/* ==========================================
   KOVI CORDYCEPS LANDING PAGE DESIGN SYSTEM
   ========================================== */

/* Design Tokens & Variables */
:root {
    /* Color Palette */
    --bg-darker: #021510;
    --bg-dark: #052c20;
    --bg-card: #0b3d2f;
    --bg-card-hover: #124d3d;
    --text-light: #f0fdf4;
    --text-muted: #94a3b8;
    
    --gold: #d97706;
    --gold-light: #f59e0b;
    --gold-bright: #fbbf24;
    --gold-dark: #b45309;
    --gold-glow: rgba(217, 119, 6, 0.4);
    --gold-glass: rgba(217, 119, 6, 0.1);
    
    --red-alert: #ef4444;
    --red-glow: rgba(239, 68, 68, 0.2);
    
    --white: #ffffff;
    
    /* Fonts */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Montserrat', sans-serif;
    
    /* Layouts */
    --container-max-width: 1200px;
    --border-radius-lg: 16px;
    --border-radius-md: 8px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* CSS Reset & General Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    background-color: var(--bg-darker);
    color: var(--text-light);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

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

/* Common Typography & Utilities */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--white);
    line-height: 1.3;
}

p {
    font-size: 1rem;
    color: var(--text-muted);
}

.text-center { text-align: center; }
.text-gold { color: var(--gold-light) !important; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }

.section {
    padding: 80px 0;
    position: relative;
}

.section-tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--gold-glass);
    border: 1px solid var(--gold);
    color: var(--gold-bright);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: 50px;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 800;
}

.section-desc {
    max-width: 700px;
    margin: 0 auto 50px auto;
    font-size: 1.1rem;
    line-height: 1.7;
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: 30px;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.items-center { align-items: center; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    outline: none;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 18px 36px;
    font-size: 1.05rem;
}

.btn-gold {
    background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
    color: var(--bg-darker);
    box-shadow: 0 4px 15px var(--gold-glow);
}

.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--gold-glow);
    background: linear-gradient(135deg, var(--gold-bright), var(--gold));
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--gold);
}

.btn-outline:hover {
    background: var(--gold-glass);
    transform: translateY(-2px);
}

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

/* Animations */
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(245, 158, 11, 0); }
    100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}

@keyframes pulseLarge {
    0% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.8); transform: scale(1); }
    50% { transform: scale(1.02); }
    70% { box-shadow: 0 0 0 20px rgba(245, 158, 11, 0); }
    100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); transform: scale(1); }
}

.btn-pulse {
    animation: pulse 2s infinite;
}

.btn-pulse-large {
    animation: pulseLarge 2.5s infinite;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(2, 21, 16, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(217, 119, 6, 0.15);
    transition: var(--transition-smooth);
    padding: 15px 0;
}

.header.scrolled {
    padding: 10px 0;
    background: rgba(2, 21, 16, 0.95);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

.logo-area {
    display: flex;
    flex-direction: column;
}

.logo-gold {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--gold-bright), var(--gold-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}

.logo-sub {
    font-size: 0.65rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--text-light);
    opacity: 0.8;
}

.nav-bar {
    display: flex;
    gap: 24px;
}

.nav-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
    opacity: 0.8;
    letter-spacing: 0.5px;
}

.nav-link:hover {
    color: var(--gold-light);
    opacity: 1;
}

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

.mobile-menu-toggle .bar {
    width: 25px;
    height: 3px;
    background-color: var(--white);
    transition: var(--transition-smooth);
}

/* Hero Section */
.hero-section {
    padding-top: 160px;
    padding-bottom: 80px;
    background: radial-gradient(circle at 80% 30%, var(--bg-dark) 0%, var(--bg-darker) 70%);
    position: relative;
    overflow: hidden;
}

.hero-bg-glow {
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--gold-glow) 0%, rgba(2, 21, 16, 0) 70%);
    z-index: 1;
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.badge-premium {
    display: inline-block;
    padding: 6px 12px;
    background: var(--gold-glass);
    color: var(--gold-bright);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 4px;
    margin-bottom: 20px;
    letter-spacing: 1.5px;
    border-left: 3px solid var(--gold);
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 900;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.15rem;
    line-height: 1.8;
    margin-bottom: 30px;
    color: var(--text-light);
    opacity: 0.9;
}

.hero-badges {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 35px;
}

.hero-badge-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    font-weight: 500;
}

.badge-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--gold);
    color: var(--bg-darker);
    font-size: 0.7rem;
    font-weight: 800;
}

.hero-actions {
    display: flex;
    gap: 20px;
    align-items: center;
}

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

.image-glow-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    max-width: 570px;
    max-height: 570px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--gold-glow) 0%, rgba(2, 21, 16, 0) 65%);
    z-index: 1;
}

.hero-image {
    position: relative;
    z-index: 2;
    max-width: 100%;
    width: 525px; /* Tăng 1.5 lần so với 350px cũ */
    height: auto;
    filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.5));
    border-radius: 20px;
    transition: var(--transition-smooth);
}

.hero-image:hover {
    transform: scale(1.03) rotate(1deg);
}

/* Stats Bar */
.stats-bar {
    background: rgba(11, 61, 47, 0.4);
    border-top: 1px solid rgba(217, 119, 6, 0.2);
    border-bottom: 1px solid rgba(217, 119, 6, 0.2);
    padding: 30px 0;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    position: relative;
    z-index: 3;
    margin-top: 40px;
}

.stat-card-image {
    /* BẠN CÓ THỂ ĐỔI KÍCH THƯỚC ẢNH MINH HỌA (STATS) TẠI ĐÂY (Ví dụ: 240px, 300px hoặc 100%) */
    width: 240px; 
    height: auto; /* Để tự động theo tỷ lệ chiều cao, giúp ảnh không bị méo */
    object-fit: contain;
    margin: 0 auto 15px auto;
    display: block;
    filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.3));
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: var(--transition-smooth);
}

.stat-card:hover .stat-card-image {
    transform: scale(1.05) translateY(-2px);
    border-color: var(--gold);
    filter: drop-shadow(0 6px 15px var(--gold-glow));
}

/* Header Logo Styles */
.header-logo {
    height: 48px; /* Tăng giảm chiều cao logo tại đây */
    width: auto;
    object-fit: contain;
    display: block;
    transition: var(--transition-smooth);
}

.header-logo:hover {
    transform: scale(1.03);
}

/* Advantages Grid Image Styles */
/* KÍCH THƯỚC ẢNH CHUẨN: Tỷ lệ 16:9 (Khuyên dùng độ phân giải 800x450 px hoặc bất kỳ ảnh 16:9 nào) */
.adv-card-image {
    width: 100%;
    aspect-ratio: 16 / 9; /* Tỷ lệ vàng giúp ảnh hiển thị đồng bộ trên mọi thiết bị */
    height: auto;
    object-fit: contain; /* HIỂN THỊ ĐẦY ĐỦ ẢNH: Không cắt xén, không bóp méo */
    background-color: var(--bg-darker); /* Nền đen xanh lục sẫm giúp phân biệt rõ ràng mép của các tài liệu nền trắng */
    padding: 8px; /* Tạo khung đệm tinh tế xung quanh ảnh */
    margin-bottom: 20px;
    display: block;
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(217, 119, 6, 0.3); /* Đường viền vàng cam sắc nét hơn */
    filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.25));
    transition: var(--transition-smooth);
}

.adv-card:hover .adv-card-image {
    transform: translateY(-3px) scale(1.02);
    border-color: var(--gold-light);
    box-shadow: 0 8px 20px var(--gold-glow);
}

.adv-card-image-full {
    width: 120px;
    height: 120px;
    object-fit: contain;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.2));
    transition: var(--transition-smooth);
    flex-shrink: 0;
}

.adv-card-full:hover .adv-card-image-full {
    transform: scale(1.08) rotate(1deg);
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    text-align: center;
}

