/* Knowledge sharing uses the forum's navy, warm gold and snow-white surfaces. */
.sharing-page{--sh-ink:#102a45;--sh-muted:#6d7f94;--sh-line:#e0e8f1;--sh-gold:#d8b24a;display:grid;gap:22px;padding-bottom:28px}
.sharing-page *{box-sizing:border-box}.sharing-page svg{flex-shrink:0}.sharing-page [hidden]{display:none!important}
.sharing-hero{position:relative;isolation:isolate;overflow:hidden;min-height:258px;border-radius:26px;padding:34px 38px;border:1px solid rgba(255,255,255,.8);background:#183a60 url('/assets/forum-sharing-mountains.webp') center 61%/cover;box-shadow:0 18px 45px -24px rgba(16,42,69,.5)}
.sharing-hero::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(8,29,52,.83),rgba(17,44,72,.5) 45%,rgba(17,44,72,.05) 79%)}
.sharing-hero-copy{max-width:650px}.sharing-eyebrow{display:inline-flex;align-items:center;gap:9px;color:#f3d287;text-decoration:none;font-size:12px;font-weight:700;letter-spacing:1px}.sharing-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:#edc665;box-shadow:0 0 0 4px rgba(237,198,101,.14)}
.sharing-hero h1{display:flex;align-items:center;gap:14px;margin:16px 0 13px;color:#fff;font-size:38px;line-height:1.3;letter-spacing:1px}.sharing-hero h1 svg{width:35px;height:35px;color:#f1d18d;stroke-width:1.5}
.sharing-hero p{margin:0;color:#fff;font-size:17px;font-weight:650;line-height:1.7}.sharing-hero-caption{display:block;margin-top:5px;color:#e0e9f5;font-size:13px;line-height:1.7}.sharing-hero-count{display:inline-flex;gap:7px;align-items:center;margin-top:22px;padding:6px 11px;border:1px solid rgba(255,255,255,.26);border-radius:8px;background:rgba(255,255,255,.1);color:#f2f6fc;font-size:12px}.sharing-hero-count svg{width:15px;height:15px}
.sharing-board-nav{display:flex;justify-content:flex-end;margin-top:-4px}.sharing-board-nav .forum-tabs{margin:0;gap:8px}.sharing-board-nav .forum-tab{font-size:12px;padding:8px 14px}
.sharing-layout{display:grid;grid-template-columns:190px minmax(0,1fr);gap:22px;align-items:start}.sharing-sidebar{position:sticky;top:98px;min-width:0;border:1px solid var(--sh-line);border-radius:20px;background:rgba(255,255,255,.85);padding:17px 10px 20px;box-shadow:0 8px 28px rgba(16,42,69,.025)}
.sharing-sidebar-heading{display:flex;align-items:center;justify-content:space-between;padding:3px 10px 17px;color:var(--sh-ink);font-size:14px;font-weight:800;border-bottom:1px solid #edf2f7;margin:0 0 10px}.sharing-sidebar-heading span{font-size:11px;padding:3px 8px;border-radius:6px;background:#f0f4f8;color:#677c95;font-weight:600}
.sharing-topics{display:grid;gap:4px}.sharing-topic{display:flex;gap:10px;align-items:center;width:100%;min-height:44px;text-align:left;border:1px solid transparent;border-radius:10px;background:transparent!important;box-shadow:none!important;color:#63758b!important;padding:10px 10px;font-size:12px;font-weight:650;cursor:pointer;transition:background .15s,color .15s}.sharing-topic svg{width:17px;height:17px}.sharing-topic span{flex:1}.sharing-topic b{font-size:11px;font-weight:500;font-variant-numeric:tabular-nums;color:#7e8da0}.sharing-topic:hover{background:#f0f5fa!important;color:#173a60!important}.sharing-topic.is-active{color:#8b6715!important;background:#fff7e4!important;border-color:#f2dfad}.sharing-topic.is-active b{color:#8b6715}.sharing-sidebar-note{border-top:1px solid #edf2f7;margin:17px 10px 0;padding-top:17px;color:#7b8b9d;font-size:11px;line-height:1.9}
/* Reuse .forum-search, the shared input/select styles and .forum-write-btn. */
.sharing-main{min-width:0}.sharing-toolbar{display:grid;grid-template-columns:minmax(0,1fr) 140px auto;gap:14px;align-items:center}.sharing-toolbar .forum-search{min-width:0}.sharing-toolbar .forum-write-btn{min-height:48px;gap:7px}.sharing-toolbar .forum-write-btn svg{width:17px;height:17px}
.sharing-results-head{display:flex;align-items:center;justify-content:space-between;margin:22px 1px 14px;gap:12px}.sharing-results-head h2{margin:0;font-family:inherit;color:var(--sh-ink);font-size:15px;font-weight:800}.sharing-results-head>span{color:#7d8b9c;font-size:12px;font-variant-numeric:tabular-nums}
