/* ===========================================
   1. Design System & CSS Variables (White & Black Theme)
   =========================================== */
:root {
    /* White & Black Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f6f6f6;
    --bg-tertiary: #eeeeee;
    --text-primary: #000000;
    --text-secondary: #222222;
    --text-muted: #666666;
    
    /* Black/Dark gray Accents */
    --accent-1: #000000;
    --accent-2: #222222;
    --accent-gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    
    /* Glassmorphism System - adjusted for light theme */
    --glass-bg: rgba(0, 0, 0, 0.02);
    --glass-bg-hover: rgba(0, 0, 0, 0.05);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-border-focus: rgba(0, 0, 0, 0.2);
    --glass-navbar-bg: rgba(255, 255, 255, 0.85);
    
    /* Easing and Transition */
    --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --cursor-size: 20px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', 'Noto Sans KR', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    letter-spacing: -0.01em;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section {
    padding: 140px 0;
    position: relative;
    z-index: 2;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--text-primary) 40%, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-desc {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* Custom Interactive Cursor */
.custom-cursor {
    width: var(--cursor-size);
    height: var(--cursor-size);
    border: 2px solid var(--accent-1);
    background-color: rgba(0, 0, 0, 0.03);
    border-radius: 50%;
    position: fixed;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 9999;
    transition: width 0.3s ease, height 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
    opacity: 0;
}

/* Hide default cursor on desktop / fine pointer devices */
@media (pointer: fine) {
    body,
    body * {
        cursor: none !important;
    }
}

.custom-cursor.hovered {
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.08);
    border-color: var(--accent-1);
}

/* ===========================================
   3. Button Styling
   =========================================== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 100px;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
}

.primary-btn {
    background: var(--accent-gradient);
    color: var(--bg-primary);
}

.primary-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(0, 242, 204, 0.25);
}

.secondary-btn {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
}

.secondary-btn:hover {
    background: var(--glass-bg-hover);
    border-color: var(--text-primary);
    transform: translateY(-4px);
}

/* ===========================================
   4. Glassmorphism Card Style
   =========================================== */
.content-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    transition: var(--transition-smooth);
}

/* ===========================================
   5. Glassy Navigation Bar
   =========================================== */
.glassy-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 30px 0;
    transition: var(--transition-smooth);
}

.glassy-navbar.scrolled {
    padding: 18px 0;
    background-color: var(--glass-navbar-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

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

.logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.logo-text {
    font-family: 'Adelia', 'Adelia Regular', 'Great Vibes', cursive;
    font-weight: 400;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: var(--transition-smooth);
    display: inline-block;
    line-height: 1.8;
    padding-top: 10px;
    padding-bottom: 4px;
}

.logo:hover .logo-text {
    filter: brightness(1.2);
    transform: scale(1.02);
}

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    transition: var(--transition-fast);
    position: relative;
    padding: 6px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--accent-gradient);
    transition: var(--transition-fast);
}

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

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

.nav-links .cta-button {
    border: 1px solid var(--accent-1);
    color: var(--accent-1);
    padding: 10px 24px;
    border-radius: 100px;
    transition: var(--transition-smooth);
}

.nav-links .cta-button::after {
    display: none;
}

.nav-links .cta-button:hover {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 242, 204, 0.2);
}

/* ===========================================
   6. Hero Section & Blobs Background
   =========================================== */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at 60% 40%, #f9f9f9 0%, var(--bg-primary) 70%);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

/* Background Animated Blobs */
.blob-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    opacity: 0.6;
    filter: blur(120px);
}

.blob {
    position: absolute;
    border-radius: 50%;
    mix-blend-mode: multiply;
    animation: blob-drift 20s infinite alternate ease-in-out;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.05) 0%, rgba(0, 0, 0, 0) 70%);
    top: -10%;
    right: -10%;
    animation-duration: 25s;
}

.blob-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0) 70%);
    bottom: -15%;
    left: -10%;
    animation-duration: 30s;
    animation-delay: -5s;
}

.blob-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.04) 0%, rgba(0, 0, 0, 0) 70%);
    top: 40%;
    left: 40%;
    animation-duration: 22s;
    animation-delay: -10s;
}

