@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 {
    --cg-text: #edf4ff;
    --cg-muted: #a5b9d3;
    --cg-cyan: #5ce7f2;
    --cg-border: rgba(148, 189, 255, 0.18);
    --cg-max: 1240px;
    --cg-reading: #f5f4ef;
    --cg-reading-text: #152135;
    --cg-reading-muted: #536175;
    --cg-reading-rule: #d8dde3;
    --cg-reading-blue: #315dc5;
    --cg-reading-cyan: #087f8d;
    --cg-toc-width: 16rem;
}

#cg-page {
    position: relative;
    overflow-x: clip;
    color: var(--cg-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;
}

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

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

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

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

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

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

.cg-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);
}

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

/* Hero */
.cg-hero {
    padding: clamp(4.5rem, 8vw, 7rem) 1.5rem clamp(4rem, 7vw, 5.5rem);
}

.cg-back {
    display: inline-block;
    margin-bottom: 2.2rem;
    color: rgba(237, 244, 255, 0.66);
    font-size: 0.88rem;
    font-weight: 700;
    text-decoration: none;
}

.cg-back:hover {
    color: var(--cg-cyan);
}

.cg-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: clamp(2.3rem, 5vw, 4.5rem);
    align-items: center;
}

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

#cg-page h1 {
    margin-bottom: 1.35rem;
    font-size: clamp(2.9rem, 5.4vw, 5.2rem);
    line-height: 0.98;
}

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

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

.cg-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 11rem;
    min-height: 3.35rem;
    padding: 0.9rem 1.4rem;
    border: 1px solid rgba(148, 189, 255, 0.24);
    border-radius: 999px;
    color: var(--cg-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;
}

.cg-button:hover,
.cg-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);
}

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

.cg-button-secondary {
    background: rgba(10, 19, 39, 0.55);
}

.cg-hero-figure {
    margin: 0;
    padding: 0.8rem;
    border: 1px solid var(--cg-border);
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(15, 25, 50, 0.86), rgba(9, 17, 35, 0.62));
    box-shadow: 0 30px 80px rgba(3, 8, 24, 0.46);
}

.cg-hero-figure img,
.cg-hero-figure video {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 14px;
}

.cg-hero-figure figcaption {
    padding: 0.8rem 0.3rem 0.1rem;
    color: rgba(237, 244, 255, 0.6);
    font-size: 0.84rem;
}

/* About: short explanation between the hero and the tutorial */
.cg-about {
    padding: 0 1.5rem clamp(4.5rem, 8vw, 7rem);
}

.cg-band {
    max-width: 61rem;
    margin: 0 auto clamp(4rem, 7vw, 6rem);
    padding: clamp(2.5rem, 5vw, 4rem);
    border: 1px solid var(--cg-border);
    border-radius: 28px;
    background:
        radial-gradient(circle at top center, rgba(92, 231, 242, 0.09), transparent 36%),
        radial-gradient(circle at 78% 0%, rgba(162, 113, 255, 0.09), transparent 32%),
        linear-gradient(160deg, rgba(12, 21, 44, 0.97), rgba(7, 14, 29, 0.94));
    box-shadow: 0 30px 80px rgba(3, 8, 24, 0.46);
    text-align: center;
}

#cg-page .cg-band h2,
#cg-page .cg-media-copy h2 {
    margin-bottom: 1.1rem;
    font-size: clamp(2rem, 3.4vw, 3.2rem);
    line-height: 1.04;
}

#cg-page .cg-band p,
#cg-page .cg-media-copy p {
    color: var(--cg-muted);
    font-size: clamp(1rem, 1.18vw, 1.1rem);
    line-height: 1.75;
}

#cg-page .cg-band p {
    max-width: 47rem;
    margin-right: auto;
    margin-left: auto;
}

#cg-page .cg-emphasis {
    margin-top: 1.4rem;
    margin-bottom: 0;
    color: var(--cg-text);
    font-size: clamp(1.1rem, 1.5vw, 1.3rem);
    font-style: italic;
    font-weight: 600;
}

.cg-media-copy {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: center;
}

.cg-media-copy .cg-hero-figure {
    max-width: none;
}

#cg-page .cg-media-copy p:last-child {
    margin-bottom: 0;
}

.cg-about .cg-button-row {
    margin-top: 1.6rem;
}

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

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

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

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

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

#cg-page .cg-manual h4 {
    margin: 2rem 0 0.5rem;
    font-size: 1.14rem;
    letter-spacing: -0.015em;
    line-height: 1.3;
}

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

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

#cg-page .cg-manual code {
    padding: 0.08rem 0.32rem;
    border-radius: 4px;
    color: #1f355d;
    background: #e6eaf1;
}

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

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

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

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

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

.cg-toc {
    position: sticky;
    top: 1.25rem;
    max-height: calc(100vh - 2.5rem);
    overflow-y: auto;
    padding: 0.9rem 0;
    border-top: 1px solid var(--cg-reading-rule);
    border-bottom: 1px solid var(--cg-reading-rule);
}

#cg-page .cg-toc p {
    margin: 0 0 0.45rem;
    padding: 0 0.65rem;
    color: var(--cg-reading-cyan);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.17em;
    text-transform: uppercase;
}

#cg-page .cg-toc p:not(:first-child) {
    margin-top: 1.1rem;
}

.cg-toc a {
    display: block;
    padding: 0.36rem 0.65rem;
    border-left: 2px solid transparent;
    color: #5c6878;
    font-size: 0.85rem;
    font-weight: 650;
    line-height: 1.35;
    text-decoration: none;
    transition: color 160ms ease, border-color 160ms ease, background 160ms ease;
}

