:root{
  --brand:#e63946;
  --dark:#0b0f19;
  --text:#2b2f3a;
  --muted:#6b7280;
  --bg:#ffffff;
  --light:#f5f7fb;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family: system-ui, -apple-system, Segoe UI, Roboto, Noto Sans, Hiragino Kaku Gothic ProN, Meiryo, sans-serif;color:var(--text);background:#fff}
a{color:inherit;text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid #eef0f4}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;font-size:20px;letter-spacing:.2px;color:var(--dark)}
.logo span{color:var(--brand)}
.nav{display:flex;gap:24px;align-items:center}
.nav a{color:#445; font-weight:600}
.cta{display:inline-block;background:var(--brand);color:#fff;padding:10px 16px;border-radius:10px;font-weight:700;box-shadow:0 6px 16px rgba(230,57,70,.25)}
.menu-btn{display:none;border:1px solid #e5e7eb;padding:8px 10px;border-radius:10px;background:#fff}
.header-actions{display:flex;align-items:center;gap:10px}
.lang-toggle{border:1px solid #e5e7eb;background:#fff;color:#334155;padding:8px 12px;border-radius:999px;font-weight:700;cursor:pointer;white-space:nowrap}
.lang-toggle:hover{background:#f8fafc}
@media(max-width:900px){.header-actions{gap:8px}.lang-toggle{padding:7px 10px;font-size:13px}}

@media(max-width:900px){
  .menu-btn{display:block}
  .nav{position:absolute;left:0;right:0;top:64px;background:#fff;border-bottom:1px solid #eef0f4;display:none;flex-direction:column;padding:16px}
  .nav.open{display:flex}
}

.hero{position:relative;background:linear-gradient(0deg, rgba(11,15,25,.55), rgba(11,15,25,.55)), url('images/hero.jpg');background-size:cover;background-position:center;color:#fff}
.hero .inner{padding:120px 0}
.hero h1{font-size:48px;line-height:1.1;margin:0 0 14px}
.hero p{font-size:18px;color:#e5e7eb;max-width:720px}
.hero .actions{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 18px;border-radius:12px;font-weight:700}
.btn.primary{background:var(--brand);color:#fff}
.btn.ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.25)}

.section{padding:72px 0}
.section.light{background:var(--light)}
.section h2{font-size:28px;margin:0 0 6px}
.section .lead{color:var(--muted);margin:0 0 26px}

.grid{display:grid;gap:18px}
.grid.features{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid #eef0f4;border-radius:14px;padding:18px}
.card h3{margin:10px 0 8px;font-size:18px}
.card p{margin:0;color:#667085}

@media(max-width:1000px){ .grid.features{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){ .grid.features{grid-template-columns:1fr}}

.news{display:grid;gap:12px}
.news-item{display:flex;gap:14px;align-items:flex-start;padding:12px 0;border-bottom:1px solid #eef0f4}
.news-date{font-weight:700;color:var(--brand);min-width:100px}
.news-title{font-weight:700}

.company{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.company .kv{border-radius:12px;min-height:220px;background:url('images/company.jpg') center/cover no-repeat}
.kv-note{font-size:12px;color:#94a3b8;margin-top:6px}
@media(max-width:900px){.company{grid-template-columns:1fr}}

.contact-cta{display:flex;gap:14px;flex-wrap:wrap}
.contact-cta .btn{font-size:16px}

.footer{background:#0b0f19;color:#b8c1d1;padding:28px 0;margin-top:0}
.footer a{color:#d1dae6}
.footer small{display:block;color:#8b95a7;margin-top:6px}

.badge-wrap{padding:28px 0;background:#fff;text-align:center}
.badge-wrap .caption{font-weight:700;margin-bottom:10px;color:#333}
.badge-row{display:flex;justify-content:center;gap:20px;flex-wrap:wrap}
.badge-row img{height:44px}


