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

:root {
    --sky-bg: #050814;
    --sky-bg-soft: #0b1730;
    --sky-bg-deep: #03050d;
    --sky-panel: rgba(12, 20, 42, 0.62);
    --sky-panel-strong: rgba(18, 28, 58, 0.88);
    --sky-text: #edf4ff;
    --sky-muted: #9fb6d4;
    --sky-blue: #5d8cff;
    --sky-cyan: #54e7ff;
    --sky-purple: #935bff;
    --sky-amber: #ffb347;
    --sky-orange: #ff8a4c;
    --sky-border: rgba(148, 189, 255, 0.18);
    --sky-border-strong: rgba(84, 231, 255, 0.24);
    --sky-shadow: 0 30px 80px rgba(3, 8, 24, 0.45);
    --sky-radius: 28px;
    --sky-max: 1240px;
    --sky-tutorial-nav: 17.5rem;
}

#sky-mode-page {
    position: relative;
    overflow-x: clip;
    color: var(--sky-text);
    background:
        radial-gradient(circle at top left, rgba(84, 231, 255, 0.14), transparent 32%),
        radial-gradient(circle at 82% 8%, rgba(255, 179, 71, 0.12), transparent 26%),
        radial-gradient(circle at top right, rgba(147, 91, 255, 0.16), transparent 28%),
        linear-gradient(180deg, #040712 0%, #07101f 45%, #03050d 100%);
    isolation: isolate;
}

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

#sky-mode-page::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 120px 120px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0));
    z-index: -2;
}

.sky-grid,
.sky-aurora {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.sky-grid {
    opacity: 0.64;
    background-image:
        radial-gradient(circle at 12% 18%, rgba(255, 255, 255, 0.75) 0 1px, transparent 1.4px),
        radial-gradient(circle at 20% 78%, rgba(255, 255, 255, 0.7) 0 1px, transparent 1.4px),
        radial-gradient(circle at 36% 28%, rgba(84, 231, 255, 0.82) 0 1.2px, transparent 1.8px),
        radial-gradient(circle at 52% 54%, rgba(255, 255, 255, 0.72) 0 1px, transparent 1.4px),
        radial-gradient(circle at 66% 18%, rgba(255, 179, 71, 0.8) 0 1.2px, transparent 1.8px),
        radial-gradient(circle at 82% 42%, rgba(84, 231, 255, 0.78) 0 1.1px, transparent 1.7px),
        radial-gradient(circle at 90% 72%, rgba(255, 255, 255, 0.7) 0 1px, transparent 1.4px);
    animation: sky-twinkle 10s linear infinite alternate;
    z-index: -1;
}

.sky-aurora {
    filter: blur(34px);
    opacity: 0.56;
    z-index: -1;
}

.sky-aurora-one {
    inset: 8% auto auto -10%;
    width: min(54vw, 700px);
    height: min(54vw, 700px);
    border-radius: 999px;
    background: radial-gradient(circle, rgba(84, 231, 255, 0.18), transparent 68%);
}

.sky-aurora-two {
    inset: auto -8% 18% auto;
    width: min(48vw, 620px);
    height: min(48vw, 620px);
    border-radius: 999px;
    background: radial-gradient(circle, rgba(255, 138, 76, 0.14), transparent 68%);
}

.sky-section {
    position: relative;
    padding: clamp(5rem, 8vw, 8rem) 1.5rem;
    scroll-margin-top: 1.25rem;
}

.sky-hero {
    padding-top: clamp(4.75rem, 8vw, 7rem);
    padding-bottom: clamp(3rem, 5vw, 4.25rem);
}

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

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

#sky-mode-page h1,
#sky-mode-page h2,
#sky-mode-page h3,
#sky-mode-page h4 {
    font-family: "Manrope", "Segoe UI", sans-serif;
    letter-spacing: -0.03em;
    text-wrap: balance;
}

#sky-mode-page p,
#sky-mode-page li,
#sky-mode-page a,
#sky-mode-page span,
#sky-mode-page strong,
#sky-mode-page button {
    font-family: "Manrope", "Segoe UI", sans-serif;
}

#sky-mode-page h1 {
    margin-bottom: 1.4rem;
    font-size: clamp(3rem, 6vw, 5.5rem);
    line-height: 0.96;
}

#sky-mode-page h2 {
    margin-bottom: 1.2rem;
    font-size: clamp(2.2rem, 4.5vw, 4.1rem);
    line-height: 1;
}

#sky-mode-page h3 {
    margin-bottom: 0.75rem;
    font-size: clamp(1.3rem, 2vw, 1.8rem);
    line-height: 1.08;
}

#sky-mode-page h4 {
    margin-bottom: 0.55rem;
    font-size: clamp(1.05rem, 1.4vw, 1.25rem);
    line-height: 1.2;
}

