:root {
  --paper: #f3f0e9;
  --paper-deep: #e9e4d9;
  --paper-light: #faf8f3;
  --ink: #18211e;
  --ink-soft: #46504b;
  --muted: #7a817c;
  --line: #d7d2c7;
  --line-dark: #b9b2a6;
  --white: #fffdfa;
  --shadow: 0 18px 50px rgb(24 33 30 / 9%);
  --serif: "Iowan Old Style", "Palatino Linotype", "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --sans: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "Cascadia Mono", "JetBrains Mono", Consolas, monospace;
  --radius: 2px;
  --container: 1380px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); font-size: 15px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
body.admin-body { background: var(--paper-deep); }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
img { display: block; max-width: 100%; }
svg { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 999; top: 8px; left: 8px; padding: 10px 16px; background: var(--ink); color: #fff; transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.paper-grain { position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .55; background-image: radial-gradient(rgb(24 33 30 / 5%) .6px, transparent .6px), linear-gradient(90deg, rgb(24 33 30 / 2%) 1px, transparent 1px); background-size: 5px 5px, 96px 100%; }
.section-kicker { color: var(--accent); font: 600 11px/1.4 var(--mono); letter-spacing: .18em; text-transform: uppercase; }
.button-primary { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 44px; padding: 10px 20px; border: 1px solid var(--accent); border-radius: var(--radius); background: var(--accent); color: #fff; font-weight: 600; letter-spacing: .04em; cursor: pointer; transition: background .22s, color .22s, transform .22s, box-shadow .22s; }
.button-primary:hover { background: var(--ink); border-color: var(--ink); transform: translateY(-2px); box-shadow: 0 10px 24px rgb(24 33 30 / 16%); }
.button-primary svg, .button-primary span { stroke-width: 2; }
.button-primary.full { width: 100%; }
.button-quiet { display: inline-flex; align-items: center; min-height: 44px; padding: 10px 4px; border-bottom: 1px solid var(--line-dark); font-weight: 600; }
.button-quiet:hover { color: var(--accent); border-color: var(--accent); }

.article-prose { color: var(--ink-soft); font-size: 16px; line-height: 2; }
.article-prose > :first-child { margin-top: 0; }
.article-prose h2, .article-prose h3, .article-prose h4 { margin: 2.2em 0 .75em; color: var(--ink); font-family: var(--serif); font-weight: 700; line-height: 1.35; }
.article-prose h2 { padding-bottom: .5em; border-bottom: 1px solid var(--line); font-size: clamp(24px, 2.4vw, 34px); }
.article-prose h3 { font-size: 22px; }
.article-prose h4 { font-size: 18px; }
.article-prose p { margin: 0 0 1.35em; }
.article-prose ul, .article-prose ol { margin: 0 0 1.5em; padding-left: 1.4em; }
.article-prose li { margin: .45em 0; padding-left: .3em; }
.article-prose li::marker { color: var(--accent); font-family: var(--mono); }
.article-prose blockquote { position: relative; margin: 2em 0; padding: 20px 26px 20px 34px; border-left: 3px solid var(--accent); background: var(--accent-soft); color: var(--ink); font: 500 17px/1.9 var(--serif); }
.article-prose blockquote::before { content: "“"; position: absolute; top: 6px; left: 12px; color: var(--accent); font: 700 40px/1 var(--serif); opacity: .45; }
.article-prose a { color: var(--accent); border-bottom: 1px solid currentColor; }
.article-prose a:hover { color: var(--ink); }
.article-prose code { padding: 2px 6px; border: 1px solid var(--line); background: var(--paper-light); color: var(--accent-dark); font: 13px var(--mono); }
.article-prose pre { overflow-x: auto; margin: 1.8em 0; padding: 22px 24px; border-left: 3px solid var(--ink); background: #17201d; color: #e8e6df; line-height: 1.7; }
.article-prose pre code { padding: 0; border: 0; background: none; color: inherit; font-size: 13px; }
.article-prose img { width: 100%; margin: 1.8em 0; border: 1px solid var(--line); }
.article-prose hr { height: 1px; margin: 2.5em 0; border: 0; background: var(--line); }
.article-prose strong { color: var(--ink); }
.empty-state { display: grid; place-content: center; min-height: 260px; padding: 36px; border: 1px dashed var(--line-dark); color: var(--muted); text-align: center; }
.empty-state strong { display: block; margin-bottom: 8px; color: var(--ink); font: 700 24px var(--serif); }
.not-found { display: grid; place-items: center; min-height: 68vh; padding: 80px 24px; text-align: center; }
.not-found span { color: var(--accent); font: 700 clamp(80px, 16vw, 180px)/1 var(--serif); letter-spacing: -.06em; opacity: .85; }
.not-found h1 { margin: -10px 0 10px; font: 700 clamp(28px, 4vw, 48px)/1.25 var(--serif); }
.not-found p { margin: 0 0 28px; color: var(--muted); }
.form-error { min-height: 22px; color: #a12d1f; font-size: 13px; }
.field { display: grid; gap: 8px; }
.field > span { display: flex; justify-content: space-between; color: var(--ink); font-size: 13px; font-weight: 600; }
.field > span em { color: var(--muted); font: 400 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.field input, .field textarea, .field select, .login-form input, .admin-search input, .header-search input, .sidebar-search input { width: 100%; border: 1px solid var(--line-dark); border-radius: var(--radius); background: var(--paper-light); color: var(--ink); outline: none; transition: border-color .2s, box-shadow .2s; }
.field input, .field select, .login-form input { height: 44px; padding: 0 13px; }
.field textarea { padding: 12px 13px; resize: vertical; line-height: 1.7; }
.field input:focus, .field textarea:focus, .field select:focus, .login-form input:focus, .admin-search input:focus, .header-search input:focus, .sidebar-search input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.field small { color: var(--muted); font-size: 12px; }
.admin-ghost { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 36px; padding: 7px 13px; border: 1px solid var(--line-dark); border-radius: var(--radius); background: transparent; color: var(--ink-soft); font-size: 13px; cursor: pointer; transition: border-color .2s, color .2s, background .2s; }
.admin-ghost:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.upload-button { display: inline-flex; align-items: center; justify-content: center; min-height: 38px; padding: 8px 14px; border: 1px solid var(--ink); background: var(--ink); color: #fff; font-size: 13px; cursor: pointer; }
.upload-button:hover { background: var(--accent); border-color: var(--accent); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } }