*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--text-primary:#1a1a1a;--text-secondary:#999;--text-disabled:#d0d0d0;--border-default:#e5e5e5;--bg-warm:#fafaf8;--bg-surface:#fff;--hl-who:#2563eb;--hl-what:#059669;--hl-when:#d97706;--hl-where:#7c3aed;--hl-why:#e11d48;--hl-how:#ea580c}body{background:var(--bg-warm);color:var(--text-primary);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Inter,PingFang SC,sans-serif;line-height:1.6}.home-page{background:var(--bg-warm);justify-content:center;align-items:center;min-height:100vh;display:flex}.home-col{flex-direction:column;align-items:center;gap:0;width:520px;display:flex}.home-logo{font-size:18px;font-weight:400}.home-sub{color:var(--text-secondary);margin-top:4px;font-size:14px}.home-spacer{height:16px}.home-input{border:1px solid var(--border-default);background:var(--bg-surface);outline:none;width:100%;height:56px;padding:0 20px;font-family:inherit;font-size:16px}.home-input:focus{border-color:var(--text-primary)}.home-input::placeholder{color:var(--text-secondary)}.home-pref{width:100%;color:var(--text-secondary);cursor:pointer;padding:12px 0 0;font-size:14px}.home-pref-textarea{border:1px solid var(--border-default);resize:vertical;background:var(--bg-surface);outline:none;width:100%;min-height:60px;margin-top:8px;padding:12px;font-family:inherit;font-size:14px;display:none}.home-pref-textarea:focus{border-color:var(--text-primary)}.home-pref.open .home-pref-textarea{display:block}.home-pref-hint{color:#ccc;margin-top:4px;font-size:12px;display:none}.home-pref.open .home-pref-hint{display:block}.home-btn{background:var(--text-primary);color:#fff;cursor:pointer;border:none;justify-content:center;align-items:center;width:100%;height:48px;margin-top:16px;font-family:inherit;font-size:16px;display:flex}.home-btn:hover{background:#333}.home-btn:disabled{cursor:not-allowed;background:#666}.home-examples{color:#ccc;margin-top:32px;font-size:13px}.article-page{background:var(--bg-warm);min-height:100vh}.topbar{background:var(--bg-warm);border-bottom:1px solid var(--border-default);z-index:100;position:sticky;top:0}.topbar-row1{align-items:center;gap:16px;height:48px;padding:0 32px;display:flex}.topbar-back{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;font-family:inherit;font-size:14px}.topbar-back:hover{color:var(--text-primary)}.topbar-progress{background:var(--border-default);width:200px;height:2px;position:relative;overflow:hidden}.topbar-progress-bar{background:var(--text-primary);width:40%;height:100%;animation:1.5s ease-in-out infinite progress-indeterminate}@keyframes progress-indeterminate{0%{transform:translate(-100%)}to{transform:translate(350%)}}.topbar-spacer{flex:1}.topbar-row2{align-items:center;gap:16px;height:32px;padding:0 32px;display:flex;overflow-x:auto}.chapter-chip{cursor:pointer;white-space:nowrap;color:var(--text-primary);background:0 0;border:none;border-bottom:2px solid #0000;padding-bottom:4px;font-family:inherit;font-size:13px}.chapter-chip.current{border-bottom-color:var(--text-primary);font-weight:600}.article-body{max-width:680px;margin:0 auto;padding:32px 0 64px}.article-body h2{align-items:center;gap:12px;margin:48px 0 0;font-size:22px;font-weight:600;display:flex}.article-body h3{margin:24px 0 12px;font-size:18px;font-weight:600}.article-body p{margin:12px 0 0;font-size:16px;line-height:1.8}.w1h-toggle{color:var(--text-secondary);cursor:pointer;white-space:nowrap;background:0 0;border:none;font-family:inherit;font-size:14px;font-weight:400;display:inline}.w1h-toggle:hover{color:var(--text-primary)}.hl-who{background:#2563eb26;padding:0 