/* ==========================================================================
   Design System & Custom Tokens (Minimalist Executive Style)
   ========================================================================== */
:root {
    /* Color Palette */
    --bg-primary: #faf9f6;          /* Elegant warm off-white / cream */
    --bg-secondary: #f4f3ef;        /* Soft gray-cream */
    --bg-card: #ffffff;
    
    --text-primary: #1a1a18;        /* Soft organic charcoal black */
    --text-secondary: #60605c;      /* Warm muted gray */
    --text-muted: #8c8c88;
    
    --accent-primary: #1a1a18;      /* Strong bold black for main components */
    --accent-blue: #2563eb;
    --accent-green: #15803d;        /* Muted organic forest green */
    
    --border-color: #e6e5e0;
    --border-focus: #1a1a18;
    
    /* Typography */
    --font-serif: 'Instrument Serif', serif;
    --font-sans: 'Inter', sans-serif;
    
    /* Shadows & Transitions */
    --shadow-minimal: 0 4px 20px rgba(26, 26, 24, 0.03), 0 10px 40px rgba(26, 26, 24, 0.04);
    --shadow-hover: 0 10px 30px rgba(26, 26, 24, 0.06), 0 20px 60px rgba(26, 26, 24, 0.08);
    
    --transition-smooth: 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-fast: 0.15s cubic-bezier(0.25, 1, 0.5, 1);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
}

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

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
}

ul {
    list-style: none;
}

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

/* ==========================================================================
   Typography Utilities
   ========================================================================== */
.italic-serif {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
}

.text-center { text-align: center; }
.text-green { color: var(--accent-green); }
.text-blue { color: var(--accent-blue); }
.text-muted { color: var(--text-muted); }
.text-large { font-size: 1.75rem; font-weight: 700; }

.highlight {
    color: var(--text-primary);
    font-weight: 700;
}

.w-full { width: 100%; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-12 { margin-top: 48px; }

/* ==========================================================================
   Layout Grid & Container Utilities
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 780px;
}

.grid {
    display: grid;
}

.grid-2-cols { grid-template-columns: repeat(2, 1fr); }
.grid-3-cols { grid-template-columns: repeat(3, 1fr); }
.grid-4-cols { grid-template-columns: repeat(4, 1fr); }
.gap-8 { gap: 32px; }
.gap-12 { gap: 48px; }

.section-padding {
    padding: 100px 0;
}

.bg-dark-secondary {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    font-family: var(--font-sans);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    letter-spacing: -0.1px;
}

.btn-sm {
    padding: 10px 18px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 0.95rem;
}

.btn-xl {
    padding: 16px 36px;
    font-size: 1.05rem;
}

.btn-primary {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border: 1px solid var(--accent-primary);
}

.btn-primary:hover {
    background: #333330;
    border-color: #333330;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-muted);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--bg-secondary);
    border-color: var(--text-primary);
    transform: translateY(-1px);
}

.btn-icon {
    width: 18px;
    height: 18px;
    stroke-width: 2px;
}

/* ==========================================================================
   Header / Navbar
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(250, 249, 246, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.header-scrolled {
    padding: 4px 0;
    background: rgba(250, 249, 246, 0.95);
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
}

.navbar {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition-fast);
}

.header-scrolled .navbar {
    height: 64px;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.logo-accent {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-left: 2px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.nav-link:hover {
    color: var(--text-primary);
}

.mobile-menu-toggle {
    display: none;
    color: var(--text-primary);
}

/* Mobile menu overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26,26,24,0.3);
    backdrop-filter: blur(4px);
    z-index: 101;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-smooth);
}

.mobile-menu-panel {
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    height: 100%;
    background: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    z-index: 102;
    padding: 30px 24px;
    display: flex;
    flex-direction: column;
    gap: 40px;
    transition: right var(--transition-smooth);
}

.mobile-menu-open .mobile-menu-overlay {
    opacity: 1;
    pointer-events: auto;
}

.mobile-menu-open .mobile-menu-panel {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.mobile-nav-link {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav-link:hover {
    color: var(--text-primary);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
    padding: 160px 0 90px 0;
}

