/* ============================================================
   FLUED 共催セミナーLP 2026.9
   tokens: メイン#24366D / アクセント#EF5050 / 黒#0C0A0A /
           白#FDFDFD / 背景#F4F3F3 / 線#D1D4DD
============================================================ */
:root {
  --c-main: #24366d;
  --c-accent: #ef5050;
  --c-black: #0c0a0a;
  --c-white: #fdfdfd;
  --c-bg: #f4f3f3;
  --c-line: #d1d4dd;
  --c-cyan: #00abd3;
  --c-blue: #006cd1;
  --ff-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --ff-en: "Montserrat", sans-serif;
  --rail-w: 360px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--ff-jp);
  color: var(--c-black);
  background: var(--c-bg);
  line-height: 1.5;
}
img { max-width: 100%; display: block; }
p, dl, dd, dt, ul, h1, h2, h3 { margin: 0; padding: 0; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: 1000px;
  margin-inline: auto;
  padding-inline: 20px;
}

/* ============ page layout : main + right rail ============ */
.page { display: flex; align-items: stretch; }
.main-col { flex: 1 1 0; min-width: 0; }
.cta-rail {
  flex: 0 0 var(--rail-w);
  background: #fff;
  filter: drop-shadow(0 0 10px rgba(0, 0, 0, .1));
  z-index: 5;
}
.cta-rail__sticky {
  position: sticky;
  top: 0;
  padding: 30px;
  max-height: 100dvb;
  overflow-y: auto;
}

/* ============ header nav ============ */
.nav {
  position: relative;
  z-index: 20;
  background: linear-gradient(90deg, #0c0a0a 0%, #24366d 100%);
  color: var(--c-white);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 80px;
  padding: 8px 20px 8px 50px;
}
.nav__left { display: flex; align-items: center; gap: 60px; min-width: 0; }
.nav__logo { width: 113px; height: 40px; object-fit: contain; }
.nav__links { display: flex; gap: 50px; font-weight: 700; font-size: 16px; white-space: nowrap; }
.nav__links a:hover { opacity: .7; }
.nav__right { display: flex; align-items: stretch; gap: 30px; }

.nav__date {
  display: grid;
  grid-template-columns: auto auto auto;
  grid-template-areas: "year day  dow" "time time time";
  align-items: end;
  column-gap: 4px;
  align-self: center;
  font-weight: 900;
  line-height: 1.2;
  white-space: nowrap;
}
.nav__date-year { grid-area: year; font-size: 22px; }
.nav__date-day  { grid-area: day;  font-size: 31px; }
.nav__date-dow  {
  grid-area: dow;
  font-size: 12.5px;
  color: var(--c-black);
  background: var(--c-white);
  border-radius: 3.8px;
  width: 18px; height: 18px;
  display: grid; place-items: center;
  margin-bottom: 4px;
}
.nav__date-time { grid-area: time; font-size: 22px; }

.nav__badges { display: flex; gap: 10px; flex-shrink: 0; }
.nav__badge {
  border: 2px solid var(--c-accent);
  color: var(--c-accent);
  font-weight: 900;
  font-size: 14px;
  letter-spacing: .1em;
  text-align: center;
  line-height: 1.35;
  display: grid;
  place-items: center;
  padding: 8px 20px;
  min-height: 50px;
  white-space: nowrap;
}
.nav__burger { display: none; }
.nav__drawer { display: none; }

/* ============ hero ============ */
.hero {
  position: relative;
  height: calc(var(--s, 1) * 760px);
  background: var(--c-bg);
  overflow: hidden;
}
/* 1560×760 の設計キャンバスを等比スケール */
.hero__stage {
  position: relative;
  width: 1560px;
  height: 760px;
  transform: scale(var(--s, 1));
  transform-origin: top left;
}
.hero__texture {
  position: absolute; inset: 0;
  background: url("../assets/texture-tile.jpg") top left / 896px 630px repeat;
  mix-blend-mode: multiply;
  opacity: .13;
  pointer-events: none;
}

