:root{--ink:#102338;--sub:#52677d;--muted:#748699;--accent:#1765a4;--accent2:#0d8c86;--border:#d9e4ed;--bg:#f3f7fb;--white:#fff;--soft:#eaf3fc;--good:#126b58;--warn:#885522;--bad:#a94343;--shadow:0 10px 35px rgba(27,55,82,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);font:16px/1.7 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",Arial,sans-serif;color:var(--ink)}button,select,input{font:inherit}button{cursor:pointer}a{color:#125b97}a:hover{text-decoration-thickness:2px}
.shell{display:grid;grid-template-columns:275px minmax(0,1fr);min-height:100vh}.side{background:#10283f;color:#e5eff9;position:sticky;top:0;height:100vh;overflow-y:auto;padding:25px 19px}.brand{font-size:21px;font-weight:800;letter-spacing:.2px;color:#fff;margin:0 0 2px}.brand small{display:block;font-size:12px;font-weight:500;color:#a4c7e1}.side .over{font-size:12px;text-transform:uppercase;letter-spacing:1.5px;color:#8fb9d7;margin:25px 5px 8px}.nav{display:block;width:100%;text-align:left;background:transparent;color:#dceefb;border:none;border-radius:10px;padding:12px;margin:3px 0;font-size:14px}.nav:hover,.nav.active{background:#22516d;color:#fff}.nav span{display:block;font-size:12px;color:#acc5d9}.sidetip{border-top:1px solid #37546c;font-size:12px;margin-top:25px;padding-top:15px;color:#abc5d6}.mobile-head{display:none}.content{max-width:1520px;width:100%;padding:25px clamp(18px,4vw,70px) 90px;margin:0 auto}.top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:space-between;margin-bottom:24px}.tiny{font-size:12px;color:var(--muted)}.pills{display:flex;gap:8px;flex-wrap:wrap}.pill{border-radius:999px;padding:6px 11px;background:#fff;color:var(--sub);border:1px solid var(--border);font-size:13px}.hero{background:linear-gradient(125deg,#113c60,#146d88);border-radius:19px;color:white;padding:34px 40px;box-shadow:var(--shadow);position:relative;overflow:hidden}.hero h1{color:white;font-size:clamp(29px,3vw,45px);line-height:1.3;margin:5px 0 14px}.hero p{max-width:820px;color:#dfedf7;font-size:17px}.hero .mini{font-size:13px;letter-spacing:1px;color:#b8e5f0}.hero:after{content:"";width:260px;height:260px;border:45px solid rgba(255,255,255,.08);position:absolute;right:-105px;top:-65px;border-radius:50%;pointer-events:none}
section.panel{display:none;animation:rise .16s ease-out}section.panel.active{display:block}@keyframes rise{from{opacity:.55;transform:translateY(6px)}to{opacity:1;transform:none}}
.sectiontitle{display:flex;gap:14px;align-items:center;margin:20px 0 12px}.sectiontitle h2{margin:0;font-size:clamp(23px,2.4vw,31px);line-height:1.3}.sectiontitle .num{display:grid;place-items:center;background:#d9edfa;color:#165a90;font-size:21px;font-weight:800;min-width:50px;height:50px;border-radius:13px}.de{color:#175178;font-weight:660}.zh{color:var(--ink)}.paired{margin-bottom:15px}.paired .de,.paired .zh{margin:0}.section-sub{color:var(--sub);margin:0 0 22px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:15px}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.card{background:var(--white);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:15px;padding:22px;min-width:0}.card h3{font-size:19px;line-height:1.4;margin:0 0 12px}.card h4{font-size:16px;margin:12px 0 6px}.metric{font-weight:800;font-size:31px;color:#125c92}.small{font-size:14px}.muted{color:var(--sub)}.notice{background:#e9f5f8;border-left:4px solid #188d91;color:#194653;padding:15px 