/* ==========================================================
   Design tokens
   ========================================================== */
:root{
  --dodger:        #005A9C;
  --dodger-deep:    #003D6B;
  --sky:            #A8D8EA;
  --mist:           #EAF4FB;
  --sand:           #F3EDE3;
  --white:          #FAF8F3;
  --ink:            #1B2733;
  --ink-soft:       #4A5A68;
  --line:           rgba(0,90,156,0.14);

  --font-body: 'Noto Sans JP', 'Hiragino Sans', sans-serif;

  --container: 1080px;
  --radius: 14px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  font-weight:300;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-weight:500;
  letter-spacing:.02em;
  margin:0;
}
p{ margin:0; }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }

.section-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
  position:relative;
}

/* ==========================================================
   Signature element: spine line
   ========================================================== */
.spine-line path{
  fill:none;
  stroke:var(--white);
  stroke-opacity:.55;
  stroke-width:1.4;
}
.spine-hero{
  position:absolute;
  top:0; left:50%;
  width:140px;
  height:100%;
  transform:translateX(-50%);
  pointer-events:none;
}

.vertebra{
  position:absolute;
  left:50%;
  top:-64px;
  width:26px;
  height:26px;
  transform:translateX(-50%);
  border:1.4px solid var(--dodger);
  border-radius:50%;
  background:var(--white);
}
.vertebra::before{
  content:"";
  position:absolute;
  left:50%;
  top:100%;
  width:1px;
  height:28px;
  background:var(--line);
  transform:translateX(-50%);
}
.vertebra::after{
  content:"";
  position:absolute;
  inset:6px;
  border-radius:50%;
  background:var(--dodger);
  opacity:.18;
}

/* ==========================================================
   Nav
   ========================================================== */
.site-nav{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:16px 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.nav-logo{
  font-size:14px;
  font-weight:600;
  color:var(--dodger-deep);
  letter-spacing:.04em;
  white-space:nowrap;
}
.nav-links{
  display:flex;
  gap:28px;
  font-size:13.5px;
  color:var(--ink-soft);
}
.nav-links a:hover{ color:var(--dodger); }
.nav-cta{
  font-size:13px;
  font-weight:500;
  background:var(--dodger);
  color:var(--white);
  padding:9px 18px;
  border-radius:999px;
  white-space:nowrap;
}
@media (max-width:760px){
  .nav-links{ display:none; }
}

/* ==========================================================
   Hero
   ========================================================== */
.hero{
  position:relative;
  min-height:92vh;
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
  background:var(--dodger-deep);
}
.hero-sky{
  position:absolute; inset:0;
  background:
    radial-gradient(120% 90% at 50% 0%, var(--sky) 0%, var(--dodger) 46%, var(--dodger-deep) 100%);
}
.hero-inner{
  position:relative;
  z-index:2;
  max-width:780px;
  padding:0 28px;
  text-align:center;
  color:var(--white);
}
.eyebrow{
  font-size:12.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--sky);
  margin-bottom:26px;
  font-weight:500;
}
.hero-title-art{
  display:block;
  width:100%;
  max-width:620px;
  height:auto;
  margin:0 auto 34px;
}
.hero-dates{
  font-size:15px;
  color:var(--sky);
  margin-bottom:18px;
  font-weight:400;
}
.hero-lead-main{
  font-size:19px;
  color:var(--white);
  line-height:1.7;
  margin-bottom:20px;
  font-weight:500;
}
.hero-lead{
  font-size:14px;
  color:rgba(255,255,255,.72);
  line-height:1.9;
  margin-bottom:40px;
  font-weight:300;
  text-align:left;
}
.hero-actions{
  display:flex;
  gap:14px;
  justify-content:center;
  flex-wrap:wrap;
}
.btn{
  display:inline-block;
  padding:14px 30px;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  letter-spacing:.02em;
  transition:transform .18s ease, opacity .18s ease;
}
.btn:hover{ transform:translateY(-1px); opacity:.92; }
.btn-primary{ background:var(--white); color:var(--dodger-deep); }
.btn-ghost{ border:1px solid rgba(255,255,255,.5); color:var(--white); }
.btn-outline{ border:1px solid var(--dodger); color:var(--dodger); }

