/* ==================== 全局重置 & 变量 ==================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Noto+Sans+SC:wght@400;500;700;900&display=swap');

:root {
    /* 主色：白色系 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-hover: #f0f4ff;
    
    /* 文字 */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    /* 科技蓝点缀 */
    --accent: #3b82f6;
    --accent-light: #60a5fa;
    --accent-deep: #1d4ed8;
    --accent-glow: rgba(59, 130, 246, 0.15);
    --accent-glow-strong: rgba(59, 130, 246, 0.25);
    
    /* 渐变 */
    --gradient-1: linear-gradient(135deg, #3b82f6 0%, #6366f1 50%, #06b6d4 100%);
    --gradient-2: linear-gradient(135deg, #2563eb 0%, #4f46e5 100%);
    --gradient-3: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-light: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
    
    /* 边框与阴影 */
    --border: rgba(0, 0, 0, 0.06);
    --border-light: rgba(0, 0, 0, 0.08);
    --border-accent: rgba(59, 130, 246, 0.15);
    
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
    --shadow-accent: 0 4px 20px rgba(59, 130, 246, 0.2);
    --shadow-accent-lg: 0 8px 40px rgba(59, 130, 246, 0.25);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
}

/* ==================== 粒子背景 ==================== */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

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

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.3rem;
    z-index: 1001;
    color: var(--text-primary);
}

.logo-icon {
    width: 38px;
    height: 38px;
    background: var(--gradient-2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow-strong); }
    50% { box-shadow: 0 0 20px 6px var(--accent-glow-strong); }
}

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

.nav-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    padding: 4px 0;
    transition: color 0.3s;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    border-radius: 2px;
    transition: width 0.3s ease;
}

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

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 4px;
}

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

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==================== Hero ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    overflow: hidden;
    background: var(--bg-primary);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 140%;
    height: 200%;
    background: 
        radial-gradient(ellipse at 30% 20%, rgba(59, 130, 246, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 60%, rgba(99, 102, 241, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(6, 182, 212, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* 网格背景 - 科技感 */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 650px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient-light);
    border: 1px solid var(--border-accent);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--accent-deep);
    font-weight: 500;
    margin-bottom: 32px;
    animation: fadeInDown 0.8s ease;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: blink 2s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.title-line { display: block; }

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

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
}

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

.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-2);
    color: white;
    box-shadow: var(--shadow-accent);
}

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

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
    transition: left 0.5s;
}

.btn-primary:hover .btn-shine { left: 100%; }

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border-light);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--gradient-light);
    border-color: var(--accent);
    color: var(--accent-deep);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 48px;
    font-size: 1.05rem;
}

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

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

.stat-item span:first-of-type {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item span:nth-of-type(2) {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-left: 2px;
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Hero Visual */
.hero-visual {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 50%;
    height: 80%;
    z-index: 1;
    pointer-events: none;
}

.hero-orb {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    border-radius: 50%;
    animation: orbFloat 6s ease-in-out infinite;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.1); }
}

.floating-shape {
    position: absolute;
    border-radius: 24px;
    background: var(--gradient-2);
    opacity: 0.08;
    filter: blur(30px);
}

.shape-1 { width: 120px; height: 120px; top: 20%; left: 20%; animation: float1 8s ease-in-out infinite; }
.shape-2 { width: 80px; height: 80px; top: 60%; left: 60%; border-radius: 50%; background: var(--gradient-3); animation: float2 6s ease-in-out infinite; }
.shape-3 { width: 100px; height: 100px; top: 40%; left: 40%; background: var(--gradient-1); animation: float3 10s ease-in-out infinite; }

@keyframes float1 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(30px, -30px) rotate(10deg); }
}
@keyframes float2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-20px, 20px) scale(1.2); }
}
@keyframes float3 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-15px, -15px) rotate(-10deg); }
}

.code-rain {
    position: absolute;
    top: 15%;
    right: 10%;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.code-rain span {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.75rem;
    color: var(--accent-light);
    opacity: 0;
    animation: codeDrop 4s ease-in-out infinite;
}
.code-rain span:nth-child(2) { animation-delay: 0.8s; }
.code-rain span:nth-child(3) { animation-delay: 1.6s; }
.code-rain span:nth-child(4) { animation-delay: 2.4s; }
.code-rain span:nth-child(5) { animation-delay: 3.2s; }
.code-rain span:nth-child(6) { animation-delay: 4s; }

