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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    font-family: var(--font-body);
    color: var(--text-primary);
    background:
        radial-gradient(circle at 20% 20%, rgba(123, 227, 255, 0.12), transparent 30%),
        radial-gradient(circle at 80% 0%, rgba(125, 140, 255, 0.22), transparent 35%),
        radial-gradient(circle at 50% 90%, rgba(95, 242, 198, 0.1), transparent 28%),
        var(--bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
}

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

button,
input,
textarea,
select {
    font: inherit;
}

button {
    cursor: pointer;
    border: 0;
    background: none;
}

main {
    position: relative;
    z-index: 2;
}

h1,
h2,
h3,
h4,
p,
ul {
    margin: 0;
}

ul {
    padding: 0;
    list-style: none;
}

section {
    position: relative;
}

.page-shell {
    position: relative;
    isolation: isolate;
}

.section {
    padding: 5.75rem 0;
}

.section-slim {
    padding: 1.25rem 0 0;
}

.hidden {
    display: none;
}

.centered {
    text-align: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.78rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--accent-primary);
}

.eyebrow::before {
    content: "";
    width: 36px;
    height: 1px;
    background: rgba(123, 227, 255, 0.5);
}

.section-heading {
    max-width: 760px;
    margin-bottom: 2rem;
}

.section-heading.centered {
    margin-inline: auto;
}

.section-heading h2,
.hero-copy h1,
.final-cta h2 {
    font-family: var(--font-heading);
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.section-heading h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
}

.section-copy,
.hero-text,
.narrative-card p,
.offer-copy p,
.mentor-copy p,
.guarantee-box p,
.site-footer p {
    color: var(--text-secondary);
}

.glass,
.glass-inner {
    background: linear-gradient(180deg, rgba(20, 34, 60, 0.8), rgba(11, 20, 37, 0.68));
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-soft), var(--shadow-glow);
    backdrop-filter: blur(18px);
}

.glass {
    border-radius: var(--radius-xl);
}

.glass-inner {
    border-radius: var(--radius-lg);
}

#particles-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.75;
}

.aurora {
    position: fixed;
    width: 38rem;
    height: 38rem;
    filter: blur(60px);
    opacity: 0.22;
    z-index: 0;
    border-radius: 50%;
}

.aurora-one {
    top: -12rem;
    left: -8rem;
    background: radial-gradient(circle, rgba(123, 227, 255, 0.85), transparent 60%);
}

.aurora-two {
    right: -10rem;
    top: 18rem;
    background: radial-gradient(circle, rgba(125, 140, 255, 0.78), transparent 62%);
}