/* Navigation and interactive overview */
.c1-list{margin-top:20px}.c1-group{padding:22px 0 8px;border-top:1px solid var(--line)}.c1-group h3{color:var(--gold);font-size:20px}.c1-item{padding:16px 0;border-bottom:1px solid var(--line)}.c1-item>summary{display:flex;gap:14px;align-items:baseline;cursor:pointer;font-weight:600}.c1-item>summary::after{content:'+';margin-left:auto}.c1-item[open]>summary::after{content:'−'}.c1-item .c1-development{font-size:18px;color:var(--white);max-width:850px;line-height:1.7}.c1-item>p,.c1-item>details{max-width:900px}.c1-item>details{margin:12px 0;padding:10px 0}.c1-item>details summary{font-size:13px}.c1-item figure{margin:18px 0;max-width:680px}.c1-item figure img{width:100%;max-height:400px;object-fit:contain;border-radius:6px}.c1-table{overflow-x:auto}.c1-table table{border-collapse:collapse;font-size:13px;width:100%}.c1-table th,.c1-table td{padding:10px;text-align:left;border:1px solid var(--line)}.c1-item p{overflow-wrap:anywhere}
.menu-button{background:none;color:var(--gold);border:1px solid var(--line);border-radius:4px;padding:3px 10px;font-size:12px}
.contents-dialog{width:min(780px,94vw);max-height:86vh;background:#12231b;color:var(--white);border:1px solid #dcc28a55;border-radius:12px;padding:28px}
.contents-dialog::backdrop{background:#07110cdf;backdrop-filter:blur(6px)}
.dialog-top{display:flex;justify-content:space-between;gap:20px}.dialog-top h2{font-size:30px}.close-menu{align-self:flex-start;color:var(--gold);background:transparent;border:1px solid var(--line);font-size:28px;border-radius:50%;width:42px;height:42px}
.contents-list{display:grid;gap:6px}.contents-list a{display:grid;grid-template-columns:35px 1fr 20px;gap:15px;padding:13px;border:1px solid var(--line);border-radius:5px}
.contents-list a:hover{background:#dcc28a12;border-color:var(--gold)}.contents-list a>span{color:var(--gold)}.contents-list small{display:block;color:var(--muted);font-size:12px}
.chapter-status{position:fixed;bottom:18px;right:22px;z-index:8;display:flex;align-items:center;gap:5px;padding:6px 8px 6px 16px;border:1px solid #dcc28a55;border-radius:30px;background:#10251ef5;box-shadow:0 8px 30px #0003;font-size:12px}
.chapter-status span{padding-right:8px}.chapter-status button{border:0;background:#ffffff0d;color:var(--gold);width:32px;height:32px;border-radius:50%}button:disabled{opacity:.45;cursor:default}
.network-shell{display:grid;grid-template-columns:1.5fr 1fr;gap:35px;align-items:center;margin-top:35px;padding:15px;background:radial-gradient(ellipse at 30% 50%,#2b493733,transparent 70%);border:1px solid var(--line);border-radius:12px}
.network{position:relative;aspect-ratio:1000/650;min-width:0}.network svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.network line{stroke:#dcc28a22;stroke-width:1;transition:stroke .3s,stroke-width .3s}.network line.active{stroke:#dcc28ac0;stroke-width:2}
.network-node{position:absolute;transform:translate(-50%,-50%);width:94px;height:68px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#14251e;color:var(--muted);border:1px solid #607265;border-radius:12px;z-index:2;font-size:12px}
.network-node small{color:var(--gold);font-size:9px;letter-spacing:2px}.network-node.selected{background:var(--gold);color:#10251b;border-color:var(--gold);box-shadow:0 0 26px #dcc28a25}.network-node.selected small{color:#10251b}.network-node.related{border-color:var(--gold);color:var(--white)}
.network-core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center;border-radius:50%;background:#12261ff5;width:185px;height:140px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border:1px solid #dcc28a33;pointer-events:none}.network-core small{letter-spacing:3px;color:var(--gold);font-size:10px}.network-core strong{font-size:16px}.network-core span{font-size:9px;color:var(--muted)}
.network-info{padding:22px;min-height:260px}.network-info h3{font-family:var(--font-display);font-size:29px}.network-info .btn{margin-top:22px}.network-info .tiles a{font-size:11px;padding:5px 10px;border:1px solid var(--line);border-radius:20px}.network-info .tiles a:hover{border-color:var(--gold)}
.chapter-detail{margin-top:20px}.chapter-detail summary{color:var(--gold)}.item-ledger{list-style:none;margin:12px 0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 25px}.item-ledger li{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--line);margin:0}.item-ledger p{margin:0;font-size:14px}.item-code{font-size:11px;color:var(--gold);padding-top:3px;min-width:44px}.item-ledger .caption{font-size:12px;margin-top:5px}
footer{padding-bottom:85px}
.platform-preview{margin-top:30px;background:#f3f1e8;color:#17372c;border-radius:9px;overflow:hidden;box-shadow:0 12px 35px #0002}.platform-bar{background:#e3e7dd;display:flex;justify-content:space-between;gap:15px;padding:14px 20px;border-bottom:1px solid #acbbaa}.platform-bar strong{font-size:12px;letter-spacing:2px}.platform-bar span{font-size:10px;color:#426557}.platform-body{display:grid;grid-template-columns:1fr 2fr;gap:25px;padding:25px}.platform-body aside{border-right:1px solid #bdc9bf;padding-right:20px}.platform-body h4{font-size:22px;margin:14px 0}.platform-body p{color:#466050;font-size:13px}.platform-body .tag{background:#325c48;color:white}.platform-status{color:#245e44;font-weight:bold;font-size:14px}.mock-field{display:flex;flex-direction:column;margin-bottom:14px}.mock-field small{color:#587363;font-size:11px}.mock-field strong{font-size:15px}.platform-track{border-top:1px solid #bdc9bf;display:flex;flex-wrap:wrap;gap:14px;padding:15px 25px;font-size:11px;color:#67776d}.platform-track .done{color:#146943;font-weight:bold}
@media(max-width:600px){.platform-body{grid-template-columns:1fr;padding:20px}.platform-body aside{border-right:0;border-bottom:1px solid #bdc9bf;padding-bottom:18px}.platform-bar{flex-direction:column;gap:4px}}
@media(max-width:1100px){.network-shell{grid-template-columns:1fr}.network{max-width:760px;width:100%;margin:auto}.network-info{min-height:0;border-top:1px solid var(--line)}}
@media(max-width:600px){.network-shell{padding:12px;gap:5px}.network{aspect-ratio:auto;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;padding:8px 0}.network svg,.network-core{display:none}.network-node{position:static;transform:none!important;width:100%;height:64px}.network-info{padding:18px 5px}.item-ledger{grid-template-columns:1fr}.chapter-status{bottom:10px;right:10px;font-size:11px}.contents-dialog{padding:20px}.contents-list a{gap:8px;padding:10px}.contents-list small{display:none}.dialog-top h2{font-size:25px}nav a{display:none!important}.menu-button{padding:5px 12px}}
.concept-plan{margin:34px 0 26px;border:1px solid var(--line);background:#14251e;border-radius:12px;overflow:hidden}
.concept-plan-top{display:flex;justify-content:space-between;align-items:flex-end;gap:22px;padding:22px 24px 18px;border-bottom:1px solid var(--line)}
.concept-plan-top h3{margin:6px 0 0;font-family:var(--font-display);font-size:26px;font-weight:400}
.concept-plan-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}.concept-plan-open{color:var(--gold);font-size:12px;white-space:nowrap;border-bottom:1px solid var(--gold)}
.concept-plan img{display:block;width:100%;height:auto;background:var(--bg)}
.concept-plan figcaption{padding:14px 24px 18px;color:var(--muted);font-size:12px;border-top:1px solid var(--line)}
@media(max-width:600px){.concept-plan-top{align-items:flex-start;flex-direction:column;padding:18px}.concept-plan-top h3{font-size:22px}.concept-plan-actions{justify-content:flex-start}.concept-plan{margin-inline:-2%}.concept-plan figcaption{padding:12px 18px}.concept-plan img{min-height:300px;object-fit:contain}}
@media(prefers-reduced-motion:reduce){.network line{transition:none}}

.frontage-measure{display:flex;margin:12px 0 8px;border:1px solid #8a764c;border-radius:6px;overflow:hidden;background:#f3ead4;font-size:11px;font-weight:700;text-align:center}
.frontage-measure span{display:flex;align-items:center;justify-content:center;min-height:34px;padding:5px;border-right:1px solid #8a764c}
.frontage-measure span:last-child{border-right:0}
.frontage-measure .m7{flex:7}.frontage-measure .m2{flex:2;background:#d77b65;color:#fff}.frontage-measure .m13{flex:13}
.frontage-measure-note{margin:0 0 12px;color:#694f2c;font-size:11px;text-align:center}
.site-observation{margin:30px 0;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);gap:20px;align-items:stretch}
.site-observation img{display:block;width:100%;height:100%;min-height:310px;object-fit:cover;border-radius:9px}
.site-observation article{padding:24px;border:1px solid var(--line);border-radius:9px;background:var(--card)}
.site-observation ul{padding-left:18px;color:var(--muted)}
.site-observation li{margin:8px 0}
@media(max-width:760px){.site-observation{grid-template-columns:1fr}.site-observation img{min-height:220px}.frontage-measure{font-size:10px}.frontage-measure span{padding-inline:2px}}