@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap");

:root {
    --ca-text: #edf4ff;
    --ca-muted: #a5b9d3;
    --ca-cyan: #5ce7f2;
    --ca-border: rgba(148, 189, 255, 0.18);
    --ca-max: 1240px;
    --ca-reading: #f5f4ef;
    --ca-reading-text: #152135;
    --ca-reading-muted: #536175;
    --ca-reading-rule: #d8dde3;
    --ca-reading-blue: #315dc5;
    --ca-reading-cyan: #087f8d;
    --ca-toc-width: 15rem;
}

#ca-page {
    position: relative;
    overflow-x: clip;
    color: var(--ca-text);
    background:
        radial-gradient(circle at top left, rgba(92, 231, 242, 0.15), transparent 30%),
        radial-gradient(circle at 88% 4%, rgba(162, 113, 255, 0.17), transparent 26%),
        linear-gradient(180deg, #040712 0%, #07101f 40%, #03050d 100%);
    isolation: isolate;
}

#ca-page,
#ca-page * {
    box-sizing: border-box;
}

#ca-page h1,
#ca-page h2,
#ca-page h3,
#ca-page h4,
#ca-page p {
    margin-top: 0;
}

#ca-page h1,
#ca-page h2,
#ca-page h3,
#ca-page h4 {
    font-family: "Manrope", "Segoe UI", sans-serif;
    letter-spacing: -0.035em;
    text-wrap: balance;
}

#ca-page p,
#ca-page li,
#ca-page a,
#ca-page span,
#ca-page strong,
#ca-page dt,
#ca-page dd,
#ca-page figcaption {
    font-family: "Manrope", "Segoe UI", sans-serif;
}

#ca-page code {
    font-family: "Space Grotesk", Consolas, monospace;
    font-size: 0.92em;
}

.ca-stars {
    position: absolute;
    inset: 0 0 auto;
    z-index: -1;
    height: 60rem;
    pointer-events: none;
    opacity: 0.58;
    background-image:
        radial-gradient(circle at 10% 16%, rgba(255, 255, 255, 0.75) 0 1px, transparent 1.4px),
        radial-gradient(circle at 19% 72%, rgba(255, 255, 255, 0.68) 0 1px, transparent 1.4px),
        radial-gradient(circle at 34% 31%, rgba(92, 231, 242, 0.82) 0 1.2px, transparent 1.8px),
        radial-gradient(circle at 51% 58%, rgba(255, 255, 255, 0.72) 0 1px, transparent 1.4px),
        radial-gradient(circle at 69% 19%, rgba(162, 113, 255, 0.77) 0 1.2px, transparent 1.8px),
        radial-gradient(circle at 83% 43%, rgba(92, 231, 242, 0.8) 0 1.1px, transparent 1.7px),
        radial-gradient(circle at 92% 76%, rgba(255, 255, 255, 0.68) 0 1px, transparent 1.4px);
}

.ca-shell {
    width: min(100%, var(--ca-max));
    margin: 0 auto;
}

/* Hero */
.ca-hero {
    padding: clamp(6.75rem, 10vw, 9rem) 1.5rem clamp(4rem, 7vw, 6rem);
}

.ca-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.15fr);
    gap: clamp(2.3rem, 5vw, 4.5rem);
    align-items: center;
}

.ca-eyebrow {
    margin-bottom: 1rem;
    color: var(--ca-cyan);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

#ca-page h1 {
    margin-bottom: 1.35rem;
    font-size: clamp(3rem, 5.6vw, 5.4rem);
    line-height: 0.96;
}

.ca-intro {
    max-width: 38rem;
    color: var(--ca-muted);
    font-size: clamp(1.08rem, 1.45vw, 1.24rem);
    line-height: 1.7;
}

.ca-button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-top: 2rem;
}

.ca-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 12rem;
    min-height: 3.35rem;
    padding: 0.9rem 1.4rem;
    border: 1px solid rgba(148, 189, 255, 0.24);
    border-radius: 999px;
    color: var(--ca-text);
    font-size: 0.94rem;
    font-weight: 800;
    line-height: 1;
    text-decoration: none;
    transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.ca-button:hover,
.ca-button:focus-visible {
    transform: translateY(-2px);
    border-color: rgba(92, 231, 242, 0.55);
    box-shadow: 0 16px 42px rgba(2, 9, 27, 0.36);
}

