@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;600;700&display=swap');
:root{--ink:#142b3e;--muted:#5d6f7a;--line:#d8e1e4;--paper:#f5f7f7;--white:#fff;--teal:#167a80;--teal-dark:#0b5961;--mist:#e7f2f1;--gold:#a66c36;--gold-bg:#f8f0e7;--shadow:0 12px 34px rgba(20,43,62,.11)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 'Noto Sans JP',system-ui,-apple-system,sans-serif}a{color:inherit;text-decoration:none}a:hover{color:var(--teal-dark)}button,input,textarea,select{font:inherit}button{cursor:pointer}input,textarea{color:var(--ink)}:focus-visible{outline:3px solid #72b9bc;outline-offset:2px}img{max-width:100%}[hidden]{display:none!important}
.shell{width:min(1180px,calc(100% - 40px));margin:auto}.site-header{background:var(--white);border-bottom:1px solid var(--line)}.header-inner{display:flex;justify-content:space-between;gap:24px;align-items:center;min-height:84px}.brand{display:flex;align-items:center;gap:13px;white-space:nowrap}.brand-mark{width:37px;height:37px;border:2px solid var(--teal);display:grid;place-items:center;color:var(--teal);font:700 20px Georgia,serif}.brand-name{font-size:21px;font-weight:700;letter-spacing:-.035em}.brand-kicker{display:block;font:500 10px/1.3 system-ui,sans-serif;letter-spacing:.14em;color:var(--muted)}.nav-main{display:flex;align-items:center;gap:4px}.nav-main a{display:inline-block;padding:10px 15px;border-radius:3px;font-size:14px;font-weight:600}.nav-main a[aria-current=page]{background:var(--mist);color:var(--teal-dark)}.header-actions{display:flex;gap:9px;align-items:center}.header-actions a{font-size:13px;color:var(--muted)}.header-actions .button{color:#fff}.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 17px;border:1px solid var(--teal);border-radius:3px;background:var(--teal);color:#fff;font-size:13px;font-weight:700;line-height:1.3}.button:hover{background:var(--teal-dark);color:#fff}.button.ghost{background:transparent;color:var(--teal);border-color:#9cc9c8}.button.ghost:hover{background:var(--mist)}.button.small{padding:7px 11px;font-size:12px}.mobile-menu{display:none}
.utility-bar{border-top:1px solid #edf0f1;background:#fbfcfc}.utility-inner{display:flex;justify-content:space-between;gap:15px;padding:7px 0;font-size:11px;color:var(--muted)}.utility-links{display:flex;gap:18px}
.eyebrow{font:700 11px/1.4 system-ui,sans-serif;letter-spacing:.13em;text-transform:uppercase;color:var(--teal)}.page-intro{padding:38px 0 24px;border-bottom:1px solid var(--line)}.page-intro h1{font-size:clamp(27px,3vw,39px);line-height:1.3;letter-spacing:-.045em;margin:6px 0 8px}.page-intro p{margin:0;color:var(--muted);max-width:780px;font-size:14px}.intro-line{display:flex;justify-content:space-between;gap:20px;align-items:end}.intro-stat{white-space:nowrap;text-align:right;font-size:12px;color:var(--muted)}.intro-stat strong{display:block;font:700 26px/1.1 system-ui,sans-serif;color:var(--ink)}
.lead-grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(250px,.8fr);gap:18px;margin:25px 0 32px}.lead-card,.side-note{border:1px solid var(--line);background:var(--white)}.lead-card{padding:25px 29px;border-top:3px solid var(--teal)}.lead-card h2{font-size:clamp(20px,2vw,27px);line-height:1.45;letter-spacing:-.03em;margin:8px 0}.lead-card p{font-size:13px;color:var(--muted);margin:9px 0 16px}.side-note{padding:23px}.side-note h2{font-size:15px;margin:8px 0}.side-note p{font-size:13px;color:var(--muted);margin:0 0 16px}.source-mini{display:flex;justify-content:space-between;gap:9px;padding:7px 0;border-top:1px solid var(--line);font-size:12px}.source-mini span:last-child{color:var(--muted)}
