.series-index-header{padding:2.5rem 0 2rem;margin-bottom:0}.series-index-title{font-size:var(--font-xl);font-weight:var(--fw-bold);letter-spacing:-.02em;margin:0 0 .5rem;color:var(--text-color);line-height:1.3}.series-index-sub{font-size:var(--font-sm);color:var(--text-tertiary);margin:0}.series-archive-list{display:flex;flex-direction:column}.series-archive-item{position:relative;display:block;padding:1.5rem 0 1.5rem 1.5rem;text-decoration:none;color:inherit}.series-archive-item::before{content:"";position:absolute;left:0;top:1.5rem;bottom:1.5rem;width:2px;background:var(--border);border-radius:1px;transition:background var(--t-fast)}.series-archive-item:hover::before{background:var(--primary-color)}.series-archive-body{display:flex;flex-direction:column;gap:.4rem}.series-archive-name{font-size:var(--font-md);font-weight:var(--fw-bold);color:var(--text-color);margin:0;line-height:1.35;letter-spacing:-.01em}.series-archive-desc{font-size:var(--font-base);color:var(--text-secondary);margin:0;line-height:1.6;max-width:560px}.series-archive-meta{display:flex;gap:.6rem;font-size:var(--font-sm);color:var(--text-tertiary);margin-top:.2rem}.series-archive-meta .meta-sep{opacity:.4}.series-header{padding:2.5rem 0 2rem;margin-bottom:0}.series-header h1{font-size:var(--font-xl);font-weight:var(--fw-bold);letter-spacing:-.02em;margin:0 0 .5rem;color:var(--text-color);line-height:1.3}.series-description{font-size:var(--font-sm);color:var(--text-secondary);line-height:1.65;margin:0 0 .5rem;max-width:640px}.series-meta-count{font-size:var(--font-sm);color:var(--text-tertiary);margin:0}.series-timeline{position:relative;padding-left:1.25rem;margin-top:2rem}.series-timeline::before{content:"";position:absolute;left:0;top:.5rem;bottom:.5rem;width:2px;background:var(--border);border-radius:1px}.series-timeline-item{position:relative;display:flex;align-items:flex-start;gap:1.25rem;padding:1.5rem 0;text-decoration:none;color:inherit}.series-timeline-dot{position:absolute;left:-1.25rem;top:2rem;width:8px;height:8px;border-radius:50%;background:var(--border);border:2px solid var(--bg);transform:translateX(-3px);transition:background var(--t-fast)}.series-timeline-item:hover .series-timeline-dot{background:var(--primary-color)}.series-timeline-content{min-width:0;display:flex;flex-direction:column;gap:.4rem;flex:1}.series-timeline-main{display:flex;flex-direction:column;gap:.2rem}.series-timeline-order{font-size:var(--font-sm);font-weight:var(--fw-semibold);color:var(--text-tertiary);font-variant-numeric:tabular-nums}.series-timeline-title{font-size:var(--font-md);font-weight:var(--fw-bold);color:var(--text-color);margin:0;line-height:1.35;letter-spacing:-.01em}.series-timeline-meta{display:flex;gap:.6rem;font-size:var(--font-sm);color:var(--text-tertiary)}.series-timeline-meta .meta-sep{opacity:.4}@media(max-width:640px){.series-archive-item{padding-left:1.25rem}.series-timeline{padding-left:1rem}.series-timeline-item{gap:1rem}.series-timeline-dot{left:-1rem;width:6px;height:6px;transform:translateX(-2px)}}