:root{--blue:#0969ed;--navy:#102948;--muted:#617188;--line:#e1e8f1;--bg:#f5f8fc;--soft:#edf4ff}*{box-sizing:border-box}body{margin:0;color:var(--navy);background:var(--bg);font-family:Roboto,Arial,sans-serif;font-size:16px;line-height:1.5}button,input,a{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #77aaff;outline-offset:4px}button{border:0}button:disabled{cursor:default}.sidebar{position:fixed;inset:0 auto 0 0;width:254px;background:white;border-right:1px solid var(--line);padding:30px 20px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;gap:12px;margin-bottom:47px}.brand-mark{display:grid;place-items:center;background:var(--blue);color:white;border-radius:12px;font-size:30px;font-weight:800;width:47px;height:47px;position:relative}.brand-mark span{position:absolute;right:7px;bottom:2px;color:#95d6ff}.brand strong{font-size:20px;letter-spacing:-.5px}.brand small{display:block;font-size:10px;font-weight:700;letter-spacing:1px;color:var(--muted);margin-top:3px}.nav-label{font-size:11px;letter-spacing:1.4px;color:#7d8ba0;font-weight:700;margin:0 12px 13px}nav{display:flex;flex-direction:column;gap:6px}.nav-button{display:flex;align-items:center;gap:13px;width:100%;text-align:left;background:white;color:#52647c;border-radius:9px;padding:12px 14px;font-size:15px}.nav-button svg{width:20px;height:20px;flex-shrink:0}.nav-button.active{background:var(--soft);color:var(--blue);font-weight:700;box-shadow:inset 3px 0 var(--blue)}.nav-button:hover{background:#f1f6fd}.nav-separator{height:1px;background:var(--line);margin:17px 10px}.sidebar-bottom{margin-top:auto;padding:30px 12px 0}.hdv{font-size:20px;font-weight:800;letter-spacing:-.8px}.hdv span{color:var(--blue)}.sidebar-bottom p{font-size:10px;letter-spacing:1.3px;line-height:1.7;color:#8190a5;margin:7px 0 18px}.mockup-tag{font-size:12px;color:#6f7b8c;border:1px solid var(--line);padding:5px 9px;border-radius:5px}.workspace{margin-left:254px}.topbar{height:77px;background:white;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 40px;gap:18px}.breadcrumb{font-size:14px;color:var(--muted)}.breadcrumb span{margin:0 12px;color:#adb9c9}.breadcrumb b{font-weight:500;color:var(--navy)}.original{font-size:14px;font-weight:600;white-space:nowrap}.original span{margin-left:9px;color:var(--blue)}.icon-button{display:none;background:var(--soft);padding:6px 12px;color:var(--blue);border-radius:5px;font-size:22px}main{max-width:1480px;margin:auto;padding:37px 40px 20px}.intro{display:flex;justify-content:space-between;gap:32px;align-items:center;margin-bottom:27px}.eyebrow{font-size:11px;letter-spacing:1.7px;font-weight:700;color:var(--blue);margin-bottom:10px}h1{font-size:34px;line-height:1.2;letter-spacing:-.8px;margin:0 0 12px;font-weight:800}.intro p{margin:0;color:var(--muted);max-width:660px;font-size:15px}.intro-label{display:flex;gap:12px;align-items:center;flex-shrink:0;font-size:12px;color:var(--muted);line-height:1.8}.square-icon{background:#e9f1ff;color:var(--blue);font-size:30px;display:grid;place-items:center;width:44px;height:44px;border-radius:12px}.search-panel{background:white;border:1px solid var(--line);padding:21px 23px 17px;border-radius:13px;box-shadow:0 6px 22px #14376b04;margin-bottom:32px}form{display:flex;gap:12px}.search-field{display:flex;align-items:center;flex:1;min-width:0;border:1px solid #dbe4f0;border-radius:8px;background:#fbfcfe;padding:0 16px;gap:12px}.search-field svg{width:22px;height:22px;flex-shrink:0;color:#7c8fa8}input{border:0;min-width:0;background:none;width:100%;padding:14px 