/* =========================================================
   BANK SUMMIT 2024 — 理想サイト（STUDIO製）完全再現クローン
   + BANK SUMMIT 2026（現行版）専用セクションを下部に追加
   Source: ideal_spec.md（実測仕様書）
   ========================================================= */

:root {
  --bg: #F0F0F0;
  --body-text: #333333;
  --heading: #1B1B1B;
  --strong-black: #000000;
  --white: #FFFFFF;
  --muted-666: #666666;
  --muted-555: #555555;
  --muted-777: #777777;
  --dark-band: #1B1B1B;
  --hairline: #D2D2D2;
  --footer-copyright: #F0F0F0;

  --font-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-en: "Inter", "Noto Sans JP", sans-serif;

  --content-max: 1280px;
  --content-pad: 40px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 40px;
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--body-text);
  font-family: var(--font-jp);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

[hidden] {
  display: none !important;
}

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-jp);
  color: var(--heading);
}

p {
  margin: 0;
}

ul, dl {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* container: 1440px viewport 時に left:120 / right:120（幅1200px相当）になる計算式 */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--content-pad);
}

.material-icons {
  font-size: 18px;
  vertical-align: -3px;
  line-height: 1;
}

/* =========================================================
   Header（ideal_spec.md §2.1）
   ========================================================= */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(0, 0, 0, 0);
}

.header-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 24px var(--content-pad) 0;
}

/* ヘッダー内ロゴSVGは白fillで元々ほぼ不可視のため省略（spec §2.1）。
   代わりにアクセシビリティ用の視覚的に隠れたブランドテキストのみ残す。 */
.header-brand {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-list {
  display: flex;
  flex-direction: row;
  gap: 24px;
}

.nav-list a {
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 400;
  color: var(--body-text);
}

.nav-list a:hover {
  opacity: 0.6;
}

.btn-header-cta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: var(--white);
  color: #333333;
  border: 1px solid var(--white);
  border-radius: 4px;
  padding: 16px 32px;
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 400;
  white-space: nowrap;
  transition: opacity 0.2s ease;
}

.btn-header-cta .material-icons {
  font-size: 18px;
}

.btn-header-cta:hover {
  opacity: 0.8;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 1px;
  background-color: var(--heading);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* =========================================================
   Hero（ideal_spec.md §2.2）
   ========================================================= */

.hero {
  position: relative;
  min-height: 497px;
  padding-top: 40px;
  padding-bottom: 80px;
  background-color: var(--bg);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("https://images.unsplash.com/photo-1521459467264-802e2ef3141f?crop=entropy&cs=tinysrgb&fit=max&fm=jpg&ixid=M3w2MzQ2fDB8MXxzZWFyY2h8MTl8fFRleHR1cmV8ZW58MHx8fHwxNzI3NTIwNzk3fDA&ixlib=rb-4.0.3&q=80&w=1080");
  background-size: cover;
  background-position: 50% 50%;
  opacity: 0.16;
}

.hero-inner {
  position: relative;
  padding-top: 56px;
}

.hero-bar {
  width: 100%;
  max-width: 1200px;
  height: 8px;
  background-color: var(--heading);
  margin-bottom: 32px;
}

.hero-wordmark {
  width: 427px;
  max-width: 100%;
  height: auto;
  margin-bottom: 24px;
}

.hero-subcopy {
  font-size: 20px;
  font-weight: 600;
  line-height: 36px;
  letter-spacing: -0.4px;
  color: var(--heading);
}

.hero-subcopy__break {
  display: none;
}

/* =========================================================
   スポンサーロゴ帯（マーキー）ideal_spec.md §2.3
   ========================================================= */

.sponsor-bar {
  height: 100px;
  background-color: var(--white);
  overflow: hidden;
}

/* flexトラック方式のマーキー。<li class="logo-item"><img></li> を横並びにし、
   セットA+セットB（同じ並びの複製）をtranslateX(-50%)でループさせる。
   ロゴを追加してもtranslateXは常に-50%でよいため、追加のたびにCSSを
   触る必要はない（HTML側にA・B両方へ<li>を足すだけ）。 */
.sponsor-track {
  display: flex;
  align-items: center;
  height: 100px;
  width: max-content;
  animation: logoMarquee 30s linear infinite;
}

.logo-item {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 64px;
}

.logo-item img {
  height: 36px;
  width: auto;
  display: block;
}

@keyframes logoMarquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .sponsor-track {
    animation: none;
  }
}

/* =========================================================
   Split section（INTRODUCE〜NEWS 共通の2カラム構造）
   sticky左カラム(top:160px) + 右カラム本文
   ideal_spec.md §2「全セクション共通」
   ========================================================= */

