:root{--blue:#315ff2;--ink:#111827;--muted:#8791a1;--line:#e5e7eb;--side:#f7f8fa}*{box-sizing:border-box}body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;color:var(--ink)}.app{display:flex;min-height:100vh}aside{width:260px;background:var(--side);border-right:1px solid #e8e9ec;padding:23px 15px 15px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:8px;color:var(--blue);font-size:21px}.mark,.logo{display:grid;place-items:center;background:var(--blue);color:#fff;font-weight:800}.mark{object-fit:cover}.mark{width:27px;height:27px;border-radius:50%;font-size:14px}.brand-en{font-size:9px;letter-spacing:.18em;color:#a1a7b2;margin:3px 0 25px 35px}.new-chat{height:43px;border:1px solid #e3e6eb;border-radius:23px;background:#fff;font-size:13px;cursor:pointer}.side-label{font-size:11px;color:#9aa0aa;margin:29px 6px 9px}.side-label~a{display:block;padding:8px 6px;color:#30343d;font-size:13px;text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.profile{margin-top:auto;border-top:1px solid #e5e7eb;padding:16px 3px 0;display:flex;align-items:center;gap:8px}.profile>span{width:30px;height:30px;border-radius:50%;background:#f2b490;display:grid;place-items:center;font-size:12px}.profile b{display:block;font-size:12px}.profile small{color:#9aa0aa;font-size:10px}.profile em{margin-left:auto;color:#9aa0aa;font-style:normal}main{flex:1;position:relative}.topline{height:54px;border-bottom:1px solid #f0f1f3;padding:0 27px;display:flex;align-items:center;justify-content:space-between;color:#7a828e;font-size:12px}.topline button{border:0;background:none;font-size:22px;color:#8b929e}.welcome{min-height:calc(100vh - 260px);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:35px 20px 20px}.logo{width:38px;height:38px;border-radius:10px;margin-bottom:12px;object-fit:cover}.welcome h1{font-size:25px;margin:0 0 8px}.welcome>p{color:#a0a7b3;font-size:12px;margin:0 0 25px}.chat-wrap{width:min(780px,100%)}.messages{display:flex;flex-direction:column;gap:10px;margin-bottom:10px;max-height:230px;overflow:auto}.message{padding:11px 14px;border-radius:10px;font-size:13px;line-height:1.6;max-width:75%}.assistant{background:#f7f8fa;align-self:flex-start}.user{background:#eaf0ff;color:#2046be;align-self:flex-end}.composer{border:1px solid #dfe3ea;border-radius:15px;box-shadow:0 8px 25px #1f29370c;padding:13px 14px 9px}.composer textarea{width:100%;border:0;outline:0;resize:none;font:14px/1.6 Arial,"Microsoft YaHei";min-height:44px}.composer textarea::placeholder{color:#b2bac6}.tools{display:flex;align-items:center;gap:8px}.chip{border:1px solid #d9e1fa;background:#fff;color:#5270d6;border-radius:16px;padding:6px 11px;font-size:11px;cursor:pointer}.send{margin-left:auto;border:0;background:#adc0ff;color:#fff;border-radius:50%;width:32px;height:32px;font-size:19px;cursor:pointer}.workflow{width:min(960px,calc(100% - 50px));margin:0 auto 35px;border-top:1px solid #eceef2;padding-top:20px}.workflow-title{display:flex;justify-content:space-between;margin-bottom:17px}.workflow-title h2{font-size:15px;margin:0 0 5px}.workflow-title p{font-size:11px;color:#a0a8b6;margin:0}.workflow-title span{font-size:10px;color:#31b887}.workflow-title i{display:inline-block;width:6px;height:6px;border-radius:50%;background:#39c895;margin-right:6px}.steps{display:grid;grid-template-columns:1fr 30px 1fr 30px 1fr 30px 1fr;align-items:center}.step{border:1px solid var(--line);border-radius:8px;padding:14px;min-height:90px}.step.active{border-color:#a8bdf7;background:#fbfcff}.step b{display:block;color:#bdc5d1;font-size:10px;margin-bottom:14px}.step strong{font-size:11px}.step small{display:block;color:#99a3b2;font-size:9px;margin-top:5px}.arrow{text-align:center;color:#c5ccd7;font-size:20px}#toast{position:fixed;bottom:20px;right:20px;background:#111827;color:#fff;padding:10px 15px;border-radius:7px;font-size:12px;opacity:0;transition:.2s}#toast.show{opacity:1}@media(max-width:760px){aside{width:190px}.welcome{min-height:auto;padding-top:70px}.steps{grid-template-columns:1fr}.arrow{transform:rotate(90deg);height:23px}.workflow{width:calc(100% - 30px)}.formats{display:none}}

aside a{cursor:pointer}aside a.selected{background:#e8efff;border-radius:6px;color:#315ff2}

