/* ============================================
   Thermage HK - Modern CSS Styles
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --primary: #c9a86c;
    --primary-light: #e0c896;
    --primary-dark: #a68b4b;
    --secondary: #2d3436;
    --accent: #e17055;
    --background: #fdfbf7;
    --surface: #ffffff;
    --surface-alt: #f8f5f0;
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --text-light: #b2bec3;
    --border: #e8e4dc;
    --shadow: rgba(45, 52, 54, 0.08);
    --shadow-lg: rgba(45, 52, 54, 0.12);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #c9a86c 0%, #e0c896 100%);
    --gradient-hero: linear-gradient(135deg, #2d3436 0%, #4a5568 50%, #2d3436 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(45, 52, 54, 0.9) 0%, rgba(45, 52, 54, 0.7) 100%);

    /* Typography */
    --font-primary: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
}

/* 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-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

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

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    padding: var(--spacing-md) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px var(--shadow);
    padding: var(--spacing-sm) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--surface);
    transition: color var(--transition-fast);
}

.navbar.scrolled .logo {
    color: var(--text-primary);
}

.logo-icon {
    font-size: var(--font-size-2xl);
}

.logo .highlight {
    color: var(--primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.navbar.scrolled .nav-link {
    color: var(--text-secondary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-base);
}

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

.nav-link:hover {
    color: var(--surface);
}

.navbar.scrolled .nav-link:hover {
    color: var(--primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--surface);
    transition: all var(--transition-fast);
}

.navbar.scrolled .nav-toggle span {
    background: var(--text-primary);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-hero);
}

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

.hero-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(201, 168, 108, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(201, 168, 108, 0.1) 0%, transparent 50%);
}

.floating-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--primary-light);
    bottom: -50px;
    left: -50px;
    animation-delay: -7s;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: var(--primary);
    top: 50%;
    left: 30%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(20px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(30px, 10px) scale(1.02); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--spacing-4xl) var(--spacing-lg);
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(201, 168, 108, 0.2);
    border: 1px solid rgba(201, 168, 108, 0.3);
    border-radius: var(--radius-full);
    color: var(--primary-light);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.1s backwards;
}

.title-main {
    display: block;
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--surface);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.title-sub {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 300;
    color: var(--primary-light);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.7);
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease 0.3s backwards;
}

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

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--primary);
}

.stat-suffix {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    margin-top: var(--spacing-xs);
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gradient-primary);
    color: var(--surface);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(201, 168, 108, 0.3);
}

.hero-cta svg {
    transition: transform var(--transition-base);
}

.hero-cta:hover svg {
    transform: translateY(4px);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    animation: fadeInUp 0.8s ease 0.5s backwards;
}

.mouse {
    width: 26px;
    height: 42px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 13px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(12px); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Sections Base
   ============================================ */
.section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(201, 168, 108, 0.1);
    color: var(--primary-dark);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

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

/* ============================================
   About Section
   ============================================ */
.about {
    background: var(--surface);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.about-card {
    padding: var(--spacing-2xl);
    background: var(--background);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-lg);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.card-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--surface);
}

.about-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ============================================
   How It Works Section
   ============================================ */
.how-it-works {
    background: var(--surface-alt);
}

.tech-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.tech-visual {
    position: relative;
}

.skin-diagram {
    background: var(--surface);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 20px 60px var(--shadow-lg);
}

.skin-layer {
    padding: var(--spacing-2xl) var(--spacing-xl);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.epidermis {
    background: linear-gradient(180deg, #ffecd2 0%, #fcb69f 100%);
}

.dermis {
    background: linear-gradient(180deg, #fcb69f 0%, #ee9ca7 100%);
    min-height: 150px;
}

.hypodermis {
    background: linear-gradient(180deg, #ee9ca7 0%, #d4a5a5 100%);
}

.layer-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: rgba(45, 52, 54, 0.7);
    background: rgba(255, 255, 255, 0.6);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.cooling-effect {
    background: rgba(100, 181, 246, 0.3);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: #1565c0;
    animation: pulse 2s infinite;
}

.rf-waves {
    position: absolute;
    right: 20%;
    top: 50%;
    transform: translateY(-50%);
}

.wave {
    width: 40px;
    height: 40px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    position: absolute;
    animation: ripple 2s infinite;
}

.wave:nth-child(2) { animation-delay: 0.4s; }
.wave:nth-child(3) { animation-delay: 0.8s; }

