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

:root {
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', sans-serif;
    --color-bg: #ffffff;
    --color-text: #000000;
    --color-text-secondary: #666666;
    --color-border: #e5e5e5;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    --max-width: 1200px;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font-body); font-size: 16px; line-height: 1.6; color: var(--color-text); background: var(--color-bg); -webkit-font-smoothing: antialiased; padding-top: 0; }

h1, h2, h3 { font-family: var(--font-heading); font-weight: 600; line-height: 1.2; margin-bottom: var(--space-md); }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 500; }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); font-weight: 500; }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
p { margin-bottom: var(--space-md); font-size: clamp(0.95rem, 2vw, 1.1rem); line-height: 1.7; }
a { color: inherit; text-decoration: none; transition: all 0.3s ease; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.25rem; }
.section { padding: var(--space-3xl) 0; }

/* Navigation */
.nav { position: absolute; top: 0; width: 100%; background: white; z-index: 1000; }
.nav .container { display: flex; justify-content: space-between; align-items: center; padding: var(--space-md) var(--space-lg); position: relative; }
.logo-img { height: 32px; width: auto; }
.nav-links { display: flex; gap: var(--space-lg); }
.nav-links a { font-size: 0.95rem; font-weight: 500; transition: opacity 0.3s; }
.nav-links a:hover { opacity: 0.6; }

/* Burger Menu */
.burger-menu {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.burger-menu span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all 0.3s ease;
}

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

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

.burger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .burger-menu {
        display: flex;
    }
    
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        z-index: 999;
    }
    
    .nav-links.active {
        max-height: 250px;
    }
    
    .nav-links a {
        padding: var(--space-sm) var(--space-lg);
        font-size: 0.9rem;
    }
}

/* Hero */
.hero { padding: calc(var(--space-2xl) + 60px) 0 var(--space-2xl); min-height: 80vh; display: flex; align-items: center; position: relative; }
.hero-content { display: grid; grid-template-columns: 1fr; gap: var(--space-xl); align-items: center; }
.ceo-letter-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    transition: opacity 0.3s ease;
    max-width: 500px;
}
.ceo-letter-card:hover {
    opacity: 0.7;
}
.letter-image-wrapper {
    flex-shrink: 0;
    width: 100px;
    height: auto;
}
.letter-image {
    width: 100%;
    height: auto;
    display: block;
}
.letter-card-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.letter-card-label {
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #999;
}
.letter-card-title {
    font-size: 0.85rem;
    color: var(--color-text);
    line-height: 1.4;
    font-weight: 400;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 0%; }
    50% { background-position: 100% 0%; }
}
.hero-title { margin-bottom: var(--space-md); max-width: 800px; font-weight: 300; }
.hero-description { font-size: clamp(1rem, 2.5vw, 1.25rem); color: var(--color-text-secondary); max-width: 600px; margin-bottom: var(--space-xl); }
.hero-buttons { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.hero-visual { width: 100%; aspect-ratio: 16/9; background: #f5f5f5; border-radius: 8px; overflow: hidden; }
.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.visual-placeholder { width: 100%; height: 100%; background: linear-gradient(135deg, #b8b5b5 0%, #000000 100%); display: flex; align-items: center; justify-content: center; }
.visual-content { text-align: center; color: white; }
.visual-icon { font-size: 3rem; display: block; margin-bottom: var(--space-sm); }
.visual-content p { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 600; margin: 0; }

/* Buttons */
.btn { display: inline-block; padding: 0.875rem 1.75rem; font-family: var(--font-heading); font-size: 0.95rem; font-weight: 500; border-radius: 4px; cursor: pointer; transition: all 0.3s ease; border: none; text-align: center; }
.btn-primary { background: var(--color-text); color: white; }
.btn-primary:hover { background: #333; transform: translateY(-2px); }
.btn-secondary { background: transparent; color: var(--color-text); border: 1px solid var(--color-text); }
.btn-secondary:hover { background: var(--color-text); color: white; transform: translateY(-2px); }

/* Sections */
.section-header { margin-bottom: var(--space-2xl); }
.section-label { display: block; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-secondary); margin-bottom: var(--space-sm); }
.section-label-image { 
    display: block; 
    height: 35px; 
    width: auto; 
    margin-bottom: var(--space-sm); 
}
.section-title { max-width: 900px; }

/* Cards */
.cards-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-lg); }
.card { padding: var(--space-xl); border: 1px solid var(--color-border); border-radius: 8px; transition: all 0.3s ease; }
.card:hover { border-color: var(--color-text); transform: translateY(-4px); }
.card-title { font-size: 1.5rem; margin-bottom: var(--space-md); }
.card-description { color: var(--color-text-secondary); margin-bottom: var(--space-lg); }
.card-link { font-size: 0.95rem; font-weight: 500; border-bottom: 1px solid var(--color-text); padding-bottom: 2px; }
.card-link:hover { opacity: 0.6; }

/* Logo Animation Container */
.logo-animation-container { 
    width: 100%; 
    min-height: 300px; 
    display: flex; 
    align-items: flex-start; 
    justify-content: center; 
    margin: calc(var(--space-xl) * -1) 0 0;
    position: relative;
    padding-top: 0;
}

.animation-stage { 
    position: relative; 
    width: 100%; 
    max-width: 900px;
    height: 300px; 
    display: flex; 
    align-items: center; 
    justify-content: center;
}

/* Social Media Logos - Initial positioned horizontally */
.social-logo { 
    position: absolute; 
    width: 80px; 
    height: 80px; 
    object-fit: contain;
    opacity: 0;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.1));
    transition: all 0.3s ease;
}

/* Position each logo horizontally across the screen */
#logo-1 { left: 5%; top: 50%; transform: translate(-50%, -50%); width: 95px; height: 95px; }
#logo-2 { left: 27.5%; top: 50%; transform: translate(-50%, -50%); width: 95px; height: 95px; }
#logo-3 { left: 50%; top: 50%; transform: translate(-50%, -50%); width: 95px; height: 95px; }
#logo-4 { left: 72.5%; top: 50%; transform: translate(-50%, -50%); }
#logo-5 { left: 95%; top: 50%; transform: translate(-50%, -50%); }

/* Blackhole Effect */
.blackhole-effect { 
    position: absolute; 
    top: 50%; 
    left: 50%; 
    transform: translate(-50%, -50%);
    width: 0; 
    height: 0; 
    border-radius: 50%; 
    background: radial-gradient(circle, rgba(0,0,0,0.8) 0%, transparent 70%);
    opacity: 0;
    pointer-events: none;
}

/* Main Rovo Logo - Hidden initially */
.main-logo { 
    position: absolute; 
    top: 50%; 
    left: 50%; 
    transform: translate(-50%, -50%) scale(0);
    width: 220px; 
    height: auto; 
    object-fit: contain;
    opacity: 0;
    filter: drop-shadow(0 8px 24px rgba(0,0,0,0.15));
}

/* Floating animation for social logos */
@keyframes float {
    0%, 100% { transform: translate(-50%, -50%) translateY(0px); }
    50% { transform: translate(-50%, -50%) translateY(-10px); }
}

/* Responsive sizing */
@media (max-width: 768px) {
    .animation-stage { height: 350px; }
    .social-logo { width: 45px; height: 45px; }
    .main-logo { width: 150px; }
    
    /* Reposition logos vertically on tablet */
    #logo-1 { left: 15%; top: 30%; }
    #logo-2 { left: 50%; top: 30%; }
    #logo-3 { left: 85%; top: 30%; }
    #logo-4 { left: 30%; top: 70%; }
    #logo-5 { left: 70%; top: 70%; }
    
    /* Adjust special logo sizes on tablet */
    #logo-1 { width: 55px; height: 55px; }
    #logo-2 { width: 55px; height: 55px; }
    #logo-3 { width: 55px; height: 55px; }
}

@media (max-width: 480px) {
    .animation-stage { height: 300px; }
    .social-logo { width: 40px; height: 40px; }
    .main-logo { width: 120px; }
    
    /* Reposition logos in a circular pattern on mobile */
    #logo-1 { left: 20%; top: 25%; }
    #logo-2 { left: 50%; top: 15%; }
    #logo-3 { left: 80%; top: 25%; }
    #logo-4 { left: 25%; top: 75%; }
    #logo-5 { left: 75%; top: 75%; }
    
