/* ========================================
   Silicon Hiland Service - Main Stylesheet
   ======================================== */

/* CSS Variables */
:root {
    /* Primary Colors */
    --primary: #0066FF;
    --primary-dark: #0052CC;
    --primary-light: #4D94FF;
    
    /* Secondary Colors */
    --secondary: #00D4AA;
    --secondary-dark: #00B38F;
    --secondary-light: #33DDBB;
    
    /* Accent Colors */
    --accent: #FF6B35;
    --accent-dark: #E55A2B;
    --accent-light: #FF8A5C;
    
    /* Neutral Colors */
    --dark: #0A1628;
    --dark-lighter: #1A2D4A;
    --gray-900: #1F2937;
    --gray-800: #374151;
    --gray-700: #4B5563;
    --gray-600: #6B7280;
    --gray-500: #9CA3AF;
    --gray-400: #D1D5DB;
    --gray-300: #E5E7EB;
    --gray-200: #F3F4F6;
    --gray-100: #F9FAFB;
    --white: #FFFFFF;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0066FF 0%, #00D4AA 100%);
    --gradient-dark: linear-gradient(180deg, #0A1628 0%, #1A2D4A 100%);
    --gradient-hero: linear-gradient(135deg, rgba(10, 22, 40, 0.95) 0%, rgba(26, 45, 74, 0.9) 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
    
    /* Spacing */
    --section-padding: 100px;
    --container-max: 1280px;
    
    /* Transitions */
    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(0, 102, 255, 0.3);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50%;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--white);
    overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-family: var(--font-primary);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn i {
    font-size: 14px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: transparent;
}

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

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

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

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-xl {
    padding: 18px 36px;
    font-size: 17px;
}

.btn-nav {
    padding: 10px 20px;
    font-size: 14px;
}

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

.navbar.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 0;
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    font-size: 18px;
}

.logo-img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.logo-text {
    letter-spacing: 0.5px;
}

.logo-accent {
    color: var(--secondary);
    margin-left: 4px;
}

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

.nav-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 15px;
    font-weight: 500;
    position: relative;
}

.nav-links a:not(.btn):hover {
    color: var(--white);
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: var(--transition);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

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

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

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

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

.hero-particles {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(0, 212, 170, 0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(0, 102, 255, 0.3), transparent),
        radial-gradient(2px 2px at 50px 160px, rgba(255, 107, 53, 0.2), transparent),
        radial-gradient(2px 2px at 90px 40px, rgba(0, 212, 170, 0.3), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(0, 102, 255, 0.2), transparent);
    background-size: 200px 200px;
    animation: particles 20s linear infinite;
    opacity: 0.6;
}

@keyframes particles {
    0% { transform: translateY(0); }
    100% { transform: translateY(-200px); }
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(0, 102, 255, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 212, 170, 0.1) 0%, transparent 50%),
        linear-gradient(180deg, rgba(10, 22, 40, 0.8) 0%, var(--dark) 100%);
}

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

.hero-content {
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(0, 102, 255, 0.1);
    border: 1px solid rgba(0, 102, 255, 0.3);
    border-radius: 50px;
    color: var(--primary-light);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 32px;
}

.hero-badge i {
    font-size: 16px;
}

.hero-title {
    font-size: clamp(48px, 8vw, 80px);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 24px;
    line-height: 1.1;
}

.title-line {
    display: block;
}

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

.hero-subtitle {
    font-size: clamp(18px, 2.5vw, 24px);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 16px;
    font-weight: 500;
}

.hero-subline {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 48px;
    line-height: 1.8;
}

.hero-subline strong {
    color: var(--secondary);
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.hero-scroll a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    animation: bounce 2s infinite;
}

.hero-scroll a:hover {
    color: var(--white);
}

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

/* ========================================
   Section Styles
   ======================================== */
.section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: 50px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    color: var(--dark);
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray-600);
}

/* ========================================
   Who We Are Section
   ======================================== */
.who-we-are {
    background: var(--gray-100);
}

