:root {
  --paper: #fafafa;
  --ink: #111113;
  --muted: #65656c;
  --line: #dcdce0;
  --grid: #ededf0;
  --accent: #234cff;
  --sans: "Helvetica Neue", Helvetica, Arial, "Hiragino Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --gutter: clamp(24px, 4.5vw, 80px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.5 var(--sans); -webkit-font-smoothing: antialiased; }
p, h1, h2, blockquote { margin: 0; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
::selection { background: #dbe2ff; }
.skip-link { position: fixed; top: 12px; left: var(--gutter); z-index: 5; padding: 12px 18px; color: white; background: var(--ink); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { min-height: 92px; margin: 0 var(--gutter); display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.wordmark { display: inline-flex; align-items: center; min-height: 44px; font-size: 23px; font-weight: 700; letter-spacing: -.06em; white-space: nowrap; }
.wordmark-dot { color: var(--accent); }
.header-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; }
.header-nav a { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }
.header-nav > a { transition: color .2s; }
.header-nav > a:hover, .header-nav > a[aria-current="page"] { color: var(--accent); }
.nav-divider { width: 1px; height: 14px; background: var(--line); }
.languages { display: flex; gap: 12px; }
.languages a { min-width: 32px; color: var(--muted); position: relative; }
.languages a:hover { color: var(--accent); }
.languages a[aria-current="page"] { color: var(--ink); }
.languages a[aria-current="page"]::after { content: ""; position: absolute; bottom: 6px; left: 50%; width: 14px; height: 2px; background: var(--accent); transform: translateX(-50%); }
.home-page { min-height: 100svh; display: flex; flex-direction: column; }
.home-main { flex: 1; display: flex; }
.hero { position: relative; isolation: isolate; width: 100%; min-height: 610px; padding: clamp(40px, 6vh, 80px) var(--gutter) clamp(48px, 7vh, 92px); display: flex; align-items: center; }
.hero-grid { position: absolute; inset: 0 var(--gutter); pointer-events: none; z-index: -1; border-left: 1px solid var(--grid); border-right: 1px solid var(--grid); background-image: linear-gradient(to right, transparent calc(50% - .5px), var(--grid) calc(50% - .5px), var(--grid) calc(50% + .5px), transparent calc(50% + .5px)); }
.hero-grid::before, .hero-grid::after { content: "+"; position: absolute; color: #7c7c84; font: 18px/1 var(--sans); }
.hero-grid::before { left: -5px; top: -9px; }
.hero-grid::after { right: -5px; bottom: -9px; }
.hero-content { position: relative; width: 100%; }
.hero h1 { font-size: clamp(112px, 22.8vw, 370px); line-height: .86; font-weight: 600; letter-spacing: -.075em; margin-left: -.012em; user-select: text; }
.brand-line { display: block; width: fit-content; }
.brand-line:first-child { margin-bottom: .025em; animation: brand-enter .75s cubic-bezier(.16, 1, .3, 1) both; }
.brand-line:last-child { animation: brand-enter .75s .08s cubic-bezier(.16, 1, .3, 1) both; }
.brand-cursor { display: inline-block; width: .15em; height: .15em; background: var(--accent); margin-left: .1em; }
.hero-copy { position: absolute; left: 57%; bottom: 1.1%; right: 0; max-width: 440px; animation: copy-enter .8s .18s ease both; }
.brand-local { font-size: 16px; font-weight: 600; letter-spacing: .12em; margin-bottom: 16px; }
.tagline { font-size: clamp(21px, 2vw, 30px); line-height: 1.5; letter-spacing: -.035em; font-weight: 400; }
.translation { margin-top: 7px; color: var(--muted); font-size: 16px; line-height: 1.7; }
.hero-actions { display: flex; align-items: center; gap: clamp(22px, 2.2vw, 34px); flex-wrap: wrap; margin-top: 30px; }
