:root {
    --brain-black: #0a0a0a;
    --brain-panel: #141414;
    --brain-panel-2: #1c1c1c;
    --brain-line: rgba(245, 232, 74, 0.22);
    --brain-yellow: #f5e84a;
    --brain-yellow-soft: #fff27a;
    --brain-text: #ffffff;
    --brain-muted: #9a9a9a;
    --brain-dim: #e8e8e8;
    --brain-max: 1240px;
    --brain-cursor-x: 50%;
    --brain-cursor-y: 20%;
    --brain-serif: "Sora", "Aptos", "Calibri", sans-serif;
    --brain-sans: "Manrope", "Aptos", "Calibri", "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body.second-brain-landing-page {
    background: var(--brain-black);
    color: var(--brain-text);
    font-family: var(--brain-sans);
    min-width: 320px;
}

.brain-site {
    background:
        radial-gradient(circle at var(--brain-cursor-x) var(--brain-cursor-y), rgba(245, 232, 74, 0.18), transparent 25rem),
        radial-gradient(circle at 70% 8%, rgba(245, 232, 74, 0.14), transparent 31rem),
        radial-gradient(circle at 12% 32%, rgba(245, 232, 74, 0.08), transparent 27rem),
        conic-gradient(from 150deg at 78% 24%, rgba(245, 232, 74, 0.12), transparent 28%, rgba(255, 255, 255, 0.045), transparent 62%, rgba(245, 232, 74, 0.08)),
        linear-gradient(180deg, #050505 0%, #0a0a0a 48%, #111 100%);
    background-size: 100% 100%, 100% 100%, 100% 100%, 140% 140%, 100% 100%;
    color: var(--brain-text);
    overflow: hidden;
    animation: brainGradientShift 16s ease-in-out infinite alternate;
}

.brain-hero {
    min-height: 100vh;
    padding: 28px clamp(18px, 4vw, 64px) 96px;
    position: relative;
}

.brain-noise,
.brain-grid,
.brain-orb {
    pointer-events: none;
    position: absolute;
}

[data-parallax] {
    translate: var(--brain-parallax-x, 0) var(--brain-parallax-y, 0);
}

.brain-noise {
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px);
    background-size: 100% 4px;
    mix-blend-mode: soft-light;
    opacity: 0.34;
}

.brain-grid {
    inset: 14% -10% auto auto;
    width: 58vw;
    height: 58vw;
    max-width: 720px;
    max-height: 720px;
    background:
        linear-gradient(var(--brain-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--brain-line) 1px, transparent 1px);
    background-size: 44px 44px;
    border-radius: 50%;
    filter: blur(0.2px);
    mask-image: radial-gradient(circle, #000 0 42%, transparent 72%);
    animation: brainRotate 28s linear infinite;
}

.brain-grid::after {
    background: conic-gradient(from 90deg, transparent, rgba(245, 232, 74, 0.45), transparent 34%, rgba(255, 255, 255, 0.16), transparent 64%);
    border-radius: inherit;
    content: "";
    inset: 17%;
    mix-blend-mode: screen;
    position: absolute;
    animation: brainRotate 12s linear infinite reverse;
}

.brain-orb-one {
    right: 10%;
    top: 23%;
    width: 220px;
    height: 220px;
    border-radius: 999px;
    background: rgba(245, 232, 74, 0.22);
    filter: blur(54px);
    animation: brainFloat 8s ease-in-out infinite;
}

.brain-orb-two {
    bottom: 6%;
    left: 8%;
    width: 280px;
    height: 280px;
    border-radius: 999px;
    background: rgba(245, 232, 74, 0.12);
    filter: blur(70px);
    animation: brainFloat 10s ease-in-out infinite reverse;
}

.brain-aurora {
    background:
        radial-gradient(circle at 20% 30%, rgba(245, 232, 74, 0.34), transparent 18%),
        radial-gradient(circle at 78% 58%, rgba(255, 255, 255, 0.18), transparent 18%),
        conic-gradient(from 220deg, transparent, rgba(245, 232, 74, 0.28), transparent, rgba(255, 255, 255, 0.08), transparent);
    border-radius: 999px;
    filter: blur(24px);
    height: clamp(380px, 42vw, 680px);
    opacity: 0.62;
    pointer-events: none;
    position: absolute;
    right: -8%;
    top: 12%;
    transform: rotate(-18deg);
    width: clamp(380px, 42vw, 680px);
}

.brain-nav,
.brain-hero-inner,
.brain-section,
.brain-strip {
    margin-inline: auto;
    max-width: var(--brain-max);
    position: relative;
    z-index: 2;
}

.brain-nav {
    align-items: center;
    display: flex;
    justify-content: space-between;
    margin-bottom: clamp(54px, 8vw, 92px);
}

.brain-brand {
    align-items: center;
    color: var(--brain-text);
    display: inline-flex;
    gap: 14px;
    text-decoration: none;
}

.brain-logo {
    align-items: center;
    background: linear-gradient(145deg, rgba(245, 232, 74, 0.2), rgba(255, 255, 255, 0.05));
    backdrop-filter: blur(18px);
    border: 1px solid rgba(245, 232, 74, 0.32);
    border-radius: 24px;
    box-shadow: 0 0 34px rgba(245, 232, 74, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.16);
    display: inline-flex;
    height: 58px;
    justify-content: center;
    overflow: hidden;
    width: 58px;
}

.brain-logo svg {
    height: 44px;
    width: 44px;
}

.brain-brand strong,
.brain-brand small {
    display: block;
    line-height: 1;
}

.brain-brand strong {
    font-size: 1.05rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.brain-brand small {
    color: var(--brain-muted);
    font-size: 0.74rem;
    letter-spacing: 0.14em;
    margin-top: 7px;
    text-transform: uppercase;
}

.brain-nav-cta,
.brain-button {
    align-items: center;
    border-radius: 999px;
    display: inline-flex;
    font-size: 0.82rem;
    font-weight: 600;
    justify-content: center;
    letter-spacing: 0.14em;
    min-height: 48px;
    padding: 0 22px;
    text-decoration: none;
    text-transform: uppercase;
    transition: transform 220ms ease, border-color 220ms ease, background 220ms ease;
}

.brain-nav-cta,
.brain-button-ghost {
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: var(--brain-text);
}

.brain-button-primary {
    background: var(--brain-yellow);
    border: 1px solid var(--brain-yellow);
    box-shadow: 0 0 34px rgba(245, 232, 74, 0.26);
    color: #0a0a0a;
}

.brain-nav-cta:hover,
.brain-button:hover {
    transform: translateY(-3px);
}

.brain-hero-inner {
    align-items: center;
    display: grid;
    gap: clamp(52px, 7vw, 112px);
    grid-template-columns: minmax(0, 0.96fr) minmax(360px, 0.82fr);
}

.brain-eyebrow {
    color: var(--brain-yellow);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    margin: 0 0 20px;
    text-transform: uppercase;
}

.brain-hero h1,
.brain-section h2,
.brain-demo h2 {
    font-family: var(--brain-serif);
    font-weight: 700;
    letter-spacing: -0.032em;
    line-height: 0.96;
    margin: 0;
    text-transform: uppercase;
}

.brain-hero h1 {
    background: linear-gradient(112deg, #fff 0%, #f7f7f0 28%, var(--brain-yellow) 62%, #fff7a1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    filter: drop-shadow(0 0 34px rgba(245, 232, 74, 0.12));
    font-size: clamp(4rem, 7.6vw, 7.75rem);
    max-width: 720px;
}

.brain-lede {
    color: var(--brain-dim);
    font-size: clamp(1.03rem, 1.45vw, 1.22rem);
    line-height: 1.6;
    margin: 30px 0 0;
    max-width: 620px;
}

.brain-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 38px;
}

.brain-hero-stage {
    padding: 24px 84px 96px 0;
    perspective: 1000px;
    position: relative;
}