18px;border-radius:8px;margin:17px 0}.caution{background:#fff3e6;border-left:4px solid #cd8240;color:#694923;padding:15px 18px;border-radius:8px;margin:17px 0}.critical{background:#fff0f0;border-left:4px solid #bf5e5e;color:#713b3b;padding:15px 18px;border-radius:8px;margin:17px 0}.btn{background:#155f98;border:1px solid #155f98;border-radius:9px;color:#fff;padding:10px 15px;white-space:normal;line-height:1.35;min-height:42px}.btn:hover{background:#124d7a}.btn.light{background:#fff;color:#145d91;border-color:#b5cee0}.btn.light:hover{background:#eef7fd}.btn.red{color:#ab4343;border-color:#dbb9b9;background:#fff}.btn.green{background:#077c70;border-color:#077c70}.btnrow{display:flex;gap:8px;flex-wrap:wrap}.stat{color:var(--accent);font-weight:750}.tags{display:flex;gap:7px;flex-wrap:wrap}.tag{font-size:12px;border-radius:5px;background:#eaf3f9;padding:3px 8px;color:#245472}.tag.warn{background:#fff1e1;color:#8d521f}.split{display:grid;grid-template-columns:minmax(0,1.22fr) minmax(320px,.78fr);gap:18px;align-items:start}input[type="number"]{width:115px;max-width:100%;border:1px solid #aebfd0;border-radius:8px;padding:9px;color:#1c3e5e;background:white}select{max-width:100%;border:1px solid #afc4d2;border-radius:9px;padding:9px;background:#fff;color:var(--ink)}input[type="checkbox"]{width:19px;height:19px;accent-color:var(--accent)}label{cursor:pointer}.checkline{display:flex;gap:10px;align-items:start;margin:11px 0}.checkline span{flex:1}.kbd{display:inline-block;border:1px solid #beceda;background:#f2f5f8;border-radius:5px;padding:0 6px;font-size:13px}details{background:white;border:1px solid var(--border);border-radius:11px;margin:12px 0;padding:15px 18px}summary{cursor:pointer;font-weight:750;color:#205a80}details p{margin:9px 0}.stdrow{padding:16px;border-bottom:1px solid var(--border)}.stdrow:last-child{border:none}.stdhead{display:flex;align-items:center;justify-content:space-between;gap:10px}.stdcode{font-weight:800;color:#175985;font-size:16px}
.tabs{display:flex;gap:9px;flex-wrap:wrap;margin:20px 0 13px}.tabs button{border-radius:9px;background:#fff;border:1px solid #ccdae3;padding:10px 14px;color:#24475c}.tabs button.current{border-color:#185b8d;color:#12578c;background:#ddebfa;font-weight:750}.lessonsteps{counter-reset:step}.step{display:flex;gap:15px;margin:12px 0;padding:13px 0;border-bottom:1px solid #e4edf4}.step .bubble{background:#dcecf7;color:#166491;font-weight:850;font-size:17px;border-radius:50%;height:37px;width:37px;display:grid;place-items:center;flex:none}.step .text{flex:1}.step strong{display:block}.step p{margin:2px 0}.casesel{display:flex;flex-wrap:wrap;gap:8px;margin:15px 0}.casebtn{width:43px;height:43px;border-radius:9px;background:white;border:1px solid #bccbd8;color:#285673;font-weight:750}.casebtn.current{background:#185f94;border-color:#185f94;color:white}.roomsel{display:flex;gap:7px;flex-wrap:wrap}.roomsel button{border:1px solid #c8d7e1;padding:9px 11px;background:#fff;border-radius:8px;text-align:left;color:#19445f}.roomsel button.current{background:#e0f3f2;color:#046d69;border-color:#07887d}.planframe{background:#fff;max-width:100%;width:100%;border:1px solid #bed0df;border-radius:13px;overflow:hidden;min-height:300px}.planframe svg{display:block;width:100%;height:auto;max-height:65vh;cursor:crosshair;touch-action:manipulation}.planframe svg text{font-family:system-ui,'Segoe UI','Microsoft