:root {
    color-scheme: dark;
    --bg-0: #040a16;
    --bg-1: #09182d;
    --bg-2: #0f2946;
    --text-main: #ecf5ff;
    --text-muted: #b8ccde;
    --text-soft: #8fa7bd;
    --accent-cyan: #58dbff;
    --accent-turquoise: #3ce8cf;
    --accent-ice: #a6e6ff;
    --accent-violet: #8b80ff;
    --line: rgba(166, 204, 235, 0.22);
    --glass: rgba(9, 26, 44, 0.6);
    --glass-strong: rgba(7, 20, 37, 0.82);
    --radius-lg: 24px;
    --radius-md: 16px;
    --shadow-soft: 0 18px 56px rgba(0, 0, 0, 0.38);
    --shadow-glow: 0 0 0 1px rgba(88, 219, 255, 0.28), 0 14px 38px rgba(35, 212, 255, 0.2);
    --container: min(1160px, calc(100% - 2.2rem));
    --trans-fast: 220ms ease;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Outfit", "Segoe UI", sans-serif;
    color: var(--text-main);
    line-height: 1.65;
    background:
        radial-gradient(920px 540px at 8% 16%, rgba(60, 232, 207, 0.18), transparent 64%),
        radial-gradient(980px 620px at 92% -10%, rgba(139, 128, 255, 0.18), transparent 64%),
        radial-gradient(780px 460px at 68% 28%, rgba(88, 219, 255, 0.14), transparent 68%),
        linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
    overflow-x: hidden;
}

body::before,
body::after {
    content: "";
    position: fixed;
    pointer-events: none;
    z-index: -1;
}

body::before {
    inset: auto -20% -26% -20%;
    height: 60vh;
    background:
        radial-gradient(62% 66% at 24% 36%, rgba(88, 219, 255, 0.15), transparent 72%),
        radial-gradient(42% 48% at 74% 64%, rgba(139, 128, 255, 0.12), transparent 80%);
    filter: blur(22px);
    animation: auroraDrift 16s ease-in-out infinite alternate;
}

body::after {
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 44px 44px;
    opacity: 0.08;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.42), transparent 92%);
}

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

.container {
    width: var(--container);
    margin-inline: auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    background: rgba(4, 11, 23, 0.78);
    border-bottom: 1px solid rgba(166, 204, 235, 0.18);
}

.nav-wrap {
    min-height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem 1.1rem;
    flex-wrap: wrap;
    padding: 0.75rem 0;
}

.brand {
    font-family: "Rajdhani", sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

.brand-logo {
    width: 32px;
    height: 32px;
    object-fit: contain;
    filter: drop-shadow(0 0 10px rgba(60, 232, 207, 0.35));
}

.brand span {
    line-height: 1;
}

.nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.25rem;
}

.nav-list a {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.45rem 0.65rem;
    border-radius: 10px;
    transition: color var(--trans-fast), background-color var(--trans-fast);
}

.nav-list a:hover,
.nav-list a:focus-visible {
    color: var(--text-main);
    background: rgba(166, 204, 235, 0.12);
}

.btn {
    min-height: 44px;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.7rem 1.16rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.42rem;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    transition: transform var(--trans-fast), box-shadow var(--trans-fast), background-color var(--trans-fast), border-color var(--trans-fast);
}

.btn:hover,
.btn:focus-visible {
    transform: translateY(-2px);
}

.btn-primary {
    color: #042638;
    background: linear-gradient(140deg, var(--accent-turquoise), var(--accent-cyan));
    border-color: rgba(166, 204, 235, 0.42);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    color: var(--text-main);
    border-color: rgba(166, 204, 235, 0.34);
    background: linear-gradient(160deg, rgba(11, 32, 57, 0.64), rgba(8, 20, 36, 0.86));
}

main {
    display: block;
}

.hero {
    padding: 5.1rem 0 4.6rem;
}

.hero-grid {
    display: grid;
    gap: 1.9rem;
    align-items: center;
}

.eyebrow {
    margin: 0;
    color: var(--accent-ice);
    letter-spacing: 0.16em;
    font-size: 0.78rem;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.eyebrow::before {
    content: "";
    width: 24px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-ice));
}

h1,
h2,
h3,
h4 {
    margin: 0;
    line-height: 1.2;
}

.hero h1 {
    margin-top: 0.75rem;
    font-family: "Rajdhani", sans-serif;
    font-size: clamp(2.4rem, 9vw, 4.8rem);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-wrap: balance;
}

.hero h2 {
    margin-top: 0.72rem;
    color: var(--accent-ice);
    font-size: clamp(1.1rem, 3.8vw, 1.44rem);
    font-weight: 500;
}

.hero p {
    margin: 1.2rem 0 0;
    max-width: 64ch;
    color: var(--text-muted);
}

.hero-actions {
    margin-top: 1.8rem;
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.hero-emblem {
    min-height: 290px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(166, 204, 235, 0.2);
    background:
        radial-gradient(18rem 13rem at 26% 72%, rgba(60, 232, 207, 0.18), transparent 74%),
        radial-gradient(18rem 13rem at 78% 22%, rgba(139, 128, 255, 0.18), transparent 74%),
        linear-gradient(155deg, rgba(9, 24, 43, 0.78), rgba(7, 18, 33, 0.82));
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(10px);
    display: grid;
    place-items: center;
    position: relative;
    overflow: hidden;
    padding: 2rem;
}

.hero-emblem::before {
    content: "";
    position: absolute;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(88, 219, 255, 0.18), rgba(88, 219, 255, 0) 65%);
    filter: blur(6px);
}

.hero-logo {
    width: min(280px, 76%);
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 0 32px rgba(88, 219, 255, 0.3));
    position: relative;
    z-index: 1;
}

.section {
    padding: 2.8rem 0;
}

.features-page .hero {
    padding: 4.4rem 0 2.2rem;
}

.features-page .section {
    padding: 1.6rem 0 2rem;
}

.features-page .feature-tabs.panel {
    padding: clamp(0.8rem, 2.5vw, 1.2rem);
}

.section-head {
    max-width: 74ch;
    margin-bottom: 1.35rem;
}

.section-head h3 {
    font-family: "Rajdhani", sans-serif;
    font-size: clamp(1.56rem, 5vw, 2.2rem);
    letter-spacing: 0.03em;
    text-transform: uppercase;
    text-wrap: balance;
}

.section-head p {
    margin: 0.78rem 0 0;
    color: var(--text-muted);
}

.panel {
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background: linear-gradient(170deg, var(--glass), var(--glass-strong));
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(10px);
    padding: clamp(1rem, 4vw, 2rem);
}

.cards-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}

.card {
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: linear-gradient(170deg, rgba(10, 30, 52, 0.62), rgba(8, 20, 36, 0.86));
    padding: 1rem;
    transition: transform var(--trans-fast), border-color var(--trans-fast);
}

.card:hover {
    transform: translateY(-2px);
    border-color: rgba(88, 219, 255, 0.45);
}

.card h4 {
    color: var(--accent-ice);
    font-size: 1.05rem;
    margin-bottom: 0.52rem;
}

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

.cards-grid--home {
    grid-template-columns: 1fr;
}

.cards-grid--features {
    grid-template-columns: 1fr;
}

.feature-tabs {
    display: grid;
    gap: 1rem;
    padding: clamp(0.9rem, 3vw, 1.4rem);
}

.feature-tablist {
    display: flex;
    flex-direction: row;
    gap: 0.55rem;
    overflow-x: auto;
    padding-bottom: 0.35rem;
    scrollbar-width: thin;
}