.sharing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;align-items:stretch}.sharing-card{display:flex;flex-direction:column;min-width:0;border:1px solid var(--sh-line);border-radius:17px;background:#fff;padding:18px 17px 14px;box-shadow:0 5px 18px rgba(16,42,69,.035);text-decoration:none;color:var(--sh-ink);transition:transform .18s,border-color .18s,box-shadow .18s}.sharing-card:hover{border-color:#ccb16b;transform:translateY(-3px);box-shadow:0 12px 24px rgba(16,42,69,.08)}.sharing-card-top{display:flex;align-items:center;justify-content:space-between;gap:5px;font-size:10px;color:#728399}.sharing-card-topic{display:flex;align-items:center;gap:5px;white-space:nowrap}.sharing-card-topic svg{width:23px;height:23px;padding:4px;border-radius:6px;background:#f0f5fa;color:#59728c}.sharing-card-top time{font-variant-numeric:tabular-nums;font-size:10px;white-space:nowrap;color:#8090a2}.sharing-card h2{font-family:inherit;margin:17px 0 11px;font-size:17px;line-height:1.65;letter-spacing:-.2px;font-weight:800;min-height:56px;overflow-wrap:anywhere}.sharing-card-excerpt{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;margin:0 0 15px;color:#74849a;font-size:12px;line-height:1.85;min-height:66px}.sharing-card-tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:auto;padding-bottom:18px}.sharing-card-tags span{padding:4px 8px;background:#f1f5f9;color:#627c96;font-size:10px;border-radius:7px;line-height:1.5}.sharing-card-author{display:flex;align-items:center;gap:6px;color:#667d96;font-size:10px;padding-bottom:14px}.sharing-author-dot{width:6px;height:6px;background:#c5a24e;border-radius:50%}.sharing-card-read{margin-left:auto;display:flex;align-items:center;gap:4px;color:#54718e;font-size:10px}.sharing-card-read svg{width:13px;height:13px}.sharing-card-metrics{border-top:1px solid #edf2f7;padding-top:12px;display:flex;gap:12px;flex-wrap:wrap;color:#7a8da3;font-size:10px;font-variant-numeric:tabular-nums}.sharing-card-metrics>span{display:flex;align-items:center;gap:4px}.sharing-card-metrics svg{width:14px;height:14px}
.sharing-empty{padding:65px 20px;text-align:center;border:1px dashed #d8e3ef;border-radius:18px;background:rgba(255,255,255,.7);color:#70859c}.sharing-empty>svg{width:38px;height:38px;color:#9fb0c1}.sharing-empty h3{font-size:17px;color:#254564;margin:14px 0 8px}.sharing-empty p{font-size:13px;line-height:1.8}.sharing-empty button{margin-top:8px;font-size:12px;border:1px solid #dfc98d;border-radius:10px;background:#fff7e4;color:#805c0b;box-shadow:none;cursor:pointer;padding:10px 16px}
.sharing-page :is(a,button):focus-visible{outline:3px solid #c0a04e;outline-offset:3px}
@media(min-width:1600px){.sharing-grid{gap:18px}}
@media(max-width:1100px){.sharing-layout{grid-template-columns:170px minmax(0,1fr);gap:18px}.sharing-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.sharing-page{gap:16px}.sharing-hero{min-height:232px;padding:28px 25px;border-radius:22px;background-position:60% 60%}.sharing-hero h1{font-size:32px}.sharing-hero p{font-size:15px}.sharing-hero-caption{font-size:12px;max-width:230px}.sharing-hero::before{background:linear-gradient(90deg,rgba(8,29,52,.82),rgba(17,44,72,.3))}.sharing-board-nav{justify-content:flex-start;overflow:auto}.sharing-board-nav .forum-tabs{flex-wrap:nowrap}.sharing-layout{grid-template-columns:minmax(0,1fr);gap:15px}.sharing-sidebar{position:static;padding:9px;border-radius:15px;overflow:hidden}.sharing-sidebar-heading,.sharing-sidebar-note{display:none}.sharing-topics{display:flex;gap:6px;overflow-x:auto;padding:1px 1px 4px;scrollbar-width:thin}.sharing-topic{flex:0 0 auto;width:auto;min-height:40px;padding:9px 11px;font-size:12px;gap:7px}.sharing-topic svg{width:15px;height:15px}.sharing-topic b{font-size:10px}.sharing-topic span{white-space:nowrap}.sharing-toolbar{grid-template-columns:minmax(0,1fr) auto;gap:10px}.sharing-toolbar .forum-search{grid-column:1 / -1}.sharing-toolbar .forum-write-btn{width:auto}.sharing-results-head{margin-top:19px}.sharing-card{padding:18px}.sharing-card h2{font-size:17px}.sharing-card-top time{font-size:11px}.sharing-card-excerpt{font-size:13px}.sharing-card-tags span{font-size:11px}.sharing-card-author,.sharing-card-read,.sharing-card-metrics{font-size:11px}}