.who-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.who-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.who-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: var(--white);
    font-size: 24px;
    margin-bottom: 24px;
}

.who-card h3 {
    font-size: 24px;
    color: var(--dark);
    margin-bottom: 16px;
}

.who-card > p {
    color: var(--gray-700);
    margin-bottom: 16px;
}

.role-list {
    margin-bottom: 16px;
}

.role-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    color: var(--gray-700);
    font-size: 15px;
}

.role-list li i {
    color: var(--secondary);
    font-size: 14px;
}

.highlight-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 24px;
}

.not-selling {
    background: rgba(255, 107, 53, 0.1);
    padding: 20px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
}

.not-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    color: var(--gray-700);
    font-size: 15px;
}

.not-item i {
    color: var(--accent);
}

.what-we-do {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    color: var(--white);
}

.what-we-do i {
    font-size: 24px;
    margin-top: 2px;
}

.what-we-do p {
    font-size: 16px;
    line-height: 1.7;
}

.who-ecosystem {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.who-ecosystem h3 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 24px;
}

.who-ecosystem h3 i {
    color: var(--primary);
}

.ecosystem-table {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--gray-300);
}

.ecosystem-row {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    border-bottom: 1px solid var(--gray-300);
}

.ecosystem-row:last-child {
    border-bottom: none;
}

.ecosystem-header {
    background: var(--dark);
    color: var(--white);
    font-weight: 600;
}

.eco-col {
    padding: 16px 20px;
    font-size: 15px;
}

.eco-name {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    color: var(--dark);
    background: var(--gray-100);
}

.eco-name i {
    color: var(--primary);
    font-size: 16px;
}

.ecosystem-row:not(.ecosystem-header) .eco-col:last-child {
    color: var(--gray-700);
}

/* ========================================
   Services Section
   ======================================== */
.services {
    background: var(--white);
}

.service-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 40px;
    background: var(--white);
    padding: 48px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    margin-bottom: 40px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

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

.service-card:last-child {
    margin-bottom: 0;
}

.service-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: 32px;
    color: var(--white);
}

.service-deepbrain .service-icon {
    background: linear-gradient(135deg, #0066FF 0%, #0052CC 100%);
}

.service-brainfarm .service-icon {
    background: linear-gradient(135deg, #00D4AA 0%, #00B38F 100%);
}

.service-brainmaster .service-icon {
    background: linear-gradient(135deg, #FF6B35 0%, #E55A2B 100%);
}

.service-badge {
    display: inline-block;
    padding: 6px 12px;
    background: var(--gray-200);
    border-radius: var(--radius-sm);
    color: var(--gray-600);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.service-title {
    font-size: 28px;
    color: var(--dark);
    margin-bottom: 8px;
}

.service-subtitle {
    font-size: 16px;
    color: var(--gray-600);
    font-style: italic;
    margin-bottom: 24px;
}

.service-target, .service-what, .service-model, .service-structure {
    margin-bottom: 24px;
}

.service-target h4, .service-what h4, .service-model h4, .service-structure h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    color: var(--dark);
    margin-bottom: 12px;
}

.service-target h4 i, .service-what h4 i, .service-model h4 i, .service-structure h4 i {
    color: var(--primary);
}

.service-target p, .service-what p {
    color: var(--gray-700);
    font-size: 15px;
}

.service-what ul {
    display: grid;
    gap: 10px;
}

.service-what ul li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--gray-700);
    font-size: 15px;
}

.service-what ul li i {
    color: var(--secondary);
    margin-top: 4px;
}

/* Structure Grid */
.structure-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.structure-item {
    background: var(--gray-100);
    padding: 16px;
    border-radius: var(--radius-md);
    text-align: center;
}

.structure-item .amount {
    display: block;
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.structure-item .label {
    font-size: 13px;
    color: var(--gray-600);
}

