.dd{display:grid;grid-template-columns:220px minmax(0,1fr);gap:0;height:calc(100vh - var(--header-height, 64px))}.dd-hist{border-right:1px solid var(--xhs-line);padding:16px 12px;display:flex;flex-direction:column;gap:10px;min-height:0;overflow-y:auto}.dd-new{height:38px;border-radius:10px;border:1px solid var(--xhs-line);background:var(--xhs-chip);color:var(--xhs-ink);font:inherit;font-size:14px;cursor:pointer}.dd-new:hover{background:var(--xhs-hover)}.dd-hist__t{margin:8px 4px 0;font-size:12px;color:var(--xhs-faint)}.dd-hist__list{display:grid;gap:2px}.dd-hist__item{text-align:left;padding:9px 10px;border:0;border-radius:8px;background:none;color:var(--xhs-sub);font:inherit;font-size:13px;cursor:pointer;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dd-hist__item:hover{background:var(--xhs-chip);color:var(--xhs-ink)}.dd-main{display:flex;flex-direction:column;min-height:0}.dd-scroll{flex:1 1 auto;overflow-y:auto;padding:32px 40px 8px}.dd-hello{max-width:720px;margin:6vh auto 0}.dd-hello__t{margin:0 0 22px;font-size:26px;font-weight:600;color:var(--xhs-ink);text-align:center}.dd-skills{display:grid;grid-template-columns:1fr 1fr;gap:12px}.dd-skill{text-align:left;padding:16px;border-radius:12px;border:1px solid var(--xhs-line);background:var(--xhs-chip);color:var(--xhs-ink);font:inherit;cursor:pointer}.dd-skill:hover{background:var(--xhs-hover)}.dd-skill b{display:block;font-size:15px;margin-bottom:6px}.dd-skill span{font-size:12px;line-height:1.6;color:var(--xhs-faint)}.dd-msgs{max-width:936px;margin:0 auto;display:grid;gap:26px;padding-bottom:24px}.dd-u{display:flex;justify-content:flex-end}.dd-u__b{max-width:78%;padding:11px 15px;border-radius:14px 14px 4px;background:var(--xhs-chip);color:var(--xhs-ink);font-size:15px;line-height:1.6;white-space:pre-wrap}.dd-dots{display:inline-flex;gap:4px;margin-left:8px;vertical-align:middle}.dd-dots i{width:6px;height:6px;border-radius:50%;background:var(--xhs-faint);display:inline-block;animation:dd-bounce 1.2s ease-in-out infinite}.dd-dots i:nth-child(2){animation-delay:.2s}.dd-dots i:nth-child(3){animation-delay:.4s}@keyframes dd-bounce{0%,80%,to{transform:translateY(0);opacity:.5}40%{transform:translateY(-4px);opacity:1}}.dd-think{display:flex;flex-direction:column}.dd-progress{display:inline-flex;align-items:center;gap:8px;color:var(--xhs-sub);font-size:14px}.dd-spinner{width:18px;height:18px;animation:dd-spin 1s linear infinite}@keyframes dd-spin{to{transform:rotate(360deg)}}.dd-skel{display:flex;flex-direction:column;gap:8px;margin-top:16px;padding-left:52px}.dd-skel i{height:24px;border-radius:4px;background:#3030341f;animation:dd-pulse 1s cubic-bezier(.4,0,.6,1) infinite}@keyframes dd-pulse{0%,to{opacity:.1}50%{opacity:.4}}.dd-a{max-width:100%}.dd-blk{font-size:15px;line-height:1.9;color:var(--xhs-ink);margin:0 0 12px;animation:dd-fade .8s cubic-bezier(.25,.1,.25,1) forwards;opacity:.2}@keyframes dd-fade{0%{opacity:.2}20%{opacity:.2}to{opacity:1}}.dd-blk b{font-weight:600}.dd-note{margin-top:14px;font-size:12px;color:var(--xhs-faint)}.dd-input{flex:0 0 auto;display:flex;align-items:center;gap:10px;max-width:936px;width:calc(100% - 80px);margin:0 auto 22px;height:52px;padding:0 8px 0 18px;border-radius:999px;background:var(--xhs-chip);border:1px solid transparent}.dd-input:focus-within{border-color:var(--xhs-sub)}.dd-input input{flex:1 1 auto;min-width:0;border:0;outline:none;background:none;color:var(--xhs-ink);font:inherit;font-size:15px}.dd-input input::placeholder{color:var(--xhs-faint)}.dd-send{flex:0 0 auto;width:38px;height:38px;border-radius:999px;border:0;background:var(--xhs-ink);color:var(--xhs-bg);cursor:pointer;display:flex;align-items:center;justify-content:center}.dd-send svg{width:19px;height:19px}.dd-send[disabled]{opacity:.4;cursor:default}@media(max-width:1099px){.dd{grid-template-columns:minmax(0,1fr);height:auto}.dd-hist{display:none}.dd-scroll{padding:20px 16px 8px}.dd-input{width:calc(100% - 24px)}.dd-hello{margin-top:3vh}.dd-skills{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){.dd-spinner,.dd-skel i,.dd-dots i{animation:none}.dd-blk{animation:none;opacity:1}}