0;color:var(--navy);font-size:15px}input:focus{outline:none}input::placeholder{color:#8190a3}.search-field:focus-within{outline:2px solid var(--blue)}.primary{background:var(--blue);color:white;border-radius:8px;padding:13px 24px;font-size:15px;font-weight:600;box-shadow:0 4px 8px #0969ed20}.primary span{margin-left:15px}.primary:hover{background:#0458cb}.filters{display:flex;gap:8px;flex-wrap:wrap;margin-top:17px}.filter{background:white;border:1px solid transparent;border-radius:6px;padding:6px 11px;font-size:14px;color:var(--muted)}.filter:hover{background:var(--bg)}.filter.active{background:var(--soft);color:var(--blue);font-weight:600}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px;gap:16px}.section-title h2{font-size:19px;margin:0;font-weight:700;letter-spacing:-.2px}.section-title>span{font-size:13px;color:#7b8ba1}.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.category-card{background:white;border:1px solid var(--line);border-radius:12px;display:block;text-align:left;padding:22px;color:var(--navy);transition:transform .15s,border-color .15s,box-shadow .15s}.category-card:hover{transform:translateY(-3px);border-color:#a3c5f8;box-shadow:0 8px 22px #173d6910}.card-top{display:flex;align-items:center;justify-content:space-between}.card-icon{display:grid;place-items:center;width:41px;height:41px;border-radius:10px;background:var(--soft);color:var(--blue)}.card-icon svg{width:23px;height:23px}.card-arrow{font-size:20px;color:#94a5bb}.category-card h3{font-size:17px;margin:17px 0 7px}.category-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.65;min-height:46px}.lower-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:20px;margin-top:26px}.feature{background:#0e3a75;color:white;border-radius:13px;padding:23px 26px;position:relative;overflow:hidden}.feature-top{display:flex;justify-content:space-between;align-items:center;font-size:10px;letter-spacing:1.3px;color:#aecaf2}.feature-tag{background:#ffffff14;padding:5px 8px;border:1px solid #ffffff25;border-radius:4px;color:#d1e5ff}.feature h2{font-size:25px;margin:21px 0 5px;letter-spacing:-.3px}.feature p{font-size:14px;color:#bfd3ec;margin:0}.feature-bottom{display:flex;justify-content:space-between;align-items:end;margin-top:19px;gap:10px}.feature button{background:white;color:#124783;padding:10px 14px;border-radius:7px;font-size:14px;font-weight:600;z-index:1}.feature button span{margin-left:15px}.hdd-type{font-size:62px;line-height:.85;letter-spacing:-4px;color:#ffffff13;font-weight:800}.quick-panel{border:1px solid var(--line);background:white;border-radius:13px;padding:22px}.quick-panel .section-title h2{font-size:17px}#document-links{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}#document-links button{display:flex;justify-content:space-between;border-bottom:1px solid #edf1f6;background:white;color:#4b607a;padding:12px 0;font-size:14px}#document-links button:hover{color:var(--blue)}#document-links button span{color:#99aac0}.tool-strip{margin-top:22px;display:flex;align-items:center;gap:18px;background:#ebf2fc;border:1px solid #dce7f6;border-radius:10px;padding:17px 22px}.tool-strip>div{display:flex;align-items:center;gap:10px;flex:1}.tool-strip h2{font-size:15px;margin:0}.small-icon{font-size:23px;color:var(--blue)}.tool-strip button{font-size:14px;background:white;border:1px solid #dce7f6;border-radius:7px;padding:9px 15px;color:#405979;min-width:130px;text-align:left}.tool-strip button span{float:right;margin-left:17px;color:var(--blue)}footer{border-top:1px solid var(--line);margin-top:35px;padding-top:19px;display:flex;justify-content:space-between;gap:15px;font-size:11px;color:#8290a3}footer>span:first-child{font-weight:700;letter-spacing:1px}.text-button{background:none;color:var(--blue);font-size:14px}.result-card{background:white;border:1px solid var(--line);border-radius:10px;padding:20px 24px;margin-bottom:12px;display:flex;justify-content:space-between;gap:18px;align-items:center}.result-card h3{font-size:17px;margin:0 0 6px}.result-card p{font-size:14px;color:var(--muted);margin:0}.result-card button{flex-shrink:0;background:var(--soft);color:var(--blue);padding:9px 13px;border-radius:7px;font-size:14px}.empty-state{background:white;border:1px solid var(--line);border-radius:12px;padding:48px 25px;text-align:center}.empty-state h3{font-size:20px;margin:0 0 10px}.empty-state p{color:var(--muted);font-size:15px;margin:0 auto 22px;max-width:490px}.empty-state a{display:inline-block;background:var(--blue);color:white;padding:11px 18px;border-radius:7px;font-size:14px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}@media(min-width:1500px){main{padding-top:45px}.category-card{padding:26px}.category-card p{min-height:40px}.lower-grid{margin-top:28px}}@media(max-width:1150px){.sidebar{width:225px;padding-inline:14px}.workspace{margin-left:225px}.topbar{padding-inline:26px}main{padding:30px 26px}.intro-label{display:none}.category-card{padding:18px}.lower-grid{grid-template-columns:1fr 1fr}.feature{padding:22px}.hdd-type{font-size:42px}.feature button{font-size:12px}.brand strong{font-size:19px}}@media(max-width:850px){.sidebar{transform:translateX(-100%);transition:transform .2s;box-shadow:8px 0 30px #15305b14}.sidebar.open{transform:translateX(0)}.workspace{margin-left:0}.icon-button{display:block}.topbar{height:67px;padding-inline:20px}.breadcrumb{flex:1}.original{font-size:12px}main{padding:28px 22px}.category-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.category-card h3{font-size:16px}.category-card p{font-size:13px}.category-card{padding:16px}.brand{margin-bottom:30px}}@media(max-width:580px){.topbar{padding-inline:16px}.breadcrumb{font-size:12px}.breadcrumb span{margin:0 6px}.original{font-size:11px}.original span{margin-left:3px}main{padding:25px 16px 20px}.eyebrow{font-size:10px;letter-spacing:1.2px}h1{font-size:29px}.intro p{font-size:14px;line-height:1.65}.intro{margin-bottom:23px}.search-panel{padding:15px;margin-bottom:25px}form{flex-direction:column;gap:10px}.primary{padding:12px}.search-field{padding:0 11px}input{font-size:14px;padding:13px 0}.filters{gap:4px;margin-top:12px}.filter{font-size:12px;padding:6px 8px}.section-title h2{font-size:18px}.section-title>span{font-size:11px}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.category-card{padding:17px 14px}.card-icon{width:36px;height:36px;border-radius:8px}.card-icon svg{width:20px;height:20px}.category-card h3{font-size:15px;margin-top:14px}.category-card p{font-size:13px;min-height:64px}.lower-grid{grid-template-columns:1fr;gap:17px;margin-top:22px}.feature{padding:22px}.feature button{font-size:14px}.hdd-type{font-size:56px}.tool-strip{padding:17px;display:grid;grid-template-columns:1fr 1fr;gap:11px}.tool-strip>div{grid-column:1/-1}.tool-strip button{min-width:0;font-size:13px;padding:9px 11px}footer{flex-direction:column;gap:6px;margin-top:27px}.result-card{padding:18px;align-items:start}.result-card h3{font-size:16px}.result-card button{font-size:12px}.result-card p{font-size:13px}.empty-state{padding:35px 20px}}

.articles-panel{margin-bottom:32px}.articles-panel a{color:#0969ed;text-decoration:none;font-weight:600}.articles-panel .result-card{margin-bottom:10px}a.nav-button{text-decoration:none}