.hero-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 48px;
}

.badge-glow {
    display: inline-block;
    border-bottom: 1px solid var(--border-focus);
    padding-bottom: 4px;
    margin-bottom: 24px;
}

.badge-text {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-primary);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 4rem;
    line-height: 1.05;
    font-weight: 400;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 520px;
    line-height: 1.6;
}

.hero-ctas {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
}

.hero-trust {
    display: flex;
    gap: 28px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.trust-icon {
    width: 18px;
    height: 18px;
    color: var(--text-primary);
}

/* Hero Portrait Frame */
.hero-visual {
    display: flex;
    justify-content: center;
}

.portrait-frame {
    width: 100%;
    max-width: 360px;
    aspect-ratio: 4 / 5;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-minimal);
    padding: 16px;
    position: relative;
}

.portrait-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
    background-color: var(--bg-secondary);
}

.portrait-badge {
    position: absolute;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 12px 18px;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
    display: flex;
    flex-direction: column;
}

.portrait-badge-val {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
}

.portrait-badge-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.badge-left {
    top: 20%;
    left: -40px;
}

.badge-right {
    bottom: 20%;
    right: -40px;
}

/* ==========================================================================
   Partners Section
   ========================================================================== */
.partners-section {
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 30px 0;
    background: var(--bg-card);
}

.partners-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.partners-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.partners-logos {
    display: flex;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.partner-text {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-secondary);
}

/* ==========================================================================
   Stats Bar Section
   ========================================================================== */
.stats-bar-section {
    padding: 50px 0;
    border-bottom: 1px solid var(--border-color);
}

.stat-card {
    text-align: center;
    border-right: 1px solid var(--border-color);
}

.stat-card:last-child {
    border-right: none;
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 2.75rem;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section-header {
    max-width: 680px;
    margin: 0 auto 56px auto;
}

.section-tagline {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
    display: block;
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 400;
    line-height: 1.15;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* ==========================================================================
   Diferencial Section & SVG Chart
   ========================================================================== */
.diferencial-subtitle {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 400;
    margin-bottom: 16px;
    letter-spacing: -0.2px;
}

.diferencial-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.diferencial-bullets {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.bullet-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.bullet-icon {
    width: 18px;
    height: 18px;
    color: var(--text-primary);
}

/* Mockup Dashboard */
.diferencial-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.mockup-dashboard {
    width: 100%;
    max-width: 440px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-minimal);
    overflow: hidden;
}

.mockup-header {
    height: 36px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 6px;
}

.mockup-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: #e6e5e0;
}

.mockup-body-chart {
    padding: 24px;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}

.chart-header h4 {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.chart-val {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.chart-svg {
    width: 100%;
    height: auto;
}

/* ==========================================================================
   Cases Section
   ========================================================================== */
.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-minimal);
    transition: all var(--transition-smooth);
}

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

.case-tag {
    font-size: 0.7rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 12px;
}

.case-title {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 400;
    margin-bottom: 12px;
    letter-spacing: -0.2px;
}

.case-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

.case-stats {
    display: flex;
    justify-content: space-between;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

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

.case-val {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.case-lbl {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services-section .service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-minimal);
    transition: all var(--transition-smooth);
}

.services-section .service-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.service-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.service-icon i {
    width: 22px;
    height: 22px;
}

.service-title {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 400;
    margin-bottom: 12px;
    letter-spacing: -0.2px;
}

.service-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   ROI Calculator
   ========================================================================== */
.calculator-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-minimal);
    overflow: hidden;
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
}

.calculator-inputs {
    padding: 48px;
}

.calc-subtitle {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 28px;
    color: var(--text-primary);
}

.input-field {
    margin-bottom: 32px;
}

.input-field:last-of-type {
    margin-bottom: 0;
}

.field-labels {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.field-labels label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.field-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.range-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    border-radius: var(--radius-full);
    background: #e6e5e0;
    outline: none;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    background: var(--text-primary);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    border: 2px solid var(--bg-card);
    transition: transform var(--transition-fast);
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.field-min-max {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 6px;
}

.calculator-outputs {
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.output-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.output-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.output-row:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
}

.output-lbl {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.output-val {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 700;
}

.output-val.text-large {
    font-size: 1.6rem;
    font-weight: 700;
}

.roas-feedback-box {
    margin-top: 24px;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-grid {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: center;
    gap: 64px;
}

.portrait-container {
    width: 100%;
    max-width: 350px;
    aspect-ratio: 4 / 5;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-minimal);
}

.about-portrait {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background-color: var(--bg-secondary);
}

.about-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 18px;
    line-height: 1.6;
}

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

.about-feature-item {
    display: flex;
    gap: 16px;
}

.feature-icon {
    width: 22px;
    height: 22px;
    color: var(--text-primary);
    flex-shrink: 0;
}

.feature-info h4 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 4px;
}

.feature-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-trigger {
    width: 100%;
    padding: 20px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--text-primary);
}

.faq-icon {
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    transition: transform var(--transition-smooth);
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-smooth) cubic-bezier(0, 1, 0, 1);
}

.faq-content-inner {
    padding: 0 0 20px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Open states */
.faq-item-open .faq-trigger {
    font-weight: 700;
}

.faq-item-open .faq-icon {
    transform: rotate(180deg);
    color: var(--text-primary);
}

.faq-item-open .faq-content {
    max-height: 1000px;
    transition: max-height var(--transition-smooth) cubic-bezier(1, 0, 1, 0);
}

/* ==========================================================================
   Final CTA
   ========================================================================== */
.final-cta-section {
    border-top: 1px solid var(--border-color);
    padding: 100px 0;
}

.final-cta-title {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 400;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.final-cta-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 540px;
    margin: 0 auto 36px auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px 0;
}

.footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-info .logo {
    display: inline-block;
}

.footer-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    max-width: 320px;
    margin-top: 12px;
}

.footer-links h4, .footer-contact h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

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

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

.footer-contact p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
}

.legal-disclaimer {
    font-size: 0.7rem;
    color: var(--text-muted);
    line-height: 1.5;
    max-width: 900px;
    margin: 0 auto;
}

.copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */
@media (max-width: 1024px) {
    .hero-title { font-size: 3.2rem; }
    .calculator-grid { grid-template-columns: 1fr; }
    .calculator-outputs { border-left: none; border-top: 1px solid var(--border-color); padding: 40px; }
}

@media (max-width: 768px) {
    .section-padding { padding: 60px 0; }
    .nav-menu, .nav-cta { display: none; }
    .mobile-menu-toggle { display: block; font-size: 1.3rem; }
    
    .hero-section { padding: 120px 0 50px 0; }
    .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 32px; }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-ctas { justify-content: center; }
    .hero-trust { justify-content: center; flex-direction: column; gap: 12px; }
    .portrait-frame { margin-left: auto; margin-right: auto; max-width: 320px; }
    .badge-left { left: -20px; }
    .badge-right { right: -20px; }
    
    .partners-grid { justify-content: center; text-align: center; }
    .partners-logos { justify-content: center; gap: 24px; }
    
    .grid-4-cols { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .grid-3-cols { grid-template-columns: 1fr; }
    .grid-2-cols { grid-template-columns: 1fr; }
    
    .about-grid { grid-template-columns: 1fr; text-align: center; }
    .about-visual { order: 2; }
    .about-features { text-align: left; }
    
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .stat-card { border-right: none; border-bottom: 1px solid var(--border-color); padding-bottom: 12px; }
    .stat-card:last-child { border-bottom: none; }
}

@media (max-width: 480px) {
    html { font-size: 15px; }
    .hero-title { font-size: 2.5rem; }
    .hero-ctas { flex-direction: column; width: 100%; gap: 12px; }
    .btn { width: 100%; }
    .portrait-badge { display: none; } /* Hide floating badges on small mobile screens */
    .grid-4-cols { grid-template-columns: 1fr; }
    .calculator-inputs, .calculator-outputs { padding: 24px; }
}