/* AI Quant Base · Editorial research design */
:root{--bg:#121210;--panel:#1f1e1b;--panel-2:#292723;--text:#f3f1ed;--muted:#bab3a1;--line:#cdc5b326;--cyan:#c8c0ad;--blue:#c4bba7;--ink:#2d2b26;--paper:#f4f3ef;--radius:26px;--font:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 var(--font);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}button,a,input,textarea{touch-action:manipulation}img,svg{max-width:100%;height:auto}p{margin:0 0 1.2em}h1,h2,h3{margin:0;font-weight:600;line-height:1.25;letter-spacing:-.035em}h1{font-size:54px}h2{font-size:38px}h3{font-size:21px}ul,ol{padding-left:1.35em}li{margin:.5em 0}::selection{background:#c1b39155}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:2px solid #b1a17b;outline-offset:5px}[hidden]{display:none!important}.wrap{width:min(1240px,100%);margin:auto;padding:0 40px}.skip{position:absolute;left:20px;top:-100px;background:var(--panel);padding:10px 18px;border-radius:12px;z-index:100}.skip:focus{top:10px}.masthead{position:sticky;top:0;z-index:40;background:#121210e8;backdrop-filter:blur(22px);border-bottom:1px solid #dcd7cb10}.header-inner{height:84px;display:flex;align-items:center;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:21px;font-weight:650;letter-spacing:-.7px;white-space:nowrap}.brand svg{width:32px;height:32px}.brand span span{font-weight:400;color:#d2cbbb}.nav{margin-left:auto;display:flex;gap:3px;align-items:center}.nav a{font-size:12px;color:#cdc5b4;padding:8px 11px;border-radius:50px;white-space:nowrap;transition:background .2s,color .2s}.nav a:hover,.nav a[aria-current]{background:#e2ddd30d;color:#fff}.nav a[aria-current]{box-shadow:inset 0 0 0 1px #d8d2c426}.header-actions{display:flex;align-items:center;gap:12px}.language{font-size:12px;color:#edeae4;border-left:1px solid var(--line);padding-left:15px}.icon-btn{border:0;background:transparent;width:35px;height:35px;border-radius:50%;display:grid;place-items:center;color:inherit}.icon-btn:hover{background:#e5e2d912}.icon-btn svg{width:18px}.menu-toggle{display:none}.actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:26px;padding:13px 24px;min-height:49px;border:1px solid transparent;border-radius:50px;background:var(--cyan);color:#262420;font-size:13px;font-weight:650;transition:transform .2s,background .2s;box-shadow:0 5px 22px #c6b8990c}.btn:hover{background:#dcd7cb;transform:translateY(-2px)}.btn.secondary{background:transparent;border-color:#e8e4dc38;color:#efede8}.btn.secondary:hover{background:#edeae30b}.link-arrow{font-size:20px;line-height:1;display:inline-block;flex-shrink:0}.arrow{font-size:20px}.text-link{display:inline-flex;align-items:center;gap:17px;font-size:13px;color:var(--cyan);font-weight:550}.text-link:hover{color:#e7e3da}.section-kicker,.micro-label{display:block;font-size:10px;font-weight:550;letter-spacing:.14em;color:#c1b59a;text-transform:uppercase}.section-kicker{margin-bottom:18px}.section{padding:90px 0}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:35px}.section-head h2{line-height:1.35}.section-head>p{max-width:320px;color:var(--muted);font-size:14px;margin-bottom:4px}.section-head>.text-link{white-space:nowrap;margin-bottom:7px}
/* A centered hero and a genuine navigation component, not a trading interface. */
.home-hero{position:relative;isolation:isolate;overflow:hidden;padding:70px 0 0;background:radial-gradient(ellipse at 50% 15%,#53482d2b,transparent 60%)}.hero-aura{position:absolute;inset:-40px 0 auto;height:700px;overflow:hidden;z-index:-1;pointer-events:none}.hero-aura:before,.hero-aura:after{content:"";position:absolute;width:1100px;height:680px;left:50%;top:160px;border:1px solid #c4b79719;border-radius:50%;transform:translateX(-50%) rotate(-20deg);box-shadow:0 0 100px #b3a07305}.hero-aura:after{width:1400px;height:800px;top:120px;transform:translateX(-50%) rotate(18deg);border-color:#bdac8410}.hero-heading{text-align:center;margin:0 auto 48px;max-width:980px}.hero-pill{display:inline-flex;align-items:center;gap:10px;border:1px solid #c4b6962c;background:#d4cebf06;border-radius:50px;padding:7px 15px;font-size:10px;letter-spacing:.16em;color:#d4cebf;margin-bottom:26px}.hero-pill>span{width:5px;height:5px;border-radius:50%;background:var(--cyan);box-shadow:0 0 15px #c8c0ad}.hero-heading h1{font-size:clamp(42px,4.7vw,66px);line-height:1.13;font-weight:550;letter-spacing:-.055em}.hero-heading h1 em{font-style:normal;background:linear-gradient(100deg,#e9e6df,#c6b99a 50%,#dcd7ca);background-clip:text;-webkit-background-clip:text;color:transparent}.hero-heading>p{font-size:16px;line-height:1.85;color:#c9c1ae;margin:24px auto 27px;max-width:740px}.hero-heading .actions{justify-content:center}.hero-assurance{display:flex;justify-content:center;gap:23px;margin-top:22px;font-size:10px;color:#b5ad99}.hero-assurance span:before{content:'✓';color:#a69b82;margin-right:6px}body[lang=zh-Hant] .hero-heading h1{font-size:clamp(37px,4.1vw,57px);line-height:1.3;letter-spacing:-.03em}.research-explorer{position:relative;border:1px solid #cdc5b33b;border-radius:28px;background:linear-gradient(140deg,#272622,#1e1c19);overflow:hidden;box-shadow:0 25px 70px #0004,0 0 60px #bead8608}.explorer-bar{height:50px;display:flex;align-items:center;justify-content:space-between;padding:0 28px;border-bottom:1px solid var(--line);font-size:10px;letter-spacing:.07em;color:#ada289}.explorer-brand{color:#ddd8cc;display:flex;align-items:center;gap:10px}.explorer-brand i{width:7px;height:7px;border:1px solid #c8c0ad;border-radius:50%}.explorer-bar>span:last-child{display:flex;gap:14px}.research-tabs{display:flex;border-bottom:1px solid var(--line);padding:0 22px}.research-tabs button{display:flex;align-items:center;gap:13px;flex:1;justify-content:flex-start;color:#bcb5a5;background:none;border:0;border-bottom:2px solid transparent;padding:19px 17px;font-size:14px;transition:color .2s,background .2s}.research-tabs button>span:last-child{margin-left:auto;font-size:15px;opacity:.5}.research-tabs button[aria-selected=true]{color:#edeae3;border-bottom-color:var(--cyan);background:linear-gradient(0deg,#c9c0ad0b,transparent)}.tab-number{font:10px ui-monospace,monospace;color:#a39678;letter-spacing:0}.research-panel{display:grid;grid-template-columns:1fr 1.1fr;min-height:290px;outline-offset:-4px!important}.panel-copy{padding:38px 38px 35px}.panel-copy .micro-label{font-size:9px;margin-bottom:15px}.panel-copy h2{font-size:28px;line-height:1.4;max-width:400px}.panel-copy p{font-size:14px;color:#bbb4a3;line-height:1.8;margin:14px 0 20px;max-width:390px}.path-visual{position:relative;isolation:isolate;overflow:hidden;border-left:1px solid var(--line);padding:26px 32px 22px;display:flex;flex-direction:column;justify-content:center;background:radial-gradient(ellipse at 60% 70%,#74643f29,transparent 75%)}.visual-grid{position:absolute;z-index:-1;inset:0;background-image:radial-gradient(#c3baa529 1px,transparent 1px);background-size:16px 16px;mask-image:linear-gradient(130deg,transparent,black)}.path-caption{font-size:14px;line-height:1.6;color:#cdc5b3;margin-bottom:25px;letter-spacing:-.01em}.path-nodes{display:flex;position:relative;gap:14px;justify-content:space-between}.path-nodes:before{content:'';position:absolute;left:20%;right:15%;top:27px;border-top:1px dashed #ad9f7f79;z-index:-1}.path-node{flex:1;text-align:center}.node-symbol{display:grid;place-items:center;width:57px;height:57px;border-radius:17px;margin:0 auto 15px;background:linear-gradient(145deg,#44413a,#302d28);color:#cec6b5;border:1px solid #c7bfac4d;box-shadow:0 7px 18px #0003;font-size:26px}.path-node:nth-child(2) .node-symbol{background:linear-gradient(135deg,#cdc5b3,#b0a07b);color:#35332d;border-color:#dbd6ca}.path-node small{display:block;font:8px ui-monospace,monospace;letter-spacing:.12em;color:#a99a78;margin-bottom:6px}.path-node strong{font-size:11px;font-weight:500;color:#ddd7cb}.diagram-label{font-size:9px;color:#ada38a;margin-top:26px;align-self:flex-end}.domain-strip{display:flex;align-items:center;justify-content:space-between;gap:25px;min-height:96px;border-bottom:1px solid var(--line);font-size:12px;color:#c9c0ad}.domain-strip>span{font-size:9px;letter-spacing:.1em;color:#94886d}.domain-strip a:hover{color:var(--cyan)}
/* Applications use an editorial list instead of a repeating grid. */
.application-layout{display:grid;grid-template-columns:.9fr 1.2fr;gap:90px}.section-intro h2{font-size:37px;line-height:1.4}.section-intro>p{font-size:15px;color:var(--muted);max-width:310px;margin:22px 0}.intro-emblem{position:relative;width:155px;height:155px;margin:35px 0 0 10px;display:grid;place-items:center;isolation:isolate}.intro-emblem>span{font-size:70px;font-weight:250;color:#c4bba6;letter-spacing:-.08em}.intro-emblem i{position:absolute;inset:10px;border:1px solid #b4a68430;border-radius:50%;transform:rotate(-28deg) scaleX(1.3);z-index:-1}.intro-emblem i:last-child{transform:rotate(28deg) scaleX(.7);border-color:#bcac8742}.application-rows{border-top:1px solid var(--line)}.application-row{display:flex;align-items:center;gap:23px;padding:28px 2px;border-bottom:1px solid var(--line);transition:padding .2s,color .2s}.application-row:hover{padding-left:10px;color:var(--cyan)}.row-number{align-self:flex-start;font:11px ui-monospace,monospace;color:#aca289;margin-top:5px}.application-row>div{flex:1}.application-row small{font-size:9px;color:#a69979;letter-spacing:.12em}.application-row h3{font-size:21px;margin:6px 0 10px;line-height:1.4}.application-row p{margin:0;color:#b4ab98;font-size:13px;line-height:1.8;max-width:430px}.application-row>.link-arrow{color:#afa387;width:36px;height:36px;border:1px solid #c6beaa2b;border-radius:50%;display:grid;place-items:center}