/* --- decorative & photo diamonds (design coords, 1560px basis) --- */
.hero__art {
  position: absolute;
  top: 0;
  left: 712px;
  width: 1421px;
  height: 760px;
  pointer-events: none;
}
.dia { position: absolute; display: block; }
.dia--navy::before {
  content: "";
  display: block;
  width: 244.8px;
  background: var(--c-main);
  border-radius: 9.5px;
  transform: rotate(-45deg);
}
.dia--a { left: 70.8px; top: -212px; width: 454.8px; height: 454.8px; display: grid; place-items: center; }
.dia--a::before { height: 398.5px; }
.dia--b { left: 542.4px; top: 625.6px; width: 879px; height: 879px; display: grid; place-items: center; }
.dia--b::before { height: 998.3px; }

/* photo diamond tile : 346.16px */
.hd { position: absolute; width: 346.2px; height: 346.2px; }
.hd__shape {
  position: absolute; inset: 0;
  display: grid; place-items: center;
}
.hd__shape::before {
  content: "";
  width: 244.8px; height: 244.8px;
  background: var(--c-cyan);
  border-radius: 9.5px;
  transform: rotate(45deg);
}
.hd img {
  position: absolute;
  left: 71.4px; top: 21.3px;
  width: 274.6px; height: 324.7px;
  object-fit: cover;
  /* 上半分はそのまま・下半分はダイヤ形で切り抜き
     (SVGはdata URIで埋め込み: file://直開きでも外部fetchなしで確実に効く) */
  -webkit-mask-image: linear-gradient(#000, #000), url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='346' height='346' viewBox='0 0 346 346'%3E%3Crect x='50.6' y='50.6' width='244.8' height='244.8' rx='9.5' fill='%23000' transform='rotate(45 173 173)'/%3E%3C/svg%3E");
  mask-image: linear-gradient(#000, #000), url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='346' height='346' viewBox='0 0 346 346'%3E%3Crect x='50.6' y='50.6' width='244.8' height='244.8' rx='9.5' fill='%23000' transform='rotate(45 173 173)'/%3E%3C/svg%3E");
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-size: 100% 152px, 338.3px 338.3px;
  mask-size: 100% 152px, 338.3px 338.3px;
  -webkit-mask-position: 0 0, -67.5px -17.4px;
  mask-position: 0 0, -67.5px -17.4px;
}
.hd__name {
  position: absolute;
  left: 30%; top: 147.9px;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center;
  font-weight: 900;
  font-size: 13.3px;
  letter-spacing: .05em;
  line-height: 1.5;
  color: var(--c-black);
  white-space: nowrap;
  z-index: 2;
}
.hd__name b { font-size: 20.9px; letter-spacing: .05em; }

/* tile positions (relative to .hero__art) */
.hd--t { left: 360.4px; top: 77.7px; }
.hd--m { left: 179.4px; top: 260.6px; }
.hd--c { left: 0;        top: 78.6px; }
.hd--d { left: 360.4px; top: 445.5px; }
.hd--e { left: 549.1px; top: 260.6px; }

/* --- hero copy --- */
.hero__copy {
  position: relative;
  z-index: 3;
  padding: 86px 0 0 100px;
  max-width: 860px;
}
.hero__line1 {
  font-weight: 900;
  font-size: 62px;
  letter-spacing: .01em;
  line-height: 1;
  padding-left: 5px;
}
.hero__line2 {
  position: relative;
  font-weight: 900;
  font-size: 106px;
  letter-spacing: -.02em;
  line-height: 1;
  color: var(--c-accent);
  margin-top: 9px;
  margin-left: -5px;
  white-space: nowrap;
  width: fit-content;
}
.hero__line2-sm { font-size: 82px; }
/* 引用符はデザイン(15:673/15:674)通り、行内に場所を取らず絶対配置で重ねる */
.q {
  position: absolute;
  font-size: 117px;
  line-height: 1;
}
.q--open { left: -78px; top: 44px; transform: rotate(180deg); }
.q--close { right: -79px; top: -3px; }
.hero__line3 {
  font-weight: 900;
  font-size: 62px;
  letter-spacing: .01em;
  line-height: 1;
  margin-top: 10px;
  margin-left: 2px;
  white-space: nowrap;
}
.hero__line3-lg { font-size: 106px; letter-spacing: .01em; }
.hero__sub {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 0;
  font-weight: 900;
  font-size: 23.9px;
  line-height: 1.4;
  margin: 26px 0 0 10px;
  white-space: nowrap;
}
.hero__sub-em {
  background: var(--c-black);
  color: var(--c-white);
  padding: 0 7px;
  margin-inline: 6px;
}

