/* ============================================================
   AFaDa — Website giới thiệu
   Stack: HTML tĩnh + CSS thuần (không framework)
   ============================================================ */

:root {
  /* Màu thương hiệu */
  --primary: #00ab55;
  --primary-dark: #008f47;
  --primary-darker: #006b35;
  --primary-light: #5edfa2;
  --primary-50: #e6f7ee;
  --primary-soft: #f0fbf6;

  /* Màu app con */
  --gas-color: #f59e0b;
  --gas-bg: #fef3c7;
  --laundry-color: #0284c7;
  --laundry-bg: #e0f2fe;
  --rental-color: #eb3f92;
  --rental-bg: #fce7f3;

  /* Trung tính */
  --text-dark: #0e1f17;
  --text-body: #2a3e34;
  --text-muted: #5a6a62;
  --text-light: #8a9690;
  --border: #e6ecea;
  --bg-white: #ffffff;
  --bg-soft: #f6faf8;
  --bg-dark: #0d1f17;
  --bg-dark-2: #00341d;

  /* Hiệu ứng */
  --shadow-sm: 0 1px 3px rgba(14, 31, 23, .06);
  --shadow-md: 0 4px 14px rgba(14, 31, 23, .08);
  --shadow-lg: 0 12px 32px rgba(14, 31, 23, .10);
  --shadow-xl: 0 24px 60px rgba(14, 31, 23, .14);
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 50px;

  --font: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --container: 1170px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font);
  color: var(--text-body);
  background: var(--bg-white);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Nút ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 16px;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 6px 20px rgba(0, 171, 85, .35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0, 171, 85, .45); }
.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary-dark);
  background: #fff;
}
.btn-outline:hover { background: var(--primary-50); transform: translateY(-2px); }
.btn-white {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(0, 0, 0, .18);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0, 0, 0, .25); }
.btn-ghost-white {
  border: 2px solid rgba(255, 255, 255, .6);
  color: #fff;
}
.btn-ghost-white:hover { background: rgba(255, 255, 255, .12); }

/* ---------- Tiêu đề section ---------- */
.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.eyebrow {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-50);
  color: var(--primary-dark);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.2;
  letter-spacing: -.02em;
  margin-bottom: 14px;
}
.section-head p { font-size: 17px; color: var(--text-muted); }

/* ---------- Thanh điều hướng ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: all .3s ease;
}
.navbar.scrolled { border-bottom-color: var(--border); box-shadow: var(--shadow-md); }
.navbar::before {
  content: '';
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--primary));
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo img { height: 40px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  font-weight: 500;
  font-size: 15px;
  color: var(--text-body);
  transition: color .2s;
}
.nav-links a:hover { color: var(--primary); }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.nav-login { font-weight: 600; font-size: 15px; color: var(--text-body); }
.nav-login:hover { color: var(--primary); }
.nav-cta { padding: 10px 22px; font-size: 15px; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  width: 24px; height: 2.5px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all .3s;
}
.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 24px 20px;
  background: #fff;
  border-top: 1px solid var(--border);
}
.nav-mobile a { padding: 10px 0; font-weight: 500; border-bottom: 1px solid var(--bg-soft); }
.nav-mobile .btn { margin-top: 12px; }
.nav-mobile.open { display: flex; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 150px 0 90px;
  background:
    radial-gradient(ellipse 60% 50% at 85% 20%, rgba(94, 223, 162, .25), transparent),
    radial-gradient(ellipse 50% 60% at 10% 80%, rgba(0, 171, 85, .12), transparent),
    linear-gradient(160deg, #f0fbf6 0%, #ffffff 55%, #e6f7ee 100%);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: #fff;
  border: 1px solid var(--primary-50);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 22px;
}
.hero-badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse-dot 1.8s infinite;
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 171, 85, .5); }
  50% { box-shadow: 0 0 0 6px rgba(0, 171, 85, 0); }
}
.hero h1 {
  font-size: clamp(34px, 4.8vw, 56px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.025em;
  color: var(--text-dark);
  margin-bottom: 20px;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 30px;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }
.store-badges { display: flex; gap: 12px; flex-wrap: wrap; }
.store-badges img { height: 48px; width: auto; border-radius: 8px; transition: transform .25s; }
.store-badges a:hover img { transform: translateY(-3px); }

.hero-visual { position: relative; display: flex; justify-content: center; }
.hero-visual img {
  max-width: min(420px, 100%);
  filter: drop-shadow(0 30px 60px rgba(0, 107, 53, .25));
  animation: float 4.5s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}
.hero-chip {
  position: absolute;
  background: #fff;
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  animation: float 5.5s ease-in-out infinite;
}
.hero-chip .chip-icon {
  width: 34px; height: 34px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px;
}
.hero-chip small { display: block; font-weight: 500; color: var(--text-light); font-size: 12px; }
.chip-1 { top: 8%; left: -2%; animation-delay: .6s; }
.chip-1 .chip-icon { background: var(--primary-50); }
.chip-2 { bottom: 14%; right: -4%; animation-delay: 1.2s; }
.chip-2 .chip-icon { background: var(--gas-bg); }

/* ---------- Dải số liệu ---------- */
.trust-strip {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-darker));
  padding: 40px 0;
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.trust-item .num {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
}
.trust-item .label { color: rgba(255, 255, 255, .85); font-size: 14px; margin-top: 6px; }

/* ---------- Giới thiệu all-in-one ---------- */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.intro-visual img { border-radius: var(--radius-lg); }
.intro-content h2 {
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.22;
  letter-spacing: -.02em;
  margin-bottom: 16px;
}
.intro-content > p { font-size: 17px; color: var(--text-muted); margin-bottom: 26px; }
.check-list li {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  font-size: 16px;
  color: var(--text-body);
}
.check-list .check {
  flex-shrink: 0;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--primary-50);
  color: var(--primary-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  font-weight: 800;
  margin-top: 2px;
}
.check-list strong { color: var(--text-dark); }

/* ---------- Tính năng ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: all .3s ease;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}
.feature-icon {
  width: 58px; height: 58px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.feature-icon img { width: 40px; height: 40px; }
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.feature-card p { font-size: 15px; color: var(--text-muted); }

/* ---------- Hệ sinh thái ---------- */
.eco-section {
  background:
    radial-gradient(ellipse 50% 40% at 50% 0%, rgba(0, 171, 85, .10), transparent),
    var(--bg-soft);
}
.eco-hub {
  position: relative;
  max-width: 860px;
  margin: 0 auto 20px;
  text-align: center;
}
.eco-parent {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 30px 56px;
  box-shadow: 0 20px 50px rgba(0, 143, 71, .35);
  position: relative;
  z-index: 2;
}
.eco-parent img { height: 46px; width: auto; background: #fff; border-radius: 10px; padding: 6px 12px; }
.eco-parent .eco-parent-title { font-size: 22px; font-weight: 800; }
.eco-parent .eco-parent-sub { font-size: 14px; opacity: .9; max-width: 340px; }
.eco-connector {
  width: 2px;
  height: 44px;
  margin: 0 auto;
  background: linear-gradient(to bottom, var(--primary), var(--border));
}
.eco-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 8px;
}
.eco-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: left;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.eco-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
  background: var(--accent, var(--primary));
}
.eco-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.eco-card-gas { --accent: linear-gradient(90deg, #f59e0b, #d97706); }
.eco-card-laundry { --accent: linear-gradient(90deg, #0284c7, #0369a1); }
.eco-card-rental { --accent: linear-gradient(90deg, #eb3f92, #dd2590); }
.eco-card-head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.eco-card-head img {
  width: 52px; height: 52px;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}
.eco-card-head h3 { font-size: 19px; font-weight: 800; color: var(--text-dark); }
.eco-card-head .eco-domain { font-size: 13px; color: var(--text-light); font-weight: 500; }
.eco-card > p { font-size: 15px; color: var(--text-muted); margin-bottom: 16px; }
.eco-feats { margin-bottom: 22px; flex: 1; }
.eco-feats li {
  position: relative;
  padding: 5px 0 5px 24px;
  font-size: 14.5px;
  color: var(--text-body);
}
.eco-feats li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 800;
}
.eco-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 15px;
  color: var(--primary-dark);
  transition: gap .2s;
}
.eco-link:hover { gap: 10px; }
.eco-note {
  text-align: center;
  margin-top: 36px;
  font-size: 15px;
  color: var(--text-muted);
}
.eco-note strong { color: var(--primary-dark); }

/* ---------- Ngành hàng ---------- */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}
.industry-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 12px;
  text-align: center;
  transition: all .25s ease;
}
.industry-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}
.industry-item img { width: 56px; height: 56px; margin: 0 auto 10px; }
.industry-item span { font-size: 14px; font-weight: 600; color: var(--text-body); }

/* ---------- Sổ sách tự động ---------- */
.auto-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.auto-grid .intro-visual { order: 2; }
.auto-grid .intro-content { order: 1; }

/* ---------- Quy trình ---------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 28px 30px;
  transition: all .3s ease;
}
.step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.step-num {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  box-shadow: 0 6px 16px rgba(0, 171, 85, .35);
}
.step-card h3 { font-size: 18px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.step-card p { font-size: 15px; color: var(--text-muted); }

/* ---------- Đánh giá ---------- */
.testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testi-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: all .3s ease;
}
.testi-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.stars { color: #fbbf24; font-size: 16px; letter-spacing: 2px; margin-bottom: 14px; }
.testi-card blockquote {
  font-size: 15px;
  color: var(--text-body);
  margin-bottom: 20px;
  font-style: italic;
}
.testi-author { display: flex; align-items: center; gap: 12px; }
.testi-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: 16px;
  color: #fff;
}
.testi-author .name { font-weight: 700; font-size: 15px; color: var(--text-dark); }
.testi-author .role { font-size: 13px; color: var(--text-light); }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 780px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow .25s;
}
.faq-item.open { box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
}
.faq-q .faq-icon {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--primary-50);
  color: var(--primary-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  font-weight: 700;
  transition: transform .3s;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-a-inner {
  padding: 0 24px 22px;
  font-size: 15px;
  color: var(--text-muted);
}