/* Light instrument section gives the long page a visible change of pace. */
.tools-showcase{margin:0 22px;border-radius:38px;background:var(--paper);padding:65px 0 55px;color:var(--ink)}.tools-showcase .section-kicker{color:#887f6a}.tools-showcase .section-head>p{color:#7f7866}.tools-showcase .section-head h2{font-size:39px}.tools-stage{display:grid;grid-template-columns:1.55fr 1fr;gap:34px;align-items:start}.calculator-demo{background:white;border:1px solid #dcd8cf;border-radius:25px;overflow:hidden;box-shadow:0 18px 30px #5047320a}.demo-heading{display:flex;gap:14px;align-items:center;padding:24px 26px;border-bottom:1px solid #eceae6}.demo-heading h3{font-size:21px}.demo-heading .micro-label{font-size:8px;color:#9d947e;margin-bottom:3px}.demo-icon{display:grid;place-items:center;width:42px;height:42px;background:#f5f3ef;border-radius:13px;color:#72623d;font-size:28px}.local-badge{margin-left:auto;font-size:9px;background:#f5f3ef;color:#74684b;border:1px solid #e8e4dc;padding:4px 8px;border-radius:50px;white-space:nowrap}.demo-body{display:grid;grid-template-columns:1fr .85fr}.demo-body .demo-form{padding:25px;border:0;border-radius:0;background:white;box-shadow:none}.demo-form .field label{font-size:12px;color:#564e3b;margin-bottom:9px}.demo-form .field textarea{color:#434039;background:#faf9f8;border:1px solid #e7e4dc;min-height:74px;font-size:14px;resize:vertical;border-radius:12px;padding:12px}.demo-form .field small{font-size:10px;color:#958d7c;line-height:1.6;margin-top:8px}.demo-form .actions{margin-top:20px;gap:13px}.demo-form .btn{background:#2f2d28;color:#f5f3f0;min-height:39px;font-size:11px;padding:9px 16px;gap:12px}.reset-link{border:0;background:none;font-size:11px;color:#7f7764;padding:7px}.reset-link:hover{text-decoration:underline}.demo-result{padding:26px 20px;background:#f7f6f4;border-left:1px solid #ebe9e5}.demo-result .result-label{font-size:9px;color:#928a78;letter-spacing:.09em}.demo-result .result-value{font-size:49px;color:#5e5133;line-height:1.2;margin:13px 0 14px;letter-spacing:-.05em}.demo-result .result-sub{font-size:10px;line-height:1.6;color:#857d6a;margin:4px 0}.demo-result .result-chart{width:100%;height:65px;margin:0 0 6px}.demo-result .result-chart path:first-child{stroke:#8f856d2b}.demo-result .result-chart path:last-child{stroke:#847247;stroke-width:2.5}.demo-result .error{color:#a33d3d}.demo-foot{padding:14px 24px;border-top:1px solid #ebe9e5;font-size:9px;color:#948e7f;display:flex;justify-content:space-between;gap:20px;align-items:center}.demo-foot a{white-space:nowrap;color:#6a5d40}.tool-menu{display:flex;flex-direction:column}.tool-menu>a{display:flex;align-items:center;gap:15px;padding:19px 0;border-bottom:1px solid #d8d4ca}.tool-menu>a:first-child{padding-top:8px}.tool-menu>a>div{flex:1}.tool-menu h3{font-size:19px;letter-spacing:-.02em}.tool-menu p{font-size:12px;color:#87806e;margin:5px 0 0;line-height:1.7}.tool-index{font:10px ui-monospace,monospace;color:#a9a292;align-self:flex-start;margin-top:5px}.tool-menu .link-arrow{color:#897f69}.tool-menu>a:hover h3{color:#695b39}.tools-all{color:#685b3b!important;margin-top:28px}
.editorial-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:50px}.featured-guide{border-radius:28px;overflow:hidden;position:relative;padding:30px 35px;background:linear-gradient(135deg,#3b3933,#2d2b27 50%,#2e2c28);border:1px solid #c5bda936;display:block}.featured-guide>.micro-label{color:#b8ae97;font-size:9px}.feature-art{height:180px;position:relative;display:grid;place-items:center;isolation:isolate;overflow:hidden}.feature-art>span{font:80px/1 Georgia,serif;font-style:italic;color:#cbc3b1;transform:translateY(-8px)}.feature-art>small{position:absolute;bottom:15px;font-size:7px;letter-spacing:.23em;color:#a69775}.art-ring{width:210px;height:105px;border:1px solid #c3b4935c;border-radius:50%;position:absolute;top:25px;left:50%;transform:translateX(-50%) rotate(-28deg);z-index:-1}.ring-b{transform:translateX(-50%) rotate(28deg);width:140px;height:140px;top:8px;border-color:#ccc4b22b}.ring-c{transform:translateX(-50%) rotate(40deg);width:250px;height:75px;top:40px;border-color:#ccc4b22b}.featured-guide h3{font-size:32px;line-height:1.3;letter-spacing:-.03em;color:#f1efeb}.featured-guide