:root{--ink: #16242e;--ink-soft: #4a5b66;--ink-faint: #75858f;--bg: #ffffff;--bg-soft: #f4f7f8;--bg-tint: #eaf3f1;--brand: #0d6459;--brand-dark: #094a42;--brand-tint: #e3f0ed;--accent: #b4531b;--accent-tint: #fdf1e7;--danger: #b3261e;--danger-tint: #fbe9e7;--navy: #1e3a5f;--navy-tint: #e7edf5;--green: #1f6b43;--green-tint: #e6f3ec;--purple: #6a3fa0;--purple-tint: #f2ecfa;--line: #dde5e8;--line-strong: #c3d0d5;--radius: 10px;--measure: 44rem;--shadow: 0 1px 2px rgba(16, 40, 50, .06), 0 8px 24px rgba(16, 40, 50, .05)}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:Hiragino Kaku Gothic ProN,Hiragino Sans,Noto Sans JP,Yu Gothic Medium,Yu Gothic,Meiryo,system-ui,sans-serif;font-size:16.5px;line-height:1.95;font-feature-settings:"palt";text-rendering:optimizeLegibility}img{max-width:100%;height:auto}a{color:var(--brand);text-underline-offset:.18em;text-decoration-thickness:1px}a:hover{color:var(--brand-dark)}.container{width:100%;max-width:var(--measure);margin-inline:auto;padding-inline:1.15rem}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:1rem;top:.5rem;z-index:10;background:var(--brand);color:#fff;padding:.4rem .8rem;border-radius:6px}.site-header{border-bottom:1px solid var(--line);background:#fffffff0;backdrop-filter:saturate(1.4) blur(6px);position:sticky;top:0;z-index:5}.site-header .container{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.4rem 1rem;padding-block:.7rem}.site-title{display:inline-block;font-weight:700;font-size:1rem;letter-spacing:.01em;color:var(--ink);text-decoration:none}.site-header nav ul{display:flex;flex-wrap:wrap;gap:.2rem;list-style:none;margin:0;padding:0}.site-header nav a{display:inline-block;padding:.25rem .6rem;border-radius:999px;font-size:.86rem;text-decoration:none;color:var(--ink-soft)}.site-header nav a:hover{background:var(--brand-tint);color:var(--brand-dark)}main{padding-block:2rem 1rem}.breadcrumb{font-size:.8rem;color:var(--ink-soft);margin-bottom:1rem}.breadcrumb a{display:inline-block;padding-block:.4rem;color:var(--ink-soft);text-decoration:none}.breadcrumb a:hover{text-decoration:underline}.breadcrumb .sep{margin-inline:.35rem;color:var(--line-strong)}.article-head h1{font-size:clamp(1.5rem,1.15rem + 1.6vw,2rem);line-height:1.45;letter-spacing:.005em;margin:0 0 .7rem}.article-tags{display:flex;flex-wrap:wrap;gap:.4rem;margin-bottom:.7rem}.tag{display:inline-block;padding:.12rem .6rem;border-radius:999px;font-size:.76rem;font-weight:600;background:var(--brand-tint);color:var(--brand-dark)}.tag.ward{background:var(--bg-soft);color:var(--ink-soft)}.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem .9rem;font-size:.8rem;color:var(--ink-faint);padding-bottom:1.1rem;border-bottom:1px solid var(--line)}.updated-badge{display:inline-flex;align-items:center;gap:.3rem;padding:.14rem .65rem;border-radius:999px;background:var(--brand-tint);color:var(--brand-dark);font-weight:700;font-size:.78rem}.updated-badge:before{content:"✓";font-size:.72rem}.updated-badge.stale{background:var(--accent-tint);color:var(--accent)}.updated-badge.stale:before{content:"!"}.sponsored-banner{margin:1.2rem 0 0;padding:.55rem .9rem;border:1px solid #e5c07b;border-left-width:4px;background:#fdf8ec;border-radius:6px;font-size:.84rem;font-weight:600;color:#6b5008}.toc{margin:1.6rem 0 2.2rem;padding:1rem 1.2rem;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius)}.toc-title{font-size:.85rem;font-weight:700;color:var(--ink-soft);letter-spacing:.04em;margin-bottom:.4rem}.toc ol{list-style:none;margin:0;padding:0;counter-reset:toc;font-size:.9rem}.toc li{counter-increment:toc;padding:.18rem 0 .18rem 1.6rem;position:relative}.toc li:before{content:counter(toc);position:absolute;left:0;top:.35rem;width:1.15rem;height:1.15rem;display:grid;place-items:center;border-radius:4px;background:var(--brand);color:#fff;font-size:.68rem;font-weight:700;line-height:1}.toc