:root{
  --bg: #fbfaf6;
  --paper: rgba(255,255,255,.88);
  --paper-strong: #ffffff;
  --ink: #111111;
  --muted: rgba(17,17,17,.68);
  --line: rgba(17,17,17,.1);
  --accent: #6fb3c9;
  --accent-dark: #5aa7c0;
  --accent-soft: rgba(111,179,201,.12);
  --shadow: 0 18px 42px rgba(0,0,0,.08);
  --radius: 24px;
  --radius-pill: 999px;
  --shell: 1120px;
  --serif: "Noto Serif JP", serif;
  --sans: "Noto Sans JP", system-ui, -apple-system, sans-serif;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(111,179,201,.15), transparent 28%),
    linear-gradient(180deg, #fcfcfa 0%, #ffffff 38%, #f5f3ed 100%);
  font-family: var(--sans);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a{ color: inherit; }
img{ max-width: 100%; }

.blog-shell{
  width: min(var(--shell), calc(100% - 40px));
  margin: 0 auto;
}

.blog-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(17,17,17,.06);
  transition: box-shadow .2s ease;
}

.blog-header.is-scrolled{
  box-shadow: 0 10px 30px rgba(0,0,0,.06);
}

.blog-header__inner{
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.blog-brand{
  display: grid;
  gap: 2px;
  text-decoration: none;
}

.blog-brand__title{
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .06em;
}

.blog-brand__sub{
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.blog-header__nav{
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.blog-header__nav a{
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
}

.blog-header__nav a:hover,
.blog-text-link:hover{
  color: var(--ink);
}

.blog-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: var(--radius-pill);
  padding: 12px 22px;
  font-weight: 600;
  transition: transform .15s ease, opacity .15s ease, background .15s ease;
}

.blog-btn:hover{
  transform: translateY(-1px);
}

.blog-btn--primary{
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow);
}

.blog-btn--ghost{
  border: 1.5px solid rgba(17,17,17,.6);
  color: var(--ink);
  background: transparent;
}

.blog-eyebrow{
  margin: 0 0 14px;
  color: rgba(125,180,195,.95);
  letter-spacing: .24em;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 600;
}

.blog-hero,
.article-hero{
  padding: 72px 0 48px;
}

.blog-hero__grid,
.article-hero__grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .88fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.blog-hero__media--desktop-only{
  display: block;
}

.blog-hero__title,
.article h1,
.blog-section__heading h2,
.article-body h2,
.article-cta h2,
.side-card h2,
.blog-card h3,
.blog-note-box h2{
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: .04em;
  line-height: 1.35;
  text-wrap: balance;
}

.blog-hero__title{
  font-size: clamp(26px, 4vw, 45px);
}

.desktop-break{
  display: inline;
}

.mobile-break{
  display: none;
}

.desktop-title-separator{
  display: inline;
}

.blog-hero__lead,
.blog-section__heading p,
.blog-card p,
.article-lead,
.article-body p,
.article-cta p,
.side-card,
.blog-note-box p,
.blog-footer p{
  color: var(--muted);
  text-wrap: pretty;
}

.blog-hero__lead{
  margin: 20px 0 0;
  max-width: 35em;
  font-size: 17px;
}

.blog-hero__actions{
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.blog-hero__media,
.article-hero__media,
.blog-card__media,
.side-card,
.blog-note-box,
.blog-card,
.article-cta{
  border-radius: 28px;
  overflow: hidden;
}

.blog-hero__media,
.article-hero__media,
.blog-card,
.side-card,
.blog-note-box,
.article-cta{
  background: var(--paper);
  border: 1px solid rgba(17,17,17,.06);
  box-shadow: var(--shadow);
}

.blog-hero__media img,
.article-hero__media img,
.blog-card__media img{
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-hero__media,
.article-hero__media{
  aspect-ratio: 4 / 5;
}

