/* ========== CSS ZALO ========== */
.zalo-phone-ring-wrap {
  position: fixed;
  bottom: 0;
  right: 0;           /* <-- đổi sang phải */
  z-index: 999999;
}
.zalo-phone-ring {
  position: relative;
  width: 110px;
  height: 110px;
  cursor: pointer;
  -webkit-backface-visibility: hidden;
  -webkit-transform: translateZ(0);
}

.zalo-phone-ring-circle {
  width: 85px; height: 85px;
  top: 10px; left: 10px;
  position: absolute;
  border-radius: 100%;
  border: 2px solid #0068FF;
  -webkit-animation: zalo-circle-anim 1.2s infinite ease-in-out;
  animation: zalo-circle-anim 1.2s infinite ease-in-out;
  transform-origin: 50% 50%;
  opacity: 0.5;
}

.zalo-phone-ring-circle-fill {
  width: 55px; height: 55px;
  top: 25px; left: 25px;
  position: absolute;
  background-color: rgba(0, 104, 255, 0.15);
  border-radius: 100%;
  -webkit-animation: zalo-circle-fill-anim 2.3s infinite ease-in-out;
  animation: zalo-circle-fill-anim 2.3s infinite ease-in-out;
  transform-origin: 50% 50%;
}

.zalo-phone-ring-img-circle {
  width: 45px; height: 45px;  /* to hơn Hotline vì dùng ảnh */
  top: 31px; left: 31px;
  position: absolute;
  border-radius: 100%;
  overflow: hidden;
  border: 2px solid #fff;
  box-shadow: 0 2px 8px rgba(0, 104, 255, 0.35);
  -webkit-animation: zalo-img-anim 3s infinite ease-in-out;
  animation: zalo-img-anim 3s infinite ease-in-out;
  transform-origin: 50% 50%;
}
.zalo-phone-ring-img-circle img {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
}

@keyframes zalo-circle-anim {
  0%   { transform: scale(0.5); opacity: 0.1; }
  30%  { transform: scale(0.7); opacity: 0.5; }
  100% { transform: scale(1);   opacity: 0.1; }
}
@keyframes zalo-circle-fill-anim {
  0%, 100% { transform: scale(0.7); opacity: 0.4; }
  50%      { transform: scale(1);   opacity: 0.6; }
}
@keyframes zalo-img-anim {
  0%, 100% { transform: scale(1);    box-shadow: 0 2px 8px rgba(0,104,255,0.3); }
  50%      { transform: scale(1.08); box-shadow: 0 4px 16px rgba(0,104,255,0.5); }
}

/* ========== CSS VARIABLES ========== */
:root {
    --primary: #F26522;
    --primary-dark: #D4550F;
    --primary-light: #FF8A50;
    --primary-bg: #FFF5EE;
    --dark: #1A1A2E;
    --dark-secondary: #2D2D44;
    --gray-900: #111827;
    --gray-700: #374151;
    --gray-600: #4B5563;
    --gray-500: #6B7280;
    --gray-400: #9CA3AF;
    --gray-200: #E5E7EB;
    --gray-100: #F3F4F6;
    --gray-50: #F9FAFB;
    --white: #FFFFFF;
    --green: #10B981;
    --blue: #3B82F6;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== RESET & BASE ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    font-family: 'Be Vietnam Pro', sans-serif;
    color: var(--gray-700);
    line-height: 1.7;
    background: var(--white);
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }

/* ========== UTILITY ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-dark { background: var(--dark); color: var(--white); }
.section-light { background: var(--gray-50); }
.section-accent { background: var(--primary-bg); }
.text-center { text-align: center; }

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary);
    margin-bottom: 16px;
}
.section-label::before {
    content: '';
    width: 32px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}
.section-title {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 900;
    color: var(--gray-900);
    line-height: 1.2;
    margin-bottom: 16px;
}
.section-dark .section-title { color: var(--white); }
.section-subtitle {
    font-size: 17px;
    color: var(--gray-500);
    max-width: 640px;
    margin: 0 auto 48px;
}
.section-dark .section-subtitle { color: rgba(255,255,255,0.6); }

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    white-space: nowrap;
}
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(242,101,34,0.4); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.4); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: var(--white); }
.btn-icon { width: 18px; height: 18px; }

/* ========== ANIMATIONS ========== */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInRight { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ========== HEADER ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0;
    transition: var(--transition);
    background: #fff;
    box-shadow: 0 1px 0 rgba(0,0,0,0.08);
}
.header.scrolled {
    background: #fff;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-md);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    position: relative;
}
.logo { display: flex; align-items: center; }
.logo img { height: 40px; width: auto; }
.nav { display: flex; align-items: center; gap: 32px; }
.nav a {
    font-size: 15px;
    font-weight: 700;
    color: var(--gray-700);
    transition: var(--transition);
}
.header.scrolled .nav a { color: var(--gray-700); }
.nav a:hover { color: var(--primary); }
.header-cta .btn { padding: 10px 24px; font-size: 14px; }
.mobile-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; flex-shrink: 0; }
.mobile-toggle span { display: block; width: 24px; height: 2px; background: #1A1A2E; border-radius: 2px; transition: var(--transition); }
.header.scrolled .mobile-toggle span { background: var(--gray-900); }
.mobile-cta-btn { display: none; }

/* ========== HERO ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--dark) 0%, #16213E 50%, var(--dark-secondary) 100%);
    overflow: hidden;
    padding-top: 72px;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(242,101,34,0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: heroGlow 8s ease-in-out infinite alternate;
}
@keyframes heroGlow {
    from { transform: scale(1) translate(0, 0); }
    to { transform: scale(1.2) translate(-40px, 30px); }
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(242,101,34,0.15);
    border: 1px solid rgba(242,101,34,0.3);
    border-radius: 50px;
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease-out;
}
.hero-title {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 900;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 20px;
    animation: fadeInUp 0.6s ease-out 0.1s backwards;
}
.hero-title .highlight {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: 17px;
    color: rgba(255,255,255,0.65);
    margin-bottom: 36px;
    max-width: 520px;
    animation: fadeInUp 0.6s ease-out 0.2s backwards;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
    animation: fadeInUp 0.6s ease-out 0.3s backwards;
}
.hero-stats {
    display: flex;
    gap: 40px;
    animation: fadeInUp 0.6s ease-out 0.4s backwards;
}
.hero-stat-number { font-size: 36px; font-weight: 900; color: var(--primary); }
.hero-stat-label { font-size: 13px; color: rgba(255,255,255,0.5); margin-top: 2px; }
.hero-visual {
    position: relative;
    animation: fadeInRight 0.8s ease-out 0.3s backwards;
}
.hero-image-main {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.08);
    overflow: hidden;
    box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}
.hero-image-main img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero-float-card {
    position: absolute;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-radius: var(--radius);
    padding: 8px 12px;
    box-shadow: var(--shadow-lg);
    animation: float 4s ease-in-out infinite;
    display: flex;
    align-items: center;
    gap: 8px;
}
.hero-float-card.card-1 { bottom: -16px; left: -20px; }
.hero-float-card.card-2 { top: 16px; right: -16px; animation-delay: 1.5s; }
.float-card-icon {
    width: 32px; height: 32px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.float-card-icon svg { width: 16px; height: 16px; }
.float-card-icon.green { background: rgba(16,185,129,0.12); color: var(--green); }
.float-card-icon.orange { background: rgba(242,101,34,0.12); color: var(--primary); }
.float-card-title { font-size: 12px; font-weight: 700; color: var(--gray-900); }
.float-card-desc { font-size: 11px; color: var(--gray-500); }
@media (max-width: 768px) { .hero-float-card { display: none; } }

/* ========== PRICE BADGE ========== */
.price-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(16,185,129,0.15);
    border: 1px solid rgba(16,185,129,0.3);
    border-radius: 50px;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 700;
    color: #10B981;
    margin-bottom: 12px;
}

/* ========== PROBLEMS ========== */
.problems-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}
.problem-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    text-align: center;
}
.problem-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--primary);
    transform: scaleX(0);
    transition: var(--transition);
}
.problem-card:hover::before { transform: scaleX(1); }
.problem-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.problem-icon {
    width: 52px; height: 52px; border-radius: 12px;
    background: var(--primary-bg); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; font-size: 24px;
}
.problem-card h3 { font-size: 17px; font-weight: 700; color: var(--gray-900); margin-bottom: 10px; }
.problem-card p { font-size: 14px; color: var(--gray-500); line-height: 1.6; }

