@charset "utf-8";
  :root{
    --bg: #ffffff;
    --bg-soft: #F8FAFC;
    --line: #dfece6;
    --ink: #3c3c3a;
    --ink-soft: #8b8f8c;
    --accent: #8ab6dc;
    --accent-soft: #e3f5ec;
    --accent2: #9b8ea0;
    --accent2-soft: #e6f1fa;
    --r18: #c9615f;
    --radius: 16px;
  }

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

  html{ scroll-behavior:smooth; }

  body{
    background:var(--bg);
    color:var(--ink);
    font-family:"Noto Sans JP", sans-serif;
    font-weight:300;
    line-height:1.9;
    letter-spacing:.02em;
  }

  h1,h2,h3,.brand,.stamp-text{
    font-family:"Zen Maru Gothic", sans-serif;
  }

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

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

  .wrap{
    max-width:1040px;
    margin:0 auto;
    padding:0 32px;
  }

  /* ---------- Header ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:rgba(255,255,255,.9);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    display:flex; align-items:center; justify-content:space-between;
    padding:18px 32px;
    max-width:1040px; margin:0 auto;
  }
  .brand{
    font-size:20px; font-weight:700; letter-spacing:.08em;
    display:flex; align-items:center; gap:10px;
  }
  .brand .dot{
    width:8px; height:8px; border-radius:50%;
    background:var(--accent);
    display:inline-block;
  }
  nav ul{
    list-style:none; display:flex; gap:36px;
  }
  nav a{
    font-size:13px; letter-spacing:.12em; color:var(--ink-soft);
    position:relative; padding-bottom:4px;
  }
  nav a:hover{ color:var(--ink); }
  nav a:focus-visible, a:focus-visible, button:focus-visible{
    outline:2px solid var(--accent); outline-offset:3px;
  }

  /* ---------- Site Intro ---------- */
  .site-intro{
    padding:28px 32px 0;
    text-align:center;
  }
  .site-intro p{
    font-size:13px; line-height:1.9;
    color:var(--ink-soft);
    letter-spacing:.03em;
  }

  /* ---------- Hero ---------- */
  .hero{
    padding:56px 32px 30px;
  }
  .hero-img{
    max-width:80%;
    margin:0 auto;
    aspect-ratio:16/8;
    border-radius:var(--radius);
    overflow:hidden;
    border:1px solid var(--line);
    background:
      linear-gradient(135deg, var(--bg-soft) 25%, transparent 25%) -10px 0/28px 28px,
      linear-gradient(225deg, var(--bg-soft) 25%, transparent 25%) -10px 0/28px 28px,
      #fff;
    display:flex; align-items:center; justify-content:center;
    color:var(--ink-soft);
    font-size:13px; letter-spacing:.15em;
  }
  .hero-img img{
    width:100%; height:100%;
    object-fit:cover;
  }

  /* ---------- Section shared ---------- */
  section{ padding:90px 0; }
  .section-head{
    display:flex; align-items:baseline; gap:18px;
    margin-bottom:52px;
    border-bottom:1px solid var(--line);
    padding-bottom:20px;
  }
  .section-head .no{
    font-family:"Zen Maru Gothic", sans-serif;
    font-size:13px; color:var(--accent);
    border:1px solid var(--accent);
    border-radius:50%;
    width:26px; height:26px;
    display:flex; align-items:center; justify-content:center;
    flex-shrink:0;
  }
  .section-head h2{
    font-size:24px; font-weight:700; letter-spacing:.06em;
  }
  .section-head .en{
    margin-left:auto;
    font-size:11px; letter-spacing:.2em; color:var(--ink-soft);
  }