#sky-mode-page p {
    color: var(--sky-muted);
    font-size: clamp(1rem, 1.2vw, 1.12rem);
    line-height: 1.75;
}

.sky-eyebrow,
.sky-card-kicker,
.sky-step-index,
.sky-tutorial-num {
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

.sky-eyebrow {
    margin-bottom: 1rem;
    color: var(--sky-cyan);
    font-size: 0.84rem;
    font-weight: 800;
}

.sky-card-kicker,
.sky-step-index,
.sky-tutorial-num {
    color: rgba(237, 244, 255, 0.76);
    font-size: 0.76rem;
    font-weight: 800;
}

.sky-hero-grid,
.sky-split-grid,
.sky-why-grid,
.sky-media-copy {
    display: grid;
    gap: clamp(2rem, 4vw, 4rem);
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
}

.sky-intro {
    max-width: 46rem;
}

.sky-button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.sky-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3.5rem;
    min-width: 11.5rem;
    padding: 0.95rem 1.45rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 189, 255, 0.22);
    color: var(--sky-text);
    font-size: 0.96rem;
    font-weight: 700;
    line-height: 1;
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.sky-button:hover,
.sky-button:focus-visible {
    transform: translateY(-2px);
    border-color: rgba(84, 231, 255, 0.42);
    box-shadow: 0 14px 40px rgba(7, 17, 42, 0.35);
}

.sky-button-primary {
    background: linear-gradient(135deg, rgba(93, 140, 255, 0.95), rgba(84, 231, 255, 0.92));
    color: #04111f;
}

.sky-button-secondary {
    background: rgba(11, 20, 40, 0.5);
    backdrop-filter: blur(16px);
}

.sky-visual-card,
.sky-band-inner,
.sky-band-card,
.sky-info-panel,
.sky-cap-card,
.sky-unique,
.sky-media-card,
.sky-step-card,
.sky-lesson,
.sky-callout,
.sky-setting,
.sky-faq,
.sky-cta,
.sky-toc {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--sky-border);
    border-radius: var(--sky-radius);
    background: linear-gradient(180deg, rgba(14, 23, 46, 0.82), rgba(10, 18, 34, 0.54));
    box-shadow: var(--sky-shadow);
    backdrop-filter: blur(18px);
}

.sky-visual-card::after,
.sky-band-card::after,
.sky-info-panel::after,
.sky-cap-card::after,
.sky-unique::after,
.sky-media-card::after,
.sky-step-card::after,
.sky-lesson::after,
.sky-callout::after,
.sky-setting::after,
.sky-faq::after,
.sky-cta::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        linear-gradient(90deg, rgba(84, 231, 255, 0.22), rgba(255, 179, 71, 0.12) 42%, rgba(147, 91, 255, 0) 78%) top / 100% 1px no-repeat,
        linear-gradient(135deg, rgba(255, 255, 255, 0.03), transparent 32%),
        radial-gradient(circle at 16% 12%, rgba(84, 231, 255, 0.06), transparent 32%);
    pointer-events: none;
}

.sky-hero-visual {
    display: grid;
    gap: 1rem;
}

.sky-visual-card {
    padding: 1rem;
}

.sky-visual-card img,
.sky-media-card img,
.sky-lesson-media img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: calc(var(--sky-radius) - 12px);
}

.sky-media-card:has(img.sky-media-fit) {
    min-height: 0;
}

.sky-media-card img.sky-media-fit {
    height: auto;
    min-height: 0;
    object-fit: contain;
    background: #050814;
}

.sky-visual-card-main img {
    aspect-ratio: 16 / 10;
}

.sky-card-kicker-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.85rem;
}

.sky-card-chip {
    padding: 0.45rem 0.7rem;
    border-radius: 999px;
    background: rgba(255, 179, 71, 0.12);
    color: var(--sky-amber);
    font-size: 0.76rem;
    font-weight: 800;
}

.sky-metric-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
}

.sky-metric-list div {
    padding: 0.95rem 1rem;
    border-radius: 18px;
    border: 1px solid rgba(148, 189, 255, 0.12);
    background: linear-gradient(180deg, rgba(12, 20, 41, 0.74), rgba(8, 14, 31, 0.58));
}

.sky-metric-list span {
    display: block;
    margin-bottom: 0.38rem;
    color: rgba(237, 244, 255, 0.78);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.sky-metric-list strong {
    color: var(--sky-text);
    font-size: 1rem;
    line-height: 1.45;
}

.sky-band {
    padding: 0 1.5rem;
}

.sky-band-inner,
.sky-unique {
    padding: clamp(2.4rem, 4vw, 3.2rem);
}

.sky-band-copy,
.sky-section-heading {
    max-width: 52rem;
}

.sky-section-heading {
    margin-bottom: clamp(2rem, 4vw, 3rem);
}

.sky-band-copy {
    margin: 0 auto clamp(2rem, 4vw, 2.8rem);
    text-align: center;
}