.stat-card {
    border-right: 1px solid rgba(217, 119, 6, 0.15);
}

.stat-card:last-child {
    border-right: none;
}

.stat-num {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--gold-bright);
    line-height: 1;
    margin-bottom: 5px;
    font-family: var(--font-body);
}

.stat-unit {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
    text-transform: uppercase;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Pain Points Section */
.section-painpoints {
    background: linear-gradient(180deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
}

.pain-card {
    background: var(--bg-card);
    border: 1px solid rgba(239, 68, 68, 0.1);
    border-radius: var(--border-radius-lg);
    padding: 35px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.pain-card:hover {
    transform: translateY(-8px);
    border-color: rgba(239, 68, 68, 0.3);
    box-shadow: 0 12px 30px var(--red-glow);
}

.card-icon-area {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.card-icon-red {
    background: var(--red-glow);
    color: var(--red-alert);
}

.pain-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    font-family: var(--font-body);
    font-weight: 700;
}

.pain-card p {
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Solution Section */
.section-solution {
    background: var(--bg-dark);
}

.solution-text h2 {
    margin-bottom: 20px;
}

.solution-intro {
    font-size: 1.05rem;
    margin-bottom: 30px;
    color: var(--text-light);
    opacity: 0.95;
}

.solution-points {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sol-point-item {
    display: flex;
    gap: 16px;
}

.sol-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background-color: var(--gold-light);
    border-radius: 50%;
    color: var(--bg-darker);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.85rem;
}

.sol-point-item div {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.sol-point-item strong {
    color: var(--white);
    display: block;
    margin-bottom: 4px;
}

.comparison-card {
    background: var(--bg-card);
    border: 1px solid rgba(217, 119, 6, 0.2);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.comparison-card h3 {
    font-size: 1.3rem;
    text-align: center;
    margin-bottom: 24px;
    color: var(--white);
}

.comp-row {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.85rem;
    align-items: center;
}

.comp-row:last-child {
    border-bottom: none;
}

.comp-row.head-row {
    font-weight: 700;
    color: var(--white);
    font-size: 0.9rem;
    border-bottom: 2px solid var(--gold);
    padding-bottom: 12px;
}

.comp-row div:nth-child(2) {
    font-weight: 600;
}

.comp-row div:nth-child(3) {
    opacity: 0.6;
}

/* Advantages Section */
.section-advantages {
    background: var(--bg-darker);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.adv-card {
    background: var(--bg-card);
    border: 1px solid rgba(217, 119, 6, 0.1);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    transition: var(--transition-smooth);
    position: relative;
}

.adv-card:hover {
    transform: translateY(-5px);
    border-color: rgba(217, 119, 6, 0.3);
    background: var(--bg-card-hover);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.adv-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: rgba(217, 119, 6, 0.15);
    position: absolute;
    top: 20px;
    right: 30px;
    font-family: var(--font-body);
}

.adv-card h3 {
    font-size: 1.05rem; /* Thu nhỏ tiêu đề thẻ để cân đối hơn */
    font-weight: 700;
    margin-bottom: 10px;
    font-family: var(--font-body);
    line-height: 1.4;
    padding-right: 40px; /* Leave space for number */
    color: var(--gold-bright);
}

.adv-card p {
    font-size: 0.8rem; /* Thu nhỏ mô tả thành dạng chữ chú thích theo yêu cầu */
    line-height: 1.5;
    color: rgba(240, 253, 244, 0.75); /* Đảm bảo độ sáng chữ vừa phải */
}

.adv-card-full {
    grid-column: span 3;
    background: linear-gradient(135deg, var(--bg-card) 0%, #032018 100%);
    border-color: var(--gold);
    display: flex;
    align-items: center;
    gap: 30px;
}

.adv-card-full .adv-number {
    position: static;
    font-size: 3.5rem;
    line-height: 1;
    opacity: 0.4;
    color: var(--gold-bright);
}

.adv-card-full h3 {
    padding-right: 0;
    font-size: 1.3rem;
    margin-bottom: 6px;
}

