/* ============================================
   HCS Linkage Technology - Official Website
   Modern Tech Company Design
   ============================================ */

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

:root {
    /* Colors */
    --bg-dark: #060B18;
    --bg-darker: #030611;
    --bg-card: #0E1424;
    --bg-card-hover: #141B2E;
    --bg-light: #F7F9FC;
    --bg-white: #FFFFFF;
    
    --text-primary: #FFFFFF;
    --text-secondary: #A0AEC0;
    --text-tertiary: #6B7280;
    --text-dark: #1A202C;
    --text-dark-secondary: #4A5568;
    
    --accent-cyan: #00D4FF;
    --accent-blue: #0066FF;
    --accent-purple: #7C3AED;
    --accent-teal: #14B8A6;
    --accent-orange: #F59E0B;
    --accent-red: #EF4444;
    
    --gradient-primary: linear-gradient(135deg, #00D4FF 0%, #0066FF 100%);
    --gradient-accent: linear-gradient(135deg, #00D4FF 0%, #7C3AED 100%);
    --gradient-dark: linear-gradient(180deg, #060B18 0%, #030611 100%);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-light: rgba(0, 0, 0, 0.06);
    
    /* Spacing */
    --container-max: 1200px;
    --section-padding: 100px 0;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-card-light: 0 4px 24px rgba(0, 0, 0, 0.06);
}

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

body[lang="zh-TW"], body[lang="zh-TW"] * {
    font-family: 'Inter', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    font-family: 'Inter', 'Noto Sans SC', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    font-family: inherit;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #FFFFFF;
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.45);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

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

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

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

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(6, 11, 24, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    display: flex;
    align-items: center;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-title {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.logo-sub {
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
    border-radius: 2px;
}

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

.nav-cta {
    padding: 8px 20px;
    border-radius: 8px;
    background: var(--gradient-primary);
    color: #FFFFFF !important;
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.3);
}

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

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

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

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

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

/* Language Switcher */
.nav-lang-item {
    list-style: none;
    position: relative;
}

.lang-switcher {
    position: relative;
}

.lang-current {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.lang-current:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 212, 255, 0.3);
    color: var(--text-primary);
}

.lang-current svg {
    flex-shrink: 0;
    opacity: 0.7;
}

.lang-label {
    font-weight: 500;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 140px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 6px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition);
    z-index: 100;
}

.lang-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    width: 100%;
    text-align: left;
    padding: 8px 14px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition);
}

.lang-option:hover {
    background: rgba(0, 212, 255, 0.08);
    color: var(--text-primary);
}

.lang-option.active {
    color: var(--accent-cyan);
    font-weight: 600;
}

.lang-option.active::before {
    content: '\2713 ';
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding: 120px 24px 80px;
}

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

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #0066FF 0%, transparent 70%);
    top: -100px;
    left: -100px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #00D4FF 0%, transparent 70%);
    bottom: -50px;
    right: -50px;
    animation-delay: -7s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #7C3AED 0%, transparent 70%);
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
    opacity: 0.25;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 100px;
    font-size: 0.82rem;
    color: var(--accent-cyan);
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: 0 0 10px var(--accent-cyan);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

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

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

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 40px;
}

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

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
}

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

.stat-num {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-unit {
    font-size: 1.2rem;
    font-weight: 600;
}

.stat-label {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    margin-top: 8px;
}

.hero-stat-divider {
    width: 1px;
    height: 50px;
    background: var(--border-color);
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-tertiary);
    font-size: 0.75rem;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent-cyan), transparent);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    50.1% { transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================
   Sections Common
   ============================================ */
.section {
    padding: var(--section-padding);
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.subsection-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 32px;
    text-align: center;
}

.subsection-title.center {
    text-align: center;
}

/* ============================================
   About Section
   ============================================ */
.section-about {
    background: var(--bg-dark);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 80px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.about-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--shadow-glow);
}

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

.about-card-accent::before {
    background: var(--gradient-accent);
    opacity: 1;
}

.about-card-icon {
    color: var(--accent-cyan);
    margin-bottom: 20px;
}

.about-card-accent .about-card-icon {
    color: var(--accent-purple);
}

.about-card-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 16px;
}

.about-card-accent .about-card-tag {
    background: rgba(124, 58, 237, 0.1);
    color: var(--accent-purple);
}

.about-card-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.3;
}

.about-card-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.about-card-meta span {
    font-size: 0.82rem;
    color: var(--text-secondary);
    padding: 3px 10px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 4px;
}

.about-card-desc {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.7;
    margin-bottom: 24px;
}

.about-card-stats {
    display: flex;
    gap: 20px;
}

.mini-stat {
    flex: 1;
}

.mini-stat-num {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

.about-card-accent .mini-stat-num {
    color: var(--accent-purple);
}

.mini-stat-label {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    margin-top: 4px;
}

