*{box-sizing:border-box}
:root{--layout-max:1560px;--gutter:24px;--ground:#f3f4f6;--paper:#fff;--panel:#fbfbfc;--panel-muted:#f7f8f9;--ink:#13161a;--text:#30363e;--muted:#6e7783;--quiet:#939aa4;--line:#e0e3e7;--line-strong:#cfd4da;--accent:#557da8;--accent-fill:#e8eef4;--risk:#c94742;--gain:#14715c;--warm:#996421;--on-solid:#fff}
html[data-theme=dark]{--ground:#0f1216;--paper:#15191e;--panel:#181d23;--panel-muted:#1b2027;--ink:#f0f2f5;--text:#c9d0d8;--muted:#8f99a5;--quiet:#7e8894;--line:#282f38;--line-strong:#39424d;--accent:#8eacd2;--accent-fill:#1d2a3a;--risk:#e06a64;--gain:#48b89d;--warm:#b99565;--on-solid:#0f1216}
html{min-width:0;background:var(--ground)}
body{min-width:0;min-height:100vh;margin:0;padding:0 0 28px;background:var(--ground);color:var(--text);font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Noto Sans SC",sans-serif;-webkit-font-smoothing:antialiased}
button,input{font:inherit}button{cursor:pointer}a{color:inherit}::selection{background:var(--accent-fill);color:var(--ink)}
button:focus-visible,input:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--ink);outline-offset:2px}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.layout-inner{width:min(var(--layout-max),calc(100% - 2*var(--gutter)));margin-inline:auto}
.site-nav{height:58px;border-bottom:1px solid var(--line-strong);background:var(--paper)}.nav-inner{height:100%;display:flex;align-items:center}.wordmark{display:flex;align-items:center;text-decoration:none;white-space:nowrap}.brand-lockup{display:block;width:130px;height:auto;margin-left:-10px;flex:none}.brand-lockup-dark{display:none}html[data-theme=dark] .brand-lockup-light{display:none}html[data-theme=dark] .brand-lockup-dark{display:block}.wordmark:after{content:"";width:1px;height:18px;margin-left:5px;background:var(--line-strong)}
.nav-links{height:100%;min-width:0;margin-left:22px;display:flex;align-items:center;gap:26px;overflow-x:auto;scrollbar-width:none}.nav-links::-webkit-scrollbar{display:none}.nav-links a{position:relative;height:100%;flex:0 0 auto;display:flex;align-items:center;color:var(--muted);font-size:12px;text-decoration:none}.nav-links a:hover,.nav-links a.active{color:var(--ink)}.nav-links a.active{font-weight:650}.nav-links a.active:after{content:"";position:absolute;right:0;bottom:-1px;left:0;height:2px;background:var(--ink)}
.theme-toggle{height:30px;margin-left:auto;padding:0 9px;display:flex;align-items:center;gap:6px;border:1px solid var(--line-strong);border-radius:0;background:transparent;color:var(--muted);font-size:10px}.theme-toggle:hover{border-color:var(--ink);color:var(--ink)}.theme-mark{width:10px;height:10px;border:1px solid currentColor;border-radius:50%}html[data-theme=dark] .theme-mark{background:currentColor}
.page-head{min-height:82px;padding:20px 0 17px;display:flex;align-items:flex-end;gap:24px}.page-head>div{min-width:0;display:flex;align-items:baseline;gap:12px}.page-head h1{margin:0;color:var(--ink);font-size:28px;line-height:1.15;font-weight:710;letter-spacing:-.04em;white-space:nowrap}.page-head p{margin:0;color:var(--muted);font-size:11px;white-space:nowrap}.state-dot{display:none}
.workspace{display:grid;grid-template-columns:300px minmax(0,1fr);align-items:start;border-top:1px solid var(--ink);border-bottom:1px solid var(--line-strong);background:var(--paper)}
.parameter-panel{min-width:0;padding:18px;display:flex;flex-direction:column;gap:18px;border-right:1px solid var(--line-strong);background:var(--panel)}.panel-heading{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--line)}.panel-heading h2{margin:0;color:var(--ink);font-size:14px}.close-params{display:none}
.param-section{margin:0;padding:0 0 17px;border:0;border-bottom:1px solid var(--line)}.param-section h3,.param-section summary{margin:0 0 14px;color:var(--ink);font-size:11px;font-weight:680}.param-section summary{cursor:pointer;list-style:none}.param-section summary:after{content:"展开";float:right;color:var(--quiet);font-size:9px;font-weight:500}.param-section[open] summary:after{content:"收起"}.param-section summary::-webkit-details-marker{display:none}
.range-field{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:5px 10px;margin-top:13px;color:var(--muted);font-size:10.5px}.range-field:first-of-type{margin-top:0}.range-field output{color:var(--ink);font-variant-numeric:tabular-nums}.range-field input{grid-column:1/-1;width:100%;height:16px;margin:0;accent-color:var(--ink)}
