:root {
    --bg: #101722;
    --bg-deep: #0a0f17;
    --panel: rgba(255, 255, 255, 0.08);
    --panel-strong: rgba(255, 255, 255, 0.12);
    --line: rgba(255, 255, 255, 0.12);
    --text: #f6f7fb;
    --muted: #b8c0d4;
    --accent: #ff6b57;
    --accent-strong: #ff9d57;
    --mint: #7de2c3;
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Poppins", "Segoe UI", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(255, 107, 87, 0.16), transparent 28%),
        radial-gradient(circle at top right, rgba(125, 226, 195, 0.14), transparent 24%),
        linear-gradient(180deg, #162130 0%, var(--bg) 48%, var(--bg-deep) 100%);
    min-height: 100vh;
}

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

p {
    line-height: 1.7;
}

.shell {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(16px);
    background: rgba(10, 15, 23, 0.7);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px 0;
}

.brand {
    font-weight: 800;
    letter-spacing: 0.14em;
    font-size: 0.95rem;
}

.top-nav,
.footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}

.top-nav a,
.footer-nav a {
    color: var(--muted);
}

.nav-cta,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    font-weight: 700;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.nav-cta {
    padding: 10px 16px;
    color: #111827;
    background: linear-gradient(135deg, var(--mint), #d2fff0);
}

.hero {
    padding: 72px 0 36px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.7fr 1fr;
    gap: 28px;
    align-items: stretch;
}

.hero h1,
.page-hero h1 {
    font-size: clamp(2.7rem, 6vw, 5.1rem);
    line-height: 0.95;
    margin: 0 0 18px;
    letter-spacing: -0.04em;
}

.hero-copy,
.page-hero p {
    color: var(--muted);
    font-size: 1.08rem;
    max-width: 760px;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--accent-strong);
    font-size: 0.76rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.btn {
    padding: 14px 20px;
}

.btn-primary {
    color: white;
    background: linear-gradient(135deg, var(--accent), #c83956);
    box-shadow: 0 18px 40px rgba(255, 107, 87, 0.26);
}

.btn-secondary {
    color: white;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--line);
}

.hero-panel,
.content-card,
.feature-card,
.page-panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 26px;
    box-shadow: var(--shadow);
}

.hero-panel,
.content-card,
.page-panel {
    padding: 28px;
}

.hero-panel h2,
.content-card h2,
.page-panel h2,
.page-panel h3,
.feature-card h3 {
    margin-top: 0;
}

.check-list {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
}

.check-list li + li {
    margin-top: 14px;
}

.section-grid,
.feature-band,
.page-grid {
    display: grid;
    gap: 22px;
    margin: 28px auto;
}

.section-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card {
    padding: 24px;
}

.feature-card p,
.content-card p,
.page-panel p,
.page-panel li {
    color: var(--muted);
}

.article-layout {
    margin: 28px auto 64px;
}

.wide-card {
    padding: 30px;
}

.page-hero {
    padding: 72px 0 16px;
}

.page-grid {
    grid-template-columns: 1.2fr 0.8fr;
    padding-bottom: 56px;
}

.page-panel ul,
.page-panel ol {
    color: var(--muted);
    line-height: 1.7;
    padding-left: 22px;
}

.callout {
    border-left: 3px solid var(--accent-strong);
    padding-left: 14px;
}

.site-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(5, 8, 14, 0.45);
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    padding: 30px 0 50px;
}

@media (max-width: 900px) {
    .hero-grid,
    .section-grid,
    .feature-band,
    .page-grid,
    .footer-grid {
        grid-template-columns: 1fr;
        display: grid;
    }

    .nav-bar {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    .hero {
        padding-top: 48px;
    }

    .hero h1,
    .page-hero h1 {
        font-size: 2.5rem;
    }

    .hero-panel,
    .content-card,
    .page-panel,
    .feature-card {
        padding: 22px;
        border-radius: 22px;
    }
}