:root {
    --eh-black: #000;
    --eh-space: #07080b;
    --eh-panel: #111217;
    --eh-panel-soft: #1a1a1a;
    --eh-line: rgba(255, 255, 255, 0.12);
    --eh-text: #f5f2ea;
    --eh-muted: #a7a7a7;
    --eh-dim: #6c6c72;
    --eh-amber: #ff8c00;
    --eh-crimson: #c8321e;
    --eh-gold: #ffd99a;
    --eh-max: 1180px;
    --eh-serif: ui-serif, Georgia, "Times New Roman", serif;
    --eh-sans: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, Inter, "Helvetica Neue", Arial, sans-serif;
    --eh-numeric: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, Inter, "Helvetica Neue", Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background: var(--eh-black);
}

body.ehf-site {
    margin: 0;
    color: var(--eh-text);
    background: var(--eh-black);
    font-family: var(--eh-sans);
    line-height: 1.5;
}

body.ehf-site a {
    color: inherit;
}

.ehf-main {
    min-height: 100vh;
    overflow: hidden;
    background:
        radial-gradient(circle at 50% -10%, rgba(255, 140, 0, 0.11), transparent 34rem),
        linear-gradient(180deg, #000 0%, #040406 52%, #000 100%);
}

.ehf-nav {
    position: fixed;
    z-index: 20;
    top: 14px;
    left: 50%;
    width: min(calc(100% - 32px), var(--eh-max));
    height: 58px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 18px;
    transform: translateX(-50%);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.88);
    background: rgba(0, 0, 0, 0.34);
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.38);
    backdrop-filter: blur(12px) saturate(130%);
    -webkit-backdrop-filter: blur(12px) saturate(130%);
    pointer-events: none;
}

.ehf-nav a {
    text-decoration: none;
    pointer-events: auto;
}

.ehf-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    font-size: 12px;
}

.ehf-brand-mark {
    width: 22px;
    height: 22px;
    border: 1px solid rgba(255, 140, 0, 0.7);
    border-radius: 999px;
    box-shadow: 0 0 28px rgba(255, 140, 0, 0.45);
}

.ehf-nav-links {
    display: flex;
    align-items: center;
    gap: 22px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 13px;
}

.ehf-nav-links a {
    transition: color 220ms cubic-bezier(0.2, 0.8, 0.2, 1), border-color 220ms cubic-bezier(0.2, 0.8, 0.2, 1), background 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

.ehf-nav-cta {
    padding: 10px 15px;
    border: 1px solid rgba(255, 140, 0, 0.5);
    border-radius: 999px;
    color: var(--eh-gold);
    background: rgba(255, 140, 0, 0.08);
}

.ehf-hero {
    position: relative;
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 128px 24px 64px;
    isolation: isolate;
}

.ehf-starfield,
.ehf-hero-media {
    position: absolute;
    inset: 0;
}

.ehf-starfield {
    z-index: -3;
    opacity: 0.32;
}

.ehf-hero-media {
    z-index: -2;
    display: grid;
    place-items: center;
}

.ehf-hero-video-stack {
    position: absolute;
    z-index: 2;
    inset: 0;
    overflow: hidden;
}

.ehf-hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1250ms cubic-bezier(0.2, 0.8, 0.2, 1);
    will-change: opacity;
}

.ehf-hero-video.is-active {
    opacity: 0.86;
}

.ehf-cg-fallback {
    position: relative;
    z-index: 1;
    width: min(78vw, 760px);
    aspect-ratio: 1.3;
    display: grid;
    place-items: center;
    filter: drop-shadow(0 0 55px rgba(255, 116, 24, 0.24));
}

.ehf-singularity {
    position: relative;
    width: 520px;
    max-width: 82vw;
    aspect-ratio: 1;
    animation: ehf-float 8s ease-in-out infinite;
}

.ehf-void-sphere {
    position: absolute;
    z-index: 4;
    left: 50%;
    top: 44%;
    width: 170px;
    aspect-ratio: 1;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: #000;
    box-shadow:
        inset 0 0 2px rgba(255, 255, 255, 0.025),
        0 0 0 1px rgba(255, 255, 255, 0.018),
        0 38px 70px rgba(0, 0, 0, 0.9);
}

