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auto;display:grid}.footer-col{flex-direction:column;gap:8px;display:flex}.footer-col strong{color:#fff;align-items:center;gap:6px;font-size:15px;display:flex}.footer-col p{opacity:.85;margin:0;font-size:13px;line-height:1.7}.footer-col a{color:#9fd2cc;cursor:pointer;font-size:13px;text-decoration:none}.footer-col a:hover{color:#fff}.footer-col span{opacity:.7;font-size:12px}.footer-bottom{opacity:.7;border-top:1px solid #ffffff1f;flex-direction:column;gap:6px;width:min(1180px,100%);margin:22px auto 0;padding-top:16px;font-size:12px;display:flex}@media (width>=760px){.quick-cards{grid-template-columns:repeat(3,1fr)}.recommend-grid,.about-grid{grid-template-columns:repeat(2,1fr)}.footer-cols{grid-template-columns:1.5fr 1fr 1fr}.footer-bottom{flex-direction:row;justify-content:space-between}.carousel h2{font-size:30px}.brand-text small{display:block}}@media (width<=520px){.brand-text small{display:none}.brand-text strong{font-size:15px}}.read-more{color:var(--teal-deep);cursor:pointer;background:#1f8f881a;border-radius:999px;align-items:center;gap:6px;margin-top:12px;padding:8px 14px;font-size:13px;font-weight:700;display:inline-flex}.read-more:hover{background:#1f8f882e}.video-links{border-top:1px dashed var(--line);gap:8px;margin-top:12px;padding-top:12px;display:grid}.video-label{color:var(--coral);align-items:center;gap:6px;font-size:13px;font-weight:700;display:inline-flex}.video-link{border:1px solid var(--line);color:#234e4b;background:#fbfdfc;border-radius:10px;align-items:center;gap:8px;padding:9px 12px;font-size:13px;text-decoration:none;display:flex}.video-link:hover{border-color:var(--teal);background:#1f8f880f}.video-link span{flex:1;min-width:0}.video-link small{color:var(--coral);background:#e35d4f1f;border-radius:999px;flex-shrink:0;padding:2px 8px;font-size:11px}.overlay{z-index:100;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0a1e1c8c;justify-content:center;align-items:flex-end;padding:0;display:flex;position:fixed;inset:0}.overlay-panel{background:#fff;border-radius:20px 20px 0 0;width:100%;max-width:720px;max-height:92vh;padding:22px 18px 40px;animation:.22s sheet-up;overflow-y:auto}@keyframes sheet-up{0%{opacity:.6;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.overlay-head{background:#fff;justify-content:space-between;align-items:flex-start;gap:12px;padding-top:4px;display:flex;position:sticky;top:-22px}.overlay-head h2{color:var(--teal-ink);margin:0;font-size:20px;line-height:1.4}.overlay-close{color:#355d5a;cursor:pointer;background:#eef3f1;border-radius:50%;flex-shrink:0;place-items:center;width:36px;height:36px;display:grid}.overlay-lead{color:#355d5a;background:#1f8f8812;border-radius:12px;margin:14px 0 0;padding:12px 14px;font-size:15px;line-height:1.7}.overlay-body p{color:#34504d;margin:14px 0 0;font-size:15px;line-height:1.85}.overlay-sources{border-top:1px solid var(--line);margin-top:24px;padding-top:18px}.overlay-sources h3{color:var(--teal-ink);align-items:center;gap:6px;margin:0 0 12px;font-size:16px;display:flex}.overlay-sources ul{gap:8px;margin:0;padding:0;list-style:none;display:grid}.overlay-sources a{color:var(--teal-deep);border:1px solid var(--line);word-break:break-all;background:#fbfdfc;border-radius:10px;align-items:center;gap:8px;padding:10px 12px;font-size:14px;text-decoration:none;display:inline-flex}.overlay-sources a:hover{border-color:var(--teal);color:var(--teal)}.overlay-disclaimer{color:#8aa6a3;margin:12px 0 0;font-size:12px;line-height:1.6}.topic-zone{margin:22px 0}.topic-head{justify-content:space-between;align-items:center;gap:10px;display:flex}.topic-head h3{color:var(--teal-ink);align-items:center;gap:8px;margin:0;font-size:16px;display:flex}.topic-new{background:var(--coral);color:#fff;cursor:pointer;border-radius:999px;align-items:center;gap:6px;padding:8px 14px;font-size:13px;font-weight:700;display:inline-flex}.topic-form{background:var(--card);border:1px