/* ============================================
   Good Step Brand Website - CSS Styles
   Sporty, Impactful Design
   ============================================ */

/* CSS Variables */
:root {
    --primary: #0066CC;
    --primary-dark: #0052a3;
    --accent: #00CED1;
    --accent-light: #00e5e8;
    --success: #00C853;
    --danger: #FF6B6B;
    --dark: #1a1a1a;
    --dark-gray: #2a2a2a;
    --medium-gray: #666;
    --light-gray: #999;
    --bg-light: #f5f5f7;
    --white: #ffffff;
    --gold: #FFD700;
    --text-dark: #333;

    --font-primary: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.15);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.2);
    --shadow-glow: 0 0 40px rgba(0, 206, 209, 0.3);

    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    --nav-height: 80px;
    --promo-height: 40px;
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--white);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Accessibility - Focus Visible */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
    outline: none;
}

.hero-dot:focus-visible,
.hero-arrow:focus-visible {
    outline: 2px solid var(--white);
    outline-offset: 3px;
}

.slider-dot:focus-visible,
.cop-dot:focus-visible,
.review-dot:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
}

body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
}

.section-label {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 16px;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    margin-bottom: 24px;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 20px rgba(0, 102, 204, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 102, 204, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--white);
}

.btn-purchase {
    background: linear-gradient(135deg, var(--accent), var(--primary));
    color: var(--white);
    font-size: 1.125rem;
    padding: 20px 48px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-glow);
    animation: purchasePulse 2s ease-in-out infinite;
}

.btn-purchase:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 60px rgba(0, 206, 209, 0.5);
    animation-play-state: paused;
}

@keyframes purchasePulse {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 206, 209, 0.3); }
    50% { box-shadow: 0 0 40px rgba(0, 206, 209, 0.6), 0 0 80px rgba(0, 206, 209, 0.2); }
}

.purchase-promo-date {
    color: var(--accent);
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 16px;
    padding: 8px 16px;
    background: rgba(0, 206, 209, 0.1);
    border-radius: 8px;
    border: 1px dashed rgba(0, 206, 209, 0.3);
}

/* Navigation */
.navbar {
    position: fixed;
    top: var(--promo-height);
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(26, 26, 26, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

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

.logo-icon img {
    display: block;
    border-radius: 6px;
    object-fit: contain;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-menu li {
    display: flex;
    align-items: center;
}

.nav-menu a {
    display: inline-flex;
    align-items: center;
    color: rgba(255,255,255,0.8);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.nav-menu a:hover {
    color: var(--white);
}

.nav-menu .nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    padding: 10px 24px;
    border-radius: 50px;
    color: var(--white);
    line-height: 1;
}

.nav-menu .nav-cta:hover {
    background: var(--primary-dark);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px 9px;
    z-index: 100;
    flex-shrink: 0;
}

.mobile-menu-btn span {
    width: 22px;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0a0a0a;
    overflow: hidden;
}

/* Hero Background Slides */
.hero-slides {
    position: absolute;
    inset: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1.2s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.05);
    transition: transform 6s ease-out;
    filter: brightness(0.7);
}

.hero-slide.active img {
    transform: scale(1);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(0, 0, 0, 0.4) 0%,
        rgba(0, 0, 0, 0.2) 40%,
        rgba(0, 0, 0, 0.3) 70%,
        rgba(0, 0, 0, 0.7) 100%
    );
    z-index: 1;
}

/* Hero Content - Centered */
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1000px;
    margin: 0 auto;
    padding: calc(var(--nav-height) + var(--promo-height) + 40px) 24px 120px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

/* Text Slides */
.hero-text-slides {
    position: relative;
    width: 100%;
    min-height: 280px;
    margin-bottom: 40px;
}

.hero-text-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.hero-text-slide.active {
    position: relative;
    opacity: 1;
    visibility: visible;
}

.hero-text-slide .hero-subtitle {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease 0.3s, transform 0.6s ease 0.3s;
}

.hero-text-slide .hero-title {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease 0.5s, transform 0.6s ease 0.5s;
}

.hero-text-slide .hero-description {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease 0.7s, transform 0.6s ease 0.7s;
}

.hero-text-slide.active .hero-subtitle,
.hero-text-slide.active .hero-title,
.hero-text-slide.active .hero-description {
    opacity: 1;
    transform: translateY(0);
}

.hero-subtitle {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 20px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 24px;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.4);
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--accent), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    margin-bottom: 0;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 24px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease 0.9s, transform 0.6s ease 0.9s;
}

.hero-text-slide.active .hero-cta {
    opacity: 1;
    transform: translateY(0);
}

/* Hero Arrow Navigation */
.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    backdrop-filter: blur(4px);
}

.hero-arrow:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

.hero-prev {
    left: 30px;
}

.hero-next {
    right: 30px;
}

/* Hero Dots */
.hero-dots {
    position: absolute;
    bottom: 90px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.hero-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    padding: 0;
}

.hero-dot:hover {
    border-color: white;
    background: rgba(255, 255, 255, 0.3);
}

.hero-dot.active {
    background: var(--accent);
    border-color: var(--accent);
    transform: scale(1.2);
}

/* Hero Progress Bar */
.hero-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 10;
}

.hero-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--primary));
    width: 0%;
    transition: width 0.1s linear;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

.insole-svg {
    width: 250px;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.5));
}

.scroll-indicator {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.5);
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    z-index: 10;
}

.scroll-arrow {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 12px;
    position: relative;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--accent);
    border-radius: 2px;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { top: 8px; opacity: 1; }
    50% { top: 20px; opacity: 0.5; }
}

/* Problem Section */
.problem {
    padding: 120px 0;
    background:
        linear-gradient(rgba(245, 245, 247, 0.90), rgba(245, 245, 247, 0.92)),
        url('https://images.unsplash.com/photo-1571019614242-c5c5dee9f50b?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.problem .section-subtitle {
    color: var(--text-dark);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    margin-bottom: 80px;
}

.problem-card {
    background: var(--white);
    padding: 32px 24px;
    border-radius: 20px;
    text-align: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.problem-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--dark);
}

.problem-card h3 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.problem-card p {
    font-size: 0.875rem;
    color: var(--medium-gray);
}

/* CoP Section - Enhanced */
.cop-section {
    background: var(--white);
    padding: 60px;
    border-radius: 30px;
    box-shadow: var(--shadow-md);
}

.cop-header {
    text-align: center;
    margin-bottom: 50px;
}

.cop-main-title {
    font-size: 2rem;
    margin-bottom: 12px;
}

.cop-subtitle {
    font-size: 1rem;
    color: var(--accent);
    font-weight: 600;
    letter-spacing: 1px;
}

/* CoP Explanation */
.cop-explanation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    margin-bottom: 60px;
}

.cop-image-area {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
}

.cop-photo {
    width: 100%;
    height: 350px;
    object-fit: cover;
}

.cop-image-area .image-slider {
    height: 350px;
}

.cop-bottom-image .image-slider {
    height: 300px;
}

.solution-hero-image .image-slider {
    height: 500px;
}

.solution-video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 24px;
}

.tech-hero-image .image-slider {
    height: auto;
}

.cop-image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
}

.cop-image-caption span {
    color: var(--white);
    font-weight: 600;
}

.cop-text-area h4 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--dark);
}

.cop-text-area > p {
    font-size: 1.0625rem;
    color: var(--medium-gray);
    line-height: 1.8;
    margin-bottom: 24px;
}

.cop-path-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.path-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px;
    border-radius: 12px;
}

.path-item.correct {
    background: rgba(0, 200, 83, 0.1);
    border-left: 4px solid var(--success);
}

.path-item.wrong {
    background: rgba(255, 107, 107, 0.1);
    border-left: 4px solid var(--danger);
}

.path-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.path-item.correct .path-icon {
    background: var(--success);
    color: white;
}

.path-item.wrong .path-icon {
    background: var(--danger);
    color: white;
}

.path-item strong {
    display: block;
    margin-bottom: 4px;
}

.path-item p {
    font-size: 0.9375rem;
    color: var(--medium-gray);
    margin: 0;
}

/* CoP Comparison */
.cop-comparison {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin-bottom: 60px;
    padding: 40px;
    background: var(--bg-light);
    border-radius: 24px;
}

.cop-dots {
    display: none;
}

.cop-compare-item {
    text-align: center;
    flex: 1;
    max-width: 280px;
}

.compare-label {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 20px;
}

.wrong-label {
    background: rgba(255, 107, 107, 0.15);
    color: var(--danger);
}

.correct-label {
    background: rgba(0, 200, 83, 0.15);
    color: var(--success);
}

.cop-visual-box {
    background: var(--white);
    padding: 20px;
    border-radius: 16px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.cop-visual-box img {
    width: 100%;
    height: auto;
    border-radius: 16px;
}

