/* ============================================
   HIGH / LOW - Premium Supplement Website
   Colors: Yellow #ddcc38, Blue #79b4d9
   ============================================ */

/* IntelOne Display Font */
@font-face {
    font-family: 'IntelOne Display';
    src: url('fonts/intelone-display-light.ttf') format('truetype');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'IntelOne Display';
    src: url('fonts/intelone-display-regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'IntelOne Display';
    src: url('fonts/intelone-display-medium.ttf') format('truetype');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'IntelOne Display';
    src: url('fonts/intelone-display-bold.ttf') format('truetype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

:root {
    /* Brand Colors */
    --color-high: #ddcc38;
    --color-low: #79b4d9;
    --color-high-dark: #c4b430;
    --color-low-dark: #5a9bc4;

    /* Neutrals - Light Mode */
    --color-bg: #ffffff;
    --color-bg-alt: #f8f8f8;
    --color-bg-card: #ffffff;
    --color-text: #1a1a1a;
    --color-text-light: #555;
    --color-text-muted: #777;
    --color-border: rgba(0, 0, 0, 0.08);

    /* Legacy aliases */
    --color-dark: #1a1a1a;
    --color-dark-light: #f8f8f8;
    --color-dark-lighter: #f0f0f0;
    --color-gray: #555;
    --color-gray-light: #777;
    --color-white: #ffffff;
    --color-off-white: #1a1a1a;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'IntelOne Display', 'Inter', sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-xxl: 10rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Typography */
.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 500;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.lead-text {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--color-text-light);
    max-width: 700px;
    line-height: 1.7;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-high), var(--color-high-dark));
    color: var(--color-dark);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(221, 204, 56, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-gray);
}

.btn-secondary:hover {
    border-color: var(--color-text);
    background: rgba(0, 0, 0, 0.05);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.05rem;
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-sm) 0;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(200, 200, 200, 0.3);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

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

.logo-img-header {
    height: 40px;
    width: auto;
}

.logo-img-full {
    height: 60px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: var(--space-md);
}

.nav-links a {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--color-text);
}

.nav-cta {
    padding: 0.75rem 1.5rem;
}

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

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-video-container {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-video-placeholder {
    width: 100%;
    height: 100%;
    background: url('img/bg-abstract-2.jpg') center/cover no-repeat;
}

.video-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.6);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: var(--space-xl) var(--space-md);
}

.hero-tagline {
    font-size: 0.85rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: var(--space-sm);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 12vw, 8rem);
    font-weight: 400;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.1em;
}

.title-high {
    color: var(--color-high-dark);
}

.title-logo {
    height: 0.8em;
    width: auto;
    margin: 0 0.1em;
    vertical-align: middle;
}

.title-low {
    color: var(--color-low-dark);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

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

.scroll-indicator {
    position: absolute;
    bottom: var(--space-md);
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-text-muted);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator span::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-text-muted);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.3; transform: translateX(-50%) translateY(10px); }
}

/* ============================================
   PROBLEM SECTION
   ============================================ */
.problem {
    padding: var(--space-xxl) 0;
    background: var(--color-bg);
}

.problem-intro {
    max-width: 700px;
    margin-bottom: var(--space-xl);
}

.highlight-text {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--color-high);
    margin-top: var(--space-md);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.problem-card {
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all var(--transition-normal);
}

.problem-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

.problem-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-md);
    color: var(--color-high);
}

.problem-icon svg {
    width: 100%;
    height: 100%;
}

.problem-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.problem-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* ============================================
   TRUTH BANNER
   ============================================ */
.truth-banner {
    padding: var(--space-xl) 0;
    background: url('img/bg-abstract-1.jpg') center/cover no-repeat;
    text-align: center;
    position: relative;
}

.truth-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.6);
}

.truth-banner .container {
    position: relative;
    z-index: 1;
}

.truth-text {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    max-width: 900px;
    margin: 0 auto var(--space-md);
    color: var(--color-text);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
}

.truth-highlight {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    color: var(--color-text);
    text-shadow: 0 1px 3px rgba(255, 255, 255, 0.5);
}