.blog-hero__media img,
.article-hero__media img{
  min-height: 420px;
}

.blog-section,
.related-posts{
  padding: 26px 0 90px;
}

.blog-section__heading{
  text-align: center;
  max-width: 760px;
  margin: 0 auto 38px;
}

.blog-section__heading--left{
  text-align: left;
  margin-left: 0;
}

.blog-section__heading h2{
  font-size: clamp(28px, 4vw, 42px);
}

.blog-section__heading p{
  margin: 16px 0 0;
}

.blog-grid{
  display: grid;
  gap: 24px;
}

.blog-card{
  display: grid;
  grid-template-columns: minmax(280px, .92fr) minmax(0, 1.08fr);
}

.blog-card[hidden]{
  display: none;
}

.blog-card--featured{
  min-height: 340px;
}

.blog-card__body{
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.blog-card__meta{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: rgba(17,17,17,.55);
  font-size: 13px;
}

.blog-card__meta span,
.blog-card__meta time{
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(17,17,17,.06);
  border-radius: 999px;
  padding: 6px 10px;
}

.blog-card h3{
  font-size: clamp(21px, 2.8vw, 30px);
}

.blog-card h3 a,
.blog-text-link{
  text-decoration: none;
}

.blog-card__actions{
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: auto;
}

.blog-pagination{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.blog-pagination[hidden]{
  display: none;
}

.blog-pagination__pages{
  display: flex;
  gap: 8px;
  flex-wrap: nowrap;
  justify-content: center;
  width: 100%;
  overflow: hidden;
}

.blog-pagination__button,
.blog-pagination__page{
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius-pill);
  border: 1.5px solid rgba(17,17,17,.22);
  background: rgba(255,255,255,.78);
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, transform .15s ease;
}

.blog-pagination__button{
  padding: 8px 18px;
}

.blog-pagination__page{
  padding: 8px 14px;
}

.blog-pagination__button:hover:not(:disabled),
.blog-pagination__page:hover{
  transform: translateY(-1px);
  border-color: rgba(17,17,17,.48);
}

.blog-pagination__page.is-active{
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.blog-pagination__button:disabled{
  cursor: not-allowed;
  opacity: .45;
}

.blog-pagination__status{
  width: 100%;
  margin: 2px 0 0;
  color: var(--muted);
  text-align: center;
  font-size: 14px;
}

.blog-note-box{
  margin-top: 28px;
  padding: 28px;
  background: linear-gradient(135deg, rgba(255,255,255,.92), rgba(246,244,239,.95));
}

.article{
  padding-bottom: 84px;
}

.article h1{
  font-size: clamp(29px, 4.6vw, 50px);
}

.article-lead{
  margin: 18px 0 0;
  font-size: 17px;
}

.article-meta{
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 18px;
  color: rgba(17,17,17,.55);
  font-size: 13px;
}

.blog-breadcrumb{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 28px;
  color: rgba(17,17,17,.52);
  font-size: 14px;
}

.blog-breadcrumb a{
  text-decoration: none;
}

.article-layout{
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 36px;
  align-items: start;
}

.article-body section + section{
  margin-top: 44px;
}

.article-body h2{
  font-size: clamp(26px, 3.4vw, 36px);
  margin-bottom: 20px;
}

.article-body p{
  margin: 0 0 18px;
  font-size: 16px;
}

.article-cta{
  margin-top: 56px;
  padding: 34px;
  background: linear-gradient(135deg, rgba(255,255,255,.95), rgba(111,179,201,.12));
}

.article-cta__eyebrow,
.blog-footer__brand{
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: rgba(125,180,195,.95);
}

.article-cta__actions{
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.side-card{
  padding: 24px;
  margin-bottom: 18px;
}

.side-card h2{
  font-size: 22px;
  margin-bottom: 14px;
}

.side-card ul{
  margin: 0;
  padding-left: 1.2em;
  color: var(--muted);
}

.side-card a{
  display: block;
  margin-top: 10px;
}

.blog-grid--compact{
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.blog-grid--compact .blog-card{
  grid-template-columns: 1fr;
}

