/* Blue + white identity. Native CSS. Explicit light theme follows the brand brief.
   DESIGN_VARIANCE: 4 / MOTION_INTENSITY: 3 / VISUAL_DENSITY: 3.
   Radius system: buttons are pills; large surfaces use 24px.
   Layers: header 10, mobile navigation 20, skip link 30. */
:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  color: #202b3c;
  background: #fff;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  --bg: #fff;
  --surface: #f7f9fc;
  --panel: #eef5ff;
  --text: #202b3c;
  --muted: #626e80;
  --accent: #246bdb;
  --accent-hover: #1857bd;
  --button-text: #fff;
  --line: #e7ebf2;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; height: auto; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
::selection { background: #dceaff; color: #16438a; }
.container { width: min(1120px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: fixed; top: 12px; left: 12px; padding: 12px 18px; color: #fff; background: var(--accent); z-index: 30; transform: translateY(-180%); border-radius: 6px; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: relative; z-index: 10; border-bottom: 1px solid var(--line); background: var(--bg); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 80px; gap: 30px; }
.brand { display: flex; align-items: center; gap: 11px; margin-right: auto; }
.brand img { width: 40px; height: 40px; object-fit: contain; }
.brand-wordmark { font-size: 20px; font-weight: 600; line-height: 1.25; letter-spacing: .045em; }
.brand-en { display: block; margin-top: 4px; font-size: 9px; letter-spacing: .2em; font-weight: 500; color: var(--muted); }
html[lang="en"] .brand-wordmark { font-size: 20px; letter-spacing: -.02em; }
html[lang="en"] .brand-en { font-size: 8px; letter-spacing: .12em; }
.site-nav { display: flex; gap: 34px; align-items: center; font-size: 14px; color: #526074; }
.site-nav > a, .language-switch { transition: color .2s, background .2s; }
.site-nav > a:hover, .language-switch:hover { color: var(--accent); }
.site-nav .nav-contact { display: flex; align-items: center; gap: 20px; padding: 11px 19px; border-radius: 999px; background: var(--panel); color: var(--accent); }
.site-nav .nav-contact:hover { background: #e0edff; }
.language-switch { display: inline-flex; align-items: center; justify-content: center; min-width: 34px; min-height: 44px; font-size: 12px; color: var(--muted); }
.menu-toggle { display: none; }
.hero { display: grid; grid-template-columns: 1.12fr 1fr; align-items: center; min-height: 610px; gap: 10px; padding-block: 76px 84px; }
.hero-copy { position: relative; z-index: 1; }
.company-label { font-size: 12px; letter-spacing: .025em; color: var(--muted); margin: 0 0 25px; }
h1 { font-size: clamp(36px, 4.6vw, 60px); line-height: 1.37; letter-spacing: -.05em; font-weight: 600; margin: 0; white-space: nowrap; }
.hero-emphasis { color: var(--accent); }
.hero-description { color: var(--muted); font-size: 16px; line-height: 1.9; margin: 24px 0 31px; }
.button { display: inline-flex; gap: 24px; align-items: center; justify-content: center; min-height: 48px; padding: 13px 24px; font-size: 14px; font-weight: 500; border-radius: 999px; white-space: nowrap; transition: background .2s, transform .2s; }
.button-primary { background: var(--accent); color: var(--button-text); }
.button-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.button:active, .nav-contact:active { transform: scale(.98); }
.hero-visual { width: 112%; margin-left: -3%; }
.hero-visual img { width: 100%; aspect-ratio: 1.3; object-fit: contain; }
.section { padding-block: 80px; }
.section-heading { margin-bottom: 42px; }
h2 { font-size: 34px; font-weight: 550; line-height: 1.45; letter-spacing: -.035em; margin: 0; text-wrap: balance; }
.section-heading > p { font-size: 15px; color: var(--muted); margin: 14px 0 0; line-height: 1.8; }
.services { padding-top: 64px; padding-bottom: 84px; border-top: 1px solid var(--line); }
