:root{color-scheme:dark;--bg:#08121a;--paper:#101e28;--ink:#e9f2f1;--muted:#a2b8be;--line:#2a414d;--action:#62e1c1;--action-ink:#092621;--amber:#efc98d;--brief:#f6f7f1;--brief-ink:#273938;font-family:"Microsoft YaHei UI","PingFang SC","Noto Sans SC",sans-serif;scroll-padding-top:24px}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-size:16px;line-height:1.65}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}a{color:inherit;text-decoration:none;text-underline-offset:5px}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible{outline:3px solid var(--action);outline-offset:5px}button:disabled{opacity:.4;cursor:default}button:disabled:hover{background:transparent}::selection{background:#62e1c1;color:#092621}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:#36505b;border-radius:5px}svg{width:20px;height:20px;flex-shrink:0;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;fill:none}.wrap{width:min(1200px,calc(100% - 80px));margin-inline:auto}.skip-link{position:fixed;top:-100px;left:16px;z-index:10;background:var(--action);color:var(--action-ink);padding:12px}.skip-link:focus{top:16px}.site-header{display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:104px}.brand{display:flex;gap:12px;align-items:center;font-size:23px;letter-spacing:.04em}.brand svg{width:32px;height:32px;stroke:none;color:var(--action)}.site-header nav{display:flex;align-items:center;gap:32px;font-size:14px}.site-header nav a{display:flex;align-items:center;gap:9px;min-height:44px}.intro{display:flex;justify-content:space-between;align-items:end;gap:40px;padding:56px 0 62px}.intro h1{font-size:clamp(44px,5.8vw,78px);font-weight:650;line-height:1.17;letter-spacing:-.025em;margin:0;text-wrap:balance}.intro-aside{max-width:440px;padding-bottom:6px}.intro-aside p{margin:0 0 22px;color:var(--muted);font-size:17px;line-height:1.9}.intro-action{display:inline-flex;align-items:center;gap:14px;min-height:44px;color:var(--action)}.demo{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--paper);scroll-margin-top:24px}.demo-bar{padding:22px 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line)}.demo-bar h2{font-size:18px;margin:0;font-weight:650}.demo-bar p{font-size:12px;color:var(--muted);margin:4px 0 0}.quiet-button{border:1px solid transparent;background:transparent;color:var(--muted);display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:8px 12px;border-radius:8px;font-size:13px}.quiet-button:hover{color:var(--ink);background:#162b35}.demo-body{display:grid;grid-template-columns:208px minmax(0,1fr);min-height:452px}.steps{padding:28px 16px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:10px}.steps button{display:flex;align-items:start;text-align:left;gap:14px;min-height:80px;padding:14px 12px;background:transparent;border:1px solid transparent;border-radius:9px;color:var(--muted);font-size:14px}.steps button small{display:block;font-size:11px;margin-top:6px;font-weight:400}.step-number{font-size:12px;font-variant-numeric:tabular-nums;padding-top:1px}.steps button:hover{background:#162b35;color:var(--ink)}.steps button[aria-current=step]{background:#143d3e;color:#b4ffea}.scene-frame{padding:30px 36px;min-width:0;align-self:center;overflow:hidden}.scene-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}.scene-heading h3{font-size:20px;line-height:1.4;margin:0;font-weight:650}.state{font-size:12px;white-space:nowrap;color:#b4ffea;background:#143d3e;border-radius:5px;padding:4px 9px}.state.wait{color:var(--amber);background:#342b22}.scene-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:30px;align-items:start}.sender{font-size:12px;color:var(--muted);margin:0 0 9px}.message{margin:0;padding:20px 22px;border-radius:6px 14px 14px 14px;background:#203742;font-size:15px;line-height:1.85;color:#e9f2f1}.message p{margin:0}.message em{font-style:normal;background:#36554e;box-shadow:0 0 0 3px #36554e;color:#b4ffea}.reading-note h4{font-size:14px;margin:0 0 10px}.reading-note p{font-size:13px;color:var(--muted);margin:0 0 14px}.open-question{color:var(--amber)!important;padding-top:14px;border-top:1px solid var(--line)}.scope-list{margin:0;padding:0;list-style:none}.scope-list li{padding:13px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:start;gap:14px}.scope-list li:first-child{padding-top:0}.scope-list li:last-child{border-bottom:0}.scope-list strong{font-size:14px;font-weight:600}.scope-list small{display:block;font-size:12px;color:var(--muted);margin-top:4px}.scope-list .item-money{font-variant-numeric:tabular-nums;white-space:nowrap;font-size:14px;color:var(--ink);font-weight:600}.evidence-button{font-size:12px;padding:3px 0;min-height:44px;border:0;color:var(--action);background:transparent;text-decoration:underline;text-underline-offset:4px}.evidence{margin:0;padding:10px 12px;background:#0b1822;font-size:12px;color:#b4ffea;border-radius:6px}.evidence[hidden]{display:none}.quote-total{display:flex;justify-content:space-between;align-items:end;padding-top:18px;margin-top:18px;border-top:1px solid var(--line);gap:16px}.quote-total span{font-size:12px;color:var(--muted)}.quote-total strong{font-size:29px;line-height:1.2;color:var(--action);font-variant-numeric:tabular-nums;font-weight:650}.paper{background:var(--brief);color:var(--brief-ink);padding:22px 24px;border-radius:8px}.paper h4{font-size:17px;margin:0 0 4px}.paper .paper-meta{color:#526865;font-size:12px;margin:0 0 14px}.paper dl{margin:0}.paper dl div{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-bottom:1px solid #cddbd5;font-size:13px}.paper dl dt,.paper dl dd{margin:0}.paper dl dd{text-align:right}.paper .paper-total{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:15px;font-size:13px}.paper .paper-total strong{font-size:25px;font-variant-numeric:tabular-nums;color:#1b3532}.reply-note{margin-top:0}.reply-note p{font-size:13px;color:var(--muted)}.reply-note h4{font-size:16px;margin:0 0 12px}.next-button{border:0;background:var(--action);color:var(--action-ink);padding:11px 17px;border-radius:8px;display:inline-flex;justify-content:center;align-items:center;gap:13px;min-height:44px;font-size:13px;font-weight:650}.next-button:hover{background:#a1f4dc;text-decoration:none}.next-button:disabled{background:#162b35;color:var(--muted)}.reply-success{color:#b4ffea!important}.compare{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px}.compare-side{padding:0 0 12px}.compare-side h4{font-size:15px;margin:0 0 16px}.compare-side p{font-size:13px;margin:10px 0;color:var(--muted)}.change-row{display:flex;gap:12px;justify-content:space-between;align-items:start;font-size:13px;min-height:45px;padding:10px 0;border-bottom:1px solid var(--line)}.change-row strong{font-weight:500}.change-row.add{background:#143d3e;padding:10px 12px;margin:0 -12px;border-radius:6px;border:0;color:#b4ffea}.change-row.add span{white-space:nowrap}.change-total{font-size:26px;color:var(--action);margin-top:15px;font-weight:650;font-variant-numeric:tabular-nums}.compare-note{font-size:12px;line-height:1.8;color:var(--amber);margin:18px 0 0}.demo-footer{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding:16px 24px}.demo-footer p{margin:0;color:var(--muted);font-size:12px;max-width:480px}.demo-footer>div{display:flex;align-items:center;gap:10px;flex-shrink:0}.principles{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:100px;padding:112px 0 96px}.principles-heading h2{font-size:clamp(26px,3vw,38px);font-weight:600;line-height:1.5;letter-spacing:-.02em;margin:0 0 25px}.principles-heading p{font-size:14px;color:var(--muted);max-width:330px;margin:0;line-height:1.9}.principles dl{margin:0}.principles dl div{padding-bottom:28px;margin-bottom:28px;border-bottom:1px solid var(--line)}.principles dl div:last-child{margin:0;border:0;padding:0}.principles dt{font-size:17px;font-weight:600;margin:0 0 8px}.principles dd{font-size:14px;margin:0;color:var(--muted);line-height:1.9;max-width:65ch}.closing{background:#143d3e;color:#b4ffea;border-radius:14px;padding:44px 48px;display:grid;grid-template-columns:1fr auto;gap:10px 30px;align-items:center}.closing h2{font-size:28px;font-weight:600;line-height:1.5;margin:0}.closing p{font-size:14px;margin:0;color:#b0d1c9;grid-column:1;max-width:65ch}.closing a{grid-column:2;grid-row:1 / 3}.closing .local-hint{font-size:12px;grid-column:1 / -1;padding-top:16px}.site-footer{display:flex;justify-content:space-between;gap:24px;padding:34px 0;color:var(--muted);font-size:11px}.no-script{padding:20px;color:var(--amber)}[hidden]{display:none!important}
