:root {
  color-scheme: light;
  --ink: #242424;
  --muted: #6c6c6c;
  --line: #dedbd4;
  --paper: #fffefb;
  --back: #f3f1ec;
  --accent: #704556;
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-gutter: stable; }
body { margin: 0; color: var(--ink); background: var(--paper); }
a { color: inherit; text-underline-offset: .2em; }
a:hover { color: var(--accent); }
.diary-head { display: flex; width: min(100% - 40px, 1120px); margin: auto; padding: 28px 0 22px; gap: 9px; border-bottom: 1px solid var(--line); font-size: .78rem; font-weight: 700; letter-spacing: .14em; }
.diary-head a { text-decoration: none; }
.diary-head span { color: #aaa; }
.diary-main, .article-main { width: min(100% - 40px, 1120px); margin: auto; }
.page-intro { padding: 70px 0 36px; }
.page-intro .eyebrow { margin: 0 0 10px; color: var(--accent); font-size: .69rem; font-weight: 700; letter-spacing: .16em; }
.page-intro h1 { margin: 0; font-size: clamp(2.1rem, 5vw, 4.1rem); line-height: 1; letter-spacing: -.035em; }
.page-intro > p:last-child { margin: 18px 0 0; color: var(--muted); font-size: .82rem; }
.page-switcher { display: flex; gap: 22px; margin-bottom: 32px; border-bottom: 1px solid var(--line); }
.page-switcher a { padding: 10px 1px; color: #777; font-size: .7rem; font-weight: 700; letter-spacing: .08em; text-decoration: none; }
.page-switcher a[aria-current="page"] { color: var(--ink); border-bottom: 2px solid var(--ink); }
.listing-main .page-intro { padding: 36px 0 18px; }
.listing-main .page-intro h1 { font-size: clamp(1.65rem, 3.2vw, 2.65rem); }
.listing-main .page-intro > p:last-child { margin-top: 8px; }
.listing-main .page-switcher { margin-bottom: 20px; }

.latest-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; padding-bottom: 90px; }
.entry-card { position: relative; aspect-ratio: 16 / 9; min-width: 0; overflow: hidden; border-radius: 12px; background: var(--cover); isolation: isolate; }
.entry-card::before { content: ""; position: absolute; z-index: -2; inset: 0; opacity: .92; }
.entry-card::after { content: ""; position: absolute; z-index: -1; inset: 34% 0 0; background: linear-gradient(to bottom, transparent, var(--cover-overlay) 76%); }
.entry-card.has-cover-image::before { background: var(--cover-image) center / cover no-repeat; clip-path: none; opacity: 1; transform: none; }
.cover-window::before { background: radial-gradient(circle at 74% 25%, var(--accent) 0 8%, transparent 8.5%), linear-gradient(90deg, transparent 47%, rgb(255 255 255 / .22) 47% 49%, transparent 49%), linear-gradient(transparent 57%, rgb(12 18 30 / .68) 57% 60%, transparent 60%); }
.cover-circuit::before { background: repeating-linear-gradient(90deg, transparent 0 42px, var(--accent) 43px 45px, transparent 46px 70px), repeating-linear-gradient(0deg, transparent 0 49px, rgb(255 255 255 / .17) 50px 52px, transparent 53px 76px); clip-path: polygon(8% 13%, 92% 13%, 92% 73%, 69% 73%, 69% 92%, 8% 92%); }
.cover-stage::before { background: radial-gradient(ellipse at 50% 4%, var(--accent) 0 3%, transparent 35%), linear-gradient(72deg, transparent 0 38%, rgb(255 255 255 / .2) 39% 43%, transparent 44%), linear-gradient(-72deg, transparent 0 38%, rgb(255 255 255 / .14) 39% 43%, transparent 44%); }
.cover-archive::before { background: linear-gradient(145deg, transparent 18%, var(--accent) 18% 46%, transparent 46%), repeating-linear-gradient(0deg, transparent 0 27px, rgb(255 255 255 / .22) 28px 29px); transform: scale(.82) rotate(-4deg); }
.cover-tank::before { background: radial-gradient(ellipse at 68% 62%, var(--accent) 0 18%, transparent 18.5%), linear-gradient(165deg, transparent 0 42%, rgb(255 255 255 / .22) 42.5% 46%, transparent 46.5%), linear-gradient(90deg, transparent 20%, rgb(20 35 16 / .38) 20% 82%, transparent 82%); clip-path: polygon(12% 25%, 82% 25%, 82% 42%, 96% 42%, 96% 48%, 78% 48%, 88% 78%, 20% 78%); }
.card-main { position: absolute; inset: 0; display: flex; min-width: 0; flex-direction: column; justify-content: flex-end; padding: 22px 22px 49px; color: var(--cover-text); text-decoration: none; }
.card-main:hover { color: var(--cover-text); }
.card-main time { margin-bottom: 8px; color: var(--accent); font-size: .67rem; font-weight: 700; letter-spacing: .08em; }
.card-main h2 { display: -webkit-box; overflow: hidden; margin: 0; font-size: 1.08rem; line-height: 1.42; overflow-wrap: anywhere; text-wrap: pretty; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; }
.entry-card > .tag-row { position: absolute; z-index: 2; right: 22px; bottom: 19px; left: 22px; flex-wrap: nowrap; overflow: hidden; white-space: nowrap; }
.tag-row a { color: inherit; font-size: .61rem; text-decoration: none; }
.entry-card > .tag-row a { color: var(--cover-text); opacity: .86; }

