@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;600;700;800;900&display=swap');

:root {
  --ink: #163b3e;
  --teal: #065c62;
  --teal-dark: #063e45;
  --muted: #516a6b;
  --lime: #e0f4a4;
  --mint: #eef5ef;
  --line: #c9d9d2;
  --paper: #fbfcf8;
  --blue: #173b77;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 120px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: 'Noto Sans JP','Yu Gothic',Meiryo,sans-serif; font-size: 16px; line-height: 1.9; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
a, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, summary:focus-visible { outline: 3px solid #bd8b00; outline-offset: 5px; }
h1, h2, h3, p, figure { margin: 0; }
h2 { font-size: 36px; font-weight: 700; line-height: 1.5; letter-spacing: .025em; }
h3 { font-size: 22px; font-weight: 700; line-height: 1.7; }
p, dd { overflow-wrap: anywhere; }
.section { max-width: 1260px; margin: auto; padding: 76px 40px; }
.eyebrow { color: var(--teal); font-size: 15px; font-weight: 700; letter-spacing: .1em; margin-bottom: 13px; }
.section-head h2, .section-heading-row h2, .audience-inner h2, .program-intro h2, .event-details h2, .registration-heading h2, .faq h2 { position: relative; padding-bottom: 23px; }
.section-head h2::after, .section-heading-row h2::after, .audience-inner h2::after, .program-intro h2::after, .event-details h2::after, .registration-heading h2::after, .faq h2::after { content: ''; position: absolute; left: 0; bottom: 0; width: 64px; height: 4px; background: var(--teal); }
.button { display: inline-flex; justify-content: space-between; align-items: center; gap: 28px; padding: 18px 25px; border: 1px solid var(--teal); background: var(--teal); color: white; font-size: 17px; font-weight: 700; line-height: 1.6; transition: background .2s; }
.button:hover { background: var(--teal-dark); }
.button > span { font-size: 24px; }
.text-link { display: inline-flex; align-items: center; gap: 20px; padding: 7px 0; border-bottom: 1px solid var(--teal); font-size: 15px; font-weight: 600; }
.text-link:hover { color: #16898c; }
.text-link > span { font-size: 22px; }
.header { position: sticky; top: 0; z-index: 10; min-height: 100px; padding: 14px 3.5%; display: flex; align-items: center; justify-content: space-between; gap: 24px; background: rgba(251,252,248,.98); border-bottom: 1px solid var(--line); }
.dx-banner { border: 1px solid #b8c8da; background: #fff; color: var(--blue); }
.dx-banner:hover { border-color: var(--blue); background: #f0f5fc; }
.brand { display: inline-flex; align-items: center; flex-shrink: 0; }
.brand img { width: 185px; height: auto; }
.header nav { display: flex; gap: 23px; font-size: 15px; font-weight: 600; margin-left: auto; }
.header nav a { white-space: nowrap; }
.header nav a:hover { text-decoration: underline; text-underline-offset: 7px; }
.header-cta { padding: 13px 20px; font-size: 15px; gap: 20px; white-space: nowrap; }
.skip { position: absolute; left: 20px; top: -150px; z-index: 30; background: white; padding: 15px; font-size: 16px; }
.skip:focus { top: 12px; }

/* Seminar title, date and venue form the first view. */
.hero {
  background-color: #eff8f5;
  background-image: linear-gradient(90deg,rgba(250,253,249,.42) 0%,rgba(250,253,249,.20) 52%,rgba(250,253,249,0) 76%),url('assets/hero-ai-cg-v3.png');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  border-bottom: 6px solid var(--teal);
}
.hero-inner { max-width: 1260px; margin: auto; padding: 38px 40px 40px; }
.hero-labels { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-bottom: 22px; }
.seminar-label { display: inline-flex; padding: 5px 16px; background: var(--teal); color: #fff; font-size: 16px; font-weight: 700; }
.hero-target { font-size: 16px; font-weight: 600; }
.hero-subject { font-size: 25px; font-weight: 700; margin-bottom: 9px; }
.hero h1 { color: var(--teal-dark); font-size: 62px; font-weight: 800; line-height: 1.3; letter-spacing: .015em; }
.hero-information { display: grid; grid-template-columns: minmax(0,1fr) 330px; gap: 36px; margin-top: 28px; align-items: stretch; }