/* ========== MATERIAL CARDS ========== */
.material-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 48px;
}
.material-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}
.material-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.material-icon { font-size: 36px; margin-bottom: 12px; }
.material-card h3 { font-size: 16px; font-weight: 800; color: var(--gray-900); margin-bottom: 8px; }
.material-card p { font-size: 13px; color: var(--gray-500); line-height: 1.6; }
.material-tag {
    display: inline-block;
    margin-top: 10px;
    padding: 3px 10px;
    background: var(--primary-bg);
    color: var(--primary);
    border-radius: 50px;
    font-size: 11px;
    font-weight: 700;
}

/* ========== COMPARISON TABLE ========== */
.compare-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 40px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.compare-table th {
    background: var(--gray-900);
    color: var(--white);
    padding: 16px 20px;
    font-size: 15px;
    font-weight: 700;
    text-align: left;
}
.compare-table th.highlight-col { background: var(--primary); }
.compare-table td {
    padding: 14px 20px;
    font-size: 14px;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-700);
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:nth-child(even) td { background: var(--gray-50); }
.compare-table td.highlight-col { background: var(--primary-bg); font-weight: 600; color: var(--gray-900); }
.compare-table tr:nth-child(even) td.highlight-col { background: #FEECD8; }
.badge-best {
    display: inline-block;
    padding: 2px 8px;
    background: var(--primary);
    color: white;
    border-radius: 50px;
    font-size: 10px;
    font-weight: 700;
    margin-left: 6px;
}

/* ========== FEATURES ========== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}
.feature-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    text-align: center;
}
.feature-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--primary);
    transform: scaleX(0);
    transition: var(--transition);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-icon {
    width: 52px; height: 52px; border-radius: 12px;
    background: var(--primary-bg); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; font-size: 24px;
}
.feature-card h3 { font-size: 17px; font-weight: 700; color: var(--gray-900); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--gray-500); line-height: 1.7; }

/* ========== USE CASES ========== */
.usecase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}
.usecase-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    text-align: center;
}
.usecase-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--primary);
    transform: scaleX(0);
    transition: var(--transition);
}
.usecase-card:hover::before { transform: scaleX(1); }
.usecase-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.usecase-icon {
    width: 52px; height: 52px; border-radius: 12px;
    background: var(--primary-bg); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; font-size: 24px;
}
.usecase-card h3 { font-size: 17px; font-weight: 700; color: var(--gray-900); margin-bottom: 10px; }
.usecase-card p { font-size: 14px; color: var(--gray-500); line-height: 1.7; }

/* ========== STATS ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}
.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.stat-number { font-size: clamp(28px, 5vw, 48px); font-weight: 900; color: var(--primary); line-height: 1; margin-bottom: 8px; word-break: keep-all; }
.stat-number span { font-size: 0.6em; }
.stat-label { font-size: 14px; font-weight: 500; color: var(--gray-500); }

/* ========== WHY ========== */
.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
    text-align: left;
}
.why-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}
.why-card:hover { box-shadow: var(--shadow-lg); border-color: var(--primary); }
.why-number { font-size: 48px; font-weight: 900; color: var(--gray-100); line-height: 1; margin-bottom: 12px; }
.why-card h3 { font-size: 17px; font-weight: 800; color: var(--gray-900); margin-bottom: 8px; }
.why-card p { font-size: 14px; color: var(--gray-500); line-height: 1.7; }

/* ========== PROCESS ========== */
.process-track {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin-top: 60px;
    position: relative;
}
.process-track::before {
    content: '';
    position: absolute;
    top: 32px; left: 12.5%; right: 12.5%;
    height: 2px;
    background: linear-gradient(to right, var(--primary), rgba(242,101,34,0.2));
}
.process-step { text-align: center; padding: 0 16px; }
.process-dot {
    width: 64px; height: 64px;
    background: var(--primary);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; font-weight: 900; color: var(--white);
    margin: 0 auto 20px;
    position: relative; z-index: 1;
    box-shadow: 0 0 0 8px rgba(242,101,34,0.1);
}
.process-step h3 { font-size: 16px; font-weight: 800; color: var(--white); margin-bottom: 8px; }
.process-step p { font-size: 13px; color: rgba(255,255,255,0.6); }

/* ========== TESTIMONIALS ========== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}
.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow-lg); }
.testimonial-stars { color: #F59E0B; font-size: 18px; margin-bottom: 16px; }
.testimonial-text { font-size: 14px; color: var(--gray-600); line-height: 1.8; font-style: italic; margin-bottom: 20px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.author-avatar {
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--primary-bg);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 800; color: var(--primary);
    flex-shrink: 0;
}
.author-name { font-size: 14px; font-weight: 700; color: var(--gray-900); }
.author-role { font-size: 12px; color: var(--gray-500); }

/* ========== CLIENTS ========== */
.clients-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    margin-top: 48px;
}
.client-logo {
    width: 140px; height: 72px;
    background: #fff;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
    border: 1px solid var(--gray-200);
    padding: 10px 16px;
}
.client-logo img { max-width: 100%; max-height: 100%; object-fit: contain; filter: grayscale(100%); opacity: 0.65; transition: var(--transition); }
.client-logo:hover { box-shadow: var(--shadow-md); border-color: transparent; }
.client-logo:hover img { filter: grayscale(0%); opacity: 1; }

/* ========== FAQ ========== */
.faq-list { max-width: 800px; margin: 0 auto; text-align: left; }
.faq-item { border-bottom: 1px solid var(--gray-200); }
.faq-question {
    width: 100%; text-align: left; padding: 20px 0;
    background: none; border: none; cursor: pointer;
    font-size: 16px; font-weight: 700; color: var(--gray-900);
    display: flex; justify-content: space-between; align-items: center;
    gap: 16px; transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-icon { width: 28px; height: 28px; border-radius: 50%; background: var(--gray-100); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 300; flex-shrink: 0; transition: var(--transition); }
.faq-item.active .faq-icon { background: var(--primary); color: var(--white); transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-answer-inner { padding: 0 0 20px; font-size: 15px; color: var(--gray-600); line-height: 1.8; }

/* ========== CTA SECTION ========== */
.cta-section { background: linear-gradient(135deg, var(--dark) 0%, #16213E 100%); }
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.cta-content h2 { font-size: clamp(28px, 3.5vw, 40px); font-weight: 900; color: var(--white); margin-bottom: 16px; }
.cta-content p { font-size: 16px; color: rgba(255,255,255,0.65); margin-bottom: 28px; }
.cta-benefits { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.cta-benefits li { display: flex; align-items: center; gap: 12px; font-size: 15px; color: rgba(255,255,255,0.85); }
.cta-benefits li svg { width: 18px; height: 18px; color: var(--green); flex-shrink: 0; }
.form-card { background: var(--white); border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-xl); }
.form-card h3 { font-size: 22px; font-weight: 800; color: var(--gray-900); margin-bottom: 6px; }
.form-subtitle { font-size: 14px; color: var(--gray-500); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; font-weight: 600; color: var(--gray-700); margin-bottom: 6px; }
.form-input, .form-select, .form-textarea {
    width: 100%; padding: 12px 16px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 14px; font-family: inherit; color: var(--gray-900);
    transition: var(--transition); background: var(--white);
}
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(242,101,34,0.1); }
.form-textarea { resize: vertical; min-height: 100px; }
.form-submit { width: 100%; justify-content: center; padding: 16px; font-size: 16px; margin-top: 8px; }
.form-note { text-align: center; font-size: 12px; color: var(--gray-400); margin-top: 12px; }
.form-success { text-align: center; padding: 40px 20px; display: none; }
.form-success.show { display: block; }
.form-success svg { width: 64px; height: 64px; color: var(--green); margin: 0 auto 16px; }
.form-success h4 { font-size: 20px; font-weight: 800; color: var(--gray-900); margin-bottom: 8px; }
.form-success p { font-size: 14px; color: var(--gray-500); }

/* ========== FOOTER ========== */
.footer { background: var(--gray-900); color: rgba(255,255,255,0.6); padding: 60px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1.5fr 1.5fr; gap: 48px; margin-bottom: 48px; }
.footer-brand p { font-size: 14px; line-height: 1.7; margin-top: 16px; }
.footer h4 { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 20px; }
.footer-contact { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 13px; line-height: 1.6; }
.footer-contact li svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 2px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; text-align: center; font-size: 13px; }

