@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 Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) 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{.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}}:root{--ink:#17211b;--muted:#5f6b63;--paper:#f6f5ef;--card:#fff;--line:#dfe3dc;--green:#2f6848;--green-dark:#214c35;--lime:#dce8c7;--orange:#eaa867;--shadow:0 18px 50px #23342914}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);margin:0;font-family:Yu Gothic UI,Hiragino Kaku Gothic ProN,Meiryo,sans-serif;line-height:1.75}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button,a{touch-action:manipulation}h1,h2,h3,p{margin-top:0}h1,h2,h3{letter-spacing:-.025em;line-height:1.25}h1{font-size:clamp(2.25rem,7vw,5.25rem)}h2{font-size:clamp(1.5rem,3vw,2.25rem)}h3{font-size:1.18rem}.shell{width:min(1120px,100% - 32px);margin-inline:auto}.skip-link{z-index:99;background:var(--ink);color:#fff;border-radius:8px;padding:10px 16px;position:fixed;top:-80px;left:16px}.skip-link:focus{top:16px}.site-header{z-index:40;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#f6f5eff0;border-bottom:1px solid #17211b14;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:20px;min-height:72px;display:flex}.brand{letter-spacing:-.03em;font-size:1.08rem;font-weight:800}.brand span{color:var(--green)}.site-header ul,.site-footer ul{margin:0;padding:0;list-style:none}.site-header ul{gap:8px;display:flex}.site-header nav a{border-radius:999px;padding:10px 13px;font-size:.9rem;font-weight:700;display:block}.site-header nav a:hover,.site-header nav a:focus-visible{box-shadow:0 0 0 1px var(--line);background:#fff}.hero{background:linear-gradient(180deg,#eef1e5 0,var(--paper) 100%);padding:clamp(70px,10vw,140px) 0 65px;overflow:hidden}.hero-grid{grid-template-columns:minmax(0,1.5fr) minmax(240px,.6fr);align-items:center;gap:70px;display:grid}.hero h1{max-width:750px;margin:14px 0 24px}.hero p{max-width:680px;color:var(--muted);font-size:clamp(1rem,2vw,1.2rem)}.hero-label,.section-kicker,.eyebrow{color:var(--green);letter-spacing:.16em;text-transform:uppercase;font-size:.72rem;font-weight:900;display:inline-block}.hero-actions,.button-row{flex-wrap:wrap;gap:12px;margin-top:30px;display:flex}.primary-button,.secondary-button{cursor:pointer;border:1px solid #0000;border-radius:10px;justify-content:center;align-items:center;min-height:48px;padding:11px 20px;font-weight:800;display:inline-flex}.primary-button{background:var(--green);color:#fff}.primary-button:hover,.primary-button:focus-visible{background:var(--green-dark)}.secondary-button{border-color:var(--line);color:var(--ink);background:#fff}.primary-button:focus-visible,.secondary-button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible,a:focus-visible{outline-offset:3px;outline:3px solid #eaa867a6}.toolbox-mark{aspect-ratio:4/5;border:2px solid var(--ink);box-shadow:14px 14px 0 var(--lime);background:#fff;border-radius:20px;flex-direction:column;justify-content:space-between;padding:26px;display:flex;transform:rotate(3deg)}.toolbox-mark span{color:var(--orange);font-weight:900}.toolbox-mark strong{font-size:2.1rem;line-height:.95}.toolbox-mark small{letter-spacing:.12em;font-weight:800}.section-block{padding:72px 0}.section-heading{justify-content:space-between;align-items:end;gap:20px;margin-bottom:26px;display:flex}.section-heading h2{margin:6px 0 0}.section-heading>p{color:var(--muted);font-weight:700}.search-section{padding-top:40px}.search-box{display:block}.search-box input{border:1px solid var(--line);width:100%;min-height:62px;box-shadow:var(--shadow);background:#fff;border-radius:14px;padding:0 20px;font-size:1.05rem}.search-results{margin-top:24px}.empty-state{background:#fff;border-radius:14px;grid-column:1/-1;padding:30px}.