:root{--navy:#082f75;--blue:#1669db;--cyan:#479df2;--soft:#eef7ff;--line:#bcddfb;--muted:#5274ac;font-family:"PingFang SC","Microsoft YaHei","Heiti TC",Arial,sans-serif;color:var(--navy);background:#f3f8ff}*{box-sizing:border-box}body{margin:0}a{color:var(--blue);text-underline-offset:4px}button{font:inherit;cursor:pointer;color:var(--navy)}button:disabled{opacity:.35;cursor:default}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.skip{position:absolute;top:-70px;left:12px;background:white;padding:12px;z-index:50}.skip:focus{top:10px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px;padding:13px 4vw;background:white;border-bottom:1px solid var(--line)}.brand{font-size:20px;font-weight:800;text-decoration:none;color:var(--navy)}.brand span{display:block;font-size:11px;letter-spacing:1px;font-weight:400;margin-top:5px;color:var(--muted)}.site-header nav{display:flex;align-items:center;gap:24px;font-size:13px}.site-header nav a{text-decoration:none}.site-header button{border:1px solid var(--line);background:var(--soft);border-radius:5px;padding:8px 12px;font-size:12px}#stage{max-width:1440px;margin:24px auto 0;padding:0 24px}.slide{background:white url("assets/theme.png") no-repeat center/100% 100%;padding:31px 40px 25px;min-height:690px;border:1px solid var(--line);box-shadow:0 14px 50px #082f750c;position:relative}.js .slide{display:none}.js .slide.active{display:block}.slide-header{padding-right:190px}.eyebrow{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:13px;letter-spacing:1px;margin:0 0 22px}.eyebrow span{color:var(--blue);font-size:12px;white-space:nowrap}h1{font-size:clamp(30px,3.65vw,49px);line-height:1.25;font-weight:900;letter-spacing:-1px;margin:0 0 19px}p{margin:0;line-height:1.55}.lead{font-size:20px;color:var(--muted);max-width:1120px;margin-bottom:30px}.diagram{min-height:320px}.two-panels{display:grid;grid-template-columns:1fr 1fr;gap:48px}.panel{border:1px solid var(--line);border-radius:14px;background:linear-gradient(120deg,#f5fbff,#eef7ff);overflow:hidden}.panel>h2{background:linear-gradient(100deg,#0c479c,#57a8f6);color:white;font-size:23px;padding:13px 22px;margin:0;font-weight:700}.panel-body{padding:20px 24px}.panel-item{margin-bottom:15px}.panel-item:last-child{margin-bottom:0}.panel h3{font-size:20px;line-height:1.4;margin:0 0 5px}.panel p{font-size:16px;color:var(--muted)}.takeaway{background:#f4faffdd;border:1px solid var(--line);border-radius:10px;font-size:18px;color:var(--navy);font-weight:700;padding:18px 23px;margin:24px 0 25px;line-height:1.65}.slide-byline{display:flex;justify-content:space-between;gap:24px;font-size:12px;color:var(--blue)}.slide-byline span{font-size:10px;color:var(--muted)}.cards{display:flex;align-items:stretch;gap:18px}.card{border:1px solid var(--line);border-radius:14px;background:linear-gradient(120deg,#eaf6ff,#f7fbff);padding:21px 22px;flex:1;min-width:0}.card h2{font-size:24px;line-height:1.3;margin:9px 0 14px;font-weight:800}.card-sub{font-size:19px;font-weight:700;color:var(--blue);margin-bottom:14px}.card>p:last-child{font-size:17px;color:var(--muted);line-height:1.65}.step-number{font-size:16px;font-weight:800;color:var(--cyan)}.flow-arrow{font-size:29px;align-self:center;color:var(--cyan);flex-shrink:0}.formula{border:1px solid var(--line);border-radius:14px;background:#f5faff;margin-bottom:22px;padding:16px 22px}.formula h2{font-size:17px;color:var(--blue);margin:0 0 12px}.formula>p{font-size:21px;font-weight:800}.formula>div{display:flex;justify-content:space-between;gap:12px;margin-top:14px}.formula>div span{display:flex;flex-direction:column;text-align:center;flex:1;font-size:12px}.formula b{font-weight:500;color:var(--muted)}.formula small{font-size:14px;color:var(--blue);margin-top:5px}.progression .card{padding:16px 18px;text-align:center}.progression .card h2{font-size:27px;margin:8px 0 14px}.progression .step-number{display:none}.diagram-label{font-size:21px;color:white;background:linear-gradient(100deg,#0c479c,#57a8f6);border-radius:8px;padding:12px 19px;margin:0 0 20px}.five-steps{gap:9px;margin-bottom:24px}.five-steps .card{padding:17px 15px}.five-steps .card h2{font-size:23px}.five-steps .card>p:last-child{font-size:16px}.five-steps .flow-arrow{font-size:21px}.kind-workflow .panel>h2{font-size:19px;padding:10px 16px;background:#e5f3ff;color:var(--blue)}.kind-workflow .panel-body{padding:12px 16px}.kind-workflow .two-panels{gap:20px}.case-layout{display:grid;grid-template-columns:1.1fr 1.3fr;gap:24px}.case-layout .two-panels{gap:14px}.case-layout .panel>h2{font-size:20px;padding:12px 17px}.case-layout .panel-body{padding:15px}.case-layout .panel h3{font-size:19px}.case-layout .panel p{font-size:15px}.case-label{font-size:18px;color:var(--blue);margin:0 0 14px}.result{font-size:17px;color:var(--blue);font-weight:700;margin-top:20px}table{border-collapse:separate;border-spacing:0;width:100%;font-size:17px;border:1px solid var(--line);border-radius:10px;overflow:hidden}thead{background:linear-gradient(100deg,#0c479c,#57a8f6);color:white}th,td{text-align:left;padding:15px 18px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);line-height:1.55;vertical-align:middle}tbody th{background:#eaf6ff;color:var(--navy);font-weight:700}tbody td{background:#ffffffda}tr:last-child th,tr:last-child td{border-bottom:0}th:last-child,td:last-child{border-right:0}.matrix{font-size:21px}.matrix th,.matrix td{padding:22px 26px}.matrix th:first-child{width:25%}.matrix td{width:37.5%;line-height:1.95}.package-root{max-width:490px;text-align:center;margin:0 auto 12px;font-size:25px;font-weight:800;border:1px solid var(--line);border-radius:10px;background:#e3f2ff;padding:11px;color:var(--blue)}.package-branches{height:24px;width:76%;border-top:2px solid var(--line);margin:24px auto 0}.package-cards{gap:20px}.package-cards .flow-arrow{display:none}.package-cards .card{padding:18px 17px}.package-cards .card h2{font-size:24px}.package-cards .card-sub{font-size:16px}.package-cards .card>p:last-child{font-size:15px}.package-cards .step-number{display:none}.optional{margin-top:21px;font-size:17px;color:var(--blue);font-weight:700}.four-steps .card{padding:24px 18px}.four-steps .card h2{font-size:25px}.four-steps .card>p:last-child{font-size:18px}.inline-prompt{font-size:17px;margin-top:26px;color:var(--blue);line-height:1.75}.verification .card{padding:24px}.verification .card h2{font-size:28px}.verification .card-sub{font-size:19px}.verification .step-number{display:none}.case-strip{display:flex;gap:28px;margin-top:24px}.case-strip>div{flex:1;background:#f8fbff;border:1px solid var(--line);border-radius:10px;padding:14px 20px;display:flex;flex-direction:column;gap:8px}.case-strip b{font-size:18px;color:var(--blue)}.case-strip span{font-size:16px;color:var(--muted)}.practice-layout{display:grid;grid-template-columns:1.15fr 1fr;gap:34px}.practice-steps{padding:23px}.practice-steps>div{display:flex;gap:22px;margin-bottom:22px;align-items:flex-start}.practice-steps>div:last-child{margin-bottom:0}.practice-steps>div>span{font-size:29px;color:var(--cyan);font-weight:800}.practice-steps h3{font-size:21px;margin:0 0 6px}.practice-steps p{font-size:17px}.feedback-panel .panel-body{padding:26px}.feedback-panel h3{font-size:30px;margin-bottom:30px;max-width:420px}.feedback-panel p{font-size:19px;margin-bottom:13px;color:var(--blue)}.deck-controls{display:flex;justify-content:space-between;align-items:center;max-width:1376px;margin:15px auto 20px;padding:0 24px}.deck-controls button{border:1px solid var(--line);border-radius:6px;background:white;padding:10px 18px;font-size:13px}#contents-toggle{border:0;background:transparent;color:var(--muted)}#page-counter{margin-left:20px;color:var(--blue)}#contents{position:fixed;bottom:90px;left:50%;transform:translateX(-50%);width:560px;max-width:94vw;background:white;padding:15px 28px;border:1px solid var(--line);border-radius:10px;box-shadow:0 20px 80px #082f752a;z-index:10}#contents a{display:block;text-decoration:none;padding:10px 0;font-size:15px}.extras{margin-top:20px;background:#fff9;display:flex;align-items:flex-start;gap:20px;font-size:14px}.extras>a{padding-top:8px;white-space:nowrap}.prompt{max-width:100%}summary{cursor:pointer;color:var(--blue);padding:8px 0}.prompt