.timeline-tree-page{min-height:72vh;padding-bottom:90px;background:#f7f7f4;color:#1e2928}
.timeline-tree-hero{max-width:1440px;margin:0 auto;padding:140px 34px 42px}
.timeline-tree-hero p{margin:0;color:#a67837;font:600 11px/1.5 Arial,sans-serif;letter-spacing:.18em}
.timeline-tree-hero h1{margin:13px 0 0;font-size:42px;font-weight:500;letter-spacing:0}
.timeline-tree{max-width:1480px;margin:0 auto;padding:0 34px}
.timeline-tree__category-nav{display:flex;align-items:center;border-top:1px solid #d5d9d3}
.timeline-tree__category-scroll{flex:1;min-width:0;overflow-x:auto;scrollbar-width:none}
.timeline-tree__category-scroll::-webkit-scrollbar{display:none}
.timeline-tree__category-list{display:flex;justify-content:center;min-width:max-content;margin:0 auto;padding:0 30px;list-style:none}
.timeline-tree__category-list li{position:relative;width:156px;flex:0 0 156px;text-align:center}
.timeline-tree__category-list li::before{content:'';position:absolute;top:-6px;left:50%;width:11px;height:11px;transform:translateX(-50%);border:2px solid #f7f7f4;border-radius:50%;background:#b5bdb6}
.timeline-tree__category-list button{width:100%;padding:22px 8px 18px;border:0;background:transparent;color:#84908a;font-size:15px;cursor:pointer}
.timeline-tree__category-list button.is-active{color:#b57d29;font-weight:700}
.timeline-tree__category-list button.is-active::before{content:'';position:absolute;top:-2px;left:50%;width:15px;height:15px;transform:translateX(-50%);border-radius:50%;background:#e5b84e;box-shadow:0 0 0 4px #f7f7f4}
.timeline-tree__category-arrow{position:relative;z-index:4;width:42px;height:42px;flex:0 0 42px;border:0;background:#f7f7f4;color:#929a92;font-size:36px;line-height:1;cursor:pointer}
.timeline-tree__category-arrow:hover,.timeline-tree__stage-arrow:hover{color:#a36e22}
.timeline-tree__category-panel[hidden]{display:none}
.timeline-tree__stage{position:relative;height:600px;margin:8px -8px 0;overflow:visible}
.timeline-tree__slide{position:absolute;inset:0;pointer-events:none}
.timeline-tree__main-card,.timeline-tree__side-card{position:absolute;top:22px}
.timeline-tree__main-card{left:50%;z-index:3;width:min(980px,72%);height:500px;padding:0;transform:translateX(-50%);border:1px solid #d9bf71;background:#fff;box-shadow:0 12px 30px rgba(35,45,42,.09);opacity:0;transition:opacity .35s ease;overflow:hidden}
.timeline-tree__slide.is-center{z-index:3;pointer-events:auto}
.timeline-tree__slide.is-center .timeline-tree__main-card{opacity:1}
.timeline-tree__main-image{display:block;height:285px;background:#edf0ec}
.timeline-tree__main-image img{display:block;width:100%;height:100%;object-fit:cover}
.timeline-tree__main-copy{padding:24px 42px 28px;text-align:center}
.timeline-tree__main-card h2{margin:0 0 12px;color:#c48a27;font-size:21px;font-weight:700;text-align:center}
.timeline-tree__main-copy p{max-width:760px;margin:0 auto;color:#4e5955;font-size:15px;line-height:1.85;display:-webkit-box;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:3}
.timeline-tree__detail-link{display:inline-flex;align-items:center;gap:8px;margin-top:20px;color:#a36e22;font-size:14px;text-decoration:none}
.timeline-tree__detail-link:hover{text-decoration:underline}
.timeline-tree__content{max-height:440px;padding-right:10px;overflow-y:auto;color:#4e5955;font-size:15px;line-height:1.85;word-break:break-word;scrollbar-color:#c6cdc5 transparent;scrollbar-width:thin}
.timeline-tree__content>*:first-child{margin-top:0}
.timeline-tree__content>*:last-child{margin-bottom:0}
.timeline-tree__content img{display:block;max-width:100%;max-height:310px;height:auto;margin:20px auto}
.timeline-tree__content h1,.timeline-tree__content h2,.timeline-tree__content h3{color:#202c2a;font-weight:500;line-height:1.35}
.timeline-tree__side-card{left:50%;z-index:1;width:min(320px,23%);height:405px;overflow:hidden;background:#31413f;color:#fff;cursor:pointer;opacity:0;filter:saturate(.7);transition:opacity .35s ease,filter .35s ease}
.timeline-tree__side-card img,.timeline-tree__side-placeholder{display:block;width:100%;height:100%;object-fit:cover}
.timeline-tree__side-placeholder{background:#31413f}
.timeline-tree__side-copy{position:absolute;inset:43% 0 0;display:flex;flex-direction:column;justify-content:flex-end;padding:24px 20px;background:linear-gradient(transparent,rgba(18,31,30,.9))}
.timeline-tree__side-copy strong{margin-bottom:8px;font-size:19px}
.timeline-tree__side-copy span{display:-webkit-box;overflow:hidden;font-size:12px;line-height:1.65;-webkit-box-orient:vertical;-webkit-line-clamp:3}
.timeline-tree__slide.is-left,.timeline-tree__slide.is-right{z-index:2;pointer-events:auto}
.timeline-tree__slide.is-left .timeline-tree__side-card{transform:translateX(-197%) scale(.9);opacity:.55}
.timeline-tree__slide.is-right .timeline-tree__side-card{transform:translateX(97%) scale(.9);opacity:.55}
.timeline-tree__slide.is-left .timeline-tree__side-card:hover,.timeline-tree__slide.is-right .timeline-tree__side-card:hover{opacity:.82;filter:none}
.timeline-tree__slide.is-hidden{visibility:hidden}
.timeline-tree__stage-arrow{position:absolute;top:50%;z-index:6;width:52px;height:74px;transform:translateY(-50%);border:0;background:transparent;color:#9da69f;font-size:42px;cursor:pointer}
.timeline-tree__stage-arrow--prev{left:0}
.timeline-tree__stage-arrow--next{right:0}
.timeline-tree__empty{padding:80px 20px;text-align:center;color:#68736d}
@media(max-width:820px){
    .timeline-tree{padding:0 16px}
    .timeline-tree-hero{padding:82px 20px 36px}
    .timeline-tree-hero h1{font-size:34px}
    .timeline-tree__category-list{justify-content:flex-start;padding:0 8px}
    .timeline-tree__category-list li{width:112px;flex-basis:112px}
    .timeline-tree__category-list button{padding:20px 4px 17px;font-size:14px}
    .timeline-tree__stage{height:466px;margin:4px 0;overflow:visible}
    .timeline-tree__main-card{top:14px;width:calc(100% - 56px);height:430px}
    .timeline-tree__main-image{height:220px}
    .timeline-tree__main-copy{padding:20px 18px 24px}
    .timeline-tree__main-card h2{font-size:18px}
    .timeline-tree__main-copy p{font-size:14px;line-height:1.7;-webkit-line-clamp:4}
    .timeline-tree__side-card{display:none}
    .timeline-tree__stage-arrow{top:50%;z-index:20;width:42px;height:48px;border:0;border-radius:0;background:rgba(24,36,34,.52);box-shadow:none;color:#fff;font-size:27px;font-weight:300;line-height:48px;text-align:center;opacity:.9;transition:background .2s ease,opacity .2s ease}
    .timeline-tree__stage-arrow:hover,.timeline-tree__stage-arrow:focus-visible{background:rgba(24,36,34,.78);color:#fff;opacity:1;outline:none}
    .timeline-tree__stage-arrow--prev{left:0}
    .timeline-tree__stage-arrow--next{right:0}
}