:root {
    --bg: #050816;
    --bg-alt: #0b1020;
    --card-bg: #101425;
    --accent: #4f46e5;
    --accent-soft: rgba(79, 70, 229, 0.16);
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #1f2937;
    --danger: #f97373;
    --radius-lg: 18px;
    --radius-xl: 26px;
    --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.45);
    --shadow-card: 0 18px 30px rgba(15, 23, 42, 0.85);
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
        "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background: radial-gradient(circle at top, #111827 0, #020617 52%);
    color: var(--text);
    line-height: 1.6;
}

/* Utility */

.container {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Topbar */

.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(16px);
    background: linear-gradient(
        to bottom,
        rgba(15, 23, 42, 0.9),
        rgba(15, 23, 42, 0.75),
        transparent
    );
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-mark {
    width: 32px;
    height: 32px;
    border-radius: 999px;
    background: radial-gradient(circle at 30% 0, #a5b4fc 0, #4f46e5 70%, #1d4ed8 100%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #e5e7eb;
    font-weight: 700;
    font-size: 18px;
    box-shadow: 0 14px 30px rgba(79, 70, 229, 0.75);
}

.logo-text {
    font-weight: 600;
    letter-spacing: 0.02em;
    font-size: 15px;
    color: #f9fafb;
}

.nav {
    display: flex;
    gap: 18px;
    font-size: 14px;
}

.nav a {
    color: var(--muted);
    text-decoration: none;
    padding: 4px 0;
    position: relative;
}

.nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(to right, #4f46e5, #22d3ee);
    transition: width 0.2s ease;
}

.nav a:hover {
    color: #e5e7eb;
}

.nav a:hover::after {
    width: 100%;
}

/* Hero */

.hero {
    padding: 72px 0 56px;
}

.hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
    gap: 32px;
    align-items: center;
}

.hero-text h1 {
    font-size: clamp(26px, 3vw, 36px);
    line-height: 1.2;
    margin-bottom: 14px;
}

.hero-text p {
    color: var(--muted);
    font-size: 15px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    margin: 20px 0 10px;
    flex-wrap: wrap;
}

.hero-subtext {
    font-size: 13px;
    color: #9ca3af;
}

.btn {
    border-radius: 999px;
    padding: 9px 18px;
    border: 1px solid transparent;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease,
        border-color 0.12s ease, color 0.12s ease;
}

.btn.primary {
    background: linear-gradient(135deg, #4f46e5, #22d3ee);
    box-shadow: 0 14px 30px rgba(79, 70, 229, 0.6);
    color: #f9fafb;
}

.btn.primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 35px rgba(79, 70, 229, 0.8);
}

.btn.secondary {
    border-color: rgba(148, 163, 184, 0.45);
    color: #e5e7eb;
    background: radial-gradient(circle at top left, rgba(148, 163, 184, 0.15), transparent);
}

.btn.secondary:hover {
    border-color: #4f46e5;
    background: radial-gradient(circle at top left, rgba(79, 70, 229, 0.25), transparent);
}

.btn.full-width {
    width: 100%;
}

/* Hero card */

.hero-card {
    background: radial-gradient(circle at 0 0, rgba(79, 70, 229, 0.18), transparent 55%),
        linear-gradient(to bottom right, #020617, #020617, #020617);
    border-radius: 24px;
    border: 1px solid rgba(148, 163, 184, 0.3);
    padding: 20px 18px;
    box-shadow: var(--shadow-card);
}

.hero-card h2 {
    margin-top: 0;
    margin-bottom: 16px;
    font-size: 18px;
}

.stats-list {
    list-style: none;
    padding: 0;
    margin: 0 0 10px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 14px;
}

.stats-list li {
    background: linear-gradient(
        135deg,
        rgba(15, 23, 42, 0.95),
        rgba(15, 23, 42, 0.85)
    );
    border-radius: 14px;
    padding: 10px 11px;
    border: 1px solid rgba(148, 163, 184, 0.28);
}

.stats-list .label {
    display: block;
    font-size: 11px;
    color: #9ca3af;
    margin-bottom: 4px;
}

.stats-list .value {
    font-size: 17px;
    font-weight: 600;
}

.card-note {
    margin: 0;
    font-size: 11px;
    color: #9ca3af;
}

/* Sections */

.section {
    padding: 52px 0;
}

.section-alt {
    background: radial-gradient(circle at top, #020617 0, #020617 48%, #030712 100%);
    border-top: 1px solid rgba(15, 23, 42, 0.9);
    border-bottom: 1px solid rgba(15, 23, 42, 0.9);
}

.section h2 {
    font-size: 22px;
    margin-top: 0;
    margin-bottom: 14px;
}

.section-intro {
    margin-top: 0;
    margin-bottom: 22px;
    color: var(--muted);
    font-size: 14px;
}

/* Cards grid */

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

.card {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.9));
    border-radius: 18px;
    padding: 16px 16px 18px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    box-shadow: var(--shadow-soft);
    font-size: 14px;
}

.card h3 {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 16px;
}

/* Features */

.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 18px;
}

.feature-item {
    background: radial-gradient(circle at top left, rgba(79, 70, 229, 0.15), transparent),
        linear-gradient(to bottom right, #020617, #020617);
    border-radius: 18px;
    padding: 16px;
    border: 1px solid rgba(55, 65, 81, 0.85);
}

.feature-item h3 {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 15px;
}

/* Steps */

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

.step {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.9));
    border-radius: 18px;
    padding: 16px 16px 18px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    position: relative;
    padding-top: 30px;
    font-size: 14px;
}

.step-number {
    position: absolute;
    top: 10px;
    left: 14px;
    width: 22px;
    height: 22px;
    border-radius: 999px;
    background: radial-gradient(circle at 30% 0, #a5b4fc 0, #4f46e5 70%, #1d4ed8 100%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    color: white;
    box-shadow: 0 10px 20px rgba(79, 70, 229, 0.7);
}

.step h3 {
    margin-top: