:root{--tree-gold:#e3b64b;--tree-bg:#071517;--tree-panel:#102326;--tree-cream:#ead9ab;--tree-red:#762d27;--tree-green:#4f9d45}
.research-v2{min-height:100vh;background:#071013 radial-gradient(circle at 50% 0,rgba(41,91,83,.22),transparent 45%);color:#e9edf0}
.research-v2 .navbar{position:sticky;top:0;z-index:1000;background:rgba(7,12,16,.96);backdrop-filter:blur(12px)}
.academy-head{max-width:1500px;margin:auto;padding:34px 28px 18px;display:flex;align-items:end;justify-content:space-between;gap:24px}
.academy-title small{display:block;color:var(--tree-gold);letter-spacing:.25em;font-size:.7rem;font-weight:800}.academy-title h1{font-size:clamp(2rem,5vw,4rem);line-height:1;background:linear-gradient(#fff7d7,#d6a63b);background-clip:text;color:transparent}.academy-title p{max-width:720px;margin-top:12px;color:#9dafaf}
.academy-progress{min-width:230px;padding:15px;background:rgba(16,35,38,.82);border:1px solid rgba(227,182,75,.3);border-radius:10px}.academy-progress div{display:flex;justify-content:space-between;font-size:.78rem}.academy-progress strong{color:var(--tree-gold)}.progress-bar{height:7px;margin-top:9px;background:#071012;border-radius:20px;overflow:hidden}.progress-bar i{display:block;width:18%;height:100%;background:linear-gradient(90deg,#699b3e,#d5b14a)}
.branch-carousel{max-width:1500px;margin:0 auto 20px;padding:10px 28px 18px;display:flex;gap:12px;overflow-x:auto;scrollbar-color:var(--tree-gold) #071012}.branch-tile{position:relative;min-width:190px;height:104px;padding:15px;text-align:left;color:#cad5d4;background:linear-gradient(145deg,#152b2d,#0c191b);border:1px solid #293f40;border-radius:10px;cursor:pointer;overflow:hidden;transition:.25s}.branch-tile:hover,.branch-tile.active{transform:translateY(-3px);border-color:var(--tree-gold);box-shadow:0 8px 25px rgba(227,182,75,.15)}.branch-tile i{font-size:1.7rem;color:#6f8583}.branch-tile.active i{color:var(--tree-gold)}.branch-tile b{display:block;margin-top:9px;color:#fff}.branch-tile span{font-size:.67rem;color:#819291}.branch-tile.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--tree-gold)}
.tree-stage{position:relative;max-width:1500px;height:720px;margin:0 auto 55px;border-block:1px solid rgba(227,182,75,.25);background-color:#0b2021;background-image:linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px),radial-gradient(circle at 50% 20%,rgba(36,92,79,.45),transparent 55%);background-size:40px 40px,40px 40px,auto;box-shadow:inset 0 20px 70px rgba(0,0,0,.5);overflow:auto;cursor:grab;scrollbar-color:#9f7b2d #061012}.tree-stage.dragging{cursor:grabbing;user-select:none}.tree-stage[hidden]{display:none}.tree-stage:before{content:attr(data-title);position:sticky;top:0;left:0;display:block;z-index:30;padding:13px 20px;color:#f3df9f;font:700 1rem Georgia,serif;letter-spacing:.08em;background:linear-gradient(90deg,#5b2b20,#392019 65%,transparent);border-bottom:1px solid #a46e35}
.tech-tree{position:relative;width:1160px;min-height:2100px;margin:25px auto 90px;padding-top:10px}
.tech-level{position:relative;display:flex;justify-content:center;align-items:flex-start;gap:34px;min-height:180px;z-index:2}.tech-level.branch-3{gap:55px}.tech-level.branch-2{gap:80px}.tech-level.branch-2:before{content:"";position:absolute;top:136px;left:calc(50% - 110px);width:220px;border-top:3px dotted var(--tree-gold);z-index:0;pointer-events:none}.tech-level:after{content:"";position:absolute;left:50%;bottom:0;width:3px;height:55px;transform:translateX(-50%);background:repeating-linear-gradient(to bottom,var(--tree-gold) 0 5px,#634c1e 5px 9px);box-shadow:0 0 6px rgba(227,182,75,.45);z-index:0;pointer-events:none}.tech-level:last-child:after{display:none}.tech-level.branch-3:before{content:"";position:absolute;top:136px;left:calc(50% - 215px);width:430px;border-top:3px dotted var(--tree-gold);z-index:0;pointer-events:none}