@keyframes codeDrop {
    0% { opacity: 0; transform: translateY(-10px); }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { opacity: 0; transform: translateY(10px); }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.75rem;
    z-index: 2;
    animation: fadeInDown 1s ease 1s both;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 13px;
    position: relative;
}

.mouse-wheel {
    width: 4px;
    height: 8px;
    background: var(--accent);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ==================== Section Common ==================== */
section {
    position: relative;
    z-index: 1;
}

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

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--gradient-light);
    border: 1px solid var(--border-accent);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--accent-deep);
    font-weight: 500;
    margin-bottom: 20px;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.3;
    color: var(--text-primary);
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* ==================== About ==================== */
.about {
    padding: 120px 24px;
    max-width: 1280px;
    margin: 0 auto;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.about-lead {
    font-size: 1.15rem;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.7;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.85;
    margin-bottom: 16px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 32px;
}

.about-feature {
    text-align: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px 12px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.about-feature:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.af-number {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.af-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.about-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.about-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.about-card-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    background: var(--gradient-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-card-icon svg {
    width: 24px;
    height: 24px;
    color: var(--accent);
}

.about-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.about-card p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==================== Services ==================== */
.services {
    padding: 120px 24px;
    max-width: 1280px;
    margin: 0 auto;
    background: var(--bg-secondary);
}

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

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

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform 0.4s ease;
    border-radius: 3px 3px 0 0;
}

.service-card:hover::before { transform: scaleX(1); }

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    margin-bottom: 24px;
    position: relative;
}

.service-icon svg {
    width: 40px;
    height: 40px;
    color: var(--accent);
    position: relative;
    z-index: 1;
}

.icon-bg {
    position: absolute;
    top: -8px;
    left: -8px;
    width: 56px;
    height: 56px;
    background: var(--gradient-light);
    border-radius: 14px;
    transition: var(--transition);
}

.service-card:hover .icon-bg {
    background: rgba(59, 130, 246, 0.12);
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.service-card > p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
    line-height: 1.75;
}

.service-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
}

.service-features li {
    font-size: 0.78rem;
    color: var(--accent);
    background: var(--gradient-light);
    padding: 4px 12px;
    border-radius: 50px;
    transition: var(--transition);
    font-weight: 500;
}

.service-features li:hover {
    background: rgba(59, 130, 246, 0.15);
}

/* ==================== Process ==================== */
.process {
    padding: 120px 24px;
    background: var(--bg-primary);
    position: relative;
}

.process::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.015) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.process-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.process-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent) 0%, var(--accent-light) 50%, transparent 100%);
    transform: translateX(-50%);
}

.process-steps {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: 32px;
    position: relative;
}

.process-step:nth-child(odd) {
    flex-direction: row;
    padding-right: 50%;
}
.process-step:nth-child(even) {
    flex-direction: row-reverse;
    padding-left: 50%;
}

.step-number {
    min-width: 60px;
    height: 60px;
    background: var(--bg-card);
    border: 2px solid var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--accent);
    position: relative;
    z-index: 2;
    transition: var(--transition);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.process-step:hover .step-number {
    background: var(--gradient-2);
    color: white;
    box-shadow: var(--shadow-accent);
    transform: scale(1.1);
}

.step-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px;
    flex: 1;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.process-step:hover .step-content {
    border-color: var(--border-accent);
    box-shadow: var(--shadow);
}

.step-content h4 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.75;
}

/* ==================== Cases ==================== */
.cases {
    padding: 120px 24px;
    max-width: 1280px;
    margin: 0 auto;
    background: var(--bg-secondary);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
}

.case-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-lg);
}

.case-image {
    height: 240px;
    position: relative;
    overflow: hidden;
}

.case-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.case-1 { background: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%); }
.case-2 { background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%); }
.case-3 { background: linear-gradient(135deg, #ecfeff 0%, #cffafe 100%); }
.case-4 { background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%); }

/* Case Mock: 手机小程序样式 */
.case-mock {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    width: 140px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