.event-facts { display: grid; grid-template-columns: 1.1fr 1fr; column-gap: 24px; align-content: space-between; border-top: 1px solid #a7bfb2; padding-top: 18px; }
.fact-label { display: block; color: var(--teal); font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.hero-date > p { display: flex; flex-wrap: wrap; align-items: baseline; column-gap: 9px; line-height: 1.35; }
.hero-year { font-size: 19px; font-weight: 600; }
.hero-date strong { font-size: 58px; font-weight: 800; letter-spacing: -.045em; white-space: nowrap; }
.hero-date strong > span { font-size: 22px; padding: 0 4px; letter-spacing: 0; }
.hero-weekday { font-size: 17px; font-weight: 600; white-space: nowrap; }
.hero-time { font-size: 37px; line-height: 1.5; font-weight: 700; letter-spacing: -.015em; margin-top: 3px; }
.hero-time > span { font-size: 24px; padding: 0 9px; }
.hero-place { border-left: 1px solid #b9ccbd; padding-left: 24px; }
.hero-place strong { display: block; font-size: 30px; font-weight: 700; line-height: 1.6; }
.hero-place p > span { display: block; font-size: 17px; font-weight: 600; white-space: nowrap; }
.place-note { display: block; font-size: 15px; color: var(--muted); margin-top: 6px; }
.hero-actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 14px 18px; margin-top: 22px; }
.hero-actions .button { padding: 16px 23px; font-size: 17px; }
.free { display: inline-flex; align-items: center; justify-content: center; padding: 6px 17px; border: 1px solid #9db674; border-radius: 4px; background: var(--lime); color: var(--teal-dark); font-size: 17px; font-weight: 700; white-space: nowrap; }
.hero-duration { color: var(--muted); font-size: 15px; }
.hero-visual { position: relative; overflow: hidden; min-height: 230px; border: 6px solid #fff; box-shadow: 0 5px 25px #163b3e12; }
.hero-visual > img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.hero-visual figcaption { position: absolute; bottom: 0; left: 0; right: 0; padding: 6px 12px; font-size: 15px; color: white; background: #063e45eb; }

.about { border-bottom: 1px solid var(--line); }
.about-overview { display: grid; grid-template-columns: .95fr 1.15fr; gap: 48px; align-items: start; margin-top: 36px; }
.ws300-figure { min-width: 0; padding: 24px 24px 21px; background: radial-gradient(ellipse at 50% 40%,#fff 10%,#eff5e8 77%); border: 1px solid #c9d8cc; border-bottom: 5px solid var(--teal); }
.ws300-image-label { display: inline-flex; padding: 4px 13px; margin-bottom: 22px; color: #fff; background: var(--teal); font-size: 15px; font-weight: 700; }
.ws300-figure img { width: 100%; height: auto; object-fit: contain; }
.ws300-figure figcaption { text-align: center; color: var(--muted); font-size: 15px; line-height: 1.8; margin-top: 22px; }
.about-overview > .about-text { margin-top: 0; padding-top: 0; }
.about .about-text > p.ws300-kicker { color: var(--teal); font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.ws300-name { display: flex; align-items: baseline; flex-wrap: wrap; column-gap: 12px; font-size: 34px; font-weight: 700; line-height: 1.45; margin-bottom: 12px; }
.ws300-name > span { color: var(--teal); font-size: 44px; font-weight: 800; letter-spacing: -.02em; }
.about .about-text > p.ws300-platform { font-size: 15px; font-weight: 500; color: var(--muted); margin-bottom: 20px; }
.ws300-points { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0 0 24px; list-style: none; }
.ws300-points li { border: 1px solid #bed0b8; background: #eff5e8; color: var(--teal-dark); font-size: 15px; font-weight: 600; line-height: 1.7; padding: 6px 11px; }
.about-links { display: flex; flex-wrap: wrap; gap: 14px 26px; margin-top: 5px; }
.about-text { padding-top: 3px; }
.lead { font-size: 22px; font-weight: 700; line-height: 1.8; margin-bottom: 21px; }
.about-text > p:not(.lead) { font-size: 16px; color: var(--muted); line-height: 2.05; margin-bottom: 18px; }
.about-text .text-link { margin-top: 5px; }
.audience-section { background: var(--mint); border-bottom: 1px solid var(--line); }
