:root {
    --science-night: #031127;
    --science-navy: #071d3c;
    --science-blue: #2b9cff;
    --science-orange: #ff6818;
}

.skip-link {
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 2000;
    padding: 12px 18px;
    background: #ffffff;
    color: var(--navy);
    border-radius: 8px;
    font-weight: 800;
    transform: translateY(-160%);
}

.skip-link:focus {
    transform: translateY(0);
}

.science-hero {
    position: relative;
    overflow: hidden;
    padding: clamp(70px, 9vw, 120px) 0;
    background:
        radial-gradient(circle at 82% 25%, rgba(43, 156, 255, 0.30), transparent 25%),
        radial-gradient(circle at 65% 90%, rgba(255, 104, 24, 0.18), transparent 28%),
        linear-gradient(135deg, var(--science-night), var(--science-navy));
    color: #ffffff;
}

.science-hero::before,
.science-hero::after {
    content: "";
    position: absolute;
    border: 1px solid rgba(43, 156, 255, 0.28);
    border-radius: 50%;
}

.science-hero::before {
    width: 420px;
    height: 420px;
    right: -130px;
    top: -200px;
}

.science-hero::after {
    width: 260px;
    height: 260px;
    right: 105px;
    bottom: -185px;
    border-color: rgba(255, 104, 24, 0.28);
}

.science-hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 60px;
}

.science-hero .eyebrow {
    color: #ff8a3d;
}

.science-hero h1 {
    max-width: 850px;
    margin: 0 0 28px;
    font-size: clamp(54px, 8vw, 108px);
    line-height: 0.88;
    letter-spacing: -0.065em;
}

.science-hero h1 span {
    display: block;
    color: var(--science-blue);
}

.science-hero-intro {
    max-width: 720px;
    margin: 0;
    color: rgba(255, 255, 255, 0.82);
    font-size: clamp(19px, 2.1vw, 25px);
    line-height: 1.55;
}

.science-hero-actions,
.science-cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
}

.button-light {
    background: transparent;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.45);
}

.button-light:hover,
.button-light:focus-visible {
    background: #ffffff;
    color: var(--science-night);
}

.science-mark {
    display: grid;
    gap: 10px;
    font-size: clamp(60px, 8vw, 108px);
    filter: drop-shadow(0 16px 28px rgba(0, 0, 0, 0.28));
    transform: rotate(4deg);
}

.science-mark span:last-child {
    margin-left: 55px;
}

.volume-section {
    padding: clamp(75px, 10vw, 125px) 0;
    background: #020d20;
    color: #ffffff;
}

.volume-wrap {
    max-width: 1120px;
}

.volume-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(240px, 360px);
    align-items: end;
    gap: 40px;
    margin-bottom: 42px;
}

.section-label {
    margin: 0 0 14px;
    color: var(--science-orange);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 0.14em;
}

.volume-heading h2,
.science-intro h2,
.science-actions-card h2,
.science-disclaimer h2 {
    margin: 0;
    color: inherit;
    font-size: clamp(38px, 5.5vw, 68px);
    line-height: 1;
    letter-spacing: -0.045em;
}

.volume-heading > p {
    margin: 0;
    color: rgba(255, 255, 255, 0.68);
    font-size: 18px;
}

.carousel {
    position: relative;
    max-width: 880px;
    margin: 0 auto;
}

.carousel-viewport {
    overflow: hidden;
    border: 1px solid rgba(43, 156, 255, 0.3);
    border-radius: 28px;
    background: #010917;
    box-shadow: 0 35px 90px rgba(0, 0, 0, 0.45);
}

.carousel-track {
    display: flex;
    transition: transform 650ms cubic-bezier(0.22, 1, 0.36, 1);
}

.carousel-slide {
    flex: 0 0 100%;
    margin: 0;
}

.carousel-slide img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: contain;
}

.carousel-arrow {
    position: absolute;
    top: calc(50% - 28px);
    z-index: 2;
    width: 56px;
    height: 56px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 50%;
    background: rgba(3, 17, 39, 0.88);
    color: #ffffff;
    font-size: 25px;
    cursor: pointer;
    backdrop-filter: blur(8px);
}

.carousel-arrow:hover,
.carousel-arrow:focus-visible {
    background: var(--science-orange);
    border-color: var(--science-orange);
}

.carousel-arrow-previous {
    left: -28px;
}

.carousel-arrow-next {
    right: -28px;
}

.carousel-toolbar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 25px;
    margin-top: 28px;
}

.carousel-dots {
    display: flex;
    gap: 10px;
}

.carousel-dots button {
    width: 13px;
    height: 13px;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.32);
    cursor: pointer;
    transition: width 200ms ease, background 200ms ease;
}

.carousel-dots button[aria-current="true"] {
    width: 38px;
    background: var(--science-orange);
}

.carousel-pause {
    min-width: 98px;
    padding: 9px 14px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 999px;
    background: transparent;
    color: #ffffff;
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
}