a{text-decoration:none;color:var(--ink)}.toc a:hover{text-decoration:underline;color:var(--brand-dark)}.prose>*+*{margin-top:1.15em}.prose h2{margin-top:2.8rem;margin-bottom:1rem;padding-left:.7rem;border-left:5px solid var(--brand);font-size:1.28rem;line-height:1.5;scroll-margin-top:4.5rem}.prose h3{margin-top:2rem;margin-bottom:.6rem;font-size:1.05rem;color:var(--brand-dark);scroll-margin-top:4.5rem}.prose p{margin-block:0}.prose strong{font-weight:700;background:linear-gradient(transparent 62%,var(--brand-tint) 62%)}.prose table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:.93rem;line-height:1.75}.prose th,.prose td{padding:.62rem .85rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.prose thead th{background:var(--bg-tint);color:var(--brand-dark);font-size:.85rem;letter-spacing:.02em;white-space:nowrap}.prose tbody tr:last-child th,.prose tbody tr:last-child td{border-bottom:none}.prose tbody td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}.table-scroll{overflow-x:auto}.prose ol{list-style:none;counter-reset:step;margin:0;padding:0}.prose ol>li{counter-increment:step;position:relative;padding:0 0 0 2.5rem;margin-top:1rem}.prose ol>li:before{content:counter(step);position:absolute;left:0;top:.28rem;width:1.75rem;height:1.75rem;display:grid;place-items:center;border-radius:50%;background:var(--brand);color:#fff;font-size:.85rem;font-weight:700;line-height:1}.prose ul{margin:0;padding:0;list-style:none}.prose ul>li{position:relative;padding-left:1.5rem;margin-top:.45rem}.prose ul>li:before{content:"";position:absolute;left:.35rem;top:.85em;width:.42rem;height:.42rem;border-radius:50%;background:var(--brand)}.prose blockquote{margin:1.6rem 0;padding:1rem 1.2rem;background:var(--accent-tint);border:1px solid #f0d9c4;border-left:5px solid var(--accent);border-radius:var(--radius);font-size:.95rem}.prose blockquote>*+*{margin-top:.6rem}.prose blockquote p{margin:0}.prose blockquote strong{background:none;color:var(--accent)}.checklist{list-style:none;padding:1rem 1.2rem;margin:1.2rem 0;background:var(--brand-tint);border-radius:var(--radius)}.checklist li{padding:.28rem 0 .28rem 1.9rem;position:relative}.checklist li:before{content:"✓";position:absolute;left:.35rem;color:var(--brand);font-weight:700}.sources-section{margin-top:3.5rem;padding:1.2rem 1.35rem;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);font-size:.87rem;color:var(--ink-soft)}.sources-section h2{margin:0 0 .6rem;font-size:.95rem;color:var(--ink);border:none;padding:0}.sources-section ul{margin:0 0 .9rem;padding:0;list-style:none;word-break:break-all}.sources-section li{position:relative;padding-left:1.1rem;margin-bottom:.3rem;line-height:1.7}.sources-section li:before{content:"↗";position:absolute;left:0;color:var(--ink-faint);font-size:.8rem}.sources-section p{margin:0}.hero{padding:.5rem 0 1.8rem;border-bottom:1px solid var(--line);margin-bottom:2rem}.hero h1{font-size:clamp(1.55rem,1.2rem + 1.7vw,2.1rem);line-height:1.45;margin:0 0 .7rem}.hero .lead{margin:0;color:var(--ink-soft);font-size:1rem}.hero .pilot{display:inline-block;margin-bottom:.8rem;padding:.15rem .7rem;border-radius:999px;background:var(--brand-tint);color:var(--brand-dark);font-size:.78rem;font-weight:700}.section-title{font-size:1.1rem;margin:2.4rem 0 1rem;padding-left:.6rem;border-left:5px solid var(--brand)}.post-list{list-style:none;margin:0;padding:0;display:grid;gap:.8rem}.post-list li{border:1px solid var(--line);border-radius:var(--radius);transition:box-shadow .15s ease,border-color .15s ease}.post-list li:hover{border-color:var(--line-strong);box-shadow:var(--shadow)}.post-list a{display:block;padding:1rem 1.15rem;text-decoration:none;color:inherit}.post-list .post-cat{display:inline-block;font-size:.74rem;font-weight:700;color:var(--brand-dark);background:var(--brand-tint);border-radius:999px;padding:.1rem .55rem;margin-bottom:.4rem}.post-list .post-title{display:block;font-weight:700;font-size:1.02rem;line-height:1.6;color:var(--ink)}.post-list .post-desc{display:block;font-size:.86rem;color:var(--ink-soft);line-height:1.75;margin-top:.3rem}.post-list .post-foot{display:block;font-size:.74rem;color:var(--ink-faint);margin-top:.5rem}.empty-note{padding:1.2rem;background:var(--bg-soft);border-radius:var(--radius);color:var(--ink-soft);font-size:.92rem}.pillars{display:grid;gap:.8rem;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));margin-top:1.4rem}.pillar{padding:.95rem 1.1rem;background:var(--bg-soft);border-radius:var(--radius)}.pillar h3{margin:0 0 .3rem;font-size:.92rem;color:var(--brand-dark)}.pillar p{margin:0;font-size:.84rem;line-height:1.8;color:var(--ink-soft)}.page-body h1{font-size:clamp(1.4rem,1.15rem + 1.2vw,1.8rem);line-height:1.5;margin-bottom:1.2rem}.page-body h2{font-size:1.1rem;margin:2.2rem 0 .8rem;padding-left:.6rem;border-left:5px solid var(--brand)}.page-body table{width:100%;border-collapse:collapse;font-size:.93rem}.page-body th,.page-body td{border:1px solid var(--line);padding:.55rem .8rem;text-align:left}.page-body th{background:var(--bg-soft);white-space:nowrap}.todo-mark{background:var(--accent-tint);border:1px dashed var(--accent);border-radius:4px;padding:0 .35rem;font-size:.9em;color:var(--accent)}.site-footer{margin-top:4.5rem;padding:2rem 0 3rem;border-top:1px solid var(--line);background:var(--bg-soft);font-size:.83rem;color:var(--ink-soft)}.footer-note{margin:0 0 1.2rem;line-height:1.85}.site-footer nav ul{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem;list-style:none;margin:0 0 1.2rem;padding:0}.site-footer nav a{color:var(--ink-soft)}.copyright{margin:0;color:var(--ink-faint);font-size:.78rem}.municipality-selector{list-style:none;margin:0 0 1rem;padding:0;display:flex;flex-wrap:wrap;gap:.6rem}.municipality-btn{display:inline-flex;align-items:center;gap:.4rem;padding:.55rem 1.1rem;border-radius:999px;background:var(--brand-tint);color:var(--brand-dark);font-weight:700;font-size:.95rem;text-decoration:none;border:1px solid transparent}.municipality-btn:hover{background:var(--brand);color:#fff}.municipality-btn.is-preparing{background:var(--bg-soft);color:var(--ink-faint);cursor:default;pointer-events:none}.municipality-btn__note{font-size:.72rem;font-weight:700;padding:.05rem .4rem;border-radius:999px;background:#fff;color:var(--ink-faint)}.hub-head h1{font-size:clamp(1.55rem,1.2rem + 1.7vw,2.1rem);line-height:1.45;margin:0 0 .6rem}.hub-head .lead{margin:0;color:var(--ink-soft)}.hub-summary-bar{margin:1.1rem 0 0;padding:.7rem 1rem;background:var(--bg-tint);border-radius:var(--radius);font-size:.85rem;color:var(--ink-soft)}.hub-summary-bar strong{color:var(--brand-dark)}.hub-intro-note{margin:1.1rem 0 1.8rem;padding:.9rem 1.1rem;border:1px solid var(--line);border-radius:var(--radius);font-size:.88rem}.hub-intro-note p{margin:0 0 .4rem;color:var(--brand-dark)}.hub-intro-note ul{margin:0;padding:0;list-style:none}.hub-intro-note li{position:relative;padding-left:1.4rem;margin-top:.3rem;color:var(--ink-soft);line-height:1.7}.hub-intro-note li:before{content:"";position:absolute;left:.3rem;top:.75em;width:.4rem;height:.4rem;border-radius:50%;background:var(--brand)}.phase-nav{position:sticky;top:3.1rem;z-index:4;margin:0 -1.15rem 1.6rem;padding:.55rem 0;background:#fffffff5;backdrop-filter:saturate(1.4) blur(6px);border-bottom:1px solid var(--line);-webkit-mask-image:linear-gradient(to right,transparent,#000 1.15rem,#000 calc(100% - 1.15rem),transparent);mask-image:linear-gradient(to right,transparent,#000 1.15rem,#000 calc(100% - 1.15rem),transparent)}.phase-nav ul{display:flex;gap:.4rem;list-style:none;margin:0;padding:0 1.15rem;overflow-x:auto;scrollbar-width:none}.phase-nav ul::-webkit-scrollbar{display:none}.phase-nav a{display:inline-block;white-space:nowrap;padding:.35rem .85rem;border-radius:999px;background:var(--bg-soft);color:var(--ink-soft);font-size:.84rem;font-weight:600;text-decoration:none}.phase-nav a:hover{background:var(--brand-tint);color:var(--brand-dark)}.hub-filters{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.6rem}.filter-btn{padding:.4rem .9rem;border-radius:999px;border:1px solid var(--line-strong);background:#fff;color:var(--ink-soft);font-size:.84rem;font-weight:600;cursor:pointer}.filter-btn[aria-pressed=true]{background:var(--brand);border-color:var(--brand);color:#fff}.phase-section{margin:2.6rem 0;scroll-margin-top:6.5rem}.phase-section h2{font-size:1.22rem;margin:0 0 .4rem;padding-left:.7rem;border-left:5px solid var(--brand);scroll-margin-top:6.5rem}.phase-section__period{font-weight:400;font-size:.85rem;color:var(--ink-faint)}.phase-section__desc{margin:0 0 1.2rem;color:var(--ink-soft);font-size:.92rem}.procedure-card-list{list-style:none;margin:0;padding:0;display:grid;gap:.9rem}.procedure-card{padding:1rem 1.2rem;border:1px solid var(--line);border-radius:var(--radius)}.procedure-card[hidden]{display:none}.procedure-card__top{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;margin-bottom:.5rem}.procedure-card__name{margin:0 0 .35rem;font-size:1.05rem;display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}.procedure-card__name a{color:var(--ink);text-decoration:none}.procedure-card--linked{position:relative;transition:box-shadow .15s ease,border-color .15s ease}.procedure-card--linked:hover{border-color:var(--line-strong);box-shadow:var(--shadow)}.procedure-card--linked .procedure-card__link:after{content:"";position:absolute;inset:0}.procedure-card--linked .procedure-card__link:focus-visible{outline:none}.procedure-card--linked .procedure-card__link:focus-visible:after{outline:2px solid var(--brand-dark);outline-offset:3px;border-radius:var(--radius)}.procedure-card__name a:hover{color:var(--brand-dark);text-decoration:underline}.procedure-card__summary{margin:0;color:var(--ink-soft);font-size:.9rem;line-height:1.8}.procedure-card__audience-note{margin:.4rem 0 0;font-size:.82rem;color:var(--ink-faint)}.procedure-card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem .8rem;margin-top:.7rem;font-size:.78rem;color:var(--ink-faint)}.procedure-card__official{display:inline-block;margin-top:.6rem;font-size:.82rem}.deadline-badge{display:inline-flex;align-items:center;gap:.3rem;padding:.16rem .65rem;border-radius:999px;font-size:.78rem;font-weight:700}.deadline-badge--critical{background:var(--danger-tint);color:var(--danger)}.deadline-badge--warning{background:var(--accent-tint);color:var(--accent)}.deadline-badge--none{background:var(--bg-soft);color:var(--ink-faint)}.deadline-badge__icon{font-size:.8em}.audience-badge{display:inline-block;padding:.14rem .6rem;border-radius:999px;background:var(--bg-soft);color:var(--ink-soft);font-size:.74rem;font-weight:600}.prep-badge{display:inline-block;padding:.1rem .55rem;border-radius:999px;background:var(--bg-soft);color:var(--ink-faint);font-size:.72rem;font-weight:700}.kind-badge{display:inline-block;padding:.08rem .5rem;border-radius:999px;background:var(--bg-soft);font-weight:600}.layer-badge{display:inline-block;padding:.1rem .6rem;border-radius:999px;font-size:.82rem;font-weight:700}.layer-badge--national{background:var(--navy-tint);color:var(--navy)}.layer-badge--tokyo{background:var(--green-tint);color:var(--green)}.layer-badge--municipal{background:var(--brand-tint);color:var(--brand-dark)}.phase-section--planned{padding:1rem 1.2rem;background:var(--bg-soft);border-radius:var(--radius)}.phase-section--planned h2{border:none;padding:0;font-size:1rem;color:var(--ink-faint)}.planned-phase-list{list-style:none;margin:.6rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:.6rem}.planned-phase-list li{padding:.35rem .8rem;border-radius:999px;background:#fff;border:1px dashed