:root {
    --primary: #6B1A4E;
    --primary-light: #9C3A73;
    --accent: #E8D5E0;
    --bg: #FAF7F9;
    --surface: #FFFFFF;
    --text: #1A1A2E;
    --text-secondary: #6B6B7B;
    --border: #E8E0E5;
    --success: #2D8A5E;
    --warning: #D4A017;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.10);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.15);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Navigation */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 0 24px;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 32px; height: 32px;
    background: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-links.mobile-open {
    display: flex;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--surface);
    flex-direction: column;
    padding: 16px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text);
}

/* Hero */
.hero {
    padding: 140px 24px 80px;
    text-align: center;
    background: linear-gradient(180deg, var(--bg) 0%, #fff 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(107,26,78,0.04) 0%, transparent 50%);
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: var(--primary);
    padding: 8px 18px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 28px;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    max-width: 800px;
    margin: 0 auto 20px;
    letter-spacing: -0.02em;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-cta {
    display: inline-flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px rgba(107,26,78,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(107,26,78,0.4);
}

.btn-secondary {
    background: white;
    color: var(--text);
    border: 1.5px solid var(--border);
}

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

/* Section Headers */
.section {
    padding: 80px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

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

.section-header h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 550px;
    margin: 0 auto;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-light);
    margin-bottom: 12px;
}

/* Feature Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    opacity: 0;
    transition: opacity 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

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

.feature-icon {
    width: 48px; height: 48px;
    background: var(--accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.6;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.tag {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 100px;
    background: var(--bg);
    color: var(--text-secondary);
}

.tag.ai {
    background: rgba(107,26,78,0.08);
    color: var(--primary);
}

/* Gallery */
.gallery-section {
    background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
    padding: 80px 24px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.gallery-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}

.gallery-item:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.gallery-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.4s;
}

.gallery-item:hover img {
    transform: scale(1.03);
}

.gallery-caption {
    padding: 16px 20px;
    background: var(--surface);
}

.gallery-caption h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.gallery-caption p {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.gallery-badge {
    position: absolute;
    top: 12px; right: 12px;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(10px);
    color: white;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Lightbox — plain click-to-view. Zoom is left entirely to the browser's
   native zoom (Ctrl/Cmd + scroll, pinch, etc.) — no custom zoom JS. */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 20, 0.96);
    z-index: 9999;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s;
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-img-container {
    position: relative;
    max-width: 96vw;
    max-height: 90vh;
    overflow: auto;
    border-radius: 12px;
    background: #000;
}

.lightbox-img-container img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    display: block;
}

.lightbox-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 10;
}

.lightbox-btn {
    width: 44px; height: 44px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    -webkit-tap-highlight-color: transparent;
}

.lightbox-btn:hover {
    background: rgba(255,255,255,0.25);
    transform: scale(1.1);
}

.lightbox-btn:active { transform: scale(0.95); }

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px; height: 50px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    color: white;
    border-radius: 50%;
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    -webkit-tap-highlight-color: transparent;
}

.lightbox-nav:hover { background: rgba(255,255,255,0.3); }
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

.lightbox-info {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(10px);
    padding: 10px 24px;
    border-radius: 100px;
    color: white;
    font-size: 0.85rem;
    text-align: center;
    white-space: nowrap;
}

/* AI Section */
.ai-section {
    background: var(--primary);
    color: white;
    padding: 100px 24px;
    position: relative;
    overflow: hidden;
}

.ai-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255,255,255,0.03) 0%, transparent 50%);
    pointer-events: none;
}

.ai-inner {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.ai-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.ai-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.ai-content p {
    font-size: 1.1rem;
    opacity: 0.85;
    margin-bottom: 32px;
    line-height: 1.7;
}

.ai-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ai-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.ai-feature-icon {
    width: 44px; height: 44px;
    min-width: 44px;
    background: rgba(255,255,255,0.12);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.ai-feature-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.ai-feature-item p {
    font-size: 0.9rem;
    opacity: 0.7;
    margin: 0;
}

.ai-visual {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 40px;
    position: relative;
    cursor: pointer;
}

.ai-visual img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    display: block;
}

/* Module Breakdown */
.module-section {
    padding: 80px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.module-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.module-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px 28px;
    display: grid;
    grid-template-columns: 40px 108px 1fr auto;
    gap: 20px;
    align-items: center;
    transition: all 0.3s;
    cursor: pointer;
}

.module-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.module-num {
    width: 40px; height: 40px;
    background: var(--accent);
    color: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.module-thumb {
    width: 108px;
    height: 72px;
    border-radius: 10px;
    overflow: hidden;
    background: var(--bg);
    border: 1px solid var(--border);
}

.module-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    display: block;
    transition: transform 0.4s;
}

.module-item:hover .module-thumb img {
    transform: scale(1.06);
}

.module-info h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.module-info p {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.module-arrow {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: transform 0.2s;
}

.module-item:hover .module-arrow {
    transform: translateX(4px);
    color: var(--primary);
}

/* Footer */
footer {
    background: var(--text);
    color: white;
    padding: 60px 24px 40px;
    text-align: center;
}

.footer-inner {
    max-width: 600px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.footer-inner p {
    opacity: 0.6;
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.footer-cta {
    display: inline-flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

/* Mobile */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }
    .hero { padding: 120px 20px 60px; }
    .section { padding: 60px 20px; }
    .ai-grid { grid-template-columns: 1fr; gap: 40px; }
    .gallery-grid { grid-template-columns: 1fr; }
    .module-item { grid-template-columns: 32px 76px 1fr; padding: 14px 18px; gap: 14px; }
    .module-thumb { width: 76px; height: 54px; }
    .module-arrow { display: none; }
    .lightbox-nav { display: none; }
}

@media (max-width: 480px) {
    .features-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr; }
}

/* Animations */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate {
    animation: fadeUp 0.7s ease-out forwards;
    opacity: 0;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }