:root {
    --bg: #06111f;
    --bg-soft: #0d1b31;
    --surface: rgba(10, 22, 40, 0.68);
    --surface-strong: rgba(8, 17, 31, 0.88);
    --text: #d8e4ff;
    --text-soft: #8da2c6;
    --line: rgba(140, 171, 230, 0.14);
    --line-strong: rgba(147, 183, 255, 0.24);
    --accent: #57e3ff;
    --accent-warm: #ff8b5e;
    --accent-pink: #ff52c9;
    --shadow: 0 24px 80px rgba(3, 8, 16, 0.45);
    --radius: 30px;
    --ease: 280ms cubic-bezier(0.22, 1, 0.36, 1);
    --max-width: 1240px;
    --pointer-x: 50%;
    --pointer-y: 50%;
    --hero-scroll: 0;
    --title-burst: 0;
    --liquid-x: 50%;
    --liquid-y: 50%;
    --liquid-energy: 0;
    --liquid-drift-x: 0px;
    --liquid-drift-y: 0px;
    --liquid-prism: 0;
    font-family: 'Avenir Next', 'SF Pro Display', 'PingFang SC', 'Noto Sans SC', sans-serif;
    color: var(--text);
    background: radial-gradient(circle at 20% 20%, rgba(87, 227, 255, 0.08), transparent 22%), radial-gradient(circle at 80% 12%, rgba(255, 82, 201, 0.09), transparent 18%), radial-gradient(circle at 50% 80%, rgba(255, 139, 94, 0.08), transparent 26%), linear-gradient(180deg, #07101d, #040a13 45%, #07111d);
    color-scheme: dark;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
}

body::before,
body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

body::before {
    background: linear-gradient(rgba(138, 163, 217, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(138, 163, 217, 0.06) 1px, transparent 1px);
    background-size: 46px 46px;
    mask-image: radial-gradient(circle at center, black 34%, transparent 88%);
}

body::after {
    background: radial-gradient(circle at var(--pointer-x) var(--pointer-y), rgba(87, 227, 255, 0.12), transparent 20%);
    transition: background-position 120ms linear;
}

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

.site-shell {
    position: relative;
    z-index: 1;
    width: min(calc(100% - 24px), var(--max-width));
    margin: 12px auto;
    border-radius: 34px;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(11, 21, 37, 0.86), rgba(5, 12, 22, 0.96)), var(--surface-strong);
    box-shadow: var(--shadow);
    overflow: clip;
}

.site-shell::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(87, 227, 255, 0.06), transparent 26%, transparent 62%, rgba(255, 82, 201, 0.05));
    pointer-events: none;
}

.topbar {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 24px clamp(20px, 4vw, 44px) 20px;
    backdrop-filter: blur(22px);
    background: linear-gradient(180deg, rgba(6, 15, 28, 0.88), rgba(6, 15, 28, 0.36));
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
    transition:
        box-shadow var(--ease),
        background var(--ease);
    z-index: 10;
}

.topbar::after {
    content: '';
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(87, 227, 255, 0.45), rgba(255, 82, 201, 0.35), transparent);
    opacity: 0;
    transform: scaleX(0.86);
    transition:
        opacity var(--ease),
        transform var(--ease);
    pointer-events: none;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-pink));
    color: #021018;
    font-weight: 800;
    letter-spacing: 0.08em;
    box-shadow: 0 14px 32px rgba(87, 227, 255, 0.26);
}

.brand-copy {
    display: flex;
    flex-direction: column;
}

.brand-copy strong {
    font-size: 0.98rem;
}

.brand-copy small {
    color: var(--text-soft);
    font-size: 0.8rem;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 0.95rem;
    color: var(--text-soft);
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: rgba(11, 21, 37, 0.72);
    align-items: center;
    justify-content: center;
    gap: 4px;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: var(--text);
    transition:
        transform var(--ease),
        opacity var(--ease);
}

.nav a {
    position: relative;
    transition: color var(--ease);
}

.nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, var(--accent), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--ease);
}

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

.nav a:hover::after {
    transform: scaleX(1);
}

.eyebrow {
    margin: 0 0 18px;
    font-size: 0.76rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--accent);
}

.button {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 156px;
    padding: 15px 24px;
    border-radius: 999px;
    border: 1px solid transparent;
    overflow: hidden;
    font-weight: 700;
    transition:
        transform var(--ease),
        box-shadow var(--ease),
        border-color var(--ease),
        background var(--ease);
}

.button:hover {
    transform: translateY(-3px);
}

.button-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-warm));
    color: #031018;
    box-shadow: 0 18px 34px rgba(87, 227, 255, 0.18);
}

.button-secondary {
    background: rgba(13, 27, 49, 0.54);
    border-color: var(--line-strong);
}