.brain-ring {
    border: 1px solid rgba(245, 232, 74, 0.26);
    border-radius: 50%;
    inset: 50% auto auto 50%;
    pointer-events: none;
    position: absolute;
    transform: translate(-50%, -50%);
}

.brain-ring-one {
    height: 118%;
    width: 118%;
    animation: brainPulseRing 4.8s ease-in-out infinite;
}

.brain-ring-two {
    height: 146%;
    width: 146%;
    animation: brainPulseRing 6s ease-in-out infinite 900ms;
}

.brain-console {
    background:
        radial-gradient(circle at var(--brain-cursor-x) var(--brain-cursor-y), rgba(245, 232, 74, 0.18), transparent 28%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.025)),
        var(--brain-panel);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(245, 232, 74, 0.24);
    border-radius: 34px;
    box-shadow: 0 32px 90px rgba(0, 0, 0, 0.42), 0 0 100px rgba(245, 232, 74, 0.13), inset 0 1px 0 rgba(255, 255, 255, 0.11);
    clip-path: polygon(0 0, calc(100% - 34px) 0, 100% 34px, 100% 100%, 34px 100%, 0 calc(100% - 34px));
    overflow: hidden;
    padding: 24px;
    position: relative;
    z-index: 1;
    transform: rotateX(3deg) rotateY(-4deg);
}

.brain-console::after {
    background: linear-gradient(180deg, transparent, rgba(245, 232, 74, 0.11), transparent);
    content: "";
    height: 38%;
    left: 0;
    mix-blend-mode: screen;
    position: absolute;
    right: 0;
    top: -40%;
    animation: brainScan 4.2s ease-in-out infinite;
}

.brain-console-top {
    align-items: center;
    display: flex;
    gap: 8px;
}

.brain-console-top span {
    background: var(--brain-yellow);
    border-radius: 50%;
    height: 10px;
    opacity: 0.8;
    width: 10px;
}

.brain-console-top p {
    color: var(--brain-muted);
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    margin: 0 0 0 auto;
}

.brain-wave {
    align-items: center;
    background:
        radial-gradient(circle at 50% 50%, rgba(245, 232, 74, 0.16), transparent 42%),
        #0d0d0d;
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 24px;
    display: flex;
    gap: 9px;
    height: 142px;
    justify-content: center;
    margin: 28px 0;
    overflow: hidden;
}

.brain-wave i {
    animation: brainWave 1.2s ease-in-out infinite;
    background: linear-gradient(180deg, var(--brain-yellow-soft), var(--brain-yellow));
    border-radius: 999px;
    display: block;
    height: 38px;
    width: 8px;
}

.brain-wave i:nth-child(2n) {
    animation-delay: 120ms;
    height: 72px;
}

.brain-wave i:nth-child(3n) {
    animation-delay: 240ms;
    height: 96px;
}

.brain-dialog {
    display: grid;
    gap: 14px;
}

.brain-dialog p {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.072), rgba(255, 255, 255, 0.025));
    backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.075);
    border-radius: 18px;
    margin: 0;
    padding: 15px 16px;
}

.brain-dialog b {
    color: var(--brain-yellow);
    display: block;
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    margin-bottom: 7px;
    text-transform: uppercase;
}

.brain-dialog span {
    color: var(--brain-dim);
    line-height: 1.45;
}

.brain-dialog-answer {
    box-shadow: inset 3px 0 0 var(--brain-yellow);
}

.brain-status-card {
    background: var(--brain-yellow);
    border-radius: 24px;
    bottom: 8px;
    box-shadow: 0 24px 58px rgba(245, 232, 74, 0.24);
    color: #0a0a0a;
    padding: 20px 22px;
    position: absolute;
    right: -42px;
    width: min(228px, 54%);
    z-index: 2;
}

.brain-status-card strong {
    display: block;
    font-family: var(--brain-serif);
    font-size: 3.6rem;
    font-weight: 400;
    letter-spacing: -0.08em;
    line-height: 0.9;
}

.brain-status-card span {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    margin-top: 10px;
    text-transform: uppercase;
}