.audience-inner { display: grid; grid-template-columns: .65fr 1.35fr; gap: 70px; padding-top: 60px; padding-bottom: 60px; }
.audience-list > div { display: flex; align-items: flex-start; gap: 22px; padding: 21px 0; border-bottom: 1px solid #c6d9ca; }
.audience-list > div:first-child { padding-top: 0; }
.audience-list > div:last-child { border: 0; padding-bottom: 0; }
.audience-list > div > span { display: grid; place-items: center; width: 34px; height: 34px; flex-shrink: 0; background: var(--teal); color: #fff; font-size: 15px; font-weight: 600; margin-top: 2px; }
.audience-list h3 { font-size: 21px; margin-bottom: 6px; }
.audience-list p { color: var(--muted); font-size: 16px; }
.section-heading-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 36px; }
.section-heading-row > p { color: var(--muted); font-size: 16px; padding-bottom: 3px; }
.takeaway-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 18px; }
.takeaway-grid article { border: 1px solid #c9d8cc; border-top: 5px solid var(--teal); background: #f1f5ed; padding: 24px 20px 26px; }
.card-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 23px; }
.card-top > span { font-size: 36px; line-height: 1; color: var(--teal); font-weight: 500; }
.card-top svg { width: 50px; height: 50px; stroke: var(--teal); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.mini-label { font-size: 15px; letter-spacing: .035em; font-weight: 600; color: var(--teal); margin-bottom: 12px; }
.takeaway-grid h3 { font-size: 20px; line-height: 1.75; margin-bottom: 18px; overflow-wrap: anywhere; }
.takeaway-grid article > p:last-child { color: var(--muted); font-size: 16px; line-height: 1.95; }
.program-section { background: var(--teal-dark); color: #fff; border-top: 6px solid #aeca88; }
.program-inner { display: grid; grid-template-columns: .8fr 1.3fr; gap: 64px; padding-top: 66px; padding-bottom: 66px; }
.program-section .eyebrow { color: #d5e9ae; }
.program-intro h2::after { background: var(--lime); }
.program-intro > p:not(.eyebrow) { font-size: 18px; color: #d8e8e1; margin-top: 24px; }
.program-note { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; max-width: 290px; margin-top: 30px; }
.program-note > span { font-size: 27px; font-weight: 600; }
.program-note i { font-size: 20px; font-style: normal; color: var(--lime); }
.program-note small { font-size: 15px; color: #d8e8e1; width: 100%; }
.timeline article { display: grid; grid-template-columns: 125px minmax(0,1fr); gap: 24px; padding: 27px 0; border-top: 1px solid #6b9294; }
.timeline article:last-child { padding-bottom: 0; }
.timeline-time { font-size: 32px; font-weight: 600; line-height: 1.5; }
.timeline-time > span { display: block; font-size: 17px; color: #c4ded5; font-weight: 400; }
.program-tag { display: inline-flex; font-size: 15px; color: var(--lime); letter-spacing: .025em; margin-bottom: 12px; }
.timeline h3 { font-size: 25px; line-height: 1.65; margin-bottom: 13px; }
.timeline p { color: #d8e8e1; font-size: 16px; line-height: 1.95; }
.speaker { font-size: 16px; color: white; margin-top: 19px; border-left: 3px solid var(--lime); padding-left: 13px; }
.gallery-section { border-bottom: 1px solid var(--line); }
.gallery { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 26px; align-items: start; }
.gallery figure { width: 100%; margin: 0; }
.gallery img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.gallery figcaption { display: flex; flex-wrap: wrap; gap: 4px 20px; justify-content: space-between; font-size: 15px; padding: 15px 0 11px; border-bottom: 2px solid var(--teal); }
.gallery figcaption > span { font-size: 15px; color: var(--teal); font-weight: 600; }
.gallery-note { color: var(--muted); font-size: 15px; line-height: 1.9; margin-top: 24px; }
.access-section { background: #eef3e8; border-bottom: 1px solid var(--line); }
.access-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 52px; align-items: stretch; }
.venue-panel { display: flex; flex-direction: column; justify-content: center; position: relative; overflow: hidden; min-height: 390px; background: #dce9c4; padding: 34px; }
