:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f1f3f5;
    --bg-accent: #1a73e8;
    --bg-accent-hover: #1765c7;
    --bg-dark-section: #202124;
    
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --text-accent: #1a73e8;
    --text-on-accent: #ffffff;
    --text-on-dark: #e8eaed;
    --text-subtle: #80868b;

    --border-primary: #dee2e6;
    --border-secondary: #e8eaed;
    --border-focus: #1a73e8;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.08);

    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
    --font-secondary: 'Georgia', serif;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 32px;
    --spacing-xl: 64px;
    --spacing-xxl: 128px;
    
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    
    --transition-fast: 0.15s ease-in-out;
    --transition-medium: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;

    --container-width: 1240px;
    --container-padding: 24px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1c1c1e;
        --bg-secondary: #2c2c2e;
        --bg-tertiary: #3a3a3c;
        --bg-accent: #0a84ff;
        --bg-accent-hover: #339aff;
        --bg-dark-section: #1c1c1e;

        --text-primary: #f2f2f7;
        --text-secondary: #aeaebe;
        --text-accent: #0a84ff;
        --text-on-accent: #ffffff;
        --text-on-dark: #f2f2f7;
        --text-subtle: #8d8d93;

        --border-primary: #48484a;
        --border-secondary: #38383a;
        --border-focus: #0a84ff;

        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2), 0 1px 3px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.25), 0 2px 4px -2px rgba(0, 0, 0, 0.25);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    }
}

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

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-primary);
    line-height: 1.65;
}

main {
    display: block;
    overflow-x: hidden;
}

section {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

@media (min-width: 1024px) {
    section {
        padding-top: var(--spacing-xxl);
        padding-bottom: var(--spacing-xxl);
    }
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.015em;
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 1.05rem;
}

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

a:hover {
    color: var(--bg-accent-hover);
    text-decoration: underline;
}

ul, ol {
    padding-left: 20px;
    margin-bottom: var(--spacing-md);
}

li {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

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

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    text-align: center;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: var(--spacing-xl);
    font-size: 1.15rem;
}

.button-primary,
.button-large,
.button-large-light {
    display: inline-block;
    padding: 14px 28px;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: transform var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-medium);
    border: none;
    text-decoration: none;
}

.button-primary {
    background-color: var(--bg-accent);
    color: var(--text-on-accent);
}

.button-primary:hover {
    background-color: var(--bg-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--text-on-accent);
    text-decoration: none;
}

.button-large {
    font-size: 1.1rem;
    padding: 18px 36px;
    background-color: var(--bg-accent);
    color: var(--text-on-accent);
}

.button-large:hover {
    background-color: var(--bg-accent-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--text-on-accent);
    text-decoration: none;
}

.button-large-light {
    font-size: 1.1rem;
    padding: 18px 36px;
    background-color: var(--bg-primary);
    color: var(--bg-accent);
}

.button-large-light:hover {
    background-color: var(--bg-secondary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--bg-accent-hover);
    text-decoration: none;
}

/* Header */
.site-header {
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-secondary);
    transition: background-color var(--transition-medium);
}

@media (prefers-color-scheme: dark) {
    .site-header {
        background-color: rgba(28, 28, 30, 0.75);
    }
}

.main-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
}

.logo:hover {
    text-decoration: none;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.nav-links li {
    margin: 0 var(--spacing-md);
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1rem;
    padding: var(--spacing-sm) 0;
    position: relative;
    text-decoration: none;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--bg-accent);
    transition: width var(--transition-medium);
}

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

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1010;
}

.mobile-menu-toggle .icon-bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 5px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    border-radius: 3px;
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        height: 100vh;
        background-color: var(--bg-primary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
        padding-top: 80px;
    }

    .nav-links.active {
        transform: translateX(0);
    }
    
    .nav-links li {
        margin: var(--spacing-lg) 0;
    }

    .nav-links a {
        font-size: 2rem;
    }
    
    .main-navigation .button-primary {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    body.nav-active .mobile-menu-toggle .icon-bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    body.nav-active .mobile-menu-toggle .icon-bar:nth-child(2) {
        opacity: 0;
    }
    body.nav-active .mobile-menu-toggle .icon-bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}

/* Hero Section */
.hero-section {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    background-color: var(--bg-secondary);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

@media (min-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
    }
}

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

@media (min-width: 992px) {
    .hero-text {
        text-align: left;
    }
}

.hero-text .subtitle {
    font-size: 1.25rem;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 992px) {
    .hero-text .subtitle {
        margin-left: 0;
    }
}

.hero-image img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Intro Section */
.intro-section {
    background-color: var(--bg-primary);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .intro-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.intro-card {
    padding: var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-secondary);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.intro-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.intro-card h3 {
    margin-bottom: var(--spacing-sm);
}

/* Features Section */
.features-section {
    background-color: var(--bg-tertiary);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-item {
    text-align: center;
    padding: var(--spacing-lg);
}

.feature-item .feature-icon {
    width: 48px;
    height: 48px;
    stroke: var(--text-accent);
    margin: 0 auto var(--spacing-md);
}

.feature-item h3 {
    color: var(--text-primary);
}

.feature-item p {
    font-size: 1rem;
}

/* Templates Section */
.templates-section {
    background-color: var(--bg-primary);
}

.tabs-container {
    margin-bottom: var(--spacing-xl);
}

.tab-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-secondary);
}

.tab-button {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    background-color: transparent;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    position: relative;
    transition: color var(--transition-medium);
}