.ehf-accretion-disc,
.ehf-photon-ring {
    position: absolute;
    left: 50%;
    top: 44%;
    transform: translate(-50%, -50%) rotateX(72deg);
    border-radius: 50%;
}

.ehf-accretion-disc {
    z-index: 5;
    width: 420px;
    height: 112px;
    border: 11px solid transparent;
    background:
        radial-gradient(ellipse at 50% 50%, transparent 36%, rgba(255, 244, 196, 0.95) 42%, rgba(255, 140, 0, 0.86) 49%, rgba(197, 47, 22, 0.62) 57%, transparent 66%) border-box;
    mask: radial-gradient(ellipse at center, transparent 0 45%, #000 47% 63%, transparent 67%);
    filter: blur(0.2px) drop-shadow(0 0 24px rgba(255, 140, 0, 0.64));
    animation: ehf-disc 20s linear infinite;
}

.ehf-photon-ring {
    z-index: 3;
    width: 300px;
    height: 220px;
    border: 5px solid rgba(255, 194, 100, 0.62);
    filter: blur(0.1px) drop-shadow(0 0 25px rgba(255, 140, 0, 0.5));
    opacity: 0.9;
}

.ehf-photon-ring-top {
    clip-path: inset(0 0 48% 0);
    transform: translate(-50%, -52%) rotateX(48deg);
}

.ehf-photon-ring-bottom {
    clip-path: inset(54% 0 0 0);
    opacity: 0.38;
    transform: translate(-50%, -38%) rotateX(48deg);
}

.ehf-base {
    position: absolute;
    z-index: 1;
    left: 50%;
    top: 70%;
    width: 280px;
    height: 58px;
    transform: translateX(-50%);
    border-radius: 50%;
    background:
        radial-gradient(ellipse at 50% 25%, rgba(255, 255, 255, 0.06), transparent 42%),
        linear-gradient(180deg, #15151a, #050505);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.8);
}

.ehf-hero-copy {
    width: min(760px, 100%);
    margin-top: min(34vh, 240px);
    text-align: center;
}

.ehf-eyebrow {
    margin: 0 0 16px;
    color: var(--eh-amber);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    font-size: 12px;
    font-weight: 700;
}

.ehf-hero h1,
.ehf-section h2 {
    margin: 0;
    letter-spacing: -0.055em;
    line-height: 0.92;
}

.ehf-hero h1 {
    font-size: clamp(58px, 10vw, 132px);
}

.ehf-hero-subtitle {
    max-width: 690px;
    margin: 26px auto 0;
    color: rgba(255, 255, 255, 0.72);
    font-size: clamp(18px, 2vw, 24px);
}

.ehf-hero-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 13px;
    margin-top: 34px;
}

.ehf-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 54px;
    padding: 0 24px;
    border-radius: 999px;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 800;
    font-size: 13px;
}

.ehf-button-primary {
    color: #120800;
    background: linear-gradient(135deg, #ffd08a, var(--eh-amber) 52%, #ff5a1f);
    box-shadow: 0 0 40px rgba(255, 140, 0, 0.35);
}

.ehf-limited,
.ehf-scroll-cue {
    color: rgba(255, 255, 255, 0.58);
    font-size: 13px;
}

.ehf-scroll-cue {
    position: absolute;
    bottom: 28px;
    text-decoration: none;
}

.ehf-section {
    position: relative;
    width: min(calc(100% - 40px), var(--eh-max));
    margin: 0 auto;
    padding: 120px 0;
}

.ehf-feature,
.ehf-specs {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(36px, 7vw, 100px);
}

.ehf-section h2 {
    font-size: clamp(40px, 6vw, 82px);
}

.ehf-section p {
    color: rgba(255, 255, 255, 0.72);
    font-size: 18px;
}

.ehf-section-copy p:last-child {
    margin-bottom: 0;
}

.ehf-void-demo {
    position: relative;
    height: 480px;
    display: grid;
    place-items: center;
}