/* AI security seminar reservation page */
.text-link{display:inline-block;margin-top:12px;color:var(--brand);font-weight:800;text-decoration:underline;text-underline-offset:3px}
.featured-card{border-color:#ffd6d9;background:linear-gradient(180deg,#fff,#fff7f8)}
.seminar-hero{background:linear-gradient(135deg,#fff5f6,#f5f7fb);border-bottom:1px solid #eef0f4}
.seminar-hero .inner{padding:72px 0 56px;color:var(--text)}
.seminar-eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid #ffd6d9;color:var(--brand);padding:7px 12px;border-radius:999px;font-weight:800;font-size:14px;margin-bottom:16px}
.seminar-hero h1{font-size:42px;line-height:1.15;margin:0 0 14px;color:var(--dark)}
.seminar-hero p{font-size:18px;color:#475569;max-width:760px;margin:0 0 20px}
.seminar-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.seminar-layout{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr);gap:24px;align-items:start}
.seminar-panel{background:#fff;border:1px solid #eef0f4;border-radius:18px;padding:24px;box-shadow:0 14px 40px rgba(15,23,42,.06)}
.seminar-panel h2{font-size:24px;margin:0 0 10px}
.seminar-panel h3{font-size:18px;margin:22px 0 8px;color:#111827}
.seminar-panel p,.seminar-panel li{color:#475569;line-height:1.75}
.seminar-panel ul{padding-left:20px;margin:10px 0}
.info-list{display:grid;gap:10px;margin-top:16px}
.info-row{display:grid;grid-template-columns:110px 1fr;gap:12px;padding:12px;border:1px solid #eef0f4;border-radius:12px;background:#fbfdff}
.info-row strong{color:#111827}
.capacity-box{border:1px solid #fde68a;background:#fffbeb;border-radius:14px;padding:16px;margin-top:16px}
.capacity-box strong{color:#92400e}

.seminar-pamphlet-full{width:100%;margin:32px 0 0;padding:0 20px}
.seminar-pamphlet-full img{display:block;width:100%;max-width:1100px;height:auto;margin:0 auto;border-radius:18px;box-shadow:0 16px 48px rgba(15,23,42,.12);border:1px solid #eef0f4;background:#fff}
@media(max-width:700px){.seminar-pamphlet-full{padding:0 12px;margin-top:24px}.seminar-pamphlet-full img{border-radius:14px}}
.form-frame-wrap{margin-top:18px;border:1px solid #e5e7eb;border-radius:16px;overflow:hidden;background:#f8fafc}
.form-placeholder{padding:32px;text-align:center;color:#475569}
.form-placeholder code{display:inline-block;background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:4px 8px;color:#111827}
.form-frame-wrap iframe{display:block;width:100%;min-height:780px;border:0;background:#fff}
.notice-box{border:1px solid #dbeafe;background:#eff6ff;border-radius:14px;padding:16px;margin-top:16px;color:#1e3a8a}
.steps{counter-reset:step;display:grid;gap:12px;margin-top:14px}
.step{position:relative;padding:14px 14px 14px 48px;border:1px solid #eef0f4;border-radius:14px;background:#fff}
.step:before{counter-increment:step;content:counter(step);position:absolute;left:14px;top:14px;width:24px;height:24px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;font-size:13px}
.code-block{white-space:pre-wrap;overflow:auto;background:#0b0f19;color:#e5e7eb;border-radius:14px;padding:16px;font-size:13px;line-height:1.6;margin-top:12px}
@media(max-width:900px){.seminar-hero h1{font-size:34px}.seminar-layout{grid-template-columns:1fr}.seminar-hero .inner{padding:54px 0 44px}.info-row{grid-template-columns:1fr;gap:4px}}

