/* ========================================
   AI数智营销 - 样式表
   ======================================== */

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

:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #0f1435;
    --bg-card: rgba(15, 20, 55, 0.8);
    --bg-card-hover: rgba(20, 28, 70, 0.9);
    --accent-cyan: #00d4ff;
    --accent-purple: #7b2ff7;
    --accent-blue: #3b82f6;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);
    --border-color: rgba(255, 255, 255, 0.08);
    --gradient-main: linear-gradient(135deg, #00d4ff, #7b2ff7);
    --gradient-bg: linear-gradient(180deg, #0a0e27 0%, #0f1435 50%, #0a0e27 100%);
    --font-main: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --container-width: 1200px;
    --section-padding: 120px 0;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

ul {
    list-style: none;
}

.section {
    padding: var(--section-padding);
    position: relative;
}

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

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: var(--font-main);
}

.btn-primary {
    background: var(--gradient-main);
    color: #fff;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 30px rgba(0, 212, 255, 0.5);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 212, 255, 0.4);
}

.btn-outline:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--accent-cyan);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
}

/* --- Section Headers --- */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 2px;
    color: var(--accent-cyan);
    margin-bottom: 20px;
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.3;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a {
    padding: 8px 16px;
    font-size: 14px;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.btn-nav {
    background: var(--gradient-main) !important;
    color: #fff !important;
    border-radius: 50px !important;
    padding: 8px 24px !important;
    font-weight: 500 !important;
}

.btn-nav:hover {
    box-shadow: 0 4px 16px rgba(0, 212, 255, 0.3);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

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

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

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(123, 47, 247, 0.06) 0%, transparent 50%);
    animation: heroGlow 15s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(-5%, 3%) rotate(3deg); }
}

#particleCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.hero-content {
    position: relative;
    text-align: center;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 50px;
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--accent-cyan);
    margin-bottom: 32px;
    font-weight: 500;
}

.hero-title {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-title .gradient-text {
    font-size: 72px;
}

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

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

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--accent-cyan);
    font-variant-numeric: tabular-nums;
}

.stat-plus {
    font-size: 20px;
    color: var(--accent-cyan);
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.hero-scroll-hint {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-arrow {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    position: relative;
}

.scroll-arrow::after {
    content: '';
    width: 4px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { top: 6px; opacity: 1; }
    50% { top: 20px; opacity: 0.3; }
}

/* ========================================
   Services
   ======================================== */
.services {
    background: var(--gradient-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.service-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.2);
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-main);
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover .card-glow {
    opacity: 1;
}

.service-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-card > p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.feature-list {
    margin-bottom: 24px;
}

.feature-list li {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}

.feature-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-cyan);
    opacity: 0.6;
}

.card-link {
    font-size: 14px;
    color: var(--accent-cyan);
    font-weight: 500;
}

.card-link:hover {
    color: #fff;
}

.b2c-card {
    grid-column: span 1;
    border-color: rgba(123, 47, 247, 0.2);
}

.b2c-card:hover {
    border-color: rgba(123, 47, 247, 0.4);
}

/* ========================================
   Platform
   ======================================== */
.platform {
    background: var(--bg-primary);
    position: relative;
}

.platform::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.03) 0%, transparent 60%);
}

.platform-showcase {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.platform-center {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    height: 400px;
}

.platform-core {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    position: relative;
    z-index: 2;
    box-shadow: 0 0 60px rgba(0, 212, 255, 0.3);
    animation: corePulse 3s ease-in-out infinite;
}

@keyframes corePulse {
    0%, 100% { box-shadow: 0 0 60px rgba(0, 212, 255, 0.3); }
    50% { box-shadow: 0 0 80px rgba(0, 212, 255, 0.5), 0 0 120px rgba(123, 47, 247, 0.2); }
}

.platform-ring {
    position: absolute;
    width: 360px;
    height: 360px;
    border: 1px solid rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    animation: ringRotate 30s linear infinite;
}

@keyframes ringRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.platform-node {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.node-circle {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    color: #fff;
    background: var(--bg-secondary);
    border: 1px solid rgba(0, 212, 255, 0.3);
    transition: var(--transition);
}

.platform-node:hover .node-circle {
    background: rgba(0, 212, 255, 0.15);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.node-label {
    font-size: 11px;
    color: var(--text-muted);
    white-space: nowrap;
}

.node-scrm { top: -32px; left: 50%; transform: translateX(-50%); }
.node-cdp { right: -32px; top: 50%; transform: translateY(-50%); }
.node-ma { bottom: -32px; left: 50%; transform: translateX(-50%); }
.node-ai { left: -32px; top: 50%; transform: translateY(-50%); }

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

.pf-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.pf-item:hover {
    background: var(--bg-card-hover);
    border-color: rgba(0, 212, 255, 0.15);
}