.venue-location { font-size: 15px; letter-spacing: .06em; z-index: 1; }
.venue-name { position: relative; z-index: 1; font-size: 58px; line-height: 1.5; font-weight: 600; letter-spacing: -.05em; margin-top: 22px; }
.venue-name > span { font-weight: 400; }
.venue-panel > p:not(.venue-name) { font-size: 22px; line-height: 1.7; font-weight: 600; z-index: 1; }
.venue-caption { font-size: 16px; margin-top: 60px; z-index: 1; }
.venue-line { position: absolute; inset: 18% -23% -53% 33%; transform: rotate(-20deg); }
.venue-line > span { position: absolute; inset: 0; border: 1px solid #91ac7d; border-radius: 50%; }
.venue-line > span:nth-child(2) { inset: 15px; }
.venue-line > span:nth-child(3) { inset: 30px; }
.venue-line > span:nth-child(4) { inset: 45px; }
.venue-line > span:nth-child(5) { inset: 60px; }
.venue-description { font-size: 16px; line-height: 2; color: var(--muted); margin-bottom: 17px; }
dl { margin: 0; }
dl > div { display: grid; grid-template-columns: 85px minmax(0,1fr); gap: 18px; padding: 17px 0; border-bottom: 1px solid #bfcebf; }
dt { font-size: 16px; font-weight: 700; }
dd { margin: 0; font-size: 16px; line-height: 1.9; }
dd small { font-size: 15px; color: var(--muted); }
dd strong { font-weight: 700; }
.access-links { display: flex; flex-wrap: wrap; align-items: center; gap: 17px 24px; margin-top: 25px; }
.button-outline { background: transparent; color: var(--teal); font-size: 15px; padding: 13px 17px; gap: 20px; }
.button-outline:hover { color: #fff; }
.access-links > .text-link { font-size: 15px; }
.event-details { display: grid; grid-template-columns: .65fr 1.35fr; gap: 70px; }
.event-details dl > div { grid-template-columns: 115px minmax(0,1fr); padding: 20px 0; }
.event-details dl > div:first-child { border-top: 2px solid var(--teal); }
.organizer-logo { width: 170px; height: 65px; object-fit: contain; object-position: left center; mix-blend-mode: multiply; }
.registration-section { background: #e0eecb; border-top: 6px solid var(--teal); }
.registration-inner { display: grid; grid-template-columns: .85fr 1.15fr; gap: 64px; align-items: center; padding-top: 64px; padding-bottom: 64px; }
.registration-heading > p:not(.eyebrow) { margin: 25px 0 20px; font-size: 18px; line-height: 2; }
.registration-box { background: var(--paper); border: 1px solid #a9be9a; padding: 28px 30px; }
.registration-box-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; border-bottom: 1px solid var(--line); padding-bottom: 17px; }
.registration-box-head h3 { font-size: 24px; }
.registration-box-head > span { font-size: 15px; letter-spacing: .03em; color: var(--muted); }
#satori-form-slot { min-height: 305px; }
.form-placeholder { padding: 30px 0 12px; text-align: center; display: flex; flex-direction: column; align-items: center; }
.form-symbol svg { width: 44px; height: 44px; stroke: var(--teal); stroke-width: 1.3; }
.form-status { font-size: 20px; font-weight: 700; margin: 12px 0; }
.form-placeholder > p:not(.form-status) { font-size: 16px; color: var(--muted); line-height: 2; }
.preparation-label { display: inline-flex; padding: 5px 12px; background: #e7eee0; color: var(--muted); font-size: 15px; margin-top: 20px; }
.faq { display: grid; grid-template-columns: .65fr 1.35fr; gap: 70px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-child { border-top: 2px solid var(--teal); }
summary { display: flex; align-items: center; justify-content: space-between; list-style: none; gap: 20px; padding: 22px 0; cursor: pointer; font-size: 17px; font-weight: 600; }
summary::-webkit-details-marker { display: none; }
summary > span { color: var(--teal); font-size: 22px; transition: transform .2s; }
details[open] summary > span { transform: rotate(45deg); }
details > p { font-size: 16px; color: var(--muted); line-height: 2; padding: 0 26px 22px 0; }
footer { background: #fff; border-top: 1px solid var(--line); padding: 38px max(40px,calc((100% - 1180px)/2)) 26px; }