/* AI security seminar list page */
.seminar-list-hero .inner{padding-bottom:48px}
.seminar-list-panel{max-width:920px;margin:0 auto}
.seminar-list-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:18px}
.seminar-list-head p{margin:8px 0 0;color:#64748b;line-height:1.7}
.seminar-list{display:grid;gap:14px;margin-top:18px}
.seminar-list-item{display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:18px;align-items:center;border:1px solid #eef0f4;border-radius:16px;padding:18px;background:#fff}
.seminar-list-item.active{border-color:#ffd6d9;background:linear-gradient(180deg,#fff,#fff7f8)}
.seminar-list-item.upcoming{background:#fbfdff}
.seminar-round{display:inline-flex;align-items:center;justify-content:center;min-height:42px;border-radius:999px;background:#fff;border:1px solid #ffd6d9;color:var(--brand);font-weight:900}
.seminar-summary h3{margin:4px 0 0;font-size:20px;color:#111827}
.seminar-date{font-weight:800;color:#475569}
.btn.compact{padding:10px 16px;border-radius:10px;white-space:nowrap}
.btn.disabled{background:#e5e7eb;color:#64748b;cursor:not-allowed}
@media(max-width:700px){
  .seminar-list-item{grid-template-columns:1fr;gap:10px}
  .seminar-round{width:max-content;padding:0 16px}
  .seminar-item-action{display:flex;justify-content:flex-start}
}

/* Legal pages */
.legal-hero{background:linear-gradient(135deg,#fff5f6,#f8fafc);border-bottom:1px solid #eef0f4}
.legal-hero .inner{padding:64px 0 44px;color:var(--text)}
.legal-hero h1{font-size:42px;line-height:1.15;margin:0 0 14px;color:var(--dark)}
.legal-hero p{font-size:17px;color:#475569;max-width:820px;margin:0 0 10px;line-height:1.75}
.legal-date{font-size:14px!important;color:#64748b!important;font-weight:700}
.legal-section{background:#fff}
.legal-panel{max-width:920px;margin:0 auto;background:#fff;border:1px solid #eef0f4;border-radius:18px;padding:32px;box-shadow:0 14px 40px rgba(15,23,42,.06)}
.legal-panel h2{font-size:22px;margin:30px 0 10px;color:#111827;border-top:1px solid #eef0f4;padding-top:24px}
.legal-panel h2:first-child{margin-top:0;border-top:0;padding-top:0}
.legal-panel p,.legal-panel li{color:#475569;line-height:1.85}
.legal-panel ul{padding-left:22px;margin:10px 0 18px}
.legal-panel a{color:var(--brand);font-weight:800;text-decoration:underline;text-underline-offset:3px}
.legal-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px;padding-top:24px;border-top:1px solid #eef0f4}
.legal-outline{border:1px solid #e5e7eb;color:#111827!important;text-decoration:none!important;background:#fff}
@media(max-width:700px){.legal-hero h1{font-size:34px}.legal-panel{padding:22px}.legal-panel h2{font-size:20px}}


/* Organizer profile section for AI seminar list */
.profile-card{
  background:linear-gradient(180deg,#ffffff,#fff7f8);
  border:1px solid #ffd6d9;
  border-radius:18px;
  padding:28px;
  margin:0 0 28px;
  box-shadow:0 14px 40px rgba(15,23,42,.06);
}
.profile-card-head{margin-bottom:18px}
.profile-card-head h2{margin:6px 0 0;font-size:26px;color:#111827}
.profile-grid{
  display:grid;
  grid-template-columns:120px 1fr;
  gap:18px 22px;
  align-items:start;
}
.profile-label{
  font-weight:800;
  color:#e63946;
  padding-top:2px;
}
.profile-content{
  color:#334155;
  line-height:1.85;
}
.profile-career-list,
.profile-qualification-list,
.profile-cert-list,
.profile-license-list{
  margin:0;
  padding-left:0;
  list-style:none;
  line-height:1.45;
}
.profile-career-list li,
.profile-qualification-list li,
.profile-cert-list li,
.profile-license-list li{
  margin:0 0 3px;
}
.btn.disabled{
  opacity:.55;
  pointer-events:none;
  cursor:not-allowed;
}
@media(max-width:700px){
  .profile-card{padding:22px}
  .profile-grid{grid-template-columns:1fr;gap:8px}
  .profile-label{margin-top:10px}
}