.ca-button-primary {
    color: #03121d;
    background: linear-gradient(135deg, #7898ff, #5ce7f2);
}

.ca-hero-note {
    margin: 1.1rem 0 0;
    color: rgba(237, 244, 255, 0.62);
    font-size: 0.9rem;
    line-height: 1.6;
}

.ca-hero-note a {
    color: var(--ca-cyan);
    text-underline-offset: 0.18em;
}

.ca-hero-visuals {
    display: grid;
    grid-template-columns: minmax(0, 1.18fr) auto minmax(0, 1.18fr);
    gap: 1rem;
    align-items: center;
}

.ca-visual-card {
    position: relative;
    overflow: hidden;
    height: clamp(18rem, 34vw, 28rem);
    border: 1px solid var(--ca-border);
    border-radius: 28px;
    background: linear-gradient(180deg, rgba(14, 23, 46, 0.82), rgba(10, 18, 34, 0.54));
    box-shadow: 0 30px 80px rgba(3, 8, 24, 0.45);
}

.ca-visual-card img {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ca-visual-card::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    height: 42%;
    background: linear-gradient(180deg, transparent, rgba(4, 9, 20, 0.76));
}

.ca-visual-card-results::after {
    height: 100%;
    background: linear-gradient(180deg, rgba(4, 9, 20, 0.14), rgba(4, 9, 20, 0.74));
}

.ca-visual-results {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: grid;
    grid-template-rows: repeat(3, minmax(0, 1fr));
    gap: 0.8rem;
}

.ca-visual-slice {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(148, 189, 255, 0.16);
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(7, 14, 28, 0.14), rgba(7, 14, 28, 0.38));
}

.ca-visual-slice img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.96;
}

.ca-visual-slice::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(5, 10, 22, 0.04) 0%, rgba(5, 10, 22, 0.06) 58%, rgba(5, 10, 22, 0.36) 100%);
}

.ca-visual-label,
.ca-visual-slice span {
    position: absolute;
    left: 0.85rem;
    bottom: 0.75rem;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    max-width: calc(100% - 1.7rem);
    min-height: 1.65rem;
    padding: 0.32rem 0.58rem;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    background: rgba(7, 14, 28, 0.74);
    box-shadow: 0 10px 24px rgba(2, 7, 20, 0.32);
    color: var(--ca-text);
    font-size: clamp(0.58rem, 0.62vw, 0.68rem);
    font-weight: 800;
    letter-spacing: 0.08em;
    line-height: 1;
    text-transform: uppercase;
    white-space: nowrap;
}

.ca-visual-slice span {
    border-color: rgba(255, 255, 255, 0.16);
    background: rgba(7, 14, 28, 0.56);
    box-shadow: 0 8px 18px rgba(2, 7, 20, 0.24);
    backdrop-filter: blur(10px);
}

.ca-data-flow {
    display: grid;
    justify-items: center;
    gap: 1rem;
    min-width: 7rem;
}

.ca-data-flow-line {
    position: relative;
    display: block;
    width: 100%;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(84, 231, 255, 0), rgba(84, 231, 255, 0.95), rgba(147, 91, 255, 0));
    box-shadow: 0 0 22px rgba(84, 231, 255, 0.65);
}

.ca-data-flow-line::after {
    content: "";
    position: absolute;
    right: -0.2rem;
    top: 50%;
    width: 0.8rem;
    height: 0.8rem;
    border-top: 2px solid rgba(84, 231, 255, 0.92);
    border-right: 2px solid rgba(84, 231, 255, 0.92);
    transform: translateY(-50%) rotate(45deg);
}

.ca-data-flow-text {
    max-width: 8rem;
    color: var(--ca-muted);
    font-size: 0.82rem;
    line-height: 1.4;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

#ca-page a:focus-visible {
    outline: 3px solid rgba(92, 231, 242, 0.68);
    outline-offset: 4px;
}

/* Overview: flat editorial reading surface */
.ca-manual {
    padding: clamp(5rem, 8vw, 7rem) 1.5rem clamp(6rem, 10vw, 9rem);
    color: var(--ca-reading-text);
    background:
        linear-gradient(90deg, rgba(49, 93, 197, 0.035) 1px, transparent 1px),
        var(--ca-reading);
    background-size: 160px 100%;
}

.ca-manual,
.ca-manual * {
    scroll-margin-top: 1.4rem;
}

#ca-page .ca-manual h2,
#ca-page .ca-manual h3,
#ca-page .ca-manual h4 {
    color: var(--ca-reading-text);
}

#ca-page .ca-manual h2 {
    margin-bottom: 1rem;
    font-size: clamp(2.3rem, 4.5vw, 4rem);
    line-height: 1;
}

#ca-page .ca-manual h3 {
    font-size: clamp(1.45rem, 2.2vw, 2rem);
    line-height: 1.14;
}

#ca-page .ca-manual h4 {
    margin-bottom: 0.45rem;
    font-size: 1.14rem;
    letter-spacing: -0.015em;
    line-height: 1.3;
}

#ca-page .ca-manual p,
#ca-page .ca-manual li,
#ca-page .ca-manual dd {
    color: var(--ca-reading-muted);
    font-size: 1rem;
    line-height: 1.78;
}

#ca-page .ca-manual strong,
#ca-page .ca-manual dt {
    color: var(--ca-reading-text);
}

.ca-manual a {
    color: var(--ca-reading-blue);
    text-underline-offset: 0.18em;
}

.ca-manual-intro {
    max-width: 50rem;
    margin-bottom: clamp(3rem, 5vw, 4.5rem);
}

#ca-page .ca-manual-intro > p:last-child {
    margin-bottom: 0;
    font-size: 1.1rem;
}

.ca-kicker {
    margin-bottom: 0.9rem !important;
    color: var(--ca-reading-cyan) !important;
    font-size: 0.76rem !important;
    font-weight: 800;
    letter-spacing: 0.19em;
    text-transform: uppercase;
}

.ca-manual-layout {
    display: grid;
    grid-template-columns: var(--ca-toc-width) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 5rem);
    align-items: start;
}

.ca-manual,
.ca-chapter {
    scroll-margin-top: 5.5rem;
}

.ca-toc {
    position: sticky;
    top: 5.5rem;
    padding: 0.9rem 0;
    border-top: 1px solid var(--ca-reading-rule);
    border-bottom: 1px solid var(--ca-reading-rule);
}

#ca-page .ca-toc p {
    margin: 0 0 0.55rem;
    padding: 0 0.65rem;
    color: var(--ca-reading-cyan);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.17em;
    text-transform: uppercase;
}

.ca-toc a {
    display: block;
    padding: 0.42rem 0.65rem;
    border-left: 2px solid transparent;
    color: #5c6878;
    font-size: 0.86rem;
    font-weight: 650;
    line-height: 1.35;
    text-decoration: none;
    transition: color 160ms ease, border-color 160ms ease, background 160ms ease;
}

.ca-toc a:hover,
.ca-toc a.is-active {
    border-left-color: var(--ca-reading-cyan);
    color: var(--ca-reading-text);
    background: rgba(8, 127, 141, 0.055);
}

.ca-chapters {
    min-width: 0;
    max-width: 52rem;
}

.ca-chapter {
    padding-bottom: clamp(3rem, 5vw, 4.4rem);
    margin-bottom: clamp(3rem, 5vw, 4.4rem);
    border-bottom: 1px solid var(--ca-reading-rule);
}

.ca-chapter-last {
    padding-bottom: 0;
    margin-bottom: 0;
    border-bottom: 0;
}

.ca-chapter-head {
    display: grid;
    grid-template-columns: 2.7rem minmax(0, 1fr);
    gap: 0.9rem;
    align-items: baseline;
    margin-bottom: 1.35rem;
}

.ca-chapter-head > span {
    color: var(--ca-reading-cyan);
    font-family: "Space Grotesk", "Segoe UI", sans-serif !important;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
}

#ca-page .ca-chapter-head h3 {
    margin: 0;
}

#ca-page .ca-emphasis {
    margin: 1.6rem 0 0;
    color: var(--ca-reading-text);
    font-size: 1.14rem;
    font-weight: 600;
}

.ca-definition-list {
    margin: 1.2rem 0 1.6rem;
}

.ca-definition-list > div {
    display: grid;
    grid-template-columns: minmax(10rem, 0.32fr) minmax(0, 0.68fr);
    gap: 1.3rem;
    padding: 0.9rem 0;
    border-top: 1px solid var(--ca-reading-rule);
}