.footer-dx-banner { display: flex; align-items: center; gap: 34px; padding: 26px 32px; border: 2px solid #bdcddd; background: #f5f8fc; margin-bottom: 35px; }
.footer-dx-banner img { width: 230px; height: auto; }
.footer-banner-copy { display: block; border-left: 1px solid #bbcde0; padding-left: 30px; }
.footer-banner-copy > strong { display: block; font-size: 22px; font-weight: 700; }
.footer-banner-copy > span { display: block; font-size: 16px; margin-top: 6px; }
.banner-arrow { font-size: 34px; margin-left: auto; }
.footer-main { display: flex; align-items: center; justify-content: space-between; gap: 35px; padding-bottom: 26px; }
.footer-main p { font-size: 15px; color: var(--muted); line-height: 1.95; }
.back-top { display: inline-flex; align-items: center; gap: 20px; font-size: 15px; font-weight: 600; }
.back-top > span { font-size: 24px; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; border-top: 1px solid var(--line); padding-top: 20px; font-size: 15px; color: var(--muted); }
.mobile-only { display: none; }

/* Temporary registration card with a distinct accent and a clear action. */
.floating-registration { position: fixed; right: 22px; bottom: 22px; z-index: 20; display: block; width: 340px; max-width: calc(100% - 24px); background: linear-gradient(130deg,#fff2b0,#ffd36c); color: var(--teal-dark); border: 2px solid #fff; border-radius: 15px; box-shadow: 0 8px 30px #063e4533,0 0 0 1px #dca93780; animation: floating-registration-enter .6s cubic-bezier(.22,1,.36,1) both; }
.floating-registration[hidden] { display: none; }
@keyframes floating-registration-enter {
  from { transform: translate3d(0,calc(100% + 48px),0); opacity: 0; }
  to { transform: translate3d(0,0,0); opacity: 1; }
}
.floating-registration__link { display: flex; flex-direction: column; align-items: stretch; gap: 9px; min-width: 0; padding: 12px 14px 14px; border-radius: 13px; font-size: 20px; font-weight: 800; line-height: 1.5; }
.floating-registration__meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.floating-registration__badge { flex-shrink: 0; padding: 3px 11px; border-radius: 5px; background: var(--teal-dark); color: #fff; font-size: 15px; font-weight: 800; white-space: nowrap; }
.floating-registration__note { padding-right: 16px; color: var(--teal-dark); font-size: 15px; font-weight: 600; white-space: nowrap; }
.floating-registration__cta { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 14px; background: var(--teal-dark); color: #fff; border-radius: 9px; box-shadow: 0 3px 0 #022d32; transition: background .18s; }
.floating-registration__link:hover .floating-registration__cta { background: #087179; }
.floating-registration__link:active .floating-registration__cta { box-shadow: 0 1px 0 #022d32; }
.floating-registration__text { font-size: 20px; font-weight: 800; line-height: 1.4; white-space: nowrap; }
.floating-registration__arrow { width: 32px; height: 32px; padding: 7px; background: #fff0a5; color: var(--teal-dark); border-radius: 50%; flex-shrink: 0; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform .18s; }
.floating-registration__link:hover .floating-registration__arrow { transform: translateX(3px); }
.floating-registration__close { position: absolute; top: -14px; right: -10px; display: grid; place-items: center; width: 36px; height: 36px; padding: 8px; color: var(--teal-dark); background: #fff; border: 1px solid #b9cec9; border-radius: 50%; box-shadow: 0 2px 8px #063e4526; cursor: pointer; }
.floating-registration__close svg { width: 20px; height: 20px; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; }
.floating-registration__close:hover { background: #edf5ef; }
.floating-registration__close:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; }
.registration-box:focus-visible { outline: 3px solid var(--teal); outline-offset: 5px; }

@media (max-width: 1180px) {
  .header { padding-left: 30px; padding-right: 30px; }
  .header nav { display: none; }
  .hero h1 { font-size: 56px; }
  .hero-information { grid-template-columns: minmax(0,1fr) 285px; gap: 25px; }
  .event-facts { grid-template-columns: 1fr; }
