:root{
  --ink:#263038;--muted:#5e686b;--paper:#f7f6f2;--white:#fffefa;
  --line:#d7dbd8;--aqua:#dce9e8;--teal:#325a60;--coral:#d58b64;
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  color:var(--ink);background:var(--paper);
}
*{box-sizing:border-box}
html{scroll-behavior:auto}
body{margin:0;min-width:320px}
a{color:inherit}
button,input{font:inherit}
img{display:block;max-width:100%}
::selection{background:#c5dddb}
:focus-visible{outline:3px solid var(--coral);outline-offset:3px}
.container{width:min(100% - 36px,880px);margin-inline:auto}
.content-column{max-width:680px}
.skip-link{position:absolute;left:12px;top:-60px;z-index:5;padding:9px 12px;background:#fff}
.skip-link:focus{top:8px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-header{border-bottom:1px solid var(--line);background:var(--paper)}
.header-inner{height:59px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{text-decoration:none;font-weight:850;line-height:1.1;font-size:.89rem;white-space:nowrap}
.brand span{display:block;margin-top:4px;color:#879296;font-size:.55rem;letter-spacing:.16em}
.header-cta{padding:8px 12px;border:1px solid #9caeac;border-radius:3px;font-size:.73rem;font-weight:800;text-decoration:none;white-space:nowrap}
.header-cta:hover{background:var(--ink);color:#fff}
.hero{background:#e8eeeb;border-bottom:1px solid var(--line)}
.hero-inner{width:min(100% - 36px,880px);margin-inline:auto;padding:17px 0 28px}
.hero-poster{display:block}
.hero-poster img{display:block;width:100%;height:auto;border-radius:5px}
.hero-catch{margin:18px 0 17px;font-size:1rem;line-height:1.76;font-weight:550;letter-spacing:0}
.hero-catch>span{display:block;text-wrap:balance}
.hero-catch .nowrap{white-space:nowrap}
.hero-cta{width:100%;max-width:360px}
.eyebrow,.section-label,.register-label{margin:0;color:var(--teal);font-size:.68rem;font-weight:850;letter-spacing:.15em}
.eyebrow span{color:var(--coral)}
.skill-word{font-family:Arial,Helvetica,sans-serif;font-weight:700;letter-spacing:-.025em;white-space:nowrap}
.button{display:inline-flex;align-items:center;justify-content:space-between;gap:24px;min-height:48px;padding:11px 18px;border-radius:3px;text-decoration:none;font-size:.88rem;font-weight:850;cursor:pointer}
.button-primary{background:var(--ink);color:#fff;border:1px solid var(--ink)}
.button-primary:hover{background:#3c555a}
.section{padding:49px 0}
.section h2{font-size:clamp(1.8rem,7vw,3rem);line-height:1.35;letter-spacing:-.015em;margin:8px 0 14px}
.section-lead{font-size:.91rem;line-height:1.8;color:#4d595d;margin:0}
.seminar-section{background:#e8eeee;padding:49px 0 56px}
.register-card{scroll-margin-top:14px;margin:0 auto;background:var(--white);border:1px solid #c9dcd7;padding:22px}
.register-card h2{font-size:clamp(1.55rem,6vw,2rem);line-height:1.35;letter-spacing:0;margin:7px 0 8px}
.register-meta{margin:0 0 15px;font-size:.88rem;font-weight:800;color:var(--teal)}
.register-intro{margin:0 0 22px;font-size:.88rem;line-height:1.7;color:var(--muted)}
.register-card label{display:block;font-size:.88rem;font-weight:800;margin-bottom:8px}
.register-card label span{font-size:.7rem;color:#9b4e36;margin-left:6px}
.register-card input{display:block;width:100%;height:52px;padding:10px 14px;background:#fff;border:1px solid #9faeac;border-radius:3px}
.register-card input:focus{border-color:var(--teal)}
.register-card button{width:100%;margin-top:12px;min-height:52px}
.privacy-note{font-size:.75rem;line-height:1.7;color:#677477;margin:16px 0 0}
.privacy-note a{text-underline-offset:2px}
.speakers-section{background:#eef2f0}
.speakers-grid{background:var(--white);border:1px solid #d7e1de;padding:20px}
.speaker-card+.speaker-card{border-top:1px solid var(--line);margin-top:24px;padding-top:24px}
.speaker-head{display:flex;align-items:center;gap:15px}
.speaker-head img{width:88px;height:88px;flex:none;object-fit:cover;border-radius:3px}
.speaker-head img[src*="yoshino"]{object-position:40% center}
.speaker-role{font-size:.68rem;letter-spacing:.08em;color:var(--teal);font-weight:850}
.speaker-head h3{margin:2px 0 0;font-size:1.15rem;letter-spacing:-.015em;line-height:1.35}
.speaker-title{margin:2px 0 0;color:var(--muted);font-size:.71rem;line-height:1.4}
.speaker-bio{margin:15px 0 0;color:var(--muted);font-size:.85rem;line-height:1.8}
.speaker-socials{display:flex;gap:8px;margin-top:15px;padding-top:12px;border-top:1px solid var(--line)}
.speaker-socials a{display:inline-flex;align-items:center;justify-content:center;width:35px;height:35px;border:1px solid #c9d6d2;border-radius:3px;text-decoration:none}
