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var(--color-border-light);box-shadow:var(--shadow-md)}.forum-filter-pop button{display:block;width:100%;text-align:left;padding:10px 12px;border:none;border-radius:8px;background:transparent;color:var(--color-text-secondary);font-size:13px;cursor:pointer}.forum-filter-pop button:hover,.forum-filter-pop button.is-active{background:var(--color-bg-elevated);color:var(--color-text-primary)}.forum-card{background:var(--color-bg-card);border-radius:20px;padding:28px 32px;border:1px solid var(--color-border-light);box-shadow:var(--shadow-md)}.forum-muted{color:var(--color-text-muted);font-size:14px}.forum-btn-primary{padding:12px 22px;border-radius:12px;border:none;background:var(--color-primary);color:var(--color-text-invert);font-weight:700;font-size:15px;cursor:pointer}.forum-btn-primary:hover{background:var(--color-primary-hover)}.forum-btn-secondary{padding:12px 22px;border-radius:12px;border:1px solid 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16px;border-radius:10px;border:none;background:var(--color-primary);color:#fff;font-size:14px;font-weight:600;cursor:pointer}.forum-side-section{margin-bottom:8px}.forum-side-title{font-size:13px;font-weight:700;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:12px}.forum-course-list{list-style:none;margin:0 0 12px;padding:0}.forum-course-item{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid var(--color-border-light);cursor:pointer;font-size:14px}.forum-course-item:last-child{border-bottom:none}.forum-course-name{font-weight:600;color:var(--color-text-primary);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.forum-course-meta{flex-shrink:0;font-size:12px;color:var(--color-text-muted);font-weight:600}.forum-side-link{font-size:13px;font-weight:600;color:var(--color-primary);text-decoration:none}.forum-side-link:hover{text-decoration:underline}.forum-right-panel{width:300px;flex-shrink:0;min-height:0;background:var(--color-bg-card);border-left:1px solid var(--color-border-light);padding:28px 20px;overflow-y:auto}.forum-post-card{background:var(--color-bg-card);border:1px solid var(--color-border-light);border-radius:18px;padding:22px 26px;box-shadow:var(--shadow-md);cursor:pointer;transition:border-color .15s,box-shadow .15s}.forum-post-card:hover{border-color:var(--color-border);box-shadow:0 8px 28px #00000014}[data-theme=dark] .forum-post-card:hover{box-shadow:0 8px 28px #00000059}.forum-post-card .post-top-bar{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:12px}.forum-post-card .post-date-corner{flex-shrink:0;font-size:13px;font-weight:500;color:var(--color-text-muted);margin-top:2px}.forum-post-card .post-head{display:flex;align-items:center;gap:12px}.forum-post-card .post-avatar{width:40px;height:40px;border-radius:50%;object-fit:cover;flex-shrink:0}.forum-post-card .post-avatar--initial{display:inline-flex;align-items:center;justify-content:center;background:var(--color-primary-bg);color:var(--color-primary);font-size:16px;font-weight:700}.forum-post-card .post-user{display:flex;flex-direction:column;gap:2px}.forum-post-card .post-name{font-size:15px;font-weight:700;color:var(--color-text-primary)}.forum-post-card .post-time{font-size:13px;color:var(--color-text-muted)}.forum-post-card .post-title{font-size:17px;font-weight:600;margin:0 0 8px;line-height:1.4;color:var(--color-text-primary)}.forum-post-card .post-excerpt{margin:0 0 12px;font-size:14px;line-height:1.55;color:var(--color-text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.forum-post-card .post-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.forum-post-card .post-tags{display:flex;flex-wrap:wrap;gap:8px}.forum-post-card .tag-pill{font-size:12px;padding:4px 10px;border-radius:8px;background:var(--color-bg-elevated);color:var(--color-text-secondary);font-weight:500}.forum-post-card .post-stats{display:flex;align-items:center;gap:16px;color:var(--color-text-muted);font-size:13px}.forum-post-card .stat{display:inline-flex;align-items:center;gap:5px}.forum-post-card .stat svg{opacity:.75}.forum-shell{display:flex;flex-direction:row;flex:1;align-items:stretch;min-width:0;min-height:0;overflow:hidden}.forum-shell__main{flex:1;min-width:0;min-height:0;overflow:auto}.forum-sub-nav{width:88px;flex-shrink:0;background:var(--color-bg-card);border-right:1px solid var(--color-border-light);display:flex;flex-direction:column;align-items:stretch;padding:20px 8px 24px;gap:6px}.forum-sub-nav__item{display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 