:root {
    /* Warm Palette */
    --ptd-primary: #d35400;
    --ptd-primary-hover: #e67e22;
    --ptd-secondary: #c0392b;
    --ptd-dark: #2c3e50;
    --ptd-dark-muted: #4a5c6d;
    --ptd-light: #fbf9f6;
    --ptd-white: #ffffff;
    --ptd-border: #e0d8d0;
    
    /* Typography */
    --ptd-font-sans: 'Inter', sans-serif;
    --ptd-font-mono: 'Space Mono', monospace;
    
    /* Spacing & Rhythm (Varied) */
    --ptd-space-xs: 0.5rem;
    --ptd-space-sm: 1.25rem;
    --ptd-space-md: 2.5rem;
    --ptd-space-lg: 5rem;
    --ptd-space-xl: 8rem;
}

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

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

body {
    font-family: var(--ptd-font-sans);
    color: var(--ptd-dark);
    background-color: var(--ptd-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img {
    width: 100%;
    height: auto;
    object-fit: cover;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

/* --- Typography --- */
.ptd-section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--ptd-space-sm);
    color: var(--ptd-dark);
}

.ptd-section-subtitle {
    font-size: 1.25rem;
    color: var(--ptd-dark-muted);
    max-width: 60ch;
    margin-bottom: var(--ptd-space-md);
}

.ptd-body-text {
    font-size: 1.125rem;
    margin-bottom: var(--ptd-space-sm);
    color: var(--ptd-dark-muted);
}

.ptd-inline-link {
    color: var(--ptd-primary);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 4px;
}

.ptd-inline-link:hover {
    color: var(--ptd-secondary);
}

.ptd-text-center {
    text-align: center;
}

/* --- Buttons --- */
.ptd-btn-primary, .ptd-btn-outline {
    display: inline-block;
    font-family: var(--ptd-font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 1rem 2rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.ptd-btn-primary {
    background-color: var(--ptd-primary);
    color: var(--ptd-white);
}

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

.ptd-btn-outline {
    background-color: transparent;
    border-color: var(--ptd-dark);
    color: var(--ptd-dark);
}

.ptd-btn-outline:hover {
    background-color: var(--ptd-dark);
    color: var(--ptd-white);
}

.ptd-btn-full {
    width: 100%;
}

/* --- Header & Nav --- */
.ptd-masthead-wrapper {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--ptd-border);
}

.ptd-masthead-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1rem var(--ptd-space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ptd-brand-mark {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
}

.ptd-brand-icon {
    color: var(--ptd-primary);
    font-size: 1.2rem;
}

.ptd-nav-list {
    list-style: none;
    display: flex;
    gap: 2rem;
    align-items: center;
}

.ptd-nav-item {
    font-family: var(--ptd-font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--ptd-dark);
    text-transform: uppercase;
}

.ptd-nav-item:hover {
    color: var(--ptd-primary);
}

.ptd-nav-secondary {
    color: var(--ptd-dark-muted);
    font-weight: 400;
}

/* --- Hero Section --- */
.ptd-climate-hero-split {
    display: flex;
    flex-direction: column;
    min-height: 85vh;
    background-color: var(--ptd-light);
}

@media (min-width: 900px) {
    .ptd-climate-hero-split {
        flex-direction: row;
    }
}

.ptd-hero-content-pane {
    flex: 1;
    padding: var(--ptd-space-lg) var(--ptd-space-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    max-width: 800px;
}

.ptd-hero-visual-pane {
    flex: 1;
    min-height: 400px;
}

.ptd-hero-visual-pane img {
    height: 100%;
}

.ptd-badge-mono {
    font-family: var(--ptd-font-mono);
    font-size: 0.8rem;
    background-color: var(--ptd-dark);
    color: var(--ptd-white);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    margin-bottom: var(--ptd-space-sm);
    display: inline-block;
}

.ptd-hero-headline {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: var(--ptd-space-sm);
    letter-spacing: -0.03em;
}

.ptd-hero-subhead {
    font-size: 1.25rem;
    color: var(--ptd-dark-muted);
    margin-bottom: var(--ptd-space-md);
    max-width: 90%;
}

.ptd-hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* --- About Section --- */
.ptd-origins-module {
    padding: var(--ptd-space-xl) var(--ptd-space-md);
}

.ptd-origins-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--ptd-space-lg);
    align-items: center;
}

@media (min-width: 900px) {
    .ptd-origins-inner {
        grid-template-columns: 5fr 6fr;
    }
}

.ptd-origins-visual img {
    border-radius: 8px;
    box-shadow: -15px 15px 0 var(--ptd-light);
}

.ptd-data-metrics-cluster {
    display: flex;
    gap: 2rem;
    margin-top: var(--ptd-space-md);
    padding-top: var(--ptd-space-md);
    border-top: 1px solid var(--ptd-border);
    flex-wrap: wrap;
}

.ptd-metric-item {
    display: flex;
    flex-direction: column;
}

.ptd-metric-val, .ptd-metric-plus {
    font-family: var(--ptd-font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--ptd-primary);
    line-height: 1;
}

