:root {
  --copy-yellow: #e8ed22;
  --copy-ink: #182d35;
  --copy-paper: #fffdf8;
  --copy-soft: #d9f0f7;
  --copy-orange: #e56b37;
  --copy-muted: #60777d;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--copy-ink);
  background: var(--copy-paper);
  font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif;
  line-height: 1.85;
}
a { color: inherit; }

.copy-nav {
  position: fixed;
  z-index: 40;
  top: 0;
  left: 50%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100%, 1180px);
  height: 74px;
  padding: 0 18px;
  transform: translateX(-50%);
  background: rgba(20,26,28,.34);
  border-bottom: 1px solid rgba(255,255,255,.18);
  box-shadow: 0 8px 24px rgba(20,26,28,.1);
  backdrop-filter: blur(10px);
}
.copy-logo { display: inline-flex; align-items: center; gap: 11px; min-width: 220px; color: #fff; font-weight: 900; letter-spacing: .04em; text-decoration: none; text-shadow: 0 2px 10px rgba(20,26,28,.58); }
.copy-logo-mark { display: block; width: 38px; height: 38px; object-fit: contain; flex: 0 0 auto; }
.copy-logo-text { display: flex; flex-direction: column; gap: 2px; line-height: 1.05; white-space: nowrap; }
.copy-logo-text span { font-size: 13px; font-weight: 700; letter-spacing: .04em; }
.copy-logo-text strong { font-size: 20px; font-weight: 900; letter-spacing: .08em; }
.copy-menu { display: flex; align-items: center; justify-content: center; gap: 0; color: #fff; font-size: 15px; font-weight: 800; text-shadow: 0 2px 10px rgba(20,26,28,.58); }
.copy-menu a { position: relative; display: inline-flex; align-items: center; min-height: 28px; padding: 0 18px; text-decoration: none; }
.copy-menu a + a::before { content: ""; position: absolute; top: 5px; bottom: 5px; left: 0; width: 1px; background: rgba(255,255,255,.72); }
.copy-nav-actions { display: inline-flex; align-items: center; gap: 10px; }
.copy-nav-contact { display: inline-flex; align-items: center; justify-content: center; min-height: 40px; padding: 0 17px; color: #171900; border: 1px solid rgba(232,237,34,.78); border-radius: 999px; background: var(--copy-yellow); box-shadow: 0 8px 18px rgba(95,101,0,.18); font-size: 13px; font-weight: 900; text-decoration: none; }
.copy-menu-toggle { display: none; width: 36px; height: 36px; padding: 0; color: #fff; border: 1px solid rgba(255,255,255,.62); border-radius: 50%; background: rgba(20,26,28,.25); }
.copy-menu-toggle svg { width: 19px; height: 19px; }

.article-hero {
  position: relative;
  display: grid;
  min-height: 270px;
  place-items: center;
  padding: 94px 22px 42px;
  overflow: hidden;
  color: #fff;
  text-align: center;
  background: linear-gradient(rgba(18,22,24,.66), rgba(18,22,24,.66)), var(--article-hero-image) center / cover;
}
.article-hero h1 { position: relative; z-index: 1; width: fit-content; max-width: min(88vw, 640px); margin: 0; padding: 0 18px 12px; font-size: clamp(26px, 4vw, 42px); font-weight: 900; line-height: 1.25; letter-spacing: .02em; }
.article-hero h1::before { content: "COLUMN"; position: absolute; z-index: -1; top: 58%; left: 50%; width: max-content; color: rgba(255,255,255,.17); font-family: "Barlow Condensed", Arial, sans-serif; font-size: clamp(30px, 5vw, 62px); font-weight: 600; letter-spacing: .18em; line-height: 1; white-space: nowrap; transform: translate(-50%,-50%); pointer-events: none; }

.article-main { width: min(100% - 32px, 840px); margin: 0 auto; padding: 58px 0 100px; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin: 0 0 24px; color: var(--copy-muted); font-size: .82rem; font-weight: 800; }
.article-category { display: inline-block; padding: 6px 12px; color: #16709a; border: 1px solid rgba(22,112,154,.28); background: #fff; font-size: .78rem; line-height: 1.2; }
.article-title { margin: 0 0 30px; font-size: clamp(1.8rem, 4vw, 3rem); line-height: 1.4; letter-spacing: -.05em; }
.article-eyecatch { width: 100%; max-height: 430px; object-fit: cover; margin: 0 0 54px; border: 1px solid rgba(24,45,53,.14); }
.article-body { font-size: 1rem; line-height: 2; }
.article-body p { margin: 0 0 1.65em; }
.article-body strong { color: var(--copy-ink); font-weight: 900; }
.article-body h2 { position: relative; margin: 3.2em 0 1.15em; padding: 0 0 .45em; border-bottom: 2px solid rgba(24,45,53,.22); font-size: clamp(1.35rem, 3vw, 2rem); line-height: 1.5; }
.article-body h2::after { content: ""; position: absolute; right: 0; bottom: -2px; left: 0; width: 5.5em; height: 4px; background: var(--copy-yellow); }
.article-body h3 { margin: 2.4em 0 .8em; padding-left: 14px; border-left: 4px solid var(--copy-orange); font-size: clamp(1.08rem, 2vw, 1.35rem); line-height: 1.55; }
.article-marker { background: linear-gradient(transparent 62%, rgba(232,237,34,.68) 62%, rgba(232,237,34,.68) 91%, transparent 91%); box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.article-points { margin: 1.4em 0 2em; padding: 0; list-style: none; border-top: 1px solid rgba(24,45,53,.18); }
.article-points li { position: relative; margin: 0; padding: 1.05em 0 1.05em 2.8em; border-bottom: 1px solid rgba(24,45,53,.14); }
.article-points li::before { content: counter(article-point); counter-increment: article-point; position: absolute; top: 1.1em; left: 0; display: grid; place-items: center; width: 1.7em; height: 1.7em; color: var(--copy-ink); border: 1px solid rgba(24,45,53,.3); font-size: .8em; font-weight: 900; line-height: 1; }
.article-points { counter-reset: article-point; }
.article-table { width: 100%; margin: 1.4em 0 2em; border-collapse: collapse; border-top: 1px solid rgba(24,45,53,.18); font-size: .94rem; }
.article-table th, .article-table td { padding: 1em 1.1em; border-bottom: 1px solid rgba(24,45,53,.14); vertical-align: top; text-align: left; }
.article-table th { width: 34%; color: var(--copy-ink); background: rgba(217,240,247,.5); font-weight: 900; }
.article-table td { background: #fff; }
.article-point-section + .article-point-section { margin-top: 2.2em; padding-top: 1.8em; border-top: 1px solid rgba(24,45,53,.14); }
.article-point-section h3 { margin-top: 0; }
.article-point-section p { margin-bottom: 0; }
.article-closing-intro { margin-top: 1.65em !important; }
.article-note { margin: 2em 0; padding: 1.05em 0; border-top: 3px solid var(--copy-yellow); border-bottom: 1px solid rgba(24,45,53,.18); background: transparent; }
.article-note p:last-child { margin-bottom: 0; }
.article-author { display: block; margin-top: 68px; padding: 24px; border: 1px solid rgba(24,45,53,.16); border-radius: 0; background: #fff; box-shadow: none; }
.article-author-label { margin: 0 0 4px; color: var(--copy-orange); font-size: .76rem; font-weight: 900; }
.article-author h2 { margin: 0 0 8px; border: 0; font-size: 1.1rem; }
.article-author h2::after { display: none; }
.article-author p { margin: 0; color: #4c666d; font-size: .85rem; line-height: 1.8; }
.article-author a { color: #1d6b85; font-weight: 900; text-decoration: underline; text-underline-offset: 3px; }