.brain-strip {
    background: linear-gradient(90deg, transparent, rgba(245, 232, 74, 0.08), transparent);
    border-block: 1px solid rgba(245, 232, 74, 0.18);
    max-width: none;
    overflow: hidden;
    padding: 19px 0;
}

.brain-marquee {
    animation: brainMarquee 26s linear infinite;
    display: flex;
    gap: 42px;
    white-space: nowrap;
    width: max-content;
}

.brain-marquee span {
    color: var(--brain-yellow);
    font-size: clamp(1.15rem, 2vw, 1.8rem);
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.brain-section {
    padding: clamp(80px, 11vw, 142px) clamp(18px, 4vw, 64px);
    position: relative;
}

.brain-section::before {
    background: radial-gradient(circle, rgba(245, 232, 74, 0.13), transparent 54%);
    content: "";
    filter: blur(28px);
    height: 360px;
    left: -180px;
    pointer-events: none;
    position: absolute;
    top: 12%;
    width: 360px;
}

.brain-section-heading {
    max-width: 780px;
}

.brain-section h2,
.brain-demo h2 {
    font-size: clamp(3.2rem, 7.2vw, 7rem);
    max-width: 900px;
}

.brain-card-grid {
    display: grid;
    gap: 18px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 54px;
}

.brain-card,
.brain-stack div,
.brain-timeline div,
.brain-demo {
    background:
        radial-gradient(circle at var(--brain-cursor-x) var(--brain-cursor-y), rgba(245, 232, 74, 0.13), transparent 30%),
        linear-gradient(150deg, rgba(255, 255, 255, 0.095), rgba(255, 255, 255, 0.02)),
        var(--brain-panel);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(245, 232, 74, 0.14);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.brain-card {
    border-radius: 28px;
    clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
    min-height: 310px;
    padding: 26px;
    position: relative;
    transition: transform 240ms ease, border-color 240ms ease;
}

.brain-card:hover {
    border-color: rgba(245, 232, 74, 0.48);
    box-shadow: 0 20px 80px rgba(245, 232, 74, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.brain-card span,
.brain-timeline span,
.brain-stack b {
    color: var(--brain-yellow);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.18em;
}

.brain-card h3,
.brain-timeline h3 {
    font-family: var(--brain-serif);
    font-size: clamp(1.8rem, 2.7vw, 2.5rem);
    font-weight: 400;
    letter-spacing: -0.05em;
    line-height: 1;
    margin: 80px 0 18px;
}

.brain-card p,
.brain-architecture-copy p,
.brain-timeline p,
.brain-demo p {
    color: var(--brain-muted);
    font-size: 1rem;
    line-height: 1.62;
    margin: 0;
}

.brain-architecture {
    align-items: center;
    display: grid;
    gap: clamp(34px, 6vw, 78px);
    grid-template-columns: 0.88fr 1.12fr;
}

.brain-section-glow {
    background: conic-gradient(from 45deg, transparent, rgba(245, 232, 74, 0.2), transparent, rgba(255, 255, 255, 0.09), transparent);
    border-radius: 999px;
    filter: blur(22px);
    height: 520px;
    pointer-events: none;
    position: absolute;
    right: -220px;
    top: 6%;
    width: 520px;
}

.brain-architecture-copy p {
    font-size: 1.13rem;
    margin-top: 28px;
    max-width: 620px;
}

.brain-architecture h2 {
    font-size: clamp(3rem, 5.8vw, 5.6rem);
    max-width: 10ch;
}

.brain-stack {
    display: grid;
    gap: 14px;
}

.brain-stack div {
    align-items: start;
    border-radius: 24px;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
    display: grid;
    gap: 16px;
    grid-template-columns: 48px minmax(168px, 0.72fr) minmax(0, 1fr);
    padding: 22px;
}

.brain-stack strong {
    font-family: var(--brain-serif);
    font-size: clamp(1.45rem, 2vw, 1.82rem);
    font-weight: 400;
    letter-spacing: -0.05em;
    line-height: 1.06;
}