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.tool-card{border:1px solid var(--line);background:var(--card);border-radius:16px;flex-direction:column;min-height:245px;padding:24px;display:flex;position:relative;box-shadow:0 8px 30px #2334290a}.tool-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.tool-card h3{margin:14px 0 10px}.tool-card h3 a:after{content:"";border-radius:16px;position:absolute;inset:0}.tool-card p{color:var(--muted);font-size:.94rem}.text-link{z-index:1;color:var(--green);margin-top:auto;font-weight:800;position:relative}.category-grid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.category-card{border:1px solid var(--line);background:#fff;border-radius:16px;min-height:250px;padding:28px;position:relative}.category-card span{color:var(--green);font-weight:900}.category-card strong{margin:24px 0 10px;font-size:1.45rem;display:block}.category-card p{color:var(--muted)}.category-card i{font-size:1.5rem;font-style:normal;position:absolute;bottom:20px;right:24px}.purpose-panel{background:var(--ink);color:#fff;border-radius:22px;grid-template-columns:.8fr 1.2fr;gap:50px;padding-inline:clamp(25px,5vw,64px);display:grid}.purpose-panel ul{margin:0;padding:0;list-style:none}.purpose-panel li+li{border-top:1px solid #ffffff26}.purpose-panel a{justify-content:space-between;padding:15px 0;font-weight:800;display:flex}.purpose-panel a:after{content:"→";color:var(--orange)}.page-shell{padding-top:28px;padding-bottom:90px}.breadcrumb ol{color:var(--muted);flex-wrap:wrap;gap:8px;margin:0;padding:0;font-size:.84rem;list-style:none;display:flex}.breadcrumb li:not(:last-child):after{content:"/";color:#99a29b;margin-left:8px}.breadcrumb a{text-underline-offset:3px;text-decoration:underline}.category-hero,.tool-hero{max-width:830px;padding:55px 0 20px}.category-hero h1,.tool-hero h1{margin:12px 0 18px;font-size:clamp(2.2rem,6vw,4.5rem)}.category-hero p,.tool-hero p,.lead{color:var(--muted);font-size:1.08rem}.calculator-panel{border:1px solid var(--line);box-shadow:var(--shadow);background:#fff;border-radius:22px;margin:20px 0 28px;padding:clamp(22px,5vw,46px)}.calculator-panel h2{margin:6px 0 26px}.field-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.field{gap:7px;font-size:.92rem;font-weight:800;display:grid}.input-wrap{display:block;position:relative}.field input,.field textarea{width:100%;color:var(--ink);background:#fff;border:1px solid #bfc7bf;border-radius:10px}.field input{min-height:52px;padding:10px 52px 10px 13px}.field textarea{resize:vertical;padding:14px;font-weight:500}.unit{color:var(--muted);font-weight:700;position:absolute;top:50%;right:14px;transform:translateY(-50%)}.result-region{margin-top:28px}.result-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:28px;display:grid}.result-card{background:#eef3e8;border:1px solid #d8e2ce;border-radius:14px;min-height:135px;padding:20px}.result-card span{color:var(--muted);font-size:.82rem;font-weight:800;display:block}.result-card strong{color:var(--green-dark);margin-top:8px;font-size:clamp(1.55rem,4vw,2.3rem);line-height:1.2;display:block}.result-card p{color:var(--muted);margin:10px 0 0;font-size:.83rem}.error-message{color:#8b341b;background:#fff0e8;border-radius:10px;padding:14px;font-weight:800}.result-explanation{border-left:4px solid var(--orange);background:#fff;padding:24px 28px}.result-explanation h2{font-size:1.25rem}.result-explanation p{color:var(--muted);margin-bottom:0}.content-layout{grid-template-columns:minmax(0,1fr) 300px;gap:50px;padding:70px 0 10px;display:grid}.article-content section{padding:0 0 42px}.article-content h2{font-size:1.65rem}.article-content p,.article-content