:root{
  --bg:#f4f1e8;
  --bg-soft:#fbf8f1;
  --surface:rgba(255,255,255,0.78);
  --surface-strong:#fffdf8;
  --surface-alt:#f0ece2;
  --text:#1f2933;
  --muted:#5f6b76;
  --line:rgba(78,91,107,0.16);
  --shadow:0 24px 60px rgba(45,57,70,0.10);
  --shadow-soft:0 12px 28px rgba(45,57,70,0.08);
  --accent:#58b8ea;
  --accent-strong:#2b95d1;
  --accent-soft:#eaf7ff;
  --secondary:#2f7d6a;
  --secondary-soft:#e9f7f2;
  --radius-xl:28px;
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:12px;
}

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  color:var(--text);
  font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic","YuGothic",-apple-system,BlinkMacSystemFont,sans-serif;
  line-height:1.7;
  background:
    radial-gradient(circle at top left, rgba(217,111,61,0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(47,125,106,0.16), transparent 24%),
    linear-gradient(180deg, #f7f3ea 0%, #f4f1e8 34%, #fbf8f1 100%);
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(rgba(255,255,255,0.08), rgba(255,255,255,0.08)),
    radial-gradient(circle at 1px 1px, rgba(42,54,66,0.05) 1px, transparent 0);
  background-size:auto, 22px 22px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,0.35), transparent 88%);
  opacity:.55;
}

a{
  color:inherit;
}

img{
  max-width:100%;
}

header{
  position:sticky;
  top:0;
  z-index:20;
  padding:18px 0;
  background:rgba(244,241,232,0.72);
  backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(78,91,107,0.08);
}

.container{
  width:min(1120px, calc(100% - 32px));
  margin:0 auto;
}

.hero{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:20px;
  align-items:center;
  min-width:0;
}

.hero > div{
  min-width:0;
}

.logo{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  width:82px;
  height:82px;
  flex:0 0 auto;
  border-radius:24px;
  background:linear-gradient(145deg, rgba(255,255,255,0.95), rgba(248,239,229,0.94));
  box-shadow:var(--shadow-soft);
  border:1px solid rgba(255,255,255,0.9);
}

.logo::after{
  content:"";
  position:absolute;
  inset:8px;
  border-radius:18px;
  background:linear-gradient(160deg, rgba(217,111,61,0.10), rgba(47,125,106,0.12));
  z-index:0;
}

.logo img{
  position:relative;
  z-index:1;
  width:52px;
  height:52px;
  object-fit:contain;
}

h1,h2,h3{
  margin:0;
  color:#15202b;
  letter-spacing:.01em;
}

h1{
  font-family:"Hiragino Maru Gothic ProN","Arial Rounded MT Bold","Hiragino Sans","Noto Sans JP",sans-serif;
  font-size:clamp(2rem,4vw,3.1rem);
  line-height:1.12;
}

h2{
  font-size:clamp(1.4rem,2.3vw,2rem);
  line-height:1.28;
  margin-bottom:14px;
}

h3{
  font-size:1.1rem;
  line-height:1.4;
}

p{
  margin:0 0 14px;
}

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

.lead{
  margin-top:8px;
  max-width:760px;
  color:var(--muted);
  font-size:1rem;
  overflow-wrap:anywhere;
}

.muted{
  color:var(--muted);
}

main.container{
  margin-top:34px;
  margin-bottom:72px;
}

.page-intro{
  display:grid;
  grid-template-columns:minmax(0,1.45fr) minmax(280px,0.9fr);
  gap:18px;
  margin-bottom:18px;
}

.page-intro__panel,
.page-intro__aside{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-xl);
  border:1px solid rgba(255,255,255,0.72);
  background:linear-gradient(180deg, rgba(255,255,255,0.88), rgba(255,252,247,0.76));
  box-shadow:var(--shadow);
}

.page-intro__panel{
  padding:34px;
}

.hero-banner{
  display:block;
  margin:0 0 20px;
  border-radius:20px;
  overflow:hidden;
  box-shadow:0 18px 36px rgba(45,57,70,0.12);
}

.hero-banner img{
  display:block;
  width:100%;
  height:auto;
}

.page-intro__panel::before,
.page-intro__aside::before{
  content:"";
  position:absolute;
  inset:auto -40px -40px auto;
  width:180px;
  height:180px;
  border-radius:999px;
  background:radial-gradient(circle, rgba(217,111,61,0.18), transparent 68%);
}

