/* ==========================================================================
   HITC Landing Page - Optimized Version 2 Design System (Soft Blue Theme)
   ========================================================================== */

/* 1. Global Reset & Theme Variables */
:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    
    --text-primary: #0f172a;
    --text-secondary: #334155; /* High contrast Slate-700 for readability */
    --text-muted: #64748b;
    --text-white: #ffffff;
    --text-white-50: rgba(255, 255, 255, 0.6);
    
    /* Soft, non-fatiguing Sky/Ocean Blue palette - Tuned using HSL for dynamic gradients */
    --color-primary: hsl(200, 95%, 45%); 
    --color-primary-hover: hsl(200, 95%, 40%);
    --color-primary-light: hsl(200, 95%, 96%);
    
    --color-secondary: hsl(215, 90%, 55%);
    --color-secondary-hover: hsl(215, 90%, 50%);
    --color-secondary-light: hsl(215, 90%, 96%);
    
    --color-accent-blue: hsl(200, 95%, 50%);
    --color-accent-purple: hsl(220, 90%, 60%);
    --color-success: #10b981;
    --color-error: #ef4444;
    
    --border-color: #e2e8f0;
    --border-color-light: #f1f5f9;
    
    --font-heading: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.1);
    --shadow-glow-blue: 0 10px 25px rgba(2, 132, 199, 0.18);
    
    --transition-fast: 0.3s cubic-bezier(0.32, 0.72, 0, 1);
    --transition-normal: 0.6s cubic-bezier(0.32, 0.72, 0, 1);
    --transition-slow: 0.9s cubic-bezier(0.32, 0.72, 0, 1);
    
    --max-width: 1200px;
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* 2. Helper Utilities & Reusable Components */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.bg-light {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--text-white);
    box-shadow: var(--shadow-glow-blue);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(2, 132, 199, 0.3);
}

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.875rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

/* Cards (Glassmorphism Light/Frosted) */
.card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.card:hover,
.card.reveal.active:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(15, 23, 42, 0.04);
    border-color: rgba(2, 132, 199, 0.2);
}

/* Typography elements */
.text-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 50px;
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(2, 132, 199, 0.15);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-tag {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-primary);
    display: block;
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 2.25rem;
    line-height: 1.25;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: -0.02em; /* Tighter letter-spacing for premium feel */
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* 3. Header Styling */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.05);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow-sm);
}

#header-consult-btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header.scrolled #header-consult-btn {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(10px);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 52px;
    width: auto;
    object-fit: contain;
    transition: var(--transition-fast);
}

.logo-img:hover {
    transform: scale(1.02);
}

.nav-list {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
    padding: 8px 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transition: var(--transition-fast);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    width: 30px;
    padding: 5px;
}

.menu-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-fast);
}

/* 4. Hero Slider Section */
.hero-slider-section {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.hero-slider-container {
    position: relative;
    width: 100%;
}

.hero-slider-track {
    display: flex;
    width: 200%;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-slide {
    width: 50%;
    flex-shrink: 0;
    position: relative;
}

/* Slide 1 Background (Fomiyun) */
.hero-slide.slide-fomiyun {
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 50%, #e0f7fa 100%);
    padding-top: calc(var(--header-height) + 30px);
    padding-bottom: 40px;
}

/* Slide 2 Background (Ecosystem Radar) */
.hero-slide.slide-radar {
    background: radial-gradient(circle at 80% 20%, rgba(2, 132, 199, 0.05) 0%, rgba(255, 255, 255, 0) 60%),
                radial-gradient(circle at 10% 80%, rgba(14, 165, 233, 0.04) 0%, rgba(255, 255, 255, 0) 50%);
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 60px;
    min-height: 88vh;
    display: flex;
    align-items: center;
}

/* Slider Controls & Navigation */
.hero-slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 25;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #7dd3fc;
    color: #0284c7;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(2, 132, 199, 0.2);
    transition: all 0.25s ease;
}

.hero-slider-arrow:hover {
    background: #0284c7;
    color: #ffffff;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 8px 25px rgba(2, 132, 199, 0.4);
}

.hero-slider-arrow.prev-slide { left: 24px; }
.hero-slider-arrow.next-slide { right: 24px; }

.hero-slider-dots {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 25;
    display: flex;
    gap: 12px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    padding: 6px 18px;
    border-radius: 30px;
    border: 1px solid #bae6fd;
    box-shadow: 0 4px 16px rgba(2, 132, 199, 0.15);
}

.slider-dot {
    display: flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 20px;
    transition: all 0.25s ease;
}