.legal-view .intro,.legal-view .search-panel{display:none}.legal-frame{width:100%;height:1000px;max-height:none;border:0;background:var(--bg);display:block;border-radius:12px;margin-bottom:24px}.legal-view #result-list{display:block}.legal-view main{padding-top:24px}@media(max-width:850px){.legal-view main{padding:20px 12px}.legal-frame{height:1100px}}

.category-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:0 0 32px}.category-card{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:245px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:14px;text-align:center}.category-card:hover{border-color:var(--blue);box-shadow:0 8px 24px #1029480a;transform:translateY(-2px)}.category-card h3{font-size:24px;line-height:1.3;margin:16px 0 0}.icon-3d{display:block;width:150px;height:150px;background-image:url('/engineering-icons-3d.png');background-size:300% 300%;background-repeat:no-repeat;flex-shrink:0}.articles-panel{margin-top:32px}
.chat-toggle{position:fixed;bottom:22px;right:22px;z-index:110;background:var(--blue);color:#fff;border-radius:30px;padding:15px 20px;box-shadow:0 6px 24px #0969ed40;font-weight:700}.chat-window{position:fixed;bottom:84px;right:22px;z-index:111;width:410px;max-width:calc(100vw - 24px);height:570px;max-height:calc(100dvh - 105px);background:white;border:1px solid var(--line);border-radius:16px;box-shadow:0 12px 50px #10294830;display:flex;flex-direction:column;overflow:hidden}.chat-window[hidden]{display:none}.chat-heading{display:flex;align-items:center;justify-content:space-between;padding:18px;background:var(--soft);border-bottom:1px solid var(--line)}.chat-heading strong{font-size:18px}.chat-heading small{display:block;font-size:13px;color:var(--muted);margin-top:4px}.chat-heading button{background:transparent;font-size:24px;color:var(--navy);padding:4px 8px}.chat-log{flex:1;overflow:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.chat-msg{padding:12px 14px;border-radius:12px;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.55;font-size:15px;background:var(--bg);max-width:95%;align-self:flex-start}.chat-msg.user{background:var(--blue);color:#fff;align-self:flex-end}.chat-links{display:flex;flex-direction:column;gap:6px;font-size:14px}.chat-links a{color:var(--blue);text-decoration:underline}.chat-status{font-size:13px;color:var(--muted);padding:0 16px 8px}.chat-form{padding:12px;border-top:1px solid var(--line);display:flex;flex-direction:row;gap:8px}.chat-form textarea{font:inherit;resize:none;min-width:0;flex:1;border:1px solid var(--line);border-radius:8px;padding:10px;max-height:120px}.chat-form button{background:var(--blue);color:#fff;border-radius:8px;padding:10px 14px}.chat-form button:disabled{opacity:.45}.chat-privacy{font-size:12px;color:var(--muted);margin:0;padding:0 12px 12px}
@media(max-width:560px){.category-grid{gap:12px}.category-card{min-height:185px;padding:16px 8px}.icon-3d{width:110px;height:110px}.category-card h3{font-size:18px;margin-top:12px}.chat-toggle{right:12px;bottom:14px;font-size:14px}.chat-window{right:12px;bottom:75px}.chat-heading strong{font-size:16px}}
.nav-icon-3d{display:block;width:31px;height:31px;flex:none;background:url('/engineering-icons-3d.png') no-repeat;background-size:300% 300%;filter:drop-shadow(0 1px 1px #10294824)}.nav-button:has(.nav-icon-3d){padding:7px 10px;gap:10px;min-height:46px}.lisp-view .intro,.lisp-view .search-panel,.app-water-view .intro,.app-water-view .search-panel{display:none}.lisp-catalog{display:grid;gap:22px}.lisp-hero{background:linear-gradient(130deg,#103a72,#0969ed);border-radius:18px;color:white;padding:32px}.lisp-kicker{font-size:12px;letter-spacing:1.6px;font-weight:700;color:#c6e3ff}.lisp-hero