:root {
    --graphite: #0F0F10;
    --offwhite: #F7F7F5;
    --copper: #D35400;
    --grey: #A7A7A7;
    --line: #d9d9d5;
    --max: 1280px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--offwhite);
    color: var(--graphite);
    font-family: Manrope, system-ui, sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}


/* =========================
   HEADER
========================= */

.site-header {
    height: 88px;
    padding: 0 4vw;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    background: rgba(247, 247, 245, .94);
    backdrop-filter: blur(12px);
    z-index: 10;
}

.brand {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.brand img {
    display: block;
    width: 190px;
    height: auto;
}

.nav {
    display: flex;
    align-items: center;
    gap: 30px;
    font-size: 12px;
    font-weight: 600;
}

.nav a:hover {
    color: var(--copper);
}

.nav-mask {
    color: var(--copper);
}

.menu {
    display: none;
    border: 0;
    background: none;
    font: 500 11px "IBM Plex Mono", monospace;
}


/* =========================
   GENERAL
========================= */

.eyebrow {
    font: 500 11px "IBM Plex Mono", monospace;
    letter-spacing: .1em;
    color: #666;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

em {
    font-style: normal;
    color: var(--copper);
}


/* =========================
   HERO
========================= */

.hero {
    max-width: var(--max);
    margin: auto;
    min-height: calc(100vh - 88px);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5vw;
    padding: 7vw 4vw;
}

.hero-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

h1 {
    font-size: clamp(56px, 7vw, 96px);
    line-height: .92;
    letter-spacing: -.065em;
    margin: 24px 0 30px;
    font-weight: 700;
}

.hero-copy > p {
    max-width: 560px;
    font-size: 18px;
    line-height: 1.65;
    color: #444;
}

.actions {
    display: flex;
    gap: 12px;
    margin-top: 34px;
    flex-wrap: wrap;
}


/* Buttons */

.button {
    display: inline-flex;
    gap: 28px;
    align-items: center;
    padding: 15px 18px;
    font: 600 11px "IBM Plex Mono", monospace;
    letter-spacing: .05em;
    border: 1px solid var(--graphite);
}

.button-dark {
    background: var(--graphite);
    color: white;
}

.button-line {
    background: transparent;
}

.button-copper {
    background: var(--copper);
    color: white;
    border-color: var(--copper);
}


/* Hero visual */

.hero-visual {
    min-height: 650px;
    position: relative;
    overflow: hidden;
    background: #111;
}

.hero-photo {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-coordinate {
    position: absolute;
    z-index: 2;
    top: 20px;
    right: 20px;
    font: 500 10px/1.5 "IBM Plex Mono", monospace;
    color: white;
}

.hero-watermark {
    position: absolute;
    z-index: 3;
    left: 7%;
    right: auto;
    bottom: 6%;
    width: 42%;
    max-width: 390px;
    opacity: .16;
    mix-blend-mode: multiply;
    filter: none;
}


/* =========================
   PHILOSOPHY
========================= */

.philosophy {
    max-width: var(--max);
    margin: auto;
    padding: 11vw 4vw 13vw;
    display: grid;
    grid-template-columns: 25% 1fr;
    gap: 5vw;
    border-top: 1px solid var(--line);
}

.philosophy-content h2 {
    font-size: clamp(36px, 5vw, 68px);
    line-height: 1.02;
    letter-spacing: -.055em;
    max-width: 900px;
    margin-bottom: 36px;
}

.philosophy-content p {
    max-width: 620px;
    font-size: 17px;
    line-height: 1.75;
    color: #555;
}


/* =========================
   METHOD
========================= */

.method {
    background: var(--graphite);
    color: var(--offwhite);
    padding: 9vw 4vw 10vw;
}

.section-head {
    max-width: var(--max);
    margin: 0 auto 5vw;
}

.section-head h2 {
    font-size: clamp(38px, 5vw, 66px);
    line-height: 1;
    letter-spacing: -.055em;
    margin: 20px 0 0;
}

.method .eyebrow {
    color: #999;
}

.method-grid {
    max-width: var(--max);
    margin: auto;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    border-top: 1px solid #38383a;
}

.method-grid article {
    padding: 28px 22px 0 0;
    border-right: 1px solid #38383a;
    min-height: 230px;
}

.method-grid article + article {
    padding-left: 22px;
}

.method-grid span {
    font: 500 11px "IBM Plex Mono", monospace;
    color: var(--copper);
}

.method-grid h3 {
    font-size: 15px;
    margin: 55px 0 16px;
}

.method-grid p {
    font-size: 13px;
    line-height: 1.6;
    color: #aaa;
    max-width: 190px;
}


/* =========================
   INTERESTS
========================= */

.interests {
    max-width: var(--max);
    margin: auto;
    padding: 10vw 4vw;
}

.section-head > p {
    max-width: 560px;
    color: #555;
    line-height: 1.7;
    margin-top: 28px;
}

.interest-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--line);
}

.interest-grid div {
    min-height: 190px;
    padding: 24px 24px 24px 0;
    border-bottom: 1px solid var(--line);
}

.interest-grid div:nth-child(3n + 2),
.interest-grid div:nth-child(3n + 3) {
    padding-left: 24px;
    border-left: 1px solid var(--line);
}

.interest-grid span {
    font: 500 10px "IBM Plex Mono", monospace;
    color: var(--copper);
}

.interest-grid h3 {
    font-size: 21px;
    margin-top: 65px;
}


/* =========================
   VENTURE
========================= */

.venture {
    background: #ecece7;
    padding: 10vw 4vw;
}

.venture-label {
    max-width: var(--max);
    margin: auto;
}

.venture-layout {
    max-width: var(--max);
    margin: 5vw auto 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 7vw;
    align-items: center;
}

.mask-word {
    font-size: clamp(72px, 11vw, 160px);
    font-weight: 800;
    letter-spacing: -.09em;
    line-height: .8;
}

.venture h2 {
    font-size: clamp(28px, 3.5vw, 48px);
    line-height: 1.05;
    letter-spacing: -.045em;
    max-width: 650px;
    margin: 45px 0 24px;
}

.venture p {
    max-width: 560px;
    line-height: 1.75;
    color: #555;
    margin-bottom: 30px;
}


/* MASK gallery */

.mask-gallery {
    display: block;
}

.mask-gallery figure {
    margin: 0;
    overflow: hidden;
    background: #fff;
}

.mask-gallery img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

.mask-main {
    aspect-ratio: auto;
}

.mask-main img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
}


/* =========================
   APPROACH
========================= */


    /* SECTION */

    /* =========================
   OUR APPROACH SECTION
========================= */

.approach-section {
    position: relative;
    min-height: 100vh;
    padding: 120px 8%;
    overflow: hidden;
}

/* Header */

.approach-header {
    max-width: 900px;
    margin-bottom: 100px;
}

.section-label {
    font-size: 14px;
    letter-spacing: 4px;
    font-weight: 600;
    margin-bottom: 20px;
}

.approach-header h2 {
    font-size: clamp(42px, 7vw, 90px);
    line-height: 0.95;
    margin: 0;
}


/* =========================
   APPROACH CONTAINER
========================= */

.approach-container {
    position: relative;
    max-width: 1100px;
    margin: auto;
}


/* =========================
   APPROACH ITEM
========================= */

.approach-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 40px;

    padding: 70px 0;

    border-top: 1px solid rgba(0, 0, 0, 0.2);

    /* Initial position */
    opacity: 0;
    transform: translateX(-120px);

    /*
       Animation will be activated
       by JavaScript
    */
    transition:
        transform 1s cubic-bezier(0.22, 1, 0.36, 1),
        opacity 0.8s ease;
}


/* Animated state */

.approach-item.active {
    opacity: 1;
    transform: translateX(0);
}


/* =========================
   NUMBER
========================= */

.approach-number {
    font-size: 18px;
    font-weight: 500;
    opacity: 0.5;
}


/* =========================
   CONTENT
========================= */

.approach-content {
    max-width: 750px;
}

.approach-tag {
    display: inline-block;

    font-size: 13px;
    letter-spacing: 3px;
    font-weight: 700;

    margin-bottom: 20px;
}

.approach-content h3 {
    font-size: clamp(32px, 5vw, 65px);
    line-height: 1;

    margin: 0 0 25px;
}

.approach-content p {
    max-width: 600px;

    font-size: 18px;
    line-height: 1.7;

    opacity: 0.7;
}


/* =========================
   FINAL QUESTION
========================= */

.final-item {
    padding-bottom: 150px;
}

.final-item .approach-content h3 {
    font-size: clamp(40px, 6vw, 80px);
}


/* =========================
   MOBILE
========================= */

@media (max-width: 700px) {

    .approach-section {
        padding: 90px 6%;
    }

    .approach-header {
        margin-bottom: 60px;
    }

    .approach-item {
        grid-template-columns: 1fr;
        gap: 15px;

        padding: 50px 0;

        transform: translateX(-80px);
    }

    .approach-number {
        font-size: 14px;
    }

    .approach-content h3 {
        font-size: 38px;
    }

    .approach-content p {
        font-size: 16px;
    }
}



/* =========================
   CONTACT
========================= */

.contact {
    background: var(--graphite);
    color: var(--offwhite);
    padding: 11vw 4vw;
}

