:root {
    --oss-accent: #82a8f3;
    --oss-accent-soft: #aac2f2;
}

.open-source-shell {
    background:
        radial-gradient(circle at 82% 8%, rgb(65 105 185 / 8%), transparent 25rem),
        var(--surface);
}

.oss-label,
.oss-project-meta,
.oss-project-number,
.oss-object-code {
    margin: 0;
    color: var(--oss-accent);
    font-family: "DM Mono", ui-monospace, monospace;
    font-size: clamp(0.67rem, 0.75vw, 0.78rem);
    font-weight: 500;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.oss-hero {
    display: flex;
    min-height: min(40rem, calc(100vh - 8rem));
    align-items: flex-start;
    justify-content: center;
    flex-direction: column;
    padding: clamp(4.5rem, 9vw, 9rem) var(--side);
    border-bottom: 1px solid var(--line);
}

.oss-hero h1 {
    max-width: 11ch;
    margin: clamp(1.5rem, 3vw, 2.4rem) 0 0;
    font-size: clamp(4rem, 9vw, 10rem);
    letter-spacing: -0.07em;
    line-height: 0.84;
}

.oss-hero__lower {
    display: grid;
    width: 100%;
    grid-template-columns: minmax(18rem, 0.8fr) auto;
    gap: 3rem;
    align-items: end;
    margin-top: clamp(3rem, 7vw, 6rem);
    padding-left: min(28vw, 33rem);
}

.oss-hero__lower p {
    max-width: 35rem;
    margin: 0;
    color: #87868b;
    font-size: clamp(1.05rem, 1.6vw, 1.42rem);
    line-height: 1.55;
}

.oss-button {
    display: inline-flex;
    min-height: 3.15rem;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.15rem;
    border-radius: 0.45rem;
    color: #111113;
    background: #efeee9;
    font-size: 0.88rem;
    font-weight: 700;
    text-decoration: none;
    transition: background 160ms ease, transform 160ms ease;
}

.oss-button:hover {
    background: #fff;
    transform: translateY(-2px);
}

.oss-intro {
    display: grid;
    grid-template-columns: minmax(18rem, 0.9fr) minmax(20rem, 1.1fr);
    gap: clamp(3rem, 8vw, 10rem);
    padding: clamp(4.5rem, 8vw, 8rem) var(--side);
    border-bottom: 1px solid var(--line);
}

.oss-intro h2 {
    max-width: 14ch;
    margin: 1.2rem 0 0;
    font-size: clamp(2.5rem, 4.5vw, 4.7rem);
    letter-spacing: -0.055em;
    line-height: 0.98;
}

.oss-intro > p {
    max-width: 39rem;
    margin: 2rem 0 0;
    color: #858489;
    font-size: clamp(1.05rem, 1.55vw, 1.35rem);
    line-height: 1.7;
}

.oss-projects,
.oss-objects {
    padding: clamp(5rem, 9vw, 9rem) var(--side);
    border-bottom: 1px solid var(--line);
}

.oss-section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: clamp(3.5rem, 7vw, 6.5rem);
}

.oss-section-heading h2 {
    max-width: 14ch;
    margin: 1.15rem 0 0;
    font-size: clamp(2.6rem, 5vw, 5rem);
    letter-spacing: -0.055em;
    line-height: 0.95;
}

.oss-section-heading > a {
    color: #858489;
    font-size: 0.88rem;
    font-weight: 600;
    text-decoration: none;
}

.oss-section-heading > a:hover {
    color: var(--ink);
}

.oss-featured-project {
    display: grid;
    grid-template-columns: clamp(4.5rem, 7vw, 7rem) minmax(0, 1fr) auto;
    gap: clamp(1.5rem, 3.5vw, 3.5rem);
    align-items: center;
    padding: clamp(2rem, 4vw, 3.8rem);
    border: 1px solid #303034;
    border-radius: 0.75rem;
    color: inherit;
    background:
        linear-gradient(120deg, rgb(63 100 180 / 13%), transparent 55%),
        #111113;
    text-decoration: none;
    transition: border-color 160ms ease, transform 160ms ease;
}