/* Service Fee */
.service-fee {
    margin-bottom: 24px;
}

.fee-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--primary);
    font-size: 16px;
}

.fee-badge strong {
    font-size: 24px;
    font-weight: 700;
}

/* Model Split */
.model-split {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 20px;
    background: var(--gray-100);
    border-radius: var(--radius-md);
}

.model-split.vertical {
    flex-direction: column;
}

.model-item {
    flex: 1;
    padding: 20px;
    border-radius: var(--radius-md);
    text-align: center;
}

.model-item.partner {
    background: var(--white);
    border: 2px solid var(--secondary);
}

.model-item.silicon {
    background: var(--white);
    border: 2px solid var(--primary);
}

.model-item.brainmaster {
    background: var(--white);
    border: 2px solid var(--accent);
}

.model-label {
    display: block;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.model-desc {
    font-size: 14px;
    color: var(--gray-600);
}

.model-divider {
    color: var(--gray-400);
    font-size: 20px;
}

/* Profit Share */
.profit-share {
    margin-bottom: 24px;
}

.share-visual {
    max-width: 400px;
}

.share-bar {
    display: flex;
    height: 48px;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 8px;
}

.share-partner {
    flex: 7;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--secondary);
    color: var(--white);
    font-weight: 700;
    font-size: 18px;
}

.share-silicon {
    flex: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--white);
    font-weight: 700;
    font-size: 18px;
}

.share-visual.equal .share-partner,
.share-visual.equal .share-silicon {
    flex: 1;
}

.share-labels {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--gray-600);
    padding: 0 8px;
}

.share-note {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    font-size: 14px;
    color: var(--gray-600);
}

.share-note i {
    color: var(--primary);
}

/* Key Difference */
.key-difference {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: rgba(255, 107, 53, 0.1);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
}

.key-difference i {
    color: var(--accent);
    font-size: 20px;
    margin-top: 2px;
}

.key-difference strong {
    display: block;
    color: var(--dark);
    margin-bottom: 4px;
}

.key-difference p {
    font-size: 15px;
    color: var(--gray-700);
}

.key-difference em {
    color: var(--primary);
    font-style: normal;
    font-weight: 600;
}

/* Exchanges List */
.exchanges-list {
    margin-bottom: 24px;
}

.exchanges-list h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    color: var(--dark);
    margin-bottom: 16px;
}

.exchanges-list h4 i {
    color: var(--primary);
}

.exchange-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--gray-700);
    transition: var(--transition);
}

.tag:hover {
    background: var(--primary);
    color: var(--white);
}

.tag i {
    font-size: 12px;
}

.tag.more {
    background: var(--primary);
    color: var(--white);
}

/* Service Button */
.btn-service {
    margin-top: 8px;
}

/* ========================================
   Why Us Section
   ======================================== */
.why-us {
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.why-us::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 30% 0%, rgba(0, 102, 255, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 100%, rgba(0, 212, 170, 0.1) 0%, transparent 50%);
}

.why-us .section-badge {
    background: rgba(0, 212, 170, 0.2);
    color: var(--secondary);
}

.why-us .section-title {
    color: var(--white);
}

.why-us .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}

.pillar-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 32px;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: var(--transition);
}

.pillar-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-8px);
    border-color: rgba(0, 212, 170, 0.3);
}

.pillar-number {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.5;
    margin-bottom: 16px;
}

.pillar-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: var(--white);
    font-size: 24px;
}

.pillar-card h3 {
    font-size: 20px;
    color: var(--white);
    margin-bottom: 12px;
}

.pillar-card p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    margin-bottom: 8px;
}

.pillar-location {
    color: var(--secondary) !important;
    font-weight: 600;
}

.pillar-formula {
    font-family: var(--font-display);
    color: var(--secondary) !important;
    font-weight: 700;
}

.pillar-highlight {
    color: var(--secondary) !important;
    font-weight: 500;
}

/* ========================================
   Business Model Section
   ======================================== */
.business-model {
    background: var(--gray-100);
}