2px}.hl-what{background:#05966926;padding:0 2px}.hl-when{background:#d9770626;padding:0 2px}.hl-where{background:#7c3aed26;padding:0 2px}.hl-why{background:#e1114826;padding:0 2px}.hl-how{background:#ea580c26;padding:0 2px}.w1h-card{border:1px solid var(--border-default);background:var(--bg-surface);grid-template-columns:1fr 1fr 1fr;margin:16px 0 24px;display:grid;position:relative}.w1h-cell{border-right:1px solid var(--border-default);border-bottom:1px solid var(--border-default);padding:12px 16px 12px 20px;position:relative}.w1h-cell:nth-child(3n){border-right:none}.w1h-cell:nth-child(n+4){border-bottom:none}.w1h-cell:before{content:"";width:3px;position:absolute;top:0;bottom:0;left:0}.w1h-cell.cell-who:before{background:var(--hl-who)}.w1h-cell.cell-what:before{background:var(--hl-what)}.w1h-cell.cell-when:before{background:var(--hl-when)}.w1h-cell.cell-where:before{background:var(--hl-where)}.w1h-cell.cell-why:before{background:var(--hl-why)}.w1h-cell.cell-how:before{background:var(--hl-how)}.w1h-label{margin-bottom:4px;font-size:11px;font-weight:600}.cell-who .w1h-label{color:var(--hl-who)}.cell-what .w1h-label{color:var(--hl-what)}.cell-when .w1h-label{color:var(--hl-when)}.cell-where .w1h-label{color:var(--hl-where)}.cell-why .w1h-label{color:var(--hl-why)}.cell-how .w1h-label{color:var(--hl-how)}.w1h-text{color:var(--text-primary);font-size:14px;line-height:1.6}.w1h-close{z-index:1;color:var(--text-secondary);cursor:pointer;background:0 0;border:none;padding:4px;font-size:14px;line-height:1;position:absolute;top:8px;right:8px}.w1h-close:hover{color:var(--text-primary)}.skeleton-title{color:var(--text-disabled)}.skeleton-bar{background:var(--border-default);height:14px;margin:8px 0}.end-divider{justify-content:center;align-items:center;gap:0;margin:32px 0;display:flex}.end-divider-dot{background:var(--text-primary);border-radius:50%;flex-shrink:0;width:4px;height:4px}.end-divider-line{background:var(--border-default);width:60px;height:1px}.resume-card{border:1px solid var(--border-default);background:var(--bg-surface);text-align:center;max-width:680px;margin:0 auto;padding:16px}.resume-title{color:var(--text-secondary);font-size:14px}.resume-link{color:var(--text-primary);cursor:pointer;text-underline-offset:4px;background:0 0;border:none;margin-top:8px;font-family:inherit;font-size:14px;text-decoration:underline}.article-loading{text-align:center;padding:80px 0 40px}.mini-progress{background:var(--border-default);width:240px;height:2px;margin:0 auto 16px;overflow:hidden}.mini-progress-bar{background:var(--text-primary);width:25%;height:100%;animation:1.5s ease-in-out infinite progress-indeterminate}.article-loading-text{color:var(--text-secondary);font-size:14px}.stream-cursor:after{content:"▏";animation:1s step-end infinite blink}@keyframes blink{50%{opacity:0}}.error-card{border:1px solid var(--border-default);background:var(--bg-warm);text-align:center;flex-direction:column;justify-content:center;align-items:center;width:420px;margin:80px auto;padding:48px 32px;display:flex}.error-dot{background:#ccc;border-radius:50%;width:4px;height:4px;margin-bottom:24px}.error-title{margin-bottom:12px;font-size:18px}.error-desc{color:var(--text-secondary);max-width:360px;margin-bottom:20px;font-size:14px;line-height:1.6}.error-link{cursor:pointer;text-underline-offset:4px;color:var(--text-primary);background:0 0;border:none;font-family:inherit;font-size:14px;text-decoration:underline}[hidden]{display:none!important}