:root{--column-ink:#172b46;--column-blue:#2159b5;--column-muted:#566579;--column-line:#d9e2ed}
body{background:#f5f8fc;color:var(--column-ink);margin:0;font-family:system-ui,-apple-system,"Noto Sans JP",sans-serif;line-height:1.8}
.column-header{max-width:1160px;margin:auto;padding:22px 28px;display:flex;justify-content:space-between;align-items:center;gap:20px;border-bottom:1px solid var(--column-line)}
.column-brand{font-size:26px;font-weight:800;text-decoration:none;color:var(--column-blue)}
.column-header nav{display:flex;align-items:center;gap:22px}.column-header a{color:var(--column-blue)}
.column-main{max-width:1100px;padding:48px 28px 80px;margin:auto}.column-main>article{max-width:800px;margin:auto;background:white;padding:40px;border:1px solid var(--column-line);border-radius:18px}
.column-kicker{color:var(--column-blue);font-weight:700;font-size:14px;letter-spacing:.08em}.column-main h1{font-size:clamp(26px,4vw,40px);line-height:1.45;margin:14px 0 22px;overflow-wrap:anywhere}.column-summary{font-size:18px;color:var(--column-muted)}
.column-meta{font-size:13px;color:var(--column-muted)}.column-prose{margin:40px 0;overflow-wrap:anywhere}.column-prose h2{margin-top:38px;padding-bottom:12px;border-bottom:2px solid #e4edf9}.column-prose h3{margin-top:28px}.column-prose a,.column-main a{color:var(--column-blue)}
.column-prose pre{overflow:auto;background:#edf2f8;padding:16px;border-radius:8px}.column-prose blockquote{border-left:4px solid #8daed9;margin-left:0;padding-left:20px;color:var(--column-muted)}
.column-prose .column-illustration{display:block;max-width:100%;height:auto;border-radius:5px}.column-prose .column-figure{margin:28px 0 34px}.column-prose .column-figure img{width:100%}.column-prose .column-figure figcaption{margin-top:10px;color:var(--column-muted);font-size:12px;line-height:1.85;text-align:center;overflow-wrap:anywhere}
.column-article-cover{width:100%;max-width:1040px;margin:0 auto 44px}.column-article-cover img{display:block;width:100%;height:auto;border-radius:8px}.column-article-cover figcaption{margin-top:12px;color:var(--column-muted);font-size:12px;line-height:1.85;text-align:center;overflow-wrap:anywhere}@media(max-width:700px){.column-article-cover{margin:0 0 28px}.column-article-cover img{border-radius:5px}.column-article-cover figcaption{font-size:11px;margin-top:9px}}
.column-prose table{display:block;overflow-x:auto;max-width:100%}.column-main table{width:100%;border-collapse:collapse;background:white;font-size:14px}.column-main th,.column-main td{padding:12px;border:1px solid var(--column-line);text-align:left;vertical-align:top}.column-main th{background:#edf3fb;white-space:nowrap}
.column-button,.column-main button{border:1px solid #bccce1;background:white;color:var(--column-ink);font:inherit;border-radius:8px;padding:10px 16px;cursor:pointer;text-decoration:none;display:inline-block}
.column-main .column-button,.column-header .column-button{background:var(--column-blue);border-color:var(--column-blue);color:white}.column-main button:disabled{opacity:.5;cursor:not-allowed}.column-main button:focus-visible,.column-main a:focus-visible{outline:3px solid #eeae38;outline-offset:3px}
.column-cta{background:#eaf2ff;padding:26px;margin-top:40px;border-radius:12px}.column-cta h2{font-size:21px;margin-top:0}.column-footer{text-align:center;padding:24px;border-top:1px solid var(--column-line);font-size:14px}
.column-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.column-card{background:white;padding:26px;border:1px solid var(--column-line);border-radius:12px}.column-card h2{font-size:22px}.column-card time{font-size:13px;color:var(--column-muted)}
.column-notice{padding:18px 22px;background:#eaf1fb;border-left:4px solid var(--column-blue);border-radius:4px;font-size:14px;margin:22px 0}.column-table-wrap{overflow:auto}.operator-top{display:flex;justify-content:space-between;align-items:center;gap:20px}.operator-filters{display:flex;gap:18px;margin:24px 0;flex-wrap:wrap}
.column-main label{display:grid;gap:5px;font-size:14px}.column-main input,.column-main textarea,.column-main select{box-sizing:border-box;max-width:100%;width:100%;padding:10px;border:1px solid #b4c4d8;background:white;border-radius:6px;color:var(--column-ink);font:inherit}.column-main textarea{resize:vertical}.column-main input[type=checkbox]{width:auto}
