*{
box-sizing:border-box;
}

html,body{
margin:0;
}

body{
font-family:'Noto Sans JP',sans-serif;
color:#ffffff;
overflow-x:hidden;
  --panel-surface: linear-gradient(135deg, rgba(94, 139, 163, 0.85), rgba(14,40,56,0.58), rgba(61, 161, 156, 0.72));
  --panel-surface-soft: linear-gradient(160deg, rgba(180, 176, 176, 0.12), rgba(255,255,255,0.04));
  --panel-border: rgba(255,255,255,0.78);
  --panel-shadow: transparent;
  --card-surface: linear-gradient(160deg, rgba(116, 111, 111, 0.14), rgba(143, 132, 132, 0.05));
  --card-surface-soft: linear-gradient(160deg, rgba(168, 158, 158, 0.11), rgba(179, 164, 164, 0.04));
  --card-border: rgba(255,255,255,0.64);
  --card-shadow: transparent;
  --panel-glow: rgba(255,255,255,0.34);
  --panel-glow-soft: rgba(255,255,255,0.2);
  --card-glow: rgba(255,255,255,0.26);
  --card-glow-soft: rgba(255,255,255,0.14);
  --panel-border-gradient: linear-gradient(135deg, rgba(255,255,255,0.96), rgba(232,252,248,0.9) 22%, rgba(176,244,235,0.84) 48%, rgba(84,219,208,0.78) 76%, rgba(255,255,255,0.94));
  --card-border-gradient: linear-gradient(140deg, rgba(255,255,255,0.94), rgba(235,252,249,0.82) 30%, rgba(154,238,229,0.76) 62%, rgba(255,255,255,0.88));

background:
radial-gradient(circle at 20% 20%, rgba(138, 55, 55, 0.15), transparent 40%),
linear-gradient(180deg,#26b79e,#9CC999,#e2dbdb);
}

#bg-particles{
position:fixed;
inset:0;
z-index:1;
width:100%;
height:100%;
pointer-events:none;
}

/* ================= HERO ================= */

.hero{
min-height: 70vh;
padding-top: 36px;
display:flex;
justify-content:center;
align-items:center;
position:relative;
z-index:20;
text-align:center;
padding-bottom:52px;
padding-inline:20px;
flex-direction:column;
gap:64px;
}

.hero-panel{
position:relative;
z-index:2;
max-width:520px;
width:100%;
padding:42px 24px;

background:var(--panel-surface);
backdrop-filter:blur(16px);

border-radius:20px;
border:1px solid var(--panel-border);
box-shadow:
0 0 0 1px rgba(255,255,255,0.08),
0 0 28px var(--panel-glow-soft),
0 0 56px rgba(255,255,255,0.08);
}

.hero-panel,
.glass,
.feature-card,
.join-card,
.schedule-card,
.creator,
#viewer .viewer-content{
position:relative;
isolation:isolate;
}

.hero-panel::before,
.glass::before,
.feature-card::before,
.join-card::before,
.schedule-card::before,
.creator::before,
#viewer .viewer-content::before{
content:"";
position:absolute;
inset:0;
border-radius:inherit;
pointer-events:none;
box-shadow:
inset 0 0 0 1px rgba(255,255,255,0.14),
inset 0 0 18px rgba(255,255,255,0.08),
0 0 20px rgba(255,255,255,0.24),
0 0 48px rgba(255,255,255,0.16);
opacity:.95;
}

.hero-panel::after,
.glass::after,
#viewer .viewer-content::after{
content:"";
position:absolute;
inset:0;
padding:3.5px;
border-radius:inherit;
pointer-events:none;
background:var(--panel-border-gradient);
-webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
-webkit-mask-composite:xor;
mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
mask-composite:exclude;
opacity:.96;
}

.feature-card::after,
.join-card::after,
.schedule-card::after,
.creator::after{
content:"";
position:absolute;
inset:0;
padding:2.5px;
border-radius:inherit;
pointer-events:none;
background:var(--card-border-gradient);
-webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
-webkit-mask-composite:xor;
mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
mask-composite:exclude;
opacity:.88;
}

