:root{--navy:#17324d;--blue:#345f82;--red:#b44a32;--paper:#fffdf8;--line:#d9d5cc;--muted:#617084;--bg:#f3f5f7}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:#26313d;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;line-height:1.75}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}img{display:block;max-width:100%;height:auto}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:12px;top:12px;z-index:100;background:#fff;padding:10px 14px;border:2px solid var(--navy)}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);border-bottom:1px solid #dfe3e7;backdrop-filter:blur(10px)}.site-header-inner{width:min(1200px,calc(100% - 32px));min-height:70px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;color:var(--navy);font-size:1.18rem;font-weight:700;letter-spacing:.05em;white-space:nowrap}.site-nav{display:flex;align-items:center;gap:4px}.site-nav a{color:#425265;padding:8px 12px;border-radius:8px;font-size:.9rem;white-space:nowrap}.site-nav a[aria-current="page"]{color:var(--navy);background:#edf3f6;font-weight:700}.page{width:min(1200px,calc(100% - 32px));margin-inline:auto}.home-hero{position:relative;max-width:1440px;margin:auto;background:#dce8ee;overflow:hidden}.home-hero img{width:100%;height:min(58vw,680px);min-height:380px;object-fit:cover}.home-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,37,56,.73),rgba(15,37,56,.08) 68%)}.hero-copy{position:absolute;z-index:1;left:max(24px,calc((100% - 1168px)/2));top:50%;transform:translateY(-50%);color:#fff;max-width:520px}.eyebrow{margin:0 0 6px;font-size:.72rem;letter-spacing:.15em;font-weight:800;color:var(--red)}.hero-copy .eyebrow{color:#eab49f}.hero-copy h1{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:clamp(2.7rem,8vw,5.7rem);line-height:1.12;letter-spacing:.06em;margin:.12em 0 .28em;text-shadow:0 2px 22px rgba(0,0,0,.2)}.hero-copy>p:last-child{font-size:clamp(.96rem,2vw,1.13rem);margin:0}.portal-section,.latest-section,.news-section{padding:72px 0 8px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:22px}.section-heading h2{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;color:var(--navy);font-size:clamp(1.8rem,4vw,2.65rem);margin:0;line-height:1.3}.portal-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:16px}.portal-card{display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);border-radius:14px;overflow:hidden;color:inherit;box-shadow:0 7px 22px rgba(27,48,67,.07);transition:transform .18s,box-shadow .18s}.portal-card:hover{text-decoration:none;transform:translateY(-3px);box-shadow:0 11px 28px rgba(27,48,67,.12)}.portal-card img{width:100%;aspect-ratio:1.65/1;object-fit:cover}.portal-card>div{padding:18px}.portal-card span{display:inline-block;color:var(--red);font-weight:700;font-size:.78rem;margin-bottom:5px}.portal-card h3{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;color:var(--navy);font-size:1.65rem;margin:0}.portal-card p{color:var(--muted);font-size:.9rem;margin:.35em 0 .9em}.portal-card strong{color:var(--blue);font-size:.86rem}.portal-wide{grid-row:span 2}.portal-wide img{aspect-ratio:2.3/1}.latest-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.latest-card{display:block;background:#fff;border-top:3px solid var(--navy);padding:18px;border-radius:0 0 10px 10px;color:inherit;box-shadow:0 5px 18px rgba(27,48,67,.06)}.latest-card:hover{text-decoration:none;background:var(--paper)}.latest-card>div{display:flex;justify-content:space-between;gap:8px;font-size:.76rem;color:var(--muted)}.latest-no{font-weight:800;color:var(--red)}.latest-card h3{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;color:var(--navy);font-size:1.08rem;line-height:1.55;margin:14px 0 8px}.latest-card p{font-size:.82rem;color:var(--muted);margin:0}.news-section{padding-bottom:72px}.news-list{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:8px 22px}.news-list p{display:grid;grid-template-columns:110px 1fr;gap:18px;margin:0;padding:13px 0;border-bottom:1px solid #ebe7dd}.news-list p:last-child{border-bottom:0}.news-list time{color:var(--blue);font-variant-numeric:tabular-nums;font-size:.86rem}footer{text-align:center;color:var(--muted);font-size:.85rem;padding:30px 0 44px}.content{background:var(--paper);border:1px solid var(--line);border-radius:16px;margin:26px 0;padding:clamp(18px,4vw,40px);overflow-wrap:anywhere}.content table{max-width:100%;display:block;overflow-x:auto;border-collapse:collapse}.content pre{max-width:100%;overflow:auto}.content h1,.content h2,.content h3{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;color:var(--navy)}@media(max-width:900px){.portal-grid{grid-template-columns:1fr 1fr}.portal-wide{grid-column:1/-1;grid-row:auto}.latest-grid{grid-template-columns:1fr 1fr}.site-header-inner{display:block;padding:10px 0}.site-nav{margin-top:6px;overflow-x:auto;padding-bottom:2px}.site-nav a{padding:6px 10px}.home-hero img{height:520px}.home-hero:after{background:linear-gradient(90deg,rgba(15,37,56,.72),rgba(15,37,56,.15))}}@media(max-width:560px){.page{width:min(100% - 20px,1200px)}.site-header-inner{width:calc(100% - 20px)}.brand{font-size:1.05rem}.site-nav{gap:0}.site-nav a{font-size:.82rem}.home-hero img{height:440px;min-height:0}.home-hero:after{background:linear-gradient(90deg,rgba(15,37,56,.73),rgba(15,37,56,.25))}.hero-copy{left:20px;right:20px;top:auto;bottom:36px;transform:none}.hero-copy h1{font-size:3rem}.portal-section,.latest-section,.news-section{padding-top:48px}.portal-grid,.latest-grid{grid-template-columns:1fr}.portal-wide{grid-column:auto}.portal-wide img,.portal-card img{aspect-ratio:1.9/1}.news-list{padding:6px 16px}.news-list p{grid-template-columns:1fr;gap:2px}}


/* 2026-09: トップ画像は横長の原画全体を表示し、画像内タイトルを切らない */
.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.home-hero{line-height:0;background:#d8e6e8}
.home-hero img{width:100%;height:auto!important;min-height:0!important;object-fit:contain}
.home-hero:after{display:none}
.portal-grid-two{grid-template-columns:repeat(2,minmax(0,1fr));max-width:940px}
.portal-grid-two .portal-card{display:grid;grid-template-columns:minmax(170px,42%) 1fr}
.portal-grid-two .portal-card img{height:100%;aspect-ratio:auto;object-fit:cover}
@media(max-width:700px){.portal-grid-two{grid-template-columns:1fr}.portal-grid-two .portal-card{grid-template-columns:1fr}.portal-grid-two .portal-card img{width:100%;height:auto;aspect-ratio:1.9/1}}

/* ver1.3: portal / hero mobile robustness */
.portal-grid-four{grid-template-columns:repeat(2,minmax(0,1fr));max-width:1100px}
.portal-grid-four .portal-card{display:grid;grid-template-columns:minmax(150px,40%) 1fr}
.portal-grid-four .portal-card img{width:100%;height:100%;min-height:190px;aspect-ratio:auto;object-fit:cover}
.home-hero img{visibility:visible!important;opacity:1!important}
@media(max-width:460px){.portal-grid-four .portal-card{grid-template-columns:1fr}.portal-grid-four .portal-card img{height:auto;min-height:0;aspect-ratio:1.9/1}}

/* ver1.4: uploaded home.jpg is used as-is. No masking/patch overlay. */
.home-hero{background:#fff;overflow:hidden}
.home-hero img{display:block;width:100%;height:auto!important;min-height:0!important;object-fit:contain;visibility:visible!important;opacity:1!important}
.home-hero:before,.home-hero:after{display:none!important;content:none!important}
@media(max-width:700px){.portal-grid-four{grid-template-columns:1fr}.portal-grid-four .portal-card{grid-template-columns:38% 1fr}.portal-grid-four .portal-card img{min-height:145px}}