:root{
  --navy:#123c33;--navy-2:#092d27;--blue:#123c33;--cyan:#a9bfad;
  --orange:#a27b38;--paper:#f3f1e9;--white:#faf9f4;--ink:#1f2926;--muted:#5e6864;
  --line:#d5d5ca;--soft:#dfe8df;--shadow:none;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN",system-ui,-apple-system,sans-serif;line-height:1.85}
body::before{content:"";position:fixed;inset:0 0 auto;height:4px;background:linear-gradient(90deg,var(--cyan),var(--blue),var(--orange));z-index:100}
a{color:#17657b;text-decoration-thickness:1px;text-underline-offset:4px}
a:hover{color:#0d4150}
a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,button:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
.skip-link{position:fixed;left:18px;top:-80px;z-index:200;background:var(--white);padding:10px 16px;border-radius:8px;color:var(--navy);font-weight:700;box-shadow:var(--shadow)}
.skip-link:focus{top:14px}
.site-nav{position:sticky;top:0;z-index:80;margin:0;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(217,228,235,.9)}
.site-nav .nav-inner{max-width:1180px;margin:auto;padding:13px 28px;display:flex;align-items:center;gap:24px}
.site-nav .nav-brand{font-size:1.05rem;font-weight:900;letter-spacing:.18em;color:var(--navy);text-decoration:none;margin-right:auto}
.site-nav .nav-links{display:flex;align-items:center;gap:22px;margin:0}
.site-nav .nav-links a{font-size:.9rem;font-weight:700;color:var(--navy);text-decoration:none}
.site-nav .nav-links a:hover{color:var(--blue)}
.nav-cta{border-radius:999px;background:var(--navy);color:white!important;padding:8px 15px}
header{position:relative;overflow:hidden;background:var(--navy);color:#fff;border:0}
header::after{content:"";position:absolute;width:520px;height:520px;border-radius:50%;right:-180px;top:-265px;background:radial-gradient(circle at 35% 35%,rgba(92,200,190,.45),rgba(31,111,139,.05) 68%);pointer-events:none}
header .wrap{max-width:1180px;padding:78px 28px 72px;position:relative;z-index:1}
header .brand{display:none}
header .eyebrow{color:#9de1da;font-size:.78rem;letter-spacing:.16em;margin:0 0 12px}
header h1{max-width:780px;margin:0 0 18px;font-size:clamp(2.5rem,7vw,5.2rem);line-height:1.12;letter-spacing:-.035em;text-wrap:balance}
header h1 br{display:none}
header .intro{max-width:670px;color:#d7e8f0;font-size:1.05rem;line-height:1.9}
.stats{max-width:660px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin:34px 0 0;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.18);border-radius:14px;overflow:hidden}
.stat{border:0;border-radius:0;background:rgba(255,255,255,.06);padding:18px 22px;color:white}
.stat strong{font-size:2rem;line-height:1.15}.stat span{color:#bdd3df;font-size:.75rem}
main.wrap{max-width:1180px;padding:0 28px 72px}
main>section:first-child{margin-top:-28px;position:relative;z-index:5;background:white;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow)}
main>section:first-child h2{margin-top:0;font-size:1.5rem;color:var(--navy)}
.paths{grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:0}
.path{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:14px;padding:20px;background:#fff;transition:transform .2s ease,box-shadow .2s ease}
.path::before{content:"";display:block;width:38px;height:4px;margin-bottom:15px;border-radius:4px;background:var(--cyan)}
.path:nth-child(2)::before{background:var(--blue)}.path:nth-child(3)::before{background:var(--orange)}
.path:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(16,42,67,.09)}
.path strong{font-size:1.05rem;color:var(--navy)}
.path .muted{min-height:2.2em}
.path>a{display:inline-flex;align-items:center;justify-content:center;min-width:2.6rem;height:2rem;margin:2px;border-radius:999px;background:var(--soft);text-decoration:none;font-size:.76rem;font-weight:800}
section[aria-label="記事の絞り込み"]{margin:42px 0 20px}