.operator-form{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}.operator-form .full{grid-column:1/-1}.operator-actions{display:flex;flex-wrap:wrap;gap:10px}.source-row{display:grid;grid-template-columns:1fr 2fr 1fr auto;gap:10px;margin-bottom:14px;align-items:end}.operator-form fieldset{min-width:0;border:1px solid var(--column-line);border-radius:8px}#relatedChoices label{display:flex;align-items:center;margin:6px 0}#operatorMessage{color:#8a340c;font-weight:600;min-height:28px}[hidden]{display:none!important}
@media(max-width:640px){.column-header{padding:16px;align-items:flex-start}.column-header nav{gap:10px;flex-wrap:wrap;font-size:13px;justify-content:flex-end}.column-header .column-button{padding:6px 10px}.column-main{padding:24px 16px 48px}.column-main>article{padding:22px 18px}.column-grid,.operator-form,.source-row{grid-template-columns:1fr}.operator-form .full{grid-column:auto}.column-main th,.column-main td{padding:8px}.operator-top{align-items:flex-start}.column-cta{padding:20px}.operator-filters label{width:100%}}

/* Public editorial layout; operator tables and forms retain their own layout. */
.column-brand img{display:block;width:160px;height:auto}
.column-footer{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px 24px}
.column-footer small{flex-basis:100%;color:var(--column-muted)}
.column-public{background:#fcfcf9;color:#173247;font-size:17px;--column-blue:#1655a5;--column-muted:#526570;--column-line:#dde4e7}
.column-public .column-header{max-width:1160px;min-height:90px;padding:22px 40px;background:#fcfcf9;border-bottom:1px solid #dfe6e9}
.column-public .column-header nav{gap:30px;font-size:16px;font-weight:600}
.column-public .column-header nav>a:not(.column-button){color:#334c5e}
.column-public .column-button{border-radius:5px;padding:13px 23px;font-size:16px;font-weight:700;line-height:1.5}
.column-public .column-main{max-width:1160px;padding:26px 40px 72px}
.column-public .column-breadcrumb{display:flex;flex-wrap:wrap;gap:10px;font-size:14px;color:var(--column-muted);margin-bottom:30px;overflow-wrap:anywhere}
.column-public .column-breadcrumb a{color:#4d6677}
.column-public .column-kicker{font-size:14px;letter-spacing:.06em}
.column-public .column-masthead{padding:28px 36px;background:#ecf3f5;border-radius:6px}
.column-public .column-masthead .column-kicker{color:#285773;font-size:15px}
.column-public .column-masthead .column-kicker span{font-size:13px;margin-left:10px;font-weight:500;letter-spacing:.1em}
.column-public .column-masthead h1{font-size:clamp(30px,3.6vw,38px);line-height:1.5;letter-spacing:.025em;font-weight:750;margin:12px 0 16px}
.column-public .column-masthead p:not(.column-kicker){font-size:17px;line-height:2;color:#405c6d}
.column-public .column-text-link{display:inline-flex;align-items:center;gap:28px;color:#1a527b!important;font-size:15px;font-weight:700;padding-block:10px;min-height:24px}
.column-public .column-masthead .column-text-link{margin-top:4px;border-bottom:1px solid #7394a6}
.column-public .column-masthead-art{display:none}
.column-public .column-guides,.column-public .column-library{margin-top:58px}
.column-public .column-section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:23px}
.column-public .column-section-heading h2{font-size:27px;margin:6px 0 0;letter-spacing:.025em}
.column-public .column-section-heading>p{font-size:15px;color:var(--column-muted)}
.column-public .column-guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.column-public .column-guide{display:flex;flex-direction:column;padding:25px 24px 18px;border:1px solid #dbe3e8;border-radius:6px;background:#fff;color:#183446!important;border-top:3px solid #89a9c2;transition:border-color .18s,box-shadow .18s}
.column-public .column-guide:hover{border-color:#8faebf;box-shadow:0 7px 20px #1537440a}
.column-public .column-guide>div{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:20px}
.column-public .guide-number{font-size:26px;letter-spacing:.06em;color:#607d90;line-height:1;font-family:Georgia,serif}
