:root {
    --bg: #06070d;
    --bg-alt: #0d0f1a;
    --primary: #5b7cfe;
    --primary-light: #7c97ff;
    --accent: #1cd4d4;
    --text: #f7f8ff;
    --muted: rgba(247, 248, 255, 0.7);
    --card-bg: rgba(13, 15, 26, 0.85);
    --border: rgba(91, 124, 254, 0.15);
    --gradient: linear-gradient(135deg, rgba(91, 124, 254, 0.9), rgba(28, 212, 212, 0.9));
    --radius: 18px;
    --shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.55);
    --shadow-soft: 0 18px 40px -20px rgba(91, 124, 254, 0.25);
    --transition: all 0.3s ease;
    --space: clamp(16px, 2vw, 24px);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

.container {
    width: min(1150px, calc(100% - 2*var(--space)));
    margin: 0 auto;
}

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(6, 7, 13, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
}

.logo {
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    display: inline-flex;
    gap: 6px;
    align-items: center;
}

.nav {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav__link {
    font-weight: 500;
    color: var(--muted);
    padding: 10px 0;
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    height: 2px;
    width: 0;
    left: 0;
    bottom: 0;
    background: var(--gradient);
    transition: width 0.3s ease;
}

.nav__link:hover,
.nav__link:focus {
    color: var(--text);
}

.nav__link:hover::after,
.nav__link:focus::after {
    width: 100%;
}

.nav__link--cta {
    padding: 10px 18px;
    border: 1px solid rgba(91, 124, 254, 0.4);
    border-radius: 999px;
    letter-spacing: 0.02em;
}

.nav__trigger {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 40px;
    height: 40px;
    padding: 8px;
    justify-content: center;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
}

.nav__trigger span {
    height: 2px;
    background: var(--text);
    border-radius: 999px;
    transition: var(--transition);
}

.nav__trigger--active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.nav__trigger--active span:nth-child(2) {
    opacity: 0;
}

.nav__trigger--active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.hero {
    padding: 120px 0 90px;
    background: radial-gradient(circle at top right, rgba(91, 124, 254, 0.25), transparent 45%), radial-gradient(circle at bottom left, rgba(28, 212, 212, 0.2), transparent 45%);
}

.hero__inner {
    display: grid;
    gap: 50px;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    align-items: center;
}

.hero__content h1 {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero__content p {
    font-size: 1.1rem;
    color: var(--muted);
    margin-bottom: 28px;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 32px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    font-weight: 600;
    padding: 14px 22px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.98rem;
}

.btn--primary {
    background: var(--gradient);
    color: #0d0f1a;
    box-shadow: var(--shadow-soft);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 45px -15px rgba(28, 212, 212, 0.5);
}

.btn--ghost {
    border: 1px solid rgba(91, 124, 254, 0.4);
    color: var(--text);
}

.btn--ghost:hover {
    border-color: rgba(91, 124, 254, 0.9);
    box-shadow: 0 10px 30px -15px rgba(91, 124, 254, 0.65);
    transform: translateY(-2px);
}

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

.hero__stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 18px;
}

.hero__stat-number {
    font-size: 2rem;
    font-weight: 800;
    display: block;
}

.hero__stat-label {
    color: var(--muted);
    font-size: 0.88rem;
}

.hero__visual {
    position: relative;
}

.hero__glass {
    padding: 28px;
    background: linear-gradient(135deg, rgba(13, 15, 26, 0.8), rgba(13, 15, 26, 0.4));
    border-radius: 22px;
    border: 1px solid rgba(91, 124, 254, 0.2);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}

.hero__glass h3 {
    margin: 0 0 12px;
    font-size: 1.2rem;
}

.hero__glass p {
    margin: 0 0 16px;
    color: var(--muted);
    font-size: 0.95rem;
}

.hero__glass ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 16px;
}

.hero__glass li {
    padding: 14px;
    border-radius: 14px;
    background: rgba(91, 124, 254, 0.08);
    border: 1px solid rgba(91, 124, 254, 0.15);
}

.hero__glass li span {
    font-weight: 600;
    display: block;
    margin-bottom: 6px;
}

.hero__glass li em {
    font-style: normal;
    color: var(--muted);
    font-size: 0.88rem;
}

.hero__glow {
    position: absolute;
    inset: -40px;
    background: radial-gradient(circle, rgba(91, 124, 254, 0.25), transparent 60%);
    z-index: -1;
    filter: blur(20px);
}