.service-list { display: grid; grid-template-columns: 1fr; border-top: 1px solid var(--line); }
.service-row { display: grid; grid-template-columns: 1fr 1.65fr; gap: 75px; align-items: center; padding-block: 31px; border-bottom: 1px solid var(--line); }
.service-name h3 { font-size: 21px; font-weight: 500; line-height: 1.5; margin: 0; }
.service-row > p { color: var(--muted); font-size: 14px; line-height: 1.85; margin: 0; max-width: 590px; }
.about { background: var(--surface); padding-block: 80px; }
.about-grid { display: grid; grid-template-columns: .85fr 1fr; gap: 100px; align-items: center; }
.about-visual { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 350px; background: var(--bg); border-radius: 24px; }
.about-visual img { width: 150px; height: 150px; object-fit: contain; }
.about-visual > span { font-size: 38px; font-weight: 600; letter-spacing: -.02em; color: #24344c; margin-top: 20px; }
.eyebrow { font-size: 13px; color: var(--accent); margin: 0 0 18px; }
.about-copy h2 { margin-bottom: 25px; }
.about-copy > p:not(.eyebrow) { color: var(--muted); font-size: 14px; line-height: 1.95; margin: 0 0 17px; }
.about-signature { display: flex; gap: 12px; align-items: center; font-size: 12px; color: var(--accent); margin-top: 28px; }
.signature-line { display: block; width: 26px; height: 1px; background: var(--accent); }
.principles { padding-block: 82px 90px; }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 50px; }
.principle-grid article { padding-top: 3px; }
.principle-grid h3 { font-size: 18px; font-weight: 550; line-height: 1.5; margin: 0; }
.principle-grid p { font-size: 14px; color: var(--muted); line-height: 1.95; margin: 14px 0 0; max-width: 290px; }
.contact { padding-bottom: 72px; }
.contact-panel { background: var(--panel); border-radius: 24px; padding: 58px 64px; display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.contact-copy h2 { font-size: 36px; line-height: 1.45; }
.contact-copy > p:last-child { font-size: 14px; color: var(--muted); line-height: 1.8; margin: 19px 0 0; }
.contact-label { color: var(--muted); font-size: 12px; }
.email-link { display: flex; align-items: center; justify-content: space-between; gap: 14px; font-size: clamp(22px, 2.5vw, 30px); font-weight: 500; letter-spacing: -.035em; padding-block: 14px 20px; border-bottom: 1px solid #cbdcf7; color: var(--accent); white-space: nowrap; }
.email-link:hover { text-decoration: underline; text-underline-offset: 7px; }
.email-link span { font-size: 25px; }
.contact-company { margin-top: 25px; font-size: 12px; color: var(--muted); line-height: 1.8; }
.contact-company p { margin: 4px 0; }
.site-footer { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--line); padding-block: 30px; gap: 28px; color: var(--muted); font-size: 11px; line-height: 1.8; }
.footer-company { display: flex; flex-direction: column; gap: 5px; }
.footer-name { color: var(--text); font-size: 12px; }
.footer-links { display: flex; gap: 30px; }
.footer-links a:hover { color: var(--accent); }
.privacy-page { max-width: 780px; padding-block: 70px 90px; min-height: 65dvh; }
.privacy-page h1 { font-size: 38px; white-space: normal; }
.privacy-date { color: var(--muted); font-size: 13px; margin: 16px 0 44px; }
.privacy-page h2 { font-size: 21px; margin: 32px 0 12px; }
.privacy-page p { font-size: 15px; line-height: 2; color: var(--muted); }
.privacy-page p a { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }
html[lang="en"] h1 { font-size: clamp(34px, 4.25vw, 55px); line-height: 1.25; }
html[lang="en"] .hero-description { max-width: 395px; }
html[lang="en"] .company-label { font-size: 11px; }
html[lang="en"] .service-name h3 { font-size: 20px; }
html[lang="en"] .about-copy h2 { font-size: 35px; line-height: 1.25; }
@media (max-width: 1023px) {
  .container { width: calc(100% - 64px); }
  .header-inner { height: 78px; gap: 22px; }
  .site-nav { gap: 24px; }
  .hero { min-height: 530px; padding-block: 56px; }
  h1 { font-size: clamp(32px, 4.3vw, 46px); }
