:root{--font-sans: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;--font-display: "Noto Serif SC", "Songti SC", "SimSun", serif;--font-mono: "Space Mono", ui-monospace, Consolas, "Courier New", monospace;--header-h: 57px}:root,:root[data-theme=dark]{color-scheme:dark;--color-paper: #17181b;--color-panel: #202227;--color-ink: #e8e2d5;--color-muted: #9a948a;--color-grid: #33363c;--color-accent: #c05b4d;--color-jade: #3fb5a3;--color-gold: #c9a55c;--color-cat-city: #3fb5a3;--color-cat-project: #c9a55c;--color-cat-moment: #5b9bc4;--color-cat-timeline: #c05b4d}:root[data-theme=light]{color-scheme:light;--color-paper: #f4efe4;--color-panel: #fbf8f0;--color-ink: #26241f;--color-muted: #6d685c;--color-grid: #ddd5c2;--color-accent: #b34a3c;--color-jade: #1d7d6f;--color-gold: #9a7b3f;--color-cat-city: #3fb5a3;--color-cat-project: #c9a55c;--color-cat-moment: #5b9bc4;--color-cat-timeline: #c05b4d}@layer base{html{background:var(--color-paper)}body{margin:0;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;background:var(--color-paper);color:var(--color-ink);font-family:var(--font-sans);font-size:15px;line-height:1.8;-webkit-font-smoothing:antialiased;transition:background-color .24s ease-out,color .24s ease-out}h1,h2,h3{font-family:var(--font-display);font-weight:900;letter-spacing:.01em}a{color:inherit}:focus-visible{outline:2px solid var(--color-jade);outline-offset:2px}::selection{background:color-mix(in srgb,var(--color-jade) 30%,transparent)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;animation:none!important}}}.texture-paper{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:0}.site-header{flex:none;border-bottom:1px solid var(--color-grid);background:color-mix(in srgb,var(--color-paper) 88%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);position:sticky;top:0;z-index:100}.header-inner{height:56px;max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.site-brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:inherit;min-width:0}.site-title{flex:none;white-space:nowrap;font-family:var(--font-display);font-weight:900;font-size:20px;letter-spacing:.06em;text-decoration:none}.site-main{flex:1;position:relative;z-index:1;display:flex;flex-direction:column}.site-footer{flex:none;position:relative;z-index:1;border-top:1px solid var(--color-grid)}.footer-inner{max-width:1200px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px}.theme-toggle{flex:none;display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 13px;border:1px solid var(--color-grid);border-radius:999px;background:none;color:var(--color-muted);font-size:12px;font-family:var(--font-sans);letter-spacing:.05em;white-space:nowrap;cursor:pointer;transition:border-color .12s ease-out,color .12s ease-out}.theme-toggle:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--color-ink);opacity:.7}.theme-toggle:hover{border-color:var(--color-jade);color:var(--color-ink)}.site-nav{display:flex;align-items:center;gap:2px;overflow-x:auto;max-width:100%}.nav-item{display:flex;align-items:center;padding:5px 10px 3px;font-size:13px;color:var(--color-muted);text-decoration:none;border-bottom:3px solid transparent;white-space:nowrap;transition:color .12s ease-out}.nav-item:hover{color:var(--color-ink)}.nav-item.active{color:var(--color-ink);font-weight:700;border-bottom-color:var(--color-accent)}.note-mono{font-family:var(--font-mono);font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--color-muted)}.rule-hairline{height:0;border:0;border-top:1px solid var(--color-grid)}.grid-empty{background-image:linear-gradient(var(--color-grid) 1px,transparent 1px),linear-gradient(90deg,var(--color-grid) 1px,transparent 1px);background-size:48px 48px}.btn{display:inline-block;padding:10px 22px;border:1px solid var(--color-ink);border-radius:4px;background:transparent;color:var(--color-ink);font-size:15px;font-weight:700;text-decoration:none;cursor:pointer;transition:border-color .12s ease-out,box-shadow .12s ease-out,background-color .12s ease-out,color .12s ease-out}.btn:hover{border-color:var(--color-jade);box-shadow:0 0 0 1px color-mix(in srgb,var(--color-jade) 35%,transparent),0 6px 18px -8px color-mix(in srgb,var(--color-jade) 28%,transparent)}.btn-primary{background:var(--color-ink);color:var(--color-paper)}.btn-primary:hover{background:var(--color-ink);color:var(--color-paper);border-color:var(--color-jade)}