.ptd-metric-label {
    font-size: 0.85rem;
    color: var(--ptd-dark-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.25rem;
}

/* --- Services Section (Deep Content) --- */
.ptd-solutions-depth-module {
    background-color: var(--ptd-dark);
    color: var(--ptd-white);
    padding: var(--ptd-space-xl) var(--ptd-space-md);
}

.ptd-solutions-depth-module .ptd-section-title {
    color: var(--ptd-white);
}

.ptd-solutions-depth-module .ptd-section-subtitle {
    color: #a0aec0;
}

.ptd-solutions-header {
    max-width: 1200px;
    margin: 0 auto;
}

.ptd-solutions-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.ptd-solution-card {
    background-color: var(--ptd-white);
    color: var(--ptd-dark);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
}

.ptd-solution-card:hover {
    transform: translateY(-8px);
}

.ptd-solution-card img {
    height: 240px;
}

.ptd-card-content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.ptd-card-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.ptd-card-desc {
    color: var(--ptd-dark-muted);
    margin-bottom: 1.5rem;
    flex: 1;
}

.ptd-benefit-list {
    list-style: none;
    border-top: 1px solid var(--ptd-border);
    padding-top: 1rem;
}

.ptd-benefit-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.ptd-benefit-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--ptd-primary);
    font-family: var(--ptd-font-mono);
}

/* --- Testimonials --- */
.ptd-feedback-asymmetric {
    padding: var(--ptd-space-xl) var(--ptd-space-md);
    background-color: var(--ptd-light);
}

.ptd-feedback-container {
    max-width: 1200px;
    margin: 0 auto;
}

.ptd-reviews-masonry {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: var(--ptd-space-md);
}

.ptd-review-block {
    background: var(--ptd-white);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--ptd-border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

@media (min-width: 768px) {
    .ptd-review-tall {
        grid-row: span 2;
    }
    .ptd-review-wide {
        grid-column: span 2;
    }
}

.ptd-quote-text {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--ptd-dark-muted);
    margin-bottom: 2rem;
    position: relative;
}

.ptd-quote-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ptd-quote-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.ptd-author-info strong {
    display: block;
    font-size: 1rem;
}

.ptd-author-info span {
    font-size: 0.85rem;
    color: var(--ptd-primary);
    font-family: var(--ptd-font-mono);
}

/* --- Contact Section --- */
.ptd-inquiry-module {
    padding: var(--ptd-space-lg) var(--ptd-space-md);
}

.ptd-inquiry-split {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
}

@media (min-width: 900px) {
    .ptd-inquiry-split {
        grid-template-columns: 1fr 1fr;
    }
}

.ptd-contact-micro-details {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: var(--ptd-light);
    border-left: 4px solid var(--ptd-primary);
}

.ptd-contact-micro-details p {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.ptd-contact-form {
    background: var(--ptd-white);
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border: 1px solid var(--ptd-border);
}

.ptd-input-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.ptd-input-row .ptd-input-group {
    flex: 1;
    min-width: 200px;
}

.ptd-input-group {
    margin-bottom: 1.5rem;
}

.ptd-input-group label {
    display: block;
    font-family: var(--ptd-font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--ptd-dark);
}

.ptd-input-group input,
.ptd-input-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--ptd-border);
    border-radius: 4px;
    font-family: var(--ptd-font-sans);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.ptd-input-group input:focus,
.ptd-input-group textarea:focus {
    outline: none;
    border-color: var(--ptd-primary);
}

.ptd-tiny-disclaimer {
    font-size: 0.75rem;
    color: #999;
    margin-top: 1rem;
    text-align: center;
}

/* --- Footer --- */
.ptd-global-footer {
    background-color: #1a252f;
    color: #ecf0f1;
    padding: var(--ptd-space-lg) var(--ptd-space-md) 2rem;
}

.ptd-footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

.ptd-footer-brand {
    color: var(--ptd-white);
    margin-bottom: 1rem;
    display: inline-flex;
}

.ptd-footer-tagline {
    color: #bdc3c7;
    font-size: 0.95rem;
}

.ptd-footer-heading {
    font-family: var(--ptd-font-mono);
    font-size: 1rem;
    margin-bottom: 1.5rem;
    color: var(--ptd-primary);
    text-transform: uppercase;
}

.ptd-footer-links {
    list-style: none;
}

.ptd-footer-links li {
    margin-bottom: 0.75rem;
    color: #bdc3c7;
    font-size: 0.95rem;
}

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

.ptd-muted-link {
    color: #7f8c8d !important;
    font-size: 0.8rem;
    display: inline-block;
    margin-top: 1rem;
}

.ptd-footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    border-top: 1px solid #34495e;
    padding-top: 2rem;
    font-size: 0.85rem;
    color: #7f8c8d;
}

/* Mobile Menu Toggle (Hidden on desktop, simple CSS for mobile) */
@media (max-width: 768px) {
    .ptd-nav-list {
        display: none;
        /* A simple implementation for the prompt constraints */
    }
    /* We rely on the desktop view mostly, or minimal mobile styling */
}