:root {
    color-scheme: light;
    --ink: #17251f;
    --muted: #56645d;
    --paper: #f4f5f0;
    --white: #fff;
    --green: #b8f36b;
    --green-dark: #26442f;
    --line: rgba(23, 37, 31, 0.16);
    --line-light: rgba(255, 255, 255, 0.2);
    --content-width: 1180px;
    font-family: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.6;
}

.skip-link {
    position: absolute;
    z-index: 10;
    top: 1rem;
    left: 1rem;
    padding: 0.7rem 1rem;
    transform: translateY(-160%);
    background: var(--white);
    color: var(--ink);
}

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

.hero {
    position: relative;
    display: flex;
    min-height: min(850px, 100svh);
    align-items: center;
    overflow: hidden;
    padding: clamp(2rem, 7vw, 7rem) max(1.5rem, calc((100vw - var(--content-width)) / 2));
    background: #18231e;
    color: var(--white);
    isolation: isolate;
}

.hero::after {
    position: absolute;
    z-index: -1;
    background: linear-gradient(90deg, rgba(9, 17, 13, 0.88) 0%, rgba(9, 17, 13, 0.56) 54%, rgba(9, 17, 13, 0.08) 100%);
    content: "";
    inset: 0;
}

.hero__motion {
    position: absolute;
    z-index: -2;
    width: 100%;
    height: 100%;
    inset: 0;
    object-fit: cover;
    filter: brightness(1.15) saturate(1.05);
}

.hero__content {
    width: min(760px, 100%);
    padding: 3rem 0;
}

.eyebrow {
    margin: 0 0 1rem;
    color: var(--green);
    font-size: 0.77rem;
    font-weight: 750;
    letter-spacing: 0.14em;
    line-height: 1.4;
    text-transform: uppercase;
}

.eyebrow--dark {
    color: var(--green-dark);
}

.hero h1 {
    max-width: 850px;
    margin: 0;
    font-size: clamp(3rem, 8vw, 6.7rem);
    font-weight: 680;
    letter-spacing: -0.065em;
    line-height: 0.98;
}

.hero__lead {
    max-width: 660px;
    margin: 2rem 0 1.2rem;
    color: rgba(255, 255, 255, 0.84);
    font-size: clamp(1.08rem, 2vw, 1.38rem);
    line-height: 1.55;
}

.hero__byline {
    margin: 0 0 2rem;
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.95rem;
}

.hero__byline span {
    padding: 0 0.45rem;
    color: var(--green);
}

.hero__index {
    position: absolute;
    right: max(1.5rem, calc((100vw - var(--content-width)) / 2));
    bottom: 2rem;
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.72rem;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.button {
    display: inline-flex;
    min-height: 3.25rem;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 0.8rem 1.15rem;
    border: 1px solid transparent;
    border-radius: 3px;
    font-size: 0.9rem;
    font-weight: 700;
    text-decoration: none;
    transition: background-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.button:hover {
    transform: translateY(-2px);
}

.button--light {
    background: var(--green);
    color: #152118;
}

.button--light:hover {
    background: #d2ff9b;
}

.button--dark {
    border-color: var(--green);
    background: var(--green);
    color: #152118;
}

.button--dark:hover {
    background: #d2ff9b;
}

.button:focus-visible,
a:focus-visible {
    outline: 3px solid #70a8ff;
    outline-offset: 4px;
}

.section {
    width: min(var(--content-width), calc(100% - 3rem));
    margin: 0 auto;
    padding: clamp(4.5rem, 9vw, 8rem) 0;
}

.section__label {
    margin-bottom: clamp(2rem, 5vw, 4rem);
    padding-bottom: 0.9rem;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 750;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.intro-grid,
.contribution-grid,
.stack-heading,
.videos-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.85fr);
    gap: clamp(2rem, 7vw, 7rem);
}

.section h2,
.project-record h2 {
    margin: 0;
    font-size: clamp(2.25rem, 5vw, 4.35rem);
    font-weight: 650;
    letter-spacing: -0.055em;
    line-height: 1.04;
}

.intro-copy {
    max-width: 590px;
    color: var(--muted);
    font-size: 1.04rem;
}

.intro-copy p:first-child {
    margin-top: 0;
}

.intro-copy p:last-child {
    margin-bottom: 0;
}

.process-line {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.7rem 1rem;
    margin-top: clamp(3rem, 7vw, 6rem);
    padding: 1.2rem 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    font-size: 0.82rem;
    font-weight: 700;
}