.tab-button::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background-color: var(--bg-accent);
    transition: width var(--transition-medium);
}

.tab-button:hover {
    color: var(--text-primary);
}

.tab-button.active {
    color: var(--text-accent);
}

.tab-button.active::after {
    width: 100%;
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.tab-content.active {
    display: block;
}

.template-list {
    list-style: none;
    padding-left: 0;
}

.template-list li {
    padding-left: 28px;
    position: relative;
    font-size: 1.05rem;
}

.template-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 2px;
    color: var(--text-accent);
    font-weight: 700;
}

.templates-visual img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-xl);
}

/* How It Works Section */
.how-it-works-section {
    background-color: var(--bg-secondary);
}

.steps-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    position: relative;
}

@media (min-width: 768px) {
    .steps-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .steps-container {
        grid-template-columns: repeat(4, 1fr);
    }
}

.step {
    position: relative;
    padding: var(--spacing-lg);
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    color: var(--text-accent);
    border: 2px solid var(--border-primary);
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto var(--spacing-md);
    transition: background-color var(--transition-medium), color var(--transition-medium);
}

.step:hover .step-number {
    background-color: var(--bg-accent);
    color: var(--text-on-accent);
}

@media (min-width: 1024px) {
    .step:not(:last-child)::after {
        content: '';
        position: absolute;
        top: 48px;
        right: -32px;
        transform: translateY(-50%);
        width: calc(100% - 128px);
        height: 2px;
        background: repeating-linear-gradient(90deg, var(--border-primary), var(--border-primary) 6px, transparent 6px, transparent 12px);
    }
}

/* Testimonials Section */
.testimonials-section {
    background-color: var(--bg-primary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.testimonial-card p {
    font-family: var(--font-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
}

.testimonial-card p::before {
    content: '“';
    font-size: 4rem;
    color: var(--text-accent);
    float: left;
    line-height: 1;
    margin-right: var(--spacing-sm);
    margin-top: -10px;
}

.testimonial-card cite {
    font-style: normal;
    font-weight: 600;
    color: var(--text-primary);
    align-self: flex-start;
}

/* FAQ Section */
.faq-section {
    background-color: var(--bg-secondary);
}

.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-secondary);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: transparent;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
}

.accordion-header:hover {
    color: var(--text-accent);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-medium), padding var(--transition-medium);
}

.accordion-content p {
    padding: 0 var(--spacing-lg) var(--spacing-md);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 0;
}

.accordion-item.active .accordion-content {
    max-height: 500px;
    padding-bottom: var(--spacing-md);
}

.accordion-icon {
    transition: transform var(--transition-medium);
    stroke: var(--text-secondary);
    flex-shrink: 0;
    margin-left: var(--spacing-md);
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
}

.faq-link {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* Final CTA Section */
.final-cta-section {
    background-color: var(--bg-dark-section);
    color: var(--text-on-dark);
    padding: 0;
}

.final-cta-section .cta-content {
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
    min-height: 500px;
    position: relative;
}

@media (min-width: 992px) {
    .final-cta-section .cta-content {
        grid-template-columns: 1fr 1fr;
    }
}

.final-cta-section .cta-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.1;
}

@media (min-width: 992px) {
    .final-cta-section .cta-image {
        position: static;
        opacity: 1;
        object-fit: cover;
        height: 100%;
        border-radius: 0;
    }
}

.final-cta-section .cta-text {
    position: relative;
    z-index: 2;
    padding: var(--spacing-xl);
    text-align: center;
}

@media (min-width: 992px) {
    .final-cta-section .cta-text {
        text-align: left;
    }
}

.final-cta-section .cta-text h2 {
    color: var(--text-on-dark);
}

.final-cta-section .cta-text p {
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: var(--spacing-lg);
}

/* Footer */
.site-footer {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    padding-top: var(--spacing-xl);
    font-size: 0.95rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-xl);
}

@media (min-width: 576px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
    }
}

.footer-column h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.footer-column ul {
    list-style: none;
    padding-left: 0;
}

.footer-column li {
    margin-bottom: var(--spacing-sm);
}

.footer-column a {
    color: var(--text-secondary);
}

.footer-column a:hover {
    color: var(--text-accent);
    text-decoration: none;
}

.footer-column.about p, .footer-column.about a {
    font-size: 0.95rem;
}

.footer-column.contact address {
    font-style: normal;
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.footer-bottom {
    border-top: 1px solid var(--border-primary);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-bottom p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* Cookie Notice */
.cookie-notice {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-dark-section);
    color: var(--text-on-dark);
    padding: var(--spacing-md);
    z-index: 2000;
    transform: translateY(100%);
    transition: transform 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.2);
}

.cookie-notice.visible {
    transform: translateY(0);
}

.cookie-notice-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .cookie-notice-content {
        flex-direction: row;
        text-align: left;
    }
}

.cookie-notice-content h3 {
    color: var(--text-on-dark);
    margin-bottom: 0;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.cookie-notice-content p {
    margin-bottom: 0;
    font-size: 0.9rem;
    flex-grow: 1;
}

.cookie-notice-content a {
    color: var(--text-accent);
    font-weight: 600;
}

.button-cookie {
    background-color: var(--bg-accent);
    color: var(--text-on-accent);
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    font-weight: 500;
    flex-shrink: 0;
    transition: background-color var(--transition-fast);
}

.button-cookie:hover {
    background-color: var(--bg-accent-hover);
}

/* Scroll Animations */
.fade-in-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}