.page-intro__aside{
  padding:26px;
  background:linear-gradient(180deg, rgba(244,250,247,0.92), rgba(255,250,244,0.84));
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:16px;
  padding:7px 12px;
  border-radius:999px;
  background:rgba(255,255,255,0.66);
  border:1px solid rgba(78,91,107,0.09);
  color:#4d5a66;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
}

.intro-copy{
  max-width:720px;
  font-size:1.02rem;
}

.intro-actions,
.quick-links{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}

.store-badge{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  line-height:0;
}

.store-badge img{
  display:block;
  width:auto;
  height:52px;
}

.intro-stats{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(148px,1fr));
  gap:12px;
  margin-top:24px;
}

.stat-chip{
  padding:16px 18px;
  border-radius:18px;
  background:rgba(255,255,255,0.72);
  border:1px solid rgba(78,91,107,0.08);
}

.stat-chip strong{
  display:block;
  margin-bottom:4px;
  font-size:1.5rem;
  line-height:1.1;
}

.quick-links a,
.ghost-link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:10px 14px;
  border-radius:999px;
  background:rgba(255,255,255,0.74);
  border:1px solid rgba(78,91,107,0.10);
  text-decoration:none;
  font-weight:600;
}

.quick-links a:hover,
.ghost-link:hover{
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(45,57,70,0.08);
}

.aside-note{
  position:relative;
  z-index:1;
}

.aside-note h2{
  font-size:1.3rem;
}

.aside-list{
  margin:16px 0 0;
  padding:0;
  list-style:none;
  display:grid;
  gap:12px;
}

.aside-list li{
  border-radius:16px;
  background:rgba(255,255,255,0.72);
  border:1px solid rgba(78,91,107,0.08);
  box-shadow:0 8px 18px rgba(45,57,70,0.05);
}

.aside-link{
  display:block;
  padding:14px 16px;
  text-decoration:none;
  transition:transform .16s ease, background-color .16s ease, box-shadow .16s ease;
}

.aside-link:hover{
  transform:translateY(-1px);
  background:rgba(255,255,255,0.9);
}

.aside-link__row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:4px;
}

.aside-link strong{
  display:block;
  color:#4f5c67;
  font-size:1rem;
}

.aside-link span{
  display:block;
  color:var(--muted);
  font-size:.95rem;
  line-height:1.6;
}

.card{
  margin-top:18px;
  padding:26px;
  border-radius:var(--radius-lg);
  border:1px solid rgba(255,255,255,0.72);
  background:var(--surface);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow-soft);
}

.card > *{
  position:relative;
  z-index:1;
}

.card:first-child{
  margin-top:0;
}

.card p,
.blog-entry p,
.article-main p,
.entry-block p,
.word-item p{
  overflow-wrap:anywhere;
}

.section-accent{
  background:
    linear-gradient(180deg, rgba(255,251,247,0.96), rgba(255,255,255,0.82)),
    linear-gradient(135deg, rgba(217,111,61,0.05), rgba(47,125,106,0.04));
}

.features{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:14px;
}

.features li{
  padding:18px;
  border-radius:18px;
  background:rgba(255,255,255,0.66);
  border:1px solid rgba(78,91,107,0.09);
}

.features li strong{
  display:block;
  margin-bottom:8px;
  font-size:1rem;
}

.store-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr));
  gap:14px;
  margin-top:16px;
}

.app-facts-inline{
  margin:8px 0 0;
  color:#7a8188;
  font-size:13px;
}

.store-card{
  min-width:0;
  padding:18px;
  border-radius:20px;
  border:1px solid rgba(78,91,107,0.08);
  background:linear-gradient(180deg, rgba(255,255,255,0.86), rgba(252,249,243,0.78));
  box-shadow:var(--shadow-soft);
}

.store-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-bottom:10px;
}

.store-meta h3{
  font-size:1.25rem;
}

.store-label,
.pill,
.faq-tag,
.tag{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:fit-content;
  padding:6px 11px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.03em;
}

.store-label.ios{
  background:#eaf1ff;
  color:#315ea8;
}

.store-label.android{
  background:#e6f6ee;
  color:#256553;
}

.store-btn{
  width:100%;
  margin-top:12px;
  justify-content:center;
}

.coming-soon{
  opacity:.98;
}

.blog-hero{
  padding:30px;
  border-radius:var(--radius-xl);
  background:
    linear-gradient(145deg, rgba(252,255,253,0.94), rgba(248,243,235,0.84)),
    linear-gradient(180deg, rgba(47,125,106,0.05), rgba(217,111,61,0.03));
  box-shadow:var(--shadow);
}

