/* ===== 基本設定 ===== */
:root {
  --background: #ffffff;
  --foreground: #171717;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0a0a0a;
    --foreground: #ededed;
  }
}

* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

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

html,
body {
  max-width: 100vw;
  overflow-x: hidden;
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: linear-gradient(180deg, #0B1220 0%, #091349 55%, #69C1FF 100%);
}

body {
  color: var(--foreground);
  line-height: 1.6;
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

img {
  max-width: 100%;
  height: auto;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #a8a8a8;
}

@media (prefers-color-scheme: dark) {
  html {
    color-scheme: dark;
  }
  
  ::-webkit-scrollbar-track {
    background: #2a2a2a;
  }
  
  ::-webkit-scrollbar-thumb {
    background: #555;
  }
  
  ::-webkit-scrollbar-thumb:hover {
    background: #777;
  }
}

/* ===== 全体設定 ===== */
.bg, main {
  min-height: 100vh;
  color: #fff;
  font-family: 'Noto Sans JP', sans-serif;
  width: 100%;
  box-sizing: border-box;
}

/* 背景を画面いっぱいに広げるための設定 */
body {
  background: linear-gradient(180deg, #0B1220 0%, #091349 55%, #69C1FF 100%);
  margin: 0;
  padding: 0;
  width: 100vw;
  overflow-x: hidden;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.05);
  backdrop-filter: blur(16.5px);
  width: 100vw;
}

.headerInner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 120px;
}

.logoArea {
  /* LUKE logo */
}

.nav {
  display: flex;
  gap: 0;
  padding: 16px 0 0;
}

.nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 16px;
  padding: 0 32px 16px;
  border-radius: 8px 8px 0 0;
  transition: all 0.3s;
}

.navActive {
  color: #4F79EA !important;
  border-bottom: 1px solid #4F79EA;
}

.headerCta {
  background: #173EA9;
  color: #fff;
  border: none;
  padding: 16px 24px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s;
}

.headerCta:hover {
  background: #0B1B3B;
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  width: 100vw;
}

.heroImage {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.heroOverlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0) 0%,
    rgba(0, 0, 0, 0.3) 50%,
    rgba(0, 0, 0, 0.8) 100%
  );
  z-index: 2;
}

.heroContent {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

.heroLogos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-bottom: 60px;
}

.heroMainContent {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
  text-align: center;
}

.heroSubtitle {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.05em;
  color: #fff;
  margin: 0;
  text-align: center;
}

.heroMainTitle {
  font-size: 72px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.05em;
  color: #fff;
  text-align: center;
  margin: 0;
}

@media (max-width: 768px) {
  .hero {
    height: 100vh;
    min-height: 500px;
  }
  
  .heroContent {
    padding: 0 20px;
    text-align: left;
  }
  
  .heroLogos {
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
    align-items: flex-start;
    justify-content: flex-start;
  }
  
  .heroMainContent {
    gap: 20px;
    align-items: flex-start;
    text-align: left;
  }
  
  .heroSubtitle {
    font-size: 20px;
    line-height: 1.4;
    text-align: left;
  }
  
  .heroMainTitle {
    font-size: 28px;
    line-height: 1.3;
    text-align: left;
  }
}

@media (max-width: 480px) {
  .heroContent {
    padding: 0 16px;
    text-align: left;
  }
  
  .heroSubtitle {
    font-size: 18px;
    line-height: 1.4;
    text-align: left;
  }
  
  .heroMainTitle {
    font-size: 24px;
    line-height: 1.3;
    text-align: left;
  }
  
  .heroLogos {
    gap: 16px;
    margin-bottom: 30px;
    align-items: flex-start;
  }
  
  .heroMainContent {
    gap: 16px;
    align-items: flex-start;
    text-align: left;
  }
}

/* ===== Section共通 ===== */
.sectionHeader {
  text-align: left;
  margin-bottom: 40px;
}

.sectionTitle {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 5%;
  margin: 0 0 8px 0;
}

.sectionUnderline {
  width: 33px;
  height: 4px;
  background: #C6BA94;
  margin: 0 0;
}