pre,pre{font-family:"SFMono-Regular",Consolas,monospace;white-space:pre-wrap;word-break:break-word;background:var(--soft);border:1px solid var(--line);padding:16px;font-size:14px;line-height:1.8}.prompt button{border:1px solid var(--line);background:white;padding:7px 13px}.copy-status{padding-left:10px;color:var(--muted)}.reading{max-width:940px;margin:auto;padding:44px 30px;background:white}.reading h1{font-size:41px}.reading h2{font-size:26px;margin:38px 0 16px}.reading p,.reading li{font-size:17px;line-height:1.85;margin-bottom:14px}.reading section{padding-bottom:16px;border-bottom:1px solid var(--line)}.reading table{font-size:15px}.reading table td{line-height:1.6}.text-link{font-weight:700}.byline{padding:20px 30px;display:flex;gap:20px;justify-content:space-between;color:var(--muted);font-size:12px}html:fullscreen .site-header{display:none}html:fullscreen #stage{margin-top:12px}
@media(max-width:850px){.site-header{padding:16px 22px;align-items:flex-start;gap:12px}.brand{font-size:15px}.brand span{font-size:9px;max-width:150px;line-height:1.6}.site-header nav{gap:11px;flex-wrap:wrap;justify-content:flex-end;font-size:12px;max-width:170px}.site-header button{display:none}#stage{margin:18px 0 0;padding:0 16px}.js .slide,.js .slide.active{display:block}.slide{padding:26px 19px 35px;margin-bottom:26px;min-height:0;scroll-margin-top:20px;background-size:auto 100%;background-position:right top}.slide-header{padding-right:0;background:#ffffffc9}.eyebrow{font-size:10px;letter-spacing:0;margin-bottom:20px;gap:12px}h1{font-size:29px;line-height:1.35;letter-spacing:-.7px}.lead{font-size:17px;margin-bottom:26px}.diagram{min-height:0}.two-panels,.practice-layout,.case-layout{grid-template-columns:1fr;gap:20px}.panel>h2{font-size:20px;padding:12px 17px}.panel-body{padding:20px 18px}.panel h3{font-size:18px}.panel p{font-size:16px}.panel-item{margin-bottom:18px}.cards{flex-direction:column;gap:16px}.card{padding:22px}.card h2,.progression .card h2,.four-steps .card h2{font-size:24px}.card-sub{font-size:18px}.card>p:last-child,.four-steps .card>p:last-child{font-size:17px}.flow-arrow{transform:rotate(90deg);font-size:24px;align-self:center}.formula{padding:18px 16px}.formula>p{font-size:18px;line-height:1.8}.formula>div{flex-wrap:wrap;gap:16px}.formula>div span{flex-basis:40%;text-align:left;min-width:100px;font-size:12px}.formula small{font-size:14px}.formula>div span:last-child{flex-grow:0}.case-layout .two-panels{grid-template-columns:1fr}.case-label{font-size:17px}.case-layout .panel h3{font-size:19px}.case-layout .panel p{font-size:16px}table{font-size:15px}th,td{padding:12px 11px}.matrix{font-size:14px;table-layout:fixed}.matrix th,.matrix td{padding:13px 8px;line-height:1.9;word-break:normal;overflow-wrap:anywhere}.matrix th:first-child{width:27%}.matrix td{width:36.5%}.package-root{font-size:21px}.package-branches{display:none}.package-cards{margin-top:18px}.package-cards .card h2{font-size:25px}.package-cards .card-sub{font-size:18px}.package-cards .card>p:last-child{font-size:16px}.optional,.inline-prompt{font-size:16px}.case-strip{flex-direction:column;gap:12px}.verification .card h2{font-size:27px}.verification .card-sub{font-size:19px}.practice-steps{padding:20px 17px}.practice-steps>div{gap:16px}.practice-steps h3{font-size:19px}.practice-steps p{font-size:16px}.feedback-panel .panel-body{padding:22px}.feedback-panel h3{font-size:26px}.feedback-panel p{font-size:17px}.takeaway{font-size:16px;padding:16px;margin:24px 0}.slide-byline{font-size:11px;flex-direction:column;gap:8px}.slide-byline span{font-size:9px}.extras{display:block;padding-top:5px}.extras>*{display:block;margin-top:12px}.deck-controls{position:sticky;bottom:0;background:white;border-top:1px solid var(--line);padding:12px 22px;margin:0;gap:12px;z-index:9}.deck-controls button{padding:9px 12px}#contents{bottom:78px;max-height:70vh;overflow:auto}.reading{padding:30px 22px}.reading h1{font-size:31px}.reading h2{font-size:24px}.reading p,.reading li{font-size:16px}}
@media print{.site-header,.deck-controls,#contents,.extras{display:none!important}.js .slide{display:block!important;break-after:page}.slide{box-shadow:none;margin:0;border:0}#stage{margin:0;padding:0}}