@keyframes blob-drift {
    0% {
        transform: translate(0, 0) scale(1) rotate(0deg);
    }
    50% {
        transform: translate(50px, -40px) scale(1.1) rotate(180deg);
    }
    100% {
        transform: translate(-30px, 60px) scale(0.9) rotate(360deg);
    }
}

.hero-container {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 800px;
}

.hero-title {
    font-size: 5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, #ffffff 40%, var(--accent-1), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gradient-text-blend {
    display: inline-block;
    background: linear-gradient(to right, #ffffff 0%, var(--accent-1) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.6rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 48px;
    max-width: 600px;
    line-height: 1.7;
}

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

/* ===========================================
   7. About Us Section
   =========================================== */
.about-section {
    background-color: var(--bg-secondary);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.25rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 28px;
    text-align: center;
    line-height: 1.85;
}

/* ===========================================
   8. Services Section
   =========================================== */
.services-section {
    background-color: var(--bg-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    margin-top: 50px;
}

.service-card {
    padding: 50px 40px;
    text-align: left;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 242, 204, 0.05), transparent);
    opacity: 0;
    transition: var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(0, 242, 204, 0.3);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.service-card:hover::before {
    opacity: 1;
}

.service-icon {
    font-size: 3.2rem;
    margin-bottom: 30px;
    display: inline-block;
    transition: transform 0.5s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.15) rotate(5deg);
}

.service-card h4 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.7;
}

/* ===========================================
   9. Portfolio Section
   =========================================== */
.portfolio-section {
    background-color: var(--bg-secondary);
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 50px;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 12px 28px;
    border-radius: 100px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.88rem;
    letter-spacing: 1px;
    transition: var(--transition-smooth);
}

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

.filter-btn.active {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    border-color: transparent;
    box-shadow: 0 8px 20px rgba(0, 242, 204, 0.2);
}

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

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

@media (max-width: 992px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .portfolio-grid,
    .portfolio-grid.two-cols {
        grid-template-columns: 1fr;
    }
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    height: auto;
    cursor: pointer;
    border-radius: 20px;
}

.portfolio-img-placeholder {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-primary));
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 2px;
    transition: var(--transition-smooth);
}

.portfolio-item:hover .portfolio-img-placeholder {
    transform: scale(1.08);
}

.portfolio-item .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(8, 10, 15, 0.95), rgba(8, 10, 15, 0.4));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    opacity: 0;
    transition: var(--transition-smooth);
    padding: 24px;
    text-align: center;
}

.portfolio-item .overlay span {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    transform: translateY(20px);
    transition: var(--transition-smooth);
    margin-bottom: 8px;
    background: linear-gradient(135deg, #ffffff, #dddddd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.portfolio-item .overlay small {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    transform: translateY(20px);
    transition: var(--transition-smooth);
    transition-delay: 0.05s;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.portfolio-item:hover .overlay {
    opacity: 1;
}

.portfolio-item:hover .overlay span,
.portfolio-item:hover .overlay small {
    transform: translateY(0);
}

/* ===========================================
   10. Contact Section
   =========================================== */
.contact-section {
    background-color: var(--bg-primary);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-form input,
.contact-form textarea {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 18px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: var(--transition-smooth);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--accent-1);
    box-shadow: 0 0 0 4px var(--glass-border-focus);
    background: rgba(255, 255, 255, 0.04);
}

.form-message {
    text-align: center;
    margin-top: 24px;
    font-weight: 600;
    min-height: 24px;
}

/* ===========================================
   11. Footer
   =========================================== */
.main-footer {
    background-color: hsl(225, 25%, 4%);
    padding: 50px 0;
    border-top: 1px solid var(--glass-border);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.92rem;
    color: var(--text-muted);
}

.social-links {
    display: flex;
    gap: 30px;
}

.social-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

.social-links a:hover {
    color: var(--accent-1);
}

/* ===========================================
   12. Scroll Reveal Animations
   =========================================== */
.reveal {
    opacity: 0;
    transform: translateY(35px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ===========================================
   13. Media Queries (Responsive)
   =========================================== */
@media (max-width: 992px) {
    .hero-title {
        font-size: 4rem;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 90px 0;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .glassy-navbar {
        padding: 20px 0;
    }
    
    .nav-links {
        gap: 20px;
    }
    
    .nav-links a {
        font-size: 0.75rem;
        letter-spacing: 0.5px;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    
    /* Disable cursor on mobile */
    .custom-cursor {
        display: none !important;
    }
}

/* ===========================================
   14. Multi-page Standalone Styles
   =========================================== */
body.main-landing {
    overflow: hidden;
    height: 100vh;
}

.subpage-section {
    padding-top: 160px; /* Accounts for glassy navbar height */
    min-height: calc(100vh - 140px); /* Fill screen minus footer */
    display: flex;
    align-items: center;
}

.subpage-section .container {
    width: 90%;
    max-width: 1000px;
}

/* ===========================================
   15. Lightbox Modal Styles
   =========================================== */
.lightbox-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(6, 21, 13, 0.98); /* Near solid dark green-black for page feel */
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 2000;
    display: block; /* Allows vertical scrolling container */
    overflow-y: auto;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox-modal.active {
    opacity: 1;
    pointer-events: all;
}

.lightbox-content {
    position: relative;
    width: 90%;
    max-width: 1080px;
    margin: 80px auto; /* Margin-top for spacing */
    transform: translateY(40px) scale(0.98);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-modal.active .lightbox-content {
    transform: translateY(0) scale(1);
}

.lightbox-img {
    width: 100%;
    max-width: 1080px;
    height: auto;
    object-fit: contain;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.7);
}

.lightbox-caption {
    margin-top: 24px;
    text-align: center;
    color: var(--text-primary);
    max-width: 800px;
    padding-bottom: 60px; /* Padding for bottom spacing */
}

.lightbox-caption h4 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-1);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.lightbox-caption p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.lightbox-close {
    position: fixed;
    top: 30px;
    right: 40px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2100;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: var(--transition-smooth);
}

.lightbox-close:hover {
    background: var(--accent-1);
    color: var(--bg-primary);
    border-color: transparent;
    transform: rotate(90deg) scale(1.1);
}

/* ===========================================
   16. VW-Inspired Service Page Specific Styles
   =========================================== */

/* --- Service Hero --- */
.service-hero {
    position: relative;
    padding: 200px 0 100px;
    min-height: 80vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.service-hero .watermark-text {
    position: absolute;
    top: 55%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Outfit', sans-serif;
    font-size: clamp(100px, 16vw, 240px);
    font-weight: 800;
    color: rgba(205, 168, 105, 0.03);
    letter-spacing: -0.02em;
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
    z-index: 0;
}

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

.service-hero-title {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(3.2rem, 8vw, 6.5rem);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 50px;
}

.service-hero-footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-top: 40px;
}

.service-hero-desc {
    max-width: 320px;
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.service-hero .cta-btn-wrap {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-1);
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 1.25rem;
    text-decoration: none;
    border-bottom: 2px solid var(--accent-1);
    padding-bottom: 4px;
    transition: var(--transition-fast);
}

.service-hero .cta-btn-wrap:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
    transform: translateX(5px);
}

/* --- Section Titles & Common Labels --- */
.service-sec-label {
    font-family: 'Outfit', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 24px;
    display: block;
}

.service-sec-title-large {
    font-size: clamp(1.8rem, 4vw, 3.2rem);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 40px;
}

/* --- Section: Thinking Flow --- */
.thinking-flow-sec {
    background-color: var(--bg-secondary);
    padding: 120px 0;
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

.thinking-timeline-wrap {
    position: relative;
    margin: 80px 0 60px;
}

.thinking-timeline-line {
    position: absolute;
    top: 25px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--glass-border);
    z-index: 0;
}

.thinking-timeline-progress {
    position: absolute;
    top: 25px;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--accent-gradient);
    z-index: 1;
    transition: width 1s ease;
}

.thinking-timeline-steps {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    position: relative;
    z-index: 2;
}

.thinking-step-node {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.thinking-step-circle {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 2px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 30px;
    transition: var(--transition-smooth);
}

.thinking-step-node.active .thinking-step-circle {
    border-color: var(--accent-1);
    color: var(--accent-1);
    box-shadow: 0 0 15px rgba(205, 168, 105, 0.3);
}

.thinking-step-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.thinking-step-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    max-width: 180px;
    line-height: 1.5;
}

/* --- Section: Focal Banner --- */
.focal-banner-sec {
    padding: 0;
    height: 70vh;
    min-height: 500px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: #000;
}

