/* AI活用体験セミナー（2026-06-18 開催・終了済み）のLP専用スタイル
   2026-08-03 に ai-seminar-20260618.php の <style> から外出しした。
   会期は終了しているが、ページ自体は記録として残している。
   次回セミナーを開催する際は、このCSSごと複製して日付を差し替えるのが早い。 */

:root {
    --color-primary: #2E7D32;
    --color-primary-dark: #1B5E20;
    --color-primary-deep: #0F1F12;
    --color-accent: #c23400;
    --color-accent-dark: #E55A2B;
    --color-yellow: #FFE082;
    --color-text: #1A1A1A;
    --color-text-light: #5C5C5C;
    --color-bg: #FFFFFF;
    --color-bg-cream: #FAF7F2;
    --color-bg-dark: #0F1F12;
    --color-border: #2C2C2C;
    --color-border-light: #E5E0D8;
    --serif: 'Cormorant Garamond', serif;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: 'Noto Sans JP', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
    color: var(--color-text);
    line-height: 1.8;
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; height: auto; display: block; }
  .container { max-width: 1100px; margin: 0 auto; padding: 0 40px; }
  @media (max-width: 768px) { .container { padding: 0 20px; } }

  /* ============================
     ヒーロー
     ============================ */
  .hero {
    background: var(--color-bg-dark);
    color: #fff;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
  .hero-top {
    padding: 24px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    font-weight: 500;
  }
  .hero-top .brand {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .hero-top .brand img { height: 28px; width: auto; }
  .hero-top .brand-text {
    color: #FFE082;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
  }
  .hero-top .for-exec {
    border: 1px solid rgba(255,255,255,0.4);
    padding: 4px 12px;
    border-radius: 2px;
    letter-spacing: 0.15em;
    font-size: 0.7rem;
    text-transform: uppercase;
  }
  .hero-body {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: 60px 40px;
    gap: 40px;
    position: relative;
  }
  .hero-body::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 10%;
    bottom: 10%;
    width: 1px;
    background: rgba(255,255,255,0.15);
  }
  .hero-date-label {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.1rem;
    color: var(--color-yellow);
    margin-bottom: 16px;
  }
  .hero-date-big {
    font-size: clamp(5rem, 14vw, 11rem);
    font-weight: 900;
    line-height: 0.85;
    letter-spacing: -0.04em;
  }
  .hero-date-big .month { font-size: 0.5em; vertical-align: top; color: var(--color-yellow); }
  .hero-date-sub {
    margin-top: 16px;
    font-size: 1rem;
    color: rgba(255,255,255,0.7);
    letter-spacing: 0.1em;
  }
  .hero-date-sub strong { color: #fff; font-weight: 700; }
  .hero-tag {
    display: inline-block;
    background: var(--color-accent);
    color: #fff;
    padding: 4px 14px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 24px;
  }
  .hero h1 {
    font-size: clamp(1.5rem, 3.5vw, 2.4rem);
    font-weight: 900;
    line-height: 1.35;
    margin-bottom: 20px;
    letter-spacing: -0.01em;
  }
  .hero h1 .accent {
    background: linear-gradient(transparent 60%, rgba(255,224,130,0.4) 60%);
    padding: 0 4px;
  }
  .hero-sub {
    font-size: clamp(0.95rem, 1.6vw, 1.05rem);
    line-height: 1.8;
    color: rgba(255,255,255,0.85);
    margin-bottom: 32px;
    max-width: 420px;
  }
  .hero-bottom {
    background: rgba(0,0,0,0.3);
    border-top: 1px solid rgba(255,255,255,0.15);
    padding: 24px 40px;
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
  }
  .hero-bottom .item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.9rem;
  }
  .hero-bottom .label {
    font-size: 0.7rem;
    color: var(--color-yellow);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    font-weight: 700;
  }
  .hero-bottom .value { font-weight: 700; }

  /* ============================
     CTAボタン
     ============================ */
  .cta {
    display: inline-block;
    background: var(--color-accent);
    color: #fff !important;
    text-decoration: none;
    padding: 18px 40px;
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    position: relative;
  }
  .cta::after {
    content: '→';
    margin-left: 12px;
    transition: transform 0.2s ease;
  }
  .cta:hover {
    background: var(--color-accent-dark);
  }
  .cta:hover::after {
    transform: translateX(6px);
  }
  .cta-outline {
    background: transparent;
    border: 2px solid #fff;
    color: #fff !important;
  }
  .cta-outline:hover {
    background: #fff;
    color: var(--color-bg-dark) !important;
  }

  /* ============================
     セクション共通（エディトリアル）
     ============================ */
  section { padding: 100px 0; position: relative; }
  .section-num {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.1rem;
    color: var(--color-accent);
    letter-spacing: 0.1em;
    margin-bottom: 8px;
  }
  .section-num::before {
    content: '— ';
  }
  .section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 900;
    line-height: 1.4;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
  }
  .section-lead {
    color: var(--color-text-light);
    font-size: 1rem;
    margin-bottom: 56px;
    max-width: 600px;
  }
  .section-head {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    margin-bottom: 56px;
    align-items: end;
    border-bottom: 2px solid var(--color-text);
    padding-bottom: 32px;
  }
  .section-head-left .section-num { margin-bottom: 4px; }
  .section-head-right .section-lead { margin-bottom: 0; }
  @media (max-width: 768px) {
    section { padding: 70px 0; }
    .section-head { grid-template-columns: 1fr; gap: 12px; padding-bottom: 24px; margin-bottom: 40px; }
  }

  /* ============================
     セクション1：悩み
     ============================ */
  .worries-section { background: var(--color-bg-cream); }
  .worries-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    border-top: 1px solid var(--color-border-light);
    border-left: 1px solid var(--color-border-light);
  }
  .worries-list li {
    list-style: none;
    padding: 28px 24px;
    border-right: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
    background: #fff;
    position: relative;
    padding-left: 64px;
    font-size: 1rem;
    line-height: 1.7;
  }
  .worries-list li::before {
    content: attr(data-num);
    position: absolute;
    left: 24px;
    top: 28px;
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.4rem;
    color: var(--color-accent);
    font-weight: 700;
  }
  .worries-conclusion {
    margin-top: 48px;
    padding: 32px;
    background: var(--color-bg-dark);
    color: #fff;
    text-align: center;
    font-weight: 500;
    line-height: 1.9;
    font-size: 1.05rem;
  }
  .worries-conclusion strong {
    color: var(--color-yellow);
    font-weight: 700;
  }
  @media (max-width: 768px) {
    .worries-list { grid-template-columns: 1fr; }
  }

  /* ============================
     セクション2：価値
     ============================ */
  .value-section { background: var(--color-bg); }
  .value-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    border-top: 2px solid var(--color-text);
  }
  .value-card {
    padding: 40px 32px 40px 0;
    border-bottom: 1px solid var(--color-border-light);
    position: relative;
  }
  .value-card:nth-child(odd) { border-right: 1px solid var(--color-border-light); padding-right: 40px; }
  .value-card:nth-child(even) { padding-left: 40px; }
  .value-card-num {
    font-family: var(--serif);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 16px;
    font-style: italic;
  }
  .value-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
  }
  .value-card p { color: var(--color-text-light); font-size: 0.95rem; line-height: 1.8; }
  @media (max-width: 768px) {
    .value-grid { grid-template-columns: 1fr; }
    .value-card { padding: 32px 0 !important; border-right: none !important; }
  }

  /* ============================
     セクション3：プログラム
     ============================ */
  .program-section { background: var(--color-bg-cream); }
  .program-list { border-top: 2px solid var(--color-text); }
  .program-item {
    display: grid;
    grid-template-columns: 120px 1fr 100px;
    gap: 32px;
    padding: 32px 0;
    border-bottom: 1px solid var(--color-border-light);
    align-items: start;
  }
  .program-item-num {
    font-family: var(--serif);
    font-style: italic;
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
  }
  .program-item-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
  }
  .program-item-body p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.8;
  }
  .program-item-body ul {
    margin-top: 8px;
    padding-left: 0;
    list-style: none;
    color: var(--color-text-light);
    font-size: 0.95rem;
  }
  .program-item-body li {
    padding: 4px 0 4px 18px;
    position: relative;
  }
  .program-item-body li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-primary);
  }
  .program-item-time {
    font-family: var(--serif);
    font-style: italic;
    color: var(--color-text-light);
    font-size: 1rem;
    text-align: right;
    padding-top: 8px;
  }
  .program-cta {
    text-align: center;
    margin-top: 56px;
  }
  @media (max-width: 768px) {
    .program-item {
      grid-template-columns: 60px 1fr;
      gap: 16px;
    }
    .program-item-num { font-size: 2rem; }
    .program-item-time {
      grid-column: 2;
      text-align: left;
      margin-top: 8px;
      font-size: 0.85rem;
    }
  }

