@import"https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap";:root{--paper:#F6F2EA;--paper-deep:#EDE6DA;--ink:#22211F;--muted:#716D65;--line:#D8D0C3;--coral:#E85D4A;--coral-deep:#B63D2F;--green:#3C725F;--shadow:0 18px 42px rgba(42,33,24,.08);font-family:IBM Plex Sans,sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-size:16px;line-height:1.55;background-image:radial-gradient(rgba(64,50,35,.045) .6px,transparent .6px);background-size:7px 7px}button,input,select{font:inherit}a{color:inherit;text-decoration:none}.container{width:min(1180px,calc(100% - 48px));margin:0 auto}.site-header{border-top:3px solid var(--coral);border-bottom:1px solid var(--line);background:#f6f2eaeb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:sticky;top:0;z-index:20}.header-inner{height:78px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:11px;font-family:"DM Serif Display",serif;font-size:25px;letter-spacing:-.02em}.brand-mark{width:25px;height:28px;display:inline-block;position:relative}.brand-mark i{display:block;width:19px;height:4px;background:var(--coral);position:absolute;left:0}.brand-mark i:first-child{top:7px}.brand-mark i:nth-child(2){top:16px}.brand-mark b{display:block;width:4px;height:28px;background:var(--ink);position:absolute;right:0;top:0}.nav{display:flex;gap:30px;color:var(--muted);font-size:14px}.nav a:hover{color:var(--coral)}.mobile-menu{display:none;border:0;background:transparent}.mobile-menu svg{width:22px}.eyebrow{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--coral-deep);font-weight:700}.hero{min-height:610px;position:relative;overflow:hidden;background:var(--paper-deep)}.hero-photo{position:absolute;inset:0;background:linear-gradient(90deg,#f6f2eafa,#f6f2eae0 39%,#f6f2ea29 74%),url(/manus-storage/smartcalc-hero-paper_3b23f075.jpg) center/cover;opacity:.72}.hero-grid{position:relative;display:grid;grid-template-columns:1fr 220px;min-height:610px;align-items:center}.hero-copy{max-width:650px;padding:72px 0}.hero h1,.listing-page h1,.static-page h1,.detail-page h1{font-family:"DM Serif Display",serif;font-weight:400;font-size:clamp(54px,7vw,94px);line-height:.95;letter-spacing:-.04em;margin:22px 0 26px}.hero h1 em,.section-heading h2 em,.paper-callout h2 em{color:var(--coral);font-style:italic}.hero-copy>p{font-size:19px;max-width:495px;color:#514c45;margin-bottom:32px}.search-wrap{height:58px;max-width:485px;border:1px solid var(--ink);background:#fffdf8;display:flex;align-items:center;gap:12px;padding:0 17px;box-shadow:5px 5px 0 var(--coral)}.search-wrap svg{color:var(--coral)}.search-wrap input{border:0;outline:0;background:transparent;width:100%;font-size:16px;color:var(--ink)}.search-results{background:#fffdf8;border:1px solid var(--ink);max-width:485px;box-shadow:5px 5px 0 var(--coral);position:relative;z-index:2}.search-results a{display:flex;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--line);font-size:14px}.search-results a:last-child{border:0}.search-results a:hover{background:var(--paper-deep);color:var(--coral-deep)}.hero-note{align-self:end;padding:0 0 86px 32px;color:var(--muted);font-size:13px}.note-index{font-family:"DM Serif Display";font-size:38px;color:var(--ink)}.note-line{display:block;width:100px;height:1px;background:var(--coral);margin-top:17px}.section-block{padding:100px 0 92px}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:34px}.section-heading h2,.paper-callout h2{font-family:"DM Serif Display";font-size:50px;line-height:1.02;font-weight:400;letter-spacing:-.03em;margin:16px 0 0}.text-link{display:flex;align-items:center;gap:8px;color:var(--coral-deep);font-weight:600;font-size:14px;border-bottom:1px solid var(--coral);padding-bottom:6px}.featured-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.feature-card{background:#fffdf8;border:1px solid var(--line);padding:24px;min-height:220px;position:relative;transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);background:#fff}.card-top{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}.card-icon{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--coral);color:var(--coral);font-family:"DM Serif Display";font-size:20px}.feature-card h3{font-family:"DM Serif Display";font-size:27px;font-weight:400;margin:36px 0 8px}.feature-card p{color:var(--muted);font-size:14px;max-width:190px}.card-arrow{position:absolute;right:23px;bottom:24px;color:var(--coral)}.card-1,.card-4{margin-top:28px}.categories-section{padding:18px 0 112px}.category-list{border-top:1px solid var(--ink);margin-top:24px}.category-list a{display:grid;grid-template-columns:90px 1fr 28px;align-items:center;padding:18px 4px;border-bottom:1px solid var(--line);transition:padding .18s ease-out,color .18s ease-out}.category-list a:hover{padding-left:14px;color:var(--coral)}.category-list