YaHei',sans-serif}.plan-toolbar{background:#f0f6fb;display:flex;gap:8px;flex-wrap:wrap;padding:10px;border-radius:8px;margin-bottom:11px;align-items:center}.plan-toolbar .btn{padding:7px 11px;min-height:36px;font-size:13px}.legend{font-size:13px;display:flex;gap:14px;flex-wrap:wrap;color:#49677a}.legend b{font-weight:850}.dot{display:inline-block;width:13px;height:13px;border:2px solid #0877ac;border-radius:50%;vertical-align:middle}.dot.heat{border-color:#b7692f}.marker{pointer-events:all;cursor:pointer}.marker:hover{filter:brightness(.7)}.result{padding:16px;background:#f3f8fc;border-radius:10px;color:#224963}.result strong{font-size:16px}.calc{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.calc .cell{background:#f1f7fb;border-radius:9px;padding:12px}.calc .cell b{font-size:23px;color:#145f92;display:block}.system{background:#fff;border:1px solid #d6e1e9;border-radius:14px;overflow:hidden}.system svg{display:block;width:100%;height:auto}.highlight{background:#e7f5fb;border-radius:9px;padding:13px;margin:9px 0}.listreset{padding-left:22px}.listreset li{margin:7px 0}.scenariohint{background:#fffaf1;border:1px solid #f2dec3;border-radius:10px;padding:14px}.progressbar{height:10px;border-radius:99px;background:#dce6ee;overflow:hidden}.progressbar div{height:100%;background:linear-gradient(90deg,#2b96b7,#0a8377);transition:width .2s}.timer{font-variant-numeric:tabular-nums;font-size:33px;font-weight:800;color:#165e8f}.examquestion{border-left:4px solid #4c8eb8;padding:10px 15px;margin:16px 0;background:#f2f8fc}.floor-note{color:#5a7084;font-size:13px;margin:3px 0}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;padding:11px;border-bottom:1px solid #dce5ed;vertical-align:top}th{background:#eaf2f7;color:#234c68}table td:first-child{font-weight:700}.sources a{overflow-wrap:anywhere}.foot{font-size:13px;color:#698099;margin:40px 0 0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:1100px){.shell{grid-template-columns:215px minmax(0,1fr)}.side{padding:20px 12px}.split{grid-template-columns:1fr}}
@media(max-width:800px){.shell{display:block}.side{position:relative;height:auto;padding:14px}.side .over,.side .sidetip{display:none}.side .brand{font-size:16px}.side .navbox{display:flex;overflow:auto;gap:6px;padding:8px 0}.side .nav{width:auto;white-space:nowrap;font-size:13px;padding:8px 12px}.side .nav span{display:none}.content{padding:16px}.hero{padding:22px}.grid2{grid-template-columns:1fr}.card{padding:17px}.planframe svg{max-height:none}table{font-size:12px}th,td{padding:7px}}
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.gemini-merge{margin-top:20px;border:2px solid #aac5dd;background:#f8fbff;border-radius:14px;padding:22px}.gemini-merge table,.matrixtable{width:100%;border-collapse:collapse;font-size:13px}.gemini-merge th,.gemini-merge td,.matrixtable th,.matrixtable td{border:1px solid #d3dfeb;padding:9px;vertical-align:top;text-align:left}.gemini-merge th,.matrixtable th{background:#e7f2fc}.gemini-merge .source-note{font-size:12px;color:#61758a}.answer-block{padding:14px;border-left:4px solid #2877a8;background:#eef5fb;margin:10px 0;border-radius:5px}.model-flow{width:100%;height:auto;max-height:410px;background:white;border:1px solid #d4e1eb;border-radius:12px}.matrix-scroll{overflow:auto}.matrix-scroll .matrixtable{min-width:1050px}.memory-box{padding:12px 15px;background:#f1f6fc;border:1px solid #b6cddd;border-radius:8px;white-space:pre-line;margin-top:8px}