.section {
    padding: 90px 0;
}

.section h2 {
    font-size: clamp(2rem, 4vw, 2.6rem);
    margin-bottom: 36px;
    text-align: center;
}

.section--features {
    background: var(--bg-alt);
}

.grid {
    display: grid;
    gap: 24px;
}

.grid--features {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 28px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, border 0.3s ease;
}

.card:hover {
    transform: translateY(-6px);
    border-color: rgba(91, 124, 254, 0.4);
}

.feature .card__icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.feature h3 {
    margin: 0 0 12px;
}

.feature p {
    color: var(--muted);
    margin: 0;
}

.section--gradient {
    background: linear-gradient(135deg, rgba(9, 10, 22, 0.95), rgba(9, 20, 32, 0.95));
}

.architecture {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    align-items: center;
}

.architecture__content p {
    color: var(--muted);
}

.architecture__list {
    list-style: none;
    padding: 0;
    margin: 32px 0 0;
    display: grid;
    gap: 18px;
}

.architecture__list li {
    background: rgba(91, 124, 254, 0.1);
    border-radius: 16px;
    padding: 18px 20px;
    border: 1px solid rgba(91, 124, 254, 0.2);
}

.architecture__list strong {
    display: block;
    font-size: 1rem;
    margin-bottom: 8px;
}

.architecture__list span {
    color: var(--muted);
    font-size: 0.9rem;
}

.architecture__diagram {
    display: grid;
    gap: 14px;
}

.diagram__node {
    padding: 16px;
    border-radius: 14px;
    background: rgba(14, 17, 28, 0.85);
    border: 1px solid rgba(28, 212, 212, 0.2);
    text-align: center;
    font-weight: 600;
    letter-spacing: 0.02em;
    box-shadow: 0 18px 45px -30px rgba(28, 212, 212, 0.7);
}

.diagram__node--primary {
    background: var(--gradient);
    color: #040510;
}

.diagram__node--secondary {
    border: 1px solid rgba(91, 124, 254, 0.4);
}

.timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 32px;
    position: relative;
}

.timeline__item {
    padding: 26px;
    background: var(--card-bg);
    border-radius: 20px;
    border: 1px solid rgba(91, 124, 254, 0.1);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.timeline__item:hover {
    border-color: rgba(91, 124, 254, 0.3);
}

.timeline__step {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(91, 124, 254, 0.15);
    border: 1px solid rgba(91, 124, 254, 0.3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-bottom: 16px;
}

.timeline__item h3 {
    margin: 0 0 10px;
    font-size: 1.2rem;
}

.timeline__item p {
    margin: 0;
    color: var(--muted);
}

.section--dark {
    background: radial-gradient(circle at center, rgba(12, 16, 32, 0.9), rgba(6, 7, 13, 0.95));
}

.grid--use-cases {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.case h3 {
    margin: 0 0 12px;
    font-size: 1.15rem;
}

.case p {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.grid--testimonials {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.testimonial {
    margin: 0;
    padding: 30px;
    background: rgba(91, 124, 254, 0.08);
    border-radius: 18px;
    border: 1px solid rgba(91, 124, 254, 0.18);
    color: var(--muted);
    font-size: 0.96rem;
    line-height: 1.7;
}

.testimonial cite {
    display: block;
    margin-top: 18px;
    font-style: normal;
    color: var(--text);
    font-weight: 600;
}

.section--highlight {
    background: linear-gradient(160deg, rgba(91, 124, 254, 0.2), rgba(9, 10, 22, 0.9));
    border-top: 1px solid rgba(91, 124, 254, 0.2);
    border-bottom: 1px solid rgba(91, 124, 254, 0.2);
}

.demo {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 40px;
    align-items: stretch;
}

.demo__content ul {
    list-style: none;
    padding: 0;
    margin: 24px 0 0;
    display: grid;
    gap: 12px;
    color: var(--muted);
}

.demo__form {
    background: rgba(6, 7, 13, 0.85);
    border-radius: 22px;
    padding: 28px;
    border: 1px solid rgba(91, 124, 254, 0.2);
    box-shadow: var(--shadow);
    display: grid;
    gap: 18px;
}

.demo__form h3 {
    margin: 0;
    font-size: 1.4rem;
}

.demo__form label {
    display: grid;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--muted);
}

.demo__form input,
.demo__form textarea {
    background: rgba(13, 15, 26, 0.9);
    border: 1px solid rgba(91, 124, 254, 0.2);
    border-radius: 12px;
    padding: 12px 14px;
    color: var(--text);
    font-family: inherit;
    transition: border 0.2s ease, box-shadow 0.2s ease;
}