p{font-size:13px;color:#b9b09a;margin:15px 0 22px}.featured-cta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#dfdacf;border-top:1px solid #cac2b024;padding-top:19px}.featured-guide:hover{border-color:#cec6b583}.reading-list{display:flex;flex-direction:column;justify-content:space-between;border-top:1px solid var(--line)}.reading-row{display:flex;align-items:center;gap:25px;justify-content:space-between;padding:29px 0;border-bottom:1px solid var(--line)}.reading-row .micro-label{font-size:9px;color:#a59776;margin-bottom:13px}.reading-row h3{font-size:23px;line-height:1.4;max-width:380px}.reading-row:hover h3{color:var(--cyan)}.reading-row .link-arrow{color:#aa9d80}.trust-line{display:flex;align-items:center;gap:32px;padding-top:35px;font-size:11px;color:#a59b84}.trust-line>span{margin-right:auto;color:#d1caba}.trust-line a:hover{color:var(--cyan)}.contact-band{margin-bottom:75px;border-radius:28px;padding:35px 40px;display:flex;align-items:center;justify-content:space-between;gap:30px;background:linear-gradient(100deg,#282622,#272521);border:1px solid #c9c1af2b}.contact-band h2{font-size:29px;line-height:1.4}.contact-band .section-kicker{font-size:9px;margin-bottom:10px}.contact-band .btn{flex-shrink:0}
/* Shared page layouts */
.page-header{padding:35px 0 50px;background:radial-gradient(ellipse at 80% 30%,#584c2f30,transparent 75%);border-bottom:1px solid var(--line)}.breadcrumb{display:flex;gap:10px;list-style:none;padding:0;margin:0 0 35px;color:#978e78;font-size:11px;flex-wrap:wrap}.breadcrumb li{margin:0}.breadcrumb li+li:before{content:'/';margin-right:10px;color:#635a45}.breadcrumb a:hover{color:#ded9ce}.eyebrow{display:flex;align-items:center;gap:10px;font-size:10px;letter-spacing:.14em;color:#c2b698;margin:0 0 18px}.eyebrow:before{content:'';width:5px;height:5px;background:#c9c1af;border-radius:50%}.page-header h1{font-size:clamp(32px,4vw,51px);line-height:1.25;max-width:970px}.page-header .lead{color:#c3baa6;font-size:17px;max-width:800px;margin:22px 0 0;line-height:1.85}.meta{display:flex;gap:24px;flex-wrap:wrap;font-size:10px;color:#9a8f76;margin-top:25px}.meta a{color:#c7bfab}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card{position:relative;display:flex;flex-direction:column;padding:27px;border-radius:24px;background:linear-gradient(130deg,#262521,#1e1c19);border:1px solid var(--line);transition:border-color .2s,transform .2s;overflow:hidden}.card:hover{border-color:#c3baa45c;transform:translateY(-3px)}.tag{font-size:9px;color:#aa9c7c;letter-spacing:.1em;margin-bottom:16px}.card h3{font-size:22px;line-height:1.4}.card h3 a:after{content:'';position:absolute;inset:0}.card p{font-size:13px;line-height:1.85;color:#b8af9b;margin:16px 0 22px}.card-bottom{display:flex;align-items:center;justify-content:space-between;border-top:1px solid #c6bda91a;padding-top:17px;margin-top:auto;color:#bfb59d;font-size:11px}.card-icon{font-size:25px;color:var(--cyan);margin-bottom:16px}.hub-intro{font-size:14px;color:#b4ab97;max-width:780px;margin:0 0 30px}.page-collection .section{padding:45px 0 80px}.directory-list{counter-reset:directory;display:flex;flex-direction:column;gap:14px}.directory-list>.card{display:grid;grid-template-columns:55px 1fr 1.1fr 90px;gap:24px;align-items:center;padding:26px 30px;counter-increment:directory;background:#1f1e1b}.directory-list>.card:before{content:counter(directory,decimal-leading-zero);font:20px ui-monospace,monospace;color:#8a7d5d;grid-column:1;grid-row:1/3}.directory-list .tag{grid-column:2;grid-row:1;margin:0;font-size:8px;align-self:end}.directory-list h3{grid-column:2;grid-row:2;font-size:21px;align-self:start}.directory-list p{grid-column:3;grid-row:1/3;margin:0;font-size:13px}.directory-list .card-bottom{grid-column:4;grid-row:1/3;margin:0;padding:0;border:0;gap:12px}.directory-list>.card:hover{transform:translateX(3px)}
.article-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:40px;align-items:start;padding-top:42px;padding-bottom:65px}.article-layout>.prose{grid-column:2;grid-row:1;background:var(--paper);color:#534b39;padding:40px 44px;border-radius:27px;font-size:16px;line-height:1.95;min-width:0}.prose>section{margin-bottom:32px;scroll-margin-top:110px}.prose h2{font-size:26px;color:#312f2a;line-height:1.45;margin:0 0 16px}.prose a{color:#6e5f3b;text-decoration:underline;text-underline-offset:3px}.prose p:last-child{margin-bottom:0}.prose .source-box{background:#eeebe5;border-color:#dbd8ce}.prose .source-box h2{font-size:20px}.prose .notice{background:#eeece8;border-color:#dedad1;color:#88806e}.article-aside{grid-column:1;grid-row:1;position:sticky;top:114px}.aside-inner{padding:7px 