:root {
    --color-bg: #0b0f1a;
    --color-bg-alt: #10162a;
    --color-surface: #151b2e;
    --color-border: #232b45;
    --color-text: #eef1f8;
    --color-text-muted: #9aa4c0;
    --color-primary: #6c5ce7;
    --color-primary-hover: #5a4bd1;
    --color-accent: #00d3a7;
    --radius: 14px;
    --max-width: 1140px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

ul {
    list-style: none;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 15, 26, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.navbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--color-text-muted);
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--color-text);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 13px 28px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 15px;
    transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid transparent;
    cursor: pointer;
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 8px 24px -8px rgba(108, 92, 231, 0.6);
}

.btn--primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn--ghost:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.btn--small {
    padding: 9px 20px;
    font-size: 14px;
}

.btn--full {
    width: 100%;
    text-align: center;
}

/* Hero */
.hero {
    padding: 120px 0 100px;
    text-align: center;
    background:
        radial-gradient(circle at 50% 0%, rgba(108, 92, 231, 0.25), transparent 60%);
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 999px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 800;
    letter-spacing: -0.03em;
    max-width: 780px;
    margin: 0 auto 24px;
}

.highlight {
    color: var(--color-accent);
}

.hero__subtitle {
    font-size: 18px;
    color: var(--color-text-muted);
    max-width: 560px;
    margin: 0 auto 36px;
}

.hero__actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.hero__note {
    font-size: 14px;
    color: var(--color-text-muted);
}

/* Logos */
.logos {
    padding: 40px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.logos__title {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 14px;
    margin-bottom: 24px;
}

.logos__grid {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    color: var(--color-text-muted);
    font-weight: 700;
    font-size: 18px;
    opacity: 0.6;
}

/* Section titles */
.section-title {
    text-align: center;
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 16px;
    max-width: 480px;
    margin: 0 auto 56px;
}

/* Features */
.features {
    padding: 100px 0;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
}

.feature-card__icon {
    font-size: 28px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

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

/* Pricing */
.pricing {
    padding: 100px 0;
    background: var(--color-bg-alt);
}

.pricing__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: stretch;
}

.price-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 36px 32px;
    display: flex;
    flex-direction: column;
    position: relative;
}

.price-card--featured {
    border-color: var(--color-primary);
    box-shadow: 0 20px 40px -20px rgba(108, 92, 231, 0.5);
}

.price-card__tag {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--color-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 999px;
}

.price-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--color-text-muted);
}

.price-card__price {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 24px;
}

.price-card__price span {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-muted);
}

.price-card ul {
    margin-bottom: 32px;
    flex: 1;
}

.price-card ul li {
    padding: 8px 0;
    color: var(--color-text-muted);
    font-size: 15px;
    border-bottom: 1px solid var(--color-border);
}

.price-card ul li:before {
    content: "✓ ";
    color: var(--color-accent);
    font-weight: 700;
}

/* FAQ */
.faq {
    padding: 100px 0;
}

.faq__list {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq__item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 20px 24px;
}

.faq__item summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 16px;
    list-style: none;
}

.faq__item summary::-webkit-details-marker {
    display: none;
}

.faq__item summary::after {
    content: "+";
    float: right;
    color: var(--color-text-muted);
}

.faq__item[open] summary::after {
    content: "−";
}

.faq__item p {
    margin-top: 12px;
    color: var(--color-text-muted);
    font-size: 15px;
}

/* CTA */
.cta {
    padding: 100px 0;
    background: radial-gradient(circle at 50% 100%, rgba(108, 92, 231, 0.25), transparent 60%);
}

.cta__inner {
    text-align: center;
}

.cta__inner h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    margin-bottom: 12px;
}

.cta__inner p {
    color: var(--color-text-muted);
    margin-bottom: 32px;
}

.cta__form {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    max-width: 480px;
    margin: 0 auto;
}

.cta__form input {
    flex: 1;
    min-width: 220px;
    padding: 13px 20px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 15px;
}

.cta__form input:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Footer */
.footer {
    padding: 32px 0;
    border-top: 1px solid var(--color-border);
}

.footer__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    color: var(--color-text-muted);
    font-size: 14px;
}

.footer__links {
    display: flex;
    gap: 24px;
}

/* Responsive */
@media (max-width: 900px) {
    .features__grid,
    .pricing__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
    }

    .features__grid,
    .pricing__grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 90px 0 70px;
    }
}