.cop-visual-box svg {
    width: 100%;
    max-width: 160px;
    height: auto;
}

.compare-desc p {
    font-size: 1rem;
    margin-bottom: 12px;
}

.compare-desc ul {
    text-align: left;
    padding-left: 20px;
}

.compare-desc li {
    font-size: 0.875rem;
    color: var(--medium-gray);
    margin-bottom: 6px;
    list-style: disc;
}

.cop-compare-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.cop-compare-arrow svg {
    width: 60px;
    height: 60px;
}

.cop-compare-arrow span {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent);
}

/* CoP Statistics */
.cop-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 50px;
}

.cop-stat-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--bg-light);
    border-radius: 16px;
    transition: all var(--transition-normal);
}

.cop-stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.cop-stat-item .stat-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
}

.cop-stat-item .stat-number {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 8px;
}

.cop-stat-item .stat-desc {
    font-size: 0.875rem;
    color: var(--medium-gray);
}

.cop-bottom-image {
    border-radius: 20px;
    overflow: hidden;
}

.cop-bottom-image .content-image {
    height: 300px;
}

/* Image Slider */
.image-slider {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.image-slider .slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.image-slider .slide.active {
    opacity: 1;
}

.image-slider .slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
    z-index: 10;
}

.slider-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    border: 1.5px solid rgba(255, 255, 255, 0.7);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    padding: 0;
}

.slider-dot:hover {
    background: rgba(255, 255, 255, 0.5);
}

.slider-dot.active {
    background: var(--accent);
    border-color: var(--accent);
}

/* Hero Slider */
/* (hero-bg removed - now using hero-slides) */

/* CoP Slider */
.cop-slider {
    height: 350px;
    border-radius: 20px;
}

.cop-slider .slide img {
    border-radius: 20px;
}

/* Wide Slider (CoP bottom) */
.wide-slider {
    height: 300px;
    border-radius: 20px;
}

.wide-slider .slide img {
    border-radius: 20px;
}

/* Solution Slider */
.solution-slider {
    height: 500px;
    border-radius: 24px;
}

.solution-slider .slide img {
    border-radius: 24px;
}

/* Tech Slider — PC: 3열 그리드 / 모바일: 슬라이더 */
.tech-slider {
    height: auto;
    border-radius: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
}

.tech-slider .slide {
    position: relative;
    opacity: 1;
    width: 100%;
    height: auto;
    transition: none;
}

.tech-slider .slide img {
    border-radius: 16px;
    width: 100%;
    height: 620px;
    object-fit: cover;
}

.tech-slider .slider-dots {
    display: none;
}

/* Benefits Bottom Slider */
.benefits-bottom-image {
    margin-top: 60px;
    border-radius: 24px;
    overflow: hidden;
}

.benefits-slider {
    height: 350px;
    border-radius: 24px;
}

.benefits-slider .slide img {
    border-radius: 24px;
}

/* Content Images */
.content-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
}

.content-image-small {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 16px;
    transition: transform var(--transition-normal);
}

.content-image-small:hover {
    transform: scale(1.05);
}

/* Solution Layout — PC: 좌 1/3 영상 + 우 2/3 콘텐츠 */
.solution-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    align-items: start;
}

.solution-hero-image {
    position: relative;
    overflow: hidden;
    border-radius: 24px;
}

.solution-hero-image .content-image {
    height: 100%;
}

.solution-right {
    display: flex;
    flex-direction: column;
    gap: 40px;
    justify-content: center;
}

/* Solution Detail Section (섹션 2) */
.solution-detail-section {
    padding: 100px 0;
    background: linear-gradient(180deg, rgba(26, 26, 36, 0.98) 0%, rgba(20, 20, 30, 1) 100%);
    color: var(--white);
}

.solution-detail-header {
    text-align: left;
    margin-bottom: 24px;
    padding-left: 50px;
}

.solution-detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.solution-detail-image {
    border-radius: 24px;
    overflow: hidden;
}

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

.solution-detail-content .section-subtitle {
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.3;
}

.solution-detail-desc {
    font-size: 1.0625rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
}

.solution-detail-section .solution-stats {
    flex-direction: column;
    gap: 16px;
}

.solution-detail-section .stat {
    background: rgba(255,255,255,0.05);
    padding: 16px 20px;
    border-radius: 12px;
    border-left: 3px solid var(--accent);
}

.stat-desc {
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.5);
    margin-top: 4px;
}

.solution-detail-section .btn-outline {
    display: inline-block;
    padding: 14px 32px;
    border: 2px solid var(--accent);
    color: var(--accent);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-normal);
    align-self: flex-start;
}

.solution-detail-section .btn-outline:hover {
    background: var(--accent);
    color: var(--dark);
}

/* Research Evidence Section */
.research-evidence {
    padding: 120px 0;
    scroll-margin-top: calc(var(--nav-height) + var(--promo-height) + 24px);
    background:
        linear-gradient(180deg, #ffffff 0%, #f5f8fb 100%);
}

.research-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.82fr);
    gap: 64px;
    align-items: center;
    margin-bottom: 48px;
}

.research-copy .section-title {
    margin-bottom: 20px;
}

.research-lead {
    font-size: 1.125rem;
    color: var(--medium-gray);
    line-height: 1.85;
    margin-bottom: 24px;
}

.research-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 28px;
}

.research-meta span {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 8px 12px;
    background: var(--white);
    border: 1px solid rgba(0, 102, 204, 0.12);
    border-radius: 8px;
    color: var(--text-dark);
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.research-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.btn-outline-dark {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    box-shadow: none;
}

.btn-outline-dark:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.paper-preview {
    position: relative;
    display: block;
    padding: 12px;
    background: var(--white);
    border: 1px solid rgba(0, 102, 204, 0.12);
    border-radius: 8px;
    box-shadow: 0 24px 70px rgba(0, 46, 92, 0.16);
    transition: all var(--transition-normal);
}

.paper-preview:hover {
    transform: translateY(-6px);
    box-shadow: 0 28px 84px rgba(0, 46, 92, 0.22);
}

.paper-preview img {
    display: block;
    width: 100%;
    max-height: 560px;
    object-fit: cover;
    object-position: top;
    border-radius: 6px;
}

.paper-preview-badge {
    position: absolute;
    top: 24px;
    right: 24px;
    padding: 8px 12px;
    border-radius: 8px;
    background: rgba(26, 26, 26, 0.86);
    color: var(--white);
    font-size: 0.8125rem;
    font-weight: 700;
}

.research-results {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 28px;
}

.research-result-card {
    min-height: 220px;
    padding: 24px;
    background: var(--white);
    border-radius: 8px;
    border: 1px solid rgba(0, 102, 204, 0.1);
    border-top: 4px solid var(--primary);
    box-shadow: var(--shadow-sm);
}

.result-kicker {
    display: block;
    margin-bottom: 12px;
    color: var(--primary);
    font-size: 0.8125rem;
    font-weight: 800;
    letter-spacing: 1px;
}

.research-result-card strong {
    display: block;
    margin-bottom: 10px;
    color: var(--dark);
    font-size: 2.25rem;
    font-weight: 900;
    line-height: 1;
}

.research-result-card p {
    color: var(--medium-gray);
    font-size: 0.9375rem;
    line-height: 1.65;
    margin-bottom: 16px;
}

.result-compare {
    display: inline-flex;
    padding: 6px 10px;
    border-radius: 8px;
    background: rgba(0, 206, 209, 0.12);
    color: var(--primary-dark);
    font-size: 0.8125rem;
    font-weight: 700;
}

.research-linkage {
    padding: 40px;
    background: linear-gradient(135deg, #111827 0%, #172033 100%);
    color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
}

.research-linkage h3 {
    margin-bottom: 24px;
    font-size: 1.5rem;
}

.linkage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 24px;
}

.linkage-item {
    padding: 24px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.linkage-item span {
    display: block;
    margin-bottom: 12px;
    color: var(--accent);
    font-size: 0.8125rem;
    font-weight: 900;
    letter-spacing: 2px;
}

.linkage-item strong {
    display: block;
    margin-bottom: 10px;
    color: var(--white);
    font-size: 1.0625rem;
}

.linkage-item p {
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.research-note {
    color: rgba(255, 255, 255, 0.62);
    font-size: 0.875rem;
    line-height: 1.7;
}

.image-overlay-text {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 40px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
}

.image-overlay-text span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.benefits-hero-image {
    margin-bottom: 60px;
    border-radius: 24px;
    overflow: hidden;
}

.benefits-top-slider {
    height: 400px;
    border-radius: 24px;
}

.benefits-top-slider .slide img {
    border-radius: 24px;
}

.tech-hero-image {
    margin-bottom: 60px;
    border-radius: 24px;
    overflow: hidden;
}