  /* ============================
     セクション4：講師（マガジン風）
     ============================ */
  .speaker-section { background: var(--color-bg-dark); color: #fff; padding: 100px 0; }
  .speaker-section .container { max-width: 1100px; padding: 0 40px; }
  .speaker-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 56px;
    align-items: start;
    margin-top: 16px;
  }
  .speaker-section .section-head {
    border-bottom-color: rgba(255,255,255,0.3);
  }
  .speaker-photo {
    width: 100%;
    aspect-ratio: 3 / 4;
    background-size: cover;
    background-position: center 20%;
    background-color: #1a2a1d;
    border: 1px solid rgba(255,255,255,0.1);
  }
  .speaker-content {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
  }
  .speaker-section .section-num { color: var(--color-yellow); }
  .speaker-section .section-title { color: #fff; }
  .speaker-section .section-lead { color: rgba(255,255,255,0.75); }
  .speaker-name {
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: 4px;
    color: #fff;
  }
  .speaker-name small {
    display: block;
    font-family: var(--serif);
    font-style: italic;
    font-size: 1rem;
    color: var(--color-yellow);
    font-weight: 400;
    margin-top: 4px;
  }
  .speaker-title {
    color: var(--color-yellow);
    font-weight: 700;
    margin: 16px 0 8px;
    font-size: 1rem;
  }
  .speaker-cred {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 28px;
    line-height: 1.7;
  }
  .speaker-bio {
    margin-bottom: 28px;
  }
  .speaker-bio ul { list-style: none; padding: 0; }
  .speaker-bio li {
    padding: 8px 0 8px 20px;
    position: relative;
    font-size: 0.95rem;
    color: rgba(255,255,255,0.9);
    line-height: 1.7;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .speaker-bio li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-yellow);
  }
  .speaker-quote {
    border-left: 3px solid var(--color-yellow);
    padding: 8px 20px;
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.05rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.95);
  }
  @media (max-width: 768px) {
    .speaker-section { padding: 70px 0; }
    .speaker-grid { grid-template-columns: 1fr; gap: 32px; }
    .speaker-photo { max-width: 220px; aspect-ratio: 3 / 4; }
  }

  /* ============================
     セクション5：開催概要
     ============================ */
  .info-section { background: var(--color-bg); }
  .info-list {
    border-top: 2px solid var(--color-text);
  }
  .info-row {
    display: grid;
    grid-template-columns: 180px 1fr;
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border-light);
    gap: 32px;
  }
  .info-row dt {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1rem;
    color: var(--color-text-light);
    letter-spacing: 0.05em;
  }
  .info-row dd { margin: 0; font-size: 1rem; font-weight: 500; }
  .info-row dd small { color: var(--color-text-light); font-size: 0.85rem; display: block; margin-top: 4px; }
  .info-row dd .free {
    display: inline-block;
    background: var(--color-accent);
    color: #fff;
    padding: 2px 12px;
    font-weight: 700;
    font-size: 0.95rem;
  }
  @media (max-width: 768px) {
    .info-row { grid-template-columns: 100px 1fr; gap: 16px; padding: 16px 0; }
    .info-row dt, .info-row dd { font-size: 0.9rem; }
  }
  .venue-map {
    margin-top: 56px;
    border: 1px solid var(--color-border-light);
  }
  .venue-map-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border-light);
    background: var(--color-bg-cream);
  }
  .venue-map-head .label {
    font-family: var(--serif);
    font-style: italic;
    color: var(--color-accent);
    font-size: 1rem;
  }
  .venue-map-head .label::before { content: '— '; }
  .venue-map-head .addr {
    font-size: 0.85rem;
    color: var(--color-text-light);
  }
  .venue-map iframe {
    display: block;
    width: 100%;
    height: 400px;
    border: 0;
  }
  @media (max-width: 768px) {
    .venue-map { margin-top: 40px; }
    .venue-map-head { flex-direction: column; align-items: flex-start; gap: 4px; padding: 14px 16px; }
    .venue-map iframe { height: 320px; }
  }

