: 52px; object-fit: contain; display: block; }
.nav-links { list-style: none; display: flex; gap: 0; }
.nav-link { text-decoration: none; color: var(--text); font-weight: 600; font-size: 0.9rem; padding: 8px 16px; position: relative; transition: color 0.2s; }
.nav-link::after { content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 2px; background: var(--red); transform: scaleX(0); transition: transform 0.25s; }
.nav-link:hover, .nav-link.active { color: var(--red); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.nav-cta { background: var(--red); color: #fff; padding: 10px 22px; border-radius: 4px; text-decoration: none; font-weight: 700; font-size: 0.88rem; display: flex; align-items: center; gap: 7px; transition: all 0.25s; white-space: nowrap; }
.nav-cta:hover { background: var(--red-dark); transform: translateY(-1px); }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── HERO ── */
.hero {
  min-height: 88vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.hero-slides { position: absolute; inset: 0; z-index: 0; }
.hero-slide {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.hero-slide.active { opacity: 1; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to right, rgba(23,26,29,0.75) 40%, rgba(23,26,29,0.25) 100%);
  z-index: 1;
}
.hero-content { flex: 1; display: flex; flex-direction: column; justify-content: center; max-width: 1200px; margin: 0 auto; width: 100%; padding: 80px 24px 60px; position: relative; z-index: 2; }
.hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(229,9,9,0.12); border: 1px solid rgba(229,9,9,0.3); color: #ff8888; font-size: 0.78rem; font-weight: 700; padding: 6px 14px; border-radius: 4px; margin-bottom: 24px; letter-spacing: 0.5px; width: fit-content; }
.hero-content h1 { font-size: clamp(2.6rem, 5.5vw, 4.4rem); font-weight: 900; color: #fff; line-height: 1.1; letter-spacing: -1px; margin-bottom: 20px; max-width: 680px; }
.hero-content h1 span { color: var(--red); }
.hero-content p { font-size: 1.05rem; color: #9a9ea2; line-height: 1.75; margin-bottom: 36px; max-width: 560px; }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }

/* HERO BOTTOM BAR */
.hero-bottom { background: rgba(255,255,255,0.04); border-top: 1px solid rgba(255,255,255,0.07); display: flex; align-items: center; justify-content: center; flex-wrap: wrap; position: relative; z-index: 2; }
.hb-item { display: flex; align-items: center; gap: 10px; padding: 20px 40px; color: #ccc; font-size: 0.88rem; font-weight: 600; }
.hb-item i { color: var(--red); font-size: 1rem; }
.hb-div { width: 1px; height: 30px; background: rgba(255,255,255,0.08); }

/* ── BUTTONS ── */
.btn-primary { background: var(--red); color: #fff; padding: 13px 28px; border-radius: 4px; text-decoration: none; font-weight: 700; font-size: 0.93rem; border: none; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; transition: all 0.25s; }
.btn-primary:hover { background: var(--red-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(229,9,9,0.3); }
.btn-primary.full { width: 100%; justify-content: center; }
.btn-ghost { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); padding: 13px 28px; border-radius: 4px; text-decoration: none; font-weight: 700; font-size: 0.93rem; display: inline-flex; align-items: center; gap: 8px; transition: all 0.25s; }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.06); }
.btn-outline { background: transparent; color: var(--charcoal); border: 2px solid var(--charcoal); padding: 13px 24px; border-radius: 4px; text-decoration: none; font-weight: 700; font-size: 0.93rem; display: inline-flex; align-items: center; gap: 8px; transition: all 0.25s; }
.btn-outline:hover { background: var(--charcoal); color: #fff; }
.btn-green { background: var(--green); color: #fff; padding: 14px 28px; border-radius: 4px; text-decoration: none; font-weight: 700; font-size: 0.95rem; display: inline-flex; align-items: center; gap: 8px; transition: all 0.25s; }
.btn-green:hover { background: #1ebe5d; transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--charcoal); padding: 14px 28px; border-radius: 4px; text-decoration: none; font-weight: 700; font-size: 0.95rem; display: inline-flex; align-items: center; gap: 8px; transition: all 0.25s; }
.btn-white:hover { background: var(--light); transform: translateY(-2px); }

/* ── COMMONS ── */
.container { max-width: 1200px; margin: auto; padding: 0 24px; }
.sec-tag { font-size: 0.72rem; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; color: var(--red); margin-bottom: 10px; display: block; }
.sec-tag.center { text-align: center; }
h2 { font-size: clamp(1.9rem, 4vw, 2.6rem); font-weight: 900; color: var(--charcoal); line-height: 1.15; margin-bottom: 14px; }
h2.center { text-align: center; }
.sec-sub { color: var(--steel); font-size: 0.97rem; line-height: 1.7; margin-bottom: 52px; }
.sec-sub.center { text-align: center; max-width: 560px; margin-left: auto; margin-right: auto; }

/* ── STATS ── */
.stats { background: var(--white); padding: 60px 0; border-bottom: 1px solid var(--border); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.stat-card { padding: 36px 24px; text-align: center; border-right: 1px solid var(--border); transition: background 0.3s; }
.stat-card:last-child { border-right: none; }
.stat-card:hover { background: var(--light); }
.stat-card i { font-size: 1.8rem; color: var(--red); margin-bottom: 12px; display: block; }
.stat-card h3 { font-size: 2.2rem; font-weight: 900; color: var(--charcoal); margin-bottom: 4px; }
.stat-card p { font-size: 0.85rem; color: var(--steel); font-weight: 500; }

/* ── ABOUT ── */
.about { padding: 100px 0; background: var(--light); }
.about-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 72px; align-items: start; }

.about-img-stack { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
.ais-main { border-radius: 12px; overflow: hidden; }
.ais-main img { width: 100%; height: 240px; object-fit: cover; display: block; transition: transform 0.4s; }
.ais-main:hover img { transform: scale(1.03); }
.ais-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.ais-small { border-radius: 10px; overflow: hidden; }
.ais-small img { width: 100%; height: 140px; object-fit: cover; display: block; transition: transform 0.4s; }
.ais-small:hover img { transform: scale(1.05); }
.about-img-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.aic { background: var(--white); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; display: flex; align-items: center; gap: 10px; font-size: 0.85rem; font-weight: 600; color: var(--charcoal); transition: all 0.25s; }
.aic:hover { border-color: var(--red); color: var(--red); }
.aic i { color: var(--steel); font-size: 0.9rem; transition: color 0.25s; }
.aic:hover i { color: var(--red); }
.aic.red { background: rgba(229,9,9,0.05); border-color: rgba(229,9,9,0.2); color: var(--red); }
.aic.red i { color: var(--red); }

.about-text-col p { color: var(--steel); line-height: 1.8; margin-bottom: 14px; font-size: 0.97rem; }
.about-text-col strong { color: var(--charcoal); }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 22px 0 28px; }
.af-item { display: flex; align-items: center; gap: 8px; font-size: 0.88rem; font-weight: 500; color: var(--text); }
.af-item i { color: var(--red); font-size: 0.75rem; flex-shrink: 0; background: rgba(229,9,9,0.1); width: 20px; height: 20px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.about-btns { display: flex; gap: 12px; flex-wrap: wrap; }