/* ========== FLOATING CTA ========== */
.floating-cta {
    position: fixed; bottom: 0; left: 0; right: 0;
    background: var(--white); border-top: 1px solid var(--gray-200);
    padding: 12px 24px; z-index: 999; display: none;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
}
.floating-cta .btn { width: 100%; }
.floating-cta { display: none !important; }

/* ========== ABOUT 3A – LIGHT BG OVERRIDES ========== */
/* Used when about section sits on a light/white background (id="about" or id="ve-3a") */
#about .about-stat,
#ve-3a .about-stat { background: var(--gray-50); border-color: var(--gray-200); }
#about .about-stat-label,
#ve-3a .about-stat-label { color: var(--gray-500); }
#about .about-stat-badge,
#ve-3a .about-stat-badge { color: var(--primary); }
#about .about-story-text h3,
#ve-3a .about-story-text h3 { color: var(--gray-900); }
#about .about-story-text p,
#ve-3a .about-story-text p { color: var(--gray-600); }
#about .about-story-tags span,
#ve-3a .about-story-tags span { background: rgba(242,101,34,0.08); color: var(--gray-700); border: 1px solid rgba(242,101,34,0.2); }
#about .about-story-img-label,
#ve-3a .about-story-img-label { background: rgba(0,0,0,0.45); }

/* ========== SPEC TABLE ========== */
.spec-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
}
.spec-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}
.spec-card-head { background: var(--primary); color: #fff; padding: 14px 20px; font-size: 15px; font-weight: 800; }
.spec-card-body { padding: 16px 20px; }
.spec-row { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--gray-100); font-size: 13px; }
.spec-row:last-child { border-bottom: none; }
.spec-key { font-weight: 700; color: var(--gray-700); min-width: 130px; flex-shrink: 0; }
.spec-val { color: var(--gray-600); line-height: 1.5; }
@media (max-width: 768px) { .spec-grid { grid-template-columns: 1fr; } }

/* ========== CASE STUDY GRID ========== */
.case-study-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 40px;
}
.case-study-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}
.case-study-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.case-study-item img { width: 100%; aspect-ratio: 3/2; object-fit: cover; display: block; }
.case-study-label { padding: 12px 14px; background: var(--white); }
.case-study-label .client-name { font-size: 13px; font-weight: 800; color: var(--gray-900); margin-bottom: 3px; }
.case-study-label .order-info { font-size: 11px; color: var(--gray-500); }
@media (max-width: 1024px) { .case-study-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .case-study-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .case-study-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; } }

/* ========== FINAL CTA ========== */
.final-cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, #d4541a 100%);
    padding: 80px 24px;
    text-align: center;
}
.final-cta-title {
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 900;
    color: #fff;
    margin-bottom: 14px;
    line-height: 1.15;
}
.final-cta-sub {
    font-size: clamp(15px, 2vw, 20px);
    color: rgba(255,255,255,0.88);
    margin-bottom: 36px;
}
.final-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    color: var(--primary);
    border: none;
    font-size: 17px;
    font-weight: 800;
    padding: 18px 48px;
    border-radius: 50px;
    box-shadow: 0 12px 32px rgba(0,0,0,0.18);
    text-decoration: none;
    transition: var(--transition);
}
.final-cta-btn:hover { background: var(--gray-50); transform: translateY(-3px); box-shadow: 0 20px 40px rgba(0,0,0,0.22); }
.final-cta-btn .btn-icon { stroke: var(--primary); width: 18px; height: 18px; }
@media (max-width: 768px) { .final-cta-section { padding: 60px 20px; } }

/* ========== MOQ NOTE ========== */
.moq-note {
    background: rgba(242,101,34,0.08);
    border: 1px solid rgba(242,101,34,0.25);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 0.82rem;
    color: #fff;
    margin-top: 16px;
    line-height: 1.5;
}
.moq-note strong { color: var(--primary); }

/* ========== MOBILE NAV ========== */
@media (max-width: 768px) {
    .mobile-toggle { display: flex; order: 1; }
    .nav {
        display: none; position: absolute; top: 72px; left: 0; right: 0;
        background: var(--white); flex-direction: column; padding: 24px;
        box-shadow: var(--shadow-lg); gap: 20px;
    }
    .nav a { color: var(--gray-700) !important; font-size: 16px; }
    .nav.mobile-open { display: flex; }
    .header-cta { display: none; }
    .header-inner .logo { order: 2; position: absolute; left: 50%; transform: translateX(-50%); }
    .mobile-cta-btn { display: inline-flex; order: 4; padding: 9px 18px; font-size: 13px; flex-shrink: 0; }
    /* Hero — reorder: title → desc → image → CTA → stats */
    .hero { min-height: unset; padding-top: 96px; padding-bottom: 40px; align-items: flex-start; }
    .hero-grid { display: flex; flex-direction: column; gap: 20px; }
    .hero-content { display: contents; }
    .hero-badge { order: 1; display: none; margin-bottom: 0; }
    .hero-title { order: 2; margin-bottom: 0; text-align: center; }
    .hero-desc { order: 3; margin-bottom: 0; font-size: 15px; text-align: center; max-width: 100%; }
    .hero-visual { order: 4; max-width: 100%; margin: 0; padding-bottom: 0; }
    .hero-actions { order: 5; flex-direction: column; margin-bottom: 0; }
    .hero-stats { order: 6; gap: 24px; }
    .hero-actions .btn { width: 100%; }
    .hero-stat-number { font-size: 28px; }
    .problems-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .problem-card { padding: 20px 16px; }
    .problem-icon { width: 40px; height: 40px; margin-bottom: 12px; font-size: 20px; }
    .problem-card h3 { font-size: 14px; }
    .problem-card p { font-size: 12px; }
    .material-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .material-card { padding: 20px 16px; }
    .material-icon { font-size: 28px; margin-bottom: 8px; }
    .material-card h3 { font-size: 14px; }
    .material-card p { font-size: 12px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .feature-card { padding: 20px 16px; }
    .feature-icon { width: 40px; height: 40px; font-size: 20px; margin-bottom: 12px; }
    .feature-card h3 { font-size: 14px; }
    .feature-card p { font-size: 12px; }
    .usecase-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .usecase-card { padding: 20px 16px; }
    .usecase-icon { width: 40px; height: 40px; font-size: 20px; margin-bottom: 12px; }
    .usecase-card h3 { font-size: 14px; }
    .usecase-card p { font-size: 12px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .stat-card { padding: 24px 12px; }
    .why-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .why-card { padding: 20px 16px; }
    .why-number { font-size: 32px; margin-bottom: 8px; }
    .why-card h3 { font-size: 14px; }
    .why-card p { font-size: 12px; }
    .process-track { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .process-track::before { display: none; }
    .process-step { padding: 0 8px; }
    .process-dot { width: 48px; height: 48px; font-size: 18px; margin-bottom: 12px; }
    .process-step h3 { font-size: 14px; }
    .process-step p { font-size: 12px; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .clients-logos { gap: 20px; }
    .client-logo { width: 100px; height: 48px; }
    /* CTA/Form section — mobile ordering */
    .cta-grid { display: flex; flex-direction: column; gap: 0; align-items: stretch; }
    .cta-content { display: contents; }
    .cta-section .section-label { order: 1; align-self: center; margin-left: auto; margin-right: auto; }
    .cta-section .cta-content h2 { order: 2; text-align: center; width: 100%; }
    .moq-note { order: 3; margin-bottom: 28px; }
    .form-card { order: 4; margin-bottom: 32px; }
    .cta-content p { order: 5; }
    .cta-benefits { order: 6; }
    .cta-promo-box { order: 7; margin-top: 28px; }
    .form-row { grid-template-columns: 1fr 1fr; gap: 12px; }
    .form-group:has(#email),
    .form-group:has(#company) { display: none; }
    .form-textarea { min-height: 64px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .form-card { padding: 20px 16px; }
    .cta-content h2 { font-size: 24px; line-height: 1.3; }
}

/* ========== BGN CATALOG ========== */
.bgn-catalog-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin: 36px 0 32px;
}
.bgn-catalog-tab {
    padding: 9px 20px;
    border-radius: 50px;
    border: 1.5px solid var(--gray-200);
    background: var(--white);
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
}
.bgn-catalog-tab:hover { border-color: var(--primary); color: var(--primary); }
.bgn-catalog-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }

.bgn-catalog-panel { display: none; }
.bgn-catalog-panel.active { display: block; }

.bgn-catalog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    max-width: 960px;
    margin: 0 auto;
}
.bgn-catalog-grid-5 {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    max-width: 1200px;
    margin: 0 auto;
}
.bgn-catalog-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    cursor: pointer;
}
.bgn-catalog-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.bgn-catalog-item img {
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    display: block;
}
.bgn-catalog-grid-5 .bgn-catalog-item img { aspect-ratio: 3/2; }

@media (max-width: 768px) {
    .bgn-catalog-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .bgn-catalog-grid-5 { grid-template-columns: repeat(3, 1fr); gap: 10px; }
}
.bgn-catalog-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    max-width: 960px;
    margin: 0 auto;
}
.bgn-catalog-grid-3 .bgn-catalog-item img { aspect-ratio: 3/2; }

/* ========== BGN CATALOG – TAB ĐẶC BIỆT ========== */
.bgn-catalog-tab.special {
    border-color: #c9963a;
    color: #c9963a;
    background: linear-gradient(135deg, #fffbf0, #fff8e6);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.bgn-catalog-tab.special:hover,
.bgn-catalog-tab.special.active {
    background: linear-gradient(135deg, #c9963a, #e8b84b);
    border-color: #c9963a;
    color: #fff;
}
.bgn-catalog-tab.special svg {
    width: 13px; height: 13px; flex-shrink: 0;
    fill: currentColor; stroke: none;
}

/* ========== BRANDCHARGER PANEL ========== */
.brandcharger-panel {
    max-width: 860px;
    margin: 0 auto;
}
.brandcharger-hero-img {
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: 32px;
}
.brandcharger-hero-img img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    display: block;
}
.brandcharger-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: linear-gradient(135deg, #fffbf0, #fff3d0);
    border: 1.5px solid #e8b84b;
    border-radius: 50px;
    padding: 6px 16px;
    font-size: 12px;
    font-weight: 700;
    color: #c9963a;
    margin-bottom: 16px;
    letter-spacing: 0.03em;
}
.brandcharger-badge svg {
    width: 12px; height: 12px;
    fill: #e8b84b; stroke: none; flex-shrink: 0;
}
.brandcharger-title {
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 12px;
    line-height: 1.3;
}
.brandcharger-title span { color: #c9963a; }
.brandcharger-desc {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.75;
    margin-bottom: 28px;
}
.brandcharger-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    text-align: left;
    margin-bottom: 28px;
}
.brandcharger-advantages {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 24px;
}
.brandcharger-advantages h4 {
    font-size: 13px;
    font-weight: 700;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
}
.brandcharger-advantages ul {
    list-style: none;
    padding: 0; margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.brandcharger-advantages li {
    display: grid;
    grid-template-columns: 20px 1fr;
    align-items: start;
    gap: 10px;
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.6;
}
.brandcharger-advantages li .bc-check {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px; height: 20px; min-width: 20px;
    border-radius: 50%;
    background: rgba(201,150,58,0.12);
    margin-top: 2px;
}
.brandcharger-advantages li .bc-check svg {
    width: 11px; height: 11px;
    stroke: #c9963a; fill: none;
}
.brandcharger-variants {
    background: linear-gradient(135deg, #fffbf0, #fff8e6);
    border: 1.5px solid #e8b84b;
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.brandcharger-variants h4 {
    font-size: 13px;
    font-weight: 700;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
}
.variant-card {
    background: #fff;
    border: 1px solid #e8b84b;
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 14px;
}
.variant-card:last-child { margin-bottom: 0; }
.variant-icon {
    width: 40px; height: 40px; min-width: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, #c9963a, #e8b84b);
    display: flex; align-items: center; justify-content: center;
    color: #fff;
    font-size: 18px;
}
.variant-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
}
.variant-volume {
    font-size: 13px;
    color: #c9963a;
    font-weight: 600;
    margin-top: 2px;
}

@media (max-width: 768px) {
    .brandcharger-content { grid-template-columns: 1fr; }
    .brandcharger-hero-img img { aspect-ratio: 4/3; }
}

/* ========== BLOCK 2: Hotline ringing button ========== */
.hotline-phone-ring-wrap { position: fixed; bottom: 0; left: 0; z-index: 999999; }
.hotline-phone-ring { position: relative; visibility: visible; background-color: transparent; width: 110px; height: 110px; cursor: pointer; z-index: 11; -webkit-backface-visibility: hidden; -webkit-transform: translateZ(0); transition: visibility .5s; left: 0; bottom: 0; display: block; }
.hotline-phone-ring-circle { width: 85px; height: 85px; top: 10px; left: 10px; position: absolute; background-color: transparent; border-radius: 100%; border: 2px solid #e60808; transition: all .5s; transform-origin: 50% 50%; opacity: 0.5; display: none;}
.hotline-phone-ring-circle-fill { width: 55px; height: 55px; top: 25px; left: 25px; position: absolute; background-color: rgba(230,8,8,0.7); border-radius: 100%; border: 2px solid transparent; transition: all .5s; transform-origin: 50% 50%; }
.hotline-phone-ring-img-circle { background-color: #e60808; width: 33px; height: 33px; top: 36px; left: 36px; position: absolute; border-radius: 100%; border: 2px solid transparent; transform-origin: 50% 50%; display: flex; align-items: center; justify-content: center; }
.hotline-phone-ring-img-circle .pps-btn-img { display: flex; }
.hotline-phone-ring-img-circle .pps-btn-img img { width: 20px; height: 20px; }
.hotline-bar { position: absolute; background: rgba(230,8,8,0.75); height: 40px; width: 180px; line-height: 40px; border-radius: 50px; padding: 0 10px; cursor: pointer; transition: all 0.8s; z-index: 9; box-shadow: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.1); left: 33px; bottom: 37px; }
.hotline-bar > a { color: #fff; text-decoration: none; font-size: 15px; font-weight: bold; text-indent: 50px; display: block; letter-spacing: 1px; line-height: 40px; font-family: Arial; }
.hotline-bar > a:hover, .hotline-bar > a:active { color: #fff; }
@-webkit-keyframes phonering-alo-circle-anim { 0% { -webkit-transform: rotate(0) scale(0.5) skew(1deg); opacity: 0.1; } 30% { -webkit-transform: rotate(0) scale(0.7) skew(1deg); opacity: 0.5; } 100% { -webkit-transform: rotate(0) scale(1) skew(1deg); opacity: 0.1; } }
@keyframes phonering-alo-circle-anim { 0% { transform: rotate(0) scale(0.5) skew(1deg); opacity: 0.1; } 30% { transform: rotate(0) scale(0.7) skew(1deg); opacity: 0.5; } 100% { transform: rotate(0) scale(1) skew(1deg); opacity: 0.1; } }
@-webkit-keyframes phonering-alo-circle-fill-anim { 0% { -webkit-transform: rotate(0) scale(0.7) skew(1deg); opacity: 0.6; } 50% { -webkit-transform: rotate(0) scale(1) skew(1deg); opacity: 0.6; } 100% { -webkit-transform: rotate(0) scale(0.7) skew(1deg); opacity: 0.6; } }
@keyframes phonering-alo-circle-fill-anim { 0% { transform: rotate(0) scale(0.7) skew(1deg); opacity: 0.6; } 50% { transform: rotate(0) scale(1) skew(1deg); opacity: 0.6; } 100% { transform: rotate(0) scale(0.7) skew(1deg); opacity: 0.6; } }
@-webkit-keyframes phonering-alo-circle-img-anim { 0% { -webkit-transform: rotate(0) scale(1) skew(1deg); } 10% { -webkit-transform: rotate(-25deg) scale(1) skew(1deg); } 20% { -webkit-transform: rotate(25deg) scale(1) skew(1deg); } 30% { -webkit-transform: rotate(-25deg) scale(1) skew(1deg); } 40% { -webkit-transform: rotate(25deg) scale(1) skew(1deg); } 50% { -webkit-transform: rotate(0) scale(1) skew(1deg); } 100% { -webkit-transform: rotate(0) scale(1) skew(1deg); } }
@keyframes phonering-alo-circle-img-anim { 0% { transform: rotate(0) scale(1) skew(1deg); } 10% { transform: rotate(-25deg) scale(1) skew(1deg); } 20% { transform: rotate(25deg) scale(1) skew(1deg); } 30% { transform: rotate(-25deg) scale(1) skew(1deg); } 40% { transform: rotate(25deg) scale(1) skew(1deg); } 50% { transform: rotate(0) scale(1) skew(1deg); } 100% { transform: rotate(0) scale(1) skew(1deg); } }
@media (max-width: 768px) { .hotline-bar { display: none; } }
@media (min-width: 768px) { .hotline-phone-ring-wrap { display: none; } }

/* ========== BLOCK 3: Zalo button ========== */
@media only screen and (min-width: 768px) {
    .zalo_button_pc {
        position:fixed;
        width:100px;
        bottom:50px;
        left:13px;
        z-index: 99999999;
    }
}
@media only screen and (max-width: 767px) {
    .block_zalo_button_pc {
        display: none;
    }
}
@media only screen and (max-width: 767px) {
    .zalo_button {
        position:fixed;
        width:75px;
        bottom:100px;
        left:13px;
        z-index: 99999999;
    }
}
@media only screen and (min-width: 768px) {
    .block_zalo_button {
        display: none;
    }
}

/* ========== BLOCK 4: Disable text selection ========== */
body { -webkit-touch-callout: none; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; }

/* ========== PRODUCT CATALOG (coc-qua-tang) ========== */
.catalog-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 36px 0 32px; }
.catalog-tab { padding: 9px 20px; border-radius: 50px; border: 1.5px solid var(--gray-200); background: var(--white); font-size: 14px; font-weight: 600; color: var(--gray-600); cursor: pointer; transition: var(--transition); }
.catalog-tab:hover { border-color: var(--primary); color: var(--primary); }
.catalog-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.catalog-panel { display: none; }
.catalog-panel.active { display: block; }
.catalog-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 900px; margin: 0 auto; }
.catalog-grid-3 { grid-template-columns: repeat(3, 1fr); max-width: 960px; }
.catalog-grid-5 { grid-template-columns: repeat(5, 1fr); max-width: 1200px; gap: 16px; }
.catalog-item { border-radius: var(--radius-lg); overflow: hidden; background: var(--white); box-shadow: var(--shadow-sm); border: 1px solid var(--gray-200); transition: var(--transition); cursor: pointer; }
.catalog-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.catalog-item img { width: 100%; aspect-ratio: 1/1; object-fit: cover; display: block; }
.catalog-label { padding: 12px 16px; font-size: 13px; font-weight: 700; color: var(--gray-800); text-align: center; line-height: 1.4; }

/* ========== VIDEO SECTION (coc-qua-tang) ========== */
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
.video-card { border-radius: var(--radius-lg); overflow: hidden; background: var(--gray-900); box-shadow: var(--shadow-lg); cursor: pointer; position: relative; transition: var(--transition); }
.video-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); }
.video-thumb { position: relative; aspect-ratio: 16/9; }
.video-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: 0.8; transition: var(--transition); }
.video-card:hover .video-thumb img { opacity: 1; }
.video-play-btn { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.video-play-btn span { width: 56px; height: 56px; background: rgba(242,101,34,0.9); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.video-play-btn span svg { width: 22px; height: 22px; color: #fff; margin-left: 3px; }
.video-card:hover .video-play-btn span { background: var(--primary); transform: scale(1.1); }
.video-info { padding: 16px 20px; }
.video-info h4 { font-size: 14px; font-weight: 700; color: var(--white); line-height: 1.4; text-align: center; }

/* ========== VIDEO MODAL (coc-qua-tang) ========== */
.video-modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.9); z-index: 99999; align-items: center; justify-content: center; }
.video-modal-overlay.open { display: flex; }
.video-modal { position: relative; width: 90%; max-width: 900px; }
.video-modal-close { position: absolute; top: -44px; right: 0; background: none; border: none; color: #fff; font-size: 36px; cursor: pointer; line-height: 1; padding: 4px 8px; opacity: 0.8; transition: 0.2s; }
.video-modal-close:hover { opacity: 1; }
.video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; border-radius: var(--radius); overflow: hidden; }
.video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; }

/* ========== 3A TEAM SECTION (coc-qua-tang) ========== */
.team-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 48px; }
.team-card { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); position: relative; }
.team-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; display: block; transition: var(--transition); }
.team-card:hover img { transform: scale(1.04); }
.team-card-label { position: absolute; bottom: 0; left: 0; right: 0; padding: 16px 20px; background: linear-gradient(to top, rgba(0,0,0,0.75), transparent); color: #fff; font-size: 14px; font-weight: 700; }
.team-grid-3 { grid-template-columns: repeat(3, 1fr); }

/* ========== ABOUT SECTION – redesign (coc-qua-tang) ========== */

/* Video + stats strip */
.about-video-block {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 32px;
    align-items: stretch;
    margin: 40px 0 48px;
}
.about-video-player .video-card { margin: 0; }
.about-video-player .video-thumb { aspect-ratio: 16/9; }
.about-video-player .video-thumb img { height: 100%; aspect-ratio: unset; }

.about-key-stats {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.about-stat {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 16px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.about-stat-num {
    font-size: 28px;
    font-weight: 900;
    color: var(--primary);
    line-height: 1.1;
    margin-bottom: 4px;
}
.about-stat-label {
    font-size: 12px;
    color: rgba(255,255,255,0.55);
    line-height: 1.4;
}
.about-stat-ppai { border-color: rgba(242,101,34,0.3); background: rgba(242,101,34,0.07); }
.about-stat-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 800;
    color: var(--primary-light);
    margin-bottom: 4px;
}

/* Story: text + image */
.about-story {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
    margin-bottom: 48px;
}
.about-story-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    position: relative;
}
.about-story-img img {
    width: 100%;
    aspect-ratio: 800/470;
    object-fit: cover;
    display: block;
}
.about-story-img-label {
    display: none;
}
.about-story-text h3 {
    font-size: 22px;
    font-weight: 800;
    color: var(--white);
    line-height: 1.35;
    margin-bottom: 16px;
}
.about-story-text p {
    font-size: 14px;
    color: rgba(255,255,255,0.65);
    line-height: 1.85;
    margin-bottom: 14px;
}
.about-story-text p:last-of-type { margin-bottom: 20px; }
.about-story-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.about-story-tags span {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(242,101,34,0.12);
    border: 1px solid rgba(242,101,34,0.25);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-light);
}

/* 4 photos grid */
.about-photos {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.about-photo-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-lg);
}
.about-photo-card img {
    width: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}
.about-photo-card:hover img { transform: scale(1.03); }
.about-photo-label {
    display: none;
}

@media (max-width: 768px) {
    .about-video-block { grid-template-columns: 1fr; }
    .about-key-stats { flex-direction: row; flex-wrap: wrap; }
    .about-key-stats .about-stat { flex: 1 1 calc(50% - 6px); min-width: 120px; }
    .about-story { grid-template-columns: 1fr; gap: 28px; }
    .about-photos { grid-template-columns: 1fr; }
}

/* ========== VIDEO GRID 2-COL (coc-qua-tang) ========== */
.video-grid-2 { grid-template-columns: repeat(2, 1fr); max-width: 860px; margin-left: auto; margin-right: auto; }

/* ========== ABOUT SECTION (coc-qua-tang) ========== */
.about-video-wrap { max-width: 700px; margin: 40px auto 48px; }
.about-intro {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 48px;
    align-items: start;
    margin-top: 16px;
}
.about-intro-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.about-intro-img img { width: 100%; aspect-ratio: 800/470; object-fit: cover; display: block; }
.about-intro-text { text-align: left; }
.about-intro-text p { font-size: 15px; color: var(--gray-600); line-height: 1.85; margin-bottom: 16px; }
.about-intro-text p:last-child { margin-bottom: 0; }

/* ========== MOBILE additions (coc-qua-tang) ========== */
@media (max-width: 768px) {
    .catalog-grid { grid-template-columns: repeat(2, 1fr); }
    .catalog-grid-3 { grid-template-columns: repeat(2, 1fr); }
    .catalog-grid-5 { grid-template-columns: repeat(3, 1fr) !important; }
    .video-grid { grid-template-columns: 1fr; }
    .video-grid-2 { grid-template-columns: 1fr; }
    .team-grid { grid-template-columns: 1fr; }
    .team-grid-3 { grid-template-columns: repeat(2, 1fr); }
    .about-intro { grid-template-columns: 1fr; gap: 28px; }
}

/* ========== IMAGE POPUP GALLERY (global) ========== */
[class*="catalog-panel"] img { cursor: pointer; transition: opacity 0.3s; }
[class*="catalog-panel"] img:hover { opacity: 0.85; }
.img-popup-overlay {
    display: none; position: fixed; inset: 0; z-index: 9999;
    background: rgba(0,0,0,0.85); align-items: center; justify-content: center;
}
.img-popup-frame { position: relative; display: inline-flex; }
.img-popup-img {
    width: 500px; height: 500px; object-fit: contain;
    border-radius: 12px; background: #fff; display: block;
}
.img-popup-watermark {
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    max-width: 60%; max-height: 60%;
    opacity: 0.2; pointer-events: none;
}
.img-popup-close {
    position: absolute; top: -16px; right: -16px;
    background: rgba(0,0,0,0.6); border: none; color: #fff;
    font-size: 24px; line-height: 1; cursor: pointer; opacity: 0.9;
    width: 32px; height: 32px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}
.img-popup-close:hover { opacity: 1; }
@media (max-width: 600px) {
    .img-popup-img { width: calc(100vw - 48px); height: calc(100vw - 48px); }
}

/* ===== UTILITY: RESPONSIVE VISIBILITY ===== */
@media (max-width: 768px) {
    .hide-mobile { display: none !important; }
}

/* ===== UTILITY: TEXT COLOR ===== */
.text-primary { color: var(--primary); }
.section-dark .section-label,
.cta-section .section-label { color: var(--primary-light); }

/* ===== HERO BADGE SVG SIZE ===== */
.hero-badge svg { width: 16px; height: 16px; flex-shrink: 0; }

/* ===== TRUST BAR ===== */
.trust-bar { background: var(--white); border-bottom: 1px solid var(--gray-200); padding: 32px 0; }
.trust-items { display: flex; align-items: center; justify-content: center; gap: 48px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--gray-500); font-weight: 500; }
.trust-item svg { width: 20px; height: 20px; color: var(--primary); flex-shrink: 0; }

/* ===== SERVICES (qua-tang-doanh-nghiep) ===== */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius); padding: 36px 28px; text-align: center; transition: var(--transition); }
.service-card:hover { background: rgba(242,101,34,0.1); border-color: rgba(242,101,34,0.3); transform: translateY(-6px); }
.service-icon { width: 72px; height: 72px; margin: 0 auto 20px; background: rgba(242,101,34,0.12); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 32px; transition: var(--transition); }
.service-card:hover .service-icon { background: var(--primary); transform: scale(1.05); }
.service-card h3 { font-size: 16px; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.service-card p { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.6; }

/* ===== WHY OVERRIDES (qua-tang-doanh-nghiep) ===== */
.why-number-xl { font-size: 64px; }
.why-card-lift:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); border-color: transparent; }
.why-card-lift:hover .why-number { color: var(--primary-bg); }

/* ===== PROJECTS (qua-tang-doanh-nghiep) ===== */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.project-card { border-radius: var(--radius-lg); overflow: hidden; background: var(--white); box-shadow: var(--shadow-sm); border: 1px solid var(--gray-200); transition: var(--transition); }
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); }
.project-image { aspect-ratio: 16/10; background: linear-gradient(135deg, var(--gray-100), var(--gray-200)); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.project-image img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.project-card:hover .project-image img { transform: scale(1.05); }
.project-image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.4), transparent); opacity: 0; transition: var(--transition); }
.project-card:hover .project-image::after { opacity: 1; }
.project-body { padding: 24px; }
.project-client { font-size: 12px; font-weight: 600; color: var(--primary); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 6px; }
.project-body h3 { font-size: 16px; font-weight: 700; color: var(--gray-900); margin-bottom: 6px; }
.project-body p { font-size: 13px; color: var(--gray-500); }

/* ===== TESTIMONIAL EXTRAS (qua-tang-doanh-nghiep) ===== */
.testimonial-quote { font-size: 40px; color: var(--primary); line-height: 1; margin-bottom: 12px; opacity: 0.3; }
.testimonial-avatar { width: 48px; height: 48px; border-radius: 50%; background: var(--primary-bg); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--primary); font-size: 16px; }
.testimonial-name { font-size: 14px; font-weight: 700; color: var(--gray-900); }
.testimonial-role { font-size: 12px; color: var(--gray-400); }

/* ===== TESTIMONIAL VIDEO CARD (qua-tang-doanh-nghiep) ===== */
.testimonial-card-video { background: #fff; border-radius: 16px; border: 1px solid var(--gray-200); box-shadow: 0 4px 20px rgba(0,0,0,0.07); overflow: hidden; display: flex; flex-direction: column; transition: transform 0.2s, box-shadow 0.2s; }
.testimonial-card-video:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.12); }
.tcv-video { position: relative; aspect-ratio: 16/9; cursor: pointer; overflow: hidden; flex-shrink: 0; }
.tcv-video img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.3s; }
.testimonial-card-video:hover .tcv-video img { transform: scale(1.03); }
.tcv-play { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,0.28); transition: background 0.2s; }
.tcv-play:hover { background: rgba(0,0,0,0.45); }
.tcv-play span { width: 56px; height: 56px; background: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 24px rgba(242,101,34,0.5); transition: transform 0.2s; }
.testimonial-card-video:hover .tcv-play span { transform: scale(1.1); }
.tcv-play svg { width: 26px; height: 26px; fill: #fff; margin-left: 3px; }
.tcv-body { padding: 20px 24px 24px; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.tcv-stars { color: #f59e0b; font-size: 15px; letter-spacing: 1px; }
.tcv-text { font-size: 0.88rem; color: var(--gray-600); line-height: 1.7; font-style: italic; position: relative; padding-left: 18px; }
.tcv-text::before { content: '\201C'; position: absolute; left: 0; top: -4px; font-size: 32px; color: var(--primary); opacity: 0.25; line-height: 1; font-style: normal; }
.tcv-author { display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--gray-100); padding-top: 14px; margin-top: auto; }
.tcv-avatar { width: 42px; height: 42px; border-radius: 50%; background: var(--primary-bg); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--primary); font-size: 14px; flex-shrink: 0; }
.tcv-name { font-size: 13px; font-weight: 700; color: var(--gray-900); }
.tcv-role { font-size: 11px; color: var(--gray-400); margin-top: 2px; }
.tcv-modal { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.92); z-index: 9999; align-items: center; justify-content: center; padding: 24px; }
.tcv-modal.active { display: flex; }
.tcv-modal-inner { position: relative; width: 100%; max-width: 860px; }
.tcv-modal-inner iframe { width: 100%; aspect-ratio: 16/9; border: none; border-radius: 12px; }
.tcv-modal-close { position: absolute; top: -44px; right: 0; background: none; border: none; color: #fff; font-size: 2rem; cursor: pointer; line-height: 1; opacity: 0.8; }
.tcv-modal-close:hover { opacity: 1; }

/* ===== CATALOG GRID VARIANTS (qua-tang-doanh-nghiep) ===== */
.catalog-grid-banner { grid-template-columns: 1fr; max-width: 900px; gap: 16px; }
.catalog-grid-banner .catalog-item img { aspect-ratio: 1200/628; object-fit: cover; display: block; }
.catalog-grid-single { grid-template-columns: 1fr; max-width: 760px; }
.catalog-grid-giftset { grid-template-columns: repeat(3, 1fr); max-width: 860px; }
.catalog-grid-giftset .catalog-item img { aspect-ratio: 1/1; }
.catalog-item-nolabel img { display: block; }

/* ===== VIDEO TRIGGER BUTTON ===== */
.video-trigger-btn { display: inline-flex; align-items: center; gap: 10px; margin: 8px 0 20px; padding: 12px 24px; background: rgba(242,101,34,0.1); border: 1.5px solid var(--primary); border-radius: 50px; color: var(--primary); font-size: 14px; font-weight: 700; cursor: pointer; transition: var(--transition); }
.video-trigger-btn:hover { background: var(--primary); color: #fff; }
.video-trigger-btn svg { flex-shrink: 0; }

/* ===== CATALOG + VIDEO LAYOUT (shared) ===== */
.catalog-with-video { display: grid; grid-template-columns: 1fr 280px; gap: 28px; align-items: start; max-width: 1260px; margin: 0 auto; text-align: left; }
.catalog-video-sticky { position: sticky; top: 88px; }
.catalog-video-wrap { position: relative; width: 100%; aspect-ratio: 9/16; border-radius: 16px; overflow: hidden; border: 1px solid #e2e6ea; background: #000; }
.catalog-video-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.catalog-video-caption { margin-top: 10px; font-size: 12px; color: var(--gray-500); text-align: center; line-height: 1.5; }

/* ===== CATALOG + VIDEO LAYOUT (qua-tang-doanh-nghiep — keep for backward compat) ===== */
.qtdn-catalog-with-video { display: grid; grid-template-columns: 1fr 280px; gap: 28px; align-items: start; max-width: 1260px; margin: 0 auto; text-align: left; }
.qtdn-video-sticky { position: sticky; top: 88px; }
.qtdn-video-wrap { position: relative; width: 100%; aspect-ratio: 9/16; border-radius: 16px; overflow: hidden; border: 1px solid #e2e6ea; background: #000; }
.qtdn-video-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.qtdn-video-caption { margin-top: 10px; font-size: 12px; color: var(--gray-500); text-align: center; line-height: 1.5; }

/* ===== PRODUCTION GALLERY (shared) ===== */
.production-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 40px; }
.production-item { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-200); }
.production-item img { width: 100%; aspect-ratio: 1/1; object-fit: cover; display: block; transition: transform 0.4s ease; }
.production-item:hover img { transform: scale(1.05); }

/* ===== SECTION SUBTITLE FLUSH ===== */
.section-subtitle-flush { margin-bottom: 0; }

/* ===== RESPONSIVE (qua-tang-doanh-nghiep) ===== */
@media (max-width: 1024px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .catalog-with-video { grid-template-columns: 1fr; }
    .catalog-video-sticky { display: none; }
    .qtdn-catalog-with-video { grid-template-columns: 1fr; }
    .qtdn-video-sticky { display: none; }
    .production-grid { grid-template-columns: repeat(2, 1fr); }
    .services-grid { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
    .catalog-grid-giftset { grid-template-columns: repeat(2, 1fr); }
    .trust-items { gap: 20px; }
}
@media (max-width: 480px) {
    .catalog-tab { font-size: 12px; padding: 7px 14px; }
}

/* ===== VIDEO CARD – LIGHT BG (so-qua-tang và các LP cần video card nền trắng) ===== */
.video-card-light {
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 8px 28px rgba(0,0,0,0.1);
    cursor: pointer;
    background: #fff;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}
.video-card-light:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

/* Title bar dưới thumbnail của video card */
.video-card-title {
    padding: 12px 16px;
    color: var(--gray-700);
    font-size: 0.85rem;
    font-weight: 500;
    text-align: left;
    line-height: 1.4;
}

/* ===== REVIEW VIDEOS GRID (2 cột, dùng video-card-light) ===== */
.review-videos {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 40px;
}
@media (max-width: 640px) { .review-videos { grid-template-columns: 1fr; } }

/* ========== PROMO BOX (cạnh form đặt hàng) ========== */
.cta-promo-box {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-top: 28px;
}
.cta-promo-inner { display: flex; align-items: center; gap: 20px; }
.cta-promo-text { flex: 1; min-width: 0; }
.cta-promo-title { font-size: 15px; font-weight: 800; color: var(--primary-light); margin-bottom: 8px; }
.cta-promo-price { font-size: 26px; font-weight: 900; color: var(--white); margin-bottom: 12px; }
.cta-promo-old { font-size: 15px; font-weight: 400; color: rgba(255,255,255,0.4); text-decoration: line-through; margin-left: 6px; }
.cta-promo-list { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.cta-promo-list li { font-size: 13px; color: rgba(255,255,255,0.75); line-height: 1.5; }
.cta-promo-img { flex-shrink: 0; }
.cta-promo-img img { width: 100px; height: 100px; object-fit: cover; border-radius: var(--radius); }
@media (max-width: 480px) {
    .cta-promo-box { padding: 18px; }
    .cta-promo-inner { flex-direction: column; align-items: stretch; text-align: center; }
    .cta-promo-img { align-self: center; }
}

/* ========== COMBO SELECTOR (chọn combo trong product section & form đặt hàng) ========== */
.combo-selector h4 { font-size: 15px; font-weight: 800; color: var(--gray-900); margin-bottom: 12px; }
.combo-options { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
.combo-opt {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    background: var(--white); border: 1.5px solid var(--gray-200); border-radius: var(--radius);
    padding: 14px 16px; cursor: pointer; transition: var(--transition);
}
.combo-opt:hover { border-color: var(--primary); }
.combo-opt.active { border-color: var(--primary); background: var(--primary-bg); }
.combo-opt-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.combo-opt-radio {
    width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--gray-300, var(--gray-200));
    flex-shrink: 0; position: relative; transition: var(--transition);
}
.combo-opt.active .combo-opt-radio { border-color: var(--primary); }
.combo-opt.active .combo-opt-radio::after {
    content: ''; position: absolute; inset: 3px; border-radius: 50%; background: var(--primary);
}
.combo-opt-img img { display: block; }
.combo-opt-label {
    font-size: 14px; font-weight: 700; color: var(--gray-900); line-height: 1.4;
    display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
}
.combo-opt-sublabel { font-size: 12px; color: var(--gray-500); margin-top: 2px; }
.combo-opt-badge {
    display: inline-block; white-space: nowrap; flex-shrink: 0;
    background: var(--primary); color: var(--white);
    font-size: 11px; font-weight: 700; letter-spacing: 0.01em;
    padding: 3px 10px; border-radius: 50px;
}
.combo-opt-price { font-size: 16px; font-weight: 900; color: var(--primary); white-space: nowrap; flex-shrink: 0; }
@media (max-width: 480px) {
    .combo-opt-left { width: 100%; }
    .combo-opt-price { align-self: flex-end; }
}

/* ========== CHECKOUT WIDGET (form-card chứa checkout-steps + panels) ========== */
.checkout-widget { display: flex; flex-direction: column; }

/* ========== CHECKOUT (Giỏ hàng → Thông tin → Thanh toán) ========== */
.checkout-steps { display: flex; align-items: center; justify-content: center; gap: 0; margin-bottom: 32px; }
.checkout-step { display: flex; align-items: center; gap: 10px; }
.checkout-step-dot {
    width: 32px; height: 32px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 800;
    background: var(--gray-100); color: var(--gray-400);
    border: 2px solid var(--gray-100);
    transition: var(--transition); flex-shrink: 0;
}
.checkout-step-label { font-size: 14px; font-weight: 700; color: var(--gray-400); transition: var(--transition); white-space: nowrap; }
.checkout-step.active .checkout-step-dot { background: var(--primary); color: var(--white); border-color: var(--primary); }
.checkout-step.active .checkout-step-label { color: var(--primary); }
.checkout-step.done .checkout-step-dot { background: var(--primary); color: var(--white); border-color: var(--primary); }
.checkout-step.done .checkout-step-label { color: var(--gray-700); }
.checkout-step-line { width: 64px; height: 2px; background: var(--gray-200); margin: 0 12px; transition: var(--transition); }
.checkout-step-line.done { background: var(--primary); }
@media (max-width: 640px) {
    .checkout-step-label { display: none; }
    .checkout-step-line { width: 28px; margin: 0 6px; }
}
@media (max-width: 480px) {
    .combo-opt { flex-direction: column; align-items: stretch; gap: 12px; }
    .combo-opt-qty { justify-content: space-between; }
}