0}.aside-title{font-size:10px;color:#c6bda9;letter-spacing:.13em;margin-bottom:19px}.toc{list-style:none;padding:0;margin:0}.toc li{margin:0;border-left:1px solid #c6bda92b}.toc a{display:block;font-size:12px;line-height:1.65;padding:9px 0 9px 16px;color:#aea38b}.toc a:hover{color:#ddd7cb}.aside-box{margin-top:25px;border-top:1px solid var(--line);padding-top:23px;font-size:11px;color:#a99e86;line-height:1.85;overflow-wrap:anywhere}.aside-box a{color:#cbc4b2}.source-box{background:#262521;border:1px solid var(--line);border-radius:18px;padding:25px;margin-top:35px}.source-box h2{font-size:22px;margin-bottom:15px}.source-box li{font-size:12px;line-height:1.8;margin:.6em 0;overflow-wrap:anywhere}.source-box p{font-size:11px;line-height:1.75;color:#9f9681}.notice{border:1px solid #bcb1972e;border-radius:15px;padding:16px 20px;font-size:12px;color:#b0a792}.email-panel{padding:25px;background:#ebe8e2;border:1px solid #dad4c7;border-radius:18px;margin:25px 0}.email-panel>small{font-size:11px;color:#837b6a}.email-panel a{font-size:clamp(16px,2vw,25px);color:#5e5133;overflow-wrap:anywhere}.scroll-progress{position:fixed;left:0;top:0;width:100%;height:2px;transform:scaleX(0);transform-origin:left;background:#c8c0ad;z-index:70;pointer-events:none}
/* Calculators */
.tool-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;margin:40px 0}.tool-form{background:#23211d;border:1px solid var(--line);border-radius:25px;padding:34px}.tool-form h2{font-size:22px;margin-bottom:27px}.fields{display:grid;grid-template-columns:1fr 1fr;gap:23px 20px;margin-bottom:27px}.field.full{grid-column:1/-1}.field label{display:block;font-size:13px;font-weight:550;margin-bottom:9px;color:#ddd8cd}.field input,.field textarea{width:100%;border:1px solid #bdb29a43;border-radius:12px;background:#141311;color:#f6f4f1;padding:12px 14px;font-size:17px;min-height:48px}.field textarea{min-height:138px;resize:vertical}.field small{display:block;font-size:10px;color:#a69c84;line-height:1.65;margin-top:7px}.form-note{font-size:11px;color:#9c9178;line-height:1.75;margin-top:23px;margin-bottom:0}.tool-result{padding:36px;background:linear-gradient(140deg,#ded9cd,#eae7df);border:1px solid #b5ad99;border-radius:25px;color:#36342e;display:flex;flex-direction:column}.result-label{font-size:10px;letter-spacing:.14em}.result-value{font-size:66px;letter-spacing:-.055em;line-height:1.2;font-weight:550;margin:23px 0}.result-sub{font-size:13px;line-height:1.7;margin:7px 0;color:#6c624b}.result-chart{margin:5px 0 18px;width:100%;height:105px}.result-chart path:first-child{stroke:#7f755e44}.result-chart path:last-child{stroke:#73633e}.result-details{font-size:11px;color:#7d745f;border-top:1px solid #7b6b4638;padding-top:18px;margin-top:auto;line-height:1.8}.error{color:#b34d51!important}.tool-method{max-width:870px;margin:55px auto 75px;font-size:15px;color:#c8c0ac;line-height:1.95}.tool-method h2{font-size:26px;color:#efece6;margin:30px 0 17px}.formula-block{font:12px/1.9 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre-wrap;overflow-wrap:anywhere;background:#211f1c;border:1px solid var(--line);border-radius:18px;color:#cec6b5;padding:23px}.no-js{padding:20px;color:#d1ba87}
/* Footer and search */
.footer{padding:52px 0 0;background:#0e0d0b;border-top:1px solid #c3baa417}.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:45px;padding-bottom:40px}.footer-about p{font-size:12px;color:#968d77;line-height:1.9;max-width:280px;margin:19px 0 17px}.footer-about .text-link{font-size:12px;color:#c4bba7}.footer h3{font-size:10px;letter-spacing:.09em;text-transform:uppercase;color:#c3baa6;margin:8px 0 18px;font-weight:500}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin:7px 0}.footer-links a{font-size:12px;color:#978d76}.footer-links a:hover{color:var(--cyan)}.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid #c3baa417;padding:22px 0;font-size:11px;color:#a89f89}.support-credit{margin-left:auto;text-align:right}.support-credit a{color:#c4bba7;white-space:nowrap}.support-credit a:hover{color:var(--cyan)}.search-dialog{width:min(650px,calc(100% - 32px));max-height:80vh;background:#22211d;color:var(--text);border:1px solid #c7ba9b49;border-radius:25px;padding:25px;box-shadow:0 40px 100px #0008}.search-dialog::backdrop{background:#0009;backdrop-filter:blur(8px)}.search-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.search-dialog input{width:100%;padding:13px 16px;background:#141311;color:#f8f7f4;border:1px solid #c9c0ad45;border-radius:12px}.search-results{max-height:50vh;overflow:auto;margin-top:18px}.search-status{font-size:12px;color:#b2a68b}.search-item{display:block;padding:16px 4px;border-bottom:1px solid var(--line)}.search-item b{display:block;font-size:15px;font-weight:550;color:#e8e5dd}.search-item small{display:block;margin-top:6px;font-size:11px;line-height:1.7;color:#aca186}.search-item:hover b{color:var(--cyan)}