.blog-hero__meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
}

.pill{
  background:#edf8f3;
  color:#246452;
}

.blog-summary{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:14px;
}

.blog-stat{
  padding:18px;
  border-radius:18px;
  border:1px solid rgba(78,91,107,0.08);
  background:rgba(255,255,255,0.72);
}

.blog-stat strong{
  display:block;
  font-size:2rem;
  line-height:1;
  margin-bottom:6px;
}

.blog-list{
  display:grid;
  gap:18px;
}

.blog-entry{
  padding:26px;
  border-radius:22px;
  border:1px solid rgba(78,91,107,0.08);
  background:rgba(255,255,255,0.72);
  box-shadow:var(--shadow-soft);
}

.blog-entry__head{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  margin-bottom:10px;
  align-items:flex-start;
}

.blog-entry__title{
  font-size:clamp(1.4rem,2vw,1.8rem);
  line-height:1.35;
}

.blog-entry__day{
  color:#246452;
  font-weight:700;
  font-size:13px;
  letter-spacing:.06em;
}

.blog-entry__meta{
  color:#67717b;
  font-size:14px;
}

.article-layout{
  display:grid;
  grid-template-columns:minmax(220px,280px) minmax(0,1fr);
  gap:24px;
  align-items:start;
}

.article-sidebar{
  position:sticky;
  top:112px;
}

.sidebar-links{
  display:grid;
  gap:10px;
}

.sidebar-links a{
  display:block;
  padding:12px 14px;
  border-radius:14px;
  border:1px solid rgba(78,91,107,0.08);
  background:rgba(255,255,255,0.7);
  text-decoration:none;
  color:#314150;
  font-weight:600;
}

.sidebar-links .sidebar-term{
  display:block;
  padding:12px 14px;
  border-radius:14px;
  border:1px solid rgba(78,91,107,0.08);
  background:rgba(255,255,255,0.7);
}

.sidebar-links .sidebar-term strong{
  display:block;
  margin-bottom:4px;
  color:#1f2933;
  font-size:14px;
}

.sidebar-links .sidebar-term span{
  display:block;
  color:#5f6b76;
  font-size:13px;
  line-height:1.5;
}

.download-code{
  margin-top:14px;
  padding:16px;
  border-radius:18px;
  border:1px solid rgba(78,91,107,0.08);
  background:rgba(255,255,255,0.72);
}

.download-code h3{
  margin-bottom:10px;
  font-size:1rem;
}

.download-code__row{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:8px;
}

.download-code__input{
  width:100%;
  min-width:0;
  padding:10px 12px;
  border:1px solid rgba(78,91,107,0.12);
  border-radius:12px;
  background:#fff;
  color:#314150;
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
}

.download-code__button{
  padding:10px 14px;
  border:0;
  border-radius:12px;
  background:#2b95d1;
  color:#fff;
  font-size:13px;
  font-weight:700;
  cursor:pointer;
}

.sidebar-links a:hover{
  background:#fffbf7;
}

.article-main{
  min-width:0;
}

.article-cta{
  display:block;
  margin-top:18px;
  border-radius:24px;
  overflow:hidden;
  box-shadow:var(--shadow-soft);
  line-height:0;
}

.article-cta img{
  display:block;
  width:100%;
  height:auto;
}

.article-pager{
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:12px;
  margin-top:18px;
}

.article-pager__link{
  display:block;
  padding:16px 18px;
  border-radius:20px;
  border:1px solid rgba(78,91,107,0.08);
  background:rgba(255,255,255,0.76);
  text-decoration:none;
  box-shadow:var(--shadow-soft);
}

.article-pager__label{
  display:block;
  margin-bottom:4px;
  color:#6a757f;
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
}

.article-pager__title{
  display:block;
  color:#1f2933;
  font-size:1rem;
  font-weight:700;
}

.article-pager__link.is-next{
  text-align:right;
}

.article-layout > footer{
  grid-column:1 / -1;
  margin-top:12px;
}

.entry-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:14px;
}

.entry-grid{
  display:grid;
  gap:18px;
}

.entry-block,
.word-item{
  padding:26px;
  border-radius:22px;
  border:1px solid rgba(78,91,107,0.08);
  background:rgba(255,255,255,0.76);
}