@keyframes ripple {
    0% { transform: scale(0.5); opacity: 1; }
    100% { transform: scale(2); opacity: 0; }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.collagen-fibers {
    position: absolute;
    left: 30%;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: 8px;
}

.fiber {
    width: 4px;
    height: 30px;
    border-radius: 2px;
}

.fiber.old {
    background: rgba(255, 255, 255, 0.4);
}

.fiber.new {
    background: var(--primary);
    animation: grow 3s infinite;
}

@keyframes grow {
    0%, 100% { height: 30px; }
    50% { height: 45px; }
}

.tech-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.tech-step {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--surface);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.tech-step:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 30px var(--shadow);
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--surface);
}

.step-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.step-content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   Treatment Areas Section
   ============================================ */
.treatment-areas {
    background: var(--surface);
}

.areas-interactive {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.body-map {
    position: sticky;
    top: 120px;
}

.body-silhouette {
    position: relative;
    padding: var(--spacing-xl);
}

.body-svg {
    width: 100%;
    height: auto;
}

.body-part {
    fill: var(--border);
    stroke: var(--text-light);
    stroke-width: 1;
    cursor: pointer;
    transition: all var(--transition-base);
}

.body-part:hover,
.body-part.active {
    fill: rgba(201, 168, 108, 0.3);
    stroke: var(--primary);
    stroke-width: 2;
}

.hotspot {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
}

.hotspot-face { top: 8%; left: 50%; transform: translateX(-50%); }
.hotspot-neck { top: 22%; left: 50%; transform: translateX(-50%); }
.hotspot-body { top: 45%; left: 50%; transform: translateX(-50%); }

.hotspot-pulse {
    position: absolute;
    inset: -6px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.4;
    animation: hotspot-pulse 2s infinite;
}

@keyframes hotspot-pulse {
    0% { transform: scale(1); opacity: 0.4; }
    100% { transform: scale(2); opacity: 0; }
}

.area-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.area-card {
    padding: var(--spacing-2xl);
    background: var(--surface-alt);
    border-radius: var(--radius-lg);
    border-left: 4px solid transparent;
    transition: all var(--transition-base);
    opacity: 0.6;
}

.area-card.active {
    opacity: 1;
    border-left-color: var(--primary);
    background: var(--surface);
    box-shadow: 0 10px 40px var(--shadow);
}

.area-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

.area-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.area-card > p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.area-benefits {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.area-benefits li {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    padding-left: var(--spacing-lg);
    position: relative;
}

.area-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 600;
}

.treatment-tips {
    margin-top: var(--spacing-3xl);
}

.tip-card {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(201, 168, 108, 0.1) 0%, rgba(201, 168, 108, 0.05) 100%);
    border: 1px solid rgba(201, 168, 108, 0.2);
    border-radius: var(--radius-lg);
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.tip-icon {
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.tip-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.tip-card p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   Benefits Section
   ============================================ */
.benefits {
    background: var(--surface-alt);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.benefit-card {
    padding: var(--spacing-2xl);
    background: var(--surface);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-lg);
}

.benefit-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-lg);
    background: rgba(201, 168, 108, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.benefit-card:hover .benefit-icon {
    background: var(--gradient-primary);
}

.benefit-icon svg {
    width: 30px;
    height: 30px;
    stroke: var(--primary);
    transition: stroke var(--transition-base);
}

.benefit-card:hover .benefit-icon svg {
    stroke: var(--surface);
}

.benefit-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.benefit-card p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   Timeline Section
   ============================================ */
.timeline {
    background: var(--surface);
}

.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: var(--surface);
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    transition: all var(--transition-base);
}

.timeline-item:hover .timeline-marker {
    background: var(--gradient-primary);
    border-color: var(--primary);
}

.timeline-marker span {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary);
    transition: color var(--transition-base);
}

.timeline-item:hover .timeline-marker span {
    color: var(--surface);
}

.timeline-content {
    flex: 1;
    padding: var(--spacing-lg);
    background: var(--surface-alt);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.timeline-item:hover .timeline-content {
    background: var(--surface);
    box-shadow: 0 10px 30px var(--shadow);
}

.timeline-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.timeline-content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.timeline-duration {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(201, 168, 108, 0.1);
    color: var(--primary-dark);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
}