.blog-footer{
  border-top: 1px solid rgba(17,17,17,.08);
  background: rgba(255,255,255,.72);
}

.blog-footer__inner{
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0 36px;
}

.blog-footer__links{
  display: grid;
  gap: 10px;
  text-align: right;
}

.blog-footer__links a{
  text-decoration: none;
  color: var(--muted);
}

@media (max-width: 980px){
  .article-layout,
  .blog-card,
  .blog-grid--compact{
    grid-template-columns: 1fr;
  }

  .article-side{
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .side-card{
    margin-bottom: 0;
  }
}

@media (max-width: 820px){
  .blog-header{
    position: static;
  }

  .blog-header__inner,
  .blog-footer__inner{
    flex-direction: column;
    align-items: stretch;
  }

  .blog-header__inner{
    min-height: auto;
    padding: 14px 0 16px;
  }

  .blog-header__nav{
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    justify-content: stretch;
  }

  .blog-header__nav a{
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 12px;
    background: rgba(255,255,255,.9);
    border: 1px solid rgba(17,17,17,.08);
    border-radius: 999px;
    text-align: center;
  }

  .blog-header__nav .blog-btn{
    width: 100%;
    min-height: 42px;
    padding: 10px 12px;
  }

  .blog-footer__inner{
    gap: 18px;
  }

  .blog-hero,
  .article-hero{
    padding-top: 34px;
  }

  .blog-hero__grid,
  .article-hero__grid,
  .article-side{
    grid-template-columns: 1fr;
  }

  .blog-hero__media--desktop-only{
    display: none;
  }

  .blog-hero__media img,
  .article-hero__media img{
    min-height: 280px;
  }
}

@media (hover: none) and (pointer: coarse){
  .blog-hero__media--desktop-only{
    display: none !important;
  }
}

@media (max-width: 600px){
  .mobile-break{
    display: none;
  }

  .desktop-title-separator{
    display: inline;
  }

  .blog-shell{
    width: min(var(--shell), calc(100% - 28px));
  }

  .blog-btn{
    width: 100%;
  }

  .blog-hero__title{
    font-size: clamp(21px, 7vw, 24px);
    line-height: 1.45;
  }

  .blog-hero__title br,
  .blog-hero__lead br,
  .blog-section__heading p br,
  .article h1 br{
    display: none;
  }

  .article h1{
    font-size: clamp(24px, 6.2vw, 30px);
    line-height: 1.5;
    letter-spacing: .02em;
  }

  .blog-card h3{
    font-size: clamp(18px, 5.2vw, 20px);
    line-height: 1.45;
  }

  .blog-hero .blog-eyebrow,
  .blog-hero__title,
  .blog-hero__lead{
    text-align: center;
  }

  .blog-hero__lead{
    margin-left: auto;
    margin-right: auto;
  }

  .blog-hero__actions{
    justify-content: center;
  }

  .blog-hero__actions,
  .article-cta__actions,
  .blog-card__actions{
    flex-direction: column;
    align-items: stretch;
  }

  .article-cta__actions .blog-btn{
    font-size: clamp(13px, 3.6vw, 16px);
    padding: 12px 16px;
    white-space: nowrap;
  }

  .blog-pagination{
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 12px;
  }

  .blog-pagination__button{
    width: 80%;
    min-width: 0;
  }

  .blog-pagination__button[data-blog-prev]{
    grid-column: 1;
    grid-row: 1;
    justify-self: start;
  }

  .blog-pagination__button[data-blog-next]{
    grid-column: 2;
    grid-row: 1;
    justify-self: start;
  }

  .blog-pagination__pages,
  .blog-pagination__status{
    grid-column: 1 / -1;
  }

  .blog-pagination__pages{
    grid-row: 2;
  }

  .blog-pagination__status{
    grid-row: 3;
  }

  .blog-card__body,
  .blog-note-box,
  .article-cta,
  .side-card{
    padding: 22px;
  }

  .article-body p{
    font-size: 15px;
  }
}