@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700;800&family=Zen+Old+Mincho:wght@400;500;600;700;900&family=Noto+Sans+JP:wght@300;400;500;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* Unified product (works) detail styles — Leadfive v2 design system (white-based) */
:root {
  --bg: #F4F5FB;
  --bg-tint: #ECEEF8;
  --surface: #FFFFFF;
  --ink: #14162E;
  --ink-2: #3A3D5C;
  --ink-3: #6B6E8C;
  --line: #E7E8F1;
  --blue: #2E55FF;
  --blue-deep: #1B36C9;
  --violet: #6E6BFF;
  --cyan: #06BCD4;
  --mint: #36D9A6;
  --coral: #FF6A5A;
  --grad: linear-gradient(118deg, #2E55FF 0%, #6E6BFF 28%, #06BCD4 64%, #36D9A6 100%);
  --grad-soft: linear-gradient(135deg, rgba(46,85,255,.10), rgba(6,188,212,.08) 55%, rgba(54,217,166,.06));
  --cyan-soft: rgba(6,188,212,.12);
  --gutter: clamp(20px, 5vw, 48px);
  --font-en: 'Sora', sans-serif;
  --font-mincho: 'Zen Old Mincho', 'Noto Serif JP', serif;
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --r-sm: 8px; --r-md: 14px; --r-lg: 22px;
  --ease: cubic-bezier(.22,1,.36,1);
}

html { background: var(--bg) !important; scroll-behavior: smooth; }
body {
  background: var(--bg) !important;
  color: var(--ink) !important;
  font-family: var(--font-jp) !important;
  font-feature-settings: "palt" 1;
  letter-spacing: 0 !important;
  line-height: 1.9;
}
body::before { content: none !important; display: none !important; }
a { color: inherit; }

/* ===== Header ===== */
.site-header {
  background: rgba(255,255,255,.82) !important;
  border-bottom: 1px solid var(--line) !important;
  backdrop-filter: blur(18px) !important; -webkit-backdrop-filter: blur(18px) !important;
}
.navbar { max-width: 1200px !important; padding: 1rem var(--gutter) !important; }
.logo-text {
  font-family: var(--font-en) !important; font-size: 1.35rem !important; font-weight: 700 !important;
  letter-spacing: -.02em !important; color: var(--ink) !important; text-transform: none !important;
}
.logo-text::before { content: none !important; }
.nav-link {
  font-family: var(--font-en) !important; font-size: .82rem !important; font-weight: 600 !important;
  letter-spacing: .04em !important; color: var(--ink-2) !important; text-transform: none !important;
}
.nav-link:hover { color: var(--blue) !important; }
.btn, .btn-primary {
  display: inline-flex !important; align-items: center !important; justify-content: center !important; gap: .5rem;
  min-height: auto !important; padding: .7rem 1.4rem !important;
  border: 1px solid var(--blue) !important; border-radius: 999px !important;
  background: var(--grad) !important; color: #fff !important;
  font-family: var(--font-en) !important; font-weight: 600 !important; font-size: .82rem !important;
  text-decoration: none !important; box-shadow: none !important;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.btn:hover, .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -16px rgba(46,85,255,.5) !important; }

/* ===== Article header ===== */
.article-header, .article-hero {
  position: relative; overflow: hidden;
  padding: 9rem 0 4rem !important;
  background: var(--grad-soft) !important;
  border-bottom: 1px solid var(--line) !important;
}
.article-header::before, .article-hero::before { content: none !important; }
.article-header .container, .article-content .container, .article-hero-inner {
  position: relative; z-index: 1; max-width: 1000px !important; margin: 0 auto; padding: 0 var(--gutter) !important;
}
.article-meta {
  font-family: var(--font-en) !important; font-size: .72rem !important; font-weight: 600 !important;
  letter-spacing: .12em !important; text-transform: uppercase !important;
}
.article-date, .article-eyebrow { color: var(--blue-deep) !important; background: transparent !important; padding: 0 !important; font-family: var(--font-en) !important; }
.article-category { color: var(--cyan) !important; background: var(--cyan-soft) !important; padding: .25rem .85rem !important; border-radius: 999px !important; }
.article-header h1, .article-title {
  max-width: 920px; font-family: var(--font-mincho) !important;
  font-size: clamp(2rem, 4.6vw, 3.4rem) !important; font-weight: 600 !important;
  line-height: 1.3 !important; color: var(--ink) !important; letter-spacing: .01em !important;
}
.article-title .en {
  display: block; margin-bottom: .6rem; font-family: var(--font-en) !important; font-size: .5em; line-height: 1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.article-lead { max-width: 760px; margin-top: 2rem; padding-top: 1.75rem; border-top: 1px solid var(--line); font-size: 1.02rem; line-height: 2; color: var(--ink-2) !important; }