.filters{position:sticky;top:70px;z-index:60;display:grid;grid-template-columns:2fr 1fr 1fr auto;align-items:end;gap:12px;padding:18px;background:rgba(234,245,244,.96);border:1px solid #cfe3e0;border-radius:16px;box-shadow:0 8px 22px rgba(16,42,67,.06);backdrop-filter:blur(12px)}
.filters label{gap:5px;color:var(--navy);font-weight:800;font-size:.76rem}
input,select,button{min-height:46px;border:1px solid #9bb0bd;border-radius:10px;padding:10px 12px;background:#fff;color:var(--ink);font:inherit}
input[type=search]{padding-left:14px}
button{font-weight:800;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
button:hover{background:var(--navy);border-color:var(--navy);color:#fff}
#result{margin:12px 4px 0;color:var(--muted);font-weight:700}
details.article{border:1px solid var(--line);border-radius:15px;margin:12px 0;background:white;overflow:hidden;box-shadow:0 4px 14px rgba(16,42,67,.035);transition:border-color .2s,box-shadow .2s}
details.article:hover{border-color:#acc8d5;box-shadow:0 8px 24px rgba(16,42,67,.07)}
details.article[open]{border-color:#8db9c3;box-shadow:var(--shadow);margin:26px 0}
summary{position:relative;list-style:none;padding:21px 62px 21px 24px;cursor:pointer}
summary::-webkit-details-marker{display:none}
summary::after{content:"＋";position:absolute;right:22px;top:50%;transform:translateY(-50%);width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--soft);color:var(--blue);font-size:1.25rem;font-weight:500}
details[open]>summary::after{content:"−";background:var(--navy);color:#fff}
summary .meta{display:block;margin:0 0 5px;color:var(--blue);font-size:.72rem;letter-spacing:.04em;font-weight:800}
summary strong{display:block;font-size:1.13rem;line-height:1.55;color:var(--navy);text-wrap:balance}
summary .synopsis{display:block;margin:6px 0 0;color:var(--muted);font-size:.89rem;line-height:1.65}
.articlebody{max-width:820px;margin:0 auto;padding:8px 32px 42px;font-size:1rem}
.articlebody h3{margin-top:2.4em;padding-top:.2em;color:var(--navy);font-size:1.35rem;line-height:1.55}
.articlebody p,.articlebody li{line-height:1.9}
.note{margin:10px 0 30px;padding:16px 18px;border:0;border-left:4px solid var(--orange);border-radius:0 10px 10px 0;background:#fff5ee;color:#62412f;font-size:.86rem}
.badge{background:#ffe1d2;color:#8b3e1f;border-radius:999px;padding:4px 9px;font-weight:800}
pre{position:relative;margin:22px 0;padding:22px 20px;border:1px solid #c8d8e1;border-radius:12px;background:#edf3f7;overflow:auto;font-size:.87rem;line-height:1.75}
code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
.copy-code{float:right;min-height:34px;margin:-12px -10px 8px 12px;padding:5px 10px;border-color:#afc1cc;font-size:.72rem}
.table-wrap{margin:24px 0;border:1px solid var(--line);border-radius:12px;overflow:auto}
table{margin:0;min-width:620px;font-size:.9rem}th,td{border:0;border-bottom:1px solid var(--line);padding:13px 15px}tr:last-child td{border-bottom:0}th{background:#e6f1f3;color:var(--navy)}
.related{margin-top:32px;padding:20px 22px;border-radius:14px;background:var(--soft);border:1px solid #d2e8e5}.related strong{color:var(--navy)}
footer{margin:48px 0 0;padding:26px 0;border-top:1px solid var(--line);color:var(--muted);font-size:.8rem}
.reading-progress{position:fixed;top:0;left:0;width:0;height:4px;z-index:120;background:var(--orange)}
.back-top{position:fixed;right:20px;bottom:20px;width:46px;height:46px;border:0;border-radius:50%;background:var(--navy);color:#fff;box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translateY(10px);transition:.2s;z-index:70}
.back-top.visible{opacity:1;pointer-events:auto;transform:none}
[hidden]{display:none!important}
.site-nav{display:block}
header .wrap{padding-top:44px;padding-bottom:54px}
header h1{font-size:clamp(2rem,4.6vw,3.4rem);max-width:920px;line-height:1.3;word-break:normal;overflow-wrap:anywhere}
.stats{display:none}
.purpose-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.purpose-card{display:flex;flex-direction:column;gap:8px;padding:19px;border:1px solid var(--line);border-radius:12px;text-decoration:none;background:#f3f8fb}