span{font-size:12px;color:var(--coral)}.category-list strong{font-family:"DM Serif Display";font-weight:400;font-size:31px}.paper-callout{margin-bottom:110px;padding:58px 65px;background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:space-between;position:relative;overflow:hidden}.paper-callout .eyebrow{color:#f49887}.paper-callout h2{font-size:48px}.paper-callout p{color:#c7c1b6;max-width:490px;margin:24px 0 0}.callout-mark{font-family:"DM Serif Display";font-size:190px;color:var(--coral);line-height:1;transform:rotate(-8deg);margin-right:65px}.footer{background:var(--ink)}footer{background:var(--ink);color:var(--paper);padding:62px 0 26px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}.footer-brand{color:var(--paper)}footer p{color:#b7b0a5;font-size:14px}footer h4{font-size:11px;text-transform:uppercase;letter-spacing:.16em;color:#f49887;margin:5px 0 18px}footer a{display:block;color:#d5cec3;font-size:14px;margin:8px 0}.footer-bottom{border-top:1px solid #514D47;padding-top:20px;margin-top:54px;display:flex;justify-content:space-between;color:#8f887e;font-size:12px}.detail-page,.listing-page,.static-page{padding:56px 0 110px}.breadcrumbs{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:13px;margin-bottom:62px}.breadcrumbs a:hover{color:var(--coral)}.detail-layout{display:grid;grid-template-columns:minmax(0,780px) 220px;gap:90px}.detail-page h1{font-size:68px;margin:19px 0}.lead{font-size:19px;line-height:1.55;color:#5d574f;max-width:680px}.calculator-panel{background:#fffdf8;border:1px solid var(--line);padding:31px;margin:40px 0 60px;box-shadow:8px 8px 0 var(--paper-deep)}.fields-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.field{display:flex;flex-direction:column;gap:7px;font-size:12px;color:var(--muted);font-weight:600}.field input,.field select,.op-select{height:47px;border:1px solid #CFC5B5;background:#fff;padding:0 12px;color:var(--ink);outline:none}.field input:focus,.field select:focus{border-color:var(--coral);box-shadow:0 0 0 3px #e85d4a1f}.field-suffix{align-self:center;margin:18px -8px 0;color:var(--coral-deep);font-weight:700}.op-select{align-self:end;width:58px;height:47px}.precision-control{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:12px;font-weight:600;margin-top:23px;margin-right:12px}.precision-control select{height:43px;border:1px solid #CFC5B5;background:#fff;padding:0 9px;color:var(--ink)}.ad-slot{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 0;color:var(--muted);font-size:11px;letter-spacing:.12em;text-transform:uppercase;text-align:center;margin:28px 0}.primary-btn{border:0;background:var(--coral);color:#fff;padding:13px 19px;display:inline-flex;align-items:center;gap:10px;font-weight:700;margin-top:23px;transition:transform .16s ease-out,background .16s ease-out}.primary-btn:hover{background:var(--coral-deep)}.primary-btn:active{transform:scale(.97)}.result-card{border-left:7px solid var(--coral);background:#f1e9dc;padding:24px 25px;margin-top:28px;min-height:142px;position:relative;background-image:radial-gradient(rgba(64,50,35,.06) .55px,transparent .55px);background-size:6px 6px}.result-card-empty{border-left-color:#c9a99c}.result-card-empty .result-number{color:#a69a8e}.result-label{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--coral-deep);font-weight:700}.result-number{font-family:"DM Serif Display";font-size:clamp(42px,5vw,62px);line-height:1.05;margin:10px 0 17px;overflow-wrap:anywhere;letter-spacing:-.03em}.result-actions{display:flex;gap:18px}.result-actions button{border:0;background:transparent;padding:0;color:var(--muted);font-size:12px;display:flex;align-items:center;gap:6px}.result-actions button:hover{color:var(--coral)}.result-empty{display:flex;align-items:center;gap:9px;margin-top:27px;color:#8a8379;font-size:13px}.result-empty svg{color:var(--coral)}.aside-index,.aside-related{border-top:1px solid var(--ink);padding-top:16px;margin-top:22px;position:sticky;top:110px}.aside-index a{display:block;color:var(--muted);font-size:13px;border-bottom:1px solid var(--line);padding:10px 0}.aside-related{position:static;margin-top:42px}.aside-related a{display:flex;justify-content:space-between;gap:8px;border-bottom:1px solid var(--line);padding:12px 0;font-size:13px}.aside-related a:hover{color:var(--coral)}.content-section{color:#514c45}.content-section h2{font-family:"DM Serif Display";font-weight:400;font-size:33px;color:var(--ink);margin:42px 0 12px}.formula-box{background:var(--ink);color:#f8d1c9;padding:23px 22px 23px 27px;font-family:monospace;font-size:15px;border-left:7px solid var(--coral);position:relative}.formula-box:before{content:"REFERENCE";display:block;font-family:IBM Plex Sans;font-size:10px;letter-spacing:.16em;color:#f49887;margin-bottom:10px}.coming-note{border-top:1px