    /* Smaller special logos on mobile */
    #logo-1 { width: 48px; height: 48px; }
    #logo-2 { width: 48px; height: 48px; }
    #logo-3 { width: 48px; height: 48px; }
}

/* Features Explanation Section */
.features-explanation {
    max-width: 900px;
    margin: var(--space-xl) auto 0;
    text-align: center;
}

.explanation-intro {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--color-text);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
    font-weight: 400;
    padding: var(--space-lg);
    background: #fafafa;
    border-radius: 8px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.feature-item {
    padding: var(--space-sm) 0;
    text-align: left;
    transition: all 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.feature-item:hover {
    opacity: 0.7;
}

.feature-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    line-height: 1;
    color: var(--color-text);
    width: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-content {
    flex: 1;
}

.feature-source {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 0.15rem;
    color: var(--color-text);
}

.feature-desc {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    line-height: 1.4;
}

.outcome-statement {
    max-width: 700px;
    margin: 0 auto var(--space-xl);
    padding: var(--space-lg);
    background: #f5f5f5;
    border-radius: 8px;
}

.outcome-statement h3 {
    font-size: clamp(1.3rem, 3vw, 1.75rem);
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

.outcome-statement p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin: 0;
}

.use-case {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-lg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
}

.use-case-title {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 1rem;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.use-case-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.flow-step {
    padding: var(--space-sm) var(--space-md);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    min-width: 120px;
    text-align: center;
}

.step-location {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.2rem;
    color: var(--color-text);
}

.step-role {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.flow-arrow {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
}

.flow-result {
    padding: var(--space-sm) var(--space-md);
    background: var(--color-text);
    color: white;
    border-radius: 6px;
    min-width: 120px;
    text-align: center;
}

.result-text {
    font-weight: 600;
    font-size: 0.9rem;
}

.use-case-subtitle {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin: 0;
    font-style: italic;
}

/* Responsive Features Section */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .use-case-flow {
        flex-direction: column;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
    }
    
    .logo-animation-container {
        min-height: 350px;
    }
}

@media (max-width: 480px) {
    .logo-animation-container {
        min-height: 300px;
    }
}

/* Manifesto Page */
.manifesto-section {
    padding: var(--space-3xl) 0;
}

.manifesto-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.manifesto-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 600;
    margin-bottom: var(--space-2xl);
    line-height: 1.1;
}

.manifesto-text {
    text-align: left;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text);
}

.manifesto-text p {
    margin-bottom: var(--space-lg);
}

.manifesto-text strong {
    font-weight: 600;
}

.manifesto-list {
    list-style: none;
    padding-left: 0;
    margin: var(--space-xl) 0;
}

.manifesto-list li {
    padding-left: var(--space-lg);
    margin-bottom: var(--space-md);
    position: relative;
}

.manifesto-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    font-weight: 600;
}

.manifesto-closing {
    font-size: 1.2rem;
    text-align: center;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-xl);
}

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

.cta-button {
    display: inline-block;
    padding: var(--space-md) var(--space-xl);
    background: var(--color-text);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.cta-button:hover {
    opacity: 0.85;
}

/* Mission Grid */
.mission-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-lg); }
.mission-card { padding: var(--space-xl); background: #fafafa; border-radius: 8px; }
.mission-card .card-title { margin-bottom: var(--space-md); }

/* Contribute Section */
.contribute-section { background: #fafafa; }
.join-content { max-width: 700px; margin: 0 auto; text-align: center; margin-top: var(--space-3xl); }
.join-title { margin-bottom: var(--space-md); }
.join-description { color: var(--color-text-secondary); margin-bottom: var(--space-xl); }

/* Feedback Section */
.feedback-section { max-width: 900px; margin: var(--space-3xl) auto 0; }
.section-title-center { text-align: center; font-size: clamp(2rem, 4vw, 2.5rem); margin-bottom: var(--space-md); }
.section-description-center { text-align: center; color: var(--color-text-secondary); margin-bottom: var(--space-2xl); font-size: 1.1rem; }

/* Feedback Form */
.feedback-form { background: white; padding: var(--space-xl); border-radius: 8px; border: 1px solid var(--color-border); margin-bottom: var(--space-2xl); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); margin-bottom: var(--space-md); }
.form-input, .form-select, .form-textarea { 
    width: 100%; 
    padding: var(--space-md); 
    border: 1px solid var(--color-border); 
    border-radius: 6px; 
    font-family: var(--font-body); 
    font-size: 0.95rem;
    transition: border-color 0.3s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { 
    outline: none; 
    border-color: var(--color-text); 
}
.form-select { cursor: pointer; }
.form-textarea { resize: vertical; min-height: 100px; grid-column: 1 / -1; }
.feedback-message { 
    margin-top: var(--space-md); 
    padding: var(--space-md); 
    border-radius: 6px; 
    text-align: center;
    font-weight: 500;
}
.success-message { background: #e8f5e9; color: #2e7d32; }
.error-message { background: #ffebee; color: #c62828; }

/* Feedback Board */
.feedback-board { margin-bottom: var(--space-3xl); }
.board-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-xl); flex-wrap: wrap; gap: var(--space-md); }
.board-title { font-size: 1.75rem; margin: 0; }
.board-filters { display: flex; gap: var(--space-sm); }
.filter-btn { 
    padding: 0.5rem 1rem; 
    background: white; 
    border: 1px solid var(--color-border); 
    border-radius: 6px; 
    cursor: pointer; 
    font-size: 0.9rem;
    transition: all 0.3s;
}
.filter-btn:hover { background: #f5f5f5; }
.filter-btn.active { background: var(--color-text); color: white; border-color: var(--color-text); }

/* Feedback Grid */
.feedback-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--space-md); }
.feedback-card { 
    background: white; 
    padding: var(--space-md); 
    border-radius: 6px; 
    border: 1px solid var(--color-border);
    transition: transform 0.3s, box-shadow 0.3s;
}
.feedback-card:hover { transform: translateY(-2px); box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.feedback-type-badge { 
    display: inline-block; 
    padding: 0.2rem 0.6rem; 
    border-radius: 12px; 
    font-size: 0.7rem; 
    font-weight: 500; 
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
}
.badge-feature { background: #e3f2fd; color: #1976d2; }
.badge-feedback { background: #e8f5e9; color: #388e3c; }
.badge-other { background: #f5f5f5; color: #616161; }
.feedback-card-title { font-size: 0.95rem; font-weight: 600; margin-bottom: var(--space-sm); }
.feedback-card-description { color: var(--color-text-secondary); font-size: 0.85rem; margin-bottom: var(--space-sm); line-height: 1.5; }
.feedback-card-meta { display: flex; justify-content: space-between; align-items: center; font-size: 0.75rem; color: var(--color-text-secondary); }
.loading-message, .empty-message { text-align: center; padding: var(--space-2xl); color: var(--color-text-secondary); grid-column: 1 / -1; }

/* Load More Button */
.load-more-container { 
    text-align: center; 
    margin-top: var(--space-lg); 
    grid-column: 1 / -1; 
}
.load-more-btn { 
    padding: var(--space-md) var(--space-xl); 
    background: white; 
    border: 1px solid var(--color-border); 
    border-radius: 6px; 
    cursor: pointer; 
    font-size: 0.9rem;
    transition: all 0.3s;
    font-family: var(--font-body);
}
.load-more-btn:hover { background: #f5f5f5; }
.load-more-btn:disabled { opacity: 0.5; cursor: not-allowed; }

@media (max-width: 768px) {
    .form-row { grid-template-columns: 1fr; }
    .board-header { flex-direction: column; align-items: flex-start; }
    .feedback-grid { grid-template-columns: 1fr; }
}
.waitlist-form { margin-bottom: var(--space-lg); }
.form-group { display: flex; flex-direction: column; gap: var(--space-md); }
.form-input { padding: 1rem; font-size: 1rem; font-family: var(--font-body); border: 1px solid var(--color-border); border-radius: 4px; outline: none; }
.form-input:focus { border-color: var(--color-text); }
.form-note { font-size: 0.85rem; color: var(--color-text-secondary); margin-top: var(--space-sm); }
.success-message { display: none; padding: var(--space-md); background: #e8f5e9; color: #2e7d32; border-radius: 4px; font-weight: 500; }