/* ── PRODUCTS ── */
.products { padding: 100px 0; background: var(--white); }
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.prod-card { background: var(--white); border: 1px solid var(--border); border-radius: 10px; padding: 0; display: flex; flex-direction: column; transition: all 0.3s; position: relative; overflow: hidden; }
.prod-img { width: 100%; height: 220px; overflow: hidden; }
.prod-img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.4s ease; }
.prod-card:hover .prod-img img { transform: scale(1.03); }
.prod-body { padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.prod-card::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px; background: var(--red); transform: scaleX(0); transition: transform 0.3s; transform-origin: left; }
.prod-card:hover { transform: translateY(-5px); box-shadow: 0 16px 40px rgba(0,0,0,0.1); border-color: #ccc; }
.prod-card:hover::after { transform: scaleX(1); }
.prod-top { display: flex; align-items: center; justify-content: space-between; }
.prod-icon { width: 52px; height: 52px; background: var(--light); border-radius: 10px; display: flex; align-items: center; justify-content: center; transition: all 0.3s; }
.prod-card:hover .prod-icon { background: var(--red); }
.prod-icon i { font-size: 1.3rem; color: var(--charcoal); transition: color 0.3s; }
.prod-card:hover .prod-icon i { color: #fff; }
.prod-num { font-size: 1.8rem; font-weight: 900; color: var(--border); line-height: 1; }
.prod-body h3 { font-size: 1.05rem; font-weight: 700; color: var(--charcoal); }
.prod-body p { color: var(--steel); font-size: 0.86rem; line-height: 1.65; flex: 1; }
.prod-grades { display: flex; flex-wrap: wrap; gap: 6px; }
.prod-grades span { background: var(--light); border: 1px solid var(--border); color: var(--steel); font-size: 0.72rem; font-weight: 600; padding: 3px 9px; border-radius: 3px; }
.prod-btn { color: var(--red); text-decoration: none; font-weight: 700; font-size: 0.85rem; display: inline-flex; align-items: center; gap: 6px; transition: gap 0.2s; margin-top: auto; }
.prod-btn:hover { gap: 10px; }

/* ── WHY US ── */
.whyus { padding: 100px 0; background: var(--light); }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.why-card { background: var(--white); border: 1px solid var(--border); border-radius: 10px; padding: 32px 26px; transition: all 0.3s; }
.why-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); border-color: #ccc; }
.why-icon { width: 52px; height: 52px; background: rgba(229,9,9,0.08); border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-bottom: 18px; transition: all 0.3s; }
.why-card:hover .why-icon { background: var(--red); }
.why-icon i { font-size: 1.3rem; color: var(--red); transition: color 0.3s; }
.why-card:hover .why-icon i { color: #fff; }
.why-card h3 { font-size: 1rem; font-weight: 700; color: var(--charcoal); margin-bottom: 10px; }
.why-card p { color: var(--steel); font-size: 0.87rem; line-height: 1.65; }

/* ── CTA ── */
.cta-section { padding: 0; background: var(--white); }
.cta-bg {
  background: linear-gradient(135deg, var(--charcoal) 0%, #2a2f35 100%);
  padding: 70px 0;
  position: relative;
  overflow: hidden;
}
.cta-bg::before {
  content: '';
  position: absolute; inset: 0;
  background: url('img/ss-pipes.webp') center/cover no-repeat;
  opacity: 0.08;
}
.cta-box { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.cta-tag { font-size: 0.72rem; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; color: var(--red); margin-bottom: 10px; display: block; }
.cta-text h2 { color: #fff; margin-bottom: 10px; font-size: clamp(1.6rem, 3vw, 2.2rem); }
.cta-text p { color: #9a9ea2; font-size: 0.97rem; line-height: 1.7; max-width: 480px; }
.cta-btns { display: flex; flex-direction: column; gap: 12px; flex-shrink: 0; }
.btn-green.large { padding: 15px 32px; font-size: 1rem; }
.btn-white.large { padding: 15px 32px; font-size: 1rem; }

/* ── CONTACT ── */
.contact { padding: 100px 0; background: var(--light); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 36px; align-items: start; }

/* Info Cards */
.cl-info-cards { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
.cl-info-card { background: var(--white); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; display: flex; align-items: center; gap: 14px; transition: all 0.25s; }
.cl-info-card:hover { border-color: var(--red); box-shadow: 0 4px 16px rgba(229,9,9,0.07); transform: translateX(4px); }
.cl-info-icon { width: 44px; height: 44px; background: var(--light); border: 1px solid var(--border); border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.cl-info-icon i { font-size: 1rem; color: var(--charcoal); }
.cl-info-icon.green { background: #e8faf0; border-color: #c8f0d8; }
.cl-info-icon.green i { color: var(--green); }
.cl-info-icon.blue { background: #e8f0fe; border-color: #c8d8f8; }
.cl-info-icon.blue i { color: #3b82f6; }
.cl-info-card h4 { font-size: 0.7rem; color: var(--steel); font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 3px; }
.cl-info-card p, .cl-info-card a { font-size: 0.93rem; color: var(--text); font-weight: 600; text-decoration: none; }
.cl-info-card a:hover { color: var(--red); }

