:root {
    --bg-base: #0b1221;
    --bg-panel: #0f172a;
    --text-main: #e2e8f0;
    --text-sub: #cbd5e1;
    --accent-1: #ff7a18;
    --accent-2: #af002d;
    --accent-3: #22d3ee;
    --card: rgba(255, 255, 255, 0.04);
    --card-stroke: rgba(255, 255, 255, 0.08);
    --shadow-soft: 0 20px 60px rgba(0, 0, 0, 0.35);
    --max-width: 1160px;
    --font-main: "Manrope", "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

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

body {
    font-family: var(--font-main);
    background: radial-gradient(circle at 20% 20%, rgba(255, 122, 24, 0.15), transparent 32%),
                radial-gradient(circle at 80% 0%, rgba(34, 211, 238, 0.14), transparent 35%),
                linear-gradient(140deg, #0b1221 0%, #0c162c 50%, #0b1221 100%);
    color: var(--text-main);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.24s ease;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(11, 18, 33, 0.9);
    backdrop-filter: blur(14px);
    z-index: 1000;
    border-bottom: 1px solid var(--card-stroke);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 28px;
    height: 78px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 38px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 28px;
}

.nav-links a {
    font-size: 15px;
    color: var(--text-sub);
    font-weight: 700;
    letter-spacing: 0.01em;
}

.nav-links a:hover {
    color: #fff;
}

/* Hero */
.hero {
    padding: 180px 20px 120px;
    text-align: center;
    position: relative;
}

.hero::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -50px;
    transform: translateX(-50%);
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(255, 122, 24, 0.32), rgba(175, 0, 45, 0.28));
    filter: blur(120px);
    opacity: 0.7;
    pointer-events: none;
}

.hero h1 {
    font-size: 62px;
    line-height: 1.08;
    font-weight: 800;
    margin-bottom: 22px;
    background: linear-gradient(120deg, #fff 0%, #ffb347 45%, #22d3ee 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.hero p {
    font-size: 20px;
    color: var(--text-sub);
    max-width: 820px;
    margin: 0 auto 46px;
    font-weight: 500;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 30px;
    border-radius: 999px;
    font-size: 16px;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.22s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-soft);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.btn-primary:hover {
    transform: translateY(-1px) scale(1.01);
    box-shadow: 0 18px 38px rgba(255, 122, 24, 0.35);
}

.btn-secondary {
    background: #0f172a;
    color: #e2e8f0;
    border: 1px solid var(--card-stroke);
}

.btn-secondary:hover {
    transform: translateY(-1px) scale(1.01);
    box-shadow: 0 14px 32px rgba(34, 211, 238, 0.25);
}

/* Sections */
.section {
    padding: 90px 20px;
    max-width: 1040px;
    margin: 0 auto;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 46px;
    text-align: center;
    letter-spacing: -0.01em;
}

.content-block {
    margin-bottom: 64px;
    background: var(--card);
    border: 1px solid var(--card-stroke);
    border-radius: 18px;
    padding: 28px;
    box-shadow: var(--shadow-soft);
}

.content-block h2 {
    font-size: 28px;
    margin-bottom: 16px;
    color: #f8fafc;
}

.content-block h3 {
    font-size: 20px;
    margin-bottom: 12px;
    margin-top: 24px;
    color: #e2e8f0;
}

.content-block p {
    font-size: 17px;
    margin-bottom: 18px;
    color: var(--text-sub);
    line-height: 1.82;
}

.content-block ul {
    margin-bottom: 18px;
    padding-left: 20px;
}

.content-block li {
    font-size: 17px;
    margin-bottom: 10px;
    color: var(--text-sub);
}

/* Feature Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-top: 26px;
}

.feature-card {
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid var(--card-stroke);
    padding: 22px;
    border-radius: 14px;
    transition: all 0.2s ease;
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.28);
}

.feature-card:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 122, 24, 0.4);
}

.feature-card h3 {
    margin-top: 0;
    font-size: 18px;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #ffb347, #22d3ee);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-card p {
    font-size: 15px;
    margin-bottom: 0;
    color: #cbd5e1;
}

/* Footer */
footer {
    background: #0a0f1c;
    padding: 70px 24px;
    border-top: 1px solid var(--card-stroke);
    margin-top: 60px;
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    text-align: center;
    color: #cbd5e1;
    font-size: 14px;
    line-height: 1.7;
}

.footer-content p {
    margin-bottom: 10px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding-top: 150px;
    }

    .hero h1 {
        font-size: 42px;
    }

    .hero p {
        font-size: 17px;
    }

    .nav-links {
        display: none;
    }

    .section {
        padding: 70px 18px;
    }

    .content-block {
        padding: 22px;
    }
}