/* ===== CSS Variables ===== */
:root {
    --green-primary: #07C160;
    --green-light: #2DC84D;
    --green-dark: #06AD56;
    --green-glow: rgba(7, 193, 96, 0.3);
    --green-subtle: rgba(7, 193, 96, 0.08);
    --black-bg: #F5F7FA;
    --black-card: #FFFFFF;
    --black-lighter: #F0F0F0;
    --black-border: #E4E7EB;
    --black-hover: #E8EAED;
    --white: #1A1A1A;
    --white-secondary: #555555;
    --white-muted: #888888;
    --gray-text: #777777;
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.1);
    --shadow-green: 0 4px 30px rgba(7, 193, 96, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-main);
    background-color: var(--black-bg);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--green-primary), var(--green-light), #4DE98A);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--green-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 35px rgba(7, 193, 96, 0.35);
}

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

.btn-outline:hover {
    border-color: var(--green-primary);
    color: var(--green-primary);
    background: var(--green-subtle);
}

.btn-white {
    background: var(--white);
    color: var(--black-bg);
}

.btn-white:hover {
    background: var(--white-secondary);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1.05rem;
    border-radius: var(--radius-md);
}

.btn-block {
    width: 100%;
    justify-content: center;
    padding: 14px;
}

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

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--green-subtle);
    color: var(--green-primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
    border: 1px solid rgba(7, 193, 96, 0.15);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-header p {
    color: var(--white-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 10px 0;
    border-bottom: 1px solid var(--black-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--green-primary);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-size: 1rem;
}

.logo-text {
    color: var(--white);
}

.logo-highlight {
    color: var(--green-primary);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--white-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    padding: 4px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--green-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--white);
}

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

.nav-actions {
    display: flex;
    gap: 12px;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

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

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

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 120px 0 80px;
}

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

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(7, 193, 96, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(7, 193, 96, 0.06) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 100%);
}

.hero-glow {
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(7, 193, 96, 0.12) 0%, transparent 70%);
    filter: blur(40px);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--green-subtle);
    border: 1px solid rgba(7, 193, 96, 0.2);
    border-radius: 50px;
    color: var(--green-primary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 32px;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.5;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 2.2rem;
    font-weight: 700;
    white-space: nowrap;
}

.hero-desc {
    color: var(--white-secondary);
    font-size: 1.15rem;
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 12px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    padding: 30px 40px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid var(--black-border);
    border-radius: var(--radius-lg);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--green-primary);
}

.stat-label {
    color: var(--white-secondary);
    font-size: 0.85rem;
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--black-border);
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.hero-scroll a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--black-border);
    color: var(--white-secondary);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* ===== Partners ===== */
.partners {
    padding: 40px 0;
    border-top: 1px solid var(--black-border);
    border-bottom: 1px solid var(--black-border);
    background: var(--black-card);
    overflow: hidden;
}

.partners-label {
    text-align: center;
    color: var(--white-muted);
    font-size: 0.85rem;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.partners-track {
    display: flex;
    animation: scroll-partners 30s linear infinite;
}

.partners-slide {
    display: flex;
    gap: 50px;
    flex-shrink: 0;
    padding: 0 25px;
}

.partner-item {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white-muted);
    white-space: nowrap;
    opacity: 0.5;
    transition: var(--transition);
}

.partner-item:hover {
    opacity: 1;
    color: var(--green-primary);
}

@keyframes scroll-partners {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ===== Features ===== */
.features {
    padding: 120px 0;
}

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

.feature-card {
    position: relative;
    padding: 36px;
    background: var(--black-card);
    border: 1px solid var(--black-border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: transparent;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: rgba(7, 193, 96, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-green);
}

.feature-card:hover::before {
    background: linear-gradient(90deg, var(--green-primary), var(--green-light));
}

.feature-card.featured {
    border-color: rgba(7, 193, 96, 0.3);
    background: linear-gradient(135deg, rgba(7, 193, 96, 0.06), var(--black-card));
}

.feature-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    background: var(--green-primary);
    color: var(--white);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-subtle);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    font-size: 1.4rem;
    color: var(--green-primary);
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--green-primary);
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--white-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.feature-tags span {
    padding: 4px 12px;
    background: var(--black-lighter);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--gray-text);
    border: 1px solid var(--black-border);
}

/* ===== Models ===== */
.models {
    padding: 120px 0;
    background: var(--black-card);
}

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

.model-category {
    padding: 30px;
    background: var(--black-bg);
    border: 1px solid var(--black-border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.model-category:hover {
    border-color: rgba(7, 193, 96, 0.3);
}

.model-category h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--white);
}

.model-category h4 i {
    color: var(--green-primary);
}

.model-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.model-tag {
    padding: 6px 14px;
    background: var(--black-lighter);
    border: 1px solid var(--black-border);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--white-secondary);
    transition: var(--transition);
    cursor: default;
}