.button-glint {
    position: absolute;
    inset: -120% auto auto -40%;
    width: 42%;
    height: 280%;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.52), transparent);
    transform: rotate(24deg);
    animation: glint 4.5s linear infinite;
}

[data-reveal] {
    opacity: 0;
    transform: translateY(28px) scale(0.985);
    transition:
        opacity 760ms cubic-bezier(0.22, 1, 0.36, 1),
        transform 760ms cubic-bezier(0.22, 1, 0.36, 1);
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.tilt-card {
    transform-style: preserve-3d;
    transition:
        transform 160ms ease,
        border-color 160ms ease,
        box-shadow 160ms ease;
}

.tilt-card:hover {
    border-color: rgba(87, 227, 255, 0.32);
    box-shadow: 0 30px 70px rgba(3, 8, 16, 0.56);
}

@keyframes glint {
    0% {
        transform: translateX(-140%) rotate(24deg);
    }

    100% {
        transform: translateX(320%) rotate(24deg);
    }
}

@media (max-width: 860px) {
    .topbar {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        flex-wrap: nowrap;
        gap: 14px;
        padding: 14px;
    }

    .topbar.nav-open {
        box-shadow: 0 14px 36px rgba(2, 8, 16, 0.48);
        background: linear-gradient(180deg, rgba(6, 15, 28, 0.96), rgba(6, 15, 28, 0.72));
    }

    .topbar.nav-open::after {
        opacity: 1;
        transform: scaleX(1);
    }

    .brand {
        width: calc(100% - 56px);
        flex: 1;
        min-width: 0;
        overflow: hidden;
    }

    .nav-toggle {
        display: inline-flex;
        flex-direction: column;
        flex: 0 0 auto;
        margin-left: auto;
    }

    .nav {
        position: absolute;
        top: calc(100% + 6px);
        right: 0;
        width: min(92vw, 320px);
        display: grid;
        align-content: start;
        gap: 10px;
        padding: 12px;
        border: 1px solid var(--line-strong);
        border-radius: 14px;
        background: rgba(6, 15, 28, 0.96);
        backdrop-filter: blur(12px);
        box-shadow: 0 18px 50px rgba(3, 8, 16, 0.45);
        pointer-events: none;
        opacity: 0;
        transform: translateY(-10px) scale(0.96);
        transform-origin: top right;
        filter: blur(1.5px);
        transition:
            opacity 220ms ease,
            transform 340ms cubic-bezier(0.18, 0.9, 0.22, 1),
            filter 260ms ease;
        z-index: 30;
    }

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

    .nav a {
        display: block;
        border: 1px solid var(--line);
        border-radius: 10px;
        padding: 10px 12px;
        background: rgba(11, 21, 37, 0.72);
        opacity: 0;
        transform: translateY(8px);
        transition:
            opacity 220ms ease,
            transform 280ms cubic-bezier(0.22, 1, 0.36, 1),
            border-color var(--ease),
            background var(--ease);
    }

    .topbar.nav-open .nav a {
        opacity: 1;
        transform: translateY(0);
    }

    .topbar.nav-open .nav a:nth-child(1) {
        transition-delay: 30ms;
    }

    .topbar.nav-open .nav a:nth-child(2) {
        transition-delay: 60ms;
    }

    .topbar.nav-open .nav a:nth-child(3) {
        transition-delay: 90ms;
    }

    .topbar.nav-open .nav a:nth-child(4) {
        transition-delay: 120ms;
    }

    .topbar.nav-open .nav a:nth-child(5) {
        transition-delay: 150ms;
    }

    .topbar.nav-open .nav a:nth-child(6) {
        transition-delay: 180ms;
    }

    .nav a:hover {
        border-color: rgba(87, 227, 255, 0.45);
        background: rgba(87, 227, 255, 0.12);
    }

    .topbar.nav-open .nav-toggle span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }

    .topbar.nav-open .nav-toggle span:nth-child(2) {
        opacity: 0;
    }

    .topbar.nav-open .nav-toggle span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }
}

@media (max-width: 480px) {
    .site-shell {
        width: calc(100% - 8px);
        margin: 4px auto;
        border-radius: 16px;
    }

    body::before {
        background-size: 28px 28px;
    }

    .brand-mark {
        width: 40px;
        height: 40px;
        border-radius: 12px;
        font-size: 0.82rem;
    }

    .brand-copy strong {
        font-size: 0.9rem;
    }

    .brand-copy small {
        font-size: 0.74rem;
    }

    .nav {
        width: min(94vw, 300px);
        right: 0;
    }

    .nav a {
        padding: 9px 10px;
        font-size: 0.88rem;
    }

    .eyebrow {
        font-size: 0.66rem;
        letter-spacing: 0.14em;
        margin-bottom: 10px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    [data-reveal] {
        opacity: 1;
        transform: none;
    }
}