.openings-list-page{max-width:1200px;width:100%;margin:0 auto;padding:40px 16px 60px;position:relative;box-sizing:border-box}.openings-list-header{text-align:center;margin-bottom:48px}.openings-list-header h1{font-size:2.2rem;font-weight:700;color:var(--text-color, #fff);margin:0 0 12px}.openings-list-subtitle{font-size:1.05rem;color:#fff9;max-width:600px;margin:0 auto;line-height:1.6}.openings-grid{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;width:100%;box-sizing:border-box}.opening-card{display:flex;flex-direction:column;text-decoration:none;background:#ffffff0d;border:1px solid rgba(255,255,255,.18);overflow:hidden;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;width:320px;flex-shrink:0}@media(max-width:560px){.opening-card{width:calc(100vw - 32px)}}.opening-card-board-wrap{width:100%;overflow:hidden;background:var(--board-light, #f0d9b5);display:flex;align-items:center;justify-content:center}.opening-card-board-wrap coords{display:none!important}.opening-card-board-inner{flex-shrink:0}.opening-card:hover{transform:translateY(-2px);border-color:var(--accent-color, #bf5af2);box-shadow:0 4px 24px #bf5af233}.opening-card-content{display:flex;flex-direction:column;gap:10px;padding:18px 20px 16px;flex:1}.opening-card-tags{display:flex;gap:6px;flex-wrap:wrap}.opening-tag{display:inline-block;padding:2px 8px;border-radius:20px;font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.4px;color:#fff;opacity:.9}.opening-card-title{font-size:1.25rem;font-weight:700;color:var(--text-color, #fff);margin:0;line-height:1.3}.opening-card-intro{font-size:.9rem;color:#fff9;margin:0;line-height:1.5;flex:1}.opening-card-footer{display:flex;justify-content:space-between;align-items:center;margin-top:4px}.opening-card-variations{font-size:.8rem;color:#fff6}.opening-card-arrow{font-size:1.1rem;color:var(--accent-color, #bf5af2);transition:transform .2s ease}.opening-card:hover .opening-card-arrow{transform:translate(4px)}.opening-detail-page{max-width:1100px;margin:0 auto;padding:30px 16px 60px;position:relative;box-sizing:border-box;width:100%;overflow-x:hidden}.opening-breadcrumb{margin-bottom:20px}.opening-back-link{color:var(--accent-color, #bf5af2);text-decoration:none;font-size:.9rem;font-weight:500;transition:opacity .2s}.opening-back-link:hover{opacity:.75}.opening-title-row{display:flex;align-items:flex-start;gap:20px;flex-wrap:wrap;margin-bottom:16px}.opening-detail-title{font-size:2rem;font-weight:700;color:var(--text-color, #fff);margin:0;line-height:1.2}.opening-hero-tags{display:flex;flex-wrap:wrap;gap:8px;align-self:center}.opening-hero-tag{padding:4px 12px;border-radius:20px;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.4px;background:#ffffff14;color:#ffffff8c;border:1px solid rgba(255,255,255,.12)}.opening-related{display:flex;align-items:center;gap:10px;margin-top:-8px;margin-bottom:24px;flex-wrap:wrap}.opening-related-label{font-size:.85rem;color:#fff6}.opening-related-link{display:inline-block;padding:4px 14px;border-radius:20px;border:1px solid rgba(191,90,242,.4);color:var(--accent-color, #bf5af2);font-size:.85rem;font-weight:500;text-decoration:none;transition:background .15s ease,border-color .15s ease}.opening-related-link:hover{background:#bf5af21f;border-color:var(--accent-color, #bf5af2)}.opening-detail-intro{font-size:1.02rem;color:#ffffffc7;line-height:1.75;margin:0 0 36px;max-width:820px}.opening-board-section{display:flex;flex-direction:row;gap:36px;align-items:start;margin-bottom:52px}.opening-board-column{display:flex;flex-direction:column;gap:12px;width:480px;min-width:480px;flex-shrink:0;flex-grow:0}.opening-board-wrap{width:480px;height:480px;border-radius:4px;overflow:hidden;box-shadow:0 4px 24px #00000073;flex-shrink:0}.opening-board-inner{width:480px;height:480px}.opening-board-controls{display:flex;gap:8px;justify-content:center}.opening-ctrl-btn{width:44px;height:38px;border-radius:6px;border:1px