.model-table {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.table-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    background: var(--dark);
    color: var(--white);
}

.table-header .table-col {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 15px;
}

.table-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition);
}

.table-row:last-child {
    border-bottom: none;
}

.table-row:hover {
    background: var(--gray-100);
}

.table-row .table-col {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--gray-700);
}

.table-row .table-col:first-child {
    font-weight: 600;
    color: var(--dark);
}

.table-row .table-col i {
    color: var(--primary);
    font-size: 18px;
}

.table-col.revenue {
    color: var(--primary);
}

.table-col.revenue strong {
    font-size: 20px;
}

/* ========================================
   About Section
   ======================================== */
.about {
    background: var(--white);
    padding: 80px 0;
}

.about-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.about-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    color: var(--white);
    font-size: 32px;
}

.about-content h2 {
    font-size: 32px;
    color: var(--dark);
    margin-bottom: 8px;
}

.about-operated {
    color: var(--gray-600);
    font-size: 16px;
    margin-bottom: 8px;
}

.about-entity {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 8px;
}

.about-position {
    font-size: 16px;
    color: var(--secondary);
    font-weight: 600;
    margin-bottom: 16px;
}

.about-desc {
    color: var(--gray-600);
    font-size: 16px;
}

/* ========================================
   Final CTA Section
   ======================================== */
.final-cta {
    background: var(--gradient-dark);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 50% 0%, rgba(0, 102, 255, 0.2) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 100%, rgba(0, 212, 170, 0.1) 0%, transparent 60%);
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(28px, 4vw, 40px);
    color: var(--white);
    margin-bottom: 12px;
}

.cta-subtitle {
    font-size: clamp(20px, 3vw, 28px);
    color: var(--secondary);
    font-weight: 600;
    margin-bottom: 48px;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.cta-buttons .btn-outline {
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.5);
}

.cta-buttons .btn-outline:hover {
    background: var(--white);
    color: var(--dark);
    border-color: var(--white);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-brand p {
    font-size: 14px;
    line-height: 1.6;
}

.footer h4 {
    color: var(--white);
    font-size: 16px;
    margin-bottom: 20px;
}

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

.footer ul a {
    font-size: 14px;
    transition: var(--transition);
}

.footer ul a:hover {
    color: var(--secondary);
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    margin-bottom: 12px;
}

.footer-contact i {
    color: var(--secondary);
}

.footer-bottom {
    padding-top: 24px;
    text-align: center;
    font-size: 14px;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1200px) {
    .pillars-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    :root {
        --section-padding: 80px;
    }
    
    .who-content {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .service-icon {
        margin: 0 auto;
    }
    
    .service-target h4, .service-what h4, .service-model h4, .service-structure h4, .exchanges-list h4 {
        justify-content: center;
    }
    
    .service-what ul li {
        justify-content: center;
    }
    
    .structure-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .model-split {
        flex-direction: column;
    }
    
    .share-visual {
        margin: 0 auto;
    }
    
    .key-difference {
        flex-direction: column;
        text-align: center;
    }
    
    .exchange-tags {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--dark);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 24px;
        transition: var(--transition-slow);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links a {
        font-size: 20px;
    }
    
    .hero-ctas {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-ctas .btn {
        width: 100%;
        max-width: 320px;
    }
    
    .pillars-grid {
        grid-template-columns: 1fr;
    }
    
    .structure-grid {
        grid-template-columns: 1fr;
    }
    
    .table-header, .table-row {
        grid-template-columns: 1fr;
    }
    
    .table-header .table-col:not(:first-child) {
        display: none;
    }
    
    .table-row {
        padding: 16px;
        gap: 8px;
    }
    
    .table-row .table-col {
        padding: 8px 0;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 100%;
        max-width: 320px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-contact p {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .service-card {
        padding: 24px;
    }
    
    .who-card, .who-ecosystem {
        padding: 24px;
    }
    
    .pillar-card {
        padding: 24px;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }