:root{--ink:#1a1a1a;--sub:#666;--line:#e0d8c8;--bg:#faf7f0;--accent:#7a2e2e;--ai:#1f5673}
*{box-sizing:border-box}body{margin:0;font-family:"Hiragino Mincho ProN","Yu Mincho",serif;color:var(--ink);background:var(--bg);line-height:1.9}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
header{background:#3a2a22;color:#f5efe2;padding:14px 22px}header a{color:#f5efe2}
.wrap{max-width:1000px;margin:0 auto;padding:22px}
h1{font-size:1.5rem;margin:.2em 0}h2{font-size:1.25rem;border-left:5px solid var(--accent);padding-left:.5em;margin-top:1.6em}
h3{font-size:1.05rem;color:var(--accent)}
.nav{display:flex;justify-content:space-between;margin:18px 0;font-size:.95rem}
.base{background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px;display:grid;grid-template-columns:1fr 260px;gap:18px}
.base .img img{width:100%;border:1px solid var(--line)}
.base .img .cap{font-size:.8rem;color:var(--sub);text-align:center}
.genbun{font-size:1.15rem;letter-spacing:.03em}.kaki{color:#333}.yaku{background:#f4efe4;padding:.6em .8em;border-radius:6px}
mark.hl{background:#fbe5b0;border-radius:2px;padding:0 .12em;color:inherit}
.genbun mark.hl{background:#fbe5b0}
.legend{display:flex;flex-wrap:wrap;gap:6px 14px;margin:8px 0 4px;font-size:.82rem}
.legend b{border-left:14px solid var(--c);padding-left:6px;font-weight:600;color:#333}
.lbl{display:inline-block;font-size:.72rem;color:#fff;background:var(--sub);border-radius:4px;padding:1px 7px;margin-right:6px;vertical-align:middle}
.ed{border:1px solid var(--line);border-left:6px solid var(--c,#ccc);border-radius:8px;margin:12px 0;background:#fff;scroll-margin-top:14px}
.ed>summary{cursor:pointer;padding:12px 16px;font-weight:600;list-style:none}
.ed>summary::-webkit-details-marker{display:none}
.ed>summary:before{content:"▸ ";color:var(--c,var(--accent))}
.ed[open]>summary:before{content:"▾ "}
.ed[target]{box-shadow:0 0 0 3px var(--c)}
.ed:target{box-shadow:0 0 0 3px var(--c)}
.ed .body{padding:0 16px 14px}
.src{font-size:.85rem;color:var(--sub)}
.views{background:#eef4f7;border:1px solid #bcd4de;border-radius:8px;padding:20px;margin-top:10px}
.views h2{border-color:var(--ai);color:var(--ai)}
.caveat{font-size:.85rem;color:#4a6b78;background:#e2eef3;border-radius:6px;padding:.5em .8em;margin:.4em 0 1em}
.persona{border-left:3px solid #bcd4de;padding-left:12px;margin:12px 0}
.cite{color:inherit;text-decoration:none;border-bottom:2px solid var(--c);background:linear-gradient(transparent 82%, color-mix(in srgb,var(--c) 22%,transparent) 82%);white-space:nowrap;font-weight:600}
.cite:hover{background:color-mix(in srgb,var(--c) 22%,transparent)}
.muted{color:var(--sub)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(66px,1fr));gap:8px}
.grid a{background:#fff;border:1px solid var(--line);border-radius:6px;text-align:center;padding:10px 2px}
.grid a .kn{font-size:1.05rem}
.groupbox{background:#fff;border:1px solid var(--line);border-radius:8px;padding:14px 18px;margin:12px 0}
footer{color:var(--sub);font-size:.8rem;text-align:center;padding:30px}
/* index の案内カード */
.callout{background:#fff;border:1px solid var(--line);border-left:6px solid var(--ai);border-radius:8px;padding:14px 18px;margin:16px 0}
.callout a{font-size:1.1rem;font-weight:600}
.callout p{margin:.35em 0 0;font-size:.9rem;color:var(--sub)}
/* 読解本文 */
.essay{--wood:#2f8f6e;--fire:#c8452f;--earth:#b07d18;--metal:#7a7f74;--water:#2f5f9e;max-width:760px;margin:0 auto}
.essay .lede{font-size:1.16rem;line-height:2.05}
.essay .lede .drop{float:left;font-size:3.4rem;line-height:.78;padding:.08em .16em 0 0;color:var(--accent);font-weight:600}
.essay .emeta{font-family:ui-monospace,Menlo,monospace;font-size:.8rem;letter-spacing:.14em;color:var(--accent);margin:2.2em 0 .3em}
.essay h2.e{border-left:5px solid var(--accent);padding-left:.5em;font-size:1.3rem;margin:.1em 0 .7em}