.column-public .column-tag{display:inline-block;border-radius:3px;background:#edf3f7;color:#315d7a;font-size:13px;font-weight:600;padding:5px 10px;line-height:1.5;overflow-wrap:anywhere}
.column-public .column-guide h3{font-size:20px;line-height:1.7;margin:0 0 8px}
.column-public .column-guide p{font-size:16px;color:var(--column-muted);line-height:1.9;flex:1}
.column-public .column-guide-more{display:flex;justify-content:space-between;align-items:center;font-size:14px;font-weight:600;margin-top:23px;padding-top:13px;border-top:1px solid #e9edef}
.column-public .column-tone-estimate{border-top-color:#8ba899}
.column-public .column-tone-estimate .column-tag{background:#edf4ef;color:#3d6553}
.column-public .column-tone-invoice{border-top-color:#b6a181}
.column-public .column-tone-invoice .column-tag{background:#f6f1e9;color:#765b36}
.column-public .column-library{border-top:1px solid #dfe5e7;padding-top:36px;scroll-margin-top:25px}
.column-public .column-search{max-width:550px;margin-bottom:18px}
.column-public .column-search label{font-size:15px;font-weight:600;color:#435e6e;margin-bottom:8px}
.column-public .column-search>div{display:flex;gap:8px}
.column-public .column-search input{font-size:16px;border:1px solid #bcccd6;border-radius:5px;min-width:0;padding:12px 14px}
.column-public .column-search button{font-size:16px;white-space:nowrap;border-radius:5px;padding:10px 23px;background:#203e55;color:#fff;border-color:#203e55}
.column-public .column-categories{display:flex;gap:8px;flex-wrap:wrap;margin:17px 0 25px}
.column-public .column-categories a{border:1px solid #d9e2e8;border-radius:4px;font-size:14px;padding:8px 14px;background:white}
.column-public .column-categories a[aria-current]{background:#203e55;border-color:#203e55;color:white}
.column-public .column-filter-summary{font-size:15px;margin-bottom:22px;overflow-wrap:anywhere}
.column-public .column-filter-summary a{margin-left:14px;text-decoration:underline}
.column-public .column-story-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
.column-public .column-story{min-width:0;background:#fff;border:1px solid #dfe5e9;border-radius:6px;padding:26px;display:flex;flex-direction:column}
.column-public .column-story-image{display:block;margin:-26px -26px 24px;aspect-ratio:16/9;border-radius:5px 5px 0 0;overflow:hidden;background:#edf1f3}
.column-public .column-story-image img{display:block;width:100%;height:100%;object-fit:cover}
.column-public .column-story-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.column-public .column-story time{font-size:14px;color:var(--column-muted)}
.column-public .column-story h3{font-size:23px;line-height:1.65;margin:18px 0 12px;overflow-wrap:anywhere}
.column-public .column-story h3 a{color:#203e55}
.column-public .column-story>p{color:var(--column-muted);font-size:17px;line-height:1.9;overflow-wrap:anywhere;flex:1;margin:0}
.column-public .column-story .column-text-link{align-self:flex-start;margin-top:18px}
.column-public .column-empty{border:1px solid #e1e6e7;background:#f4f6f5;border-radius:7px;padding:34px 25px 37px;text-align:center}
.column-public .column-empty-mark{display:inline-block;color:#526f68;font-size:13px;letter-spacing:.14em;margin-bottom:13px;border-bottom:1px solid #b6c8c3;padding:0 6px 6px}
.column-public .column-empty h3{font-size:22px;margin-bottom:9px}
.column-public .column-empty p{font-size:16px;line-height:2;color:#486057}
.column-public .column-empty a{font-size:16px;text-decoration:underline}
.column-public .column-bottom-cta{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:32px 36px;margin-top:58px;border:1px solid #d4e1e8;border-radius:8px;background:#edf3f7}
.column-public .column-bottom-cta h2{font-size:26px;margin:7px 0 9px}
.column-public .column-bottom-cta p:not(.column-kicker){font-size:17px;color:#425e70}
.column-public .column-bottom-cta .column-button{flex-shrink:0}
.column-public .column-footer{padding:28px 24px;font-size:14px;background:#f4f6f5}
.column-public .column-footer small{font-size:13px}
.column-public .column-main>article.column-reading{max-width:none;background:transparent;padding:0;border:0;border-radius:0}
