@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+JP:wght@400;500;700&family=Quicksand:wght@700&family=Zen+Maru+Gothic:wght@500;700&display=swap";:root{--color-primary:#2a746e;--color-primary-hover:#1f6660;--color-secondary:#eef8f6;--color-text:#3f3a36;--color-text-light:#6e655e;--color-bg:#fff;--color-card-bg:#fff;--color-result-bg:#f6faf9;--color-result-highlight:#e2f3f0;--color-border:#e8e2d9;--color-input-border:#d9d1c6;--color-tint:#eef8f6;--color-tint-soft:#f7fbfa;--color-tint-strong:#e2f3f0;--color-tint-border:#d3ebe7;--color-rule:#9fd6cf;--color-accent:#f0a3b3;--color-accent-tint:#fbedf0;--color-accent-text:#b04a62;--color-success:#10b981;--color-danger:#b3261e;--font-body:"Inter", "Noto Sans JP", sans-serif;--font-heading:"Zen Maru Gothic", "Noto Sans JP", sans-serif;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d;--glass-shadow:0 8px 32px 0 #1f268712;--glass-border:1px solid #ffffff2e;--radius-sm:4px;--radius-md:12px;--radius-lg:20px;--radius-full:9999px;--transition-fast:.15s ease-in-out;--transition-normal:.3s ease-in-out}body{font-family:var(--font-body);color:var(--color-text);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0}h1,h2,h3,h4,h5,p{margin:0;line-height:1.5}h1,h2{font-family:var(--font-heading)}a{color:var(--color-primary)}.app-container{box-sizing:border-box;flex-direction:column;align-items:center;padding:0 0 24px;display:flex}.max-w-md{width:100%;max-width:600px}.card{background:var(--color-card-bg);border-radius:var(--radius-lg);box-sizing:border-box;width:100%;margin-bottom:24px;padding:32px}.glass-panel{-webkit-backdrop-filter:blur(10px);border-radius:var(--radius-lg);border:var(--glass-border);box-shadow:var(--glass-shadow);box-sizing:border-box;background:#ffffffb3;width:100%;margin-bottom:24px;padding:24px}.text-center{text-align:center}.text-primary{color:var(--color-primary)}.text-success{color:var(--color-success)}.text-danger{color:var(--color-danger)}.text-sm{font-size:.875rem}.text-lg{font-size:1.125rem}.font-bold{font-weight:700}.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}.form-group{margin-bottom:20px}.form-label{color:var(--color-text-light);margin-bottom:8px;font-size:.9rem;font-weight:500;display:block}.form-input{width:100%;font-size:1rem;font-family:var(--font-body);color:var(--color-text);background-color:var(--color-card-bg);border:1px solid var(--color-input-border);border-radius:var(--radius-md);box-sizing:border-box;transition:border-color var(--transition-fast), box-shadow var(--transition-fast);padding:12px 16px}.form-input:focus{border-color:var(--color-primary);background-color:var(--color-card-bg);outline:none;box-shadow:0 0 0 3px #2a746e33}a:focus-visible,button:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.btn{font-family:var(--font-heading);text-align:center;white-space:nowrap;vertical-align:middle;-webkit-user-select:none;user-select:none;border-radius:var(--radius-md);transition:all var(--transition-fast);cursor:pointer;box-sizing:border-box;border:1px solid #0000;padding:12px 24px;font-size:1rem;font-weight:700;line-height:1.5;display:inline-block}.btn:disabled{opacity:.6;cursor:not-allowed;box-shadow:none!important;transform:none!important}.btn-primary{color:#fff;background-color:var(--color-primary)}.btn-primary:not(:disabled):hover{background-color:var(--color-primary-hover)}.btn-primary:not(:disabled):active{transform:translateY(0)}.btn-danger{color:#fff;background-color:var(--color-danger)}.btn-danger:not(:disabled):hover{background-color:#8c1d18}.btn-outline{color:var(--color-text);background-color:var(--color-card-bg);border-color:var(--color-input-border)}.btn-outline:not(:disabled):hover{background-color:var(--color-tint);border-color:var(--color-primary)}.choice-btn{min-height:44px;font-family:var(--font-body);color:var(--color-primary);background-color:var(--color-tint);border:1px