  .hero-date > p { display: inline-flex; margin-right: 16px; }
  .hero-date strong { font-size: 48px; }
  .hero-date strong > span { font-size: 20px; }
  .hero-time { display: inline-block; font-size: 31px; }
  .hero-place { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px; padding: 12px 0 0; border: 0; }
  .hero-place .fact-label { margin: 0; }
  .hero-place p { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
  .hero-place strong { font-size: 26px; }
  .place-note { margin: 0; }
  .hero-actions { gap: 12px 16px; margin-top: 18px; }
  .hero-duration { width: 100%; }
  .audience-inner, .event-details, .faq { gap: 40px; grid-template-columns: .7fr 1.3fr; }
  .about-overview { gap: 35px; }
  .ws300-name { font-size: 30px; }
  .ws300-name > span { font-size: 39px; }
  .takeaway-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px; }
  .takeaway-grid article { padding: 26px; }
  .takeaway-grid h3 { font-size: 23px; }
  .program-inner { grid-template-columns: .8fr 1.2fr; gap: 40px; }
  .program-intro h2 { font-size: 32px; }
  .timeline article { grid-template-columns: 105px minmax(0,1fr); gap: 20px; }
  .timeline-time { font-size: 28px; }
  .timeline h3 { font-size: 23px; }
  .access-grid { grid-template-columns: .9fr 1.1fr; gap: 35px; }
  .venue-panel { padding: 27px; }
  .venue-name { font-size: 47px; }
  .venue-panel > p:not(.venue-name) { font-size: 20px; }
  .registration-inner { gap: 40px; }
  .footer-dx-banner { gap: 25px; padding: 24px; }
  .footer-banner-copy { padding-left: 25px; }
  .footer-banner-copy > strong { font-size: 20px; }
}
@media (max-width: 900px) {
  .section { padding: 62px 30px; }
  h2 { font-size: 32px; }
  .hero-inner { padding: 32px 30px 36px; }
  .hero h1 { font-size: 51px; }
  .hero-subject { font-size: 23px; }
  .hero-information { grid-template-columns: minmax(0,1fr) 240px; gap: 22px; }
  .hero-date strong { font-size: 44px; }
  .hero-year { font-size: 17px; }
  .hero-weekday { font-size: 16px; }
  .hero-time { font-size: 30px; margin-top: 8px; }
  .hero-visual { min-height: 290px; }
  .hero-place p { display: block; }
  .hero-place .fact-label { width: 100%; }
  .hero-actions .button { font-size: 16px; padding: 15px 17px; gap: 20px; }
  .free { font-size: 16px; padding: 5px 12px; }
  .about, .audience-inner, .event-details, .faq, .program-inner, .registration-inner { display: block; }
  .about-text, .audience-list, .event-details dl, .faq-list, .timeline, .registration-box { margin-top: 30px; }
  .about-overview { grid-template-columns: 1fr; gap: 30px; }
  .ws300-figure { width: 100%; max-width: 560px; margin: 0 auto; }
  .section-heading-row { display: block; }
  .section-heading-row > p, .section-heading-row > .text-link { margin-top: 20px; }
  .program-note { max-width: none; gap: 14px 20px; margin-top: 20px; }
  .program-note small { width: auto; }
  .timeline article { grid-template-columns: 130px minmax(0,1fr); gap: 30px; }
  .gallery { gap: 22px; }
  .access-grid { grid-template-columns: 1fr; gap: 30px; }
  .venue-panel { min-height: 310px; padding: 30px; }
  .venue-name { font-size: 54px; margin-top: 12px; }
  .venue-caption { margin-top: 35px; }
  .registration-heading > p:not(.eyebrow) { margin-top: 20px; }
  .registration-heading > p:not(.eyebrow) br:first-child { display: none; }
  .footer-dx-banner { flex-wrap: wrap; position: relative; padding: 27px; gap: 22px; }
  .footer-dx-banner img { width: 200px; }
  .footer-banner-copy { padding: 0; border: 0; width: 100%; }
  .banner-arrow { position: absolute; top: 32px; right: 27px; }
}
@media (max-width: 600px) {
  html { scroll-padding-top: 118px; }
  body { font-size: 16px; }
  .header { min-height: 96px; gap: 12px; padding: 10px 18px; }
  .brand img { width: 145px; }
  .header-cta { font-size: 15px; padding: 12px 13px; gap: 12px; }
  .header-cta > span { font-size: 20px; }
  .hero {
    background-image: linear-gradient(90deg,rgba(250,253,249,.92) 0%,rgba(250,253,249,.76) 56%,rgba(250,253,249,.42) 100%),url('assets/hero-ai-cg-v3.png');
    background-size: 100% 100%,auto 600px;
