:root{--paper:#f8f5ef;--white:#fffefa;--ink:#172337;--muted:#505c69;--blue:#2043d5;--blue-deep:#152d99;--blue-tint:#ecf0fe;--lime:#f9c9b6;--line:#d7d5d1;--coral:#f87552;--mint:#dbe9df;--radius:16px}
body{background:var(--paper)}[hidden]{display:none!important}button,select,textarea,input{font:inherit}select,textarea,input{caret-color:var(--blue)}select:focus-visible,textarea:focus-visible{outline:3px solid var(--blue);outline-offset:3px}::selection{background:var(--coral);color:var(--ink)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.container{width:min(1320px,calc(100% - 96px))}.site-header{background:var(--paper)}.header-inner{min-height:86px}.brand-name{font-size:26px;letter-spacing:-.035em}.brand-name>span{color:var(--blue)}#main-nav>a{display:flex;align-items:center;gap:8px}#main-nav svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6}.button{border-radius:8px}.lens-hero{display:grid;grid-template-columns:.85fr 1.3fr;align-items:center;gap:20px;min-height:615px;padding-block:50px 55px}.hero-copy{position:relative;z-index:1}.hero-copy h1{font-size:clamp(44px,4.7vw,68px);line-height:1.34;letter-spacing:-.035em}.hero-copy h1 span{color:var(--blue)}.hero-copy>p{font-size:18px;line-height:1.85;margin-block:24px 28px}.hero-copy .button{min-width:240px}.hero-caption{display:block;font-size:12px;color:var(--muted);margin-top:14px}.hero-art{margin:0;min-width:0;position:relative}.hero-art img{display:block;width:100%;height:auto;border-radius:50% 50% 16px 16px}.hero-art figcaption{font:500 12px/1.6 var(--font-brand);text-align:right;margin-top:12px;color:var(--muted)}.promise-strip{background:var(--mint)}.promise-strip>.container{display:flex;justify-content:space-between;gap:20px;padding-block:20px;align-items:center}.promise-strip p{font-size:19px;font-weight:600}.promise-strip span{font-size:14px}.check-section{background:var(--blue);padding-block:86px}.check-section .section-heading{color:white;grid-template-columns:1fr 1fr;margin-bottom:36px;gap:60px}.check-section h2{font:600 clamp(38px,4.2vw,60px)/1.2 var(--font-brand);letter-spacing:-.035em}.check-section h2 span{color:var(--lime)}.check-section .section-heading>p{color:#e4e9ff;font-size:16px;justify-self:end}.workspace{background:var(--white);border-radius:var(--radius);color:var(--ink);overflow:hidden}.workspace-top{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:18px 28px;border-bottom:1px solid var(--line)}.mode-buttons{display:flex;gap:4px;flex-wrap:wrap}.mode-button,.quiet-button{border:0;background:transparent;padding:12px 16px;min-height:46px;border-radius:6px;font-size:13px}.mode-button.active{background:var(--blue-tint);color:var(--blue-deep);font-weight:600}.mode-button:hover,.quiet-button:hover{background:#e5e8e0}.quiet-button{text-decoration:underline;text-underline-offset:4px;white-space:nowrap}.workspace-body{display:grid;grid-template-columns:.85fr 1.3fr}.input-side{padding:34px;border-right:1px solid var(--line);background:#f5f4ed;min-width:0}.mode-panel h3{font-size:25px;line-height:1.5;letter-spacing:-.02em}.mode-panel p{font-size:14px;line-height:1.85;margin-top:14px;color:var(--muted)}.mode-panel .demo-caption{font-size:12px;margin-top:24px}.mode-panel .text-link{margin-top:16px;border:0;padding:0;background:transparent}.text-link svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6}.format-help{margin-top:30px;border-top:1px solid var(--line);padding-top:8px;font-size:12px}.format-help summary,.result-details summary{display:flex;align-items:center;justify-content:space-between;gap:12px;list-style:none;min-height:48px;cursor:pointer;font-weight:550}.format-help summary::-webkit-details-marker,.result-details summary::-webkit-details-marker{display:none}.format-help svg,.result-details svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.6}.format-help[open] svg,.result-details[open] svg{transform:rotate(45deg)}.format-help p{margin-block:10px;line-height:1.85;color:var(--muted);overflow-wrap:anywhere}.format-help code{font-size:12px;line-height:1.7}.local-note{display:flex;gap:12px;margin-top:28px;align-items:flex-start}.local-note svg{width:20px;height:20px;fill:none;stroke:var(--blue);stroke-width:1.5;margin-top:4px}.local-note