.copy-cta { position: relative; z-index: 3; isolation: isolate; overflow: hidden; margin-top: 72px; min-height: 0; padding: 0; color: var(--copy-ink); background: transparent; text-align: left; }
.copy-cta-layout { position: relative; display: flex; align-items: center; justify-content: center; min-height: 500px; padding: 56px 24px; }
.copy-cta-image { position: absolute; z-index: 0; inset: 0; width: 100%; overflow: hidden; background: #bfe9f8; }
.copy-cta-image::after { content: ""; position: absolute; z-index: 1; inset: 0; background: linear-gradient(90deg, rgba(255,255,255,.62), rgba(255,255,255,.3) 50%, rgba(255,255,255,.5)), rgba(255,255,255,.18); }
.copy-cta-image img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.copy-cta-panel { position: relative; z-index: 2; width: min(100%, 720px); max-width: 720px; margin: 0; padding: 42px 48px 44px; border: 0; border-radius: 0; background: rgba(255,255,255,.78); box-shadow: none; text-align: center; }
.copy-cta-panel > * { max-width: 640px; margin-right: auto; margin-left: auto; }
.copy-cta-kicker { display: block; min-height: 0; margin: 0 auto 18px; padding: 0; color: #607279; font-size: 15px; font-weight: 800; letter-spacing: .04em; }
.copy-cta h2 { position: relative; z-index: 0; display: inline-block; margin: 0 0 12px; padding: 0 .06em .08em; color: var(--copy-ink); font-size: clamp(24px, 3.2vw, 38px); font-weight: 900; line-height: 1.2; letter-spacing: -.04em; }
.copy-cta h2::after { content: ""; position: absolute; z-index: -1; right: -.04em; bottom: .08em; left: -.04em; height: .36em; background: rgba(232,237,34,.68); transform: rotate(-1.5deg); }
.copy-cta-lead { margin: 0 auto 28px; color: #3f4a4f; font-size: 14px; font-weight: 700; line-height: 1.8; }
.copy-cta-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; max-width: none; margin: 0; }
.copy-cta-contact, .copy-cta-actions .copy-button { display: inline-flex; align-items: center; justify-content: center; width: 100%; gap: 10px; min-height: 48px; padding: 0 22px; border: 1px solid rgba(20,26,28,.18); border-radius: 14px; font-size: 13px; font-weight: 900; text-decoration: none; }
.copy-cta-contact svg, .copy-cta-actions svg { width: 18px; height: 18px; flex: 0 0 auto; }
.copy-button--line { color: #fff; background: #06c755; box-shadow: 0 18px 36px rgba(6,199,85,.24); }
.copy-button--instagram { color: #fff; background: linear-gradient(45deg, #f09433, #e6683c 26%, #dc2743 52%, #cc2366 76%, #bc1888); box-shadow: 0 18px 36px rgba(220,39,67,.22); }
.copy-cta-contact--phone { grid-column: 1 / -1; order: 3; background: rgba(255,255,255,.82); }

.related-articles { margin-top: 68px; padding-top: 34px; border-top: 1px solid rgba(24,45,53,.18); }
.related-articles h2 { margin: 0 0 22px; font-size: 1.35rem; }
.related-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.related-card { display: flex; flex-direction: column; min-width: 0; color: var(--copy-ink); border: 1px solid rgba(24,45,53,.16); border-radius: 0; background: #fff; text-decoration: none; transition: border-color .2s ease, transform .2s ease; }
.related-card:hover, .related-card:focus-visible { border-color: var(--copy-yellow); outline: none; transform: translateY(-2px); }
.related-card img { width: 100%; height: 130px; object-fit: cover; }
.related-card-body { padding: 14px 16px 16px; }
.related-card-label { margin: 0 0 4px; color: #16709a; font-size: .72rem; font-weight: 900; }
.related-card h3 { margin: 0; font-size: .95rem; line-height: 1.55; }

.article-links { display: flex; justify-content: space-between; gap: 16px; margin-top: 38px; }
.article-links a { color: var(--copy-ink); font-size: .88rem; font-weight: 900; text-decoration: none; }
.article-back-link { display: flex; align-items: center; justify-content: center; width: fit-content; min-width: 190px; margin: 38px auto 0; padding: 12px 22px; color: var(--copy-ink); border: 1px solid rgba(24,45,53,.24); background: #fff; font-size: .88rem; font-weight: 900; text-decoration: none; transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.article-back-link:hover, .article-back-link:focus-visible { border-color: var(--copy-yellow); background: #fffef0; outline: none; transform: translateY(-2px); }
.article-links a:hover { color: var(--copy-orange); }