solid var(--line);border-radius:16px;gap:8px;margin-top:14px;padding:16px;display:grid}.form-label{color:var(--teal-deep);margin-top:6px;font-size:13px;font-weight:700}.mode-picker{gap:12px;margin-top:4px;display:grid}.mode-cat-title{color:var(--coral);margin-bottom:6px;font-size:12px;font-weight:800;display:block}.mode-options{flex-wrap:wrap;gap:6px;display:flex}.mode-chip{border:1px solid var(--line);color:#41615e;cursor:pointer;background:#fff;border-radius:10px;padding:7px 11px;font-size:12px;font-weight:600}.mode-chip.is-active{background:var(--teal);color:#fff;border-color:var(--teal)}.mode-desc{color:#557471;background:#1f8f8812;border-radius:10px;margin:6px 0 0;padding:10px 12px;font-size:13px;line-height:1.6}.topic-list{gap:10px;margin-top:14px;display:grid}.topic-card{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--coral);border-radius:14px;padding:14px}.topic-card-head{justify-content:space-between;align-items:flex-start;gap:10px;display:flex}.topic-card-head strong{color:var(--teal-ink);font-size:16px}.topic-mode{color:var(--coral);background:#e35d4f1f;border-radius:999px;margin-top:6px;padding:3px 10px;font-size:12px;font-weight:700;display:inline-block}.topic-desc{color:#45615e;margin:10px 0 0;font-size:14px;line-height:1.7}.topic-meta{color:#9bb3b0;gap:12px;margin-top:10px;font-size:12px;display:flex}.list-title{color:var(--teal-ink);margin:22px 0 10px;font-size:16px}@media (width>=760px){.overlay{align-items:center;padding:24px}.overlay-panel{border-radius:20px}.overlay-head{top:-22px}}.card-anatomy{aspect-ratio:4/3;background:#0f2e2c;border-radius:14px;width:100%;display:block;position:relative;overflow:hidden}.card-anatomy img{object-fit:cover;width:100%;height:100%;display:block}.card-anatomy-tag{color:#d6f3ef;background:#0f2e2cd1;border-radius:999px;padding:3px 9px;font-size:11px;font-weight:700;position:absolute;bottom:8px;left:8px}.anatomy-grid{grid-template-columns:repeat(2,1fr);gap:8px;margin-top:10px;display:grid}.anatomy-thumb{border:1px solid var(--line);cursor:zoom-in;aspect-ratio:1;background:#f3f7f6;border-radius:12px;padding:0;overflow:hidden}.anatomy-thumb img{object-fit:cover;width:100%;height:100%;display:block}.anatomy-thumb:first-child{aspect-ratio:16/10;grid-column:1/-1}.anatomy-source{color:#8aa6a3;flex-wrap:wrap;align-items:center;gap:6px;margin:10px 0 0;font-size:12px;display:flex}.anatomy-source a{color:var(--teal-deep);align-items:center;gap:4px;text-decoration:none;display:inline-flex}.anatomy-source a:hover{color:var(--teal)}.img-lightbox{z-index:120;cursor:zoom-out;background:#081413eb;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.img-lightbox img{object-fit:contain;cursor:default;background:#fff;border-radius:8px;max-width:100%;max-height:92vh}.lightbox-close{color:#fff;cursor:pointer;background:#ffffff26;border-radius:50%;place-items:center;width:42px;height:42px;display:grid;position:fixed;top:16px;right:16px}.view-toggle{z-index:9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffffeb;border:1px solid #123e3b1f;border-radius:999px;gap:4px;padding:4px;display:flex;position:absolute;top:14px;left:50%;transform:translate(-50%);box-shadow:0 6px 20px #14212124}.view-toggle button{color:#41615e;cursor:pointer;background:0 0;border-radius:999px;align-items:center;gap:5px;padding:7px 14px;font-size:13px;font-weight:700;display:inline-flex}.view-toggle button.is-active{color:#fff;background:#1f8f88}.ref-image-layer{z-index:6;background:#f4f7f7;justify-content:center;align-items:center;display:flex;position:absolute;inset:0;overflow:hidden}.ref-image-layer>img{object-fit:contain;width:auto;max-width:100%;height:auto;max-height:100%;padding:56px 12px 64px}.ref-nav{z-index:7;color:#1a6b66;cursor:pointer;background:#ffffffe6;border-radius:50%;place-items:center;width:40px;height:40px;display:grid;position:absolute;top:50%;transform:translateY(-50%);box-shadow:0 