solid var(--color-tint-border);border-radius:var(--radius-md);cursor:pointer;box-sizing:border-box;transition:background-color var(--transition-fast), border-color var(--transition-fast);font-size:.9rem;font-weight:500}.choice-btn:hover{border-color:var(--color-primary)}.choice-btn[aria-pressed=true]{color:#fff;background-color:var(--color-primary);border-color:var(--color-primary);font-weight:700}.btn-block{width:100%;display:block}.result-box{background-color:var(--color-result-bg);border-radius:var(--radius-md);border:1px solid var(--color-border);transition:transform var(--transition-normal);margin-bottom:16px;padding:16px}.result-box:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px)}.result-highlight{background-color:var(--color-result-highlight);border-left:4px solid var(--color-primary);border-radius:var(--radius-md)}.nav-section{background:var(--color-card-bg);border-radius:var(--radius-lg);border:1px solid var(--color-border);margin-bottom:24px;padding:24px}.nav-section-title{color:var(--color-text);border-bottom:2px solid var(--color-rule);margin-bottom:14px;padding-bottom:8px;font-size:1.125rem;font-weight:700}.nav-subsection-title{color:var(--color-text-light);margin:24px 0 10px;font-size:.95rem;font-weight:700}.nav-section-title+.nav-subsection-title{margin-top:0}.nav-section-title-with-icon{align-items:center;gap:10px;display:flex}.nav-section-icon{background:var(--color-tint);width:34px;height:34px;color:var(--color-primary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.nav-section-icon-accent{background:var(--color-accent-tint);color:var(--color-accent-text)}.site-header{background:var(--color-tint)}.site-header-inner{box-sizing:border-box;justify-content:space-between;align-items:center;max-width:1232px;margin:0 auto;padding:10px 16px;display:flex}.site-header-logo{align-items:center;gap:8px;text-decoration:none;display:flex}.site-header-logo svg{width:32px;height:32px}.site-header .site-header-name{letter-spacing:-.3px;font-size:22px}.site-header-link{min-height:44px;color:var(--color-primary);align-items:center;gap:4px;font-size:.8125rem;font-weight:500;text-decoration:none;display:inline-flex}.page-title{text-align:center;word-break:auto-phrase;text-wrap:balance;font-weight:700}.title-heart{vertical-align:-1px;margin-right:8px;display:inline-block}.page-lead{color:var(--color-text-light);border-bottom:2px solid var(--color-rule);border-image:linear-gradient(to right, var(--color-rule) 0 72%, var(--color-accent) 72% 100%) 1;padding-bottom:14px}.guide-heading,.static-page h2{border-bottom:2px solid var(--color-rule);border-image:linear-gradient(to right, var(--color-rule) 0 72%, var(--color-accent) 72% 100%) 1;align-items:center;gap:8px;padding-bottom:8px;font-weight:700;display:flex}.guide-heading:before,.static-page h2:before{content:"";background:var(--color-accent);border-radius:50%;flex-shrink:0;width:8px;height:8px}.static-page h2{margin-top:28px;font-size:1.125rem}.home{box-sizing:border-box;width:100%;max-width:632px;margin:0 auto;padding:20px 16px 8px}.home-header{background:var(--color-tint);border-radius:24px;margin-bottom:24px;padding:28px 22px 24px;position:relative;overflow:hidden}.home-header>:not(.home-hero-decor){position:relative}.home-hero-decor{pointer-events:none;position:absolute}.home-hero-decor-compact{top:10px;right:10px}.home-hero-decor-wide{display:none;top:50%;right:36px;transform:translateY(-50%)}.site-logo{align-items:center;gap:10px;margin:0;display:flex}.site-logo