.howto-images {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.howto-image-item {
    text-align: center;
    overflow: hidden;
    border-radius: 16px;
}

.howto-image-item span {
    display: block;
    margin-top: 12px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--medium-gray);
}

/* Solution Section */
.solution {
    padding: 120px 0;
    background:
        linear-gradient(135deg, rgba(26, 26, 26, 0.92) 0%, rgba(26, 26, 46, 0.95) 100%),
        url('https://images.unsplash.com/photo-1476480862126-209bfaa8edc8?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--white);
}

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.solution-label {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--accent);
    margin-bottom: 16px;
}

.solution-description {
    font-size: 1.5rem;
    line-height: 1.6;
    margin-bottom: 24px;
    color: rgba(255,255,255,0.9);
}

.solution-detail {
    font-size: 1rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.8;
    margin-bottom: 40px;
}

.solution-detail strong {
    color: var(--accent);
}

.solution-stats {
    display: flex;
    gap: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 900;
    color: var(--accent);
}

.stat-label {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
}

.product-showcase {
    display: flex;
    justify-content: center;
}

.insole-large {
    width: 100%;
    max-width: 400px;
    filter: drop-shadow(0 30px 60px rgba(0, 206, 209, 0.3));
    animation: floatSlow 8s ease-in-out infinite;
}

.solution-product-slider {
    max-width: 450px;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 4/3;
    box-shadow: 0 20px 60px rgba(0, 206, 209, 0.3);
}

.solution-product-slider .slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@keyframes floatSlow {
    0%, 100% { transform: translateY(0) rotate(-3deg); }
    50% { transform: translateY(-15px) rotate(3deg); }
}

/* Technology Section */
.technology {
    padding: 120px 0;
    background: var(--white);
}

.tech-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-bottom: 80px;
}

.tech-card {
    background: var(--bg-light);
    padding: 48px;
    border-radius: 24px;
    transition: all var(--transition-normal);
}

.tech-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.tech-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
}

.tech-card h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.tech-subtitle {
    font-size: 0.875rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 16px;
}

.tech-card p:last-child {
    color: var(--medium-gray);
    line-height: 1.7;
}

/* Layer Section */
.layer-section {
    background: linear-gradient(135deg, var(--dark) 0%, #1a1a2e 100%);
    padding: 80px;
    border-radius: 30px;
    color: var(--white);
}

.layer-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 60px;
}

.layer-visual {
    display: flex;
    justify-content: center;
}

.layer-stack {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
    max-width: 800px;
}

.layer {
    display: flex;
    align-items: center;
    padding: 30px 40px;
    border-radius: 16px;
    transition: all var(--transition-normal);
}

.layer:hover {
    transform: translateX(10px);
}

.layer-top {
    background: linear-gradient(135deg, #4a9eff 0%, #0066CC 100%);
}

.layer-middle {
    background: linear-gradient(135deg, #00e5e8 0%, #00CED1 100%);
    margin-left: 30px;
}

.layer-base {
    background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    border: 1px solid #333;
    margin-left: 60px;
}

.layer-info h4 {
    font-size: 1.25rem;
    margin-bottom: 4px;
}

.layer-material {
    font-size: 0.875rem;
    font-weight: 600;
    color: rgba(255,255,255,0.7);
    margin-bottom: 8px;
}

.layer-info p:last-child {
    font-size: 0.9375rem;
    color: rgba(255,255,255,0.8);
}

/* Benefits Section */
.benefits {
    padding: 120px 0;
    background:
        linear-gradient(rgba(245, 245, 247, 0.92), rgba(245, 245, 247, 0.92)),
        url('https://images.unsplash.com/photo-1483721310020-03333e577078?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    margin-bottom: 80px;
}

.benefit-card {
    background: var(--white);
    padding: 40px 24px;
    border-radius: 20px;
    text-align: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
}

.benefit-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 8px 24px rgba(0, 206, 209, 0.2);
}

.benefit-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--primary);
}

.benefit-card h3 {
    font-size: 1rem;
    margin-bottom: 8px;
    line-height: 1.4;
}

.benefit-en {
    font-size: 0.75rem;
    color: var(--light-gray);
}

.benefit-desc {
    font-size: 0.8125rem;
    color: var(--medium-gray);
    line-height: 1.5;
    margin-top: 10px;
}

/* Comparison Table */
.comparison {
    background: var(--white);
    border-radius: 24px;
    padding: 60px;
    box-shadow: var(--shadow-md);
}

.comparison-title {
    font-size: 1.75rem;
    text-align: center;
    margin-bottom: 40px;
}

.comparison-table {
    border-radius: 16px;
    overflow: hidden;
}

.comparison-header,
.comparison-row {
    display: grid;
    grid-template-columns: 1fr 2fr 2fr;
}

.comparison-header {
    background: var(--dark);
    color: var(--white);
    font-weight: 700;
}

.comparison-header .highlight-col {
    background: linear-gradient(135deg, var(--primary), var(--accent));
}

.comparison-row {
    border-bottom: 1px solid #eee;
}

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

.comp-col {
    padding: 20px 24px;
}

.comparison-row .comp-col:first-child {
    background: var(--bg-light);
    font-weight: 600;
}

.comparison-row .highlight-col {
    background: rgba(0, 102, 204, 0.05);
    color: var(--primary);
}

.recommended-badge {
    display: inline-block;
    background: var(--gold);
    color: #1a1a1a;
    font-size: 0.625rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-left: 8px;
    vertical-align: middle;
}

.comp-icon {
    margin-right: 6px;
    font-weight: bold;
}

.comp-check {
    color: #00C853;
}

.comp-cross {
    color: #bbb;
}

.price-highlight {
    font-size: 1.25rem;
    color: var(--primary);
}

.comparison-subtext {
    text-align: center;
    font-size: 0.875rem;
    color: var(--accent);
    margin-top: 16px;
    font-weight: 500;
}

/* How to Use Section */
.howto {
    padding: 120px 0;
    background:
        linear-gradient(rgba(255, 255, 255, 0.97), rgba(255, 255, 255, 0.97)),
        url('https://images.unsplash.com/photo-1538805060514-97d9cc17730c?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.steps-dots {
    display: none;
}

.step-card {
    background: var(--bg-light);
    padding: 40px 32px;
    border-radius: 24px;
    text-align: center;
    flex: 1;
    min-width: 250px;
    max-width: 300px;
    transition: all var(--transition-normal);
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 900;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    animation: stepPulse 2s ease-in-out infinite;
}

.step-card:nth-child(3) .step-number { animation-delay: 0.2s; }
.step-card:nth-child(5) .step-number { animation-delay: 0.4s; }

@keyframes stepPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0, 102, 204, 0.4); }
    50% { box-shadow: 0 0 0 10px rgba(0, 102, 204, 0); }
}

.step-visual {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
}

.step-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.step-card p {
    color: var(--medium-gray);
    font-size: 0.9375rem;
}

.step-arrow {
    flex-shrink: 0;
}

.step-arrow svg {
    width: 40px;
    height: 40px;
}

.steps-note {
    text-align: center;
    font-size: 1rem;
    color: var(--medium-gray);
    margin-bottom: 40px;
}

.cop-awareness-tip {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.05), rgba(0, 206, 209, 0.08));
    border-left: 4px solid var(--accent);
    border-radius: 12px;
    padding: 24px 32px;
    margin-bottom: 80px;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.cop-awareness-tip strong {
    color: var(--accent);
    font-size: 1rem;
    display: block;
    margin-bottom: 8px;
}

.cop-awareness-tip p {
    color: var(--medium-gray);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin: 0;
}

.usage-warning {
    color: var(--danger);
    font-size: 0.8125rem;
    margin-top: 8px;
}

.usage-warning::before {
    content: "⚠ ";
}

/* Usage Guide */
.usage-guide {
    background: var(--bg-light);
    padding: 60px;
    border-radius: 30px;
}

.usage-guide h3 {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 40px;
}

.usage-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.usage-card {
    background: var(--white);
    padding: 32px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.usage-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    color: var(--primary);
}

.usage-card h4 {
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.usage-card p {
    font-size: 0.9375rem;
    color: var(--medium-gray);
}

/* Purchase Section */
.purchase {
    padding: 120px 0;
    background:
        linear-gradient(135deg, rgba(26, 26, 26, 0.93) 0%, rgba(26, 26, 46, 0.95) 100%),
        url('https://images.unsplash.com/photo-1594882645126-14020914d58d?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--white);
}

.purchase-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.product-display {
    display: flex;
    justify-content: center;
}

.product-main {
    width: 100%;
    max-width: 350px;
    filter: drop-shadow(0 30px 60px rgba(0, 206, 209, 0.4));
    animation: floatSlow 8s ease-in-out infinite;
}

.purchase-product-slider {
    max-width: 450px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4/3;
    box-shadow: 0 20px 60px rgba(0, 206, 209, 0.4);
}

.purchase-product-slider .slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-label {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 8px;
}

.product-name {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 8px;
}

.product-subtitle {
    font-size: 1rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 32px;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 32px;
}

.feature-tag {
    background: rgba(0, 206, 209, 0.2);
    color: var(--accent);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
}

.product-specs {
    margin-bottom: 32px;
}

.spec-row {
    display: flex;
    padding: 16px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.spec-label {
    width: 100px;
    color: rgba(255,255,255,0.5);
    flex-shrink: 0;
}

.spec-value {
    color: rgba(255,255,255,0.9);
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 32px;
}

.price-label {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
}

.price-value {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--accent);
}

.price-note {
    font-size: 0.875rem;
    color: var(--success);
}

.purchase-note {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.4);
    text-align: center;
    margin-top: 16px;
}

/* Trust Section */
.trust {
    padding: 120px 0;
    background: var(--bg-light);
}

.trust-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.trust-card {
    background: var(--white);
    padding: 48px 32px;
    border-radius: 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.trust-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.patent-visual,
.inventor-info,
.tech-badge {
    margin-bottom: 24px;
}

.patent-badge svg,
.inventor-badge svg,
.tech-badge svg {
    width: 100px;
    height: 100px;
    margin: 0 auto;
}

.trust-card h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
    color: var(--medium-gray);
}

.patent-number {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 8px;
}

.patent-number-badge {
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    background: rgba(0, 102, 204, 0.08);
    padding: 8px 16px;
    border-radius: 8px;
    display: inline-block;
    margin-bottom: 8px;
}

.patent-date {
    font-size: 0.875rem;
    color: var(--light-gray);
}

.inventor-info {
    text-align: center;
}

.inventor-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.inventor-en {
    font-size: 0.9375rem;
    color: var(--medium-gray);
}

.trust-icon img {
    width: 60px;
    height: auto;
    border-radius: 8px;
}

.trust-lightbox-trigger {
    display: block;
    color: inherit;
    text-decoration: none;
    cursor: pointer;
}

.trust-lightbox-trigger:hover .trust-icon img {
    transform: scale(1.05);
    transition: transform var(--transition-normal);
}

.trust-zoom-hint {
    display: block;
    font-size: 0.6875rem;
    color: var(--accent);
    margin-top: 4px;
}

/* Footer */
.footer {
    background: var(--dark);
    color: rgba(255,255,255,0.7);
    padding: 80px 0 40px;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.footer-logo .logo-icon {
    color: var(--accent);
}

.footer-tagline {
    font-size: 0.9375rem;
    color: rgba(255,255,255,0.7);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col-company ul li {
    white-space: normal;
    line-height: 1.6;
}

.footer-col h4 {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.footer-col a {
    color: rgba(255,255,255,0.6);
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-partners {
    padding: 32px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 32px;
    text-align: center;
}

.footer-partners p {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.4);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.partner-logos {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.partner {
    font-size: 0.9375rem;
    font-weight: 600;
    color: rgba(255,255,255,0.6);
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.15);
    padding: 8px 20px;
    border-radius: 30px;
    transition: all var(--transition-normal);
}

.partner:hover {
    background: rgba(255,255,255,0.12);
    border-color: var(--accent);
    color: rgba(255,255,255,0.9);
}

.footer-disclaimer {
    padding: 1rem 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 1rem;
}

.footer-disclaimer p {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.6);
    text-align: center;
    line-height: 1.6;
    margin: 0;
}

.footer-bottom {
    text-align: center;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
}

/* Product Disclaimer */
.product-disclaimer {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
    border: 1px solid #e9ecef;
}

.product-disclaimer p {
    font-size: 0.85rem;
    color: var(--medium-gray);
    line-height: 1.8;
    margin: 0;
    text-align: center;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Responsive Design - Complete Mobile Optimization
   ============================================ */

/* Large Tablets & Small Desktops (max-width: 1200px) */
@media (max-width: 1200px) {
    .problem-grid,
    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .target-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .cop-stats {
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }

    .solution-content {
        gap: 60px;
    }

    .purchase-wrapper {
        gap: 60px;
    }
}

/* Tablets (max-width: 992px) */
@media (max-width: 992px) {
    /* Section Padding Reduction */
    .problem,
    .solution,
    .research-evidence,
    .technology,
    .benefits,
    .recommendations,
    .howto,
    .purchase,
    .reviews,
    .trust,
    .faq {
        padding: 80px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    /* Hero Section */
    .hero-arrow {
        width: 44px;
        height: 44px;
    }

    .hero-prev {
        left: 16px;
    }

    .hero-next {
        right: 16px;
    }

    .hero-title {
        font-size: clamp(2rem, 5vw, 3.5rem);
    }

    .hero-description {
        font-size: 1rem;
    }

    /* Problem Section */
    .problem-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
        margin-bottom: 60px;
    }

    .problem-card {
        padding: 24px 16px;
    }

    .problem-icon {
        width: 48px;
        height: 48px;
        margin-bottom: 12px;
    }

    /* CoP Section */
    .cop-section {
        padding: 40px 24px;
    }

    .cop-explanation {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .cop-compare-item {
        max-width: 100%;
    }

    .cop-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .cop-stat-item {
        padding: 20px 16px;
    }

    .cop-stat-item .stat-number {
        font-size: 1.5rem;
    }

    /* Solution Section */
    .solution-layout {
        grid-template-columns: 1fr;
    }

    .solution-hero-image {
        margin-bottom: 40px;
    }

    .solution-detail-header {
        padding-left: 0;
    }

    .solution-detail-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .solution-detail-section {
        padding: 60px 0;
    }

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

    .solution-image {
        order: -1;
    }

    .solution-stats {
        justify-content: center;
        flex-wrap: wrap;
        gap: 24px;
    }

    .insole-large {
        max-width: 280px;
    }

    .solution-product-slider {
        max-width: 350px;
    }

    /* Research Evidence */
    .research-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .paper-preview {
        max-width: 560px;
        margin: 0 auto;
    }

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

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

    /* Technology Section */
    .tech-features {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .tech-card {
        padding: 32px 24px;
    }

    .layer-section {
        padding: 40px 24px;
    }

    .layer-title {
        font-size: 1.5rem;
        margin-bottom: 40px;
    }

    .layer {
        padding: 20px 24px;
    }

    .layer-middle,
    .layer-base {
        margin-left: 0;
    }

    /* Benefits Section */
    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
        margin-bottom: 60px;
    }

    .benefit-card {
        padding: 28px 16px;
    }

    .benefit-icon {
        width: 48px;
        height: 48px;
        margin-bottom: 12px;
    }

    .comparison {
        padding: 40px 24px;
    }

    /* Target Recommendations - Slider Mode */
    .target-slider-wrapper {
        display: flex;
        align-items: center;
        gap: 16px;
    }

    .target-slider {
        flex: 1;
        overflow: hidden;
    }

    .target-grid {
        display: flex;
        gap: 20px;
        transition: transform 0.4s ease;
    }

    .target-card {
        flex: 0 0 calc(50% - 10px);
        min-width: calc(50% - 10px);
        padding: 28px 20px;
    }

    .target-nav {
        display: flex;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        border: 2px solid var(--primary);
        background: var(--white);
        color: var(--primary);
        cursor: pointer;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        transition: all var(--transition-fast);
    }

    .target-nav:hover {
        background: var(--primary);
        color: var(--white);
    }

    .target-nav svg {
        width: 20px;
        height: 20px;
    }

    /* How to Use */
    .steps-container {
        gap: 16px;
    }

    .step-card {
        padding: 32px 24px;
        min-width: 200px;
    }

    .usage-guide {
        padding: 40px 24px;
    }

    .usage-cards {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    /* Purchase Section */
    .purchase-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .purchase-product {
        order: -1;
    }

    .product-main {
        max-width: 250px;
    }

    .purchase-product-slider {
        max-width: 350px;
    }

    /* Reviews Section */
    .reviews-stats {
        gap: 40px;
        padding: 32px 24px;
    }

    .review-stat .stat-number {
        font-size: 2.5rem;
    }

    /* Trust Section */
    .trust-content {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .trust-card {
        padding: 32px 20px;
    }

    /* Footer */
    .footer {
        padding: 60px 0 32px;
    }

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

    .footer-links {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        text-align: left;
    }

    .footer-col ul {
        gap: 8px;
    }
}

/* Small Tablets & Large Phones (max-width: 768px) */
@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
        --promo-height: 60px;
    }