.scroll-cue{
  position:absolute;
  bottom:32px; left:50%;
  transform:translateX(-50%);
  width:1px; height:52px;
  background:rgba(255,255,255,.4);
}
.scroll-cue span{
  position:absolute; top:0; left:-2.5px;
  width:6px; height:6px;
  border-radius:50%;
  background:var(--white);
  animation:cue 2.2s infinite ease-in-out;
}
@keyframes cue{
  0%{ top:0; opacity:1; }
  90%{ opacity:0; }
  100%{ top:100%; opacity:0; }
}

/* ==========================================================
   Sections
   ========================================================== */
.section{
  position:relative;
  padding:120px 0 110px;
}
.section-alt{ background:var(--mist); }
.section-eyebrow{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--dodger);
  font-weight:600;
  margin-bottom:18px;
  text-align:center;
}
.section h2{
  font-size:clamp(24px, 3.4vw, 34px);
  text-align:center;
  line-height:1.6;
  margin-bottom:34px;
  color:var(--dodger-deep);
}
.lead-text{
  max-width:660px;
  margin:0 auto 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-soft);
  text-align:left;
}
.update-badge{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  margin:0 auto 26px;
  font-size:12px;
  color:var(--dodger);
  font-weight:600;
}
.update-dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:#3BAE6B;
  display:inline-block;
  box-shadow:0 0 0 3px rgba(59,174,107,.18);
}
.update-date{
  color:var(--ink-soft);
  font-weight:400;
}
.update-sources{
  font-size:12.5px;
  color:var(--ink-soft);
  line-height:1.9;
}

/* concerns */
.concern-grid{
  margin-top:46px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
}
.concern-item{
  background:var(--mist);
  border:1px solid var(--line);
  border-radius:999px;
  padding:16px 22px;
  font-size:14px;
  color:var(--ink);
  font-weight:500;
  text-align:center;
}
.concern-note{
  margin-top:34px;
  font-weight:400;
}
.intro-callout{
  max-width:600px;
  margin:38px auto 0;
  padding:28px 32px;
  background:var(--mist);
  border-radius:var(--radius);
  font-size:14.5px;
  line-height:2;
  color:var(--ink-soft);
  font-weight:500;
  text-align:left;
}
@media (max-width:760px){
  .concern-grid{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:480px){
  .concern-grid{ grid-template-columns:1fr; }
}

/* future (その先へ) */
.future-grid{
  margin-top:38px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
.future-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 20px;
  font-size:14.5px;
  color:var(--dodger-deep);
  font-weight:600;
  text-align:center;
  line-height:1.7;
}
@media (max-width:760px){
  .future-grid{ grid-template-columns:1fr; }
}

/* pillars (背骨コンディショニングとは) */
.pillar-grid{
  margin-top:46px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.pillar-card{
  background:var(--white);
  border-radius:var(--radius);
  padding:32px 26px;
  border:1px solid var(--line);
}
.pillar-num{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  color:var(--white);
  background:var(--dodger);
  padding:4px 11px;
  border-radius:999px;
  margin-bottom:16px;
}
.pillar-card h3{
  font-size:16px;
  color:var(--dodger-deep);
  margin-bottom:10px;
  font-weight:600;
}
.pillar-card p{
  font-size:13px;
  color:var(--ink-soft);
  line-height:1.9;
}
@media (max-width:760px){
  .pillar-grid{ grid-template-columns:1fr; }
}

/* overview cards */
.overview-grid{
  margin-top:50px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
}
.ov-card{
  background:var(--white);
  padding:32px 22px;
}
.ov-num{
  display:block;
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--sky);
  background:var(--dodger);
  width:fit-content;
  padding:4px 10px;
  border-radius:999px;
  margin-bottom:16px;
  font-weight:600;
}
.ov-card h3{
  font-size:16px;
  margin-bottom:8px;
  color:var(--dodger-deep);
}
.ov-card p{
  font-size:13.5px;
  color:var(--ink-soft);
}
@media (max-width:900px){
  .overview-grid{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:560px){
  .overview-grid{ grid-template-columns:1fr; }
}