.model-tag:hover {
    border-color: var(--green-primary);
    color: var(--green-primary);
    background: var(--green-subtle);
}

/* ===== How It Works ===== */
.how-it-works {
    padding: 120px 0;
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    margin-bottom: 60px;
}

.step-card {
    flex: 1;
    max-width: 300px;
    text-align: center;
    padding: 36px 24px;
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    color: rgba(7, 193, 96, 0.15);
    margin-bottom: 16px;
    line-height: 1;
}

.step-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-subtle);
    border: 1px solid rgba(7, 193, 96, 0.2);
    border-radius: 50%;
    margin: 0 auto 20px;
    font-size: 1.4rem;
    color: var(--green-primary);
}

.step-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.step-card p {
    color: var(--white-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.step-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding-top: 60px;
    gap: 8px;
    color: var(--green-primary);
}

.connector-line {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--green-primary), transparent);
}

/* Code Demo */
.code-demo {
    max-width: 700px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--black-border);
    background: #1E2030;
}

.code-header {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    background: #171923;
    border-bottom: 1px solid #2D3148;
}

.code-dots {
    display: flex;
    gap: 8px;
    margin-right: 16px;
}

.code-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #FF5F56; }
.dot.yellow { background: #FFBD2E; }
.dot.green { background: #27C93F; }

.code-title {
    flex: 1;
    color: var(--gray-text);
    font-size: 0.85rem;
}

.code-copy {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: transparent;
    border: 1px solid #2D3148;
    border-radius: var(--radius-sm);
    color: #8B949E;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.code-copy:hover {
    border-color: var(--green-primary);
    color: var(--green-primary);
}

.code-copy.copied {
    border-color: var(--green-primary);
    color: var(--green-primary);
}

.code-body {
    padding: 24px;
    margin: 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
    color: #E6EDF3;
}

.code-comment { color: #8B949E; }
.code-keyword { color: #FF7B72; }
.code-string { color: #A5D6FF; }

/* ===== Enterprise ===== */
.enterprise {
    padding: 120px 0;
}

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

.enterprise-info .section-tag {
    margin-bottom: 20px;
}

.enterprise-info h2 {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 16px;
}

.enterprise-info > p {
    color: var(--white-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 36px;
}

.enterprise-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.enterprise-features li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.enterprise-features li i {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-subtle);
    border-radius: var(--radius-md);
    color: var(--green-primary);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.enterprise-features li strong {
    display: block;
    font-size: 1rem;
    margin-bottom: 4px;
}

.enterprise-features li p {
    color: var(--white-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Dashboard Mockup */
.dashboard-mockup {
    background: var(--black-card);
    border: 1px solid var(--black-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

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

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

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

.mockup-dots span:first-child { background: #FF5F56; }
.mockup-dots span:nth-child(2) { background: #FFBD2E; }
.mockup-dots span:last-child { background: #27C93F; }

.mockup-header span {
    color: var(--gray-text);
    font-size: 0.8rem;
}

.mockup-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 8px;
    border-right: 1px solid var(--black-border);
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--gray-text);
    font-size: 0.8rem;
    transition: var(--transition);
}

.sidebar-item.active {
    background: var(--green-subtle);
    color: var(--green-primary);
}

.sidebar-item i {
    width: 16px;
    text-align: center;
}

.mockup-content {
    padding: 16px;
}

.mockup-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}

.m-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: var(--black-lighter);
    border-radius: var(--radius-sm);
    border: 1px solid var(--black-border);
}

.m-card-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}

.m-card-icon.green {
    background: var(--green-subtle);
    color: var(--green-primary);
}

.m-card-icon.blue {
    background: rgba(59, 130, 246, 0.1);
    color: #3B82F6;
}

.m-card-label {
    display: block;
    font-size: 0.7rem;
    color: var(--gray-text);
    margin-bottom: 2px;
}

.m-card-value {
    display: block;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--white);
}

.mockup-chart {
    background: var(--black-lighter);
    border-radius: var(--radius-sm);
    padding: 16px;
    border: 1px solid var(--black-border);
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    height: 100px;
}

.chart-bars .bar {
    flex: 1;
    background: linear-gradient(to top, var(--green-primary), var(--green-light));
    border-radius: 4px 4px 0 0;
    opacity: 0.7;
    transition: var(--transition);
}

.chart-bars .bar:hover {
    opacity: 1;
}

/* ===== Agency ===== */
.agency {
    padding: 120px 0;
    background: var(--black-card);
}

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

.agency-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.agency-features li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.agency-features li i {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-subtle);
    border-radius: var(--radius-md);
    color: var(--green-primary);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.agency-features li strong {
    display: block;
    font-size: 1rem;
    margin-bottom: 4px;
}