solid var(--line);color:var(--muted);font-size:13px;padding:14px 0 0;font-style:italic}.content-section details{border-top:1px solid var(--line);padding:15px 0}.content-section summary{cursor:pointer;font-weight:600}.content-section details p{margin:12px 0 0;color:var(--muted)}.listing-page h1,.static-page h1{font-size:72px;margin:18px 0}.listing-page>.lead{max-width:630px;margin-bottom:70px}.directory section{margin-bottom:56px}.directory-heading{display:flex;align-items:center;gap:18px;border-bottom:1px solid var(--ink);padding-bottom:12px}.directory-heading span{font-size:12px;color:var(--coral)}.directory-heading h2{font-family:"DM Serif Display";font-size:33px;font-weight:400;margin:0}.directory-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:12px}.directory-grid a{display:grid;grid-template-columns:40px 1fr 18px;align-items:center;gap:12px;background:#fffdf8;border:1px solid var(--line);padding:15px 17px;transition:transform .18s ease-out,box-shadow .18s ease-out}.directory-grid a:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.directory-grid h3{font-size:15px;margin:0 0 3px}.directory-grid p{font-size:12px;color:var(--muted);margin:0}.history-page{padding:56px 0 110px}.history-page h1{font-family:"DM Serif Display";font-size:72px;line-height:.95;font-weight:400;letter-spacing:-.04em;margin:18px 0 26px}.history-empty{background:#fffdf8;border:1px solid var(--line);border-left:7px solid var(--coral);padding:30px;margin-top:48px;max-width:720px}.history-empty svg{color:var(--coral)}.history-empty h2{font-family:"DM Serif Display";font-weight:400;font-size:34px;margin:15px 0 6px}.history-empty p{color:var(--muted);margin:0}.history-toolbar{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--ink);border-bottom:1px solid var(--line);padding:14px 0;color:var(--muted);font-size:13px;margin-top:48px}.history-toolbar button{display:flex;align-items:center;gap:7px;border:0;background:transparent;color:var(--coral-deep);font-size:13px}.history-list{max-width:820px}.history-item{display:flex;justify-content:space-between;gap:28px;align-items:center;background:#fffdf8;border-bottom:1px solid var(--line);padding:22px 0}.history-item h2{font-family:"DM Serif Display";font-weight:400;font-size:27px;margin:7px 0 2px}.history-item p{font-family:"DM Serif Display";font-size:23px;color:var(--coral-deep);margin:0}.history-item>button{border:0;background:transparent;color:var(--muted);padding:8px}.history-item>button:hover{color:var(--coral)}.static-copy{max-width:720px;font-size:19px;color:#5d574f}.static-copy p{margin:20px 0 28px}.inline-btn{margin-top:10px}.pricing-card{background:#fffdf8;border:1px solid var(--line);padding:28px;margin-top:40px;color:var(--ink)}.pricing-card span{font-size:11px;letter-spacing:.16em;color:var(--coral-deep);font-weight:700}.pricing-card h2{font-family:"DM Serif Display";font-size:38px;font-weight:400;margin:12px 0}.pricing-card p{font-size:14px;margin:0}@media (max-width:800px){.container{width:min(100% - 32px,680px)}.header-inner{height:68px}.nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:14px 18px;flex-direction:column;gap:0}.nav.open{display:flex}.nav a{padding:12px 0;border-bottom:1px solid var(--line)}.mobile-menu{display:block}.hero,.hero-grid{min-height:570px}.hero-photo{background:linear-gradient(90deg,#f6f2eafa,#f6f2ead1 75%),url(/manus-storage/smartcalc-hero-paper_3b23f075.jpg) center/cover}.hero-grid{display:block}.hero-copy{padding:76px 0 0}.hero h1{font-size:66px}.hero-note{padding:48px 0 30px}.section-block{padding:75px 0}.section-heading{display:block}.section-heading h2,.paper-callout h2{font-size:41px}.text-link{display:inline-flex;margin-top:23px}.featured-grid{grid-template-columns:1fr 1fr}.card-1,.card-4{margin-top:0}.paper-callout{padding:40px 28px;margin-bottom:75px}.callout-mark{font-size:110px;margin-right:0}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.detail-page,.listing-page,.static-page,.history-page{padding:40px 0 80px}.history-page h1{font-size:57px}.breadcrumbs{margin-bottom:38px;overflow:hidden;white-space:nowrap}.detail-layout{display:block}.detail-page h1,.listing-page h1,.static-page h1{font-size:57px}.detail-layout aside{display:none}.calculator-panel{padding:20px;margin-top:30px}.fields-grid{grid-template-columns:1fr}.field-suffix{display:none}.directory-grid{grid-template-columns:1fr}}@media (max-width:480px){.hero h1{font-size:55px}.featured-grid{grid-template-columns:1fr}.feature-card{min-height:190px}.category-list a{grid-template-columns:48px 1fr 24px}.category-list strong{font-size:25px}.paper-callout{display:block}.callout-mark{position:absolute;right:20px;bottom:0}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin:6px 0}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}