.oss-featured-project:hover {
    border-color: #55555b;
    transform: translateY(-2px);
}

.oss-featured-project__mark {
    display: grid;
    width: clamp(4.5rem, 7vw, 7rem);
    height: clamp(4.5rem, 7vw, 7rem);
    place-items: center;
    border: 1px solid #3b465d;
    border-radius: 1rem;
    color: var(--oss-accent-soft);
    background: #151a24;
    font-family: "DM Mono", ui-monospace, monospace;
    font-size: clamp(1.8rem, 3vw, 3rem);
}

.oss-featured-project h3 {
    margin: 0.65rem 0 0.55rem;
    font-size: clamp(2rem, 3.5vw, 3.6rem);
    letter-spacing: -0.045em;
}

.oss-featured-project p:last-child {
    max-width: 47rem;
    margin: 0;
    color: #858489;
    line-height: 1.6;
}

.oss-featured-project > span:last-child {
    color: #737278;
    font-size: 1.4rem;
    transition: color 160ms ease, transform 160ms ease;
}

.oss-featured-project:hover > span:last-child {
    color: var(--oss-accent-soft);
    transform: translate(0.2rem, -0.2rem);
}

.oss-project-list {
    margin-top: clamp(3rem, 5vw, 5rem);
    border-top: 1px solid var(--line);
}

.oss-project-list > a {
    display: grid;
    grid-template-columns: 3rem minmax(16rem, 1fr) minmax(7rem, 0.3fr) 1.5rem;
    gap: clamp(1rem, 3vw, 3rem);
    align-items: center;
    min-height: clamp(8rem, 12vw, 10rem);
    border-bottom: 1px solid var(--line);
    color: inherit;
    text-decoration: none;
}

.oss-project-list h3 {
    margin: 0 0 0.45rem;
    font-size: clamp(1.45rem, 2.4vw, 2.3rem);
    letter-spacing: -0.035em;
}

.oss-project-list p {
    max-width: 37rem;
    margin: 0;
    color: #7c7b80;
    line-height: 1.55;
}

.oss-project-type {
    color: #6b6a70;
    font-family: "DM Mono", ui-monospace, monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
}

.oss-project-arrow {
    color: #5e5e63;
    transition: color 160ms ease, transform 160ms ease;
}

.oss-project-list > a:hover .oss-project-arrow {
    color: var(--oss-accent-soft);
    transform: translate(0.2rem, -0.2rem);
}

.oss-object-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid var(--line);
}

.oss-object-grid > a {
    min-height: 18rem;
    padding: clamp(2rem, 4vw, 3.5rem);
    border-bottom: 1px solid var(--line);
    color: inherit;
    text-decoration: none;
}

.oss-object-grid > a:nth-child(odd) {
    padding-left: 0;
    border-right: 1px solid var(--line);
}

.oss-object-grid h3 {
    max-width: 18ch;
    margin: clamp(2.2rem, 4vw, 3.8rem) 0 0.7rem;
    font-size: clamp(1.5rem, 2.6vw, 2.4rem);
    letter-spacing: -0.035em;
}

.oss-object-grid p {
    max-width: 32rem;
    margin: 0;
    color: #7b7a7f;
    line-height: 1.55;
}

.oss-object-grid a > span:last-child {
    display: inline-block;
    margin-top: 1.5rem;
    color: #9b9aa0;
    font-size: 0.83rem;
    font-weight: 600;
}

.oss-contribute {
    display: grid;
    grid-template-columns: minmax(18rem, 0.75fr) minmax(28rem, 1.25fr);
    gap: clamp(3rem, 8vw, 10rem);
    padding: clamp(5rem, 9vw, 9rem) var(--side);
    border-bottom: 1px solid var(--line);
}