    background-position: 0 0,70% top;
  }
  .hero-inner { padding: 26px 21px 32px; }
  .hero-labels { gap: 11px; margin-bottom: 19px; }
  .seminar-label { font-size: 15px; padding: 4px 12px; }
  .hero-target { font-size: 15px; line-height: 1.7; }
  .hero-subject { font-size: 20px; line-height: 1.75; margin-bottom: 12px; }
  .hero h1 { font-size: clamp(30px,7.65vw,45px); line-height: 1.45; letter-spacing: 0; }
  .hero-information { display: flex; flex-direction: column; gap: 25px; margin-top: 23px; }
  .event-facts { padding-top: 17px; }
  .fact-label { font-size: 15px; margin-bottom: 4px; }
  .hero-date > p { display: flex; gap: 9px; margin: 0; }
  .hero-year { font-size: 18px; }
  .hero-date strong { font-size: 48px; line-height: 1.35; }
  .hero-date strong > span { font-size: 20px; padding: 0 3px; }
  .hero-weekday { font-size: 17px; }
  .hero-time { font-size: 34px; margin-top: 3px; }
  .hero-time > span { font-size: 23px; padding: 0 9px; }
  .hero-place { margin-top: 14px; padding-top: 15px; border-top: 1px solid #b9ccbd; gap: 4px 15px; }
  .hero-place .fact-label { width: auto; margin: 0; }
  .hero-place strong { font-size: 27px; }
  .hero-place p { display: contents; }
  .hero-place p > span { width: 100%; font-size: 17px; white-space: normal; }
  .place-note { font-size: 15px; }
  .hero-actions { margin-top: 20px; gap: 14px; }
  .hero-actions .button { font-size: 16px; padding: 16px 18px; gap: 20px; }
  .hero-actions .free { font-size: 17px; padding: 6px 12px; }
  .hero-duration { font-size: 15px; }
  .hero-visual { min-height: 0; aspect-ratio: 3 / 2; border-width: 5px; }
  .hero-visual figcaption { font-size: 15px; padding: 5px 10px; }
  .section { padding: 50px 22px; }
  h2, .program-intro h2 { font-size: 29px; line-height: 1.5; letter-spacing: 0; }
  .section-head h2, .section-heading-row h2, .audience-inner h2, .program-intro h2, .event-details h2, .registration-heading h2, .faq h2 { padding-bottom: 19px; }
  .eyebrow { font-size: 15px; margin-bottom: 10px; letter-spacing: .055em; }
  .about-text, .audience-list, .event-details dl, .faq-list, .timeline, .registration-box { margin-top: 27px; }
  .about-overview { gap: 26px; margin-top: 27px; }
  .ws300-figure { padding: 19px 18px; }
  .ws300-image-label { margin-bottom: 19px; }
  .ws300-figure figcaption { margin-top: 19px; }
  .ws300-name { font-size: 28px; column-gap: 10px; }
  .ws300-name > span { font-size: 36px; }
  .about-text > p.ws300-kicker { font-size: 16px; }
  .about-text > p.ws300-platform { font-size: 15px; }
  .ws300-points { gap: 9px; margin-bottom: 23px; }
  .ws300-points li { font-size: 15px; }
  .about-links { gap: 15px; }
  .lead { font-size: 20px; line-height: 1.85; }
  .lead br { display: none; }
  .about-text > p:not(.lead) { font-size: 16px; line-height: 2; }
  .text-link { font-size: 15px; gap: 13px; }
  .audience-list > div { gap: 14px; padding: 22px 0; }
  .audience-list > div > span { width: 31px; height: 31px; font-size: 15px; margin-top: 1px; }
  .audience-list h3 { font-size: 19px; margin-bottom: 7px; }
  .audience-list p { font-size: 16px; }
  .section-heading-row { margin-bottom: 27px; }
  .section-heading-row > p { margin-top: 18px; font-size: 16px; }
  .takeaway-grid { grid-template-columns: 1fr; gap: 21px; }
  .takeaway-grid article { padding: 25px; }
  .card-top { margin-bottom: 18px; }
  .card-top > span { font-size: 34px; }
  .card-top svg { width: 47px; height: 47px; }
  .mini-label { font-size: 15px; margin-bottom: 11px; }
  .takeaway-grid h3 { font-size: 22px; line-height: 1.7; margin-bottom: 15px; }
  .takeaway-grid article > p:last-child { font-size: 16px; }
  .program-intro > p:not(.eyebrow) { font-size: 18px; margin-top: 20px; }
  .program-note { gap: 12px; margin-top: 20px; }
  .program-note > span { font-size: 25px; }
  .program-note i { font-size: 18px; }
  .program-note small { width: 100%; font-size: 15px; }
  .timeline article { grid-template-columns: 85px minmax(0,1fr); gap: 18px; padding: 25px 0; }
  .timeline-time { font-size: 25px; }