.archive-layout { display: grid; grid-template-columns: 130px 1fr; gap: 55px; padding-bottom: 100px; }
.year-nav { position: sticky; top: 24px; align-self: start; display: grid; gap: 12px; padding-top: 8px; }
.year-nav a { color: var(--muted); font-size: 1.05rem; text-decoration: none; }
.archive-year { margin-bottom: 55px; }
.archive-year > h2 { margin: 0 0 19px; font-size: 1.7rem; }
.archive-month { border-top: 1px solid var(--line); }
.archive-month summary { padding: 19px 0 13px; font-size: .8rem; font-weight: 700; cursor: pointer; }
.archive-month ul { margin: 0; padding: 0 0 24px; list-style: none; }
.archive-month li { display: grid; grid-template-columns: 2.5em minmax(0, 1fr); column-gap: 12px; row-gap: 5px; align-items: baseline; padding: 10px 0; border-bottom: 1px dotted var(--line); }
.archive-month li > time { color: var(--muted); font: .72rem "Courier New", monospace; }
    .archive-month li > a {
        min-width: 0;
        overflow-wrap: anywhere;
        font-size: .87rem;
        text-decoration: none;
        font-weight: 500;
    }
.archive-tags { grid-column: 2; min-width: 0; justify-content: flex-start; color: var(--muted); }

.category-chooser { display: flex; flex-wrap: nowrap; gap: 6px; overflow-x: auto; overflow-y: hidden; margin: 0 0 45px; padding-top: 3px; border-bottom: 1px solid var(--line); overscroll-behavior-inline: contain; scrollbar-width: thin; }
.category-chooser a { position: relative; z-index: 0; flex: 0 0 auto; padding: 9px 13px; font-size: .7rem; text-decoration: none; white-space: nowrap; isolation: isolate; }
.category-chooser a::before { content: ""; position: absolute; z-index: -1; inset: 0; border: 1px solid var(--line); border-bottom: 0; background: var(--paper); box-shadow: 1px -1px 0 rgb(36 36 36 / .07); transition: top .14s ease, border-color .14s ease; pointer-events: none; }
.category-chooser a:hover, .category-chooser a:focus-visible { color: inherit; }
.category-chooser a:hover::before, .category-chooser a:focus-visible::before { top: -2px; border-color: #aaa; }
.category-chooser a:focus-visible { outline: 1px dotted var(--muted); outline-offset: -3px; }
.category-chooser a:active::before { top: -1px; }
.category-shelf { display: grid; grid-template-columns: 145px 1fr; column-gap: 30px; padding: 30px 0 50px; border-top: 1px solid var(--ink); }
.category-shelf .shelf-label { grid-row: 1; margin: 5px 0; color: var(--muted); font-size: .6rem; letter-spacing: .14em; }
.category-shelf > h2 { grid-row: 2; margin: 0; font-size: 1.15rem; }
.category-shelf > div { grid-row: 1 / span 2; grid-column: 2; }
.compact-entry { display: grid; grid-template-columns: 7.2em minmax(0, 1fr) minmax(120px, auto); gap: 12px; align-items: baseline; padding: 13px 0; border-bottom: 1px dotted var(--line); }
.compact-entry time { color: var(--muted); font: .68rem "Courier New", monospace; }
.compact-entry h3 { min-width: 0; margin: 0; overflow-wrap: anywhere; font-size: .88rem; font-weight: 500; }
.compact-entry h3 a { text-decoration: none; }
.compact-entry .tag-row { justify-content: end; color: var(--muted); }
.compact-list { padding: 0 0 100px; }

.article-main { max-width: 680px; }
.diary-article { padding: 58px 0 110px; }
.diary-article > header { padding-bottom: 36px; border-bottom: 1px solid var(--line); }
.article-category { margin: 0 0 19px; color: var(--accent); font-size: .69rem; font-weight: 700; letter-spacing: .08em; }
.article-category a { text-decoration: none; }
.diary-article h1 { margin: 0 0 24px; overflow-wrap: anywhere; font-size: clamp(1.8rem, 5vw, 2.8rem); line-height: 1.35; letter-spacing: -.03em; text-wrap: pretty; }
.article-dates { display: flex; flex-wrap: wrap; gap: 7px 18px; color: var(--muted); font-size: .7rem; }
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 15px; }
.article-tags a { padding: 4px 7px; border: 1px solid var(--line); color: var(--muted); font-size: .66rem; text-decoration: none; }
.article-body {
    padding: 44px 0 60px;
    font-size: 1rem;
    line-height: 2.05;
    font-weight: 500;
}
.article-body h2 { margin: 3.4em 0 1em; font-size: 1.38rem; line-height: 1.55; }
.article-body h2:first-child { margin-top: 0; }
.article-body h3 { margin: 2.8em 0 1em; font-size: 1.1rem; }
.article-body p { margin: 0 0 1.65em; }
.article-body ul { margin: 0 0 1.8em; padding-left: 1.4em; }
.article-body blockquote { margin: 2.2em 0; padding: .3em 0 .3em 1.3em; border-left: 3px solid #bbb; color: #595959; }
.article-body blockquote p { margin: 0; }
.article-body pre { overflow-x: auto; padding: 18px; background: #f0efeb; font-size: .82rem; line-height: 1.65; }
.article-body code { padding: .1em .25em; background: #f0efeb; font-family: Consolas, monospace; font-size: .9em; }
.article-info { padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: .69rem; line-height: 1.8; }