.pf-icon {
    font-size: 24px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.pf-item h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.pf-item p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   Advantages
   ======================================== */
.advantages {
    background: var(--gradient-bg);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

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

.adv-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-main);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.adv-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.adv-card:hover::after {
    transform: scaleX(1);
}

.adv-number {
    font-size: 48px;
    font-weight: 900;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.15;
    line-height: 1;
    margin-bottom: 12px;
}

.adv-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.adv-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.adv-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
    padding: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

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

.adv-stat-num {
    font-size: 42px;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.adv-stat-unit {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ========================================
   Cases
   ======================================== */
.cases {
    background: var(--bg-primary);
}

.case-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
}

.tab-btn {
    padding: 10px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-main);
}

.tab-btn:hover {
    color: var(--text-primary);
    border-color: rgba(0, 212, 255, 0.3);
}

.tab-btn.active {
    background: var(--gradient-main);
    border-color: transparent;
    color: #fff;
}

.case-panel {
    display: none;
}

.case-panel.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 48px;
}

.case-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.case-header h3 {
    font-size: 24px;
    font-weight: 600;
}

.case-tag {
    padding: 6px 16px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 50px;
    font-size: 12px;
    color: var(--accent-cyan);
}

.case-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 700px;
}

.case-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-md);
    min-width: 120px;
    transition: var(--transition);
}

.flow-step:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: rgba(0, 212, 255, 0.2);
}

.flow-icon {
    font-size: 24px;
}

.flow-step span {
    font-size: 12px;
    color: var(--text-secondary);
}

.flow-arrow {
    color: var(--accent-cyan);
    opacity: 0.5;
    font-size: 18px;
}

.case-results {
    display: flex;
    justify-content: center;
    gap: 48px;
}

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

.result-value {
    display: block;
    font-size: 32px;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.result-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* ========================================
   CTA
   ======================================== */
.cta {
    background: var(--gradient-bg);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.06) 0%, transparent 60%);
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 80px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
}

.cta-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
}

.cta-subtitle {
    font-size: 20px;
    color: var(--accent-cyan);
    margin-bottom: 12px;
}

.cta-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 36px;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.cta-phone {
    font-size: 14px;
    color: var(--text-muted);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

.footer-links h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-links a:hover {
    color: var(--accent-cyan);
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ========================================
   Sub-page Banner
   ======================================== */
.page-banner {
    padding: 160px 0 80px;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 60% 50%, rgba(0, 212, 255, 0.06) 0%, transparent 50%),
                radial-gradient(circle at 30% 70%, rgba(123, 47, 247, 0.04) 0%, transparent 50%);
}

.page-banner .container {
    position: relative;
    z-index: 2;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    font-size: 13px;
    color: var(--text-muted);
}

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

.breadcrumb a:hover {
    color: var(--accent-cyan);
}

.breadcrumb .sep {
    opacity: 0.4;
}

.breadcrumb .current {
    color: var(--accent-cyan);
}

.page-banner h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.3;
}

.page-banner .page-desc {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
}

/* --- Sub-page Content --- */
.page-content {
    padding: 80px 0;
    background: var(--bg-primary);
}

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

.content-grid.reverse {
    direction: rtl;
}

.content-grid.reverse > * {
    direction: ltr;
}

.content-text h2 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.4;
}

.content-text p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.content-text ul {
    margin: 20px 0;
}

.content-text li {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 10px 0;
    padding-left: 24px;
    position: relative;
    line-height: 1.6;
}

.content-text li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gradient-main);
}

.content-visual {
    position: relative;
}

.content-image {
    width: 100%;
    height: 400px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    position: relative;
    overflow: hidden;
}

.content-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
}

/* --- Feature Blocks --- */
.feature-blocks {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.feature-block {
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.feature-block:hover {
    background: var(--bg-card-hover);
    border-color: rgba(0, 212, 255, 0.15);
    transform: translateY(-2px);
}

.feature-block .fb-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.feature-block h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

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

/* --- Process Steps --- */
.process-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    max-width: 700px;
    margin: 0 auto;
}

.process-steps::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple));
    opacity: 0.3;
}

.process-step {
    display: flex;
    gap: 24px;
    padding: 28px 0;
    position: relative;
}

.step-num {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid rgba(0, 212, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    color: var(--accent-cyan);
    flex-shrink: 0;
    z-index: 1;
}

.step-content h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.step-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* --- Data Cards --- */
.data-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

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

.data-card:hover {
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateY(-2px);
}

.data-card .dc-value {
    font-size: 36px;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.data-card .dc-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 8px;
}

/* --- Team Grid --- */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

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

.team-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.team-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 2px solid rgba(0, 212, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 16px;
}

.team-card h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.team-card .team-role {
    font-size: 13px;
    color: var(--accent-cyan);
    margin-bottom: 8px;
}

.team-card .team-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* --- Timeline --- */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple));
    opacity: 0.2;
}