/* ============================================
   Comparison Section
   ============================================ */
.comparison {
    background: var(--surface-alt);
}

.comparison-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px var(--shadow);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
}

.comparison-table th,
.comparison-table td {
    padding: var(--spacing-lg);
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    background: var(--secondary);
    color: var(--surface);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.comparison-table th.highlight-col {
    background: var(--primary);
}

.comparison-table td {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.comparison-table td.highlight-col {
    background: rgba(201, 168, 108, 0.08);
    color: var(--text-primary);
    font-weight: 500;
}

.comparison-table tbody tr:hover {
    background: var(--surface-alt);
}

.comparison-table tbody tr:hover td.highlight-col {
    background: rgba(201, 168, 108, 0.15);
}

/* ============================================
   FAQ Section
   ============================================ */
.faq {
    background: var(--surface);
}

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

.faq-item {
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.faq-item.active {
    box-shadow: 0 10px 30px var(--shadow);
}

.faq-question {
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--surface);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    text-align: left;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

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

.faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    stroke: var(--primary);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

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

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

.faq-answer p {
    padding: 0 var(--spacing-xl) var(--spacing-xl);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ============================================
   SEO Content Section
   ============================================ */
.seo-content {
    background: var(--surface-alt);
    padding: var(--spacing-3xl) 0;
}

.seo-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.seo-wrapper h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.seo-text {
    columns: 2;
    column-gap: var(--spacing-2xl);
}

.seo-text p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: var(--spacing-lg);
    text-align: justify;
}

.seo-text p:first-child {
    margin-top: 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--secondary);
    color: var(--surface);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
}

.footer-links {
    display: flex;
    gap: var(--spacing-3xl);
}

.footer-column h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-light);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
}

.disclaimer {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: var(--spacing-md);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 20px rgba(201, 168, 108, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(201, 168, 108, 0.4);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
    stroke: var(--surface);
}

/* ============================================
   Reveal Animation
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* ============================================
   Responsive Styles
   ============================================ */
@media (max-width: 1024px) {
    .tech-showcase {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .areas-interactive {
        grid-template-columns: 1fr;
    }

    .body-map {
        position: static;
        max-width: 300px;
        margin: 0 auto var(--spacing-2xl);
    }

    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .seo-text {
        columns: 1;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--surface);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-4xl) var(--spacing-xl);
        gap: var(--spacing-lg);
        box-shadow: -10px 0 30px var(--shadow-lg);
        transition: right var(--transition-base);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        color: var(--text-primary);
        font-size: var(--font-size-lg);
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

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

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

    .area-benefits {
        grid-template-columns: 1fr;
    }

    .timeline-line {
        left: 20px;
    }

    .timeline-marker {
        width: 40px;
        height: 40px;
    }

    .timeline-item {
        gap: var(--spacing-md);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-2xl);
    }

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-xl);
    }

    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-md);
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

    .hero-content {
        padding: var(--spacing-3xl) var(--spacing-md);
    }

    .tip-card {
        flex-direction: column;
        text-align: center;
    }

    .back-to-top {
        width: 44px;
        height: 44px;
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }
}

/* ============================================
   Breadcrumbs
   ============================================ */
.breadcrumbs {
    background: var(--surface);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border);
    margin-top: 60px;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

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

.breadcrumb-item:not(:last-child)::after {
    content: '›';
    color: var(--text-light);
}

.breadcrumb-item a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.breadcrumb-item.active span {
    color: var(--text-primary);
    font-weight: 500;
}

/* ============================================
   Page Content (Non-homepage)
   ============================================ */
.page-content {
    padding: var(--spacing-3xl) 0;
    min-height: calc(100vh - 200px);
}

.page-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.page-header h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.page-header p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Contextual Intro Section
   ============================================ */
.contextual-intro {
    background: linear-gradient(135deg, rgba(201, 168, 108, 0.08) 0%, rgba(201, 168, 108, 0.03) 100%);
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--border);
}

.intro-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.intro-content h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.intro-content p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: var(--spacing-md);
}

.intro-content p:last-child {
    margin-bottom: 0;
}

/* ============================================
   User Guide Section
   ============================================ */
.user-guide {
    background: var(--surface);
    padding: var(--spacing-3xl) 0;
}

.guide-content {
    max-width: 900px;
    margin: 0 auto;
}

.guide-content h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.guide-content > p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.guide-faq {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* ============================================
   Latest Articles Section
   ============================================ */
.latest-articles {
    background: var(--surface-alt);
    padding: var(--spacing-3xl) 0;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.articles-cta {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.article-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-lg);
}