.checkout-panel { display: none; }
.checkout-panel.active { display: block; }

/* --- Cart step: line items --- */
.cart-header { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 800; color: var(--gray-900); margin-bottom: 20px; }
.cart-header svg { width: 22px; height: 22px; color: var(--primary); }
.cart-items { display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }
.cart-item {
    display: flex; align-items: center; gap: 16px;
    background: var(--gray-50); border-radius: var(--radius);
    padding: 16px;
}
.cart-item-img { width: 64px; height: 64px; border-radius: 10px; overflow: hidden; flex-shrink: 0; background: var(--white); }
.cart-item-img img { width: 100%; height: 100%; object-fit: cover; }
.cart-item-info { flex: 1; min-width: 0; }
.cart-item-name { font-size: 15px; font-weight: 700; color: var(--gray-900); line-height: 1.35; }
.cart-item-sub { font-size: 12px; color: var(--gray-500); margin-top: 2px; }
.cart-item-price { font-size: 15px; font-weight: 900; color: var(--primary); margin-top: 6px; }
.cart-item-qty { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.cart-qty-btn {
    width: 28px; height: 28px; border-radius: 8px; border: 1.5px solid var(--gray-200);
    background: var(--white); color: var(--gray-700); font-size: 16px; font-weight: 700;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: var(--transition); line-height: 1;
}
.cart-qty-btn:hover { border-color: var(--primary); color: var(--primary); }
.cart-qty-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.cart-qty-val { min-width: 20px; text-align: center; font-size: 14px; font-weight: 700; color: var(--gray-900); }
.cart-item-remove {
    display: flex; align-items: center; gap: 4px; font-size: 12px; color: var(--gray-400);
    background: none; border: none; cursor: pointer; margin-top: 8px; padding: 0;
    transition: var(--transition);
}
.cart-item-remove:hover { color: #DC2626; }
.cart-item-remove svg { width: 13px; height: 13px; }
.cart-empty { text-align: center; padding: 32px 16px; color: var(--gray-500); font-size: 14px; }
.cart-subtotal { display: flex; align-items: center; justify-content: space-between; padding-top: 16px; border-top: 1px solid var(--gray-200); margin-bottom: 24px; }
.cart-subtotal-label { font-size: 14px; color: var(--gray-600); }
.cart-subtotal-value { font-size: 22px; font-weight: 900; color: var(--primary); }

/* --- Combo picker feeding into the cart (bước chọn sản phẩm trước khi vào giỏ) --- */
.combo-opt-qty { display: flex; align-items: center; gap: 8px; }

/* --- Step nav buttons --- */
.checkout-nav { display: flex; gap: 12px; }
.checkout-nav .btn { flex: 1; justify-content: center; }
.btn-outline {
    background: var(--white); color: var(--gray-700); border: 1.5px solid var(--gray-200);
}
.btn-outline:hover { border-color: var(--gray-400); }

/* --- Review step --- */
.review-block { margin-bottom: 20px; }
.review-block-title { display: flex; align-items: center; justify-content: space-between; font-size: 13px; font-weight: 700; color: var(--gray-500); text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 10px; }
.review-edit-link { font-size: 12px; font-weight: 700; color: var(--primary); background: none; border: none; cursor: pointer; text-transform: none; letter-spacing: normal; }
.review-line-item { display: flex; align-items: center; justify-content: space-between; font-size: 14px; color: var(--gray-700); padding: 8px 0; border-bottom: 1px solid var(--gray-100); }
.review-line-item:last-child { border-bottom: none; }
.review-info-card { background: var(--gray-50); border-radius: var(--radius); padding: 14px 16px; font-size: 14px; color: var(--gray-700); line-height: 1.7; }
.review-info-card strong { color: var(--gray-900); }
.review-cod-note {
    display: flex; align-items: center; gap: 8px;
    background: #EFFBF4; color: #15803D; border-radius: var(--radius);
    padding: 12px 14px; font-size: 13px; font-weight: 600; margin-bottom: 20px;
}
.review-cod-note svg { width: 16px; height: 16px; flex-shrink: 0; }

/* --- Form step field error --- */
.form-input.invalid, .form-select.invalid, .form-textarea.invalid { border-color: #DC2626; }
.form-error { font-size: 12px; color: #DC2626; margin-top: 4px; display: none; }
.form-error.show { display: block; }

/* ========== BLOG / ARTICLE ========== */
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; font-size: 13px; color: var(--gray-500); padding: 18px 0; }
.breadcrumb a { color: var(--gray-500); text-decoration: none; transition: var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--gray-400); }
.breadcrumb .current { color: var(--gray-900); font-weight: 600; }

.article-header { max-width: 780px; margin: 0 auto 32px; text-align: center; }
.article-header .section-label { justify-content: center; }
.article-title { font-size: clamp(28px, 4vw, 42px); font-weight: 900; color: var(--gray-900); line-height: 1.25; margin: 12px 0 16px; }
.article-meta { display: flex; align-items: center; justify-content: center; gap: 16px; font-size: 13px; color: var(--gray-500); flex-wrap: wrap; }
.article-meta span { display: flex; align-items: center; gap: 6px; }
.article-meta svg { width: 14px; height: 14px; }

.article-cover { max-width: 900px; margin: 0 auto 40px; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.article-cover img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }

.article-body { max-width: 740px; margin: 0 auto; font-size: 16px; color: var(--gray-700); line-height: 1.9; }
.article-body h2 { font-size: 26px; font-weight: 800; color: var(--gray-900); margin: 44px 0 18px; line-height: 1.3; }
.article-body h3 { font-size: 20px; font-weight: 700; color: var(--gray-900); margin: 32px 0 14px; }
.article-body p { margin-bottom: 20px; }
.article-body ul, .article-body ol { margin: 0 0 20px; padding-left: 24px; }
.article-body li { margin-bottom: 10px; }
.article-body a { color: var(--primary); font-weight: 600; text-decoration: underline; text-decoration-color: rgba(242,101,34,0.35); text-underline-offset: 3px; }
.article-body a:hover { text-decoration-color: var(--primary); }
.article-body strong { color: var(--gray-900); }
.article-body img { width: 100%; border-radius: var(--radius); margin: 8px 0 28px; }
.article-body blockquote { border-left: 4px solid var(--primary); background: var(--primary-bg); padding: 16px 20px; border-radius: 0 var(--radius) var(--radius) 0; font-style: italic; color: var(--gray-700); margin: 0 0 28px; }

.article-cta-box { max-width: 740px; margin: 40px auto; background: linear-gradient(135deg, var(--dark) 0%, #16213E 100%); border-radius: var(--radius-lg); padding: 32px; text-align: center; }
.article-cta-box h3 { color: var(--white); font-size: 22px; font-weight: 800; margin-bottom: 10px; }
.article-cta-box p { color: rgba(255,255,255,0.7); font-size: 14px; margin-bottom: 20px; }

.toc-box { max-width: 740px; margin: 0 auto 36px; background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 20px 24px; }
.toc-box-title { font-size: 14px; font-weight: 800; color: var(--gray-900); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.03em; }
.toc-box ol { margin: 0; padding-left: 20px; }
.toc-box li { font-size: 14px; margin-bottom: 6px; }
.toc-box a { color: var(--gray-600); text-decoration: none; }
.toc-box a:hover { color: var(--primary); }

.related-posts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; max-width: 1100px; margin: 0 auto; }
.related-post-card { display: block; background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius); overflow: hidden; text-decoration: none; transition: var(--transition); }
.related-post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.related-post-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; display: block; }
.related-post-card-body { padding: 18px; }
.related-post-card-tag { font-size: 11px; font-weight: 700; color: var(--primary); text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 8px; }
.related-post-card-title { font-size: 16px; font-weight: 800; color: var(--gray-900); line-height: 1.4; margin-bottom: 8px; }
.related-post-card-excerpt { font-size: 13px; color: var(--gray-500); line-height: 1.6; }

@media (max-width: 640px) {
    .article-body { font-size: 15px; }
    .article-body h2 { font-size: 21px; margin: 32px 0 14px; }
    .article-cta-box { padding: 24px 20px; }
}

/* --- Next-post ring nav (đảm bảo đi hết toàn bộ silo theo 1 vòng) --- */
.next-post-nav {
    max-width: 740px; margin: 0 auto 40px;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    background: var(--gray-50); border: 1px solid var(--gray-200);
    border-radius: var(--radius); padding: 18px 22px;
    text-decoration: none; transition: var(--transition);
}
.next-post-nav:hover { border-color: var(--primary); background: var(--primary-bg); }
.next-post-nav-label { font-size: 12px; font-weight: 700; color: var(--gray-500); text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 4px; }
.next-post-nav-title { font-size: 16px; font-weight: 800; color: var(--gray-900); }
.next-post-nav svg { width: 20px; height: 20px; color: var(--primary); flex-shrink: 0; }
@media (max-width: 640px) {
    .next-post-nav { padding: 16px 18px; }
    .next-post-nav-title { font-size: 14px; }
}