4px;border:none;border-radius:12px;background:transparent;cursor:pointer;color:var(--color-text-muted);font-family:inherit;transition:color .15s,background .15s}.forum-sub-nav__item:hover{color:var(--color-text-secondary);background:var(--color-bg-elevated)}.forum-sub-nav__item--active{color:var(--color-text-primary);font-weight:600;background:var(--color-bg-elevated)}.forum-sub-nav__icon{display:flex;align-items:center;justify-content:center}.forum-sub-nav__label{font-size:11px;line-height:1.2;text-align:center;position:relative}.forum-sub-nav__badge{position:absolute;top:-6px;right:-10px;min-width:16px;height:16px;padding:0 4px;border-radius:999px;background:var(--color-primary);color:var(--color-text-invert);font-size:9px;font-weight:700;display:inline-flex;align-items:center;justify-content:center}@media(max-width:640px){.forum-sub-nav{width:100%;height:56px;flex-direction:row;padding:0;border-right:none;border-top:1px solid var(--color-border-light);position:fixed;bottom:0;left:0;right:0;z-index:300;justify-content:space-around;align-items:stretch;gap:0}.forum-sub-nav__item{flex:1;padding:4px 2px;border-radius:0;gap:3px}.forum-sub-nav__label{font-size:10px}.forum-main{padding:12px 16px 72px}.forum-post-card{padding:16px 18px;border-radius:14px}.forum-search-full{padding:10px 14px;border-radius:12px}.forum-toolbar-row,.forum-toolbar{gap:8px 10px;margin-bottom:14px}.forum-controls-row{flex-direction:column;align-items:stretch}.forum-select{min-width:0;width:100%}.forum-btn-filter{padding:9px 12px;font-size:13px}.forum-search-btn{padding:10px 14px}}@keyframes bank-shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.bank-module{color:var(--color-text-primary)}.bank-past-page{width:100%;padding:20px 24px 40px;min-height:calc(100vh - 48px);display:flex;flex-direction:column}.bank-past-layout{display:flex;align-items:flex-start;gap:24px;width:100%}.bank-past-main{flex:1;min-width:0}.bank-past-sidebar{position:sticky;top:20px;flex:0 0 min(280px,32vw);max-width:100%;display:flex;flex-direction:column;gap:20px;padding:20px;border-radius:16px;border:1px solid var(--color-border-light);background:linear-gradient(165deg,var(--color-bg-elevated) 0%,var(--color-bg-card) 48%,var(--color-bg-elevated) 100%);box-shadow:0 1px 4px #0f172a12,0 1px 2px #0f172a0a,inset 0 1px #ffffff0a}.bank-sidebar-group{display:flex;flex-direction:column;gap:8px;min-width:0}.bank-sidebar-label{font-size:15px;font-weight:600;color:var(--color-text-muted);letter-spacing:.02em}.bank-sidebar-edit{padding-top:8px;border-top:1px solid var(--color-border-light)}.bank-tag-create{display:flex;gap:8px}.bank-tag-create .bank-modal-input{flex:1}.bank-tag-list{list-style:none;margin:0;padding:0 4px 0 0;display:flex;flex-direction:column;gap:8px;max-height:300px;overflow-y:auto;overscroll-behavior:contain}.bank-tag-list::-webkit-scrollbar{width:8px}.bank-tag-list::-webkit-scrollbar-thumb{border-radius:999px;background:color-mix(in srgb,var(--color-text-muted) 45%,transparent)}.bank-tag-list::-webkit-scrollbar-track{background:transparent}.bank-tag-list__item{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 10px;border-radius:8px;border:1px solid var(--color-border-light);background:var(--color-bg-card)}.bank-tag-list__name{min-width:0;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--color-text-primary);font-size:13px}.bank-tag-list__actions{display:flex;gap:6px;flex-shrink:0}.bank-tag-list__empty{color:var(--color-text-muted);font-size:13px}.bank-sidebar-edit-btn{width:100%;justify-content:center;padding:12px 16px;border-radius:12px;font-size:15px;font-weight:600;border:1px solid var(--color-border);cursor:pointer;transition:all .15s ease}.bank-sidebar-edit-btn--primary{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.bank-sidebar-edit-btn--primary:hover{filter:brightness(1.05)}.bank-sidebar-edit-btn--ghost{background:var(--color-bg-elevated);color:var(--color-text-secondary)}.bank-sidebar-edit-btn--ghost:hover{border-color:var(--color-primary);color:var(--color-primary)}@media(max-width:1100px){.bank-past-sidebar{flex:0 0 min(240px,28vw)}}@media(max-width:900px){.bank-past-layout{flex-direction:column;align-items:stretch}.bank-past-main{width:100%}.bank-past-sidebar{position:static;flex:none;width:100%}}.bank-past-body{flex:1;min-width:0;width:100%;min-height:320px;display:flex;flex-direction:column}.bank-past-toc{margin-top:8px;padding-top:16px;border-top:1px solid var(--color-border-light)}.bank-past-toc__heading{display:block;margin-bottom:8px}.bank-past-toc__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}.bank-past-toc__link{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:8px 