var(--line-strong);font-size:.8rem;color:var(--ink-faint)}.planned-phase-list__period{margin-left:.4rem;font-size:.72rem}.print-btn{display:inline-block;margin-top:2rem;padding:.5rem 1.1rem;border-radius:999px;border:1px solid var(--line-strong);background:#fff;color:var(--ink-soft);font-size:.85rem;cursor:pointer}.hub-back-note{margin-top:2rem;font-size:.9rem}.key-facts-box{margin:1.4rem 0 0;padding:1rem 1.2rem;background:var(--bg-tint);border-radius:var(--radius)}.key-facts-box__row{display:grid;grid-template-columns:5.5rem 1fr;gap:.4rem .8rem;padding:.5rem 0;border-bottom:1px solid rgba(16,40,50,.08)}.key-facts-box__row:last-child{border-bottom:none}.key-facts-box__row dt{font-weight:700;font-size:.85rem;color:var(--brand-dark)}.key-facts-box__row dd{margin:0;font-size:.92rem}@media(max-width:26rem){.key-facts-box__row{grid-template-columns:1fr;gap:.15rem}}@media(max-width:26rem){.site-header .container{row-gap:.1rem}.site-header nav ul{margin-inline-start:-.6rem}}.prev-next-nav{display:grid;grid-template-columns:1fr 1fr;gap:.8rem;margin-top:2.4rem}.prev-next-nav__item{display:block;padding:.8rem 1rem;border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:inherit}.prev-next-nav__item.is-empty{border-style:dashed;border-color:var(--line)}.prev-next-nav__item--next{text-align:right}.prev-next-nav__label{display:block;font-size:.75rem;color:var(--ink-faint);margin-bottom:.25rem}.prev-next-nav__name{display:block;font-weight:700;font-size:.92rem;color:var(--ink)}@media(max-width:26rem){.prev-next-nav{grid-template-columns:1fr}.prev-next-nav__item--next{text-align:left}}@media print{.site-header,.site-footer,.toc,.breadcrumb,.phase-nav,.hub-filters,.print-btn{display:none}body{font-size:11pt}}.hub-deadline-overview{margin:2rem 0;padding:1.25rem 1.25rem 1rem;border:1px solid var(--line);border-left:4px solid var(--danger);border-radius:var(--radius);background:var(--danger-tint)}.hub-deadline-overview h2{margin:0 0 .35rem;font-size:1.05rem;color:var(--danger)}.hub-deadline-overview__lead{margin:0 0 .85rem;font-size:.9rem;color:var(--ink)}.hub-deadline-overview__list{margin:0;padding-left:1.4rem;display:grid;gap:.7rem}.hub-deadline-overview__list li{line-height:1.5}.hub-deadline-overview__name{display:block;font-weight:700}.hub-deadline-overview__ext{font-weight:400;font-size:.8rem}.hub-deadline-overview__deadline{display:block;font-size:.85rem;color:var(--ink-soft)}.hub-pillars{margin:2rem 0;padding:1.1rem 1.25rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-soft)}.hub-pillars h2{margin:0 0 .75rem;font-size:1.05rem}.hub-pillars__lead{margin:-.35rem 0 .8rem;font-size:.9rem;color:var(--ink-soft)}.hub-pillars__list{margin:0;padding:0;list-style:none;display:grid;gap:.85rem}.hub-pillars__list a{font-weight:700}.hub-pillars__desc{display:block;margin-top:.2rem;font-size:.85rem;color:var(--ink-soft);line-height:1.5}.hub-filter-empty{margin:1.5rem 0;padding:1rem;border:1px dashed var(--line-strong);border-radius:var(--radius);text-align:center;color:var(--ink-soft)}.unconfirmed-badge{display:inline-block;padding:.1rem .5rem;border:1px dashed var(--purple);border-radius:999px;background:var(--purple-tint);color:var(--purple);font-size:.75rem;font-weight:700;white-space:nowrap}.unconfirmed-note{margin:1rem 0;padding:.9rem 1rem;border:1px dashed var(--purple);border-radius:var(--radius);background:var(--purple-tint)}.unconfirmed-note__head{margin:0 0 .5rem;font-size:.9rem;display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}.unconfirmed-note ul{margin:0;padding-left:1.3rem;font-size:.88rem;color:var(--ink-soft)}.external-badge{display:inline-block;margin-left:.5rem;padding:.1rem .5rem;border:1px solid var(--line-strong);border-radius:999px;background:var(--bg-soft);color:var(--ink-soft);font-size:.75rem;font-weight:700;white-space:nowrap}.disclaimer-note{margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--line);font-size:.85rem;color:var(--ink-soft)}