.sky-band-title {
    margin: 0 0 1rem;
    font-size: clamp(1.7rem, 3vw, 2.65rem);
    line-height: 1.02;
}

.sky-band-intro {
    max-width: 46rem;
    margin: 0 auto 1.1rem;
}

.sky-emphasis {
    max-width: 40rem;
    margin: 0 auto;
    color: var(--sky-text);
    font-size: clamp(1.15rem, 1.6vw, 1.4rem);
    font-style: italic;
    font-weight: 600;
    line-height: 1.55;
}

.sky-use-grid {
    display: grid;
    gap: 1.15rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sky-line-block {
    display: block;
}

.sky-anatomy-grid,
.sky-cap-grid,
.sky-axis-grid {
    display: grid;
    gap: 1.15rem;
}

.sky-anatomy-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sky-band-card,
.sky-info-panel,
.sky-cap-card,
.sky-step-card,
.sky-setting,
.sky-faq {
    padding: 1.5rem;
}

.sky-band-card span,
.sky-cap-card h3 {
    display: block;
    margin-bottom: 0.85rem;
    color: var(--sky-text);
    font-size: clamp(1.22rem, 1.6vw, 1.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.sky-band-card p,
.sky-cap-card p,
.sky-step-card p,
.sky-faq p {
    margin-bottom: 0;
}

.sky-band-card-featured,
.sky-cap-card-featured,
.sky-unique {
    border-color: rgba(255, 179, 71, 0.26);
    background:
        radial-gradient(circle at top right, rgba(255, 179, 71, 0.14), transparent 34%),
        radial-gradient(circle at 20% 18%, rgba(84, 231, 255, 0.08), transparent 30%),
        linear-gradient(160deg, rgba(24, 22, 42, 0.98), rgba(8, 18, 36, 0.95));
}

.sky-sequence {
    display: grid;
    gap: 0.7rem;
    margin: 1.4rem 0 0;
    padding: 0;
    list-style: none;
}

.sky-sequence li {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.85rem;
    align-items: start;
    color: var(--sky-text);
    font-size: 1rem;
    line-height: 1.55;
}

.sky-sequence strong {
    color: var(--sky-cyan);
    min-width: 7.2rem;
}

.sky-cap-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sky-cap-card {
    min-height: 16.5rem;
}

.sky-cap-icon {
    display: inline-flex;
    margin-bottom: 1rem;
    color: var(--sky-amber);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.sky-unique {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: center;
}

.sky-unique-aside {
    display: grid;
    gap: 0.75rem;
}

.sky-unique-aside div {
    padding: 1rem 1.1rem;
    border-radius: 18px;
    border: 1px solid rgba(148, 189, 255, 0.12);
    background: rgba(8, 14, 31, 0.5);
}

.sky-unique-aside span {
    display: block;
    margin-bottom: 0.3rem;
    color: var(--sky-amber);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.sky-unique-aside strong {
    color: var(--sky-text);
    font-size: 1.05rem;
    line-height: 1.4;
}

.sky-media-card {
    padding: 1rem;
    min-height: 28rem;
}

.sky-media-card img,
.sky-lesson-media {
    min-height: 24rem;
}

.sky-inline-list {
    display: grid;
    gap: 0.55rem;
    margin: 0.9rem 0 0;
    padding-left: 1.25rem;
    color: var(--sky-text);
}

.sky-section-tight {
    padding-top: 0;
}

.sky-tutorial {
    padding-top: clamp(3.5rem, 6vw, 5.5rem);
}

.sky-tutorial-intro {
    max-width: 48rem;
    margin-bottom: clamp(2rem, 3vw, 2.6rem);
}

.sky-tutorial-layout {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: var(--sky-tutorial-nav) minmax(0, 1fr);
    align-items: start;
}

.sky-toc {
    position: sticky;
    top: 1.25rem;
    padding: 1.15rem 1rem;
    max-height: calc(100vh - 2.5rem);
    overflow: auto;
}

.sky-toc p {
    margin-bottom: 0.8rem;
    color: var(--sky-cyan);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.sky-toc a {
    display: block;
    padding: 0.48rem 0.7rem;
    border-radius: 12px;
    color: rgba(237, 244, 255, 0.78);
    font-size: 0.88rem;
    font-weight: 600;
    line-height: 1.35;
    text-decoration: none;
}

.sky-toc a:hover,
.sky-toc a.is-active {
    background: rgba(84, 231, 255, 0.1);
    color: var(--sky-text);
}

.sky-lessons {
    display: grid;
    gap: 1.15rem;
}

.sky-lesson {
    padding: clamp(1.4rem, 2.4vw, 2rem);
    scroll-margin-top: 1.25rem;
}