.purpose-card strong{color:var(--navy);font-size:1.05rem}
.purpose-card span{color:var(--muted);font-size:.9rem;line-height:1.7}
.purpose-card:hover,.next-choice:hover{border-color:var(--blue);background:#eaf5f4}
.course-steps{padding-left:24px;margin:14px 0 0}
.course-steps li{margin:8px 0;font-size:.95rem}
.course-steps a{font-weight:700}
.reading-meta{display:block;margin-top:10px;color:var(--muted);font-size:.8rem}
.card-outcome{display:block;margin-top:4px;color:var(--blue);font-size:.9rem;font-weight:700}
.article-brief{background:#edf5fa;border:1px solid #d0e3ef;border-radius:12px;padding:18px;margin:10px 0 22px}
.article-brief p{margin:7px 0;font-size:.95rem}
.article-brief strong{display:block;color:var(--navy);font-size:.85rem}
.next-action{border-top:2px solid var(--line);margin-top:32px;padding-top:4px}
.next-action h3{margin-top:20px}
.next-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.next-choice{display:flex;flex-direction:column;gap:6px;border:1px solid var(--line);border-radius:12px;background:var(--soft);padding:16px;text-decoration:none}
.next-choice span{font-size:.85rem;color:var(--muted)}
.next-choice strong{font-size:1rem;line-height:1.7;color:var(--navy)}
.course-position{background:#edf3f7;padding:14px;border-radius:10px;font-size:.9rem}
@media(max-width:780px){.purpose-grid{grid-template-columns:repeat(2,minmax(0,1fr))}header .wrap{padding:30px 20px 48px}.next-grid{grid-template-columns:1fr}header h1{font-size:2.2rem}}
@media(max-width:430px){.purpose-grid{grid-template-columns:1fr}}
@media(max-width:780px){
  .site-nav .nav-inner{padding:11px 18px}.site-nav .nav-links a:not(.nav-cta){display:none}
  header .wrap{padding:58px 20px 64px}header h1{font-size:clamp(2.25rem,12vw,3.8rem)}
  .stats{grid-template-columns:repeat(3,1fr)}.stat{padding:14px 12px}.stat strong{font-size:1.65rem}
  main.wrap{padding:0 16px 56px}main>section:first-child{padding:20px;margin-top:-24px}.paths{grid-template-columns:1fr}.path .muted{min-height:0}
  .filters{position:static;grid-template-columns:1fr 1fr;padding:14px}.filters label:first-child{grid-column:1/-1}.filters button{align-self:end}
  summary{padding:18px 54px 18px 18px}.articlebody{padding:6px 18px 32px}.articlebody h3{font-size:1.2rem}
  .table-wrap{margin-left:-2px;margin-right:-2px}
}
@media(max-width:430px){.stats{grid-template-columns:1fr}.stat{display:flex;align-items:baseline;gap:10px}.filters{grid-template-columns:1fr}.filters label:first-child{grid-column:auto}.site-nav .nav-cta{padding:7px 12px;font-size:.8rem}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{.site-nav,.filters,.back-top,.reading-progress,.copy-code{display:none!important}header{background:white;color:var(--ink)}header .intro,header .eyebrow{color:var(--muted)}main>section:first-child{margin-top:20px;box-shadow:none}details.article{break-inside:auto}details.article:not([open]) .articlebody{display:block}.articlebody{max-width:none}}

/* Progressive disclosure keeps the first scan focused on the reader's task. */
header .intro{max-width:620px}
.purpose-grid{gap:16px}
.purpose-card{padding:22px;gap:10px}
.purpose-card span{font-size:.875rem;line-height:1.7}
.paths{gap:20px}
.path{padding:24px}
.path>strong{display:block;font-size:1.15rem}
.path>p{margin:12px 0 20px}
.path>.course-start{display:inline-flex;height:auto;min-height:44px;margin:0;padding:8px 14px;font-size:.9rem;background:var(--navy);color:#fff;border-radius:8px}
.course-disclosure{margin-top:18px;border-top:1px solid var(--line);padding-top:8px}
.course-disclosure>summary,.article-brief>summary{padding:12px 36px 12px 0;font-size:.875rem;font-weight:700;color:var(--muted);line-height:1.6}
.course-disclosure>summary::after,.article-brief>summary::after{right:0;width:24px;height:24px;font-size:1rem;background:transparent;color:var(--blue)}
.course-steps{margin:8px 0 4px}