/* Advantages */
.advantages-section {
    margin-bottom: 80px;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

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

.advantage-item:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
}

.advantage-num {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.advantage-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.advantage-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Certifications */
.certifications-section {
    margin-bottom: 60px;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 24px;
    transition: var(--transition);
}

.cert-item:hover {
    border-color: rgba(0, 212, 255, 0.3);
}

.cert-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.08);
    border-radius: 12px;
    color: var(--accent-cyan);
}

.cert-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.cert-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Founder */
.founder-section {
    margin-top: 40px;
}

.founder-card {
    display: flex;
    align-items: center;
    gap: 32px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, rgba(124, 58, 237, 0.05) 100%);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
}

.founder-avatar {
    flex-shrink: 0;
}

.founder-label {
    font-size: 0.8rem;
    color: var(--accent-cyan);
    font-weight: 600;
    margin-bottom: 4px;
}

.founder-name {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.founder-desc {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.7;
}

/* ============================================
   Solutions Section
   ============================================ */
.section-solutions {
    background: var(--bg-darker);
}

.pain-points {
    margin-bottom: 80px;
}

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

.pain-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
}

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

.pain-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    margin-bottom: 20px;
}

.pain-icon-1 {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.pain-icon-2 {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-orange);
}

.pain-icon-3 {
    background: rgba(124, 58, 237, 0.1);
    color: var(--accent-purple);
}

.pain-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.pain-card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.6;
}

/* Lifecycle */
.lifecycle-section {
    margin-bottom: 40px;
}

.lifecycle-flow {
    display: flex;
    align-items: stretch;
    gap: 0;
}

.lifecycle-item {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    position: relative;
    transition: var(--transition);
}

.lifecycle-item:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
}

.lifecycle-step {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}

.lifecycle-content h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.lifecycle-content p {
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.6;
}

.lifecycle-connector {
    width: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.lifecycle-connector::after {
    content: '';
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, var(--accent-cyan), transparent);
}

/* ============================================
   Product Section
   ============================================ */
.section-product {
    background: var(--bg-dark);
}

.product-vision {
    margin-bottom: 64px;
}

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

.vision-item {
    text-align: center;
    padding: 36px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: var(--transition);
}

.vision-item:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-4px);
}

.vision-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.08);
    border-radius: 14px;
    color: var(--accent-cyan);
}

.vision-item h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.vision-item p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* Modules */
.modules-section {
    margin-bottom: 64px;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.module-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px 20px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.module-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    opacity: 0;
    transition: var(--transition);
}

.module-card:hover {
    transform: translateY(-4px);
    border-color: transparent;
}

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

.module-card-1::after { background: var(--accent-cyan); }
.module-card-2::after { background: var(--accent-blue); }
.module-card-3::after { background: var(--accent-purple); }
.module-card-4::after { background: var(--accent-teal); }
.module-card-5::after { background: var(--accent-orange); }

.module-card-1:hover { box-shadow: 0 8px 30px rgba(0, 212, 255, 0.15); }
.module-card-2:hover { box-shadow: 0 8px 30px rgba(0, 102, 255, 0.15); }
.module-card-3:hover { box-shadow: 0 8px 30px rgba(124, 58, 237, 0.15); }
.module-card-4:hover { box-shadow: 0 8px 30px rgba(20, 184, 166, 0.15); }
.module-card-5:hover { box-shadow: 0 8px 30px rgba(245, 158, 11, 0.15); }

.module-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.module-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
}

.module-card-1 .module-icon { background: rgba(0, 212, 255, 0.1); color: var(--accent-cyan); }
.module-card-2 .module-icon { background: rgba(0, 102, 255, 0.1); color: var(--accent-blue); }
.module-card-3 .module-icon { background: rgba(124, 58, 237, 0.1); color: var(--accent-purple); }
.module-card-4 .module-icon { background: rgba(20, 184, 166, 0.1); color: var(--accent-teal); }
.module-card-5 .module-icon { background: rgba(245, 158, 11, 0.1); color: var(--accent-orange); }

.module-tag {
    font-size: 0.68rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

.module-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}

.module-card p {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Tech Advantages */
.tech-advantages {
    margin-bottom: 64px;
}

.tech-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.tech-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 24px;
    transition: var(--transition);
}

.tech-item:hover {
    border-color: rgba(0, 212, 255, 0.3);
}

.tech-marker {
    flex-shrink: 0;
    width: 8px;
    height: 8px;
    margin-top: 6px;
    border-radius: 50%;
    background: var(--gradient-primary);
    box-shadow: 0 0 10px var(--accent-cyan);
}

.tech-item h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.tech-item p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Case Study */
.case-study {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, rgba(0, 102, 255, 0.05) 100%);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 20px;
    padding: 40px;
}

.case-badge {
    display: inline-block;
    padding: 4px 14px;
    background: var(--gradient-primary);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 12px;
}