svg{width:48px;height:48px}.site-logo-text{flex-direction:column;gap:2px;display:flex}.site-logo-name{font-family:"Quicksand", var(--font-body);letter-spacing:-.5px;color:var(--color-text);font-size:30px;font-weight:700;line-height:1}.site-logo-calc{color:var(--color-primary)}.site-logo-kana{font-family:var(--font-heading);letter-spacing:3px;color:var(--color-text-light);font-size:11px;font-weight:500;line-height:1.4}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.home-intro{font-family:var(--font-heading);letter-spacing:.04em;color:var(--color-text);margin-top:14px;font-size:.9375rem;font-weight:500;line-height:1.6}.home-catalog{flex-direction:column;display:flex}.home-column{display:contents}.home .nav-subsection-title{margin:0 0 8px}.calc-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.calc-link{background-color:var(--color-tint);min-height:48px;color:var(--color-text);border-radius:var(--radius-md);box-sizing:border-box;transition:background-color var(--transition-fast), border-color var(--transition-fast);border:1px solid #0000;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;text-decoration:none;display:flex}.calc-link:hover{background-color:var(--color-tint-strong);border-color:var(--color-primary)}.calc-link-name{font-size:.9375rem;font-weight:500;line-height:1.45;display:block}.calc-link-sub{color:var(--color-text-light);margin-top:2px;font-size:.78rem;line-height:1.4;display:block}.calc-link-arrow{color:var(--color-primary);flex-shrink:0}.update-history{position:relative}.update-history-list{max-height:320px;margin:0;padding:0 0 32px 20px;overflow-y:auto}.update-history-list:focus-visible{outline:2px solid var(--color-primary);outline-offset:4px;border-radius:4px}.update-history:after{content:"";background:linear-gradient(to bottom, #fff0, var(--color-card-bg));pointer-events:none;height:40px;position:absolute;bottom:0;left:0;right:0}.update-history-note{border-top:1px solid var(--color-border);color:var(--color-text-light);margin:0;padding-top:12px}.home .nav-section-title{border-image:linear-gradient(to right, var(--color-rule) 0 72%, var(--color-accent) 72% 100%) 1}.home .nav-subsection-title:before{content:"";background:var(--color-accent);vertical-align:middle;border-radius:50%;width:6px;height:6px;margin-right:6px;display:inline-block}.home .nav-section{background:0 0;border:none;border-radius:0;margin-bottom:40px;padding:0}@media (width>=1024px){.home{max-width:1232px;padding-top:48px}.home-header{box-sizing:border-box;border-radius:28px;flex-direction:column;justify-content:center;min-height:240px;margin-bottom:32px;padding:44px 48px;display:flex}.home-hero-decor-compact{display:none}.home-hero-decor-wide{display:block}.site-logo{gap:16px}.site-logo svg{width:76px;height:76px}.site-logo-name{font-size:48px}.site-logo-kana{letter-spacing:4px;font-size:14px}.home-intro{max-width:560px;margin-top:18px;font-size:1.125rem}.home-catalog{grid-template-columns:repeat(3,minmax(0,1fr));align-items:start;gap:48px;margin-bottom:48px;display:grid}.home-column{flex-direction:column;gap:48px;display:flex}.home-column>.nav-section{margin-bottom:0}.home-about{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:48px;display:grid}.home-about>.nav-section:last-child{grid-column:1/-1}}.calculator{width:100%;max-width:500px;margin:0 auto}.calc-result{margin-top:16px}@media (width>=1024px){.calculator:not(.static-page){max-width:640px}.calculator.calculator-wide{max-width:1160px}.calculator:not(.static-page) .page-title{text-align:left}.calc-columns{grid-template-columns:400px minmax(0,1fr);align-items:start;gap:48px;display:grid}.calc-input{border-radius:var(--radius-lg);background:var(--color-tint-soft);padding:24px}.calc-columns-wide-input{grid-template-columns:480px minmax(0,1fr)}.calc-columns-sticky .calc-input{position:sticky;top:24px}.calc-result,.calc-result>:first-child{margin-top:0}.calculator-wide .calculator-guide{margin-top:64px!important;padding-top:32px!important}.calculator .guide-related{flex-wrap:wrap;gap:10px;list-style:none;display:flex;padding-left:0!important}.calculator .guide-related li{margin-bottom:0!important}.calculator .guide-related a{border-radius:var(--radius-md);background:var(--color-tint);align-items:center;min-height:44px;padding:0 16px;text-decoration:none;display:inline-flex}}@media (width>=1024px) and (width<=1279px){.calc-columns{gap:32px}.calc-columns-wide-input{grid-template-columns:460px minmax(0,1fr)}.calc-input{padding:16px}}.d-flex{display:flex}.align-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-2{gap:8px}.gap-4{gap:16px}.flex-grow-1{flex-grow:1}.flex-column{flex-direction:column}.flex-wrap{flex-wrap:wrap}.result-main{background:var(--color-result-highlight);border-left:4px solid var(--color-primary);border-radius:var(--radius-md);padding:16px 20px}.result-main-label,.result-main-note{color:var(--color-text-light);font-size:13px}.result-main-value{color:var(--color-primary-hover);overflow-wrap:anywhere;font-size:32px;font-weight:700;line-height:1.3}.result-main-unit{margin-left:2px;font-size:16px}.result-tiles{grid-template-columns:repeat(auto-fit,minmax(96px,1fr));gap:8px;margin:10px 0 0;display:grid}.result-tile{border:1px solid var(--color-border);border-radius:var(--radius-md);min-width:0;padding:8px 12px}.result-tile dt,.result-tile-note{color:var(--color-text-light);font-size:12px}@media (width<=600px){.result-tile{padding:8px 10px}.result-tile dd{font-size:14px}.result-tiles:has(>.result-tile:nth-child(4):last-child){grid-template-columns:repeat(2,minmax(0,1fr))}}.result-tile-note,.result-main-note{word-break:keep-all;overflow-wrap:anywhere}.result-tile dd{overflow-wrap:anywhere;margin:0;font-weight:700}.compare-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.compare-row{border-radius:var(--radius-md);background:var(--color-result-bg);border:1px solid var(--color-border);align-items:center;gap:12px;padding:12px 16px;display:flex;position:relative}.compare-row-best{background:var(--color-tint-strong);border:2px solid var(--color-primary)}.compare-row-body{flex:1;min-width:0}.compare-row-title{font-weight:700}.compare-row-detail{color:var(--color-text-light);font-size:13px}.compare-row-value{text-align:right;white-space:nowrap}.compare-row-value-label{color:var(--color-text-light);font-size:12px}.compare-row-badge{color:var(--color-primary);font-size:13px;font-weight:700}.compare-row-number{font-size:20px;font-weight:700}.compare-row-best .compare-row-number{color:var(--color-primary-hover)}.compare-row-unit{color:var(--color-text-light);font-size:13px}@media (width<=600px){.compare-row{flex-wrap:wrap;row-gap:4px}.compare-row-body{flex-basis:100%}.compare-row-value{text-align:left}}.reset-results{justify-content:flex-end;margin-top:12px;display:flex}.reset-results-btn{min-height:44px;color:var(--color-text-light);padding:0 18px;font-size:14px}li:has(>.result-delete-btn){padding-right:44px!important}.result-delete-btn{cursor:pointer;width:44px;height:44px;color:var(--color-text-light);background:0 0;border:none;justify-content:center;align-items:center;font-size:18px;display:inline-flex;position:absolute;top:0;right:0}@media (width<=600px){.card,.glass-panel{padding:20px 16px}.ideco-grid-2,.ideco-grid-3{grid-template-columns:minmax(0,1fr)!important}.ideco-grid-4{grid-template-columns:repeat(2,minmax(0,1fr))!important}}body{background-color:var(--color-bg)}