.diary-footer { width: min(100% - 40px, 1120px); margin: auto; padding: 28px 0 55px; border-top: 1px solid var(--line); color: var(--muted); font-size: .65rem; text-align: center; }
.diary-footer p { margin: 4px; }
.mobile-diary-nav { display: none; }

@media (min-width: 1440px) {
  .latest-main { width: min(100% - 48px, 1400px); }
  .latest-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 761px) and (max-width: 1024px) {
  .latest-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  body { padding-bottom: 58px; }
  .diary-head, .diary-main, .article-main, .diary-footer { width: min(100% - 30px, 1120px); }
  .diary-head { padding: 19px 0 15px; }
  .page-intro { padding: 42px 0 28px; }
  .page-intro h1 { font-size: 2.25rem; }
  .listing-main .page-intro { padding: 30px 0 22px; }
  .listing-main .page-intro h1 { font-size: 2rem; }
  .page-switcher { display: none; }
  .latest-grid { grid-template-columns: 1fr; gap: 12px; padding-bottom: 58px; }
  .entry-card::after { inset: 0; background: linear-gradient(90deg, var(--cover-overlay), transparent 88%); }
  .entry-card::before { transform: scale(.82) translateX(20%); transform-origin: right center; }
  .entry-card.has-cover-image::before { transform: none; }
  .card-main { justify-content: flex-end; padding: 18px 18px 43px; }
  .card-main h2 { width: 88%; font-size: 1rem; }
  .entry-card > .tag-row { right: 18px; bottom: 15px; left: 18px; }
  .archive-layout { display: block; padding-bottom: 55px; }
  .year-nav { position: static; display: flex; gap: 8px; margin-bottom: 24px; }
  .year-nav::before { content: "年を選ぶ"; align-self: center; margin-right: 5px; color: var(--muted); font-size: .65rem; }
  .year-nav a { padding: 6px 10px; border: 1px solid var(--line); font-size: .78rem; }
  .archive-year > h2 { display: none; }
  .archive-month { border-top: 1px solid var(--line); }
  .archive-month summary { padding: 17px 0; }
  .archive-month li { grid-template-columns: 2em minmax(0, 1fr); column-gap: 8px; row-gap: 5px; padding: 11px 0; }
  .category-chooser { margin-bottom: 25px; }
  .category-shelf { display: block; padding: 24px 0 38px; }
  .category-shelf .shelf-label { margin-bottom: 4px; }
  .category-shelf > h2 { margin-bottom: 13px; }
  .compact-entry { grid-template-columns: 1fr auto; gap: 5px 10px; padding: 12px 0; }
  .compact-entry h3 { grid-column: 1 / -1; grid-row: 1; }
  .compact-entry time { grid-column: 1; grid-row: 2; }
  .compact-entry .tag-row { grid-column: 2; grid-row: 2; }
  .diary-article { padding: 48px 0 70px; }
  .diary-article > header { padding-bottom: 28px; }
  .diary-article h1 { font-size: 1.75rem; text-wrap: wrap; }
  .article-body { padding-top: 34px; font-size: .96rem; line-height: 1.95; }
  .article-body h2 { font-size: 1.25rem; }
  .diary-footer { padding-bottom: 30px; }
  .mobile-diary-nav { position: fixed; z-index: 50; right: 0; bottom: 0; left: 0; display: grid; grid-template-columns: .65fr 1.15fr 1.2fr 1.3fr .55fr; height: 55px; border-top: 1px solid #aaa; background: rgb(255 254 251 / .96); box-shadow: 0 -5px 18px rgb(0 0 0 / .08); }
  .mobile-diary-nav > a, .site-menu > summary { display: grid; height: 55px; place-items: center; border-right: 1px solid var(--line); color: #333; font-size: .61rem; font-weight: 700; text-decoration: none; list-style: none; }
  .site-menu > summary::-webkit-details-marker { display: none; }
  .site-menu { position: relative; }
  .site-menu > div { position: absolute; bottom: 55px; left: 0; display: none; width: 145px; padding: 7px; border: 1px solid #aaa; background: var(--paper); box-shadow: 4px -4px 14px rgb(0 0 0 / .12); }
  .site-menu[open] > div { display: grid; }
  .site-menu > div a { padding: 12px 10px; border-bottom: 1px dotted var(--line); font-size: .69rem; text-decoration: none; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .category-chooser a::before { transition: none; } }