.quick-actions{display:flex;gap:6px;margin:7px 0}.quick{border:1px solid #dbe3f6;background:#f8faff;color:#4c6ed0;border-radius:5px;padding:5px 10px;font-size:11px;cursor:pointer}.quick:hover{background:#eaf0ff}.topline em{font-style:normal;color:#315ff2;margin-left:12px}.result-panel{display:flex;align-items:center;justify-content:space-between;border:1px solid #e0e6f1;border-radius:9px;background:#fbfcff;padding:12px 14px;margin-top:12px;font-size:12px}.result-panel b{display:block}.result-panel span{display:block;color:#9ba6b7;font-size:10px;margin-top:4px}.result-actions{display:flex;gap:6px}.result-actions button{border:1px solid #d5def2;background:#fff;color:#4267cb;border-radius:5px;padding:6px 9px;font-size:10px;cursor:pointer}.result-actions button:hover{background:#edf3ff}

/* Use the supplied horizontal HydroLiber brand mark in both brand placements. */
.brand{gap:0}
.brand b{display:none}
.mark,.logo{display:block;width:auto;height:auto;max-width:100%;background:transparent;border-radius:0;object-fit:contain}
.mark{width:180px;height:54px}
.logo{width:62px;height:62px;margin-bottom:12px}
@media(max-width:760px){.mark{width:150px;height:45px}.logo{width:56px;height:56px}}

.result-panel{display:none}.result-panel.visible{display:flex}

.inline-result{margin-top:8px;display:flex;gap:6px}.inline-result button{border:1px solid #d5def2;background:#fff;color:#4267cb;border-radius:5px;padding:5px 8px;font-size:10px;cursor:pointer}.inline-result button:hover{background:#edf3ff}

.message h3,.message h4{margin:0 0 9px;font-size:14px}.message p{margin:0 0 8px}.message p:last-child{margin-bottom:0}.message ul{margin:7px 0;padding-left:20px}.message li{margin:4px 0}.message code{background:#eef2f8;border-radius:3px;padding:1px 4px;font-family:Consolas,monospace;font-size:11px}.message pre{background:#18243a;color:#e5edff;border-radius:6px;padding:10px;overflow:auto;white-space:pre-wrap}.message pre code{background:none;padding:0;color:inherit}

.param-form{display:none;border:1px solid #e0e6f1;border-radius:9px;padding:12px;margin-bottom:10px;background:#fbfcff}.param-form.open{display:block}.param-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.param-grid label{font-size:10px;color:#77849b}.param-grid input{display:block;width:100%;margin-top:4px;border:1px solid #dce3ee;border-radius:5px;padding:7px;font-size:11px;outline:0}.param-form>button{margin-top:10px;border:0;border-radius:5px;background:#315ff2;color:white;padding:7px 12px;font-size:11px;cursor:pointer}@media(max-width:760px){.param-grid{grid-template-columns:repeat(2,1fr)}}

/* Brand layout: a water-drop mark followed by the HydroLiber wordmark. */
.brand{gap:8px;align-items:center}
.brand b{display:block !important;flex:0 0 116px;width:116px;height:30px;color:transparent;font-size:0;line-height:0;background:transparent url("HydroLiber-wordmark-cropped.png") center / contain no-repeat !important}
.mark,.logo{max-width:none;object-fit:contain;background:transparent !important;border-radius:0 !important;mix-blend-mode:normal}
.mark{width:28px;height:38px;flex:0 0 28px}
.logo{width:48px;height:65px}
@media(max-width:760px){.brand b{flex-basis:102px;width:102px;height:27px}.mark{width:26px;height:35px;flex-basis:26px}.logo{width:44px;height:60px}}
.history-item{cursor:pointer}
.history-item:hover{background:#eef3ff;border-radius:6px;color:#315ff2}
.profile{cursor:pointer;width:100%;border:0;background:transparent;text-align:left;font:inherit;color:inherit}
.profile:hover{background:#eef3ff;border-radius:8px}
.profile:focus-visible,.new-chat:focus-visible,.history-item:focus-visible{outline:2px solid #315ff2;outline-offset:2px}
.temporary-materials{margin:0 0 10px;padding:10px 12px;border:1px solid #dce5f5;border-radius:10px;background:#f8faff;font-size:11px;color:#475569}
.temporary-title{display:flex;justify-content:space-between;gap:8px;margin-bottom:7px;color:#315ff2}.temporary-title span{font-size:10px;color:#8491a5}
.temporary-file{padding:6px 0;border-top:1px solid #e7edf7}.temporary-file b{display:block;color:#334155;font-size:11px}.temporary-file span{display:block;margin-top:3px;line-height:1.5;color:#64748b}
.temporary-confirm{margin-top:8px;border:1px solid #315ff2;border-radius:6px;background:#315ff2;color:#fff;padding:6px 10px;font-size:11px;cursor:pointer}.temporary-confirm:hover{background:#264fd1}.temporary-materials.confirmed{border-color:#b8e4d2;background:#f5fcf8}.temporary-materials.confirmed .temporary-title{color:#16805b}