    /* Navigation Mobile Menu */
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(26, 26, 26, 0.98);
        flex-direction: column;
        padding: 32px 24px;
        gap: 20px;
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        overflow-y: auto;
    }

    .nav-menu.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        display: block;
        width: 100%;
    }

    .nav-menu a {
        font-size: 1.125rem;
        padding: 12px 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        display: block;
    }

    .nav-menu .nav-cta {
        margin-top: 16px;
        text-align: center;
        border-bottom: none;
    }

    .nav-container {
        padding: 0 12px;
    }

    .logo {
        gap: 8px;
        font-size: 1.25rem;
    }

    .logo-icon img {
        width: 32px;
        height: 32px;
    }

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

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    /* Section Padding */
    .problem,
    .solution,
    .research-evidence,
    .technology,
    .benefits,
    .howto,
    .purchase,
    .trust {
        padding: 60px 0;
    }

    .reviews,
    .recommendations {
        padding: 40px 0;
    }

    .container {
        padding: 0 20px;
    }

    /* Typography */
    .section-title {
        font-size: clamp(1.5rem, 6vw, 2rem);
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .section-label {
        font-size: 0.75rem;
        letter-spacing: 2px;
    }

    /* Hero Section */
    .hero-content {
        padding: calc(var(--nav-height) + var(--promo-height) + 40px) 20px 80px;
    }

    .hero-text-slides {
        min-height: 220px;
    }

    .hero-subtitle {
        font-size: 0.75rem;
        letter-spacing: 2px;
    }

    .hero-title {
        font-size: clamp(1.75rem, 7vw, 2.5rem);
        margin-bottom: 16px;
    }

    .hero-description {
        font-size: 0.9375rem;
    }

    .hero-arrow {
        display: none;
    }

    .hero-dots {
        bottom: 80px;
    }

    .scroll-indicator {
        display: none;
    }

    /* Problem Section */
    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-bottom: 40px;
    }

    .problem-card {
        padding: 20px 12px;
        border-radius: 16px;
    }

    .problem-card h3 {
        font-size: 0.875rem;
    }

    .problem-card p {
        font-size: 0.75rem;
    }

    /* CoP Section */
    .cop-section {
        padding: 32px 16px;
        border-radius: 20px;
    }

    .cop-main-title {
        font-size: 1.375rem;
    }

    .cop-subtitle {
        font-size: 0.875rem;
    }

    .cop-text-area h4 {
        font-size: 1.25rem;
    }

    .cop-text-area > p {
        font-size: 0.9375rem;
    }

    .cop-photo,
    .cop-slider,
    .cop-image-area .image-slider {
        height: 220px;
    }

    .wide-slider,
    .cop-bottom-image .image-slider {
        height: 180px;
    }

    .cop-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .cop-stat-item {
        padding: 16px 12px;
    }

    .cop-stat-item .stat-icon {
        width: 36px;
        height: 36px;
        margin-bottom: 8px;
    }

    .cop-stat-item .stat-number {
        font-size: 1.25rem;
    }

    .cop-stat-item .stat-desc {
        font-size: 0.75rem;
    }

    .cop-comparison {
        flex-direction: row !important;
        flex-wrap: nowrap;
        justify-content: flex-start !important;
        align-items: stretch;
        gap: 12px;
        padding: 0;
        margin: 0;
        background: none;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        border-radius: 0;
    }

    .cop-comparison::-webkit-scrollbar {
        display: none;
    }

    .cop-compare-item {
        flex: 0 0 calc(100% - 24px) !important;
        min-width: calc(100% - 24px) !important;
        max-width: calc(100% - 24px) !important;
        scroll-snap-align: start;
        background: var(--bg-light);
        border-radius: 20px;
        padding: 24px 16px;
    }

    .cop-compare-arrow {
        display: none;
    }

    .cop-visual-box svg {
        max-width: 120px;
    }

    .compare-desc p {
        font-size: 0.875rem;
    }

    .compare-desc li {
        font-size: 0.75rem;
    }

    .cop-dots {
        display: flex;
        justify-content: center;
        gap: 8px;
        margin-top: 16px;
        margin-bottom: 24px;
    }

    .cop-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #ccc;
        border: none;
        padding: 0;
        transition: all var(--transition-normal);
    }

    .cop-dot.active {
        background: var(--primary);
        width: 24px;
        border-radius: 4px;
    }

    /* Solution Section */
    .solution-layout {
        grid-template-columns: 1fr;
    }

    .solution-detail-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .solution-detail-section {
        padding: 48px 0;
    }

    .section-subtitle {
        font-size: 1.5rem;
    }

    .solution-detail-section .stat {
        padding: 16px 20px;
    }

    .solution-detail-section .btn-outline {
        align-self: center;
        width: 100%;
        text-align: center;
    }

    .solution-hero-image .image-slider,
    .solution-slider {
        height: 280px;
    }

    .image-overlay-text {
        padding: 20px;
    }

    .image-overlay-text span {
        font-size: 1rem;
    }

    .solution-description {
        font-size: 1.125rem;
    }

    .solution-detail {
        font-size: 0.9375rem;
    }

    .solution-stats {
        gap: 20px;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

    .insole-large {
        max-width: 220px;
    }

    .solution-product-slider {
        max-width: 100%;
    }

    .cop-awareness-tip {
        padding: 20px 24px;
    }

    /* Research Evidence */
    .research-lead {
        font-size: 1rem;
    }

    .research-meta {
        flex-direction: column;
    }

    .research-meta span {
        width: 100%;
    }

    .paper-preview img {
        max-height: 440px;
    }

    .research-results {
        grid-template-columns: 1fr;
    }

    .research-result-card {
        min-height: auto;
    }

    .research-linkage {
        padding: 28px 20px;
    }

    /* Technology Section — 모바일: 슬라이더 복원 */
    .tech-hero-image .image-slider {
        height: 400px;
        position: relative;
    }

    .tech-slider {
        display: block;
        height: 400px;
        position: relative;
        overflow: hidden;
    }

    .tech-slider .slide {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        opacity: 0;
        height: 100%;
        transition: opacity 1s ease-in-out;
    }

    .tech-slider .slide.active {
        opacity: 1;
    }

    .tech-slider .slide img {
        height: 100%;
        object-fit: contain;
    }

    .tech-slider .slider-dots {
        display: flex;
    }

    .tech-card {
        padding: 28px 20px;
        border-radius: 20px;
    }

    .tech-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 16px;
    }

    .tech-card h3 {
        font-size: 1.25rem;
    }

    .layer-section {
        padding: 32px 20px;
        border-radius: 20px;
    }

    .layer-title {
        font-size: 1.25rem;
        margin-bottom: 32px;
    }

    .layer {
        padding: 16px 20px;
        border-radius: 12px;
    }

    .layer-info h4 {
        font-size: 1rem;
    }

    .layer-material {
        font-size: 0.75rem;
    }

    .layer-info p:last-child {
        font-size: 0.8125rem;
    }

    /* Benefits Section */
    .benefits-hero-image .image-slider,
    .benefits-top-slider {
        height: 220px;
    }

    .benefits-slider {
        height: 200px;
    }

    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-bottom: 40px;
    }

    .benefit-card {
        padding: 24px 12px;
        border-radius: 16px;
    }

    .benefit-card h3 {
        font-size: 0.875rem;
        line-height: 1.3;
    }

    .benefit-en {
        font-size: 0.6875rem;
    }

    .comparison {
        padding: 32px 16px;
        border-radius: 20px;
    }

    .comparison-title {
        font-size: 1.25rem;
        margin-bottom: 24px;
    }

    .comparison-header,
    .comparison-row {
        grid-template-columns: 1fr;
    }

    .comparison-header .comp-col:first-child {
        display: none;
    }

    .comparison-header .comp-col {
        padding: 12px 16px;
        font-size: 0.875rem;
    }

    .comparison-row .comp-col {
        padding: 12px 16px;
        font-size: 0.875rem;
    }

    .comparison-row .comp-col:first-child {
        background: var(--primary);
        color: var(--white);
        font-weight: 600;
    }

    /* Target Recommendations - Scroll Snap Mode */
    .target-slider-wrapper {
        display: block;
    }

    .target-nav {
        display: none;
    }

    .target-slider {
        overflow: hidden;
    }

    .target-grid {
        display: flex !important;
        flex-wrap: nowrap;
        gap: 12px;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding: 0;
        margin: 0;
        transition: none;
        transform: none !important;
    }

    .target-grid::-webkit-scrollbar {
        display: none;
    }

    .target-card {
        flex: 0 0 calc(100% - 24px);
        min-width: calc(100% - 24px);
        max-width: calc(100% - 24px);
        scroll-snap-align: start;
        padding: 24px 20px;
    }

    .target-icon {
        width: 48px;
        height: 48px;
        margin-bottom: 12px;
    }