li{color:#455047}.article-content li+li{margin-top:8px}.formula{background:#eceee9;border-radius:9px;padding:14px 18px;font-weight:800;color:var(--ink)!important}.side-note{border:1px solid var(--line);background:#fff;border-radius:14px;align-self:start;padding:24px;position:sticky;top:100px}.side-note h2{font-size:1.15rem}.side-note p:last-child{color:var(--muted);font-size:.9rem}.faq-list{border-top:1px solid var(--line)}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;padding:18px 4px;font-weight:800}.faq-list details p{padding:0 4px 18px}.legal-content{max-width:760px;padding:60px 0}.legal-content h1{margin:10px 0 18px;font-size:clamp(2.3rem,6vw,4.5rem)}.legal-content h2{margin-top:50px;font-size:1.45rem}.notice{border:1px solid var(--line);background:#fff;border-radius:10px;padding:16px}.not-found{min-height:60vh;padding-block:110px}.not-found h1{margin:12px 0 20px}.not-found p{color:var(--muted);margin-bottom:28px}.site-footer{border-top:1px solid var(--line);background:#e9ebe4;padding:62px 0 25px}.footer-grid{grid-template-columns:2fr 1fr 1fr;gap:50px;display:grid}.footer-grid h2{text-transform:uppercase;letter-spacing:.12em;font-size:.8rem}.footer-grid li+li{margin-top:8px}.footer-grid a{text-underline-offset:4px;-webkit-text-decoration:underline #b6bdb6;text-decoration:underline #b6bdb6}.footer-brand{font-size:1.3rem}.copyright{width:min(1120px,100% - 32px);color:var(--muted);border-top:1px solid #cfd4cd;margin:50px auto 0;padding-top:18px;font-size:.78rem}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (max-width:850px){.hero-grid{grid-template-columns:1fr}.toolbox-mark{display:none}.card-grid{grid-template-columns:repeat(2,1fr)}.category-grid,.purpose-panel,.content-layout{grid-template-columns:1fr}.side-note{position:static}.result-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:600px){.shell{width:min(100% - 24px,1120px)}.header-inner{flex-direction:column;align-items:flex-start;gap:4px;padding-block:13px}.site-header nav{width:100%}.site-header ul{justify-content:space-between}.site-header nav a{padding:8px}.hero{padding-top:65px}.hero-actions>*{width:100%}.section-block{padding:50px 0}.section-heading{align-items:flex-start}.card-grid,.field-grid,.result-grid{grid-template-columns:1fr}.tool-card{min-height:210px}.purpose-panel{padding:30px 22px}.calculator-panel{border-radius:14px}.button-row button{flex:1}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}.toolbox-mark span{color:#9c581f}.purpose-panel .section-kicker{color:#a8d5b7}.field select{min-height:52px;color:var(--ink);background:#fff;border:1px solid #bfc7bf;border-radius:10px;padding:10px 13px}.check-field{align-items:center;gap:9px;margin-top:18px;font-weight:700;display:flex}.generator-output{border:1px solid var(--line);background:#fafbf8;border-radius:14px;justify-items:center;gap:18px;margin-top:26px;padding:24px;display:grid}.code-preview{text-align:center;width:100%;overflow:auto}.code-preview svg{max-width:100%;height:auto}.qr-preview{width:min(320px,100%);height:auto}.inline-action{margin-top:18px}.result-summary{background:#eef3e8;border-radius:10px;margin-top:18px;padding:15px}.mode-tabs{gap:8px;margin-bottom:20px;display:flex}.mode-tabs button{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:999px;padding:9px 15px;font-weight:800}.mode-tabs button.active{background:var(--green);color:#fff}.result-text{margin-top:24px}.result-text button{justify-self:start;margin-top:8px}@media (max-width:520px){.mode-tabs{flex-direction:column;align-items:stretch}.generator-output{padding:16px}}@media (prefers-reduced-motion:no-preference){.tool-card,.primary-button,.secondary-button{transition:transform .2s,box-shadow .2s,background .2s}}