.tech-node{position:relative;z-index:2;width:132px;min-height:142px;padding:7px 7px 24px;background:linear-gradient(100deg,#b99755,#f0dfac 12%,#e5d19a 82%,#9f7438);border:3px solid #754128;border-radius:7px 7px 14px 14px;box-shadow:0 8px 14px rgba(0,0,0,.5),inset 0 0 0 2px rgba(255,255,255,.22);color:#312313;text-align:center;cursor:pointer;transition:.2s}.tech-node:hover{transform:translateY(-5px) scale(1.03);filter:brightness(1.08);box-shadow:0 12px 22px rgba(0,0,0,.6),0 0 16px rgba(227,182,75,.3)}.tech-node .node-art{display:grid;place-items:center;height:72px;margin-bottom:7px;border:2px solid #7b4b28;background:radial-gradient(circle,#ed9b25,#8c2f20);color:#ffe187;font-size:2rem;text-shadow:0 2px 3px #000}.tech-node.green .node-art{background:radial-gradient(circle,#77d763,#226729)}.tech-node.hero .node-art{background:radial-gradient(circle,#875841,#2e1b19)}.tech-node.locked{filter:grayscale(1);opacity:.72}.tech-node.locked:hover{filter:grayscale(.7)}.tech-node b{display:block;font:700 .72rem/1.13 Georgia,serif}.node-level{position:absolute;left:12px;right:12px;bottom:5px;height:14px;color:white;background:#244d2a;border:1px solid #79ad57;border-radius:2px;font-size:.58rem;line-height:12px}.tech-node.locked .node-level{background:#353d3d;border-color:#707b7a}
.tree-hint{position:sticky;left:18px;bottom:18px;z-index:20;width:max-content;padding:8px 12px;color:#c2cfcc;background:rgba(4,11,13,.84);border:1px solid #344d4c;border-radius:7px;font-size:.73rem;pointer-events:none}
.research-modal[hidden]{display:none}.research-modal{position:fixed;inset:0;z-index:4000;display:grid;place-items:center;padding:20px;background:rgba(0,5,7,.78);backdrop-filter:blur(5px)}.modal-panel{width:min(760px,95vw);max-height:88vh;overflow:auto;background:linear-gradient(145deg,#172d2e,#091718);border:2px solid var(--tree-gold);border-radius:12px;box-shadow:0 30px 90px #000}.modal-head{display:flex;align-items:center;gap:16px;padding:18px 20px;background:linear-gradient(90deg,#5c2b20,#2d1a17);border-bottom:1px solid #9b6c39}.modal-icon{display:grid;place-items:center;width:55px;height:55px;color:#ffe28b;background:#b66320;border:2px solid #f2c066;border-radius:6px;font-size:1.5rem}.modal-head h2{flex:1;font:700 1.35rem Georgia,serif;color:#f6e4ae}.modal-close{width:38px;height:38px;border:1px solid #9b7040;border-radius:50%;color:#f5deb0;background:#351d17;font-size:1.1rem;cursor:pointer}.modal-tabs{display:flex;border-bottom:1px solid #30494a}.modal-tab{flex:1;padding:12px;color:#91a3a2;background:#0e2021;border:0;border-bottom:3px solid transparent;cursor:pointer}.modal-tab.active{color:#ffe096;border-color:var(--tree-gold);background:#14292a}.modal-body{padding:22px}.modal-pane[hidden]{display:none}.bonus-line{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px;margin-bottom:12px;background:#0b1a1b;border:1px solid #294243;border-radius:7px}.bonus-line strong{color:#8ed375}.level-table{width:100%;border-collapse:collapse;font-size:.82rem}.level-table th,.level-table td{padding:10px;border-bottom:1px solid #294243;text-align:left}.level-table th{color:var(--tree-gold)}.cost-pill{display:inline-flex;gap:6px;align-items:center;color:#f4cf67}.modal-note{color:#95a6a5;line-height:1.65}
@media(max-width:700px){.academy-head{align-items:stretch;flex-direction:column}.academy-progress{min-width:0}.tree-stage{height:650px}.research-v2 .navbar{position:static}.tech-tree{transform-origin:top center}.branch-carousel,.academy-head{padding-inline:14px}}
.data-pending{display:inline-block;padding:3px 7px;border:1px solid rgba(227,182,75,.3);border-radius:999px;color:#d8be78;background:rgba(227,182,75,.08);font-size:.68rem;white-space:nowrap}.level-table tbody tr:hover{background:rgba(227,182,75,.05)}