.focal-banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.focal-banner-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.45;
}

.focal-banner-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, transparent 30%, var(--bg-primary) 90%);
}

.focal-banner-text {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding: 0 20px;
}

.focal-banner-text h3 {
    font-size: clamp(1.8rem, 4.5vw, 3.5rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.4;
    letter-spacing: -0.01em;
}

/* --- Section: Split Content (About/Why) --- */
.split-content-sec {
    padding: 140px 0;
}

.split-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.split-left {
    position: sticky;
    top: 150px;
}

.split-sticky-img {
    width: 100%;
    height: 500px;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
}

.split-sticky-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.split-right {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.split-list-item {
    padding-bottom: 40px;
    border-bottom: 1px solid var(--glass-border);
    opacity: 0.3;
    transform: translateY(20px);
    transition: all 0.8s ease;
}

.split-list-item.active {
    opacity: 1;
    transform: translateY(0);
}

.split-item-num {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--accent-1);
    margin-bottom: 16px;
    display: block;
}

.split-item-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.split-item-desc {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.8;
}

/* --- Section: Thinking Layers --- */
.thinking-layers-sec {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    padding: 120px 0;
}

.layers-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 60px;
}

.layer-box {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 50px 40px;
    transition: var(--transition-smooth);
}

.layer-box:hover {
    border-color: var(--glass-border-focus);
    background: var(--glass-bg-hover);
    transform: translateY(-5px);
}

.layer-box-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-1);
    margin-bottom: 40px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.layer-items-stack {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.layer-item-card {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-fast);
}

.layer-item-card:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: var(--glass-border);
    padding-left: 30px;
}

.layer-item-name {
    font-size: 1.05rem;
    font-weight: 600;
}

.layer-item-arrow {
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.layer-item-card:hover .layer-item-arrow {
    color: var(--accent-1);
    transform: translateX(5px);
}

/* --- Section: Execution Flow Diagram --- */
.execution-flow-sec {
    padding: 140px 0;
}

.flow-diagram-wrap {
    margin-top: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    min-height: 400px;
}

.flow-core-node {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--bg-tertiary) 0%, var(--bg-primary) 100%);
    border: 2px solid var(--accent-1);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 30px rgba(205, 168, 105, 0.2);
    z-index: 5;
    position: relative;
}

.flow-core-label {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--accent-2);
    letter-spacing: 1.5px;
}

.flow-satellite-nodes {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 2;
}

.flow-node {
    position: absolute;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    padding: 18px 36px;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.flow-node:hover {
    border-color: var(--accent-1);
    color: var(--accent-1);
    box-shadow: 0 0 20px rgba(205, 168, 105, 0.2);
    transform: scale(1.05);
}

/* Position nodes around the core */
.flow-node-inquiry {
    top: 40%;
    left: 10%;
}

.flow-node-brief {
    top: 40%;
    left: 30%;
}

.flow-node-release {
    top: 35%;
    right: 30%;
}

.flow-node-platform {
    top: 48%;
    right: 28%;
}

/* Connecting Line overlay */
.flow-connector-line {
    position: absolute;
    top: 50%;
    left: 15%;
    width: 70%;
    height: 2px;
    background: linear-gradient(to right, var(--glass-border) 0%, var(--accent-1) 50%, var(--glass-border) 100%);
    z-index: 1;
}

/* Responsive Specifics */
@media (max-width: 900px) {
    .thinking-timeline-steps {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .thinking-timeline-line,
    .thinking-timeline-progress {
        display: none;
    }

    .thinking-step-node {
        align-items: center;
        text-align: center;
    }

    .thinking-step-circle {
        margin-bottom: 15px;
    }

    .split-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .split-left {
        position: relative;
        top: 0;
    }

    .split-sticky-img {
        height: 300px;
    }

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

    .flow-diagram-wrap {
        flex-direction: column;
        gap: 30px;
        min-height: auto;
    }

    .flow-satellite-nodes,
    .flow-connector-line {
        display: none;
    }

    .flow-node {
        position: relative;
        top: auto;
        left: auto;
        right: auto;
        width: 100%;
        max-width: 300px;
        text-align: center;
    }

    .flow-core-node {
        order: -1;
    }
}