  .bg-soft{ background:var(--bg-soft); }

  /* ---------- Illustration Gallery ---------- */
  .gallery{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:22px;
  }
  .g-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
    transition:transform .25s ease, box-shadow .25s ease;
    width:100%;
    text-align:left;
    cursor:pointer;
    font:inherit;
    color:inherit;
    display:block;
    padding:0;
    appearance:none;
    -webkit-appearance:none;
  }
  .g-card:hover{
    transform:translateY(-4px);
    box-shadow:0 14px 30px rgba(111,191,160,.18);
  }

  /* ---------- Lightbox ---------- */
  .lightbox{
    position:fixed; inset:0; z-index:100;
    background:rgba(40,50,46,.72);
    display:flex; align-items:center; justify-content:center;
    padding:40px 24px;
    opacity:0; pointer-events:none;
    transition:opacity .25s ease;
  }
  .lightbox.is-open{ opacity:1; pointer-events:auto; }
  .lightbox-box{
    position:relative;
    background:#fff;
    border-radius:var(--radius);
    overflow:hidden;
    width:min(820px, 94vw);
    height:min(820px, 90vh);
    transform:translateY(12px) scale(.98);
    transition:transform .25s ease;
    box-shadow:0 20px 50px rgba(0,0,0,.18);
  }
  .lightbox.is-open .lightbox-box{ transform:translateY(0) scale(1); }
  .lightbox-img{
    width:100%; height:100%;
    background:
      linear-gradient(135deg, var(--bg-soft) 25%, transparent 25%) -10px 0/24px 24px,
      linear-gradient(225deg, var(--bg-soft) 25%, transparent 25%) -10px 0/24px 24px,
      #fff;
    display:flex; align-items:center; justify-content:center;
    color:var(--ink-soft);
    font-size:13px; letter-spacing:.1em;
  }
  .lightbox-img img{
    max-width:100%; max-height:100%;
    width:auto; height:auto;
    object-fit:contain;
  }
  .lightbox-close{
    position:absolute; top:14px; right:14px;
    width:34px; height:34px;
    border:none;
    border-radius:50%;
    background:rgba(255,255,255,.9);
    color:var(--ink);
    font-size:16px;
    cursor:pointer;
    display:flex; align-items:center; justify-content:center;
    box-shadow:0 4px 10px rgba(0,0,0,.1);
  }
  .lightbox-close:hover{ background:#fff; color:var(--accent); }
  .g-thumb{
    aspect-ratio:4/5;
    background:
      linear-gradient(135deg, var(--bg-soft) 25%, transparent 25%) -10px 0/20px 20px,
      linear-gradient(225deg, var(--bg-soft) 25%, transparent 25%) -10px 0/20px 20px,
      #fff;
    display:flex; align-items:center; justify-content:center;
    color:var(--ink-soft);
    font-size:11px; letter-spacing:.1em;
    border-bottom:1px solid var(--line);
  }
  .g-info{ padding:16px 18px 20px; }
  .g-info .tag{
    font-size:10px; color:var(--accent);
    border:1px solid var(--accent-soft);
    background:var(--accent-soft);
    letter-spacing:.1em; margin-bottom:6px;
    padding:3px 9px; border-radius:20px;
    display:inline-block;
  }
  .g-info h3{ font-size:15px; font-weight:500; margin-bottom:4px; }
  .g-info p{ font-size:12px; color:var(--ink-soft); }

  /* ---------- Manga Teaser ---------- */
  .manga-teaser{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:22px;
    margin-bottom:28px;
  }
  .m-card{
    display:block;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
    transition:transform .25s ease, box-shadow .25s ease;
  }
  .m-card:hover{
    transform:translateY(-4px);
    box-shadow:0 14px 30px rgba(138,182,220,.2);
  }
  .m-thumb{
    aspect-ratio:3/4;
    background:
      linear-gradient(135deg, var(--accent2-soft) 25%, transparent 25%) -10px 0/20px 20px,
      linear-gradient(225deg, var(--accent2-soft) 25%, transparent 25%) -10px 0/20px 20px,
      #fff;
    display:flex; align-items:center; justify-content:center;
    color:var(--ink-soft);
    font-size:11px; letter-spacing:.1em;
    border-bottom:1px solid var(--line);
  }
  .m-info{ padding:14px 16px 18px; }
  .m-info .tag{
    font-size:10px; color:var(--accent2);
    border:1px solid var(--accent2-soft);
    background:var(--accent2-soft);
    letter-spacing:.1em; margin-bottom:6px;
    padding:3px 9px; border-radius:20px;
    display:inline-block;
  }
  .m-info h3{ font-size:14px; font-weight:500; }
  .m-info p{
    font-size:12px; color:var(--ink-soft);
    margin-top:4px;
  }