.entry-block h2{
  margin-bottom:18px;
}

.entry-block--column{
  border-left:4px solid rgba(43,149,209,0.38);
  background:linear-gradient(180deg, rgba(234,247,255,0.88), rgba(255,255,255,0.8));
}

.entry-block--column h2{
  font-size:1.2rem;
}

.entry-block--column p{
  color:#4f5c67;
  font-size:.95rem;
  line-height:1.75;
}

.entry-example{
  margin:0 0 14px;
  padding:14px 16px;
  border-radius:16px;
  background:#f3faf7;
  border-left:4px solid #8dc3b2;
  color:#30433e;
}

.word-list{
  display:grid;
  gap:16px;
}

.word-item h3{
  margin-bottom:12px;
  font-size:1.35rem;
}

.article-sidebar .card,
.article-main > .card{
  border-radius:24px;
}

.howto-list{
  list-style:none;
  padding:0;
  margin:18px 0 0;
  display:grid;
  gap:14px;
}

.howto-item{
  display:grid;
  grid-template-columns:minmax(180px,240px) 1fr;
  gap:18px;
  align-items:center;
  padding:16px;
  border-radius:20px;
  border:1px solid rgba(78,91,107,0.08);
  background:rgba(255,255,255,0.66);
}

.howto-image{
  width:100%;
  min-height:148px;
  max-width:240px;
  padding:12px;
  border:2px dashed #cfd8df;
  border-radius:18px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
  color:#60708b;
  background:#f8fafb;
  text-align:center;
}

.howto-image.is-filled{
  min-height:0;
  height:170px;
  padding:0;
  overflow:hidden;
  border-style:solid;
}

.howto-image.is-filled img{
  display:block;
  width:100%;
  height:100%;
  object-fit:contain;
}

.howto-image-button{
  display:block;
  width:100%;
  height:100%;
  padding:0;
  border:0;
  background:transparent;
  cursor:zoom-in;
  line-height:0;
}

.howto-image p{
  margin:0;
  font-weight:600;
}

.howto-image code{
  font-size:12px;
}

.howto-text h3{
  margin-bottom:8px;
}

.image-modal{
  position:fixed;
  inset:0;
  display:none;
  z-index:999;
}

.image-modal.is-open{
  display:block;
}

.image-modal__backdrop{
  position:absolute;
  inset:0;
  background:rgba(15,23,42,0.72);
}

.image-modal__dialog{
  position:relative;
  width:min(960px,calc(100% - 32px));
  max-height:calc(100vh - 32px);
  margin:16px auto;
  padding:16px;
  overflow:auto;
  border-radius:22px;
  background:#fff;
}

.image-modal__header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-bottom:12px;
}

.image-modal__header h2{
  margin-bottom:0;
  font-size:1rem;
}

.image-modal__close{
  width:36px;
  height:36px;
  border:0;
  border-radius:10px;
  background:#ece7de;
  cursor:pointer;
  font-size:22px;
  line-height:1;
}

.image-modal__preview{
  display:block;
  width:100%;
  height:auto;
  border-radius:14px;
}

.image-modal__link{
  display:inline-block;
  margin-top:12px;
  color:#315ea8;
  font-weight:600;
}

.contact{
  display:flex;
  flex-direction:column;
  gap:10px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  width:fit-content;
  max-width:100%;
  padding:12px 18px;
  border-radius:999px;
  border:1px solid rgba(43,149,209,0.18);
  background:linear-gradient(180deg, var(--accent), var(--accent-strong));
  color:#fff;
  text-decoration:none;
  font-weight:700;
  box-shadow:0 16px 28px rgba(43,149,209,0.18);
  transition:transform .16s ease, box-shadow .16s ease, opacity .16s ease;
  overflow-wrap:anywhere;
}

.btn:hover{
  transform:translateY(-1px);
  box-shadow:0 18px 30px rgba(43,149,209,0.22);
}

.btn.disabled{
  background:linear-gradient(180deg,#d9d1c5,#c9c0b2);
  border-color:rgba(78,91,107,0.08);
  color:#5c646d;
  box-shadow:none;
  cursor:not-allowed;
  pointer-events:none;
}