/* ===== Body ===== */
.article-content { padding: 0 !important; background: transparent !important; }
.article-body {
  max-width: 820px !important; margin: 0 auto !important;
  padding: 4rem var(--gutter) 6rem !important;
  color: var(--ink-2) !important; font-size: 1rem; line-height: 2;
}
.article-body p, .article-body li { color: var(--ink-2) !important; }
.article-body p { margin-bottom: 1.5rem; line-height: 2; }
.article-body h2 {
  margin: 3.5rem 0 1.3rem !important; padding: 0 0 0 1rem !important;
  border: 0 !important; border-left: 3px solid var(--blue) !important;
  font-family: var(--font-mincho) !important; font-size: clamp(1.4rem, 2.4vw, 2rem) !important;
  font-weight: 600 !important; line-height: 1.4 !important; color: var(--ink) !important;
}
.article-body h2:first-child { margin-top: 0 !important; }
.article-body h3, .article-body h4 { font-family: var(--font-en) !important; color: var(--blue-deep) !important; }
.article-body strong { color: var(--ink) !important; font-weight: 700; }
.article-body ul { margin: 1.25rem 0 1.75rem; padding-left: 0; list-style: none; }
.article-body li { position: relative; padding: .5rem 0 .5rem 1.6rem; line-height: 1.9; }
.article-body li::before { content: ""; position: absolute; left: 0; top: 1.15rem; width: 10px; height: 2px; border-radius: 2px; background: var(--grad) !important; }

.article-thumbnail { border: 1px solid var(--line) !important; border-radius: var(--r-md) !important; filter: none !important; }

/* ===== Feature / cards ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem !important; margin: 2rem 0 !important; }
.feature-item { text-align: left !important; padding: 1.75rem 1.5rem !important; background: var(--surface) !important; border: 1px solid var(--line) !important; border-radius: var(--r-md) !important; }
.feature-item h4 { font-family: var(--font-en) !important; font-size: 1rem !important; color: var(--blue-deep) !important; margin-bottom: .5rem !important; }
.feature-item p { font-size: .9rem !important; color: var(--ink-3) !important; margin-bottom: 0 !important; }
.feature-box, .contact-info {
  background: var(--surface) !important; border: 1px solid var(--line) !important; border-radius: var(--r-md) !important; padding: 2rem !important;
}
.feature-box h4 { font-family: var(--font-mincho) !important; font-size: 1.1rem !important; font-weight: 600 !important; color: var(--ink) !important; margin-bottom: 1rem !important; }
.contact-info { background: var(--bg-tint) !important; margin-top: 3rem !important; }
.contact-info p { color: var(--ink-2) !important; }
.contact-info strong { color: var(--ink) !important; }

.service-link {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--grad) !important; color: #fff !important;
  padding: .9rem 1.8rem !important; border-radius: 999px !important;
  text-decoration: none; font-family: var(--font-en) !important; font-weight: 600 !important; font-size: .9rem;
  margin: .5rem .75rem .5rem 0 !important; box-shadow: none !important;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.service-link.secondary { background: var(--ink) !important; }
.service-link:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -16px rgba(46,85,255,.5) !important; }

.spec-table { width: 100%; border-collapse: collapse; margin: 2rem 0; font-size: .94rem; }
.spec-table th, .spec-table td { text-align: left; padding: 1rem 1.25rem; border-bottom: 1px solid var(--line) !important; }
.spec-table th { width: 30%; font-family: var(--font-en); font-size: .72rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3) !important; }
.spec-table td { color: var(--ink) !important; }

.cta-block { margin-top: 4rem; padding: 3rem; border: 1px solid var(--line) !important; border-radius: var(--r-lg) !important; background: var(--grad-soft) !important; text-align: center; }
.cta-block p { color: var(--ink-2) !important; margin-bottom: 1.5rem; }

.back-link {
  color: var(--blue) !important; border: none !important; padding: 0 !important; margin-top: 3rem !important;
  font-family: var(--font-en) !important; font-size: .8rem !important; font-weight: 600 !important;
  letter-spacing: .04em !important; text-transform: none !important; text-decoration: none;
}
.back-link:hover { color: var(--blue-deep) !important; border: none !important; }

/* ===== Footer ===== */
.footer-section, .footer {
  background: var(--ink) !important; color: rgba(255,255,255,.86) !important;
  border-top: none !important; font-family: var(--font-jp) !important;
}
.footer-brand h3 { font-family: var(--font-en) !important; color: #fff !important; }
.footer-brand p { color: rgba(255,255,255,.6) !important; }
.footer-links h4 { font-family: var(--font-en) !important; color: rgba(255,255,255,.5) !important; text-transform: uppercase; }
.footer-links a { color: rgba(255,255,255,.72) !important; }
.footer-links a:hover { color: #fff !important; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12) !important; color: rgba(255,255,255,.4) !important; font-family: var(--font-mono) !important; }

:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }
@media (max-width: 768px) {
  .navbar { padding: 1rem 1.25rem !important; flex-wrap: wrap; justify-content: center; gap: .5rem 1rem; }
  .navbar-nav { display: flex !important; flex-wrap: wrap; justify-content: center; gap: 1rem; font-size: .82rem; }
  .navbar-nav .btn, .navbar-nav .btn-primary { padding: .5rem 1.1rem !important; font-size: .8rem !important; }
  .article-header, .article-hero { padding: 7rem 0 3rem !important; }
  .article-header h1, .article-title { font-size: clamp(1.6rem, 8vw, 2.4rem) !important; }
  .article-body { padding: 3rem 1.25rem 4rem !important; }
  .feature-grid { grid-template-columns: 1fr; }
}