.article-card-image {
    height: 160px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.article-card-content {
    padding: var(--spacing-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-card-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(201, 168, 108, 0.1);
    color: var(--primary-dark);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    width: fit-content;
}

.article-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.article-card p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
    margin-bottom: var(--spacing-md);
}

.article-card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: gap var(--transition-fast);
}

.article-card-link:hover {
    gap: var(--spacing-sm);
}

.view-all-link {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.view-all-link a {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--surface);
    border: 2px solid var(--primary);
    color: var(--primary);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.view-all-link a:hover {
    background: var(--primary);
    color: var(--surface);
}

/* ============================================
   Blog Index Page
   ============================================ */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.blog-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    border-color: var(--primary);
    box-shadow: 0 10px 30px var(--shadow);
}

.blog-card-header {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(201, 168, 108, 0.1) 0%, rgba(201, 168, 108, 0.05) 100%);
    border-bottom: 1px solid var(--border);
}

.blog-card-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary);
    color: var(--surface);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.blog-card-header h2 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
}

.blog-card-header h2 a {
    transition: color var(--transition-fast);
}

.blog-card-header h2 a:hover {
    color: var(--primary);
}

.blog-card-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-card-body p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    flex: 1;
    margin-bottom: var(--spacing-md);
}

.blog-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-xs);
    color: var(--text-light);
}

.read-more {
    color: var(--primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.read-more:hover {
    text-decoration: underline;
}

/* ============================================
   Blog Article Page
   ============================================ */
.blog-article {
    background: var(--surface);
}

.article-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border);
}

.article-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary);
    color: var(--surface);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.article-header h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.article-meta .date::before {
    content: '📅 ';
}

.article-meta .read-time::before {
    content: '⏱ ';
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
}

.article-content .lead {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    line-height: 1.9;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(201, 168, 108, 0.1) 0%, rgba(201, 168, 108, 0.05) 100%);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
}

.article-content h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--spacing-2xl) 0 var(--spacing-lg);
}

.article-content p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: var(--spacing-lg);
}

.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.article-content a:hover {
    color: var(--primary-dark);
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.article-content li {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.article-content ul li::marker {
    color: var(--primary);
}

.article-footer {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.article-footer .disclaimer {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    font-style: italic;
    text-align: center;
}

/* ============================================
   Contact Form
   ============================================ */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-info h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.contact-info > p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-2xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(201, 168, 108, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.contact-item h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

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

.contact-form-wrapper {
    background: var(--surface);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px var(--shadow);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: all var(--transition-fast);
    background: var(--background);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(201, 168, 108, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.submit-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gradient-primary);
    color: var(--surface);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(201, 168, 108, 0.3);
}

/* ============================================
   Tools / Assessment Form
   ============================================ */
.tool-section {
    max-width: 800px;
    margin: 0 auto;
}

.tool-intro {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    padding: var(--spacing-2xl);
    background: linear-gradient(135deg, rgba(201, 168, 108, 0.08) 0%, rgba(201, 168, 108, 0.02) 100%);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(201, 168, 108, 0.15);
}

.tool-intro h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.tool-intro p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.tool-intro p:last-child {
    margin-bottom: 0;
}

.tool-wrapper {
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl) var(--spacing-3xl);
    border: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.skin-assessment-form h3 {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.skin-assessment-form .form-group {
    margin-bottom: var(--spacing-2xl);
}

.skin-assessment-form .form-group > label {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    display: block;
}

.skin-assessment-form .radio-group,
.skin-assessment-form .checkbox-group {
    display: flex !important;
    flex-direction: column !important;
    gap: 12px !important;
}

.skin-assessment-form label.radio-option,
.skin-assessment-form label.checkbox-option {
    display: flex !important;
    align-items: center !important;
    gap: 16px !important;
    padding: 18px 24px !important;
    background: #fafaf8 !important;
    border: 2px solid #e8e5e0 !important;
    border-radius: 12px !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    margin: 0 !important;
}

.skin-assessment-form label.radio-option:hover,
.skin-assessment-form label.checkbox-option:hover {
    border-color: #c9a86c !important;
    background: rgba(201, 168, 108, 0.08) !important;
}

