:root{--ink:#263b3d;--muted:#607476;--green:#2e6d60;--pale:#e8f2ed;--cream:#faf9f4;--line:#dce6df;--gold:#d6a954}*{box-sizing:border-box}body{margin:0;color:var(--ink);font-family:"Yu Gothic",Meiryo,sans-serif;line-height:1.8}a{color:inherit}.wrap{width:min(1160px,calc(100% - 36px));margin:auto}.topline{background:var(--green);color:white;font-size:.8rem}.topline .wrap{display:flex;justify-content:flex-end;padding:6px 0}.headrow{min-height:78px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-size:1.25rem;font-weight:bold;color:var(--green)}.brand-logo{display:block;width:min(190px,52vw);height:auto;max-height:48px;object-fit:contain;flex:0 0 auto}.brand-text{display:grid;line-height:1.3}.brand-text strong{font-weight:700}@media(max-width:600px){.brand-logo{width:min(160px,52vw);max-height:40px}.brand{gap:8px}}.brand small{display:block;color:var(--muted);font-size:.72rem;font-weight:normal}.nav{border-block:1px solid var(--line);position:relative;z-index:5}.navroot{display:flex;justify-content:space-between;list-style:none;margin:0;padding:0}.navitem{display:flex;align-items:center;min-height:52px}.navitem>a{padding:0 8px;text-decoration:none;font-size:.86rem}.navitem a:hover{color:var(--green)}details{position:relative}summary{cursor:pointer;color:var(--green);padding:4px 8px;list-style:none;font-size:0}summary::-webkit-details-marker{display:none}summary::before{content:"▶";font-size:.82rem}details[open]>summary::before{content:"▼"}details ul{position:absolute;top:100%;left:0;min-width:220px;max-height:70vh;overflow:auto;background:white;border:1px solid var(--line);box-shadow:0 10px 24px #2342;padding:8px;list-style:none;margin:0}details li{list-style:none}details .navitem{min-height:40px}details .navitem>a{flex:1}.hero{background:linear-gradient(110deg,#eef5ef,#f7f5e9)}.hero .wrap{min-height:370px;display:grid;grid-template-columns:1.1fr .9fr;align-items:center;padding:34px 0}.eyebrow{color:var(--green);font-size:.8rem;letter-spacing:.14em;font-weight:bold}.hero h1{font-size:clamp(2.1rem,4vw,3.2rem);line-height:1.35;margin:10px 0}.hero p,.content p{color:#52686a}.btn{display:inline-block;background:var(--green);color:white;text-decoration:none;padding:10px 18px;border-radius:999px}.art{margin:0;text-align:center}.art img{display:block;width:min(100%,480px);aspect-ratio:4/3;object-fit:cover;object-position:center;border:5px solid #ffffffd9;border-radius:18px;box-shadow:0 16px 38px #263b3d26}.art figcaption{margin-top:8px;color:#52686a;font-size:.82rem}.section{padding:50px 0}.soft{background:var(--cream)}h2{font-size:1.7rem}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.card{padding:18px;border:1px solid var(--line);border-radius:14px;background:white;text-decoration:none}.card h3{margin:0 0 5px}.card p{margin:0;color:var(--muted);font-size:.9rem}.card span{display:block;text-align:right;color:var(--green)}.pagehero{background:var(--pale);padding:26px 0}.crumb{font-size:.82rem;color:var(--muted)}.pagehero h1{margin:4px 0;font-size:1.9rem;display:flex;align-items:center;justify-content:space-between;gap:18px}.page-mascot{display:block;width:58px;height:58px;object-fit:contain;flex:0 0 auto;border-radius:7px}@media(max-width:600px){.pagehero h1{gap:10px}.page-mascot{width:44px;height:44px}}.layout{display:grid;grid-template-columns:235px 1fr;gap:40px;padding:40px 0 70px}.side{border:1px solid var(--line);border-radius:12px;padding:14px;height:max-content}.side a{display:block;border-top:1px solid var(--line);padding:7px 2px;text-decoration:none;font-size:.9rem}.side .active{color:var(--green);font-weight:bold}.placeholder{background:#f7f9f6;border-left:4px solid var(--gold);padding:15px;margin:20px 0}.facts{border-collapse:collapse;width:100%}.facts th,.facts td{text-align:left;padding:10px;border-bottom:1px solid var(--line)}.facts th{background:#f5f8f5;width:120px}.foot{background:#263b3d;color:white;padding:32px 0}.footnav{display:flex;flex-wrap:wrap;gap:8px 20px}.foot a{color:#e5efe9}.toggle{display:none}@media(max-width:800px){.navroot{flex-wrap:wrap;justify-content:flex-start}.cards{grid-template-columns:1fr 1fr}}@media(max-width:600px){.toggle{display:block}.nav{display:none}.nav.show{display:block}.navroot{display:block}.navitem{border-top:1px solid var(--line)}details ul{position:static;box-shadow:none;border:0}.hero .wrap{grid-template-columns:1fr}.art{max-width:540px;margin:20px auto 0}.layout{grid-template-columns:1fr;gap:20px}.side{order:2}.cards{grid-template-columns:1fr}.section{padding:38px 0}}

.about-photo{margin:24px 0 30px;max-width:520px}.about-photo img{display:block;width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:16px;box-shadow:0 12px 30px #263b3d22}.about-photo figcaption{margin-top:8px;color:#607476;font-size:.84rem}