.btn-secondary{
  background:linear-gradient(180deg, #3f8f7b, #2f7d6a);
  border-color:rgba(47,125,106,0.18);
  box-shadow:0 16px 28px rgba(47,125,106,0.18);
}

.faq-toolbar{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:18px;
  align-items:end;
}

.faq-search{
  display:grid;
  gap:8px;
}

.faq-search__label{
  font-size:14px;
  font-weight:700;
}

.faq-search input{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  border:1px solid rgba(78,91,107,0.14);
  border-radius:16px;
  font:inherit;
  background:rgba(255,255,255,0.84);
}

.faq-search input:focus{
  outline:2px solid rgba(217,111,61,0.22);
  outline-offset:2px;
}

.faq-result-count{
  margin:16px 0 0;
  color:var(--muted);
}

.faq-list{
  display:grid;
  gap:16px;
  margin-top:18px;
}

.faq-item{
  margin-top:0;
}

.faq-item__head{
  display:grid;
  gap:12px;
  margin-bottom:12px;
}

.faq-item__head h2{
  margin-bottom:0;
  font-size:1.2rem;
}

.faq-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

.faq-tag{
  background:#edf2ff;
  color:#3e558d;
}

.faq-empty{
  text-align:center;
}

.roadmap{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:16px;
}

.roadmap li{
  position:relative;
  padding:18px 18px 18px 22px;
  border-radius:18px;
  border-left:4px solid #d8ddd4;
  background:rgba(255,255,255,0.68);
}

.roadmap li::before{
  content:"";
  position:absolute;
  left:-10px;
  top:22px;
  width:16px;
  height:16px;
  border-radius:50%;
  background:#d8ddd4;
  box-shadow:0 0 0 4px rgba(244,241,232,0.96);
}

.tag{
  margin-bottom:8px;
}

.tag.now{
  background:#ffe8dc;
  color:#aa4e26;
}

.tag.next{
  background:#e8f4ef;
  color:#2d715f;
}

.tag.future{
  background:#edf2ff;
  color:#4c5d99;
}

footer{
  margin:40px 0 0;
  text-align:center;
  color:var(--muted);
  font-size:13px;
}

@media (max-width:900px){
  .page-intro{
    grid-template-columns:1fr;
  }

  .article-layout{
    grid-template-columns:1fr;
  }

  .article-sidebar{
    position:static;
  }
}

@media (max-width:720px){
  header{
    padding:14px 0;
  }

  .container{
    width:min(1120px, calc(100% - 24px));
  }

  .hero{
    gap:14px;
  }

  .logo{
    width:68px;
    height:68px;
    border-radius:20px;
  }

  .logo img{
    width:44px;
    height:44px;
  }

  main.container{
    margin-top:22px;
    margin-bottom:56px;
  }

  .page-intro__panel,
  .page-intro__aside,
  .card,
  .blog-entry,
  .entry-block,
  .word-item{
    padding:22px;
    border-radius:20px;
  }

  .howto-item{
    grid-template-columns:1fr;
  }

  .howto-image{
    max-width:none;
  }

  .store-grid,
  .blog-summary,
  .intro-stats,
  .features{
    grid-template-columns:1fr;
  }

  .article-pager{
    grid-template-columns:1fr;
  }

  .article-pager__link.is-next{
    text-align:left;
  }

  .store-badge img{
    height:48px;
  }
}

@media (max-width:480px){
  h1{
    font-size:1.8rem;
  }

  h2{
    font-size:1.25rem;
  }

  .hero{
    grid-template-columns:60px minmax(0,1fr);
    align-items:start;
  }

  .logo{
    width:60px;
    height:60px;
    border-radius:18px;
  }

  .logo img{
    width:38px;
    height:38px;
  }

  .page-intro__panel,
  .page-intro__aside,
  .card,
  .blog-hero,
  .blog-entry,
  .entry-block,
  .word-item,
  .howto-item{
    padding:18px;
    border-radius:18px;
  }

  .btn{
    width:100%;
  }

  .quick-links a,
  .ghost-link{
    width:100%;
  }

  .store-badge{
    width:100%;
    justify-content:flex-start;
  }

  .store-badge img{
    height:46px;
  }

  .howto-image.is-filled{
    height:190px;
  }

  .image-modal__dialog{
    width:min(960px,calc(100% - 20px));
    max-height:calc(100vh - 20px);
    margin:10px auto;
    padding:12px;
  }
}