/* Responsive composition, not a scaled desktop layout. */
@media(min-width:1500px){.hero-heading h1{font-size:70px}.home-hero{padding-top:80px}}
@media(max-width:1100px){.wrap{padding-left:28px;padding-right:28px}.header-inner{gap:15px;height:75px}.brand{font-size:19px}.nav{gap:0}.nav a{font-size:11px;padding:8px}.header-actions{gap:7px}.application-layout{gap:45px}.section-intro h2{font-size:32px}.tools-stage{grid-template-columns:1.5fr 1fr;gap:25px}.demo-body{grid-template-columns:1fr}.demo-result{border-left:0;border-top:1px solid #ebe8e0;display:grid;grid-template-columns:1fr 1fr;column-gap:20px}.demo-result .result-value{grid-column:1;grid-row:2;margin:8px 0 0}.demo-result>div:last-child{grid-column:2;grid-row:1/3}.demo-result .result-chart{height:45px}.demo-result .result-sub:last-child{display:none}.demo-foot{flex-wrap:wrap;gap:6px}.directory-list>.card{grid-template-columns:35px 1.1fr 1fr;gap:17px}.directory-list .card-bottom{display:none}.footer-grid{gap:27px}.editorial-grid{gap:35px}.article-layout{grid-template-columns:190px minmax(0,1fr);gap:28px}.article-layout>.prose{padding:32px}.research-panel{grid-template-columns:1fr 1fr}.panel-copy{padding:30px}.panel-copy h2{font-size:25px}.path-visual{padding:25px}.path-caption{font-size:13px}.section-head h2{font-size:33px}}
@media(max-width:960px){.nav{display:none;position:absolute;top:75px;left:20px;right:20px;padding:16px;background:#22211df5;border:1px solid #c7bfab33;border-radius:22px;gap:8px;flex-wrap:wrap;box-shadow:0 25px 30px #0003}.nav.open{display:flex}.nav a{font-size:13px;padding:10px 15px}.menu-toggle{display:grid}.header-actions{margin-left:auto}.hero-heading h1{font-size:49px}.hero-heading>p{font-size:15px}.application-layout{grid-template-columns:.8fr 1.2fr;gap:30px}.section-intro h2{font-size:28px}.application-row{gap:16px}.application-row h3{font-size:19px}.tools-showcase{margin:0 14px}.tools-showcase .wrap{padding:0 25px}.tool-menu h3{font-size:17px}.tool-menu p{font-size:11px}.feature-art{height:170px}.reading-row h3{font-size:20px}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}.footer-grid>div:last-child{grid-column:2/4}.contact-band{width:calc(100% - 56px)}.contact-band h2{font-size:24px}}
@media(max-width:700px){html{scroll-padding-top:90px}.wrap{padding-left:22px;padding-right:22px}.header-inner{height:70px}.brand{font-size:18px;gap:8px}.brand svg{width:29px;height:29px}.header-actions{gap:5px}.language{padding-left:10px;font-size:11px}.nav{top:70px;left:12px;right:12px}.home-hero{padding:43px 0 0}.hero-pill{font-size:8px;padding:6px 12px;margin-bottom:23px}.hero-heading{margin-bottom:30px}.hero-heading h1{font-size:clamp(32px,8.4vw,48px);line-height:1.17;letter-spacing:-.045em}body[lang=zh-Hant] .hero-heading h1{font-size:clamp(27px,7.2vw,40px);line-height:1.4;letter-spacing:-.04em}.hero-heading>p{font-size:13px;line-height:1.9;margin:19px auto 23px}.hero-heading>p br{display:none}.hero-heading .actions{gap:10px}.btn{font-size:11px;min-height:44px;padding:11px 18px;gap:14px}.hero-assurance{font-size:8px;gap:12px;margin-top:20px;flex-wrap:wrap}.research-explorer{border-radius:21px}.explorer-bar{padding:0 17px;height:43px;font-size:8px}.explorer-bar>span:last-child{font-size:8px;gap:6px}.research-tabs{padding:0 9px}.research-tabs button{padding:15px 8px;font-size:11px;gap:7px;justify-content:center}.tab-number{font-size:8px}.research-tabs button>span:last-child{display:none}.research-panel{grid-template-columns:1fr}.panel-copy{padding:25px 24px 22px}.panel-copy h2{font-size:24px;max-width:100%}.panel-copy .micro-label{font-size:8px;margin-bottom:12px}.panel-copy p{font-size:12px;line-height:1.85;margin:12px 0 16px}.panel-copy .text-link{font-size:11px}.path-visual{border-left:0;border-top:1px solid var(--line);padding:20px 24px;min-height:183px}.path-caption{display:none}.node-symbol{width:45px;height:45px;font-size:22px;border-radius:13px;margin-bottom:11px}.path-nodes:before{top:22px}.path-node small{font-size:7px}.path-node strong{font-size:10px}.diagram-label{font-size:8px;margin-top:18px}.domain-strip{gap:13px 20px;flex-wrap:wrap;justify-content:center;padding-top:22px;padding-bottom:24px;min-height:auto;font-size:10px}.domain-strip>span{flex-basis:100%;text-align:center;font-size:8px}.section{padding:52px 