:root {
    --font-main: 'Inter', sans-serif;
    --text-primary: #1A1C1F;
    --text-secondary: #4A4F57;
    --text-muted: #7A828C;
    --gradient-primary: linear-gradient(135deg, #4DA3FF 0%, #A78BFA 100%);
    --gradient-secondary: linear-gradient(135deg, #6EC9FF 0%, #C8B5FF 100%);
    --glass-bg: rgba(255, 255, 255, 0.45);
    --glass-border: rgba(255, 255, 255, 0.35);
    --glass-blur: blur(18px);
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 32px;
    --space-lg: 48px;
    --space-xl: 72px;
    --space-xxl: 120px;
    --radius: 18px;
    --shadow-soft: 0 8px 32px rgba(0,0,0,0.08);
}

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

body {
    font-family: var(--font-main);
    background: #F8FBFF;
    color: var(--text-primary);
    line-height: 1.55;
}

section {
    padding: var(--space-xl) 5%;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-lg);
}

.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    padding: 14px 26px;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: 0.25s ease;
    margin: 5px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(77,163,255,0.35);
}

.btn-secondary {
    background: white;
    color: var(--text-primary);
    padding: 14px 26px;
    border-radius: var(--radius);
    border: 2px solid rgba(0,0,0,0.1);
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: 0.25s ease;
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-soft);
}

.hero {
    position: relative;
    padding: var(--space-xxl) 5%;
    text-align: center;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, #F8FBFF 0%, #EEF4FF 100%);
    z-index: -1;
}

.hero-content {
    padding: var(--space-lg);
    max-width: 700px;
    margin: auto;
}

.hero h1 {
    font-size: 64px;
    font-weight: 800;
    margin-bottom: var(--space-sm);
}

.hero-sub {
    font-size: 18px;
    color: var(--text-secondary);
    margin-top: var(--space-sm);
}

.hero-buttons {
    margin-top: var(--space-lg);
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
}

.vp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-md);
}

.vp-card {
    padding: var(--space-md);
    text-align: center;
}

.vp-card h3 {
    margin-bottom: var(--space-sm);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-md);
}

.service-card {
    padding: var(--space-md);
    text-align: center;
}

.slideshow {
    position: relative;
    padding: var(--space-lg);
    max-width: 700px;
    margin: auto;
}

.slides {
    position: relative;
    overflow: hidden;
}

.slide {
    display: none;
    text-align: center;
    padding: var(--space-md);
}

.slide.active {
    display: block;
}

.app-icon {
    width: 120px;
    margin-bottom: var(--space-sm);
}

.slideshow-controls {
    margin-top: var(--space-md);
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
}

.slideshow-controls button {
    background: white;
    border: 1px solid rgba(0,0,0,0.1);
    padding: 10px 18px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 20px;
    transition: 0.2s ease;
}

.slideshow-controls button:hover {
    background: #f0f4ff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-md);
}

.feature-card {
    padding: var(--space-md);
    text-align: center;
    font-weight: 600;
}

.history-card {
    max-width: 600px;
    margin: auto;
    padding: var(--space-lg);
}

.history-card ul {
    list-style: none;
}

.history-card li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-md);
}

.trust-card {
    padding: var(--space-md);
    text-align: center;
    font-weight: 600;
}

.community-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-md);
}

.community-card {
    padding: var(--space-md);
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    transition: 0.25s ease;
}

.community-card:hover {
    transform: translateY(-4px);
}

.cta {
    text-align: center;
    padding: var(--space-xl);
    margin: var(--space-xl) 5%;
}

.cta-buttons {
    margin-top: var(--space-md);
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
}

.modal-title {
    margin-bottom: var(--space-sm);
}

.form-hint {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
    flex-wrap: wrap;
}

.form-actions .btn,
.form-actions .btn-primary,
.form-actions .btn-secondary {
    min-width: 140px;
    text-align: center;
}