.dot-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #cbd5e1;
    transition: all 0.25s ease;
}

.dot-label {
    font-family: var(--font-heading);
    font-size: 0.775rem;
    font-weight: 700;
    color: #64748b;
    transition: all 0.25s ease;
}

.slider-dot.active {
    background: rgba(2, 132, 199, 0.1);
}

.slider-dot.active .dot-indicator {
    background: #0284c7;
    width: 20px;
    border-radius: 10px;
}

.slider-dot.active .dot-label {
    color: #0284c7;
}

/* Original Hero Features List & Radar Styles for Slide 2 */
.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: center;
}

.hero-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 3.25rem;
    line-height: 1.15;
    color: var(--text-primary);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-features-list {
    list-style: none;
    padding: 0;
    margin: 0 0 36px 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 550px;
}

.hero-features-list li {
    font-size: 1.05rem;
    line-height: 1.5;
    color: var(--text-secondary);
    position: relative;
    padding-left: 24px;
    font-weight: 500;
}

.hero-features-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-primary);
    box-shadow: 0 0 8px rgba(2, 132, 199, 0.35);
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-svg {
    width: 100%;
    max-width: 635px;
    height: auto;
    transition: var(--transition-normal);
}

/* Fomiyun Light Sky Blue Discount Style */
.fomiyun-hero-banner {
    position: relative;
    min-height: 88vh;
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 50px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 50%, #e0f7fa 100%) !important;
    overflow: hidden;
}

.fomiyun-hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(rgba(2, 132, 199, 0.12) 1.2px, transparent 1.2px);
    background-size: 28px 28px;
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 24px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title-main {
    font-family: var(--font-heading);
    font-style: italic;
    font-weight: 900;
    font-size: 2.85rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
    line-height: 1.1;
}

.text-cyan-bold {
    color: var(--color-primary);
}

.discount-row {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
    position: relative;
}

.pill-badge-left {
    background: linear-gradient(135deg, #0284c7, #0369a1);
    color: #ffffff;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 800;
    padding: 8px 18px;
    border-radius: 30px;
    text-transform: uppercase;
    box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
    white-space: nowrap;
}

.giant-percent-num {
    font-family: var(--font-heading);
    font-style: italic;
    font-weight: 900;
    font-size: 5.75rem;
    line-height: 0.9;
    color: #0284c7;
    text-shadow: 0 4px 20px rgba(2, 132, 199, 0.25);
    letter-spacing: -0.04em;
}

.pill-badge-right {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    color: #ffffff;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 800;
    padding: 6px 14px;
    border-radius: 20px;
    text-transform: uppercase;
    box-shadow: 0 4px 10px rgba(14, 165, 233, 0.3);
    white-space: nowrap;
}

.subtitle-divider {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 0.95rem;
    color: #0284c7;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.subtitle-divider::before, .subtitle-divider::after {
    content: '';
    height: 2px;
    width: 60px;
    background: linear-gradient(90deg, transparent, #0284c7, transparent);
}

.features-4col {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 36px;
}

.feat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feat-icon-circle {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid #7dd3fc;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    margin-bottom: 8px;
    box-shadow: 0 4px 12px rgba(2, 132, 199, 0.12);
}

.feat-name {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 0.825rem;
    color: var(--text-primary);
    text-transform: uppercase;
    line-height: 1.2;
}

.feat-sub {
    font-size: 0.75rem;
    color: #475569;
    margin-top: 2px;
}

.bottom-action-row {
    display: flex;
    align-items: center;
    gap: 24px;
}

.btn-register-glow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(90deg, #0284c7 0%, #06b6d4 100%);
    color: #ffffff;
    padding: 16px 36px;
    border-radius: 40px;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.05rem;
    text-decoration: none;
    text-transform: uppercase;
    box-shadow: 0 8px 24px rgba(2, 132, 199, 0.4);
    transition: all 0.3s ease;
}

.btn-register-glow:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(6, 182, 212, 0.6);
}

.promo-date-card {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid #7dd3fc;
    padding: 10px 18px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(2, 132, 199, 0.1);
}

.date-icon {
    width: 32px;
    height: 32px;
    background: rgba(2, 132, 199, 0.12);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.date-text-lbl {
    font-size: 0.725rem;
    color: #64748b;
    text-transform: uppercase;
    font-weight: 700;
}

.date-text-val {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.05rem;
    color: var(--color-primary);
    line-height: 1.1;
}