.sdgs-goals{margin-top:28px}.sdgs-goals>h3{margin:0 0 14px}.sdgs-goal-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.sdgs-goal-card{display:flex;align-items:center;gap:14px;padding:16px;border:1px solid var(--line);border-radius:14px;background:#fff}.sdgs-goal-card img{width:112px;height:112px;flex:0 0 112px;object-fit:cover;border-radius:8px}.sdgs-goal-card h4{margin:0 0 5px;font-size:1rem;line-height:1.5}.sdgs-goal-card p{margin:0;color:var(--muted);font-size:.88rem}.sdgs-alukuma{display:flex;align-items:center;gap:24px;margin:28px 0 0;padding:20px;background:var(--cream);border-radius:16px}.sdgs-alukuma img{display:block;width:min(34%,260px);height:auto;flex:0 0 auto}.sdgs-alukuma figcaption{color:var(--muted);font-weight:600}@media(max-width:700px){.sdgs-goal-grid{grid-template-columns:1fr}.sdgs-goal-card img{width:96px;height:96px;flex-basis:96px}.sdgs-alukuma{flex-direction:column;align-items:flex-start;gap:10px}.sdgs-alukuma img{width:min(70%,260px)}}

.about-section{margin:32px 0}.about-section>h3{margin:0 0 14px;padding-left:12px;border-left:4px solid var(--green)}.about-photo{margin:24px 0 30px;max-width:520px}.about-photo img{display:block;width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:16px;box-shadow:0 12px 30px #263b3d22}.about-photo figcaption{margin-top:8px;color:var(--muted);font-size:.84rem}.about-timeline{margin:0;border-top:1px solid var(--line)}.about-timeline>div{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:13px 10px;border-bottom:1px solid var(--line)}.about-timeline dt{font-weight:700;color:var(--green)}.about-timeline dd{margin:0}.about-timeline ul{margin:0;padding-left:1.2em}.chair-message{padding:20px 24px;background:var(--cream);border-radius:14px;display:flow-root}.chair-portrait{width:95px;margin:18px 0 8px auto;text-align:center}.chair-portrait img{display:block;width:100%;height:auto;max-height:130px;object-fit:contain;object-position:center bottom;border-radius:8px}.chair-portrait figcaption{font-size:.72rem;color:var(--muted);margin-top:3px}.chair-message p:first-child{margin-top:0}.chair-sign{text-align:right}.about-table-wrap{overflow-x:auto}.about-sites{min-width:660px}.about-sites th:first-child{width:30%}.about-map iframe{display:block;width:100%;height:390px;border:0;border-radius:12px}@media(max-width:600px){.about-timeline>div{grid-template-columns:78px 1fr;gap:10px;padding:11px 4px}.chair-message{padding:16px}.about-map iframe{height:320px}}


.page-photo{margin:22px 0 28px;max-width:760px}.page-photo img{display:block;width:100%;max-height:430px;aspect-ratio:16/9;object-fit:cover;object-position:center;border-radius:16px;box-shadow:0 12px 30px #263b3d20}.page-photo figcaption{margin-top:7px;color:var(--muted);font-size:.82rem}.page-details{margin:24px 0;padding:18px 20px;background:var(--cream);border-radius:14px}.page-details h3{margin-top:0;color:var(--green)}.news-list{display:grid;gap:10px}.news-list article{display:grid;grid-template-columns:105px 1fr auto;align-items:center;gap:14px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:12px}.news-list time{font-size:.84rem;color:var(--muted)}.news-list a{font-size:.86rem;color:var(--green);font-weight:700}@media(max-width:600px){.page-photo img{max-height:320px}.news-list article{grid-template-columns:1fr;gap:4px}}



.documents-section{padding:20px}.documents-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:18px}.document-card{padding:18px 20px;border:1px solid var(--line);border-radius:14px;background:#fff}.document-label{display:inline-block;color:var(--green);font-size:.78rem;font-weight:700;letter-spacing:.04em}.document-card h4{margin:6px 0 4px;font-size:1.15rem}.document-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:15px}.document-actions a{display:inline-block;padding:8px 13px;border-radius:999px;text-decoration:none;font-size:.86rem;font-weight:700}.document-actions a:first-child{background:var(--green);color:#fff}.document-actions a:last-child{border:1px solid var(--line);color:var(--green)}@media(max-width:600px){.documents-grid{grid-template-columns:1fr}}





.mascot-intro{background:var(--pale)}.mascot-intro-inner{display:grid;grid-template-columns:1fr 160px;align-items:center;gap:32px}.mascot-intro h2{margin:4px 0 12px}.mascot-intro p{margin:8px 0;color:var(--muted)}.mascot-intro figure{margin:0;text-align:center}.mascot-intro img{display:block;width:140px;height:140px;object-fit:contain;border-radius:10px;margin:auto}@media(max-width:600px){.mascot-intro-inner{grid-template-columns:1fr 96px;gap:14px}.mascot-intro img{width:90px;height:90px}}


.hero-mascot{display:flex;align-items:center;gap:10px;max-width:390px;margin:14px 0 0}.hero-mascot img{width:52px;height:52px;object-fit:contain;border-radius:7px;flex:0 0 auto}.hero-mascot p{margin:0;font-size:.76rem;line-height:1.55;color:var(--muted)}@media(max-width:600px){.hero-mascot img{width:44px;height:44px}.hero-mascot p{font-size:.7rem}}