.carousel-pause:hover,
.carousel-pause:focus-visible {
    border-color: var(--science-blue);
    color: #8acbff;
}

.science-intro {
    padding: clamp(80px, 11vw, 140px) 0;
}

.science-intro-grid {
    display: grid;
    grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
    gap: clamp(50px, 8vw, 110px);
    align-items: start;
}

.science-intro-heading {
    position: sticky;
    top: 130px;
}

.science-intro h2 {
    color: var(--navy);
}

.science-copy {
    max-width: 720px;
}

.science-copy p,
.science-copy li {
    font-size: 18px;
    line-height: 1.8;
}

.science-copy strong {
    color: var(--navy);
}

.science-copy ul {
    display: grid;
    gap: 10px;
    margin: 20px 0 30px;
    padding-left: 25px;
}

.science-copy li::marker {
    color: var(--science-orange);
}

.spicy-signoff {
    margin-top: 42px;
    padding: 28px 30px;
    border-left: 5px solid var(--science-orange);
    border-radius: 0 18px 18px 0;
    background: #ffffff;
    box-shadow: var(--shadow-small);
}

.spicy-signoff p {
    margin: 0;
}

.spicy-signoff p:last-child {
    color: var(--science-orange);
    font-size: 25px;
    font-weight: 900;
}

.science-disclaimer {
    padding: 46px 0;
    background: #eaf4ff;
    border-block: 1px solid #c9def4;
}

.science-disclaimer-inner {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 42px;
    align-items: start;
}

.disclaimer-label {
    margin: 9px 0 0;
    color: var(--science-orange);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.science-disclaimer h2 {
    color: var(--navy);
    font-size: clamp(28px, 3.8vw, 44px);
}

.science-disclaimer h2 + p {
    max-width: 880px;
    margin: 18px 0 0;
    color: #405a76;
    font-size: 17px;
    line-height: 1.7;
}

.science-actions {
    padding: clamp(80px, 10vw, 120px) 0;
}

.science-actions-card {
    padding: clamp(34px, 6vw, 72px);
    border-radius: 30px;
    background: #ffffff;
    box-shadow: var(--shadow-medium);
}

.science-actions-card > div:first-child {
    max-width: 760px;
}

.science-actions-card h2 {
    color: var(--navy);
}

.science-actions-card h2 + p {
    margin: 20px 0 0;
    font-size: 19px;
}

.science-action-links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 42px;
}

.science-action-link {
    position: relative;
    display: grid;
    gap: 5px;
    min-height: 130px;
    padding: 24px 60px 24px 24px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--warm-white);
    color: var(--navy);
    text-decoration: none;
    transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.science-action-link:hover,
.science-action-link:focus-visible {
    transform: translateY(-3px);
    border-color: var(--science-blue);
    box-shadow: var(--shadow-small);
}

.science-action-link.featured {
    background: var(--science-navy);
    color: #ffffff;
    border-color: var(--science-navy);
}

.science-action-link span {
    font-size: 20px;
    font-weight: 900;
}

.science-action-link small {
    color: var(--muted);
    font-size: 15px;
}

.science-action-link.featured small {
    color: rgba(255, 255, 255, 0.72);
}

.science-action-link strong {
    position: absolute;
    right: 24px;
    top: 50%;
    color: var(--science-orange);
    font-size: 26px;
    transform: translateY(-50%);
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

@media (max-width: 900px) {
    .science-mark {
        display: none;
    }

    .science-hero-grid,
    .volume-heading,
    .science-intro-grid {
        grid-template-columns: 1fr;
    }

    .science-intro-heading {
        position: static;
    }

    .science-disclaimer-inner {
        grid-template-columns: 1fr;
        gap: 14px;
    }
}

@media (max-width: 700px) {
    .science-hero {
        padding: 58px 0 66px;
    }

    .science-hero h1 {
        font-size: clamp(50px, 17vw, 76px);
    }

    .science-hero-actions .button,
    .science-cta-row .button {
        width: 100%;
        justify-content: center;
        text-align: center;
    }

    .volume-section {
        padding: 64px 0;
    }

    .volume-heading {
        gap: 18px;
        margin-bottom: 28px;
    }

    .carousel-viewport {
        border-radius: 18px;
    }

    .carousel-arrow {
        top: calc(50% - 42px);
        width: 46px;
        height: 46px;
    }

    .carousel-arrow-previous {
        left: 9px;
    }

    .carousel-arrow-next {
        right: 9px;
    }

    .carousel-toolbar {
        gap: 16px;
    }

    .science-intro {
        padding: 70px 0;
    }

    .science-copy p,
    .science-copy li {
        font-size: 17px;
    }

    .science-action-links {
        grid-template-columns: 1fr;
    }

    .science-actions-card {
        border-radius: 22px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .carousel-track,
    .science-action-link {
        transition: none;
    }
}