/* schedule / timetable */
.tabs{
  display:flex;
  justify-content:center;
  gap:10px;
  margin:44px 0 30px;
}
.tab-btn{
  font-family:var(--font-body);
  font-size:13.5px;
  font-weight:500;
  padding:10px 24px;
  border-radius:999px;
  border:1px solid var(--dodger);
  background:transparent;
  color:var(--dodger);
  cursor:pointer;
  transition:.18s ease;
}
.tab-btn.is-active{ background:var(--dodger); color:var(--white); }

.timetable{
  display:none;
  max-width:640px;
  margin:0 auto;
  border-top:1px solid var(--line);
}
.timetable.is-active{ display:block; }
.tt-row{
  display:flex;
  align-items:baseline;
  gap:24px;
  padding:18px 6px;
  border-bottom:1px solid var(--line);
}
.tt-time{
  flex:0 0 118px;
  font-size:13.5px;
  color:var(--dodger);
  font-weight:600;
  letter-spacing:.02em;
}
.tt-label{
  font-size:14.5px;
  color:var(--ink);
}
.tt-live em{
  font-style:normal;
  font-size:11px;
  color:var(--white);
  background:var(--dodger);
  padding:2px 9px;
  border-radius:999px;
  margin-left:10px;
  letter-spacing:.06em;
}
.note{
  max-width:640px;
  margin:32px auto 0;
  font-size:12.5px;
  color:var(--ink-soft);
  text-align:left;
  line-height:1.9;
}

/* message section */
.message-section{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:stretch;
  padding:0;
  min-height:520px;
}
.message-photo{
  background:
    linear-gradient(rgba(0,20,45,.12), rgba(0,20,45,.30)),
    url('assets/message-photo.jpg') center 78% / cover no-repeat;
  min-height:340px;
}
.message-body{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  justify-content:center;
  gap:28px;
  padding:80px 56px;
  background:var(--dodger-deep);
}
.message-body .vertebra{
  position:relative;
  left:auto;
  top:auto;
  transform:none;
  border-color:rgba(255,255,255,.6);
  background:transparent;
}
.message-body .vertebra::after{ background:var(--sky); opacity:.5; }
.message-body .vertebra::before{ display:none; }
.message-body .section-eyebrow{
  text-align:left;
  color:var(--sky);
  margin:0;
}
.message-body blockquote{
  margin:0;
  font-size:clamp(22px,3vw,30px);
  color:var(--white);
  font-weight:400;
  line-height:1.85;
  max-width:460px;
}
.quote-sub{
  display:inline-block;
  margin-top:18px;
  font-size:0.62em;
  color:var(--sky);
  font-weight:300;
}
.message-note{
  max-width:420px;
  margin-top:24px;
  font-size:13px;
  line-height:1.9;
  color:rgba(255,255,255,.62);
  font-weight:300;
}
@media (max-width:820px){
  .message-section{ grid-template-columns:1fr; min-height:0; }
  .message-photo{ display:none; }
  .message-body{ padding:44px 28px 40px; gap:18px; }
}

