:root{
  --navy:#003568;
  --blue:#00569e;
  --gold:#c89d2c;
  --gold-light:#e9d7a6;
  --ink:#132f4b;
  --muted:#5b6b78;
  --pale:#f5f8fb;
  --line:#d9e1e8;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font-family:"Yu Mincho","Hiragino Mincho ProN","BIZ UDPMincho","Noto Serif JP",serif;background:#fff;line-height:1.95;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1080px,calc(100% - 48px));margin:auto}
.header{height:86px;background:#fff;display:flex;align-items:center;border-bottom:1px solid #e8edf1;position:relative;z-index:10}
.header-inner{width:min(1180px,calc(100% - 36px));margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo-wrap{display:flex;align-items:center;gap:12px;min-width:260px}
.logo-wrap img{width:78px;height:68px;object-fit:contain}
.logo-name{font-size:12px;letter-spacing:.08em;color:#153450;line-height:1.5;white-space:nowrap}
.nav{display:flex;align-items:center;font-family:"Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP",sans-serif;font-weight:700;font-size:14px}
.nav a{padding:10px 24px;border-left:1px solid var(--gold-light);position:relative;white-space:nowrap}
.nav a:last-child{border-right:1px solid var(--gold-light)}
.nav a.active{color:var(--gold)}
.nav a.active:after{content:"";position:absolute;left:24px;right:24px;bottom:1px;height:2px;background:var(--gold)}
.hero{position:relative;overflow:hidden;background:linear-gradient(120deg,#003264 0%,#00569e 70%,#0d6ab2 100%);color:#fff;min-height:280px;display:flex;align-items:center}
.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px);background-size:100% 42px;opacity:.48}
.hero-mark{position:absolute;right:3%;top:50%;transform:translateY(-50%);width:min(280px,38vw);height:auto;opacity:.18;pointer-events:none;z-index:1}
.hero-inner{position:relative;z-index:2;padding:64px 0 56px}
.eyebrow{display:flex;align-items:center;gap:14px;font-size:13px;letter-spacing:.18em;color:#f0d78e;font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-weight:700}
.eyebrow:before{content:"";width:54px;height:1px;background:#f0d78e}
.hero h1{font-size:40px;line-height:1.4;margin:18px 0 0;letter-spacing:.06em;font-weight:600}
.breadcrumb{height:52px;display:flex;align-items:center;border-bottom:1px solid var(--line);font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-size:12px;color:#687986}
.breadcrumb span{margin:0 12px;color:#a2acb5}

.project{padding:80px 0 40px;background:#fff}
.project-block{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;margin:0 0 88px}
.project-block:last-child{margin-bottom:40px}
.project-block.is-reverse .project-media{order:2}
.project-block.is-reverse .project-body{order:1}
.project-media{margin:0;background:#eef3f7;overflow:hidden}
.project-media.img-with-note{position:relative}
.project-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.img-note{position:absolute;right:8px;bottom:8px;padding:3px 7px;font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-size:10px;line-height:1.4;letter-spacing:.04em;color:#fff;background:rgba(0,0,0,.55)}
.project-num{display:inline-block;font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-size:12px;font-weight:700;letter-spacing:.18em;color:var(--gold);margin-bottom:14px}
.project-body h2{margin:0 0 18px;font-size:28px;line-height:1.55;letter-spacing:.04em;color:var(--navy);font-weight:700}
.project-body h2:after{content:"";display:block;width:46px;height:2px;background:var(--gold);margin-top:18px}
.project-body p{margin:0;font-size:16px;line-height:2.15;color:#31475b;text-align:justify;text-justify:inter-ideograph}
.project-note{margin-top:18px!important;font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-size:14px!important;color:var(--muted)!important;text-align:left!important}