.hero-visual-podium {
    position: relative;
    width: 100%;
    height: 460px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.podium-base {
    position: absolute;
    bottom: 30px;
    width: 380px;
    height: 140px;
    background: radial-gradient(ellipse at center, rgba(56, 189, 248, 0.8) 0%, rgba(2, 132, 199, 0.9) 60%, rgba(15, 23, 42, 0.95) 100%);
    border-radius: 50%;
    box-shadow: 0 0 50px rgba(56, 189, 248, 0.8), inset 0 0 20px rgba(255, 255, 255, 0.6);
    border: 3px solid #7dd3fc;
    transform: rotateX(60deg);
}

.server-rack-group {
    position: relative;
    z-index: 5;
    display: flex;
    align-items: flex-end;
    gap: 10px;
    margin-bottom: 40px;
}

.server-cabinet {
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    border: 2px solid #0284c7;
    border-radius: 12px;
    padding: 12px 10px;
    box-shadow: 0 15px 35px rgba(15, 23, 42, 0.6), 0 0 20px rgba(2, 132, 199, 0.4);
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
}

.cab-main { width: 110px; height: 210px; }
.cab-side { width: 90px; height: 180px; opacity: 0.9; }

.server-slot {
    height: 22px;
    background: #090d16;
    border-radius: 4px;
    border: 1px solid rgba(56, 189, 248, 0.3);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 6px;
}

.slot-leds { display: flex; gap: 4px; }

.led {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background-color: #38bdf8;
    box-shadow: 0 0 6px #38bdf8;
}

.cloud-logo-top {
    position: absolute;
    top: 12px;
    z-index: 10;
    background: #ffffff;
    padding: 8px 26px;
    border-radius: 50px;
    border: 1.5px solid #e0f2fe;
    box-shadow: 0 10px 25px rgba(2, 132, 199, 0.2), 0 2px 8px rgba(0, 0, 0, 0.04);
    display: flex;
    align-items: center;
    justify-content: center;
}

.hitc-podium-logo {
    height: 44px;
    width: auto;
    object-fit: contain;
    display: block;
}

.floating-badge-card {
    position: absolute;
    z-index: 15;
    background: #ffffff;
    border-radius: 14px;
    padding: 10px 16px;
    box-shadow: 0 10px 25px rgba(2, 132, 199, 0.2), 0 2px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e0f2fe;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-width: 140px;
    animation: floatUpDown 4s ease-in-out infinite;
}

.badge-top-left { top: 30px; left: 10px; animation-delay: 0s; }
.badge-top-right { top: 30px; right: 10px; animation-delay: 1s; }
.badge-bot-left { bottom: 50px; left: 10px; animation-delay: 2s; }
.badge-bot-right { bottom: 50px; right: 10px; animation-delay: 3s; }

.badge-icon {
    width: 32px;
    height: 32px;
    background: rgba(2, 132, 199, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.badge-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 0.75rem;
    color: var(--text-primary);
    text-transform: uppercase;
    line-height: 1.2;
}

/* BOTTOM FEATURE PILL BAR (Raised Position) */
.hero-bottom-pill-bar {
    margin-top: 0px;
    background: linear-gradient(90deg, #0284c7 0%, #0369a1 100%);
    border-radius: 50px;
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 10px 25px rgba(2, 132, 199, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.25);
    position: relative;
    z-index: 10;
}

.pill-bar-item {
    display: flex;
    align-items: center;
    gap: 14px;
    color: #ffffff;
    flex: 1;
    justify-content: center;
}

.pill-icon {
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.pill-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.25;
    color: #ffffff;
}

.pill-sub {
    font-size: 0.775rem;
    color: #e0f2fe;
    margin-top: 2px;
    font-weight: 500;
}

.pill-bar-divider {
    width: 1px;
    height: 38px;
    background: rgba(255, 255, 255, 0.25);
    margin: 0 12px;
}

/* SVG Animations */
.spin-slow {
    transform-origin: 250px 250px;
    animation: rotate 60s linear infinite;
}

@keyframes rotate {
    100% { transform: rotate(360deg); }
}

.float-node {
    animation: float 4s ease-in-out infinite;
}

.float-node-delayed {
    animation: float 4s ease-in-out infinite;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* 5. About & Statistics Section */
.about {
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: -15%;
    left: -10%;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(2, 132, 199, 0.1) 0%, transparent 70%);
    filter: blur(100px);
    pointer-events: none;
}

.about::after {
    content: '';
    position: absolute;
    bottom: -15%;
    right: -10%;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(2, 132, 199, 0.06) 0%, transparent 70%);
    filter: blur(100px);
    pointer-events: none;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-bottom: 60px;
}