.contact-inner {
    max-width: var(--max);
    margin: auto;
}

.contact .eyebrow {
    color: #999;
}

.contact h2 {
    font-size: clamp(58px, 8vw, 110px);
    line-height: .9;
    letter-spacing: -.07em;
    margin: 28px 0;
}

.contact p {
    font-size: 18px;
    color: #aaa;
    margin-bottom: 35px;
}

.contact-email {
    display: inline-block;
    color: var(--copper);
    font: 600 clamp(18px, 2.3vw, 28px) Manrope, sans-serif;
    border-bottom: 1px solid var(--copper);
    padding-bottom: 7px;
    margin: 8px 0 34px;
}

.company-details {
    display: grid;
    gap: 7px;
    max-width: 560px;
    color: #aaa;
    font-size: 13px;
    line-height: 1.65;
}

.company-details strong {
    color: var(--offwhite);
    font-size: 13px;
    letter-spacing: .03em;
}

.company-details span {
    font: 500 10px "IBM Plex Mono", monospace;
    color: #777;
    text-transform: uppercase;
    letter-spacing: .1em;
    margin-top: 5px;
}

.company-details address {
    font-style: normal;
    color: #aaa;
}


/* =========================
   FOOTER
========================= */

.footer {
    background: #080809;
    color: #999;
    padding: 50px 4vw;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 5vw;
    font-size: 12px;
}

.footer-brand {
    color: white;
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -.06em;
}

.footer-brand img {
    width: 190px;
    filter: invert(1) grayscale(1);
    opacity: .95;
}

.footer-brand span {
    display: block;
    font: 500 9px "IBM Plex Mono", monospace;
    letter-spacing: .14em;
    margin-top: 6px;
}

.footer p {
    margin-top: 18px;
}

.footer-address {
    max-width: 430px;
    line-height: 1.65;
    color: #666;
}

.footer-links,
.footer-legal {
    display: flex;
    flex-direction: column;
    gap: 13px;
}

.footer a:hover {
    color: var(--copper);
}

.footer-legal small {
    margin-top: 22px;
    color: #666;
}


/* =========================
   MOBILE
========================= */

@media (max-width: 800px) {

    .site-header {
        height: 74px;
        padding: 0 20px;
    }

    .brand img {
        width: 155px;
    }

    .nav {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: var(--offwhite);
        padding: 24px 20px;
        flex-direction: column;
        align-items: flex-start;
        border-bottom: 1px solid var(--line);
    }

    .nav.open {
        display: flex;
    }

    .menu {
        display: block;
    }


    /* Hero */

    .hero {
        grid-template-columns: 1fr;
        padding: 60px 20px 70px;
        min-height: auto;
    }

    .hero-visual {
        min-height: 420px;
    }

    .hero-watermark {
        width: 55%;
        left: 6%;
        right: auto;
        bottom: 5%;
    }


    /* Philosophy */

    .philosophy {
        grid-template-columns: 1fr;
        padding: 80px 20px;
    }


    /* General sections */

    .method,
    .interests,
    .venture,
    .approach,
    .contact {
        padding-left: 20px;
        padding-right: 20px;
    }


    /* Method */

    .method-grid {
        grid-template-columns: 1fr;
    }

    .method-grid article,
    .method-grid article + article {
        border-right: 0;
        border-bottom: 1px solid #38383a;
        padding: 24px 0;
        min-height: auto;
    }

    .method-grid h3 {
        margin: 35px 0 12px;
    }


    /* Interests */

    .interest-grid {
        grid-template-columns: 1fr;
    }

    .interest-grid div,
    .interest-grid div:nth-child(3n + 2),
    .interest-grid div:nth-child(3n + 3) {
        padding: 24px 0;
        border-left: 0;
    }

    .interest-grid h3 {
        margin-top: 42px;
    }


    /* Venture */

    .venture-layout {
        grid-template-columns: 1fr;
    }

    .mask-placeholder {
        max-width: 520px;
    }


    /* Approach */

    .approach-layout {
        display: block;
    }

    .flow {
        gap: 10px;
        font-size: 14px;
        line-height: 1.8;
        margin-bottom: 35px;
    }

    .flow i {
        font-size: 16px;
    }

    .approach-layout p {
        font-size: 20px;
        line-height: 1.6;
    }


    /* Footer */

    .footer {
        grid-template-columns: 1fr;
        padding: 40px 20px;
    }

}