/* ===== Seminar Schedule ===== */
.seminarSection {
  padding: 120px 0 60px;
  width: 100vw;
  background: transparent;
}

.seminarSectionInner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 180px;
}

.seminarCards {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-left: 6px solid #173EA9;
  backdrop-filter: blur(30px);
  padding: 24px 27px;
  border-radius: 12px;
  margin-bottom: 40px;
}
.seminarCards .blanksp {
  width: 180px;
}

.seminarCard {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  padding: 0 16px;
}

.seminarLabel {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 5%;
  color: #fff;
  margin-bottom: 8px;
}

.seminarDate {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: 5%;
  color: #fff;
  margin-bottom: 8px;
}

.seminarPlace {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 5%;
  color: #fff;
}

.seminarBtn {
  background: #173EA9;
  color: #fff;
  border: none;
  padding: 16px 24px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: background 0.3s;
}

.seminarBtn:hover {
  background: #6CC5FF;
  color: #173EA9;
}
.merit .base {
  display: flex;
  gap: 24px;
}

.merit .blk {
  background: rgba(255, 255, 255, 0.1);
    border-top: 6px solid #173EA9;
    backdrop-filter: blur(30px);
    padding: 24px 27px;
    border-radius: 12px;
    width: 33.33333%;
    text-align: center;
}
.merit .blk .txt {
  font-weight: bold;
  font-size: 18px;
}
.merit .blk .img {
  margin-bottom: 16px;
}
.merit .blk .img span {
  background-color: #fff;
  color: #fff;
  text-align: center;
  width: 160px;
  height: 160px;
  padding-top: 40px;
  font-weight: bold;
  border-radius: 100px;
  line-height: 50px;
  display: block;
  margin: auto;
}
.merit .blk .img span img {
  width: 50%;
  height: auto;
}

.merit .info {
  margin-top: 40px;
  border: 1px solid #C6BA94;
  border-radius: 12px;
  padding: 40px;
}
.merit .info h3 {
  margin-bottom: 16px;
  font-size: 24px;
  color: #C6BA94;
}
@media screen and (max-width: 768px) {
  .merit {
    padding-top: 0;
  }
.merit .base {
  display: block;
}

.merit .blk {
    padding: 24px 27px 40px;
    border-radius: 12px;
    width: 80%;
    margin: auto;    
    margin-bottom: 32px;
}
.merit .blk .txt {
  font-weight: bold;
  font-size: 18px;
}
.merit .blk .img {
  margin-bottom: 16px;
}
.merit .blk .img span {
  background-color: #fff;
  color: #fff;
  text-align: center;
  width: 160px;
  height: 160px;
  padding-top: 40px;
  font-weight: bold;
  border-radius: 100px;
  line-height: 50px;
  display: block;
  margin: auto;
}
.merit .blk .img span img {
  width: 50%;
  height: auto;
}

.merit .info {
  margin-top: 40px;
  border: 1px solid #C6BA94;
  border-radius: 12px;
  padding: 40px;
}
.merit .info h3 {
  margin-bottom: 16px;
  font-size: 22px;
  color: #C6BA94;
}
}

.btnArrow {
  font-size: 16px;
}

/* ===== Message Section ===== */
.messageSection {
  padding: 120px 0 60px;
  width: 100vw;
  background: transparent;
}

.messageSectionInner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 180px;
  display: flex;
  align-items: flex-end;
  gap: -60px;
}

.messageContainer {
  display: flex;
  gap: 23px;
  width: 100%;
}

.messageContent {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.messageText {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.messageText p {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 5%;
  margin: 0;
}

.messageProfile {
  width: 431px;
  height: 412px;
  position: relative;
}

.profileImageContainer {
  position: relative;
  width: 321px;
  height: 395px;
  border-radius: 20px;
  overflow: hidden;
}

.profileImage {
  border-radius: 20px;
}

.profileInfo {
  position: absolute;
  bottom: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.profileTitle {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 5%;
  color: #fff;
}

.profileName {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 5%;
  color: #fff;
}