.case-mock-header {
    background: var(--accent);
    color: white;
    font-size: 0.55rem;
    font-weight: 700;
    text-align: center;
    padding: 6px 4px;
    letter-spacing: 0.05em;
}

.case-mock-body {
    padding: 8px;
}

.mock-banner {
    height: 40px;
    background: linear-gradient(135deg, #dbeafe, #c7d2fe);
    border-radius: 4px;
    margin-bottom: 8px;
}

.mock-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
}

.mock-item {
    height: 24px;
    background: #f0f4ff;
    border-radius: 3px;
}

/* Case Mock: 网页样式 */
.web-mock {
    width: 220px;
    border-radius: 8px;
}

.web-browser-bar {
    display: flex;
    gap: 5px;
    padding: 8px 10px;
    background: #f1f5f9;
}

.web-browser-bar span {
    width: 8px;
    height: 8px;
    background: #cbd5e1;
    border-radius: 50%;
}

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

.web-layout {
    display: flex;
    height: 110px;
}

.web-sidebar {
    width: 50px;
    background: #1e3a5f;
}

.web-main {
    flex: 1;
    padding: 10px;
}

.web-hero {
    height: 30px;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    border-radius: 3px;
    margin-bottom: 8px;
}

.web-cards {
    display: flex;
    gap: 4px;
}

.web-card {
    flex: 1;
    height: 20px;
    background: #f1f5f9;
    border-radius: 2px;
}

/* Case Mock: 后台管理系统 */
.dashboard-mock {
    width: 220px;
    display: flex;
    border-radius: 8px;
    overflow: hidden;
}

.dash-sidebar {
    width: 40px;
    background: #1e293b;
    padding: 8px 6px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.dash-logo {
    width: 28px;
    height: 10px;
    background: #38bdf8;
    border-radius: 2px;
}

.dash-nav {
    height: 6px;
    background: rgba(255,255,255,0.15);
    border-radius: 1px;
}

.dash-main {
    flex: 1;
    padding: 8px;
}

.dash-header {
    height: 12px;
    background: #e0f2fe;
    border-radius: 2px;
    margin-bottom: 8px;
    width: 60%;
}

.dash-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    margin-bottom: 6px;
}

.dash-chart {
    height: 24px;
    background: #dbeafe;
    border-radius: 2px;
}

.dash-chart.small {
    height: 20px;
}

.dash-table {
    height: 30px;
    background: #f0f4ff;
    border-radius: 2px;
}

/* Case Mock: APP */
.app-mock {
    width: 120px;
}

.app-screen {
    padding: 0;
}

.app-header {
    height: 16px;
    background: #059669;
}

.app-video-area {
    height: 50px;
    background: #1e293b;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.play-btn {
    width: 20px;
    height: 20px;
    background: rgba(255,255,255,0.85);
    border-radius: 50%;
    position: relative;
}

.play-btn::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-40%, -50%);
    border-left: 6px solid #059669;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
}

.app-tabs {
    display: flex;
    gap: 2px;
    padding: 6px 8px;
}

.app-tab {
    height: 4px;
    flex: 1;
    background: #e2e8f0;
    border-radius: 2px;
}

.app-tab.active {
    background: #059669;
}

.app-list {
    padding: 0 8px 8px;
}

.app-list-item {
    height: 12px;
    background: #f1f5f9;
    border-radius: 2px;
    margin-bottom: 4px;
}

.case-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
    backdrop-filter: blur(2px);
}

.case-card:hover .case-overlay { opacity: 1; }

.case-overlay-content span {
    padding: 10px 28px;
    border: 1.5px solid rgba(255, 255, 255, 0.7);
    border-radius: 50px;
    color: white;
    font-weight: 500;
    font-size: 0.9rem;
}

.case-info {
    padding: 24px 28px;
}

.case-tag {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--accent);
    background: var(--gradient-light);
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 10px;
    font-weight: 500;
}

.case-info h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.case-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 14px;
}

.case-meta {
    display: flex;
    gap: 16px;
    font-size: 0.78rem;
    color: var(--text-muted);
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

/* ==================== Tech Stack ==================== */
.tech {
    padding: 120px 24px;
    max-width: 1000px;
    margin: 0 auto;
    background: var(--bg-primary);
}