.section-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin:32px 0 14px;padding-bottom:9px;border-bottom:2px solid var(--ink)}.section-head h2{margin:0;font-size:17px;letter-spacing:-.02em}.section-head small{color:var(--muted);font-size:12px}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:38px}.news-list{background:var(--white);border:1px solid var(--line)}.news-card{padding:19px 21px;border-bottom:1px solid var(--line)}.news-card:last-child{border-bottom:0}.news-card h3{font-size:17px;line-height:1.55;letter-spacing:-.018em;margin:5px 0}.news-card p{margin:6px 0 10px;color:var(--muted);font-size:13px;line-height:1.75}.meta{display:flex;flex-wrap:wrap;gap:7px 15px;align-items:center;font-size:12px;color:var(--muted)}.meta strong{font-weight:700;color:var(--ink)}.card-top{display:flex;justify-content:space-between;gap:12px;align-items:start}.tag-row{display:flex;flex-wrap:wrap;gap:5px;margin-top:12px}.tag{display:inline-flex;align-items:center;padding:2px 7px;border:1px solid #cfdadd;border-radius:2px;color:#47606c;background:#f7faf9;font-size:11px;line-height:1.5}.tag:hover{background:var(--mist);border-color:#99c9c8;color:var(--teal-dark)}.tag.company{background:var(--mist);border-color:#c5dcda;color:var(--teal-dark)}.tag.product{background:var(--gold-bg);border-color:#e9d5be;color:#81562d}.tag.plain{cursor:default}.tag-label{font-size:10px;color:var(--muted);margin-right:3px}.reader-sidebar{padding-top:1px}.side-panel{border-top:2px solid var(--teal);background:var(--white);border-left:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:19px;margin-bottom:17px}.side-panel h3{font-size:15px;margin:0 0 8px}.side-panel p{color:var(--muted);font-size:13px;margin:0 0 12px}.side-panel .button{width:100%}.side-panel .inline-link{font-size:12px;color:var(--teal)}
.filter-section{position:relative;margin:22px 0 17px}.filter-tools{display:flex;justify-content:space-between;gap:14px;align-items:center;flex-wrap:wrap}.filter-bar{display:flex;flex-wrap:wrap;gap:7px}.filter-slot{position:relative}.filter-trigger{min-width:120px;text-align:left;display:flex;justify-content:space-between;gap:12px;align-items:center;border:1px solid var(--line);background:var(--white);padding:9px 12px;border-radius:3px;color:var(--ink);font-size:13px;font-weight:600}.filter-trigger:hover,.filter-trigger[aria-expanded=true]{border-color:var(--teal)}.filter-trigger .badge{min-width:17px;text-align:center;background:var(--mist);color:var(--teal-dark);border-radius:10px;font-size:10px;padding:1px 4px}.filter-panel{position:absolute;top:calc(100% + 5px);left:0;width:min(350px,calc(100vw - 40px));max-height:390px;overflow:auto;z-index:20;background:var(--white);border:1px solid #aebfc3;box-shadow:var(--shadow);padding:12px}.filter-panel h3{margin:0 0 9px;font-size:13px}.tree-row{display:flex;align-items:center;gap:3px;min-height:34px}.tree-row label{display:flex;gap:7px;align-items:center;flex:1;font-size:12px;cursor:pointer}.tree-row input{accent-color:var(--teal);width:15px;height:15px}.tree-toggle{width:24px;height:24px;border:0;background:transparent;color:var(--muted)}.tree-toggle:hover{background:var(--mist)}.tree-children{margin-left:19px;padding-left:8px;border-left:1px solid var(--line)}.tree-indent{width:24px}.filter-panel-actions{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:8px;padding-top:9px}.link-button{border:0;background:none;color:var(--teal);font-size:12px;padding:3px}.link-button:hover{text-decoration:underline}.search-field{display:flex;gap:0;align-items:center;min-width:220px;max-width:350px;flex:1}.search-field input{width:100%;border:1px solid var(--line);background:var(--white);padding:9px 11px;border-radius:3px;font-size:13px}.active-filters{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}.active-filter{border:1px solid #a4c9c7;background:var(--mist);color:var(--teal-dark);font-size:11px;padding:3px 8px;border-radius:2px}.clear-all{border:0;background:transparent;color:var(--muted);font-size:11px}.result-line{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12px;color:var(--muted);margin:12px 0}.result-line strong{color:var(--ink)}.empty-state{background:var(--white);border:1px solid var(--line);padding:40px 20px;text-align:center;color:var(--muted);font-size:14px}