.essay p{margin:0 0 1.1em}
.essay em{font-style:normal;color:var(--ink);font-weight:600}
.essay .pull{border-left:4px solid var(--accent);padding:.15em 0 .15em 1em;font-size:1.2rem;line-height:1.7;color:#5a2626;margin:1.4em 0}
.essay .cnr{border-bottom:2px solid color-mix(in srgb,var(--accent) 45%,transparent);font-weight:600;white-space:nowrap}
.essay strong{font-weight:700;background:linear-gradient(transparent 60%,#fbe5b0 60%)}
.essay .el{border-bottom:2px solid var(--e);padding:0 1px}
.essay .partdiv{border-top:1px solid var(--line);margin-top:2.6em;padding-top:2em}
.essay .partdiv .k{font-family:ui-monospace,monospace;letter-spacing:.2em;color:var(--accent);font-size:.85rem;text-align:center}
.tech{background:#eef4f7;border:1px solid #bcd4de;border-radius:8px;padding:18px 20px;margin:18px 0}
.tech .tag{display:inline-block;font-family:ui-monospace,monospace;font-size:.7rem;letter-spacing:.12em;color:var(--ai);border:1px solid #9cc0cf;border-radius:3px;padding:2px 8px;margin-bottom:.6em}
.tech h4{color:var(--ai);margin:.2em 0 .5em;font-size:1.05rem}
.tech p{font-size:.95rem;color:#33505c;margin:0 0 .8em}
.tech dl.proto{margin:.6em 0}
.tech dl.proto dt{font-weight:700;color:#1f5673;font-size:.85rem;margin-top:.4em}
.tech dl.proto dd{margin:.1em 0 .5em;color:#33505c;font-size:.92rem}
.tech .proto b,.tech p b{color:#1f5673}
.tech .fal{border-top:1px dashed #9cc0cf;margin-top:.6em;padding-top:.6em;font-size:.9rem;color:#4a6b78}
.tech .fal b{color:var(--accent)}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:8px;margin:1em 0;background:#fff}
table.etab{border-collapse:collapse;width:100%;min-width:640px;font-size:.9rem}
table.etab th,table.etab td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.6}
table.etab thead th{font-size:.72rem;letter-spacing:.06em;color:var(--sub);background:#f4efe4;font-weight:600}
table.etab tbody th{white-space:nowrap;border-left:4px solid var(--e,#ccc);font-weight:600}
table.etab tbody tr.grp td{background:#f4efe4;font-size:.72rem;letter-spacing:.14em;color:var(--sub);font-weight:700;border-left:4px solid var(--e,#ccc)}
table.etab td.nan{white-space:nowrap}
table.etab td.nan a{font-family:ui-monospace,monospace;font-size:.82rem}
figure.basin,figure.mlnet{margin:1.2em auto;max-width:664px}
figure.basin canvas,figure.mlnet canvas{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:8px;background:#fbf8f1}
figure.mlnet{max-width:700px}
.blegend{display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:center;margin:12px auto 0;font-size:.78rem;color:var(--sub)}
.blegend span{display:inline-flex;align-items:center;gap:6px}
.blegend i{width:12px;height:12px;border-radius:2px;display:inline-block;flex:none}
.blegend i.rd{border:1px dashed var(--accent);border-radius:50%;background:none}
.bcap{font-size:.85rem;color:var(--sub);text-align:center;max-width:60ch;margin:12px auto 0;line-height:1.75}
.readguide{background:#fbf7ee;border:1px solid var(--line);border-radius:8px;padding:16px 20px;margin:1.4em 0}
.readguide h4{margin:.1em 0 .5em;color:var(--accent);font-size:1.02rem}
.readguide dl.gloss{margin:.4em 0 0;display:grid;grid-template-columns:auto 1fr;gap:5px 14px;font-size:.92rem}
.readguide dl.gloss dt{font-weight:700;color:var(--ink);white-space:nowrap}
.readguide dl.gloss dd{margin:0;color:#4a4034;line-height:1.7}
.tech .plain{background:#fff;border-radius:6px;padding:.55em .85em;margin:0 0 .9em;font-size:.98rem;line-height:1.8;color:var(--ink);border-left:3px solid var(--ai)}
.tech .plain b{color:var(--accent)}
/* 全一巻（結合ページ） */
.toc{background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px 20px;margin:18px 0}
.toc>h2{margin-top:0;border:none;padding:0;font-size:1.2rem}
.tocg{margin:9px 0}
.tocg>b{display:block;color:var(--accent);font-size:.92rem;margin-bottom:5px}