.about-card {
    padding: 40px;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--text-white);
    transition: var(--transition-normal);
}

.icon-blue {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    box-shadow: 0 6px 15px rgba(2, 132, 199, 0.2);
}

.about-card:hover .card-icon {
    transform: scale(1.08);
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.card-text {
    color: var(--text-secondary);
}

/* Statistics Bar */
.stats-bar {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 48px 24px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    border-top: 2px solid transparent;
    background-image: linear-gradient(var(--bg-secondary), var(--bg-secondary)), 
                      linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    background-origin: border-box;
    background-clip: padding-box, border-box;
}

.stat-item {
    text-align: center;
    flex: 1;
}

.stat-num {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 2.75rem;
    line-height: 1;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 12px;
}

.stat-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-divider {
    width: 1px;
    height: 60px;
    background-color: var(--border-color);
}

/* 6. Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

/* Double-Bezel Outer Enclosure (Shell) */
.service-card-wrapper {
    padding: 8px; /* Khoảng cách để viền lồng viền */
    background: rgba(2, 132, 199, 0.04); /* Nền mờ nhạt định hình */
    border: 1px solid rgba(2, 132, 199, 0.08); /* Viền ngoài mỏng tinh tế */
    border-radius: 28px; /* Bo góc ngoài rộng */
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    height: 100%;
    box-sizing: border-box;
}

.service-card-wrapper:hover {
    transform: translateY(-4px); /* Hiệu ứng bay lên */
    border-color: rgba(2, 132, 199, 0.2);
    background: rgba(2, 132, 199, 0.06);
    box-shadow: var(--shadow-md);
}

/* Double-Bezel Inner Enclosure (Core) */
.service-card {
    padding: 32px 32px 36px; /* Padding lõi bên trong */
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.6); /* Viền nổi bên trong */
    border-radius: 20px; /* Bán kính đồng tâm: 28px - 8px = 20px */
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.8);
    display: flex;
    flex-direction: column;
    height: 100%;
    flex: 1;
    box-sizing: border-box;
    transition: var(--transition-normal);
}

.service-card-wrapper:hover .service-card {
    background: #ffffff;
    border-color: rgba(2, 132, 199, 0.15);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.03);
}

/* Các box ảo để tự động cân bằng các phần của card dịch vụ */
.box-title {
    min-height: 140px; /* Đồng nhất chiều cao logo + tiêu đề */
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* Căn chữ dính vào mép trên */
    align-items: flex-start;
    margin-bottom: 20px;
    box-sizing: border-box;
}

.box-desc {
    min-height: 120px; /* Đồng nhất chiều cao mô tả */
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* Căn chữ dính vào mép trên */
    align-items: flex-start;
    margin-bottom: 20px;
    box-sizing: border-box;
}

.box-features {
    min-height: 240px; /* Đồng nhất chiều cao danh sách tính năng */
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* Căn dính sát mép trên */
    margin-bottom: 24px;
    box-sizing: border-box;
}

/* Optimized Logo Box Wrapper - Frosted Glass Container */
.service-logo-box {
    width: 60px;
    height: 60px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    margin-bottom: 16px; /* Giảm nhẹ để dồn không gian cho tiêu đề */
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

.service-card-wrapper:hover .service-logo-box {
    border-color: rgba(2, 132, 199, 0.3);
    box-shadow: 0 6px 16px rgba(2, 132, 199, 0.12);
    transform: translateY(-4px);
}

.service-logo {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.service-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem; /* Cân đối hơn */
    line-height: 1.35;
    color: var(--text-primary);
    margin: 0;
    text-align: left;
}

.service-desc {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.55;
    text-align: left;
}

.service-features {
    border-top: 1px solid var(--border-color-light);
    padding-top: 20px;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    list-style: none;
    padding-left: 0;
    width: 100%;
}

.service-features li {
    font-size: 0.925rem;
    color: var(--text-secondary);
    position: relative;
    padding-left: 20px;
    line-height: 1.45;
    text-align: left;
}

.service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-primary);
}

.service-card-wrapper:nth-child(even) .service-features li::before {
    background-color: var(--color-secondary);
}

/* Button-in-Button Pill CTA Design */
.service-consult-btn {
    margin-top: auto; /* Tự động đẩy xuống sát đáy card */
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 6px 6px 24px; /* Padding phải hẹp để ôm sát nút tròn */
    border-radius: 50px; /* Dạng viên thuốc tròn hoàn toàn */
    box-sizing: border-box;
}