.ehf-light-beam {
    position: absolute;
    width: 54%;
    height: 130px;
    left: 0;
    top: 36%;
    transform: rotate(-18deg);
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.18), transparent);
    filter: blur(16px);
    opacity: 0.75;
}

.ehf-demo-sphere {
    position: relative;
    width: min(64vw, 290px);
    aspect-ratio: 1;
    border-radius: 50%;
    background: #000;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.018), 0 50px 80px rgba(0, 0, 0, 0.9);
}

.ehf-spec-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 0;
    margin: 28px 0 0;
    list-style: none;
}

.ehf-spec-tags li {
    padding: 9px 12px;
    border: 1px solid rgba(255, 140, 0, 0.32);
    border-radius: 999px;
    color: var(--eh-gold);
    background: rgba(255, 140, 0, 0.08);
    font-size: 13px;
}

.ehf-macro-ring {
    position: relative;
    min-height: 430px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 34px;
    background:
        radial-gradient(circle at 52% 48%, #000 0 18%, transparent 19%),
        radial-gradient(ellipse at 50% 52%, rgba(255, 211, 145, 0.75) 0 7%, rgba(255, 140, 0, 0.45) 12%, rgba(196, 50, 24, 0.22) 23%, transparent 43%),
        linear-gradient(140deg, #020202, #111015);
    overflow: hidden;
}

.ehf-macro-ring span {
    position: absolute;
    inset: 18%;
    border: 4px solid rgba(255, 211, 145, 0.7);
    border-radius: 50%;
    transform: rotateX(62deg);
    filter: drop-shadow(0 0 32px rgba(255, 140, 0, 0.75));
}

.ehf-gravity {
    width: 100%;
    max-width: none;
    padding: 150px 20px;
    background:
        linear-gradient(rgba(0, 0, 0, 0.28), rgba(0, 0, 0, 0.92)),
        radial-gradient(circle at 50% 30%, rgba(255, 140, 0, 0.16), transparent 32rem);
}

.ehf-gravity-card,
.ehf-preorder-card {
    width: min(900px, 100%);
    margin: 0 auto;
    padding: clamp(34px, 6vw, 70px);
    border: 1px solid rgba(255, 255, 255, 0.11);
    border-radius: 36px;
    text-align: center;
    background: rgba(17, 18, 23, 0.68);
    backdrop-filter: blur(20px);
}

.ehf-metric-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 40px;
}

.ehf-metric-row div {
    padding: 22px 12px;
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.035);
}

.ehf-metric-row strong {
    display: block;
    color: var(--eh-gold);
    font-family: var(--eh-numeric);
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 300;
    letter-spacing: -0.055em;
    line-height: 1;
}

.ehf-metric-row span {
    color: var(--eh-muted);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.ehf-founders {
    text-align: center;
}

.ehf-founders-copy {
    max-width: 820px;
    margin: 0 auto 46px;
}

.ehf-includes-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.ehf-include {
    min-height: 250px;
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 26px;
    text-align: left;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
}

.ehf-include span {
    display: inline-block;
    margin-bottom: 70px;
    color: var(--eh-gold);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 11px;
}

.ehf-include h3 {
    margin: 0 0 12px;
    font-size: 22px;
}

.ehf-include p {
    margin: 0;
    font-size: 15px;
}

.ehf-wireframe {
    position: relative;
    min-height: 520px;
    border-radius: 34px;
    background:
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        radial-gradient(circle at 50% 40%, rgba(255, 140, 0, 0.16), transparent 40%),
        #050505;
    background-size: 34px 34px, 34px 34px, auto, auto;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.ehf-wire-sphere,
.ehf-wire-disc,
.ehf-wire-base {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.ehf-wire-sphere {
    top: 118px;
    width: 170px;
    aspect-ratio: 1;
    border: 1px solid rgba(255, 255, 255, 0.42);
    border-radius: 50%;
    box-shadow: inset 0 0 0 1px rgba(255, 140, 0, 0.25);
}

.ehf-wire-disc {
    top: 191px;
    width: 320px;
    height: 68px;
    border: 1px solid rgba(255, 140, 0, 0.78);
    border-radius: 50%;
}

