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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border: #e2e8f0;
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 26px;
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-image {
    height: 38px;
    width: auto;
}

.footer-brand .logo-image {
    height: 48px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 31px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: color 0.2s ease;
}

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

.nav-cta {
    background: var(--gradient);
    color: white !important;
    padding: 10px 19px;
    border-radius: 7px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 29px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    padding: 40px 0 64px;
    background: linear-gradient(to bottom, #ffffff 0%, #f8fafc 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1.1fr 1.3fr;
    gap: 64px;
    align-items: center;
}

.hero-content {
    max-width: 480px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-badge {
    display: inline-block;
    padding: 6px 13px;
    background: var(--bg-tertiary);
    border-radius: 16px;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 26px;
}

.hero-title {
    font-size: 51px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 26px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 38px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 13px;
    margin-bottom: 51px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 11px 22px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 13px;
    text-decoration: none;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--border);
}

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

.btn-large {
    padding: 14px 29px;
    font-size: 14px;
}

.hero-stats {
    display: flex;
    gap: 64px;
    padding-top: 48px;
    border-top: 1px solid var(--border);
}

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

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-screenshot {
    width: 100%;
    max-width: 100%;
    border-radius: 13px;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-screenshot:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 56px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(0, 0, 0, 0.05);
}

.screenshot-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 13px;
}

.browser-mockup {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    border: 1px solid var(--border);
    transform: translateY(0);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.browser-mockup:hover {
    transform: translateY(-4px);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(0, 0, 0, 0.05);
}

.browser-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.browser-dots {
    display: flex;
    gap: 6px;
}

.browser-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-light);
}

.browser-dots span:nth-child(1) {
    background: #ff5f57;
}

.browser-dots span:nth-child(2) {
    background: #ffbd2e;
}

.browser-dots span:nth-child(3) {
    background: #28ca42;
}

.browser-url {
    flex: 1;
    padding: 6px 12px;
    background: white;
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}

.browser-content {
    padding: 0;
    background: linear-gradient(135deg, #0f1419 0%, #15202b 100%);
    min-height: 500px;
    position: relative;
}

.browser-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.dark-theme {
    background: #15202b;
    color: #e7e9ea;
}

.twitter-layout {
    display: grid;
    grid-template-columns: 280px 1fr 420px;
    gap: 0;
    min-height: 520px;
}

.twitter-sidebar {
    padding: 24px 20px;
    border-right: 1px solid rgba(47, 51, 54, 0.6);
    background: rgba(15, 20, 25, 0.3);
}

.trending-section {
    margin-bottom: 24px;
}

.trending-item {
    padding: 12px 0;
    border-bottom: 1px solid #2f3336;
}

.trending-category {
    font-size: 13px;
    color: #8b98a5;
    margin-bottom: 4px;
}

.trending-topic {
    font-size: 15px;
    font-weight: 600;
    color: #e7e9ea;
    margin-bottom: 4px;
}

.trending-count {
    font-size: 13px;
    color: #8b98a5;
}

.twitter-main {
    padding: 24px 20px;
    border-right: 1px solid rgba(47, 51, 54, 0.6);
    background: rgba(15, 20, 25, 0.2);
}

.tweet-post {
    padding: 16px;
    border-bottom: 1px solid #2f3336;
}

.tweet-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.tweet-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient);
}

.tweet-info {
    flex: 1;
}

.tweet-name {
    font-weight: 600;
    color: #e7e9ea;
    margin-bottom: 2px;
}

.tweet-handle {
    font-size: 14px;
    color: #8b98a5;
}

.tweet-text {
    color: #e7e9ea;
    line-height: 1.5;
    font-size: 15px;
}

.echo-suggestions-panel {
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    background: linear-gradient(180deg, rgba(15, 20, 25, 0.5) 0%, rgba(15, 20, 25, 0.8) 100%);
    position: relative;
}

.echo-suggestions-panel::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, #6366f1 0%, #8b5cf6 100%);
    border-radius: 0 3px 3px 0;
}

.suggestion-card {
    background: linear-gradient(135deg, #1e2732 0%, #1a202c 100%);
    border: 1px solid rgba(47, 51, 54, 0.8);
    border-radius: 16px;
    padding: 24px;
    position: relative;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.suggestion-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    border-color: rgba(99, 102, 241, 0.3);
}

.suggestion-card.deep-expert {
    border-color: rgba(139, 92, 246, 0.4);
    background: linear-gradient(135deg, #1e1a2e 0%, #1a1626 100%);
}

.suggestion-card.deep-expert:hover {
    border-color: rgba(139, 92, 246, 0.6);
    box-shadow: 0 8px 20px rgba(139, 92, 246, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.suggestion-card.casual {
    border-color: rgba(29, 155, 240, 0.3);
    background: linear-gradient(135deg, #1a2732 0%, #16202a 100%);
}