/* Map */
.cl-map { border-radius: 10px; overflow: hidden; border: 1px solid var(--border); margin-bottom: 16px; }
.cl-map iframe { display: block; }

/* Note */
.cl-note { background: linear-gradient(135deg, #fff8f0, #fff4e6); border: 1px solid #fde0b8; border-radius: 10px; padding: 14px 16px; display: flex; align-items: center; gap: 12px; }
.cl-note-icon { width: 36px; height: 36px; background: #e67e22; border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.cl-note-icon i { color: #fff; font-size: 0.9rem; }
.cl-note p { font-size: 0.84rem; color: var(--steel); line-height: 1.5; }
.cl-note strong { color: var(--charcoal); }

/* Form Card */
.cf-card { background: var(--white); border-radius: 12px; padding: 36px; border: 1px solid var(--border); box-shadow: 0 4px 24px rgba(0,0,0,0.05); }
.cf-header { display: flex; align-items: center; gap: 14px; padding-bottom: 20px; margin-bottom: 22px; border-bottom: 1px solid var(--border); }
.cf-header-icon { width: 46px; height: 46px; background: rgba(229,9,9,0.08); border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.cf-header-icon i { color: var(--red); font-size: 1.1rem; }
.cf-header h3 { font-size: 1.05rem; font-weight: 700; color: var(--charcoal); margin-bottom: 3px; }
.cf-header p { font-size: 0.82rem; color: var(--steel); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-group label { font-size: 0.78rem; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 6px; }
.form-group label i { color: var(--red); font-size: 0.7rem; }
.form-group input, .form-group textarea { padding: 11px 14px; border: 1.5px solid var(--border); border-radius: 6px; font-size: 0.91rem; font-family: 'Inter', sans-serif; outline: none; transition: border 0.2s, box-shadow 0.2s; color: var(--text); background: var(--light); }
.form-group input:focus, .form-group textarea:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(229,9,9,0.07); background: #fff; }
.form-group textarea { resize: vertical; }

/* ── FOOTER ── */
.footer-main { background: var(--white); padding: 64px 0 48px; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.1fr; gap: 48px; }
.footer-logo { height: 46px; object-fit: contain; margin-bottom: 18px; display: block; }
.footer-brand p { color: var(--steel); font-size: 0.85rem; line-height: 1.75; margin-bottom: 20px; }

.footer-dealer { margin-bottom: 20px; }
.fd-title { font-size: 0.65rem; color: var(--steel); font-weight: 700; text-transform: uppercase; letter-spacing: 2px; display: block; margin-bottom: 10px; }
.fd-chips { display: flex; gap: 6px; flex-wrap: wrap; }
.fd-chips span { background: var(--light); border: 1px solid var(--border); color: var(--steel); font-size: 0.72rem; font-weight: 600; padding: 5px 11px; border-radius: 4px; display: flex; align-items: center; gap: 5px; transition: all 0.2s; }
.fd-chips span i { color: var(--red); font-size: 0.6rem; }
.fd-chips span:hover { border-color: var(--red); color: #ccc; }

.footer-socials { display: flex; gap: 8px; }
.footer-socials a { width: 38px; height: 38px; background: var(--light); border: 1px solid var(--border); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--steel); font-size: 1rem; text-decoration: none; transition: all 0.25s; }
.footer-socials a:hover { background: var(--green); border-color: var(--green); color: #fff; transform: translateY(-2px); }

.footer-col h4 { color: var(--charcoal); font-size: 0.85rem; font-weight: 700; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }
.footer-col h4 i { color: var(--red); font-size: 0.8rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li { display: flex; align-items: center; gap: 8px; }
.footer-col ul li i.fa-chevron-right { color: var(--red); font-size: 0.6rem; flex-shrink: 0; }
.footer-col ul li, .footer-col ul li a { color: var(--steel); font-size: 0.84rem; text-decoration: none; transition: all 0.2s; }
.footer-col ul li a:hover { color: var(--red); padding-left: 4px; }

