:root{--accent:#337a73;--dark:#19364c;--pale:#eff6f3;--paper:#f8faf9;--muted:#596570;--line:#dce7e4;--surface:#fff;--shadow:0 22px 50px #142d3810}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:#1a2b33;font:15px/1.8 -apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,select,input,textarea{font:inherit}a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}img{display:block;max-width:100%}.wrap{width:min(1120px,calc(100% - 44px));margin:auto}.fine{font-size:12px;color:var(--muted)}.muted{color:var(--muted)}.eyebrow{text-transform:uppercase;letter-spacing:.15em;font-weight:800;font-size:11px;color:var(--accent);display:block}.accent{color:var(--accent)}.top{position:sticky;top:0;z-index:10;background:#fffffff5;border-bottom:1px solid var(--line);backdrop-filter:blur(15px)}.nav-in{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--dark);font-size:20px;font-weight:850;letter-spacing:-.035em;white-space:nowrap}.brand-mark{background:var(--dark);color:white;display:inline-grid;place-items:center;width:40px;height:40px;border-radius:13px;font-size:21px;font-style:normal}.nav-links{display:flex;gap:8px;align-items:center}.nav-links a{padding:9px 12px;border-radius:9px;white-space:nowrap;font-weight:750;font-size:13px}.nav-links a:hover,.nav-links a[aria-current=page]{background:var(--pale);color:var(--accent)}.nav-links a.n-primary{background:var(--dark);color:white}.ad-note{background:var(--pale);color:var(--muted);font-size:11px;padding:7px 0;border-bottom:1px solid var(--line)}
.hero{background:linear-gradient(132deg,var(--pale) 0,#fff 73%);padding:62px 0 64px}.hero-grid{display:grid;grid-template-columns:1fr .95fr;gap:52px;align-items:center}.hero h1{color:var(--dark);font-size:clamp(35px,5vw,59px);line-height:1.36;letter-spacing:-.06em;margin:10px 0 16px}.hero-copy{font-size:16px;line-height:1.85;color:#51616c;max-width:510px}.hero-photo{height:420px;position:relative;border-radius:26px;overflow:hidden;background:#d8e7e5;box-shadow:var(--shadow)}.hero-photo img{object-fit:cover;width:100%;height:100%}.image-tag{position:absolute;bottom:17px;left:17px;background:#ffffffea;color:var(--dark);font-size:12px;font-weight:800;border-radius:12px;padding:10px 14px;box-shadow:0 7px 20px #253d4025}.btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;background:var(--dark);color:#fff;padding:13px 23px;font-weight:800;border:1px solid var(--dark);border-radius:12px;cursor:pointer;transition:transform .15s,box-shadow .15s;max-width:100%;text-align:center}.btn:hover{transform:translateY(-2px);box-shadow:0 10px 20px #12352a20}.btn.outline{background:#fff;color:var(--dark)}.btn.accent-btn{background:var(--accent);border-color:var(--accent)}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:25px}.micro{font-size:12px;color:var(--muted);margin-top:15px}.quick-steps{display:flex;gap:10px;flex-wrap:wrap;margin:23px 0 0}.quick-steps span{font-size:12px;font-weight:800;padding:7px 10px;background:#ffffffbd;border:1px solid var(--line);border-radius:50px;color:var(--dark)}
.section{padding:72px 0}.section.alt{background:#fff}.section-top{margin-bottom:26px}.section h2{font-size:clamp(25px,3.6vw,38px);color:var(--dark);letter-spacing:-.055em;line-height:1.45;margin:7px 0 8px}.lead{color:var(--muted);max-width:680px;margin:0}.paths{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.path{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 10px 25px #1b3a3908;transition:transform .18s,border-color .18s}.path:hover{transform:translateY(-4px);border-color:var(--accent)}.path-image{height:147px;display:flex;align-items:center;justify-content:center;background:var(--pale);position:relative;overflow:hidden}.path-image img{width:100%;height:100%;object-fit:cover}.path-image .large-icon{position:absolute;right:14px;bottom:10px;font-size:36px;background:#fff;line-height:1;border-radius:12px;padding:9px;box-shadow:0 5px 20px #193d3d12}.path-body{padding:20px;flex:1;display:flex;flex-direction:column}.path-num{font-weight:800;font-size:11px;color:var(--accent);letter-spacing:.09em}.path h3{font-size:19px;line-height:1.45;letter-spacing:-.035em;color:var(--dark);margin:8px 0}.path p{font-size:13px;color:var(--muted);margin:0 0 18px}.path-link{margin-top:auto;color:var(--accent);font-weight:800;font-size:13px}