  /* ---------- Age-restricted divider ---------- */
  .age-divider{
    display:flex; align-items:center; gap:10px;
    margin:36px 0 20px;
  }
  .age-divider .r18-badge{
    font-size:11px; font-weight:700; color:#fff;
    background:var(--r18);
    padding:3px 10px; border-radius:20px;
    letter-spacing:.05em;
    flex-shrink:0;
  }
  .age-divider .age-label{
    font-size:12px; color:var(--ink-soft);
    letter-spacing:.05em; white-space:nowrap;
  }
  .age-divider::after{
    content:''; flex:1; height:1px; background:var(--line);
  }
  .tag-r18{
    color:#fff !important;
    background:var(--r18) !important;
    border-color:var(--r18) !important;
    margin-left:6px;
  }

  .more-link{
    display:inline-block;
    font-size:12px; letter-spacing:.08em;
    color:var(--accent2);
    border-bottom:1px solid var(--accent2);
    padding-bottom:2px;
  }
  .more-link:hover{ opacity:.7; }

  /* ---------- Link Collection ---------- */
  .link-grid{
    display:grid;
    grid-template-columns:repeat(2, 1fr);
    gap:18px;
  }
  .link-card{
    position:relative;
    display:block;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:22px 44px 22px 22px;
    transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  }
  .link-card:hover{
    transform:translateY(-3px);
    box-shadow:0 10px 24px rgba(111,191,160,.15);
    border-color:var(--accent);
  }
  .link-card h3{ font-size:14.5px; font-weight:500; margin-bottom:6px; }
  .link-card p{ font-size:12px; color:var(--ink-soft); }
  .link-arrow{
    position:absolute; top:22px; right:20px;
    color:var(--accent);
    font-size:14px;
  }

  /* ---------- Novel List ---------- */
  .novel-list{
    display:flex; flex-direction:column;
  }
  .n-item{
    display:grid;
    grid-template-columns:100px 1fr auto;
    align-items:center;
    gap:28px;
    padding:26px 0;
    border-bottom:1px solid var(--line);
  }
  .n-item:first-child{ border-top:1px solid var(--line); }
  .n-date{
    font-size:11px; color:var(--ink-soft); letter-spacing:.05em;
  }
  .n-main h3{
    font-size:17px; font-weight:500; margin-bottom:8px;
  }
  .n-main p{
    font-size:13px; color:var(--ink-soft);
    max-width:520px;
  }
  .n-tags{ margin-top:10px; display:flex; gap:8px; flex-wrap:wrap; }
  .n-tags span{
    font-size:10px; color:var(--accent2);
    border:1px solid var(--accent2-soft);
    background:var(--accent2-soft);
    padding:3px 9px;
    border-radius:20px;
  }
  .n-link{
    font-size:12px; letter-spacing:.08em;
    white-space:nowrap;
    color:var(--ink);
    border-bottom:1px solid var(--ink);
    padding-bottom:2px;
  }
  .n-link:hover{ color:var(--accent2); border-color:var(--accent2); }