10px;border-radius:8px;font-size:13px;color:var(--color-text-secondary);text-decoration:none;transition:background .12s ease,color .12s ease}.bank-past-toc__link:hover{background:var(--color-bg-elevated);color:var(--color-primary)}.bank-past-toc__name{flex:1;min-width:0;line-height:1.45}.bank-past-toc__pts{flex-shrink:0;font-variant-numeric:tabular-nums;color:var(--color-text-muted);font-size:12px}.bank-toolbar{display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px 24px;margin-bottom:24px;padding:16px 20px;border-radius:16px;background:linear-gradient(165deg,var(--color-bg-elevated) 0%,var(--color-bg-card) 48%,var(--color-bg-elevated) 100%);border:1px solid var(--color-border-light);box-shadow:0 1px 4px #0f172a12,0 1px 2px #0f172a0a,inset 0 1px #ffffff0a}.bank-toolbar-edit{margin-left:auto;flex-shrink:0;display:flex;align-items:flex-end;padding-bottom:2px}.bank-toolbar-edit__btn{min-width:7.25rem;justify-content:center}.bank-paper-blocks{display:flex;flex-direction:column;gap:0}.bank-sec-move,.bank-q-move{transition:transform .45s cubic-bezier(.22,1,.36,1)}.bank-field{display:flex;flex-direction:column;align-items:stretch;gap:8px;min-width:0}.bank-field>span{font-size:13px;font-weight:600;color:var(--color-text-muted);letter-spacing:.02em}.bank-field--select{flex:1 1 200px;min-width:min(260px,100%);max-width:320px}.bank-select-wrap{position:relative;display:inline-block;min-width:min(260px,100%);border-radius:12px;background:var(--color-bg-elevated);box-shadow:inset 0 1px 2px #0000000f,0 1px #ffffff0a;transition:box-shadow all .15s ease,border-color all .15s ease,transform all .15s ease}.bank-select-wrap:hover{box-shadow:inset 0 1px 2px #0000000a,0 4px 14px #00000012}.bank-select-wrap:focus-within{box-shadow:0 0 0 3px var(--color-primary-bg),0 4px 18px #00000014}.bank-select-wrap:after{content:"";position:absolute;right:0;top:0;bottom:0;width:44px;pointer-events:none;border-radius:0 12px 12px 0;background:linear-gradient(90deg,transparent,var(--color-bg-elevated) 35%)}.bank-select-wrap:before{content:"";position:absolute;right:16px;top:50%;width:8px;height:8px;margin-top:-6px;border-right:2.5px solid var(--color-text-muted);border-bottom:2.5px solid var(--color-text-muted);transform:rotate(45deg);pointer-events:none;z-index:1;opacity:.9;transition:transform all .15s ease,border-color all .15s ease}.bank-select-wrap:focus-within:before{border-color:var(--color-primary);transform:rotate(45deg) scale(1.05)}.bank-select{width:100%;appearance:none;padding:13px 46px 13px 18px;font-size:15px;font-weight:500;line-height:1.3;letter-spacing:.01em;color:var(--color-text-primary);background:transparent;border:1px solid var(--color-border);border-radius:12px;cursor:pointer;outline:none;transition:border-color all .15s ease,color all .15s ease}.bank-select:hover:not(:disabled){border-color:var(--color-primary-hover, var(--color-primary))}.bank-select:focus{border-color:var(--color-primary)}.bank-select:disabled{opacity:.55;cursor:not-allowed}.bank-select option{padding:10px 12px;font-weight:500;background:var(--color-bg-elevated);color:var(--color-text-primary)}.bank-skeleton-toolbar{background:linear-gradient(90deg,var(--color-bg-elevated) 25%,var(--color-border-light) 50%,var(--color-bg-elevated) 75%);background-size:200% 100%;animation:bank-shimmer 1.2s ease-in-out infinite;height:52px;width:100%;max-width:520px;margin-bottom:24px;border-radius:16px}.bank-skeleton-paper{flex:1;display:flex;flex-direction:column;gap:16px;padding:8px 0}.bank-skeleton-title{background:linear-gradient(90deg,var(--color-bg-elevated) 25%,var(--color-border-light) 50%,var(--color-bg-elevated) 75%);background-size:200% 100%;animation:bank-shimmer 1.2s ease-in-out infinite;height:28px;width:72%;border-radius:8px}.bank-skeleton-line{background:linear-gradient(90deg,var(--color-bg-elevated) 25%,var(--color-border-light) 50%,var(--color-bg-elevated) 75%);background-size:200% 100%;animation:bank-shimmer 1.2s ease-in-out infinite;height:18px;width:100%;border-radius:8px}.bank-skeleton-line--short{width:45%}.bank-skeleton-line--card{height:120px;margin-top:8px}.bank-paper-loading{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;min-height:360px;padding:32px;border-radius:16px;border:1px dashed var(--color-border-light);background:var(--color-bg-card);color:var(--color-text-muted);font-size:15px}.bank-paper-loading__spinner{width:40px;height:40px;border:3px solid var(--color-border-light);border-top-color:var(--color-primary);border-radius:50%;animation:bank-spin .75s linear infinite}@keyframes 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