/* Process Section */
.section-process {
    background: var(--bg-dark);
}

.process-image-wrapper {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
    border: 2px solid rgba(217, 119, 6, 0.2);
}

.process-image {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.process-image:hover {
    transform: scale(1.03);
}

.process-text {
    padding-left: 20px;
}

.process-text p {
    margin-bottom: 30px;
    color: var(--text-light);
    opacity: 0.9;
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

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

.time-step {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background-color: var(--gold);
    color: var(--bg-darker);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1rem;
    font-family: var(--font-body);
}

.timeline-item h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 4px;
    font-family: var(--font-body);
    color: var(--white);
}

.timeline-item p {
    margin-bottom: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Benefits Section */
.section-benefits {
    background: var(--bg-darker);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.benefit-card {
    background: var(--bg-card);
    border: 1px solid rgba(217, 119, 6, 0.1);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    text-align: center;
    transition: var(--transition-smooth);
}

.benefit-card:hover {
    transform: translateY(-8px);
    border-color: var(--gold-light);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.benefit-icon {
    font-size: 2.8rem;
    margin-bottom: 20px;
    display: inline-block;
}

.benefit-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
    font-family: var(--font-body);
    color: var(--white);
}

.benefit-card p {
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Testimonials Section */
.section-testimonials {
    background: var(--bg-dark);
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.rating {
    font-size: 0.9rem;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.testimonial-text {
    font-style: italic;
    font-size: 0.95rem;
    color: var(--text-light);
    opacity: 0.9;
    line-height: 1.6;
    margin-bottom: 24px;
}

.client-info {
    display: flex;
    align-items: center;
    gap: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 20px;
}

.client-avatar {
    width: 144px;
    height: 144px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(217, 119, 6, 0.45);
    display: block;
    flex-shrink: 0;
    transition: var(--transition-smooth);
}

.testimonial-card:hover .client-avatar {
    border-color: var(--gold-light);
    transform: scale(1.05);
}

.client-name {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 2px;
    color: var(--white);
    font-family: var(--font-body);
}

.client-role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Order Section (Packages & Form) */
.section-order {
    background: var(--bg-darker);
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.package-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    padding: 40px 30px;
    text-align: center;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-smooth);
}

.package-card:hover {
    transform: scale(1.02);
}

.package-card.featured {
    border: 2px solid var(--gold);
    box-shadow: 0 15px 40px var(--gold-glow);
    background: linear-gradient(180deg, var(--bg-card) 0%, #064032 100%);
}

.pack-badge {
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-radius: 50px;
    letter-spacing: 0.5px;
    white-space: nowrap; /* Giúp chữ không bị xuống dòng làm lệch kích thước */
}

/* Package Card Image Styles */
.package-card-image {
    width: 100%;
    height: 180px;
    object-fit: contain;
    margin: 15px auto 20px auto;
    display: block;
    filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.3));
    transition: var(--transition-smooth);
}

.package-card:hover .package-card-image {
    transform: scale(1.04);
}

.pack-badge-hot {
    background: var(--gold-light);
    color: var(--bg-darker);
}

.package-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-top: 10px;
    margin-bottom: 15px;
    font-family: var(--font-body);
}

.package-card .price {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--gold-bright);
    margin-bottom: 5px;
}

.package-card .old-price {
    display: block;
    font-size: 1rem;
    text-decoration: line-through;
    color: var(--text-muted);
    font-weight: 400;
}

.pack-detail {
    font-size: 0.85rem;
    margin-bottom: 24px;
    line-height: 1.4;
}

.package-card ul {
    list-style: none;
    text-align: left;
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.package-card li {
    font-size: 0.85rem;
    color: var(--text-light);
    opacity: 0.9;
}

.package-card .btn {
    margin-top: auto;
}

/* Order Form Styling */
.order-form-container {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(11, 61, 47, 0.5);
    border: 1px solid rgba(217, 119, 6, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.form-header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 20px;
}