details.article{margin:18px 0;border-radius:16px;scroll-margin-top:88px}
details.article>summary{padding:28px 76px 28px 32px}
details.article>summary .meta{margin:0 0 12px;font-size:.8125rem;letter-spacing:0}
details.article>summary strong{font-size:1.25rem;line-height:1.6;text-wrap:initial}
details.article>summary .synopsis{display:none}
.reading-meta{display:inline;margin:0;font-size:inherit;color:var(--muted);font-weight:400}
.card-outcome{margin-top:12px;font-size:.9375rem;font-weight:400;line-height:1.75}
details.article[open]>summary{max-width:760px;margin:auto;padding:36px 64px 28px 40px}
details.article[open]>summary strong{font-size:1.7rem;line-height:1.55}
details.article[open]>summary .synopsis{display:block;margin:16px 0 0;font-size:1rem;line-height:1.85}
details.article[open]>summary .card-outcome{margin-top:16px}
.articlebody{max-width:760px;padding:0 40px 56px;font-size:1.0625rem;overflow-wrap:anywhere}
.articlebody>p{margin:24px 0;line-height:2}
.articlebody>h3{margin:48px 0 20px;font-size:1.4rem;line-height:1.6}
.articlebody>ul,.articlebody>ol{margin:24px 0;padding-left:1.5em}
.articlebody li{margin:14px 0;line-height:1.95}
.article-brief{padding:0 16px;margin:0 0 24px;background:#f7f9fb;border-color:var(--line)}
.article-brief>summary{color:var(--blue)}
.disclosure-content{padding:0 0 12px}
.article-brief p{margin:12px 0}
.note{padding:18px 20px;margin:24px 0 32px;line-height:1.85;font-size:.875rem}
.next-action{margin-top:48px;padding-top:12px}
.next-grid{gap:16px}
.next-choice{padding:20px}
@media(max-width:780px){
  header .wrap{padding:36px 24px 56px}header h1{font-size:clamp(1.9rem,7vw,2.8rem);line-height:1.4}
  header .intro{font-size:1rem}
  .purpose-grid{gap:12px}.purpose-card{padding:18px}.path{padding:22px}
  details.article>summary{padding:24px 54px 24px 22px}
  details.article>summary strong{font-size:1.15rem}
  details.article[open]>summary{padding:28px 54px 24px 24px}
  details.article[open]>summary strong{font-size:1.45rem}
  .articlebody{padding:0 24px 40px;font-size:1rem}
  .articlebody>h3{font-size:1.25rem;margin-top:40px}
  .articlebody>p{margin:22px 0}
  .note{padding:16px;margin:22px 0 28px}
  .filters label{min-width:0}
}
@media(max-width:430px){
  .purpose-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .purpose-card{padding:16px 12px}.purpose-card strong{font-size:.9375rem}
  .purpose-card span{display:none}
  main>section:first-child h2{font-size:1.25rem}
  .articlebody{padding-left:20px;padding-right:20px}
  details.article[open]>summary{padding-left:20px}
}
@media print{.article-brief>.disclosure-content,.course-disclosure>.course-steps{display:block!important}.article-brief>summary::after,.course-disclosure>summary::after{display:none}}

/* Keep orientation available without competing with the article text. */
header h1{overflow-wrap:normal;text-wrap:initial}
header h1>span{display:block}
.reader-nav{display:block;margin:0 0 24px;padding:0 0 16px;border-bottom:1px solid var(--line)}
.back-to-list{display:inline-flex;align-items:center;min-height:44px;font-size:.875rem;font-weight:700}
.article-toc{margin-top:8px}
.article-toc>summary{padding:12px 36px 12px 0;color:var(--blue);font-size:.9375rem;font-weight:700;line-height:1.6}
.article-toc>summary::after{right:0;width:24px;height:24px;font-size:1rem;background:transparent;color:var(--blue)}
.article-toc>ol{margin:8px 0 0;padding:0 0 0 24px}
.article-toc li{margin:0;font-size:.9375rem}
.article-toc a{display:inline-block;padding:8px 0;line-height:1.7}
.articlebody h3[id]{scroll-margin-top:100px}
.articlebody h3[id]:focus-visible{outline:2px solid var(--blue);outline-offset:8px;border-radius:2px}
.table-hint{color:var(--muted);font-size:.875rem!important;margin:24px 0 8px!important}
.table-hint+.table-wrap{margin-top:8px}
.table-wrap:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
.filters label{font-size:.875rem}