.suggestion-card.casual:hover {
    border-color: rgba(29, 155, 240, 0.5);
    box-shadow: 0 8px 20px rgba(29, 155, 240, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.suggestion-card.nuanced {
    border-color: rgba(16, 185, 129, 0.3);
    background: linear-gradient(135deg, #1a2e28 0%, #162824 100%);
}

.suggestion-card.nuanced:hover {
    border-color: rgba(16, 185, 129, 0.5);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.suggestion-card.casual .suggestion-badge {
    background: linear-gradient(135deg, #1d9bf0 0%, #1a8cd8 100%);
    box-shadow: 0 2px 8px rgba(29, 155, 240, 0.3);
}

.suggestion-card.nuanced .suggestion-badge {
    background: linear-gradient(135deg, #10b981 0%, #0d9b6e 100%);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.suggestion-badge {
    display: inline-block;
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: 6px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
}

.suggestion-card .suggestion-text {
    color: #e7e9ea;
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 20px;
    font-weight: 400;
}

.suggestion-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.btn-copy,
.btn-insert {
    padding: 10px 18px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.btn-copy {
    background: linear-gradient(135deg, #1d9bf0 0%, #1a8cd8 100%);
    color: white;
}

.btn-copy:hover {
    background: linear-gradient(135deg, #1a8cd8 0%, #1680c7 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(29, 155, 240, 0.4);
}

.btn-insert {
    background: linear-gradient(135deg, #2f3336 0%, #25282d 100%);
    color: #e7e9ea;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-insert:hover {
    background: linear-gradient(135deg, #3a3f44 0%, #2f3336 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.15);
}

/* Features Section */
.features {
    padding: 64px 0 128px;
    background: var(--bg-primary);
}

.section-header {
    text-align: center;
    max-width: 560px;
    margin: 0 auto 40px;
}

.section-title {
    font-size: 38px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background: var(--bg-secondary);
    border-radius: 13px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 22px;
}

.feature-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 13px;
}

.feature-description {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Configuration Section */
.configuration {
    padding: 64px 0;
    background: var(--bg-secondary);
}

.config-preview {
    max-width: 720px;
    margin: 0 auto;
}

.config-card {
    background: #15202b;
    border-radius: 13px;
    padding: 38px;
    box-shadow: var(--shadow-xl);
}

.config-section {
    margin-bottom: 32px;
}

.config-section:last-child {
    margin-bottom: 0;
}

.config-section-title {
    font-size: 16px;
    font-weight: 700;
    color: #e7e9ea;
    margin-bottom: 22px;
}

.config-field {
    margin-bottom: 22px;
}

.config-field label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: #e7e9ea;
    margin-bottom: 6px;
}

.config-field input,
.config-field select {
    width: 100%;
    padding: 10px 13px;
    background: #1e2732;
    border: 1px solid #2f3336;
    border-radius: 6px;
    color: #e7e9ea;
    font-size: 12px;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.config-field input:focus,
.config-field select:focus {
    outline: none;
    border-color: #1d9bf0;
}

.config-field input[readonly],
.config-field select[readonly] {
    cursor: default;
}

.config-hint {
    font-size: 10px;
    color: #8b98a5;
    margin-top: 5px;
    line-height: 1.5;
}

.tone-selector {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%238b98a5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.privacy-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.privacy-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: #8b98a5;
    line-height: 1.5;
}

.privacy-item svg {
    flex-shrink: 0;
    color: #10b981;
}

/* How It Works */
.how-it-works {
    padding: 64px 0;
    background: var(--bg-primary);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 51px;
    max-width: 640px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}

.step-number {
    width: 51px;
    height: 51px;
    background: var(--gradient);
    color: white;
    border-radius: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
    padding-top: 6px;
}

.step-title {
    font-size: 19px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.step-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Testimonials */
.testimonials {
    padding: 64px 0;
    background: var(--bg-primary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.testimonial-card {
    padding: 32px;
    background: var(--bg-secondary);
    border-radius: 13px;
    border: 1px solid var(--border);
}

.testimonial-rating {
    color: #fbbf24;
    font-size: 14px;
    margin-bottom: 13px;
}

.testimonial-text {
    font-size: 13px;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 19px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--gradient);
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
    font-size: 13px;
}

.author-role {
    font-size: 11px;
    color: var(--text-secondary);
}

/* Pricing Section */
.pricing {
    padding: 64px 0;
    background: var(--bg-primary);
}

.pricing-toggle-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-bottom: 51px;
}