.oss-contribute__copy h2 {
    max-width: 11ch;
    margin: 1.2rem 0 1.4rem;
    font-size: clamp(2.6rem, 5vw, 5rem);
    letter-spacing: -0.055em;
    line-height: 0.95;
}

.oss-contribute__copy > p:last-child {
    max-width: 34rem;
    margin: 0;
    color: #858489;
    line-height: 1.65;
}

.oss-contribute__steps {
    border-top: 1px solid var(--line);
}

.oss-contribute__steps article {
    display: grid;
    grid-template-columns: 2.5rem minmax(9rem, 0.65fr) minmax(13rem, 1fr);
    gap: 1.5rem;
    align-items: baseline;
    padding: 1.7rem 0;
    border-bottom: 1px solid var(--line);
}

.oss-contribute__steps span {
    color: #5d5d62;
    font-family: "DM Mono", ui-monospace, monospace;
    font-size: 0.68rem;
}

.oss-contribute__steps h3 {
    margin: 0;
    font-size: 1.15rem;
}

.oss-contribute__steps p {
    margin: 0;
    color: #77767b;
    line-height: 1.55;
}

.oss-cta {
    display: grid;
    grid-template-columns: 1fr 0.75fr;
    gap: clamp(3rem, 8vw, 9rem);
    align-items: end;
    padding: clamp(5rem, 9vw, 9rem) var(--side);
    border-bottom: 1px solid var(--line);
    background:
        linear-gradient(120deg, rgb(65 105 185 / 14%), transparent 42%),
        #0d0d0f;
}

.oss-cta h2 {
    margin: 1.25rem 0 0;
    font-size: clamp(3rem, 6.5vw, 7rem);
    letter-spacing: -0.065em;
    line-height: 0.88;
}

.oss-cta > div:last-child {
    max-width: 33rem;
}

.oss-cta > div:last-child > p {
    margin: 0 0 2rem;
    color: #87868b;
    font-size: clamp(1rem, 1.4vw, 1.22rem);
    line-height: 1.6;
}

.oss-cta__actions {
    display: flex;
    gap: 1.2rem;
    align-items: center;
}

.oss-text-link {
    color: #aaa9ae;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
}

.oss-text-link:hover {
    color: var(--ink);
}

@media (max-width: 850px) {
    .oss-hero__lower {
        padding-left: 0;
    }

    .oss-intro,
    .oss-contribute,
    .oss-cta {
        grid-template-columns: 1fr;
    }

    .oss-project-list > a {
        grid-template-columns: 2.5rem 1fr 1.5rem;
    }

    .oss-project-type {
        display: none;
    }
}

@media (max-width: 660px) {
    .oss-hero {
        min-height: 32rem;
    }

    .oss-hero__lower {
        grid-template-columns: 1fr;
        align-items: start;
    }

    .oss-hero__lower .oss-button {
        justify-self: start;
    }

    .oss-section-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .oss-featured-project {
        grid-template-columns: 3.8rem 1fr;
    }

    .oss-featured-project__mark {
        width: 3.8rem;
        height: 3.8rem;
    }

    .oss-featured-project > span:last-child {
        display: none;
    }

    .oss-project-list > a {
        grid-template-columns: 2rem 1fr 1rem;
        min-height: 9rem;
    }

    .oss-object-grid {
        grid-template-columns: 1fr;
    }

    .oss-object-grid > a:nth-child(odd) {
        padding-left: clamp(2rem, 4vw, 3.5rem);
        border-right: 0;
    }

    .oss-contribute__steps article {
        grid-template-columns: 2rem 1fr;
        gap: 0.8rem;
    }

    .oss-contribute__steps p {
        grid-column: 2;
    }

    .oss-cta__actions {
        align-items: flex-start;
        flex-direction: column;
    }
}