h3{font-size:34px;margin:7px 0}.lisp-hero p{margin:0;color:#e0edff;max-width:600px}.lisp-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.lisp-stat{background:white;border:1px solid var(--line);border-radius:12px;padding:18px;display:flex;flex-direction:column;gap:3px}.lisp-stat strong{font-size:26px;color:var(--blue)}.lisp-stat span{font-size:13px;color:var(--muted)}.lisp-toolbar{display:flex;gap:14px;align-items:center}.lisp-search{background:white;border:1px solid var(--line);border-radius:10px;padding:13px 16px;flex:1;width:auto}.lisp-tabs{display:flex;gap:6px}.lisp-tabs button{padding:10px 13px;background:white;border-radius:9px;color:var(--muted);border:1px solid var(--line)}.lisp-tabs button[aria-pressed=true]{background:var(--soft);color:var(--blue);border-color:#b9d5fd;font-weight:700}.lisp-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.lisp-card{background:white;border:1px solid var(--line);border-radius:14px;padding:22px;display:flex;flex-direction:column;align-items:flex-start}.lisp-kind{color:var(--blue);background:var(--soft);padding:4px 9px;border-radius:6px;font-size:12px;font-weight:700}.lisp-card h3{margin:13px 0;font-size:20px}.lisp-fields{display:grid;grid-template-columns:90px 1fr;gap:8px 10px;margin:0 0 20px;font-size:14px}.lisp-fields dt{font-weight:700;color:var(--muted)}.lisp-fields dd{margin:0;overflow-wrap:anywhere}.lisp-action{background:var(--blue);color:white;border-radius:8px;padding:11px 15px;font-weight:700}.lisp-action:disabled{background:#e8edf3;color:#66778a}.lisp-card .lisp-action{margin-top:auto}.lisp-note{color:var(--muted);font-size:13px;line-height:1.6}.lisp-empty,.water-coming{background:white;border:1px solid var(--line);border-radius:14px;padding:28px}.lisp-empty{text-align:center;grid-column:1/-1;color:var(--muted)}.lisp-bottom{display:flex;justify-content:flex-end}.lisp-alert{background:#fff0e9;color:#8a360b;padding:12px;border-radius:8px}.lisp-dialog{border:0;border-radius:16px;padding:26px;width:min(440px,calc(100vw - 28px));box-shadow:0 20px 60px #10294855}.lisp-dialog::backdrop{background:#10294899}.lisp-dialog h3{font-size:22px;margin:0 0 10px}.lisp-dialog p{line-height:1.6}.lisp-follow{display:block;text-align:center;background:var(--blue);color:#fff;border-radius:9px;padding:13px;font-weight:700}.lisp-dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.lisp-dialog-actions button:first-child{background:#e8edf3;color:var(--navy)}.water-coming{text-align:center;max-width:600px;margin:20px auto}.water-coming .icon-3d{margin:auto}.water-coming h3{font-size:25px}.water-coming p{color:var(--muted)}
@media(max-width:700px){.lisp-stats{grid-template-columns:repeat(2,1fr)}.lisp-list{grid-template-columns:1fr}.lisp-toolbar{flex-direction:column;align-items:stretch}.lisp-tabs button{flex:1}.lisp-hero{padding:24px}.lisp-hero h3{font-size:28px}.lisp-stat{padding:14px}.lisp-stat strong{font-size:23px}.nav-icon-3d{width:30px;height:30px}}
.nav-overview-icon{background-image:url('/overview-icon-3d.png');background-size:contain;background-position:center;background-repeat:no-repeat}

.hungdiva-logo{display:block;width:100%;height:auto;object-fit:contain}.brand .hungdiva-logo{width:210px;max-width:100%}.hdv .hungdiva-logo{width:165px}footer .hungdiva-logo{width:110px}.portal-brand .hungdiva-logo{width:175px}.auth-brand-logo{display:block;width:100%;max-width:320px;height:auto;margin:0 auto 24px}.portal input[type=checkbox]{width:auto}.chat-brand-logo{display:block;width:150px;height:auto;background:#fff;border-radius:7px;padding:4px}