p{font-size:12px;line-height:1.8;color:var(--muted)}.result-side{padding:32px 40px;min-width:0}.tool-status{font-size:13px;color:var(--muted)}.tool-status:empty{display:none}.tool-error{padding:18px 20px;background:#fff0ea;color:#902e16;font-size:14px;line-height:1.8;border-radius:8px;margin-bottom:20px;overflow-wrap:anywhere}.tool-error ul{margin:8px 0 0;padding-left:20px}.result-toolbar{display:flex;gap:14px;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);flex-wrap:wrap}.result-toolbar label{display:flex;align-items:center;gap:8px}.result-toolbar select{background:var(--white);border:1px solid #b5b9be;border-radius:5px;padding:5px 7px;color:var(--ink);min-height:36px}.net-result{margin-block:24px}.net-result>span{font-size:14px}.net-result>div{display:flex;align-items:baseline;gap:12px}.net-result strong{font:650 clamp(36px,3.4vw,52px)/1.5 var(--font-brand);font-variant-numeric:tabular-nums;letter-spacing:-.03em;color:var(--blue)}.net-result>div>span{font:500 14px/1.4 var(--font-brand)}.net-result>p{font-size:12px;color:var(--muted)}.calculation{margin:0}.calculation>div{display:flex;align-items:baseline;justify-content:space-between;gap:18px;padding-block:9px;font-size:14px}.calculation dd{margin:0;font-family:var(--font-brand);font-variant-numeric:tabular-nums;white-space:nowrap}.calculation .sum-line{border-top:1px solid var(--line);margin-top:8px;padding-top:14px;font-weight:600}.cost-summary{display:flex;gap:18px;justify-content:space-between;padding-block:18px;font-size:12px;flex-wrap:wrap}.cost-summary p+p{margin:0}.cost-summary strong{font:650 13px/1.5 var(--font-brand);font-variant-numeric:tabular-nums;margin-left:5px}.flip-insight{background:var(--mint);padding:14px 16px;font-size:13px;border-radius:8px;line-height:1.8;margin:0 0 16px}.result-details{border-top:1px solid var(--line);font-size:13px}.table-scroll{overflow-x:auto;max-width:100%;padding-bottom:12px}.table-scroll table{border-collapse:collapse;width:100%;font-size:12px;font-variant-numeric:tabular-nums}.table-scroll th{text-align:right;color:var(--muted);font-weight:500;white-space:nowrap}.table-scroll td{text-align:right;white-space:nowrap}.table-scroll td:first-child,.table-scroll th:first-child{text-align:left}.table-scroll th,.table-scroll td{padding:10px 7px;border-bottom:1px solid var(--line)}.table-scroll .flipped{color:#94361d}.result-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;margin-top:20px}.result-bottom button{border:0;padding:0;background:transparent}.result-bottom>span{font-size:12px;color:var(--muted)}.fine,.mode-panel .fine{font-size:12px;line-height:1.85;color:var(--muted);margin-top:12px}.result-side>.fine,#tool-results>.fine{margin-top:16px}.mode-panel label{display:block;font-size:12px;margin-top:15px;font-weight:500}.mode-panel textarea,.mode-panel input:not([type=file]),.mode-panel select{width:100%;border:1px solid #aab0b6;background:var(--white);border-radius:6px;padding:10px;color:var(--ink);min-height:44px;margin-top:5px;font-size:14px}.mode-panel textarea{font:12px/1.7 var(--font-brand);resize:vertical}.mode-panel textarea::placeholder,.mode-panel input::placeholder{color:#636d78;opacity:1}.mode-panel input[type=file]{display:block;width:100%;font-size:12px;margin-top:8px}.mode-panel input[type=file]::file-selector-button{padding:10px;border:1px solid #aab0b6;border-radius:5px;margin-right:8px;background:var(--white);font:12px var(--font-body);color:var(--ink);cursor:pointer}.mode-panel .button{width:100%;font-size:13px;margin-top:18px}.manual-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}.manual-grid .wide{grid-column:1/-1}.manual-grid label{min-width:0}.manual-grid select{padding-inline:5px}.manual-grid input{text-transform:none}#tool-empty{padding-block:50px}#tool-empty h3{font-size:26px}#tool-empty p{font-size:15px;margin-block:16px 26px;color:var(--muted)}.story-section{display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:center;padding-block:100px}.story-section figure{margin:0}.story-section img{display:block;width:100%;height:auto;border-radius:16px}.story-copy h2{font-size:clamp(30px,3vw,44px);line-height:1.5}.how-list{list-style:none;counter-reset:steps;padding:0;margin:30px 