.map-layout{display:grid;grid-template-columns:.95fr 1fr;gap:40px;align-items:center}.graph-card{border-radius:22px;background:var(--pale);padding:22px;border:1px solid var(--line);box-shadow:var(--shadow)}.graph-card img{width:100%;height:auto;border-radius:13px}.graph-label{font-size:11px;color:var(--muted);text-align:center;margin-top:8px}.topic-rows{display:grid;gap:10px}.topic-row{background:#fff;border:1px solid var(--line);padding:15px 18px;border-radius:13px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:12px}.topic-row strong{color:var(--dark);font-size:14px}.topic-row span{font-size:12px;color:var(--muted);display:block}.topic-row svg{width:19px;color:var(--accent)}.topic-row:hover{background:var(--pale)}.trust{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.trust article{background:var(--pale);padding:22px;border-radius:16px}.trust strong{display:block;color:var(--dark);font-size:16px}.trust p{font-size:13px;color:var(--muted);margin:7px 0 0}
.pagehead{padding:50px 0;background:var(--pale);border-bottom:1px solid var(--line)}.pagehead h1{font-size:clamp(31px,4vw,45px);letter-spacing:-.05em;color:var(--dark);line-height:1.35;margin:11px 0 8px}.pagehead p{font-size:15px;color:var(--muted);margin:0;max-width:760px}.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:15px}.breadcrumb a{text-decoration:underline;text-underline-offset:3px}.panel{background:#fff;border-radius:22px;border:1px solid var(--line);padding:32px}.content{padding:38px 0 75px}.content-grid{display:grid;grid-template-columns:minmax(0,740px) minmax(220px,1fr);gap:25px;align-items:start}.article h2{font-size:23px;line-height:1.45;letter-spacing:-.03em;color:var(--dark);margin:36px 0 14px;scroll-margin-top:100px}.article p{margin:11px 0 18px;line-height:1.9}.article .intro{font-size:17px;font-weight:600;color:#284653}.article .hero-figure{margin:18px 0 26px}.article .hero-figure img{width:100%;max-height:390px;object-fit:contain;border-radius:17px;background:var(--pale)}.figure-caption{font-size:11px!important;color:var(--muted);margin-top:5px!important}.summary-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.summary-cards>div{background:var(--pale);border-radius:13px;padding:16px;min-height:105px}.summary-cards strong{font-size:11px;color:var(--accent);display:block;margin-bottom:6px}.summary-cards span{font-size:13px;color:var(--dark);font-weight:800;line-height:1.5}.section-card{border-top:1px solid var(--line);margin-top:25px}.section-card .short{font-size:15px}.section-card details{background:#f8faf9;padding:12px 15px;border-radius:10px;margin-bottom:18px;border:1px solid var(--line)}.section-card details summary{cursor:pointer;font-weight:800;color:var(--accent);font-size:13px}.section-card details p{font-size:13px;color:var(--muted);margin:7px 0}.chips{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}.chip{padding:6px 10px;background:var(--pale);border-radius:30px;color:var(--dark);font-size:12px;font-weight:800}.tip{border-left:4px solid var(--accent);background:var(--pale);padding:12px 15px;border-radius:0 10px 10px 0;font-size:13px;margin:17px 0}.sticky{position:sticky;top:95px}.sticky strong{display:block;color:var(--dark);margin-bottom:14px}.toc{display:grid;gap:8px}.toc a{font-size:13px;color:var(--muted);line-height:1.5;padding:7px 0;border-bottom:1px dashed var(--line)}.toc a:hover{color:var(--accent)}.sidebar-link{display:block;margin-top:20px;font-size:13px;font-weight:800;color:var(--accent)}.related{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.related a{border:1px solid var(--line);border-radius:13px;padding:14px;display:flex;gap:9px;align-items:center;font-size:13px;font-weight:800}.related a:hover{background:var(--pale)}.related img{width:72px;height:55px;object-fit:cover;border-radius:8px}