.contact-button { display: inline-flex; align-items: center; justify-content: space-between; gap: 27px; min-height: 48px; padding: 12px 18px; background: var(--ink); color: white; font-size: 14px; transition: background .2s; }
.contact-button:hover { background: var(--accent); }
.text-link { display: inline-flex; align-items: center; gap: 16px; min-height: 44px; font-size: 14px; transition: color .2s; }
.text-link:hover { color: var(--accent); }
.arrow { display: inline-block; transition: transform .2s ease; }
.contact-button:hover .arrow { transform: translate(2px, -2px); }
.text-link:hover .arrow { transform: translateX(3px); }
.site-footer { min-height: 88px; margin: 0 var(--gutter); border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 24px; color: var(--muted); font-size: 13px; }
.footer-brand { font-size: 12px; letter-spacing: .06em; }
.site-footer a { min-height: 44px; display: inline-flex; align-items: center; gap: 15px; transition: color .2s; }
.site-footer a:hover { color: var(--accent); }
.contact-link { font-size: 14px; }
.article-page { min-height: 100svh; display: flex; flex-direction: column; }
.article-main { width: 100%; max-width: 1020px; margin: 0 auto; padding: 64px var(--gutter) 100px; flex: 1; }
.article-main h1 { font-size: clamp(36px, 5vw, 64px); line-height: 1.18; letter-spacing: -.055em; font-weight: 500; margin: 40px 0 60px; }
.article-main h2 { font-size: 14px; font-weight: 600; letter-spacing: .05em; line-height: 1.6; margin: 36px 0 16px; }
.article-main p { font-size: 17px; line-height: 1.95; max-width: 710px; }
.article-main p + p { margin-top: 20px; }
.article-main p a { text-decoration: underline; text-underline-offset: 4px; overflow-wrap: anywhere; }
.back-link { color: var(--muted); }
@keyframes brand-enter { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes copy-enter { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@media (min-width: 1700px) { .hero-content { max-width: 1520px; margin: 0 auto; } }
@media (max-width: 1050px) {
  .hero { min-height: 540px; }
  .hero-copy { left: 56%; max-width: none; bottom: 0; }
  .brand-local { font-size: 14px; margin-bottom: 9px; }
  .tagline { font-size: 22px; }
  .translation { font-size: 14px; }
  .hero-actions { gap: 18px; margin-top: 20px; }
  .contact-button { gap: 18px; padding: 10px 14px; }
  .locale-ja .hero-copy .tagline { font-size: 19px; }
}
@media (max-width: 960px) {
  .site-header { min-height: 78px; gap: 16px; }
  .wordmark { font-size: 20px; }
  .header-nav { gap: 12px; }
  .header-nav > a, .nav-divider { display: none; }
  .languages { gap: 5px; }
  .hero { min-height: 0; padding-top: clamp(46px, 8vw, 72px); padding-bottom: 48px; }
  .hero h1 { font-size: 24vw; line-height: .9; letter-spacing: -.075em; }
  .hero-copy { position: static; margin: 42px 0 0; max-width: 100%; }
  .brand-local { margin-bottom: 12px; }
  .tagline, .locale-ja .hero-copy .tagline { font-size: 23px; }
  .translation { font-size: 15px; }
  .hero-actions { margin-top: 25px; gap: 26px; }
  .contact-button { min-height: 48px; padding: 12px 17px; gap: 24px; }
  .site-footer { flex-wrap: wrap; gap: 4px 20px; padding: 18px 0 22px; }
  .footer-brand { width: 100%; }
  .site-footer > a:last-child { margin-left: auto; }
  .hero-grid { background-image: none; }
  .article-main { padding-top: 30px; padding-bottom: 64px; }
  .article-main h1 { margin: 32px 0 40px; }
  .article-main p { font-size: 16px; }
}
@media (max-width: 360px) {
  .wordmark { font-size: 18px; }
  .languages { gap: 2px; }
  .languages a { min-width: 29px; }
  .tagline, .locale-ja .hero-copy .tagline { font-size: 20px; }
  .hero-actions { gap: 18px; }
  .contact-button { padding: 12px 14px; gap: 17px; }
  .site-footer { gap: 4px 12px; font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}