  .timeline-time > span { font-size: 15px; }
  .program-tag { font-size: 15px; line-height: 1.8; margin-bottom: 12px; }
  .timeline h3 { font-size: 21px; margin-bottom: 14px; }
  .timeline h3 br { display: none; }
  .timeline p { font-size: 16px; line-height: 1.95; }
  .speaker { font-size: 15px; margin-top: 20px; padding-left: 10px; }
  .gallery { grid-template-columns: 1fr; gap: 28px; }
  .gallery img { aspect-ratio: 3 / 2; }
  .gallery figcaption, .gallery figcaption > span { font-size: 15px; }
  .gallery figcaption { flex-direction: column; gap: 5px; padding-top: 12px; }
  .gallery-note { font-size: 15px; margin-top: 23px; }
  .venue-panel { min-height: 320px; padding: 26px; }
  .venue-location { font-size: 15px; }
  .venue-name { font-size: 47px; margin-top: 17px; }
  .venue-panel > p:not(.venue-name) { font-size: 20px; }
  .venue-caption { font-size: 15px; margin-top: 40px; }
  .venue-description { font-size: 16px; }
  dl > div { grid-template-columns: 65px minmax(0,1fr); gap: 15px; padding: 17px 0; }
  dt, dd { font-size: 16px; }
  dd small { font-size: 15px; }
  .access-links { gap: 19px; }
  .button-outline { font-size: 15px; padding: 14px 17px; gap: 19px; }
  .access-links > .text-link { font-size: 15px; }
  .event-details dl > div { grid-template-columns: 83px minmax(0,1fr); padding: 18px 0; gap: 14px; }
  .organizer-logo { width: 160px; height: 60px; }
  .registration-heading > p:not(.eyebrow) { font-size: 18px; margin: 20px 0; }
  .registration-heading > p:not(.eyebrow) br:first-child { display: block; }
  .registration-box { padding: 24px 20px; }
  .registration-box-head h3 { font-size: 22px; }
  .registration-box-head > span { font-size: 15px; }
  #satori-form-slot { min-height: 300px; }
  .form-status { font-size: 18px; }
  .form-placeholder > p:not(.form-status) { font-size: 16px; }
  .form-placeholder > p:not(.form-status) br { display: none; }
  .preparation-label { font-size: 15px; padding: 6px 10px; }
  summary { font-size: 16px; gap: 15px; padding: 21px 0; }
  summary > span { font-size: 22px; flex-shrink: 0; }
  details > p { font-size: 16px; padding-right: 12px; }
  footer { padding: 32px 22px 44px; }
  .footer-dx-banner { padding: 24px 20px; margin-bottom: 29px; gap: 20px; }
  .footer-dx-banner img { width: 200px; }
  .footer-banner-copy > strong { font-size: 19px; line-height: 1.8; }
  .footer-banner-copy > span { font-size: 15px; line-height: 1.9; }
  .banner-arrow { font-size: 28px; right: 19px; top: 28px; }
  .footer-main { flex-wrap: wrap; gap: 22px; padding-bottom: 25px; }
  .footer-main p { font-size: 15px; line-height: 2; }
  .back-top { font-size: 15px; margin-left: auto; gap: 18px; }
  .footer-bottom { font-size: 15px; gap: 12px; }
  .floating-registration { right: 12px; bottom: max(12px,env(safe-area-inset-bottom)); }
  .floating-registration__link { padding: 12px; gap: 9px; }
}
@media (max-width: 360px) {
  .floating-registration__link { padding: 11px; gap: 9px; font-size: 18px; }
  .floating-registration__badge { padding: 3px 9px; }
  .floating-registration__cta { padding: 10px 12px; gap: 10px; }
  .floating-registration__text { font-size: 18px; }
  .floating-registration__arrow { width: 30px; height: 30px; }
  .header { padding-left: 12px; padding-right: 12px; gap: 8px; }
  .brand img { width: 132px; }
  .header-cta { padding: 11px 10px; gap: 8px; }
  .hero-inner { padding-left: 18px; padding-right: 18px; }
  .hero h1 { font-size: 28px; }
  .hero-date strong { font-size: 43px; }
  .hero-date > p { gap: 7px; }
  .hero-actions .button { gap: 14px; padding: 15px; }
  .hero-actions .free { font-size: 15px; padding: 6px 10px; }
  .section { padding-left: 19px; padding-right: 19px; }
  h2, .program-intro h2 { font-size: 27px; }
  .timeline article { grid-template-columns: 74px minmax(0,1fr); gap: 14px; }
  .timeline-time { font-size: 23px; }
  .venue-name { font-size: 42px; }
  .footer-dx-banner img { width: 175px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
  .floating-registration { animation: none; }
}