/* Reset & Variables */
:root {
    --bg-dark: #0b0c10;
    --bg-card: rgba(25, 26, 36, 0.7);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --grad-primary: linear-gradient(135deg, #3b82f6, #8b5cf6);
    --grad-secondary: linear-gradient(135deg, #8b5cf6, #d946ef);
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --border-color: rgba(139, 92, 246, 0.2);
    --font-base: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

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

/* Background Gradients */
body::before, body::after {
    content: '';
    position: fixed;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    opacity: 0.15;
}

body::before {
    top: -20vw;
    left: -20vw;
    background: var(--accent-blue);
}

body::after {
    bottom: -20vw;
    right: -20vw;
    background: var(--accent-purple);
}

a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; border-radius: 12px; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; }
h2 { font-size: 2.5rem; text-align: center; margin-bottom: 3rem; }

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.btn-grad {
    background: var(--grad-primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-grad:hover {
    background: var(--grad-secondary);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
    transform: translateY(-2px);
}

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

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

/* Header */
.site-header {
    position: fixed;
    top: 0; width: 100%;
    background: rgba(11, 12, 16, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 24px; height: 24px;
    background: var(--grad-primary);
    border-radius: 6px;
    transform: rotate(45deg);
}

.nav-menu { display: flex; gap: 32px; }
.nav-menu a { color: var(--text-secondary); font-weight: 500; }
.nav-menu a:hover { color: var(--text-primary); }

.nav-right { display: flex; align-items: center; gap: 20px; }
.lang-btn { color: var(--text-secondary); font-size: 0.9rem; cursor: pointer; }

/* Hero */
.hero-sec {
    padding: 180px 0 100px;
    text-align: center;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 40px;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* Trust */
.trust-sec {
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.02);
}

.trust-wrap {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-weight: 500;
}

.trust-item::before {
    content: '✦';
    color: var(--accent-blue);
}

/* Stats */
.stats-sec { padding: 80px 0; }
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px 20px;
    text-align: center;
    backdrop-filter: blur(5px);
}

.stat-num {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 8px;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-txt { color: var(--text-secondary); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; }

/* Features */
.feat-sec { padding: 80px 0; }
.feat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px 30px;
    transition: transform 0.3s, border-color 0.3s;
}

.feat-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-purple);
}

.feat-card h3 { font-size: 1.5rem; margin-bottom: 16px; color: var(--text-primary); }
.feat-card p { color: var(--text-secondary); margin-bottom: 24px; }
.feat-img { width: 100%; border: 1px solid rgba(255,255,255,0.1); }

/* Nodes */
.node-sec { padding: 80px 0; }
.node-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 50px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.node-item {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    flex: 1;
    min-width: 120px;
}

.n-city { font-size: 1.2rem; font-weight: 700; margin-bottom: 5px; }
.n-speed { color: var(--accent-blue); font-size: 0.85rem; }

/* Testimonials */
.testi-sec { padding: 80px 0; }
.testi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testi-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
}

.t-stars { color: #f59e0b; margin-bottom: 15px; letter-spacing: 2px; }
.t-txt { color: var(--text-secondary); font-style: italic; margin-bottom: 24px; }
.t-user { display: flex; align-items: center; gap: 15px; }
.t-ava {
    width: 40px; height: 40px;
    background: var(--grad-primary);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: bold; color: #fff;
}

/* Pricing */
.price-sec { padding: 80px 0; }
.price-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    align-items: center;
}

.price-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px 30px;
    text-align: center;
}

.price-card.pro {
    border: 2px solid var(--accent-purple);
    transform: scale(1.05);
    background: rgba(139, 92, 246, 0.05);
    position: relative;
}

.p-tag {
    position: absolute;
    top: -12px; left: 50%; transform: translateX(-50%);
    background: var(--grad-primary);
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
}

.p-title { font-size: 1.4rem; margin-bottom: 15px; color: var(--text-secondary); }
.p-price { font-size: 3rem; font-weight: 800; margin-bottom: 25px; }
.p-price span { font-size: 1rem; color: var(--text-secondary); font-weight: normal; }
.p-list { text-align: left; margin-bottom: 30px; }
.p-list li {
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    color: var(--text-secondary);
}
.p-list li::before { content: '✓'; color: var(--accent-blue); margin-right: 10px; }

/* FAQ */
.faq-sec { padding: 80px 0; }
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 16px;
    padding: 20px 24px;
}
.faq-q { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; color: var(--text-primary); }
.faq-a { color: var(--text-secondary); }

/* Footer */
.site-footer {
    padding: 60px 0 20px;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.5);
}
.f-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.f-brand .logo { margin-bottom: 15px; }
.f-brand p { color: var(--text-secondary); font-size: 0.9rem; }
.f-links h4 { margin-bottom: 20px; font-size: 1rem; }
.f-links li { margin-bottom: 10px; }
.f-links a { color: var(--text-secondary); font-size: 0.9rem; }
.f-links a:hover { color: var(--accent-blue); }
.f-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Download Page */
.dl-hero { padding: 160px 0 60px; text-align: center; }
.dl-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 800px;
    margin: 0 auto 100px;
}
.dl-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    transition: transform 0.3s;
}
.dl-card:hover { transform: translateY(-5px); border-color: var(--accent-blue); }
.dl-icon { font-size: 3rem; margin-bottom: 20px; }
.dl-card h3 { margin-bottom: 10px; }
.dl-card p { color: var(--text-secondary); margin-bottom: 25px; }

/* Help Page */
.help-hero { padding: 160px 0 60px; text-align: center; }
.help-grid {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 40px;
    margin-bottom: 100px;
}
.help-side {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    height: fit-content;
}
.help-side li { margin-bottom: 8px; }
.help-side a {
    display: block;
    padding: 10px 15px;
    border-radius: 8px;
    color: var(--text-secondary);
    font-weight: 500;
}
.help-side a:hover, .help-side a.active {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent-blue);
}
.help-main section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    margin-bottom: 30px;
}
.help-main h3 { color: var(--text-primary); margin-bottom: 20px; font-size: 1.5rem; }
.help-main p { color: var(--text-secondary); margin-bottom: 15px; }
.help-main ul, .help-main ol { margin-left: 20px; color: var(--text-secondary); }
.help-main li { margin-bottom: 8px; }

/* Responsive */
@media (max-width: 992px) {
    .stats-grid, .feat-grid, .testi-grid, .price-grid { grid-template-columns: repeat(2, 1fr); }
    .f-grid { grid-template-columns: 1fr 1fr; }
    .price-card.pro { transform: none; }
}
@media (max-width: 768px) {
    .nav-menu { display: none; }
    .hero-title { font-size: 3rem; }
    .stats-grid, .feat-grid, .testi-grid, .price-grid, .dl-grid, .help-grid { grid-template-columns: 1fr; }
}