.service-consult-btn:active {
    transform: scale(0.98); /* Hiệu ứng nhấn đàn hồi */
}

.btn-icon-circle {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 12px;
    flex-shrink: 0;
    transition: var(--transition-fast);
}

.btn-icon-circle svg {
    transition: var(--transition-normal);
}

.service-consult-btn:hover .btn-icon-circle {
    background-color: var(--color-primary);
    color: var(--text-white);
}

.service-consult-btn:hover .btn-icon-circle svg {
    transform: translate(2px, -2px) scale(1.1); /* Chuyển động hướng lên góc của mũi tên */
}

/* 16. Dynamic CRO Hints (NEW in F5) */
.service-hint {
    background-color: rgba(2, 132, 199, 0.08);
    border-left: 4px solid var(--color-primary);
    color: var(--color-primary);
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 0.925rem;
    font-weight: 600;
    animation: fadeInHint 0.3s ease;
}

@keyframes fadeInHint {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cta-friction-hint {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 12px;
    text-align: left;
}

.contact-form-box .cta-friction-hint {
    text-align: center;
}

/* Promo Privilege Card in Contact Form (Option A) */
.promo-privilege-card {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border: 1.5px solid #fde68a;
    border-radius: 12px;
    padding: 10px 18px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.08);
}

.promo-privilege-icon {
    background: #ea580c;
    color: #ffffff;
    width: 34px;
    height: 34px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(234, 88, 12, 0.25);
}

.promo-privilege-text {
    font-size: 0.95rem;
    color: #78350f;
    line-height: 1.4;
    font-weight: 600;
}

.promo-privilege-text strong {
    color: #c2410c;
    font-weight: 800;
}

/* 7. Why Choose Us Section */
.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.why-card {
    position: relative;
    padding: 40px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: var(--transition-normal);
}

.why-card:hover,
.why-card.reveal.active:hover {
    transform: translateY(-4px);
    border-color: rgba(2, 132, 199, 0.3);
    box-shadow: 0 10px 30px rgba(2, 132, 199, 0.08);
}

.why-number {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 3.75rem;
    line-height: 1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0.9;
    transition: var(--transition-normal);
}

.why-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.35rem;
    margin-bottom: 16px;
}

.why-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 8. Contact Section */
.contact-container {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 60px;
    align-items: start;
}

.contact-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 28px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon-box {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.contact-icon-box svg {
    display: block;
    stroke: var(--color-primary) !important;
    fill: none !important;
}

.contact-zalo-icon {
    display: block;
    stroke: var(--color-primary) !important;
    fill: none !important;
}

.contact-item h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.contact-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.contact-item a:hover {
    color: var(--color-primary);
}

/* Contact Form */
.contact-form-box {
    padding: 36px 32px;
    background-color: var(--bg-secondary);
}

.form-title {
    font-family: var(--font-heading);
    font-size: 1.55rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
}

.form-row-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
    position: relative;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.required {
    color: var(--color-error);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: var(--bg-secondary);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
    padding-right: 40px;
}

textarea.form-control {
    resize: vertical;
}

/* Error States */
.form-group.has-error .form-control {
    border-color: var(--color-error);
    background-color: rgba(239, 68, 68, 0.02);
}

.error-msg {
    display: none;
    font-size: 0.8rem;
    color: var(--color-error);
    margin-top: 6px;
}

.form-group.has-error .error-msg {
    display: block;
}

/* Form Success State */
.form-success-alert {
    display: none;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background-color: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 12px;
    margin-top: 24px;
}

.success-icon {
    color: var(--color-success);
    flex-shrink: 0;
    margin-top: 2px;
}

.form-success-alert h4 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 4px;
}

.form-success-alert p {
    color: var(--text-secondary);
    font-size: 0.925rem;
    line-height: 1.5;
}

/* 9. Footer Section */
.footer {
    background-color: #0b1329;
    color: #e2e8f0;
    padding: 80px 0 0;
    border-top: 1px solid #1e293b;
}

.footer-container {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 0.8fr 1.2fr;
    gap: 40px;
    padding-bottom: 60px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    color: #94a3b8;
    font-size: 0.95rem;
    line-height: 1.45;
}

.footer-contact-item a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-contact-item a:hover {
    color: var(--text-white);
}

.footer-contact-icon {
    color: #38bdf8;
    flex-shrink: 0;
    margin-top: 3px;
}