.promptbox{background:#102c3f;color:#e6f4f6;padding:20px;border-radius:16px;margin-top:18px}.promptbox pre{font-family:inherit;font-size:13px;line-height:1.85;white-space:pre-wrap;word-break:break-word;margin:10px 0}.promptbox button{color:#102c3f;background:#fff;border:0;padding:9px 15px;border-radius:9px;font-weight:800;cursor:pointer}.checkline{display:flex;gap:10px;align-items:flex-start;border-bottom:1px solid var(--line);padding:12px 0;font-size:14px}.checkline input{width:18px;height:18px;accent-color:var(--accent);margin-top:4px;flex-shrink:0}.checkline:has(input:checked){color:var(--accent)}.progress{font-size:12px;color:var(--muted);margin:13px 0}
.grid-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.grid-list .path-image{height:128px}.scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:11px}.scenario{background:#fff;border:1px solid var(--line);border-radius:13px;padding:15px;text-align:left;cursor:pointer;min-height:98px}.scenario:hover,.scenario[aria-pressed=true]{border-color:var(--accent);background:var(--pale)}.scenario strong{display:block;color:var(--dark);font-size:14px}.scenario small{color:var(--muted);display:block;margin-top:6px;line-height:1.5}.result{background:var(--pale);border:1px solid var(--line);border-radius:17px;padding:22px;margin-top:20px}.result[hidden]{display:none}.result h2{font-size:20px;color:var(--dark)}.result ol{padding-left:21px;font-size:14px}.result li{margin-bottom:9px}.input{border:1px solid #b7c6ca;background:#fff;padding:13px 15px;border-radius:10px;width:100%;font:inherit;color:var(--dark)}.label{font-size:13px;font-weight:800;display:block;color:var(--dark);margin:18px 0 7px}.scroll{overflow-x:auto;border-radius:14px;border:1px solid var(--line);margin:20px 0}.compare{width:100%;border-collapse:collapse;min-width:560px;font-size:13px}.compare th,.compare td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}.compare th{background:var(--pale);color:var(--dark)}.compare tr:last-child td{border-bottom:0}.references{font-size:12px;color:var(--muted)}.references a{text-decoration:underline;text-underline-offset:3px}.references li{margin-bottom:7px}.footer{background:var(--dark);padding:45px 0 28px;color:#dce9f0}.footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:35px}.footer-links{display:flex;gap:16px;flex-wrap:wrap;font-size:13px}.footer .small{font-size:12px;color:#c6d5de;margin-top:22px}
@media(max-width:950px){.hero-grid{gap:24px}.map-layout{gap:20px}.content-grid{grid-template-columns:1fr}.sticky{position:static;order:-1}.trust,.paths{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){body{font-size:14px}.wrap{width:calc(100% - 32px)}.nav-in{display:block;padding:12px 0 2px}.nav-links{overflow-x:auto;padding:7px 0;scrollbar-width:thin}.nav-links a{font-size:12px;padding:7px 10px;flex-shrink:0}.brand{font-size:18px}.hero{padding:30px 0 40px}.hero-grid{grid-template-columns:1fr;gap:20px}.hero-photo{height:236px;order:-1}.hero h1{font-size:36px}.hero-copy{font-size:14px}.hero .actions .btn{flex:1;min-width:170px}.section{padding:43px 0}.paths,.trust,.map-layout,.related,.grid-list{grid-template-columns:1fr}.path-image{height:145px}.pagehead{padding:28px 0}.content{padding:20px 0 50px}.panel{padding:22px 17px}.summary-cards{grid-template-columns:1fr}.summary-cards>div{min-height:0;padding:13px}.article h2{font-size:20px}.scenario-grid{grid-template-columns:1fr}.grid-list .path-image{height:115px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}