.timeline-item {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
    position: relative;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
    text-align: right;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 20px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-cyan);
    border: 2px solid var(--bg-primary);
    z-index: 1;
}

.timeline-content {
    flex: 1;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.timeline-year {
    font-size: 14px;
    color: var(--accent-cyan);
    font-weight: 600;
    margin-bottom: 8px;
}

.timeline-content h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* --- News Grid --- */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.2);
}

.news-thumb {
    height: 180px;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
}

.news-body {
    padding: 20px;
}

.news-date {
    font-size: 12px;
    color: var(--accent-cyan);
    margin-bottom: 8px;
}

.news-body h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.5;
}

.news-body p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* --- Contact Form --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

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

.ci-card {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.ci-card:hover {
    border-color: rgba(0, 212, 255, 0.2);
}

.ci-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(0, 212, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.ci-card h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.ci-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.contact-form {
    padding: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.contact-form h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font-main);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

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

.form-submit {
    width: 100%;
    padding: 14px;
    background: var(--gradient-main);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font-main);
    transition: var(--transition);
}

.form-submit:hover {
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.4);
    transform: translateY(-1px);
}

/* --- Map placeholder --- */
.map-placeholder {
    width: 100%;
    height: 300px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    margin-top: 40px;
}

/* --- Platform Module Detail --- */
.module-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

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

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

.module-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.module-card:hover::before {
    opacity: 1;
}

.module-card .mc-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.module-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
}

.module-card .mc-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.module-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.module-features span {
    padding: 6px 14px;
    background: rgba(0, 212, 255, 0.06);
    border: 1px solid rgba(0, 212, 255, 0.12);
    border-radius: 50px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* --- Case Detail Cards --- */
.case-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.case-detail-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 36px;
    transition: var(--transition);
}

.case-detail-card:hover {
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateY(-2px);
}

.case-detail-card .cdc-industry {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50px;
    font-size: 12px;
    color: var(--accent-cyan);
    margin-bottom: 16px;
}

.case-detail-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.case-detail-card .cdc-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.case-detail-card .cdc-results {
    display: flex;
    gap: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.cdc-result {
    text-align: center;
    flex: 1;
}

.cdc-result .value {
    font-size: 22px;
    font-weight: 700;
    color: var(--accent-cyan);
}

.cdc-result .label {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* --- Solutions Sub-nav --- */
.sol-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.sol-tab {
    padding: 12px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    font-family: var(--font-main);
}

.sol-tab:hover {
    color: var(--text-primary);
    border-color: rgba(0, 212, 255, 0.3);
}

.sol-tab.active {
    background: var(--gradient-main);
    border-color: transparent;
    color: #fff;
}

/* --- CTA Inline --- */
.inline-cta {
    text-align: center;
    padding: 60px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    margin-top: 60px;
}

.inline-cta h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
}

.inline-cta p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

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

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

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

    .platform-showcase {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .platform-center {
        height: 350px;
    }

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

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

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

    .hero-title .gradient-text {
        font-size: 52px;
    }

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

    .content-grid.reverse {
        direction: ltr;
    }

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

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

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

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

    .case-detail-grid {
        grid-template-columns: 1fr;
    }

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

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

    .page-banner h1 {
        font-size: 34px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 0;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 14, 39, 0.98);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 16px;
        z-index: 999;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        font-size: 18px;
        padding: 12px 24px;
    }

    .mobile-toggle {
        display: flex;
        z-index: 1001;
    }

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

    .hero-title .gradient-text {
        font-size: 40px;
    }

    .hero-desc {
        font-size: 15px;
    }

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

    .stat-number {
        font-size: 28px;
    }

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

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

    .adv-stats {
        flex-wrap: wrap;
        gap: 32px;
        padding: 32px;
    }

    .section-title {
        font-size: 28px;
    }

    .case-card {
        padding: 28px;
    }

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

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

    .case-results {
        gap: 32px;
    }

    .cta-content {
        padding: 40px 24px;
    }

    .cta-content h2 {
        font-size: 28px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

    .page-banner {
        padding: 130px 0 60px;
    }

    .page-banner h1 {
        font-size: 28px;
    }

    .feature-blocks {
        grid-template-columns: 1fr;
    }

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

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

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

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

    .inline-cta {
        padding: 40px 24px;
    }

    .timeline::before {
        left: 24px;
    }

    .timeline-item {
        flex-direction: row !important;
        text-align: left !important;
        padding-left: 0;
    }

    .timeline-item::before {
        left: 24px;
    }

    .timeline-item:nth-child(even) {
        flex-direction: row !important;
        text-align: left !important;
    }

    .sol-tabs {
        justify-content: center;
    }

    .cdc-results {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 30px;
    }

    .hero-title .gradient-text {
        font-size: 34px;
    }

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

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

    .data-cards {
        grid-template-columns: 1fr;
    }

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