.hero__date {
  display: grid;
  grid-template-columns: auto auto auto;
  grid-template-areas: "year .   ." "day  dow time";
  align-items: end;
  column-gap: 14px;
  margin-top: 34px;
  font-family: var(--ff-en);
  font-weight: 700;
  color: var(--c-main);
  line-height: 1;
  letter-spacing: .01em;
}
.hero__date-year { grid-area: year; font-size: 41px; }
.hero__date-day  { grid-area: day;  font-size: 90px; }
.hero__date-dow {
  grid-area: dow;
  font-family: var(--ff-jp);
  font-weight: 900;
  font-size: 31.7px;
  background: var(--c-main);
  color: var(--c-white);
  width: 45px; height: 45px;
  display: grid; place-items: center;
  margin-bottom: 8px;
}
.hero__date-time { grid-area: time; font-size: 90px; }

.hero__logos {
  display: flex;
  align-items: center;
  gap: 26px;
  width: 690px;
  margin-top: 20px;
  padding-top: 25px;
  border-top: .85px solid var(--c-black);
}
.hero__logo--flued { width: 103.5px; height: 43px; object-fit: contain; }
.hero__logo--eight { width: 130px; height: 34px; object-fit: contain; }
.hero__logo--zoom { width: 103.5px; height: 23.8px; object-fit: contain; }
.hero__logo--immedio { width: 103.5px; height: 23.3px; object-fit: contain; }
.hero__logo--tbd { width: 103.5px; height: 43px; background: #c4c4c4; }

/* ============ SP fixed CTA ============ */
.sp-cta {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 30;
  background: var(--c-accent);
  color: var(--c-white);
  font-weight: 700;
  font-size: 20px;
  text-align: center;
  padding: 26px 20px;
  line-height: 1.2;
}
.sp-cta__arrow {
  position: absolute;
  right: 53px; top: 50%;
  width: 8px; height: 16px;
  transform: translateY(-50%);
}

/* ============ h2 ============ */
.h2 {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}
.h2__en {
  font-family: var(--ff-en);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: .01em;
  line-height: 1;
  color: var(--c-accent);
  text-transform: uppercase;
}
.h2__ja {
  font-weight: 900;
  font-size: 36px;
  line-height: 1.2;
  color: var(--c-black);
}

/* ============ concept ============ */
.concept {
  position: relative;
  background: var(--c-white);
  overflow: hidden;
}
.concept__dia {
  right: -188px;
  top: -134px;
  width: 493.4px; height: 493.4px;
  display: grid; place-items: center;
  left: auto;
}
.concept__dia::before { height: 453px; }
.concept__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 50px;
  padding-block: 60px;
}
.concept__grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
  width: 100%;
}
.info { width: 620px; max-width: 100%; display: flex; flex-direction: column; gap: 5px; }
.info__row { display: flex; gap: 10px; align-items: stretch; }
.info__label {
  flex: 0 0 170px;
  min-height: 50px;
  display: grid;
  place-items: center;
  text-align: center;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .1em;
  color: var(--c-main);
  border-bottom: 1px solid var(--c-main);
  padding: 15px 10px;
}
.info__value {
  flex: 1;
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .05em;
  border-bottom: 1px solid var(--c-line);
  padding-block: 15px;
}
.info__value ul { list-style: disc; padding-left: 24px; }
.concept__illust { width: 340px; height: 200px; object-fit: cover; flex-shrink: 0; }
.concept__lead {
  width: 100%;
  font-weight: 900;
  font-size: 18px;
  letter-spacing: .05em;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  gap: 27px;
}

/* ============ schedule ============ */
.schedule { background: var(--c-bg); }
.schedule .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  padding-block: 60px;
}
.cards {
  display: flex;
  flex-direction: column;
  gap: 50px;
  width: 100%;
}

