/* ===== CSS Reset & Variables ===== */
:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --secondary-color: #8b5cf6;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-bg: #0a0a0f;
    --dark-surface: #111118;
    --dark-card: #1a1a24;
    --light-bg: #f8fafc;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(255, 255, 255, 0.08);
    --gradient-1: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-2: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
    --gradient-3: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

/* ===== Container ===== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    padding: 16px 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-brand .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-brand .logo i {
    font-size: 1.8rem;
    color: var(--primary-light);
}

.brand-tag {
    padding: 4px 12px;
    background: var(--gradient-1);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-login {
    padding: 10px 24px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.btn-login:hover {
    border-color: var(--primary-light);
    background: rgba(59, 130, 246, 0.1);
}

.btn-primary {
    padding: 10px 24px;
    background: var(--gradient-1);
    border: none;
    color: white;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 100px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
}

.orb-1 {
    width: 700px;
    height: 700px;
    background: var(--primary-color);
    top: -200px;
    right: -200px;
    animation: float 25s ease-in-out infinite;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--secondary-color);
    bottom: -150px;
    left: -150px;
    animation: float 20s ease-in-out infinite reverse;
}

.orb-3,
.orb-4 {
    width: 400px;
    height: 400px;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -40px) scale(1.1); }
    66% { transform: translate(-30px, 30px) scale(0.9); }
}

.pulse-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    border: 1px solid rgba(59, 130, 246, 0.1);
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite;
}

.grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.3; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.1; }
}

.hero .container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--primary-light);
    margin-bottom: 24px;
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* Hero Features */
.hero-features {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

.h-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
}

.h-feature i {
    color: var(--primary-light);
}

/* AI Demo */
.ai-demo {
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 32px;
}

.demo-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.demo-query {
    margin-bottom: 16px;
}

.query-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.query-text {
    font-family: 'Courier New', monospace;
    background: var(--dark-surface);
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--primary-light);
    font-size: 0.95rem;
}

.demo-response {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ai-answer {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--dark-surface);
    border-radius: 10px;
}

.ai-name {
    padding: 4px 12px;
    background: var(--gradient-1);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

.ai-answer.missing .ai-name {
    background: var(--gradient-3);
}

.answer-content {
    flex: 1;
}

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

.no-mention {
    color: var(--danger-color);
    font-weight: 600;
}

.demo-alert {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 12px 16px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    font-size: 0.875rem;
    color: #fca5a5;
}

/* Hero Actions */
.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-outline {
    padding: 16px 32px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    font-size: 1rem;
}

.btn-outline:hover {
    border-color: var(--primary-light);
    background: rgba(59, 130, 246, 0.1);
}

/* Hero Trust */
.hero-trust {
    text-align: center;
}

.hero-trust > span {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.trust-tags {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

.tag {
    padding: 6px 14px;
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Hero Visual - Brand Dashboard */
.hero-visual {
    position: relative;
}

.brand-dashboard {
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 24px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
}

.dash-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

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

.dash-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
}

.dash-dots span:nth-child(1) { background: #ef4444; }
.dash-dots span:nth-child(2) { background: #f59e0b; }
.dash-dots span:nth-child(3) { background: #22c55e; }

.dash-title {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.dash-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}


/* ===== Section Header ===== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--primary-light);
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* ===== Value Section ===== */
.value-section {
    padding: 100px 0;
    background: var(--dark-surface);
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.value-card {
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-light);
}

.value-card.featured {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.05) 100%);
    border-color: var(--primary-color);
}

.value-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 6px 14px;
    background: var(--gradient-1);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.value-card {
    position: relative;
}

.value-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: 16px;
    font-size: 1.75rem;
}

.value-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.value-card p {
    color: var(--text-secondary);
}

/* ===== Services Section ===== */
.services-section {
    padding: 100px 0;
}

.services-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.service-step {
    flex: 1;
    min-width: 250px;
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}

.service-step:hover {
    transform: translateY(-5px);
    border-color: var(--primary-light);
}

.step-number {
    width: 48px;
    height: 48px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: 50%;
    font-size: 1.25rem;
    font-weight: 700;
}

.step-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 14px;
    font-size: 1.5rem;
    color: var(--primary-light);
}

.service-step h3 {
    font-size: 1.125rem;
    margin-bottom: 16px;
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.step-note {
    margin-top: 12px;
    color: var(--primary-light);
    font-size: 0.875rem;
    font-style: italic;
}

.service-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1.5rem;
}

/* ===== Platforms Section ===== */
.platforms-section {
    padding: 100px 0;
    background: var(--dark-surface);
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.platform-card {
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: var(--transition);
}

.platform-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-light);
}

.platform-card.doubao:hover { border-color: #3b82f6; }
.platform-card.tongyi:hover { border-color: #8b5cf6; }
.platform-card.wenxin:hover { border-color: #ec4899; }
.platform-card.yuanbao:hover { border-color: #10b981; }
.platform-card.kimi:hover { border-color: #f59e0b; }
.platform-card.deepseek:hover { border-color: #06b6d4; }

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

.platform-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: 12px;
    font-size: 1.25rem;
}

.platform-card h3 {
    font-size: 1.125rem;
}

.platform-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 16px;
}

.platform-stats {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--dark-surface);
    border-radius: 8px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.stat-item i {
    color: var(--primary-light);
}

/* ===== Advantages Section ===== */
.advantages-section {
    padding: 100px 0;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.advantage-item {
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    transition: var(--transition);
}

.advantage-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-light);
}

.advantage-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.advantage-item h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
}

.advantage-item p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ===== Brand Dashboard ===== */
.brand-dashboard {
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 24px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
}