.process-arrow {
    color: #72905c;
}

.section--dark {
    width: 100%;
    padding: clamp(4.5rem, 9vw, 8rem) max(1.5rem, calc((100vw - var(--content-width)) / 2));
    background: #1c2922;
    color: var(--white);
}

.section--dark .section__label {
    border-color: var(--line-light);
    color: rgba(255, 255, 255, 0.64);
}

.contribution-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(340px, 1fr);
}

.section-lead {
    max-width: 440px;
    margin-top: 1.5rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.05rem;
}

.contribution-list {
    border-top: 1px solid var(--line-light);
}

.contribution-item {
    display: grid;
    grid-template-columns: 3rem 1fr;
    gap: 1rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--line-light);
}

.contribution-item__number {
    padding-top: 0.25rem;
    color: var(--green);
    font-size: 0.78rem;
    font-weight: 750;
}

.contribution-item h3,
.video-card h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
}

.contribution-item p {
    margin: 0.45rem 0 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.94rem;
}

.technical-note {
    display: grid;
    grid-template-columns: minmax(180px, 0.35fr) 1fr;
    gap: 2rem;
    align-items: start;
    margin-top: clamp(3rem, 6vw, 5rem);
    padding: 1.4rem 0 0;
    border-top: 1px solid var(--line-light);
}

.technical-note__tag {
    color: var(--green);
    font-size: 0.72rem;
    font-weight: 750;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.technical-note p {
    max-width: 760px;
    margin: 0;
    color: rgba(255, 255, 255, 0.84);
    font-size: 1.05rem;
}

.stack-heading {
    align-items: end;
}

.stack-heading > p,
.videos-heading > p {
    max-width: 430px;
    margin: 0 0 0.25rem;
    color: var(--muted);
}

.tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin: 3rem 0 0;
    padding: 0;
    list-style: none;
}

.tech-list li {
    padding: 0.7rem 1rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.45);
    font-size: 0.88rem;
    font-weight: 650;
}

.section--videos {
    padding-bottom: clamp(4rem, 8vw, 7rem);
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.video-wrapper {
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: #1c2922;
}

.video-wrapper iframe {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
}

.video-card h3 {
    margin-top: 1.2rem;
    font-size: 1.2rem;
}

.video-card > p {
    margin: 0.35rem 0 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.project-record {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.75fr);
    gap: clamp(2rem, 7vw, 7rem);
    align-items: end;
    padding: clamp(3rem, 7vw, 6rem) max(1.5rem, calc((100vw - var(--content-width)) / 2));
    background: #dce5d4;
}

.project-record .eyebrow {
    color: var(--green-dark);
}

.project-record h2 {
    font-size: clamp(2rem, 4vw, 3.4rem);
}

.project-record__action p {
    max-width: 480px;
    margin: 0 0 1.5rem;
    color: #45564b;
}

.site-footer {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.4rem max(1.5rem, calc((100vw - var(--content-width)) / 2));
    background: #1c2922;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.78rem;
}

.site-footer a {
    color: var(--white);
    text-decoration: none;
}

@media (max-width: 760px) {
    .hero {
        min-height: min(760px, 92svh);
        padding-right: 1.5rem;
        padding-left: 1.5rem;
    }

    .hero::after {
        background: linear-gradient(90deg, rgba(9, 17, 13, 0.86), rgba(9, 17, 13, 0.38));
    }

    .hero__index {
        right: 1.5rem;
    }

    .intro-grid,
    .contribution-grid,
    .stack-heading,
    .videos-heading,
    .project-record {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .contribution-grid {
        gap: 3rem;
    }

    .technical-note {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }

    .video-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .section--dark,
    .project-record {
        padding-right: 1.5rem;
        padding-left: 1.5rem;
    }
}

@media (max-width: 480px) {
    .section {
        width: min(var(--content-width), calc(100% - 2rem));
    }

    .hero {
        min-height: 88svh;
        padding-right: 1rem;
        padding-left: 1rem;
    }

    .hero__index {
        right: 1rem;
        bottom: 1rem;
    }

    .process-line {
        gap: 0.55rem 0.7rem;
        font-size: 0.75rem;
    }

    .process-arrow {
        display: none;
    }

    .contribution-item {
        grid-template-columns: 2rem 1fr;
        gap: 0.6rem;
    }

    .site-footer {
        flex-direction: column;
        padding-right: 1rem;
        padding-left: 1rem;
    }
}

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

    .hero__motion {
        display: none;
    }

    .button {
        transition: none;
    }
}