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.result-column{min-width:0}
.decision-summary{display:grid;grid-template-columns:.85fr 1.05fr .9fr;border-bottom:1px solid var(--line-strong)}.decision-summary article{min-width:0;min-height:126px;padding:14px 18px;border-right:1px solid var(--line);background:var(--paper)}.decision-summary article:last-child{border-right:0}.eyebrow{display:block;margin-bottom:10px;color:var(--quiet);font-size:9px}.summary-heading{height:34px;display:flex;align-items:center;justify-content:space-between;gap:16px}.summary-heading .eyebrow{margin:0;color:var(--text);font-weight:650}.summary-heading strong{color:var(--ink);font-size:20px;line-height:1;font-weight:700;letter-spacing:-.025em;white-space:nowrap}.expectancy-conclusion .summary-heading strong{font-size:24px}.decision-summary dl{margin:8px 0 0}.decision-summary dl div{display:flex;justify-content:space-between;margin-top:3px}.decision-summary dt{color:var(--muted);font-size:9.5px}.decision-summary dd{margin:0;color:var(--ink);font-size:10.5px;font-variant-numeric:tabular-nums}.risk-conclusion .summary-heading strong{font-size:26px}.full-risk{display:flex;align-items:center;gap:7px}.full-risk small{color:var(--muted);font-size:9px;font-weight:600}.handoff-heading a{color:var(--ink);font-size:10px;text-underline-offset:3px;white-space:nowrap}.handoff-actions{margin-top:8px}.handoff-actions button{flex:1}.handoff-actions button:disabled{opacity:.45;cursor:not-allowed}.handoff p{margin:7px 0 0;color:var(--muted);font-size:9.5px}
.section-head{min-height:68px;padding:14px 18px;display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line);background:var(--panel)}.section-head h2{margin:0;color:var(--ink);font-size:13px}.section-head p{margin:4px 0 0;color:var(--muted);font-size:9.5px}.ladder-section{border-bottom:1px solid var(--line-strong)}.risk-ladder{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(150px,1fr);overflow-x:auto;background:var(--paper)}.risk-item{position:relative;min-height:126px;padding:13px 14px;border:0;border-right:1px solid var(--line);background:var(--panel);color:var(--text);text-align:left}.risk-item:last-child{border-right:0}.risk-item:after{content:"";position:absolute;right:0;bottom:0;left:0;height:2px;background:var(--strategy-color)}.risk-item:hover{background:var(--panel-muted)}.risk-item.active{background:var(--accent-fill)}.risk-item strong{display:block;color:var(--ink);font-size:11px}.risk-primary{display:flex;align-items:flex-end;justify-content:space-between;gap:10px;margin-top:8px;padding-bottom:2px}.risk-primary span{color:var(--muted);font-size:9px}.risk-primary b{color:var(--ink);font-size:18px;line-height:1;font-weight:700;letter-spacing:-.025em;font-variant-numeric:tabular-nums}.risk-item dl{margin:8px 0 0}.risk-item dl div{display:flex;justify-content:space-between;margin-top:4px}.risk-item dt{color:var(--muted);font-size:8.5px}.risk-item dd{margin:0;color:var(--ink);font-size:9px;font-variant-numeric:tabular-nums}.text-button{margin:8px 18px;border:0;background:transparent;color:var(--accent);font-size:10px;text-decoration:underline;text-underline-offset:3px}
.charts-section{border-bottom:1px solid var(--line-strong)}.toolbar{flex-wrap:wrap}.toolbar button{background:var(--paper)}.chart-grid{display:grid;grid-template-columns:1fr 1fr}.chart-grid article{min-width:0;border-right:1px solid var(--line-strong);background:var(--paper)}.chart-grid article:last-child{border-right:0}.chart-grid h3{margin:0;padding:10px 18px;border-bottom:1px solid var(--line);color:var(--ink);font-size:10px}.chart{position:relative;width:100%;height:500px}.chart-tooltip{position:absolute;z-index:8;min-width:110px;padding:6px 8px;border:1px solid var(--line-strong);background:var(--paper);color:var(--text);pointer-events:none;font-size:9px;line-height:1.4}.chart-tooltip[hidden]{display:none}.chart-tooltip strong,.chart-tooltip span{display:block}.chart-tooltip strong{margin-bottom:2px;color:var(--ink);font-size:10px}.chart-tooltip span{color:var(--muted);white-space:nowrap}.range-result{padding:10px 18px;border-top:1px solid var(--line);color:var(--text);font-size:10px;background:var(--panel)}
