:root{--ink:#183a48;--muted:#677b83;--paper:#f4f6f4;--line:#dce5e3;--teal:#14766b;--teal-light:#e4f3ee;--blue:#3699cf;--amber:#a46b22;--navy:#112e3d;--red:#b54e3f;--radius:16px;font-family:Inter,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,a,summary{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #e4ab47;outline-offset:4px}button{transition:background .16s,box-shadow .16s,transform .16s}button:hover{filter:brightness(.97)}button:active{transform:translateY(1px)}[hidden]{display:none!important}.masthead{height:92px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:0 max(32px,calc((100vw - 1440px)/2));background:#fbfcfa}.brand{display:flex;gap:13px;align-items:center;text-decoration:none;color:var(--ink);font-size:21px;font-weight:800;letter-spacing:1.6px}.brand-mark{background:var(--teal);color:white;width:43px;height:43px;border-radius:12px;display:grid;place-items:center;font-size:38px;line-height:1}.brand-light{font-weight:400}.brand small{display:block;font-size:10px;letter-spacing:1.4px;margin-top:5px;color:var(--muted);font-weight:500}.mast-meta{font-size:12px;display:flex;align-items:center;gap:9px;color:var(--muted)}.divider{margin:0 12px;color:#b1bfbe}.online-dot,.live-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#65bc9b}.live-dot{box-shadow:0 0 0 4px #63b39a18;margin-right:10px}main{max-width:1440px;margin:auto;padding:0 32px}.intro{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:42px 0 30px}.eyebrow{font-size:10px;letter-spacing:2px;color:var(--teal);font-weight:700;margin:0 0 12px}h1{font-size:40px;letter-spacing:-1px;margin:0;font-weight:750}.intro-copy{font-size:14px;color:var(--muted);margin:13px 0 0}.course-tag{border-left:2px solid #b5cfbf;padding:4px 0 4px 20px;display:flex;flex-direction:column;gap:8px;font-size:12px}.course-tag span{color:var(--muted);font-size:10px}.course-tag strong{font-weight:500}.course-tag small{font-size:10px;color:var(--muted)}.tabs{display:flex;border-bottom:1px solid var(--line);gap:30px}.tab{padding:17px 5px;border:0;background:transparent;color:var(--muted);font-size:16px;border-bottom:3px solid transparent;margin-bottom:-1px}.tab>span:first-child{font-size:11px;margin-right:10px;color:#8c9d9b;font-variant-numeric:tabular-nums}.tab.active{border-bottom-color:var(--teal);color:var(--teal);font-weight:700}.tab.active>span:first-child{color:var(--teal)}.tab-note{font-size:10px;font-weight:400;margin-left:18px}.session-bar{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:27px 0 21px}.role-tag{font-size:10px;color:var(--teal);background:#e3ede7;border-radius:4px;padding:4px 7px;vertical-align:middle;margin-right:9px}h2{font-size:20px;margin:0;display:inline-block}.session-bar p{font-size:12px;color:var(--muted);margin:10px 0 0;line-height:1.7}.session-tools{display:flex;gap:9px;align-items:center;flex-shrink:0}.score{color:var(--muted);font-size:10px;margin-right:12px}.score strong{font-size:27px;color:var(--teal);font-weight:500}.score small{display:block;font-size:9px;margin-top:1px}.quiet{background:transparent;border:1px solid #ccd8d4;border-radius:7px;padding:9px 12px;font-size:11px;color:var(--ink)}.workspace{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(320px,1fr);gap:20px;align-items:start}.plant-card{border-radius:var(--radius);overflow:hidden;background:var(--navy);color:#e9f3f3;box-shadow:0 4px 12px #112e3d0a}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:20px 22px;font-size:13px}.micro{font-size:10px;font-weight:400;color:#9aafba;margin-left:13px}.state-badge{font-size:10px;background:#ffffff12;border:1px solid #ffffff17;border-radius:20px;padding:5px 9px;color:#a5d8c8}.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:0 22px 15px;gap:15px}.metric{padding:5px 0 5px 15px;border-left:1px solid #ffffff1a}.metric:first-child{padding-left:0;border-left:0}.metric-label{font-size:10px;color:#a4b9c3;display:block;margin-bottom:9px}.metric strong{font-family:"Segoe UI",sans-serif;font-weight:500;font-size:25px;letter-spacing:.3px;font-variant-numeric:tabular-nums}.metric small{font-size:10px;color:#a4b9c3;margin-left:5px}.diagram{background:radial-gradient(ellipse at 50% 50%,#25495b44,transparent 70%);padding:0 6px}.diagram svg{display:block;width:100%;height:auto;max-height:370px}.diagram text{font-family:"Microsoft YaHei","Segoe UI",sans-serif}.diagram-footer{padding:13px 22px 17px;display:flex;justify-content:space-between;gap:10px;color:#99b1bd;font-size:9px;border-bottom:1px solid #ffffff12}.key{display:inline-block;height:6px;width:6px;border-radius:50%;margin-right:6px}.water{background:#5cb8df}.mechanism{background:#e5b365}.equipment-status{display:flex;gap:10px;flex-wrap:wrap;padding:18px 22px 8px}.equipment-status span{font-size:10px;color:#a4b8c1}.equipment-status b{font-weight:500;color:#e5f3f2;margin-left:7px}.process-note{font-size:11px;line-height:1.8;color:#a1c0c8;margin:5px 22px 19px;padding-left:10px;border-left:2px solid #539c92;min-height:40px}.decision-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding-bottom:17px}.decision-card .panel-heading{padding-bottom:16px}.decision-card .micro{margin-left:0;color:var(--muted)}.actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 19px}.action{border:1px solid #dce6e2;background:#f9fbf9;text-align:left;border-radius:8px;color:var(--ink);padding:11px 12px;font-size:12px;min-height:44px}.action.primary{background:var(--teal);border-color:var(--teal);color:#fff}.action.emergency{background:#fff3f0;color:var(--red);border-color:#eec6bd}.action-symbol{display:inline-block;margin-right:8px;font-size:13px;opacity:.75}.feedback-box{margin:16px 19px 0;padding:13px 14px;border-radius:8px;background:#eef5f1;border:1px solid #dcece3;font-size:11px;line-height:1.8;color:#38695e}.feedback-box strong{font-size:11px}.feedback-box p{margin:4px 0 0}.feedback-box.blocked{background:#fff4e7;border-color:#f1d8ad;color:#946028}.feedback-box button{border:0;background:none;color:#9d6125;padding:5px 0 0;font-size:11px;text-decoration:underline;text-underline-offset:3px}.hint-button{background:none;border:0;color:var(--teal);padding:13px 20px 3px;font-size:11px;display:flex;align-items:center;gap:10px}.hint-button small{font-size:9px;color:#92a29a}.checks-heading{display:flex;justify-content:space-between;align-items:center;margin:19px 20px 10px;border-top:1px solid #e8eeea;padding-top:15px}.checks-heading h3{font-size:12px;margin:0}.checks-heading span{font-size:9px;color:var(--muted)}.checks{list-style:none;padding:0 20px;margin:0;display:grid;grid-template-columns:1fr;gap:7px}.checks li{font-size:10px;display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--muted)}.checks li .check-state{font-size:9px;color:#9b8c73}.checks li.passed .check-state{color:var(--teal)}.checks li .check-state:before{content:'○';margin-right:5px}.checks li.passed .check-state:before{content:'✓'}.completion{display:flex;align-items:center;justify-content:space-between;margin-top:20px;background:#e0efe5;padding:21px 25px;border:1px solid #bfd9c8;border-radius:12px;gap:20px}.completion span{font-size:10px;color:var(--teal)}.completion h3{margin:6px 0;font-size:17px}.completion p{font-size:12px;margin:0;color:#537768;line-height:1.7}.solid{border:0;background:var(--teal);color:white;border-radius:7px;font-size:12px;padding:12px 17px;white-space:nowrap}.scenario-strip{margin:22px 0;display:flex;justify-content:space-between;align-items:center;gap:18px;padding:18px 22px;background:#edf0eb;border:1px solid var(--line);border-radius:11px}.scenario-strip h3{font-size:12px;margin:0 0 5px}.scenario-strip p{font-size:10px;color:var(--muted);margin:0}.scenario-strip #scenarios{display:flex;gap:8px;flex-wrap:wrap}.scenario-strip button{border:1px solid #cfdcd2;border-radius:6px;background:#f8faf6;font-size:10px;color:#567263;padding:8px 11px}.scenario-strip button.selected{background:#d8e9de;color:#165c4e;border-color:#a2c7b0}.review-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:20px}.record-card,.principle-card{border:1px solid var(--line);background:#fff;border-radius:var(--radius)}.text-button{border:0;background:none;color:var(--teal);font-size:10px;padding:0}.log{margin:0 22px;padding:0;list-style:none;max-height:195px;min-height:160px;overflow:auto;scrollbar-width:thin;scrollbar-color:#ccd9d4 transparent}.log li{display:flex;gap:12px;padding:9px 0;border-bottom:1px solid #f0f3ef;font-size:10px;line-height:1.7}.log time{color:#8fa29c;font-variant-numeric:tabular-nums;min-width:45px}.log li.blocked{color:#a76b30}.log li.automatic{color:var(--teal)}.log li.milestone{color:#2a806c}.milestones{padding:14px 22px 18px;display:flex;flex-wrap:wrap;gap:5px;border-top:1px solid #edf2ed;margin-top:12px}.milestones span{font-size:9px;color:#477a68;background:#eef5ef;border-radius:4px;padding:4px 7px}.principle-card{padding:22px 25px}.principle-card h3{font-size:18px;margin:0 0 12px}.principle-card p:not(.eyebrow){color:var(--muted);font-size:11px;line-height:1.9;margin:8px 0}.principle-card .source{font-size:10px;color:var(--teal);background:#f0f5ef;padding:8px 