0 15px}.how-list li{counter-increment:steps;position:relative;padding-left:40px;margin-block:22px}.how-list li:before{content:counter(steps);position:absolute;left:0;top:0;font:600 16px/1.9 var(--font-brand);color:var(--blue)}.how-list strong{font-size:15px;font-weight:600}.how-list p{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.85}.reading-section{padding-bottom:100px}.reading-section .section-heading{margin-bottom:34px}.reading-section .section-heading h2{font-size:40px;line-height:1.45}.reading-section .section-heading>p{font-size:15px;justify-self:end}.editorial-guides{display:grid;grid-template-columns:1fr 1fr;gap:40px}.guide-feature{display:block;text-decoration:none;border-radius:16px;overflow:hidden;background:#e3eafd;transition:background-color 180ms}.guide-feature:hover{background:#d3defb}.guide-feature>img{display:block;width:100%;height:auto;aspect-ratio:2/1;object-fit:cover}.guide-feature>div{display:flex;justify-content:space-between;gap:25px;align-items:center;padding:27px 32px}.guide-feature h3{font-size:26px;line-height:1.45}.guide-feature svg,.guide-links svg{width:25px;height:25px;fill:none;stroke:currentColor;stroke-width:1.5}.guide-links{display:grid}.guide-links>a{display:flex;align-items:center;justify-content:space-between;gap:24px;text-decoration:none;padding:30px;border-top:1px solid var(--line)}.guide-links>a:last-child{border-bottom:1px solid var(--line)}.guide-links>a:hover{background:var(--mint)}.guide-links h3{font-size:23px;line-height:1.55}.guide-links p{font-size:13px;color:var(--muted);margin-top:10px}.xesun-section{background:var(--coral);padding-block:70px}.xesun-layout{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center}.xesun-layout h2{font-size:44px;line-height:1.4}.xesun-layout h2 span{font-family:var(--font-brand)}.xesun-layout p{font-size:14px;line-height:1.9;max-width:45ch;margin-top:20px}.xesun-layout .text-link{color:var(--ink);margin-top:18px}.xesun-action .paper-button{background:var(--white);color:var(--ink);width:100%;max-width:420px}.paper-button:hover{background:var(--ink);color:white}.xesun-action>p{font-size:12px;max-width:53ch;margin-top:16px}.xesun-action .commercial-note{font-size:12px}.commercial-note a{font-weight:600;margin-left:8px}.faq-section{gap:100px}.faq-heading h2{font-size:36px;line-height:1.45}.faq-list summary{font-size:15px}.faq-list details p{font-size:14px}.site-footer{background:#eeece5}.footer-top{margin-bottom:25px}.footer-bottom svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.6}.footer-legal{font-size:12px}.legal-main h1{line-height:1.5}.guide-main .guide-context{font-size:12px;color:var(--muted);margin-block:28px}.guide-toc{background:var(--mint);padding:16px 20px;border-radius:12px}.guide-toc ul{margin:0}.guide-section{margin-top:42px}.guide-section p{font-size:16px;line-height:1.95;color:var(--muted)}.guide-section .guide-section-source{font-size:12px;margin-top:15px}.article-source{background:var(--blue-tint)}
@media(prefers-reduced-motion:no-preference){.hero-copy{animation:headline-settle 700ms cubic-bezier(.16,1,.3,1)}@keyframes headline-settle{from{transform:translateY(10px);filter:blur(1px)}to{transform:translateY(0);filter:blur(0)}}}
@media(max-width:1100px){.container{width:calc(100% - 64px)}.lens-hero{grid-template-columns:.9fr 1.1fr;min-height:560px}.hero-copy h1{font-size:52px}.hero-copy>p{font-size:16px}.workspace-top{padding-inline:20px}.input-side{padding:26px}.result-side{padding:28px}.story-section{gap:40px}.xesun-layout{gap:60px}}
@media(max-width:850px){.container{width:calc(100% - 44px)}.header-inner{min-height:76px}.brand-name{font-size:24px}.lens-hero{grid-template-columns:1fr 1fr;min-height:510px;gap:12px}.hero-copy h1{font-size:44px}.hero-copy>p{font-size:15px}.hero-copy .button{min-width:210px;font-size:14px}.hero-art img{border-radius:50% 50% 12px 12px}.promise-strip p{font-size:16px}.promise-strip span{font-size:12px}.check-section{padding-block:60px}.check-section .section-heading{gap:30px}.workspace-body{grid-template-columns:.85fr 1.2fr}.workspace-top{padding:12px;gap:8px}.mode-button{font-size:12px;padding-inline:10px}.quiet-button{font-size:12px;padding-inline:8px}.input-side{padding:24px 20px}.result-side{padding:24px}.mode-panel h3{font-size:22px}.mode-panel p{font-size:13px}.net-result strong{font-size:38px}.cost-summary{gap:8px}.story-section{padding-block:70px;gap:32px}.story-copy h2{font-size:29px}.how-list li{margin-block:16px;padding-left:28px}.how-list p{font-size:12px}.story-copy .text-link{font-size:12px}.reading-section{padding-bottom:70px}.reading-section .section-heading h2{font-size:34px}.editorial-guides{gap:25px}.guide-feature>div{padding:22px}.guide-feature h3{font-size:23px}.guide-links>a{padding:22px}.guide-links h3{font-size:20px}.xesun-layout{gap:40px}.xesun-layout h2{font-size:38px}.faq-section{gap:35px}#main-nav{background:var(--paper)}}
@media(max-width:600px){.container{width:calc(100% - 36px)}.lens-hero{display:flex;flex-direction:column;align-items:stretch;gap:24px;padding-block:34px 24px}.hero-copy h1{font-size:45px;line-height:1.4}.hero-copy>p{font-size:15px;margin-block:18px 23px;max-width:36ch}.hero-copy .button{width:100%;min-height:52px}.hero-caption{font-size:12px;text-align:center;margin-top:11px}.hero-art{margin:0}.hero-art img{border-radius:16px;aspect-ratio:1.5/1;object-fit:cover}.hero-art figcaption{font-size:12px;margin-top:8px}.promise-strip>.container{flex-direction:column;align-items:flex-start;gap:4px;padding-block:18px}.promise-strip p{font-size:16px}.promise-strip span{font-size:12px}.check-section{padding-block:42px}.check-section .section-heading{grid-template-columns:1fr;gap:17px;margin-bottom:24px}.check-section h2{font-size:40px}.check-section .section-heading>p{font-size:13px;justify-self:start}.workspace-top{align-items:flex-start;flex-wrap:wrap;gap:4px;padding:12px}.mode-buttons{width:100%;gap:2px}.mode-button{font-size:12px;flex:1;padding:10px 5px;min-height:44px}.quiet-button{padding:6px 5px;min-height:36px;margin-left:auto;font-size:12px}.workspace-body{display:flex;flex-direction:column}.input-side{padding:23px 20px;border-right:0;border-bottom:1px solid var(--line)}.mode-panel h3{font-size:23px}.mode-panel h3 br{display:none}.mode-panel p{font-size:13px}.mode-panel .demo-caption{font-size:12px;margin-top:12px}.mode-panel .text-link{margin-top:9px;font-size:13px}.format-help{margin-top:18px;padding-top:0}.local-note{margin-top:14px}.local-note p br:nth-of-type(1){display:none}.local-note p{font-size:12px}.result-side{padding:24px 20px}.net-result{margin-block:20px}.net-result strong{font-size:44px}.result-toolbar{font-size:12px}.calculation>div{font-size:13px;padding-block:8px}.cost-summary{font-size:12px;flex-direction:column;gap:7px;padding-block:16px}.flip-insight{font-size:12px;padding:12px}.result-details{font-size:12px}.result-bottom{gap:4px;margin-top:16px}.result-bottom>span{font-size:12px}.result-bottom .text-link{font-size:12px}.story-section{display:flex;flex-direction:column;align-items:stretch;gap:28px;padding-block:54px}.story-copy h2{font-size:31px;line-height:1.5}.how-list{margin-top:22px}.how-list li{margin-block:20px;padding-left:35px}.how-list strong{font-size:14px}.how-list p{font-size:13px}.story-copy .text-link{font-size:13px}.reading-section{padding-bottom:54px}.reading-section .section-heading{gap:16px;margin-bottom:25px}.reading-section .section-heading h2{font-size:32px}.reading-section .section-heading>p{font-size:13px;justify-self:start}.editorial-guides{grid-template-columns:1fr;gap:20px}.guide-feature>img{aspect-ratio:1.9/1}.guide-feature h3{font-size:24px}.guide-links>a{padding:25px 7px}.guide-links h3{font-size:22px}.guide-links p{font-size:12px}.xesun-section{padding-block:44px}.xesun-layout{grid-template-columns:1fr;gap:26px}.xesun-layout h2{font-size:36px}.xesun-layout>div>p{margin-top:16px;font-size:13px}.xesun-action .paper-button{max-width:none;font-size:14px}.xesun-action>p{font-size:12px!important}.faq-section{padding-block:52px;gap:26px}.faq-heading h2{font-size:32px}.faq-heading p{font-size:13px}.faq-heading p br{display:none}.faq-list summary{font-size:14px;padding-block:20px}.faq-list details p{font-size:13px}.footer-top>.brand-name{font-size:26px}.footer-top>span{font-size:12px}.footer-bottom{font-size:12px}.footer-bottom nav{gap:6px 17px}.footer-legal{font-size:12px}.desktop-break{display:none}}