/* ---------- CTA tải app ---------- */
.cta-section {
  background:
    radial-gradient(ellipse 60% 60% at 20% 20%, rgba(94, 223, 162, .18), transparent),
    linear-gradient(135deg, var(--primary-darker), var(--primary-dark));
  padding: 90px 0;
  text-align: center;
  color: #fff;
}
.cta-section h2 {
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 14px;
}
.cta-section > .container > p {
  font-size: 18px;
  opacity: .9;
  max-width: 560px;
  margin: 0 auto 36px;
}
.cta-qr-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 32px;
}
.cta-qr-wrap img {
  width: 170px; height: 170px;
  border-radius: 18px;
  background: #fff;
  padding: 10px;
  position: relative;
  z-index: 1;
}
.cta-qr-wrap::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 24px;
  border: 2px solid rgba(255, 255, 255, .5);
  animation: pulse-ring 1.9s ease-out infinite;
}
@keyframes pulse-ring {
  0% { transform: scale(.95); opacity: 1; }
  100% { transform: scale(1.14); opacity: 0; }
}
.cta-qr-note { font-size: 14px; opacity: .85; margin-bottom: 28px; }
.cta-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

/* ---------- Chân trang ---------- */
.footer {
  background: var(--bg-dark);
  color: #b8c6bf;
  padding: 64px 0 0;
  font-size: 14.5px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer-brand > img { height: 42px; width: auto; background: #fff; border-radius: 8px; padding: 5px 10px; margin-bottom: 16px; }
.footer-brand p { margin-bottom: 18px; max-width: 300px; }
.footer h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.footer-col li { margin-bottom: 11px; }
.footer-col a { transition: color .2s; }
.footer-col a:hover { color: var(--primary-light); }
.footer-contact li {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
  align-items: flex-start;
}
.footer-contact .ico { flex-shrink: 0; margin-top: 1px; }
.footer-contact a:hover { color: var(--primary-light); }
.footer-socials { display: flex; gap: 12px; margin-top: 4px; }
.footer-socials a {
  width: 40px; height: 40px;
  border-radius: 50%;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  transition: transform .2s, box-shadow .2s;
}
.footer-socials a:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0, 171, 85, .4); }
.footer-socials img { width: 100%; height: 100%; object-fit: cover; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 22px 0;
  text-align: center;
  font-size: 13.5px;
  color: #7d8f86;
}
.footer-bottom a { color: #b8c6bf; }
.footer-bottom a:hover { color: var(--primary-light); }

/* ---------- Nút liên hệ nổi ---------- */
.fab-wrap {
  position: fixed;
  right: 22px;
  bottom: 24px;
  z-index: 1100;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}
.fab-items {
  display: flex;
  flex-direction: column;
  gap: 10px;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: all .25s ease;
}
.fab-wrap.open .fab-items { opacity: 1; transform: translateY(0); pointer-events: auto; }
.fab-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-lg);
  padding: 8px 16px 8px 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  transition: transform .2s;
}
.fab-item:hover { transform: translateX(-4px); }
.fab-item img { width: 34px; height: 34px; }
.fab-main {
  width: 58px; height: 58px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(0, 171, 85, .45);
  position: relative;
  transition: transform .25s;
}
.fab-main:hover { transform: scale(1.06); }
.fab-main::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid rgba(0, 171, 85, .45);
  animation: pulse-ring 1.8s ease-out infinite;
}
.fab-main svg { width: 26px; height: 26px; fill: #fff; }

/* ---------- Hiệu ứng cuộn ---------- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .65s cubic-bezier(.22, .61, .36, 1), transform .65s cubic-bezier(.22, .61, .36, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-left { transform: translateX(-36px); }
.reveal-left.visible { transform: translateX(0); }
.reveal-right { transform: translateX(36px); }
.reveal-right.visible { transform: translateX(0); }

/* ---------- Responsive ---------- */
@media (max-width: 1020px) {
  .nav-links, .nav-actions { display: none; }
  .nav-toggle { display: flex; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-ctas, .store-badges { justify-content: center; }
  .hero-visual { margin-top: 20px; }
  .hero-chip { display: none; }
  .features-grid, .eco-grid, .steps-grid, .testi-grid { grid-template-columns: repeat(2, 1fr); }
  .industries-grid { grid-template-columns: repeat(4, 1fr); }
  .intro-grid, .auto-grid { grid-template-columns: 1fr; gap: 36px; }
  .auto-grid .intro-visual { order: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .hero { padding: 120px 0 64px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .features-grid, .eco-grid, .steps-grid, .testi-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 430px) {
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .btn { width: 100%; }
  .hero-ctas .btn { width: 100%; }
  .cta-actions .btn { width: 100%; }
}