.metric-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--dark-surface);
    border-radius: 12px;
}

.metric-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: 12px;
    font-size: 1.25rem;
}

.metric-info {
    flex: 1;
}

.metric-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.growth-chart {
    padding: 16px;
    background: var(--dark-surface);
    border-radius: 12px;
}

.growth-chart .chart-title {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.chart-line {
    height: 100px;
    position: relative;
}

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

/* Demo Success */
.demo-success {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 12px 16px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--success-color);
}

.demo-success i {
    color: var(--success-color);
}

.mention.yes {
    color: var(--success-color);
    font-weight: 600;
}

/* ===== Solutions Section ===== */
.solutions-section {
    padding: 100px 0;
}

.roles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.role-card {
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    transition: var(--transition);
}

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

.role-card.cmo:hover { border-color: #3b82f6; }
.role-card.pr:hover { border-color: #8b5cf6; }
.role-card.seo:hover { border-color: #10b981; }

.role-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.role-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: 14px;
    font-size: 1.5rem;
}

.role-card h3 {
    font-size: 1.125rem;
}

.role-desc {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 0.875rem;
}

.role-list {
    list-style: none;
}

.role-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.role-list li i {
    color: var(--success-color);
}

/* ===== Assistant Section ===== */
.assistant-section {
    padding: 100px 0;
}

.assistant-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.assistant-text h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.assistant-text p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.assistant-features {
    list-style: none;
}

.assistant-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 24px;
}

.assistant-features li i {
    color: var(--primary-light);
    font-size: 1.25rem;
    margin-top: 2px;
}

.chat-window {
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 24px;
}

.chat-message {
    margin-bottom: 16px;
    padding: 14px 18px;
    border-radius: 16px;
    max-width: 90%;
}

.chat-message.user {
    background: var(--dark-surface);
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

.chat-message.ai {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.1));
    border-bottom-left-radius: 4px;
}

.message-text {
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ===== Dashboard Section ===== */
.dashboard-section {
    padding: 100px 0;
    background: var(--dark-surface);
}

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

.preview-mockup {
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: var(--dark-surface);
    border-bottom: 1px solid var(--border-color);
}

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

.mockup-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
}

.mockup-title {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.mockup-body {
    padding: 32px;
}

.mockup-chart {
    background: var(--dark-surface);
    border-radius: 16px;
    padding: 24px;
}

.chart-title {
    font-size: 1rem;
    margin-bottom: 24px;
}

.chart-bars {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.chart-group {
    display: flex;
    align-items: center;
    gap: 16px;
}

.group-label {
    width: 100px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.bar-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.bar {
    height: 12px;
    border-radius: 6px;
    position: relative;
}

.bar.you {
    background: var(--primary-color);
}

.bar.competitor {
    background: var(--secondary-color);
}

.chart-legend {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.legend-item i {
    font-size: 0.5rem;
}

.you-legend i { color: var(--primary-color); }
.comp-legend i { color: var(--secondary-color); }

/* ===== FAQ Section ===== */
.faq-section {
    padding: 100px 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.faq-item {
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary-light);
}

.faq-question {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.faq-question i {
    color: var(--primary-light);
    font-size: 1.25rem;
    margin-top: 2px;
}

.faq-question h3 {
    font-size: 1rem;
    font-weight: 600;
}

.faq-answer p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.cta-bg .gradient-orb {
    position: absolute;
}

.cta-bg .orb-3 {
    top: 50%;
    left: -200px;
    transform: translateY(-50%);
}

.cta-bg .orb-4 {
    top: 50%;
    right: -150px;
    transform: translateY(-50%);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.cta-form {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.cta-input {
    flex: 1;
    min-width: 200px;
    padding: 16px 20px;
    background: var(--dark-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.cta-input:focus {
    outline: none;
    border-color: var(--primary-light);
}

.cta-benefits {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.benefit-item i {
    color: var(--success-color);
}

/* ===== Contact Section ===== */
.contact-section {
    padding: 100px 0;
    background: var(--dark-surface);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 12px;
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-channels {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.channel-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.channel-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: 14px;
    font-size: 1.5rem;
}

.channel-item h4 {
    margin-bottom: 4px;
}

.channel-item p {
    color: var(--text-secondary);
    margin: 0;
}

.contact-form-wrapper {
    background: var(--dark-card);
    border-radius: 24px;
    padding: 40px;
    border: 1px solid var(--border-color);
}

.contact-form h3 {
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--dark-surface);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-group select {
    cursor: pointer;
}

.form-group textarea {
    resize: vertical;
}

.btn-full {
    width: 100%;
    padding: 16px;
}

/* ===== Footer ===== */
.footer {
    padding: 60px 0 24px;
    background: var(--dark-bg);
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-logo i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.footer-col p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-surface);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer-social a:hover {
    border-color: var(--primary-light);
    color: var(--primary-light);
}

.footer-col h4 {
    margin-bottom: 20px;
    font-size: 1rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 12px;
}

.footer-col a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-bottom a {
    color: var(--text-muted);
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-visual {
        display: none;
    }

    .hero-actions {
        justify-content: center;
    }

    .value-grid,
    .platforms-grid,
    .advantages-grid,
    .roles-grid {
        grid-template-columns: 1fr;
    }

    .services-flow {
        flex-direction: column;
    }

    .service-arrow {
        transform: rotate(90deg);
    }

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

    .tracing-content,
    .assistant-content,
    .contact-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: var(--dark-surface);
        flex-direction: column;
        padding: 80px 32px;
        transition: var(--transition);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-actions .btn-login {
        display: none;
    }

    .hamburger {
        display: flex;
    }

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

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

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

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }
}