4px 14px #14212129}.ref-nav.prev{left:12px}.ref-nav.next{right:12px}.ref-dots{z-index:7;gap:7px;display:flex;position:absolute;bottom:50px;left:50%;transform:translate(-50%)}.ref-dots button{cursor:pointer;background:#1a6b664d;border-radius:999px;width:8px;height:8px}.ref-dots button.is-active{background:#1f8f88;width:20px}.ref-caption{z-index:7;color:#eaf6f3;background:linear-gradient(#0f2e2c00,#0f2e2cdb);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;padding:10px 14px;font-size:12px;display:flex;position:absolute;bottom:0;left:0;right:0}.ref-caption a{color:#aee3dc;align-items:center;gap:4px;text-decoration:none;display:inline-flex}.ref-caption a:hover{color:#fff}.seg-toggle{border:1px solid var(--line);background:#fff;border-radius:999px;gap:4px;margin:4px 0 14px;padding:4px;display:inline-flex}.seg-toggle button{color:#41615e;cursor:pointer;background:0 0;border-radius:999px;align-items:center;gap:5px;padding:7px 16px;font-size:13px;font-weight:700;display:inline-flex}.seg-toggle button.is-active{background:var(--teal);color:#fff}.calc-list{gap:14px;display:grid}.calc-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px}.calc-card h3{color:var(--teal-ink);margin:0 0 10px;font-size:16px}.calc-desc{color:#557471;margin:10px 0 12px;font-size:13px;line-height:1.6}.calc-fields{gap:10px;display:grid}.calc-field{gap:5px;display:grid}.calc-field>span{color:var(--teal-deep);font-size:13px;font-weight:700}.calc-input{align-items:center;gap:8px;display:flex}.calc-input input{border:1px solid var(--line);color:#1b3c39;background:#fbfdfc;border-radius:10px;outline:none;flex:1;min-width:0;padding:9px 12px;font-size:15px}.calc-input input:focus{border-color:var(--teal)}.calc-input small{color:#8aa6a3;min-width:42px;font-size:13px}.calc-run{background:var(--teal);color:#fff;cursor:pointer;border-radius:999px;align-items:center;gap:6px;margin-top:12px;padding:9px 20px;font-size:14px;font-weight:700;display:inline-flex}.calc-err{color:var(--coral);margin:10px 0 0;font-size:13px}.calc-result{background:#1f8f8814;border:1px solid #1f8f8833;border-radius:12px;margin-top:12px;padding:12px 14px}.calc-value{align-items:baseline;gap:6px;display:flex}.calc-value strong{color:var(--teal-deep);font-size:26px}.calc-value span{color:#557471;font-size:14px;font-weight:700}.calc-result p{color:#45615e;margin:6px 0 0;font-size:13px;line-height:1.6}.item-card-head .item-toggle{margin-left:auto}.year-badge{color:var(--coral);white-space:nowrap;background:#e35d4f1f;border-radius:999px;align-self:center;padding:3px 9px;font-size:11px;font-weight:800}.overlay-refs{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}.overlay-refs h3{color:var(--teal-ink);align-items:center;gap:6px;margin:0 0 12px;font-size:16px;display:flex}.overlay-refs ul{gap:10px;margin:0;padding:0;list-style:none;display:grid}.overlay-refs li{align-items:flex-start;gap:10px;display:flex}.ref-year{background:var(--teal);color:#fff;border-radius:8px;flex-shrink:0;margin-top:2px;padding:2px 8px;font-size:12px;font-weight:800}.overlay-refs a{color:var(--teal-deep);font-size:14px;line-height:1.5;text-decoration:none}.overlay-refs a:hover{color:var(--teal)}.overlay-refs a small{color:#8aa6a3;align-items:center;gap:4px;margin-top:2px;font-size:12px;display:flex}.up-row{justify-content:space-between;align-items:center;gap:8px;display:flex}.up-date{color:#9bb3b0;align-items:center;gap:6px;font-size:12px;font-weight:700;display:inline-flex}.new-dot{background:var(--coral);color:#fff;letter-spacing:.5px;border-radius:999px;padding:1px 6px;font-size:10px;font-style:normal;font-weight:800}.nav-tools{flex-shrink:0;align-items:center;gap:6px;display:flex}.nav-tool{width:38px;height:38px;color:var(--teal-deep);cursor:pointer;background:#1f8f881f;border-radius:10px;place-items:center;display:grid}.nav-tool:hover{background:#1f8f8833}.nav-lang{min-width:38px;height:38px;color:var(--teal-deep);letter-spacing:.4px;cursor:pointer;background:#1f8f881f;border-radius:10px;padding:0 