/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before{box-sizing:border-box;border:0 solid;margin:0;padding:0}::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color 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components;@layer utilities{.relative{position:relative}.start{inset-inline-start:var(--spacing)}.inline{display:inline}.table{display:table}}:root{--ink:#263149;--muted:#667085;--line:#d8ded9;--soft:#f4f6f2;--moss:#647261;--cream:#fbfaf6;--warning:#765537;--warning-bg:#f8f1e7}*{box-sizing:border-box}body{background:var(--cream);color:var(--ink);margin:0;font-family:Arial,Noto Sans TC,PingFang TC,Microsoft JhengHei,sans-serif}.page-shell{background:radial-gradient(circle at 90% 5%, #e8eee4 0, transparent 24rem), var(--cream);min-height:100vh;padding:56px 20px 72px}.calculator-wrap{width:min(760px,100%);margin:auto}.eyebrow{color:var(--moss);letter-spacing:.14em;margin:0 0 12px;font-size:12px;font-weight:700}h1{color:#303b66;margin:0 0 13px;font-family:Georgia,Noto Serif TC,serif;font-size:clamp(32px,5vw,46px);line-height:1.15}.lead{color:var(--muted);margin:0 0 32px;font-size:17px;line-height:1.8}.card,.info-card{border:1px solid 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var(--line);color:var(--ink);background:#fff;border-radius:999px;padding:10px 16px;font-size:15px;transition:all .15s}:is(button:hover,button:focus-visible){background:#f1f3f9;border-color:#303b66;outline:none}.info-card{margin-top:24px}.info-card h2{color:#303b66;margin:0 0 15px;font-family:Georgia,Noto Serif TC,serif;font-size:27px}.info-card h3{margin:26px 0 8px;font-size:17px}.info-card p,.info-card li{color:#3e4653;line-height:1.85}.info-card ul{margin:0;padding-left:1.35em}.info-card aside{background:var(--warning-bg);color:var(--warning);border-radius:13px;margin-top:19px;padding:16px 18px;line-height:1.75}.oil-group h3{margin-bottom:3px}.oil-group p{margin:0}.footnote{border-top:1px solid var(--line);margin:28px 0 0;padding-top:18px;font-size:13px;color:var(--muted)!important}@media (max-width:520px){.page-shell{padding:32px 15px 50px}.card,.info-card{border-radius:18px;padding:20px}.result strong{font-size:40px}}