:root {
      --paper: #f7f3ea;
      --paper-2: #efe9db;
      --ink: #171512;
      --ink-soft: #5c574d;
      --line-soft: rgba(23, 21, 18, 0.16);
      --orange: #ff4d00;
      --orange-dark: #d63f00;
      --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-mono: "IBM Plex Mono", ui-monospace, monospace;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { background: var(--paper); color: var(--ink); font-family: var(--font-sans); line-height: 1.75; overflow-x: hidden; }
    ::selection { background: var(--orange); color: var(--paper); }
    a { color: inherit; text-decoration: none; }
    ul { list-style: none; }
    button { font-family: inherit; }
    .container { width: min(1200px, calc(100% - 40px)); margin: 0 auto; }
    .mono { font-family: var(--font-mono); }
    body::before {
      content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
      background-image: radial-gradient(rgba(23, 21, 18, 0.045) 1px, transparent 1px);
      background-size: 22px 22px;
    }
    main, header, footer, .ticker { position: relative; z-index: 1; }
    .reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s cubic-bezier(.22,1,.36,1); }
    .reveal.on { opacity: 1; transform: none; }

    /* Ticker */
    .ticker { background: var(--orange); color: var(--paper); font-family: var(--font-mono); font-size: 12.5px; font-weight: 700; letter-spacing: 1px; overflow: hidden; white-space: nowrap; padding: 7px 0; border-bottom: 2px solid var(--ink); }
    .ticker-track { display: inline-block; animation: ticker-scroll 32s linear infinite; }
    .ticker-track span { margin: 0 26px; }
    @keyframes ticker-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

    /* Nav */
    .nav { position: sticky; top: 0; z-index: 100; background: var(--paper); border-bottom: 2px solid var(--ink); }
    .nav-inner { display: flex; align-items: stretch; height: 62px; }
    .logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 900; font-size: 21px; letter-spacing: 1px; padding-right: 28px; border-right: 2px solid var(--ink); }
    .logo img { display: block; width: 32px; height: 32px; object-fit: contain; }
    .nav-links { display: flex; align-items: stretch; }
    .nav-links a { display: flex; align-items: center; padding: 0 22px; font-size: 14.5px; font-weight: 500; border-right: 1px solid var(--line-soft); transition: background .15s, color .15s; }
    .nav-links a:hover { background: var(--ink); color: var(--paper); }
    .nav-links a.active { background: var(--orange); color: var(--paper); border-right-color: var(--ink); }
    .nav-drop { position: relative; display: flex; align-items: stretch; border-right: 1px solid var(--line-soft); }
    .nav-drop-trigger { display: flex; align-items: center; gap: 6px; height: 100%; padding: 0 22px; font-size: 14.5px; font-weight: 500; transition: background .15s, color .15s; }
    .nav-drop-trigger.active { background: var(--orange); color: var(--paper); }
    .nav-drop:hover .nav-drop-trigger { background: var(--ink); color: var(--paper); }
    .nav-drop-caret { flex-shrink: 0; transition: transform .15s; }
    .nav-drop:hover .nav-drop-caret { transform: rotate(180deg); }
    .nav-drop-menu { position: absolute; left: 0; top: 100%; background: var(--paper); border: 2px solid var(--ink); box-shadow: 5px 5px 0 var(--ink); min-width: 190px; display: none; z-index: 110; }
    .nav-drop:hover .nav-drop-menu { display: block; }
    .nav-drop-menu a { display: block; padding: 11px 16px; font-size: 13.5px; font-weight: 500; border-bottom: 1px solid var(--line-soft); color: var(--ink); }
    .nav-drop-menu a:last-child { border-bottom: none; }
    .nav-drop-menu a:hover { background: var(--paper-2); color: var(--orange); }
    .nav-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
    .lang-switch { position: relative; }
    .lang-btn { display: flex; align-items: center; gap: 7px; background: transparent; border: 1.5px solid var(--ink); color: var(--ink); padding: 7px 13px; font-size: 13px; font-family: var(--font-mono); cursor: pointer; transition: background .15s, color .15s; }
    .lang-btn:hover { background: var(--ink); color: var(--paper); }
    .lang-menu { position: absolute; right: 0; top: calc(100% + 10px); background: var(--paper); border: 2px solid var(--ink); box-shadow: 5px 5px 0 var(--ink); min-width: 150px; display: none; }
    .lang-menu.open { display: block; }
    .lang-menu a { display: block; padding: 9px 14px; font-size: 13.5px; cursor: pointer; border-bottom: 1px solid var(--line-soft); text-decoration: none; color: inherit; }
    .lang-menu a:last-child { border-bottom: none; }
    .lang-menu a:hover { background: var(--paper-2); }
    .lang-menu a.current { background: var(--orange); color: var(--paper); }
    .nav-toggle { display: none; background: none; border: 1.5px solid var(--ink); width: 40px; height: 40px; font-size: 17px; cursor: pointer; color: var(--ink); }
    .nav-mobile { display: none; }
    @media (max-width: 720px) {
      .nav-links { display: none; }
      .nav-toggle { display: block; }
      .nav-mobile { display: none; flex-direction: column; border-top: 2px solid var(--ink); }
      .nav-mobile.open { display: flex; }
      .nav-mobile a { padding: 14px 0; font-size: 16px; border-bottom: 1px solid var(--line-soft); }
      .nav-mobile a.nav-mobile-sub { padding: 11px 0 11px 18px; font-size: 14px; color: var(--ink-soft); }
    }