.ca-definition-list > div:last-child {
    border-bottom: 1px solid var(--ca-reading-rule);
}

.ca-definition-list dt {
    font-size: 0.94rem;
    font-weight: 800;
}

#ca-page .ca-definition-list dd {
    margin: 0;
    font-size: 0.96rem;
}

.ca-mode-list {
    border-top: 1px solid var(--ca-reading-rule);
}

.ca-mode {
    padding: 1.6rem 0;
    border-bottom: 1px solid var(--ca-reading-rule);
}

.ca-mode:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

#ca-page .ca-mode p {
    margin-bottom: 0.6rem;
}

#ca-page .ca-mode-needs {
    font-size: 0.94rem;
}

.ca-mode-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.4rem;
    align-items: center;
    margin-top: 0.9rem;
}

.ca-mode-links a {
    font-size: 0.92rem;
    font-weight: 700;
}

.ca-mode-links .ca-mode-link-primary {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 0.95rem;
    border: 1px solid rgba(49, 93, 197, 0.35);
    border-radius: 6px;
    color: var(--ca-reading-blue);
    background: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: background 160ms ease, border-color 160ms ease;
}

.ca-mode-links .ca-mode-link-primary::after {
    content: "\2192";
    margin-left: 0.5rem;
}

.ca-mode-links .ca-mode-link-primary:hover {
    border-color: var(--ca-reading-blue);
    background: #ffffff;
}

.ca-note {
    margin: 1.5rem 0 0;
    padding: 1rem 0 1rem 1.25rem;
    border-left: 3px solid var(--ca-reading-cyan);
}

.ca-note > strong {
    display: block;
    margin-bottom: 0.32rem;
    font-size: 0.9rem;
}

#ca-page .ca-note p {
    margin: 0;
    font-size: 0.95rem;
}

.ca-two-column {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem;
}

.ca-two-column > div {
    padding-top: 1rem;
    border-top: 2px solid var(--ca-reading-rule);
}

.ca-steps {
    display: grid;
    gap: 0.45rem;
    margin: 0.8rem 0 0;
    padding-left: 1.35rem;
}

.ca-steps li::marker {
    color: var(--ca-reading-blue);
    font-weight: 800;
}

#ca-page .ca-small {
    margin: 0.9rem 0 0;
    font-size: 0.9rem;
}

.ca-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 680ms ease, transform 680ms ease;
}

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

@media (max-width: 1080px) {
    .ca-hero-grid,
    .ca-manual-layout {
        grid-template-columns: 1fr;
    }

    .ca-hero-visuals {
        grid-template-columns: 1fr;
        max-width: 52rem;
    }

    .ca-data-flow {
        min-width: auto;
    }

    .ca-data-flow-line {
        width: 2px;
        height: 4rem;
        background: linear-gradient(180deg, rgba(84, 231, 255, 0), rgba(84, 231, 255, 0.95), rgba(147, 91, 255, 0));
    }

    .ca-data-flow-line::after {
        right: 50%;
        top: auto;
        bottom: -0.1rem;
        transform: translateX(50%) rotate(135deg);
    }

    .ca-data-flow-text {
        max-width: none;
    }

    .ca-toc {
        position: relative;
        top: 0;
        columns: 2;
        column-gap: 1rem;
    }

    #ca-page .ca-toc p {
        column-span: all;
    }

    .ca-toc a {
        break-inside: avoid;
    }
}

@media (max-width: 780px) {
    .ca-hero,
    .ca-manual {
        padding-right: 1rem;
        padding-left: 1rem;
    }

    #ca-page h1 {
        font-size: clamp(2.7rem, 13vw, 4.2rem);
    }

    #ca-page .ca-manual h2 {
        font-size: clamp(2rem, 10vw, 3rem);
    }

    .ca-two-column {
        grid-template-columns: 1fr;
    }

    .ca-toc {
        columns: 1;
    }

    .ca-definition-list > div {
        grid-template-columns: 1fr;
        gap: 0.3rem;
    }

    .ca-chapter-head {
        grid-template-columns: 2rem minmax(0, 1fr);
    }
}

@media (max-width: 480px) {
    .ca-button,
    .ca-button-row {
        width: 100%;
    }
}

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

    .ca-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .ca-button,
    .ca-toc a,
    .ca-mode-links .ca-mode-link-primary {
        transition: none;
    }
}