.hero-logo-wrap{
position:relative;
z-index:2;
display:flex;
justify-content:center;
align-items:center;
width:auto;
pointer-events:none;
}

.hero-logo{
display:block;
width:min(760px, 86vw);
max-width:100%;
height:auto;
border:3px solid rgba(255,255,255,.88);
border-radius:24px;
filter:drop-shadow(0 18px 38px rgba(0,0,0,.3));
pointer-events:auto;
}

.hero-title{
display:inline-flex;
justify-content:center;
align-items:center;
position:relative;
margin:0;
z-index:1;
padding:0.1em;
}

.hero-title::before{
content:none;
}

.hero-title::after{
content:none;
}

.logo-text{
position:relative;
display:inline-block;
padding:0.1em 0;
font-family:'M PLUS Rounded 1c','Noto Sans JP',sans-serif;
font-size:clamp(2.2rem, 5.6vw, 3.55rem);
line-height:1;
font-weight:900;
letter-spacing:0.05em;
color:#fff;
text-shadow:none;
background:none;
filter:none;
}

.logo-text::before,
.logo-text::after{
display:none;
}

.subtitle{
font-size:22px;
margin-top:10px;
}

.date{
margin-top:20px;
opacity:.85;
}

.hero .countdown{
font-size:clamp(1.3rem, 3vw, 1.8rem);
font-weight:700;
margin-top:18px;
}

.hero-buttons{
margin-top:30px;
}

.feature-card>p{
flex:1;
}

.feature-card>.button{
margin-top:auto;
}

.button{
padding:14px 28px;
background:#26B7A0;
color:white;
border-radius:30px;
text-decoration:none;
margin:10px;
display:inline-block;
font-weight:600;
transition:.25s;
}

.button:hover{
transform:translateY(-4px);
box-shadow:0 15px 40px rgba(0,0,0,.4);
}

/* ================= BACKGROUND ================= */

#photo-scatter{
position:fixed;
top:0;
left:0;
width:100%;
height:100%;
z-index:1;
pointer-events:auto;
overflow:hidden;
}

/* ================= SECTION ================= */

.section{
position:relative;
max-width:1100px;
margin:auto;
padding-top: 40px;
padding:120px 20px;
z-index:20;
}

.section-title{
text-align:center;
margin:0 auto 28px;
font-size:clamp(1.9rem, 4.5vw, 2.7rem);
line-height:1.25;
font-family:'M PLUS Rounded 1c','Noto Sans JP',sans-serif;
font-weight:900;
letter-spacing:0.05em;
padding:0.25rem 1rem 0.3rem;
border-radius:999px;
display:inline-flex;
position:relative;
background:linear-gradient(130deg, rgba(38,183,160,0.22), rgba(255,255,255,0.14));
color:#f9feff;
text-shadow:0 3px 18px rgba(0,0,0,.32);
box-shadow:inset 0 0 0 1px rgba(255,255,255,0.28);
}

.section-title::before{
content:"✦";
position:absolute;
left:-0.35em;
top:-0.2em;
font-size:0.8em;
color:#9ce6d4;
opacity:.85;
}

.section-title::after{
content:"";
position:absolute;
left:18%;
right:18%;
bottom:0.18em;
height:3px;
border-radius:2px;
background:linear-gradient(90deg, transparent, rgba(255,255,255,.72), transparent);
opacity:.95;
z-index:-1;
}

.section > h2,
.feature-card h2,
.schedule-card h2,
.event-gallery h2{
font-family:'M PLUS Rounded 1c','Noto Sans JP',sans-serif;
font-weight:900;
letter-spacing:0.05em;
}

.section > h2{
font-size:clamp(2rem, 4vw, 2.8rem);
font-weight:900;
margin-bottom:18px;
padding:0.22rem 1rem 0.28rem;
border-radius:999px;
display:inline-flex;
position:relative;
background:linear-gradient(130deg, rgba(38,183,160,0.22), rgba(255,255,255,0.14));
color:#f9feff;
text-shadow:0 3px 18px rgba(0,0,0,.32);
box-shadow:inset 0 0 0 1px rgba(255,255,255,0.28);
}