@media(max-width:430px){header h1{font-size:clamp(1.45rem,7vw,1.9rem)}}
@media print{.reader-nav,.table-hint{display:none!important}.reading-progress{display:none!important}}

.course-invitation{margin-top:32px;padding:24px;border:1px solid #cfe3e0;border-radius:12px;background:#eaf5f4}
.course-invitation>strong{display:block;font-size:1.0625rem;color:var(--navy)}
.course-invitation p{margin:12px 0;color:var(--muted);font-size:.9375rem}
.course-invitation a{display:inline-flex;align-items:center;min-height:44px;font-size:.9375rem;font-weight:700}
@media(max-width:780px){.site-nav .nav-links{gap:14px}.site-nav .nav-links a.course-link{display:inline-block;font-size:.875rem}}
@media(max-width:430px){.site-nav .nav-inner{gap:12px;padding-left:14px;padding-right:14px}.site-nav .nav-links{gap:12px}.site-nav .nav-cta{font-size:.75rem;padding:7px 9px}.site-nav .nav-brand{font-size:.9375rem}}
@media print{.course-invitation{display:none}}

/* Editorial layout uses the official TOMONI V2 palette and typography. */
body{font-family:"Hiragino Kaku Gothic ProN","Yu Gothic","YuGothic","Noto Sans JP",sans-serif;font-size:16px}
body::before,header::after,.path::before{display:none}
a{color:var(--navy)}a:hover{color:var(--navy-2)}
.site-nav{background:var(--white);backdrop-filter:none;border-color:var(--line)}
.site-nav .nav-brand{font-weight:700;letter-spacing:.14em}
.nav-cta{border-radius:3px}
header{background:var(--paper);color:var(--ink);border-bottom:1px solid var(--line)}
header .wrap{padding:64px 28px 60px}
header .eyebrow{color:var(--muted);font-size:.875rem;letter-spacing:.06em}
header h1{color:var(--navy);font-weight:700;line-height:1.45;letter-spacing:.015em;font-size:clamp(2rem,3.7vw,3rem)}
header .intro{color:var(--muted);margin-top:24px;max-width:640px}
main>section:first-child{margin-top:0;padding:40px 0;background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;box-shadow:none}
.purpose-grid{gap:0 32px}.purpose-card{padding:24px 0;border:0;border-top:1px solid var(--line);border-radius:0;background:transparent}
.purpose-card:hover,.next-choice:hover{background:var(--white);border-color:var(--navy)}
.paths{gap:32px}.path{background:transparent;border:0;border-top:2px solid var(--navy);border-radius:0;padding:24px 0;transition:none}
.path:hover{transform:none;box-shadow:none}.path>.course-start{border-radius:3px}
.filters{position:static;background:var(--white);border-color:var(--line);border-radius:3px;box-shadow:none;backdrop-filter:none}
input,select,button{border-radius:3px;border-color:var(--line)}
details.article{border-radius:0;border:0;border-bottom:1px solid var(--line);background:transparent;box-shadow:none;margin:0}
details.article:hover{border-color:var(--navy);box-shadow:none}
details.article[open]{background:var(--white);border:1px solid var(--line);box-shadow:none;margin:24px 0}
details.article>summary{padding-left:0}details.article[open]>summary{padding-left:40px}
summary::after{border-radius:0;background:transparent;color:var(--navy)}
details[open]>summary::after{background:transparent;color:var(--navy)}
.article-brief,.related,.next-choice,.course-position,.course-invitation{background:var(--soft);border-color:var(--line);border-radius:3px}
.course-invitation{border-left:3px solid var(--navy);background:var(--paper)}
.note{background:#e9dec8;color:#1f2926;border-radius:0;border-left-color:var(--orange)}
.badge{background:var(--paper);color:var(--ink);border-radius:3px}
pre{background:var(--paper);border-color:var(--line);border-radius:3px}
.copy-code{border-color:var(--line)}.table-wrap{border-radius:3px}th{background:var(--soft)}
.back-top{border-radius:3px}.course-link{border-bottom:1px solid var(--orange);padding-bottom:3px}
@media(max-width:780px){header .wrap{padding:40px 24px}main>section:first-child{padding:32px 0;margin-top:0}.paths{gap:12px}.purpose-grid{gap:0 24px}.purpose-card{padding:20px 0}.path{padding:24px 0}.articlebody{padding:0 24px 40px}details.article[open]>summary{padding-left:24px}}