    .target-tag {
        font-size: 0.6875rem;
        padding: 4px 12px;
    }

    .target-card h3 {
        font-size: 1rem;
    }

    .target-card > p {
        font-size: 0.8125rem;
    }

    .target-benefits li {
        font-size: 0.75rem;
    }

    .target-dots {
        display: flex;
        justify-content: center;
        gap: 8px;
        margin-top: 20px;
    }

    .target-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #ccc;
        border: none;
        padding: 0;
        cursor: pointer;
        transition: all var(--transition-normal);
    }

    .target-dot.active {
        background: var(--primary);
        width: 24px;
        border-radius: 4px;
    }

    /* How to Use */
    .howto-images {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-bottom: 40px;
    }

    .content-image-small {
        height: 180px;
    }

    .steps-container {
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: flex-start;
        gap: 12px;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding: 0;
        margin: 0;
    }

    .steps-container::-webkit-scrollbar {
        display: none;
    }

    .step-card {
        padding: 28px 20px;
        flex: 0 0 calc(100% - 24px);
        min-width: calc(100% - 24px);
        max-width: calc(100% - 24px);
        scroll-snap-align: start;
    }

    .step-arrow {
        display: none;
    }

    .steps-dots {
        display: flex;
        justify-content: center;
        gap: 8px;
        margin-top: 16px;
    }

    .steps-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #ccc;
        border: none;
        padding: 0;
        cursor: pointer;
        transition: all var(--transition-normal);
    }

    .steps-dot.active {
        background: var(--primary);
        width: 24px;
        border-radius: 4px;
    }

    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
        margin-bottom: 16px;
    }

    .step-visual {
        width: 100px;
        height: 100px;
        margin-bottom: 16px;
    }

    .step-card h3 {
        font-size: 1.125rem;
    }

    .step-card p {
        font-size: 0.875rem;
    }

    .step-arrow {
        transform: rotate(90deg);
    }

    .step-arrow svg {
        width: 30px;
        height: 30px;
    }

    .steps-note {
        font-size: 0.875rem;
        margin-bottom: 40px;
    }

    .usage-guide {
        padding: 32px 20px;
        border-radius: 20px;
    }

    .usage-guide h3 {
        font-size: 1.125rem;
        margin-bottom: 24px;
    }

    .usage-cards {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .usage-card {
        padding: 24px 20px;
    }

    .usage-icon {
        width: 48px;
        height: 48px;
        margin-bottom: 12px;
    }

    .usage-card h4 {
        font-size: 1rem;
    }

    .usage-card p {
        font-size: 0.875rem;
    }

    /* Purchase Section */
    .product-main {
        max-width: 200px;
    }

    .purchase-product-slider {
        max-width: 100%;
    }

    .product-label {
        font-size: 0.75rem;
    }

    .product-name {
        font-size: 1.75rem;
    }

    .product-subtitle {
        font-size: 0.875rem;
        margin-bottom: 24px;
    }

    .feature-tag {
        font-size: 0.75rem;
        padding: 6px 12px;
    }

    .spec-row {
        flex-direction: column;
        gap: 4px;
        padding: 12px 0;
    }

    .spec-label {
        width: auto;
        font-size: 0.75rem;
    }

    .spec-value {
        font-size: 0.875rem;
    }

    .price-value {
        font-size: 2rem;
    }

    .btn-purchase {
        font-size: 1rem;
        padding: 16px 32px;
    }

    .purchase-badges {
        flex-wrap: wrap;
        gap: 12px;
        margin-top: 24px;
        padding-top: 24px;
    }

    .badge-item {
        flex: 0 0 calc(50% - 6px);
    }

    .badge-item svg {
        width: 24px;
        height: 24px;
    }

    .badge-item span {
        font-size: 0.6875rem;
    }

    /* Reviews Section */
    .reviews-stats {
        flex-direction: column;
        gap: 20px;
        padding: 24px 20px;
        border-radius: 20px;
    }

    .review-stat .stat-number {
        font-size: 2rem;
    }

    .review-stat .stat-label {
        font-size: 0.8125rem;
    }

    .star-rating .star {
        font-size: 1rem;
    }

    .reviews-slider-wrapper {
        flex-direction: column;
        gap: 16px;
    }

    .reviews-slider-wrapper .review-nav {
        display: none;
    }

    .reviews-slider {
        width: 100%;
        overflow: hidden;
    }

    .reviews-track {
        display: flex;
        flex-wrap: nowrap;
    }

    .reviewer-name {
        font-size: 0.9375rem;
    }

    .review-text {
        font-size: 0.875rem;
    }

    /* Trust Section */
    .trust-content {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .trust-card {
        padding: 32px 24px;
    }

    .patent-badge svg,
    .inventor-badge svg,
    .tech-badge svg {
        width: 80px;
        height: 80px;
    }

    .patent-number {
        font-size: 1.25rem;
    }

    .inventor-name {
        font-size: 1.25rem;
    }

    /* Footer */
    .footer {
        padding: 48px 0 24px;
    }

    .footer-main {
        gap: 32px;
        margin-bottom: 32px;
    }

    .footer-logo {
        font-size: 1.25rem;
        justify-content: center;
    }

    .footer-tagline {
        font-size: 0.875rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
        text-align: center;
    }

    .footer-col h4 {
        font-size: 0.8125rem;
        margin-bottom: 12px;
    }

    .footer-col ul {
        gap: 8px;
    }

    .footer-col a,
    .footer-col li {
        font-size: 0.875rem;
    }

    .footer-col-company ul li {
        white-space: normal;
        line-height: 1.5;
    }

    .footer-partners {
        padding: 24px 0;
        margin-bottom: 24px;
    }

    .footer-partners p {
        font-size: 0.6875rem;
        margin-bottom: 12px;
    }

    .partner-logos {
        flex-wrap: wrap;
        gap: 20px;
    }

    .partner {
        font-size: 0.875rem;
    }

    .footer-bottom {
        font-size: 0.75rem;
    }

    /* Floating CTA - show on mobile */
    .floating-cta {
        display: block;
    }

    /* FAQ responsive */
    .faq-question {
        font-size: 0.9375rem;
        padding: 20px 0;
    }

    .faq-answer p {
        font-size: 0.875rem;
    }

    /* Promo banner adjust */
    .promo-text strong {
        display: block;
    }

    /* Add bottom padding for floating CTA */
    .footer {
        padding-bottom: 80px !important;
    }
}

/* Mobile Phones (max-width: 576px) */
@media (max-width: 576px) {
    /* Container */
    .container {
        padding: 0 16px;
    }

    /* Section Padding */
    .problem,
    .solution,
    .research-evidence,
    .technology,
    .benefits,
    .howto,
    .purchase,
    .trust,
    .faq {
        padding: 48px 0;
    }

    .reviews,
    .recommendations {
        padding: 16px 0;
    }

    /* Promo Banner mobile */
    .promo-banner {
        font-size: 0.75rem;
        padding: 8px 12px;
    }

    .promo-content {
        gap: 8px;
    }

    .promo-text {
        font-size: 0.75rem;
    }

    /* FAQ mobile */
    .faq-question {
        font-size: 0.875rem;
        padding: 16px 0;
    }

    .faq-answer p {
        font-size: 0.8125rem;
    }

    /* Target quote mobile */
    .target-quote {
        font-size: 0.75rem;
        padding: 6px 10px;
    }

    /* Hero */
    .hero-content {
        padding: calc(var(--nav-height) + var(--promo-height) + 32px) 16px 80px;
    }

    .hero-text-slides {
        min-height: 200px;
        margin-bottom: 24px;
    }

    .hero-title {
        font-size: 1.625rem;
    }

    .hero-dots {
        bottom: 70px;
        gap: 10px;
    }

    .hero-dot {
        width: 10px;
        height: 10px;
    }

    .hero-research-badge {
        max-width: 100%;
        padding: 8px 12px;
        font-size: 0.75rem;
    }

    .btn {
        width: 100%;
        padding: 14px 24px;
    }

    .hero-cta {
        flex-direction: column;
        gap: 12px;
    }

    /* Problem Grid */
    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .problem-card {
        padding: 16px 10px;
    }

    .problem-icon {
        width: 40px;
        height: 40px;
    }

    .problem-card h3 {
        font-size: 0.8125rem;
    }

    .problem-card p {
        font-size: 0.6875rem;
        display: none;
    }

    /* CoP Section */
    .cop-section {
        padding: 24px 12px;
    }

    .cop-main-title {
        font-size: 1.125rem;
    }

    .cop-header {
        margin-bottom: 24px;
    }

    .cop-text-area h4 {
        font-size: 1.125rem;
    }

    .cop-text-area > p {
        font-size: 0.875rem;
    }

    .path-item {
        padding: 12px;
    }

    .path-icon {
        width: 24px;
        height: 24px;
        font-size: 0.75rem;
    }

