.tl-hero{min-height:65vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:8rem 2rem 4rem;position:relative;z-index:1}.tl-hero-glow{position:absolute;top:10%;left:50%;transform:translateX(-50%);width:500px;height:500px;background:radial-gradient(circle,rgba(0,230,138,.05) 0%,transparent 60%);pointer-events:none}.tl-hero-label{font-family:'IBM Plex Mono',monospace;font-size:.6rem;text-transform:uppercase;letter-spacing:.35em;color:var(--neon);margin-bottom:2rem;position:relative;z-index:1}.tl-hero-label:before{content:'// ';opacity:.4}.tl-hero-title{font-family:'DM Serif Display',serif;font-size:clamp(1.8rem,4.5vw,3rem);font-weight:400;line-height:1.15;max-width:800px;margin-bottom:1.5rem;position:relative;z-index:1}.tl-hero-title em{font-style:italic;color:var(--neon)}.tl-hero-sub{font-size:1.05rem;color:var(--text-2);max-width:620px;line-height:1.85;font-weight:300;margin-bottom:2.5rem;position:relative;z-index:1}.tl-hero-eras{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;position:relative;z-index:1}.tl-era-btn{padding:.45rem .9rem;background:0 0;border:1px solid var(--border);color:var(--text-3);font-family:'IBM Plex Mono',monospace;font-size:.52rem;text-transform:uppercase;letter-spacing:.1em;cursor:pointer;transition:all .3s}.tl-era-btn:hover{border-color:var(--text-2);color:var(--text-2)}.tl-era-btn.active{border-color:var(--neon);color:var(--neon);background:rgba(0,230,138,.05)}.tl-content{max-width:900px;margin:0 auto;padding:2rem 2rem 4rem;position:relative;z-index:1}.tl-line{position:absolute;top:0;bottom:0;left:50%;width:1px;background:linear-gradient(180deg,transparent,var(--border-neon) 5%,var(--border-neon) 95%,transparent);transform:translateX(-50%);z-index:0}.tl-item{position:relative;display:flex;margin-bottom:2rem;opacity:1;transition:opacity .4s,transform .4s}.tl-item.hidden{opacity:0;height:0;margin:0;overflow:hidden;pointer-events:none}.tl-item:nth-child(odd){justify-content:flex-start;padding-right:calc(50% + 2rem)}.tl-item:nth-child(even){justify-content:flex-end;padding-left:calc(50% + 2rem)}.tl-marker{position:absolute;left:50%;top:1.5rem;width:10px;height:10px;background:var(--surface);border:1.5px solid var(--neon-dim);border-radius:50%;transform:translateX(-50%);z-index:2;transition:all .3s}.tl-marker-major{width:14px;height:14px;background:var(--neon);border-color:var(--neon);box-shadow:0 0 12px rgba(0,230,138,.4)}.tl-item:hover .tl-marker{border-color:var(--neon);box-shadow:0 0 10px rgba(0,230,138,.3);transform:translateX(-50%) scale(1.3)}.tl-card{background:var(--surface);border:1px solid var(--border);padding:1.5rem 1.8rem;position:relative;transition:all .4s cubic-bezier(.22,1,.36,1);width:100%}.tl-card:hover{border-color:rgba(255,255,255,.08);transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,0,0,.3)}.tl-card-major{border-left:2px solid var(--neon)}.tl-year{display:block;font-family:'DM Serif Display',serif;font-size:1.6rem;font-weight:400;color:var(--neon);opacity:.25;margin-bottom:.2rem}.tl-card-major .tl-year{opacity:.5}.tl-era-tag{display:inline-block;font-family:'IBM Plex Mono',monospace;font-size:.45rem;text-transform:uppercase;letter-spacing:.15em;padding:.15rem .5rem;margin-bottom:.8rem;border:1px solid var(--border)}.tl-era-foundations{color:var(--amber);border-color:rgba(240,160,48,.25)}.tl-era-clinical{color:var(--violet);border-color:rgba(156,92,240,.25)}.tl-era-experimental{color:var(--rose);border-color:rgba(232,64,96,.25)}.tl-era-modern{color:var(--cyan);border-color:rgba(0,188,212,.25)}.tl-era-digital{color:var(--neon);border-color:rgba(0,230,138,.25)}.tl-card h3{font-family:'DM Serif Display',serif;font-size:1.1rem;font-weight:400;line-height:1.3;margin-bottom:.7rem}.tl-card h3 em{font-style:italic;color:var(--text-2)}.tl-card p{font-size:.85rem;color:var(--text-2);line-height:1.75;margin-bottom:.6rem;font-weight:300}.tl-tag{display:block;font-family:'IBM Plex Mono',monospace;font-size:.48rem;color:var(--text-3);text-transform:uppercase;letter-spacing:.1em;margin-top:.5rem}.tl-footer{max-width:800px;margin:0 auto;padding:0 2rem 4rem;position:relative;z-index:1}@media(max-width:768px){.tl-hero{min-height:55vh;padding:6rem 1.5rem 3rem}.tl-content{padding:1rem 1rem 3rem}.tl-line{left:1.2rem}.tl-item:nth-child(odd),.tl-item:nth-child(even){justify-content:flex-start;padding-left:3rem;padding-right:0}.tl-marker{left:1.2rem}.tl-card{padding:1.2rem}.tl-card h3{font-size:1rem}.tl-year{font-size:1.3rem}.tl-hero-eras{gap:.35rem}.tl-era-btn{font-size:.45rem;padding:.35rem .6rem}.tl-footer{padding:0 1.3rem 3rem}}