.brand{min-height:44px}
@media(min-width:1400px){.scene-frame{padding:32px 40px}.demo-body{min-height:455px}}
@media(max-width:900px){.wrap{width:calc(100% - 48px)}.intro{gap:30px;padding:40px 0 45px}.intro-aside p{font-size:14px}.demo-body{grid-template-columns:170px minmax(0,1fr)}.scene-frame{padding:24px}.steps{padding:20px 10px}.steps button{gap:10px;font-size:12px}.steps button small{font-size:11px}.scene-grid{gap:20px}.principles{gap:48px;padding:72px 0}.demo-footer{gap:12px}.demo-footer p{max-width:310px}}
@media(max-width:650px){.wrap{width:calc(100% - 36px)}.site-header{min-height:80px;gap:12px}.brand{font-size:20px;gap:7px}.brand svg{width:27px;height:27px}.site-header nav{gap:18px;font-size:12px}.site-header nav a:first-child{display:none}.intro{display:block;padding:24px 0 32px}.intro h1{font-size:46px;line-height:1.25}.intro-aside{margin-top:22px;padding:0}.intro-aside p{font-size:14px;line-height:1.9;margin-bottom:8px}.intro-aside p br{display:none}.demo-bar{padding:18px 16px;gap:8px;align-items:start}.demo-bar h2{font-size:15px}.demo-bar p{font-size:11px;max-width:185px}.demo-body{display:block;min-height:0}.steps{border-right:0;border-bottom:1px solid var(--line);padding:12px 10px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:3px}.steps button{display:block;text-align:center;padding:9px 2px;min-height:60px;font-size:11px;line-height:1.5}.steps .step-number{display:block;font-size:11px;margin-bottom:3px}.steps small{display:none!important}.scene-frame{padding:24px 18px;min-height:438px}.scene-heading{gap:10px;margin-bottom:20px}.scene-heading h3{font-size:17px}.state{font-size:11px;padding:3px 6px}.scene-grid{display:block}.message{font-size:14px;padding:17px 18px}.reading-note{margin-top:23px}.reading-note p{font-size:12px;margin-bottom:9px}.reading-note .open-question{padding-top:10px}.quote-total{margin-top:14px;padding-top:14px}.quote-total strong{font-size:26px}.reply-note{margin-top:20px}.reply-note p{font-size:12px;margin:0 0 13px}.reply-note h4{font-size:14px;margin-bottom:8px}.reply-note .next-button{width:100%}.paper{padding:18px}.paper dl div{font-size:12px}.paper dl dt{flex-shrink:0}.paper dl dd{max-width:180px}.compare{gap:18px}.compare-side h4{font-size:13px}.compare-side p,.change-row{font-size:11px}.change-row{gap:8px;min-height:58px}.change-row.add{padding:8px;margin:0 -8px}.change-total{font-size:22px}.compare-note{font-size:11px;line-height:1.8}.demo-footer{display:block;padding:14px 16px}.demo-footer p{min-height:38px;margin-bottom:10px;max-width:none;line-height:1.65;font-size:11px}.demo-footer>div{justify-content:space-between}.demo-footer .next-button{font-size:12px}.principles{display:block;padding:64px 0}.principles-heading h2{font-size:29px;line-height:1.4;margin-bottom:16px}.principles-heading p{font-size:13px;max-width:65ch;margin-bottom:35px}.principles dt{font-size:16px}.principles dd{font-size:13px}.closing{display:block;padding:28px 24px}.closing h2{font-size:24px}.closing p{font-size:12px;margin:8px 0 20px}.site-footer{display:block;font-size:11px;padding:25px 0}.site-footer span{display:block;margin-bottom:7px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
@media print{body{background:white;color:#273938}.site-header nav,.intro-action,.quiet-button,.next-button,.skip-link{display:none}.wrap{width:100%}.demo{border-color:#cddbd5;background:white}.steps{display:none}.demo-body{display:block}.scene-frame{min-height:0}.intro,.principles{padding:24px 0}.principles{gap:30px}.intro-aside p,.principles dd,.principles-heading p,.demo-footer p,.site-footer{color:#526865}.demo-footer{padding:10px}.closing{background:#e2ede8;color:#273938}.closing p{color:#526865}.scene-heading .state{color:#273938;background:#e2ede8}.message{background:#e2ede8;color:#273938}}

@media print{:root{color-scheme:light;--bg:#ffffff;--paper:#ffffff;--ink:#273938;--muted:#526865;--line:#cddbd5;--action:#18584c;--action-ink:#ffffff;--amber:#72501c}.demo-bar p{color:var(--muted)}#scene *{color:var(--ink)!important;background:transparent!important;border-color:var(--line)!important}.evidence-button{display:none}}