.section > h2::before{
content:"✦";
position:absolute;
left:-0.35em;
top:-0.2em;
font-size:0.8em;
color:#9ce6d4;
opacity:.85;
}

.section > h2::after{
content:"";
position:absolute;
left:18%;
right:18%;
bottom:0.14em;
height:3px;
border-radius:2px;
background:linear-gradient(90deg, transparent, rgba(255,255,255,.72), transparent);
opacity:.95;
z-index:-1;
}

.zigzag{
display:grid;
grid-template-columns:minmax(0,1.8fr) minmax(280px,1fr);
align-items:start;
gap:24px;
}

.text{
color:#ecfcff;
}

.event-info{
display:flex;
flex-direction:column;
gap:14px;
background:linear-gradient(160deg, rgba(255,255,255,0.10), rgba(255,255,255,0.03));
border:1px solid rgba(255,255,255,0.10);
border-radius:14px;
padding:18px 18px;
}

.info-row{
display:grid;
grid-template-columns:84px 1fr;
gap:14px;
align-items:start;
}

.info-label{
font-weight:700;
color:#7fd0c4;
white-space:nowrap;
}

.info-value{
color:#e9fbff;
line-height:1.55;
}

/* glass */

.glass{
background:var(--panel-surface);
backdrop-filter:blur(18px);
border-radius:20px;
border:1px solid var(--panel-border);
padding:60px;
box-shadow:
0 0 0 1px rgba(255,255,255,0.08),
0 0 26px var(--panel-glow-soft),
0 0 54px rgba(255,255,255,0.08),
0 32px 88px var(--panel-shadow),
inset 0 0 0 1px rgba(255,255,255,0.08);
pointer-events: auto;
}

.overview-card{
border:1px solid var(--panel-border);
box-shadow:
0 0 0 1px rgba(255,255,255,0.06),
0 0 24px rgba(255,255,255,0.08),
inset 0 0 0 1px rgba(255,255,255,.05);
}

.overview-copy{
font-size:16px;
line-height:1.95;
color:#eaf8ff;
margin:0 0 14px;
text-shadow:0 2px 16px rgba(0,0,0,0.35);
}

.section-note{
margin:0 auto 22px;
max-width:760px;
font-size:15px;
line-height:1.8;
color:#e7f7fb;
text-align:center;
text-shadow:0 2px 16px rgba(0,0,0,0.28);
opacity:.92;
}

.overview-card .overview-features{
margin-top:34px;
gap:22px;
}

.overview-card .feature-card{
background:var(--card-surface-soft);
padding:28px 22px;
border:1px solid var(--card-border);
backdrop-filter:blur(6px);
}

.overview-card .feature-card p{
font-size:15px;
line-height:1.7;
color:#ddf4ff;
}

/* ================= FEATURES ================= */

.features{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
gap:30px;
margin-top:40px;
}

.feature-card{
display:flex;
flex-direction:column;
align-items:center;
text-align:center;
padding:30px;
border-radius:16px;
background:var(--card-surface);
border:1px solid var(--card-border);
transition:.3s;
box-shadow:
0 0 0 1px rgba(255,255,255,0.05),
0 0 18px var(--card-glow-soft);
}

.feature-card:hover{
transform:translateY(-6px);
box-shadow:
0 0 0 1px rgba(255,255,255,0.08),
0 0 24px var(--card-glow),
0 20px 50px var(--card-shadow);
}

.feature-icon{
font-size:36px;
margin-bottom:10px;
}

.feature-card .section-title{
color:#26B7A0;
font-size:clamp(0.95rem, 2vw, 1.25rem);
font-weight:900;
padding:0.28rem 0.9rem 0.34rem;
display:inline-flex;
white-space:nowrap;
margin-inline:auto;
border-radius:999px;
background:linear-gradient(120deg, rgba(38,183,160,0.22), rgba(157,232,230,0.18));
border:1px solid rgba(255,255,255,0.22);
box-shadow:0 10px 26px rgba(0,0,0,.16);
}

.schedule-card .section-title{
font-size:clamp(1.1rem, 2.3vw, 1.5rem);
font-weight:900;
padding:0.2rem 0.8rem;
border-radius:999px;
display:inline-block;
background:linear-gradient(120deg, rgba(38,183,160,0.20), rgba(157,232,230,0.14));
border:1px solid rgba(255,255,255,0.2);
}

.event-gallery .section-title{
font-size:clamp(1.1rem, 2.3vw, 1.5rem);
font-weight:900;
padding:0.12rem 0.55rem;
border-radius:999px;
display:inline-block;
background:linear-gradient(120deg, rgba(38,183,160,0.20), rgba(157,232,230,0.14));
border:1px solid rgba(255,255,255,0.2);
}

/* polaroid */
.polaroid{
z-index:1;
position:absolute;
left:0;
top:-120px;
padding:8px 8px 10px;
background:rgba(255, 255, 255, 1);
border-radius:10px;
box-shadow:0 14px 35px rgba(0,0,0,.45);
backdrop-filter:blur(8px);
cursor:pointer;
pointer-events:auto;
transform:translateY(0px) rotate(0deg);
transition:1.2s cubic-bezier(.2,.8,.3,1), box-shadow .3s;
display:inline-block;
text-align:center;
}

.polaroid img{
display:block;
width:100%;
border-radius:8px;
}

.polaroid .author{
font-size:11px;
text-align:center;
color:#182124;
line-height:1.2;
padding:2px 8px;
display:inline-block;
margin:6px auto 0;
width:auto;
max-width:95%;
background:rgba(255,255,255,0.82);
border-radius:999px;
}

/* ================= CREATOR JOIN ================= */

.creator-join{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
gap:30px;
}

.join-card{
text-align:center;
padding:30px;
border-radius:16px;
background:var(--card-surface);
border:1px solid var(--card-border);
box-shadow:
0 0 0 1px rgba(255,255,255,0.05),
0 0 18px var(--card-glow-soft);
}

/* ================= SCHEDULE ================= */

.schedule{
max-width:700px;
margin:auto;
margin-top:50px;
}

.schedule-card{
display:flex;
gap:20px;
align-items:flex-start;

padding:20px;

margin-bottom:20px;

background:linear-gradient(180deg, rgba(255,255,255,0.10), rgba(255,255,255,0.03));
border:1px solid var(--card-border);
border-left:4px solid rgba(255,255,255,0.88);

border-radius:10px;
box-shadow:
0 0 0 1px rgba(255,255,255,0.05),
0 0 18px var(--card-glow-soft);
}

.schedule-time{
font-size:22px;
font-weight:700;
color:#26B7A0;
min-width:70px;
}

/* ================= CREATOR GRID ================= */

.creator-grid{
display:grid;
grid-template-columns:repeat(4, minmax(0, 220px));
justify-content:center;
align-items:stretch;
gap:24px;
margin-top:40px;
overflow:visible;
}

.creator{
background:var(--card-surface);
border:1px solid var(--card-border);
min-height:260px;
padding:20px 16px;
border-radius:14px;
text-align:center;
backdrop-filter:blur(8px);
text-decoration:none;
color:white;
transition:.25s;
display:flex;
flex-direction:column;
align-items:center;
gap:0;
box-shadow:
0 0 0 1px rgba(255,255,255,0.05),
0 0 18px var(--card-glow-soft);
}

.participant-card{
cursor:pointer;
}

.participant-card:hover,
.participant-card:focus-within{
z-index:60;
}

.creator img{
width:74px;
height:74px;
border-radius:50%;
object-fit:cover;
flex:0 0 auto;
}

.creator-name,
.creator > p:not([class]){
width:100%;
margin:12px 0 0;
font-size:15px;
font-weight:800;
line-height:1.35;
overflow-wrap:anywhere;
display:-webkit-box;
-webkit-line-clamp:2;
-webkit-box-orient:vertical;
overflow:hidden;
}

.creator-circle{
width:100%;
margin:3px 0 0;
font-size:12px;
font-weight:700;
line-height:1.35;
color:rgba(220,250,255,0.82);
overflow-wrap:anywhere;
display:-webkit-box;
-webkit-line-clamp:2;
-webkit-box-orient:vertical;
overflow:hidden;
}

.creator-desc{
width:100%;
min-height:56px;
margin:10px 0 0;
font-size:12px;
line-height:1.55;
color:rgba(255,255,255,0.88);
overflow-wrap:anywhere;
display:-webkit-box;
-webkit-line-clamp:3;
-webkit-box-orient:vertical;
overflow:hidden;
text-overflow:ellipsis;
}

.creator-tooltip{
position:absolute;
z-index:30;
top:calc(100% + 12px);
left:50%;
width:min(280px, calc(100vw - 48px));
padding:12px 14px;
border-radius:12px;
border:1px solid rgba(255,255,255,0.74);
background:rgba(14,40,56,0.94);
box-shadow:
0 0 0 1px rgba(255,255,255,0.08),
0 14px 34px rgba(0,0,0,0.22),
0 0 24px rgba(255,255,255,0.18);
backdrop-filter:blur(12px);
color:rgba(255,255,255,0.94);
font-size:12px;
font-weight:700;
line-height:1.65;
text-align:left;
opacity:0;
pointer-events:none;
transform:translate(-50%, -4px);
transition:opacity .18s ease, transform .18s ease;
}

@media(hover:hover){
.creator:hover .creator-tooltip,
.creator:focus-visible .creator-tooltip{
opacity:1;
transform:translate(-50%, 0);
}
}

.creator-badges{
display:flex;
flex-wrap:wrap;
justify-content:center;
gap:6px;
width:100%;
margin-top:auto;
padding-top:12px;
}

.creator-badge{
padding:3px 8px;
border-radius:999px;
font-size:11px;
line-height:1.2;
font-weight:700;
color:white;
}

.creator:hover{
transform:translateY(-6px);
box-shadow:
0 0 0 1px rgba(255,255,255,0.08),
0 0 24px var(--card-glow),
0 12px 28px var(--card-shadow);
}

.creator-badge-exhibitor{
background:#FF6B6B;
}

.creator-badge-gallery{
background:#4DABF7;
}

.creator-badge-promotion{
background:#40C057;
}

.creator-empty{
grid-column:1 / -1;
margin:0;
text-align:center;
opacity:0.8;
}

body.participant-modal-open{
overflow:hidden;
}

.participant-modal[hidden]{
display:none;
}

.participant-modal{
position:fixed;
inset:0;
z-index:2000;
display:grid;
place-items:center;
padding:24px;
background:rgba(5,18,22,0.62);
backdrop-filter:blur(8px);
}

.participant-modal-panel{
position:relative;
width:min(420px, 100%);
padding:26px 22px 22px;
border-radius:14px;
border:1px solid rgba(255,255,255,0.74);
background:linear-gradient(160deg, rgba(94,139,163,0.94), rgba(14,40,56,0.92), rgba(61,161,156,0.84));
box-shadow:
0 0 0 1px rgba(255,255,255,0.08),
0 18px 48px rgba(0,0,0,0.28),
0 0 36px rgba(255,255,255,0.18);
color:white;
}

.participant-modal-close{
position:absolute;
top:10px;
right:10px;
width:36px;
height:36px;
border:1px solid rgba(255,255,255,0.62);
border-radius:50%;
background:rgba(255,255,255,0.12);
color:white;
font-size:24px;
line-height:1;
cursor:pointer;
}

.participant-modal-title{
margin:0;
padding-right:36px;
font-size:20px;
line-height:1.35;
}

.participant-modal-circle{
margin:5px 0 0;
font-size:13px;
font-weight:800;
line-height:1.5;
color:rgba(220,250,255,0.86);
}

.participant-modal-desc{
margin:16px 0 0;
font-size:14px;
font-weight:700;
line-height:1.75;
color:rgba(255,255,255,0.92);
white-space:pre-wrap;
overflow-wrap:anywhere;
}

.participant-modal-badges{
justify-content:flex-start;
margin-top:16px;
padding-top:0;
}

.participant-modal-link{
display:inline-flex;
align-items:center;
justify-content:center;
margin-top:16px;
padding:8px 14px;
border-radius:999px;
border:1px solid rgba(255,255,255,0.66);
background:rgba(255,255,255,0.13);
color:white;
font-size:13px;
font-weight:800;
text-decoration:none;
}

/* ================= GALLERY ================= */

.event-gallery{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
gap:20px;
margin-top:40px;
}

.event-gallery img{
width:100%;
border-radius:12px;
box-shadow:0 10px 24px rgba(255,255,255,0.32);
}

/* ================= REVEAL ================= */

.reveal{
opacity:0;
transform:translateY(24px);
transition:opacity .7s ease, transform .7s ease;
}

.reveal.active{
opacity:1;
transform:translateY(0);
}

/* ================= VIEWER ================= */

#viewer{
position:fixed;
inset:0;
display:flex;
align-items:center;
justify-content:center;
background:rgba(140, 177, 177, 0.5);
backdrop-filter:blur(8px);
z-index:1000;
opacity:0;
visibility:hidden;
transition:opacity .25s ease;
pointer-events:none;
}

#viewer.active{
opacity:1;
visibility:visible;
pointer-events:auto;
}

#viewer:not(.active){
pointer-events:none;
}

#viewer .viewer-content{
max-width:min(94vw,900px);
max-height:88vh;
padding:12px;
background:rgba(255, 255, 255, 0.86);
border-radius:16px;
box-shadow:
0 0 0 1px rgba(255,255,255,0.08),
0 0 24px var(--panel-glow-soft);
border:1px solid rgba(255,255,255,0.78);
display:flex;
flex-direction:column;
align-items:center;
text-align:center;
gap:8px;
transform:scale(.98);
transition:transform .25s ease;
position:relative;
}

#viewer.active .viewer-content{
transform:scale(1);
}

#viewer-img{
display:block;
max-width:min(84vw,860px);
max-height:75vh;
width:auto;
height:auto;
border-radius:12px;
object-fit:contain;
}

.viewer-stage{
display:flex;
align-items:center;
justify-content:center;
gap:12px;
width:100%;
position:relative;
}

.viewer-nav{
width:40px;
height:52px;
border:none;
border-radius:10px;
background:rgba(38,183,160,.7);
color:white;
font-size:28px;
line-height:1;
cursor:pointer;
flex:0 0 auto;
display:inline-flex;
align-items:center;
justify-content:center;
backdrop-filter:blur(6px);
}

.viewer-nav:hover{
background:rgba(38,183,160,.9);
}

.viewer-nav:active{
transform:translateY(1px);
}

.viewer-author{
margin-top:8px;
font-size:14px;
width:100%;
display:flex;
justify-content:center;
align-items:center;
gap:8px;
flex-wrap:wrap;
}

.viewer-author a{
color:#26B7A0;
font-weight:700;
text-decoration:none;
}

#viewer-title{
color:#757a7c;
font-weight:700;
}

.viewer-meta-sep{
color:#a0b0bf;
}

.viewer-author a:hover{
text-decoration:underline;
}

@media(min-width:769px){

.viewer-content{
overflow:visible;
}

.viewer-nav{
position:absolute;
top:50%;
transform:translateY(-50%);
z-index:3;
}

.viewer-prev{
left:-68px;
}

.viewer-next{
right:-68px;
}

.viewer-nav:active{
transform:translateY(calc(-50% + 1px));
}

}

/* ================= MOBILE ================= */

@media(max-width:1024px){

.creator-grid{
grid-template-columns:repeat(2, minmax(0, 220px));
}

}

@media(max-width:768px){

.hero{
min-height:auto;
padding:24px 16px 52px;
}

.hero-panel{
padding:28px 16px;
}

.hero-logo{
width:min(520px, 90vw);
}

.creator-grid{
grid-template-columns:minmax(0, 240px);
justify-content:center;
gap:22px;
}

.subtitle{
font-size:18px;
}

.section{
position:relative;
padding:80px 20px;
z-index: 5;
}

.glass{
padding:35px;
}

.schedule-card{
flex-direction:column;
}

.zigzag{
grid-template-columns:1fr;
}

.info-row{
grid-template-columns:1fr;
gap:6px;
}

.viewer-content{
gap:8px;
}

.viewer-nav{
width:34px;
height:42px;
font-size:24px;
}

}