.agency-features li p {
    color: var(--white-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.agency-mockup .mockup-sidebar {
    border-right: 1px solid var(--black-border);
}

.agency-link-demo {
    background: var(--black-lighter);
    border-radius: var(--radius-sm);
    padding: 14px;
    border: 1px solid var(--black-border);
    margin-top: 4px;
}

.link-label {
    font-size: 0.75rem;
    color: var(--gray-text);
    margin-bottom: 8px;
}

.link-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--black-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--black-border);
    margin-bottom: 10px;
}

.link-box span {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--green-primary);
    word-break: break-all;
}

.link-copy {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: transparent;
    border: 1px solid var(--black-border);
    border-radius: 6px;
    color: var(--gray-text);
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.link-copy:hover {
    border-color: var(--green-primary);
    color: var(--green-primary);
}

.link-meta {
    display: flex;
    gap: 16px;
    font-size: 0.72rem;
    color: var(--gray-text);
}

.link-meta i {
    margin-right: 4px;
    color: var(--green-primary);
}

.agency-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 60px;
}

@media (max-width: 1024px) {
    .agency-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .agency-cta {
        flex-direction: column;
        align-items: center;
    }
}

/* ===== CTA ===== */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(7, 193, 96, 0.1), rgba(7, 193, 96, 0.02));
    border-top: 1px solid rgba(7, 193, 96, 0.1);
    border-bottom: 1px solid rgba(7, 193, 96, 0.1);
}

.cta-content {
    text-align: center;
}

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

.cta-content p {
    color: var(--white-secondary);
    font-size: 1.1rem;
    margin-bottom: 36px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* ===== Footer ===== */
.footer {
    padding: 80px 0 30px;
    background: var(--black-card);
    border-top: 1px solid var(--black-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--gray-text);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 20px;
    max-width: 280px;
}

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

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--black-lighter);
    border: 1px solid var(--black-border);
    border-radius: var(--radius-sm);
    color: var(--gray-text);
    font-size: 1rem;
    transition: var(--transition);
}

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

.footer-links h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--white);
}

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

.footer-links a {
    color: var(--gray-text);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--green-primary);
    padding-left: 4px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--black-border);
    text-align: center;
}

.footer-bottom p {
    color: var(--white-muted);
    font-size: 0.85rem;
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow-green);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--green-light);
    transform: translateY(-2px);
}

/* ===== Customer Service ===== */
.customer-service {
    position: fixed;
    bottom: 90px;
    right: 30px;
    z-index: 998;
}

.cs-btn {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.3rem;
    box-shadow: 0 4px 16px rgba(7, 193, 96, 0.35);
    transition: var(--transition);
    position: relative;
}

.cs-btn::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid rgba(7, 193, 96, 0.3);
    animation: cs-pulse 2s infinite;
}

@keyframes cs-pulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.3); opacity: 0; }
}

.cs-btn:hover {
    background: var(--green-light);
    transform: scale(1.08);
}

.cs-panel {
    position: absolute;
    bottom: 64px;
    right: 0;
    width: 260px;
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.12);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.cs-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.cs-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    background: var(--green-primary);
    color: #FFFFFF;
    font-size: 0.95rem;
    font-weight: 600;
}

.cs-close {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    font-size: 1rem;
    padding: 2px;
    transition: var(--transition);
}

.cs-close:hover {
    color: #FFFFFF;
}

.cs-panel-body {
    padding: 20px;
    text-align: center;
}

.cs-panel-body > p:first-child {
    color: #333;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 14px;
}

.cs-qr {
    width: 180px;
    height: 180px;
    margin: 0 auto 14px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid #E4E7EB;
    background: #F5F7FA;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cs-qr img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cs-hint {
    color: #999;
    font-size: 0.78rem;
}

@media (max-width: 768px) {
    .customer-service {
        bottom: 80px;
        right: 16px;
    }

    .cs-panel {
        right: -10px;
        width: 240px;
    }
}

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

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .enterprise-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        padding: 20px 24px;
        gap: 16px;
        border-bottom: 1px solid var(--black-border);
    }

    .mobile-toggle {
        display: flex;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
        padding: 20px;
    }

    .stat-divider {
        display: none;
    }

    .stat-item {
        width: 40%;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

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

    .models-showcase {
        grid-template-columns: 1fr;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .steps {
        flex-direction: column;
        align-items: center;
    }

    .step-connector {
        flex-direction: row;
        padding-top: 0;
    }

    .connector-line {
        width: 2px;
        height: 40px;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .enterprise-info h2 {
        font-size: 2rem;
    }

    .cta-content h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.6rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .hero-desc {
        font-size: 1rem;
    }

    .hero-stats {
        gap: 16px;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 16px;
    }
}