.case-title {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 28px;
}

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

.case-meta {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.case-meta-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 4px;
}

.case-meta-text {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.case-results {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.case-result {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
}

.case-result-icon {
    color: var(--accent-cyan);
    margin-bottom: 10px;
}

.case-result h5 {
    font-size: 0.88rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.case-result p {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ============================================
   Deployment Section
   ============================================ */
.section-deployment {
    background: var(--bg-darker);
}

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

.deploy-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 36px;
    transition: var(--transition);
    position: relative;
}

.deploy-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--shadow-glow);
}

.deploy-card-featured {
    border-color: rgba(0, 212, 255, 0.3);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0, 212, 255, 0.05) 100%);
}

.deploy-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    padding: 4px 14px;
    background: var(--gradient-primary);
    border-radius: 100px;
    font-size: 0.72rem;
    font-weight: 700;
    color: #FFFFFF;
}

.deploy-card-top {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.deploy-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.08);
    border-radius: 14px;
    color: var(--accent-cyan);
    flex-shrink: 0;
}

.deploy-card-top h4 {
    font-size: 1.15rem;
    font-weight: 700;
}

.deploy-features {
    margin-bottom: 24px;
}

.deploy-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.deploy-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-cyan);
    flex-shrink: 0;
}

.deploy-scenario {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.deploy-scenario-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.deploy-scenario p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   Business Model Section
   ============================================ */
.section-business {
    background: var(--bg-dark);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 80px;
}

.business-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
}

.business-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.3);
}

.business-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.08);
    border-radius: 14px;
    color: var(--accent-cyan);
}

.business-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.business-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Service Timeline */
.service-section {
    margin-bottom: 80px;
}

.service-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.service-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    transition: var(--transition);
    position: relative;
}

.service-item:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
}

.service-num {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    line-height: 1;
}

.service-body h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.service-body p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Roadmap */
.roadmap-section {
    margin-bottom: 40px;
}

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

.roadmap-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.roadmap-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0.6;
}

.roadmap-item:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.3);
}

.roadmap-period {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 4px;
}

.roadmap-years {
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.roadmap-item p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   Contact Section
   ============================================ */
.section-contact {
    background: var(--bg-darker);
    position: relative;
    overflow: hidden;
}

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

.contact-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.2;
}

.contact-orb.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--accent-blue);
    top: -100px;
    left: -100px;
}

.contact-orb.orb-2 {
    width: 350px;
    height: 350px;
    background: var(--accent-cyan);
    bottom: -50px;
    right: -50px;
}

.contact-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.contact-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.contact-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 36px;
}

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

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

.contact-info-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 10px;
    color: var(--accent-cyan);
    flex-shrink: 0;
}

.contact-info-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-bottom: 2px;
}

.contact-info-value {
    font-size: 0.92rem;
    font-weight: 500;
}

/* Contact Form */
.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 36px;
}

.form-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.form-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    transition: var(--transition);
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.03);
}

.form-success {
    display: none;
    text-align: center;
    padding: 20px 0;
}

.form-success.show {
    display: block;
    animation: fadeIn 0.5s ease;
}

.form-success p {
    color: var(--accent-cyan);
    font-weight: 600;
    margin-top: 12px;
}

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

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-logo span {
    font-size: 1.1rem;
    font-weight: 800;
}

.footer-tagline {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

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

.footer-col h5 {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text-primary);
}

.footer-col a {
    display: block;
    font-size: 0.82rem;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 8px;
    transition: var(--transition);
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom p {
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

/* ============================================
   Scroll Reveal Animation
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .modules-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .business-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-content {
        grid-template-columns: 1fr;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--bg-darker);
        flex-direction: column;
        justify-content: center;
        gap: 24px;
        padding: 40px;
        transition: right 0.4s ease;
        border-left: 1px solid var(--border-color);
    }
    
    .nav-lang-item {
        margin: 0 auto;
    }
    
    .lang-dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(255, 255, 255, 0.03);
        margin-top: 8px;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .cert-grid {
        grid-template-columns: 1fr;
    }
    
    .pain-grid {
        grid-template-columns: 1fr;
    }
    
    .lifecycle-flow {
        flex-direction: column;
        gap: 12px;
    }
    
    .lifecycle-connector {
        display: none;
    }
    
    .vision-card {
        grid-template-columns: 1fr;
    }
    
    .modules-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .deployment-grid {
        grid-template-columns: 1fr;
    }
    
    .business-grid {
        grid-template-columns: 1fr;
    }
    
    .service-timeline {
        grid-template-columns: 1fr 1fr;
    }
    
    .roadmap-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .case-results {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero-stat-divider {
        width: 60px;
        height: 1px;
    }
    
    .founder-card {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .modules-grid {
        grid-template-columns: 1fr;
    }
    
    .service-timeline {
        grid-template-columns: 1fr;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}