/* Team Section */
.team-members { 
    display: grid; 
    grid-template-columns: repeat(2, 1fr); 
    gap: var(--space-2xl); 
    max-width: 600px;
    margin: var(--space-lg) auto 0;
}
.team-member { 
    text-align: center;
}
.member-name { 
    font-size: 1.1rem; 
    font-weight: 600; 
    margin-bottom: 0.25rem;
}
.member-role { 
    color: var(--color-text-secondary); 
    font-size: 0.9rem;
    margin: 0;
}

@media (max-width: 768px) {
    .team-members {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

/* Footer */
.footer { padding: var(--space-2xl) 0; border-top: 1px solid var(--color-border); }
.footer-content { display: flex; flex-direction: column; gap: var(--space-lg); margin-bottom: var(--space-lg); }
.footer-logo a { display: inline-block; }
.footer-logo .logo-img { height: 28px; width: auto; }
.footer-logo p { font-size: 0.9rem; color: var(--color-text-secondary); margin: var(--space-sm) 0 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: var(--space-md); }
.footer-links a { font-size: 0.9rem; color: var(--color-text-secondary); }
.footer-links a:hover { color: var(--color-text); }
.footer-bottom { padding-top: var(--space-lg); border-top: 1px solid var(--color-border); }
.footer-bottom p { font-size: 0.85rem; color: var(--color-text-secondary); margin: 0; }

/* Letter Page */
.letter-section { padding: calc(var(--space-2xl) + 70px) 0 var(--space-3xl); background: linear-gradient(to bottom, #fafafa 0%, white 100%); }
.letter-container { max-width: 750px; }
.letter-header { margin-bottom: var(--space-2xl); }
.back-link { font-size: 0.95rem; color: var(--color-text-secondary); transition: color 0.3s; }
.back-link:hover { color: var(--color-text); }
.letter-meta { 
    margin-bottom: var(--space-xl); 
    padding-bottom: var(--space-md); 
    border-bottom: 1px solid #e5e5e5;
    display: flex;
    gap: var(--space-lg);
}
.letter-meta p { font-size: 0.85rem; color: var(--color-text-secondary); margin: 0; }
.letter-title { 
    font-size: clamp(1.75rem, 4vw, 2.5rem); 
    margin-bottom: var(--space-2xl); 
    line-height: 1.3;
    font-weight: 600;
}
.letter-body { font-size: 1.05rem; }
.letter-body p { 
    margin-bottom: var(--space-xl); 
    line-height: 1.9; 
    color: #333;
}
.letter-body p:nth-child(3),
.letter-body p:nth-child(5) {
    padding-top: var(--space-md);
    border-top: 1px solid #f0f0f0;
    margin-top: var(--space-xl);
}
.letter-body strong { font-weight: 600; color: var(--color-text); }
.letter-body em { font-style: italic; }
.letter-body h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: var(--space-2xl); margin-bottom: var(--space-md); }
.letter-body ul { margin: var(--space-lg) 0; padding-left: var(--space-lg); }
.letter-body li { margin-bottom: var(--space-sm); line-height: 1.8; }
.letter-signature { 
    margin-top: var(--space-3xl); 
    padding-top: var(--space-2xl); 
    border-top: 2px solid var(--color-text);
    text-align: center;
}
.letter-signature p { margin: 0; font-size: 1.1rem; }
.letter-cta { 
    margin-top: var(--space-2xl); 
    padding-top: var(--space-xl); 
    display: flex; 
    gap: var(--space-md); 
    justify-content: center;
    flex-wrap: wrap; 
}

/* Tablet */
@media (min-width: 768px) {
    :root { --space-3xl: 5rem; }
    .hero-content { grid-template-columns: 1fr 1fr; }
    .cards-grid { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
    .flow-diagram { grid-template-columns: repeat(2, 1fr); }
    .mission-grid { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
    .form-group { flex-direction: row; }
    .form-input { flex: 1; }
    .footer-content { flex-direction: row; justify-content: space-between; align-items: flex-start; }
    .nav-links { gap: var(--space-xl); }
}

/* Desktop */
@media (min-width: 1024px) {
    :root { --space-3xl: 6rem; }
    .container { padding: 0 2rem; }
    .hero { min-height: 85vh; }
}