@media(max-width:430px){header h1{font-size:1.8rem}.purpose-card{padding:20px 8px 20px 0}.purpose-card span{display:block;font-size:.875rem}.articlebody{padding-left:20px;padding-right:20px}details.article[open]>summary{padding-left:20px}.nav-links .nav-cta{display:none}}

/* Reading is primary; membership remains a secondary editorial link. */
header .wrap{padding-top:36px;padding-bottom:32px}
.media-entry{display:flex;align-items:center;flex-wrap:wrap;gap:12px 20px;margin-top:22px}
.media-entry>a{display:inline-flex;align-items:center;min-height:44px;padding:8px 18px;border-radius:3px;background:var(--navy);color:#fff;text-decoration:none;font-weight:700}
.media-entry>span{font-size:.875rem;color:var(--muted)}
.featured-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.featured-article{display:flex;flex-direction:column;gap:14px;padding:20px 0;border-top:2px solid var(--navy);text-decoration:none}
.featured-article strong{font-size:1.125rem;line-height:1.7}.featured-article>span:last-child{font-size:.875rem;color:var(--muted)}
.access-label{display:inline;font-size:.8125rem;font-weight:700;color:var(--navy)}
.purpose-section{padding:24px 0;border-bottom:1px solid var(--line)}
.course-invitation{padding:20px 0;background:transparent;border:0;border-top:1px solid var(--line)}
.course-link{border-bottom:0;font-weight:400!important}
@media(max-width:780px){.site-nav .nav-links a.media-link{display:inline-block;font-size:.875rem}.site-nav .nav-links{gap:14px}.featured-grid{grid-template-columns:1fr;gap:8px}.featured-article{gap:10px;padding:18px 0}.featured-article strong{font-size:1.0625rem}header .wrap{padding:28px 20px}}
@media(max-width:430px){.site-nav .nav-brand{font-size:.875rem;letter-spacing:.08em}.site-nav .nav-links a.media-link,.site-nav .nav-links a.course-link{font-size:.8125rem}}

/* The home page opens directly on the searchable article list. */
header .wrap{padding:22px 28px 16px}
header h1{font-size:1.5rem;line-height:1.5;margin:0;letter-spacing:0}
header .eyebrow,header .intro,header .stats{display:none}
main>section:first-child{padding:0;margin:20px 0 12px;border:0;background:transparent}
section[aria-label="記事の絞り込み"]{margin:20px 0 12px}
details.article>summary{padding-top:22px;padding-bottom:22px}
@media(max-width:780px){header .wrap{padding:18px 20px 12px}header h1{font-size:1.35rem}main>section:first-child{padding:0;margin-top:16px}.filters{padding:12px}.filters label{font-size:.875rem}}

/* Category blocks and typographic thumbnails make the index scannable. */
.category-jumps{display:flex;flex-wrap:wrap;gap:8px 12px;margin:18px 0 0}
.category-jumps a{display:inline-flex;align-items:center;min-height:40px;padding:6px 12px;border:1px solid var(--line);border-radius:3px;background:var(--white);font-size:.875rem;text-decoration:none}
.category-jumps a:hover{border-color:var(--navy)}
.article-group{padding:32px 0 12px;scroll-margin-top:86px}
.article-group>h2{display:flex;align-items:baseline;gap:18px;margin:0;font-size:1.4rem;color:var(--navy);border-top:2px solid var(--navy);padding-top:20px}
.group-count{font-size:.875rem;font-weight:400;color:var(--muted)}
.group-intro{margin:6px 0 22px;color:var(--muted);font-size:.9375rem}
.article-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:start}
.article-grid details.article{min-width:0;margin:0;border:1px solid var(--line);border-radius:3px;background:var(--white)}
.article-grid details.article>summary{padding:0 20px 22px;min-height:310px}
.article-grid details.article>summary::after{display:none}
.article-thumb{display:flex;flex-direction:column;justify-content:space-between;min-height:112px;margin:0 -20px 18px;padding:14px 20px;background:var(--navy);color:#faf9f4;border-bottom:1px solid var(--line)}
.thumb-category{font-size:.75rem;letter-spacing:.08em}.thumb-topic{font-size:1.35rem;line-height:1.5;font-weight:700}