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

.cg-chapters {
    min-width: 0;
    max-width: 54rem;
}

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

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

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

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

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

/* Part divider between "use the mode" and "reference" */
.cg-part {
    padding: clamp(1rem, 3vw, 2rem) 0 clamp(3rem, 5vw, 4rem);
}

.cg-part::before {
    content: "";
    display: block;
    width: 4rem;
    height: 3px;
    margin-bottom: 1.6rem;
    background: linear-gradient(90deg, var(--cg-reading-blue), var(--cg-reading-cyan));
}

#cg-page .cg-part h3 {
    margin-bottom: 0.6rem;
    font-size: clamp(1.8rem, 3vw, 2.6rem);
}

#cg-page .cg-part p {
    max-width: 44rem;
    margin-bottom: 0;
}

/* Lists */
.cg-capabilities,
.cg-bullets {
    display: grid;
    gap: 0.5rem;
    margin: 1rem 0 1.4rem;
    padding-left: 1.25rem;
}

.cg-capabilities li::marker,
.cg-bullets li::marker {
    color: var(--cg-reading-cyan);
}

.cg-steps {
    display: grid;
    gap: 0.6rem;
    margin: 1rem 0 1.4rem;
    padding-left: 1.5rem;
}

.cg-steps li {
    padding-left: 0.25rem;
}

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

/* Definition tables for controls and settings */
.cg-controls {
    margin: 1.2rem 0 1.6rem;
}

.cg-controls > div {
    display: grid;
    grid-template-columns: minmax(10rem, 0.32fr) minmax(0, 0.68fr);
    gap: 1.3rem;
    padding: 0.85rem 0;
    border-top: 1px solid var(--cg-reading-rule);
}

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

.cg-controls dt {
    font-size: 0.94rem;
    font-weight: 800;
}

#cg-page .cg-controls dd {
    margin: 0;
    font-size: 0.96rem;
}

#cg-page .cg-controls dd p {
    margin: 0.4rem 0 0;
    font-size: 0.94rem;
}

/* Tables for comparisons */
.cg-table-wrap {
    margin: 1.2rem 0 1.6rem;
    overflow-x: auto;
}

.cg-table {
    width: 100%;
    border-collapse: collapse;
}

.cg-table th,
.cg-table td {
    padding: 0.7rem 0.9rem 0.7rem 0;
    border-bottom: 1px solid var(--cg-reading-rule);
    text-align: left;
    vertical-align: top;
}

#cg-page .cg-table th {
    font-size: 0.84rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    border-bottom-width: 2px;
}

#cg-page .cg-table td {
    font-size: 0.94rem;
    line-height: 1.6;
}

/* Notes */
.cg-note {
    margin: 1.5rem 0;
    padding: 0.9rem 0 0.9rem 1.25rem;
    border-left: 3px solid var(--cg-reading-cyan);
}

.cg-note-important {
    border-left-color: var(--cg-reading-blue);
}

.cg-note-warning {
    border-left-color: #b4632a;
}

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

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

#cg-page .cg-note p + p {
    margin-top: 0.5rem;
}

/* Figures */
.cg-figure {
    margin: 1.8rem 0;
}

.cg-figure img,
.cg-figure video {
    display: block;
    width: 100%;
    height: auto;
    border: 1px solid var(--cg-reading-rule);
    border-radius: 8px;
    background: #0b1220;
}

.cg-figure figcaption {
    margin-top: 0.6rem;
    color: var(--cg-reading-muted);
    font-size: 0.88rem;
    line-height: 1.55;
}

/* Keyboard and mouse shortcuts */
.cg-keys {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin: 1rem 0 1.4rem;
    padding: 0;
    list-style: none;
}

#cg-page .cg-keys li {
    padding: 0.5rem 0.72rem;
    border: 1px solid #cbd2da;
    border-radius: 5px;
    color: #415168;
    background: rgba(255, 255, 255, 0.52);
    font-size: 0.86rem;
    font-weight: 600;
    line-height: 1.4;
}

#cg-page kbd {
    padding: 0.05rem 0.38rem;
    border: 1px solid #b9c2cd;
    border-bottom-width: 2px;
    border-radius: 4px;
    color: var(--cg-reading-text);
    background: #ffffff;
    font-size: 0.82em;
    font-weight: 700;
}

.cg-two-column {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem;
    margin: 1.4rem 0;
}

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

#cg-page .cg-two-column h4 {
    margin-top: 0;
}

/* Troubleshooting */
.cg-faq {
    display: grid;
    border-top: 1px solid var(--cg-reading-rule);
}

.cg-faq details {
    border-bottom: 1px solid var(--cg-reading-rule);
}

.cg-faq summary {
    padding: 1rem 2rem 1rem 0;
    color: var(--cg-reading-text);
    font-size: 0.96rem;
    font-weight: 800;
    cursor: pointer;
}

#cg-page .cg-faq details > p,
#cg-page .cg-faq details > ul {
    max-width: 47rem;
    margin: 0 0 1rem;
    font-size: 0.95rem;
}

.cg-next {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.4rem;
    align-items: center;
    margin-top: 1rem;
}

.cg-next a {
    font-size: 0.94rem;
    font-weight: 700;
}

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

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

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

    .cg-hero-figure {
        max-width: 52rem;
    }

    .cg-toc {
        position: relative;
        top: 0;
        max-height: none;
        columns: 2;
        column-gap: 1rem;
    }

    #cg-page .cg-toc p {
        break-after: avoid;
    }

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

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

    .cg-band {
        border-radius: 21px;
    }

    #cg-page h1 {
        font-size: clamp(2.6rem, 12vw, 4rem);
    }

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

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

    .cg-toc {
        columns: 1;
    }

    .cg-controls > div {
        grid-template-columns: 1fr;
        gap: 0.3rem;
    }

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

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

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

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

    .cg-button,
    .cg-toc a {
        transition: none;
    }
}