.skin-assessment-form .radio-option input[type="radio"],
.skin-assessment-form .checkbox-option input[type="checkbox"] {
    width: 22px !important;
    height: 22px !important;
    accent-color: #c9a86c !important;
    cursor: pointer !important;
    flex-shrink: 0 !important;
    margin: 0 !important;
}

.skin-assessment-form .radio-option span,
.skin-assessment-form .checkbox-option span {
    font-size: 1rem !important;
    color: #2d3436 !important;
    font-weight: 400 !important;
}

.skin-assessment-form label.radio-option:has(input:checked),
.skin-assessment-form label.checkbox-option:has(input:checked) {
    border-color: #c9a86c !important;
    background: rgba(201, 168, 108, 0.12) !important;
    box-shadow: 0 2px 8px rgba(201, 168, 108, 0.2) !important;
}

.form-buttons {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.form-buttons .btn-secondary,
.form-buttons .btn-primary {
    flex: 1;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
}

.skin-assessment-form > .form-step > .btn-primary {
    width: 100%;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md) var(--spacing-xl);
}

.tool-guide {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
    background: var(--surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
}

.tool-guide h2 {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
}

.tool-guide .guide-content {
    color: var(--text-secondary);
    line-height: 1.8;
}

.tool-guide .guide-content p {
    margin-bottom: var(--spacing-lg);
}

.tool-guide .feature-list {
    margin: var(--spacing-xl) 0;
    padding-left: 0;
    list-style: none;
    display: grid;
    gap: var(--spacing-md);
}

.tool-guide .feature-list li {
    padding: var(--spacing-md) var(--spacing-lg);
    padding-left: calc(var(--spacing-lg) + var(--spacing-xl));
    position: relative;
    color: var(--text-secondary);
    background: var(--surface-alt);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.tool-guide .feature-list li::before {
    content: '✓';
    position: absolute;
    left: var(--spacing-lg);
    color: var(--primary);
    font-weight: bold;
}

.assessment-form {
    background: var(--surface);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px var(--shadow);
}

.form-step {
    display: none;
}

.form-step.active {
    display: block;
}

.step-indicator {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.step-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border);
    transition: all var(--transition-fast);
}

.step-dot.active {
    background: var(--primary);
    transform: scale(1.2);
}

.step-dot.completed {
    background: var(--primary-dark);
}

.question-group {
    margin-bottom: var(--spacing-xl);
}

.question-group h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.option-card {
    padding: var(--spacing-lg);
    background: var(--background);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.option-card:hover {
    border-color: var(--primary);
}

.option-card.selected {
    border-color: var(--primary);
    background: rgba(201, 168, 108, 0.1);
}

.option-card input {
    display: none;
}

.option-icon {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.option-card span:last-child {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.form-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.nav-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-full);
    font-size: var(--font-size-base);
    font-weight: 600;
    transition: all var(--transition-base);
    cursor: pointer;
}

.nav-btn.prev {
    background: transparent;
    border: 2px solid var(--border);
    color: var(--text-secondary);
}

.nav-btn.prev:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

.nav-btn.next {
    background: var(--gradient-primary);
    border: none;
    color: var(--surface);
}

.nav-btn.next:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(201, 168, 108, 0.3);
}

.result-section {
    text-align: center;
    padding: var(--spacing-2xl);
}

.result-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
}

.result-section h3 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.result-section p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.result-score {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gradient-primary);
    color: var(--surface);
    font-size: var(--font-size-xl);
    font-weight: 700;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-xl);
}

.restart-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
}

.restart-btn:hover {
    background: var(--primary);
    color: var(--surface);
}

/* ============================================
   About Page
   ============================================ */
.about-page-section {
    margin-bottom: var(--spacing-3xl);
}

.about-page-section h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.about-page-section p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: var(--spacing-md);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.value-card {
    padding: var(--spacing-xl);
    background: var(--surface);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

.value-card:hover {
    border-color: var(--primary);
    box-shadow: 0 10px 30px var(--shadow);
}

.value-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.value-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.value-card p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* ============================================
   Legal Pages (Privacy, Terms)
   ============================================ */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--spacing-2xl) 0 var(--spacing-lg);
}

.legal-content h2:first-child {
    margin-top: 0;
}

.legal-content p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: var(--spacing-md);
}

.legal-content ul {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.legal-content li {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
    list-style-type: disc;
}