.lecture{padding:0 0 96px}
.lecture-inner{padding:48px 52px;background:var(--pale);border:1px solid var(--line)}
.lecture-inner h2{margin:0 0 18px;font-size:26px;line-height:1.55;letter-spacing:.04em;color:var(--navy);font-weight:700}
.lecture-inner h2:after{content:"";display:block;width:46px;height:2px;background:var(--gold);margin-top:18px}
.lecture-inner p{margin:0;font-size:16px;line-height:2.15;color:#31475b}
.lecture-inner .project-note{margin-top:14px}

.coming-soon{padding:0 0 88px;background:#fff}
.coming-soon-card{max-width:560px;margin:0 auto;background:transparent}
.coming-soon-media{background:#eef3f7;overflow:hidden}
.coming-soon-media img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
.coming-soon-body{padding:0 0 18px;text-align:center}
.coming-soon-body p{margin:0;font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-size:16px;line-height:1.8;color:#31475b;font-weight:700}

.support{position:relative;overflow:hidden;padding:90px 0 96px;color:#fff;text-align:center;background:linear-gradient(rgba(0,58,111,.93),rgba(0,69,126,.93)),url("../assets/school_bg.jpg") center/cover no-repeat}
.support:after{content:"70";position:absolute;right:-40px;bottom:-150px;font-family:Arial,sans-serif;font-weight:800;font-size:340px;line-height:1;color:rgba(255,255,255,.04)}
.support .container{position:relative;z-index:2}
.support h2{font-size:31px;line-height:1.8;margin:0;font-weight:600;letter-spacing:.06em}
.support .gold-rule{width:46px;height:2px;background:#e1b33a;margin:20px auto 24px}
.support p{font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-size:15px;line-height:2;color:rgba(255,255,255,.9);margin:0 0 32px}
.cta{min-width:250px;display:inline-flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 22px;font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-size:14px;font-weight:700;border:1px solid #d3a42c;background:linear-gradient(90deg,#d9a71c,#efc34d);color:#fff}
.cta:after{content:"›";font-size:24px;line-height:1;color:#fff}
.back-home{padding:52px 0;background:#fff;text-align:center}
.back-home a{display:inline-flex;align-items:center;gap:32px;padding:13px 18px 13px 20px;border-bottom:1px solid var(--gold);font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-weight:700;font-size:14px;color:var(--navy)}
.back-home a:after{content:"›";font-size:26px;color:var(--gold)}
.footer{background:var(--navy);color:#d9e7f4;text-align:center;padding:23px 18px;font-family:Arial,"Hiragino Kaku Gothic ProN",sans-serif;font-size:11px;letter-spacing:.02em}

@media (max-width:900px){
  .header{height:auto;padding:12px 0}
  .header-inner{align-items:flex-start}
  .logo-name{display:none}
  .nav{font-size:12px;flex-wrap:wrap;justify-content:flex-end}
  .nav a{padding:8px 12px}
  .nav a.active:after{left:12px;right:12px}
  .hero{min-height:270px}
  .hero-mark{width:min(220px,36vw)}
  .project-block,.project-block.is-reverse{grid-template-columns:1fr;gap:28px}
  .project-block.is-reverse .project-media,
  .project-block.is-reverse .project-body{order:initial}
  .project-body h2{font-size:24px}
  .lecture-inner{padding:36px 28px}
}
@media (max-width:680px){
  .container{width:min(100% - 32px,1080px)}
  .header-inner{display:block}
  .logo-wrap{min-width:0;justify-content:center}
  .nav{margin-top:8px;justify-content:center}
  .nav a{border-left:0!important;border-right:0!important;padding:8px 9px}
  .hero{min-height:240px}
  .hero-inner{padding:56px 0 48px}
  .hero h1{font-size:28px}
  .project{padding:56px 0 24px}
  .project-block{margin-bottom:64px}
  .project-body p{font-size:15px;text-align:left}
  .lecture{padding-bottom:72px}
  .lecture-inner h2{font-size:22px}
  .support{padding:70px 0}
  .support h2{font-size:24px}
  .cta{min-width:min(100%,300px)}
}