/* ============================================
   VISION SECTION
   ============================================ */
.vision {
    padding: var(--space-xxl) 0;
}

.vision .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.vision-text {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.vision-highlight {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: var(--color-text);
}

.vision-image {
    position: relative;
}

.vision-image img {
    border-radius: 8px;
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.5);
}

/* ============================================
   PRODUCT EXPLANATION
   ============================================ */
.product-explain {
    padding: var(--space-xxl) 0;
    background: var(--color-bg-alt);
}

.product-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-lg);
}

.principle-badge {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    font-family: var(--font-display);
    font-size: clamp(1rem, 2vw, 1.5rem);
    letter-spacing: 0.1em;
}

.principle-badge span:first-child {
    color: var(--color-high-dark);
}

.principle-badge .divider {
    color: var(--color-text-muted);
}

.principle-badge .divider-logo {
    height: 1.2em;
    width: auto;
    vertical-align: middle;
}

.principle-badge span:last-child {
    color: var(--color-low-dark);
}

.product-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.product-card {
    padding: var(--space-lg);
    border-radius: 12px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.high-card {
    border-top: 3px solid var(--color-high);
}

.low-card {
    border-top: 3px solid var(--color-low);
}

.card-header {
    margin-bottom: var(--space-md);
}

.card-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    border-radius: 4px;
}

.high-card .card-badge {
    background: rgba(221, 204, 56, 0.15);
    color: var(--color-high);
}

.low-card .card-badge {
    background: rgba(121, 180, 217, 0.15);
    color: var(--color-low);
}

.product-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.product-card > p {
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.feature-list li {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.feature-list li strong {
    color: var(--color-text);
    display: block;
    margin-bottom: 0.25rem;
}

.product-cta {
    text-align: center;
}

/* ============================================
   APPLICATION SECTION
   ============================================ */
.application {
    padding: var(--space-xxl) 0;
}

.application .section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.application-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-lg);
}

.application-card {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.app-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.cap-count {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 500;
    line-height: 1;
}

.high-app .cap-count {
    color: var(--color-high);
}

.low-app .cap-count {
    color: var(--color-low);
}

.cap-label {
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.app-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.app-content > p {
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.dosage-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.dosage-list li {
    display: flex;
    gap: var(--space-sm);
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.dosage-list li span {
    color: var(--color-high-dark);
    font-weight: 500;
    min-width: 90px;
}

.app-tagline {
    font-style: italic;
    color: var(--color-text-muted);
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials {
    padding: var(--space-xxl) 0;
    background: var(--color-bg-alt);
}

.testimonials .section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-md);
    max-width: 900px;
    margin: 0 auto;
}

.testimonial-card {
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.stars {
    color: var(--color-high);
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    letter-spacing: 0.1em;
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-high), var(--color-low));
}

.author-name {
    font-weight: 500;
    color: var(--color-text);
}

.author-age {
    color: var(--color-text-muted);
    margin-left: var(--space-xs);
}

/* ============================================
   CTA BANNER
   ============================================ */
.cta-banner {
    padding: var(--space-xl) 0;
    background: url('img/bg-gradient-1.jpg') center/cover no-repeat;
    text-align: center;
    position: relative;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.6);
}

.cta-banner .container {
    position: relative;
    z-index: 1;
}

.cta-banner h2 {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.cta-banner .btn-primary {
    background: var(--color-text);
    color: var(--color-bg);
}

.cta-banner .btn-primary:hover {
    background: #333;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

/* ============================================
   PERSONAS SECTION
   ============================================ */
.personas {
    padding: var(--space-xxl) 0;
}

.personas .section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.persona-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.persona-card {
    background: var(--color-bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all var(--transition-normal);
}

.persona-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.persona-image {
    height: 200px;
    background: linear-gradient(135deg, var(--color-high), var(--color-low));
    opacity: 0.6;
}

.persona-content {
    padding: var(--space-md);
}

.persona-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.persona-subtitle {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.persona-content > p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
}

.persona-highlight {
    color: var(--color-high-dark);
    font-weight: 500;
}

/* ============================================
   FORMULA SECTION
   ============================================ */
.formula {
    padding: var(--space-xxl) 0;
    background: var(--color-bg-alt);
}

.formula-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-xl);
}

.formula-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

@media (max-width: 1024px) {
    .formula-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .formula-grid {
        grid-template-columns: 1fr;
    }
}

.formula-card {
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    text-align: center;
}

.formula-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    color: var(--color-low-dark);
}

.formula-icon svg {
    width: 100%;
    height: 100%;
}

.formula-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.formula-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ============================================
   SPECIAL SECTION
   ============================================ */
.special {
    padding: var(--space-xxl) 0;
}

.special .section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.special-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.special-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.special-item p {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ============================================
   PROMISE SECTION
   ============================================ */
.promise {
    padding: var(--space-xxl) 0;
    background: var(--color-bg-alt);
    text-align: center;
}

.promise-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-lg);
}

.promise-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.promise-item svg {
    width: 24px;
    height: 24px;
    color: var(--color-high);
}

.promise-item span {
    font-size: 0.95rem;
}

.promise-tagline {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--color-text-light);
}

/* ============================================
   BUY SECTION
   ============================================ */
.buy {
    padding: var(--space-xxl) 0;
    text-align: center;
}

.buy .section-title {
    margin-bottom: var(--space-xs);
}

.buy .lead-text {
    margin: 0 auto var(--space-xl);
}

.buy-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
    max-width: 700px;
    margin: 0 auto var(--space-lg);
}

.buy-card {
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    position: relative;
}

.buy-card.featured {
    border-color: var(--color-high);
    background: linear-gradient(180deg, rgba(221, 204, 56, 0.1) 0%, var(--color-bg-card) 100%);
}

.buy-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-high);
    color: var(--color-dark);
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    border-radius: 4px;
}

.buy-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.price {
    margin-bottom: var(--space-md);
}

.price .amount {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 500;
}

.price .unit {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.buy-features {
    margin-bottom: var(--space-md);
    text-align: left;
}

.buy-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.buy-features li:last-child {
    border-bottom: none;
}

.buy-guarantee {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq {
    padding: var(--space-xxl) 0;
    background: var(--color-bg-alt);
}

.faq .section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    background: none;
    border: none;
    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-high-dark);
}

.faq-question svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-normal);
    flex-shrink: 0;
    margin-left: var(--space-sm);
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding-bottom: var(--space-md);
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ============================================
   B2B SECTION
   ============================================ */
.b2b {
    padding: var(--space-xxl) 0;
    background: url('img/bg-blue-dark.jpg') center/cover no-repeat;
    position: relative;
}

.b2b::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 40, 80, 0.4);
}

.b2b .container {
    position: relative;
    z-index: 1;
}

.b2b-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.b2b .section-title {
    color: var(--color-white);
}

.b2b-tagline {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--color-white);
    opacity: 0.9;
    margin-bottom: var(--space-md);
}

.b2b-content > p {
    color: var(--color-white);
    opacity: 0.85;
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.b2b .btn-secondary {
    border-color: var(--color-white);
    color: var(--color-white);
}

.b2b .btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-dark);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: var(--space-xl) 0 var(--space-md);
    background: var(--color-text);
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    margin-top: var(--space-sm);
}

.footer-company {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.footer-links h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.footer-links a {
    display: block;
    padding: 0.35rem 0;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: #ffffff;
}

.footer-bottom {
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .vision .container {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .vision-content {
        order: 2;
    }

    .vision-image {
        order: 1;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-cta {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .product-cards,
    .application-grid {
        grid-template-columns: 1fr;
    }

    .application-card {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .app-visual {
        padding-bottom: var(--space-md);
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .dosage-list li {
        flex-direction: column;
        gap: 0.25rem;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md);
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 480px) {
    :root {
        --space-md: 1.5rem;
        --space-lg: 3rem;
        --space-xl: 4rem;
        --space-xxl: 6rem;
    }

    .hero-title {
        font-size: 3rem;
    }

    .btn-large {
        padding: 1rem 2rem;
        font-size: 0.95rem;
    }

    .persona-slider {
        grid-template-columns: 1fr;
    }

    .buy-options {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}