.last-updated {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    font-style: italic;
    margin-bottom: var(--spacing-2xl);
    text-align: center;
}

/* ============================================
   Assessment Result Styles
   ============================================ */
.assessment-result {
    background: linear-gradient(135deg, #fefefe 0%, #f8f6f3 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    border: 1px solid var(--border);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.result-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.result-header .result-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.result-header h3 {
    font-size: var(--font-size-2xl);
    color: var(--text-primary);
    margin: 0;
}

.result-cards {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.result-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

.result-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.result-card-icon {
    font-size: 2.5rem;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(201, 168, 108, 0.15) 0%, rgba(201, 168, 108, 0.05) 100%);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.result-card-content {
    flex: 1;
}

.result-card-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.skin-age-display {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
}

.skin-age-display .age {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1;
}

.skin-age-display .unit {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

.age-difference {
    font-size: var(--font-size-base);
    font-weight: 600;
}

.age-difference .warning {
    color: #e74c3c;
}

.age-difference .good {
    color: #27ae60;
}

.age-difference .normal {
    color: var(--primary-dark);
}

.recommendation-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-lg);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
}

.recommendation-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.recommendation-icon.warning {
    background: rgba(231, 76, 60, 0.1);
}

.recommendation-icon.moderate {
    background: rgba(241, 196, 15, 0.1);
}

.recommendation-icon.good {
    background: rgba(39, 174, 96, 0.1);
}

.recommendation-content {
    flex: 1;
}

.recommendation-content h4 {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.recommendation-content p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.recommendation-tips {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.recommendation-tips li {
    background: rgba(201, 168, 108, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--primary-dark);
}

.result-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.result-actions .btn-secondary,
.result-actions .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
}

.result-disclaimer {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.02);
    border-radius: var(--radius-md);
    margin: 0;
}

/* ============================================
   Blog Card Improved Styles
   ============================================ */
.blog-image {
    height: 180px;
    background: linear-gradient(135deg, #f8f6f3 0%, #f0ebe3 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.blog-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(201, 168, 108, 0.1) 0%, rgba(201, 168, 108, 0.05) 100%);
}

.blog-placeholder {
    font-size: 3.5rem;
    position: relative;
    z-index: 1;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    border-radius: 50%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.blog-content {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.blog-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--surface);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    width: fit-content;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.blog-content h2 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: var(--spacing-sm);
}

.blog-content h2 a {
    transition: color var(--transition-fast);
}

.blog-content h2 a:hover {
    color: var(--primary);
}

.blog-content > p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    flex: 1;
    margin-bottom: var(--spacing-md);
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
    font-size: var(--font-size-xs);
    color: var(--text-light);
}

.blog-meta .date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.blog-meta .read-time {
    background: rgba(201, 168, 108, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    color: var(--primary-dark);
    font-weight: 500;
}

.blog-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.blog-card:hover {
    border-color: var(--primary);
    box-shadow: 0 15px 40px rgba(201, 168, 108, 0.15);
    transform: translateY(-6px);
}

.blog-card:hover .blog-placeholder {
    transform: scale(1.1);
    transition: transform var(--transition-base);
}

/* ============================================
   Responsive Styles - New Components
   ============================================ */
@media (max-width: 1024px) {
    .articles-grid,
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-section {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .breadcrumbs {
        margin-top: 56px;
    }

    .articles-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

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

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

    .article-header h1 {
        font-size: var(--font-size-2xl);
    }

    .article-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .result-cards {
        grid-template-columns: 1fr;
    }

    .result-card {
        flex-direction: column;
        text-align: center;
    }

    .recommendation-card {
        flex-direction: column;
        text-align: center;
    }

    .recommendation-tips {
        justify-content: center;
    }

    .result-actions {
        flex-direction: column;
    }

    .result-actions .btn-secondary,
    .result-actions .btn-primary {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .page-content {
        padding: var(--spacing-2xl) 0;
    }

    .assessment-form {
        padding: var(--spacing-lg);
    }

    .contact-form-wrapper {
        padding: var(--spacing-lg);
    }

    .form-navigation {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .nav-btn {
        width: 100%;
        text-align: center;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .navbar,
    .scroll-indicator,
    .back-to-top,
    .floating-shapes {
        display: none !important;
    }

    .hero {
        min-height: auto;
        padding: var(--spacing-2xl) 0;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

    body {
        color: #000;
        background: #fff;
    }
}