/* Project Nebula · Light Cosmic Notebook — single source of visual tokens */
:root {
 --paper:#F7F4EB; --paper-side:#F5F0E7; --surface:#FFFCF6;
 --ink:#292824; --muted:#6E6962; --accent:#A74736; --accent-soft:#F4E7DD;
 --ochre:#986846; --gold:#B2995D; --line:#E3DACC;
 --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
 --font-heading:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
 --font-mono:"IBM Plex Mono",ui-monospace,monospace;
 --text-sm:.875rem; --text-base:1rem; --text-lg:1.25rem;
 --space-1:.5rem;--space-2:1rem;--space-3:1.5rem;--space-4:2rem;--space-5:3rem;--space-6:5rem;
 --sidebar-width:272px;--content-width:1200px;--drawer-width:720px;--radius:12px;--ease:220ms ease;
}