:root{color-scheme:light;--bg: #f4f6f9;--surface: #ffffff;--text: #1a1a2e;--muted: #6b7280;--line: #e5e7eb;--primary: #2563eb;--primary-dark: #1d4ed8;--primary-light: #eff6ff;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--shadow-md: 0 4px 16px rgba(0, 0, 0, .08);--sidebar-width: 240px;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6}body.has-floating-ad{padding-bottom:88px}body.menu-open{overflow:hidden}body.menu-open .floating-ad{display:none}a{color:inherit;text-decoration:none}p{color:var(--muted);line-height:1.75}.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}.container{width:min(1100px,calc(100% - 32px));margin:0 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a:hover{background:var(--primary-light);color:var(--primary-dark)}.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;padding:8px;border:1px solid var(--line);border-radius:8px;background:var(--surface);cursor:pointer}.nav-toggle__bar{display:block;height:2px;background:var(--text);border-radius:2px}.mobile-menu[hidden]{display:none!important}.mobile-menu{position:fixed;inset:0;z-index:200;background:#0f172a2e}.mobile-menu__panel{position:absolute;top:62px;right:12px;left:auto;width:min(196px,calc(100vw - 24px));height:auto;max-height:min(280px,calc(100vh - 72px));background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 32px #0f172a1f;overflow-y:auto}.mobile-menu__links{display:flex;flex-direction:column;padding:4px}.mobile-menu__links a{display:block;padding:10px 14px;border-radius:8px;color:var(--text);font-size:.88rem;font-weight:500;line-height:1.4}.mobile-menu__links a:hover,.mobile-menu__links 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