.card { display: flex; flex-direction: column; }
.card__head { display: flex; align-items: stretch; }
.card__time {
  flex: 0 0 307px;
  min-height: 200px;
  display: grid;
  place-items: center;
  padding: 30px;
  border-top-left-radius: 30px;
  background: linear-gradient(106deg, var(--c-blue) 15%, var(--c-main) 63%);
  color: var(--c-white);
  font-weight: 900;
  font-size: 32px;
  letter-spacing: .05em;
  white-space: nowrap;
}
.card__title {
  flex: 1;
  min-height: 200px;
  display: flex;
  align-items: center;
  padding: 30px 35px;
  background: var(--c-main);
  color: var(--c-white);
  font-weight: 900;
  font-size: 32px;
  letter-spacing: .05em;
  line-height: 1.4;
  text-align: justify;
}
.card__body {
  background: var(--c-white);
  border-bottom-right-radius: 30px;
  padding: 50px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.card__top {
  display: grid;
  grid-template-columns: 1fr 250px;
  grid-template-areas: "profile media" "lists media";
  column-gap: 46px;
  row-gap: 40px;
}
.card__profile { grid-area: profile; font-weight: 900; line-height: 1.5; display: flex; flex-direction: column; gap: 5px; }
.card__company { font-size: 26px; letter-spacing: .05em; }
.card__position { font-size: 18px; letter-spacing: .05em; }
.card__speaker { font-size: 26px; letter-spacing: .05em; }
.card__lists { grid-area: lists; display: flex; flex-direction: column; gap: 20px; }
.card__media {
  grid-area: media;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
  width: 250px;
}
.card__photo {
  width: 250px; height: 250px;
  object-fit: cover;
  -webkit-mask-image: linear-gradient(to bottom, #000 71.6%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 71.6%, transparent 100%);
}
.card__photo--tbd { background: #c4c4c4; display: block; }
.card__logo { width: 119px; height: 50px; object-fit: contain; }
.card__logo--tbd { background: #c4c4c4; display: block; }

.list {
  display: flex;
  flex-direction: column;
  gap: 15px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--c-line);
}
.list__ttl {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 18px;
  letter-spacing: .05em;
  color: var(--c-main);
}
.list__ttl img { width: 22px; height: 22px; }
.list p {
  font-weight: 500;
  font-size: 14px;
  letter-spacing: .02em;
  line-height: 1.5;
}
.list p + p { margin-top: 21px; }
.list--full { width: 100%; }

/* ============ form (CTA rail & entry section) ============ */
.form-heading {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 13px;
  font-weight: 900;
  font-size: 22px;
  line-height: 1.2;
  color: var(--c-main);
  margin-bottom: 30px;
}
.form-heading__line {
  width: 2px; height: 22px;
  background: var(--c-main);
  border-radius: 2px;
  transform: rotate(-29deg);
  margin-bottom: 2px;
}
.form-heading__line--r { transform: rotate(29deg); }

/* placeholder form (HubSpot ID設定前) + HubSpot form 共通見た目 */
.ph-form { display: flex; flex-direction: column; gap: 15px; }
.ph-form__row { display: flex; gap: 20px; }
.ph-form__row .ph-form__label { flex: 1; }
.ph-form__label {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-weight: 700;
  font-size: 14px;
  color: #000;
}
.ph-form__input {
  height: 40px;
  background: #f4f4f4;
  border: none;
  border-radius: 2px;
  padding: 0 12px;
  font: inherit;
}
.ph-form__input:focus { outline: 2px solid var(--c-main); }
.ph-form__check {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #000;
  margin-top: 3px;
}
.ph-form__check a { text-decoration: underline; }
.ph-form__check input { width: 18px; height: 18px; accent-color: var(--c-main); }
.ph-form__submit {
  height: 65px;
  border: none;
  border-radius: 100px;
  background: var(--c-accent);
  color: #fff;
  font-family: var(--ff-jp);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: .2em;
  cursor: pointer;
  margin-top: 3px;
  transition: opacity .2s;
}
.ph-form__submit:hover { opacity: .85; }

/* HubSpot 埋め込みフォームをデザインに合わせる */
.hs-form-slot .hs-form label { font-weight: 700; font-size: 14px; color: #000; }
.hs-form-slot .hs-form .hs-form-field { margin-bottom: 15px; }
.hs-form-slot .hs-form .hs-input:not([type="checkbox"]):not([type="radio"]) {
  width: 100%;
  height: 40px;
  background: #f4f4f4;
  border: none;
  border-radius: 2px;
  padding: 0 12px;
  font: inherit;
  margin-top: 10px;
}
.hs-form-slot .hs-form .hs-button {
  width: 100%;
  height: 65px;
  border: none;
  border-radius: 100px;
  background: var(--c-accent);
  color: #fff;
  font-family: var(--ff-jp);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: .2em;
  cursor: pointer;
}
.hs-form-slot .hs-form .hs-error-msgs,
.hs-form-slot .hs-form .hs-error-msg { color: var(--c-accent); font-size: 12px; list-style: none; padding: 0; }
.hs-form-slot .hs-form .legal-consent-container { font-size: 13px; }