.tocrow{display:flex;flex-wrap:wrap;gap:5px 8px}
.tocrow a{font-size:.82rem;background:#faf7f0;border:1px solid var(--line);border-radius:5px;padding:2px 8px;white-space:nowrap}
.grouphead{border-left:none;border-bottom:3px double var(--accent);padding:0 0 .25em;font-size:1.5rem;margin:2.4em 0 .2em;color:var(--accent)}
.grintro{color:#4a4034;background:#fbf7ee;border-radius:8px;padding:12px 16px;margin:12px 0 22px}
.nanfull{border-top:1px solid var(--line);padding-top:16px;margin-top:30px}
.nanhead{font-size:1.35rem;color:var(--ink);border-left:6px solid var(--accent);padding-left:.5em;margin:.2em 0 .7em}
.nanhead .tocback{font-size:.68rem;font-weight:400;color:var(--sub);border-bottom:1px solid var(--line);vertical-align:middle;margin-left:.4em}
.nsub{font-weight:700;color:var(--accent);font-size:1.05rem;margin:1.3em 0 .5em;border-left:4px solid var(--accent);padding-left:.5em}
.totop{position:fixed;right:16px;bottom:16px;background:#3a2a22;color:#f5efe2;border-radius:20px;padding:8px 15px;font-size:.85rem;box-shadow:0 3px 10px rgba(0,0,0,.25);z-index:20}
.totop:hover{text-decoration:none;background:#4a352a}
@media(max-width:520px){.essay .lede .drop{font-size:2.6rem}.readguide dl.gloss{grid-template-columns:1fr;gap:2px 0}.readguide dl.gloss dd{margin:0 0 .5em}}
/* ── 一部閲覧（プレビュー／サブスク・ゲート）── */
.pvbar{background:#2f8f6e;color:#fff;text-align:center;font-size:.85rem;padding:7px 14px;letter-spacing:.02em}
.pvbar a{color:#fff;text-decoration:underline;font-weight:600}
.hero{background:linear-gradient(180deg,#3a2a22,#4a352a);color:#f5efe2;border-radius:12px;padding:34px 30px;margin:6px 0 22px}
.hero h1{font-size:1.8rem;margin:0 0 .3em;color:#fff;border:none;padding:0}
.hero p{margin:.2em 0 0;color:#e8dcc8;font-size:1rem;max-width:60ch;line-height:1.85}
.hero .k{font-family:ui-monospace,monospace;letter-spacing:.18em;font-size:.72rem;color:#e0b45a;margin-bottom:.7em}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin:14px 0}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 18px;display:flex;flex-direction:column}
.card .tg{font-size:.68rem;letter-spacing:.12em;color:var(--accent);font-family:ui-monospace,monospace;margin-bottom:.4em}
.card.free .tg{color:#2f8f6e}
.card h3{margin:.1em 0 .35em;font-size:1.08rem;color:var(--ink)}
.card p{margin:0 0 .8em;font-size:.9rem;color:var(--sub);line-height:1.7;flex:1}
.card a.go{font-weight:600;font-size:.92rem}
.free-badge{display:inline-block;font-size:.66rem;color:#fff;background:#2f8f6e;border-radius:4px;padding:1px 7px;margin-left:6px;vertical-align:middle}
.grid a.lock{opacity:.72;position:relative;background:#f4efe9}
.grid a.lock:after{content:"🔒";position:absolute;top:2px;right:4px;font-size:.62rem}
.grid a.free-n{border-color:#2f8f6e;box-shadow:inset 0 0 0 1px #2f8f6e}
.gate{background:linear-gradient(180deg,#fff,#fbf7ee);border:1px solid var(--line);border-top:4px solid var(--accent);border-radius:12px;padding:26px 28px;margin:1.4em auto;max-width:760px;text-align:center}
.gate .k{font-family:ui-monospace,monospace;letter-spacing:.16em;color:var(--accent);font-size:.75rem;margin-bottom:.5em}
.gate h3{margin:.1em 0 .4em;font-size:1.25rem;color:var(--ink)}
.gate p{color:var(--sub);font-size:.95rem;max-width:52ch;margin:.3em auto .9em;line-height:1.8}
.subcta{display:inline-block;background:var(--accent);color:#fff;font-weight:700;border-radius:8px;padding:11px 26px;font-size:1rem;margin:.4em 0}
.subcta:hover{background:#611f1f;text-decoration:none}
.subnote{font-size:.8rem;color:var(--sub);margin-top:.6em}
.planbox{background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px 22px;margin:16px 0}
.planbox ul{margin:.4em 0 0;padding-left:1.2em}.planbox li{margin:.3em 0;line-height:1.7}
.fade{-webkit-mask-image:linear-gradient(180deg,#000 62%,transparent);mask-image:linear-gradient(180deg,#000 62%,transparent)}