10px;font-size:13px;font-weight:800}.nav-lang:hover{background:#1f8f8833}.topic-card{cursor:pointer;transition:box-shadow .18s,transform .18s}.topic-card:hover{box-shadow:0 10px 26px #123e3b1a}.topic-card.is-pinned{border-left-color:var(--teal);background:#1f8f880d}.topic-badges{flex-wrap:wrap;align-items:center;gap:6px;margin-top:6px;display:flex}.pin-badge{background:var(--teal);color:#fff;border-radius:999px;align-items:center;gap:4px;padding:3px 9px;font-size:11px;font-weight:800;display:inline-flex}.topic-stat{color:#7d9d99;align-items:center;gap:4px;font-size:12px;font-weight:700;display:inline-flex}.topic-actions{align-items:center;gap:6px;display:flex}.topic-back{color:var(--teal-deep);cursor:pointer;background:#1f8f881a;border-radius:999px;align-items:center;gap:6px;margin-bottom:14px;padding:8px 14px;font-size:13px;font-weight:700;display:inline-flex}.topic-detail-card{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--coral);border-radius:16px;margin-bottom:16px;padding:18px}.topic-detail-card.is-pinned{border-left-color:var(--teal)}.topic-detail-card h2{color:var(--teal-ink);margin:0;font-size:20px;line-height:1.35}.topic-guide{color:#45615e;background:#1f8f8812;border-radius:12px;margin:12px 0 0;padding:12px 14px;font-size:13px;line-height:1.7}.topic-guide strong{color:var(--teal-deep)}.like-btn,.pin-btn{border:1px solid var(--line);color:#41615e;cursor:pointer;background:#fff;border-radius:999px;align-items:center;gap:5px;padding:7px 13px;font-size:13px;font-weight:700;display:inline-flex}.like-btn.is-on{color:var(--coral);background:#e35d4f1f;border-color:#e35d4f66}.pin-btn.is-on{background:var(--teal);color:#fff;border-color:var(--teal)}.reply-list{gap:10px;margin-top:6px;display:grid}.reply-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px}.reply-card.is-featured{background:#1f8f880d;border-color:#1f8f8866}.reply-head{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:6px;display:flex}.reply-head strong{color:var(--teal-ink);font-size:14px}.reply-head .msg-time{color:#9bb3b0;font-size:12px}.reply-card p{color:#45615e;margin:0;font-size:14px;line-height:1.7}.reply-actions{align-items:center;gap:10px;margin-top:8px;display:flex}.reply-mini{color:#7d9d99;cursor:pointer;background:0 0;align-items:center;gap:4px;font-size:12px;font-weight:700;display:inline-flex}.reply-mini.is-on{color:var(--coral)}.reply-mini.pin.is-on{color:var(--teal)}[data-theme=dark]{--teal-ink:#e9f3f1;--teal-deep:#58c7be;--teal:#2fb3aa;--coral:#f2705f;--line:#ffffff1a;--card:#172321;--bg:#0d1615}[data-theme=dark] .portal-shell{background:radial-gradient(1200px 400px at 50% -120px, #2fb3aa24, transparent 70%), var(--bg)}[data-theme=dark] .portal-nav{background:#0d1615eb}[data-theme=dark] .nav-item:not(.is-active){color:#b6ccc8}[data-theme=dark] .brand-text small{color:#7fa7a2}[data-theme=dark] .nav-tool,[data-theme=dark] .nav-lang,[data-theme=dark] .nav-search-btn{background:#58c7be24}[data-theme=dark] .page-head p,[data-theme=dark] .group-intro,[data-theme=dark] .item-body,[data-theme=dark] .formula-meta dd,[data-theme=dark] .quick-desc,[data-theme=dark] .recommend-card p,[data-theme=dark] .up-body,[data-theme=dark] .about-card p,[data-theme=dark] .msg-card p,[data-theme=dark] .board-rules ul,[data-theme=dark] .topic-desc,[data-theme=dark] .topic-guide,[data-theme=dark] .reply-card p,[data-theme=dark] .calc-desc,[data-theme=dark] .calc-result p,[data-theme=dark] .calc-value span,[data-theme=dark] .mode-desc,[data-theme=dark] .overlay-lead,[data-theme=dark] .overlay-body p{color:#a4bfbb}[data-theme=dark] .hit-path,[data-theme=dark] .msg-time,[data-theme=dark] .reply-head .msg-time,[data-theme=dark] .topic-meta,[data-theme=dark] .topic-stat,[data-theme=dark] .reply-mini,[data-theme=dark] .empty-hint,[data-theme=dark] .anatomy-source,[data-theme=dark] .overlay-disclaimer,[data-theme=dark] .calc-input