.feature-tab {
    flex: 0 0 auto;
    min-width: 210px;
    border: 1px solid rgba(166, 204, 235, 0.24);
    border-radius: 12px;
    background: linear-gradient(165deg, rgba(11, 32, 56, 0.62), rgba(8, 19, 35, 0.88));
    color: var(--text-main);
    padding: 0.75rem 0.85rem;
    text-align: left;
    font-family: inherit;
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.3;
    cursor: pointer;
    transition: border-color var(--trans-fast), transform var(--trans-fast), background-color var(--trans-fast);
}

.feature-tab span {
    display: block;
    margin-top: 0.3rem;
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-soft);
}

.feature-tab:hover,
.feature-tab:focus-visible {
    border-color: rgba(88, 219, 255, 0.46);
    transform: translateY(-1px);
}

.feature-tab.is-active {
    border-color: rgba(88, 219, 255, 0.68);
    background: linear-gradient(165deg, rgba(18, 48, 82, 0.72), rgba(9, 23, 42, 0.92));
    box-shadow: 0 0 0 1px rgba(88, 219, 255, 0.22);
}

.feature-panels {
    border: 1px solid rgba(166, 204, 235, 0.22);
    border-radius: var(--radius-md);
    background: linear-gradient(170deg, rgba(10, 29, 50, 0.6), rgba(8, 19, 34, 0.84));
    min-height: 320px;
}

.feature-panel {
    display: none;
    padding: clamp(1rem, 3.2vw, 1.5rem);
}

.feature-panel.is-active {
    display: block;
}

.feature-panel h4 {
    color: var(--accent-ice);
    font-size: clamp(1.2rem, 3vw, 1.45rem);
    margin-bottom: 0.78rem;
}

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

.feature-panel p + p {
    margin-top: 0.85rem;
}

.feature-image {
    margin: 1rem 0 0;
    border: 1px solid rgba(166, 204, 235, 0.2);
    border-radius: 14px;
    background: linear-gradient(165deg, rgba(10, 29, 50, 0.62), rgba(8, 19, 34, 0.84));
    box-shadow: inset 0 0 0 1px rgba(166, 204, 235, 0.08), 0 10px 28px rgba(0, 0, 0, 0.22);
    padding: 0.72rem;
}

.feature-image img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 10px;
    border: 1px solid rgba(166, 204, 235, 0.16);
}

.feature-image figcaption {
    margin-top: 0.55rem;
    color: var(--text-soft);
    font-size: 0.84rem;
    line-height: 1.5;
}

.site-footer {
    border-top: 1px solid rgba(166, 204, 235, 0.16);
    margin-top: 1.4rem;
    padding: 1.5rem 0 2rem;
    color: var(--text-soft);
}

.footer-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.68rem;
}

.footer-title {
    margin: 0;
    color: var(--text-main);
    font-weight: 700;
}

.footer-meta {
    margin: 0;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.82rem;
}

.footer-links a {
    transition: color var(--trans-fast);
}

.footer-links a:hover,
.footer-links a:focus-visible {
    color: var(--accent-cyan);
}

.reveal {
    animation: fadeUp 520ms ease both;
}

.delay-1 {
    animation-delay: 120ms;
}

.delay-2 {
    animation-delay: 220ms;
}

@media (min-width: 760px) {
    .hero-grid {
        grid-template-columns: 1.15fr 0.85fr;
        gap: 2rem;
    }

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

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

    .feature-tabs {
        grid-template-columns: minmax(270px, 310px) minmax(0, 1fr);
        align-items: start;
    }

    .feature-tablist {
        flex-direction: column;
        overflow-x: visible;
        padding-bottom: 0;
    }

    .feature-tab {
        width: 100%;
        min-width: 0;
    }

    .footer-wrap {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(18px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes auroraDrift {
    from {
        transform: translate3d(-1.5%, 0, 0) scale(1);
    }

    to {
        transform: translate3d(1.5%, -1.5%, 0) scale(1.04);
    }
}