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14px;--text-xs: 12px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-6: 24px;--space-8: 32px;--space-12: 48px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 2px rgb(0 0 0 / .06);--shadow-md: 0 4px 16px rgb(0 0 0 / .1);--header-h: 60px;--sidebar-w: 240px;--toc-w: 220px;--content-w: 760px;--dur-fast: .15s;--dur-base: .2s;--dur-slow: .25s;--ease-out-soft: cubic-bezier(.2, .8, .2, 1)}:root[data-theme=dark]{color-scheme:dark;--color-bg: #0f1115;--color-bg-subtle: #161920;--color-surface: #1c1f27;--color-border: #2a2e38;--color-text: #e6e8eb;--color-text-muted: #9198a1;--color-primary: #60a5fa;--color-primary-subtle: #1e2a44;--color-on-primary: #0f1115;--color-success: #4ade80;--color-danger: #f87171;--color-warning: #fbbf24;--color-dim: rgb(0 0 0 / .6);--shadow-sm: 0 1px 2px rgb(0 0 0 / .4);--shadow-md: 0 4px 16px rgb(0 0 0 / .5)}@media(max-width:1199px){:root{--sidebar-w: 220px}}@media(max-width:767px){:root{--header-h: 56px;--text-display: 26px;--text-h1: 22px;--text-h2: 20px}}@media(prefers-reduced-motion:reduce){:root{--dur-fast: 0ms;--dur-base: 0ms;--dur-slow: 0ms}}*,*:before,*:after{box-sizing:border-box}html{scroll-padding-top:calc(var(--header-h) + 24px)}body{margin:0;background:var(--color-bg);color:var(--color-text);font-family:var(--font-sans);font-size:var(--text-body);line-height:1.75;-webkit-font-smoothing:antialiased;transition:background var(--dur-base),color var(--dur-base)}body.scroll-locked{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit}img{max-width:100%}h1,h2,h3,p{margin:0}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:var(--radius-sm)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.skip-link{position:fixed;top:-60px;left:var(--space-4);z-index:100;padding:var(--space-2) var(--space-4);border-radius:var(--radius-md);background:var(--color-primary);color:var(--color-on-primary);font-size:var(--text-sm);font-weight:600;transition:top var(--dur-fast)}.skip-link:focus{top:var(--space-2)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:38px;padding:0 var(--space-4);border:1px solid transparent;border-radius:var(--radius-md);background:none;font-size:var(--text-sm);font-weight:600;line-height:1;white-space:nowrap;cursor:pointer;transition:background var(--dur-fast),border-color var(--dur-fast),color var(--dur-fast),opacity var(--dur-fast)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:var(--color-on-primary)}.btn-primary:not(:disabled):hover{background:color-mix(in srgb,var(--color-primary) 85%,#000)}.btn-outline{border-color:var(--color-border);background:var(--color-surface)}.btn-outline:not(:disabled):hover{background:var(--color-bg-subtle)}.btn-ghost{color:var(--color-text-muted)}.btn-ghost:not(:disabled):hover{background:var(--color-bg-subtle);color:var(--color-text)}.btn-danger{background:var(--color-danger);color:#fff}.btn-danger:not(:disabled):hover{background:color-mix(in srgb,var(--color-danger) 85%,#000)}.btn-sm{min-height:30px;padding:0 var(--space-3);font-size:var(--text-xs)}.icon-btn{display:inline-grid;place-items:center;width:36px;height:36px;padding:0;border:none;border-radius:var(--radius-md);background:none;color:var(--color-text-muted);cursor:pointer;transition:background var(--dur-fast),color var(--dur-fast)}.icon-btn:hover{background:var(--color-bg-subtle);color:var(--color-text)}.icon-btn-sm{width:28px;height:28px}.icon-btn.danger:hover{color:var(--color-danger)}@media(pointer:coarse){.icon-btn{width:44px;height:44px}}.spinner{width:14px;height:14px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.field{display:flex;flex-direction:column;gap:var(--space-1)}.field-label{font-size:var(--text-sm);font-weight:600}.field-label .required{color:var(--color-danger);margin-left:2px}.field-hint{font-size:var(--text-xs);color:var(--color-text-muted)}.field-error{font-size:var(--text-xs);color:var(--color-danger)}.input,.select,.textarea{width:100%;min-height:40px;padding:var(--space-2) var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);color:var(--color-text);font:inherit;font-size:var(--text-sm);line-height:1.5;transition:border-color var(--dur-fast),box-shadow var(--dur-fast)}.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-subtle)}.input[aria-invalid=true],.select[aria-invalid=true]{border-color:var(--color-danger)}.radio-group{display:flex;gap:var(--space-4);font-size:var(--text-sm);min-height:40px;align-items:center}.radio-group label{display:inline-flex;align-items:center;gap:var(--space-1);cursor:pointer}.switch{position:relative;width:40px;height:22px;padding:0;border:none;border-radius:999px;background:var(--color-border);cursor:pointer;transition:background var(--dur-fast)}.switch:after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:var(--shadow-sm);transition:transform var(--dur-fast)}.switch[aria-checked=true]{background:var(--color-success)}.switch[aria-checked=true]:after{transform:translate(18px)}.switch:disabled{opacity:.6;cursor:wait}.badge{display:inline-flex;align-items:center;padding:1px var(--space-2);border-radius:var(--radius-sm);font-size:var(--text-xs);font-weight:500;line-height:1.6;white-space:nowrap}.badge-muted{background:var(--color-bg-subtle);color:var(--color-text-muted);border:1px solid var(--color-border)}.badge-warning{background:color-mix(in srgb,var(--color-warning) 14%,transparent);color:var(--color-warning)}.badge-success{background:color-mix(in srgb,var(--color-success) 14%,transparent);color:var(--color-success)}.tag-chip{position:relative;display:inline-flex;align-items:center;padding:2px var(--space-2);border-radius:var(--radius-sm);background:var(--color-bg-subtle);color:var(--color-text-muted);font-size:var(--text-xs);font-weight:500;line-height:1.6;transition:color var(--dur-fast),background var(--dur-fast)}a.tag-chip:hover{color:var(--color-primary);background:var(--color-primary-subtle)}.tag-list{display:flex;flex-wrap:wrap;gap:var(--space-1);padding:0;margin:0;list-style:none}.skeleton{display:block;border-radius:var(--radius-sm);background:linear-gradient(90deg,var(--color-bg-subtle) 25%,var(--color-border) 50%,var(--color-bg-subtle) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media(prefers-reduced-motion:reduce){.skeleton{animation:none}}.state-box{display:flex;flex-direction:column;align-items:center;gap:var(--space-3);padding:var(--space-12) var(--space-4);text-align:center;color:var(--color-text-muted);font-size:var(--text-sm)}.state-box svg{color:var(--color-text-muted);opacity:.7}.state-box.error{color:var(--color-danger)}.fade-in{animation:fadeIn var(--dur-base) ease-out both}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}