    .path-item strong {
        font-size: 0.875rem;
    }

    .path-item p {
        font-size: 0.8125rem;
    }

    .cop-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .cop-stat-item {
        padding: 12px 8px;
        border-radius: 12px;
    }

    .cop-stat-item .stat-icon {
        width: 28px;
        height: 28px;
    }

    .cop-stat-item .stat-number {
        font-size: 1.125rem;
    }

    .cop-stat-item .stat-desc {
        font-size: 0.6875rem;
    }

    /* Research Evidence */
    .research-grid {
        gap: 28px;
        margin-bottom: 32px;
    }

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

    .paper-preview {
        padding: 8px;
    }

    .paper-preview img {
        max-height: 360px;
    }

    .paper-preview-badge {
        top: 16px;
        right: 16px;
        font-size: 0.75rem;
    }

    .research-result-card {
        padding: 20px;
    }

    .research-result-card strong {
        font-size: 1.875rem;
    }

    .research-linkage h3 {
        font-size: 1.25rem;
    }

    .linkage-item {
        padding: 18px;
    }

    /* Benefits Grid */
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .benefit-card {
        padding: 20px 10px;
    }

    .benefit-icon {
        width: 40px;
        height: 40px;
    }

    .benefit-card h3 {
        font-size: 0.75rem;
    }

    .benefit-en,
    .benefit-desc {
        display: none;
    }

    /* Comparison Table */
    .comparison {
        padding: 24px 12px;
    }

    .comparison-title {
        font-size: 1.125rem;
    }

    .comparison-row .comp-col {
        padding: 10px 12px;
        font-size: 0.8125rem;
    }

    /* Target Grid */
    .target-grid {
        gap: 12px;
    }

    .target-card {
        padding: 20px 16px;
    }

    .target-icon {
        width: 40px;
        height: 40px;
    }

    .target-card h3 {
        font-size: 0.9375rem;
    }

    /* Steps */
    .step-card {
        padding: 24px 16px;
    }

    .step-number {
        width: 36px;
        height: 36px;
        font-size: 1.125rem;
    }

    .step-visual {
        width: 80px;
        height: 80px;
    }

    .step-card h3 {
        font-size: 1rem;
    }

    .step-card p {
        font-size: 0.8125rem;
    }

    .usage-guide {
        padding: 24px 16px;
    }

    .usage-guide h3 {
        font-size: 1rem;
    }

    .usage-card {
        padding: 20px 16px;
    }

    /* Purchase */
    .product-name {
        font-size: 1.5rem;
    }

    .price-value {
        font-size: 1.75rem;
    }

    .product-features {
        justify-content: center;
    }

    .feature-tag {
        font-size: 0.6875rem;
        padding: 5px 10px;
    }

    .purchase-badges {
        flex-wrap: nowrap;
        gap: 6px;
    }

    .badge-item {
        flex: 1;
        gap: 4px;
    }

    .badge-item svg {
        width: 18px;
        height: 18px;
    }

    .badge-item span {
        font-size: 0.5625rem;
    }

    .badge-item span {
        font-size: 0.625rem;
    }

    /* Reviews */
    .reviews-stats {
        padding: 20px 16px;
        gap: 16px;
    }

    .review-stat .stat-number {
        font-size: 1.75rem;
    }

    .review-card {
        padding: 20px 16px;
    }

    .review-text {
        font-size: 0.8125rem;
    }

    /* Trust */
    .trust-card {
        padding: 24px 16px;
    }

    .patent-badge svg,
    .inventor-badge svg,
    .tech-badge svg {
        width: 60px;
        height: 60px;
    }

    .patent-number,
    .inventor-name {
        font-size: 1.125rem;
    }

    /* Footer */
    .footer-logo {
        font-size: 1.125rem;
    }

    .partner {
        font-size: 0.8125rem;
    }

    /* Footer Mobile Compact */
    .footer {
        padding: 32px 0 12px;
    }

    .footer-main {
        gap: 16px;
        margin-bottom: 16px;
    }

    .footer-tagline {
        font-size: 0.75rem;
    }

    .footer-links {
        gap: 12px;
    }

    .footer-col h4 {
        font-size: 0.6875rem;
        margin-bottom: 8px;
    }

    .footer-col a,
    .footer-col li {
        font-size: 0.6875rem;
    }

    .footer-col-company ul li {
        line-height: 1.3;
        font-size: 0.625rem;
    }

    .footer-partners {
        padding: 12px 0;
        margin-bottom: 12px;
    }

    .footer-partners p {
        font-size: 0.5625rem;
        margin-bottom: 8px;
    }

    .footer-bottom {
        font-size: 0.5625rem;
    }
}

/* Extra Small Phones (max-width: 400px) */
@media (max-width: 400px) {
    :root {
        --nav-height: 60px;
    }

    .logo-text {
        font-size: 1.125rem;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.375rem;
    }

    .problem-grid,
    .benefits-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .problem-card,
    .benefit-card {
        padding: 14px 8px;
    }

    .problem-icon,
    .benefit-icon {
        width: 36px;
        height: 36px;
    }

    .problem-card h3,
    .benefit-card h3 {
        font-size: 0.6875rem;
    }

    .cop-stats {
        grid-template-columns: 1fr 1fr;
    }

    .target-card {
        padding: 16px 12px;
    }

    .step-card {
        padding: 20px 12px;
    }

    .product-main {
        max-width: 160px;
    }

    .product-name {
        font-size: 1.375rem;
    }

    .price-value {
        font-size: 1.5rem;
    }

    .trust-content {
        gap: 12px;
    }

    .trust-card {
        padding: 20px 12px;
    }
}

/* ============================================
   Touch Device & iOS Optimizations
   ============================================ */

/* iOS Safe Area Support */
@supports (padding: max(0px)) {
    .navbar {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }

    .nav-menu {
        padding-bottom: 0;
    }

    .footer {
        padding-bottom: max(40px, env(safe-area-inset-bottom));
    }
}

/* Prevent iOS text size adjustment */
html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

/* Improve touch targets */
@media (hover: none) and (pointer: coarse) {
    .btn,
    .nav-menu a,
    .mobile-menu-btn,
    .review-nav {
        min-height: 44px;
        min-width: 44px;
    }

    .mobile-menu-btn {
        padding: 12px;
    }

    /* Disable hover transforms on touch devices */
    .problem-card:hover,
    .benefit-card:hover,
    .tech-card:hover,
    .target-card:hover,
    .step-card:hover,
    .trust-card:hover,
    .cop-stat-item:hover {
        transform: none;
    }

    /* Keep active state feedback */
    .problem-card:active,
    .benefit-card:active,
    .tech-card:active,
    .target-card:active,
    .step-card:active,
    .trust-card:active {
        transform: scale(0.98);
    }
}

/* Smooth scrolling for touch */
.reviews-track,
.nav-menu {
    -webkit-overflow-scrolling: touch;
}

/* Fix for iOS background attachment */
@media (max-width: 768px) {
    .problem,
    .solution,
    .howto,
    .purchase {
        background-attachment: scroll;
    }
}

/* Landscape phone optimizations */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 80px 0 40px;
    }

    .hero-content {
        padding-top: calc(var(--nav-height) + 20px);
        padding-bottom: 20px;
    }

    .scroll-indicator {
        display: none;
    }

    .insole-svg {
        width: 100px;
    }

    .nav-menu {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
        padding: 16px;
    }

    .nav-menu a {
        border-bottom: none;
        padding: 8px 16px;
    }
}

/* ============================================
   Target Recommendations Section
   ============================================ */
.recommendations {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

/* Target Slider Wrapper - inactive on desktop */
.target-slider-wrapper {
    position: relative;
}

@media (min-width: 769px) {
    .target-slider {
        overflow: visible;
    }
}

.target-nav {
    display: none;
}

.target-dots {
    display: none;
}

.target-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.target-card {
    background: var(--white);
    padding: 32px 24px;
    border-radius: 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.target-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--primary));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.target-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.target-card:hover::before {
    transform: scaleX(1);
}

.target-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    color: var(--primary);
}

.target-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 20px;
    margin-bottom: 16px;
}

.target-card h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
    color: var(--dark);
    line-height: 1.4;
}

.target-card > p {
    font-size: 0.875rem;
    color: var(--medium-gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

.target-benefits {
    text-align: left;
    padding-left: 0;
}

.target-benefits li {
    font-size: 0.8125rem;
    color: var(--medium-gray);
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
    list-style: none;
}

.target-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

/* ============================================
   Reviews Section
   ============================================ */
.reviews {
    padding: 120px 0;
    background: var(--white);
}