.speaker-socials a:hover{border-color:var(--teal);color:var(--teal)}
.speaker-socials img{width:17px;height:17px}
.about-section{background:var(--paper)}
.about-grid{background:var(--white);border:1px solid var(--line);padding:20px}
.about-grid h2{letter-spacing:0}
.source-links{display:flex;flex-wrap:wrap;gap:16px;margin-top:17px}
.source-links a{font-size:.78rem;font-weight:800;text-decoration:none;border-bottom:1px solid currentColor}
.source-links a:hover{color:#9c5b3d}
.x-embed{min-width:0;max-width:550px;margin:26px auto 0}
.x-reach{display:flex;flex-wrap:wrap;align-items:baseline;gap:5px 16px;margin:0 auto 12px;padding:11px 14px;max-width:550px;border-left:3px solid var(--coral);background:#eef2f0;color:var(--teal);font-size:.8rem;font-weight:750}
.x-reach strong{font:700 1.15rem/1 Arial,Helvetica,sans-serif;letter-spacing:-.035em}
.x-reach small{width:100%;color:var(--muted);font-size:.64rem;font-weight:600}
.x-embed .twitter-tweet{max-width:550px!important;margin:0 auto!important}
.x-embed .twitter-tweet:not(.twitter-tweet-rendered){box-sizing:border-box;width:100%;padding:20px;background:var(--white);border:1px solid var(--line);border-radius:8px;font-style:normal}
.x-embed .twitter-tweet:not(.twitter-tweet-rendered) p{margin:0 0 10px;line-height:1.7}
.x-embed-link{display:block;width:fit-content;margin:9px auto 0;font-size:.75rem;font-weight:800;text-decoration:none;border-bottom:1px solid currentColor}
.x-embed-link:hover{color:var(--teal)}
.program-section{background:#e8eeee}
.program-lead{margin:0;color:var(--muted);font-size:.91rem;line-height:1.7}
.program-list{list-style:none;margin:21px 0 0;padding:4px 20px;background:var(--white);border:1px solid #d7e1de}
.program-list li{display:grid;grid-template-columns:34px minmax(0,1fr);align-items:start;gap:12px;padding:14px 0;font-size:.91rem;font-weight:650;line-height:1.65}
.program-list li+li{border-top:1px solid var(--line)}
.program-number{padding-top:2px;color:var(--coral);font:800 .72rem/1.8 Arial,Helvetica,sans-serif;letter-spacing:.05em;font-variant-numeric:tabular-nums}
.program-list li:last-child{font-weight:800}
.audience-section{background:#e8eeee}
.audience-list{list-style:none;margin:19px 0 0;padding:7px 20px;background:var(--white);border:1px solid #d7e1de}
.audience-list li{position:relative;padding:14px 0 14px 18px;font-size:.91rem;line-height:1.7;font-weight:650}
.audience-list li::before{content:"";position:absolute;left:0;top:26px;width:7px;height:7px;border-radius:50%;background:var(--coral)}
.audience-list li+li{border-top:1px solid var(--line)}
.faq-section{background:var(--white)}
.faq-list{margin-top:19px;padding:0 20px;background:var(--white);border:1px solid #d7e1de}
.faq-list details+details{border-top:1px solid var(--line)}
.faq-list summary{cursor:pointer;position:relative;list-style:none;padding:16px 30px 16px 0;font-size:.85rem;font-weight:800;line-height:1.55}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;right:3px;top:10px;color:var(--teal);font-size:1.4rem;font-weight:400}
.faq-list details[open] summary::after{content:"−"}
.faq-list p{font-size:.8rem;color:var(--muted);margin:0 28px 17px 0;line-height:1.75}
.school-about{border-bottom:1px solid #536166}
.school-about-inner{padding:37px 0 32px}
.school-about .section-label{color:#a9d0c9}
.school-about h2{margin:8px 0;font-size:1.4rem;line-height:1.4;letter-spacing:0;color:#fff;font-family:inherit}
.school-about p:not(.section-label){margin:0;color:#c9d4d2;font-size:.85rem;line-height:1.8}
.school-about a{display:inline-block;margin-top:15px;color:#fff;font-size:.85rem;font-weight:800;text-decoration:none;border-bottom:1px solid currentColor}
.school-about a:hover{color:#a9d0c9}
.site-footer{background:#1e272e;color:#b8c5c5}
.footer-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:9px;padding:20px 0;font-size:.68rem}
.footer-inner div{display:flex;flex-wrap:wrap;gap:15px}
.footer-inner a{text-decoration:none}
@media(min-width:700px){
  .container{width:min(100% - 64px,880px)}
  .header-inner{height:68px}
  .hero-inner{width:min(100% - 64px,880px);padding:30px 0 42px}
  .hero-catch{margin:22px 0 18px;font-size:1.12rem}
  .hero-cta{width:auto;min-width:265px}
  .section{padding:68px 0}
  .seminar-section{padding:64px 0 72px}
  .register-card{padding:34px}
  .speakers-grid{padding:30px}
  .speaker-head img{width:105px;height:105px}
  .about-grid{padding:30px}
  .school-about-inner{padding:42px 0 38px}
}
@media(max-width:370px){
  .container,.hero-inner{width:min(100% - 30px,880px)}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}