.db-tabs{display:flex;gap:18px;border-bottom:1px solid var(--line);margin:22px 0 0}.db-tabs a{display:inline-block;padding:0 2px 10px;font-size:14px;color:var(--muted)}.db-tabs a[aria-current=page]{color:var(--teal-dark);border-bottom:3px solid var(--teal);font-weight:700}.db-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.db-card{background:var(--white);border:1px solid var(--line);padding:18px 18px 16px;min-height:180px}.db-card:hover{border-color:#a1c4c3}.db-card h3{font-size:16px;margin:4px 0 5px}.db-card p{font-size:12px;color:var(--muted);margin:5px 0 0;line-height:1.7}.db-card .tag-row{margin-top:11px}.db-card .meta{margin-top:8px}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:56px;padding:28px 0 65px}.breadcrumbs{font-size:12px;color:var(--muted);margin-bottom:20px}.breadcrumbs a{color:var(--teal)}.article-head{border-bottom:1px solid var(--line);padding-bottom:20px}.article-head h1{font-size:clamp(24px,3vw,33px);letter-spacing:-.04em;line-height:1.48;margin:8px 0 14px}.article-head .tag-row{margin-top:15px}.article-body{padding-top:9px}.article-body section{padding:22px 0;border-bottom:1px solid var(--line)}.article-body h2{font-size:17px;margin:0 0 10px}.article-body p,.article-body li{font-size:15px;line-height:1.9;margin:0 0 8px}.article-body ul{padding-left:20px;margin:0}.article-body .inference{border-left:3px solid var(--gold);background:var(--gold-bg);padding:16px 18px;margin-top:20px}.source-list{padding-left:0!important;list-style:none}.source-list li{font-size:13px;border-bottom:1px solid var(--line);padding:6px 0;word-break:break-word}.source-list a{color:var(--teal);text-decoration:underline}.article-actions{display:flex;gap:7px;flex-wrap:wrap;margin:19px 0}.article-actions button,.article-actions a{padding:7px 10px;border:1px solid var(--line);background:var(--white);border-radius:3px;font-size:12px;color:var(--ink)}.article-actions button:hover,.article-actions a:hover{border-color:var(--teal);color:var(--teal)}.article-actions .saved{background:var(--mist);border-color:var(--teal);color:var(--teal-dark)}.profile-facts{display:grid;grid-template-columns:150px 1fr;border-top:1px solid var(--line);margin-top:17px}.profile-facts dt,.profile-facts dd{margin:0;padding:10px 0;border-bottom:1px solid var(--line);font-size:13px}.profile-facts dt{color:var(--muted)}.related-list{display:grid;gap:10px}.related-list a{display:block;background:#fff;border:1px solid var(--line);padding:11px 13px;font-size:13px}
.form-page{max-width:640px;margin:30px auto 70px;background:var(--white);border:1px solid var(--line);padding:32px}.form-page h1{font-size:26px;margin:3px 0 10px}.form-page p{font-size:14px;color:var(--muted)}.field{display:block;margin:17px 0}.field span{display:block;font-size:12px;font-weight:700;margin-bottom:5px}.field input,.field textarea,.field select{width:100%;border:1px solid #b6c5ca;border-radius:3px;padding:10px 12px;background:#fff;font-size:14px}.field textarea{min-height:130px;resize:vertical}.field input[type=checkbox]{width:auto}.checkbox-line{display:flex;align-items:center;gap:8px;font-size:13px;margin:12px 0}.notice{border-left:3px solid var(--teal);background:var(--mist);padding:10px 13px;margin:14px 0;color:var(--teal-dark);font-size:13px}.notice.error{background:#fff0ec;border-color:#a94d3b;color:#913d2b}.account-tabs{display:flex;gap:7px;margin-top:23px}.account-tabs button{padding:8px 13px;border:1px solid var(--line);background:#fff;font-size:13px}.account-tabs button.active{border-color:var(--teal);color:var(--teal);background:var(--mist)}.form-status{font-size:13px;min-height:22px;margin-top:12px}.form-status.error{color:#a33e30}.form-status.success{color:var(--teal-dark)}