@media(max-width:480px){.sharing-grid{grid-template-columns:minmax(0,1fr);gap:13px}.sharing-card h2{min-height:0;margin-top:13px;font-size:18px;line-height:1.6}.sharing-card-excerpt{min-height:0;-webkit-line-clamp:2}.sharing-card-tags{padding-bottom:14px}.sharing-hero h1{font-size:30px}.sharing-hero-count{margin-top:18px}.sharing-card-metrics{gap:18px}}
@media(prefers-reduced-motion:reduce){.sharing-page *{transition:none!important}.sharing-card:hover{transform:none}}
@media(max-width:760px){.sharing-board-nav .forum-tabs{display:flex;flex-wrap:nowrap;gap:6px;max-width:100%;overflow-x:auto;padding:2px}.sharing-board-nav .forum-tab{flex:0 0 auto;font-size:11px;padding:7px 11px;min-height:40px}}

/* Match the other forum boards: search, board tabs and compose share one toolbar. */
.sharing-unified-toolbar{margin:0;grid-template-columns:minmax(0,1fr) auto auto;gap:14px}
.sharing-unified-toolbar .forum-search{min-width:0}
.sharing-unified-toolbar .forum-tabs{margin:0}
.sharing-results-head{margin-top:0;min-height:43px}
.sharing-results-tools{display:flex;align-items:center;gap:14px;color:#6d7f94;font-size:12px}
.sharing-results-tools select{width:112px;padding:8px 10px;border-radius:10px;font-size:12px;background:#fbfdff}
@media(max-width:1000px) and (min-width:761px){.sharing-unified-toolbar{gap:8px}.sharing-unified-toolbar .forum-tab{padding:10px;font-size:12px}}
@media(max-width:760px){.sharing-unified-toolbar{grid-template-columns:minmax(0,1fr) auto;gap:10px}.sharing-unified-toolbar .forum-search{grid-column:1 / -1}.sharing-unified-toolbar .forum-tabs{display:flex;flex-wrap:nowrap;overflow-x:auto;gap:6px}.sharing-unified-toolbar .forum-tab{flex:0 0 auto;padding:8px;font-size:11px;min-height:40px}.sharing-unified-toolbar .forum-write-btn{width:auto;font-size:12px;min-height:40px;padding:8px 12px}.sharing-results-head{min-height:38px}.sharing-results-tools{gap:9px}.sharing-results-tools select{width:104px}}

/* Equal board tabs and a visually centred native sorting control. */
.sharing-results-tools select{appearance:none;-webkit-appearance:none;height:36px;line-height:20px;padding:7px 24px;text-align:center;text-align-last:center;background:#fbfdff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%2364758b' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 6 3 3 3-3'/%3E%3C/svg%3E") no-repeat right 9px center;background-size:16px 16px}
@media(max-width:760px){.sharing-unified-toolbar .forum-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));width:100%;gap:6px}.sharing-unified-toolbar .forum-tab{padding:8px 4px;min-width:0;white-space:nowrap}}

/* Centre the visible text + chevron as one group; native select remains accessible. */
.sharing-sort-control{position:relative;width:112px;height:36px;flex-shrink:0}
.sharing-sort-display{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:6px;border:1px solid #dbe5ef;border-radius:10px;background:#fbfdff;color:#102a45;font-size:12px;line-height:20px;pointer-events:none}
.sharing-sort-display svg{width:16px;height:16px;flex:none;color:#64748b}
.sharing-results-tools .sharing-sort-control select{position:absolute;inset:0;width:100%;height:100%;opacity:0;padding:0;margin:0;cursor:pointer}
.sharing-sort-control:focus-within .sharing-sort-display{border-color:#c7a344;box-shadow:0 0 0 4px rgba(216,178,74,.18)}
@media(max-width:760px){.sharing-sort-control{width:104px}}
/* 手机横向分类条：每个分类都是同样带边框的小胶囊，间距看起来均匀 */
@media(max-width:760px){
.sharing-topics{gap:8px}
.sharing-topic{border-color:#e3eaf2;background:#f7f9fc!important}
.sharing-topic.is-active{border-color:#f2dfad;background:#fff7e4!important}
}
/* 知识目录：图标、名称、数字三列固定，数字右对齐；名称过长时省略，不挤动数字 */
.sharing-topic{display:grid;grid-template-columns:auto minmax(0,1fr) auto}
.sharing-topic span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sharing-topic b{text-align:right}
@media(max-width:760px){.sharing-topic{display:flex}.sharing-topic span{overflow:visible}}
.sharing-sidebar-heading{justify-content:center}