.ehf-wire-base {
    top: 332px;
    width: 360px;
    height: 90px;
    border: 1px solid rgba(255, 255, 255, 0.32);
    border-radius: 50%;
}

.ehf-wire-note {
    position: absolute;
    padding: 7px 9px;
    color: rgba(255, 255, 255, 0.68);
    border: 1px solid rgba(255, 255, 255, 0.11);
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.5);
    font-size: 12px;
}

.ehf-wire-note-a {
    left: 54%;
    top: 90px;
}

.ehf-wire-note-b {
    left: 12%;
    top: 286px;
}

.ehf-wire-note-c {
    right: 10%;
    bottom: 72px;
}

.ehf-spec-list {
    margin: 32px 0;
}

.ehf-spec-list div {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 20px;
    padding: 18px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.ehf-spec-list dt {
    color: var(--eh-muted);
    text-transform: uppercase;
    letter-spacing: 0.11em;
    font-size: 12px;
}

.ehf-spec-list dd {
    margin: 0;
    color: var(--eh-text);
}

.ehf-warning {
    padding: 18px;
    border: 1px solid rgba(255, 140, 0, 0.3);
    border-radius: 18px;
    color: rgba(255, 231, 201, 0.9);
    background: rgba(255, 140, 0, 0.07);
}

.ehf-faq {
    max-width: 900px;
}

.ehf-faq-heading {
    text-align: center;
    margin-bottom: 36px;
}

.ehf-faq-list {
    display: grid;
    gap: 12px;
}

.ehf-faq details {
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.04);
}

.ehf-faq summary {
    cursor: pointer;
    padding: 22px 24px;
    list-style: none;
    font-size: 18px;
    font-weight: 700;
}

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

.ehf-faq summary::after {
    content: "+";
    float: right;
    color: var(--eh-amber);
}

.ehf-faq details[open] summary::after {
    content: "-";
}

.ehf-faq details p {
    padding: 0 24px 22px;
    margin: 0;
    font-size: 16px;
}

.ehf-preorder {
    max-width: 980px;
    padding-top: 40px;
}

.ehf-footer {
    width: min(calc(100% - 40px), var(--eh-max));
    margin: 0 auto;
    padding: 64px 0 40px;
    color: rgba(255, 255, 255, 0.54);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 13px;
}

.ehf-footer nav {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin-bottom: 20px;
}

.ehf-footer a {
    color: rgba(255, 255, 255, 0.76);
}

.ehf-prop65 {
    max-width: 900px;
}

.ehf-reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 900ms cubic-bezier(0.2, 0.8, 0.2, 1), transform 900ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.ehf-reveal.is-visible {
    opacity: 1;
    transform: none;
}

@keyframes ehf-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

@keyframes ehf-disc {
    to {
        filter: hue-rotate(8deg) blur(0.2px) drop-shadow(0 0 24px rgba(255, 140, 0, 0.68));
    }
}

@media (max-width: 900px) {
    .ehf-nav-links a:not(.ehf-nav-cta) {
        display: none;
    }

    .ehf-feature,
    .ehf-specs {
        grid-template-columns: 1fr;
    }

    .ehf-feature-ring .ehf-section-copy {
        order: 2;
    }

    .ehf-feature-ring .ehf-section-visual {
        order: 1;
    }

    .ehf-includes-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .ehf-metric-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 620px) {
    .ehf-nav {
        top: 10px;
        height: 54px;
        padding: 0 12px;
    }

    .ehf-brand {
        letter-spacing: 0.13em;
    }

    .ehf-hero {
        padding-top: 108px;
    }

    .ehf-singularity {
        width: 360px;
    }

    .ehf-void-sphere {
        width: 124px;
    }

    .ehf-accretion-disc {
        width: 308px;
        height: 86px;
    }

    .ehf-photon-ring {
        width: 226px;
        height: 164px;
    }

    .ehf-section {
        padding: 84px 0;
    }

    .ehf-includes-grid {
        grid-template-columns: 1fr;
    }

    .ehf-spec-list div {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .ehf-wireframe {
        min-height: 420px;
    }

    .ehf-wire-disc {
        width: 260px;
    }

    .ehf-wire-base {
        width: 290px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 1ms !important;
    }
}