.pricing-toggle {
    display: flex;
    align-items: center;
    gap: 16px;
}

.toggle-label {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.toggle-label.active {
    color: var(--primary);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 56px;
    height: 32px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border);
    transition: 0.3s;
    border-radius: 32px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 24px;
    width: 24px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--gradient);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.pricing-comparison {
    margin-top: 8px;
}

.comparison-text {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 500;
}

.comparison-text svg {
    color: #10b981;
    flex-shrink: 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 26px;
    max-width: 400px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: 13px;
    padding: 38px;
    position: relative;
    transition: all 0.3s ease;
}

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

.pricing-card.featured {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: white;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.pricing-plan {
    font-size: 19px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 13px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 3px;
    margin-bottom: 6px;
}

.price-amount {
    font-size: 38px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.price-period {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.pricing-billing {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.pricing-savings {
    display: inline-block;
    background: #10b981;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    margin-top: 8px;
}

.pricing-description {
    font-size: 16px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 0;
    color: var(--text-primary);
    font-size: 13px;
    line-height: 1.5;
}

.pricing-features li svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--primary);
}

.btn-pricing {
    width: 100%;
    justify-content: center;
    font-size: 13px;
    padding: 13px 26px;
}

.pricing-note {
    text-align: center;
    margin-top: 51px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.pricing-note p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* CTA Section */
.cta-section {
    padding: 64px 0;
    background: var(--gradient);
    color: white;
    text-align: center;
}

.cta-title {
    font-size: 38px;
    font-weight: 800;
    margin-bottom: 13px;
    letter-spacing: -0.02em;
}

.cta-description {
    font-size: 16px;
    margin-bottom: 32px;
    opacity: 0.9;
}

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

.cta-content .btn-primary:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

.cta-note {
    margin-top: 24px;
    font-size: 14px;
    opacity: 0.8;
}

/* Footer */
.footer {
    padding: 61px 0 31px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 61px;
    margin-bottom: 46px;
}

.footer-brand {
    max-width: 288px;
}

.footer-tagline {
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 13px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    margin-bottom: 12px;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    padding-top: 31px;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero-title {
        font-size: 48px;
    }

    .twitter-layout {
        grid-template-columns: 1fr;
    }

    .twitter-sidebar {
        display: none;
    }

    .echo-suggestions-panel {
        border-top: 1px solid #2f3336;
    }

    .features-grid,
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
    }

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

    .hero {
        padding: 48px 0 80px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-description {
        font-size: 18px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .twitter-layout {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .twitter-sidebar {
        display: none;
    }

    .twitter-main {
        border-right: none;
        border-bottom: 1px solid #2f3336;
    }

    .echo-suggestions-panel {
        border-top: 1px solid #2f3336;
    }

    .config-card {
        padding: 24px;
    }

    .section-title {
        font-size: 32px;
    }

    .section-description {
        font-size: 18px;
    }

    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .pricing-card {
        padding: 32px 24px;
    }

    .price-amount {
        font-size: 40px;
    }

    .step {
        flex-direction: column;
        gap: 16px;
    }

    .cta-title {
        font-size: 32px;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.testimonial-card,
.step {
    animation: fadeInUp 0.6s ease-out;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

/* Legal Pages */
.legal-page {
    padding: 120px 0 80px;
    background: var(--bg-primary);
    min-height: calc(100vh - 200px);
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-secondary);
    padding: 48px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.legal-content h1 {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.legal-updated {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.legal-section {
    margin-bottom: 40px;
}

.legal-section h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    margin-top: 32px;
}

.legal-section h2:first-of-type {
    margin-top: 0;
}

.legal-section h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 24px;
    margin-bottom: 12px;
}

.legal-section p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.legal-section ul {
    margin: 16px 0;
    padding-left: 24px;
}

.legal-section li {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.legal-section li strong {
    color: var(--text-primary);
    font-weight: 600;
}

.legal-section a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.legal-section a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.legal-footer {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 2px solid var(--border);
    text-align: center;
}

.legal-footer p {
    font-size: 16px;
    color: var(--text-secondary);
    font-style: italic;
}

@media (max-width: 968px) {
    .legal-content {
        padding: 32px 24px;
    }

    .legal-content h1 {
        font-size: 36px;
    }

    .legal-section h2 {
        font-size: 24px;
    }

    .legal-section h3 {
        font-size: 18px;
    }
}

@media (max-width: 640px) {
    .legal-page {
        padding: 80px 0 60px;
    }

    .legal-content {
        padding: 24px 20px;
    }

    .legal-content h1 {
        font-size: 32px;
    }

    .legal-section h2 {
        font-size: 22px;
    }

    .legal-section p,
    .legal-section li {
        font-size: 15px;
    }
}