.form-header h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    font-family: var(--font-body);
}

.order-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--white);
}

.form-group label .required {
    color: var(--red-alert);
}

.form-group input, 
.form-group select {
    width: 100%; /* Chiếm trọn chiều rộng của cột chứa */
    max-width: 100%; /* Ngăn chặn hiện tượng tràn viền của ô chọn select */
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    background: rgba(2, 21, 16, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--white);
    border-radius: var(--border-radius-md);
    outline: none;
    transition: var(--transition-smooth);
}

.form-group input:focus, 
.form-group select:focus {
    border-color: var(--gold);
    box-shadow: 0 0 10px rgba(217, 119, 6, 0.2);
}

.form-group input.invalid {
    border-color: var(--red-alert);
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.2);
}

.error-msg {
    color: var(--red-alert);
    font-size: 0.75rem;
    display: none;
}

.total-calc-box {
    background: rgba(217, 119, 6, 0.1);
    border: 1px solid var(--gold);
    padding: 16px;
    border-radius: var(--border-radius-md);
    text-align: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--white);
}

.total-price-display {
    color: var(--gold-bright);
    font-size: 1.4rem;
    margin-left: 10px;
}

.form-footer-note {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 5px;
}

/* FAQ Accordion Styling */
.section-faq {
    background: var(--bg-dark);
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-item:hover {
    border-color: rgba(217, 119, 6, 0.2);
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    text-align: left;
    color: var(--white);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-smooth);
}

.faq-question .arrow {
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--gold-light);
    transition: var(--transition-smooth);
}

.faq-item.active {
    border-color: var(--gold);
}

.faq-item.active .faq-question {
    color: var(--gold-bright);
}

.faq-item.active .faq-question .arrow {
    transform: rotate(45deg);
    color: var(--gold-bright);
}

.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 24px 20px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    transition: max-height 0.3s cubic-bezier(1, 0, 1, 0), padding 0.3s ease;
}

.faq-answer p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-light);
    opacity: 0.85;
}

/* Footer Styling */
.footer {
    background: #010d0a;
    border-top: 1px solid rgba(217, 119, 6, 0.15);
    padding: 60px 0 20px 0;
}

.footer-container {
    display: grid;
    grid-template-columns: 1.5fr 0.5fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-info h3 {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 15px;
    color: var(--gold-bright);
}

.footer-info p {
    margin-bottom: 12px;
    font-size: 0.9rem;
    line-height: 1.5;
}

.footer-links h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--white);
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-links a:hover {
    color: var(--gold-bright);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
}

.disclaimer {
    display: block;
    margin-top: 10px;
    color: rgba(148, 163, 184, 0.5);
    font-size: 0.75rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

/* Modal Popup Styling */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(2, 21, 16, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border: 2px solid var(--gold);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    max-width: 500px;
    width: 100%;
    text-align: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    animation: pulseLarge 2.5s infinite; /* Slow breathing effect */
}

.modal-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gold);
    color: var(--bg-darker);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0 auto 24px auto;
}

.modal h2 {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.modal p {
    font-size: 0.95rem;
    color: var(--text-light);
    opacity: 0.9;
    margin-bottom: 24px;
}

.order-summary-box {
    background: rgba(2, 21, 16, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius-md);
    padding: 20px;
    text-align: left;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.order-summary-box p {
    margin-bottom: 0;
    font-size: 0.9rem;
    color: var(--text-light);
}

.modal-note {
    font-size: 0.8rem !important;
    color: var(--text-muted) !important;
    margin-bottom: 24px !important;
}

/* Global SVG Icons Sizing (Prevents giant icons due to cache delay) */
.cta-icon {
    width: 20px !important;
    height: 20px !important;
    display: inline-block;
    flex-shrink: 0;
}

.w-8 {
    width: 32px !important;
}

.h-8 {
    height: 32px !important;
}

/* Mobile Sticky CTA (Hidden on Desktop) */
.mobile-sticky-cta {
    display: none;
}