.reviews-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 60px;
    padding: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 24px;
}

.review-stat {
    text-align: center;
    color: var(--white);
}

.review-stat .stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 8px;
}

.review-stat .stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

.star-rating {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-bottom: 8px;
}

.star {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.3);
}

.star.filled {
    color: var(--gold);
}

.star.half {
    background: linear-gradient(90deg, var(--gold) 50%, rgba(255, 255, 255, 0.3) 50%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Reviews Slider */
.reviews-slider-wrapper {
    display: flex;
    align-items: center;
    gap: 20px;
    position: relative;
}

.reviews-slider {
    flex: 1;
    overflow: hidden;
}

.reviews-track {
    display: flex;
    gap: 24px;
    transition: transform var(--transition-slow);
}

.review-card {
    background: var(--bg-light);
    padding: 32px;
    border-radius: 20px;
    flex: 0 0 100%;
    min-width: 100%;
    box-sizing: border-box;
    transition: all var(--transition-normal);
}

@media (max-width: 768px) {
    .review-card {
        flex: 0 0 100% !important;
        min-width: 100% !important;
        padding: 24px 20px;
    }
}

@media (min-width: 769px) and (max-width: 992px) {
    .review-card {
        flex: 0 0 calc(50% - 12px);
        min-width: calc(50% - 12px);
    }
}

@media (min-width: 993px) {
    .review-card {
        flex: 0 0 calc(33.333% - 16px);
        min-width: calc(33.333% - 16px);
    }
}

.review-card:hover {
    box-shadow: var(--shadow-md);
}

.review-nav {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    background: var(--white);
    color: var(--primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.review-nav:hover {
    background: var(--primary);
    color: var(--white);
}

.review-nav svg {
    width: 24px;
    height: 24px;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.reviewer-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 30%;
    flex-shrink: 0;
    margin-right: 8px;
}

.reviewer-info {
    min-width: 0;
    flex: 1;
}

.reviewer-meta {
    white-space: nowrap;
}

.reviewer-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.reviewer-name {
    font-weight: 700;
    color: var(--dark);
}

.reviewer-meta {
    font-size: 0.8125rem;
    color: var(--light-gray);
}

.review-rating {
    display: flex;
    gap: 2px;
}

.review-rating .star {
    font-size: 1rem;
    color: #ddd;
}

.review-rating .star.filled {
    color: var(--gold);
}

.review-text {
    font-size: 0.9375rem;
    color: var(--medium-gray);
    line-height: 1.7;
    margin-bottom: 16px;
}

.review-date {
    font-size: 0.75rem;
    color: var(--light-gray);
}

.review-verified-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.6875rem;
    color: #00C853;
    font-weight: 600;
    margin-top: 8px;
    padding: 4px 10px;
    background: rgba(0, 200, 83, 0.08);
    border-radius: 12px;
}

.review-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.review-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.15);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: all var(--transition-normal);
}

.review-dot.active {
    background: var(--primary);
    width: 24px;
    border-radius: 4px;
}


/* ============================================
   Purchase Trust Badges
   ============================================ */
.purchase-badges {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.badge-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.badge-item:hover {
    color: var(--accent);
}

.badge-item svg {
    width: 28px;
    height: 28px;
}

.badge-item span {
    font-size: 0.75rem;
    font-weight: 500;
}

/* ============================================
   Promo Banner
   ============================================ */
.promo-banner {
    background: linear-gradient(90deg, #0066CC, #00CED1);
    color: var(--white);
    text-align: center;
    padding: 10px 16px;
    font-size: 0.875rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1001;
}

.promo-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.promo-badge {
    background: rgba(255,255,255,0.2);
    color: var(--white);
    font-size: 0.6875rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    animation: promoPulse 2s ease-in-out infinite;
}

@keyframes promoPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.promo-text {
    font-size: 0.8125rem;
    line-height: 1.4;
}

.promo-cta {
    color: var(--white);
    font-weight: 700;
    font-size: 0.8125rem;
    border-bottom: 1px solid rgba(255,255,255,0.5);
    transition: border-color var(--transition-fast);
}

.promo-cta:hover {
    border-color: var(--white);
}

/* ============================================
   Hero Rating Badge (previous session)
   ============================================ */
.hero-rating-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 0.875rem;
    color: var(--white);
    margin-bottom: 16px;
}

.hero-rating-badge .star {
    color: var(--gold);
    font-size: 1rem;
}

.hero-badge-divider {
    opacity: 0.5;
    margin: 0 2px;
}

.hero-research-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 18px;
    border-radius: 30px;
    border: 1px solid rgba(0, 206, 209, 0.45);
    background: rgba(0, 102, 204, 0.24);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.4;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.hero-research-badge:hover {
    background: rgba(0, 206, 209, 0.28);
    border-color: var(--accent);
    transform: translateY(-2px);
}

/* ============================================
   Section CTA (Benefits/Reviews)
   ============================================ */
.section-cta {
    text-align: center;
    margin-top: 48px;
}

.section-cta-text {
    font-size: 1.0625rem;
    color: var(--medium-gray);
    margin-bottom: 16px;
}

.section-cta-btn {
    display: inline-block;
    font-size: 1rem;
    padding: 14px 40px;
}

/* ============================================
   Price Anchoring
   ============================================ */
.price-anchoring {
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid rgba(255, 107, 107, 0.2);
    border-radius: 12px;
    padding: 16px 20px;
    margin-top: 24px;
    margin-bottom: 24px;
    text-align: center;
}

.price-anchor-main {
    font-size: 0.875rem;
    color: var(--danger);
    margin-bottom: 4px;
}

.price-anchor-sub {
    font-size: 0.9375rem;
    color: var(--white);
    font-weight: 600;
}

/* ============================================
   Badge Highlight (30일 환불)
   ============================================ */
.badge-highlight {
    color: var(--accent) !important;
    position: relative;
}

.badge-highlight span {
    font-weight: 700;
}

/* ============================================
   Review Source Badge
   ============================================ */
.review-source-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 200, 83, 0.1);
    border: 1px solid rgba(0, 200, 83, 0.2);
    color: var(--success);
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 8px 20px;
    border-radius: 24px;
    margin-top: 12px;
}

.review-source-badge svg {
    flex-shrink: 0;
}

/* ============================================
   Target Card Personalized Quote
   ============================================ */
.target-quote {
    font-size: 0.8125rem;
    font-style: italic;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 12px;
    line-height: 1.5;
    padding: 8px 12px;
    background: rgba(0, 102, 204, 0.05);
    border-radius: 8px;
}

/* ============================================
   FAQ Section
   ============================================ */
.faq {
    padding: 120px 0;
    background: var(--white);
}

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

.faq-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 24px 0;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--dark);
    text-align: left;
    transition: color var(--transition-fast);
}

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

.faq-toggle-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--light-gray);
    flex-shrink: 0;
    transition: color var(--transition-normal), transform var(--transition-normal);
    line-height: 1;
    width: 24px;
    text-align: center;
    user-select: none;
}

.faq-item.open .faq-toggle-icon {
    color: var(--primary);
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding-bottom: 24px;
}

.faq-answer p {
    font-size: 0.9375rem;
    line-height: 1.8;
    color: var(--medium-gray);
    padding-left: 4px;
}

/* ============================================
   Floating Mobile CTA
   ============================================ */
.floating-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
    padding: 12px 16px;
    padding-bottom: max(12px, env(safe-area-inset-bottom));
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.floating-cta.visible {
    transform: translateY(0);
}

.floating-cta-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    font-size: 1rem;
    font-weight: 700;
    border-radius: 12px;
    text-align: center;
    transition: opacity var(--transition-fast);
}

.floating-cta-btn:hover {
    opacity: 0.9;
}

.floating-price {
    font-size: 1.125rem;
    font-weight: 900;
}

.floating-text {
    font-size: 0.9375rem;
}

/* ============================================
   Scroll to Top Button
   ============================================ */
.scroll-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--white);
    border: none;
    cursor: pointer;
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

.scroll-to-top:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 206, 209, 0.3);
}

@media (max-width: 768px) {
    .scroll-to-top {
        bottom: 90px;
        right: 16px;
        width: 40px;
        height: 40px;
    }
}

/* ============================================
   Lightbox Modal
   ============================================ */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.lightbox-overlay.active {
    display: flex;
}

.lightbox-image {
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 24px;
    background: none;
    border: none;
    color: white;
    font-size: 2.5rem;
    cursor: pointer;
    line-height: 1;
    transition: opacity 0.2s;
}

.lightbox-close:hover {
    opacity: 0.7;
}

@media (max-width: 576px) {
    .hero-research-badge {
        max-width: 100%;
        padding: 8px 12px;
        font-size: 0.75rem;
        line-height: 1.4;
    }
}