.column-public .column-article-heading{max-width:820px;margin:45px auto 40px}
.column-public .column-article-labels{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.column-public .column-article-heading h1{font-size:clamp(30px,3.5vw,42px);line-height:1.6;letter-spacing:.02em;margin:18px 0 21px}
.column-public .column-article-heading .column-summary{font-size:18px;line-height:2;color:var(--column-muted)}
.column-public .column-byline{display:flex;flex-wrap:wrap;gap:5px 18px;border-top:1px solid #dce4e7;margin-top:27px;padding-top:17px;font-size:14px;color:var(--column-muted)}
.column-public .column-article-cover{max-width:1088px;margin-bottom:44px}
.column-public .column-article-cover figcaption,.column-public .column-prose .column-figure figcaption{font-size:14px;color:var(--column-muted);line-height:1.85}
.column-public .column-reading-layout{display:grid;grid-template-columns:minmax(0,760px) 280px;gap:40px;align-items:start;max-width:1088px;margin:auto;justify-content:center}
.column-public .column-reading-content{grid-column:1;grid-row:1;min-width:0}
.column-public .column-reading-aside{grid-column:2;grid-row:1;position:sticky;top:24px;max-height:calc(100vh - 48px);overflow-y:auto;scrollbar-width:thin}
.column-public .column-toc{padding:23px 21px;background:#f0f4f4;border:1px solid #dfe7e8;border-radius:5px}
.column-public .column-toc h2{font-size:18px;margin:4px 0 17px}
.column-public .column-toc ol{list-style:none;margin:0;padding:0;counter-reset:toc}
.column-public .column-toc li{margin:13px 0;font-size:15px;line-height:1.85;overflow-wrap:anywhere}
.column-public .column-toc li:not(.toc-child){counter-increment:toc}
.column-public .column-toc li:not(.toc-child):before{content:counter(toc,decimal-leading-zero) ' ';color:#557484;font-size:13px;margin-right:6px}
.column-public .column-toc .toc-child{padding-left:24px;font-size:14px}
.column-public .column-toc a{color:#304f62}
.column-public .column-reading-note{padding:23px 21px;font-size:14px}
.column-public .column-reading-note p{font-weight:600;margin-bottom:9px}
.column-public .column-reading-note a{display:block;padding:5px 0;color:#47677b}
.column-public.column-article-page .column-prose{margin:0;background:#fff;border:1px solid #e1e6e8;border-radius:6px;padding:34px 36px;line-height:2;font-size:18px;color:#233a47}
.column-public.column-article-page .column-prose>h2:first-child{margin-top:4px}
.column-public.column-article-page .column-prose h2{font-size:26px;line-height:1.65;margin-top:52px;margin-bottom:24px;border-bottom:2px solid #d5e3e8;padding-bottom:14px;scroll-margin-top:24px}
.column-public.column-article-page .column-prose h3{font-size:22px;line-height:1.7;margin:36px 0 18px;scroll-margin-top:24px}
.column-public.column-article-page .column-prose p{margin:0 0 28px}
.column-public.column-article-page .column-prose ul,.column-public.column-article-page .column-prose ol{padding-left:1.5em;margin:0 0 28px}
.column-public.column-article-page .column-prose li+li{margin-top:7px}
.column-public.column-article-page .column-prose a{text-decoration:underline;text-underline-offset:3px}
.column-public.column-article-page .column-prose table{font-size:16px;line-height:1.9;margin:26px 0 32px}
.column-public.column-article-page .column-prose th,.column-public.column-article-page .column-prose td{padding:13px 14px;min-width:5em}
.column-public .column-sources{padding:24px 28px;background:#f1f4f3;border-radius:5px;margin-top:25px;font-size:14px;overflow-wrap:anywhere}
.column-public .column-sources h2{font-size:18px;margin-bottom:12px}
.column-public .column-sources ol{padding-left:20px;margin:0}
.column-public .column-sources li+li{margin-top:9px}
.column-public.column-article-page .column-cta{margin-top:30px;padding:28px;background:#eaf1f6;border-radius:6px}
.column-public.column-article-page .column-cta h2{font-size:25px;margin:7px 0 12px}
.column-public.column-article-page .column-cta p:not(.column-kicker){font-size:17px;line-height:1.9;margin-bottom:20px}
.column-public .column-related{margin:38px 0}
.column-public .column-related h2{font-size:24px;margin-bottom:17px}
.column-public .column-related ul{list-style:none;padding:0;margin:0}
.column-public .column-related a{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:17px 0;border-bottom:1px solid #dce4e7;font-size:16px}
.column-public .column-back-link{display:inline-block;margin-top:28px;font-size:16px}
@media(max-width:960px){
  .column-public .column-masthead{padding:28px 32px}
  .column-public .column-guide{padding:22px 18px 16px}
  .column-public .column-guide h3{font-size:19px}
  .column-public .column-reading-layout{display:flex;flex-direction:column;gap:30px;max-width:820px}
  .column-public .column-reading-aside{position:static;width:100%;max-height:none;overflow:visible}
  .column-public .column-reading-note{display:none}
  .column-public .column-reading-content{width:100%}
  .column-public.column-article-page .column-prose{padding:32px}
}
@media(max-width:700px){
  .column-public .column-header{padding:18px 16px;min-height:76px;align-items:center;gap:16px}
  .column-public .column-brand img{width:112px}
  .column-public .column-header nav{gap:12px;font-size:14px}
  .column-public .column-header .column-button{padding:10px 12px;font-size:14px}
  .column-public .column-main{padding:19px 20px 42px}
  .column-public .column-breadcrumb{font-size:13px;margin-bottom:23px}
  .column-public .column-masthead{padding:25px 23px}
  .column-public .column-masthead h1{font-size:31px;line-height:1.5}
  .column-public .column-masthead p:not(.column-kicker){font-size:16px}
  .column-public .column-masthead-art{display:none}
  .column-public .column-masthead .column-kicker{font-size:14px}
  .column-public .column-masthead .column-text-link{margin-top:12px}
  .column-public .column-guides,.column-public .column-library{margin-top:37px}
  .column-public .column-section-heading{display:block;margin-bottom:18px}
  .column-public .column-section-heading h2{font-size:25px}
  .column-public .column-section-heading>p{margin-top:10px;font-size:14px}
  .column-public .column-guide-grid{grid-template-columns:1fr;gap:16px}
  .column-public .column-guide{padding:21px 22px 16px}
  .column-public .column-guide>div{margin-bottom:12px}
  .column-public .column-guide h3{font-size:20px;margin-bottom:5px}
  .column-public .column-guide-more{margin-top:14px;padding-top:11px}
  .column-public .guide-number{font-size:25px}
  .column-public .column-library{padding-top:28px}
  .column-public .column-story-grid{grid-template-columns:1fr;gap:24px}
  .column-public .column-story{padding:22px}
  .column-public .column-story-image{margin:-22px -22px 21px}
  .column-public .column-story h3{font-size:22px}
  .column-public .column-story>p{font-size:16px}
  .column-public .column-empty{padding:27px 18px}
  .column-public .column-empty h3{font-size:20px}
  .column-public .column-empty p{font-size:16px}
  .column-public .column-bottom-cta{margin-top:36px;display:block;padding:25px}
  .column-public .column-bottom-cta h2{font-size:24px}
  .column-public .column-bottom-cta .column-button{margin-top:21px}
  .column-public .column-article-heading{margin:28px 0 30px}
  .column-public .column-article-heading h1{font-size:29px;line-height:1.6}
  .column-public .column-article-heading .column-summary{font-size:17px}
  .column-public .column-article-cover{margin-bottom:32px}
  .column-public .column-reading-layout{gap:30px}
  .column-public .column-toc{padding:20px}
  .column-public .column-toc li{font-size:15px}
  .column-public .column-toc .toc-child{font-size:14px}
  .column-public.column-article-page .column-prose{padding:0;background:transparent;border:0;border-radius:0;font-size:17px;line-height:2}
  .column-public.column-article-page .column-prose h2{font-size:24px;margin-top:44px}
  .column-public.column-article-page .column-prose h3{font-size:21px}
  .column-public.column-article-page .column-prose th,.column-public.column-article-page .column-prose td{padding:11px 12px}
  .column-public .column-byline{font-size:13px}
  .column-public .column-sources{padding:22px 20px}
  .column-public.column-article-page .column-cta{padding:25px 22px}
  .column-public .column-footer{gap:10px 18px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .column-public .column-guide{transition:none}
}