  /* ============================
     セクション6：FAQ
     ============================ */
  .faq-section { background: var(--color-bg-cream); }
  .faq-list { border-top: 2px solid var(--color-text); }
  .faq-item {
    border-bottom: 1px solid var(--color-border-light);
  }
  .faq-q {
    padding: 24px 0;
    cursor: pointer;
    font-weight: 700;
    display: grid;
    grid-template-columns: 60px 1fr 30px;
    gap: 16px;
    align-items: center;
    list-style: none;
    user-select: none;
    font-size: 1.05rem;
  }
  .faq-q::-webkit-details-marker { display: none; }
  .faq-q-num {
    font-family: var(--serif);
    font-style: italic;
    color: var(--color-accent);
    font-size: 1.2rem;
    font-weight: 700;
  }
  .faq-q-icon {
    text-align: right;
    color: var(--color-text-light);
    font-weight: 300;
    font-size: 1.4rem;
    transition: transform 0.2s ease;
  }
  details[open] .faq-q-icon { transform: rotate(45deg); }
  .faq-a {
    padding: 0 30px 24px 76px;
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.9;
  }
  @media (max-width: 768px) {
    .faq-q { grid-template-columns: 40px 1fr 24px; font-size: 0.95rem; }
    .faq-q-num { font-size: 1rem; }
    .faq-a { padding: 0 24px 20px 56px; }
  }

  /* ============================
     セクション7：最終CTA
     ============================ */
  .final-cta {
    background: var(--color-bg-dark);
    color: #fff;
    padding: 120px 20px;
    position: relative;
    overflow: hidden;
  }
  .final-cta::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: rgba(255,255,255,0.2);
  }
  .final-cta-inner {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    position: relative;
  }
  .final-cta .section-num {
    color: var(--color-yellow);
    margin-bottom: 16px;
  }
  .final-cta h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    line-height: 1.3;
    margin-bottom: 24px;
    color: #fff;
    letter-spacing: -0.01em;
  }
  .final-cta .urgency {
    display: inline-block;
    border: 1px solid var(--color-yellow);
    color: var(--color-yellow);
    padding: 6px 18px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 32px;
  }
  .final-cta p { margin-bottom: 32px; color: rgba(255,255,255,0.85); }
  .final-cta-mail {
    margin-top: 32px;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
  }
  .final-cta-mail a { color: var(--color-yellow); }

  /* ============================
     クロージング
     ============================ */
  .closing {
    background: var(--color-bg);
    padding: 100px 20px;
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
  }
  .closing-inner { max-width: 640px; margin: 0 auto; }
  .closing-lead {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.3rem;
    color: var(--color-accent);
    margin-bottom: 24px;
  }
  .closing p {
    color: var(--color-text);
    font-size: 1.05rem;
    line-height: 2.1;
    margin-bottom: 16px;
  }
  .closing .sign {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border-light);
    font-weight: 700;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 16px;
  }
  .closing .sign img { height: 32px; width: auto; }

  /* ============================
     フッター
     ============================ */
  footer {
    background: var(--color-bg-dark);
    color: rgba(255,255,255,0.6);
    padding: 40px 20px;
    text-align: center;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
  }
  footer img {
    height: 28px;
    width: auto;
    margin: 0 auto 16px;
    opacity: 0.9;
  }
  footer a { color: var(--color-yellow); text-decoration: underline; }

  /* ============================
     ヒーロー（モバイル）
     ============================ */
  @media (max-width: 768px) {
    .hero { min-height: auto; }
    .hero-top { padding: 16px 20px; font-size: 0.7rem; }
    .hero-top .brand img { height: 22px; }
    .hero-top .brand-text { font-size: 0.65rem; }
    .hero-top .for-exec { font-size: 0.6rem; padding: 3px 8px; }
    .hero-body {
      grid-template-columns: 1fr;
      padding: 40px 24px;
      gap: 32px;
    }
    .hero-body::before { display: none; }
    .hero-date-big { font-size: clamp(4.5rem, 22vw, 7rem); }
    .hero-bottom { padding: 20px 24px; gap: 20px; }
    .cta { padding: 16px 32px; font-size: 1rem; width: 100%; max-width: 320px; }
  }