/* entry section (SP/narrow inline form) */
.entry { display: none; background: var(--c-bg); padding: 60px 20px; }
.entry__panel {
  max-width: 480px;
  margin-inline: auto;
  background: #fff;
  box-shadow: 0 0 10px rgba(0, 0, 0, .1);
  padding: 30px;
}

/* ============ footer ============ */
.footer {
  position: relative;
  background: var(--c-main);
  color: var(--c-white);
}
.footer::before {
  content: "";
  position: absolute; inset: 0;
  background: url("../assets/texture-tile.jpg") top left / 896px 630px repeat;
  mix-blend-mode: multiply;
  opacity: .4;
  pointer-events: none;
}
.footer__inner {
  position: relative;
  display: flex;
  align-items: flex-end;
  gap: 30px;
  padding-block: 50px;
}
.footer__links { flex: 1; display: flex; flex-direction: column; gap: 20px; }
.footer__ttl { font-weight: 900; font-size: 18px; letter-spacing: .05em; }
.footer__lu {
  display: flex;
  flex-wrap: wrap;
  gap: 15px 30px;
  max-width: 550px;
}
.footer__lu a {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-weight: 500;
  font-size: 16px;
}
.footer__lu a:hover { text-decoration: underline; }
.footer__arrow { width: 9px; height: 13px; margin-top: 3px; fill: var(--c-white); flex-shrink: 0; }
.footer__copy { font-size: 10px; font-weight: 500; white-space: nowrap; }

/* ============================================================
   responsive
============================================================ */

@media (max-width: 1360px) {
  .nav__links { gap: 30px; }
  .nav__inner { padding-left: 30px; }
  .nav__left { gap: 30px; }
}
/* レール併存時にナビが窮屈になる帯域では日時を隠す */
@media (max-width: 1560px) {
  .nav__date { display: none; }
}

/* --- レール非表示 → インラインフォーム + 固定CTA --- */
@media (max-width: 1279px) {
  .cta-rail { display: none; }
  .entry { display: block; }
  .sp-cta { display: block; }
  body { padding-bottom: 76px; } /* fixed CTA分 */
}

/* --- タブレット --- */
@media (max-width: 1100px) {
  .nav__date, .nav__badges { display: none; }
  .nav__burger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 7px;
    width: 44px; height: 44px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
  }
  .nav__burger span { display: block; height: 2px; background: var(--c-white); border-radius: 2px; }
  .nav__drawer {
    display: flex;
    flex-direction: column;
    background: var(--c-main);
    overflow: hidden;
    max-height: 0;
    transition: max-height .25s ease;
  }
  .nav__drawer.is-open { max-height: 240px; }
  .nav__drawer a {
    padding: 16px 24px;
    font-weight: 700;
    border-top: 1px solid rgba(253, 253, 253, .15);
  }

  .hero { height: auto; padding-bottom: 0; }
  .hero__stage {
    width: auto;
    height: auto;
    transform: none;
    display: flex;
    flex-direction: column;
  }
  .hero__copy { order: 1; padding: 50px 30px 0; max-width: none; }
  .hero__line1 { font-size: clamp(28px, 6.5vw, 52px); }
  .hero__line2 { font-size: clamp(46px, 11vw, 90px); margin-left: 0; }
  .hero__line2-sm { font-size: clamp(36px, 8.5vw, 70px); }
  .q { font-size: clamp(50px, 12vw, 100px); }
  .q--open { left: -.35em; top: .32em; transform: rotate(180deg); }
  .q--close { right: -.55em; top: -.03em; }
  .hero__line3 { font-size: clamp(28px, 6.5vw, 52px); }
  .hero__line3-lg { font-size: clamp(46px, 11vw, 90px); }
  .hero__sub { font-size: clamp(13px, 3vw, 22px); white-space: normal; }
  .hero__date { margin-top: 24px; column-gap: 10px; }
  .hero__date-year { font-size: clamp(20px, 4.6vw, 38px); }
  .hero__date-day { font-size: clamp(30px, 8.6vw, 84px); }
  .hero__date-time { font-size: clamp(30px, 8.6vw, 84px); white-space: nowrap; }
  .hero__date-dow { width: clamp(22px, 5vw, 42px); height: clamp(22px, 5vw, 42px); font-size: clamp(14px, 3.5vw, 30px); }
  .hero__logos { width: 100%; max-width: 690px; flex-wrap: wrap; gap: 18px; }