.thumb-2{background:#dfe8df;color:var(--navy)}.thumb-3{background:#e9dec8;color:#403721}.thumb-4{background:#092d27;color:#faf9f4}.thumb-5{background:#d5d5ca;color:var(--ink)}
.article-grid details.article>summary .meta{margin-bottom:10px;font-weight:400;font-size:.8125rem}
.article-grid details.article>summary strong{font-size:1.0625rem;line-height:1.7}
.article-grid details.article>summary .card-outcome{font-size:.875rem;line-height:1.7;margin-top:12px;color:var(--muted)}
.article-grid details.article[open]{grid-column:1/-1;margin:4px 0 12px}
.article-grid details.article[open]>summary{max-width:760px;min-height:0;padding:32px 40px 24px}
.article-grid details.article[open]>summary strong{font-size:1.7rem}
.article-grid details.article[open] .article-thumb{display:none}
.article-grid details.article:not([open]):hover{border-color:var(--navy)}
/* Membership teasers must contain no restricted article body or file URL. */
.member-preview{position:relative;min-width:0;border:1px solid var(--line);border-radius:3px;background:var(--white);padding:0 20px 22px}.member-preview h3{font-size:1.0625rem;line-height:1.7}.member-preview>a{display:inline-flex;align-items:center;min-height:44px;font-size:.875rem}.member-preview .article-thumb{position:relative;overflow:hidden}
.member-preview .thumb-topic{filter:blur(5px);opacity:.45;user-select:none}
.member-preview .article-thumb::after{content:"";position:absolute;inset:0;background:rgba(250,249,244,.42);pointer-events:none}
.member-lock{position:absolute;inset:0;z-index:1;display:flex;align-items:center;justify-content:center;gap:8px;font-size:.875rem;font-weight:700;color:var(--navy)}
.member-lock svg{width:20px;height:20px;flex:none}
@media(max-width:1000px){.article-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.article-grid{grid-template-columns:1fr;gap:16px}.article-grid details.article>summary{min-height:0;padding-bottom:20px}.article-thumb{min-height:100px}.article-group{padding-top:26px}.article-group>h2{font-size:1.25rem}.article-grid details.article[open]>summary{padding:24px 20px}.article-grid details.article[open]>summary strong{font-size:1.4rem}}
@media print{.category-jumps,.article-thumb{display:none}.article-grid{display:block}.article-grid details.article>summary{min-height:0}}

/* Keep search recovery and learning navigation available on narrow screens. */
.search-help{margin:12px 4px 0;color:var(--muted);font-size:.8125rem}
.search-empty{margin:20px 0;padding:20px;border:1px solid var(--line);background:var(--white)}
.search-empty p{margin:0 0 14px;line-height:1.8}
.search-empty button{min-height:44px}
@media(max-width:780px){
  .site-nav .nav-links a.course-link{display:inline-flex;align-items:center;min-height:44px}
}
@media(max-width:430px){
  .site-nav .nav-inner{flex-wrap:wrap;gap:4px 12px;padding:8px 16px}
  .site-nav .nav-links{width:100%;justify-content:space-between;gap:8px}
  .site-nav .nav-links a{display:inline-flex;align-items:center;min-height:44px}
  .site-nav .nav-links a.nav-cta{display:inline-flex;padding:6px 12px;font-size:.8125rem}
  html{scroll-padding-top:120px}
  .article-group{scroll-margin-top:120px}
}
@media print{.search-help,.search-empty{display:none}}

/* Keep the supplied logo intact; the caption identifies the editorial media. */
.site-nav .nav-brand{display:flex;flex-direction:column;align-items:flex-start;letter-spacing:0;flex-shrink:0}
.site-nav .nav-brand img{display:block;width:210px;height:70px;max-width:100%;margin:-12px 0 -10px}
.site-nav .brand-caption{font-size:11px;line-height:1.6;font-weight:400;color:var(--muted)}
@media(max-width:780px){.site-nav .nav-inner{flex-wrap:wrap;gap:8px 16px}.site-nav .nav-links{flex-wrap:wrap}}
@media(max-width:430px){.site-nav .nav-brand img{width:186px;height:62px}.site-nav .brand-caption{font-size:10px}html{scroll-padding-top:150px}.article-group,details.article{scroll-margin-top:150px}}