.site-footer{margin-top:60px;border-top:1px solid #bbcbd0;background:#eaf0f1}.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;padding:34px 0}.footer-inner h2{font-size:14px;margin:0 0 8px}.footer-inner p,.footer-inner a{font-size:12px;color:var(--muted)}.footer-inner a{display:block;margin:4px 0}.footer-bottom{border-top:1px solid #cad7da;padding:10px 0;font-size:11px;color:var(--muted)}
@media(max-width:1050px){.header-inner{flex-wrap:wrap;padding:15px 0}.header-actions{margin-left:auto}.content-grid,.article-layout{grid-template-columns:minmax(0,1fr) 235px;gap:24px}.db-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:720px){.shell{width:min(100% - 28px,1180px)}.header-inner{min-height:auto;gap:10px}.brand-name{font-size:18px}.brand-kicker{font-size:9px}.brand-mark{width:33px;height:33px}.nav-main{order:3;width:100%;border-top:1px solid var(--line);padding-top:6px}.nav-main a{padding:7px 11px;font-size:12px}.header-actions{gap:6px}.header-actions .button{padding:7px 9px}.utility-inner{font-size:10px}.utility-links{gap:10px}.page-intro{padding:27px 0 20px}.intro-stat{display:none}.lead-grid,.content-grid,.article-layout{grid-template-columns:1fr}.lead-grid{gap:10px;margin:16px 0}.lead-card,.side-note{padding:18px}.reader-sidebar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.side-panel{margin:0}.filter-tools{align-items:stretch}.filter-bar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));width:100%}.filter-trigger{width:100%;min-width:0}.filter-panel{left:0}.filter-slot:nth-child(even) .filter-panel{left:auto;right:0}.search-field{max-width:none}.db-grid{grid-template-columns:1fr}.article-layout{padding-top:20px}.article-sidebar{order:2}.form-page{margin:16px auto 45px;padding:21px}.footer-inner{grid-template-columns:1fr 1fr;gap:18px}.footer-inner>div:first-child{grid-column:1/-1}}
@media(max-width:420px){.header-actions a:not(.button){display:none}.reader-sidebar{grid-template-columns:1fr}.utility-links a:last-child{display:none}.article-actions{gap:5px}.article-actions button,.article-actions a{font-size:11px;padding:7px}}

/* Editorial refresh: quiet canvas, spacious cards, and a distinct evergreen accent. */
:root{--ink:#202b2a;--muted:#64716d;--line:#e5e7e2;--paper:#f6f6f2;--white:#fff;--teal:#286e62;--teal-dark:#19584e;--mist:#e9f2ee;--gold:#aa704e;--gold-bg:#f7efe8;--shadow:0 20px 48px rgba(20,43,37,.09)}
.site-header{background:var(--paper);border-bottom:0}.header-inner{min-height:104px}.brand-mark{border-radius:10px;background:var(--ink);border-color:var(--ink);color:#fff}.brand-name{letter-spacing:-.05em}.nav-main{gap:2px;padding:5px;background:#fff;border:1px solid var(--line);border-radius:999px;box-shadow:0 8px 24px rgba(20,43,37,.04)}.nav-main a{border-radius:999px;padding:9px 16px}.nav-main a[aria-current=page]{background:var(--ink);color:#fff}.utility-bar{background:transparent;border-top:0}.utility-inner{padding:0 0 12px}.button,.button.ghost{border-radius:10px}.button{background:var(--ink);border-color:var(--ink)}.button:hover{background:var(--teal);border-color:var(--teal)}
.page-intro{border-bottom:0;padding:46px 0 24px}.page-intro h1{font-size:clamp(31px,3.7vw,47px);line-height:1.28}.page-intro p{font-size:15px}.intro-stat strong{font-size:32px}.lead-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:20px 0 45px}.lead-card,.side-note{border:1px solid var(--line);border-radius:22px;box-shadow:0 12px 30px rgba(20,43,37,.035)}.lead-card{padding:30px 32px;border-top:1px solid var(--line);min-height:265px;display:flex;flex-direction:column}.lead-card .meta{margin-top:14px}.lead-card h2{font-size:clamp(21px,2vw,28px);line-height:1.4}.lead-card p{font-size:14px}.lead-card .inline-link{margin-top:auto;color:var(--teal);font-weight:700;font-size:13px}.lead-main{background:#f9fcf9;border-color:#d5e3db}.section-head{border-bottom:0;margin-top:38px}.section-head h2{font-size:23px}.topic-nav{display:flex;gap:5px;align-items:center;flex-wrap:wrap;padding:8px;background:#fff;border:1px solid var(--line);border-radius:18px}.topic-nav a{padding:8px 13px;border-radius:11px;font-size:12px;font-weight:700;color:var(--muted)}.topic-nav a:hover,.topic-nav a[aria-current=page]{background:var(--teal);color:#fff}