10px;border-radius:5px;margin-top:14px}.principle-card details{font-size:11px;border-top:1px solid #e4ebe5;margin-top:15px;padding-top:13px;color:#61796d;line-height:1.9}.principle-card summary{cursor:pointer}.principle-card details ul{padding-left:15px;font-size:10px}footer{display:flex;justify-content:space-between;gap:15px;padding:27px 0 25px;color:#85938d;font-size:9px}footer b{margin:0 8px;font-weight:400}dialog{padding:27px;border:1px solid #e3c8a9;border-radius:16px;max-width:520px;width:calc(100% - 32px);color:var(--ink);box-shadow:0 24px 100px #142e4750}dialog::backdrop{background:#112e3dc7;backdrop-filter:blur(5px)}.dialog-top{display:flex;justify-content:space-between;align-items:center;font-size:9px;color:var(--amber);letter-spacing:1px}.dialog-top button{border:0;background:transparent;font-size:26px;color:var(--muted)}dialog h2{margin:20px 0;font-size:23px}dialog p{font-size:13px;line-height:1.9}.risk-scene{display:flex;align-items:center;justify-content:space-around;background:#fff0dc;border:1px solid #edd9b6;height:100px;border-radius:10px;font-size:24px;color:#b5813b}.risk-valve{font-size:60px;animation:shake .2s infinite alternate}.risk-wave{animation:flow 1s infinite linear}.risk-note{font-size:11px;color:var(--muted);line-height:1.9;background:#f4f6f2;padding:13px;border-radius:6px;margin:18px 0}.flowing{stroke-dasharray:10 12;animation:dash 1.3s linear infinite}.diagram .flow-off{opacity:0}.paused .diagram .flowing{animation-play-state:paused}@keyframes dash{to{stroke-dashoffset:-44}}@keyframes shake{to{transform:translateX(3px) rotate(4deg)}}@keyframes flow{50%{opacity:.4}}
@media(min-width:1500px){.diagram svg{max-height:410px}}
@media(max-width:1100px){.tab-note{display:none}.workspace{grid-template-columns:minmax(0,1.4fr) minmax(300px,1fr)}.metrics{gap:7px}.metric{padding-left:9px}.metric strong{font-size:22px}.session-tools{gap:6px}.course-tag{max-width:280px}.masthead{padding:0 25px}main{padding:0 25px}.equipment-status{gap:9px}.diagram-footer{font-size:8px}}
@media(max-width:850px){.workspace{grid-template-columns:1fr}.decision-card .checks{grid-template-columns:1fr 1fr;gap:9px 20px}.actions{grid-template-columns:repeat(3,1fr)}.review-grid{grid-template-columns:1fr 1fr}.course-tag{display:none}.diagram svg{max-height:370px}.session-bar{align-items:flex-start}.session-tools{flex-wrap:wrap;justify-content:flex-end}.score{width:100%;text-align:right}.scenario-strip{flex-direction:column;align-items:flex-start}}
@media(max-width:560px){.masthead{padding:0 18px;height:76px}.mast-meta{font-size:9px}.mast-meta .divider,.mast-meta .divider+span{display:none}.mast-meta{max-width:90px;line-height:1.5;flex-wrap:wrap}.brand{font-size:17px;gap:9px}.brand-mark{width:35px;height:35px}.brand small{font-size:8px;letter-spacing:.5px}main{padding:0 16px}.intro{padding:28px 0 23px}.eyebrow{font-size:8px;letter-spacing:1.2px}h1{font-size:33px}.intro-copy{font-size:11px;line-height:1.7}.tabs{gap:20px}.tab{font-size:14px;padding:14px 0}.tab>span:first-child{font-size:10px;margin-right:6px}.session-bar{padding:20px 0 16px;flex-direction:column;gap:12px}.session-bar h2{font-size:18px}.session-bar p{font-size:11px}.session-tools{width:100%;align-items:center;justify-content:flex-start}.score{width:auto;text-align:left;display:flex;align-items:baseline;gap:3px;margin-right:auto}.score strong{font-size:22px}.score small{display:none}.quiet{font-size:10px;padding:8px 10px}.panel-heading{padding:16px;font-size:12px}.panel-heading .micro{font-size:8px;margin-left:7px}.state-badge{font-size:8px}.metrics{padding:0 15px 10px;gap:5px}.metric{padding-left:7px}.metric strong{font-size:20px}.metric-label{font-size:8px;margin-bottom:5px}.metric small{font-size:8px;margin-left:2px}.diagram{padding:0}.diagram-footer{padding:10px 15px;flex-wrap:wrap;font-size:8px}.equipment-status{padding:15px 16px 6px}.equipment-status span{font-size:9px}.process-note{font-size:10px;margin:5px 16px 15px}.actions{grid-template-columns:1fr 1fr;padding:0 16px}.action{font-size:12px}.checks li{font-size:9px}.checks li .check-state{font-size:8px}.decision-card .checks{grid-template-columns:1fr}.review-grid{grid-template-columns:1fr}.scenario-strip{padding:16px}.scenario-strip p{line-height:1.8}.completion{align-items:flex-start;flex-direction:column;padding:18px}.completion h3{font-size:16px}.completion p{font-size:11px}footer{flex-direction:column;gap:8px;font-size:8px}.principle-card{padding:20px}.record-card .panel-heading{padding:18px 22px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}