solid rgba(255,255,255,.15);background:#ffffff0f;color:var(--text-color, #fff);font-size:1.15rem;cursor:pointer;transition:all .15s ease;display:flex;align-items:center;justify-content:center}.opening-ctrl-btn:hover:not(:disabled){background:#ffffff1f;border-color:var(--accent-color, #bf5af2)}.opening-ctrl-btn:disabled{opacity:.3;cursor:default}.opening-move-list{display:flex;flex-wrap:wrap;gap:2px 4px;align-items:center;font-size:.87rem;padding:10px 12px;background:#ffffff0a;border-radius:8px;min-height:40px;line-height:1.8}.opening-move-num{color:#ffffff4d;font-size:.78rem;margin-right:1px;-webkit-user-select:none;user-select:none}.opening-move-btn{padding:2px 5px;border-radius:4px;border:none;background:transparent;color:#ffffff80;font-size:.87rem;cursor:pointer;transition:all .1s ease;font-family:Courier New,Courier,monospace}.opening-move-btn:hover{background:#ffffff1a;color:#fff}.opening-move-btn.played{color:#ffffffbf}.opening-move-btn.current{background:var(--accent-color, #bf5af2);color:#fff;font-weight:700}.opening-tab-bar{display:flex;align-items:stretch;gap:0;margin-bottom:20px;background:#ffffff0a;border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:4px;overflow-x:auto;scrollbar-width:none;max-width:100%;box-sizing:border-box}.opening-tab-bar::-webkit-scrollbar{display:none}.opening-tab{flex:1;min-width:max-content;padding:8px 14px;border:none;border-radius:7px;background:transparent;color:#ffffff80;font-size:.85rem;font-weight:500;cursor:pointer;transition:all .15s ease;white-space:nowrap;text-align:center}.opening-tab:hover{background:#ffffff12;color:#ffffffd9}.opening-tab.active{background:var(--accent-color, #bf5af2);color:#fff;font-weight:600}.opening-commentary-panel{display:flex;flex-direction:column;gap:12px;padding:24px;flex:1 1 0;width:100%;min-width:0;max-width:100%;overflow-wrap:anywhere;background:#ffffff0a;border-radius:12px;border:1px solid rgba(255,255,255,.08);box-sizing:border-box;align-self:flex-start}.opening-commentary-label{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.6px;color:var(--accent-color, #bf5af2)}.opening-commentary-heading{font-size:1.05rem;font-weight:600;color:var(--text-color, #fff);line-height:1.3}.opening-commentary-move-badge{display:inline-block;font-family:Courier New,Courier,monospace;font-size:1.1rem;font-weight:700;color:var(--accent-color, #bf5af2);background:#bf5af21a;border:1px solid rgba(191,90,242,.25);border-radius:6px;padding:4px 12px;align-self:flex-start}.opening-commentary-text{font-size:.97rem;color:#ffffffd1;line-height:1.75;margin:0}.opening-commentary-hint{font-size:.82rem;color:#ffffff4d;font-style:italic;margin:auto 0 0}.opening-key-ideas-section{margin-bottom:48px}.opening-key-ideas-section h2{font-size:1.4rem;font-weight:600;color:var(--text-color, #fff);margin:0 0 20px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.1)}.opening-key-ideas-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}.opening-key-idea-item{display:flex;flex-direction:column;padding:14px 18px;background:#ffffff0a;border-radius:10px;border:1px solid rgba(255,255,255,.07);font-size:.97rem;color:#fffc;line-height:1.6;transition:border-color .15s ease}.opening-key-idea-item:hover{border-color:#bf5af240}.opening-key-idea-bullet{color:var(--accent-color, #bf5af2);font-size:1rem;flex-shrink:0;margin-top:1px}.opening-key-idea-row{display:flex;align-items:flex-start;gap:14px;width:100%}.opening-key-idea-text{flex:1;min-width:0}.idea-expand-btn{flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;background:#bf5af21f;border:1px solid rgba(191,90,242,.3);color:var(--accent-color, #bf5af2);border-radius:6px;padding:2px 10px;font-size:.7rem;transition:all .15s ease;margin-top:1px;pointer-events:none}.opening-key-idea-row:hover .idea-expand-btn,.idea-expand-btn.open{background:var(--accent-color, #bf5af2);color:#fff}.idea-board-panel{margin-top:14px;display:flex;justify-content:flex-start}.idea-board-wrap{width:260px;height:260px;border-radius:0;overflow:hidden;box-shadow:0 3px 16px #00000073;flex-shrink:0}.idea-board-inner{width:260px;height:260px}[dir=rtl] .opening-board-wrap,[dir=rtl] .idea-board-wrap{direction:ltr}[dir=rtl] .opening-board-section{flex-direction:row-reverse}[dir=rtl] .opening-card-arrow{display:inline-block;transform:scaleX(-1)}[dir=rtl] .opening-card:hover .opening-card-arrow{transform:scaleX(-1) translate(-4px)}[dir=rtl] .opening-key-idea-bullet{transform:scaleX(-1);display:inline-block}[dir=rtl] .opening-key-idea-row{flex-direction:row-reverse}[dir=rtl] .idea-board-panel{justify-content:flex-end}[dir=rtl] .opening-move-num{margin-right:0;margin-left:1px}[dir=rtl] .opening-related-link{unicode-bidi:plaintext}[dir=rtl] .opening-commentary-move-badge,[dir=rtl] .opening-move-btn,[dir=rtl] .opening-move-num,[dir=rtl] .opening-move-list{direction:ltr;unicode-bidi:isolate}[dir=rtl] .opening-tab-bar{direction:ltr}[dir=rtl] .opening-tab{direction:rtl}@media(max-width:560px){.openings-list-header h1{font-size:1.6rem}}@media(max-width:760px){.opening-board-section{flex-direction:column;gap:20px}.opening-board-column{width:100%;max-width:100%;min-width:0;flex-shrink:1}.opening-board-wrap,.opening-board-inner{width:100%!important;height:auto!important;aspect-ratio:1}.opening-tab-bar{padding:3px}.opening-tab{font-size:.78rem;padding:7px 10px;flex:none}.opening-detail-title{font-size:1.5rem}.opening-title-row{flex-direction:column;gap:10px}.idea-board-wrap,.idea-board-inner{width:100%;height:auto;aspect-ratio:1}.idea-board-panel{justify-content:stretch}}.opening-related-section{padding:0 20px 60px;max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:40px}.opening-related-cards-block{display:flex;flex-direction:column;gap:16px;padding-top:40px;border-top:1px solid var(--border-color, rgba(255,255,255,.1))}.opening-related-cards-title{font-size:1.1em;margin:0;opacity:.7;font-weight:500;text-transform:uppercase;letter-spacing:.05em}.opening-mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.opening-mini-card{display:flex;flex-direction:column;background:var(--panel-color);border:1px solid var(--btn-secondary);border-radius:8px;overflow:hidden;text-decoration:none;color:var(--text-color);transition:border-color .2s;box-sizing:border-box!important;width:auto!important}.opening-mini-card:hover{border-color:var(--accent-color)}.opening-mini-card-content{padding:10px;display:flex;flex-direction:column;gap:5px;flex:1}.opening-mini-card-title{font-size:.9em;font-weight:600;margin:0}.opening-mini-card-intro{font-size:.78em;opacity:.6;margin:0;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}@media(max-width:640px){.opening-mini-grid{grid-template-columns:1fr}}.opening-full-guide{max-width:760px;margin:0 auto 40px;padding:0 20px}.opening-full-guide-summary{cursor:pointer;font-size:1.1em;font-weight:600;padding:16px 20px;background:var(--panel-color);border:1px solid var(--btn-secondary);border-radius:8px;color:var(--text-color);list-style:none}.opening-full-guide-summary::-webkit-details-marker{display:none}.opening-full-guide-summary:before{content:"▶";display:inline-block;margin-right:10px;font-size:.8em;transition:transform .15s ease;color:var(--accent-color, #bf5af2)}.opening-full-guide[open]>.opening-full-guide-summary:before{transform:rotate(90deg)}.opening-full-guide-body{padding:24px 4px 4px;line-height:1.7;color:var(--text-color)}.opening-full-guide-body h2,.opening-full-guide-body h3{margin:28px 0 12px}.opening-full-guide-body h2:first-child,.opening-full-guide-body h3:first-child{margin-top:0}.opening-full-guide-body p{margin:0 0 12px;opacity:.85}.opening-full-guide-moves{font-family:monospace;opacity:.6}[dir=rtl] .opening-full-guide-summary:before{margin-right:0;margin-left:10px}