0}.application-layout{grid-template-columns:1fr;gap:27px}.section-intro h2{font-size:31px;line-height:1.4}.section-intro>p{font-size:13px;max-width:none;margin:16px 0}.section-intro .text-link{font-size:12px}.intro-emblem{display:none}.section-kicker{font-size:9px;margin-bottom:15px}.application-row{padding:22px 0;gap:16px}.application-row small{font-size:8px}.application-row h3{font-size:18px;margin-bottom:8px}.application-row p{font-size:12px}.application-row>.link-arrow{width:30px;height:30px;font-size:17px}.row-number{font-size:9px}.tools-showcase{padding:40px 0;margin:0 10px;border-radius:28px}.tools-showcase .wrap{padding:0 18px}.section-head{display:block;margin-bottom:25px}.section-head h2,.tools-showcase .section-head h2{font-size:30px}.section-head>p{margin-top:15px;font-size:12px}.section-head>.text-link{margin-top:18px;font-size:12px}.tools-stage{grid-template-columns:1fr;gap:27px}.calculator-demo{border-radius:21px}.demo-heading{padding:19px;gap:10px}.demo-heading h3{font-size:19px}.demo-icon{width:35px;height:35px;border-radius:11px;font-size:25px}.local-badge{font-size:8px}.demo-body .demo-form{padding:20px}.demo-result{padding:20px}.demo-result .result-value{font-size:43px}.demo-result .result-sub{font-size:9px}.demo-result .result-label{font-size:8px}.demo-foot{font-size:9px;padding:13px 20px}.tool-menu>a{padding:17px 2px}.tool-menu>a:first-child{padding-top:0}.tool-menu h3{font-size:18px}.tool-menu p{font-size:12px}.tools-all{font-size:12px;margin-top:23px}.editorial-grid{grid-template-columns:1fr;gap:27px}.featured-guide{padding:26px;border-radius:24px}.feature-art{height:155px}.featured-guide h3{font-size:30px}.reading-row{padding:23px 0}.reading-row h3{font-size:20px}.reading-row .micro-label{font-size:8px;margin-bottom:10px}.trust-line{flex-wrap:wrap;gap:17px;padding-top:28px;font-size:10px}.trust-line>span{flex-basis:100%}.contact-band{width:calc(100% - 44px);margin-bottom:48px;padding:26px;display:block;border-radius:23px}.contact-band h2{font-size:25px;line-height:1.45}.contact-band .btn{margin-top:22px}.contact-band .section-kicker{font-size:8px}.page-header{padding:26px 0 33px}.breadcrumb{font-size:9px;margin-bottom:24px}.eyebrow{font-size:9px;margin-bottom:15px}.page-header h1{font-size:32px;line-height:1.35}.page-header .lead{font-size:14px;line-height:1.9;margin-top:18px}.meta{font-size:9px;gap:8px 16px;margin-top:20px}.grid,.grid.two{grid-template-columns:1fr;gap:17px}.card{padding:25px}.card h3{font-size:21px}.card p{font-size:13px}.hub-intro{font-size:13px}.page-collection .section{padding:30px 0 48px}.directory-list>.card{display:block;padding:24px 25px 23px 60px}.directory-list>.card:before{position:absolute;left:22px;top:28px;font-size:14px}.directory-list .tag{margin-bottom:12px}.directory-list h3{font-size:20px;line-height:1.4}.directory-list p{font-size:12px;margin-top:13px}.article-layout{display:block;padding-top:25px;padding-bottom:42px}.article-layout>.prose{padding:25px 23px;border-radius:23px;font-size:15px;line-height:1.95}.prose h2{font-size:23px;margin-bottom:14px}.prose>section{margin-bottom:28px}.article-aside{display:none}.source-box{padding:20px}.notice{padding:14px 16px;font-size:11px}.email-panel{padding:18px}.tool-layout{grid-template-columns:1fr;margin:25px 0;gap:18px}.tool-form,.tool-result{padding:25px;border-radius:23px}.fields{gap:20px 14px}.field label{font-size:12px}.field input{font-size:16px;padding:11px 12px}.field small{font-size:9px}.result-value{font-size:58px}.tool-method{font-size:14px;line-height:1.9;margin:37px auto 48px}.tool-method h2{font-size:24px}.formula-block{font-size:10px;padding:18px}.footer{padding-top:35px}.footer-grid{grid-template-columns:1fr 1fr;gap:22px;padding-bottom:30px}.footer-about{grid-column:1/-1}.footer-about p{max-width:330px;margin:15px 0}.footer-grid>div:last-child{grid-column:auto}.footer h3{font-size:9px;margin-bottom:15px}.footer-links a{font-size:11px}.footer-bottom{font-size:10px;gap:14px;padding:20px 0}.support-credit{max-width:55%}.search-dialog{padding:20px;border-radius:21px}.search-top{font-size:14px}}
@media(max-width:370px){.wrap{padding-left:17px;padding-right:17px}.brand{font-size:16px}.brand svg{width:26px}.header-actions{gap:2px}.hero-heading .btn{padding:10px 14px;font-size:10px}.hero-assurance{gap:9px;font-size:7px}.fields{grid-template-columns:1fr}.research-tabs button{font-size:10px;gap:5px}.demo-result .result-value{font-size:37px}.demo-result{column-gap:10px}.local-badge{font-size:7px;padding:4px 6px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.btn:hover,.card:hover{transform:none}}