.split-section {
  padding-top: 160px;
  background-color: var(--bg);
}

.split-section--light {
  border-top: 1px solid var(--hairline);
}

.split-section__grid {
  display: grid;
  grid-template-columns: 592px 1fr;
  column-gap: 0;
  padding-bottom: 120px;
}

.split-section__aside {
  position: relative;
}

.split-section__sticky {
  position: sticky;
  top: 160px;
}

.split-section__wordmark-img {
  display: block;
  height: auto;
  margin-bottom: 8px;
}

/* Part2用：SVGワードマークが無いセクションはInter 800/900のテキストで代替 */
.split-section__wordmark-text {
  font-family: var(--font-en);
  font-weight: 900;
  font-size: 28px;
  letter-spacing: -0.02em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--heading);
  margin: 0 0 8px;
}

.split-section__jp {
  font-size: 16px;
  font-weight: 600;
  line-height: 28.8px;
  letter-spacing: -0.8px;
  color: var(--heading);
  margin: 0;
}

.split-section__content {
  min-width: 0;
}

.hairline {
  border: none;
  border-top: 1px solid var(--hairline);
  width: 100%;
  max-width: 600px;
  margin: 40px 0;
}

.hairline--speaker {
  margin: 32px 0;
}

/* =========================================================
   INTRODUCE
   ========================================================= */

.intro-content p {
  font-size: 20px;
  font-weight: 600;
  line-height: 44px;
  letter-spacing: -0.4px;
  color: var(--heading);
  margin-bottom: 44px;
}

.intro-content p:last-child {
  margin-bottom: 0;
}

/* =========================================================
   TIMETABLE & SESSION
   ========================================================= */

.timeslot__time {
  font-size: 16px;
  font-weight: 600;
  line-height: 28.8px;
  color: var(--heading);
  margin-bottom: 16px;
}

.timeslot__body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
}

.category-tag {
  display: inline-flex;
  align-items: center;
  background-color: var(--dark-band);
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
  line-height: 27px;
  padding: 0 8px;
}

.timeslot__title {
  font-size: 22px;
  font-weight: 400;
  line-height: 30.8px;
  color: var(--heading);
}

.timeslot__duration {
  font-weight: 400;
  color: var(--muted-555);
  font-size: 18px;
}

.speaker-card {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  width: 100%;
}

.speaker-card__photo {
  width: 120px;
  height: 120px;
  flex-shrink: 0;
  object-fit: cover;
  border-radius: 0;
  background-color: #ddd;
}

.speaker-card__info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 2px;
}

.speaker-card__role {
  font-size: 13px;
  font-weight: 400;
  line-height: 18.2px;
  color: var(--body-text);
}

.speaker-card__name {
  font-size: 18px;
  font-weight: 400;
  line-height: 25.2px;
  color: var(--body-text);
  margin-bottom: 4px;
}

.speaker-card__bio {
  font-size: 14px;
  font-weight: 400;
  line-height: 19.6px;
  color: var(--muted-555);
  margin-bottom: 4px;
}

.speaker-card__link {
  font-size: 13px;
  font-weight: 400;
  line-height: 18.2px;
  color: var(--heading);
  text-decoration: underline;
  width: fit-content;
}

.speaker-card__link:hover {
  opacity: 0.6;
}

/* =========================================================
   OUTLINE
   ========================================================= */

.outline-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
}

.outline-row__label {
  font-size: 14px;
  font-weight: 600;
  line-height: 25.2px;
  letter-spacing: -0.28px;
  color: var(--muted-666);
}

.outline-row__value {
  font-size: 20px;
  font-weight: 600;
  line-height: 32px;
  letter-spacing: -0.4px;
  color: var(--heading);
}

.outline-row__value--list p {
  font-size: 16px;
  font-weight: 600;
  line-height: 28px;
  letter-spacing: -0.3px;
  color: var(--heading);
}

.outline-row__note {
  display: inline-block;
  margin-top: 4px;
  font-size: 14px;
  font-weight: 400;
  color: var(--muted-666);
  letter-spacing: 0;
}

.outline-link {
  text-decoration: underline;
  word-break: break-all;
}

.outline-link:hover {
  opacity: 0.6;
}

.maplink {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  margin-left: 12px;
  font-size: 16px;
  font-weight: 400;
  color: #333333;
  text-decoration: underline;
  vertical-align: middle;
}

.maplink:hover {
  opacity: 0.6;
}

.outline-map {
  display: block;
  width: 100%;
  max-width: 560px;
  height: 260px;
  border: 0;
  margin-top: 20px;
  filter: grayscale(0.15);
}

/* =========================================================
   PARTNER
   ========================================================= */

.partner-heading {
  font-size: 20px;
  font-weight: 400;
  line-height: 20px;
  color: var(--strong-black);
  margin-bottom: 24px;
}

.organizer-logo-wrap {
  margin-bottom: 64px;
}

.organizer-logo {
  width: 100px;
  height: auto;
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px 32px;
  align-items: center;
}

.partner-grid img {
  max-width: 100%;
  max-height: 56px;
  width: auto;
  height: auto;
}

/* SPECIAL PARTNER: ロゴを追加しても折り返す横並びグリッド */
.special-partner-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 48px 40px;
}

.special-partner-logo {
  display: inline-block;
  transition: opacity 0.2s ease;
}

.special-partner-logo img {
  max-width: 220px;
  max-height: 64px;
  width: auto;
  height: auto;
  display: block;
}

.special-partner-logo:hover {
  opacity: 0.7;
}

/* =========================================================
   NEWS
   ========================================================= */

.split-section--news .split-section__grid {
  padding-bottom: 240px;
}

.news-item {
  display: block;
  padding: 20px 0;
  border-bottom: 1px solid var(--hairline);
  transition: opacity 0.2s ease;
}

.news-item:first-child {
  border-top: 1px solid var(--hairline);
}

.news-item:hover {
  opacity: 0.6;
}

.news-date {
  font-size: 14px;
  font-weight: 400;
  line-height: 14px;
  color: var(--muted-777);
  margin-bottom: 10px;
}

.news-media {
  font-size: 14px;
  font-weight: 400;
  color: var(--muted-777);
}

.news-title {
  font-size: 18px;
  font-weight: 900;
  line-height: 25.2px;
  color: var(--heading);
}

/* =========================================================
   APPLY（黒帯）ideal_spec.md §2.9
   ========================================================= */

.apply-band {
  background-color: var(--dark-band);
  padding: 160px 0 80px;
}

.apply-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
}

.apply-wordmark {
  width: 120px;
  height: auto;
  margin-bottom: 4px;
}

.apply-subtext {
  font-size: 16px;
  font-weight: 600;
  line-height: 16px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: -16px;
}

.btn-apply {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--dark-band);
  color: var(--white);
  border: 1px solid #5D5D5D;
  border-radius: 2px;
  padding: 8px 40px;
  font-family: var(--font-jp);
  font-size: 16px;
  font-weight: 600;
  line-height: 28.8px;
  letter-spacing: -0.8px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.btn-apply:hover {
  background-color: var(--white);
  color: var(--dark-band);
}

/* =========================================================================================
   ここから下：BANK SUMMIT 2026 専用セクション（ideal トンマナ継承）
   ========================================================================================= */

/* STATS */

.stats-row {
  display: flex;
  flex-wrap: wrap;
  gap: 64px;
}

.stats-number {
  font-family: var(--font-en);
  font-weight: 900;
  font-size: 56px;
  line-height: 1;
  color: var(--heading);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.stats-suffix {
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 16px;
  margin-left: 8px;
}

.stats-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--muted-666);
}

/* Shared content heading/lead (Part 2) */

.content-heading {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--heading);
  margin-bottom: 20px;
}

.content-lead {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.9;
  color: var(--muted-555);
  margin-bottom: 48px;
  max-width: 560px;
}

/* WHY JOIN */

.point-list {
  display: flex;
  flex-direction: column;
}

.point-item {
  padding: 0 0 8px;
}

.point-number {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 14px;
  color: var(--muted-777);
  margin-bottom: 16px;
}

.point-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 14px;
  line-height: 1.6;
}

.point-text {
  font-size: 14px;
  color: var(--muted-555);
  line-height: 1.9;
  max-width: 560px;
}

/* FOR WHOM */

.whom-list {
  display: flex;
  flex-direction: column;
}

.whom-item {
  padding: 0 0 8px;
}

.whom-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 14px;
}

.whom-text {
  font-size: 14px;
  color: var(--muted-555);
  line-height: 1.9;
  max-width: 560px;
}

/* PAST EVENTS */

.report-list {
  display: flex;
  flex-direction: column;
}

.report-card {
  padding-bottom: 8px;
}

.report-media {
  width: 100%;
  max-width: 560px;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  margin-bottom: 24px;
  background-color: #ddd;
}

.report-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.report-year {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 18px;
  color: var(--heading);
  margin-bottom: 8px;
}

.report-date {
  font-size: 13px;
  color: var(--muted-666);
  margin-bottom: 14px;
}

.report-text {
  font-size: 14px;
  color: var(--body-text);
  line-height: 1.9;
  margin-bottom: 18px;
  max-width: 560px;
}