.brain-stack span {
    color: var(--brain-muted);
    hyphens: manual;
    line-height: 1.5;
    min-width: 0;
    overflow-wrap: break-word;
    word-break: normal;
}

.brain-roadmap {
    padding-top: 40px;
}

.brain-timeline {
    display: grid;
    gap: 18px;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 56px;
    position: relative;
}

.brain-timeline::before {
    background: linear-gradient(90deg, transparent, var(--brain-yellow), transparent);
    content: "";
    height: 1px;
    left: 6%;
    position: absolute;
    right: 6%;
    top: 42px;
}

.brain-timeline div {
    border-radius: 30px;
    padding: 30px;
    position: relative;
}

.brain-timeline h3 {
    margin-top: 96px;
}

.brain-demo {
    border-radius: 38px;
    clip-path: polygon(0 0, calc(100% - 44px) 0, 100% 44px, 100% 100%, 44px 100%, 0 calc(100% - 44px));
    margin-bottom: 80px;
    overflow: hidden;
    padding: clamp(38px, 7vw, 82px);
    position: relative;
}

.brain-demo::after {
    background: radial-gradient(circle, rgba(245, 232, 74, 0.2), transparent 58%);
    content: "";
    height: 420px;
    position: absolute;
    right: -130px;
    top: -160px;
    width: 420px;
}

.brain-demo p:not(.brain-eyebrow) {
    font-size: 1.15rem;
    margin: 26px 0 34px;
    max-width: 680px;
}

[data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 700ms ease, transform 700ms ease;
}

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

@keyframes brainRotate {
    to {
        transform: rotate(360deg);
    }
}

@keyframes brainFloat {
    0%,
    100% {
        transform: translate3d(0, 0, 0);
    }
    50% {
        transform: translate3d(18px, -24px, 0);
    }
}

@keyframes brainWave {
    0%,
    100% {
        transform: scaleY(0.6);
    }
    50% {
        transform: scaleY(1.2);
    }
}

@keyframes brainMarquee {
    to {
        transform: translateX(-50%);
    }
}

@keyframes brainGradientShift {
    0% {
        background-position: 0% 0%, 0% 0%, 0% 0%, 0% 42%, 0% 0%;
    }
    100% {
        background-position: 0% 0%, 0% 0%, 0% 0%, 100% 58%, 0% 0%;
    }
}

@keyframes brainPulseRing {
    0%,
    100% {
        opacity: 0.18;
        transform: translate(-50%, -50%) scale(0.96);
    }
    50% {
        opacity: 0.58;
        transform: translate(-50%, -50%) scale(1.04);
    }
}

@keyframes brainScan {
    0% {
        top: -45%;
        opacity: 0;
    }
    18%,
    72% {
        opacity: 0.8;
    }
    100% {
        top: 108%;
        opacity: 0;
    }
}

@media (max-width: 980px) {
    .brain-hero-inner,
    .brain-architecture,
    .brain-card-grid,
    .brain-timeline {
        grid-template-columns: 1fr;
    }

    .brain-card {
        min-height: 240px;
    }

    .brain-card h3 {
        margin-top: 52px;
    }

    .brain-stack div {
        grid-template-columns: 44px 1fr;
    }

    .brain-stack span {
        grid-column: 2;
    }
}

@media (max-width: 680px) {
    .brain-hero {
        padding-inline: 16px;
    }

    .brain-nav {
        align-items: flex-start;
        gap: 18px;
        margin-bottom: 58px;
    }

    .brain-nav-cta {
        display: none;
    }

    .brain-hero h1 {
        font-size: clamp(3.3rem, 18vw, 5.4rem);
    }

    .brain-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .brain-console {
        border-radius: 24px;
        padding: 16px;
        transform: none;
    }

    .brain-hero-stage {
        padding: 0;
    }

    .brain-status-card {
        margin-top: 16px;
        position: static;
        width: 100%;
    }

    .brain-section {
        padding-inline: 16px;
    }

    .brain-section h2,
    .brain-demo h2 {
        font-size: clamp(3rem, 15vw, 4.8rem);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.001ms !important;
    }

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