@media print{.masthead,.footer,.article-aside,.search-dialog,.actions,.scroll-progress,.tool-form,.contact-band{display:none!important}body{background:white;color:#34322c}.wrap{width:100%;padding:0}.page-header{background:none;padding:0 0 20px}.page-header h1{color:#34322c;font-size:28pt}.page-header .lead,.meta,.breadcrumb{color:#706650}.article-layout{display:block}.article-layout>.prose{padding:0;background:white;color:#34322c}.prose{font-size:11pt}.prose h2{color:#34322c}.tool-result{background:#f5f4f1;color:#34322c}.tool-method{color:#34322c}.tool-method h2{color:#34322c}.source-box,.notice{break-inside:avoid}}
/* Product and local research studio */
select{font:inherit;touch-action:manipulation}select:focus-visible{outline:2px solid #b1a17b;outline-offset:4px}.header-studio{border:1px solid #aa9b784f;background:#2c2a25;color:#ddd7cb;border-radius:40px;font-size:11px;padding:8px 15px;white-space:nowrap}.nav .nav-studio{display:none}.header-inner{gap:18px}.nav a{padding-left:9px;padding-right:9px}.header-actions{gap:10px}.home-product-section{padding-top:56px;padding-bottom:5px}.home-products{display:grid;grid-template-columns:1fr 1fr;gap:22px}.home-product{padding:30px 34px;border-radius:26px;border:1px solid #c0b49935;background:radial-gradient(ellipse at 100% 0,#60523333,transparent 75%),#22211d;transition:border-color .2s,transform .2s}.home-product:hover{border-color:#c6b99a8a;transform:translateY(-3px)}.product-index{font:10px/1.7 ui-monospace,monospace;letter-spacing:.05em;color:#b5aa8f}.home-product h3{font-size:26px;margin:20px 0 14px}.home-product p{color:#bbb29c;font-size:13px;max-width:440px;margin-bottom:23px}.home-product .text-link{font-size:12px}.home-product-scope{font-size:10px;color:#aea590;text-align:center;margin-top:20px}.product-header{background:radial-gradient(ellipse at 75% 40%,#6052332b,transparent 65%)}.product-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}.product-card{border:1px solid var(--line);border-radius:30px;padding:38px;background:linear-gradient(140deg,#2a2824,#1d1b18);position:relative;overflow:hidden}.product-symbol{font-size:58px;color:#cbc4b2;margin:25px 0 18px;line-height:1}.product-card h2{font-size:31px}.product-card h3{font-size:18px;color:#ded9ce;margin:17px 0;line-height:1.5}.product-card p{font-size:14px;color:#b7af9c}.product-card .actions{margin-top:25px;gap:20px}.product-card .btn{font-size:12px}.product-card .text-link{font-size:12px}.workflow-band{display:flex;justify-content:space-between;align-items:center;padding:24px 32px;border:1px solid var(--line);border-radius:20px;margin:40px 0;color:#c2b79d;font:12px/1.8 ui-monospace,monospace}.workflow-band i{font-style:normal;color:#95896d}.product-facts{display:grid;grid-template-columns:1fr 1fr;gap:35px 55px;margin:30px 0}.product-facts h2{font-size:25px;margin:0 0 17px;line-height:1.5}.product-facts p{font-size:14px;color:#bbb29f;line-height:1.95}.product-note{border-left:2px solid #b1a17b;border-radius:4px 16px 16px 4px;background:#2a2823;padding:18px 24px;font-size:13px;color:#c2b9a4;margin-top:30px}.product-actions{margin:0 0 48px}.studio-help{padding:32px;border:1px solid var(--line);border-radius:24px;margin:35px 0;background:#22211d}.studio-help h2{font-size:25px;margin-bottom:17px}.studio-help p{font-size:14px;color:#c0b7a4;max-width:900px}.studio-help .btn{font-size:12px}.studio-shell{padding-top:25px;padding-bottom:45px}.studio-toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;margin:0 0 20px}.studio-toolbar .text-link{font-size:12px}.studio-pill{display:inline-flex;align-items:center;border:1px solid #baac8a4d;border-radius:40px;padding:5px 12px;font:9px/1.8 ui-monospace,monospace;color:#cac2af;letter-spacing:.03em}.studio-pill:before{content:'';width:5px;height:5px;border-radius:50%;background:#c5b898;margin-right:8px}.studio-workspace{display:grid;grid-template-columns:1.06fr .94fr;align-items:start;gap:24px}.studio-editor{padding:30px;border-radius:26px;border:1px solid var(--line);background:#22211d;min-width:0}.studio-section-title{display:flex;align-items:center;gap:13px;margin-bottom:25px}.studio-section-title>span{font:11px ui-monospace,monospace;border:1px solid #bcb4a14d;border-radius:10px;padding:8px;color:#baaf94}.studio-section-title h2{font-size:24px}.studio-editor .field{margin:0 0 22px;min-width:0}.studio-editor .field label{font-size:12px}.studio-editor .field label>span{font:9px ui-monospace,monospace;color:#988d75;margin-right:10px}.studio-editor .field 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/* Graphite and champagne — restrained financial technology palette. */
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