.tech-grid {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.tech-category {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 32px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.tech-category:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow);
}

.tech-category h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 16px;
    letter-spacing: 0.03em;
}

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

.tech-tags span {
    font-size: 0.85rem;
    padding: 8px 18px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 50px;
    color: var(--text-secondary);
    transition: var(--transition);
    cursor: default;
}

.tech-tags span:hover {
    background: var(--gradient-light);
    border-color: var(--border-accent);
    color: var(--accent);
    transform: translateY(-2px);
}

/* ==================== Testimonials ==================== */
.testimonials {
    padding: 120px 24px;
    background: var(--bg-secondary);
}

.testimonials-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.testimonial-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.quote-icon {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1;
    color: var(--accent);
    opacity: 0.25;
    font-family: Georgia, serif;
    margin-bottom: 12px;
}

.testimonial-card > p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 700;
    color: white;
}

.av-1 { background: linear-gradient(135deg, #3b82f6, #6366f1); }
.av-2 { background: linear-gradient(135deg, #ec4899, #f43f5e); }
.av-3 { background: linear-gradient(135deg, #06b6d4, #3b82f6); }

.testimonial-author h5 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.testimonial-author span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ==================== Clients ==================== */
.clients {
    padding: 120px 24px;
    max-width: 1100px;
    margin: 0 auto;
    background: var(--bg-primary);
}

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

.client-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 16px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.client-item:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.client-logo {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.cl-1 { color: #2563eb; }
.cl-2 { color: #0284c7; }
.cl-3 { color: #7c3aed; }
.cl-4 { color: #059669; }
.cl-5 { color: #db2777; }
.cl-6 { color: #ea580c; }
.cl-7 { color: #0891b2; }
.cl-8 { color: #9333ea; }

.client-item span {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ==================== CTA ==================== */
.cta {
    padding: 120px 24px;
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
}

.cta-bg-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.cta-content > p {
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-size: 1.05rem;
}

.cta-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    text-align: left;
}

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

.cta-form input,
.cta-form select,
.cta-form textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-secondary);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.cta-form input:focus,
.cta-form select:focus,
.cta-form textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
    background: var(--bg-card);
}

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

.cta-form select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    cursor: pointer;
    color: var(--text-primary);
}

.cta-form select option {
    background: white;
    color: var(--text-primary);
}

.cta-form textarea {
    resize: vertical;
    min-height: 100px;
}

.cta-form .btn {
    align-self: center;
    margin-top: 8px;
}

/* ==================== Footer ==================== */
.footer {
    padding: 80px 24px 32px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer-grid {
    max-width: 1200px;
    margin: 0 auto 48px;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 16px;
    line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links a {
    display: block;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 10px;
    transition: color 0.3s;
}

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

.footer-contact p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact p svg {
    flex-shrink: 0;
    color: var(--text-muted);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ==================== AOS Animations ==================== */
[data-aos] {
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-aos="fade-up"]     { transform: translateY(40px); }
[data-aos="fade-down"]   { transform: translateY(-40px); }
[data-aos="fade-right"]  { transform: translateX(-40px); }
[data-aos="fade-left"]   { transform: translateX(40px); }
[data-aos="zoom-in"]     { transform: scale(0.9); }

[data-aos].aos-animate {
    opacity: 1;
    transform: translate(0) scale(1);
}

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
    .hero-title { font-size: 2.8rem; }
    .hero-visual { opacity: 0.2; width: 100%; }

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

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

    .process-step:nth-child(odd),
    .process-step:nth-child(even) { padding: 0; }
    .process-line { left: 30px; }
    .process-step { padding-left: 70px !important; flex-direction: row !important; }

    .clients-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 40px;
    }
    .nav-links.active { display: flex; }
    .mobile-menu-btn { display: flex; }

    .hero-title { font-size: 2.2rem; }
    .hero-desc { font-size: 0.95rem; }
    .hero-stats { gap: 24px; }
    .stat-item span:first-of-type { font-size: 1.8rem; }

    .section-title { font-size: 1.8rem; }

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

    .services-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .clients-grid { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.8rem; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .btn { width: 100%; justify-content: center; }
    .about-features { grid-template-columns: repeat(2, 1fr); }
    .clients-grid { grid-template-columns: repeat(2, 1fr); }
}