/* ===== About Section ===== */
.aboutSection {
  background: #0B1B3B;
  padding: 90px 0;
  width: 100vw;
  position: relative;
}

.aboutSectionInner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 180px;
  display: flex;
  gap: 23px;
  align-items: flex-start;
}

.aboutImageSection {
  width: 480px;
  height: 350px;
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
}

.aboutImage {
  border-radius: 12px;
}

.aboutContent {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 24px 0;
  align-items: flex-end;
}

.aboutText {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.aboutText p {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 5%;
  margin: 0;
}

.aboutBtn {
  background: #173EA9;
  color: #fff;
  border: none;
  padding: 16px 24px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 16px;
  align-self: flex-start;
  transition: background 0.3s;
}

.aboutBtn:hover {
  background: #6CC5FF;
  color: #173EA9;
}

/* ===== Media Section ===== */
.mediaSection {
  background: linear-gradient(
    180deg,
    #0B1220 0%,
    rgba(9, 19, 73, 0) 55.29%,
    #69C1FF 100%
  );
  padding: 120px 0 60px;
  width: 100vw;
  position: relative;
}

.mediaSectionInner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 180px;
}

.mediaGrid {
  display: flex;
  gap: 40px;
  justify-content: center;
}

.mediaItem {
  display: flex;
  flex-direction: column;
  gap: 7px;
  width: 423px;
}

.mediaThumb {
  position: relative;
  width: 423px;
  height: 317px;
  border-radius: 12px;
  overflow: hidden;
}

.mediaImage {
  border-radius: 12px;
}

.playButton {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90px;
  height: 90px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.3s;
}

.playButton:hover {
  background: rgba(255, 255, 255, 0.2);
}

.playIcon {
  font-size: 32px;
  color: #fff;
  margin-left: 7px;
}

.mediaCaption {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 5%;
  color: #fff;
}

/* ===== Q&A Section ===== */
.qaSection {
  background: #0B1220;
  padding: 120px 0;
  width: 100vw;
}

.qaSectionInner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 180px;
}

.qaList {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 40px;
}

.qaItem {
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  padding: 24px 0px;
}

.qaQuestion {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  list-style: none;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 5%;
  color: #fff;
}

.qaNumber {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 5%;
  color: #fff;
}

.qaToggle {
  margin-left: auto;
  font-size: 24px;
  color: #fff;
  transition: transform 0.3s;
}

.qaItem[open] .qaToggle {
  transform: rotate(45deg);
}

.qaAnswer {
  padding: 0 0 0 28px;
  margin-top: 8px;
}

.qaAnswer p {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 5%;
  margin: 0 0 16px 0;
}

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

.qaCtaSection {
  text-align: center;
}

.qaCtaBtn {
  background: #173EA9;
  color: #fff;
  border: none;
  padding: 16px 24px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  height: 64px;
  transition: background 0.3s;
}

.qaCtaBtn:hover {
  background: #6CC5FF;
  color: #173EA9;
}

/* ===== Footer ===== */
.footer-root {
  background: #000102;
  padding: 60px 0 40px 0;
  color: #fff;
  width: 100vw;
  box-sizing: border-box;
}

.footer-inner {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: flex-end;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  gap: 0;
  flex-wrap: wrap;
  padding: 0 180px;
}

.footer-contact-block {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1 1 0;
  min-width: 180px;
}

.footer-logo-info-block {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 40px;
  flex: 1 1 0;
  min-width: 320px;
  justify-content: flex-end;
}

.footer-logo-block {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 162px;
  height: 66px;
}

.footer-logo-img {
  width: 162px;
  height: 66px;
  object-fit: contain;
}

.footer-info-block {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: left;
}

.footer-info-org, .footer-info-mail {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.2em;
  color: #fff;
}

.footer-copyright {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.2em;
  color: #fff;
  text-align: center;
  margin-top: 16px;
  opacity: 0.7;
}

.footer-contact-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1em;
  color: #fff;
  text-align: left;
  margin-bottom: 8px;
}

.footer-sub {
  font-size: 16px;
  font-weight: 500;
  color: #fff;
  text-align: left;
  margin-bottom: 8px;
}