.footer-brand .logo {
    margin-bottom: 24px;
    display: inline-block;
}

.footer-logo-img {
    height: 48px;
    filter: brightness(0) invert(1);
}

.text-white {
    color: var(--text-white) !important;
}

.text-white-50 {
    color: var(--text-white-50) !important;
}

.footer-desc {
    color: #94a3b8;
    font-size: 0.95rem;
    line-height: 1.6;
    max-width: 320px;
}

.footer h4 {
    font-family: var(--font-heading);
    color: var(--text-white);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 24px;
    position: relative;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: #94a3b8;
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--text-white);
    padding-left: 4px;
}

.footer-contact-info p {
    color: #94a3b8;
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.footer-contact-info a:hover {
    color: var(--text-white);
}

.footer-bottom {
    border-top: 1px solid #1e293b;
    padding: 24px 0;
    background-color: #070d19;
}

.footer-bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #64748b;
    font-size: 0.875rem;
}

.footer-socials {
    display: flex;
    gap: 16px;
}

.footer-socials a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: #1e293b;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    transition: var(--transition-fast);
}

.footer-socials a:hover {
    background-color: var(--color-primary);
    color: var(--text-white);
    transform: translateY(-2px);
}

/* 10. Scroll Animations (Scroll Reveal) */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* 11. Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 160px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--text-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(2, 132, 199, 0.25);
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(2, 132, 199, 0.4);
}



/* 13. Popup Modal Form */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 2000;
    padding: 20px;
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    width: 100%;
    max-width: 480px;
    padding: 40px;
    position: relative;
    transform: translateY(-20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(255, 255, 255, 0.95);
}

.modal-overlay.open .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition-fast);
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--text-primary);
    transform: rotate(90deg);
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.modal-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* 14. Responsive Styles (Media Queries) */

@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.75rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-bar {
        flex-wrap: wrap;
        gap: 32px;
    }
    
    .stat-item {
        flex: 1 1 40%;
    }
    
    .stat-divider {
        display: none;
    }
    
    .why-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .contact-container {
        gap: 40px;
    }
}



/* ==========================================
   18. FAQ Accordion Section (Objection Handling)
   ========================================== */
.faq-grid {
    max-width: 850px;
    margin: 40px auto 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item:hover {
    border-color: rgba(2, 132, 199, 0.25);
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.02);
}

.faq-item.active {
    border-color: var(--color-primary);
    border-left: 4px solid var(--color-primary);
    background: linear-gradient(to right, rgba(2, 132, 199, 0.02) 0%, var(--bg-secondary) 100%);
    box-shadow: 0 10px 20px rgba(2, 132, 199, 0.04);
}

.faq-header {
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    gap: 20px;
    user-select: none;
}

.faq-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    transition: color var(--transition-fast);
}

.faq-item:hover .faq-title {
    color: var(--color-primary);
}

.faq-item.active .faq-title {
    color: var(--color-primary);
}

.faq-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--text-white);
    transform: rotate(180deg);
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.32, 0.72, 0, 1);
    padding: 0 24px;
}

.faq-item.active .faq-content {
    max-height: 350px;
    opacity: 1;
    padding-bottom: 24px;
}

.faq-content p {
    color: var(--text-secondary);
    font-size: 0.975rem;
    line-height: 1.6;
    margin: 0;
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .menu-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--bg-secondary);
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.05);
        padding: 40px 24px;
        transition: var(--transition-normal);
        border-top: 1px solid var(--border-color);
        z-index: 999;
    }

    .nav.open {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 24px;
        align-items: center;
    }

    .nav-link {
        font-size: 1.15rem;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .about-grid, .services-grid, .contact-container {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .about-card, .service-card, .contact-form-box {
        padding: 32px;
    }

    .form-row-2col {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .box-title,
    .box-desc,
    .box-features {
        min-height: auto;
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    
    .footer-brand {
        grid-column: span 2;
        margin-bottom: 10px;
    }
    
    .footer-bottom-container {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .back-to-top {
        bottom: 135px;
        right: 20px;
        width: 42px;
        height: 42px;
    }



    /* FAQ Responsive Styles */

    .faq-title {
        font-size: 1rem;
    }

    .faq-header {
        padding: 20px;
    }

    .faq-item.active .faq-content {
        padding-bottom: 20px;
    }

    .faq-content {
        padding: 0 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .stat-num {
        font-size: 2.25rem;
    }
}

/* 15. Premium Radar Glow Pulse Button Effect */
.btn-radar {
    position: relative;
}

.btn-radar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: inherit;
    border: 2px solid var(--color-secondary);
    animation: radar-pulse-effect 2s infinite ease-out;
    opacity: 0;
    pointer-events: none;
}