.demo__form input:focus,
.demo__form textarea:focus {
    border-color: rgba(28, 212, 212, 0.6);
    box-shadow: 0 0 0 2px rgba(28, 212, 212, 0.25);
    outline: none;
}

.demo__notice {
    margin: 0;
    color: rgba(247, 248, 255, 0.6);
    font-size: 0.85rem;
    text-align: center;
}

.whitepaper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 36px;
    align-items: center;
}

.whitepaper__stats {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.whitepaper__stat {
    background: rgba(28, 212, 212, 0.07);
    border-radius: 18px;
    padding: 20px;
    border: 1px solid rgba(28, 212, 212, 0.2);
    text-align: center;
}

.whitepaper__number {
    display: block;
    font-size: 1.9rem;
    font-weight: 700;
}

.whitepaper__label {
    color: var(--muted);
    font-size: 0.85rem;
    letter-spacing: 0.02em;
}

.section--faq {
    background: linear-gradient(180deg, rgba(6, 7, 13, 0.98), rgba(12, 16, 32, 0.95));
}

.accordion {
    max-width: 750px;
    margin: 0 auto;
    display: grid;
    gap: 16px;
}

.accordion__item {
    background: rgba(13, 15, 26, 0.9);
    border-radius: 16px;
    border: 1px solid rgba(91, 124, 254, 0.18);
    overflow: hidden;
    transition: var(--transition);
}

.accordion__item--open {
    border-color: rgba(91, 124, 254, 0.4);
    box-shadow: var(--shadow-soft);
}

.accordion__header {
    width: 100%;
    padding: 18px 22px;
    background: transparent;
    border: none;
    color: var(--text);
    font-weight: 600;
    font-size: 1rem;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    position: relative;
}

.accordion__header::after {
    content: '+';
    font-size: 1.4rem;
    transition: transform 0.2s ease;
}

.accordion__item--open .accordion__header::after {
    transform: rotate(45deg);
}

.accordion__content {
    max-height: 0;
    overflow: hidden;
    padding: 0 22px;
    color: var(--muted);
    font-size: 0.92rem;
    transition: max-height 0.3s ease;
}

.accordion__content p {
    margin: 0 0 20px;
}

.footer {
    padding: 70px 0 40px;
    background: #05060c;
    border-top: 1px solid rgba(91, 124, 254, 0.15);
}

.footer__inner {
    display: grid;
    gap: 32px;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    align-items: start;
    margin-bottom: 36px;
}

.footer__brand p {
    color: var(--muted);
    margin-top: 12px;
}

.footer__links h4,
.footer__contact h4,
.footer__cta h4 {
    margin-bottom: 16px;
    font-size: 1rem;
}

.footer__links ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 10px;
}

.footer__links a {
    color: var(--muted);
    font-size: 0.95rem;
}

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

.footer__contact p,
.footer__contact address {
    color: var(--muted);
    font-style: normal;
    margin: 4px 0;
    font-size: 0.95rem;
}

.footer__cta form {
    display: grid;
    gap: 12px;
}

.footer__cta input {
    background: rgba(13, 15, 26, 0.9);
    border: 1px solid rgba(91, 124, 254, 0.2);
    border-radius: 12px;
    padding: 12px 14px;
    color: var(--text);
    transition: border 0.2s ease, box-shadow 0.2s ease;
}

.footer__cta input:focus {
    border-color: rgba(91, 124, 254, 0.5);
    box-shadow: 0 0 0 2px rgba(91, 124, 254, 0.25);
    outline: none;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: space-between;
    color: rgba(247, 248, 255, 0.6);
    font-size: 0.88rem;
}

.footer__socials {
    display: flex;
    gap: 14px;
}

.footer__socials a {
    color: rgba(247, 248, 255, 0.7);
}

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

@media (max-width: 900px) {
    .nav {
        position: absolute;
        top: 80px;
        right: var(--space);
        background: rgba(6, 7, 13, 0.95);
        border-radius: 18px;
        border: 1px solid rgba(91, 124, 254, 0.18);
        box-shadow: var(--shadow);
        padding: 16px 22px;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        width: min(220px, 80vw);
        transform: translateY(-20px);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
    }

    .nav--open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .nav__trigger {
        display: flex;
    }

    .header__inner {
        position: relative;
    }
}

@media (max-width: 600px) {
    .hero__stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .timeline {
        gap: 24px;
    }

    .demo__form,
    .hero__glass {
        padding: 22px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition-duration: 0.001ms !important;
        animation-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}