.report-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.report-links a {
  font-size: 13px;
  color: var(--heading);
  border-bottom: 1px solid var(--heading);
  padding-bottom: 2px;
}

.report-links a:hover {
  opacity: 0.6;
}

/* FAQ */

.faq-list {
  border-top: 1px solid var(--hairline);
}

.faq-item {
  border-bottom: 1px solid var(--hairline);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 22px 40px 22px 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--heading);
  position: relative;
  line-height: 1.7;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 20px;
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 400;
  color: var(--muted-666);
}

.faq-item[open] summary::after {
  content: "\2212";
}

.faq-item p {
  font-size: 14px;
  color: var(--muted-555);
  line-height: 1.9;
  padding-bottom: 24px;
  padding-right: 40px;
  max-width: 560px;
}

.faq-item a {
  border-bottom: 1px solid var(--heading);
  color: var(--heading);
}

/* PRE ENTRY セクションは削除済み（2026-07-02）。.pre-entry / .pre-entry-inner /
   .pre-entry__* / .btn-apply--dark は未使用のため削除した。 */

/* =========================================================
   Footer ideal_spec.md §2.10
   ========================================================= */

.site-footer {
  background-color: var(--dark-band);
  padding: 80px 0 32px;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 64px;
}

.footer-wordmark {
  font-family: var(--font-en);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--white);
}

.footer-wordmark__line {
  display: block;
  font-size: 28px;
}

.footer-wordmark__line--year {
  font-weight: 800;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.footer-nav a {
  font-size: 16px;
  font-weight: 600;
  line-height: 24px;
  letter-spacing: -0.32px;
  color: var(--white);
  padding: 4px 0;
}

.footer-nav a:hover {
  opacity: 0.6;
}

.footer-bottom {
  padding-top: 24px;
}

.footer-copyright {
  font-size: 10px;
  font-weight: 600;
  line-height: 18px;
  color: var(--footer-copyright);
}

/* =========================================================
   Responsive — tablet
   ========================================================= */

@media (max-width: 1024px) {
  .split-section__grid {
    grid-template-columns: 320px 1fr;
  }

  .partner-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px 24px;
  }
}

/* =========================================================
   Responsive — mobile（ideal_spec.md §3）
   ========================================================= */

@media (max-width: 720px) {
  :root {
    --content-pad: 20px;
  }

  .header-inner {
    padding: 24px 20px 0;
  }

  .header-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 40%;
    background-color: var(--bg);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    padding: 24px;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    overflow-y: auto;
    box-shadow: -8px 0 24px rgba(0,0,0,0.08);
  }

  .header-nav.is-open {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
    width: 100%;
    margin-bottom: 24px;
  }

  .nav-list a {
    display: block;
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid var(--hairline);
    font-size: 16px;
  }

  .btn-header-cta {
    width: 100%;
    padding: 14px 24px;
  }

  .menu-toggle {
    display: flex;
    position: relative;
    z-index: 101;
  }

  .menu-toggle.is-open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .menu-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.is-open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .hero {
    padding-top: 24px;
  }

  .hero-inner {
    padding-top: 96px;
  }

  .hero-bar {
    width: 100%;
    height: 6px;
    margin-bottom: 24px;
  }

  .hero-wordmark {
    width: 260px;
  }

  .hero-subcopy {
    font-size: 16px;
    line-height: 28.8px;
  }

  .hero-subcopy__break {
    display: block;
  }

  .split-section {
    padding-top: 96px;
  }

  .split-section__grid {
    display: flex;
    flex-direction: column;
    padding-bottom: 80px;
    gap: 32px;
  }

  .split-section__sticky {
    position: static;
  }

  .split-section__jp {
    font-size: 13px;
    line-height: 23.4px;
  }

  .intro-content p {
    font-size: 17px;
    line-height: 34px;
    margin-bottom: 32px;
  }

  .timeslot__title {
    font-size: 19px;
    line-height: 27px;
  }

  .speaker-card {
    gap: 16px;
  }

  .speaker-card__photo {
    width: 88px;
    height: 88px;
  }

  .outline-row {
    grid-template-columns: 100px 157px;
    gap: 12px;
  }

  .outline-row__value {
    font-size: 15px;
    line-height: 24px;
  }

  .outline-map {
    max-width: 100%;
    height: 200px;
  }

  .partner-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 24px;
  }

  .apply-band {
    padding: 96px 0 64px;
  }

  .stats-row {
    flex-direction: column;
    gap: 32px;
  }

  .content-heading {
    font-size: 22px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
    margin-bottom: 40px;
  }

  .footer-nav {
    align-items: flex-start;
  }
}