@keyframes radar-pulse-effect {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}

/* ==========================================================================
   Sticky CTA Bar Styles
   ========================================================================== */
.sticky-cta-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.06);
    padding: 14px 24px calc(14px + env(safe-area-inset-bottom, 0px));
    z-index: 998; /* Dưới z-index của modal (999) */
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.sticky-cta-bar.show {
    transform: translateY(0);
}

.sticky-cta-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sticky-cta-text {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
    margin: 0;
    letter-spacing: -0.01em;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.text-highlight {
    color: var(--color-primary);
    font-weight: 700;
}

.live-pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    display: inline-block;
    position: relative;
    flex-shrink: 0;
}

.live-pulse-dot::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: #10b981;
    border-radius: 50%;
    animation: pulse-ring 1.8s cubic-bezier(0.455, 0.03, 0.515, 0.955) infinite;
}

@keyframes pulse-ring {
    0% {
        transform: scale(1);
        opacity: 0.85;
    }
    100% {
        transform: scale(3.2);
        opacity: 0;
    }
}

#sticky-cta-btn {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
}

/* Responsive cho Mobile */
@media (max-width: 768px) {
    .sticky-cta-bar {
        padding: 10px 16px calc(10px + env(safe-area-inset-bottom, 0px));
    }
    
    .sticky-cta-text {
        font-size: 14px;
        max-width: 68%;
        line-height: 1.35;
        gap: 8px;
    }
    
    #sticky-cta-btn {
        padding: 8px 14px;
        font-size: 13px;
    }
}

/* ==========================================================================
   Merged About & Why Choose Us Section Styles (V2 Side-by-Side)
   ========================================================================== */
.merged-content-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: stretch;
    margin-top: 40px;
}

.reasons-column, .stats-column {
    display: flex;
    flex-direction: column;
}

.column-subtitle {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    position: relative;
    padding-left: 14px;
}

.column-subtitle::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 4px;
    background: var(--color-primary);
    border-radius: 2px;
}

.reasons-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.reason-item {
    display: flex;
    gap: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 18px 20px;
    border-radius: 12px;
    transition: var(--transition-normal);
    align-items: flex-start;
}

.reason-item:hover {
    transform: translateX(6px);
    border-color: rgba(2, 132, 199, 0.25);
    box-shadow: var(--shadow-md);
}

.reason-icon-wrapper {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    color: var(--color-primary);
    flex-shrink: 0;
    transition: var(--transition-normal);
}

.reason-icon-wrapper svg {
    width: 20px;
    height: 20px;
    stroke-width: 2.2px;
}

.reason-item:hover .reason-icon-wrapper {
    background: var(--color-primary);
    color: var(--text-white);
    box-shadow: var(--shadow-glow-blue);
}

.reason-text-wrapper {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.reason-title {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.reason-desc {
    font-family: var(--font-body);
    font-size: 0.925rem;
    line-height: 1.5;
    color: var(--text-secondary);
    margin: 0;
}

/* About Stats override for 2x2 grid */
.stats-grid-container.stats-bar {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 20px;
    padding: 32px 24px !important;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    background-image: none;
    height: 100%;
    align-items: stretch !important;
    align-content: stretch !important;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color-light);
    border-radius: 12px;
    transition: var(--transition-normal);
    text-align: center;
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: rgba(2, 132, 199, 0.25);
    box-shadow: var(--shadow-sm);
}

.stat-card .stat-num {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.1;
}

.stat-card .stat-label {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.4;
    margin: 0;
}

/* Partners & Trust Section (Option 1) */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.partner-card {
    padding: 28px 22px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.partner-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(2, 132, 199, 0.08);
    color: var(--color-primary);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 14px;
    align-self: flex-start;
}

.partner-name {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.35;
}

.partner-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

.trust-badges-bar {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    padding: 24px 32px;
    background: var(--bg-primary);
}

.trust-badge-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.925rem;
}

.trust-badge-item svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .merged-content-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 576px) {
    .partners-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .trust-badges-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 20px;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-brand {
        grid-column: span 1;
    }

    .stats-grid-container.stats-bar {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        gap: 16px;
        padding: 24px 16px !important;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .stat-card .stat-num {
        font-size: 2rem;
    }
}

/* ==========================================================================
   Smart-Zalo CSS Integration Styles (Right-side Stack V2)
   ========================================================================== */

/* Zalo in Contact details section */
.btn-zalo-link {
    display: inline-flex;
    align-items: center;
    background-color: #0068ff;
    color: #ffffff;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.2s ease;
    box-shadow: 0 4px 12px rgba(0, 104, 255, 0.2);
}