.advanced-details{border-bottom:1px solid var(--line-strong);background:var(--paper)}.advanced-details summary{padding:13px 18px;color:var(--ink);font-size:10.5px;cursor:pointer}.detail-content{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}.detail-content article{padding:13px 18px;border-right:1px solid var(--line)}.detail-content article:last-child{border-right:0}.detail-content span{display:block;color:var(--muted);font-size:9px}.detail-content strong{display:block;margin-top:5px;color:var(--ink);font-size:17px}.detail-content p{grid-column:1/-1;margin:0;padding:14px 18px;color:var(--muted);font-size:10px}.error-panel{padding:14px 18px;border-top:1px solid var(--risk);color:var(--risk);font-size:10px;background:var(--paper)}
.mobile-params,.drawer-overlay{display:none}.mobile-params span{padding-left:8px;border-left:1px solid currentColor;opacity:.7;font-size:9px}.footer{padding-top:16px;color:var(--quiet);font-size:9.5px}.footer a{color:var(--muted)}
@media(max-width:1287px){:root{--gutter:16px}}
@media(max-width:1180px){.workspace{grid-template-columns:270px minmax(0,1fr)}.decision-summary{grid-template-columns:1fr 1fr}.decision-summary .handoff{grid-column:1/-1;min-height:105px;border-top:1px solid var(--line)}.chart-grid{grid-template-columns:1fr}.chart-grid article{border-right:0;border-bottom:1px solid var(--line-strong)}.chart{height:450px}}
@media(max-width:992px){body{padding-bottom:20px}.page-head{align-items:flex-start}.workspace{display:block}.mobile-params{position:sticky;top:8px;z-index:30;width:max-content;min-height:36px;margin:0 16px 8px auto;padding:8px 13px;display:flex;align-items:center;gap:8px;border:1px solid var(--ink);border-radius:0;background:var(--ink);color:var(--paper);font-size:11px}.drawer-overlay{position:fixed;inset:0;z-index:49;background:rgba(15,18,22,.68);opacity:0;visibility:hidden;transition:opacity .2s}.drawer-overlay.active{display:block;opacity:1;visibility:visible}.parameter-panel{position:fixed;right:0;bottom:0;left:0;z-index:50;width:100%;max-height:88vh;overflow-y:auto;border:1px solid var(--line-strong);border-bottom:0;background:var(--paper);transform:translateY(105%);transition:transform .25s}.parameter-panel.active{transform:translateY(0)}.close-params{display:block;width:28px;height:28px;border:1px solid var(--line-strong);border-radius:0;background:transparent;color:var(--ink)}.decision-summary{grid-template-columns:1fr 1fr}.risk-ladder{grid-auto-columns:minmax(145px,47vw)}}
@media(max-width:640px){:root{--gutter:14px}.site-nav{height:auto;min-height:56px}.nav-inner{min-height:56px;padding-top:10px;align-items:flex-start;flex-direction:column;gap:5px;position:relative}.wordmark:after{display:none}.nav-links{width:100%;height:36px;margin-left:0;gap:20px}.nav-links a{height:36px}.theme-toggle{position:absolute;top:10px;right:0}.page-head{min-height:0;padding:16px 0 13px}.page-head h1{font-size:23px}.page-head p{font-size:9px}.decision-summary{grid-template-columns:1fr}.decision-summary article{min-height:0;border-right:0;border-bottom:1px solid var(--line);padding:14px}.risk-conclusion .summary-heading strong{font-size:25px}.section-head{align-items:flex-start;flex-direction:column;gap:10px;padding:13px 14px}.basis-switch,.toolbar{width:100%;overflow-x:auto}.basis-switch button,.toolbar button{flex:1;white-space:nowrap}.risk-ladder{grid-auto-columns:minmax(150px,76vw)}.chart-controls{align-items:stretch}.chart{height:360px}.detail-content{grid-template-columns:1fr}.detail-content article{border-right:0;border-bottom:1px solid var(--line)}.detail-content article:last-child{border-bottom:0}.footer{padding-top:13px}.handoff-actions button{min-height:34px}}
/* Semantic readability uplift: preserve titles and critical metrics while raising reading/action text. */
.theme-toggle,.nav-links a{font-size:12px}
.param-section h3,.param-section summary{font-size:13px}.param-section summary:after,.simulation-depth{font-size:10.5px}
.range-field,.basis-switch button,.toolbar button,.handoff-actions button,.simulation-state strong,.simulation-state button,.primary-button,.secondary-button{font-size:12px}
.eyebrow,.decision-summary dt,.decision-summary dd,.full-risk small{font-size:12px}
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.risk-item dd{font-size:12px}.chart-grid h3{font-size:13px}.chart-tooltip,.chart-tooltip strong{font-size:12px}.chart-tooltip{line-height:1.45}
.mobile-params{font-size:12px}.mobile-params span,.footer{font-size:10.5px}
@media(max-width:640px){.page-head p{font-size:9px}}
@media(max-width:360px){.page-head>div{gap:8px}.page-head p{font-size:9px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}