  /* アートは通常フローで下に配置し、段階スケール */
  .hero__art {
    order: 2;
    position: relative;
    left: auto; top: auto;
    margin-top: 20px;
    width: 900px;
    height: 665px;
    margin-left: calc(50vw - 358px);
    transform: scale(.8);
    transform-origin: top left;
  }
  .dia--a { display: none; }
  .concept__dia { transform: scale(.55); transform-origin: top right; }
}
@media (max-width: 800px) {
  .hero__art {
    height: 460px;
    margin-left: calc(50vw - 246px);
    transform: scale(.55);
  }
}
@media (max-width: 500px) {
  .hero__art {
    height: 352px;
    margin-left: calc(50vw - 188px);
    transform: scale(.42);
  }

  .card__head { flex-direction: column; }
  .card__time {
    flex: none;
    min-height: 0;
    padding: 15px;
    font-size: 24px;
    border-bottom: 1px solid var(--c-white);
  }
  .card__title {
    min-height: 0;
    font-size: 18px;
    padding: 30px 15px;
    justify-content: center;
  }
  .card__body { padding: 25px 15px 15px; }
  .card__top {
    grid-template-columns: 1fr;
    grid-template-areas: "profile" "media" "lists";
    row-gap: 20px;
  }
  .card__profile { text-align: center; gap: 0; }
  .card__company { font-size: 18px; }
  .card__position { font-size: 14px; font-weight: 500; }
  .card__speaker { font-size: 20px; }
  .card__media {
    width: 100%;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 20px;
  }
  .card__photo, .card__photo--tbd { width: 188px; height: 150px; object-fit: contain; object-position: bottom; }
  .list__ttl { font-size: 16px; }
  .list__ttl img { width: 18px; height: 18px; }
}

/* --- スマホ --- */
@media (max-width: 700px) {
  /* SPヘッダー(15:687): ネイビー単色バー + ロゴ / 日時 / ハンバーガー */
  .nav { background: var(--c-main); }
  .nav__inner { min-height: 73px; padding: 8px 12px 8px 20px; }
  .nav__logo { width: 97px; height: 34px; }
  .nav__links { display: none; }
  .nav__date {
    display: grid;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    column-gap: 3px;
  }
  .nav__date-year { font-size: 10px; }
  .nav__date-day { font-size: 15px; }
  .nav__date-time { font-size: 10px; }
  .nav__date-dow { width: 9px; height: 9px; font-size: 6px; border-radius: 1.7px; margin-bottom: 2px; color: var(--c-main); }

  .hero__copy { padding: 36px 20px 0; }
  .hero__logos { gap: 14px; padding-top: 18px; }
  .hero__logo--flued { width: 76px; height: 32px; }
  .hero__logo--zoom { width: 76px; }
  .hero__logo--immedio { width: 76px; }
  .hero__logo--tbd { width: 76px; height: 32px; }

  .h2__en { font-size: 18px; }
  .h2__ja { font-size: 26px; }

  /* SPデザイン(15:703)の並び: h2 → イラスト → リード文 → 開催情報 */
  .concept__inner { gap: 30px; }
  .concept__grid { display: contents; }
  .h2 { order: 0; }
  .concept__illust { order: 1; width: 100%; height: auto; }
  .concept__lead { order: 2; }
  .info { order: 3; width: 100%; }
  .info__row { flex-direction: column; gap: 10px; }
  .info__label {
    min-height: 0;
    padding: 0;
    border-bottom: none;
    display: block;
    text-align: left;
  }
  .info__value { font-weight: 500; font-size: 14px; padding-block: 0 10px; }
  .concept__lead { font-weight: 500; font-size: 14px; gap: 0; }
  .concept__dia { right: -260px; }

  .footer__inner { flex-direction: column; align-items: center; gap: 30px; }
  .footer__links { align-items: center; }
  .footer__lu { justify-content: flex-start; }

  .sp-cta { padding: 22px 16px; }
}