.sky-lesson-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.8rem 1.1rem;
    margin-bottom: 1rem;
}

.sky-tutorial-num {
    color: var(--sky-cyan);
}

.sky-lesson h3 {
    margin-bottom: 0;
}

.sky-lesson-grid {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
}

.sky-lesson-grid-wide {
    grid-template-columns: 1fr;
}

.sky-lesson-media {
    border-radius: calc(var(--sky-radius) - 12px);
    overflow: hidden;
    min-height: 18rem;
}

.sky-do-list,
.sky-note-list {
    display: grid;
    gap: 0.65rem;
    margin: 1rem 0 0;
    padding: 0;
    list-style: none;
}

.sky-do-list li,
.sky-note-list li {
    position: relative;
    padding-left: 1.15rem;
    color: var(--sky-text);
    line-height: 1.6;
}

.sky-do-list li::before,
.sky-note-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.62rem;
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 999px;
    background: var(--sky-cyan);
}

.sky-callout {
    margin-top: 1.15rem;
    padding: 1.1rem 1.2rem;
}

.sky-callout strong {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--sky-amber);
}

.sky-callout p {
    margin-bottom: 0;
    color: rgba(228, 237, 249, 0.9);
}

.sky-key-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.sky-key {
    display: inline-flex;
    align-items: center;
    min-height: 2rem;
    padding: 0.3rem 0.65rem;
    border-radius: 10px;
    border: 1px solid rgba(148, 189, 255, 0.18);
    background: rgba(8, 14, 31, 0.7);
    color: var(--sky-text);
    font-size: 0.82rem;
    font-weight: 700;
}

.sky-axis-grid {
    grid-template-columns: 1fr 1fr;
    margin-top: 1rem;
}

.sky-axis-grid article {
    padding: 1rem 1.1rem;
    border-radius: 18px;
    border: 1px solid rgba(148, 189, 255, 0.12);
    background: rgba(8, 14, 31, 0.46);
}

.sky-axis-grid span {
    display: block;
    margin-bottom: 0.45rem;
    color: var(--sky-cyan);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.sky-settings-grid,
.sky-faq-grid {
    display: grid;
    gap: 1rem;
}

.sky-settings-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sky-faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sky-setting h4,
.sky-faq h4 {
    color: var(--sky-text);
}

.sky-cta {
    display: grid;
    gap: 2rem;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: clamp(2rem, 3vw, 2.6rem);
    border-color: var(--sky-border-strong);
    background:
        radial-gradient(circle at top right, rgba(84, 231, 255, 0.12), transparent 36%),
        radial-gradient(circle at 78% 0%, rgba(255, 179, 71, 0.1), transparent 32%),
        linear-gradient(160deg, rgba(14, 29, 58, 0.98), rgba(8, 18, 36, 0.94));
}

.sky-cta-copy {
    max-width: 44rem;
    margin-bottom: 0.9rem;
}

.sky-cta-note {
    margin-bottom: 0;
    color: rgba(228, 237, 249, 0.94);
}

.sky-hero .sky-reveal {
    opacity: 1;
    transform: none;
}

.sky-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 720ms ease, transform 720ms ease;
}

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

@keyframes sky-twinkle {
    0% {
        transform: translateY(0);
        opacity: 0.46;
    }

    100% {
        transform: translateY(-10px);
        opacity: 0.7;
    }
}

@media (max-width: 1100px) {
    .sky-hero-grid,
    .sky-split-grid,
    .sky-why-grid,
    .sky-media-copy,
    .sky-unique,
    .sky-tutorial-layout,
    .sky-lesson-grid,
    .sky-cta {
        grid-template-columns: 1fr;
    }

    .sky-toc {
        position: relative;
        top: 0;
        max-height: none;
    }

    .sky-anatomy-grid,
    .sky-cap-grid,
    .sky-use-grid,
    .sky-axis-grid,
    .sky-settings-grid,
    .sky-faq-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sky-media-card,
    .sky-media-card img,
    .sky-lesson-media {
        min-height: 20rem;
    }
}

@media (max-width: 760px) {
    .sky-section,
    .sky-band {
        padding-inline: 1rem;
    }

    .sky-metric-list,
    .sky-anatomy-grid,
    .sky-cap-grid,
    .sky-use-grid,
    .sky-axis-grid,
    .sky-settings-grid,
    .sky-faq-grid {
        grid-template-columns: 1fr;
    }

    #sky-mode-page h1 {
        font-size: clamp(2.6rem, 12vw, 3.8rem);
    }

    #sky-mode-page h2 {
        font-size: clamp(1.9rem, 8.5vw, 2.8rem);
    }

    .sky-cta {
        justify-items: start;
    }
}