  .hero-description { font-size: 14px; }
  .service-row { gap: 36px; grid-template-columns: 1fr 1.4fr; }
  .service-name h3 { font-size: 19px; }
  .about-grid { gap: 40px; }
  .about-visual { min-height: 320px; }
  .about-copy h2 { font-size: 29px; }
  .contact-panel { padding: 44px 36px; gap: 38px; }
}
@media (max-width: 767px) {
  html { scroll-padding-top: 24px; }
  .container { width: calc(100% - 40px); }
  .header-inner { height: 76px; gap: 12px; }
  .language-switch { order: 3; }
  .privacy-header .button { font-size: 12px; gap: 8px; padding: 8px; }
  .privacy-header .brand-wordmark { display: none; }
  .brand img { width: 34px; height: 34px; }
  .brand-wordmark { font-size: 18px; }
  html[lang="en"] .brand-wordmark { font-size: 18px; }
  .brand-en { font-size: 8px; }
  .menu-toggle { order: 4; display: flex; width: 44px; height: 44px; border: 0; padding: 12px; background: transparent; flex-direction: column; justify-content: center; gap: 6px; cursor: pointer; }
  .menu-toggle span { height: 1.5px; width: 20px; background: var(--text); transition: transform .2s; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.75px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
  .site-nav { display: none; position: absolute; top: 76px; left: 0; right: 0; padding: 16px 20px 22px; z-index: 20; background: var(--bg); border-bottom: 1px solid var(--line); gap: 0; }
  .site-nav.is-open { display: flex; flex-direction: column; align-items: stretch; }
  .site-nav > a { padding: 15px 8px; }
  .site-nav .nav-contact { background: transparent; border-radius: 0; padding: 15px 8px; justify-content: space-between; }
  .hero { grid-template-columns: 1fr; min-height: auto; gap: 15px; padding-block: 54px 35px; }
  .company-label { font-size: 11px; margin-bottom: 20px; }
  h1 { font-size: clamp(30px, 8.2vw, 51px); line-height: 1.4; letter-spacing: -.05em; }
  html[lang="en"] h1 { font-size: clamp(26px, 7.3vw, 48px); line-height: 1.3; }
  .hero-description { margin-block: 19px 26px; font-size: 14px; }
  .button { min-height: 46px; }
  .hero-visual { width: 100%; margin: 0; }
  .hero-visual img { max-height: 330px; aspect-ratio: 1.4; }
  .section { padding-block: 54px; }
  h2 { font-size: 26px; }
  .section-heading { margin-bottom: 30px; }
  .section-heading > p { font-size: 13px; margin-top: 12px; }
  .service-row { grid-template-columns: 1fr; gap: 11px; padding-block: 25px; }
  .service-row > p { font-size: 13px; }
  .service-name h3, html[lang="en"] .service-name h3 { font-size: 19px; }
  .about-grid { grid-template-columns: 1fr; gap: 34px; }
  .about-visual { min-height: 260px; border-radius: 20px; }
  .about-visual img { width: 110px; height: 110px; }
  .about-visual > span { font-size: 30px; margin-top: 16px; }
  .about-copy h2 { font-size: 28px; }
  html[lang="en"] .about-copy h2 { font-size: 30px; }
  .about-copy > p:not(.eyebrow) { font-size: 13px; }
  .about-signature { margin-top: 24px; }
  .principle-grid { grid-template-columns: 1fr; gap: 28px; }
  .principle-grid p { max-width: none; font-size: 13px; margin-top: 10px; }
  .contact { padding-bottom: 44px; }
  .contact-panel { grid-template-columns: 1fr; padding: 32px 26px; gap: 36px; border-radius: 20px; }
  .contact-copy h2 { font-size: 30px; }
  .contact-copy > p:last-child { font-size: 13px; }
  .email-link { font-size: clamp(21px, 6.4vw, 28px); }
  .site-footer { align-items: flex-start; flex-direction: column; padding-block: 26px; gap: 20px; }
  .footer-links { gap: 26px; }
  .privacy-page { padding-block: 46px 60px; }
  .privacy-page h1 { font-size: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}
@media print {
  .site-header, .footer-links, .button, .hero-visual, .about-visual { display: none; }
  .container { width: 100%; }
  .hero, .about-grid, .contact-panel { display: block; min-height: auto; padding: 20px 0; }
  .section { padding-block: 20px; }
  .contact-panel { background: none; }
}