small,[data-theme=dark] .up-date{color:#83aaa4}[data-theme=dark] .chip:not(.is-active),[data-theme=dark] .mode-chip:not(.is-active),[data-theme=dark] .like-btn:not(.is-on),[data-theme=dark] .pin-btn:not(.is-on),[data-theme=dark] .seg-toggle,[data-theme=dark] .view-toggle button:not(.is-active){color:#b6ccc8;background:#1c2a27}[data-theme=dark] .seg-toggle button:not(.is-active){color:#b6ccc8}[data-theme=dark] .board-input,[data-theme=dark] .board-textarea,[data-theme=dark] .calc-input input,[data-theme=dark] .video-link,[data-theme=dark] .overlay-sources a{color:#dcebe8;background:#1c2a27}[data-theme=dark] .search-line input{color:#dcebe8}[data-theme=dark] .overlay-panel,[data-theme=dark] .overlay-head{background:#141f1d}[data-theme=dark] .overlay-close{color:#cfe6e2;background:#24322f}[data-theme=dark] .msg-card.is-featured{background:#241a19}[data-theme=dark] .topic-card.is-pinned,[data-theme=dark] .topic-detail-card.is-pinned,[data-theme=dark] .reply-card.is-featured{background:#2fb3aa17}[data-theme=dark] .ref-image-layer,[data-theme=dark] .anatomy-thumb{background:#10201d}.models-spinner{border:3px solid #1f8f8833;border-top-color:var(--teal);border-radius:50%;width:40px;height:40px;margin:0 auto;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.overlay-related{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}.overlay-related h3{color:var(--teal-ink);align-items:center;gap:6px;margin:0 0 12px;font-size:16px;display:flex}.related-grid{gap:8px;display:grid}.related-item{text-align:left;background:var(--card);border:1px solid var(--line);cursor:pointer;border-radius:12px;padding:11px 13px}.related-item strong{color:var(--teal-ink);font-size:14px;display:block}.related-item span{color:#5a7976;-webkit-line-clamp:1;-webkit-box-orient:vertical;margin-top:3px;font-size:12px;line-height:1.5;display:-webkit-box;overflow:hidden}[data-theme=dark] .related-item span{color:#83aaa4}.prevnext-bar{gap:10px;margin-top:20px;display:flex}.prevnext-bar button{color:var(--teal-deep);cursor:pointer;background:#1f8f881a;border-radius:12px;flex:1;justify-content:center;align-items:center;gap:6px;min-width:0;padding:11px 12px;font-size:13px;font-weight:700;display:flex}.prevnext-bar button:disabled{opacity:.4;cursor:default}.prevnext-bar button span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}[data-theme=dark] .prevnext-bar button{color:#b6ccc8;background:#1c2a27}.memory-box{background:#e35d4f14;border:1px solid #e35d4f38;border-radius:12px;margin-top:12px;padding:12px 14px}.memory-label{color:var(--coral);align-items:center;gap:6px;font-size:13px;font-weight:800;display:inline-flex}.memory-box ul{margin:8px 0 0;padding-left:20px}.memory-box li{color:#4d6b68;font-size:13px;line-height:1.75}[data-theme=dark] .memory-box{background:#f2705f1a;border-color:#f2705f47}[data-theme=dark] .memory-box li{color:#c9ddd9}.compare-wrap{margin-top:12px}.compare-label{color:var(--teal-deep);align-items:center;gap:6px;margin-bottom:8px;font-size:13px;font-weight:800;display:inline-flex}.compare-scroll{-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:12px;overflow-x:auto}.compare-table{border-collapse:collapse;width:100%;min-width:360px;font-size:12.5px}.compare-table th,.compare-table td{text-align:left;border-bottom:1px solid var(--line);color:#4d6b68;vertical-align:top;padding:8px 10px;line-height:1.55}.compare-table thead th{color:var(--teal-deep);white-space:nowrap;background:#1f8f881a;font-weight:800}.compare-table tbody tr:last-child td{border-bottom:0}.compare-table .compare-th{color:var(--teal-ink);white-space:nowrap;background:#1f8f880a;font-weight:700}[data-theme=dark] .compare-table th,[data-theme=dark] .compare-table td{color:#a4bfbb}[data-theme=dark] .compare-table thead th{background:#2fb3aa24}[data-theme=dark] .compare-table .compare-th{color:#dcebe8;background:#2fb3aa14}