: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:smooth}
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,1040px);margin-inline:auto}
.skip-link{position:absolute;left:12px;top:-60px;z-index:5;padding:9px 12px;background:#fff}
.skip-link:focus{top:8px}
.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%,1100px);margin-inline:auto;padding:0 0 20px}
.hero-poster{display:block}
.hero-poster img{display:block;width:100%;height:auto}
.hero-action{width:min(100% - 36px,1040px);margin:16px auto 0}
.hero-action .button{width:100%}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.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}
.hero h1{max-width:920px;font-size:clamp(2.05rem,7.5vw,4.7rem);line-height:1.24;letter-spacing:-.055em;margin:16px 0 13px}
.hero h1 span{display:block;width:fit-content;margin-top:16px;padding:5px 10px;border:1px solid var(--teal);color:var(--teal);font-size:clamp(.88rem,2.4vw,1.1rem);font-weight:850;letter-spacing:.04em;line-height:1.4}
.hero-definition{font-size:clamp(1.24rem,5.3vw,1.85rem);line-height:1.5;letter-spacing:-.025em;font-weight:850;margin:0}
.hero-sub{max-width:640px;color:var(--muted);font-size:.9rem;line-height:1.7;margin:0 0 22px}
.desktop-break{display:none}
.hero-meta{display:grid;gap:9px;padding:15px 0;border-top:1px solid #c6d6d4;border-bottom:1px solid #c6d6d4}
.hero-meta time{display:grid;gap:2px;line-height:1.25}
.hero-date{color:var(--teal);font-size:1.12rem;font-weight:850;letter-spacing:-.02em}
.hero-date span{white-space:nowrap}
.hero-time{font:700 clamp(1.7rem,7vw,2.15rem)/1.25 Arial,Helvetica,sans-serif;letter-spacing:-.035em;white-space:nowrap}
.hero-meta-extras{color:var(--muted);font-size:.77rem;font-weight:750}
.hero-meta-extras span{padding:0 4px;color:var(--coral)}
.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}
.hero>.container>.button{margin-top:19px;width:100%}
.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:var(--white)}
.steps{list-style:none;padding:0;margin:22px 0;border-top:1px solid var(--line)}
.steps li{display:flex;gap:15px;padding:9px 0;border-bottom:1px solid var(--line);font-size:.87rem;font-weight:750}
.steps span{font:.76rem Arial,Helvetica,sans-serif;letter-spacing:.04em;color:var(--teal);padding-top:3px}
.register-card{scroll-margin-top:14px;margin-top:25px;background:#f1f5f3;border:1px solid #c9dcd7;padding:21px}
.register-card h3{font-size:1.35rem;letter-spacing:-.015em;margin:5px 0 4px}
.register-card>p:not(.register-label):not(.privacy-note){font-size:.8rem;color:var(--muted);margin:0 0 17px}
.register-card label{display:block;font-size:.79rem;font-weight:800;margin-bottom:7px}
.register-card label span{font-size:.65rem;color:#9b4e36;margin-left:6px}
.register-card input{display:block;width:100%;height:47px;padding:9px 12px;background:#fff;border:1px solid #9faeac;border-radius:2px}
.register-card input:focus{border-color:var(--teal)}
.register-card button{width:100%;margin-top:10px}
.privacy-note{font-size:.68rem;line-height:1.65;color:#677477;margin:12px 0 0}
.privacy-note a{text-underline-offset:2px}
.speakers-section{background:#eef2f0}
.speakers-grid{display:grid;gap:12px}
.speaker-card{padding:18px;background:var(--white);border:1px solid #d7e1de}
.speaker-head{display:flex;align-items:center;gap:15px}
.speaker-head img{width:86px;height:86px;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:.81rem;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{display:grid;gap:25px}
.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}
.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)}
.audience-section{background:#e8eeee}
.audience-grid{display:grid;gap:11px;margin-top:19px}
.info-card{background:var(--white);border:1px solid #d7e1de;padding:19px}
.info-card h3{font-size:1rem;margin:0 0 7px;letter-spacing:-.015em}
.info-card p{font-size:.84rem;line-height:1.8;color:var(--muted);margin:0}
.faq-section{background:var(--white)}
.faq-list{margin-top:10px;border-top:1px solid var(--line)}
.faq-list details{border-bottom: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{background:#f1f2ed;border-top:1px solid var(--line)}
.school-about-inner{display:grid;gap:16px;padding:32px 0}
.school-about h2{margin:5px 0 7px;font-size:1.28rem;letter-spacing:-.015em}
.school-about p:not(.section-label){margin:0;max-width:650px;color:var(--muted);font-size:.81rem;line-height:1.75}
.school-about a{justify-self:start;color:var(--teal);font-size:.81rem;font-weight:800;text-decoration:none;border-bottom:1px solid currentColor}
.school-about a:hover{color:#9c5b3d}
.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,1040px)}
  .header-inner{height:68px}
  .hero-inner{padding:30px 0 34px}
  .hero-action{margin-top:20px}
  .hero-action .button{width:auto;min-width:260px}
  .hero h1{margin:17px 0 16px}
  .hero-definition{font-size:1.85rem}
  .desktop-break{display:block}
  .hero-sub{font-size:.97rem}
  .hero-meta{width:min(100%,550px)}
  .hero>.container>.button{width:auto;min-width:240px}
  .section{padding:68px 0}
  .seminar-grid{display:grid;grid-template-columns:1fr .88fr;gap:7%;align-items:start}
  .register-card{margin-top:0;padding:28px}
  .speakers-grid{grid-template-columns:1fr 1fr}
  .speaker-card{padding:23px}
  .speaker-head img{width:105px;height:105px}
  .about-grid{grid-template-columns:1fr .8fr;align-items:start;gap:7%}
  .audience-grid{grid-template-columns:1fr 1fr}
  .faq-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:8%;align-items:start}
  .faq-list{margin-top:0}
  .school-about-inner{grid-template-columns:1fr auto;align-items:center;padding:42px 0}
}
@media(max-width:370px){
  .container{width:min(100% - 30px,1040px)}
  .hero h1{font-size:1.98rem}
  .hero-date{font-size:1.02rem}
  .hero-time{font-size:1.7rem}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}