@font-face {
    font-family: "Hertz";
    src: url("../assets/Hertz Web W04 Medium.ttf") format("truetype");
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

:root {
    --paper: #ffffff;
    --ink: #000000;
    --muted: #949494;
    --border-soft: #949494;
    --font-serif: "Hertz", "Songti SC", "STSong", serif;
    --canvas-width: 1440px;
    --rail-top: 166px;
    --rail-left: 80px;
    --sidebar-width: 193px;
    --nav-width: 257px;
    --content-width: 644px;
    --content-gap: 8px;
    --nav-start: 455px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    background: var(--paper);
    color: var(--ink);
}

.page-viewport {
    width: 100%;
    overflow-x: auto;
    overflow-y: auto;
}

.page-canvas {
    width: var(--canvas-width);
    margin: 0 auto;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: transparent;
    pointer-events: none;
}

.site-header__inner {
    position: relative;
    width: 100%;
    height: 67px;
}

.logo,
.corner-nav {
    pointer-events: auto;
}

.logo {
    position: absolute;
    top: 24px;
    left: 26px;
    display: block;
    width: 152px;
    height: 37px;
    line-height: 0;
    text-decoration: none;
}

.logo img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.corner-nav {
    --corner-nav-width: 107px;
    --corner-nav-height: 36px;
    --corner-nav-frame-width: 34px;
    --corner-nav-frame-height: 50px;
    --corner-nav-frame-center: 99.92px;

    position: absolute;
    top: 28px;
    right: 27px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: var(--corner-nav-width);
    height: var(--corner-nav-height);
    margin: 0;
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 500;
    line-height: 1;
}

.corner-nav[data-active="n"] {
    --corner-nav-frame-center: 7.7px;
}

.corner-nav[data-active="x"] {
    --corner-nav-frame-center: 54.12px;
}

.corner-nav[data-active="y"] {
    --corner-nav-frame-center: 99.92px;
}

.corner-nav__frame {
    position: absolute;
    top: 50%;
    left: var(--corner-nav-frame-center);
    width: var(--corner-nav-frame-width);
    height: var(--corner-nav-frame-height);
    border: 1px solid var(--border-soft);
    pointer-events: none;
    transform: translate(-50%, calc(-50% + 2px));
}

.corner-nav__item {
    position: relative;
    z-index: 1;
    display: block;
    flex: 0 0 auto;
    margin: 0;
    padding: 0;
    border: 0;
    background: none;
    color: inherit;
    font: inherit;
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
    cursor: pointer;
}

.sidebar {
    position: fixed;
    top: var(--rail-top);
    left: calc(50% - var(--canvas-width) / 2 + var(--rail-left));
    z-index: 90;
    width: var(--sidebar-width);
    margin: 0;
    background: transparent;
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 500;
    line-height: 40px;
}

.sidebar p {
    margin: 0;
}

.sidebar__item {
    position: relative;
    width: fit-content;
    cursor: pointer;
}

.sidebar__item::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 7px;
    width: 100%;
    height: 1px;
    background: var(--ink);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.45s ease;
}

.sidebar__item.is-active::after {
    transform: scaleX(1);
}

.sidebar:has(.sidebar__item:hover) .sidebar__item.is-active:not(:hover)::after {
    transform: scaleX(0);
}

.sidebar__item:hover::after {
    transform: scaleX(1);
}

.sidebar__han {
    font-size: 20px;
    line-height: 45px;
}

.projects-flow {
    margin-top: var(--rail-top);
    padding:
        0
        calc(var(--canvas-width) - var(--nav-start) - var(--nav-width) - var(--content-gap) - var(--content-width))
        120px
        var(--nav-start);
}

.project {
    display: grid;
    grid-template-columns: var(--nav-width) var(--content-width);
    column-gap: var(--content-gap);
    align-items: start;
    scroll-margin-top: var(--rail-top);
}

.project__nav {
    position: relative;
}

.project__nav-placeholder {
    width: var(--nav-width);
    height: 0;
}

.project__nav-sticky {
    width: var(--nav-width);
    font-family: var(--font-serif);
    font-weight: 500;
}

.project__nav-sticky.is-fixed {
    position: fixed;
    top: var(--rail-top);
    z-index: 80;
}

.project__title {
    margin: 0;
    font-size: 22px;
    line-height: 30px;
}

.project__meta {
    margin: 0;
    color: var(--muted);
    font-size: 16px;
    line-height: 30px;
}

.project__content {
    position: relative;
    min-height: 4322px;
}

.media,
.section-title,
.copy {
    position: absolute;
    margin: 0;
}

.media {
    overflow: hidden;
    background: #e8e8e8;
}

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

.section-title {
    font-family: var(--font-serif);
    font-size: 16px;
    font-weight: 500;
    line-height: 30px;
}

.copy {
    font-family: var(--font-serif);
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
}

.copy p {
    margin: 0 0 20px;
}

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

.media--hero {
    top: 0;
    left: 0;
    width: 644px;
    height: 424px;
}

.section-title--residence {
    top: 468px;
    left: 0;
    width: 155px;
}

.copy--residence {
    top: 471px;
    left: 265px;
    width: 387px;
}

.media--building {
    top: 806px;
    left: 0;
    width: 644px;
    height: 419px;
}

.section-title--font {
    top: 1391px;
    left: 0;
    width: 155px;
}

.media--type-sample {
    top: 1391px;
    left: 270px;
    width: 375px;
    height: 174px;
}

.media--alphabet {
    top: 1862px;
    left: 0;
    width: 644px;
    height: 273px;
}

.copy--font {
    top: 1609px;
    left: 265px;
    width: 387px;
}

.media--icons {
    top: 2229px;
    left: 0;
    width: 644px;
    height: 426px;
}

.media--signage-photo {
    top: 2772px;
    left: 0;
    width: 644px;
    height: 461px;
}

.media--signage-detail {
    top: 3334px;
    left: 296px;
    width: 347px;
    height: 461px;
}

.section-title--signage {
    top: 3684px;
    left: 0;
    width: 155px;
}

.copy--signage {
    top: 3713px;
    left: 0;
    width: 255px;
}

.media--collateral {
    top: 3900px;
    left: 0;
    width: 645px;
    height: 422px;
}

@media (max-width: 1440px) {
    .sidebar {
        left: var(--rail-left);
    }

    .page-viewport {
        overflow-x: auto;
    }
}