.copy-container { width: min(100% - 32px, 1080px); margin: 0 auto; }
.copy-footer { position: relative; overflow: hidden; padding: 64px 0 28px; color: rgba(255,255,255,.78); background: radial-gradient(circle at 12% 8%, rgba(232,237,34,.16), transparent 28%), radial-gradient(circle at 88% 18%, rgba(113,216,238,.14), transparent 30%), linear-gradient(135deg, #151a1c 0%, #263237 58%, #384238 100%); }
.copy-footer::before { content: ""; position: absolute; right: -8%; bottom: -62%; width: 52%; height: 100%; border: 1px solid rgba(232,237,34,.18); border-radius: 50%; transform: rotate(-12deg); pointer-events: none; }
.copy-footer-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 2fr repeat(4, minmax(0, 1fr)); gap: 30px; align-items: start; }
.copy-footer p, .copy-footer a { display: block; margin: 0 0 9px; font-size: 14px; font-weight: 700; }
.copy-footer p { max-width: 280px; color: rgba(255,255,255,.64); line-height: 1.8; }
.copy-footer .copy-logo { margin-bottom: 12px; color: #fff; }
.copy-footer .copy-logo-mark { width: 42px; height: 42px; }
.copy-footer a { color: rgba(255,255,255,.82); transition: color .2s ease, transform .2s ease; }
.copy-footer a:hover { color: var(--copy-yellow); transform: translateX(3px); }
.copy-footer-label { display: block; margin-bottom: 12px; color: rgba(232,237,34,.82); font-family: Arial, sans-serif; font-size: 13px; font-weight: 600; letter-spacing: .16em; line-height: 1; }
.copy-copyright { position: relative; z-index: 1; margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.16); text-align: center; font-size: 10px; color: rgba(255,255,255,.48); }

@media (max-width: 760px) {
  .copy-nav { height: 64px; padding: 0 8px; background: rgba(20,26,28,.62); }
  .copy-logo { min-width: 132px; gap: 7px; }
  .copy-logo-mark { width: 30px; height: 30px; }
  .copy-logo-text { gap: 1px; }
  .copy-logo-text span { font-size: 8px; }
  .copy-logo-text strong { font-size: 13px; }
  .copy-menu { position: absolute; top: 64px; right: 8px; left: 8px; display: none; flex-direction: column; align-items: stretch; padding: 8px; background: rgba(20,26,28,.94); font-size: 14px; text-shadow: none; }
  .copy-nav.is-menu-open .copy-menu { display: flex; }
  .copy-menu a { display: flex; align-items: center; min-height: 46px; padding: 0 14px; }
  .copy-menu a + a::before { top: 0; right: 0; bottom: auto; left: 0; width: auto; height: 1px; background: rgba(255,255,255,.18); }
  .copy-menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .copy-nav-contact { min-height: 36px; padding: 0 12px; font-size: 12px; }
  .article-hero { min-height: 190px; padding: 74px 22px 24px; }
  .article-hero h1 { font-size: 28px; padding: 0 10px 11px; }
  .article-hero h1::before { top: 58%; font-size: 36px; letter-spacing: .1em; }
  .article-main { width: min(100% - 28px, 840px); padding: 42px 0 72px; }
  .article-links { gap: 8px; }
  .article-links a { flex: 0 1 auto; white-space: nowrap; font-size: .8rem; }
  .article-title { font-size: 1.75rem; }
  .article-eyecatch { max-height: 280px; margin-bottom: 38px; }
  .article-body { font-size: .94rem; line-height: 1.9; }
  .article-body h2 { font-size: 1.35rem; }
  .article-points li { padding-left: 2.45em; }
  .article-table { table-layout: fixed; font-size: .76rem; line-height: 1.65; }
  .article-table th, .article-table td { display: table-cell; width: auto; padding: .75em .55em; overflow-wrap: anywhere; }
  .article-table th { width: 38%; border-bottom: 1px solid rgba(24,45,53,.14); }
  .article-author { margin-top: 52px; padding: 20px 16px; }
  .article-author p { font-size: .78rem; }
  .copy-cta { margin-top: 54px; }
  .copy-cta-layout { display: flex; min-height: 500px; padding: 34px 16px; }
  .copy-cta-image { position: absolute; inset: 0; width: 100%; height: auto; }
  .copy-cta-panel { width: 100%; max-width: none; padding: 30px 20px 28px; }
  .copy-cta-actions { grid-template-columns: 1fr; }
  .copy-cta-contact { grid-column: auto; }
  .related-articles { margin-top: 52px; }
  .related-grid { grid-template-columns: 1fr; }
  .related-card img { height: 150px; }
  .article-links { flex-direction: column; gap: 12px; }
  .copy-footer { padding: 48px 0 22px; }
  .copy-footer-grid { grid-template-columns: 1fr; gap: 18px; }
}