/* scroll gallery */
.scroll-gallery-section{
  background:var(--dodger-deep);
  padding:28px 0 32px;
}
.scroll-gallery-label{
  max-width:1080px;
  margin:0 auto 18px;
  padding:0 28px;
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--sky);
  font-weight:600;
}
.scroll-gallery-label span{
  font-weight:400;
  color:rgba(255,255,255,.55);
}
.scroll-gallery{
  display:flex;
  gap:16px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:0 28px 12px;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
  scrollbar-color:var(--sky) transparent;
}
.scroll-gallery::-webkit-scrollbar{ height:6px; }
.scroll-gallery::-webkit-scrollbar-thumb{ background:rgba(168,216,234,.5); border-radius:999px; }
.scroll-item{
  flex:0 0 auto;
  width:min(560px, 82vw);
  scroll-snap-align:start;
  margin:0;
  border-radius:12px;
  overflow:hidden;
  background:var(--dodger);
  position:relative;
  box-shadow:0 18px 40px rgba(0,10,25,.35);
}
.scroll-item img{
  width:100%;
  aspect-ratio:16/9;
  height:auto;
  object-fit:cover;
  display:block;
}
.scroll-item figcaption{
  position:absolute;
  left:0; right:0; bottom:0;
  padding:12px 14px 10px;
  font-size:12.5px;
  color:var(--white);
  background:linear-gradient(to top, rgba(0,20,45,.75), transparent);
}
@media (max-width:640px){
  .scroll-item{ width:97vw; border-radius:9px; }
  .scroll-gallery{ padding:0 10px 12px; gap:8px; }
  .scroll-gallery-label{ padding:0 10px; font-size:12px; }
}

/* teams */
.team-grid{
  margin-top:46px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.team-card{
  background:var(--mist);
  border-radius:var(--radius);
  padding:30px 26px;
}
.team-tag{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--dodger-deep);
  margin-bottom:12px;
}
.team-card p{
  font-size:13.5px;
  color:var(--ink-soft);
  line-height:1.9;
}
.team-link{
  display:inline-block;
  margin-top:14px;
  font-size:12.5px;
  font-weight:600;
  color:var(--dodger);
}
.team-link:hover{ text-decoration:underline; }
@media (max-width:900px){
  .team-grid{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:560px){
  .team-grid{ grid-template-columns:1fr; }
}

/* archive preview (links out to Notion) */
.archive-preview-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
  max-width:760px;
  margin:46px auto 0;
}
.archive-preview-grid img{
  width:100%;
  height:180px;
  object-fit:cover;
  border-radius:12px;
  display:block;
}
@media (max-width:640px){
  .archive-preview-grid{ grid-template-columns:1fr 1fr; }
  .archive-preview-grid img{ height:140px; }
}
.archive-embed-wrap{
  max-width:560px;
  margin:28px auto 0;
}
.voice-preview-card{
  background:var(--sand);
  border-radius:var(--radius);
  padding:38px 34px;
  text-align:center;
}
.voice-meta{
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--dodger);
  font-weight:600;
  margin-bottom:12px;
  text-transform:uppercase;
}
.voice-text{
  font-size:14px;
  color:var(--ink-soft);
  line-height:1.9;
  margin-bottom:26px;
  text-align:left;
}
.voice-preview-card .btn-outline{
  background:var(--white);
}

/* join / cta */
.join-grid{
  margin-top:46px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  max-width:720px;
  margin-left:auto;
  margin-right:auto;
}
.join-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:38px 30px;
  text-align:center;
}
.join-card.is-highlight{
  background:var(--dodger);
  border-color:var(--dodger);
  color:var(--white);
}
.join-card h3{ font-size:16px; margin-bottom:14px; }
.join-card .price{
  font-size:22px;
  font-weight:600;
  margin-bottom:10px;
}
.join-card p:not(.price){
  font-size:13px;
  margin-bottom:26px;
  opacity:.85;
}
.join-card.is-highlight .btn-primary{
  background:var(--white);
  color:var(--dodger-deep);
}
@media (max-width:640px){
  .join-grid{ grid-template-columns:1fr; }
}

/* footer */
.site-footer{
  background:var(--dodger-deep);
  color:rgba(255,255,255,.75);
  padding:56px 0 40px;
}
.footer-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
  text-align:center;
}
.footer-logo{
  font-size:14px;
  font-weight:600;
  color:var(--white);
  margin-bottom:14px;
}
.footer-links{
  font-size:12.5px;
  margin-bottom:18px;
}
.footer-links a{ text-decoration:underline; text-underline-offset:3px; }
.footer-copy{ font-size:11.5px; opacity:.6; }

@media (prefers-reduced-motion: reduce){
  .scroll-cue span{ animation:none; }
  html{ scroll-behavior:auto; }
}