    /* Page header */
    .page-head { border-bottom: 2px solid var(--ink); padding: 60px 0 40px; }
    .page-kicker { display: flex; align-items: center; gap: 14px; font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft); margin-bottom: 20px; }
    .page-kicker::before { content: ""; width: 44px; height: 2px; background: var(--orange); }
    .page-head h1 { font-family: var(--font-display); font-weight: 900; font-size: clamp(32px, 5vw, 54px); line-height: 1.25; letter-spacing: 1px; }
    .page-head h1 .accent { color: var(--orange); }
    .page-head p { margin-top: 18px; color: var(--ink-soft); font-size: 16px; max-width: 680px; }

    /* Filter chips */
    .filter-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
    .filter-chip {
      font-family: var(--font-mono); font-size: 13px; font-weight: 700;
      border: 1.5px solid var(--ink); padding: 8px 16px; cursor: pointer;
      background: var(--paper); transition: background .15s, color .15s;
    }
    .filter-chip:hover { background: var(--paper-2); }
    .filter-chip.active { background: var(--ink); color: var(--paper); }

    /* Article grid */
    .blog-sec { padding: 48px 0 80px; }
    .article-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .article-card {
      border: 2px solid var(--ink); background: var(--paper);
      padding: 28px 26px; display: flex; flex-direction: column;
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .article-card:hover { transform: translateY(-4px); box-shadow: 6px 6px 0 var(--orange); }
    .article-card .meta-row {
      display: flex; align-items: center; gap: 12px;
      font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-soft);
      margin-bottom: 14px;
    }
    .article-card .cat {
      border: 1px solid var(--orange); color: var(--orange);
      padding: 2px 9px; font-weight: 700; letter-spacing: 1px;
    }
    .article-card h2 { font-family: var(--font-display); font-size: 19px; font-weight: 900; line-height: 1.4; margin-bottom: 10px; }
    .article-card p { font-size: 13.5px; color: var(--ink-soft); flex-grow: 1; margin-bottom: 16px; }
    .article-card .read-more {
      font-family: var(--font-mono); font-size: 12.5px; font-weight: 700; color: var(--orange);
      align-self: flex-start; border-bottom: 1.5px solid var(--orange);
    }
    .empty-state { text-align: center; padding: 60px 0; color: var(--ink-soft); display: none; }
    .empty-state.show { display: block; }

    noscript .article-grid { display: block; }
    noscript .article-card { margin-bottom: 16px; }

    @media (max-width: 760px) {
      .article-grid { grid-template-columns: 1fr; }
    }

    /* Footer */
    footer { background: var(--paper-2); }
    .foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.3fr; gap: 44px; padding: 56px 0 44px; border-bottom: 1px solid var(--line-soft); }
    .foot-grid h4 { font-family: var(--font-mono); font-size: 12px; letter-spacing: 2px; color: var(--ink-soft); margin-bottom: 18px; text-transform: uppercase; }
    .foot-grid ul li { margin-bottom: 10px; }
    .foot-grid a { font-size: 14.5px; border-bottom: 1px solid transparent; transition: border-color .15s, color .15s; }
    .foot-grid a:hover { color: var(--orange); border-bottom-color: var(--orange); }
    .foot-brand .logo { border-right: none; padding-right: 0; }
    .foot-brand p { color: var(--ink-soft); font-size: 14px; margin-top: 16px; max-width: 300px; }
    .foot-lang { display: flex; flex-wrap: wrap; gap: 8px; }
    .foot-lang a { font-size: 12.5px; font-family: var(--font-mono); border: 1.5px solid var(--line-soft); padding: 5px 12px; cursor: pointer; transition: all .15s; display: inline-block; text-decoration: none; color: inherit; }
    .foot-lang a:hover { border-color: var(--ink); }
    .foot-lang a.current { background: var(--ink); color: var(--paper); border-color: var(--ink); }
    .foot-bottom { padding: 24px 0 30px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13px; color: var(--ink-soft); }
    @media (max-width: 720px) { .foot-grid { grid-template-columns: 1fr 1fr; } }

    @media (prefers-reduced-motion: reduce) {
      .ticker-track { animation: none; }
      .reveal { opacity: 1; transform: none; transition: none; }
      html { scroll-behavior: auto; }
    }