  /* ---------- About / Profile ---------- */
  .about{
    display:grid;
    grid-template-columns:200px 1fr;
    gap:50px;
    align-items:start;
  }
  .about-icon{
    width:150px; height:150px;
    border-radius:50%;
    background:var(--bg-soft);
    border:1px solid var(--line);
    display:flex; align-items:center; justify-content:center;
    color:var(--ink-soft);
    font-size:11px;
  }
  .about h2{ font-size:22px; margin-bottom:16px; }
  .about p{ font-size:14px; color:var(--ink-soft); max-width:520px; margin-bottom:14px; }
  .about .links{ display:flex; gap:20px; margin-top:20px; }
  .about .links a{
    font-size:12px; letter-spacing:.08em;
    border-bottom:1px solid var(--ink-soft);
    padding-bottom:2px;
  }
  .about .links a:hover{ color:var(--accent); border-color:var(--accent); }

  /* ---------- Footer ---------- */
  footer{
    border-top:1px solid var(--line);
    padding:40px 32px;
    text-align:center;
  }
  footer p{
    font-size:11px; color:var(--ink-soft); letter-spacing:.05em;
    line-height:1.8;
  }
  footer .caution{
    max-width:520px; margin:0 auto 14px;
    font-size:11px;
  }

  /* ---------- Responsive ---------- */
  @media (max-width: 760px){
    .header-inner{ padding:16px 20px; }
    nav ul{ gap:20px; }
    .hero{ padding:36px 20px 20px; }
    .wrap{ padding:0 20px; }
    .gallery{ grid-template-columns:repeat(2, 1fr); }
    .manga-teaser{ grid-template-columns:repeat(2, 1fr); }
    .link-grid{ grid-template-columns:1fr; }
    .n-item{ grid-template-columns:1fr; gap:8px; }
    .about{ grid-template-columns:1fr; }
    .about-icon{ width:100px; height:100px; }
  }

  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior:auto; }
    .g-card{ transition:none; }
  }
/* ---------- Back to Top ---------- */
#backToTop{
  position:fixed;
  right:24px;
  bottom:24px;
  width:52px;
  height:52px;
  border:none;
  border-radius:50%;
  background:rgba(255,255,255,.95);
  border:1px solid var(--line);
  box-shadow:0 8px 20px rgba(0,0,0,.12);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  color:var(--ink);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:.3s ease;
  z-index:999;
}

#backToTop.show{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}

#backToTop:hover{
  background:#fff;
  transform:translateY(-3px);
}

@media (max-width:760px){
  #backToTop{
    left:16px;
    bottom:16px;
    width:46px;
    height:46px;
  }
}
  /* ---------- お知らせ ---------- */
  .notice-card{
    max-width:80%;
    margin:24px auto 0;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:22px 28px;
  }
  .notice-title{
    display:flex; align-items:center; gap:8px;
    font-size:12px; letter-spacing:.14em; color:var(--ink-soft);
    margin-bottom:14px;
  }
  .notice-title .dot{
    width:6px; height:6px; border-radius:50%;
    background:var(--accent);
    display:inline-block;
  }
  .notice-list{ list-style:none; display:flex; flex-direction:column; }
  .notice-item{
    display:flex; align-items:baseline; gap:14px;
    font-size:13px;
    padding:12px 0;
    border-bottom:1px dashed var(--line);
  }
  .notice-item:first-child{ padding-top:0; }
  .notice-item:last-child{ border-bottom:none; padding-bottom:0; }
  .notice-badge{
    flex-shrink:0;
    font-size:10px; letter-spacing:.05em;
    padding:3px 9px;
    border-radius:20px;
    color:#fff;
    background:var(--accent);
  }
  .notice-item.is-event .notice-badge{ background:var(--accent2); }
  .notice-date{
    flex-shrink:0;
    font-size:11px; color:var(--ink-soft); letter-spacing:.05em;
    min-width:80px;
  }
  /* ---------- フリーテキスト ---------- */
.text-plain{
  font-size:13px;
  color:var(--ink-soft);
  line-height:1.9;
  margin-bottom:24px;
}