@layer theme{:root,:host{--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, 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;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::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,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color 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optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.static{position:static}}:root{--background:#f5f7f5;--surface:#fff;--surface-muted:#eef2ef;--text:#122019;--muted:#5f6e65;--line:#d9e1dc;--brand:#154c36;--brand-strong:#0d3827;--accent:#d8f06f;--danger:#9b2c2c;--shadow:0 16px 50px #12201914}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--background);color:var(--text);margin:0;font-family:Arial,PingFang SC,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.site-container{width:min(1160px,100% - 32px);margin:0 auto}.narrow-container{width:min(850px,100%)}.site-header{z-index:50;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#f5f7f5eb;border-bottom:1px solid 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span{color:var(--brand)}.hero-copy{max-width:720px;color:var(--muted);font-size:18px;line-height:1.8}.hero-actions{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.primary-button,.secondary-button{border:1px solid var(--brand);border-radius:12px;justify-content:center;align-items:center;min-height:44px;padding:0 18px;font-weight:700;display:inline-flex}.primary-button{background:var(--brand);color:#fff}.secondary-button{color:var(--brand);background:0 0}.hero-card{background:var(--brand);color:#fff;box-shadow:var(--shadow);border-radius:24px;padding:28px}.hero-card-label{color:#bdd4c8;font-size:13px}.hero-card strong{margin:12px 0 6px;font-size:38px;display:block}.hero-card p{color:#dce8e1;line-height:1.6}.metric-stack{gap:12px;margin-top:24px;display:grid}.metric-stack div{border-top:1px solid #ffffff26;justify-content:space-between;padding:14px 0;display:flex}.metric-stack span{color:#bdd4c8}.section{padding:64px 0}.section-heading{justify-content:space-between;align-items:end;gap:24px;margin-bottom:26px;display:flex}.section-heading h2{letter-spacing:-.04em;margin:8px 0 0;font-size:clamp(30px,4vw,48px)}.section-heading p{max-width:520px;color:var(--muted);margin:0;line-height:1.7}.tools-grid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.tool-card{border:1px solid var(--line);background:var(--surface);border-radius:20px;flex-direction:column;min-height:230px;padding:24px;transition:transform .2s,box-shadow .2s;display:flex}.tool-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}.tool-card .card-index{background:var(--surface-muted);width:34px;height:34px;color:var(--brand);border-radius:10px;place-items:center;font-size:12px;font-weight:800;display:grid}.tool-card h3{margin:22px 0 10px;font-size:21px}.tool-card p{color:var(--muted);margin:0;line-height:1.7}.tool-card .card-link{color:var(--brand);margin-top:auto;padding-top:24px;font-weight:700}.principles-grid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.principle-card{border-top:3px solid var(--brand);background:var(--surface);padding:26px}.principle-card h3{margin:0 0 10px}.principle-card p{color:var(--muted);line-height:1.7}.tool-hero{padding:58px 0 38px}.back-link{color:var(--brand);font-size:14px;font-weight:700}.tool-hero h1{letter-spacing:-.045em;margin:18px 0 12px;font-size:clamp(34px,5vw,58px)}.tool-hero p{max-width:760px;color:var(--muted);margin:0;font-size:18px;line-height:1.7}.tool-layout{grid-template-columns:minmax(0,1fr) 280px;align-items:start;gap:22px;padding-bottom:36px;display:grid}.calculator-panel{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);border-radius:24px;padding:clamp(20px,4vw,38px)}.tool-aside{gap:16px;display:grid;position:sticky;top:94px}.aside-card{border:1px solid 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16px;font-size:15px}.field-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.compact-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.field-group{align-content:start;gap:7px;display:grid}.field-label{font-size:13px;font-weight:700}.field-control{border:1px solid var(--line);background:var(--background);border-radius:11px;align-items:center;min-height:44px;padding:0 12px;display:flex}.field-control:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px #154c3614}.field-control input{background:0 0;border:0;outline:none;width:100%}.field-suffix{color:var(--muted);white-space:nowrap;font-size:12px}.field-helper{color:var(--muted);font-size:11px;line-height:1.4}.results-grid{border-top:1px solid var(--line);grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:28px;padding-top:28px;display:grid}.result-item{background:var(--surface-muted);border-radius:15px;align-content:center;min-height:96px;padding:16px;display:grid}.result-item 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.allocation-row{grid-template-columns:repeat(3,1fr)}.bar-comparison{background:var(--background);border-radius:16px;gap:14px;margin-top:26px;padding:20px;display:grid}.bar-row{grid-template-columns:130px 1fr 110px;align-items:center;gap:12px;font-size:13px;display:grid}.bar-row>div{background:var(--line);border-radius:99px;height:12px;overflow:hidden}.bar-row i{border-radius:inherit;background:var(--brand);height:100%;display:block}.bar-row strong{text-align:right}.article-grid{grid-template-columns:1fr 1fr;gap:22px;padding-top:20px;padding-bottom:72px;display:grid}.content-card{border:1px solid var(--line);background:var(--surface);border-radius:20px;padding:30px}.content-card h2{margin-top:0;font-size:27px}.content-card p,.content-card li{color:var(--muted);line-height:1.8}.content-card code{background:var(--surface-muted);color:var(--brand);border-radius:5px;padding:2px 5px}.faq-list details{border-bottom:1px solid var(--line);padding:15px 0}.faq-list details:last-child{border:0}.faq-list summary{cursor:pointer;font-weight:700}.faq-list p{margin-bottom:0}.static-page{padding:70px 0 90px}.static-page article{border:1px solid var(--line);background:var(--surface);border-radius:22px;max-width:800px;padding:38px}.static-page h1{letter-spacing:-.04em;margin-top:0;font-size:46px}.static-page h2{margin-top:34px}.static-page p,.static-page li{color:var(--muted);line-height:1.8}.site-footer{border-top:1px solid var(--line);background:#edf1ee;padding:38px 0}.footer-inner{justify-content:space-between;gap:30px;display:flex}.footer-inner p{max-width:600px;color:var(--muted)}.footer-links{color:var(--muted);align-items:start;gap:18px;font-size:14px;display:flex}@media (max-width:900px){.hero-grid,.tool-layout,.article-grid{grid-template-columns:1fr}.tools-grid{grid-template-columns:repeat(2,1fr)}.principles-grid{grid-template-columns:1fr}.tool-aside{grid-template-columns:1fr 1fr;position:static}.field-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:640px){.site-container{width:min(100% - 20px,1160px)}.header-inner nav a:not(:first-child){display:none}.hero{padding-top:54px}.hero-grid,.tools-grid,.field-grid,.results-grid,.tool-aside{grid-template-columns:1fr}.section-heading,.calculator-heading,.footer-inner{flex-direction:column;align-items:start}.allocation-header,.allocation-row{grid-template-columns:1fr 1fr}.allocation-header span:nth-child(2),.allocation-row span:nth-child(2){display:none}.bar-row{grid-template-columns:1fr}.bar-row strong{text-align:left}.static-page article,.calculator-panel{padding:22px}}