.footer-contact-list { list-style: none; display: flex; flex-direction: column; gap: 12px; margin-bottom: 18px; }
.footer-contact-list li { display: flex; align-items: center; gap: 10px; }
.fc-icon { width: 32px; height: 32px; background: var(--light); border: 1px solid var(--border); border-radius: 7px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.fc-icon i { font-size: 0.8rem; color: var(--steel); }
.fc-icon.green { background: rgba(37,211,102,0.1); border-color: rgba(37,211,102,0.2); }
.fc-icon.green i { color: var(--green); }
.fc-icon.blue { background: rgba(59,130,246,0.1); border-color: rgba(59,130,246,0.2); }
.fc-icon.blue i { color: #3b82f6; }
.footer-contact-list span, .footer-contact-list a { color: var(--steel); font-size: 0.84rem; text-decoration: none; transition: color 0.2s; }
.footer-contact-list a:hover { color: var(--green); }

.footer-badge { display: flex; align-items: center; gap: 8px; background: rgba(229,9,9,0.08); border: 1px solid rgba(229,9,9,0.15); border-radius: 6px; padding: 10px 12px; }
.footer-badge i { color: var(--red); font-size: 0.85rem; }
.footer-badge span { color: var(--steel); font-size: 0.78rem; font-weight: 600; }

.footer-bottom { background: var(--light); padding: 18px 0; border-top: 1px solid var(--border); }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.footer-bottom p { color: var(--steel); font-size: 0.8rem; }
.footer-bottom p strong { color: var(--charcoal); }
.footer-bottom-links { display: flex; align-items: center; gap: 6px; color: var(--steel); font-size: 0.8rem; }
.fbl-dot { color: var(--border); }
.footer-bottom-links strong { color: var(--charcoal); }
.footer-bottom-links a { color: var(--charcoal); text-decoration: none; transition: color 0.2s; }
.footer-bottom-links a:hover { color: var(--red); }
.footer-bottom-links i { color: var(--red); font-size: 0.7rem; }

/* ── FLOATING ── */
.wa-float { position: fixed; bottom: 28px; right: 28px; width: 54px; height: 54px; background: var(--green); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; text-decoration: none; box-shadow: 0 6px 20px rgba(37,211,102,0.4); z-index: 998; transition: transform 0.3s; animation: pulse 2.5s infinite; }
.wa-float:hover { transform: scale(1.1); }
.back-to-top { position: fixed; bottom: 92px; right: 30px; width: 38px; height: 38px; background: var(--charcoal); color: #fff; border: none; border-radius: 5px; cursor: pointer; font-size: 0.85rem; display: flex; align-items: center; justify-content: center; z-index: 997; opacity: 0; transform: translateY(10px); transition: all 0.3s; }
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { background: var(--red); }

/* ── ANIMATIONS ── */
@keyframes pulse { 0%,100% { box-shadow: 0 6px 20px rgba(37,211,102,0.4); } 50% { box-shadow: 0 6px 32px rgba(37,211,102,0.65); } }
[data-aos] { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
[data-aos].aos-animate { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: var(--white); border-bottom: 2px solid var(--border); padding: 14px 24px 20px; gap: 2px; box-shadow: 0 8px 20px rgba(0,0,0,0.07); }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .nav-cta span { display: none; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cl-map iframe { height: 180px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-box { padding: 36px 28px; flex-direction: column; align-items: flex-start; }
  .about-features { grid-template-columns: 1fr; }
  .topbar-inner { justify-content: center; }
  .hb-item { padding: 16px 20px; font-size: 0.82rem; }
}
@media (max-width: 540px) {
  .prod-grid, .why-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cf-card, .cl-card { padding: 22px; }
  .container { padding: 0 16px; }
  .hero-content { padding: 60px 16px 40px; }
  h2 { font-size: 1.8rem; }
  .fcs-btn { width: 100%; justify-content: center; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
}