.btn-zalo-link:hover {
    background-color: #0056d6;
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0, 104, 255, 0.3);
}

.zalo-qr-box-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 6px;
}

.zalo-inline-qr-img {
    width: 84px;
    height: 84px;
    object-fit: contain;
    display: block;
}

.zalo-qr-hint {
    font-size: 11px;
    color: var(--text-muted);
    margin: 0;
    font-weight: 500;
}

/* Zalo Tooltip inside Footer contact details */
.zalo-tooltip-wrapper {
    position: relative;
    display: inline-block;
}

.footer-zalo-link {
    color: #38bdf8; /* Soft blue to highlight */
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-zalo-link:hover {
    color: #7dd3fc;
    text-decoration: underline;
}

.zalo-tooltip-content {
    visibility: hidden;
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    padding: 12px;
    border-radius: 12px;
    z-index: 100;
    text-align: center;
    width: 140px;
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

.zalo-tooltip-content::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -6px;
    border-width: 6px;
    border-style: solid;
    border-color: #ffffff transparent transparent transparent;
}

.zalo-tooltip-qr {
    width: 116px;
    height: 116px;
    object-fit: contain;
    display: block;
    margin: 0 auto 6px;
    border-radius: 6px;
    border: 1px solid #f1f5f9;
}

.zalo-tooltip-text {
    font-size: 11px;
    color: #475569;
    font-weight: 500;
    display: block;
    line-height: 1.3;
}

.zalo-tooltip-wrapper:hover .zalo-tooltip-content {
    visibility: visible;
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Floating Zalo Button - Bottom Right (Vertical Stack above Back to Top) */
.floating-zalo-wrapper {
    position: fixed;
    bottom: 95px; /* Below Back to Top button which is at bottom: 160px */
    right: 30px;
    z-index: 997;
    display: flex;
    align-items: center;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.zalo-float-btn {
    width: 48px;
    height: 48px;
    background-color: #0068ff;
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 104, 255, 0.3);
    transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
    border: none;
    cursor: pointer;
}

.zalo-float-btn:hover {
    transform: scale(1.1);
    background-color: #0056d6;
    box-shadow: 0 6px 24px rgba(0, 104, 255, 0.45);
    color: #ffffff;
}

.zalo-speech-bubble {
    width: 24px;
    height: 24px;
    stroke: #ffffff;
    fill: none;
}

/* QR code box pops out to the LEFT of Zalo button */
.zalo-float-qr-box {
    visibility: hidden;
    position: absolute;
    bottom: 0;
    right: 80px; /* offset to the left to avoid any overlap with circular buttons */
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    padding: 12px;
    border-radius: 12px;
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    transform: translateX(-10px);
    width: 140px;
    text-align: center;
}

.zalo-float-qr-box::after {
    content: "";
    position: absolute;
    top: 18px;
    left: 100%; /* Arrow on the right pointing to Zalo button */
    border-width: 6px;
    border-style: solid;
    border-color: transparent transparent transparent #ffffff;
}

.zalo-float-qr-img {
    width: 116px;
    height: 116px;
    object-fit: contain;
    display: block;
    margin: 0 auto 6px;
    border-radius: 6px;
    border: 1px solid #f1f5f9;
}

.zalo-float-qr-box p {
    font-size: 11px;
    color: #475569;
    font-weight: 500;
    margin: 0;
}

.floating-zalo-wrapper:hover .zalo-float-qr-box {
    visibility: visible;
    opacity: 1;
    transform: translateX(0);
}

/* Visibility classes based on device */
.show-on-mobile-inline {
    display: none;
}

.show-on-desktop-block {
    display: block;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .show-on-mobile-inline {
        display: inline-flex;
    }
    
    .show-on-desktop-block {
        display: none;
    }
    
    .floating-zalo-wrapper {
        bottom: calc(75px + env(safe-area-inset-bottom, 0px)); /* Stacked below mobile Back to Top at bottom: 135px */
        right: 20px;
    }
    
    .zalo-float-btn {
        width: 44px;
        height: 44px;
    }
    
    .zalo-speech-bubble {
        width: 22px;
        height: 22px;
    }
    
    /* Disable tooltip on touch devices */
    .zalo-tooltip-wrapper:hover .zalo-tooltip-content {
        visibility: hidden;
        opacity: 0;
    }
    
    .floating-zalo-wrapper:hover .zalo-float-qr-box {
        visibility: hidden;
        opacity: 0;
    }
}