.filter-section{margin:18px 0 22px}.filter-trigger,.search-field input{border-radius:11px;padding:10px 13px}.filter-trigger{min-width:124px}.filter-panel{border-radius:14px}.active-filter{border-radius:999px}.news-list{border:0;background:transparent}.news-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:23px 25px;margin-bottom:12px}.news-card:last-child{border-bottom:1px solid var(--line)}.news-card:hover,.db-card:hover{box-shadow:0 14px 28px rgba(20,43,37,.06);transform:translateY(-1px)}.news-card h3{font-size:19px}.news-card p{font-size:14px}.tag{border-radius:999px;padding:3px 9px}.side-panel{border:1px solid var(--line);border-radius:18px;padding:22px}.side-panel:first-child{border-top:3px solid var(--teal)}
.db-tabs{gap:10px;border:0}.db-tabs a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 18px}.db-tabs a[aria-current=page]{background:var(--ink);color:#fff;border:1px solid var(--ink)}.db-grid{gap:16px}.db-card{border-radius:20px;min-height:220px;padding:24px;transition:transform .16s,box-shadow .16s}.db-card h3{font-size:19px;margin-top:13px}.db-card .tag-row{margin-top:18px}.article-layout{grid-template-columns:minmax(0,760px) 260px;gap:28px;padding-top:30px}.article-layout>article{background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px 39px}.article-head h1{font-size:clamp(27px,3vw,38px)}.article-body section{padding:27px 0}.article-body h2{font-size:20px}.fact-block{padding:18px 0 18px 22px;border-left:3px solid var(--teal);margin:18px 0}.fact-block h3{font-size:17px;margin:0 0 10px}.fact-block p{font-size:15px;line-height:2}.fact-block a{font-size:12px;color:var(--teal);text-decoration:underline}.legacy-note{background:#f5f7f4;padding:13px 16px;color:var(--muted);font-size:12px!important;border-radius:9px}.article-actions button,.article-actions a{border-radius:9px}.related-list a{border-radius:10px}.form-page{border-radius:23px;padding:38px}.field input,.field textarea,.field select{border-radius:10px}.placeholder-panel{background:#fff;border:1px solid var(--line);border-radius:24px;padding:44px;max-width:780px;margin:22px 0 80px}.placeholder-panel h2{font-size:24px}.placeholder-panel p{color:var(--muted);max-width:60ch}.method-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;margin:24px 0}.method-grid section{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}.method-grid h2{font-size:18px;margin:0 0 8px}.method-grid p{font-size:14px;color:var(--muted);margin:0}.method-contact{margin:28px 0 70px;font-size:14px}.method-contact a{color:var(--teal);text-decoration:underline}.site-footer{background:#edf1ec;border-top:1px solid #e0e7dd}
@media(max-width:1050px){.nav-main a{padding:8px 11px;font-size:12px}.header-inner{gap:13px}.header-actions .button{display:none}}
@media(max-width:720px){.header-inner{min-height:auto}.nav-main{width:100%;border-radius:16px;overflow-x:auto;flex-wrap:nowrap}.nav-main a{white-space:nowrap}.lead-grid,.method-grid{grid-template-columns:1fr}.lead-card{min-height:0}.article-layout>article{padding:23px;border-radius:18px}.topic-nav{flex-wrap:nowrap;overflow-x:auto}.topic-nav a{white-space:nowrap}.placeholder-panel{padding:27px}.page-intro{padding-top:26px}}
.stage-pill{display:inline-flex;padding:2px 8px;border-radius:999px;background:var(--gold-bg);color:#8a5a3c;font-size:11px;font-weight:700}