/* ==========================================
   MOBILE RESPONSIVENESS & MEDIA QUERIES
   ========================================== */

@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.8rem;
    }
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .adv-card-full {
        grid-column: span 2;
    }
    .packages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .package-card:last-child {
        grid-column: span 2;
        max-width: 50%;
        margin: 0 auto;
    }
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .testimonials-slider {
        grid-template-columns: repeat(2, 1fr);
    }
    .testimonials-slider .testimonial-card:last-child {
        grid-column: span 2;
        max-width: 50%;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    body {
        padding-bottom: 60px;
    }
    
    /* Xếp dọc các ô cảnh báo sức khỏe trên di động (mỗi ô là một hàng ngang đầy đủ, chữ không bị chật) */
    .section-painpoints .grid-3 {
        display: grid;
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .section-painpoints .pain-card {
        width: 100%;
    }
    
    .mobile-sticky-cta {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 60px;
        background: rgba(2, 21, 16, 0.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-top: 1px solid rgba(217, 119, 6, 0.3);
        z-index: 9999;
        box-shadow: 0 -5px 25px rgba(0, 0, 0, 0.5);
    }
    
    .sticky-cta-btn {
        flex: 1;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-size: 0.9rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        transition: var(--transition-smooth);
    }
    
    .btn-call {
        background: rgba(11, 61, 47, 0.95);
        color: var(--gold-light);
        border-right: 1px solid rgba(217, 119, 6, 0.15);
    }
    
    .btn-call:hover {
        background: var(--bg-card-hover);
        color: var(--gold-bright);
    }
    
    .btn-order {
        background: linear-gradient(135deg, var(--gold-light), var(--gold-dark));
        color: var(--bg-darker);
    }
    
    .btn-order:hover {
        background: linear-gradient(135deg, var(--gold-bright), var(--gold));
    }
    
    .cta-icon {
        width: 20px;
        height: 20px;
    }

    .stats-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .stat-card {
        border-right: none !important;
        border-bottom: 1px solid rgba(217, 119, 6, 0.15);
        padding-bottom: 25px;
    }
    .stat-card:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }
    .section {
        padding: 50px 0;
    }
    .section-title {
        font-size: 2rem;
    }
    .grid-2 {
        grid-template-columns: 1fr;
    }
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-image-wrapper {
        order: -1;
        margin-bottom: 20px;
    }
    .hero-badges {
        align-items: center;
    }
    .hero-actions {
        justify-content: center;
        flex-direction: column;
        width: 100%;
    }
    .hero-actions .btn {
        width: 100%;
    }
    .mobile-menu-toggle {
        display: flex;
        padding: 10px;
        margin-right: -10px;
    }
    .nav-bar {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-darker);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        border-bottom: 1px solid rgba(217, 119, 6, 0.2);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    }
    .nav-bar.active {
        display: flex;
    }
    .header-action {
        display: none;
    }
    .comp-row {
        font-size: 0.75rem;
    }
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    .adv-card-full {
        grid-column: span 1;
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    .adv-card-full .adv-number {
        font-size: 2.5rem;
    }
    .process-text {
        padding-left: 0;
        margin-top: 30px;
    }
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    .testimonials-slider {
        grid-template-columns: 1fr;
    }
    .testimonials-slider .testimonial-card:last-child {
        grid-column: span 1;
        max-width: 100%;
    }
    .packages-grid {
        grid-template-columns: 1fr;
    }
    .package-card:last-child {
        grid-column: span 1;
        max-width: 100%;
    }
    .form-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    .order-form-container {
        padding: 20px;
    }
    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.2rem;
    }
    .comp-row {
        grid-template-columns: 1fr;
        gap: 5px;
        text-align: center;
        padding: 10px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .comp-row.head-row {
        display: none; /* Hide header row on very small screens for card style layout */
    }
    .comp-row div::before {
        content: attr(data-label);
        font-weight: 700;
        display: block;
        color: var(--text-muted);
        font-size: 0.7rem;
        margin-bottom: 2px;
    }
}